橡胶坝含砾粗砂地基翻压处理施工实践

Construction Practice of the Turning and Pressing Treatment of the Gravelly Coarse Sand Foundation of the Rubber Dam

摘要:

目前,软弱地基处理技术已日趋成熟,对浅层可液化的土层,可通过表层振动夯实、换填等方法进行治理;对于深层可液化的土层,可采用振冲、强夯、围封、设置砂石桩加强堤基排水等措施进行治理。文章通过分析软弱砂砾地基的物理力学性能,提出翻压的处理方法,可有效解决河堤基础承载力不足、地震液化、不均匀沉降、渗透破坏等问题。

Abstract:

The technology for treating soft foundations has become increasingly mature. For shallow liquefiable soil layers, treatment methods such as surface vibration compaction and replacement can be adopted; for deep liquefiable soil layers, measures such as vibroflotation, dynamic compaction, enclosure, and the installation of sand and gravel piles to strengthen the foundation drainage can be used. This article intends to analyze the physical and mechanical properties of the soft gravel foundation and propose the treatment method of turning and pressing, which can effectively solve the problems such as insufficient bearing capacity of the river embankment foundation, seismic liquefaction, uneven settlement, and seepage failure.