溢洪道基础用胶凝砂砾石材料力学性能试验研究  

Experimental Research on the Mechanical Properties of Gravel Cementitious Material of Spillway Foundations

作　　者：刘录录 何建新[1] 杨海华[1] 

机构地区：[1]新疆农业大学水利与土木工程学院,乌鲁木齐830052 [2]新疆水利水电勘测设计研究院,乌鲁木齐830091

出　　处：《中国农村水利水电》2014年第12期130-133,共4页China Rural Water and Hydropower

基　　金：新疆水利水电工程重点学科基金(XJZDXK20091206)

摘　　要：在溢洪道基础用胶凝砂砾石(CSG)材料配合比优选的基础上,通过泊松比、圆柱体轴心抗压强度、静力抗压弹性模量、渗透及静三轴试验进一步研究了材料的力学性能。试验结果表明:CSG材料的泊松比为0.21,抗压弹性模量小于混凝土材料的抗压弹性模量;孔隙率较大,具有中等渗透性,有一定自由排水能力;CSG材料的应力-应变关系存在明显的线性、非线性和软化三个阶段,体应变呈现先剪缩后剪胀的塑性破坏特征,破坏角较大。研究结果为溢洪道基础强度、变形分析提供设计参数,也为CSG材料的应用和发展提供理论依据。On the basis of the cementitious sand and gravel（CSG）used in the spillway foundation mixture ratio selective preference,according to poisson＇s ratio,cylinder axial compressive strength,static compressive modulus of elasticity,permeability and static triaxial tests further study the mechanical properties of materials.The results show that：CSG materials poisson＇s ratio is 0.21,compressive elastic modulus of less than concrete compressive modulus of elasticity.Porosity is large,it has moderate permeability,and certain free drainage capacity.CSG material stress-strain relationship exists three phases：linear,nonlinear,and softening of body strain.Study results provide design parameters for the spillway foundation of strength and deformation analysis,but also provide a theoretical basis for the application and development of CSG material.

关 键 词：CSG材料 力学性能 静三轴 应力-应变关系 

分 类 号：TU528.041[建筑科学—建筑技术科学]