火电厂主厂房SRC柱-RC分散剪力墙框排架混合结构抗震性能研究  

Study on Seismic Behavior of the Frame-Bent Hybrid Structure of SRC Columns-RC Shear Walls forthe Main Building of Thermal Power Plants

作　　者：刘志钦[1,2] 白国良[1] 李红星[3] 赵春莲[3] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]河南城建学院土木与材料工程系,河南平顶山467036 [3]西北电力设计院,西安710032

出　　处：《建筑科学》2013年第1期41-46,51,共7页Building Science

摘　　要：火电厂主厂房因承载的设备种类繁多,运行参数复杂,使其质量、刚度在空间和平面上分布不均匀,导致结构体系的抗震性能较差。以8度区II类场地,单机容量1000MW机组的主厂房为研究对象,提出SRC柱-RC分散剪力墙框排架混合结构,对荷重较大的三榀子结构按1/7缩尺设计制作的模型结构,进行抗震性能试验研究,得到不同加速度峰值地震波作用下结构的荷载和位移反应,SRC柱、RC分散剪力墙的协同受力及多道抗震防线的形成规律等,并对结构在8度地震作用下的动力弹塑性分析进行对比,其结果表明该结构体系满足8度小震不坏、大震不倒的抗震设防要求,具有良好的变形性能,SRC柱与RC分散剪力墙有较好的协同工作性能,设置的RC剪力墙完美起到了第一道抗震防线作用,说明SRC柱-RC分散剪力墙框排架混合结构主厂房宜于在高烈度区大容量机组主厂房中推广应用。As the structure of main building has many types of electric equipment, running complex parameters, with the structure system so uneven distribution of mass and stiffness has poor seismic behavior. Taking the main building with unit capacity 1000MW and at 8 degree intensity site II as research object, SCR column and RC dispersed shear wall frame-bent hybrid structural system is put forward. Three Substructures are selected and the model according to 1/7 reduced scale design is made, study to the seismic behavior. The load and displacement in different seismic waves, the coordinated working of SCR column and RC dispersed shear wall, the formation rule of multiple aseismic lines are obtained. Furthermore, the testing results are compared with the dynamic elastic-plastic analyses of model in 8 degree earthquake. The results show that the structural system can meet the needs of design in zone with the seismic fortification intensity 8, SRC frame and RC shear wall have better deformation performance and better coordinated working performance, and RC shear wall has played the first seismic fortification line, SCR column and RC disperse shear wall hybrid structural system can be used in the main building of large capacity unit at high earthquake intensity regions.

关 键 词：主厂房 SRC柱-RC分散剪力墙 框排架 抗震性能 

分 类 号：TU398[建筑科学—结构工程]