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The main content of membrane structure design

2021-11-25

Membrane structure can be roughly divided into three forms: skeleton type, tension type and inflatable type.

The membrane structure design mainly includes:

1. Initial state analysis: to ensure that a three-dimensional balanced surface with stable shape and uniform stress distribution is generated, and it can resist various possible load conditions; this is a process of repeated corrections.

2. Load state analysis: the tensile membrane structure itself is very light, only 1/5 of the steel structure, 1/40 of the concrete structure; therefore, the membrane structure has good adaptability to seismic forces, but is more sensitive to wind. . In addition, the effects of snow load and live load must be considered. Due to the lack of observational data at present, the design of membrane structure usually adopts the safety factor method.

3. Determine the size of the main structural components, and analyze the finite elements of the supporting structure. When the design method of the support structure is different from that of the membrane structure, attention should be paid to the conversion of coefficients between the different design methods.

4. Connection design: including bolts, welds and the dimensions of secondary components.

5. Tailoring design: This process should have the necessary test data, including the Young's modulus and the tailoring compensation value of the selected membrane material.

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