某板梁桥支座更换的施工监控方法

A plate girder bridge construction monitoring method of bearing replacement

桥梁支座更换施工过程中其梁体受到下部的顶升力和上部的车辆荷载以及梁体本身自重等多因素的影响,梁体顶升过程中梁体的位移、应变(应力)的变化必须可知、可控。通过对某桥板梁位移、应变的监控来了解位移、应变的变化情况,指导工程施工。

Bridge bearing replacement in the construction process of the beam top lift by the lower and upper body of vehicle load and the influence of many factors such as weight of beam body itself. The beam body centre sill jack - up process body displacement and strain of the （stress） changes must be known and controllable. Through the bridge plate beam displace- ment and strain monitoring to understand the change of displacement, strain, guide the engineering construction.