CN113668393A - Method for quickly installing cable tower steel bar hook bar - Google Patents
Method for quickly installing cable tower steel bar hook bar Download PDFInfo
- Publication number
- CN113668393A CN113668393A CN202110934789.8A CN202110934789A CN113668393A CN 113668393 A CN113668393 A CN 113668393A CN 202110934789 A CN202110934789 A CN 202110934789A CN 113668393 A CN113668393 A CN 113668393A
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- hook
- traction rope
- constructor
- hanging basket
- rib
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a method for quickly installing a cable tower steel bar hook bar, which is characterized in that a light hanging basket is manufactured in advance, a support rod is arranged on an upper platform of a hydraulic climbing formwork, a fixed pulley is arranged at the upper end of the support rod, a main traction rope is wound around the fixed pulley, and an auxiliary traction rope is prepared; hanging the cradle on the circumferential ribs of the cable tower steel bars, connecting one end of a main traction rope with a hook end of a hook rib to be installed, pulling the other end of the main traction rope by a constructor to lift the hook rib upwards, connecting one end of an auxiliary traction rope with a straight end of the hook rib by another constructor, and then assisting the other end of the traction rope by the constructor on the cradle; through main haulage rope and supplementary haulage rope mutually supporting, will treat that the couple muscle promotes to mounting height, and the constructor on hanging the basket installs the couple muscle in place. The invention can be installed by 3 people, has high construction efficiency and has no damage to the cable tower steel bars.
Description
Technical Field
The invention belongs to the technical field of suspension bridge or cable-stayed bridge construction, relates to cable tower construction of a suspension bridge or cable-stayed bridge, and particularly relates to a quick installation method of a cable tower reinforcing steel bar hook bar.
Background
As shown in fig. 1, the cable tower steel reinforcement framework of the suspension bridge or the cable-stayed bridge comprises at least two vertical main reinforcements 1, a plurality of layers of circumferential stirrups 2 are arranged on each layer of main reinforcement, and a layer of horizontally arranged drag hook reinforcement 3 is bound between the circumferential reinforcements at certain intervals to form a space grid structure.
The cable tower is usually constructed by hydraulic creeping formwork in sections, the height of each section is about 6 meters, and an upper platform 4 of the hydraulic creeping formwork is flush with the bottom of the construction section. When installing cable tower hook rib 3, constructor is under construction on creeping formwork upper mounting plate 4, and the height that artifical can generally is no longer than 2 meters, and the hook rib of height more than 2 meters is usually to weld interim platform 5 on the cable tower reinforcing bar that the ligature is good, and constructor carries out the hook rib installation on interim platform, and the gas cutting of interim platform is demolishd after the construction is accomplished. The temporary welding and cutting platform can damage the installed steel bars to a certain degree; and need weld a temporary platform on the reinforcing bar every 2 meters, not only the efficiency of construction is low, still causes a large amount of material losses.
Disclosure of Invention
The invention aims to solve the problems and provides a method for quickly installing a cable tower reinforcing steel bar hook pulling bar, a temporary platform does not need to be welded on the cable tower reinforcing steel bar, the construction efficiency is improved, and the cable tower reinforcing steel bar is prevented from being damaged.
The technical scheme of the invention is as follows:
a method for quickly installing a steel bar hook bar of a cable tower is characterized by comprising the following steps of:
(1) a construction hanging basket is manufactured in advance, and at least two hooks are arranged at the top of one side of the hanging basket;
(2) a supporting rod is arranged on the upper platform of the hydraulic climbing formwork, the height of the supporting rod is not less than that of the single-section tower column, the lower end of the supporting rod is fixed on the upper platform of the hydraulic climbing formwork, a fixed pulley is arranged at the upper end of the supporting rod, a main traction rope is wound around the fixed pulley, and the length of the main traction rope is not less than 2 times of the height of the supporting rod; preparing an auxiliary traction rope with the length not less than the height of the single-section tower column;
(3) firstly, installing a pull hook rib of a cable tower steel bar on an upper platform of a hydraulic climbing formwork by a constructor, after the construction exceeds the manually accessible height, hoisting a hanging basket to a certain height by a crane, and hanging the hanging basket on a circumferential rib of the cable tower steel bar through a hook; a constructor enters the hanging basket to prepare for installing the hook ribs at the higher layer;
(4) connecting one end of a main traction rope with a hook end of a hook rib to be installed, then drawing the other end of the main traction rope by a constructor to lift the hook rib upwards, simultaneously connecting one end of an auxiliary traction rope with a straight end of the hook rib by another constructor, and then assisting the other end of the traction rope by the constructor on a hanging basket; the main traction rope and the auxiliary traction rope are matched with each other, so that the to-be-hooked rib is lifted to the installation height and is adjusted to be in a horizontal state;
(5) a constructor on the hanging basket holds the hook rib by hand, loosens the auxiliary traction rope, installs the hook rib in place, then loosens the connection between the main traction rope and the hook rib bent end, and installs the next hook rib according to the method in the step (4);
(6) after the hook is installed at the upper limit of the height which can be reached on the hanging basket, the hanging basket is lifted upwards for a certain height by a crane, and then the installation of the hook ribs at the higher layer is carried out according to the steps (4) to (5).
The invention has convenient operation, high construction efficiency and less labor investment, can finish the installation operation by 3 persons, has no damage to the cable tower steel bar, and solves the difficult problem of the installation and construction of the drag hook steel bar at the bottom of the tower column by more than 2 meters.
Drawings
FIG. 1 is a schematic view of a temporary platform for installing a steel bar hook bar of a cable tower;
FIG. 2 is a schematic view of a hanging basket and a support rod structure used in the present invention;
FIG. 3 is a schematic view of the present invention in a state where the main traction rope is used to lift the hanger bar;
FIG. 4 is a schematic view of the main pull rope and the auxiliary pull rope cooperating to lift the hook bar;
FIG. 5 is a schematic view of the present invention lifting the hanger bar to a mounting height and adjusting it to a level condition;
FIG. 6 is a schematic view of the present invention mounting hanger bars on a hanging basket;
fig. 7 is a schematic diagram of the state that the hanging basket is lifted and the high-level hook rib is installed.
Detailed Description
The invention is suitable for the precondition that the cable tower adopts the hydraulic creeping formwork to carry out construction by sections, and the height of a single section of tower column exceeds 2 m; the main reinforcement and the circumferential reinforcement of the cable tower are installed; before concrete construction, the pull hook ribs of the cable tower reinforcing steel bars need to be installed, and constructors can not install the high-rise pull hook ribs of the cable tower reinforcing steel bars when standing on a climbing formwork upper platform.
The concrete construction steps of the invention are as follows:
(1) as shown in fig. 2, a construction hanging basket 6 is prefabricated, and at least two hooks 7 are arranged at the top of one side of the hanging basket. The hanging basket is a light hanging basket welded by steel bars or angle steels, and can accommodate one person to construct in the hanging basket; the hook is used for hanging the hanging basket on the circumferential rib of the cable tower.
(2) A supporting rod 8 is arranged on the hydraulic climbing formwork upper platform, the height of the supporting rod is not less than that of the single-section tower column, the lower end of the supporting rod is fixed on the hydraulic climbing formwork upper platform 4, a fixed pulley 9 is arranged at the upper end of the supporting rod, a main traction rope 10 is wound around the fixed pulley 9, and the length of the main traction rope 10 is not less than 2 times of the height of the supporting rod; and preparing an auxiliary traction rope with the length not less than the height of the single-section tower column.
When the invention is implemented, the supporting rod 8 can be fixed on the climbing formwork upper platform 4 in the following way: a steel plate is adopted as a bottom plate 11, a steel sleeve 12 vertical to the surface of the bottom plate is welded in the middle of the top surface of the bottom plate, the bottom plate is connected with an upper platform of the hydraulic creeping formwork through bolts or is welded and fixed temporarily, and the lower end of a support rod 8 is inserted into the sleeve 12.
An ear plate 13 is welded on the outer wall of the upper end of the supporting rod, and a fixed pulley 9 is hung through the ear plate.
(3) As shown in fig. 3, 4 and 5, a constructor firstly installs the pull hook ribs at the lower layer of the cable tower steel bars on the hydraulic climbing formwork upper platform 4, lifts the hanging basket 6 to a certain height by a crane after the construction reaches a height higher than the manually reachable height, and hangs the hanging basket on the annular ribs 2 of the cable tower steel bars through the hooks; a constructor enters the hanging basket to prepare for installing the hook ribs at the higher layer;
(4) connecting one end of a main traction rope 10 with a hook end of a hook rib 3 to be installed, then pulling the other end of the main traction rope by a constructor to lift the hook rib upwards, simultaneously connecting one end of an auxiliary traction rope 14 with a straight end of the hook rib 3 by another constructor, and then pulling the other end of the auxiliary traction rope 14 by the constructor on the hanging basket; the main traction rope 10 and the auxiliary traction rope 14 are matched with each other, so that the rib 3 to be hooked is lifted to the installation height and is adjusted to be in a horizontal state;
(5) as shown in fig. 6, a constructor on the hanging basket holds the hook rib by hand, loosens the connection between the auxiliary traction rope and the hook rib, installs the hook rib 3 in place, then loosens the connection between the main traction rope and the hook end of the hook rib, and installs the next hook rib according to the method of step (4);
(6) after the upper limit of the height which can be reached by the constructor on the cradle is installed, the cradle 6 is lifted upwards by a certain height by a crane, and then the installation of the hook ribs 3 at the higher layer is carried out according to the steps (4) to (5), as shown in fig. 7.
Claims (2)
1. A method for quickly installing a steel bar hook bar of a cable tower is characterized by comprising the following steps of:
(1) a construction hanging basket is manufactured in advance, and at least two hooks are arranged at the top of one side of the hanging basket;
(2) a supporting rod is arranged on the upper platform of the hydraulic climbing formwork, the height of the supporting rod is not less than that of the single-section tower column, the lower end of the supporting rod is fixed on the upper platform of the hydraulic climbing formwork, a fixed pulley is arranged at the upper end of the supporting rod, a main traction rope is wound around the fixed pulley, and the length of the main traction rope is not less than 2 times of the height of the supporting rod; preparing an auxiliary traction rope with the length not less than the height of the single-section tower column;
(3) firstly, installing a pull hook rib of a cable tower steel bar on an upper platform of a hydraulic climbing formwork by a constructor, after the construction exceeds the manually accessible height, hoisting a hanging basket to a certain height by a crane, and hanging the hanging basket on a circumferential rib of the cable tower steel bar through a hook; a constructor enters the hanging basket to prepare for installing the hook ribs at the higher layer;
(4) connecting one end of a main traction rope with a hook end of a hook rib to be installed, then drawing the other end of the main traction rope by a constructor to lift the hook rib upwards, simultaneously connecting one end of an auxiliary traction rope with a straight end of the hook rib by another constructor, and then assisting the other end of the traction rope by the constructor on a hanging basket; the main traction rope and the auxiliary traction rope are matched with each other, so that the to-be-hooked rib is lifted to the installation height and is adjusted to be in a horizontal state;
(5) a constructor on the hanging basket holds the hook rib by hand, loosens the auxiliary traction rope, installs the hook rib in place, then loosens the connection between the main traction rope and the hook rib bent end, and installs the next hook rib according to the method in the step (4);
(6) after the hook is installed at the upper limit of the height which can be reached on the hanging basket, the hanging basket is lifted upwards for a certain height by a crane, and then the installation of the hook ribs at the higher layer is carried out according to the steps (4) to (5).
2. The method for quickly installing the cable tower steel bar stay hook bar according to claim 1, wherein the method comprises the following steps: the fixing mode of the support rod on the hydraulic climbing formwork upper platform is as follows: a steel plate is used as a bottom plate, a sleeve is welded in the middle of the top surface of the bottom plate, the bottom plate is connected with the hydraulic creeping formwork upper platform through bolts or is welded and fixed temporarily, and the lower end of a support rod is inserted into the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110934789.8A CN113668393A (en) | 2021-08-16 | 2021-08-16 | Method for quickly installing cable tower steel bar hook bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110934789.8A CN113668393A (en) | 2021-08-16 | 2021-08-16 | Method for quickly installing cable tower steel bar hook bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113668393A true CN113668393A (en) | 2021-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110934789.8A Pending CN113668393A (en) | 2021-08-16 | 2021-08-16 | Method for quickly installing cable tower steel bar hook bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113668393A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09310492A (en) * | 1996-05-22 | 1997-12-02 | Hirose & Co Ltd | Self elevating type form device and elevating method thereof |
| CN101994292A (en) * | 2010-03-05 | 2011-03-30 | 安通建设有限公司 | Rapid construction of high bridge pier by efficient combination |
| CN202788001U (en) * | 2012-07-29 | 2013-03-13 | 山西四建集团有限公司 | Column stirrup binding operation support |
| CN104775364A (en) * | 2015-02-13 | 2015-07-15 | 中交路桥华南工程有限公司 | Method for mounting reinforcing steel bars of tower columns of cable-stayed bridge towers |
| CN206143633U (en) * | 2016-09-28 | 2017-05-03 | 中交第二航务工程局有限公司 | Ligature platform of simple and easy high mound steel reinforcement cage |
| CN108383015A (en) * | 2018-03-15 | 2018-08-10 | 广厦建设集团有限责任公司 | A kind of Super High creeping formwork auxiliary hoisting device |
| CN111379227A (en) * | 2020-04-17 | 2020-07-07 | 中国葛洲坝集团路桥工程有限公司 | Variable-width platform device for hydraulic creeping formwork for quickly constructing double-limb cable tower and construction method |
| CN213448107U (en) * | 2020-08-12 | 2021-06-15 | 核工业长沙中南建设工程集团公司 | High mound construction reinforcement safety protection handling frame |
-
2021
- 2021-08-16 CN CN202110934789.8A patent/CN113668393A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09310492A (en) * | 1996-05-22 | 1997-12-02 | Hirose & Co Ltd | Self elevating type form device and elevating method thereof |
| CN101994292A (en) * | 2010-03-05 | 2011-03-30 | 安通建设有限公司 | Rapid construction of high bridge pier by efficient combination |
| CN202788001U (en) * | 2012-07-29 | 2013-03-13 | 山西四建集团有限公司 | Column stirrup binding operation support |
| CN104775364A (en) * | 2015-02-13 | 2015-07-15 | 中交路桥华南工程有限公司 | Method for mounting reinforcing steel bars of tower columns of cable-stayed bridge towers |
| CN206143633U (en) * | 2016-09-28 | 2017-05-03 | 中交第二航务工程局有限公司 | Ligature platform of simple and easy high mound steel reinforcement cage |
| CN108383015A (en) * | 2018-03-15 | 2018-08-10 | 广厦建设集团有限责任公司 | A kind of Super High creeping formwork auxiliary hoisting device |
| CN111379227A (en) * | 2020-04-17 | 2020-07-07 | 中国葛洲坝集团路桥工程有限公司 | Variable-width platform device for hydraulic creeping formwork for quickly constructing double-limb cable tower and construction method |
| CN213448107U (en) * | 2020-08-12 | 2021-06-15 | 核工业长沙中南建设工程集团公司 | High mound construction reinforcement safety protection handling frame |
Non-Patent Citations (1)
| Title |
|---|
| 蒋本俊: "武汉天兴洲公铁两用长江大桥斜拉桥主塔施工技术", 《桥梁建设》 * |
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Application publication date: 20211119 |