摘要
对于高速铁路路基CFG桩端置于较完整石灰岩顶面,桩侧为硬塑粉质粘土的端承桩,通过最大荷载为设计荷载1.25倍、2.00倍的对比复合地基承载特性试验,并经计算分析认为:最大荷载为设计荷载1.25倍的最大回弹量对应沉降量荷载与摩阻力之和,为该端承桩复合地基承载力特征值。
Against the end-bearing pile at high-sped railway subgrade, in respect of which CFG pile end is positioned on a relatively complete limestone top surface and the pile side is hard plastic silty clay, the tests of composite foundation＇s bearing characteristics with the maximum load being 1.25 or 2. 00 times the design load are carried out. Through calculation and analysis, we consider that where the maximum load is 1.25 times the design load, the maximum resilient modulus corresponds to the sum of settlement load and frictional resistance, which is the characteristic value of the bearing capacity of the end-beating pile composite foundation.
出处
《路基工程》
2013年第1期117-119,125,共4页
Subgrade Engineering
关键词
CFG端承桩
最大回弹量
沉降量
设计荷载
最大荷载
弹性阶段
特征值
CFG end-bearing pile
maximum resilient modulus
settlement
design load
maximum load
elastic stage
characteristic value
