Frontier of continuous structural health monitoring system for short&medium span bridges and condition assessment  

作　　者：Ayaho MIYAMOTO Risto KIVILUOMA Akito YABE 

机构地区：[1]Department of Civil Engineering,Aalto University,Aalto,Finland [2]Sustainable Solutions Dept.,KOZO KEIKAKU Eng.Inc.,Tokyo,Japan

出　　处：《Frontiers of Structural and Civil Engineering》2019年第3期569-604,共36页结构与土木工程前沿（英文版）

摘　　要：It is becoming an important social problem to make maintenance and rehabilitation of existing short and medium span(10-20 m)bridges because there are a huge amount of short and medium span bridges in service in the world.The kernel of such bridge management is to develop a method of safety(condition)assessment on items which include remaining life and load carrying capacity.Bridge health monitoring using information technology and sensors is capable of providing more accurate knowledge of bridge performance than traditional strategies.The aim of this paper is to introduce a state-of-the-art on not only a rational bridge health monitoring system incorporating with the information and communication technologies for lifetime management of existing short and medium span bridges but also a continuous data collecting system designed for bridge health monitoring of mainly short and medium span bridges.In this paper,although there are some useful monitoring methods for short and medium span bridges based on the qualitative or quantitative information,mainly two advanced structural health monitoring systems are described to review and analyse the potential of utilizing the long term health monitoring in safety assessment and management issues for short and medium span bridge.The first is a special designed mobile in-situ loading device(vehicle)for short and medium span road bridges to assess the structural safety(performance)and derive optimal strategies for maintenance using reliability based method.The second is a long term health monitoring method by using the public buses as part of a public transit system(called bus monitoring system)to be applied mainly to short and medium span bridges,along with safety indices,namely,"characteristic deflection"which is relatively free from the influence of dynamic disturbances due to such factors as the roughness of the road surface,and a structural anomaly parameter.

关 键 词：condition assessment short&medium span BRIDGE structural health monitoring(SHM) long-term data collection system maintenance BRIDGE performance information technology LOADING vehicle(public bus) in-situ LOADING 

分 类 号：X[环境科学与工程]