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膜结构景观工程材料的特点介绍
来源:http://www.sdcscp.com/ 发布时间:2022-03-25
1、材料特性:
1. Material properties:
膜结构景观的自重相当轻,膜材厚度通常在1mm左右,与压型钢板相比,虽然厚度相近,但承载能力要小得多,即使采用加劲钢丝绳,其自重也仅为10kg/M2一般轻钢结构屋面的自重至少为100kg/M2在上面由于其重量轻,膜结构可以轻便跨越数百米甚至千米。
The self weight of membrane structure landscape is quite light, and the thickness of membrane material is usually about 1mm. Compared with profiled steel plate, although the thickness is similar, the bearing capacity is much smaller. Even if stiffened steel wire rope is used, its self weight is only 10kg / m2. Generally, the self weight of light steel structure roof is at least 100kg / m2. On the upper surface, due to its light weight, membrane structure can easily span hundreds of meters or even kilometers.
所有膜材料都是半透明的,较大透光率可以达到20%,所以整个建筑白天不需要人工照明,同时,光线可以均匀扩散,从而创作出一个明亮的室内空间,没有眩光,此外,浅色薄膜可以反射至少70%的阳光,这可以大大减少夏季的传热,此外,没有照明电源,可以充分节约能源,膜结构景观的另一个优点是其自清洁性,目前生产的膜材料的涂层或表面层可以使其上积聚的灰尘容易被雨水冲走,从而保持明亮的外观。
All membrane materials are translucent, with a large transmittance of 20%, so the whole building does not need artificial lighting during the day. At the same time, the light can diffuse evenly, so as to create a bright indoor space without glare. In addition, the light colored membrane can reflect at least 70% of the sunlight, which can greatly reduce the heat transfer in summer. In addition, without lighting power supply, it can fully save energy, Another advantage of membrane structure landscape is its self-cleaning. The coating or surface layer of membrane materials currently produced can make the dust accumulated on it easy to be washed away by rain, so as to maintain a bright appearance.
膜结构车棚
2、设计特点:
2. Design features:
膜结构的设计不同于传统结构,膜材料轻薄,没有硬度,它只取决于曲率和预张力来发挥承重作用。膜结构的大部分形状是在施工过程中逐渐形成的,因此其初始形状应在设计之初确定,即膜表面的初始曲率和预张力应根据建筑造型和使用功能的要求确定,这就需要结构工程师的早期参与,使膜结构景观设计与结构设计紧密配合。
The design of membrane structure is different from the traditional structure. The membrane material is thin and has no hardness. It only depends on the curvature and pretension to play a load-bearing role. Most shapes of membrane structures are gradually formed in the construction process, so their initial shape should be determined at the beginning of design, that is, the initial curvature and pretension of membrane surface should be determined according to the requirements of architectural modeling and use function, which requires the early participation of structural engineers to closely cooperate with membrane structure landscape design and structural design.
根据初始形状进行荷载效应分析,考虑不同荷载组合下膜结构的内力和变形,此时要注意:①薄膜材料在经纬向的力学性能不同,应考虑材料的各向异性;②膜结构在荷载作用下的变形很大,在结构分析中应考虑几何非线性。
The load effect analysis is carried out according to the initial shape, and the internal force and deformation of membrane structure under different load combinations are considered. At this time, attention should be paid to: ① the mechanical properties of membrane materials in longitude and latitude are different, and the anisotropy of materials should be considered; ② The deformation of membrane structure under load is very large, so geometric nonlinearity should be considered in structural analysis.
膜结构设计的末后一步是切割分析,这在一般传统结构中是不可用的,膜结构完成后,其膜表面在空间上是三维的,而膜材料是二维平面,因此,空间表面必须分成条状切割件,以便在拼接和张拉后形成初始膜表面。问题的难点在于,在切削分析中必须考虑初始预张力和薄膜蠕变的影响。
The last step of membrane structure design is cutting analysis, which is not available in general traditional structures. After the membrane structure is completed, its membrane surface is three-dimensional in space, and the membrane material is two-dimensional plane. Therefore, the spatial surface must be divided into strip cutting parts to form the initial membrane surface after splicing and tensioning. The difficulty of the problem is that the effects of initial pretension and film creep must be considered in the cutting analysis.
各位顾客,以上关于膜结构车棚http://www.sdcscp.com知识分享,希望能帮助大家,在使用中有任何疑问,请随时联系相关人员,我们将为您提供周到的技术支持服务。
Dear customers, the above is about the membrane structure shed http://www.sdcscp.com Knowledge sharing, hope to help you. If you have any questions in use, please feel free to contact relevant personnel, and we will provide you with thoughtful technical support services.
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