虽然膜结构膜遮阳棚的应用范围很广，但并不是每个人都知道膜结构是什么样的建筑结构。实际上，可靠的薄膜遮阳板是由薄膜单元本身和支撑杆或拉索产生的拉应力组成的结构体系。如何设计好一个高质量的济南伸缩棚?

Although membrane structure membrane sunshade has a wide range of applications, not everyone knows what kind of building structure membrane structure is. In fact, a reliable membrane sunshade is a structural system composed of the membrane unit itself and the tensile stress generated by the support rod or cable. How to design a high-quality Jinan telescopic shed?

1、应力分析

1. Stress analysis

在设计薄膜遮阳板时，必须做好薄膜结构的应力分析。通常采用有限元法计算膜结构在雪荷载、自重等外部荷载作用下的响应。计算中应考虑几何非线性，而物理非线性可忽略不计。在静力分析过程中，如果膜单元中存在压应力，可以忽略膜单元在结构分析中的作用，但刚度矩阵不能奇异。

When designing the membrane sunshade, the stress analysis of the membrane structure must be done well. The finite element method is usually used to calculate the response of membrane structures under external loads such as snow load and dead weight. Geometric nonlinearity should be considered in the calculation, while physical nonlinearity can be ignored. In the process of static analysis, if there is compressive stress in the membrane element, the role of the membrane element in the structural analysis can be ignored, but the stiffness matrix cannot be singular.

2、考虑风荷载

2. Consider wind load

由于膜结构在重量、柔度和自振频率等方面都比其他传统结构小，因此静、地震作用不起主导作用，但在风荷载作用下，容易使结构产生风振现象，导致膜材料的撕裂破坏。因此，在设计薄膜遮阳板时，应根据当地风况计算风荷载。

Because the membrane structure is smaller than other traditional structures in terms of weight, flexibility and natural vibration frequency, static and seismic actions do not play a leading role, but under the wind load, it is easy to cause wind vibration of the structure, leading to the tearing of membrane materials. Therefore, when designing the membrane sunshade, the wind load should be calculated according to the local wind conditions.

3、先找形状

3. Find the shape first

所谓找形，就是根据膜材料的特性和建筑师的要求，找出合理的空间形式。在薄膜遮阳设计中，找形设计是和难点之一。为了使空间形状更为合理，通常采用力密度法、动力松弛法和非线性有限元法进行找形。

The so-called form-finding is to find a reasonable space form according to the characteristics of membrane materials and the requirements of architects. In the film shading design, form-finding design is one of the key and difficult points. In order to make the space shape more reasonable, the force density method, dynamic relaxation method and nonlinear finite element method are usually used to find the shape.

伸缩棚由于其性能可靠，美观、经济、实用，所以现在很多地方都会选择这种结构。但要使伸缩棚经久耐用，必须在设计中做好找形、应力分析和风荷载计算，并使薄膜表面有一定的曲率，使完成的伸缩棚不仅能使用，而且具有很大的刚度和良好的美观效果。更多相关内容就来我们网站//www.shmtd.com咨询！

Because of its reliable performance, beautiful, economical and practical, the telescopic shed will be selected in many places now. However, in order to make the telescopic shed durable, it is necessary to do a good job in shape finding, stress analysis and wind load calculation in the design, and make the membrane surface have a certain curvature, so that the completed telescopic shed can not only be used, but also have great stiffness and good aesthetic effect. Come to our website for more relevant content //www.shmtd.com consulting service