Special Sessions

Engineering structures are subjected to strength degradation processes. Under budget constraints, it is important to determine optimal maintenance actions schedules. Moreover, both aleatory and epistemic uncertainties make current Life Cycle Cost (LCC) models still improvable. Structural health monitoring (SHM) allows to keep strength degradation processes under control and should then be included in new life cycle cost models. The proposed session should discuss of LCC models using SHM and address the following issues : when and how long monitoring a structure ? which structures need monitoring in a transportation network ? how updating results when new monitoring results are provided ?

Long span bridges are always key connections on highways. It is important to maintain the performance of long span bridges by property maintenance work based on safety monitoring and on field test. All experiences and researches related to this topic are welcome to contribute in this session, especially the design and use of safety monitoring system for long span bridge, and maintenance strategy optimization based on monitoring data.

Bridge condition assessment is becoming one of the most important for evaluating bridge performance in not only bridge management system but also bridge health monitoring system. The major concerns in the Special Session will focus on how to assess the bridge conditions by using visual and monitoring data from various point of view.

The construction of high-speed railways comprises a set of demands, from design aspects to new types of equipment and construction solutions, involving the most recent and sophisticated technologies. Among the HSR network components, the design, operation and maintenance of Bridges involves very specific problems, where the structural elements are of great relevance. In this context, the main scope of this thematic session is to present advanced knowledge in several topics on this subject, considered most relevant to the design, operation and maintenance of this type of structures, and share the most innovative and interesting experiences on this field.

This special session targets industrial applications, test beds, and successful case studies for smart materials with the intent of bringing products, techniques, and services to market that make structural health monitoring, performance prediction, and life-cycle management feasible and cost effective. This special session is a dissemination and collaboration activity for the Manufacturing Technology Platform (MTP) Initiative Industrial Smart Material Applications: Manufacture, Build, Monitor, Assess, Predict, and Manage as part of the Intelligent Manufacturing Systems (IMS) Program. This initiative has assembled an international consortium of researchers and industrial partners to share and disseminate success, to identify technological barriers to be solved, and to open new market opportunities

Presenting Authors / Presentation Titles

The concept of structural robustness has gained during the last years the attention of researchers, professionals, managers and owners of infrastructures due to the potential losses, both direct and indirect ones, connected to a structural failure.
With the term structural robustness one denotes the capacity of the construction to be not susceptible of disproportionate damage after a negative trigger event: this generated situation can be due to an environmental source or can have an anthropic origin. In this case, design error and unintentional/intentional accidental situations can be considered.

This special session will focus on the more general framework recently proposed, based on dependability concept in order to consider not only the passive attitude of the constructions to reduce disproportionate unsuccessful outcomes, but also the active measures that can be established

It is well known the destructive action of the environment towards the bridge constructions, especially the water aggressiveness toward the construction materials.

There are also known the climate changes that generate uncommon phenomena (as for instance big temperature variations, tsunami, taiphuns, earthquakes, abundant rains and so on) that have a negative influence on all type of constructions, including on bridges.

The purpose of this special session is to share the experience and knowledge in order to control these phenomena and to protect the constructions against their destructive effects

The realization of high-cost and safety-critical infrastructures has pointed out the necessity of advanced approaches able to consider the intrinsic complexity of structures. The complexity can be related to the following aspects: a) nonlinear mechanical behavior; b) objective and cognitive uncertainties; c) strong interaction among components.

In this session, the complexity considered is connected with all the aspects of modern infrastructures: optimization process in the conceptual design phase, safety and performance evaluation in the assessment phase, identification, monitoring and control in the in-service phase.

To deal with this complexity, nondeterministic schemes of analysis and simulation are considered, with specific reference to soft-computing techniques and more generally speaking to probabilistic framed algorithms.

Title of papers to be presented in the session;

1. Network-Level Bridge Management System in Korea Considering LCC and Performance Degradation

Author : Jung-Sik Kong
Co-Authors : Yoon-Koog Hwang, Kyung-Hun Park, Kyung-Koo Kang, Heung-Min Park, Mi-Yeon Park

2. Practical Life-Cycle Approach for Bridge Management System in Korea

Author : Kyung-Hun Park
Co-Authors : Jong-Wan Sun, Sang-Yoon Lee, Yoon-Koog Hwang

3. LCC Effective Pracital Optimum Design of High-Speed Railway Steel Bridge with Two Main Girders Using
Robust Optimization

Author : Mi-Yeon Park
Co-Authors : Hyo-Nam Cho, Cheol-Jun Cha, Seung-Jae, Lee

4. Reliability-Based Optimum Design of High-Speed Railway Steel Bridge with Two Main Girders Considering
Structure-Track interaction and Heuristic Decision Method

Author : Jong-Soon Lee
Co-Authors : Hyo-Nam Cho, Hwan-Joong Joo, Sang-Yeoub Lee

5. A Study on Optimal Decision-Making Methodology for Bridge Asset Management

Author : Jong-Wan Sun
Co-Authors : Hyo-Nam Cho, Kyung-Hoon Park

6. Analytical and Experimental Studies for Developing Concrete Filled Tubular Arch Girder

Author : Sang-Yoon Lee
Co-Authors : Kyung-Hoon Park, Jung-Ho Kim, Goang-Seup Zi, Jung-Sik Kong

7. Consideration of Safety in the Revision of the Bridge Management System in Korea

Author : Heung-Min Park
Co-Authors : Kyung-Hoon Park, Jung-Sik kong

8. Life Cycle Cost Consideration for a New Bridge Management System in Korea

Author : Jong-Kwon Lim
Co-Authors : Heung-Min Park, Mi-Yeon Park, Kyung-Hoon Park

ARCHES is a Specific Targeted Research Project (STREP) funded by the 6 Framework Programme of the European Commission. The overall goal of the project is to develop ways to raise the standard of the highway structures of New Member States (NMS) and Central and Eastern European Countries (CEEC) to the level necessary for their full economic integration into the EU and for the future development of the Union. ARCHES focuses on structural assessment and monitoring, strategies to prevent deteriorationand optimum rehabilitation of highway structures by complementary techniques. The key problem is addressed by a combined approach:

• optimizing the use of existing infrastructure through better safety assessment and monitoring procedures which will avoid interventions, i.e., avoid unnecessarily replacing or rehabilitating structures that are in fact perfectly safe 
• monitor and prevent corrosion of existing reinforcement and develop innovative new reinforcement materials that are highly resistant to corrosion 
• strengthen the infrastructure of bridges by means of bonded reinforcements
• harden highway structures with Ultra High Performance Fibre Reinforced Concretes applied in severely exposed zones to dramatically increase their durability

Speakers:

Tomasz Wierzbicki (IBDIM, Poland):  ARCHES: a gaze on Central European highway structures

Joan R. Casas (UPC, Spain): Assessment and monitoring methods of existing bridges to avoid unnecessary strengthening or replacement

Aljosa Sajna (ZAG, Slovenia): New smart and cost efficient techniques for prevention and monitoring of corrosion in reinforced concrete structures.

Marek Lagoda (IBDIM; Poland): Guidelines for strengthening bridge elements with prestressed Fibre Reinforced Polymer (FRP)

Emmanuel Denarié (EPFL, Switzerland): Ultra High Performance Fibre Reinforced Concretes to locally harden bridge structures in zones of severe environmental and mechanical loading.

The current trend in the bridge technology is being very rapidly advancing with new high performance materials, innovative approaches and time saving cost effective methodologies. The proposed session will focus on such projects which have utilized these advancements successfully.

This special session will center on a presentation of the unique collaboration between academe, industry and infrastructure ownership.  Drexel University and Pennoni Associates have been working together with the Burlington County Bridge Commission on the preservation and rehabilitation of their signature long span bridges.  To date the Drexel/Pennoni team has implemented the use of Smart Technology such as strain gauges and vibration sensors on the Burlington-Bristol Bridge.  The session will focus on the cost savings that were effectuated and how the decision process was enhanced by using the available data from this technology.  We will also discuss Smart Technology that has been installed as part of new construction.  We will then finish the presentation with a discussion of how this technology can be rolled together in the form of a decision making tool utilizing Asset Management Protocols.

Speakers:

The session will include representatives from the owner, Drexel University, and Pennoni Associates.  These people will be determined, but we anticipate the representative from the Commission to discuss the good and the bad of this technology from a political perspective.  Drexel students and professors will discuss the results of the analyses that were performed on a particular floor beam connection, as well as the results of their continuing vibration analysis.  Representatives from Pennoni, who serve as the Program Manager and Engineer of Record for the Commission will discuss uses of Smart Technology in the performance of their tasks and assisting them in preserving these signature structures.  Finally, representatives from the owner will discuss how the implementation of an Asset Management program that utilizes Smart Technology is essential in the day to day maintenance activities and inspection by the Commission employees.  The anticipated speakers are as follows:

Mr. John Comegno, Chairman, Burlington County Bridge Commission
Mr. Philip Adams, Director of Maintenance, Burlington County Bridge Commission
Mr. David Lowdermilk, Vice President, Pennoni Associates
Dr. Frank Moon, Drexel University-IIS
Mr. Nathan Dubbs, Research Engineer, Drexel University-IIS
Mr. Lawrence Egan, Chief Engineer, Burlington County Bridge Commission

Bridges are specific structures requiring specific seismic performance-based assessment and design procedures, which can not be simple extension of those, being developed for buildings. Although bridges seem to be relatively simple structures, their behavior during strong earthquakes could be very complicated involving highly nonlinear response of individual structural components and complex interaction between these components. An overview of the new models, methodologies and computer tools, verified by large scale experiments, will be presented during the session. More complex inelastic response history modeling as well as simplified (push-over based) inelastic procedures and their limitations will be discussed.

Speakers:

Dr. Donatello Cardone
University of Basilicata, Department of Structures, Geotechnics and Applied Geology,
C. da Macchia Romana, 85100 Potenza, Italy
donatello.crd@libero.it

Prof. Arya Ebrahimpour
Idaho State University, Dept. of Civil and Environmental Engineering
Pocatello, ID83209, USA
ebraarya@isu.edu

Assoc. Prof. Tatjana Isakovic
University of Ljubljana, Faculty of Civil Engineering
Jamova 2, SI-1000 Ljubljana, Slovenia
tisak@ikpir.fgg.uni-lj.si

Prof. Camillo Nuti
Universita degli Studi Roma Tre, Dipartimento di Strutture
Via C. Segre 4-6, 00146 Roma, Italy
c.nuti@uniroma3.it

Assist. Prof. Jamie Ellen Padgett
Rice University, Dept. of Civil & Environmental Engineering
6100 Main St., MS-318
Houston, TX 77005, USA
jamie.padgett@rice.edu

Prof. Jose' Restrepo
Univ. of California San Diego
9500 Gilman Dr., San Diego, CA92093-0085, USA
jrestrepo@soe.ucsd.edu

Assoc. Prof. Pedro F. Silva
The George Washington University, Dept. of Civ. and Env. Eng.
Phillips Hall, Room 642, Academic Center
801 22nd Street, NW, Washington, DC 20052
silvap@gwu.edu

 

Problems that are faced by bridge engineers such as the increase traffic loads, substantial economic growth, decaying condition of many bridges, and environmental impacts imparts large demands on bridge structures. In addition, minimizing impacts to traffic and upgrading the existing bridges to meet the current standards are some of the issues associated with the rehabilitation or replacement design of existing bridges. In the last few years, the bridge engineering industry has made significant advances covering a wide range of issues. These include bridge design, new materials, rehabilitation of existing structures, building new bridges with unique features, and innovative construction techniques.

This special session will focus primarily on the following topics:

1. Recent constructed bridge structures with unique features
2. Challenges with the design of bridge structures
3. Challenges with rehabilitation of bridge structures
4. Challenges in the construction of bridges
5. Innovative bridge construction techniques

 

In designing bridge structures, the system performance must be considered as time-dependent due to the unavoidable source of environmental and mechanical damage. Therefore, a consistent design approach should comply with the desired performance not only at the initial stage when the system is supposed to be in the intact state, but also during its expected life-cycle. This can be achieved by taking into account the effects induced by unavoidable sources of damage and by eventual maintenance interventions under uncertainty. In recent years a considerable amount of research work has been done and relevant advances have been accomplished in the fields of modeling, analysis, design, maintenance and rehabilitation of deteriorating structures. Nowadays these developments are perceived to be at the heart of bridge engineering, which is currently undergoing a transition towards a life-cycle oriented design philosophy. This Special Session is aimed to present recent advances in the field of life-cycle design of structural systems with emphasis on bridges.

 

There are numerous multi-scale monitoring techniques that range from micro-scale to macro-scale such as Electronic Speckle Pattern Interferometry (ESPI), Digital Image Correlation (DIC), and Laser Doppler Velocity Meter (LDVM). These newly developed optical monitoring techniques have tremendous features in high accuracy, contactless, full-field and high resolution in their monitoring capability. This session’s scope is ranging from technological barriers to possibilities of creating new business in monitoring structural deformation, strain, stress and structural dynamic properties by utilizing innovative optical monitoring techniques to provide appropriate structural information for bridge maintenance and safety.

 

For bridge owners and bridge administrators, the preservation of their bridges is becoming more and more important issues than building new bridges at the present time. For the management of bridge stocks, they are urged to seek the budget and implement preventive maintenance. Most of them are eager to establish the bridge management system for the optimum planning for the preventive bridge maintenance through simple yet rigorous inspections, efficient data acquisition, and precise diagnosis of future state and practical execution of effective countermeasure under consideration of priority rule taking into even the historic and civic importance. This session is proposed to introduce key Japanese bridge owners to show their practical implementation of bridge management.

Asset Management of Bridge Structures in Osaka Prefectural Government

H. Ito, A. Kitayama
Department of Urban and Public Works, Osaka Prefectural Goverment, Osaka, Japan
(Ito) ItoHi@mbox.pref.osaka.lg.jp
(Kitayama) KitayamaAk@mbox.pref.osaka.lg.jp

H. Furuta*
Kansai University, Takatsuki, Japan
furuta@res.kutc.kansai-u.ac.jp

Study for Bridge Renewal and Repair by Osaka Municipal Government

E. Watanabe*
Kyoto University, Kyoto, Japan
watanabe@rpi,or,jp (Corresponding Author)

H. Furuta
Kansai University, Takatsuki, Japan
furuta@res.kutc.kansai-u.ac.jp

T. Yokota3 Y. Komatsu3and S. Nagahashi3
Public Works Bureau, Osaka Municipal Government, Osaka, Japan
(Yokoka) te-yokota@city.osaka.lg.jp
(Komatsu) ya-komatsu@city.osaka.lg.jp
(Nagahashi) s-nagahashi@city.osaka.lg.jp

Preventive Maintenance and Technical Development on Long-Span Bridges

M. Okuda, I. Yamada, Y. Hasegawa
Honshu-Shikoku Bridge Expressway Company Limited, Kobe, Japan
ikuo-yamada@jb-honshi.co.jp

Risk Evaluation and Financial analysis for Road Maintenance on Urban Expressway Based on H-BMS

Y. Sakai
1Maintenance and Transport Department , Hanshin Expressway Company Limited, 4-1-3 Kyutaro-machi,Chuo-ku,Osaka 541-0056, Japan
yasuhito-sakai@hanshin-exp.co.jp

T. Arakawa
2Planning Department, Hanshin Expressway Management Technology Center, Toa Bldg. 4-5-7, Minami-honmachi, Chuo-ku, Osaka 541-0054, Japan
arakawa@tech-center.or.jp

H.Furuta
Kansai University, Osaka 569-1095, Japan
furuta@res.kutc.kansai-u.ac.jp

K.Kobayashi
Kyoto University, Kyoto, Japan
kkoba@psa.mbox.media.kyoto-u.ac.jp

Risk Based Inspection Strategy Considering Structural Redundancy of Long Span Bridges

N.Mashima, H.Kobayashi
Hanshin Expressway Company limited, Osaka, Japan
(Mashima) nobuhiro-mashima@hanshin-exp.co.jp
(Kobayashi) hiroshi-kobayashi@hanshin-exp.co.jp

H.Kanaji, H.Oishi
Hanshin Expressway Management Technology Center, Osaka, Japan
(Kanaji) kanaji@tech-center.or.jp
(Oishi) oishi@tech-center.or.jp

K.Kaito
Osaka University, Osaka, Japan
kaito@ga.eng.osaka-u.ac.jp

Evaluation of Maintenance Cost Estimation and Feedback to the BMS

H. Kawaragi
Road Management Division, Aomori Prefectural Government, Japan
hidetaka_kawaragi@pref.aomori.lg.jp

M. Kaneuji
Civil Engineering Management Division, Kajima Corporation, Tokyo, Japan
mackaneuji@kajima.com

E. Watanabe
Kyoto University & Chairperson, Regional Planning Institute of Osaka, Osaka, Japan

Approach to Bridge Management using BMS in West NEXCO

Takayuki MATSUI ,Yoshinori WADA ,Shuhei SAKAI
Nippon Expressway Research Institute Co., Tokyo, Japan
t.matsui.ab@ri-nexco.co.jp
y.wada.ab@ri-nexco.co.jp
s.sakai.ac@ri-nexco.co.jp

Toshinori YASUZATO
West Nippon Expressway Company Limited, Osaka, Japan
t.yasuzato.aa@w-nexco.co.jp

 

 

Designs of bridges to protect against wind, scour, earthquake, fatigue and other natural and environmental loadings have evolved over time. This design evolution has come about directly as a result of these specific events taking place and affecting serviceability and safety of the structure. Before the events of 9/11 designing for security was not a consideration, especially in the US. However since then a level of effort has been put forth to understand the behavior of bridges under explosive loadings and to develop mitigation measures. In pursuing this agenda to understand bridge behavior and develop mitigation measures many challenges have surfaced. The current direction of research has been to understand component behavior, develop mitigation measures and provide general design guidelines. This session would highlight some of the effort that has been underway and discuss the challenges that lay ahead.

1. Recognizing & Reducing Vulnerabilities of Transportation Infrastructure
   Sheila Rimal Duwadi, P.E.
   Federal Highway Administration
   Turner Fairbank Highway Research Center
   6300 Georgetown Pike
   McLean, VA 22101
   (202) 493-3106
   sheila.duwadi@dot.gov
   
   
2. Mitigation of Terrorist Threats to Structural Components
   James Ray (Corresponding), Vincent Chiarito, Bob Walker, Jared Minor
   US Army Engineer Research and Development Center
   ATTN: CEERD-GS-S (James Ray)
   3909 Halls Ferry Road
   Vicksburg, MS 39180-6199
   Phone: 601-634-3839
   Email: james.c.ray@erdc.usace.army.mil
   
   
3. A DHS Perspective of Materials and Methods of Bridge Security
   Thomas G. Coleman, Manager (Corresponding)
   Infrastructure Protection Branch
   Transportation Security Lab, TSL-100
   Atlantic City International Airport, NJ, 08405, Thomas.coleman2@dhs.gov
   609-813-2715
   
   Dr. John Fortune, Program Manager
   Infrastructure and Geophysical Division
   Science and Technology Directorate
   Department of Homeland Security
   Washington, DC
   (202)254-6622
   John.fortune@dhs.gov
   
   
4. Raising the Bar on Design - Probability of Failure vs Consequences of Failure
   Sena Kumarasena, Ph.D, PE
   HNTB, NY, NY
   Preferred Mailing Address: 30, Yarmouth road, Wellesley, MA 02481
   tkumarasen@hntb.com
   

With strong infrastructural development in Hong Kong over the past two decades, the Hong Kong Government has installed long-term structural health monitoring systems (SHMS) in all long-span cable-supported bridges in Hong Kong to monitor their loading conditions, to assess their performance, to detect their damages, and to guide the maintenance with utmost goals of ensuring the functionality, safety and economical efficiency of bridges during their long service lives. Valuable experiences have been leaned on how to design and make good use of long-term SHMS. This special session will highlight, from the perspectives of both academic research and practical application, the recent significant progress of long-term SHMS for bridges in Hong Kong.

Structural Health Monitoring and Safety Evaluation of Stonecutters Bridge under the In-Service Condition

*WONG, K. Y.
Bridges & Structures Division, Highways Department,
The Government of Hong Kong Special Administrative Region

Structural Health Monitoring of Stonecutters Bridge under the Construction Stage

WONG, K. Y.
Bridges & Structures Division and 2Major Work Project Management Office

*YAU, M. S. Doris HUI, C. H. Michael
Highways Department, The Government of Hong Kong Special Administrative Region

Structural Health Monitoring System-Based Bridge Rating Method for Long Span Cable-Supported Bridges

Xu, Y. L. / Zheng, Y. / Chen, Z.W. Xia, Y.
Department of Civil and Structural Engineering, The Hong Kong Polytechnic
University, Hong Kong

Li, Q. Department of Bridge Engineering, Tongji University, Shanghai, China

Guo, A.X. School of Civil Engineering, Harbin Institute of Technology, Harbin, China

Wong, Y.L. Bridges & Structures Division, Highways Department, Hong Kong

A method for stress concentration factor determination of welded steel bridge T-joints under moving load

X.W. Ye / Y.Q. Ni / J.M. Ko
Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
TUxw.ye@polyu.edu.hkUT, TUceyqni@polyu.edu.hkUT, TUcejmko@polyu.edu.hkUT

Thermal Behaviors of Tsing Ma Suspension Bridge

Yong Xia, Bo Chen, You-Lin Xu
Department of Civil and Structural Engineering, The Hong Kong Polytechnic
University, Hong Kong

Long-term Performance of Structural Health Monitoring System for Bridges

Zhu, S. , Xu, Y. L.
Department of Civil and Structural Engineering, The Hong Kong Polytechnic
University, Hong Kong

Nowadays, global design paradigm is steady increasing toward the performance-based design (PBD) in civil structures. The performance-based design is based on the theory that designers can use any kinds of materials, analysis method, construction method, and structural features if the required performance is satisfied via the specified performance assessment procedure. This special session has been organized to bring and share the knowledge on the performance-based design for steel structures. Any kinds of researches regarding structural performance are all welcomed. Especially, efforts and contributions on developing design guidelines and specifications for performance-based design are cordially welcomed.

	Author(s)	Title
1	Eiki Yamaguchi	Performance-based maintenance of weathering steel bridges
2	Hitoshi Furuta, Naotsugu Sato, Mitsuo Kawatani	Load Actions for Performance-Based Design
3	Mitsuo Kawatani, Naotsugu Sato, Munehisa Fujita	Specifications of Loads for Performance-Based Design
4	Ho-Sung Na, Ji-Yop Yi, Hoon Yoo, Dong-Ho Choi	Iterative Inelastic Buckling Analysis for Steel Frames
5	Jung-Sik Kong	Reliability-based design of PC box girder bridge under pitting corrosion
6	Sang-Hyo Kim, Kwang-Il Cho, Moon-Seock Choi	A study on vibration performance estimation of footbridges using human body model

 

 

In this special session, five papers on evaluation, assessment, repair and retrofit of fatigue damage in steel highway and railway bridges are presented and discussed. We have a number of steel highway and railway bridge structures especially in urban area in Japan. Some of those structures suffer various types of fatigue damage, but replace of them should be too expensive, and restriction or close of the traffic could be hardly allowed. So, rehabilitation of those structures becomes of great importance.
Speakers are professors and experts on steel bridge structures who are working in universities, expressway companies and railway company in Japan and Korea.

Speakers: 5 speakers as follows;

Evaluation of fatigue damage degree for strategic repair priority of orthotropic steel bridge decks
Ms. Akiko TABATA
Hanshin Expressway Company Limited
Osaka, Japan
Email address: akiko-tabata@hanshin-exp.co.jp

Fatigue Evaluation and Retrofit of Orthotropic Steel Deck Bridge
Prof. Kyung, Kab Soo
Korean Maritime University
Busan, Korea
Email address : kyungks@hhu.ac.kr

Fatigue failure assessment of actual-working load and run location on orthotropic steel decks
Dr. Yoshihiko TAKADA
Hanshin Expressway Management Technology Center
Osaka, Japan
Email address: takada@tech-center.or.jp

Out-of-plane bending behavior of the top flange under sleepers in steel railway through truss stringers
Dr. Kentaro MATSUMOTO
Railtec Co.
Osaka, Japan
Email address: matsumoto_kentarou@railtec.jp

EXPERIMENTAL STUDY ON REPAIR OF CRACKED STEEL MEMBERS USING GFRP AND STOP HOLES
Prof. Hiroyuki SUZUKI
Meisei University
Tokyo, Japan
Email address: suzukihi@ar.meisei-u.ac.jp

 

 

The objective of this session is to present new developments in the bridge design codes. There is a considerable interest in implementation of the limit state design in the United States, Canada, Europe, Japan and Korea. Papers will address new developments and IABMAS will provide a forum for discussion and exchange of ideas. The tipcs to be considered include design code provisions, design loads and their combinations, for highway and railway bridges, and geotechnical design.

 

Live load is very important in bridge design. There are considerable site-specific differences. In recent years, a substantial volume of weigh-in-motion data has been collected all over the world. There is a need to process this data, present it, and compare, with the objective to formulate a rational design live load. Therefore, the session will serve as a forum for showing the IABMAS audience the actual load, including gross vehicle wieght, axle loads, multiple presence and other parameters for various locations in the US and other countries.

 

Summary:

High-performance concrete (HPC) for bridges began in 1987 with the first Strategic Highway Research Program. As a result, the American Association of State Highway and Transportation Officials (AASHTO), in cooperation with the Federal Highway Administration (FHWA), created the AASHTO Lead States Team for HPC Implementation. The team first met in 1996 with members representing industry, DOTs, and FHWA. In 1997, the FHWA added its own HPC Technology Delivery Team, to work with the AASHTO Team and concrete industry to implement HPC bridges. During ensuing years much has been learned about HPC. This session discusses lessons learned in several pioneering states.

Moving Forward with HPC in New Hampshire
David L. Scott, P.E., In-house Design Chief, Bureau of Bridge Design
New Hampshire Department of Transportation
P.O. Box 482
Concord, NH 03302-0482
E-mail: DScott@dot.state.nh.us

Status of Texas DOT HPC Implementation
Kevin R. Pruski, P.E., Bridge Field Engineer, Bridge Division
Texas Department of Transportation
125 East 11th Street
Austin, TX 78701-2483
E-mail: KPruski@dot.state.tx.us

HPC Implementation in Virginia
H. Celik Ozyildirim, Ph.D., P.E., Principal Research Scientist
Virginia Transportation Research Council
530 Edgemont Road
Charlottesville, VA 22903
E-mail: Celik@VDOT.Virginia.gov

High Performance Concrete in Washington State
Jugesh Kapur, P.E., State Bridge & Structures Engineer
Washington State Department of Transportation
P.O. Box 47340
Olympia, WA 98504-7300
E-mail: KapurJu@wsdot.wa.gov

HPC Lessons Learned and Future Directions
Susan N. Lane, P.E., Manager, Transportation Structures
Portland Cement Association
500 New Jersey Avenue, NW, 7th Floor
Washington, DC 20001-2005
E-mail: SLane@cement.org

 

Upgrading of engineering structures by means of corrugated-plate structures has been known and quite commonly employed on almost all continents (mainly in Canada and the USA and in the Scandinavian countries) for many years. The shell structures made from corrugated steel plates were first used in the USA at the beginning of the 20th Century.

The specific nature of soil-steel bridges depends thereon that they are consisting of two entirely different material media (soil and steel), therefore the whole load-capacity system becomes flexible.
The actual design methods of such flexible structures are too simplified because the rational calculation methods are complicated and the advanced numerical model should be applied.

Architectonically the corrugated plate bridge structures are not less attractive than the traditional prefabricated concrete, steel plate girder or composite (steel + concrete) structures. In addition, they lend themselves to different finishing treatments as a result of which their aesthetics can be greatly enhanced so that the structures will perfectly blend with their surroundings.

The presentations include selected problems of design, static and dynamic tests, long-term monitoring of soil-steel bridge as well as the manner of modernization using corrugated steel plates.

 

In recent years, numerous bridges worldwide have been instrumented with sensors for temporary or permanent monitoring for different purposes. However, how to make use of the monitoring results for decision making in bridge maintenance and management remains a challenge. This session address this important question through presentations in a wide range of topics including monitoring of corrosion, scouring, dynamic characteristics, and damage detection. A focus of the discussion will be on the lessons learnt from the bridge monitoring and more importantly the integration of the monitoring results into bridge maintenance and management practice.

 

China has built many major bridges in the last 20 years. Currently, the world’s longest span of girder bridges, cable-stayed bridges and arch bridges are all in China. This session will offer an overall picture of the Chinese bridge construction.