Influence analysis of top beam elevation on surroundings around deep pits

doi:10.11779/CJGE2018S1033

IR > 土木工程学院

	Influence analysis of top beam elevation on surroundings around deep pits
	Wang, Zheng-Zhen 1,2; Gong, Wei-Ming 1,2; Dai, Guo-Liang 1,2; Zhou, Yong3,4 ; Xu, Feng 1,2
	2018-05-01
发表期刊	Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering
ISSN	10004548
卷号	40 页码:205-211 and 64
摘要	Decreasing the top beam elevation to reduce the project cost, which often leads to larger displacement of the surroundings, is very popular in the design of foundation pits. Based on a deep foundation pit project, the phenomenon that the supporting structure is effective, the settlement of buildings meets the design requirements, while the ground settlement is out of control is analyzed by comparing the measured data of the strut forces, displacements of the surroundings and displacements of retaining pile tops. The decrease of top beam elevation is supposed to be a main influence factor for the larger ground settlement. Finally, the finite element simulation method is used to analyze the influence of top beam elevation on the surroundings deeply. The results show that whether the supporting structure is effective or not should not be judged by the displacement of soil at top of the foundation pit. Under the vertical load, large displacement will take place for the soil at top of the foundation pit because of the loss in the lateral restraint caused by the decreasing of top beam elevation. There exists a relationship between the settlement and the horizontal displacement of soil, but the decreasing of top beam elevation has a larger impact on the horizontal displacement than on the settlement. The top beam elevation should not be decreased when roads, pipelines and structures are near to the deep pit, and the effective measures must be taken to restrain the displacement of soil when the top beam elevation is decreased. © 2018, Editorial Office of Chinese Journal of Geotechnical Engineering. All right reserved.
关键词	Computer simulation Foundations Geotechnical engineering Settlement of structures Soils Deep pit Displacement Finite element simulations Horizontal displacements Influence analysis Large displacements Supporting structure Top beam elevation
DOI	10.11779/CJGE2018S1033
收录类别	EI
语种	中文
出版者	Chinese Society of Civil Engineering
EI入藏号	20190306385425
EI主题词	Piles
EI分类号	408.2 Structural Members and Shapes - 409 Civil Engineering, General - 481 Geology and Geophysics - 483.1 Soils and Soil Mechanics - 483.2 Foundations - 723.5 Computer Applications
来源库	Compendex
分类代码	408.2 Structural Members and Shapes - 409 Civil Engineering, General - 481 Geology and Geophysics - 483.1 Soils and Soil Mechanics - 483.2 Foundations - 723.5 Computer Applications
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/114455
专题	土木工程学院
作者单位	1.Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education, Southeast University, Nanjing; 210096, China; 2.Department of Civil Engineering, Southeast University, Nanjing; 210096, China; 3.Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou; 730050, China; 4.Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Wang, Zheng-Zhen,Gong, Wei-Ming,Dai, Guo-Liang,et al. Influence analysis of top beam elevation on surroundings around deep pits[J]. Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering,2018,40:205-211 and 64.
APA	Wang, Zheng-Zhen,Gong, Wei-Ming,Dai, Guo-Liang,Zhou, Yong,&Xu, Feng.(2018).Influence analysis of top beam elevation on surroundings around deep pits.Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering,40,205-211 and 64.
MLA	Wang, Zheng-Zhen,et al."Influence analysis of top beam elevation on surroundings around deep pits".Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering 40(2018):205-211 and 64.