Three construction methods of steel structure space frame

 1、Aerial assembling method

　　Steel space frame with high altitude assembly method for installation, is first set up in the design position at the assembly bracket, and then use the crane to the space frame components pieces (or sub-blocks) up to the air design position, in the bracket for assembly. This method sometimes do not need large lifting equipment, but assembling bracket dosage, more work at height. Therefore, the high-strength bolts, steel space frame made of steel sections or bolted ball nodes of the steel pipe space frame is more appropriate, there are still some steel space frame with this method of construction.

　　2、Overall installation method

　　The whole installation method is the first space frame on the ground assembled into a whole, and then lifting equipment will be lifted to the overall design position to be fixed. This construction method does not require a tall assembly bracket, less overhead work, easy to ensure the quality of welding, but the lifting capacity of the lifting equipment needed, more complex technology. Therefore, this method is more suitable for the ball nodes of the steel space frame (especially the three-way space frame and other rod more space frame). According to the different equipment used, the overall installation method is divided into multi-machine lifting method, lever lifting method, jack lifting method and jacking method.




　　3、Multi-machine lifting method

　　This method is used for small and medium-sized space frame structure in height and weight. Before installation, the space frame on the ground for staggered assembly operations (i.e., assembly position and installation axis staggered a certain distance to avoid the position of the column). Then use multiple cranes (mostly crawler cranes or automobile cranes) to assemble a good space frame overall lifting to the top of the column above, in the air after shifting down in position fixed.

　　space frame assembly

In order to prevent the overall lifting of the space frame and the column touch, staggered distance depends on the space frame lifting process space frame and columns or columns between the legs of the net distance, generally shall not be less than 10 ~ l125px, and at the same time, to consider the convenience of the space frame assembly and the convenience of the crane work in air displacement. When needed, can consult with the design unit, will be part of the edge of the space frame of poles left until after the space frame lifting and then welding, or change part of the space frame affecting the lifting of the columns.

评论

发表评论

此博客中的热门博文

The development status of the space frame structure

图片
The development status of the space frame structure space frame   structure has been developed greatly in the last 30 years, and has been widely used inside and outside. space frame   structure plan arrangement is flexible, space shape is beautiful, convenient for building shape processing and decoration, decoration, can adapt to different span, different plane shape, different support conditions, different functional needs of the building.   Especially in the roof structure of large and medium span, the space frame   structure shows its superiority and is used in large number of large sports buildings, public buildings, industrial buildings, and also widely used in the roof of some small buildings, such as gas stations, toll stations, large canopies. In recent years, with the wide application of electronic computers and the development of computing technology, the design efficiency of the space   frame structure has been greatly improved. The construction and installation of the space
阅读全文

Cooling method of steel building structure

图片
 Steel structure plant mainly refers to the main load-bearing components are composed of steel. Including steel columns, steel beams, steel structure foundation, steel roof truss (of course, the span of the factory is relatively large, basically now are steel structure roof truss), steel roof, pay attention to the wall of steel structure can also be maintained by brick wall. Due to the increase of China's steel production, many have begun to use steel structure plants, which can also be divided into light and heavy steel structure plants. Industrial and civil construction facilities made of steel are called steel structures. 1. Heat preservation and cooling: Steel structure plant insulation film can isolate most of the solar radiation and conduction heat, reduce the indoor greenhouse effect. Then the temperature of the plant is greatly reduced to improve the environment of the steel structure plant. The commonly used methods now have the following two choices: the steel structure
阅读全文

What is the truss welding method?

图片
  truss roof Most of the rods in joist structures are welded at the nodes. Before welding, the webs and chords need to be cut in advance according to the shape of the weld seam of each member to be welded, which requires cutting of the web ends and slotting of the chords. Since the joist structure is intersected by coherent line between the rods and rods, the shape of rod end section is complicated, so in the actual cutting process, two methods of mechanical automatic cutting process and manual cutting process are generally used.
阅读全文