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分析轻型钢结构各种结构类型

来源:http://www.jnghbxg.com 日期:2021-04-15 发布人:yangxiang 浏览次数:
随着我国大中城市高层建筑禁止使用粘土砖,混凝土结构出现了施工复杂、工期长的问题。轻型钢结构受到工程界的青睐,已成为竞争力强的民用建筑结构体系之一。与传统的住宅建筑结构体系相比,高层钢结构不仅具有环保、节能、产业化的特点,而且具有强度高、重量轻、节能、抗震性能好的优点。
With the prohibition of using clay bricks in high-rise buildings of large and medium-sized cities in China, the problems of complex construction and long construction period appear in concrete structures. Light steel structure is favored by the engineering community, and has become one of the civil building structural systems with strong competitiveness. Compared with the traditional residential building structure system, high-rise steel structure not only has the characteristics of environmental protection, energy saving and industrialization, but also has the advantages of high strength, light weight, energy saving and good seismic performance.
轻型钢结构是指以框架为主要构件,沿房屋的纵向和横向承受荷载和抵抗水平侧向力的结构体系。框架结构可分为半刚框架和全刚架两种,框架结构的梁柱应刚性连接。与其他结构体系相比,框架结构体系可以增加建筑的使用空间,适用于各种使用功能的建筑。结构各部分刚度均匀,但结构体系弹性刚度较差,属于单一抗侧力体系,抗震能力较弱。
Light steel structure is a structural system with frame as the main component, which bears load and resists horizontal lateral force along the longitudinal and transverse direction of the house. Frame structure can be divided into semi-rigid frame and full rigid frame. The beam and column of frame structure should be rigidly connected. Compared with other structural systems, the frame structure system can increase the use space of buildings, and is suitable for buildings with various use functions. The stiffness of each part of the structure is uniform, but the elastic stiffness of the structural system is poor, which belongs to a single lateral force resisting system, and the seismic capacity is weak.
框架-支撑结构体系是指以轻型钢结构建筑物的框架体系为基础,由一定数量的竖向支撑沿建筑物的纵向和横向布置而成的结构体系,属于双抗侧力结构体系。支撑架是一道防线,框架是第2道防线。
Frame braced structure system is a kind of structure system based on the frame system of light steel structure building, which is composed of a certain number of vertical bracings along the longitudinal and transverse direction of the building. The support frame is a line of defense, and the frame is the second line of defense.
支撑架中的竖向支撑扣合或损坏后,由于支撑斜杆一般不承受竖向荷载,不影响结构承受竖向荷载的能力,也不危及结构的基本安全要求。虽然这种结构体系在国外应用历史悠久,技术和规范也比较成熟,但在我国是一种新型的结构体系。
After the vertical support in the support frame is buckled or damaged, the inclined support bar generally does not bear the vertical load, does not affect the ability of the structure to bear the vertical load, and does not endanger the basic safety requirements of the structure. Although this kind of structural system has a long history of application in foreign countries, and its technology and specifications are relatively mature, it is a new type of structural system in China.
框架-轻型钢结构体系是在框架结构中设置剪力墙,将框架和剪力墙组合在一起共同抵抗水平荷载而形成的。采用这种结构体系,建筑物的竖向荷载全部由钢框架承担,水平荷载引起的水平剪力由钢框架和墙板共同承担。
The frame light steel structure system is formed by setting shear wall in the frame structure and combining the frame and shear wall together to resist the horizontal load. With this structure system, the vertical load of the building is borne by the steel frame, and the horizontal shear force caused by the horizontal load is borne by the steel frame and the wallboard.
结构体系占用建筑面积小,能增加建筑使用空间;墙板具有较强的推力刚度和抗剪能力,适用于40层以上的高层建筑。但在初始受力阶段,由于剪力墙刚度较高,地震时容易出现应力集中,导致建筑物产生斜裂缝。
The structural system occupies a small building area, which can increase the building space; the wallboard has a strong thrust stiffness and shear capacity, which is suitable for high-rise buildings with more than 40 floors. But in the initial stress stage, due to the high stiffness of the shear wall, the stress concentration is easy to occur in the earthquake, which leads to inclined cracks in the building.