Experimental research on seismic-damaged SRC frame strengthened by enveloped steel

被引：0

作者：

Xu Q. ^{[1
]}

Zeng L. ^{[2
]}

Xu C. ^{[3
]}

机构：

[1] Wuhan Building Material Industry Design & Research Institute Co., Ltd, Wuhan

[2] School of Urban Construction, Yangtze University, Jingzhou

[3] School of Urban Construction, Wuhan University of Science and Technology, Wuhan

来源：

Jianzhu Jiegou Xuebao/Journal of Building Structures | 2019年 / 40卷

关键词：

Pseudo-static testing; Seismic behavior; Seismic damage; SRC frame structure; Steel-enveloped strengthening;

D O I：

10.14006/j.jzjgxb.2019.S1.002

中图分类号：

学科分类号：

摘要：

In order to study the seismic behavior of seismic-damaged frames consisting steel reinforced concrete (SRC)columns and SRC beams strengthened by enveloped steel, four 1:3 scaled two-bay and three-story SRC frame models were designed and manufactured. The destruction tests of the models under lateral cyclic loading were carried out. The test results show that the failure modes of seismic-damaged specimens strengthened by enveloped steel are the beam-hinged failure mechanism under lateral cyclic loading, but concrete in the joints is crushed seriously, so the steel distribution of the joints should be improved in seismic retrofit design. Compared with the prototype control specimen, the ultimate loading and the failure displacement of the moderately damaged specimen after retrofit are increased by 14.64% and 19.24% respectively, while the ultimate loading and the failure displacement of the severely damaged specimen after retrofit are increased by 10.19% and 18.92%. The study indicates that the rehabilitated frames can reach or even exceed the level of their original seismic performances before seismic damage under the severely damaged level. © 2019, Editorial Office of Journal of Building Structures. All right reserved.

引用

页码：11 / 17

页数：6

共 17 条

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