等应变条件下碎石桩复合地基的固结解析解  

Analytical solution of consolidation for gravel pile composite foundation under equal strain conditions

作　　者：白闰平[1,2] 李国英[2] 米占宽[2] 

机构地区：[1]同济大学地下建筑与工程系,上海200092 [2]南京水利科学研究院水利部土石坝破坏机理与防控技术重点实验室,江苏南京210029

出　　处：《水利水运工程学报》2016年第3期53-60,共8页Hydro-Science and Engineering

基　　金：国家自然科学基金重大研究计划集成项目(91215301);中央级公益性科研院所基本科研业务费专项资金项目(Y312011;Y313012;Y314010)

摘　　要：根据现有几种较为经典散粒体桩复合地基的固结解析理论,推导了碎石桩复合地基在等应变条件下,考虑井阻和涂抹效应的固结解析解。推导过程中,保证了孔压一阶和二阶微分方程,在各区域分界面的连续性,对比分析了本文解析解与现有几种较为经典解析解的异同点,最后通过对比本文解、Barron解、Hansbo解、谢康和解的各计算值以及数值模拟结果,验证了本文解的正确性。According to the existing classical theories of consolidation for granular material composite foundation,an analytical theory of consolidation for gravel pile composite foundation is derived considering that the vertical strains of the composite foundation are equal at the same depth,and well resistance and smear effect are taken into account in the derivation of the analytical solutions in this paper. A continuity of the first and the second order differential equations for pore pressure is ensured in the shared boundary of different regions in the derivation. By comparing the theory of consolidation derived in this paper and the existing classical theories of consolidation,analyses of some differences between each theory have been made. Finally,the theory of consolidation derived in this paper has proved that the analytical solution derived in the study is correct by comparing the solution given in the paper,the solutions of existing classical theories of consolidation and FEM analysis results.

关 键 词：解析解 固结 碎石桩复合地基 等应变条件 

分 类 号：TU47[建筑科学—结构工程]