State-of-the-art and state-of-the-practice and guidelines of bridge health monitoring in the mainland of China

摘要

Structural health monitoring (SHM) systems more and more become a technique for ensuring the health and safety of bridges and also an important approach for research of the damage accumulation or even disaster evolving characteristics of bridges, and attract prodigious research interests and active development interests of research community, engineers and public sector since a great number of bridges are planning and constructing each year in mainland China (Ou, 2003).SHM system includes sensor module, data acquisition and process system, signal transmission system, damage detection, model updating, safety evaluation, data management, integrated system, decision-making techniques of health status of structure based on measured data. In the past decade, Chinese researchers have made great progress and fruit achievements in research and application of SHM. In this paper, the state-of-the-art and state-of-the-practice of SHM for bridges in the mainland of China are summarized.In this paper, some advance smart sensors developed by Chinese researchers, especially optical fiber Bragg-grating (OFBG) sensor, OFBG-based smart self-sensing products are introduced. Wireless strain sensors, wireless accelerometers and sensor networks are presented. The implementations of SHM systems for bridge are summarized. And then two SHM systems for two cable-stayed bridges are presented in detail as examples to demonstrate the development of SHM in the mainland of China. Based on the research and application, guidelines of SHM for bridges are urgent to publish. Recent progress on this topic is also introduced in this paper.