竖井地基真空度竖向传递时间效应固结解析解  

Analytical Solution of Consolidation of Vertical Transfer Time Effect of Vacuum Degree of Shaft Foumdation

作　　者：杨磊勇 李建中[1] 吴丹伟 YANG Leiyong;LI Jianzhong;WU Danwei(Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring Central South University of Ministry of Education,Changsha 410083,China;Liuzhou Steel Group,Liuzhou 545002,Guangxi,China)

机构地区：[1]中南大学有色金属成矿预测与地质环境监测教育部重点实验室,长沙410083 [2]广西柳州钢铁集团有限公司,广西柳州545002

出　　处：《路基工程》2022年第6期25-28,共4页Subgrade Engineering

摘　　要：基于经典的Hansbo和谢康和竖井固结理论,通过考虑真空度竖向传递效应,引入真空度传递时间t_(p),建立考虑土层竖直方向差异固结的平均固结度■表达式。当t_(p)趋于零时,■表达式与经典理论表达式Ur相同;t_(p)的增加会提高平均固结度■,且显著地提高固结前期的固结度,对于固结后期影响较小;当t_(p)从10天增至60天,比较达到20%固结度所需的时间发现,■相较Hansbo S和谢康和理论固结度分别减少12.50%~87.50%和22.22%~88.89%;t_(p)=30天时,■相较于Hansbo S和谢康和理论固结度分别提高0.33%~9.58%和0.91%~9.71%。Based on the classical theories of Hansbo and Xie Kanghe’s sand well shaft consolidation,by considering the vertical transfer effect of vacuum degree and introducing the transfer time t_(p)of vacuum degree the■formula of average consolidation degree considering the vertical differential consolidation of soil layer has been established.When the vacuum transfer time approaches 0,the expression of average consolidation degree■is the same as that of classical theory.The increase of t_(p),can increase the average degree of consolidation■and significantly increase the degree of consolidation in the early stage of consolidation,but has little effect on the later stage of consolidation;Compared with Hansbo S(1981)and Xie Kanghe(1989),■reduced by12.50%~87.50%and 22.22%~88.89%respectively;when t_(p)=30 days,■compared with Hansbo S(1981)and Xie Kanghe(1989)increased the theoretical consolidation degree by 0.33%~9.58%and 0.91%~9.71%respectively.

关 键 词：竖井地基 固结理论 解析解 真空度 竖向传递 时间效应 

分 类 号：TU470[建筑科学—结构工程]