浅谈桥梁检测与评估

作者指出了如何采用正确的检测手段和评估方法，提供更安全的服务，确保桥梁的高质量运营。     

电桥故障的判断及教学

利用检流计测量电路中电流的流向，电位的高低，联系电路理论，推判实验故障，领悟电路故障排除的方法，提高学生理论联系实际，分析问题，解决问题的能力。     

城市桥梁设计荷载标准的编制

建设部经过严格审查批准了由建设部城市建设城市建设研究室主编的《城市桥梁设计荷载标准》，编号为ＣＪＪ７７－９８的新规范由中国建筑工业版社出版。自１９９８年１２月１日起施行，并指定为强制性的行业标准。同济大学桥梁系作为参加单位参与了规范的研究与制订工作。现将编制过程的主要依据，内容及有关原则与重大改革做一说明。ＣＪＪ７７－９８规范由北京市市政工程研究院负责管理，建设部城市建设研究院负责具体解释工作。     

益阳资江三桥静动力荷载试验分析

介绍了益阳资江三桥的结构特点,以及成桥静、动力荷载试验的仪器、方法与测试结果.通过静动力荷载试验,对该桥在营运状态下的受力特点进行了分析,说明了采用钢管混凝土结构的合理性.     

Construction and control technology of the main bridge superstructure of Sutong Bridge

The Sutong Yangtze River Bridge （short as Sut.ong Bridge） is now the largest span cable-stayed bridge in the world. The construction of the superstructure of the middle bridge covered several stages including erection of the big block girders for the side span, assistant span and tower area, erection of standard girders and closure of the middle span. The big block girders were hoisted by a floating crane, and the standard girders were hoisted by a double crane system on the deck. The pushing assistant method was adopted for the middle span closure construction. Furthermore, key technologies and innovative methods used in the processes of girder erection and cable assemblage in all stages were expatiated systematically. An all-stage self- adaptive geometry control method was used in the construction process. By accurately controlling the unstressed dimensions and shape of all structural components in each step, and realization that the control system and the controlled system adapt to each other, the goal was to make control of the final line shape and inner force of the bridge structure achievable. Two solutions, including GPS based and total station based dynamic geometry monitoring systems, were used to resolve the measure problem under the wide - range of wind-induced vibrations in the long cantilever state. Finally, research on the wind-induced vibration of the superstructure during the construction period was executed. Buffeting response analysis to the longest single and double cantilever states were carried out. The analysis and evaluation of wind resistance safety of the main girders under the longest single cantilever state was made, and corresponding wind resistance measures were suggested. The as-built geometric error and cable force error were controlled in a required design range, and this whole technological achievement can be a benchmark for construction of other large span cable-stayed bridges in the future.     

Design and construction of Sutong Bridge tower

Sutong Bridge tower which is 300.4 m is the highest one in the world. The tower anchor area uses the steelconcrete composite structure, its structure and the stress mechanism are complex, so it must be paid more attention to the structure durable issue. The 300 m height makes the tower quite sensitive to the environmental factors such as wind and temperature. The wind resistance safety of tower in construction stage is especially important. In this paper, the design of composite structure is introduced. The key technologies of tower geometry control and wind resistance in construction stage are analyzed.     

Design and construction of Sutong Bridge deep-water main pylon foundations

This paper, from three aspects including construction conditions, foundation design and construction, intro duces some considerations in the designing of main-pylon foundations and some practical measures to deal with certain unfavorable construction conditions, such as deep water, tidal effect, soft stratum and heavy traffic, during the construction of main-pylon foundations.     

苏通大桥钢箱梁吊装专用设备研究与应用

苏通大桥为主跨1 088 m的钢箱梁斜拉桥,钢箱梁分为5部分：辅助跨、边跨及索塔区大块梁段,悬拼标准梁段,边、中跨合龙梁段。大块梁段在工厂组拼,用大型浮吊安装。由于通航净空高,传统桁架结构吊具难以满足国内现有浮吊吊高与吊重要求,所以提出苏通大桥超大、超重钢箱梁节段轻型吊索具结构,并介绍了吊索具设计与使用要点。标准梁段采用桥面吊机悬臂安装。由于主梁节段宽且重,加上桥区恶劣的气象和水文条件,以及斜拉索长索梁端牵引需要,对桥面吊机结构和性能提出了较高要求。介绍了苏通大桥集梁段吊装和拉索安装功能为一体的桥面吊机设     

组合梁斜拉桥施工仿真分析

组合梁斜拉桥作为一种高次超静定结构，其施工过程中的各项参数变化都会对成桥线形与应力造成影响，通过计算机仿真分析准确模拟其施工过程，并对计算结果进行分析，可作为施工控制中决策的依据与参考。