摘要
在基坑开挖工程中,当土层为饱和软粘土、淤泥质土和砂质粉土等软弱土层时,围护结构一般会采用三轴水泥搅拌桩和水泥土重力式挡墙等形式。由于不同工程类别不同施工区域需要的承载条件不同,因此需要对相应土层土体进行室内试验,为数值计算提供准确的计算参数。文中针对不同龄期不同水泥掺量的水泥土开展半圆弯曲试验,探索了水泥土断裂能、断裂韧度等指标随龄期和水泥掺量等因素的变化规律。
In the foundation pit excavation project, the retaining structure generally adopts forms of triaxial cement mixing pile and gravity retaining wall when the ground is saturated soft clay, silty soil and sandy silt. Due to the bearing conditions required in construction areas varies with engineering categories, it is necessary to carry out indoor tests on the corresponding soil layers to provide accurate calculation parameters for numerical calculation. In this paper, semi-circular bending tests were carried out on cement stabilized soils with different cement content at different curing ages. The variation of fracture energy, fracture toughness and other indicators of cement stabilized soil with cement age and content was explored.
作者
余静
王金昌
YU Jing;WANG Jinchang(Institute of Transportation Engineering Zhejiang University,Hangzhou 310058,China)
出处
《低温建筑技术》
2019年第2期78-81,共4页
Low Temperature Architecture Technology
关键词
半圆弯曲试验
龄期
断裂能
断裂韧度
semi-circular bending test
curing age
fracture energy
fracture toughness
