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Showing posts with the label space frame structure

Influence of space frame fabrication, installation method and span size on space frame structure selection

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The space frame structure is affected by many factors, such as space frame production, installation method, span size, steel index, etc., which all affect the determination of which space frame form to use to a certain extent. 1. For example, the joints are welded, and the space frame composed of plane trusses is more convenient to make than the space frame composed of quadrangular pyramids; the two-way orthogonal space frame is more convenient than the two-way oblique space frame and the three-way space frame. The frame is convenient; the quadrangular pyramid space frame is more convenient than the triangular pyramid space frame. 2. If the installation method does not adopt the overall lifting or hoisting, but adopts the strip or block installation, or adopts the high-altitude sliding method, select the two-way orthogonal positive space frame, the positive square pyramid space frame, and the positive evacuated square pyramid space. The three orthogonal space frames such as the frame ...

Space frame structure pays attention to safe and civilized construction management

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Corresponding protective measures should be taken for the lifting and stacking of finished products of the space frame  structure to prevent damage to the surface of the components; materials, semi-finished products and finished products should be stacked reasonably to ensure smooth roads and keep the workshop clean. Before the start of the space frame  structure project, make a safety technical disclosure to all construction personnel, and make a disclosure record; all personnel participating in the processing and manufacturing of the space frame d structure must strictly implement the safety operation regulations for this type of work and the relevant current national technical regulations; must implement t he principle of "three no harm": neither harm others; do not harm your self; do not be harmed by others. Seriously participate in the factory safety meeting, hold every pre-shift safety meeting well, and make careful records. Safety precautions should focus on preventin...

How to ensure the quality of the bolt ball space frame

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The space frame structure is widely used in large hangars, stadiums, exhibition halls, theaters and various industrial plants. In modern construction, the requirements for the construction plan of the bolt ball space frame are relatively strict, so how to ensure the quality of the bolt ball space frame during the design, production and installation process? One is material selection. The selection of materials needs to meet the standards and control the hardness of the materials. The second is design. It needs to be carried out in strict accordance with national standards to achieve excellence. Third, after the installation of the bolt ball space frame is completed, it is necessary to carefully check the rust, drilling, and oil stains on both sides of the connecting platform and the welding seam within the range of 30-50mm, which needs to be removed in time. Fourth, after the cleaning is completed, it is necessary to conduct ultrasonic testing on the building.In the event of non-confo...

Explain the development law of space frame structure in detail

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  The development of the space frame structure is closely linked to the needs of life and production, the level of science and technology, and the development of material conditions. It has undergone a long development process.It has become one of the most important and active development areas in the architectural structure discipline of the 21st century. Reviewing the development process of the  structure, we can summarize some development laws of it. The span of the space frame structure is getting bigger and bigger.From St. Peter’s Basilica in Ancient Rome to the "Millennium Dome" in London, England,its diameter has been expanded from 42m to 320m.Behind every innovation and development of the space frame structure, it is accompanied by the continuous increase of the span of the building.In recent years, more and more buildings have been built or under construction that exceed the span of the hectometer, and various forms of space frame structures have developed to super-...

Basic design principles of seismic space frame

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  What are the   b asic design principles of seismic space frame  structure ? In general, it should be allowed to calculate the horizontal earthquake action in the two main axis directions of the building structure, and carry out the seismic check.The horizontal seismic action in each direction should be borne by the lateral force resisting members in that direction.For structures with obliquely crossed lateral force-resistant members, when the angle of intersection is greater than 15 ° , the horizontal seismic action in the direction of each lateral force-resistant member shall be calculated separately. For space frame  structures with significantly asymmetrical mass and stiffness, the torsional effect under the action of a two-way horizontal earthquake should be included. In other cases, the method of adjusting the seismic effect should be allowed to be included in the torsional impact. For large-span and long cantilever structures in the seismic fortification of e...

Methods of constructing space frame in winter

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  What installation matters should be paid attention to if the space frame structure is constructed in the cold winter? Today I will share some methods with you briefly. 1.  Before installing the space frame, we should remove ice, snow and dew on the surface of the components but not damage the coating. 2.  When assembling the space frame, we need to remove the rust, burrs, dirt, oil, snow and other debris left in the 50mm joints to keep the joints dry and free of residual moisture. 3.  Anti-slip spacers should be added when using steel cables to hoist the space frame. The installers need to use ropes to bind the gusset plate firmly that is lifted simultaneously with the components. 4.  The welding rod used under minus temperature should not be exposed for more than 2 hours, and it must be re-baked if it exceeds 2 hours. The number of baking of the electrode can not exceed 3 times. 5.  When space frame components are manufactured at positive temperature an...

Advantages and disadvantages of space frame structure

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  The space frame  structure is a form of spatial grid structure. Most of the grid knots are made of steel tubes and spherical nodes.   Generally, the truss structure is divided into four categories, which are :  plane truss system, quadrangle cone, triangular cone and hexagonal cone. In the surface system of the turbine house in the main plant of the thermal power plant, a four-cone network frame is usually used. The bottom edge of the four-cone network frame is parallel or perpendicular to the boundary, and the corner cone covers the whole network frame plane. The upper (lower) chord nodes of the grid frame are the vertices of the Angle cone set in a straight (reverse) direction, or the corner points of the bottom edge of the a ngle cone set in a straight (reverse) direction, so that the plane projection of the upper and lower chord in the same direction just forms two groups of parallel lines, half of the spacing of the grid.   The upper and lower chord meshe...