CN110388119A - A modular assembled steel structure grid tower - Google Patents

Abstract

The invention discloses a modular assembled steel structure grid tower. The steel structure grid tower is composed of a series of top edges of modular units that are sequentially connected by bolts in the horizontal direction to form a closed loop, and the vertices of the upper module units and the connectors of the lower module units are connected by bolts and assembled vertically layer by layer; The modular unit is composed of three components connected with three connectors at a certain angle to form a triangular module unit, or a quadrilateral or hexagonal modular unit of different shapes derived from a triangle; The modular unit apex connectors are bolted together to form a rigid node. The invention has the advantages of light weight, simple installation, high precision, fast construction speed and low comprehensive cost, and is convenient for realizing standardized design, industrialized production and assembled construction.

Description

A modular assembled steel structure grid tower

technical field

The invention belongs to the technical field of industrial and civil structure design, in particular to a modular assembled steel structure grid tower.

Background technique

In the field of power generation, cooling towers basically adopt reinforced concrete thin-shell hyperbolic, straight-conical cooling towers. In terms of structure, the reinforced concrete cooling tower is a typical rotating shell structure. This structural form has been researched and practiced for many years, and has been widely used in engineering. However, due to factors such as the heavy weight of the concrete structure, the need for on-site pouring, the long construction period and rising costs caused by it, it gradually loses its advantages, and the problems of large resource consumption and serious environmental pollution in the production and construction process are also contrary to the current environmental protection concept advocated. . In the construction of power plants, the construction of cooling towers is the main factor restricting the construction period in winter. There are wet operations on site for reinforced concrete cooling towers, and the construction is difficult and takes a long time. In recent years, there have been occasional cooling tower construction safety accidents caused by rushing construction deadlines. In this context, steel structure has become a new direction for cooling tower structure selection.

In the past two years, the state and various provinces and cities have intensively issued relevant standards and incentive policies, requiring vigorous development of prefabricated buildings, especially steel structure buildings. The steel structure has light weight, excellent earthquake resistance and wind resistance; on-site assembly is simple, construction speed is fast, construction in cold regions is not subject to seasonal restrictions, and the overall cost is low. After the steel structure building (structure) reaches its service life, the steel can be recycled and reused, which is green and environmentally friendly.

In order to solve the construction problems of reinforced concrete cooling towers in extremely cold areas, the applicant applied for ZL201110330021.6 "A Large-scale Hyperbolic Steel Structure Cooling Tower for Power Plants", which is a single-layer reticulated shell structure composed of linear oblique columns crossed, along the height A reinforcing ring rod is set on the top to increase the lateral stiffness of the single-layer reticulated shell. However, the oblique grid is a rhombus grid, which has poor integrity; the calculated length of the component is large, and the stability is poor; and it is difficult to weld and assemble on site, and the welding deformation is difficult to control.

In order to solve the problem of large steel consumption and uneconomical consumption of single-layer cross-grid steel structure cooling towers, the applicant applied for ZL201620061291. Frame plus diagonal bracing structure. However, the columns, ring beams, and supports are double-layer structures, which fail to play the overall spatial role of the concrete rotating thin shell, and there are many rods and nodes, which makes it difficult to weld and assemble on site, and the welding deformation is difficult to control.

The ZL 201620075618.9 "a hyperbolic four-tube lattice oblique grid steel structure cooling tower" applied by the applicant is a local triangular stable structure that adopts four-pipe lattice oblique columns connected with four-pipe lattice ring beams through nodes . However, the overall structure is a four-tube lattice oblique grid structure, which fails to give full play to the overall space function of the concrete-like rotating thin shell, and there are many rods and nodes, which makes it difficult to weld and assemble on site, and the welding deformation is difficult to control. In order to realize the assembly and construction of the steel structure cooling tower, the applicant applied for ZL 20161049769.1 "an assembled steel structure cooling tower composed of six-rod tetrahedron units", which is composed of a series of six-rod tetrahedron module units connected and combined according to certain rules It is made of a joint of welded ball and flange, connected by high-strength bolts. However, in the formed structure, there are no horizontal chords in the outer structure and no vertical chords in the inner structure, which fails to play the overall spatial role of a concrete rotating thin shell, and one unit connects four flanges at the same time, requiring processing High precision, flange connection nodes affect envelope structure connections.

Therefore, it is necessary to seek a method that can give full play to the overall spatial effect of the concrete-like rotating thin shell, with high spatial rigidity and good stability; it can be standardized in design, industrialized production, and fully assembled construction; it is especially suitable for small and medium-sized cooling systems with a wide range of applications. The steel grid tower of the tower is a technical problem to be solved urgently by those skilled in the art.

Contents of the invention

In view of the above existing problems, the object of the present invention is to provide a modular assembled steel structure grid tower. The steel structure grid tower can give full play to the overall spatial effect of the concrete-like rotating thin shell, with high spatial rigidity and good stability; simple structure, convenient installation, and fast construction speed; it can realize standardized design, industrialized production, and fully assembled construction ; Low steel consumption and low cost.

To achieve the above object, the present invention adopts the following technical solutions:

The steel structure grid tower is composed of a series of modular unit top edges which are sequentially connected by bolts in the horizontal direction to form a closed loop, and the upper and lower module units are connected by bolts and assembled vertically layer by layer; the modular units are composed of three components Connect with three connectors at a certain angle to form a triangular module unit, or a quadrilateral or hexagonal module unit of different shapes derived from the triangle as the basic unit.

Further, the component angles in the modular units are determined according to the position of the steel structure grid tower where the modular units are located, and the specifications of the modular units on the same floor are the same;

Further, the cross-section of the modular unit member can adopt cross-section types such as round pipe, square pipe, rectangular pipe, and H-shaped steel.

Further, bolt holes are provided on the connectors at the vertices of the modular units.

Further, the apex connectors of the module units and the apex connectors of adjacent module units are connected into a whole by bolts to connect the connecting cover plate and each module connector to form a rigid node.

Furthermore, the components, connectors, and bolt holes of the modular unit are prefabricated in the factory and welded between them.

Further, the steel structure grid tower is provided with horizontal reinforcing rings at several positions such as the bottom, neck contraction position or top.

Further, the inner or outer surface of the steel grid tower is provided with a skin.

Further, the steel structure grid tower can be used in tower shapes such as straight cylinders, cones, hyperbolas, and other curves.

The present invention has the following beneficial effects:

1. Compared with the traditional reinforced concrete structure, its self-weight is only 15% to 20% of the reinforced concrete structure, which greatly reduces the self-weight of the structure, which can save the cost of foundation treatment and foundation, and the construction is not limited by seasons.

2. The modular units are prefabricated in the factory, and the site is only connected by bolts, which can avoid the residual deformation of the site welding, improve the installation accuracy and engineering quality; and the installation process is simple, safe, reliable, and fast, and the construction period is faster than that of the site-welded steel structure grid tower. Shortened by 25% to 35%.

3. The adoption of reasonable structural arrangement and node structure can make the module unit specifications as uniform as possible and easy to assemble, which facilitates the realization of standardized design, industrial production and assembly construction, and the cost after standardized production is lower.

Description of drawings

Figure 1. Axonometric schematic diagram of a straight cylindrical steel structure grid tower

Figure 2. Schematic diagram of the assembly of the structural unit of the straight cylindrical steel structure grid tower

Figure 3. Axonometric schematic diagram of straight conical steel grid tower

Figure 4. Schematic diagram of the assembly of the structural units of the straight conical steel structure grid tower

Figure 5. Axonometric schematic diagram of hyperbolic steel grid tower

Figure 6. Schematic diagram of the assembly of the structural units of the hyperbolic steel grid tower

Figure 7. Assembly details of the structural unit of the steel grid tower

Figure 8. Schematic diagram of a triangular module unit

Figure 9. Schematic diagram of a quadrilateral modular unit derived from a triangle

Figure 10. Schematic diagram of a hexagonal modular unit derived from a triangle

Figure 11. Schematic diagram of overall rigid connection nodes

Figure 12. Detailed view of module connectors

In the figure, 1-main body of the steel grid tower; 2-basic module unit; 3-connector; 4-member; 5-intermediate layer connection node; 6-horizontal reinforcement ring; -arc plate; 10-side sealing plate; 11-end sealing plate; 12-connector cover; 13-top node; 14-bottom node; 15-foundation embedded connector; 16-foundation.

Detailed ways

A specific implementation of a modular assembled steel grid tower proposed by the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be embodied in many different forms and uses, and should not be construed as being limited to the present exemplary embodiments.

As shown in accompanying drawings 1 and 2 and accompanying drawings 7 to 12 is Embodiment 1 of the present invention.

The invention proposes a modular assembled steel structure grid tower, which can be used for a straight steel structure grid tower. The components include: the main body of the straight cylindrical grid tower (1); the module unit (2); the connector (3); the component (4); the middle layer node (5); hole (8); arc plate (9); side sealing plate (10); end sealing plate (11); connector cover plate (12); top node (13); bottom node (14); foundation embedded Connector (15); Foundation (16).

As shown in accompanying drawings 1 and 2 and accompanying drawings 7 to 11, the straight cylindrical steel structure grid tower (1) is composed of a series of modular units (2) connected in the horizontal direction with bolts (7) to form a closed ring in sequence, and the upper The apex connectors (3) of one layer of modular units (2) are connected with the connectors (3) of the lower layer of modular units (2) through bolts (7), assembled vertically layer by layer; the module units (2) are three components (4) A triangular module unit formed with three connectors (3) or a quadrilateral or hexagonal module unit derived from a triangle as a basic unit; the member (4) is welded on the connector (3) at a certain angle; The angles of the modular unit components (4) are all the same, and the specifications of the modular units (2) on the same floor of the steel grid tower are the same; the modular units (2) are connected as a whole by bolts (7).

As shown in accompanying drawing 1, the said straight cylindrical steel structure grid tower (1) can be provided with horizontal reinforcing rings (6) at the bottom, in several positions in the middle, and at the top.

As shown in Figure 7, the apex of the modular unit (2) is connected to the foundation embedded connector (15) on the foundation (16) by bolts.

As shown in Figure 2 and Figures 7-11, the modular units are sequentially connected by bolts (7) in the horizontal direction to form a closed ring, and a V is formed at the connecting node (5) of the middle layer of the two modular units (2). Shaped rebate, put the apex connector (3) of the module unit (2) on the upper layer into the groove and connect it with the connector (3) and the connector cover (12) of the module unit (2) on the lower layer through bolts, repeat the above process , up to the top floor, the assembly of the straight steel structure grid tower is completed.

As shown in accompanying drawing 12, the connector (3) at the apex of the modular unit (2) is an arc-shaped steel plate (9), a side sealing plate (10), and an end sealing plate (11); the side sealing plate (10) and end sealing plate (11) exceed arc plate certain distance, and bolt hole (8) is set.

As shown in accompanying drawings 11 and 12, the triangular model unit (2) connects the arc-shaped steel plate (9) and its side sealing plate (10) and end plate (12) in the connecting piece through bolts (7). The head seal plate (11) is connected and assembled into a whole to form a rigid node.

As shown in accompanying drawings 7-10, the cross section of the member (4) can adopt round pipe, square pipe, rectangular pipe, H-shaped steel and other cross section types, not limited to the schematic cross section type in this embodiment.

The inner and outer surfaces of the steel structure grid tower (1) can be provided with inner and outer skins.

As shown in accompanying drawings 3 and 4 and accompanying drawings 7 to 12 are Embodiment 2 of the present invention.

The invention proposes a modular assembly type steel structure grid tower, which can be used for a straight cylindrical conical steel structure grid tower. The components include: a straight cylindrical conical grid tower main body (1); module units (2); connectors (3); components (4); intermediate layer nodes (5); horizontal reinforcing rings (6); Bolt hole (8); curved plate (9); side sealing plate (10); end sealing plate (11); connector cover plate (12); top node (13); bottom node (14); Buried connector (15); foundation (16).

As shown in accompanying drawings 3 and 4 and accompanying drawings 7 to 11, the straight cylindrical conical steel structure grid tower (1) is composed of a series of modular units (2) connected in turn by bolts (7) in the horizontal direction to form a closed ring, The apex connector (3) of the module unit (2) on the upper layer is connected with the connector (3) of the module unit (2) on the lower layer through bolts (7), assembled vertically layer by layer; the module unit (2) is three A triangular module unit composed of a member (4) and three connectors (3) or a quadrilateral or hexagonal module unit derived from a triangle as a basic unit; the member (4) is welded on the connector (3) at a certain angle ; The angles of the modular unit members (4) are the same in the range of conical and straight cylindrical shapes, and the modular units (2) on the same floor of the steel grid tower have the same specifications; the modular units (2) are connected by bolts ( 7) Connected into a whole.

As shown in accompanying drawing 3, the straight cylindrical conical steel structure grid tower (1) can be provided with horizontal reinforcement rings (6) at the bottom, variable cross-section, several positions in the middle, and the top.

All the other are the same as embodiment one.

Embodiment 3 of the present invention is shown in accompanying drawings 5 and 6 and accompanying drawings 7-12.

A modular assembly steel structure grid tower proposed by the invention can be used for a hyperbolic steel structure grid tower. The components include: a hyperbolic grid tower main body (1); module units (2); connectors (3); components (4); intermediate layer nodes (5); horizontal reinforcement rings (6); bolts (7); Bolt hole (8); curved plate (9); side sealing plate (10); end sealing plate (11); connector cover plate (12); top node (13); bottom node (14); Buried connector (15); foundation (16).

As shown in accompanying drawings 5 and 6 and accompanying drawings 7 to 11, the hyperbolic steel structure grid tower (1) consists of a series of modular units (2) which are sequentially connected in the horizontal direction with bolts (7) to form a closed ring, The apex connector (3) of the module unit (2) on the upper layer is connected with the connector (3) of the module unit (2) on the lower layer through bolts (7), assembled vertically layer by layer; the module unit (2) is three A triangular module unit composed of a member (4) and three connectors (3) or a quadrilateral or hexagonal module unit derived from a triangle as a basic unit; the member (4) is welded on the connector (3) at a certain angle ; The modular units (2) on the same floor of the steel grid tower have the same specifications; the modular units (2) are connected into a whole by bolts (7).

As shown in Figure 5, the straight cylindrical conical steel structure grid tower (1) can be provided with horizontal reinforcement rings (6) at the bottom, neck contraction position, and top. All the other are the same as embodiment one.

The invention greatly reduces the self-weight of the structure, saves the foundation treatment and the cost of the foundation, and the construction is not restricted by the season; the module units are only connected by bolts on the site, avoiding the residual deformation of the site welding, and improving the construction accuracy and quality; and the construction process Simple, safe, reliable, fast, and short construction period; the use of reasonable structural layout and node structure can make the modular unit specifications as uniform as possible and easy to assemble, which is convenient for standardized design, industrial production and assembly construction, and low cost.

The above embodiments are three applications of a modular assembled steel structure grid tower proposed by the present invention, and the present invention is also applicable to different shapes, cross-sectional members, connection node forms, etc. It should be understood that the present invention is not limited to the above embodiments, and various modifications conforming to the idea of the present invention are within the protection scope of the present invention.

Claims (6)

1. a kind of modular assembly formula steel construction lattice tower, which is characterized in that the steel construction lattice tower is by a series of triangles Or bolt is used to be in turn connected to form closure in the horizontal direction by other shapes modular unit derived from basic unit of triangle Ring, upper and lower layer modular unit are bolted, vertically assembly layer by layer；The modular unit is by three components by one Determine angle and connect composition triangular module unit with three connectors, or using triangle as quadrangle derived from basic unit or six The different shapes modular unit such as side shape.

2. a kind of modular assembly formula steel construction lattice tower according to claim 1, which is characterized in that the modular unit Close ring is in turn connected to form using bolt in the horizontal direction.

3. a kind of modular assembly formula steel construction lattice tower according to claim 1, which is characterized in that the modular unit Vertex is bolted with basic built-in connection or lower module unit connector, vertically assembles layer by layer.

4. a kind of modular assembly formula steel construction lattice tower according to claim 1, which is characterized in that the modular unit An entirety is bolted into vertex connector and adjacent modular units vertex connector, forms rigid joint.

5. a kind of modular assembly formula steel construction lattice tower according to claim 1, which is characterized in that the steel construction net If the horizontal reinforcing ring in arterial highway is arranged in different height in lattice tower.

6. a kind of modular assembly formula steel construction lattice tower according to claim 1, which is characterized in that the steel construction net Epidermis is arranged in lattice tower inner surface or outer surface.