考虑应变软化的单桩桩周土固结解

长江科学院院报 ›› 2012, Vol. 29 ›› Issue (1): 35-38.

考虑应变软化的单桩桩周土固结解

曹权^1a,1b，²，陈鸿²，施建勇^1a,1b，雷国辉^1a,1b，艾英钵^1a,1b

1.河海大学 a.岩土工程研究所; b.岩土力学与堤坝工程教育部重点实验室，南京210098;2.深圳市市政设计研究院有限公司，深圳518029)

出版日期:2012-01-01 发布日期:2012-01-10
作者简介:曹权(1970-)，男，安徽安庆人，高级工程师，国家注册土木工程师（岩土），博士，主要从事土的原位测试研究，
基金资助:
国家自然科学基金资助项目(50878075)

Analytical Solution for Soil Consolidation Around SinglePile afterPile Driving Considering Strain Softening

CAO Quan ^1,2,3, CHEN Hong³, SHI Jian-yong ^1,2, LEI Guo-hui ^1,2, AI Ying-bo ^1,2

1.Institute of Geotechnical Engineering, Hohai University, Nanjing210098, China; 2.Key Laboratoryof Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing210098, China; 3.Shenzhen Municipal Design and Research Institute Co., Ltd, Shenzhen518029, China

Online:2012-01-01 Published:2012-01-10

摘要/Abstract

摘要： 基于一维固结理论，假定桩壁为不透水边界，引入了考虑应变软化和桩径大小影响的超静孔隙水压力的解析解作为初始条件，并考虑了弹性区超静孔隙水压力对桩周土固结的影响，采用数学物理方法推导出桩周土的固结解。理论计算值和现场孔压监测成果吻合较好，表明该解析解对预测沉桩后桩周土中孔压消散过程具有一定实用价值。

关键词: 应变软化, 静压桩, 饱和软黏土, 超静孔隙水压力, 固结解

Abstract: The solution of soil consolidation around piles in saturated soft clay was deducted in this paper via methods of mathematical physics based on Terzaghi’s one-dimensional consolidation theory. The pile wall was assumed as impermeable boundary, and the analytical solution of excess pore water pressure in which the effects of strain softening and pile diameter are considered was taken as the initial condition. In addition, the effect of excess pore water pressure in elastic region on the consolidation of soils around piles was also taken into account. The calculated results agree well with the in-situ pore pressure measurements. The solution in this paper is of practical value for the prediction of excess pore water pressure dissipation in saturated soft soils around the driven piles.

中图分类号:

TU473

曹权1a, 1b, 2, 陈鸿2, 施建勇1a, 1b, 雷国辉1a, 1b, 艾英钵1a, 1b. 考虑应变软化的单桩桩周土固结解[J]. 长江科学院院报, 2012, 29(1): 35-38.

CAO Quan-1a, 1b , 2 , CHEN Hong-2, SHI Jian-Yong-1a, 1b , LEI Guo-Hui-1a, 1b , AI Ying-Bo-1a, 1b . Analytical Solution for Soil Consolidation Around SinglePile afterPile Driving Considering Strain Softening[J]. JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI, 2012, 29(1): 35-38.

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