摘要
软土地基上的深基坑支护结构都采用多支撑形式,本文采用土体弹簧系数K=Cz^1/2(即通常称之为“C”法),并考虑分步开挖逐层支撑的施工过程对支撑力、桩身内力及位移的影响,推导了以挠曲线方程为基础的计算方法,是继“m”法之后的又一发展.该法便于计算,对于少于三道支撑的情况,用手算也很方便,对于更多支撑的情况则可采用电算.“C”法比“m”系数法更适合于软土地基,计算结果与实测位移曲线很吻合.
Multi-Braced retaining structures have been widly employed in deep excavation. A calculating method using spring factor of K = C is presented in this paper, having taken into account the effect of staged excavation upon the bracing force, and the internal force and displacement of retaining wall. This is a development following 'm' method. For soft soil, the results calculated from 'C' method are consistent with the measured value better than that form 'm' method.
出处
《建筑结构》
CSCD
北大核心
1996年第7期15-21,共7页
Building Structure
关键词
深基坑
支挡结构
开挖
多支撑
弹簧地基
retaining structure
multistorey bracing
staged excavation
'C' method
