预制装配混凝土剪力墙结构新型装配技术试验研究

Experimental study on new assembly technology of precast concrete shear wall structure

对预制装配混凝土剪力墙结构的承载性能、抗震性能进行了试验研究。根据预应力筋截面面积不同,预拉力值不同共设计制作了8个装配混凝土剪力墙试件以及1个现浇模型试件。在试验室条件下进行低周水平反复荷载试验,研究了试件承载力性能、预应力筋的应力变换以及试件耗能能力等,得出以下几点结论:预应力预制装配试件承载能力高于现浇试件,预应力筋截面增大一倍可使试件模型峰值荷载增大约19%,屈服荷载增大约10%;增大预应力筋截面面积或增大预应力筋预拉力导致结构耗能能力降低。

The bearing capacity and seismic performance of precast concrete shear wall structure are studied experimentally.Eight specimens of assembled concrete shear wall and one cast-in-situ model specimens were designed and manufactured according to the different section area of prestressing tendons and different pre-tension values.The low-cycle horizontal repeated load experiment is carried out under laboratory conditions.The bearing capacity of specimens,the stress transformation of prestressing tendons and the energy dissipation capacity of specimens are studied through experiments.The following conclusions are drawn that the bearing capacity of pre-stressed precast assembly specimens is higher than that of cast-in-place specimens,and the model of specimens can be made by doubling the section of prestressing tendons.The peak load increases by about 19% and the yield load increases by about 10%.The energy dissipation capacity of the structure decreases with the increase of the section area of the prestressing tendons or the prestressing force of the prestressing tendons.