CAJ | 학술논문

对铅芯橡胶支座进行了压、剪力学性能试验，研究了不同水平位移加载顺序和加载频率对支座力学性能的影响。结果表明：水平位移递增加载时支座的屈服力、屈服后刚度、水平等效刚度和等效阻尼比均大于递减加载时支座的性能，随着支座剪切变形的增大，加载顺序对支座屈服后刚度和水平等效刚度的影响逐渐减小；水平位移加载频率较小时，加载频率对支座力学性能有一定的影响，随着加载频率的增大，加载频率对支座力学性能的影响逐渐减小。
대연심상효지좌진행료압、전역학성능시험，연구료불동수평위이가재순서화가재빈솔대지좌역학성능적영향。결과표명：수평위이체증가재시지좌적굴복력、굴복후강도、수평등효강도화등효조니비균대우체감가재시지좌적성능，수착지좌전절변형적증대，가재순서대지좌굴복후강도화수평등효강도적영향축점감소；수평위이가재빈솔교소시，가재빈솔대지좌역학성능유일정적영향，수착가재빈솔적증대，가재빈솔대지좌역학성능적영향축점감소。
The compressive-shear tests of the lead-centered rubber bearings were carried out, the inf luence of the loading sequence and loading frequency on the mechanical performance of the bearings was studied.The results show that when the lateral displacement of the bearing is increased,the yield force,post-yield stiffness,horizontal equivalent stiffness and equivalent damping ratio are greater than those when the lateral displacement is inclined.As the shear deformation of the bearing increases,the loading sequence has little effect on the post-yield stiffness and horizontal equivalent stiffness.When the lateral displacement loading frequency is at low level,the loading frequency affects the mechanical performance of the bearing to some extent.As the loading frequency increases,the loading frequency has little effect on the mechanical performance of the bearing.