| 基于叠梁试验的土工格室垫层刚度确定方法研究 |
| |
| 引用本文： | 杨明辉,邓岳保,赵明华.基于叠梁试验的土工格室垫层刚度确定方法研究[J].土木工程学报,2011(11):87-92. |
| |
| 作者姓名： | 杨明辉 邓岳保 赵明华 |
| |
| 作者单位： | 湖南大学岩土工程研究所;浙江大学; |
| |
| 基金项目： | 国家自然科学基金(50708033); 湖南省自然科学基金(07JJ5116) |
| |
| 摘 要： | 将土工格室垫层与梁板视为叠梁体系,引入叠梁计算理论,提出土工格室垫层刚度确定新方法。首先,基于平截面假定,并考虑叠梁层间摩擦力与荷载影响,分析叠梁中间层弹性模量与叠梁跨中挠度、1/4跨挠度及荷载的对应关系,由此建立土工格室垫层刚度的关系表达式。然后,通过自行设计的叠梁加载试验对该方法进行验证,计算值与测试值对比显示该计算方法误差小于5%。最后,对土工格室垫层叠梁体系进行多组对比试验,对其作用机理与刚度基本规律进行分析。试验结果表明:土工格室垫层刚度与土工格室规格、填料类别及填料密实度密切相关,工程中常用的碎石土工格室弹性模量取值范围在50～70MPa,土体土工格室弹性模量取值在40～65MPa之间。
|
| 关 键 词： | 土工格室垫层 刚度 弹性模量 叠梁理论 加载试验 |
Study of stiffness test method of geocell cushion based on superposed beam theory |
| |
| Yang Minghui Deng Yuebao, Zhao Minghua.Study of stiffness test method of geocell cushion based on superposed beam theory[J].China Civil Engineering Journal,2011(11):87-92. |
| |
| Authors: | Yang Minghui Deng Yuebao Zhao Minghua |
| |
| Affiliation: | Yang Minghui1 Deng Yuebao1,2 Zhao Minghua1(1.Institute of Geotechnical Engineering,Hunan University,Changsha 410082,China,2.Zhejiang University,Hangzhou 310058,China) |
| |
| Abstract: | A new method to test the stiffness of the geocell cushion is proposed based on the superposed beam calculation theory.According to the plane section assumption,the relationship between the elastic modulus of the interlayer and the deformation of midspan deformation,quarter span was analyzed,considering the influence of friction force between layers,and the equation is established and verified by the superposed beam loading test with the error below 5%.A large number of geocell cushion superposed beam loadin... |
| |
| Keywords: | geocell cushion stiffness elastic modulus theory of superposed beam loading test |
| 本文献已被 CNKI 等数据库收录！ |
|
