In order to research the mechanical performance of embedded anchor under different hoisting angles,and give the angle coefficient of the ultimate bearing capacity of embedded anchor under different hoisting angles relative to the vertical hoisting,so as to ensure the safe construction of the hoisting project.Carry out stress tests on 3 different embedded anchor at 4 hoisting angles,observe the failure mode of embedded anchor,analyze the load-displacement curve,fit the test results with the elliptic equation curve of tension shear action in the current specification,and simulate the test through finite element analysis.The ultimate bearing capacity of embedded anchor increases with the increase of hoisting angle.When the burial depth is large,the ultimate bearing capacity of embedded anchor is mainly affected by the transverse cracking of concrete caused by shear.When the hoisting angle is 45°,60° and 75°,the angle coefficients are 2.60,2.03 and 1.47 respectively.The results show that increasing the hoisting angle can improve the ultimate bearing capacity of embedded anchor.In the hoisting projects,vertical lifting shall be adopted.If other angles are adopted,the corresponding safety angle coefficient shall be considered.
关键词
吊装角度/预埋吊件/承载力/角度系数/有限元
Key words
hoisting angle/embedded anchor/bearing capacity/angle coefficient/finite element method
维普
万方数据