摘要
用梁、板跨越法处理岩溶塌陷地基时 ,塌陷体的极限承载力及其抗剪强度 ,对周围地基的极限承载力起关键作用。利用极限平衡理论 ,推导了地基土的极限承载力计算公式。塌陷体内摩擦角的增加 ,将会提高用梁跨越时的地基土极限承载力 。
When the collapsed ground is treated with beams or plate spanning in karst region,the ultimate bearing capacity and shear strength of collapsed soil play a key role on the ultimate bearing capacity of ground.Based on limit equilibrium theory the calculation formula for ground ultimate capacity has been deduced.With the increasing of internal friction angle of collapsed soil,the ground ultimate bearing capacity will be increased when ground is treated with beam spanning,and the ground ultimate bearing capacity will be slightly increased when the ground is treated with plate spanning.
出处
《工程勘察》
CSCD
北大核心
2004年第4期19-20,46,共3页
Geotechnical Investigation & Surveying
关键词
粱板跨越
岩溶塌陷
极限承栽力
beam or plate spanning
karst collapse
ultimate bearing capacity
