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Research on Shear Performance of a New Type of Prefabricated Shear Wall with Alveolar-Type Connections
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摘要: 为解决装配式剪力墙安装定位困难、施工速度慢等问题，提出了一种采用齿槽和U型套箍连接相结合的新型装配式剪力墙结构，通过分析该剪力墙水平接缝的抗剪机理初步提出了相应的抗剪承载力计算模型。然后在验证有限元建模方法有效性的基础上，对新型装配式剪力墙抗剪性能进行了分析，分析结果表明新型装配式剪力墙结构受力性能良好，其抗剪承载力略高于现浇剪力墙；对于新型含齿槽式连接装配式剪力墙抗剪性能，齿槽和后浇暗梁起主要作用，随着后浇混凝土强度的增加，其抗剪性能显著提升，而齿槽高宽比和暗梁高度变化对其影响较小。最后对比了新型含齿槽式连接装配式剪力墙抗剪承载力理论计算值与有限元分析值，发现两者吻合较好，最大相对误差不超过10%。Abstract: To solve the problems of difficult installation and positioning, and slow construction speed of prefabricated shear walls, a new type of prefabricated shear wall structure combining alveolar and U-shaped ferrule connections was proposed. The corresponding shear bearing capacity calculation model was preliminarily proposed by analyzing the shear-resisting mechanism of the horizontal joint of the structure. Then, based on the verification of the effectiveness of the finite element modelling method, the shear properties of the new type of prefabricated shear wall were analyzed. The analysis results showed that the new prefabricated shear wall structure exhibited a good mechanical properties, and its shear capacity was slightly higher than that of cast-in-place shear wall. For the shear properties of the new type of prefabricated shear wall with alveolar-type connections, the alveolar and the hidden beam played a major role in shear resistance. With the increase of the strength of the cast-in-place concrete, its shear properties improved significantly. However, the change of the alveolar aspect ratio and the height of the concealed beam had little influence on it. Finally, the theoretically calculated and finite element analysis values of the shear capacity of the new type of prefabricated shear wall with alveolar-type connections were compared. It was found that they matched well, and the maximum relative error was less than 10%.
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