桩板结构在软土地区多管线地段的应用研究

Study on the application of pile plate structure in multiple pipeline lot in soft soil area

昆明南连接线高速公路环湖路下匝道为软土路基工点,为保证承载力及工后沉降要求,施工图采用CFG桩加固,但在施工过程中发现该处地下雨、污、煤气等管线分布众多,CFG桩无法实施。通过资料收集、物探等手段查明地下管线空间分布的情况下,遂将CFG桩变更为钻孔灌注桩桩板结构跨越管线并得到了良好实施效果。介绍的桩板结构跨越方案为软土地区多管线地段的地基处理提供一种解决思路,可为类似工点提供借鉴。

The underpass of Huanhu Road on the Kunming South Link Expressway is a soft soil subgrade work point.In order to ensure the bearing capacity and post-work settlement requirements,the construction map is reinforced with CFG piles,but it is found that the underground rain,pollution,and gas are found in the construction process.There are many pipelines,CFG piles can not be implemented.Under the conditions of data collection and geophysical exploration to find out the spatial distribution of underground pipelines,the CFG pile was changed into a bored pile structure across the pipeline and achieved good implementation results.The pile-plate structure span scheme introduced in this paper provides a solution for the foundation treatment of multi-pipeline areas in soft soil areas and can provide reference for similar work points.