轻钢龙骨内墙与钢框架新型连接的开发及性能研究

发布时间：2019-05-15 14:13

【摘要】：现阶段,国家越来越重视节能减排、百姓对房屋质量和舒适性的要求也不断提高,这就要求装配式钢结构住宅应充分利用其良好的抗震性能以及工业化建造优势,紧跟国家政策方向和市场需求。但就目前现状来说,装配式钢结构住宅的发展并不顺利,以墙体为主的围护体系的研究以及与住宅相配套的部品是阻碍其发展的主要因素。鉴于此,笔者针对轻钢龙骨内墙与钢结构主体的连接进行研究。轻钢龙骨内墙是由龙骨、面板和岩棉等材料组成的复合墙体,其中竖龙骨起支撑作用,两侧面板与竖龙骨用自攻螺钉固定,中间空腔填加吸声材料,以满足内墙隔声性能要求。轻钢龙骨内墙轻质高强、塑性好、韧性好、布置灵活,并且节约了大量粘土资源,是一种节能环保墙体,充分体现了绿色建筑的理念。本文设计了轻钢龙骨内墙顶部与钢梁或楼板的新型连接构造形式和轻钢龙骨内墙底部与地面的新型连接构造形式,确定了墙板与主体间缝宽的计算方式。对两种新型连接进行了受力计算,主要考虑了地震作用和支座相对位移对连接的影响,对顶部U型连接件焊缝和底部膨胀螺栓抗剪承载力进行了验算。研究表明,U型连接件的焊缝承载力和底部膨胀螺栓抗剪承载力均满足要求。利用有限元软件ABAQUS对层间相对位移作用下U型连接件与竖龙骨连接的受力状态进行有限元模拟分析,得出U型连接件与竖龙骨连接处接触反力变化曲线和接触面积变化曲线及各部分的应力变化曲线。研究表明,U型连接件与竖龙骨连接处的破坏主要集中在竖龙骨上。采用限元软件ABAQUS建立了新型连接下轻钢龙骨内墙的有限元分析模型,分别分析新型连接下轻钢龙骨内墙及连接件在均布荷载和层间位移作用下的变形和应力变化。研究表明：平面外均布荷载作用下,墙体承载力满足《钢结构住宅设计规范》规定；平面外层间位移作用下,新型连接下的墙体能适应小震框架结构的弹性层间位移限值和大震下框架结构的弹塑层间位移限值。
[Abstract]:At this stage, the state pays more and more attention to energy saving and emission reduction, and the requirements of the people for the quality and comfort of houses are also constantly improving, which requires that assembled steel structure houses should make full use of their good seismic performance and industrial construction advantages. Keep up with national policy direction and market demand. However, as far as the current situation is concerned, the development of assembled steel structure residence is not smooth. The research of wall-based enclosure system and the matching parts with housing are the main factors hindering its development. In view of this, the author studies the connection between the inner wall of light steel keel and the main body of steel structure. The inner wall of light steel keel is a composite wall composed of keel, panel and rock wool, in which the vertical keel plays a supporting role, the two sides of the face plate and the vertical keel are fixed with tapping screws, and the middle cavity is filled with sound absorbing material to meet the requirements of sound insulation performance of the inner wall. Light steel keel interior wall is light, high strength, good plasticity, good toughness, flexible arrangement, and saves a lot of clay resources. It is a kind of energy-saving and environmental protection wall, which fully embodies the concept of green building. In this paper, a new joint structure form between the top of the light steel keel interior wall and the steel beam or floor is designed, and the new connection structure form between the bottom of the light steel keel inner wall and the ground is designed, and the calculation method of the joint width between the wall board and the main body is determined. The stress calculation of the two new connections is carried out, and the influence of seismic action and relative displacement of the support on the connection is mainly taken into account, and the shear capacity of the weld of the top U-shaped connector and the expansion bolt at the bottom is checked and calculated. The results show that the weld bearing capacity of U-shaped connectors and the shear capacity of expansion bolts at the bottom meet the requirements. The finite element simulation analysis of the stress state between U-shaped connector and vertical keel under the action of relative displacement between layers is carried out by using the finite element software ABAQUS. The change curve of contact reaction force and contact area between U-shaped connector and vertical keel and the stress curve of each part are obtained. The results show that the damage of the joint between U-shaped joint and vertical keel is mainly concentrated on the vertical keel. The finite element analysis model of light steel keel inner wall under new connection is established by using finite element software ABAQUS. The deformation and stress change of light steel keel inner wall and joint under uniform load and interlaminar displacement are analyzed respectively. The results show that the bearing capacity of the wall meets the requirements of the Code for the Design of Steel structure Houses under the action of uniform load outside the plane. Under the action of the displacement between the outer layers of the plane, the wall under the new connection can adapt to the elastic interlaminar displacement limit of the small seismic frame structure and the elastic-plastic interlaminar displacement limit of the frame structure under the large earthquake.
【学位授予单位】：沈阳建筑大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU391

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