CN110424808B - Skin construction method of steel structure indirect cooling tower - Google Patents
Skin construction method of steel structure indirect cooling tower Download PDFInfo
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- CN110424808B CN110424808B CN201910724343.5A CN201910724343A CN110424808B CN 110424808 B CN110424808 B CN 110424808B CN 201910724343 A CN201910724343 A CN 201910724343A CN 110424808 B CN110424808 B CN 110424808B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/34—Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
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Abstract
The invention provides a skin construction method of a steel structure indirect cooling tower, and belongs to the technical field of civil construction. The method comprises the following steps: assembling the steel member and the purline into a first unit plate; constructing a main steel structure of the indirect cooling tower by using the first unit plate; and mounting a skin on a main steel structure of the indirect cooling tower. According to the skin construction method of the steel structure indirect cooling tower provided by the embodiment of the invention, the main steel structure and the skin of the indirect cooling tower are separately constructed, so that the construction speed and the installation precision of the main steel structure can be improved, and the sealing performance of a skin system can be improved.
Description
Technical Field
The invention relates to the technical field of civil construction, in particular to a skin construction method of a steel structure indirect cooling tower.
Background
In the prior art, a skin construction method of a steel structure indirect cooling tower generally comprises the following steps: firstly, a main steel structure, purlins and most skin systems are assembled on the ground to form a hoisting unit, and then the hoisting unit is integrally installed at high altitude. Therefore, the construction can effectively reduce the workload of the aerial covering system.
However, in the construction method, the skin system and the main steel structure are installed at high altitude together, and the skin system and the main steel structure must be mutually restrained to generate certain influence on high altitude accurate positioning, so that if the sealing performance of the skin system is required to meet the construction requirement, the speed of installing the hoisting unit is slow. In addition, the skin system is usually repaired by hoisting a layer of hoisting units and then repairing the layer of skin system, so that the skin system cannot be maintained in a full period.
Disclosure of Invention
The invention provides a skin construction method of a steel structure indirect cooling tower, which aims to improve the construction speed of the indirect cooling tower and the sealing performance of a skin system and realize the full-period maintenance of the skin system of the indirect cooling tower.
In order to achieve the aim, the invention provides a skin construction method of a steel structure indirect cooling tower, which comprises the following steps:
assembling the steel member and the purline into a first unit plate;
constructing a main steel structure of the indirect cooling tower by using the first unit plate;
and mounting a skin on a main steel structure of the indirect cooling tower.
Optionally, the step of installing a skin on the main steel structure of the indirect cooling tower includes: and mounting a skin on the inner side and/or the outer side of the main steel structure of the indirect cooling tower.
Optionally, the step of installing a skin on the main steel structure of the indirect cooling tower includes: and mounting a skin on the inner side and/or the outer side of the main steel structure of the indirect cooling tower by using skin mounting equipment.
Optionally, the skin installation equipment comprises 2 annular rails, a steel framework, a construction hanging basket, a balancing weight, a steel wire rope, a hoist and an electrical control box;
the 2 annular tracks comprise a first annular track and a second annular track; the first annular guide rail is arranged at the top of the main steel structure of the indirect cooling tower, and the second annular rail is arranged on the topmost reinforcing ring of the main steel structure of the indirect cooling tower;
the steel framework is erected on the first annular track through a roller frame;
the construction hanging basket is positioned on the skin side, is connected to the steel framework through the steel wire rope and is lifted and lowered through the hoister and the electric control box;
the balancing weight is located at the lower end of the steel framework and located above the first annular track, so that the steel framework is not separated from the first annular track.
Optionally, the skin to be installed on the main steel structure of the indirect cooling tower is composed of second unit plates, and a slidable platform is arranged in the construction hanging basket and used for placing the second unit plates.
Optionally, at least one of the lower side, the left side and the right side of the slidable platform is provided with an adjusting unit for adjusting the position of the second unit plate.
Optionally, the adjusting unit is an adjusting screw.
Optionally, the first unit plate block is built through a crawler crane, a mobile tower crane and/or a fixed tower crane.
Optionally, the main steel structure of the indirect cooling tower comprises a conical section and a straight cylinder section, and a square frame in the vertical direction is arranged inside the conical section;
and the first unit plate block is built by using a construction lifter, and the construction lifter is attached to the straight cylinder section and the square frame.
According to the skin construction method of the steel structure indirect cooling tower provided by the embodiment of the invention, the main steel structure and the skin of the indirect cooling tower are separately constructed, so that the construction speed and the installation precision of the main steel structure can be improved, and the sealing performance of a skin system can be improved; in addition, the skin installation equipment designed by the method can realize the full-period maintenance of the indirect cooling tower skin system.
Drawings
FIG. 1 is a flow chart of a skin construction method of a steel structure indirect cooling tower provided by the embodiment of the invention;
FIG. 2 is a schematic diagram of a triangular configuration provided by an embodiment of the present invention;
fig. 3 is a schematic structural view of a first unit plate according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a configuration scheme of a construction machine for a conical section of an indirect cooling tower provided by an embodiment of the invention;
FIG. 5 is a schematic diagram of a configuration scheme of a construction machine for a conical section of an indirect cooling tower provided by an embodiment of the invention;
FIG. 6 is a schematic diagram of a configuration scheme of a construction machine for a conical section of an indirect cooling tower provided by an embodiment of the invention;
FIG. 7 is a schematic diagram of a configuration scheme of a construction machine for straight sections of an indirect cooling tower provided by an embodiment of the invention;
FIG. 8 is a schematic diagram of a configuration scheme of a construction machine for straight sections of an indirect cooling tower provided by an embodiment of the invention;
FIG. 9 is a schematic illustration of a construction hoist layout arrangement provided by an embodiment of the present invention;
FIG. 10 is a schematic illustration of a construction hoist layout according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of a construction basket in place during installation of top skin of an indirect cooling tower according to an embodiment of the invention;
FIG. 12 is a schematic diagram of a slidable platform in place during installation of top skin of an indirect cooling tower according to an embodiment of the invention;
FIG. 13 is a schematic diagram of a construction hanging basket in place during installation of a low-layer skin of an indirect cooling tower provided by an embodiment of the invention;
FIG. 14 is a schematic diagram of a slidable platform in place during installation of a low-layer skin of an indirect cooling tower provided by an embodiment of the invention.
[ reference numerals are described below ]:
1-a horizontal member; 2-an oblique member; 3-purlin; 4-an intercooling tower conical section; 5-a crawler crane; 6-a mobile tower crane; 7-orbit; 8-fixed tower crane; 9-straight section of indirect cooling tower; 10-attaching wall rods; 11-a construction hoist; 12-attaching a wall frame; 13-construction elevator standard section; 14-a square frame; 15-a first endless track; 16-a second endless track; 17-a steel framework; 18-construction basket; 19-a counterweight block; 20-a steel wire rope; 21-horizontal channel; 22-skin panel; 23-an intercooling tower reinforcing ring; 24-a slidable platform; 25-reinforcing ring lower stay bar.
Detailed Description
In order to make the objects, advantages and features of the present invention clearer, the skin construction method of the steel structure indirect cooling tower proposed by the present invention is further described in detail with reference to the accompanying drawings. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
The invention provides a skin construction method of a steel structure indirect cooling tower, which comprises the following steps as shown in figure 1:
s101: and assembling the steel members and the purlins into a first unit plate.
For example, as shown in fig. 2, 1 stable triangular configuration is formed with one horizontal member 1 and two diagonal members 2; purlins 3 are then installed in a triangular configuration, as shown in figure 3, to give a first unit panel block. Optionally, control point coordinates are established for the three main members and purlins 3 thereon according to the local coordinate system, an assembly jig frame of the first unit plate block is manufactured according to the control point coordinates, assembly and welding operations of the first unit plate block are performed on the jig frame, and the jig frame is withdrawn to a storage yard after the grids are closed by experience. The local coordinate system is a coordinate system corresponding to the first unit plate when the first unit plate is assembled.
S102: and (4) constructing a main steel structure of the indirect cooling tower by utilizing the first unit plate.
The main steel structure refers to the integral steel structure frame of the intercooling tower except the skin. In implementation, the first unit plate can be hung to the high altitude by depending on the construction machinery for high altitude installation. Optionally, the main steel structure of the indirect cooling tower is built according to the indirect cooling tower integral coordinate system, the high-altitude positioning measurement is based on the coordinates of each unit control point based on the indirect cooling tower integral coordinate system, and the control network points arranged on the inner side and the outer side of the indirect cooling tower directly measure and control the first unit plate through a total station. The high-altitude installation operation platform can adopt tool type hanging baskets, is firmly connected with the intercooling tower rod piece in modes such as a groove type structure and the like, does not need any additional electric welding operation, realizes the quick assembly and disassembly of the hanging baskets in each working procedure under each working condition, and effectively improves the construction progress and the construction quality.
S103: and mounting a skin on a main steel structure of the indirect cooling tower.
After the main steel structure of the indirect cooling tower is built, skin can be installed on the main steel structure, and the skin can be aluminum skin.
According to the skin construction method of the steel structure indirect cooling tower provided by the embodiment of the invention, the main steel structure and the skin of the indirect cooling tower are separately constructed, so that the construction speed and the installation precision of the main steel structure can be improved, and the sealing performance of the skin can be improved.
During specific construction, the height of the lower cone section of the main steel structure of the indirect cooling tower is about 50 meters, the whole diameter is large, a crawler crane 5, a mobile tower crane or a plurality of fixed tower cranes and the like can be used as main hoisting equipment, and the indirect cooling tower can be determined according to comprehensive comparison of plane and vertical surface arrangement, site conditions, local resource allocation, construction period, cost requirements and the like of the steel structure indirect cooling tower. The height of the straight cylinder section at the upper part of the indirect cooling tower reaches about 170 meters, two symmetrically arranged tower cranes can be used as main hoisting equipment, the tower cranes are connected with the indirect cooling tower with a steel structure through the wall-attached rods 10, and the arrangement of the relevant wall-attached rods 10, the design of connecting nodes, the checking calculation of the bearing capacity of the indirect cooling tower with the steel structure, the use performance of the tower cranes and the like are determined by combining computer simulation construction technology. After the construction of the main steel structure is completed and the skin installation construction equipment is installed, the tower crane can be dismantled, so that the use cost of the tower crane is reduced.
As shown in fig. 4, in an embodiment of the construction machine for the intercooling tower cone 4, a crawler crane 5 can be arranged on the inner side and the outer side of the intercooling tower cone 4.
As shown in fig. 5, for another scheme of the configuration of the construction machinery of the intercooling tower cone section 4, 2 mobile tower cranes 6 can be arranged on the inner side of the intercooling tower cone section 4, and the mobile tower cranes 6 can move through guide rails 7.
As shown in fig. 6, for another scheme of the construction machinery configuration of the intercooling tower cone section 4, 4 fixed tower cranes 8 can be arranged on the inner side of the intercooling tower cone section 4.
As shown in fig. 7, in an embodiment of a configuration of a construction machine for an indirect cooling tower straight- tube section 9, 2 symmetrical fixed tower cranes 8 may be arranged inside the indirect cooling tower straight-tube section 9. As shown in fig. 8, the stationary tower crane 8 may be connected to the intercooling tower cylindrical section 9 by a plurality of wall attaching rods 10 to reinforce the stationary tower crane 8.
Optionally, the construction hoist 11 may be used as a vertical passage for a constructor to go up and down the indirect cooling tower, as shown in fig. 9 and 10, the construction hoist 11 is built up through a construction hoist standard knot 13, at the indirect cooling tower conical section 4, the construction hoist 11 is attached to a square frame 14 through the construction hoist 11 and a wall attaching frame 12, the square frame 14 may be made of a tower crane body, and the top of the square frame 14 is connected with a main steel structure of the indirect cooling tower to ensure stability; in the straight cylinder section 9 of the indirect cooling tower, a construction hoist 11 is directly attached to a main steel structure of the indirect cooling tower, a cantilever platform is arranged by depending on the main steel structure of the indirect cooling tower to serve as a construction hoist 11 landing, and one landing is arranged on each layer of the indirect cooling tower structure. After the main structure is constructed, the construction hoist 11 can be removed. Paving a walkway plate on a horizontal rod of the indirect cooling tower, welding angle irons on the inner side and the outer side of the horizontal rod, and pulling a safety rope to be used as an outer side rail to form a horizontal channel 21 of the indirect cooling tower.
The skin is mainly composed of the second unit plate block, and the second unit plate block can be made of aluminum skin. The specification of the ground skin assembly, namely the specification of the second unit plate block can be set according to the convenience requirements of ground assembly and high-altitude installation operation. Generally demarcating the flexible deformation zone; manufacturing a skin ground assembling jig frame according to a design drawing, assembling a ground second unit plate according to the assembling jig frame, and withdrawing the jig frame to a storage yard after all parts are assembled and accepted.
Alternatively, the construction worker may rely on the construction cradle 18 to perform aerial installation of the second unit panel. The construction basket 18 may be provided with a plurality of work platforms in the height direction, so that the operator can meet the requirements of the second unit plate for the whole area work by standing on the work platforms with different heights. A slidable platform 24 may be provided in the construction basket 18, and the second unit plate is placed on the slidable platform 24 on the ground. After the construction hanging basket 18 reaches the operation layer, the slidable platform 24 is pushed out towards the side of the indirect cooling tower, so that the second unit plate is tightly attached to the purline 3. At least one of the lower part, the left side and the right side of the slidable platform 24 is provided with an adjusting unit for adjusting the position of the second unit plate, the adjusting unit can be an adjusting screw rod or an adjusting buckle, and the like, and the second unit plate is accurately positioned in the height direction by screwing in or withdrawing the screw rod; adjusting screws can be arranged on the left side and the right side of the slidable platform 24, and the second unit plate can be accurately positioned in the horizontal direction in a screw pushing mode. After the second unit plate is accurately positioned, a constructor stands on an operation platform of the construction hanging basket 18 to connect the skin with the purline 3 by driving a self-tapping screw and the like. Constructors stand on the working platform of the construction hanging basket 18 and the main structure of the indirect cooling tower, and joints at the periphery of the skin are connected through bolts.
By using the construction hanging basket 18 and the permanent upper tower ladder stand as vertical passages for constructors to go up and down the intercooling tower, the operators on the side of the main structure of the intercooling tower can reach an operation layer through the upper tower ladder stand or the construction hanging basket 18 combined with the upper tower ladder stand, and the operators on the side of the skin can reach the operation layer through the construction hanging basket 18. Pavement boards are laid on the horizontal rods of the indirect cooling tower, aluminum skins are used as inner side railings, angle irons are welded on the outer sides of the horizontal rods, safety ropes are pulled to serve as outer side railings, and the indirect cooling tower horizontal channel 21 is formed.
Optionally, a skin is installed on the inner side and/or the outer side of the main steel structure of the indirect cooling tower. When the skins are installed, sequential construction from top to bottom or from bottom to top can be determined according to the overlapping relation of the skins, and the next layer of skin can directly cover the previous layer of skin. Optionally, as shown in fig. 11, the skin installation construction equipment mainly includes 2 circular rails 7, a steel framework 17, a construction basket 18, a counterweight 19, a steel wire rope 20, a hoist, an electrical control box, and the like; a horizontal channel 21 is arranged on the side wall of the indirect cooling tower and the indirect cooling tower reinforcing ring 23; the lower side of the indirect cooling tower reinforcing ring is provided with a reinforcing ring lower stay bar 25. The 2 annular rails comprise a first annular rail and a second annular rail, the first annular rail 15 is arranged at the top of a main steel structure of the indirect cooling tower, and the second annular rail 16 is arranged on a topmost reinforcing ring of the main steel structure of the indirect cooling tower; the steel framework 17 is erected on the first annular track 15 through a roller frame; the construction hanging basket 18 is positioned on the skin side, the construction hanging basket 18 is connected to the steel framework 17 through a steel wire rope 20, and the lifting and the descending are realized through a lifter and an electric control box; the weight 19 is located at the lower end of the steel frame 17 and above the first endless track 15 so that the steel frame does not separate from the first endless track 15.
Optionally, the skin installation construction equipment can be used as permanent equipment to realize full life cycle maintenance of the skin and ensure the performance of each stage during the use period of the indirect cooling tower.
As shown in fig. 12, the displaceable platform 24 can accurately push the second unit panel onto the purlin 3.
As shown in fig. 13, after the skin of the previous layer is installed, the height of the construction basket 18 can be lowered; the skiddable platform 24 is then moved to push the second panel unit, the skin panel 22, onto the purlin 3 for installation, as shown in fig. 14.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the claims of the present invention.
Claims (6)
1. The skin construction method of the steel structure indirect cooling tower is characterized by comprising the following steps:
assembling the steel member and the purline into a first unit plate;
constructing a main steel structure of the indirect cooling tower by using the first unit plate;
mounting a skin on a main steel structure of the indirect cooling tower;
the step of installing the skin on the main steel structure of the indirect cooling tower comprises the following steps: mounting a skin on the inner side and/or the outer side of the main steel structure of the indirect cooling tower by using skin mounting equipment;
the skin mounting equipment comprises 2 annular rails, a steel framework, a construction hanging basket, a balancing weight, a steel wire rope, a lifter and an electric control box;
the 2 annular tracks comprise a first annular track and a second annular track; the first annular guide rail is arranged at the top of the main steel structure of the indirect cooling tower, and the second annular rail is arranged on the topmost reinforcing ring of the main steel structure of the indirect cooling tower;
the steel framework is erected on the first annular track through a roller frame;
the construction hanging basket is positioned on the skin side, is connected to the steel framework through the steel wire rope and is lifted and lowered through the hoister and the electric control box;
the balancing weight is located at the lower end of the steel framework and located above the first annular track, so that the steel framework is not separated from the first annular track.
2. The skin construction method of the steel structure intercooling tower of claim 1, wherein the skin to be installed on the main steel structure of the intercooling tower is composed of the second unit plate, and the construction basket is provided with a slidable platform for placing the second unit plate.
3. The skin construction method of the steel structure intercooling tower of claim 2, wherein at least one of the lower side, the left side and the right side of the slidable platform is provided with an adjusting unit for adjusting the position of the second unit plate.
4. The skin construction method of the steel structure indirect cooling tower, according to claim 3, characterized in that the adjusting unit is an adjusting screw.
5. The skin construction method of the steel structure indirect cooling tower of claim 1, wherein the first unit plate block is built by a crawler crane, a mobile tower crane and/or a fixed tower crane.
6. The skin construction method of the steel structure indirect cooling tower, according to claim 5, is characterized in that a main steel structure of the indirect cooling tower comprises a conical section and a straight cylinder section, and a vertical square frame is arranged inside the conical section;
and the first unit plate block is built by using a construction lifter, and the construction lifter is attached to the straight cylinder section and the square frame.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910724343.5A CN110424808B (en) | 2019-08-07 | 2019-08-07 | Skin construction method of steel structure indirect cooling tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910724343.5A CN110424808B (en) | 2019-08-07 | 2019-08-07 | Skin construction method of steel structure indirect cooling tower |
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| CN110424808A CN110424808A (en) | 2019-11-08 |
| CN110424808B true CN110424808B (en) | 2021-06-18 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113250499B (en) * | 2021-05-11 | 2023-01-10 | 自然资源部天津海水淡化与综合利用研究所 | Ultra-large natural ventilation seawater cooling tower shell and construction method |
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| DE2311183A1 (en) * | 1973-03-07 | 1974-09-12 | Ingenieur Buero Prof Dr Ing Ha | SHELL SUPPORT FOR THE PRODUCTION OF HYPERBOLIC ROTARY SHELLS, IN PARTICULAR FOR COOLING TOWERS |
| SU750032A1 (en) * | 1978-03-21 | 1980-07-23 | Грузинский научно-исследовательский институт энергетики и гидротехнических сооружений | Prefabricated tower structure |
| US5203134A (en) * | 1991-09-12 | 1993-04-20 | Skyline Displays, Inc. | Pivotal frame connector |
| GB2337060A (en) * | 1998-05-07 | 1999-11-10 | Francis Quinlan | Insulated support bar for double skin walls and roofs |
| US20060213145A1 (en) * | 2005-03-22 | 2006-09-28 | Haller Mark E | Lattice-skin hybrid tower |
| CN102535844B (en) * | 2012-02-10 | 2014-03-26 | 中国建筑第八工程局有限公司 | Construction method for spherical curved surface stainless steel curtain wall |
| CN202755635U (en) * | 2012-08-08 | 2013-02-27 | 中国核工业华兴建设有限公司 | Movable-type basket support |
| CN103343602B (en) * | 2013-07-17 | 2015-05-06 | 江苏永泰建造工程有限公司 | Installation structure of architectural decoration curved surface aluminum honeycomb board |
| CN103924802B (en) * | 2014-04-16 | 2016-02-10 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of large-scale straight tube cone segment type steel structure cooling tower |
| CN204983613U (en) * | 2015-08-05 | 2016-01-20 | 中建一局集团第二建筑有限公司 | Hoist and mount system of cell board curtain installation |
| CN105257032B (en) * | 2015-09-24 | 2018-02-02 | 中国能源建设集团广东省电力设计研究院有限公司 | Large-scale main cylinder floor steel structure cooling tower |
| CN105804447A (en) * | 2016-03-29 | 2016-07-27 | 哈尔滨工业大学空间钢结构幕墙有限公司 | Spoke type steel structure cooling tower |
| CN205894770U (en) * | 2016-06-28 | 2017-01-18 | 中国电力工程顾问集团中南电力设计院有限公司 | Steel construction cooling tower that intersects truss pattern |
| CN205955307U (en) * | 2016-08-23 | 2017-02-15 | 中国五洲工程设计集团有限公司 | Steel construction hyperbolic cooling tower |
| CN106759883B (en) * | 2016-11-30 | 2019-05-24 | 上海市机械施工集团有限公司 | The tower crane construction method of large-scale steel structure air cooling tower |
| CN107795112B (en) * | 2017-10-21 | 2019-03-05 | 成都华阳建筑股份有限公司 | A kind of high maneuverability external wall aerial work platform structure |
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