How to build a more solid tensile membrane structure

1. Connection reinforcement and reinforcement connectionThe steel structure connection method is the selection of welds, rivets, ordinary bolts and high-strength bolt connection methods, which should be strengthened according to the cause, purpose, structure and construction conditions according to the need, and the original connection method of the structure should also be considered. Steel structure reinforcement is generally more suitable for weld connection, friction type high-strength bolt connection, can also be based on weld and friction type high-strength bolt mixed connection, when using weld connection, the use of approved welding technology and connection materials.

2. Increase the reinforcement of component sectionsWhen using the enlarged cross-section to reinforce the steel member, the selected cross-sectional form should be conducive to the reinforcement technical requirements, and the existing defects and damage should also be considered.

3. Crack repair and reinforcementThe tensile membrane carport steel structure skeleton due to the repeated action of the load and the selection of materials, structure, manufacturing, construction and installation of improper causes of brittle tendency, star crack damage, to try to repair, before the repair to analyze the cause and severity of the cracks, targeted to improve the actual work of the structure or to carry out the tensile membrane carport is not suitable for repair and reinforcement of the components, to be dismantled and replaced.

1. The overall hoisting technology of multiple nodes is adopted, that is, according to the design height of the membrane body of the tensile membrane structure, the membrane body is hoisted in blocks according to the plane position, so as to prevent the phenomenon of shaking and disproportionate shaking of the membrane car building.

2. Sequential installation: that is, according to the installation part of the tensile membrane structure, determine the installation sequence, and the installation should also be carried out in order.

3. Splint connection: that is, the splint is used to connect the tensile membrane structure building membrane body and the cable, and attention should be paid to the use of different specifications of splints in different parts during construction, and the spacing between the splints should be controlled.

4. Set up safety rope: that is, use a safety rope to fix the membrane structure building outside the tensile membrane structure.

What is the specific content of the tensile membrane structure construction technology, the following Zhongda Consulting will answer for you in the shed chain.

The structure of film cutting, packaging and transportation cable membrane is usually complex, with many changes in various angles, and the processing accuracy is very high. In the production process, quality management should be strengthened to ensure the accuracy of production. Before the membrane structure is made, it is necessary to inspect the material and mechanical properties of the membrane materials and accessories used in the project according to the design and specification requirements, such as the bidirectional tensile test of the membrane.

The processing and production of membrane materials should be made by professionals in a professional workshop in strict accordance with the design drawings. Since the cable membrane structure is usually a spatial surface, the cutting is to use flat ** material to represent the spatial surface. There must be errors in this method of fitting the space surface with flat materials, so it is quite necessary for the cutting personnel to add some remedial measures in the process of membrane cutting.

The size of the cut diaphragm should be remeasured and numbered separately, and the measured deviation value should be recorded in detail. In the process of cutting operation, the folding and bending of the membrane should be avoided as much as possible, so as to avoid the bending and folding damage of the membrane and the wrinkles of the membrane surface, which will affect the aesthetics of the building. After the diaphragm blanking is completed, the hot fusion scheme is determined according to the drainage direction and the diaphragm connection node.

Before the formal heat sealing process, a welding test should be carried out to ensure that the strength of the weld is not lower than the strength of the base metal.

Before packaging, the perfect packaging plan should be determined according to the characteristics of the film body and the construction plan. For example, PTFE is coated with glass fiber as the base layer of the membrane material can be packaged in the form of a roll, in which the diameter of the core shall not be less than 100mm, for the membrane body that cannot be rolled into a cylinder, the membrane body can be lined with soft filler, and then folded and packaged. After the packaging is completed, mark the packaging content, the use part, and the folding and direction of the film body on the outer packaging of the film.

During the transportation of the membrane, it is necessary to avoid heavy pressure, bending and damage as much as possible. At the same time, the installation sequence should also be fully considered when bending and resistant transportation, and the membrane body should be transported in place as much as possible at one time, so as to avoid the secondary transportation of the membrane body in the field and reduce the chance of damage to the membrane.

The process of film processing and production is as follows: film cutting drawing, reviewing the drawing, film processing technology disclosure, inspection, lofting, cutting, film pre-assembly, film hot fusion, edge processing, forming size review, cleaning, packaging, and delivery.

Hello 1, the method of increasing tension in different positions Ming Dan The stretch film structure with high boundary stiffness is installed by pulling on the adjacent ground and lifting it with a guardrail. The off-site hoisting process is completed on the ground, which is convenient to operate, time-saving and labor-saving. But lifting requires large lifting equipment and enough working space.

2. Fastening method of antenna assembly If a rigid stretch film boundary is built between two commercial buildings. The supporting structure is the façade of the building, with a spacing of no more than 16 meters. Due to the conditions of the construction site, if the structure is assembled into blocks, it cannot be lifted, so the method of assembling and tensioning needs to be adopted.

3. The membrane structure project of the roof of the diving pool is mainly to maintain the integration of the membrane surface, and the supporting structure is an arched frame. In order to lift at the same time, two 100-ton cranes are used to lift the membrane surface into place, and then gradually lengthen the steel edge cable and membrane angle to pre-tension the membrane surface. The above three points are all about the construction method of tensile membrane structure, if you still have questions, you can feel free to consult us

The production of tensile membrane structure: 1. It should be polished and smooth; 2. In order to avoid wrinkling after the membrane surface device and ensure the required tension for planning, the device scale error of the membrane structure is requested to be as small as possible.

Characteristics of tensile membrane structure:

1. Lightweight: The reason for the low self-weight of the tensile structure is that it relies on the prestressed form rather than the material to maintain the stability of the structure.

2. Light transmittance: Light transmittance is one of the most widely recognized characteristics of modern membrane structure. The light transmittance of the membrane can provide the required illumination for the building, which is very important for building energy efficiency.

3. Flexibility: The tensile membrane structure is not rigid, and it will deform under the action of wind load or snow load.

4. Sculpture Sense Zen Learning: The unique curved surface shape of the tensile membrane structure makes it have a strong sense of sculpture. The membrane surface is self-balanced by tension.

5. Safety: The lightweight tensile membrane structure designed in accordance with the existing national norms and guidelines has sufficient safety.

Material of tensile membrane structure:

Most of the membrane structure is composed of steel hidden macro materials and cables, and the membrane materials combined with the structure are gradually becoming functional and intelligent.

The film is lightweight, free and beautiful; Light transmission, energy saving, environmental protection, excellent flame retardant performance; Anti-fouling and self-cleaning performance; Safety, long life and other advantages. <>

The tensile membrane structure is made of membrane material, steel cable and main column hook, and the steel cable and pillar are used to introduce tension into the membrane material to achieve stability.

Its main column is mostly steel truss, is the spatial structure of the triangular unit composed of straight rods, welds the steel truss between a plurality of triangular units, the structure is very stable and has a good supporting effect, but the truss that is put together after welding is longer, makes the tensile membrane structure of the main column is a steel truss not convenient for transportation and installation.

Technical Implementation Elements:

Aiming at the deficiencies that exist in the existing macro transport spike technology, the utility model discloses a quietly high object is to provide a tensile membrane structure that can be easily transported and installed by shielding.

Two adjacent short columns are clamped between each other, and are connected and reinforced with connectors, and after two parallel long columns are clamped through connecting rods, they are clamped with the connectors on two adjacent short columns by pull rods, so that they are more stable.

A plurality of short columns, connectors, connecting rods and pull rods can be quickly spliced to form three long columns arranged in a triangular prism shape, and then through the upper top and the base that are arranged on the column, the tensile membrane is connected and the upright column is fixed on the ground, and this tensile membrane structure achieves the effect of convenient transportation and installation by detachable, splicing and assembling the upright column.

First, the membrane structure adopts the limit state design method based on probability theory, and the design expression of partial coefficient is used to calculate.

2. The membrane structure should be selected according to the nature and grade of the building, service life, use function, structural span, fire protection requirements, regional natural conditions and the durability of the membrane.

3. The design of the membrane structure should be carried out according to the load, supporting conditions, production and processing, construction conditions and other special conditions.

Fourth, the design content of the membrane structure includes shape design, load analysis, cutting design, accessories design, and supporting structure design.

5. The shape design, load analysis and cutting design of the membrane structure should be integrated on the basis of considering the construction over-disturbance and seepage.

6. The membrane can only withstand tensile force, but cannot withstand pressure and bending moment.

7. The maximum principal stress of the membrane surface should be less than the strength design value of the membrane, and the minimum principal stress should be greater than or equal to the stress value of maintaining its initial equilibrium shape under the long-term load.

8. When designing the integrated membrane structure, the relaxation, creep and aging of the membrane should be considered.

9. When designing the membrane structure, the influence of the membrane replacement on the overall structure should be considered.

10. The design of the membrane structure should consider that when the membrane material destroys the stove plum ear, the supporting structure should still maintain its own strength, stiffness and stability.

Membrane cloth is a film of chemical fiber fabric with a coating on the surface. It is divided into two parts, the base layer is chemical fiber fabric (fiberglass glass fiber, polyester), which mainly determines the mechanical properties, provides the tensile strength of the material and the shear strength, etc.; The outer layer is a coating (PVC, Teflon, silicone resin silicon), which mainly solves the physical properties of the material, and provides the fire resistance, hunger resistance durability and waterproof self-cleaning properties of the material. Determined by the technical characteristics of the membrane cloth, it is not only a structural material, but also an enclosure material, and it is a new type of building structure envelope material that can organically unify the shape of the free curve and the transparent texture.

Its weight is light, the tensile strength is good, and it is more suitable for covering large space buildings. The membrane material used in the tensile membrane structure consists of two parts: the base cloth and the coating. The base cloth is mainly made of polyester fiber and glass fiber materials; The coating materials are mainly polyvinyl chloride and polytetrafluoroethylene.

Commonly used membranes are polyester fiber coated polyvinyl chloride (PVC) and glass fiber coated polytetrafluoroethylene (Teflon). The main characteristics of PVC material are low strength, high elasticity, easy aging, large creep, poor self-cleaning, but cheap, easy to process and make, rich color, good folding resistance. In order to improve its performance, a layer of PTFE coating can be applied on its surface to improve its anti-aging and self-cleaning ability, and its life can reach about 15 years.

Teflon material has high strength, large elastic modulus, self-cleaning, durability and fire resistance, but it is more expensive, not easy to fold, has high requirements for cutting and production accuracy, and has a life span of more than 30 years, which is suitable for permanent buildings.