CN103898835B - The anti-back of the body of bridge draws load-bearing construction bracket and construction method - Google Patents
The anti-back of the body of bridge draws load-bearing construction bracket and construction method Download PDFInfo
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- CN103898835B CN103898835B CN201410071308.5A CN201410071308A CN103898835B CN 103898835 B CN103898835 B CN 103898835B CN 201410071308 A CN201410071308 A CN 201410071308A CN 103898835 B CN103898835 B CN 103898835B
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Abstract
The anti-back of the body of a kind of bridge draws load-bearing construction bracket and construction method, and comprise abutment foundation, pull bar column is embedded in abutment foundation by multiple steel plate base, is embedded with load-bearing otic placode at the sidewall of abutment foundation; Reinforcing bar load-bearing piece and diagonal brace form frame structural beam, and frame structural beam one end is connected with load-bearing otic placode, and the upper surface of frame structural beam is connected with pull bar column by many pull bars.Construction method comprises the following steps: during abutment foundation construction, bury steel plate base, load-bearing otic placode underground; Reinforcing bar load-bearing piece is installed in place; Processing pull rod column, then welded and installed is in steel plate base; Pull bar is installed; Welding diagonal brace; Lay scaffold and beam body bed die, reinforcing bar, formwork erection and concrete construction are installed; More than realize the beam body construction of little span bridge.The invention solves the load-bearing problem of little span bridge beam body concrete cast-in-place construction, simultaneously structure of the present invention drawn materials easily, the equipment that adopts is simple, the construction period soon, especially can hide the impact of flood.
Description
Technical field
The present invention relates to anti-back of the body of the construction field of the Cast-in-situ Beam body in bridge construction, particularly a kind of bridge and draw load-bearing construction bracket and construction method.
Background technology
The construct method of main employing of the domestic and international bridge beam body to little span (being often referred to single span be less than and equal 32 meters) is at present:
1, the cast-in-place method in island is built; Adopt filling material will to carry out filling within the scope of beam body installation region and compaction in layers, form island platform.Then formwork for placing base, install reinforcing bar, formwork erection, concreting, build bridge floor, finally excavate platform.This construction method advantage is that method is the simplest, and shortcoming is that the required duration is the longest, and will be equipped with enough cubic metres of earth and stone and dig, fill, transport normally carrying out of equipment guarantee work, and in the flood season, construction exists certain risk.
2, flat moulded prefabricated method; Build precasting yard in dry the position of one piece of relatively flat of looking for, in the venue bridge beam body burst has been constructed.Then crane is utilized to carry out lifting or utilize Bridge Erector by beam body installation in position.Finally carry out the construction of bridge floor.This construction method advantage is that method is simple, the duration fast, and can continue construction in the flood season, shortcoming to be equipped with large-scale crane or Bridge Erector.
3, full hall stack arrangement; Utilize scaffold and fastener to set up full hall bearing bent frame, then set up base template, reinforcing bar, formwork erection, concreting are installed, build bridge floor, finally remove full hall bearing bent frame.This construction method advantage is that method is simple, and shortcoming is long in time limit, and needs a large amount of steel pipes, fastener material.
4, Bailey bracket support cast-in-place method.Adopt Bailey bracket as bearing bent frame, then set up base template, reinforcing bar, formwork erection, concreting are installed, build bridge floor, finally remove Bailey bracket.This construction method advantage is strong adaptability, and can construct in flood period, the duration is moderate.Shortcoming is technical difficulty relative complex, need be equipped with professional, and need purchase or lease Bailey bracket.
Because certain hydroelectric pivotal project highway cross a river Bridge Project of marching into the arena is positioned at remote mountain area, equipment, material to be marched into the arena difficulty in engineering early stage, location is relatively poor and backward, a lot of equipment lacks leasing market, quite difficulty purchased on a large scale by material, and the duration of a project requires pretty nervous, often has sudden flood to harass.
Summary of the invention
Technical problem to be solved by this invention is to provide anti-back of the body of a kind of bridge and draws load-bearing construction bracket and construction method, can solve the load-bearing problem of beam body concrete cast-in-place construction, draws materials easily simultaneously, equipment is simple, the duration is fast, can hide the impact of flood.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: the anti-back of the body of a kind of bridge draws load-bearing construction bracket, and comprise abutment foundation, pull bar column is embedded in abutment foundation by multiple steel plate base, is embedded with load-bearing otic placode at the sidewall of abutment foundation;
Reinforcing bar load-bearing piece and diagonal brace form frame structural beam, and frame structural beam one end is connected with load-bearing otic placode, and the upper surface of frame structural beam is connected with pull bar column by many pull bars.
The upper surface of described frame structural beam is equipped with scaffold, and scaffold is provided with beam body bed die.
Described pull bar is connected with frame structural beam by flange screw rod.
In described frame structural beam, reinforcing bar load-bearing piece is positioned at the two sides of frame structural beam, and diagonal brace is positioned at the upper and lower end face of frame structural beam.
Described reinforcing bar load-bearing piece is formed by the leg-of-mutton bar shaped reinforcement welding of multi-disc.
Described diagonal brace is " X " shape diagonal brace.
Adopt that above-mentioned bridge is counter carries on the back a construction method of drawing load-bearing construction bracket, comprise the following steps:
One, when carrying out abutment foundation construction, steel plate base be embedded in the structural concrete of abutment foundation, load-bearing otic placode adds with steel plate base and is welded and fixed man-hour;
Two, the screwing steel bars load-bearing piece in advance in steel bar meter field, adopts lifting installation in position;
Three, with channel-section steel or i iron processing pull rod column, then welded and installed is in steel plate base;
Four, welding or installation pull bar, and adopt flange screw rod to be connected in place with reinforcing bar load-bearing piece;
Five, to keep at a certain distance away welding diagonal brace at the upper and lower end face of reinforcing bar load-bearing piece, reinforcing bar load-bearing piece is connected into frame structural beam;
Six, lay scaffold and beam body bed die in the upper surface of frame structural beam, carry out follow-up bridge beam body and reinforcing bar, formwork erection and concrete construction are installed;
The beam body construction of little span bridge is realized by above-mentioned steps.
The anti-back of the body of a kind of bridge provided by the invention draws load-bearing construction bracket and construction method, the structure of semi girder is drawn by adopting the anti-back of the body, solve the load-bearing problem of little span bridge beam body concrete cast-in-place construction, simultaneously structure of the present invention is drawn materials easily, the equipment that adopts is simple, the construction period soon, especially can hide the impact of flood, be highly suitable for the backwoodsman construction of equipment and material shortage.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the integrally-built schematic diagram of the present invention.
Fig. 2 is the A direction view in Fig. 1.
In figure: reinforcing bar load-bearing piece 1, load-bearing otic placode 2, pull bar column 3, pull bar 4, flange screw rod 5, abutment foundation 6, steel plate base 7, scaffold 8, beam body bed die 9, diagonal brace 10.
Detailed description of the invention
Embodiment 1:
As in Fig. 1,2, the anti-back of the body of a kind of bridge draws load-bearing construction bracket, comprises abutment foundation 6, and pull bar column 3 is embedded in abutment foundation 6 by multiple steel plate base 7, is embedded with load-bearing otic placode 2 at the sidewall of abutment foundation 6;
Reinforcing bar load-bearing piece 1 and diagonal brace 10 form frame structural beam, and frame structural beam one end is connected with load-bearing otic placode 2, and the upper surface of frame structural beam is connected with pull bar column 3 by many pull bars 4.Structure thus, can carry out the construction of bridge beam body concrete cast-in-situ on whole construction bracket.
Preferably, described reinforcing bar load-bearing piece 1 is formed by the leg-of-mutton bar shaped reinforcement welding of multi-disc.Described diagonal brace 10 is " X " shape diagonal brace, for overcoming the left and right amount of deflection that reinforcing bar load-bearing piece 1 produces, and makes it to connect into entirety.The reinforcing bar adopted can enable triangle bar shaped reinforcing bar load-bearing piece bear the weight of monolithic bridge beam body.At abutment foundation 6 sidepiece pre-embedded steel slab load-bearing otic placode, need, by calculating, to enable the steel plate of configuration bear the shear stress of corresponding weight generation.
The upper surface of described frame structural beam is equipped with scaffold 8, and scaffold 8 is provided with beam body bed die 9.
Described pull bar 4 is connected with frame structural beam by flange screw rod 5.The flange screw rod 5 arranged is for adjusting because gravity produces the error that sinking amount of deflection brings.
In described frame structural beam, reinforcing bar load-bearing piece 1 is positioned at the two sides of frame structural beam, and diagonal brace 10 is positioned at the upper and lower end face of frame structural beam.
Embodiment 2:
On the basis of embodiment 1, the bridge of a kind of employing described in claim 1 ~ 6 is counter carries on the back the construction method of drawing load-bearing construction bracket, comprises the following steps:
One, when carrying out abutment foundation 6 and constructing, steel plate base 7 be embedded in the structural concrete of abutment foundation 6, load-bearing otic placode 2 adds with steel plate base 7 and is welded and fixed man-hour;
Two, the screwing steel bars load-bearing piece 1 in advance in steel bar meter field, adopts small crane or other means, such as hoist engine, electronic or bottle gouard moved by hands etc., lifting installation in position;
Three, with channel-section steel or i iron processing pull rod column 3, then welded and installed is in steel plate base; Processing can be processed in advance in steel bar meter field, also can process at abutment foundation 6 Site Welding.
Four, welding or installation pull bar 4, and adopt flange screw rod 5 to be connected in place with reinforcing bar load-bearing piece 1;
Five, the upper and lower end face of reinforcing bar load-bearing piece 1 keep at a certain distance away welding diagonal brace 10, reinforcing bar load-bearing piece 1 is connected into frame structural beam;
Six, lay scaffold 8 and beam body bed die 9 in the upper surface of frame structural beam, carry out follow-up bridge beam body and reinforcing bar, formwork erection and concrete construction are installed;
The beam body construction of little span bridge is realized by above-mentioned steps.Facts have proved, the present invention have draw materials easily, equipment is simple, the duration is fast, construction safety, can hide the advantages such as flood impact.
Claims (6)
1. bridge is counter carries on the back a construction method of drawing load-bearing construction bracket, comprises abutment foundation (6), and pull bar column (3) is embedded in abutment foundation (6) by multiple steel plate base (7), is embedded with load-bearing otic placode (2) at the sidewall of abutment foundation (6);
Reinforcing bar load-bearing piece (1) and diagonal brace (10) form frame structural beam, and frame structural beam one end is connected with load-bearing otic placode (2), and the upper surface of frame structural beam is connected with pull bar column (3) by many pull bars (4), it is characterized in that comprising the following steps:
One, when carrying out abutment foundation (6) construction, be embedded in the structural concrete of abutment foundation (6) by steel plate base (7), load-bearing otic placode (2) adds with steel plate base (7) and is welded and fixed man-hour;
Two, the screwing steel bars load-bearing piece (1) in advance in steel bar meter field, adopts lifting installation in position;
Three, with channel-section steel or i iron processing pull rod column (3), then welded and installed is in steel plate base;
Four, welding or installation pull bar (4), and adopt flange screw rod (5) to be connected in place with reinforcing bar load-bearing piece (1);
Five, the upper and lower end face of reinforcing bar load-bearing piece (1) keep at a certain distance away welding diagonal brace (10), reinforcing bar load-bearing piece (1) is connected into frame structural beam;
Six, lay scaffold (8) and beam body bed die (9) in the upper surface of frame structural beam, carry out follow-up bridge beam body and reinforcing bar, formwork erection and concrete construction are installed;
The beam body construction of little span bridge is realized by above-mentioned steps.
2. a kind of bridge according to claim 1 is counter carries on the back the construction method of drawing load-bearing construction bracket, it is characterized in that: the upper surface of described frame structural beam is equipped with scaffold (8), and scaffold (8) is provided with beam body bed die (9).
3. a kind of bridge according to claim 1 is counter carries on the back the construction method of drawing load-bearing construction bracket, it is characterized in that: described pull bar (4) is connected with frame structural beam by flange screw rod (5).
4. a kind of bridge according to claim 1 is counter carries on the back the construction method of drawing load-bearing construction bracket, it is characterized in that: in described frame structural beam, reinforcing bar load-bearing piece (1) is positioned at the two sides of frame structural beam, and diagonal brace (10) is positioned at the upper and lower end face of frame structural beam.
5. a kind of bridge according to claim 4 is counter carries on the back the construction method of drawing load-bearing construction bracket, it is characterized in that: described reinforcing bar load-bearing piece (1) is formed by the leg-of-mutton bar shaped reinforcement welding of multi-disc.
6. a kind of bridge according to claim 4 is counter carries on the back the construction method of drawing load-bearing construction bracket, it is characterized in that: described diagonal brace (10) is " X " shape diagonal brace.
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| CN201410071308.5A CN103898835B (en) | 2014-03-02 | 2014-03-02 | The anti-back of the body of bridge draws load-bearing construction bracket and construction method |
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| CN107100187B (en) * | 2017-05-22 | 2019-07-30 | 庄爱军 | Tower crane steel girder erection structure and installation method |
| CN114197317A (en) * | 2021-12-31 | 2022-03-18 | 北京市政路桥股份有限公司 | Bridge reverse back-pull bearing construction support and construction method |
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| JP2009097197A (en) * | 2007-10-15 | 2009-05-07 | Oriental Shiraishi Corp | Method of constructing pillar head |
| CN101832049B (en) * | 2009-03-13 | 2011-07-06 | 中冶成工上海五冶建设有限公司 | Concrete-structured conjoined cylindrical shell construction device and method therefor |
| CN101586465B (en) * | 2009-06-24 | 2011-05-04 | 中煤建筑安装工程公司第六十九工程处 | Construction method of large-diameter coal bunker flat-topping lid |
| CN101649604B (en) * | 2009-08-28 | 2011-04-13 | 中铁八局集团第一工程有限公司 | Construction bracket of 1# block of inclined pull bridge and constructing method thereof |
| CN103266567B (en) * | 2013-04-28 | 2016-03-02 | 中国五冶集团有限公司 | Steel truss cantilever supporting frame and its implementation |
| CN103243658B (en) * | 2013-05-16 | 2015-11-25 | 中交路桥华南工程有限公司 | The spelling method of cable stayed bridge dragging suspension basket |
| CN203755171U (en) * | 2014-03-02 | 2014-08-06 | 葛洲坝集团第一工程有限公司 | Bridge back-pulling bearing construction support |
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