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如何确保膜结构看台的质量?
来源:http://www.sdcscp.com/ 发布时间:2021-09-13
随着膜结构这种新型建筑越来越被人们所关注,其优点也是被大家所熟知,而且也被更多的用于大跨度的地点搭建,其中更实用、更具艺术观赏性的就是膜结构看台。膜结构看台与膜结构车棚这种较小的建筑不同,其膜材跨度更大,对于看台的各方面刚性要求也更高,不然难免出现各种质量问题,那么在搭建的时候,怎么确保膜结构看台的质量就成为了十分重要的事情。
With the membrane structure being paid more and more attention by people, its advantages are also well known, and it is also more used for building in long-span places, among which the membrane structure stand is more practical and artistic. Membrane structure stand is different from membrane structure shed, which is a small building. Its membrane material span is larger and the rigidity requirements for all aspects of the stand are higher. Otherwise, various quality problems will inevitably occur. Therefore, how to ensure the quality of membrane structure stand has become a very important thing when building.
1、选用优良膜材与构件
1. Select excellent membrane materials and components
膜材的好坏对于膜结构看台来说至关重要,即使是同一种膜材,不同厂家、不同型号甚至不同生产批次,质量也有差异,实际应用时要认真选择、详细检查;膜材的局部质量瑕疵应在裁剪下料时将其去除掉。另外,膜结构采用金属构件应采取有用的防腐保护措施,设计时,构件的断面尺寸选择应考虑锈蚀的影响而留有余量,尽可能选用不锈钢材料制成的构件。
The quality of membrane material is very important for the membrane structure stand. Even if it is the same membrane material, different manufacturers, different models and even different production batches, the quality is also different. It should be carefully selected and checked in practical application; Local quality defects of membrane materials shall be removed during cutting and blanking. In addition, metal components used for membrane structure shall be provided with useful anti-corrosion protection measures. During design, the section size of components shall consider the influence of corrosion and leave allowance, and components made of stainless steel materials shall be selected as far as possible.
膜结构看台
2、设计时保证膜面刚度
2. Ensure the membrane surface stiffness during design
设计师在设计膜结构看台时应确保膜面在张拉后具有足够的刚度,有些情况下,膜面有可能出现松弛,就需要对其进行二次张拉,所以细部构造设计时要考虑到二次张拉的可能性。节点设计也要保证足够的转动自 由度,以适应膜面在风力作用,防止撕裂或变形。
When designing the membrane structure stand, the designer should ensure that the membrane surface has sufficient stiffness after tensioning. In some cases, the membrane surface may be relaxed, so it needs to be re tensioned. Therefore, the possibility of secondary tensioning should be considered in the detail structure design. The joint design shall also ensure sufficient rotational freedom to adapt to the wind action of the membrane surface and prevent tearing or deformation.
3、重视消防工作
3. Pay attention to fire fighting
消防工作不论到哪个地方都是十分重要的,膜结构建筑也不例外。膜结构看台的膜面应尽量减少可燃物体的靠近,要严格按建筑设计防火规范的要求设置相应的消防设施,同时施工方要尽可能采用不可燃PTFE涂层覆盖材料。
Fire fighting work is very important wherever you go, and membrane structure buildings are no exception. The membrane surface of the membrane structure stand shall minimize the proximity of combustible objects. Corresponding fire-fighting facilities shall be set in strict accordance with the requirements of the code for fire protection design of buildings. At the same time, the construction party shall use non combustible PTFE coating covering materials as far as possible.
4、保证连接构件的安 全性
4. Ensure the safety of connecting components
连接构件也是膜结构张拉中的重要因素,连接构件的设计要确保其满足机械强度的要求并有适当的安 全储备。关键部位可考虑设置安 全链等构造措施,以防万一连接件破坏时不致于危及到整个结构的安 全。
Connecting members are also an important factor in membrane structure tensioning. The design of connecting members should ensure that they meet the requirements of mechanical strength and have appropriate safety reserves. Safety chain and other structural measures can be considered for key parts, so as not to endanger the safety of the whole structure in case of connector damage.
5、预防膜面积水
5. Prevent membrane area water
设计膜面造型时,应采用较大的膜面坡度,并使膜面排水路径便捷。根据膜结构看台所在地的降雨情况在膜面上施加相应的竖向荷载。检查变形后的膜面等高线图,如在高点以外的部位出现近似圆形或椭圆形的区域,应修改膜面的形状。张拉时,膜面的预张力需达到设计的预张力水平。
When designing the membrane surface modeling, a large membrane surface slope shall be adopted, and the drainage path of the membrane surface shall be convenient. The corresponding vertical load shall be applied on the membrane surface according to the rainfall at the location of the membrane structure stand. Check the contour map of the deformed membrane surface. If there is an approximate circular or oval area outside the high point, the shape of the membrane surface shall be modified. During tensioning, the pretension of the membrane surface shall reach the designed pretension level.
膜结构看台质量在安 全上的要求较车棚更高,主要是因为其跨度太大,如果出现质量问题导致整个结构坍塌,造成的损失更大、后果更严重,同时膜结构看台下方更是供人遮阳避雨的地点,如果在有人的情况下出现问题,更是可能涉及到人身安 全,所以确保膜结构看台质量是十分重要的事情。
The quality and safety requirements of the membrane structure stand are higher than those of the shed, mainly because its span is too large. If the quality problem leads to the collapse of the whole structure, the loss will be greater and the consequences will be more serious. At the same time, the lower part of the membrane structure stand is a place for people to shelter from the sun and rain. If there is a problem in the presence of people, it may involve personal safety, Therefore, it is very important to ensure the quality of membrane structure stands.
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