CN102720143B - Guide beam and installation and disassembly method thereof - Google Patents

Guide beam and installation and disassembly method thereof Download PDF

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Publication number
CN102720143B
CN102720143B CN201210223156.7A CN201210223156A CN102720143B CN 102720143 B CN102720143 B CN 102720143B CN 201210223156 A CN201210223156 A CN 201210223156A CN 102720143 B CN102720143 B CN 102720143B
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CN
China
Prior art keywords
nose girder
suspension centre
transition linkage
truss
transition
Prior art date
Application number
CN201210223156.7A
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Chinese (zh)
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CN102720143A (en
Inventor
李治强
田宝华
彭继安
陈幼林
杨毅
王岑
刘延龙
申瑞烂
周建新
巨建基
徐仁华
杨肃钟
张晓飞
董凤杰
周川岭
樊建国
Original Assignee
中铁二十三局集团有限公司
中铁二十三局集团第三工程有限公司
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Application filed by 中铁二十三局集团有限公司, 中铁二十三局集团第三工程有限公司 filed Critical 中铁二十三局集团有限公司
Priority to CN201210223156.7A priority Critical patent/CN102720143B/en
Publication of CN102720143A publication Critical patent/CN102720143A/en
Application granted granted Critical
Publication of CN102720143B publication Critical patent/CN102720143B/en

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Abstract

The invention discloses a guide beam and an installation and disassembly method thereof. The guide beam comprises a guide beam body, a first transition connecting section and a second transition connecting section, wherein the first transition connecting section and the second transition connecting section are arranged at two ends of the guide beam body, and the guide beam is in demountable connection with both the first transition connecting section and the second transition connecting section. By the aid of the structure that the guide beam is in demountable connection with both the first transition connecting section and the second transition connecting section, the guide beam is convenient to disassemble can be recycled after disassembly. The installation and disassembly are not affected by the restriction of topographic conditions, disassembled guide beams of various sections are convenient to transport and are particularly suitable for high pier girder dragging erection in mountainous areas.

Description

A kind of installation and removal method of nose girder

Technical field

The present invention relates to a kind of installation method of bridge construction closure, particularly a kind of nose girder of nose girder method construction and installation and removal method of this nose girder utilized.

Background technology

In bridge engineering, carry out girder truss pushing tow or when dilatory, tend to adopt nose girder to assist installation, existing nose girder especially plate girder itself from great, construction mounting or dismounting inconvenience, efficiency of construction is low, and the installation and removal time of nose girder has directly had influence on the progress speed of engineering.

As " setting up of the only stub Precast T-Beam of large eccentricity " literary composition in the 1st phase " engineering science and technology " in 2008 10th~14 pages, a kind of method of utilizing nose girder construction is disclosed, there is following weak point:

1, nose girder installation and removal speed is slow;

2, large span is assembled and when dilatory, and nose girder structure used is larger, is not easy to transport.

Summary of the invention

The technical problem that the present invention solves is to overcome the above-mentioned deficiency of prior art, and a kind of easy accessibility, the small and exquisite nose girder of being convenient to transport of structure are provided, and the installation and removal method of this nose girder.

For solving the problems of the technologies described above, the invention provides following technical scheme: a kind of nose girder, comprise nose girder body and be arranged at respectively First Transition linkage section and the second transition linkage section at nose girder body two ends, equal dismantled and assembled connections between described nose girder body and First Transition linkage section, the second transition linkage section.

Preferably, between described nose girder body and First Transition linkage section, the second transition linkage section, be all bolted.

Preferably, described nose girder body comprises a lower chord tube that is arranged at bottom, and two pipes that wind up that are arranged at top and are parallel to each other, and described lower chord tube and two wind up and between pipe, are all fixedly installed oblique web member.

Preferably, the cross section of described nose girder body is del.

Preferably, the bottom surface of described transition linkage section is to upwarping away from the direction of nose girder body.

Preferably, described transition linkage section is curved away from the bottom surface, one end of nose girder body.

The installation and removal method of above-mentioned nose girder, comprises following step:

A, at the top of the first truss of installation in position, bearing frame is installed, the afterbody of bearing frame arranges rear suspension centre, and described rear suspension centre is by bearing frame and the first truss anchoring, and the front end of bearing frame is provided with front suspension centre, and described front suspension centre is suspended in midair and had tugboat by the first hoist cable;

B, in the second truss end to be joined the two sections of a bridge, etc, nose girder is installed, the second transition linkage section of nose girder is fixedly connected with the second truss, and the First Transition linkage section of nose girder is lifted on the front end of bearing frame by described tugboat;

C, at the top of bearing frame, middle suspension centre is set, described middle suspension centre, between front suspension centre and rear suspension centre, is provided with the second hoist cable on middle suspension centre, and described the second hoist cable is sling First Transition linkage section;

D, First Transition linkage section is separated from nose girder body, and by the second hoist cable, First Transition linkage section is transferred to ground;

E, by bearing frame to the second truss one side shifting, make the second transition linkage section be lifted on bearing frame front end by tugboat;

F, nose girder body is separated from described the second transition linkage section, and by the second hoist cable, nose girder body is transferred to ground;

G, by the first hoist cable, the second truss is sling, and by the second hoist cable, the second transition linkage section is transferred to ground;

H, position suspension centre one side shifting backward by front suspension centre on bearing frame, the first hoist cable hanging on front suspension centre is pulled to the second truss and the closure of the first truss.

Compared with prior art, the invention has the beneficial effects as follows:

1, owing to being dismantled and assembled connection between nose girder body and First Transition linkage section, the second transition linkage section, adopt such structure, recycling after convenient dismounting and dismounting, not limited by orographic condition, the convenient transport of each sections nose girder after dismounting, is particularly suitable for the dilatory erection construction of the high pier girder in mountain area.

2, adopt the inverted triangular truss structure being made up of the pipe that winds up, lower chord tube and diagonal brace, nose girder is lighter with truss cloth postpone deadweight, and self stability is good, has been particularly useful for large span erection of main beam.

3, First Transition linkage section and the smoother transition of the first truss, is convenient to load and dismounting.

4, adopt above-mentioned nose girder to carry out closing construction, closure precision good, speed is fast, and simple in structure, volume is little, be convenient to transport.

Brief description of the drawings

Fig. 1 is the structural representation of nose girder of the present invention;

Fig. 2 is the cross sectional representation of Fig. 1;

Fig. 3 to Figure 11 utilizes nose girder of the present invention to carry out the schematic diagram of closing construction.

In figure, mark is as follows: nose girder body-1; First Transition linkage section-2a; Second transition linkage section-2b; Lower chord tube-3; Pipe-4 of winding up; Oblique web member-5; The first truss-6a; The second truss-6b; Bearing frame-7; Front suspension centre-8a; Middle suspension centre-8b; Rear suspension centre-8c; The first hoist cable-9a; The second hoist cable-9b; Tugboat-10; Jack-11.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated.

Embodiments of the present invention are not limited to following examples, within the various variations of making under the prerequisite that does not depart from aim of the present invention all belong to protection scope of the present invention.

The structure of the nose girder in the present embodiment as depicted in figs. 1 and 2, comprise nose girder body 1 and be arranged at First Transition linkage section 2a and the second transition linkage section 2b at nose girder body 1 two ends, described nose girder body 1 comprises a lower chord tube 3 that is arranged at bottom, and two pipes 4 that wind up that are arranged at top and are parallel to each other, described lower chord tube 3 and two wind up and are all fixedly installed oblique web member 5 between pipe 4, now, the cross section of nose girder is del, form trussed construction, not only self stability is good, and deadweight is lighter.Between described nose girder body 1 and First Transition linkage section 2a and the second transition linkage section 2b, be all bolted, herein, also can adopt remaining removably to connect: as clamping etc., can First Transition linkage section 2a and the second transition linkage section 2b and nose girder body 1 be separated or be connected as a single entity according to operation.

The bottom surface of First Transition linkage section 2a is to upwarping away from the direction of nose girder body 1, and described First Transition linkage section 2a is curved away from the bottom surface, one end of nose girder body 1.Adopt such structure, transition linkage section 2 and the smoother transition of the first truss, be convenient to load and dismounting, not limited by orographic condition, and the convenient transport of each sections nose girder after dismounting, is particularly suitable for the dilatory erection construction of the high pier girder in mountain area.

Adopt the installation and removal method of above-mentioned nose girder as follows, by following method, can span larger, wait closure by the first truss 6a and the second truss 6b draw over to one's side, and closure.

Step a, at the top of the first truss 6a of installation in position, bearing frame 7 is installed, the afterbody of bearing frame 7 arranges rear suspension centre 8c, described rear suspension centre 8c is by bearing frame 7 and the first truss 6a anchoring, the front end of bearing frame 7 is provided with front suspension centre 8a, and described front suspension centre 8a has tugboat 10 by the first hoist cable 9a suspention;

Step b, in the second truss 6b end to be joined the two sections of a bridge, etc, nose girder is installed, the second transition linkage section 2b of nose girder is fixedly connected with the second truss 6b, and the First Transition linkage section 2a of nose girder is lifted on the front end of bearing frame 7 by described tugboat 10;

Step c, middle suspension centre 8b is set at the top of bearing frame 7, described middle suspension centre 8b, between front suspension centre 8a and rear suspension centre 8c, is provided with the second hoist cable 9b on middle suspension centre 8b, and described the second hoist cable 9b slings First Transition linkage section 2a;

Steps d, First Transition linkage section 2a is separated from nose girder body 1, and by the second hoist cable 9b, First Transition linkage section 2a is transferred to ground;

Step e, by bearing frame 7 to the second truss 6b mono-side shifting, make the second transition linkage section 2b be lifted on bearing frame 7 front ends by tugboat 10;

Step f, nose girder body 1 is separated from described the second transition linkage section 2b, and by the second hoist cable 9b, nose girder body 1 is transferred to ground;

Step g, by the first hoist cable 9a, the second truss 6b is sling, and by the second hoist cable 9b, the second transition linkage section 2b is transferred to ground;

Step h, between front suspension centre 8a and bearing frame 7, be provided with jack 11, above-mentioned jack 11 is suspension centre 8c mono-side shifting backward of the position on bearing frame 7 by front suspension centre 8a, and the first hoist cable 9a hanging on front suspension centre 8a is pulled to the second truss 6b and the first truss 6a closure.

By reference to the accompanying drawings embodiments of the invention are described in detail above; but the present invention is not limited to above-described embodiment; in the ken possessing those of ordinary skill in the art, can also make various variations, within these variations all belong to protection scope of the present invention.

Claims (2)

1. an installation and removal method for nose girder, is characterized in that, comprises following step:
Step a: bearing frame (7) is installed at the top at first truss (6a) of installation in position, the afterbody of bearing frame (7) arranges rear suspension centre (8c), described rear suspension centre (8c) is by bearing frame (7) and the first truss (6a) anchoring, the front end of bearing frame (7) is provided with front suspension centre (8a), and described front suspension centre (8a) has tugboat (10) by the first hoist cable (9a) suspention;
Step b: nose girder is installed in the second truss (6b) end to be joined the two sections of a bridge, etc, nose girder comprises nose girder body (1) and is arranged at respectively First Transition linkage section (2a) and the second transition linkage section (2b) at nose girder body (1) two ends, equal dismantled and assembled connections between described nose girder body (1) and First Transition linkage section (2a), the second transition linkage section (2b), the second transition linkage section (2b) of nose girder is fixedly connected with the second truss (6b), and the First Transition linkage section (2a) of nose girder is lifted on the front end of bearing frame (7) by described tugboat (10);
Step c: middle suspension centre (8b) is set at the top of bearing frame (7), described middle suspension centre (8b) is positioned between front suspension centre (8a) and rear suspension centre (8c), on middle suspension centre (8b), be provided with the second hoist cable (9b), described the second hoist cable (9b) is sling First Transition linkage section (2a);
Steps d: First Transition linkage section (2a) is separated from nose girder body (1), and by the second hoist cable (9b), First Transition linkage section (2a) is transferred to ground;
Step e: to the second truss (6b) side shifting, make the second transition linkage section (2b) be lifted on bearing frame (7) front end by tugboat (10) bearing frame (7);
Step f: nose girder body (1) is separated from described the second transition linkage section (2b), and by the second hoist cable (9b), nose girder body (1) is transferred to ground;
Step g: by the first hoist cable (9a), the second truss (6b) is sling, and by the second hoist cable (9b), the second transition linkage section (2b) is transferred to ground;
Step h: the position by front suspension centre (8a) on bearing frame (7) is suspension centre (8c) side shifting backward, the first hoist cable (9a) hanging on front suspension centre (8a) is pulled to the second truss (6b) with the first truss (6a) and joins the two sections of a bridge, etc.
2. the installation and removal method of nose girder according to claim 1, is characterized in that: in described step h, between described front suspension centre (8a) and bearing frame (7), be provided with jack (11).
CN201210223156.7A 2012-06-30 2012-06-30 Guide beam and installation and disassembly method thereof CN102720143B (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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CN102720143B true CN102720143B (en) 2014-07-30

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005264533A (en) * 2004-03-18 2005-09-29 Taisei Corp Prestressed concrete box girder incremental launching erection method
JP2006283323A (en) * 2005-03-31 2006-10-19 Oriental Construction Co Ltd Incremental launching construction apparatus for bridge
CN101117792A (en) * 2007-08-22 2008-02-06 中铁大桥局股份有限公司 Erection method of large-span continuous steel truss arch
CN101831874A (en) * 2010-05-27 2010-09-15 中铁大桥局集团第一工程有限公司 Multipoint synchronous push construction method for porous large-span continuous steel truss girder
CN201943009U (en) * 2011-02-22 2011-08-24 北京城建道桥建设集团有限公司 Simple fast-dismounting type steel truss guide beam
CN202672045U (en) * 2012-06-30 2013-01-16 中铁二十三局集团有限公司 Guide beam

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005264533A (en) * 2004-03-18 2005-09-29 Taisei Corp Prestressed concrete box girder incremental launching erection method
JP2006283323A (en) * 2005-03-31 2006-10-19 Oriental Construction Co Ltd Incremental launching construction apparatus for bridge
CN101117792A (en) * 2007-08-22 2008-02-06 中铁大桥局股份有限公司 Erection method of large-span continuous steel truss arch
CN101831874A (en) * 2010-05-27 2010-09-15 中铁大桥局集团第一工程有限公司 Multipoint synchronous push construction method for porous large-span continuous steel truss girder
CN201943009U (en) * 2011-02-22 2011-08-24 北京城建道桥建设集团有限公司 Simple fast-dismounting type steel truss guide beam
CN202672045U (en) * 2012-06-30 2013-01-16 中铁二十三局集团有限公司 Guide beam

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