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SHM-based F-AHP bridge rating system with application to Tsing Ma Bridge

Qi LI, You-lin XU, Yue ZHENG, An-xin GUO, Kai-yuen WONG, Yong XIA

《结构与土木工程前沿（英文）》 2011年第5卷第4期页码 465-478 doi: 10.1007/s11709-011-0135-5

摘要： This paper aims at developing a structural health monitoring (SHM)-based bridge rating method for bridge inspection of long-span cable-supported bridges. The fuzzy based analytic hierarchy approach is employed, and the hierarchical structure for synthetic rating of each structural component of the bridge is proposed. The criticality and vulnerability analyses are performed largely based on the field measurement data from the SHM system installed in the bridge to offer relatively accurate condition evaluation of the bridge and to reduce uncertainties involved in the existing rating method. The procedures for determining relative weighs and fuzzy synthetic ratings for both criticality and vulnerability are then suggested. The fuzzy synthetic decisions for inspection are made in consideration of the synthetic ratings of all structural components. The SHM-based bridge rating method is finally applied to the Tsing Ma suspension bridge in Hong Kong as a case study. The results show that the proposed method is feasible and it can be used in practice for long-span cable-supported bridges with SHM system.

关键词： structural health monitoring (SHM) bridge rating method fuzzy based analytic hierarchy approach criticality and vulnerability rating Tsing Ma Bridge

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Major bridge development in Hong Kong, China—past, present and future

Michael CH HUI, Doris YAU

《结构与土木工程前沿（英文）》 2011年第5卷第4期页码 405-414 doi: 10.1007/s11709-011-0136-4

摘要： The first “modern” type of vehicular bridge was built in Hong Kong China in the 1920s. The need for an efficient transportation system to cope with population growth and enable economic development has demanded the construction of more and more bridges since the middle of the 20th century. By 2007, Hong Kong had a total of about 1300 vehicular bridges. Four of these bridges, including the Tsing Ma Bridge, Kap Shui Mun Bridge, Ting Kau Bridge, and the cable-stayed bridge on the Hong Kong- Shenzhen Western Corridor, are considered to be major bridges supported by cables. Currently, the Stonecutters Bridge on Route No. 8 is under construction and is expected to be completed in late 2009. At the same time, the Hong Kong-Zhuhai-Macao Bridge will be in its detailed design stage soon. While efforts have been made by bridge builders to construct these giant structures, the upkeeping of these valuable assets at a high standard and ensuring their continuous functioning and performance during their intended lifespans will be another important task for bridge engineers. Wind and structural health monitoring system (WASHMS) will play a key role in this respect.

关键词： Tsing Ma Bridge Kap Shui Mun Bridge Ting Kau Bridge Stonecutters Bridge Hong Kong-Zhuhai-Macao Bridge wind and structural health monitoring system (WASHMS)

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General framework for bridge life cycle design

Junhai MA, Airong CHEN, Jun HE

《结构与土木工程前沿（英文）》 2009年第3卷第1期页码 50-56 doi: 10.1007/s11709-009-0004-7

摘要： Based on a detailed illustration for bridge life cycle design which comprises the processes of service life design, aesthetics design, performance design, environmental and ecological design, inspection, maintenance and repair design as well as cost analysis, this paper presented a general framework for bridge life cycle design comprising three design phases and six design processes.

关键词： bridge whole life design design phase design process general framework

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Vehicle-bridge coupled vibrations in different types of cable stayed bridges

Lingbo WANG,Peiwen JIANG,Zhentao HUI,Yinping MA,Kai LIU,Xin KANG

《结构与土木工程前沿（英文）》 2016年第10卷第1期页码 81-92 doi: 10.1007/s11709-015-0306-x

摘要： Numerical analyses of the coupled vibrations of vehicle-bridge system and the effects of different types of cable stayed bridges on the coupled vibration responses have been presented in this paper using ANSYS. The bridge model and vehicle model were independently built which have no internal relationship in the ANSYS. The vehicle-bridge coupled vibration relationship was obtained by using the APDL program which subsequently imposed on the vehicle and bridge models during the numerical analysis. The proposed model was validated through a field measurements and literature data. The judging method, possibility, and criterion of the vehicle-bridge resonance (coupled vibrations) of cable stayed bridges (both the floating system and half floating system) under traffic flows were presented. The results indicated that the interval time between vehicles is the main influence factor on the resonance excitation frequency under the condition of equally spaced traffic flows. Compared to other types of cable stayed bridges, the floating bridge system has relatively high possibility to cause vehicle-bridge resonance.

关键词： vehicle-bridge coupled vibration cable stayed bridge resonances of vehicle-bridge system

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基于风险管理的跨海悬索桥养护管理

郭健,张强,马敬海

《中国工程科学》 2010年第12卷第7期页码 64-67

摘要：

基于结构危险性分析方法论和管理科学的量化管理，将悬索桥风险管理细化为单元层次上的标准化巡检养护管理子过程，通过定义该单元巡检养护的全部内容以及特殊事件和特殊维修的管理策略，实现了基于风险管理的跨海悬索桥养护管理，同时还介绍了基于风险管理的养护管理系统的组成。

关键词：悬索桥巡检养护桥梁管理系统风险管理

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跨海悬索桥结构危险性分析

张强,马敬海

《中国工程科学》 2010年第12卷第7期页码 61-63

摘要：

阐述了桥梁结构危险性分析的方法论，根据危险性分析服务对象和目的，确定了跨海悬索桥结构危险性分析的内容和方法。在总体危险性分析层面确定需要控制的桥梁结构风险，在单元危险性分析层面确定如何对这些风险的控制，同时将特殊事件和维修等因素也纳入危险性分析，保证了桥梁生命周期内所有风险的无遗漏分析和控制。

关键词：悬索桥结构危险性分析桥梁管理

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三塔双跨悬索桥动力特性分析

阮静,马如进

《中国工程科学》 2010年第12卷第8期页码 83-87

摘要：

桥梁结构的动力特性对进行桥梁的动力性能设计、健康检测和维护具有十分重要的意义，而三塔双跨悬索桥具有和传统的大跨径悬桥不完全相同的静、动力性能。针对泰州大桥工程实例，通过ANSYS有限元分析软件研究了三塔双跨悬索桥在成桥阶段和施工阶段的动力特性，并与传统的悬索桥作比较，得出了一些有意义的结论，供工程设计人员参考。

关键词：三塔双跨悬索桥动力特性自振频率振型

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泰州大桥主梁施工阶段的颤振稳定性及管理对策

李承宬,陈艾荣,马如进

《中国工程科学》 2012年第14卷第5期页码 46-50

摘要：

以三塔两跨的泰州大桥为研究对象，根据有限元分析及全桥气弹模型风洞试验的结果，对主梁对称架设施工阶段的动力特性及颤振稳定性进行了研究。结合桥位地区30年的月极大风速分析，对主梁架设阶段的颤振稳定性进行了评价。最后提出了一套针对悬索桥施工阶段颤振稳定性评价及策略确定的流程，可供其他桥梁参考。

关键词：多塔悬索桥施工阶段颤振稳定性管理对策

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我国海洋桥梁工程技术发展现状、挑战及对策研究

高宗余,阮怀圣,秦顺全,马润平,梅大鹏

《中国工程科学》 2019年第21卷第3期页码 1-4 doi: 10.15302/J-SSCAE-2019.03.016

摘要：

针对未来深水海洋桥梁工程建设需求，分析了中国海洋桥梁工程技术取得的成就及存在的不足，提出海洋桥梁工程面临的技术挑战主要为“强风浪、强腐蚀、超水深、超大跨”等四个方面，应高度重视环境作用及其组合、结构耐久性、抗疲劳和全寿命设计等理论研究，重点突破超大跨度桥式方案、超深水基础结构形式和快速施工新型结构形式等结构关键技术瓶颈。建议成立国家级海洋桥梁工程技术研究中心，加强科技硬件力量投入及创新人才培养，完善科技奖励机制。

关键词：海洋桥梁工程设计理论结构形式重难点问题技术发展方向

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Precast steel–UHPC lightweight composite bridge for accelerated bridge construction

Shuwen DENG, Xudong SHAO, Xudong ZHAO, Yang WANG, Yan WANG

《结构与土木工程前沿（英文）》 2021年第15卷第2期页码 364-377 doi: 10.1007/s11709-021-0702-3

摘要： In this study, a fully precast steel–ultrahigh performance concrete (UHPC) lightweight composite bridge (LWCB) was proposed based on Mapu Bridge, aiming at accelerating construction in bridge engineering. Cast-in-place joints are generally the controlling factor of segmental structures. Therefore, an innovative girder-to-girder joint that is suitable for LWCB was developed. A specimen consisting of two prefabricated steel–UHPC composite girder parts and one post-cast joint part was fabricated to determine if the joint can effectively transfer load between girders. The flexural behavior of the specimen under a negative bending moment was explored. Finite element analyses of Mapu Bridge showed that the nominal stress of critical sections could meet the required stress, indicating that the design is reasonable. The fatigue performance of the UHPC deck was assessed based on past research, and results revealed that the fatigue performance could meet the design requirements. Based on the test results, a crack width prediction method for the joint interface, a simplified calculation method for the design moment, and a deflection calculation method for the steel–UHPC composite girder in consideration of the UHPC tensile stiffness effect were presented. Good agreements were achieved between the predicted values and test results.

关键词： accelerated bridge construction ultrahigh-performance concrete steel–UHPC composite bridge UHPC girder-to-girder joint

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Probabilistic seismic response and uncertainty analysis of continuous bridges under near-fault ground motions

Hai-Bin MA, Wei-Dong ZHUO, Davide LAVORATO, Camillo NUTI, Gabriele FIORENTINO, Giuseppe Carlo MARANO,

《结构与土木工程前沿（英文）》 2019年第13卷第6期页码 1510-1519 doi: 10.1007/s11709-019-0577-8

摘要： Performance-based seismic design can generate predictable structure damage result with given seismic hazard. However, there are multiple sources of uncertainties in the seismic design process that can affect desired performance predictability. This paper mainly focuses on the effects of near-fault pulse-like ground motions and the uncertainties in bridge modeling on the seismic demands of regular continuous highway bridges. By modeling a regular continuous bridge with OpenSees software, a series of nonlinear dynamic time-history analysis of the bridge at three different site conditions under near-fault pulse-like ground motions are carried out. The relationships between different Intensity Measure (IM) parameters and the Engineering Demand Parameter (EDP) are discussed. After selecting the peak ground acceleration as the most correlated IM parameter and the drift ratio of the bridge column as the EDP parameter, a probabilistic seismic demand model is developed for near-fault earthquake ground motions for 3 different site conditions. On this basis, the uncertainty analysis is conducted with the key sources of uncertainty during the finite element modeling. All the results are quantified by the “swing” base on the specific distribution range of each uncertainty parameter both in near-fault and far-fault cases. All the ground motions are selected from PEER database, while the bridge case study is a typical regular highway bridge designed in accordance with the Chinese Guidelines for Seismic Design of Highway Bridges. The results show that PGA is a proper IM parameter for setting up a linear probabilistic seismic demand model; damping ratio, pier diameter and concrete strength are the main uncertainty parameters during bridge modeling, which should be considered both in near-fault and far-fault ground motion cases.

关键词： continuous bridge probabilistic seismic demand model Intensity Measure near-fault uncertainty

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Pretest analysis of shake table response of a two-span steel girder bridge incorporating acceleratedbridge construction connections

Elmira SHOUSHTARI, M. Saiid SAIIDI, Ahmad ITANI, Mohamed A. MOUSTAFA

《结构与土木工程前沿（英文）》 2020年第14卷第1期页码 169-184 doi: 10.1007/s11709-019-0590-y

摘要： This paper presents pretest analysis of a shake table test model of a 0.35-scale, two-span, steel plate girder bridge. The objective of pretest analysis was to obtain an insight on the seismic response of the bridge model during the shake table tests. The bridge included seat type abutments, full-depth precast deck panels, and a two-column bent in which columns were pinned to the footing and integral with superstructure. Six accelerated bridge construction connections were incorporated in the bridge model. An analytical model was developed in OpenSees and was subjected to ten input bi-directional earthquake motions including near-fault and far-field records. The overall seismic response of the bridge was satisfactory for all the earthquake records at 100%, 150%, and 200% design level. All connections and capacity-protected components remained elastic, and the average ductility capacity surpassed the ductility demand even at 200% design level. Using experimental fragility curves developed for RC bridge columns, it was predicted that there was a probability of 45% that columns would undergo the imminent failure in the last run and a probability of 30% for their failure.

关键词： shake table test accelerated bridge construction steel girder bridge OpenSEES UHPC simple for dead continuous for live

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State-of-the-art of long-span bridge engineering in China

XIANG Haifan, GE Yaojun

《结构与土木工程前沿（英文）》 2007年第1卷第4期页码 379-388 doi: 10.1007/s11709-007-0051-x

摘要： This paper introduces the state-of-the-art of longspan bridge engineering in China with emphases on recent long-span bridge projects, bridge deck configuration and material, design codes of long-span bridges and improvement of aero

关键词： bridge engineering state-of-the-art long-span bridge configuration improvement

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Particle swarm optimization model to predict scour depth around a bridge pier

Shahaboddin SHAMSHIRBAND, Amir MOSAVI, Timon RABCZUK

《结构与土木工程前沿（英文）》 2020年第14卷第4期页码 855-866 doi: 10.1007/s11709-020-0619-2

摘要： Scour depth around bridge piers plays a vital role in the safety and stability of the bridges. The former approaches used in the prediction of scour depth are based on regression models or black box models in which the first one lacks enough accuracy while the later one does not provide a clear mathematical expression to easily employ it for other situations or cases. Therefore, this paper aims to develop new equations using particle swarm optimization as a metaheuristic approach to predict scour depth around bridge piers. To improve the efficiency of the proposed model, individual equations are derived for laboratory and field data. Moreover, sensitivity analysis is conducted to achieve the most effective parameters in the estimation of scour depth for both experimental and filed data sets. Comparing the results of the proposed model with those of existing regression-based equations reveal the superiority of the proposed method in terms of accuracy and uncertainty. Moreover, the ratio of pier width to flow depth and ratio of 50 (mean particle diameter) to flow depth for the laboratory and field data were recognized as the most effective parameters, respectively. The derived equations can be used as a suitable proxy to estimate scour depth in both experimental and prototype scales.

关键词： scour depth bridge design and construction particle swarm optimization computational mechanics artificial intelligence bridge pier

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A filtering-based bridge weigh-in-motion system on a continuous multi-girder bridge considering the influence

Hanli WU, Hua ZHAO, Jenny LIU, Zhentao HU

《结构与土木工程前沿（英文）》 2020年第14卷第5期页码 1232-1246 doi: 10.1007/s11709-020-0653-0

摘要： A real-time vehicle monitoring is crucial for effective bridge maintenance and traffic management because overloaded vehicles can cause damage to bridges, and in some extreme cases, it will directly lead to a bridge failure. Bridge weigh-in-motion (BWIM) system as a high performance and cost-effective technology has been extensively used to monitor vehicle speed and weight on highways. However, the dynamic effect and data noise may have an adverse impact on the bridge responses during and immediately following the vehicles pass the bridge. The fast Fourier transform (FFT) method, which can significantly purify the collected structural responses (dynamic strains) received from sensors or transducers, was used in axle counting, detection, and axle weighing technology in this study. To further improve the accuracy of the BWIM system, the field-calibrated influence lines (ILs) of a continuous multi-girder bridge were regarded as a reference to identify the vehicle weight based on the modified Moses algorithm and the least squares method. experimental results indicated that the signals treated with FFT filter were far better than the original ones, the efficiency and the accuracy of axle detection were significantly improved by introducing the FFT method to the BWIM system. Moreover, the lateral load distribution effect on bridges should be considered by using the calculated average ILs of the specific lane individually for vehicle weight calculation of this lane.

关键词： bridge weigh-in-motion continuous bridge fast Fourier transform influence line axle weight calculation