The influence of geometric nonlinearity should be considered in the calculation of membrane structures based on their large deformation characteristics, and the material properties can be considered in accordance with linearity.
Cables and membranes in membrane structures can only accept tension, but not pressure and bending moment. The cable membrane relaxation shall be avoided as far as possible during the planning under normal service conditions. In the planning, it shall be ensured that the stress of the membrane material under the load effect shall not be greater than the allowable stress of the material.
Load and load effect combination The load and load effect combination of the steel structure planning part of the membrane structure shall be calculated in accordance with the Load Code for Building Structures.
The dead load, roof live load, wind load, snow load and initial pretension shall be considered for the load acting on the membrane structure. The load code value shall be taken in accordance with the relevant provisions in the load code for building structures. The shape coefficient of wind load in membrane structure planning shall be specially studied or recognized through wind tunnel test. The calculation of internal force and stress of membrane materials shall consider the combination of short-term and long-term effects of loads, which shall be combined by several methods. Membrane structure landscape
Planning process
The stress state of membrane structure can be divided into zero state of prestress, shape of prestress and load state. The whole process analysis includes shape analysis, load analysis, cutting analysis and construction process planning.
Shape analysis shall recognize the geometric shape of membrane structure in self equilibrium state that meets certain initial stress distribution. Shape analysis is the foundation for load analysis and cutting analysis.
The internal force and displacement of membrane structures satisfying static equilibrium conditions under load effect shall be recognized in load analysis.
Cutting analysis is to divide the space undeveloped surface properly according to geometric topology theory, turn the divided membrane into a plane, and recognize the cutting pattern of membrane materials according to the principle of compensation method.
In the construction process planning stage, reasonable construction process and construction technology shall be selected and recognized to ensure the reliability of the construction process, including the process of admitting the introduction of initial pretension and arranging the construction sequence.
The membrane structure belongs to the modern architecture, which can build a landmark image project, and has the use of practicality and appearance to add scenery. It is widely used in the world, and also reflects a new architectural style, with its beautiful curve shape. It is said that it has reached the representativeness of modern architecture, with a new sense of vision.
What are the advantages of membrane structure?
Reasonable cost: the cost of membrane structure buildings is only about that of traditional buildings. The cost can be determined according to different requirements and spans. The difference and change in the planning scheme can be compared to the outstanding price to achieve benefits.
Unique shape, novel and beautiful, rich color.
Short construction period: compared with the traditional construction method, the construction period of the membrane structure shed can be shortened by at least half, and the general project can be completed in a very short time, and the advantage of the scene membrane structure shed is that it can reach the fixed parking space, providing fixed protection measures for cars.
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