基于改进载荷试验的泥岩地基承载力研究
摘要:改进了岩基平板载荷试验,模拟边载对泥岩承载力的影响,并在成都市天府新区某工程场地上进行了4个试验点的现场中等风化泥岩岩基平板载荷试验,得出了各自相对应的p-s曲线。试验表明:①在施加200 kPa边载的条件下,泥岩的承载力较无边载时的承载力有了0.7~0.9倍的提升,泥岩有进行深度修正的必要并尝试得出适合的深度修正系数。②结合室内岩石单轴抗压强度试验的结果,根据规范方法反算折减系数相较规范的建议的折减系数值,规范的建议值偏保守,在确定成都泥岩地基承载力采用室内单轴抗压强度试验时,折减系数可适当提高。
Abstract:In order to simulate the effect of edge loads on the bearing capacity of mudstone,improved rock plate loading test and carried out four pilot sites weathered mudstone rock loading test on a project site in Chengdu Tianfu new area and obtain the corresponding p-s curves.Experiments show that:①Under the condition of applying 200 kPa edge loads,the bearing capacity of mudstone has the 0.7 to 0.9 times increase compare with applying no edge loads,there needs to have the modification of depth for mudstone.Also try to get an appropriate depth modified coefficient in this paper.②Combining the rock loading test results with the results of indoor rock uniaxial compressive strength test,to do inverse computation of reduction factor according to the standard method which draw the conclusion that the value of the standard proposal is conservative.When the bearing capacity of mudstone in Chengdu is determined by the uniaxial compressive strength test,the value of reduction factor could be improved appropriately.
中文标题：
基于改进载荷试验的泥岩地基承载力研究
Research on Bearing Capacity of Mudstone Foundation Based on the Improved Rock Loading Test
作者：
凌潇1,罗康2,张莲花3
Ling Xiao1,Luo Kang2,Zhang Lianhua3
作者简介:凌潇,男,1991年生,汉族,四川成都人,硕士,主要从事岩土、道路工程方面的工作。E-mail:605468491@qq.com
通讯地址：
1. 成都市建筑设计研究院, 四川成都 610015; 2. 成都市建工科学研究院, 四川成都 610059; 3. 成都理工大学, 四川成都 610059
1.ChengduArchitecturalDesignResearchInstitute,ChengduUniversityofTechnology,Chengdu610015,Sichuan,China; 2.TheChengduJianGongScienceInstitute,Chengdu610059,Sichuan,China; 3.CollegeofEnvironmentalandCivilEngineering,ChengduUniversityofTechnology,Chengdu610059,Sichuan,China
中图分类号:TU413.4
doi:10.3969/j.issn.1007-2993.2017.01.001
出版物：岩土工程技术
收稿日期:2016-09-22
网络出版日期:2021-07-06
关键词:改进岩基载荷试验,泥岩地基承载力,深度修正,折减系数
Key words:improved rock loading test,bearing capacity of mudstone,depth modification,reduction factor
文档包含图片数量：图片(0)张
文档包含表格数量：表格(0)个
参考文献：
基金项目：
- 文件大小:
- 1.6 MB
- 下载次数:
- 60
-
高速下载
|
|
