CN205531511U - Hyperbola appearance lattice frame adds bracing steel construction cooling tower - Google Patents

Abstract

The utility model discloses a steel structure cooling tower with a hyperbolic shape lattice frame and diagonal bracing, which comprises a bottom lattice column, a conversion truss and an upper double-layer tower tube, the conversion truss is installed on the upper part of the bottom lattice column, and the upper double-layer tower The tube is installed on the upper part of the conversion truss; the upper double-layer tower tube includes a lattice frame composed of orthogonally arranged lattice ring beams and lattice columns. There is a sub-structure; it also includes external diagonal braces and internal diagonal braces. Both external diagonal braces and internal diagonal braces are installed obliquely. The node on the inner tower of the tower. The utility model adopts a hyperbolic shape and has good thermal performance; compared with the concrete thin-shell tower, it has light weight, simple foundation treatment, and convenient construction; The strength of the material is fully utilized, the amount of steel used is low, and the structural rigidity is high under the same amount of steel used.

Description

A steel structure cooling tower with hyperbolic shape lattice frame and diagonal bracing

technical field

The utility model relates to a cooling tower, in particular to a steel structure cooling tower with a hyperbolic shape lattice frame and diagonal bracing.

Background technique

At present, domestic large-scale cooling towers mostly adopt hyperbolic reinforced concrete thin-shell structures. This type of structure is widely used because of its high operational reliability, good corrosion resistance and long service life. At present, it is possible to design a large cooling tower with a diameter of more than 150m and a height of about 200m. With the development of steel structure technology, large-scale dry natural ventilation steel structure cooling towers have more and more technical advantages over concrete structures. Its light weight, simple construction, fast speed, excellent earthquake resistance and wind resistance, low overall cost, environmental protection, steel can be recycled after the service life of the steel tower is over, and many factors make the advantages of the steel tower more prominent.

The Chinese patent No. 201110330021.6 discloses a large-scale hyperbolic steel structure cooling tower for power plants. The tower adopts a single-layer reticulated shell structure composed of linear oblique columns crossed, and the stiffening ring reinforcement layer is distributed along the height to increase the resistance of the single-layer reticulated shell. side stiffness. The slanted columns are mainly subjected to compression and bending forces, and require a large amount of steel. The single-layer reticulated shell steel structure needs to be rigidly connected, and the structure and construction are complicated.

Utility model content

The purpose of this utility model is to provide a hyperbolic shape lattice frame plus diagonally braced steel structure cooling tower, which adopts a hyperbolic shape, has good thermal performance, simple foundation treatment, convenient construction, and low steel consumption. Compared with the shell structure, the structural rigidity is higher under the same amount of steel, and the on-site assembly of components can be realized. The construction is simple and fast, and the structure has excellent seismic and wind resistance performance.

In order to solve the problems of the technologies described above, the utility model adopts the following technical solutions:

A steel structure cooling tower with a hyperbolic shape lattice frame and diagonal bracing, including a bottom lattice column, a transfer truss and an upper double-layer tower, the transfer truss is installed on the upper part of the bottom lattice column, and the upper double-layer tower is installed on the transfer truss The upper part; the upper double-layer tower tube includes a lattice frame composed of orthogonally arranged lattice ring beams and lattice columns, and a substructure installation position is arranged on the lattice frame, and a substructure is installed in the substructure installation position; Including external diagonal braces and internal diagonal braces, both external diagonal braces and internal diagonal braces are installed obliquely, the external diagonal braces are connected to the nodes on the outer tower of the upper double-layer tower, and the inner diagonal braces are connected to the inner layer of the upper double-layer tower Nodes on the tower. Setting diagonal braces can provide better lateral rigidity, which can be applied to taller steel cooling towers; the structural form of lattice frame plus substructure has a clear force. In terms of installation: In the form of lattice frame plus substructure, the lattice frame can be installed first, and then after the substructure is assembled on the ground, it can be hoisted uniformly, which can speed up the installation.

In the aforementioned steel structure cooling tower with a hyperbolic shape lattice frame and diagonal bracing, the secondary structure includes horizontal trusses and vertical trusses, and the horizontal trusses and vertical trusses are arranged orthogonally. Articulated connections.

In the aforesaid steel structure cooling tower with a hyperbolic shape lattice frame and diagonal braces, the outer diagonal braces and inner diagonal braces are arranged continuously from the top of the upper double-layer tower to the bottom of the upper double-layer tower, and the outer diagonal braces and the inner diagonal braces are continuously arranged. The internal diagonal braces all pass through the two opposite corners of the installation position of the substructure.

In the aforesaid cooling tower with a hyperbolic shape lattice frame and diagonal bracing steel structure, the bottom lattice column is an X-shaped cross plane truss, an X-shaped cross four-tube three-dimensional truss, a herringbone four-pipe three-dimensional truss or a figure-eight four-pipe three-dimensional truss truss.

In the aforementioned steel structure cooling tower with a hyperbolic shape lattice frame and diagonal braces, the external diagonal braces are rigid supports or flexible supports.

In the aforementioned steel structure cooling tower with a hyperbolic shape lattice frame and diagonal braces, the internal diagonal braces are rigid supports or flexible supports.

In the aforementioned steel structure cooling tower with hyperbolic shape lattice frame and diagonal bracing, the conversion truss is in the shape of a ring, and the conversion truss is a four-pipe three-dimensional truss.

In the aforementioned steel structure cooling tower with a hyperbolic shape lattice frame and diagonal bracing, the bottom lattice column and the transfer truss are connected through welded ball joints.

Compared with the prior art, the utility model adopts a hyperbolic shape and has good thermal performance; compared with the concrete thin-shell tower, it has light weight, simple foundation treatment, and convenient construction; compared with the single-layer reticulated steel tower, the structural components are Tension and compression are the main force, giving full play to the strength of the material, the amount of steel is low, and the structural rigidity is high under the same amount of steel; through reasonable connection node design, the components can be assembled on site, the construction is simple, the speed is fast, and it is earthquake-resistant and anti-corrosion. Excellent wind performance.

Description of drawings

Fig. 1 is the structural representation of a kind of embodiment of the utility model;

Fig. 2 is a structural schematic diagram of an embodiment of a lattice frame;

Fig. 3 is a schematic diagram of the layout of the secondary structure;

Fig. 4 is a structural schematic diagram of an embodiment of a substructure;

Fig. 5 is a schematic structural view of an embodiment of an outer diagonal brace and an inner diagonal brace;

Fig. 6 is a structural schematic diagram of an embodiment of a conversion truss.

Reference signs: 1-upper double-layer tower, 2-conversion truss, 3-bottom lattice column, 4-substructure installation position, 5-lattice ring beam, 6-lattice column, 7-secondary structure, 8 -vertical truss, 9-horizontal truss, 10-outer slant brace, 11-inner slant brace.

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described.

detailed description

Embodiment of the present utility model: as shown in Fig. 1, Fig. 2 and Fig. 3, a hyperbolic profile lattice frame plus diagonally braced steel structure cooling tower includes a bottom lattice column 3, a conversion truss 2 and an upper double-layer tower The tube 1, the conversion truss 2 are installed on the upper part of the bottom lattice column 3, and the upper double-layer tower 1 is installed on the upper part of the conversion truss 2; the upper double-layer tower 1 includes a lattice ring beam 5 and a lattice column arranged orthogonally A lattice frame composed of 6, the lattice frame is provided with a substructure installation position 4, and a substructure 7 is installed in the substructure installation position 4; it also includes outer diagonal braces 10 and inner diagonal braces 11, outer diagonal braces 10 and inner diagonal braces The braces 11 are arranged obliquely, the outer braces 10 are connected to the nodes on the outer tower of the upper double-layer tower 1, and the inner braces 11 are connected to the nodes on the inner tower of the upper double-layer tower 1.

Specifically, as shown in FIG. 4 , the secondary structure 7 includes horizontal trusses 9 and vertical trusses 8 , the horizontal trusses 9 and the vertical trusses 8 are arranged orthogonally, and both the horizontal trusses 9 and the vertical trusses 8 are hingedly connected to the lattice frame.

As shown in Figure 5, the outer braces 10 and the inner braces 11 are arranged continuously from the top of the upper double-deck tower 1 to the bottom of the upper double-deck tower 1, and both the outer braces 10 and the inner braces 11 pass through the substructure Install the two opposite corners of position 4.

As shown in Figure 1, the bottom lattice column 3 in this embodiment is an X-shaped cross plane truss, and the bottom lattice column 3 can also be an X-shaped cross four-tube three-dimensional truss, a herringbone four-tube three-dimensional truss or a figure-eight four-tube three-dimensional truss truss. The bottom lattice column 3 can also be a four-tube three-dimensional truss as shown in FIG. 2 . Both the outer diagonal brace 10 and the inner diagonal brace 11 can use rigid support or flexible support, such as: diagonal rods and/or steel cable rods, which are assembled on site by high-strength bolts and/or pin shafts, and the construction of this assembly method is simple , Fast installation. As shown in FIG. 6 , the conversion truss 2 is circular, and the conversion truss 2 is a four-tube three-dimensional truss. The bottom lattice column 3 and the conversion truss 2 are connected by welding ball joints.

The working principle of an embodiment of the utility model: the lattice frame adopts intersecting welded joints, pre-processed in sections according to the transportation capacity in the factory, and is connected by flange bolts on site; the vertical truss in the secondary structure is processed in the factory, and the horizontal truss All parts are assembled on-site with high-strength bolts or pins for each rod; inclined rods or cables are also assembled on-site with high-strength bolts or pins. The construction is simple and fast.

Calculation analysis shows that the thermal performance of the steel structure cooling tower with hyperbolic lattice frame and diagonal bracing of the utility model is good; compared with the single-layer reticulated shell, the structural components of the cooling tower are mainly stressed by tension and compression, and the material is fully utilized. High strength, low steel consumption, the tension and compression force of the rod is the uniform force of the whole section, and the structural rigidity is high under the same steel consumption; through reasonable connection node design, on-site assembly of components can be realized, the construction is simple and fast; the structure Excellent anti-seismic and wind-resistant performance.

In the actual engineering design, a reasonable hyperbola should be fitted according to the process conditions; the appropriate structural type, component section and node type should be selected according to site conditions, seismic fortification intensity, wind load and tower height, and the structural space model should be established. The finite element analysis software performs structural static analysis, seismic response spectrum analysis, supplementary calculation of time history analysis, overall and local buckling analysis of the structure, and structural nonlinear analysis if necessary; Overall and component section design. Through calculation analysis and research, it is found that the cooling tower with hyperbolic lattice frame and diagonal bracing steel structure of the utility model has good thermal performance, small steel consumption, high structural rigidity, simple construction, fast speed, and structural shock and wind resistance. excellent. It can be widely used in the design of natural draft cooling towers in various industries.

Claims (8)

1. A hyperbolic profile lattice frame adds a diagonally braced steel structure cooling tower, which is characterized in that it comprises a bottom lattice column (3), a conversion truss (2) and an upper double-layer tower tube (1), and a conversion truss (2 ) is installed on the upper part of the bottom lattice column (3), and the upper double-layer tower tube (1) is installed on the upper part of the conversion truss (2); the upper double-layer tower tube (1) includes a lattice ring beam (5 ) and lattice columns (6), the lattice frame is provided with a substructure installation position (4), and a substructure (7) is installed in the substructure installation position (4); it also includes external diagonal braces ( 10) and inner diagonal braces (11), outer diagonal braces (10) and inner diagonal braces (11) are arranged obliquely, and outer diagonal braces (10) are connected to nodes on the outer tower of the upper double-layer tower (1) , the inner diagonal brace (11) is connected to the node on the inner tower of the upper double-layer tower (1). 2. A kind of hyperbolic shape lattice frame according to claim 1 adds the diagonal bracing steel structure cooling tower, is characterized in that, secondary structure (7) comprises horizontal truss (9) and vertical truss (8), and horizontal truss (9) and the vertical trusses (8) are arranged orthogonally, and the horizontal trusses (9) and the vertical trusses (8) are both hingedly connected to the lattice frame. 3. A kind of hyperbolic shape lattice frame according to claim 1 and 2 adds diagonal brace steel structure cooling tower, it is characterized in that, outer diagonal brace (10) and inner diagonal brace (11) are all from the upper double-layer tower The top of the tube (1) is arranged continuously to the bottom of the upper double-layer tower tube (1), and the outer diagonal braces (10) and inner diagonal braces (11) both pass through the two opposite corners of the substructure installation position (4). 4. A kind of hyperbolic shape lattice frame according to claim 3 adds diagonal bracing steel structure cooling tower, it is characterized in that, bottom lattice column (3) is X-shaped intersecting planar truss, X-shaped intersecting four-pipe three-dimensional truss , Herringbone four-tube three-dimensional truss or eight-shaped four-tube three-dimensional truss. 5. A steel structure cooling tower with hyperbolic shape lattice frame and diagonal braces according to claim 3, characterized in that, the outer diagonal braces (10) are rigid supports or flexible supports. 6. A steel structure cooling tower with hyperbolic shape lattice frame and diagonal bracing according to claim 3, characterized in that, the inner diagonal bracing (11) is a rigid support or a flexible support. 7. A cooling tower with a hyperbolic shape lattice frame and diagonal bracing steel structure according to claim 3, characterized in that the conversion truss (2) is in the shape of a ring, and the conversion truss (2) is a four-pipe three-dimensional truss. 8. A cooling tower with hyperbolic shape lattice frame and diagonal bracing steel structure according to claim 3, characterized in that, the bottom lattice column (3) and the conversion truss (2) are connected by welded ball joints.