CN105755959A - Auxiliary bracket system suitable for construction of cable towers with different sections and building method - Google Patents
Auxiliary bracket system suitable for construction of cable towers with different sections and building method Download PDFInfo
- Publication number
- CN105755959A CN105755959A CN201610138193.6A CN201610138193A CN105755959A CN 105755959 A CN105755959 A CN 105755959A CN 201610138193 A CN201610138193 A CN 201610138193A CN 105755959 A CN105755959 A CN 105755959A
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- climbing frame
- frame
- sarasota
- climbing
- steel
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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
-
- 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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to an auxiliary bracket system suitable for construction of cable towers with different sections and a building method. The system comprises four steel tubes, three layers of climbing frames, lifting frames, hoops, chain blocks and safety wire ropes, wherein the four steel tubes are fixed on the periphery of the cable tower respectively, can be lengthened vertically to be used as guide rails for fixing and climbing the climbing frames and the lifting frame; the three layers of climbing frames are fixed on the four steel tubes; each layer of climbing frame is distributed along the circumference direction of the cable tower to surround the cable tower therein; ifting frames are fixed on the four steel tubes, are distributed along the circumference direction of the cable tower to surround the cable tower therein and are located above the top layer of climbing frame; the hoops are arranged on the steel tubes and are used for supporting the climbing frame or the lifting frame; the chain blocks are connected between two adjacent layers of climbing frames or connected between the climbing frame and the lifting frame; and the safety wire ropes are connected between the two adjacent layers of climbing frames or connected between the climbing frame and the lifting frame. Compared with the prior art, the auxiliary bracket system has the advantages that the construction process can be simplified; and the construction risk is lowered.
Description
Technical field
The present invention relates to a kind of Sarasota construction method, especially relate to a kind of Sarasota construction auxiliary stand system suitable in different cross section shape and building method, belong to field of bridge construction.
Background technology
Domestic at present carry out Sarasota construction frequently with overmolded technique and mould crawling process.Wherein over-form construction is above sections Sarasota epimerite template as fixed knot and load part, installs the template that sections removes and constructs, need to additionally set up scaffold as operation platform；Creeping formwork is made up of jumping formwork, climbing frame and climbing equipment, is watering the pre-buried track shear key of sections, constructs along track hydraulic lifting section by section, can save the external scaffolding in work progress at scaffold cradle in the template climbed.
Current domestic conventional Sarasota construction auxiliary stand has scaffold, creeping formwork support.Scaffold is to adopt steel pipe, scaffold board etc. successively to set up to form, and due to the restriction of scaffolding height, if need to use conversion platform segmented-erection and dismounting when being used for high tower, work high above the ground governing factor is many, and construction safety risk is big.Creeping formwork support is using hydraulic climbing shuttering as support, with jumping formwork Synchronous lifting, if but be used for the Sarasota that cross section is changeable, track is pre-buried, installation accuracy is poor, and difficulty of construction is big.
The Chinese patent that publication number is CN103898836A discloses a kind of cable-stayed bridge H type Sarasota height entablature steel battered leg prestress stent construction method, for field of bridge construction, it adopts steel battered leg bracket and bow member to crossbeam of constructing, avoid installation and the dismounting of a large amount of steel pipe supports of high trestle method construction in prior art, decrease installation and the later stage patch work of built-in fitting during Sarasota construction, reduce overhead welding workload and material, greatly reduce work high above the ground risk, also evaded the reserved decrement of high trestle simultaneously and pre-buried calf support camber arranges the problems such as difficulty；Steel battered leg bracket stress is clear and definite, and vertical load is passed to Sarasota by upper node, and the prestressing force that on lower node, the oblique horizontally outward component exerted oneself is previously applied by inter-tie place prestress wire is offset, and on lower node, the oblique vertical force component exerted oneself is born by Sarasota.Additionally, Sarasota and the asynchronous construction of crossbeam, it is to avoid the template of crossbeam side construction Sarasota and the high-altitude dismantling of climbing frame and installation, reduce security risk, shorten the duration.But above-mentioned construction method is only applicable to cable-stayed bridge H type Sarasota, and the Sarasota for other cross sectional shapes is constructed and inapplicable.
Summary of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and provide a kind of and simplify work progress, the Sarasota construction auxiliary stand system being applicable to different cross section reducing construction risk and building method.
The purpose of the present invention can be achieved through the following technical solutions:
Suitable in the Sarasota construction auxiliary stand system of different cross section, this system includes:
Steel pipe: be provided with four, be separately fixed at around Sarasota, and can vertical extension, as the guide rail that climbing frame, hoisting frame are fixed and climbed；
Climbing frame: be provided with three layers, is fixed on four steel pipes, and each layer of climbing frame is all laid along Sarasota circumference, in being enclosed in by Sarasota；
Hoisting frame: be fixed on four steel pipes, lays along Sarasota circumference, in being enclosed in by Sarasota, and is positioned at the top of the superiors' climbing frame；
Anchor ear: be located on steel pipe, is used for supporting climbing frame or hoisting frame；
Chain block: be connected between adjacent two layers climbing frame, or be connected between climbing frame and hoisting frame；
Insurance steel cable: be connected between adjacent two layers climbing frame, or be connected between climbing frame and hoisting frame.
Further, the climbing frame of the superiors and the climbing frame in intermediate layer connect into entirety by truss.
Further, section steel platform is set between undermost climbing frame and Sarasota and carries out closing of revealing all the details.
Further, also include being arranged between adjacent two layers climbing frame or be arranged on the adjustable ladder between climbing frame and hoisting frame.
Further, described climbing frame includes main frame body and guardrail, and guardrail is located on main frame body；Being provided with cat ladder passage in climbing frame, it is totally-enclosed that climbing frame surrounding arranges steel wire.
Further, the platform of described hoisting frame and guardrail adopt wire gauze to close.
Further, weld 4 reinforcing bars in the bottom of anchor ear along steel pipe walls to support as insurance.
Suitable in the building method of the Sarasota construction auxiliary stand system of different cross section, comprise the following steps:
A) by the built-in fitting on cushion cap, four steel pipes as whole auxiliary stand guide rail are installed；
B) installing bottom layer climbing frame: first install 4 anchor ears on steel pipe, to be locked at anchor ear on steel pipe as support, the climbing frame of piecemeal installing bottom layer, in like manner installs all the other 2 layers of climbing frame and hoisting frames from lower to upper；
C) respectively between adjacent two layers climbing frame, and hang chain block between climbing frame and hoisting frame as promoting power set, and connect insurance steel cable；
D) after completing the Sarasota construction of a sections, 4 steel pipes of spreading, tower crane is utilized to promote the height of one cable tower segment of hoisting frame, the climbing frame of the superiors is hung over by chain block and promotes on hoisting frame, the climbing frame of lower floor is hung over by chain block and promotes on adjacent upper climbing frame, and adjust anchor ear position and make anchor ear be locked on steel pipe and be supported on below climbing frame or the hoisting frame of new high degree, complete an operation circulation.
Being linked to be entirety by sway bracing pipe between 4 steel pipes, steel pipe arranges one cross pipe along every 24 meters of short transverse, and steel pipe arranges, every 6 meters, the attached wall part fixing to be connected with Sarasota together along short transverse simultaneously；During connected two steel-pipe weldings, coupling full weld, and outside coupling, weld stiffened steel plates.
Compared with prior art, the present invention has the following advantages and beneficial effect:
1, auxiliary stand system of the present invention can be applicable to the Tasso of variable cross-section or variable diameters, the construction of whole Tasso different cross section sections only namely can be completed by this auxiliary stand system, auxiliary stand need not be overlapped more, therefore construct convenient, save simultaneously and install and the operating time, additionally it is possible to reduce the cost of manufacture of auxiliary stand.
2, auxiliary stand of the present invention is mainly by can the steel pipe of vertical extension, hoisting frame, climbing frame, chain block, insurance steel cable and anchor ear etc. form, structure arranges simply, and in build process, tower crane is adopted to promote the height of one cable tower segment of hoisting frame, climbing frame is hung over by chain block and promotes on hoisting frame, therefore promote conveniently up and down, realize the support to hoisting frame or climbing frame by locking anchor ear, easy to operate.
3, levels cat ladder passage is set in climbing frame, and adjustable ladder is set between adjacent two layers climbing frame or between climbing frame and hoisting frame, it is achieved the activity operations between different layers.
4, section steel platform is set between undermost climbing frame and Sarasota and carries out closing of revealing all the details, it is totally-enclosed that climbing frame surrounding arranges steel wire, the platform of hoisting frame and guardrail adopt wire gauze to close, weld 4 reinforcing bars in the bottom of anchor ear along steel pipe walls to support as insurance, therefore, the firm safety of the auxiliary stand system results of the present invention is high, reduces construction risk.
Accompanying drawing explanation
Fig. 1 is the Sarasota construction auxiliary stand system structure schematic diagram of the present invention.
Number in the figure: 1 is steel pipe, 2 is hoisting frame, and 3 is climbing frame, and 4 is anchor ear, and 5 is chain block, and 6 is insurance steel cable, and 7 is adjustable ladder, and 8 is tower crane, and 9 is cat ladder passage, and 10 is elevator, and 11 is cable tower segment.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
A kind of Sarasota construction auxiliary stand system suitable in different cross section, as it is shown in figure 1, this system includes steel pipe 1, climbing frame 3, hoisting frame 2, anchor ear 4, chain block 5, insurance steel cable 6 and adjustable ladder 7.Steel pipe 1 is provided with four, is separately fixed at around Sarasota, and can vertical extension, and the guide rail that climb fixing as climbing frame 3, hoisting frame 2.Climbing frame 3 is provided with three layers, is fixed on four steel pipes 1, and each layer of climbing frame 3 is all laid along Sarasota circumference, and in being enclosed in by Sarasota, wherein, the climbing frame 3 of the superiors connects into entirety with the climbing frame 3 in intermediate layer by truss.Between undermost climbing frame 3 and Sarasota, section steel platform is set and carries out closing of revealing all the details.Climbing frame 3 includes main frame body and guardrail, and guardrail is located on main frame body；Arranging levels cat ladder passage 9 in climbing frame 3, it is totally-enclosed that climbing frame 3 surrounding arranges steel wire.Hoisting frame 2 is fixed on four steel pipes 1, lays along Sarasota circumference, in being enclosed in by Sarasota, and is positioned at the top of the superiors' climbing frame 3, and the platform of hoisting frame 2 and guardrail adopt wire gauze to close.Anchor ear 4 is located on steel pipe 1, is used for supporting climbing frame 3 or hoisting frame 2, welds 4 reinforcing bars in the bottom of anchor ear 4 along steel pipe walls and supports as insurance.Chain block 5 is connected between adjacent two layers climbing frame 3, or is connected between climbing frame 3 and hoisting frame 2.Insurance steel cable 6 is connected between adjacent two layers climbing frame 3, or is connected between climbing frame 3 and hoisting frame 2.Adjustable ladder 7 is arranged between adjacent two layers climbing frame 3 or is arranged between climbing frame 3 and hoisting frame 2.
Suitable in the building method of the Sarasota construction auxiliary stand system of different cross section, comprise the following steps:
A, the built-in fitting passed through on cushion cap, four steel pipes 1 as whole auxiliary stand guide rail are installed, it is linked to be entirety by sway bracing pipe between 4 steel pipes 1, steel pipe 1 arranges one cross pipe along every 24 meters of short transverse, and steel pipe 1 arranges, every 6 meters, the attached wall part fixing to be connected with Sarasota together along short transverse simultaneously；When two steel pipes 1 that are connected weld, coupling full weld, and outside coupling, weld stiffened steel plates；
B, installing bottom layer climbing frame: first install 4 anchor ears 4 on steel pipe, to be locked at anchor ear 4 on steel pipe as support, the climbing frame 3 of piecemeal installing bottom layer, in like manner install all the other 2 layers of climbing frame 3 and hoisting frames 2 from lower to upper；
C, respectively between adjacent two layers climbing frame 3, and hang chain block 5 between climbing frame 3 and hoisting frame 2 as promoting power set, and connect insurance steel cable 6；
D, complete a sections Sarasota construction after, 4 steel pipes 1 of spreading, tower crane 8 is utilized to promote the height of 2 one cable tower segments of hoisting frame, the climbing frame 3 of the superiors is hung over by chain block 5 and promotes on hoisting frame 2, the climbing frame 3 of lower floor is hung over by chain block 5 and promotes on adjacent upper climbing frame 3, and adjust anchor ear 4 position and make anchor ear 4 be locked on steel pipe 1 and be supported on below climbing frame 3 or the hoisting frame 2 of new high degree, complete an operation circulation.
In the present embodiment, Sarasota total height is 107.928m, and tower top elevation is+114.502m, and bridge floor level above is 81.107m.Sarasota cross section is formed by " circle " and " side " combined transformation, and Sarasota is circular section section from the downward 39.0m of tower top, thus to being that circular section changes to square-section section at the bottom of tower.Tower top diameter of section is 6.5m, and it is 5.5m king-post minimum dimension that circular section starts to change section diameter to square-section.According to Sarasota construction features, bracket position and upper king-post strut staying cable anchorage zone section construction requirement, Sarasota is divided into 19 construction sections.Sarasota 1,2 sections adopts conventional two-row scaffold to construct, and 3 ~ 19 sections adopt the auxiliary stand system of the present invention to construct.
Steel pipe 1 adopts the steel pipe of major diameter spiral steel pipe such as more than external diameter 80cm.The height of climbing frame 3 is 3.2m, the body frame height 2m in climbing frame 3, guardrail height 1.2m；The height of hoisting frame 2 is 1.72 meters, and 3 climbing frames are the main body of Sarasota construction auxiliary stand.Insurance steel cable 6 external diameter adopts 28mm.Anchor ear 4 arranges 4 brackets, and anchor ear internal diameter is Φ 820mm, and panel is 12mm steel plate, and adpting flange is 12mm steel plate, and floor is 12mm steel plate, and anchor ear flange adopts 8 M20 × 1008.8 grade high-strength bolts to connect, and bolt hole is φ 22.
Sarasota has been constructed after cable tower segment 11, and spreading steel pipe 1, to cable tower segment height to be onstructed, utilizes tower crane 8 to promote hoisting frame 2, and locks anchor ear 4.Utilize chain block 5 successively to promote climbing frame 3 respectively, and lock anchor ear 4, hang insurance steel cable 6.Improve adjustable ladder 7 and cat ladder passage 9, convenient construction operating personnel from elevator 10 to the upper and lower operation of safety after climbing frame.
The above-mentioned description to embodiment is to be understood that for ease of those skilled in the art and use invention.These embodiments obviously easily can be made various amendment by person skilled in the art, and General Principle described herein is applied in other embodiments without through performing creative labour.Therefore, the invention is not restricted to above-described embodiment, those skilled in the art's announcement according to the present invention, the improvement made without departing from scope and amendment all should within protection scope of the present invention.
Claims (9)
1. the Sarasota construction auxiliary stand system being applicable to different cross section, it is characterised in that this system includes:
Steel pipe (1): be provided with four, be separately fixed at around Sarasota, and can vertical extension, and the guide rail that climb fixing as climbing frame (3), hoisting frame (2)；
Climbing frame (3): be provided with three layers, is fixed on four steel pipes (1), and each layer of climbing frame (3) is all laid along Sarasota circumference, in being enclosed in by Sarasota；
Hoisting frame (2): be fixed on four steel pipes (1), lays along Sarasota circumference, in being enclosed in by Sarasota, and is positioned at the top of the superiors' climbing frame (3)；
Anchor ear (4): be located on steel pipe (1), is used for supporting climbing frame (3) or hoisting frame (2)；
Chain block (5): be connected between adjacent two layers climbing frame (3), or be connected between climbing frame (3) and hoisting frame (2)；
Insurance steel cable (6): be connected between adjacent two layers climbing frame (3), or be connected between climbing frame (3) and hoisting frame (2).
2. a kind of Sarasota construction auxiliary stand system suitable in different cross section according to claim 1, it is characterised in that the climbing frame (3) of the superiors and the climbing frame (3) in intermediate layer connect into entirety by truss.
3. a kind of Sarasota construction auxiliary stand system suitable in different cross section according to claim 1, it is characterised in that between undermost climbing frame (3) and Sarasota, section steel platform is set and carries out closing of revealing all the details.
4. a kind of Sarasota construction auxiliary stand system suitable in different cross section according to claim 1, it is characterised in that also include the adjustable ladder (7) being arranged between adjacent two layers climbing frame (3) or being arranged between climbing frame (3) and hoisting frame (2).
5. a kind of Sarasota construction auxiliary stand system suitable in different cross section according to claim 1, it is characterised in that described climbing frame (3) includes main frame body and guardrail, and guardrail is located on main frame body；Being provided with cat ladder passage (9) in climbing frame (3), it is totally-enclosed that climbing frame (3) surrounding arranges steel wire.
6. a kind of Sarasota construction auxiliary stand system suitable in different cross section according to claim 1, it is characterised in that the platform of described hoisting frame (2) and guardrail adopt wire gauze to close.
7. a kind of Sarasota construction auxiliary stand system suitable in different cross section according to claim 1, it is characterised in that weld 4 reinforcing bars in the bottom of anchor ear (4) along steel pipe walls and support as insurance.
8. the building method of the Sarasota construction auxiliary stand system being applicable to different cross section as described in claim 1 to 7, it is characterised in that comprise the following steps:
A) by the built-in fitting on cushion cap, four steel pipes (1) as whole auxiliary stand guide rail are installed；
B) installing bottom layer climbing frame: first install 4 anchor ears (4) on steel pipe, to be locked at anchor ear (4) on steel pipe as support, the climbing frame (3) of piecemeal installing bottom layer, in like manner installs all the other 2 layers of climbing frame (3) and hoisting frames (2) from lower to upper；
C) respectively between adjacent two layers climbing frame (3), and hang chain block (5) between climbing frame (3) and hoisting frame (2) as promoting power set, and connect insurance steel cable (6)；
D) after completing the Sarasota construction of a sections, 4 steel pipes (1) of spreading, tower crane (8) is utilized to promote the height of (2) cable tower segments of hoisting frame, the climbing frame (3) of the superiors is hung over by chain block (5) and promotes on hoisting frame (2), the climbing frame (3) of lower floor is hung over by chain block (5) and promotes on adjacent upper climbing frame (3), and adjusting anchor ear (4) position, to make anchor ear (4) be locked at steel pipe (1) upper and be supported on climbing frame (3) or hoisting frame (2) lower section of new high degree, completes an operation circulation.
9. the building method of the Sarasota construction auxiliary stand system suitable in different cross section according to claim 8, it is characterized in that, it is linked to be entirety by sway bracing pipe between 4 described steel pipes (1), steel pipe (1) arranges one cross pipe along every 24 meters of short transverse, and steel pipe (1) arranges, every 6 meters, the attached wall part fixing to be connected with Sarasota together along short transverse simultaneously；When two steel pipes (1) that are connected are welded, coupling full weld, and outside coupling, weld stiffened steel plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610138193.6A CN105755959B (en) | 2016-03-11 | 2016-03-11 | Suitable for the Sarasota construction auxiliary stand system and building method of different cross section |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610138193.6A CN105755959B (en) | 2016-03-11 | 2016-03-11 | Suitable for the Sarasota construction auxiliary stand system and building method of different cross section |
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| CN105755959A true CN105755959A (en) | 2016-07-13 |
| CN105755959B CN105755959B (en) | 2017-07-28 |
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| CN201610138193.6A Active CN105755959B (en) | 2016-03-11 | 2016-03-11 | Suitable for the Sarasota construction auxiliary stand system and building method of different cross section |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107700819A (en) * | 2017-10-26 | 2018-02-16 | 中铁大桥局集团第八工程有限公司 | Climbing frame and the king-post construction method using climbing frame in king-post construction in king-post construction |
| CN113684758A (en) * | 2021-09-07 | 2021-11-23 | 中国铁建大桥工程局集团有限公司 | Self-anchored suspension bridge construction auxiliary device |
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| JP2003328323A (en) * | 2002-05-15 | 2003-11-19 | Kajima Corp | Construction method of tower structure |
| JP2010048060A (en) * | 2008-08-25 | 2010-03-04 | Shimizu Corp | Construction method of structure |
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| CN103898836A (en) * | 2014-03-03 | 2014-07-02 | 中铁港航局集团有限公司 | Method for construction of high upper beam steel oblique leg prestress support of H-shaped cable bent tower of cable-stayed bridge |
| CN105155414A (en) * | 2015-09-24 | 2015-12-16 | 中铁四局集团第二工程有限公司 | Floor-type slant-legged steel truss bracket of lower transverse beam of large-span cable tower |
| CN205501830U (en) * | 2016-03-11 | 2016-08-24 | 广东省长大公路工程有限公司 | Cable support tower construction removable support |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003328323A (en) * | 2002-05-15 | 2003-11-19 | Kajima Corp | Construction method of tower structure |
| JP2010048060A (en) * | 2008-08-25 | 2010-03-04 | Shimizu Corp | Construction method of structure |
| CN103243654A (en) * | 2013-05-16 | 2013-08-14 | 中交路桥华南工程有限公司 | Mounting method for steel anchor beam of cable-stayed bridge and assembly jig and cable bent tower mounting platform used in method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107700819A (en) * | 2017-10-26 | 2018-02-16 | 中铁大桥局集团第八工程有限公司 | Climbing frame and the king-post construction method using climbing frame in king-post construction in king-post construction |
| CN113684758A (en) * | 2021-09-07 | 2021-11-23 | 中国铁建大桥工程局集团有限公司 | Self-anchored suspension bridge construction auxiliary device |
| CN113684758B (en) * | 2021-09-07 | 2023-12-05 | 中国铁建大桥工程局集团有限公司 | Self-anchored suspension bridge construction auxiliary device |
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| CN105755959B (en) | 2017-07-28 |
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