砂浆对砌体强度和变形能力的影响分析  

Impact of the mortar on masonry strength and deformability

作　　者：潘佳禾 马宏旺[1] 吴丹[2] 

机构地区：[1]上海交通大学船建学院土木系,上海200240 [2]上海交通大学船建学院力学系,上海200240

出　　处：《新型建筑材料》2014年第10期38-42,共5页New Building Materials

摘　　要：利用数值模拟试验方法研究了砌体中砂浆的厚度和材料属性对砌体强度和变形能力的影响。试验设置了9组不同厚度和峰值应变的砂浆试件进行数值模拟,采用规范中的标准试验方法测试砌体的抗压、抗剪强度和破坏位移。分析了砂浆变化对砌体强度和变形能力的影响。研究结果表明,提高砂浆峰值应变和增加砂浆厚度可以提高砌体的抗剪强度和破坏位移,但增加砂浆厚度会导致砌体抗压强度降低,而提高砂浆峰值应变不影响砌体抗压强度,所以提高砂浆峰值应变是可靠有效的方法。The impact of the changes in the mortar thickness and material properties on strength and deformability of mason-ry structures is studied by numerical simulation testing method. Nine groups of mortar specimens with different thickness and peakstrain were set in the test to be numerical simulated,using the standard test method for measuring compressive strength, shearstrength and damage displacement of masonry. The impact of changes of masonry mortar strength and deformation capacity is avail-able by comparing and analyzing the test results. The results show that increasing mortar peak strain and thickness improve theshear strength and destroying displacement of masonry,and the increase in the thickness of the mortar will result in the decreaseof masonry compression strength,while improving mortar peak strain does not affect the compressive strength of masonry, so im-proving mortar peak strain is reliable and effective.

关 键 词：砂浆 砌体 砂浆厚度 峰值应变 变形能力 

分 类 号：TU528.043[建筑科学—建筑技术科学]