[1]王腾,席爱斌,崔春义,等.堆煤软土场地中群桩体系工作性能数值分析[J].深圳大学学报理工版,2019,36(1):67-73.[doi:10.3724/SP.J.1249.2019.01067]
　WANG Teng,XI Aibin,CUI Chunyi,et al.Numerical analysis of working performance of pile group embedded in soft soil subjected to coal loading[J].Journal of Shenzhen University Science and Engineering,2019,36(1):67-73.[doi:10.3724/SP.J.1249.2019.01067]
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堆煤软土场地中群桩体系工作性能数值分析()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第36卷
期数:
2019年第1期
页码:
67-73
栏目:
土木建筑工程
出版日期:
2019-01-20

文章信息/Info

Title:
Numerical analysis of working performance of pile group embedded in soft soil subjected to coal loading
作者:
王腾1; 2; 席爱斌2; 崔春义1; 孟坤1; 梁志孟1; 邢国雷2
1）大连海事大学土木工程系，辽宁大连 116026；2）国核电力规划设计研究院有限公司，北京 100095
Author(s):
WANG Teng1; 2;  XI Aibin2;  CUI Chunyi1;  MENG Kun1;  LIANG Zhimeng1;  and XING Guolei2
1) Department of Civil Engineering, Dalian Maritime University, Dalian 116026, Liaoning Province, P.R.China 2) State Nuclear Electric Power Planning, Design & Research Institute, Beijing 100095, P.R.China
关键词:
岩土工程; 软土场地; 群桩基础; 堆煤荷载; 有限元; 数值分析
Keywords:
geotechnical engineering; soft soil site;  pile group foundation;  coal load;  finite element;  numerical analysis
分类号:
TU 391
DOI:
10.3724/SP.J.1249.2019.01067
摘要:
为研究堆煤荷载作用下软土场地中群桩基础受力变形特性，基于有限元数值平台ABAQUS，建立了既定工况下考虑桩土相互作用的软土场地-群桩体系数值分析模型，分析了堆煤荷载作用下群桩-软土场地体系的相互作用，探讨了堆煤荷载作用下软土场地中群桩基础桩身受力及变形规律. 结果表明，软土场地中，在堆煤荷载和上部结构荷载共同作用下，群桩基础桩身易产生较大侧向位移，同时桩身会产生较大拉应力，使得桩身稳定性、变形及承载能力无法满足工程要求. 此类软弱场地土中存在堆煤荷载作用时，需首先对场地采取真空预压地基处理措施，并进行计算校核，使群桩-软基相互作用体系达到承载变形要求.
Abstract:
In order to study the mechanical characteristics of pile group foundation in soft soil site with coal load, we establish the two-dimensional numerical analysis model considering pile-soil interaction for the pile group-soft soil ground system based on finite element numerical platform ABAQUS. We discuss the mechanism of internal force and deformation of interaction system of pile group in soft soil site. The results show that the pile body of pile group foundation is liable to produce large lateral displacement under the joint action of coal-piling load and superstructure load in soft soil site, and the pile body will produce large tensile stress, which makes the stability, deformation and bearing capacity of pile body unable to be full. For coal loading on this kind of soft soil ground, the vacuum preloading foundation treatment measures should be taken on the site, meanwhile the calculation and verification should be carried out to make the pile group-soft ground interaction system meet the engineering requirements.

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更新日期/Last Update: 2019-01-30