厦门石鼓山立交H匝道桥的加固与施工方案

Reinforcement and construction program of Xiamen Shigu Mountain Interchange H Ramp Bridge

厦门石鼓山立交近年来交通量剧增,桥梁超载情况比较严重。动静载试验发现H匝道桥主梁应变及挠度实测值偏大,且5号桥台一侧的板式橡胶支座出位偏移较严重。通过在桥梁跨中增加支撑,和对支座进行纠偏等桥梁加固措施,增大了梁体的线刚度,减少了跨中负弯矩。加固后对桥梁进行结构验算,结构是安全的。

In recent years, Xiamen Shigu Mountain Interchange surge in traffic, Bridges overload situation is more serious. Found by static load test, H ramp bridge strain and deflection of the main beam measured value is too large,and the 5th laminated rubber bearing out -migration of more serious side abutment. By increasing support in the bridge midspan, and carry on bearing corrective measures, such as bridge strengthening,the stiffness of the beam is increased and the negative bending moment of midspan is reduced. After checking the structural reinforcement of the bridge, the structure is safe.