Chen Bin, Wang Xu, Sun Dezhang, Xie Xu
College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China.
State Key Laboratory Breeding Base of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong University, Chongqing 400074, China.
ScientificWorldJournal. 2014;2014:689471. doi: 10.1155/2014/689471. Epub 2014 Jul 21.
It is essential to construct structural health monitoring systems for large important bridges. Zhijiang Bridge is a cable-stayed bridge that was built recently over the Hangzhou Qiantang River (the largest river in Zhejiang Province). The length of Zhijiang Bridge is 478 m, which comprises an arched twin-tower space and a twin-cable plane structure. As an example, the present study describes the integrated system of structural health monitoring and intelligent management for Zhijiang Bridge, which comprises an information acquisition system, data management system, evaluation and decision-making system, and application service system. The monitoring components include the working environment of the bridge and various factors that affect bridge safety, such as the stress and strain of the main bridge structure, vibration, cable force, temperature, and wind speed. In addition, the integrated system includes a forecasting and decision-making module for real-time online evaluation, which provides warnings and makes decisions based on the monitoring information. From this, the monitoring information, evaluation results, maintenance decisions, and warning information can be input simultaneously into the bridge monitoring center and traffic emergency center to share the monitoring data, thereby facilitating evaluations and decision making using the system.
为大型重要桥梁构建结构健康监测系统至关重要。之江大桥是一座最近建成的横跨杭州钱塘江（浙江省最大的河流）的斜拉桥。之江大桥全长478米，由拱形双塔空间和双索面结构组成。作为一个例子，本研究描述了之江大桥的结构健康监测与智能管理集成系统，该系统包括信息采集系统、数据管理系统、评估与决策系统以及应用服务系统。监测组件包括桥梁的工作环境以及影响桥梁安全的各种因素，如主桥结构的应力和应变、振动、索力、温度和风速。此外，该集成系统包括一个用于实时在线评估的预测与决策模块，它根据监测信息提供预警并做出决策。由此，监测信息、评估结果、维护决策和预警信息可以同时输入到桥梁监测中心和交通应急中心，以共享监测数据，从而便于利用该系统进行评估和决策。
