摘要
通过系列不同含水量条件下黄土-砂浆接触面的直接剪切试验研究,获得了砂浆接触面剪切强度指标摩擦角、内聚力随含水量的定量变化关系,然后利用该结果对某实际黄土基坑土钉墙设计方案进行了不同含水量条件的校核,结果表明含水量增大对土钉墙整体稳定性存在削弱作用,使原有设计方案安全系数明显降低。
Based on a series of direct shear experiments of loess-sand mortar＇ s interface with different water content, the quantitative relationship between water content and interface ＇ s shear-resistance parameters such as friction angle and cohesion was obtained. Then, according to the test result, a stability checking computation of the design of a foundation ditch＇ s soil nailing wall in loess area was carried out. The computing results indicate that increasing water content leads to reduction of safety factor of soil nailing wall considerably.
出处
《地下空间与工程学报》
CSCD
北大核心
2010年第A02期1660-1664,共5页
Chinese Journal of Underground Space and Engineering
基金
国家自然科学基金项目(50974117)
深部岩土力学与地下工程国家重点实验室开放基金项目(SKLGDUE08006X)
关键词
黄土
含水量
砂浆
接触面
土钉墙
loess
water content
sand mortar
interface
soil nailing wall
