某立交桥墩柱偏位原因分析及纠偏处理

Cause analysis and correction of deviation of an interchange bridge pier

结合软土场地某互通立交桥墩柱受驳岸绿化填土的影响发生明显偏位工程案例,根据场地土方实际堆、卸载情况,建立有限元模型对墩柱及桩基的变形与内力进行分析,通过采取卸载+应力解除+高压旋喷挤土+支座反力纠偏等一系列纠偏工序的实施,最终完成了墩柱和桩基的纠偏,有效地保证了桥梁墩柱和桩基的安全。

Combined with the case of an interchange bridge pier column obviously deviated due to the influence of revetment green fill in soft soil, the finite element model is established to analyze the deformation and internal force of pier column and pile foundation according to the stacking and unloading of earthwork.Through the implementation of a series of rectification procedures, such as earth unloading, stress relief, high-pressure jet grouting, and support reaction force rectification, the rectification of pier and pile foundation is finally completed, which effectively ensures the safety of bridge pier and pile foundation.