CN105178197B - Support frame for bearing formworks of initial blocks of bridge box girder and initial block construction method - Google Patents

Support frame for bearing formworks of initial blocks of bridge box girder and initial block construction method Download PDF

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Publication number
CN105178197B
CN105178197B CN201510633511.1A CN201510633511A CN105178197B CN 105178197 B CN105178197 B CN 105178197B CN 201510633511 A CN201510633511 A CN 201510633511A CN 105178197 B CN105178197 B CN 105178197B
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China
Prior art keywords
chord member
bridge pier
sandbox
horizontal
horizontal chord
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Expired - Fee Related
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CN201510633511.1A
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Chinese (zh)
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CN105178197A (en
Inventor
王阳松
章铭荣
周月军
韩栋
张海国
陈芳芳
毛彩霞
姜建民
张平
汪文华
王奇
戚兰兰
朱叶儿
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Zhejiang Quzhou Communications Construction Group Co Ltd
HANGZHOU XIAOHONG CONSTRUCTION GROUP Ltd
Original Assignee
Zhejiang Quzhou Communications Construction Group Co Ltd
HANGZHOU XIAOHONG CONSTRUCTION GROUP Ltd
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Priority to CN201510633511.1A priority Critical patent/CN105178197B/en
Publication of CN105178197A publication Critical patent/CN105178197A/en
Application granted granted Critical
Publication of CN105178197B publication Critical patent/CN105178197B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention discloses a support frame for bearing the formworks of initial blocks of a bridge box girder and an initial block construction method. The support frame comprises a plurality of trusses (1), wherein each truss (1) comprises a horizontal chord member (5) and an inclined chord member (6), the inner end of each horizontal chord member (5) is hinged with an upper support seat (2), the outer end of each horizontal chord member (5) is hinged with the upper end of the corresponding inclined chord member (6), and the lower end of each inclined chord member (6) is hinged with a lower support seat (3); an inner sand box (7) and an outer sand box (8) are both placed on each horizontal chord member (5); an inner cross beam (10) is placed on each inner sand box (7), an outer cross beam (11) is placed on each outer sand box (8), and longitudinal beams (12) are placed on the inner cross beams (10) and the outer cross beams (11); and the formworks of the initial blocks (20) are erected on the longitudinal beams (12). The key of the method lies in that the trusses (1) are distributed on a bridge pier (4) in a suspension manner, and the formworks are distributed on the trusses (1). The support frame and the method are capable of simplifying the operation procedures and reducing the labour intensity.

Description

For supporting the support and initial block construction method of the original block template of bridge box and beam
Technical field
The present invention relates to science of bridge building field, be especially it is a kind of for support the template of the original block of bridge box and beam The construction method of the original block of frame and bridge box and beam.
Background technology
Box beam is one kind of science of bridge building central sill, and inside is hollow shape, and there is the edge of a wing top both sides, is similar to chest, thus is obtained Name.It is convenient for statement, introduce two orientation concepts, the length direction of the length direction of box beam also bridge is longitudinal direction, case The width of the width of beam also bridge is horizontal.
The construction segmentation of box beam is poured, first construction bearing platform, then bridge pier is poured on cushion cap, is then poured in pier coping portion Build the original block of box beam.Described original block refers to and is cast in pier coping portion and hangs along monosymmetric two before and after bridge pier Bridge pier is protruded in arm-type box beam section, the front end of front box beam section and the rear end of rear cabinet beam section, and rear end and the rear cabinet of front box beam section The front end connection of beam section, above-mentioned two box beam section is formed by integrally casting shaping.
After the completion of original block is poured, other follow-up box beams of instrument such as hanging basket whereabouts both sides paragraph by paragraph pouring box beam are recycled Section.And it is quite ripe to pour the construction method prior art of other follow-up box beam sections, such as Application No. It is described in detail in 2014101573937 patent application and is poured one by one with hanging basket after the original block of box beam is poured The method of other follow-up box beam sections, therefore the application is repeated no more.
Still the original block problem that box beam how is poured in pier coping portion of the application discussion.Prior art pours bridge case The construction method of the original block of beam is, first pours cushion cap and bridge pier successively, then sets up from the bottom up in the periphery of bridge pier and cushion cap Full hall scaffold, then sets up the template of box beam original block, and the steel reinforcement cage of colligation original block on scaffold top, finally pours into a mould Initial block concrete.
There is following drawback in the method for the original block of prior art construction bridges box beam:Before construction, the model that cushion cap is covered Enclose the scope covered with scaffold to be required to arrange cofferdam draining and carry out the basement process such as drive piles, as such, it is desirable to draining and ground The area of base process is larger, long in time limit, high labor intensive, wastes time and energy;And, when bridge pier is higher, pin hand is set up from the bottom up The amount of steel pipe and fastener spent by frame is big, it is slow further to slow down speed of application, increase labour intensity.
The content of the invention
The invention solves the problems that a technical problem be to provide one kind and can simplify operational sequence, be greatly lowered and work by force Degree, reduction of erection time, the time saving and energy saving support for supporting the template of the original block of bridge box and beam.
The technical solution of the present invention is to provide a kind of mould for supporting the original block of bridge box and beam of following structure The support of plate, it is including both sides before and after separation bridge pier and along the symmetrical many truss structures of bridge pier;
One upper bracket of correspondence and a undersetting per truss structure, upper bracket and undersetting are anchored at bridge pier concrete It is interior;
Include a horizontal chord member and an inclined chord per truss structure, the inner and the upper bracket of horizontal chord member are hinged, level The outer end of chord member is hinged with inclined chord upper end, and inclined chord lower end is hinged with undersetting;
The horizontal chord member of whole truss is impartial high, is shelved with interior sandbox and outer sandbox, interior sandbox on horizontal chord member per root Directly rest on horizontal chord member and be provided with cushion block between outer sandbox and horizontal chord member;
An interior crossbeam is shelved with the interior sandbox of the horizontal chord member of whole of the same side, positioned at whole water of the same side An outer crossbeam is shelved with the outer sandbox of flat chord member, on the interior crossbeam and outer crossbeam of the same side many longerons are shelved with; Template for pouring box beam original block rides upon longeron.
The invention solves the problems that another technical problem be to provide one kind and can simplify operational sequence, be greatly lowered and work by force Degree, reduction of erection time, the construction method of the original block of time saving and energy saving bridge box and beam.
Another technical solution of the present invention is to provide a kind of construction method of the original block of bridge box and beam, and it includes Following construction procedure:
A, horizontal chord member outer end and inclined chord upper end are hinged with prefabricated truss, and pour cushion cap;
B, bridge abutment moulding plate and colligation bridge pier reinforcing bar are set up, pour and smash bridge pier concrete, and it is pre- in former and later two sides of bridge pier Bury upper bracket and undersetting;
C, the inner of the horizontal chord member of each truss is hinged with corresponding upper bracket, and by under the inclined chord of each truss End is hinged with corresponding undersetting;
D, on the horizontal chord member of each truss an interior sandbox and a cushion block are shelved, one is shelved on each cushion block Outer sandbox;
An interior crossbeam is shelved on e, all interior sandbox on front side of bridge pier, is shelved on all outer sandboxes on front side of bridge pier A piece outer crossbeam, on all interior sandbox on rear side of bridge pier an interior crossbeam is shelved, and is put on all outer sandboxes on rear side of bridge pier Put an outer crossbeam;
F, the interior crossbeam on front side of bridge pier with many parallel longerons are shelved on outer crossbeam, the interior crossbeam on rear side of bridge pier and Many parallel longerons are shelved on outer crossbeam;
G, set up on many longerons box beam original block template, and the reinforcing bar of colligation original block pours and smashes original block Concrete;
H, after original block concrete is stiff, the stopper of whole sandboxes is pulled out and puts sand so that the mould of longeron and original block Occur gap between plate, be easy to follow-up dismounting.
The present invention is used for the construction party of the original block of the support and bridge box and beam of the template of the original block for supporting bridge box and beam Method compared with prior art, with following remarkable advantage and beneficial effect.
Firstly, since the support for carrying the template of box beam original block is hanging laying, then the scope that the support is covered is not With carrying out basement process and cofferdam draining again, it is only necessary to by being processed in the range of cushion cap, reducing needs to carry out draining and ground The area of base process, simplifies working procedure, shortens man-hour, reduces labour intensity, time saving and energy saving;It is additionally, since vacantly, Without building from the bottom up as scaffold, therefore the impact of bridge pier height is eliminated, no matter how high bridge pier is, consumed all without increasing Material amount and workload;And, truss is prefabricated, is also removable connection with the installation of bridge pier, and assembly or disassembly process is square Just it is quick, and the truss after dismantling can also circulate and recycle, good economy performance.
Used as improvement, horizontal chord member includes the two pieces points of bars in left and right, and per root, point bar is by a big channel-section steel and a channel bar structure Into channel bar web is welded on big channel-section steel web inner surface, and two pieces points of bar openings of horizontal chord member are towards relatively;Inclined chord also by Two same point bars are constituted, but two pieces points of bar openings of inclined chord are towards opposite to each other;Each bearing is anchored at bridge pier by two pieces Interior parallel connecting plate is constituted, and two points of inner bars of horizontal chord member are located between two connecting plates of upper bracket;Outside horizontal chord member Two points of bars at end are located between two points of bars of inclined chord upper end;Two connecting plates of undersetting be located at inclined chord lower end two points of bars it Between, such design causes installation and removal more convenient, and the intensity of truss is preferable, firmly installs.
Preferably, being provided with perpendicular connecting rod and oblique connecting rods between the horizontal chord member and inclined chord per truss structure, connection is erected The middle spot welding of the middle spot welding of bar one end and horizontal chord member and the other end and inclined chord, oblique connecting rods one end and horizontal chord member The inner is welded and the other end and the middle spot welding of oblique connecting rods, so, further increases the firmness of truss.
As further improvement, between every two Pin adjacent truss of bridge pier the same side cross connection side is welded with Steel, so, can be cross-linked into integrally-built support by single truss structure, further strengthen firmness.
Description of the drawings
Fig. 1 is the present invention for supporting the overlooking the structure diagram of the support of the template of the original block of bridge box and beam.
Fig. 2 is the present invention for supporting the positive structure diagram of the support of the template of the original block of bridge box and beam.
Fig. 3 is the present invention for supporting the side structure schematic view of the support of the template of the original block of bridge box and beam.
Fig. 4 is that horizontal chord member of the present invention for supporting the support of the template of the original block of bridge box and beam is hinged with upper bracket The side structure schematic view of point.
Fig. 5 is the present invention for supporting the inclined chord and undersetting pin joint of the support of the template of the original block of bridge box and beam Side structure schematic view.
Fig. 6 is that horizontal chord member of the present invention for supporting the support of the template of the original block of bridge box and beam is hinged with inclined chord The side structure schematic view of point.
1, truss shown in figure, 2, upper bracket, 3, undersetting, 4, bridge pier, 5, horizontal chord member, 6, inclined chord, 7, interior sandbox, 8th, outer sandbox, 9, cushion block, 10, interior crossbeam, 11, outer crossbeam, 12, longeron, 13, big channel-section steel, 14, channel bar, 15, connecting plate, 16, Perpendicular connecting rod, 17, oblique connecting rods, 18, cross connection square steel, 19, cushion cap, 20, original block.
Specific embodiment
Below in conjunction with the accompanying drawings the invention will be further described with specific embodiment.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, the present invention is used for the template of the original block for supporting bridge box and beam Support, it is including both sides before and after separation bridge pier 4 and along the symmetrical many truss structures 1 of bridge pier 4.Specifically, there are three Pin the front side of bridge pier 4 Truss 1, the rear side of bridge pier 4 also has three truss structures 1, and the position of a truss structure 1 of each truss structure 1 of front side and rear side is just pair and court To contrary.
One upper bracket 2 of correspondence and a undersetting 3 per truss structure 1, upper bracket 2 and undersetting 3 are anchored at bridge pier 4 and mix In solidifying soil.Each bearing is made up of two pieces of parallel connecting plates 15, and the major part of every piece of connecting plate 15 is anchored at the mixed of bridge pier 4 Solidifying soil is interior and small part protrudes the concrete of bridge pier 4, and the anchorage part of connecting plate 15 is welded with the cage bar of bridge pier 4.
Include a horizontal chord member 5 and an inclined chord 6 per truss structure 1, the inner of horizontal chord member 5 is namely near bridge pier 4 one end is hinged with upper bracket 2, and the outer end of horizontal chord member 5 is namely hinged away from one end and the upper end of inclined chord 6 of bridge pier 4, tiltedly The lower end of chord member 6 is hinged with undersetting 3.
Perpendicular connecting rod 16 and oblique connecting rods 17 are provided between horizontal chord member 5 and inclined chord 6 per truss structure 1, connecting rod is erected The middle spot welding of the middle spot welding of 16 one end and horizontal chord member 5 and the other end and inclined chord 6, the one end of oblique connecting rods 17 and horizontal chord Weld and the middle spot welding of the other end and oblique connecting rods 17 the inner of bar 5.
Specifically, horizontal chord member 5 includes the two pieces point bars in left and right, per root point bar by a big channel-section steel 13 such as 32b channel-section steels with Piece channel bar 14 such as 25b channel-section steels are constituted, and the web of channel bar 14 is welded on the web inner surface of big channel-section steel 13, and the two of horizontal chord member 5 Root point bar opening is towards relatively, that is to say, that the opening of two points of bars is toward each other.Inclined chord 6 is also by two same point bar structures Into per root, a point bar is made up of the such as 32b channel-section steels of big channel-section steel 13 and a channel bar 14 such as 25b channel-section steels, the web of channel bar 14 Equally be welded on the web inner surface of big channel-section steel 13, but difference be two pieces point bar openings of inclined chord 6 towards opposite to each other, that is, Say, the opening of two points of bars is dorsad each other.Two points of bars of the inner of horizontal chord member 5 are located between two connecting plates 15 of upper bracket 2;Level Two points of bars of the outer end of chord member 5 are located between two points of bars of the upper end of inclined chord 6;Two connecting plates 15 of undersetting 3 are located under inclined chord 6 Between two points of bars at end.
The horizontal chord member 5 of whole truss 1 is contour, is shelved with interior sandbox 7 and outer sandbox 8 on horizontal chord member 5 per root, interior Sandbox 7 directly rests on horizontal chord member 5 and cushion block 9 is provided between outer sandbox 8 and horizontal chord member 5;Interior sandbox 7 is referred near bridge pier 4 sandbox and outer sandbox 8 refer to the sandbox away from bridge pier 4.
An interior crossbeam 10 is shelved with the interior sandbox 7 of the horizontal chord member 5 of whole of front side, positioned at whole water of front side An outer crossbeam 11 is shelved with the outer sandbox 8 of flat chord member 5, on the interior crossbeam 10 and outer crossbeam 11 of front side many are shelved with Longeron 12.An interior crossbeam 10 is also shelved with the interior sandbox 7 of the horizontal chord member 5 of whole of rear side, positioned at the whole of rear side Also an outer crossbeam 11 is shelved with the outer sandbox 8 of horizontal chord member 5, is shelved with the interior crossbeam 10 and outer crossbeam 11 of rear side Many longerons 12.Template for pouring box beam original block 20 rides upon the longeron 12 of the front side of bridge pier 4 and rear side.
Cross connection square steel 18 is welded between every two Pin adjacent truss 1 of the same side of bridge pier 4.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, the construction method of the original block of bridge box and beam of the present invention, it includes Following construction procedure.
A, the outer end of horizontal chord member 5 and the upper end of inclined chord 6 are hinged with prefabricated truss 1, and conventional prior is installed Method pours cushion cap 19, before pouring cushion cap 19, in the range of cushion cap 19 is covered cofferdam draining and basement process is carried out.
B, the template of bridge pier 4 and the reinforcing bar of colligation bridge pier 4 are set up, pour and smash the concrete of bridge pier 4, and in former and later two sides of bridge pier 4 The pre-buried upper bracket 2 in face and undersetting 3, pre-buried three upper brackets 2 in each side and three undersettings 3.
C, the inner of the horizontal chord member 5 of each truss 1 is hinged with corresponding upper bracket 2, and by the oblique string of each truss 1 The lower end of bar 6 is hinged with corresponding undersetting 3.
D, on the horizontal chord member 5 of each truss 1 an interior sandbox 7 and a cushion block 9 are shelved, put on each cushion block 9 Put an outer sandbox 8.
An interior crossbeam 10 is shelved on e, all interior sandbox 7 on front side of bridge pier 4, in all outer sandboxes 8 of the front side of bridge pier 4 On shelve an outer crossbeam 11, the rear side of bridge pier 4 all in shelve an interior crossbeam 10 on sandbox 7, in the complete of the rear side of bridge pier 4 An outer crossbeam 11 is shelved outside portion on sandbox 8.
F, on interior crossbeam 10 and the outer crossbeam 11 of the front side of bridge pier 4 many parallel longerons 12 are shelved, in the rear side of bridge pier 4 The longeron 12 parallel with shelving many on outer crossbeam 11 of interior crossbeam 10.
G, set up on many longerons 12 box beam original block 20 template, and the reinforcing bar of colligation original block 20 pours and smashes just The concrete of beginning block 20.
H, after the concrete of original block 20 is stiff, the stopper of whole sandboxes is pulled out and puts sand so that longeron 12 and original block There is gap between 20 template, be easy to follow-up dismounting.Dismantle template, longeron 12, interior crossbeam 10, the outer crossbeam 11 of original block 20 With whole sandboxes, whole truss 1 of finally dismantling.

Claims (3)

1. a kind of support for supporting the template of the original block of bridge box and beam, it is characterised in that:It is included before separation bridge pier (4) Both sides and along the symmetrical many truss structures (1) of bridge pier (4) afterwards;
One upper bracket (2) of correspondence and a undersetting (3) per truss structure (1), upper bracket (2) and undersetting (3) are anchored at In bridge pier (4) concrete;
Per truss structure (1) including a horizontal chord member (5) and an inclined chord (6), the inner and upper bracket of horizontal chord member (5) (2) it is hinged, outer end and inclined chord (6) upper end of horizontal chord member (5) are hinged, and inclined chord (6) lower end is hinged with undersetting (3);
The horizontal chord member (5) of whole truss (1) is contour, and interior sandbox (7) and outer sandbox are shelved with horizontal chord member (5) per root (8), interior sandbox (7) directly rests on horizontal chord member (5) and cushion block (9) is provided between outer sandbox (8) and horizontal chord member (5);
An interior crossbeam (10) is shelved with the interior sandbox (7) of the horizontal chord member of the whole (5) of the same side, positioned at the same side All an outer crossbeam (11) is shelved with the outer sandbox (8) of horizontal chord member (5), positioned at the interior crossbeam (10) and outer horizontal stroke of the same side Many longerons (12) are shelved with beam (11);Template for pouring box beam original block (20) rides upon longeron (12);
Horizontal chord member (5) includes the two pieces points of bars in left and right, and per root, a point bar is made up of a big channel-section steel (13) and a channel bar (14), Channel bar (14) web is welded on big channel-section steel (13) web inner surface, and two pieces points of bar openings of horizontal chord member (5) are towards relatively;Tiltedly Chord member (6) is also made up of two same point bars, but two pieces points of bar openings of inclined chord (6) are towards opposite to each other;
Each bearing is made up of two pieces of parallel connecting plates (15) being anchored in bridge pier (4), and the two of horizontal chord member (5) the inner It is divided to bar to be located between two connecting plates (15) of upper bracket (2);Two points of bars of horizontal chord member (5) outer end are located at inclined chord (6) upper end Two points of bars between;Two connecting plates (15) of undersetting (3) are between two points of bars of inclined chord (6) lower end;
Perpendicular connecting rod (16) and oblique connecting rods (17) are provided between horizontal chord member (5) and inclined chord (6) per truss structure (1), are erected The middle spot welding of the middle spot welding of connecting rod (16) one end and horizontal chord member (5) and the other end and inclined chord (6), oblique connecting rods (17) one end is welded and the middle spot welding of the other end and oblique connecting rods (17) with the inner of horizontal chord member (5).
2. the support for supporting the template of the original block of bridge box and beam according to claim 1, it is characterised in that:It is located at Cross connection square steel (18) is welded between every two Pin adjacent truss (1) of bridge pier (4) the same side.
3. a kind of construction method of the original block of bridge box and beam, it is characterised in that:It includes following construction procedure:
A, horizontal chord member (5) outer end and inclined chord (6) upper end are hinged with prefabricated truss (1), and pour cushion cap (19);
B, bridge pier (4) template and colligation bridge pier (4) reinforcing bar are set up, pour and smash bridge pier (4) concrete, and two before and after bridge pier (4) The pre-buried upper bracket (2) in individual side and undersetting (3);
C, the inner of the horizontal chord member (5) of each truss (1) is hinged with corresponding upper bracket (2), and by each truss (1) Inclined chord (6) lower end is hinged with corresponding undersetting (3);
D, on the horizontal chord member (5) of each truss (1) an interior sandbox (7) and a cushion block (9) are shelved, in each cushion block (9) an outer sandbox (8) is shelved on;
An interior crossbeam (10) is shelved on e, all interior sandbox (7) on front side of bridge pier (4), it is all outer on front side of bridge pier (4) An outer crossbeam (11) is shelved on sandbox (8), on all interior sandbox (7) on rear side of bridge pier (4) an interior crossbeam (10) is shelved, An outer crossbeam (11) is shelved on all outer sandbox (8) on rear side of bridge pier (4);
F, the interior crossbeam (10) on front side of bridge pier (4) longeron (12) parallel with shelving many on outer crossbeam (11), in bridge pier (4) Interior crossbeam (10) longeron (12) parallel with shelving many on outer crossbeam (11) of rear side;
G, set up on many longerons (12) box beam original block (20) template, and the reinforcing bar of colligation original block (20) pours and smashes The concrete of original block (20);
H, after original block (20) concrete is stiff, the stopper of whole sandboxes is pulled out and puts sand so that longeron (12) and original block (20) there is gap between template, be easy to follow-up dismounting.
CN201510633511.1A 2015-09-30 2015-09-30 Support frame for bearing formworks of initial blocks of bridge box girder and initial block construction method Expired - Fee Related CN105178197B (en)

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CN201510633511.1A CN105178197B (en) 2015-09-30 2015-09-30 Support frame for bearing formworks of initial blocks of bridge box girder and initial block construction method

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Application Number Priority Date Filing Date Title
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CN105178197B true CN105178197B (en) 2017-04-26

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CN105951610A (en) * 2016-05-13 2016-09-21 中铁十七局集团第二工程有限公司 Support structure assisting in cantilever beam construction and construction method

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JP3728657B2 (en) * 2000-09-26 2005-12-21 清水建設株式会社 Railway bridge replacement method
CN202881854U (en) * 2012-10-15 2013-04-17 中交四航局第二工程有限公司 Support bracket for bridge construction
CN203188589U (en) * 2013-04-15 2013-09-11 张增娟 Rigid-frame continuous beam zero block construction bracket supporting system
CN103628416B (en) * 2013-12-18 2016-06-29 中铁大桥局集团有限公司 Stiffening girder of suspension bridge is to pulling type pier side bracket
CN203729208U (en) * 2013-12-30 2014-07-23 中铁五局(集团)有限公司 Continuous beam number zero block support
CN104233961B (en) * 2014-09-30 2016-09-07 福建省第一公路工程公司 A kind of supporting shelf bracket of No. 0 block of cantilever bridge

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