新型装配式空心板—框架剪力墙混合结构抗震性能研究

发布时间：2018-06-17 05:45

本文选题：预制空心板 + X水平斜撑　；参考：《西安建筑科技大学》2015年硕士论文

【摘要】：随着建筑业的飞速发展,传统的房屋建造方式弊病凸显,工厂化、装配化、精细化正成为历史发展的必然趋势。国内外研究表明,装配式预制结构与现浇结构相比,存在一定差距,如何改进与发展,是当前亟待深入研究和解决的课题。本文基于课题组提出的在板底增加斜撑,在梁-板、板-板结点采用可靠连接方式的新型装配式楼板体系,采用缩尺结构模型试验与有限元模拟分析相结合的方法,进行了如下研究工作:(1)精心设计了梁-板节点、梁-柱节点、梁-墙节点、板缝节点;按1/4比例缩尺制作了四个试验模型,分别为:带X水平斜撑的钢框架剪力墙结构SJ1、带X水平斜撑的新型装配式空心板-钢框架剪力墙混合结构SJ2/SJ3(无后浇层)和现浇板-钢框架剪力墙混合结构SJ4。(2)对SJ1与SJ2进行了弹性阶段的拟静力对比试验,试验表明:新型装配式空心楼板具有良好的空间整体性能,能够与钢框架-剪力墙结构形成良好的统一整体,有效传递水平荷载。(3)以SJ2为例对新型装配式空心楼板进行了平面内力学特性分析,形成了SJ2的整体抗侧刚度矩阵和平面内变形矩阵。通过计算发现,按本文提出的节点设计方法连接的装配式空心楼盖板在地震加速度为0.1g(抗震设防烈度为7度)时的平面内变形很小,可近似按刚性楼板对其进行抗震设计。(4)对SJ3与SJ4进行了弹性阶段的拟静力对比试验,并对SJ4进行了破坏试验。试验表明:X斜撑对装配式结构的空间整体性能和抗震性能起到了预定的改善效果;在弹性阶段,两者的空间整体性能和抗震性能近似等同。(5)用ABAQUS有限元对SJ3和SJ4进行了对比模拟,结合试验结果给出了如下建议,即在设防烈度要求较小(小于8度)的地区预制楼板的后浇层建议用X水平斜撑代替,在设防烈度要求较大(大于8度)的地区仍建议保留后浇层,以保证装配式混合结构的空间整体性和抗震性能。
[Abstract]:With the rapid development of the construction industry, the disadvantages of the traditional housing construction mode become prominent, factory, assembly, refinement is becoming the inevitable trend of historical development. Studies at home and abroad show that there is a certain gap between prefabricated structure and cast-in-place structure. How to improve and develop is an urgent problem to be studied and solved. This paper is based on a new type of fabricated floor system, which adds inclined brace at the bottom of the plate and uses reliable connection at the beam-slab and plate-plate junctions, and adopts the method of combining the model test of the scale structure with the finite element simulation analysis. The following research work was carried out: (1) carefully designed beam-plate joints, beam-column joints, beam-wall joints, plate joints, and four test models based on a scale of 1 / 4. They are: steel frame shear wall structure SJ1 with X horizontal diagonal brace, new fabricated hollow slab-steel frame shear wall hybrid structure SJ2- SJ3 (without post-pouring layer) and cast-in-place slab-steel frame shear wall hybrid structure SJ _ 4. 2) SJ _ 1 / SJ _ 1 / SJ _ 1 / SJ _ 1 / SJ _ 1 / SJ _ 1 / SJ _ 1 / SJ _ 1 / SJ _ 1 / SJ _ 1 / SJ _ 1 The quasi-static contrast test with SJ _ 2 in elastic stage was carried out. The test results show that the new assembled hollow floor slab has good overall spatial performance and can form a good unified whole with steel frame-shear wall structure. Taking SJ2 as an example, the in-plane mechanical properties of the new fabricated hollow floor are analyzed, and the overall lateral stiffness matrix and in-plane deformation matrix of SJ2 are formed. Through calculation, it is found that the plane deformation of the fabricated hollow floor slab is very small when the seismic acceleration is 0.1 g (the seismic fortification intensity is 7 degrees) according to the joint design method proposed in this paper. The quasi static test of SJ3 and SJ4 in elastic stage and the failure test of SJ4 are carried out according to the seismic design of rigid slabs. The test results show that the ratio X slanting brace has a predetermined improvement effect on the overall spatial performance and seismic performance of the assembled structure; in the elastic stage, The spatial integral performance and seismic performance of the two are approximately equal. 5) the comparison and simulation of SJ3 and SJ4 are carried out by Abaqus finite element method. The following suggestions are given in combination with the experimental results. That is, in areas where the intensity of fortification is low (less than 8 degrees), it is suggested that X horizontal diagonal brace should be used in the post-pouring layer of the precast floor, and that the post-pouring layer should still be retained in the area where the fortified intensity requirement is greater than 8 degrees. In order to ensure the spatial integrity and seismic performance of the assembled hybrid structure.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU398.9

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