摘要
在软土地基进行工程建筑时,常常会遇到两方面的工程地质问题,即地基土的承载力不足和建筑物产生过大的沉降。特别是旧路改建工程,由于软土孔隙比大、渗透系数小、沉降稳定时间长、很容易造成新旧路堤的不均匀沉降,因此,需要采取相应的治理措施。从工程实际出发,较为系统地阐述了碎石桩法在公路工程中处理软土地基的加固机理、设计方法,并采用应力面积法对加固前后地基土的最终沉降量进行了计算,同时采用了砂井地基的固结理论着重分析了碎石桩法对软土地基渗透固结的影响。
When constructing on soft ground, there were two geological problems, the lack of bearing capacity of ground and the big settlement of the building. Especially in the reconstruction of the old highway, it would bring a difficult problem of non - uniform settlements between the new and the old embankment because of the big void ratio, the small permeability coefficient and the long time of settlement. Therefore, the appropriate measures should be adopted to avoid the problem. This paper systematically discussed the consolidation method and the design of treating the soft ground with gravel piles in highway engineering, calculated the last settlement of the ground before and after the consolidation used stress area method, and mainly analyzed the permeability and consolidation influence of the gravel piles to the soft ground based on the consolidation theory of sand drains ground.
出处
《森林工程》
2006年第6期26-28,共3页
Forest Engineering
关键词
渗透固结
碎石桩
应力面积法
不均匀沉降
permeability and consolidation
gravel piles
stress area method
nonuniform settlement
