Shear behavior of precast concrete wall structure based on two-way hollow-core precast panels
Shear behavior of precast concrete wall structure based on two-way hollow-core precast panels
复制标题
基于双向空心预制板的预制混凝土墙体结构抗剪性能
DOI：
10.1016/j.engstruct.2018.08.103
复制
发表时间：
2018
影响因子：
5.5
通讯作者：
Sun Zhijuan
中科院分区：
文献类型：
--
作者：
Xiong Chen;Chu Mingjin;Liu Jiliang;Sun Zhijuan
本文提出了一种基于双向空心预制板的新型预制混凝土剪力墙体系。考虑到剪力墙的延性与其抗剪性能密切相关，对新提出的体系的抗剪性能进行了研究。首先，进行了1个现浇剪力墙试件和3个TWHCPP剪力墙试件的拟静力试验。试验结果表明，现浇剪力墙试件经历了斜拉破坏，其轴向承载能力在达到峰值后急剧下降。相比之下，TWHCPP剪力墙可以有效地避免这种脆性破坏，并能承受极限状态下的竖向和侧向荷载。其次，提出了TWHCPP剪力墙的数值模拟方法，并将其应用于三个TWHCPP剪力墙试件。预测的强度和破坏机理与实验结果吻合较好。最后，提出了TWHCPP剪力墙体系的抗剪强度估算方法。与试验结果相比，该方法具有较高的保守性，是一种适合于双肢高强剪力墙设计的方法。
In this study, a new precast concrete shear wall system based on two-way hollow-core precast panels (TWHCPP) is proposed. Considering that the ductility of a shear wall is strongly related to its shear behavior, the shear behavior of the newly proposed system was investigated. First, pseudo-static tests were performed for one cast-in-place shear wall specimen and three TWHCPP shear wall specimens. Test results indicate that the cast-in-place shear wall specimen experienced diagonal tension failure and its axial load carrying capacity decreased abruptly when the peak strength was attained. In contrast, the TWHCPP shear wall can effectively avoid such brittle failure and can sustain the vertical and lateral loads at the limit state. Second, a numerical simulation method for the TWHCPP shear wall was proposed and applied to the three TWHCPP shear wall specimens. The predicted strengths and failure mechanisms show good agreement with the experimental results. Finally, a shear strength estimation method was proposed for the TWHCPP shear wall system. Compared to the experimental results, the method yields conservative estimations; thus, it can be a suitable approach to the TWHCPP shear wall design.