Steel structure grid structure

 

The steel structure grid structure is currently used in large-scale sports venues, industrial plants, theaters, and waiting halls. The method of this new style structure relies on the force of the steel body itself, and the steel balls are connected together by bolt balls to support each other, and the net is formed into various roof spaces of different shapes. From small meeting rooms of a few meters to industrial buildings ranging from a few hundred meters, these are the appropriate range for the space grid structure.

 

1. The shape of the steel structure grid structure is unrestrained. It combines the rhythm of classical architecture with the romance of modern art. As a result, more and more architects are using their ruggedness and artistry to design large roof skeletons. This novel and beautiful truss structure. A new object image has been constructed for modern architecture.

 

2. The steel structure grid is a multi-stabilized space structure. It is precisely because of the multiple super-stable features of the structure and the flexibility of its unique shape relative to other structures. The internal force calculation of the structure usually adopts the matrix displacement method. The matrix should be based on the engineering situation, and the simple engineering should have a matrix of tens of thousands of times. For complex projects, the matrix is ​​difficult to count. That is, using a computer using a Gaussian iterative method, the calculation takes several hours at a time. Because the internal force calculation of the structure is large, the design of the construction drawing is difficult, and the promotion of the structure of the grid is greatly restricted before the degree of computer-aided design is not completed.

 

The steel frame structure has been applied in many large venues today. From an architectural point of view, this is a revolution in building structures and building materials. From the artistic perception of the building body, the diversity of the truss structure changes. It adds an artistic sense to the production and living space of the people. The space grid structure has the advantages of light construction materials and convenient installation. At the same time, because the building material is combined with force, it also has a special effect of good seismic performance.

 

The steel structure grid is a wonderful flower in the garden of modern architectural science. In the past ten years, it has been widely applied and promoted in China. Looking at it, this beautiful city landscape is extending to a wider area.

 

Grid structure features:

 

1. The grid is a mesh structure composed of many pole frames. It is a high-order statically indeterminate space structure. The grid structure can be divided into two types: a flat grid and a curved grid.

 

2, the use of flat grids, the advantages are: space force system, the rods mainly bear axial forces, the force is reasonable, the overall material performance is good, the stiffness is large, the seismic performance is good. The type of rod is small and suitable for industrial production.

 

3. The flat net frame can be divided into two types: cross truss system and pyramid system. The pyramid system is more reasonable and more rigid.

 

4. The ratio of the height of the grid to the short span is generally around 1/15. The grid members are generally made of steel pipes, and the nodes generally use ball nodes.

 

First, the arch structure:

 

(1) The characteristics and application scope of the arch:

 

1. The arch is a structure with thrust, and its main internal force is axial pressure. Large-span arch structures can be constructed from concrete with good compressive properties.

 

2. Due to the reasonable force of the arch structure, it is widely used in buildings and bridges. Applicable to gymnasiums, exhibition halls, etc.

 

(2) Type of arch: The arch can be divided into three hinged arches, two hinged arches and no hinged arches, and the latter two arches are used more.

 

(2) Suspension structure

 

(1) The suspension cable structure is one of the ideal large-span structural forms and is widely used in bridges. The main load-bearing members of the suspension cable structure are tensioned steel cables, which are made of high-strength steel strands or steel wire ropes.

 

(2) The pulling force of the cable depends on the sag in the span, and the smaller the sag, the greater the pulling force. The sag of the cable is typically 1/30 of the span.

 

(3) Thin-walled spatial structure

 

(1) Also known as the shell structure. It belongs to the space-stressed structure and mainly bears the axial pressure in the curved surface, and the bending moment is small.

 

(2) Thin shells are often used in large-span roof structures, such as exhibition halls, clubs, and hangars. The thin-shell structure is mostly made of cast-in-place reinforced concrete, which is costly and time-consuming.