考察加拿大城市桥梁建设及相关启示

本文系统地介绍了笔者在加拿大考察期间,对渥太华、蒙特利尔、多伦多和温哥华等地的城市桥梁建设的总体印象和分类考察情况。其中,阐述了加拿大在城市桥梁建设上体现传统与创新的成功经验,并介绍了其在城市古老和近代桥梁、城市大跨径桥梁和其它现代城市桥梁的建设情况。笔者希望为国内同行提供有借鉴意义的资料和相关启示,以期促进我国城市桥梁建设的健康发展。     

考察美国城市大跨径桥梁建设（上）

本文系统地介绍了前些年笔者考察美国期间,对纽约、匹兹堡和旧金山等地城市桥梁建设的总体印象以及对悬索桥、拱式桥和斜拉桥等分类考察的情况,还介绍了近年来美国城市桥梁倒塌的情况,从而进一步提出了考察的相关启示和建议,希望为国内同行们提供有借鉴意义的资料和启示,以期促进我国城市桥梁建设的健康发展。     

考察美国城市大跨径桥梁建设（下）

本文系统地介绍了前些年笔者考察美国期间,对纽约、匹兹堡和旧金山等地城市桥梁建设的总体印象以及对悬索桥、拱式桥和斜拉桥等分类考察的情况,还介绍了近年来美国城市桥梁倒塌的情况,从而进一步提出了考察的相关启示和建议,希望为国内同行们提供有借鉴意义的资料和启示,以期促进我国城市桥梁建设的健康发展。     

考察韩国城市桥梁建设(上)

本文系统地介绍了笔者考察韩国期间,对首尔、釜山和济州岛等城市桥梁建设的总体印象和分类考察的情况、相关启示和建议,为国内同行们提供有借鉴意义的资料和启示,以期促进我国城市桥梁建设的健康发展。     

考察韩国城市桥梁建设(下)

本文系统地介绍了笔者近期考察韩国期间,对首尔、釜山和济州岛等城市桥梁建设的总体印象和分类考察的情况、相关启示和建议,为国内同行们提供有借鉴意义的资料和启示,以期促进我国城市桥梁建设的健康发展。     

考察丹麦城市桥梁建设及相关启示

本文系统地介绍了前几年笔者考察北欧国家—丹麦期间,对哥本哈根、马尔默、斯卡恩等城市桥梁建设的总体印象和分类考察的情况、相关启示和建议,为国内同行们提供有借鉴意义的资料和启示,以期促进我国城市桥梁建设的健康发展。     

德国 城市桥梁建设一瞥

文章系统地介绍了前些年笔者两次考察德国期间,对柏林、慕尼黑、法兰克福、汉堡和汉诺威等城市的城市桥梁建设的总体印象和分类考察的情况、相关启示和建议,为国内同行们提供有借鉴意义的资料和启示,以期促进我国城市桥梁建设的健康发展。     

融合传统与创新理念的英国城市桥梁建设

本文系统地介绍了笔者考察英国期间，对伦敦、诺丁汉、考文垂和利兹等城市的城市桥梁建设的总体印象和分类考察的情况，以及获得的相关启示，并提出了一些建议，希望为国内同行提供有借鉴意义的资料，以期促进我国城市桥梁建设的健康发展。     

基于传统和创新的日本城市桥梁(上)

本文系统地介绍了前几年笔者考察亚洲国家—日本期间,对东京、大阪、神户和名古屋等城市桥梁建设的总体印象和分类考察的情况、相关启示和建议,呈现了日本桥梁建设在古老桥梁建设方面的特色,及其桥梁结构传统与现代概念有机结合的特点,展现了其独树一帜的风格。希望本文为国内同行们提供有借鉴意义的资料和启示,以期促进我国城市桥梁建设的健康发展。     

基于传统和创新的日本城市桥梁(下)

本文系统地介绍了前几年笔者考察亚洲国家一日本期间,对东京、大阪、神户和名古屋等城市桥梁建设的总体印象和分类考察的情况、相关启示和建议,呈现了日本桥梁建设在古老桥梁建设方面的特色,及其桥梁结构传统与现代概念有机结合的特点,展现了其独树一帜的风格。希望本文为国内同行们提供有借鉴意义的资料和启示,以期促进我国城市桥梁建设的健康发展。     

Inspection and evaluation methods on dynamic performance of highway bridges under moving vehicular loads

This paper is concerned with the inspection and evaluation methods on dynamic performance of highway bridges under moving vehicular loads. The background and development process of the existing specifications are stated and discussed. Up to now, four specifications or drafts for approval related to dynamic performance inspection and evaluation have been published. The deficiencies of the existing specifications are discussed and the differences among them are compared, including dynamic loading test methods, data processing, and evaluation criteria. Finally, some key research topics about the inspection and evaluation methods on dynamic performance of highway bridges are proposed.     

大跨桥梁结构损伤检测的研究进展

通过介绍国内外大跨桥梁结构损伤识别方法的研究进展,对人工检测、振动模态检测、无损检测、概率统计方法检测四种大跨桥梁结构损伤识别方法进行了分析和总结,为我国大跨桥梁结构施工企业在大跨桥梁结构施工方面的进一步发展提供借鉴和参考。     

钢筋混凝土梁桥的常见病害与处理

针对钢筋混凝土梁桥经常出现的几种病害状况,提出相应的处理方案及具体措施,为此类桥梁的检测、维修加固、设计和施工提供参考及建议,以推广钢筋混凝土梁桥的应用。     

加拿大Boulevard de la Concorde立交桥倒塌事故

对2006年9月30日发生在加拿大蒙特利尔北部拉瓦尔地区的Boulevard de la Concorde立交桥的一段混凝土梁整体坠落事故进行介绍。从该桥的检测记录、倒塌的过程、破坏的界面以及损伤的发展等方面展开讨论,并总结出该桥倒塌的主要原因。同时,针对我国桥梁的实际状况提出建议以确保其安全使用。     

桥梁检测技术研究

简述了桥梁结构检测的主要内容与评定方法,结合目前桥梁检测技术发展的现状,对桥梁检测技术进行了综合评价,并介绍了桥梁检测技术的发展前景,从而确保桥梁长期安全运营。     

某斜腿刚构桥的检测与评定

介绍了某运营了近20年的斜腿刚构桥的检测评定工作,探讨了该类型桥梁病害检查、无损及静动载检测方法、技术状况及承载能力评定等内容,对同类型桥梁的全面检测评估有一定的工程参考价值。     

斜拉悬索混合管桥桥面位移变化分析

以桥梁的索的健康监测为目的,重点分析了在单根拉索损伤时斜拉悬索混合管桥桥面位移的变化情况,并将其变化特征做了详细总结,为索的健康监测提供了数据依据.     

Application of radar techniques to the verification of design plans and the detection of defects in concrete bridges

Non-destructive tests (NDT) are an essential tool used in special inspections to gather detailed information about the condition of a bridge. The inspection of bridge decks is a critical task, and, currently, can be successfully carried out using a wide range of NDT techniques. Nevertheless, some of these techniques are excessively expensive and time consuming. One of these techniques, the ground penetrating radar (GPR), has been used for some decades in the non-destructive inspection and diagnosis of concrete bridges. GPR is useful to find general information about the true position of reinforcement and tendon ducts, and check the quality of the construction and materials. A significant number of reinforced and prestressed concrete bridges are deteriorating at a rapid rate and need to be repaired and strengthened. During these rehabilitation processes, designers are often faced with a lack of original design plans and unawareness of the real position of reinforcement and tendon ducts. In this paper, three case studies of the use of GPR techniques for the inspection of concrete bridges are presented and analysed. The main aim of this research is to show the strong need and usefulness of these techniques, which can provide non-visible information about structural geometry and integrity required for strengthening and rehabilitation purposes.     

公路桥梁病害分析及检查方法

对桥梁的常见病害进行归纳和分析总结,并介绍了桥面铺装、伸缩缝装置、桥梁上部结构、桥梁墩台、基础的检查方法,通过对现有桥梁进行检查,了解其各部位损坏的程序,为桥梁的维修加固提供必要的依据。     

A simplified management procedure for bridge network maintenance

Structural problems due to corrosion, ageing, durability, aggressive environments, materials defects, lack of ductility and unforeseen behaviour under seismic loads may significantly compromise the resistance and safety of bridges. Scheduled maintenance of bridges becomes important to ensure complete serviceability of the road network. Among existing bridge management systems (BMSs), this work is a contribution to the evaluation criteria of bridge condition by means of visual inspection, prediction of future structural condition and planning of maintenance intervention. After a brief review of some existing BMSs, a simple new procedure for evaluation of bridge condition by means of visual inspection, aimed at general planning of maintenance in a BMS framework, is presented in this paper. This procedure is applied to stock, including about 200 bridges and viaducts, of the Veneto region road network in the north-eastern part of Italy, and is then discussed.