天然橡胶材料压剪试验分析  

Analysis of Compression Shear Test of Natural Rubber Materials

作　　者：黄山 戴纳新 付聪 郑国堔 Huang Shan;Dai Naxin;Fu Cong;Zheng Guoshen

机构地区：[1]南华大学土木工程学院,湖南衡阳421001 [2]南华大学长三角(诸暨)研究院,浙江绍兴311800 [3]福建江夏学院工程学院,福建福州350108

出　　处：《重庆建筑》2022年第12期36-38,共3页Chongqing Architecture

摘　　要：为研究叠层橡胶支座中天然橡胶的力学性能,在对简单剪切实验进行改进的基础上,提出了一种新颖的压剪实验方法,更合理地模拟叠层橡胶支座橡胶层的受力。使用高强螺栓为橡胶板提供竖向压力,分析竖向压应力对天然橡胶剪切模量、最大变形及扯断应力的影响。结果表明:随着正向压应力的增加,橡胶板的耗能能力增强,且最大剪力值不断增大,剪切模量逐渐增加;随着剪应变的增加,剪切模量逐渐降低,压应力对橡胶板的影响逐渐减小;橡胶板的极限抗剪强度随压应力增加而提高,但极限变形能力下降。In order to study the mechanical properties of natural rubber in the laminated rubber support,based on the simple shear test,a novel compression shear test is designed to more reasonably simulate the force of the rubber layer of the laminated rubber support.High strength bolts are used to provide vertical pressure for the rubber plate,and the effects of vertical compressive stress on shear modulus,maximum deformation and tensile stress of natural rubber are analyzed.The results show that with the increase of forward compressive stress,the energy dissipation capacity of the rubber plate increases,the maximum shear value increases,and the shear modulus increases gradually;With the increase of shear strain,the shear modulus declines gradually,and the influence of compressive stress on the rubber plate decreases steadily.The ultimate shear strength of the rubber plate rises with the increase of compressive stress,but the ultimate deformation capacity is weakened.

关 键 词：天然橡胶 压剪试验 扯断试验 

分 类 号：TU352.1[建筑科学—结构工程]