有整体侧移的圆井支护桩的设计与研究

沿河岸边铺设的污水管道井体经常会遇到一侧临河另一侧靠近建筑物的情况;基坑支护结构一方面存在坑外有土坑内无土的情况,另一方面由于井体两侧荷载不均匀,还会发生整体侧移,给结构的受力增加了很不利的因素。为了减少支护桩的内力和位移,某污水管道井基坑支护设计采用了逆作法施工方案,计算中考虑了整体侧移对支护桩的影响,考虑了逆作法井体在施工阶段对支护桩的作用。

Design and Research of the Retaining Piles with Whole Side Displacement of Circle Well Pit

The well of sewage pipe along the river shore often meet with the situation that one side of the well approach the riverside and another side approach the building. For pit structure, on the one hand there are earth outside but no earth in the pit, on the other hand, because of the non-uniform lood of well body, retaining piles will appear whole side displacement. Therefore there are disadvantageous factor for the structure. In order to reduce the internal force and the displacement of retaining pile, the top-down construction plan was applied for the retaining pit of one sewage pipe well. In the computation influerenee of whole side displacement to the retaining pile and the action of wall of the well by the top-down construction to the retaining pile have been considered.