CN103628408B - The construction method of bridge cast in place concrete form Eight characters bracing frame - Google Patents
The construction method of bridge cast in place concrete form Eight characters bracing frame Download PDFInfo
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- CN103628408B CN103628408B CN201310538941.6A CN201310538941A CN103628408B CN 103628408 B CN103628408 B CN 103628408B CN 201310538941 A CN201310538941 A CN 201310538941A CN 103628408 B CN103628408 B CN 103628408B
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Abstract
The invention discloses a kind of construction method of bridge cast in place concrete form Eight characters bracing frame, inside two pier studs along the bridge, many montants are in one line along cross-bridges direction, each montant lower end and the anchoring of pier stud cushion cap, bottom, middle part and top respectively with pier shaft anchoring; Montant upper end is connected by end distribution beam; In cross-bridges direction, be connected to each other by horizontal stull in the middle part of each montant; Each montant lower end all connects the lower end of a battered leg, by shoring connection between two battered leg upper ends along the bridge; Be connected by longitudinal stull in the middle part of battered leg along the bridge with in the middle part of montant; Connected by horizontal stull in the middle part of each battered leg in cross-bridges direction, each battered leg upper end, cross-bridges direction is connected by middle part distribution beam; Many previously prepared good Bailey truss are arranged in end and middle part distribution beam along the bridge, form Eight characters supporting & stablizing structure.Construction technology of the present invention can make below current unaffected, and without any need for temporary base, install and dismantle simple, cyclic utilization rate is high.
Description
Technical field
The present invention relates to cast-in-place concrete construction of bridge technology, particularly a kind of construction method of Cast-in-situ Beam formwork-support.
Background technology
The domestic formwork-support for Cast-in-situ Beam at present, general employing raft support method and steel pipe pile Bailey truss system, these two kinds of structures all have drawback in various degree: raft support method need gather in below bowl fastening type support or tube and couple scaffold, and it arranges template system; This form is lower to foundation requirement, but steel pipe spacing is little, and conventional pitch, between 30 ~ 90cm, cannot meet the current requirement in below, and support height is unsuitable excessive, within being generally used for 15m height.Steel pipe pile Bailey truss system arranges template system on shellfish truss, below arranges the larger steel pipe of diameter as stress system, and single steel pipe is stressed all comparatively large, has requirement that is current below can meeting and height, but the method requires high to temporary base, a large amount of economic input of temporary needs.
Summary of the invention
The object of this invention is to provide a kind of construction technology of new bridge cast in place concrete form bracing frame, below can be met current unaffected, and without any need for temporary base, install and dismantle simple, cyclic utilization rate is high.
For reaching above object, the present invention takes following technical scheme to be achieved:
A construction method for bridge cast in place concrete form Eight characters bracing frame, is characterized in that, comprise the steps:
(1) montant is installed
Inside two pier studs along the bridge, many montants are in one line along cross-bridges direction, each montant lower end and the anchoring of pier stud cushion cap, the bottom of each montant, middle part and top respectively with pier shaft anchoring; Montant upper end is connected by end distribution beam; In cross-bridges direction, be connected to each other by horizontal stull in the middle part of each montant;
(2) battered leg and shore installation
Each montant lower end all connects the lower end that is adjusted the battered leg at angle of inclination in advance, by shoring connection between two battered leg upper ends along the bridge; Be connected by longitudinal stull in the middle part of battered leg along the bridge with in the middle part of montant; Connected by horizontal stull in the middle part of each battered leg in cross-bridges direction, each battered leg upper end, cross-bridges direction is connected by middle part distribution beam;
(3) trussed construction is installed
By many previously prepared good Bailey truss crane order liftings, be arranged in end and middle part distribution beam along the bridge, form Eight characters supporting & stablizing structure.
(4) dismounting of Eight characters bracing frame
After Cast-in-situ Beam concrete construction, according to trussed construction, distribution beam, shore, the order of battered leg, montant removes successively.
In said method, described in cross-bridges direction, each montant, each battered leg, except middle part is connected to each other by horizontal stull, are also provided with bridging.The connection of described montant lower end and battered leg lower end adopts the mode of gusset plate pin joint.Described battered leg upper end along the bridge and the connection of shoring, adopt the mode of gusset plate pin joint.Described inside two pier studs along the bridge, every side montant all arranges and is no less than 2.Described Bailey truss is no less than 6.
Compare existing raft support method and steel pipe pile Bailey truss method, the present invention, without the need to taking underlying space, meets the current location having strict demand; Also do not need temporary base simultaneously, be suitable for any geologic structure section, be particularly suitable for, across river, cross a river, Muddy Bottoms location, significantly to reduce construction costs.
Accompanying drawing explanation
Fig. 1 is the vertical structure schematic diagram of Eight characters bracing frame involved in the present invention.
Fig. 2 is the transversary schematic diagram of Fig. 1 Eight characters bracing frame.
Fig. 3 is the concrete structure figure of part in Fig. 1 or Fig. 2 Eight characters bracing frame.Wherein: a is montant; B is battered leg; C is for shoring.
In Fig. 1 ~ Fig. 3: 1, montant; 2, battered leg; 3, shore; 4, middle part distribution beam; 4 ' end distribution beam; 5, Bailey truss; 6, longitudinal stull; 6 ' horizontal stull; 7, bridging; 8, pier stud; 9, cushion cap; 10, Cast-in-situ Beam; 11, template.Wherein: 1-1, flange; 1-2, gusset plate; 1-3, pin-and-hole; 2-1, gusset plate; 2-2, pin-and-hole; 2-3, gusset plate; 2-4, pin-and-hole; 2-5, bearing support; 3-1, gusset plate; 3-2, pin-and-hole.
Detailed description of the invention
As shown in Figure 1 and Figure 2, a kind of bridge cast in place concrete form Eight characters bracing frame, comprises montant 1, battered leg 2, shores 3, middle part distribution beam 4, Bailey truss 5 etc., wherein, montant 1 is made up of steel pipe, flange 1-1 and gusset plate 1-2 that (Fig. 3 a), gusset plate 1-2 establishes pin-and-hole 1-3; Battered leg 2 is made up of (Fig. 3 b) steel pipe, gusset plate 2-1,2-3, pin-and-hole 2-2,2-4, bearing support 2-5; Shore 3 to be made up of (Fig. 3 c) steel pipe, gusset plate 3-1, pin-and-hole 3-2.Pin-and-hole 1-3 on montant 1 gusset plate 1-2 is connected by steel pin with the pin-and-hole 2-2 on battered leg 2 gusset plate 2-1; Pin-and-hole 2-4 on battered leg 2 gusset plate 2-3 is connected by steel pin with the pin-and-hole 3-2 shored on 3 gusset plate 3-1.
As shown in Figure 3, montant 1 is seamless steel pipe, and blue 1-1 is managed at two ends, and gusset plate 1-2 is set in bottom, gusset plate is established pin-and-hole 1-3.Battered leg 2 is seamless steel pipe, and gusset plate 2-1 is established in lower end, and gusset plate 2-3 and bearing support 2-5 is established in upper end, gusset plate is established pin-and-hole 2-2,2-4.Shore 3 for seamless steel pipe, gusset plate 3-1 is established at two ends, gusset plate is established pin-and-hole 3-2.
With reference to figure 1, montant 1 is connected by longitudinal stull 6 with pier stud 8; Montant 1 is connected by longitudinal stull 6 with battered leg 2.Middle part distribution beam 4 is welded with the bearing support 2-5 on battered leg 2, makes battered leg 2 one-tenth Eight characters structure.
With reference to figure 2, be connected with bridging 7 by horizontal stull 6 ' between montant 1 is horizontal.End distribution beam 4 ' is welded with the flange 1-1 on montant 1, and many Bailey truss 5 are vertically shelved in distribution beam.Stull is that channel-section steel assembly welding becomes " " shape structure, and is welded and fixed between montant, battered leg and built-in fitting; Bridging is angle steel, and montant, is welded and fixed between battered leg.Distribution beam is i iron group welding piece, and montant top flange, is welded and fixed between battered leg bearing support.
A kind of Fig. 1 Eight characters bracing frame construction method of installation, comprises the steps:
(1) montant is installed
With reference to figure 1 ~ Fig. 3, fixed by the built-in fitting of montant 1 with cushion cap 9 by the flange 1-1 bottom montant, built-in fitting and flange pass through bolt anchoring; After the vertical bury pipe of adjustment montant, at suitable bridge to (longitudinal direction), lower node plate 1-2 position, the middle part of montant 1 are connected with the built-in fitting of pier stud 8 with longitudinal stull 6 respectively with top; At direction across bridge, adopt four montants in one line, middle part is connected to each other by horizontal stull 6 ', and installs bridging 7; Montant 1 top is welded with end distribution beam 4 ', and so far montant installs;
(2) battered leg and shore installation
With reference to figure 1 ~ Fig. 3, along bridge to, is connected with the gusset plate 2-1 of battered leg 2 end by the gusset plate 1-2 of montant 1 bottom, connection employing pin joint; Utilize wire rope to hold battered leg 2 upper end, adjust battered leg angle; Be connected with the gusset plate 3-1 shoring 3 by the gusset plate 2-3 on battered leg 2 top, connect and adopt pin joint; Be connected in the middle part of battered leg 2 with in the middle part of montant 1 by longitudinal stull 6; Battered leg top bearing support 2-5 welds with middle part distribution beam 4, and at direction across bridge, the same montant of battered leg quantity, is also connected by stull 6 ' each other, and install bridging 7; So far battered leg 2 and shore 3 and install;
(3) trussed construction is installed
With reference to figure 2, utilize crane to lift by crane multiple (in figure being 10) Bailey truss 5 along bridge to being arranged in end distribution beam 4 ' and middle part distribution beam 4, so far whole support frame structure installs.
(4) support frame structure is removed
After cast-in-place concrete construction, according to trussed construction, middle part distribution beam 4, end distribution beam 4 ', shore 3, the order of battered leg 2, montant 1 removes successively.
Claims (4)
1. a construction method for bridge cast in place concrete form Eight characters bracing frame, is characterized in that, comprise the steps:
(1) montant is installed
Inside two pier studs along the bridge, many montants are in one line along cross-bridges direction, each montant lower end and the anchoring of pier stud cushion cap, the bottom of each montant, middle part and top respectively with pier shaft anchoring; Montant upper end is connected by end distribution beam; In cross-bridges direction, be connected to each other by horizontal stull in the middle part of each montant;
(2) battered leg and shore installation
Each montant lower end all connects the lower end that is adjusted the battered leg at angle of inclination in advance, by shoring connection between two battered leg upper ends along the bridge, is connected in the middle part of battered leg along the bridge with in the middle part of montant by longitudinal stull; Connected by horizontal stull in the middle part of each battered leg in cross-bridges direction, each battered leg upper end, cross-bridges direction is connected by middle part distribution beam; Wherein, the connection of montant lower end and battered leg lower end adopts the mode of gusset plate pin joint; Battered leg upper end along the bridge and the connection of shoring, adopt the mode of gusset plate pin joint;
(3) trussed construction is installed
By many previously prepared good Bailey truss crane order liftings, be arranged in end and middle part distribution beam along the bridge, form Eight characters supporting & stablizing structure;
(4) dismounting of Eight characters bracing frame
After Cast-in-situ Beam concrete construction, according to trussed construction, distribution beam, shore, the order of battered leg, montant removes successively.
2. the construction method of bridge cast in place concrete form Eight characters bracing frame as claimed in claim 1, is characterized in that, described in cross-bridges direction, and each montant, each battered leg, except middle part is connected to each other by horizontal stull, are also provided with bridging.
3. the construction method of bridge cast in place concrete form Eight characters bracing frame as claimed in claim 1, is characterized in that, described inside two pier studs along the bridge, every side montant all arranges and is no less than 2.
4. the construction method of bridge cast in place concrete form Eight characters bracing frame as claimed in claim 1, it is characterized in that, described Bailey truss is no less than 6.
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| CN201310538941.6A CN103628408B (en) | 2013-11-01 | 2013-11-01 | The construction method of bridge cast in place concrete form Eight characters bracing frame |
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| CN201310538941.6A CN103628408B (en) | 2013-11-01 | 2013-11-01 | The construction method of bridge cast in place concrete form Eight characters bracing frame |
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| CN103628408B true CN103628408B (en) | 2016-03-02 |
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| CN104963295A (en) * | 2015-07-27 | 2015-10-07 | 中铁九局集团第二工程有限公司 | Support frame for non-ground internal-force balanced cast-in-place beam and construction method thereof |
| CN106087746A (en) * | 2016-06-14 | 2016-11-09 | 江苏燕宁建设工程有限公司 | A kind of cast-in-situ box girder falsework construction method and bridge |
| CN106939557B (en) * | 2017-05-11 | 2019-01-22 | 中铁第五勘察设计院集团有限公司 | A kind of pin-connected panel bracket casting platform of brace support |
| CN110565528A (en) * | 2019-08-08 | 2019-12-13 | 中铁五局集团有限公司 | Novel assembled cast in situ concrete support |
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| JP3536269B2 (en) * | 1996-01-08 | 2004-06-07 | 清水建設株式会社 | Construction method of concrete bridge and feed girder used for the construction method |
| JP3610828B2 (en) * | 1999-06-07 | 2005-01-19 | ピーシー橋梁株式会社 | High-strength lightweight composite girder bridge and its construction method |
| CN100406677C (en) * | 2006-05-24 | 2008-07-30 | 杨秋利 | Tunnel lining trolley |
| CN100526573C (en) * | 2008-08-28 | 2009-08-12 | 温州建设集团公司 | Construction method of structure conversion layer concrete girder steel bracket formwork support |
| CN101481902A (en) * | 2009-01-21 | 2009-07-15 | 中铁三局集团有限公司 | V type pier inclined leg combined type support for continuous rigid frame bridge and layered cast-in-situ construction method |
| CN201648977U (en) * | 2010-04-28 | 2010-11-24 | 中铁三局集团有限公司 | Slant legged rigid frame bracket system of cast-in-place prestressed concrete continuous beam at bridge site |
| CN202543806U (en) * | 2012-03-30 | 2012-11-21 | 中铁大桥局集团第五工程有限公司 | Self-floating carrier frame bracket for bridge construction |
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