Detailed analysis: Characteristics of steel structure grid structure

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steel structure grid structure

Steel grid structure is currently a common roof truss method for large and medium-sized sports venues, factories, cinemas, waiting rooms and other construction projects in China. This new structural method relies on the force of the steel body itself, using bolts to connect the steel beams together with overlapping support points, forming a network of roof trusses of different shapes. From conference halls as small as a few meters to factory buildings with a span of about 500 meters, these are all categories that space grid structures are suitable for.

1. The performance of steel structure grid structure is bold and extended. It not only contains the rhythmic beauty of ancient architectural structures, but also has the romance of contemporary modern sculptures. Therefore, more and more architects use its solidity and expressiveness to design and build large and medium-sized roof frames. This kind of novel and beautiful grid structure. Constructed a new overall image of objects for modernist architecture.

2. The steel structure grid is a multi-times ultra-stable indoor space structure. It is also due to the multiple super-stable characteristics of the structure and its unique degree of modeling flexibility compared to other structures. The drainage matrix displacement method is generally used to calculate the internal work of the structure. The order of diversion matrix introductions depends on the project status, and the number of diversion matrix introductions for simple projects can reach tens of thousands. For more complex projects, the number of diversion matrix introductions is countless. That is to say, the computer uses the Gaussian function iteration method to calculate once, which is only an hour. Due to the large amount of labor required to calculate the internal strength of the structure and the high difficulty of construction drawings, the promotion and application of grid structures is greatly limited before the auxiliary design level is completed.

Steel grid structures are used in many large and medium-sized exhibition halls today. From the perspective of the architectural profession, it is a revolution in building structures and building decoration materials. From the perspective of the artistic perception of architectural objects, the diversified modeling changes of the grid structure have changed. It adds an artistic touch to the people's manufacturing, living and home furnishings. The indoor space grid structure also has the advantages of light engineering materials and convenient installation. In addition, because building decoration materials are structurally stressed, they also have specific effects with good seismic resistance properties.

Steel structure grid is a strange flower in the contemporary architectural science botanical garden. In the past ten years, it has been widely used and promoted in China. From a distance, this beautiful city scenery stretches towards a wider area.

Grid structure characteristics:

1. The grid is a mesh structure composed of many poles. It is a high-order superstatically indeterminate indoor space structure. The grid structure can be divided into two types: tablet grid and inclined grid.

2. Tablet grids are widely used, and their advantages are: space stress management system, components mainly bear axial force, effective force-bearing, material saving, good overall performance, high bending stiffness, and good seismic performance. There are fewer types of components and are suitable for industrial production.

3. Tablet computer grids can be divided into two categories: cross truss structure system and pyramid system. The pyramid system is more effective in bearing force and has higher bending stiffness.

4. The ratio of the height to the short span of the grid is generally about 1/15. The grid components generally use seamless steel pipes, and the connection points generally use ball connection points.

1. Arch structure:

(1) The stress characteristics and application areas of the arch:

1. The arch is a torsional structure, and its main internal energy is the shaft diameter pressure. Concrete with excellent compression resistance can be used to build long-span arch structures.

2. Because the arch structure can effectively bear stress, it is widely used in engineering construction and highway bridges. Suitable for sports venues, exhibition halls, etc.

(2) Types of arches: Arches can be divided into three-hinge arches, two-hinge arches and unhinge arches. The latter two types of arches are more commonly used.

(2) Suspension bridge structure

(1) The suspension bridge structure is one of the more ideal long-span structures and is widely used in highway bridges. The key load-bearing prefabricated component of the suspension bridge structure is the tensioned steel cable. The steel cable is made of high-toughness steel hinges or galvanized steel wire ropes.

(2) The tensile resistance of the cable depends on the sag in the mid-span. The smaller the sag, the greater the tensile resistance. The sag of the cable is generally 1/30 of the span.

(3) Thick-walled indoor space structure

(1) Also called cover structure. It belongs to the spatial stress structure, mainly bears the shaft diameter pressure in the inclined plane, and the bending moment is not large.

(2) Thin shells are commonly found in large-span roof truss structures, such as exhibition halls, clubs, hangars, etc. Thin-shell structures mostly use poured concrete structures, which is time-consuming and template-intensive.