在役桥梁结构病害检测若干问题剖析

ANALYSIS ON SEVERAL PROBLEMS DETECTED IN THE EXISTING BRIDGE STRUCTURE

正值交通基础设施突飞猛进的发展时机,在役和新建的桥梁健康安全状况自然成为学术界和工程界的心腹问题。根据我国钢筋混凝土桥梁现役情况,从桥梁的桥面、上部结构、下部结构等方面剖析了桥梁结构病害,针对桥梁结构常规检测方法及部分新型的检测技术,结合武汉天兴洲长江大桥主桥通车试验与检测手段进行分析,就桥梁的安全运营与健康维护提出几点建议,以期为今后推广桥梁检测新技术,做好监测工作,延长现役桥梁承载力提供可靠方法。

As an advance rapidly development opportunity on transport infrastructure, the health-safety issues of existing and the new bridge naturally become an confidant problem to the academic and engineering circles. First of all, this paper briefly states the active case of reinforced concrete bridges in China. Then the common diseases existed in the bridge structure are analyzed in terms of the bridge deck system, superstructure and substructure. Secondly, the conventional methods of bridge structures and some new detection technology is introduced, then the detection means which was applied to the traffic text on main bridge of Tianxingzhou Yangtze River Bridge are analyzed. Finally, some suggestions on the safety operations and health maintenance of the bridge are proposed. It is expected to provide a reliable method for promoting new bridge inspect technologies in the future, doing well in monitoring and extending carrying capacity of bridge in service.