直接基于位移的后张无粘结预应力装配式联肢剪力墙抗震设计

Seismic Design of Unbonded Post-tensioned Hybrid Coupled Wall Using Direct Displacement-Based Method

介绍了PRESSS(PREcast Seismic Structral Systems)研究计划中不同于传统的现浇混凝土湿性连接的干性连接方式,并利用其中的后张无阻尼方式提出了一种新型后张无粘结预应力装配式联肢剪力墙。新型剪力墙中因采用了干性连接,具备了自恢复能力,使最终的残余变形很小。介绍了多自由度非线性系统直接基于位移的抗震设计方法(DDB)的分析流程,并提出基于DDB法的后张无粘结预应力装配式联肢剪力墙抗震设计方法。

＂Dry＂ connection investigated by PRESSS （PREcast Seismic Structral Systems） program is introduced, which is different from ＂Wet＂ connection used by cast in situ concrete, and a new type of unbonded post-tensioned hybrid coupled wall is proposed using the concept of post-tensioned without damping in ＂Dry＂ connections. The new type of hybrid coupled wall is possessed of the ability of self recovery by using the ＂Dry＂ connection, i.e., the residual deformation is little. The flowchart of MDOF for Direct Displacement-Based （DDB） method is prosented and seismic design method of unbonded post-tensioned hybrid coupled shear wall using DDB method is put forward.