预制装配式剪力墙结构的连接方法及受力性能研究

发布时间：2018-05-25 01:36

本文选题：装配式 + 剪力墙　；参考：《西安科技大学》2015年硕士论文

【摘要】：论文对预制墙体竖向钢筋的不同连接形式进行了对比分析,同时对装配式剪力墙安装结合面的受力进行了讨论。利用数值模拟方法,对预制装配式剪力墙竖向钢筋套筒灌浆连接、插入式预留孔浆锚搭接连接以及后张预应力连接三种不同的连接方式进行了受力性能研究,并讨论了不同因素对承载能力的影响。论文得出以下主要结论:(1)从施工工艺来讲,竖向钢筋采用预留孔搭接连接简便易行,建议在实际中优先使用该方法;(2)预制装配式剪力墙结构的承载力计算,应考虑结合面的粘结作用;(3)通过数值模拟得出,同等因素下套筒灌浆连接方式可靠性、强度及整体性最好;(4)使用套筒灌浆连接时,连接截面处配筋率宜比采用现浇方式的截面配筋率提高50%;(5)在结合面配筋率相同的情况时,连接钢筋直径对受力性能有明显影响,较粗的钢筋受力性能更好。(6)在连接截面处,套筒连接的配筋率为1%左右时较为经济,进一步增加配筋率对承载力提升作用不大,同时配筋率过小则会达不到承载力要求。(7)装配式剪力墙的承载能力随混凝土强度等级提高而提高,但提高能力有限,且混凝土强度越高脆性越大,因此不建议通过提高混凝土强度来提高装配式结构的承载能力。
[Abstract]:In this paper, the different connection forms of precast wall vertical steel bar are compared and analyzed. At the same time, the force of assembly shear wall installation joint surface is discussed. Using numerical simulation method, the mechanical behavior of prefabricated shear wall with vertical reinforcement sleeve grouting connection, insert reserved hole slurry anchor lap connection and post-tensioning prestressed connection are studied. The influence of different factors on the bearing capacity is discussed. The main conclusions are as follows: (1) from the point of view of construction technology, it is easy to use the lapped connection of reserved holes in vertical steel bars, and it is suggested that this method should be used first in practice) to calculate the bearing capacity of prefabricated shear wall structures. By numerical simulation, it is concluded that, under the same factors, the reliability, strength and integrity of the sleeve grouting connection are best when the sleeve grouting connection is used. The reinforcement ratio at the connection section should be increased by 50% than that of the section with cast-in-place method. When the reinforcement ratio of the joint face is the same, the connecting steel bar diameter has obvious influence on the mechanical performance, and the thicker steel bar has better mechanical performance than the coarse steel bar. When the reinforcement ratio of sleeve connection is about 1%, it is more economical to increase the reinforcement ratio. At the same time, if the reinforcement ratio is too small, the bearing capacity of the fabricated shear wall will not reach the bearing capacity requirement. (7) the bearing capacity of the fabricated shear wall increases with the increase of concrete strength grade, but the improvement capacity is limited, and the higher the concrete strength, the greater the brittleness. Therefore, it is not recommended to improve the bearing capacity of assembly structures by increasing the strength of concrete.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU398.2

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