土剪切面的力学性能研究  

Mechanics Property Study Of Soil Cutting Section

作　　者：余红[1] 张尔齐[1] 

机构地区：[1]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090

出　　处：《林业科技情报》2004年第4期73-75,77,共4页Forestry Science and Technology Information

摘　　要：本文研究了土剪切面力学性能。对2种密度的砂和2种固结状态的粘土进行了直剪试验,测 得剪切面上剪应力与剪切位移的关系。由试验资料发现,剪切面上的剪切应力与剪切位移关系可分为逐渐硬 化和峰值后软化两种类型。对每种剪应力与剪切位移关系研究了变形和强度特性,给出了相应的数学模型, 确定了模型参数及其影响因素。根据本文给出的数学模型,可以确定出在给定剪切位移下剪切面发挥的抗剪 切应力。Mechanics property of soil cutting section is studied in this paper. Straight shear test is performed using two kinds of sand and solid clunch with different density and the relationship between cutting stress and displacement is measured. It is found that the relationship between cutting stress and displacement can be divided into two types of gradually hardening and softening alter peak value. Distortion and intension property of every type of relationship is studied and relevant math models are given in this paper. Model parameters and effect factors are also determined. Using the model given in this paper, cutting stress with given cutting displacement can be determined in given cutting section.

关 键 词：剪切位移 剪切面 剪应力 抗剪 直剪试验 固结状态 力学性能 模型参数 强度特性 发现 

分 类 号：TU432[建筑科学—岩土工程]