检索结果-南通市图书馆

Earthquake Engineering and Engineering Vibration 2012年第2期11卷 195-204页

作者： Guo, Anxin Zhao, Qingjie Li, Hui School of Civil Engineering Harbin Institute of Technology Harbin 150090 China School of Civil Engineering the 2nd Campus Harbin Institute of Technology P.O. Box 2537 Harbin 150090 China

This paper presents an experimental study to investigate the performance of shape memory alloy(SMA) restrainers for mitigating the pounding and unseating of highway bridges when subjected to seismic *** property tests of the SMA wire used in the restrainers are conducted first to understand the pseudo-elastic characteristics of the ***,a series of shaking table tests are carried out on a highway bridge *** structural responses of the highway bridge model equipped with SMA restrainers,installed in the form of deck-deck and deck-pile connections,are analyzed and compared with the uncontrolled *** test results of this study indicate that the SMA restrainers are not only effective in preventing unseating but also in suppressing the seismic-induced pounding of the highway bridge model used in this study.

关键词： shape memory alloy restrainer unseating pounding highway bridge

Research on highway bridge Inspection

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of World Architecture 2023年第4期7卷 58-63页

作者： Jing Cao Chao Wang Henan Communications Planning&Design Institute CO. LTD.Henan 450000Zhengzhou ProvinceChina

highway bridges are important transportation infrastructures in our country,and their quality is related to the people's *** bridge inspection,identification and test are measures to evaluate the quality of highway *** the comprehensive application of various technologies,quality problems of highway bridges can be found early,thereby ensuring traffic *** paper first summarizes the role and the types of highway bridge inspection and *** the problems and solutions in highway bridge inspection and test are analyzed and studied,and some examples are given,in hopes of providing reference for future testing.

关键词： highway bridge inspection and identification

The Application of High Performance Concrete in highway bridge in Cold and Arid Regions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International English Education Research 2014年第9期 21-24页

作者： Zhiyuan Wang Transportation Institute of Inner Mongolia University No.24 Zhaojun Road Yuquan District Hohhot Citylnner Mongolia 010070 P.R.China

High performance concrete originated in the generation of high strength concrete, and it is a new high technology of concrete, is in common with high quality and in concrete. High durability on the perspective of improvement and become, use a lot of high quality raw materials and modern technology, is the main development direction of concrete. Because its comprehensive performance by the superiority of the focus of the society, the strict construction technology in the extensive application in the highway bridge, high performance can the use of concrete can improve the efficiency of its safety and avoid unnecessary accidents

关键词： high performance concrete highway bridge construction technology

Technical Analysis of highway bridge Static Load Test

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Architectural Research and Development 2023年第3期7卷 58-63页

作者： Ke Tu Yingying Ye Daqing Wu Yunyong Zhou Wenming Deng China Merchants Chongqing highway Engineering Testing Center Co. Ltd.Chongqing 400060China

highway bridges are an important part of the transportation industry and can promote social economic construction and *** actual operation,highway bridges are often damaged due to overload and natural factors,which tend to affect the safety and shorten the service life of these *** the overall state and performance of highway bridges is therefore a key *** load test,which is a type of sustainable detection experiment,has many advantages,including low cost,high efficiency,and high *** this paper,the bridge structure is analyzed through the application of theoretical calculations and relevant comparisons,so as to judge the operating state of the bridge.

关键词： highway bridge Static load test Detection technology

Load Testing in bridge Maintenance

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Architectural Research and Development 2024年第3期8卷 63-68页

作者： Bo Liu Xu Meng Ji Li Zhi Tu China Merchants Chongqing highway Engineering Testing Center CO. LTD.Chongqing 400060China Chongqing Construction Science Research Inspection and Testing Co. Ltd.Chongqing 400060China

highway bridges are a crucial component in road transportation *** bridges must be maintained according to usage requirements *** results must be considered before devising a maintenance *** testing is a vital method of assessing the quality and performance of highway *** outcomes of these tests facilitate the formulation of maintenance *** article examines the definition of load testing,its significance,and the process of execution,with the goal of providing support for bridge inspection and maintenance.

关键词： highway bridge Load test and inspection bridge maintenance

Seismic damage of highway bridges during the 2008 Wenchuan earthquake

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Earthquake Engineering and Engineering Vibration 2009年第2期8卷 263-273页

作者： Han Qiang Du Xiuli Liu Jingbo Li Zhongxian Li Liyun Zhao Jianfeng Lab. of Urban Security ＆ Dixaster Engineering of MOE Beijing University of Technology Beijing 100124 China Key Department of Civil Engineering Tsinghua University Belling 100084 China College of Civil Engineering Tianjin University Tianjin 200072 China College of Civil Engineering Qingdao Technological University Qingdao 266033 China

Many highway bridges were severely damaged or completely collapsed during the 2008 Wenchuan earthquake. A field investigation was carried out in the strongly affected areas and over 320 bridges were examined. Damage to some representative highway bridges is briefly described and a preliminary analysis of the probable causes of the damage is presented in this paper. The most common damage included shear-flexural failure of the pier columns, expansion joint failure, shear key failure, and girder sliding in the transversal or longitudinal directions due to weak connections between girder and bearings. Lessons learned from this earthquake are described and recommendations related to the design of curved and skewed bridges, design of bearings and devices to prevent girder collapse, and ductility of bridge piers are presented. Suggestions for future seismic design and retrofitting techniques for bridges in moderate to severe earthquake areas are also proposed.

关键词： Wenchuan earthquake seismic damage seismic design highway bridge field investigation

Seismic fragility analysis of highway bridges considering multi-dimensional performance limit state

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Earthquake Engineering and Engineering Vibration 2012年第2期11卷 185-193页

作者： Wang, Qi'ang Wu, Ziyan Liu, Shukui School of Mechanics Civil Engineering and Architecture Northwestern Polytechnical University Xi'an 710129 China School of Mechanics Civil Engineering and Architecture Chang'an Campus of Northwestern Polytechnical University 883# mailbox Xi'an 710129 China

Fragility analysis for highway bridges has become increasingly important in the risk assessment of highway transportation networks exposed to seismic hazards. This study introduces a methodology to calculate fragility that considers multi-dimensional performance limit state parameters and makes a first attempt to develop fragility curves for a multi-span continuous (MSC) concrete girder bridge considering two performance limit state parameters: column ductility and transverse deformation in the abutments. The main purpose of this paper is to show that the performance limit states, which are compared with the seismic response parameters in the calculation of fragility, should be properly modeled as randomly interdependent variables instead of deterministic quantities. The sensitivity of fragility curves is also investigated when the dependency between the limit states is different. The results indicate that the proposed method can be used to describe the vulnerable behavior of bridges which are sensitive to multiple response parameters and that the fragility information generated by this method will be more reliable and likely to be implemented into transportation network loss estimation.

关键词： highway bridge seismic hazard multi-dimensional performance limit state fragility curves sensitivity

Common Problems and Maintenance Management of highway bridges

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of World Architecture 2022年第6期6卷 29-34页

作者： Jingyu Li Quan Jin Zhejiang Wenzhou Yong Tai Wen Expressway Co. Ltd.Wenzhou 325000Zhejiang ProvinceChina

China is currently undergoing rapid urbanization,and highway and bridge construction projects are increasing in both quantity and *** are one of the important infrastructures in urban *** requirements for the construction of bridge engineering projects are relatively high,but due to the influence of various factors,problems are bound to occur,which affects the aesthetics and functionality of the ***,it is necessary to strengthen the analysis of common problems of highway bridges,understand the causes,and put forward corresponding countermeasures.

关键词： highway bridge Disease Maintenance management Measures

Discussion on Strengthening Design and Construction Technique of Simply Supported Girder bridge

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International English Education Research 2013年第12期 13-15页

With deepening of domestic market opening up to the outside world and fast developing of domestic economy, many old bridges, especially the highway bridges constructed during 1960~1970, bear the heavy traffic loads, which made old highway strengthening project the very pressing task. In this paper, the reason why old bridge is damaged, the requirements for strengthening technology and construction plan for bridge strengthening are analyzed in detail, hopefully, there are some useful proposals provided for old bridge transforming.

关键词： highway bridge reason of damage technical requirements strengthening method

Effect of regional land subsidence on engineering structures:a case study of the 6 km long Su-tong Yantze River bridge

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effect of regional land subsidence on engineering structures...