预制混凝土双板剪力墙的耗能能力

为系统研究预制混凝土双板(DWPC)剪力墙的耗能能力,并为制定地方技术规程和试点工程应用提供科学依据,对3类不同边缘构造、不同剪跨比的6个预制装配式DWPC剪力墙和3个现浇剪力墙的足尺比例试件在低周反复荷载下进行了对比试验研究,对比分析了3类试件的滞回特性和耗能能力,并比较了各试件的等效粘滞阻尼系数.结果表明,DWPC剪力墙的滞回特性和耗能能力与现浇剪力墙接近,具有较强的耗能能力,抗震性能较好.研究为DWPC剪力墙结构体系的抗震设计以及进行更深入的研究提供了基础资料.

Energy Dissipation of Double-wall Precast Concrete Shear Walls

To study the energy dissipation capacities of double-wall precast concrete (DWPC) shear wall and to provide reliable scientific basis for the local standards, three kinds of full scale specimens of different boundary element details and shear span ratio were tested and compared under low-cyclic reversed loading, including six DWPC shear walls and three normal cast-in-situ shear walls.First, hysteretic behaviors and energy dissipation capacity of all specimens were analyzed synthetically.Then, equivalent viscous damping coefficients were calculated and compared.The result shows that the hysteretic behaviors and energy dissipation capacities of DWPC shear walls are close to those of cast-in-situ shear walls.It also shows that the DWPC shear walls have remarkable energy dissipation capacity as well as high seismic performance.The study contributes to the seismic design and in-depth study for DWPC shear wall structure.