论文部分内容阅读
复合地基是加固区由基体和增强体两部分组成的人工地基。本文结合工程实例,分析了某高速公路既有通道开裂的原因,提出了采用树根桩与静压注浆相结合进行地基加固的治理方案,先通过静压注浆使土层强行固结,形成承载力较高且均匀的加固体,并可降低地基的不均匀沉降。同时采用树根桩加以分担部分上部荷载,以提高地基承载力、控制沉降及涵身继续倾斜。并介绍了该复合地基的方案设计和施工。实践证明,适当运用复合地基进行地基处理能取得良好的加固效果,且经济合理。
Composite foundation is reinforced by the two parts of the matrix and enhance the artificial foundation. Based on the engineering example, this paper analyzes the reason of the cracking of an existing highway in a highway, proposes a management plan that uses the combination of root piles and static pressure grouting to reinforce the ground. The static consolidation, The formation of higher carrying capacity and uniform reinforcement, and can reduce the uneven settlement of the foundation. At the same time, the root pile is used to share part of the upper load in order to improve the bearing capacity of the foundation and control the settlement and the continued inclination of the culvert. The scheme design and construction of the composite foundation are introduced. Practice has proved that proper use of composite foundation for foundation treatment can achieve good reinforcement effect, and economic and reasonable.