新型带保温层单面叠合板式剪力墙抗震性能试验研究

Experimental study on seismic performance of new single faced superimposed slab shear wall with insulating layer

为了进一步提高叠合板式剪力墙结构的装配率,同时实现结构保温一体化,针对提出的新型单面叠合板式剪力墙带保温层的结构形式通过拟静力试验方法进行抗震性能研究,同时在其破坏形态、承载能力、滞回特性、刚度退化及耗能能力等方面与现浇混凝土剪力墙进行对比分析。试验研究结果表明:带保温层单面叠合板式剪力墙与现浇剪力墙相比,受力过程和破坏形态基本相同,试验中未出现叠合面分离、相对滑移等现象,裂缝同时贯穿预制受力墙板和腔内后浇混凝土层,且在整个试验过程中预制外叶板也未出现裂缝和脱落,试件各方面的抗震性能较好,在受力性能上接近于现浇混凝土剪力墙。

To further improve the assembly rate of superimposed slab shear wall structure and implement integrative insulation construction,the seismic performance of proposed new single faced superposed shear wall with insulation layer is studied by conducting pseudo static test.Simultaneously,it is compared with cast-in-place concrete shear wall in terms of failure mechanism,bearing capacity,hysteretic characteristics,stiffness degradation and energy dissipation capacity.The test and study results show that the single faced superposed shear wall with insulating layer is essentially equivalent to the cast-in-place shear wall in terms of bearing capacity and failure mechanism.There is no separation of superposed surface or relative slippage occurred during the experiment.The cracks run through both the prefabricated shear wall and post-cast concrete layer in the cavity,and no cracks or shedding is found in the prefabricated protection slab of insulating layer.The seismic performance of the specimen is good in every aspect,and its stress performance can be identical to that of cast-in-place concrete shear wall.