SRC偏心受拉构件抗震性能试验研究  

Experimental study on seismic performance of SRC eccentric tension members

作　　者：张鹏[1] 桂金洋 邓宇[1] 覃宣盛 花东升 Zhang Peng;Gui Jin-yang;Deng Yu;Qin Xuan-sheng;Hua Dong-sheng(College of Civil Engineering and Architecture,Guangxi University of Science and Technology,Liuzhou 545006,China)

机构地区：[1]广西科技大学土木建筑工程学院,广西柳州545006

出　　处：《工程抗震与加固改造》2021年第1期69-75,共7页Earthquake Resistant Engineering and Retrofitting

基　　金：国家自然科学基金资助项目(51768008);中国博士后科学基金项目(2017M613273XB);广西自然科学基金项目(2019JJA160137)。

摘　　要：为探究型钢混凝土(SRC)受拉构件抗震及变形性能,对7根SRC构件进行了低周反复荷载试验,研究剪跨比和偏心距对其滞回及骨架曲线的影响,并提出SRC受拉构件的变形性能评价指标。结果表明:SRC受拉构件均发生弯曲破坏,其滞回和耗能性能良好,以延性和不同阶段的位移角作为变形性能评价指标,构件的变形性能较为理想,其中剪跨比和偏心距对侧向变形的影响主要体现在极限位移角,其值与剪跨比成反比,与偏心距成正比。总体来说,SRC受拉构件的抗震及变形性能可较好满足抗震要求。In order to explore the seismic and deformation performance of steel reinforced concrete( SRC) eccentric tension members,a total of seven SRC members under low cyclic loading are carried out to study the effects of shear-span ratio and eccentricity on hysteresis curves and skeleton curves,and an evaluation index for the deformation performance of SRC tension members is proposed.The results show that: all SRC tension members under eccentric load suffer from bending failure,and their hysteresis and energy dissipation performance are perfect. The ductility and displacement angles at different stages used as evaluation indicators of deformation performance,and the deformation capacity of the members is ideal. The influence on the lateral deformation is mainly reflected in the limit displacement angle,and the value of which is inversely proportional to the shear span ratio and proportional to the eccentricity.Generally speaking,the seismic and deformation performance of SRC members under tensile load is greatly meets the seismic requirements.

关 键 词：SRC偏心受拉构件 轴拉比 抗震性能 变形能力 延性 位移角 

分 类 号：TU398.1[建筑科学—结构工程]