堆载法在桥梁基础纠偏过程中的应用

桩周围不均匀堆载产生的土体沉降及侧向变形会加大桩基内力,引起桩基侧移。根据相关文献资料的研究成果,提出采用堆载法进行桥墩基础的桩基纠偏,结合软土地区某匝道桥的纠偏过程,监测结果与预期效果基本吻合。软土地区在既有桩基附近堆载须要严格控制堆载高度和堆载速度,做好桩周土体的加固措施。

Application of Surcharge Preloading Method in Deviation Rectification of Bridge Foundation

The earth settlement and the lateral deformation caused by the non-uniform heaped load surrounding the pile will increase the inner force of pile foundation to result in the lateral displacement of pile foundation. Based on the studying result of the relative literatures, the article puts forward the use of surcharge preloading method for the deviation rectification of bridge pier foundation. Combined with the rectification process of a ramp in the soft soil area, the monitoring result is basically matched with the expected effect. It must be to strictly control the height and speed of surcharge preloading when the surcharge preloading is implemented near the existing pile foundation in the soft soil area. The reinforcement measures should be taken well for the earth surrounding the piles.