苏宇坤, 沈绍冬, 龚润华, 王海深, 潘鹏. 装配式干式连接剪力墙结构中楼板性能试验研究[J]. 工程力学, 2019, 36(12): 106-112,144. DOI: 10.6052/j.issn.1000-4750.2018.12.0703
引用本文: 苏宇坤, 沈绍冬, 龚润华, 王海深, 潘鹏. 装配式干式连接剪力墙结构中楼板性能试验研究[J]. 工程力学, 2019, 36(12): 106-112,144. DOI: 10.6052/j.issn.1000-4750.2018.12.0703
SU Yu-kun, SHEN Shao-dong, GONG Run-hua, WANG Hai-shen, PAN Peng. EXPERIMENTAL STUDY ON FLOOR SLABS IN PREFABRICATED SHEAR WALL STRUCTURES USING DRY CONNECTIONS[J]. Engineering Mechanics, 2019, 36(12): 106-112,144. DOI: 10.6052/j.issn.1000-4750.2018.12.0703
Citation: SU Yu-kun, SHEN Shao-dong, GONG Run-hua, WANG Hai-shen, PAN Peng. EXPERIMENTAL STUDY ON FLOOR SLABS IN PREFABRICATED SHEAR WALL STRUCTURES USING DRY CONNECTIONS[J]. Engineering Mechanics, 2019, 36(12): 106-112,144. DOI: 10.6052/j.issn.1000-4750.2018.12.0703

装配式干式连接剪力墙结构中楼板性能试验研究

EXPERIMENTAL STUDY ON FLOOR SLABS IN PREFABRICATED SHEAR WALL STRUCTURES USING DRY CONNECTIONS

  • 摘要: 装配式剪力墙结构中存在大量竖向拼缝,竖向拼缝采用干式连接可减少现场湿作业,提升建筑装配率。竖向拼缝采用干式连接后,由于拼缝宽度较小,拼缝两侧的剪力墙相对变形较大,而楼板在竖向拼缝处通常保持连续,因此在地震作用下,竖向拼缝处楼板局部将受到较强的剪切作用而发生严重破坏。针对上述问题,提出一种带局部加强构造的楼板做法,通过试验研究楼板在干式连接拼缝处的破坏现象和机理,并与现浇剪力墙进行了对比。试验结果表明:对于带竖向拼缝的剪力墙,楼板表现出明显的剪切破坏特征,在无干式连接节点时,楼板局部破坏严重,大震后难以修复;采用干式连接后,墙体的承载力和延性均有提升。由于干式连接节点的贡献,墙肢间相对变形减小,楼板损伤程度较轻,大震后更容易修复。

     

    Abstract: Vertical joints exist in a prefabricated shear wall structure, and using dry connections in prefabrication shear wall structures is appealing because it can avoid pouring concrete on site and increase the prefabrication ratio. In general, the joint width between the adjacent shear walls is small, and the deformation between the adjacent shear walls is relatively large if dry connections are adopted. On the other hand, the floor slabs are continuous at the joints. In this case, the slabs across the joint are easy to be damaged. Thusly, a construction detailing to strengthen the slab is proposed. Physical tests were carried out to investigate the damage characteristics and mechanism of the slab. The effects of the dry connection on the performance of the slab were also studied. The test results show that obvious shear failure occurs in the slab. It can be concluded from the tests that the damage in the slab of the slotted shear wall is severe and it is hard to be repaired. However, when the shear walls are connected by a dry connection, both strength and ductility can be improved. Moreover, the damage in the slab is less because the dry connections can decrease the relative deformation between adjacent shear walls. Then the slab can be repaired more easily after strong earthquakes.

     

/

返回文章
返回