摘要
通过南昆线典型膨胀岩原位水平挤出法大剪试验结果和边坡溜坍及坍滑点反算结果的对比,提出膨胀土(岩)体抗剪强度参数的确定方法和选取原则:若边坡开挖后不及时封闭,选取湿化稳定强度参数C′;坡体内地下水位以下或坡面无封闭,有雨水、地表水渗入时,选取浸水后的强度参数CW,ΦW;若无雨水、地表水渗入,选取非浸水条件下的C,Φ;若有长大裂隙面时,采用裂隙面强度参数C′i,Φ′i。总结出膨胀土(岩)堑坡结构设计原则和路基边坡支挡措施。
The large shear test of squeezing the typical expansive rock out of the original location was carried out on Nanjing—Kunming line. The reversed calculation of the slope collapse and collapse and slide was made. The results of the two generate the determination method of the expansive soil or rock antishear intensity and the selection rationale: if the slope is cut without timely recovering the wet stability intensity C′ should be selected;if under the underground water level or the slope surface is not sealed and there is rain or surface water seeping into it, the intensity parameters of CW and ΦW are selected; if there is no rain or surface water seeping into it, the intensity parameters C and Φ are selected; if there is long and big crack, then Ciˊand Φiˊ are selected. The expansive soil or rock cutting slope structure design rationale and measures of retaining engineering are summarized.
出处
《中国铁道科学》
EI
CAS
CSCD
北大核心
2003年第4期111-114,共4页
China Railway Science
基金
铁道部科技开发计划项目(TY字第1307号)
关键词
膨胀土(岩)
边坡
防护工程
设计
施工
Expansive soil (rock)
Slope
Protection engineering
Design
Construction
