摘要
文中针对北京市建筑设计研究院有限公司提出的两种新型装配整体式剪力墙结构连接构造设计了两组墙片试验。试验墙片采用预制构件,并预埋连接件。装配时,墙片之间利用预埋件焊接连接,称为干式连接;上下层墙片之间采用现浇方式与楼板连接在一起,这种方法增强了墙体的整体性,可大幅度降低混凝土现场湿作业量。本文设计了两组墙片试验,第1组试验检验墙片竖缝位置干式连接方式的抗震性能;第2组试验体检验型钢边缘约束构件、型钢抗剪键和高强度灌浆料后浇带的连接性能。两组试验各建造两个试验体,第1组两个试验体相同,第2组两个试验体分别采用不同的轴压比。试验结果表明:干式连接方式可以充分传递截面上的剪力,使腹板墙和翼缘墙协调工作;采用型钢的约束边缘构件具有较好的延性,有效地延缓了墙片角部的破坏。
A novel assembled monolithic concrete wall structure is proposed in this paper, which is featured in dry connections and steel boundary elements. The wall is pre-fabricated in factories with embedded parts on each side of the wall. Steel angles and I-shaped steel are employed as the boundary elements and shear force transferring ele- ment, respectively. When being constructed, the walls are connected by welding the embedded steels, while con- crete shall be cast in site to construct the slab. This technique on the one hand improves the integrity of the struc- ture system, and on the other hand reduces the concrete-cast work significantly. Two groups of specimens are de- signed and tested in this study, each containing two specimens. In the first group, two specimens are tested repeat- edly to examine the seismic behavior of the dry connections, while the two specimens of the second group, each sustaining different axial force, are used to improve the effectiveness of steel boundary elements and the shear con- nector. The results demonstrate that the dry connection is sufficient to transferring shear forces between wall pieces amd makes the web wall and flange walls work together. And the steel boundary element makes the wall pieces have considerable ductility and delays the concrete crush at the feet of wall pieces.
出处
《地震工程与工程振动》
CSCD
北大核心
2012年第6期110-118,共9页
Earthquake Engineering and Engineering Dynamics
关键词
干式连接
型钢边缘约束构件
型钢抗剪键
预制构件
装配整体式剪力墙结构
dry connection
steel boundary elements
steel shear connector
pre-fabricated wall
assembled mono-lithic concrete wall structure
