首页|冷弯薄壁型钢混凝土框架-波纹钢板剪力墙结构抗震性能研究

冷弯薄壁型钢混凝土框架-波纹钢板剪力墙结构抗震性能研究

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本文提出了一种新型冷弯薄壁型钢混凝土框架-波纹钢板剪力墙结构(CTSCF-CSPSW).为了明确该结构的抗震性能,本文对一足尺CTSCF-CSPSW进行了低周往复加载试验,并进行了精细化有限元分析.结果表明:试件的失效主要是由于内嵌波纹钢板出现撕裂,柱底端混凝土开裂且波纹钢板底部螺栓孔承压破坏导致;结构的抗剪承载力随着钢板宽高比的增加,结构的峰值荷载以及初始刚度在不断增大,但是极限位移出现很大程度的减小;结构的抗剪承载力随着冷弯薄壁卷边槽钢厚度的增加即柱子刚度的不断增大和框架柱轴压比的减小,结构的峰值荷载、初始刚度以及极限位移均在不断增大.通过结果分析,建议波纹钢板宽高比取值应小于1.5;框架柱中冷弯薄壁卷边槽钢厚度取值应大于1mm;框架柱轴压比取值不大于0.3;钢板与底梁的连接建议增大角钢的尺寸即增加钢板的端距或采用焊接的方式.
Study on the seismic performance of cold-formed thin-walled steel concrete frame-corrugated steel plate shear wall structure
This paper presents a new type of cold-formed thin-walled steel concrete frame-corrugated steel plate shear wall(CTSCF-CSPSW).In this paper,a full-scale CTSCF-CSPSW is tested under low cyclic loading and used to carry out fine finite element analysis.The results show that the failure of the specimen is mainly due to the tearing of the embedded corrugated steel plate,the cracking of the concrete at the bottom of the column and the failure of the bolt hole at the bottom of the corrugated steel plate under pressure.With the increase of the aspect ratio of steel plate,the shear bearing capacity,peak load and initial stiffness of the structure are increasing,but the ultimate displacement is greatly reduced.With the increase of cold-formed thin-walled lipped channel thickness(column stiffness)and the decrease of the axial compression ratio of the frame column,the shear capacity,peak load,initial stiffness and ultimate displacement of the structure are increasing.Based on the analysis of the results,it is recommended that the width-to-height ratio of the corrugated steel plate should be less than 1.5.The thickness of cold-formed thin-walled channel steel in frame column should be greater than 1mm,and the axial compression ratio of the frame column should not exceed 0.3.It is suggested to increase the size of angle steel to connect the steel plate with the bottom beam,that is,to increase the end distance of the steel plate or adopt welding method.

cold-formed thin-walled steel concrete framecorrugated steel plate shear walllow cyclic loading testfinite element analysisseismic performance

徐强、杨志、张翔、乔文涛、苏佶智

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石家庄铁道大学土木工程学院,河北石家庄 050043

道路与铁道工程安全保障省部共建教育部重点实验室(石家庄铁道大学),河北石家庄 050043

国网河北省电力有限公司经济技术研究院,河北石家庄 050000

冷弯薄壁型钢混凝土框架 波纹钢板剪力墙 低周往复试验 有限元分析 抗震性能

河北省自然科学基金杰出青年科学基金项目

E2022210084

2024

建筑科学
中国建筑科学研究院

建筑科学

CSTPCD北大核心
影响因子:1.113
ISSN:1002-8528
年,卷(期):2024.40(1)
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