钢框架抗侧力体系连接性能研究-结构工程专业论文.docxVIP

武汉理工大学硕士学位论文Abstract 武汉理工大学硕士学位论文 Abstract Many achievements have made in the research and application of structural steel since almost one hundred years ago．Structural steel has been widely used in the residential building abroad for many years，but it just begins to be adopted in the residential building domestic since recent years．Technically,steel residential building system must accord with the characteristics of residential building and the development of residential industrialization．There are still many problems remain to be solved in these aspects，such as behavior research on the lateral resistant of steel fxalrle and connection etc．In this paper three 1：2-scale steel frame specimens and eight full．scale steel frame connection specimens are tested on their behavior under cycle loading．There are six aspects as below on the problems of steel resident building researched： 1 Pseudo·static force testing of eight full-scale connections，including top·seat angle connections，two web flange and top·seat connections and dog·bone connections are carried out for the fLrst time in our country．The relfitions of M—Or，initial stiffness，the yield strength，failure models，ultimate strength， seismic behaviors and characteristic of dissipation of energy were gained in this test． 2 The Dog-bone moment connections are considered having excellent performance for seismic resistance in steel frame and can avoid the brittle failure happening to the connections effectively．TIlis paper describes experimental studies and finite element analysis that examined the hysteresis characteristics of dog-bone connection and steel frame．It is proved that the connection and steel frame with beam flange dog—bone reduced have superior behavior to the frame of conventional design and the brittle failure iS avoided in the steel frame．and conditions of stress development in the dog．bone，and the reason of the brittle failure in the rigid con rlections is obtained．It is emphasized that the weld quality of