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bao he sha zhong jing ya chen zhuang dui chao kong xi shui ya li de ying xiang
Author(s): 
Pages: 207-209,221
Year: Issue:  8
Journal: Urban Roads Bridges & Flood Control

Keyword:  模型试验静压桩锤击沉桩超孔隙水压力离散元沉桩速度;
Abstract: 通过采用模型试验,研究直径为37 mm的闭口模型桩静压沉桩时,饱和砂中的超孔隙水压力的产生规律.发现饱和砂中沉桩引起的超孔压沿径向远离桩身表面的时候,超孔隙水压力先增大后减小,超孔隙水压力最大值发生在距桩身表面径向距离r=2D(D是桩径)处.沿深度方向,中间部分的土体中超孔压最大,上部和下部的土体中产生的超孔隙水压力较小.最后采用离散元软件研究了静压沉桩速度对超孔隙水压力的影响,发现沉桩速度越快,所产生的超孔压越大.
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