1.北京工业大学城市建设学部,北京100124
2.北京市住宅建筑设计研究院有限公司,北京100005
3.北京建筑大学土木与交通工程学院,北京100044
王振宇(1987―),男,高级工程师,博士。主要从事装配式结构抗震防灾研究。E‑mail: wangzhenyyu@zzjz.com
刘洪涛(1986―),男,副教授,博士。主要从事装配式结构防灾减灾研究。E‑mail: liuht0312@163.com
收稿:2024-01-05,
修回:2024-03-08,
纸质出版:2025-06-28
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王振宇,刘洪涛,杜修力.一字型带竖缝的干连接装配式剪力墙抗震性能研究[J].防灾减灾工程学报,2025,45(03):571-583.
WANG Zhenyu,LIU Hongtao,DU Xiuli.Study on Seismic Performance of Dry‑connected Precast Shear Walls with Vertical Seams[J].Journal of Disaster Prevention and Mitigation Engineering,2025,45(03):571-583.
王振宇,刘洪涛,杜修力.一字型带竖缝的干连接装配式剪力墙抗震性能研究[J].防灾减灾工程学报,2025,45(03):571-583. DOI: 10.13409/j.cnki.jdpme.20240105001.
WANG Zhenyu,LIU Hongtao,DU Xiuli.Study on Seismic Performance of Dry‑connected Precast Shear Walls with Vertical Seams[J].Journal of Disaster Prevention and Mitigation Engineering,2025,45(03):571-583. DOI: 10.13409/j.cnki.jdpme.20240105001.
相邻预制墙板之间的竖缝通过高强度螺栓和预埋连接钢板实现干法连接,构造简单,操作方便,传力直接。为研究该竖缝干连接装配式剪力墙的抗震性能,进行了1片现浇墙和4片干连接预制墙的低周往复加载试验,研究了竖缝干连接试件的破坏模式、滞回特性、刚度退化、耗能性能以及不同类型竖缝节点的连接特性。结果表明:竖缝干连接节点可以有效传递装配式剪力墙左、右墙肢剪力,使墙板承载能力满足设计要求,并具有较好的延性性能和耗能能力;但预制墙板破坏形态与现浇墙有所不同,受竖缝节点影响其裂缝分布区域更广,墙板耗能能力增强,且随竖缝连接强度增强,墙板强度和刚度趋近于现浇整体墙。竖缝干连接装配式剪力墙的层间变形主要由弯曲变形和剪切变形组成,墙板极限位移角均大于规范规定的弹塑性层间位移角限值(1/120),且其位移延性系数介于5.1~7.4,具有良好的变形能力和抗倒塌能力。另外,竖缝节点上移可以有效提高节点连接效率,改善墙板整体性和耗能能力,节约建设成本,因此在工程中建议节点布置在墙板中上部。
Vertical joints between adjacent precast wall panels are dry-connected using high-strength bolts and embedded steel plates. This method features simple construction
convenient operation
and direct force transfer. To study the seismic performance of dry-connected precast shear walls with vertical joints
one cast-in-place wall and four dry-connected precast walls were subjected to low-cycle reversed loading tests. The failure mode
hysteretic characteristics
stiffness degradation
energy dissipation capacity
and connection characteristics of different types of vertical joints were studied. The results indicated that the dry-connected vertical joints could effectively transfer shear forces between the left and right wall limbs of precast shear walls
enabling the wall panels to meet design load-bearing requirements while demonstrating good ductility and energy dissipation capacity. However
the failure pattern of precast walls was different from that of cast-in-place walls
with more widely distributed crack zones due to the influence of vertical joints
and the energy dissipation capacity of walls was enhanced. With the increase of vertical joint connection strength
the strength and stiffness of the precast walls approached those of cast-in-place walls. The inter-story deformation of dry-connected precast walls with vertical joints was mainly composed of bending and shear deformations
with the ultimate drift ratio exceeding the limit value of elastic-plastic inter-story drift ratio specified in the code (1/120)
and displacement ductility coefficient ranging between 5.1 and 7.4
exhibiting good deformation and collapse resistance. In addition
raising the position of the vertical joints could effectively improve joint connection efficiency
enhance wall integrity and energy dissipation capacity
and reduce construction costs. Therefore
it was recommended to position the joints in the upper-middle section of wall panels in engineering practice.
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