[1]柳斌,张敬书,周家来.小跨高比强化配筋连梁的抗震性能[J].世界地震工程,2019,35(01):069-77.
 LIU Bin,ZHANG Jingshu,ZHOU Jialai.Seismic performance of small span-to-depth ratio coupling beam with strengthened reinforcement[J].,2019,35(01):069-77.
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小跨高比强化配筋连梁的抗震性能
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《世界地震工程》[ISSN:/CN:]

卷:
35
期数:
2019年01期
页码:
069-77
栏目:
出版日期:
2019-03-10

文章信息/Info

Title:
Seismic performance of small span-to-depth ratio coupling beam with strengthened reinforcement
作者:
柳斌12 张敬书12 周家来12
1. 兰州大学 西部灾害与环境力学教育部重点实验室, 兰州 730000;
2. 兰州大学 土木工程与力学学院, 兰州 730000
Author(s):
LIU Bin12 ZHANG Jingshu12 ZHOU Jialai12
1. Key Laboratory of Mechanics on Disaster and Environment in Western China of the Ministry of Education, Lanzhou University, Lanzhou 730000, China;
2. School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China
关键词:
小跨高比连梁强化配筋连梁抗震性能有限元深梁
Keywords:
small span-to-depth ratiocoupling beam with strengthened reinforcementseismic performancefinite elementdeep beam
分类号:
P315.9
摘要:
强化配筋连梁是指采用HRB400及以上钢筋、加密加粗腰筋、加粗箍筋的连梁。期望通过腰筋和箍筋形成的2层或更多层的高强钢筋网片来承受剪力,提高其抗震性能,施工较为方便,适用于小跨高比连梁。利用非线性有限元方法,在已完成普通配筋小跨高比连梁抗震性能试验的基础上,研究了跨高比为1.25的不同配筋形式连梁的抗震性能。研究表明:强化配筋连梁的骨架曲线出现2个峰值,峰值荷载为普通配筋连梁的1.37倍,其荷载下降速率约为普通配筋连梁的39.42%,具有较高的承载力。强化配筋连梁的峰值位移是集中对角斜筋、交叉斜筋和对角暗撑配筋连梁的三倍多,具有较强的变形能力。最后,建议采用深梁的方法计算强化配筋连梁的受剪承载力。
Abstract:
Coupling beam with strengthened reinforcement is reinforced by HRB400 or higher strength bar,densified and strengthened crude side bar,and strengthened stirrup.The side bar and the stirrup can form two or more layers high-strength steel grid to bear shear and improve the seismic behavior,and the construction is more convenient,which is applicable for small span-to-depth ratio coupling beam.Based on the existing experimental work on the seismic behavior of the conventional coupling beam with a small span-depth ratio,the nonlinear finite element method was used to study the seismic behavior of the coupling beams with a span-to-depth ratio of 1.25 and various reinforcement details.It is indicated that the coupling beam with strengthened reinforcement has a higher bearing capacity,because there are two peaks on its skeleton curve.Its decline rate of load is approximately 39.42% of that of the conventional coupling beam,while its peak load is 1.37 times.The coupling beam with strengthened reinforcement has a good deformation capability,because the peak displacement is 3 times as large as that of the coupling beam with the concentrated diagonal reinforcement,crossing diagonal reinforcement or diagonal brace reinforcement.It is recommended that the calculation method for the deep beam should be used to calculate shear strength of the coupling beam with strengthened reinforcement.

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相似文献/References:

[1]张超,陈向上,于德湖.小跨高比带楼板半通缝连梁抗震性能有限元分析[J].世界地震工程,2018,34(01):051.
 ZHANG Chao,CHEN Xiangshang,YU Dehu.Finite element analysis on seismic behavior of small span-depth ratio semi seam coupling beam with slab[J].,2018,34(01):051.

备注/Memo

备注/Memo:
收稿日期:2017-11-30;改回日期:2018-09-10。
基金项目:国家自然科学基金资助(项目批准号:51678283)
作者简介:柳斌,硕士,主要从事新型结构与抗震研究.E-mail:liubin15@lzu.edu.cn
通讯作者:张敬书,博士,教授,主要从事新型结构与抗震研究.E-mail:jshzhang@lzu.edu.cn
更新日期/Last Update: 1900-01-01