CN104074145A - Closure-section refit construction method for hanging basket - Google Patents

Closure-section refit construction method for hanging basket Download PDF

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Publication number
CN104074145A
CN104074145A CN201410310160.6A CN201410310160A CN104074145A CN 104074145 A CN104074145 A CN 104074145A CN 201410310160 A CN201410310160 A CN 201410310160A CN 104074145 A CN104074145 A CN 104074145A
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China
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hanging basket
closure
carrying platform
construction
closure segment
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CN201410310160.6A
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CN104074145B (en
Inventor
陶聿君
常孝亭
蔡鹏飞
叶志远
李君�
唐先彬
李国迪
李建阳
孙一新
杨智
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GUANGDONG PROV FOUNDATION ENGINEERING Co
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GUANGDONG PROV FOUNDATION ENGINEERING Co
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Abstract

The invention discloses a closure-section refit construction method for a hanging basket. The closure-section refit construction method comprises the steps of cutting off a hanging basket nose before closure, sequentially moving the primary truss and the bearing platform of the hanging basket forwards respectively during closure, and locking the hanging basket when the hanging basket crosses the whole closure section to finish refit for the original hanging basket. The closure-section refit construction method disclosed by the invention realizes a closure construction technology by utilizing the original hanging basket system instead of detaching the hanging basket, the closure-section cost does not need to be additionally increased, the age difference of two sections of concrete in a closure section is effectively shortened, and the construction quality of the concrete in the closure section is ensured; during a bridge construction process, the construction problem of a closure-section bracket is solved, lots of construction time and construction cost are saved simultaneously, and the construction quality of the closure section is ensured; the technology is high in adaptability during extra-high closure-section construction for a cable-stayed bridge, capable of playing a certain promotion role on the closure and linear control for the cable-stayed bridge, and fast and safe in construction; the technology is also capable of further promoting the development of the cable-stayed bridge, and good in popularization and application prospect during construction for the cable-stayed bridge.

Description

A kind of closure segment Hanging Basket repacking construction method
Technical field
The present invention, for field of bridge construction, particularly relates to a kind of closure segment Hanging Basket repacking construction method.
Background technology
Cable stayed bridge is large with its span ability, structural performance good, easy construction, for ease of maintenaince, the feature such as low cost and profile be light and handy attractive in appearance, it is developed rapidly.The scaffold equipment, method of cable stayed bridge generally speaking has three kinds of common methods: Support Method, incremental launching method and cradle construction method.In first two method CONSTRUCTION OF CABLE-STAYED BRIDGE in early days, adopt, adopts the cradle construction from bridge tower to both sides for the current close cable stayed-cable bridge of the cable stayed bridge of growing up, especially multispan more more, supports section by section with oblique cable.So-called Hanging Basket is the capital equipment in cantilever construction, can be divided into truss-like, cable-stayed type, shaped steel formula and hybrid 4 kinds by form of structure.The requirement to Hanging Basket according to concrete cantilever construction process requirement and design drawing, comprehensively compares various forms Hanging Basket feature, weight, employing steel type, construction technology etc.; Hanging Basket design principles: convenient from heavy and light, simple in structure, more stable and stronger, reach and mounting or dismounting, have stronger can reusing, the features such as stressed rear distortion is little, and space abundance under Hanging Basket, can provide larger operation side, be beneficial to the operation of reinforcing bar template construction.So-called cradle construction, refers to while building the large cantilever glider bridge across footpath, adopts basket method, the on the spot operation of segmentation cantilever.It does not need erection bracket and does not use large-scale loop wheel machine.Cradle construction is compared with additive method, has that structure is light, the system of spelling is simple and convenient, without advantages such as ballasts.
The construction method adopting across closure construction in existing cable stayed bridge is: 1) remove Hanging Basket and design new closure segment hanging basket formwork and carry out closure construction; 2) remove Hanging Basket, then carry out that support is set up and template construction, finally carry out closure construction.
Existing closure of bridge structure construction adopts newly-designed Hanging Basket or support is set up, template is closed up, long in time limit, waste material, increase poor and closure segment cost closure segment two ends ages of concrete (steel putting up platform, support are set up, the expense of Hanging Basket design), and can not ensure closure segment concrete construction quality.
Summary of the invention
For addressing the above problem, the invention provides one does not need to remove Hanging Basket and can utilize original Hanging Basket system to carry out closure construction, can solve the construction problem of closure segment bracket, can save again the closure segment Hanging Basket repacking construction method of a large amount of engineering times and cost.
The technical solution adopted for the present invention to solve the technical problems is: a kind of closure segment Hanging Basket repacking construction method, comprises the following steps:
After the girder that S10 completes closure segment both sides is built, retain the Hanging Basket on a side girder, excise the fore that described Hanging Basket front end upwarps;
S20 removes the main couple anchoring of described Hanging Basket, the described main couple that moves forward, after main couple is across whole closure segment with the girder anchoring of closure segment both sides;
The decline carrying platform of described Hanging Basket of S30, installs the contact band between described carrying platform and main couple after the demoulding, the described carrying platform that moves forward under the carrying of described main couple, makes carrying platform stride across whole closure segment;
S40 promotes described carrying platform, makes the two ends of carrying platform prop up respectively the girder of closure segment both sides, and the first support member is set below carrying platform, and by fastening connection piece locking main couple and carrying platform through closure segment.
Be further used as the improvement of technical solution of the present invention, in described step S10, first excise the leading portion of described fore, retain the back segment that hanger is housed, in described step S30, through described hanger, the contact band between described carrying platform and main couple is installed, described carrying platform moves forward, prop up before offside girder at described contact band, stop mobile, the second support member is set below described carrying platform, to after described hanger, move, the back segment of excision residue fore, through described hanger, the contact band between described carrying platform and main couple is installed again, described carrying platform moves forward, make carrying platform stride across whole closure segment.
Be further used as the improvement of technical solution of the present invention, in described step S20, remove after the main couple anchoring of described Hanging Basket, the Suo Li of described Hanging Basket carrying platform is transformed on the girder of having built, then walking counter-pressure roller is installed on described main couple, described main couple moves forward.
Be further used as the improvement of technical solution of the present invention, between described step S20 and step S30, also comprise step S21, described step S21 comprises that dismounting is arranged on the carrying platform thrust mechanism of building girder downside, and places it on Hanging Basket carrying platform.
Be further used as the improvement of technical solution of the present invention, in described step S40, carrying platform below arranges after the first support member, i iron pre-buried on described main couple and girder is welded, then by fastening connection piece locking main couple and carrying platform through closure segment.
Be further used as the improvement of technical solution of the present invention, described fastening connection piece is finish rolling steel.
Beneficial effect of the present invention: the present invention has realized and do not needed to remove Hanging Basket and can utilize original Hanging Basket system to carry out closure Technique, while closing up, adopt the retrofit technology of existing Hanging Basket, without the extra closure segment cost (expense that steel putting up platform, support are set up, Hanging Basket designs) that increases, the length of time that effectively shortens closure segment two section concretes is poor, ensures the concrete construction quality of closure segment.Not only solve the construction problem of closure segment bracket, saved a large amount of engineering times simultaneously.In bridge construction process, shorten the construction period, save construction cost, ensure the construction quality of closure segment.
This technology has stronger compliance in cable stayed bridge overlength closure segment construction, and the closing up of cable stayed bridge, line style control are had to certain progradation, quick construction, safety.This technology also will further advance the development of cable stayed bridge, also has good popularizing application prospect in CONSTRUCTION OF CABLE-STAYED BRIDGE.
Brief description of the drawings
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is construction process schematic diagram of the present invention.
Detailed description of the invention
With reference to Fig. 1, the invention provides a kind of closure segment Hanging Basket repacking construction method, comprise the following steps:
1. after the girder 1 that completes closure segment 10 both sides is built, retain the Hanging Basket 2 on a side girder 1, remove the 22(of stretch-draw mechanism stretch-draw jack and suspension cable on Hanging Basket 2 fores 21), then excise the leading portion of described fore 21, retain the back segment that hanger 23 is housed;
2. remove after main couple 24 anchorings of described Hanging Basket 2, the Suo Li of described Hanging Basket 2 carrying platforms 25 is transformed on the girder 1 of having built, realize Suo Li conversion, then walking counter-pressure roller is installed on described main couple 24, the described main couple 24 that moves forward under the traction of Chain block, after main couple 24 is across whole closure segment 10 and girder 1 anchoring of closure segment 10 both sides;
3. remove and be arranged on carrying platform 25 thrust mechanisms 26 of building girder 1 downside, and place it on Hanging Basket carrying platform 25, so that it is with carrying platform 25 reaches;
4. the carrying platform 25 of the described Hanging Basket 2 of decline, the 25cm that declines under the acting in conjunction of carrying platform 25 by forward and backward anchor pole group jack and lifting body realizes the demoulding, and the contact of installing after the demoulding between described carrying platform 25 and main couple 24 is with 27.Wherein at the front end of described carrying platform 25, the contact of installing between described carrying platform 25 and main couple 24 through described hanger 23 is with 27, remove before carrying platform 25, rear anchor pole group, under the carrying of described main couple 24 by the jack described carrying platform 25 that moves forward, be with 27 to prop up before offside girder 1 in described contact, stop mobile, below described carrying platform 25, first row steel pipe support 3 is set, to after described hanger 23, move, the back segment of excision residue fore 21, the contact of installing between described carrying platform 25 and main couple 24 through described hanger 23 is again with 27, continue the described carrying platform 25 of reach, make carrying platform 25 stride across whole closure segment 10, and extend this girder 1 downside 10cm place,
5. the forward and backward anchor pole group of carrying platform 25 is installed, the contact of removing between carrying platform 25 and main couple 24 is with 27, promote described carrying platform 25, make the two ends of carrying platform 25 prop up respectively the girder 1 of closure segment 10 both sides, second row steel pipe support 3 and the 3rd row's steel pipe support 3 are set below carrying platform 25, i iron 4 pre-buried on described main couple 24 and girder 1 is welded, then lock main couple 24 and carrying platform 25 by the finish rolling steel 28 through closure segment 10.
The present invention has realized and has not needed to remove Hanging Basket and can utilize original Hanging Basket system to carry out closure Technique, while closing up, adopt the retrofit technology of existing Hanging Basket, without the extra closure segment cost (expense that steel putting up platform, support are set up, Hanging Basket designs) that increases, the length of time that effectively shortens closure segment two section concretes is poor, ensures the concrete construction quality of closure segment.Not only solve the construction problem of closure segment bracket, saved a large amount of engineering times simultaneously.In bridge construction process, shorten the construction period, save construction cost, ensure the construction quality of closure segment.
This technology has stronger compliance in cable stayed bridge overlength closure segment construction, and the closing up of cable stayed bridge, line style control are had to certain progradation, quick construction, safety.This technology also will further advance the development of cable stayed bridge, also has good popularizing application prospect in CONSTRUCTION OF CABLE-STAYED BRIDGE.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and the modification that these are equal to or replacement are all included in the application's claim limited range.

Claims (6)

1. a closure segment Hanging Basket repacking construction method, is characterized in that, comprises the following steps:
After the girder that S10 completes closure segment both sides is built, retain the Hanging Basket on a side girder, excise the fore that described Hanging Basket front end upwarps;
S20 removes the main couple anchoring of described Hanging Basket, the described main couple that moves forward, after main couple is across whole closure segment with the girder anchoring of closure segment both sides;
The decline carrying platform of described Hanging Basket of S30, installs the contact band between described carrying platform and main couple after the demoulding, the described carrying platform that moves forward under the carrying of described main couple, makes carrying platform stride across whole closure segment;
S40 promotes described carrying platform, makes the two ends of carrying platform prop up respectively the girder of closure segment both sides, and the first support member is set below carrying platform, and by fastening connection piece locking main couple and carrying platform through closure segment.
2. closure segment Hanging Basket repacking construction method according to claim 1, it is characterized in that: the leading portion that first excises described fore in described step S10, retain the back segment that hanger is housed, in described step S30, through described hanger, the contact band between described carrying platform and main couple is installed, described carrying platform moves forward, prop up before offside girder at described contact band, stop mobile, the second support member is set below described carrying platform, to after described hanger, move, the back segment of excision residue fore, through described hanger, the contact band between described carrying platform and main couple is installed again, described carrying platform moves forward, make carrying platform stride across whole closure segment.
3. closure segment Hanging Basket repacking construction method according to claim 1, it is characterized in that: in described step S20, remove after the main couple anchoring of described Hanging Basket, the Suo Li of described Hanging Basket carrying platform is transformed on the girder of having built, then walking counter-pressure roller is installed on described main couple, and described main couple moves forward.
4. closure segment Hanging Basket repacking construction method according to claim 1, it is characterized in that: between described step S20 and step S30, also comprise step S21, described step S21 comprises that dismounting is arranged on the carrying platform thrust mechanism of building girder downside, and places it on Hanging Basket carrying platform.
5. closure segment Hanging Basket repacking construction method according to claim 1, it is characterized in that: in described step S40, carrying platform below arranges after the first support member, i iron pre-buried on described main couple and girder is welded, then by fastening connection piece locking main couple and carrying platform through closure segment.
6. closure segment Hanging Basket repacking construction method according to claim 5, is characterized in that: described fastening connection piece is finish rolling steel.
CN201410310160.6A 2014-06-30 2014-06-30 A kind of closure segment Hanging Basket repacking construction method Active CN104074145B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104562938A (en) * 2014-12-16 2015-04-29 贵州科润华机电设备有限公司 Bridge climbing turnover formwork and hanging basket integrated device
CN105839550A (en) * 2016-05-23 2016-08-10 中交第公路工程局有限公司 Oppressive traveling mechanism used for cantilever hanging basket and cantilever hanging basket
CN109778720A (en) * 2019-03-18 2019-05-21 浙江兴土桥梁专用装备制造有限公司 Bridge construction construction method based on cradle construction
CN110029598A (en) * 2019-05-20 2019-07-19 南京林业大学 Deformation control method across closure segment in a kind of dismounting Continuous Box Girder Bridge
CN112479115A (en) * 2020-11-02 2021-03-12 上海市基础工程集团有限公司 Be used for steel-concrete composite beam cable-stay bridge to close bridge floor crane combined hoisting construction equipment of section

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104562938A (en) * 2014-12-16 2015-04-29 贵州科润华机电设备有限公司 Bridge climbing turnover formwork and hanging basket integrated device
CN105839550A (en) * 2016-05-23 2016-08-10 中交第公路工程局有限公司 Oppressive traveling mechanism used for cantilever hanging basket and cantilever hanging basket
CN109778720A (en) * 2019-03-18 2019-05-21 浙江兴土桥梁专用装备制造有限公司 Bridge construction construction method based on cradle construction
CN109778720B (en) * 2019-03-18 2020-11-06 浙江兴土桥梁专用装备制造有限公司 Bridge construction method based on cradle construction
CN110029598A (en) * 2019-05-20 2019-07-19 南京林业大学 Deformation control method across closure segment in a kind of dismounting Continuous Box Girder Bridge
CN110029598B (en) * 2019-05-20 2023-12-26 南京林业大学 Deformation control method for removing midspan closure section of continuous box girder bridge
CN112479115A (en) * 2020-11-02 2021-03-12 上海市基础工程集团有限公司 Be used for steel-concrete composite beam cable-stay bridge to close bridge floor crane combined hoisting construction equipment of section

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