摘要
通过9片混凝土夹芯复合板的拟静力试验,对一种混凝土夹芯复合板在低周反复荷载下的抗震性能进行了研究,研究了高宽比、竖向压应力对墙板抗震性能的影响。结果表明:通过设置适当的连接件,能够保证混凝土夹芯复合板两侧混凝土面层整体工作,该种墙板具有良好的抗震性能;混凝土夹芯复合板具有较高的抗剪承载力,在水平荷载作用下最终发生正截面受压破坏,未产生剪切破坏;由于钢筋网强度较高,试件破坏时钢筋强度未得到充分发挥;墙板内的钢筋网对墙板的抗震性能具有重要影响,钢筋网应为完整的网片,不能由两片点焊拼接而成;混凝土夹芯复合板的延性与高宽比及竖向压应力有关,高宽比及竖向压应力越大,延性越好;墙板的水平抗侧承载力由正截面弯曲受压决定,其承载力可参照钢筋混凝土剪力墙计算,但计算时考虑到钢筋强度不能充分发挥作用,应将钢筋的强度乘以0.55的利用系数。
Based on the quasi-static test of nine concrete sandwich composite panels,the seismic performance of a kind of concrete sandwich composite panel under low cyclic loading was studied.The influence of height width ratio and vertical compressive stress on the seismic performance of the wall panel was studied.The results show that the concrete surface layer on both sides of the concrete sandwich composite panel can be ensured to work as a whole by setting appropriate connectors,and the wall panel has good seismic performance.Concrete sandwich composite plate has high shear capacity,under the action of horizontal load,the normal section compression failure occurs,but no shear failure occurs.Due to the high strength of the steel wire mesh,the strength of the steel bar is not fully used when the specimen is damaged.The steel mesh in the wall panel has an important impact on the seismic performance of the wall panel,and the steel mesh should be a complete mesh,and can not be made by two pieces of spot welding.The ductility of concrete sandwich composite slabs is related to the ratio of height to width and vertical compressive stress.The ductility is better when the ratio of height to width and vertical compressive stress are larger.The horizontal lateral bearing capacity of the wall panel is determined by the bending and compression of the normal section,and its bearing capacity can be calculated with reference to the reinforced concrete shear wall.However,considering that the strength of the steel bar can not play a full role in the calculation,the strength of the reinforcement should be multiplied by the utilization factor of 0.55.
作者
赵考重
刘梦璇
黄良朋
ZHAO Kaozhong;LIU Mengxuan;HUANG Liangpeng(School of Civil Engineering,Shandong Jianzhu University,Jinan 250101,China;Shandong Provincial Key Laboratory of Appraisal and Retrofitting in Building Structures,Jinan 250101,China)
出处
《建筑结构》
北大核心
2023年第5期47-52,共6页
Building Structure
关键词
混凝土夹芯复合板
拟静力试验
抗震性能
延性
刚度
concrete sandwich composite plate
quasi-static test
seismic performance
ductility
rigidity
作者简介
第一作者:赵考重,硕士,教授,硕士生导师,主要从事工程结构防灾减灾研究,Email:13705319335@163.com。
