武汉天兴洲长江大桥伸缩缝位移监测技术研究

Research on Expansion Joint Displacement Monitoring Technology of Wuhan Tianxingzhou Yangtse Bridge

桥梁的结构位移是衡量结构安全性的一个重要因素。过大的结构位移不仅引起应变超限,还会影响桥梁的正常使用。结构的位移变化还能反映结构内部的病害。以武汉天兴洲公铁两用长江大桥公路桥为研究对象,用光栅位移传感器进行伸缩缝位移监测,并通过梁端位移测试数据,评判结构的安全性。

The bridge structure displacement is an important factor of its structure safety. The excessive structure displacement will not only cause the overrun of strain, also affect the bridge normal use. The structure displacement change can reflect the structure internal problems. The Wuhan Tianxingzhou Yangtze Highway-Railway Bridge of dual-use is set as a research object, it monitors the displacement expansion joint by using grating displacement sensor, and judges the safety of structure with beam displacement test data.