考虑RC楼板影响的钢板-混凝土组合连梁抗震性能试验研究  

Experimental study on seismic behavior of plate-reinforced composite coupling beams considering effect of RC slabs

作　　者：田建勃 王游春[1,2] 任文更 李哲 史庆轩[3] TIAN Jianbo;WANG Youchun;REN Wengeng;LI Zhe;SHI Qingxuan(State Key Laboratory of Eco-hydraulics in Northwest Arid Region,Xi’an University of Technology,Xi’an 710048,China;School of Civil Engineering and Architecture,Xi’an University of Technology,Xi’an 710048,China;School of Civil Engineering,Xi’an University of Architecture&Technology,Xi’an 710055,China)

机构地区：[1]西安理工大学省部共建西北旱区生态水利国家重点实验室,陕西西安710048 [2]西安理工大学土木建筑工程学院,陕西西安710048 [3]西安建筑科技大学土木工程学院,陕西西安710055

出　　处：《建筑结构学报》2021年第6期94-107,共14页Journal of Building Structures

基　　金：国家自然科学基金项目(51608441,51878540);中国博士后科学基金面上项目(2017M613174);陕西省高校科协青年人才托举计划项目(20170513)。

摘　　要：为研究地震作用下考虑RC楼板影响的钢板-混凝土组合(PRC)连梁受力性能和破坏机理,进行了4个带RC楼板的钢板-混凝土组合连梁和1个不带楼板的钢板-混凝土组合连梁的低周反复荷载试验,研究跨高比、钢板配板率以及楼板型式等因素对PRC连梁抗震性能的影响,分析带RC楼板连梁的破坏过程、破坏形态、承载能力、变形能力和耗能能力等,并考察楼板的损伤情况。结果表明:随着跨高比的增大,带RC楼板连梁的承载力明显降低,但延性更好;随着配板率的降低,带RC楼板连梁的承载力随之降低;钢板的受压波形屈曲变形主要发生在上下梁墙交界处,钢板和楼板的设置能显著增大连梁的受剪承载力及耗能能力;RC楼板设置半通缝会明显延缓连梁的开裂,半通缝的设置并不对连梁的承载力造成很大影响,但可以减小楼板在加载前期的损伤。To investigate the mechanical properties and failure mechanism of plate-reinforced composite(PRC) coupling beams considering the effect of reinforced concrete(RC) slabs under earthquake action, four PRC coupling beams with RC slabs and one PRC coupling beam were tested under low cyclic loading. The influences of span-to-depth ratio, steel plate ratio and type of slab on seismic behaviors of specimens were investigated. The failure process, failure modes, bearing capacity, deformation capacity and energy dissipation, as well as the associated slab damages were studied. The results indicate that with the increase of span-to-depth ratio, the bearing capacity of PRC coupling beam with RC slab is significantly reduced, but the ductility is better. With the decrease of steel plate ratio, the peak load of PRC coupling beam with RC slab is reduced. The compressive local buckling of steel plate mainly occurs at the upper and lower beam-wall junction. The shear bearing capacity and energy dissipation of PRC coupling beam increase significantly with steel plate and slab setting. The setting of semi-through-joint in RC slab can obviously delay the crack displacement of coupling beam. The setting of semi-through-joint has a slight impact on the bearing capacity of coupling beam, but it can reduce the damage of slab in the early stage of loading.

关 键 词：钢板-混凝土组合连梁 RC楼板 半通缝 拟静力试验 抗震性能 

分 类 号：TU398.2[建筑科学—结构工程]