Abstract: In order to study the influence of different fullness on the connection performance of sleeve grouting joint under earthquake action, four grades of grouting fullness of half thread end grouted splicing specimens were designed for reversal loading. The results show that with the decrease of grouting fullness, under reversal load, the failure mode of specimens transform from the steel bar fracture to the grouting end pull-out, and the tensile strength will decrease. Under reversal load, the reduction of grouting fullness leads to increasing the residual deformation and reducing the tangential tensile stiffness of the specimens which is harmful to control of the cracks in concrete structure and increases the degree of damage in the joint areas after the earthquake. For the specimens subjected to high stress reversal load, the capacity of energy consumption increases slightly due to the decrease of grouting fullness and the increase of the slip; for the specimens subjected to large strain reversal load, the capacity of energy consumption reaches the limit in advance due to the decrease of grouting fullness, which reduces the safety redundancy of the splicing. It is verified by the experiment that the construction defects weaken the connection performance of the half thread end grouted splicing and danger to the safety of the joint under earthquake.
毛诗洋, 孙彬, 欧阳志鹏, 王霓, 张仁瑜. 反复拉压荷载下不同饱满度对半灌浆接头连接性能影响的试验研究[J]. 材料导报, 2021, 35(4): 4105-4111.
MAO Shiyang, SUN Bin, OUYANG Zhipeng, WANG Ni, ZHANG Renyu. Experimental Study on Effect of Different Grouting Fullness on Connection Performance of Half Thread End Grouted Splicing Under Reversal Load. Materials Reports, 2021, 35(4): 4105-4111.
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2021, Vol. 35 
