CN104805769B - A kind of self-balancing arc beam cast-in-place support and construction method thereof - Google Patents
A kind of self-balancing arc beam cast-in-place support and construction method thereof Download PDFInfo
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- CN104805769B CN104805769B CN201510162014.8A CN201510162014A CN104805769B CN 104805769 B CN104805769 B CN 104805769B CN 201510162014 A CN201510162014 A CN 201510162014A CN 104805769 B CN104805769 B CN 104805769B
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- pull bar
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of self-balancing arc beam cast-in-place support and construction method thereof, including the bracket being located on bridge pier, on bracket, direction across bridge is provided with crossbeam, Curved beam includes arc structure and lower arc structure, truss structure is connected into by six or four beam standard trigonometric sum T-shaped montants between upper arc structure and lower arc structure, truss structure be respectively arranged at two ends with tune across end framework, Curved beam be respectively fixed at two ends with anchor beam frame on crossbeam, connecting between the anchor beam at two ends has pull bar.Simplify strutting system, significantly alleviate weight support frame.
Description
Technical field
The present invention relates to a kind of science of bridge building technology, particularly relate to a kind of self-balancing arc beam cast-in-place support and construction party thereof
Method.
Background technology
In Bridge Construction technical field, the bridge architecture such as And of Varying Depth prestressed concrete continuous beam and continuous rigid frame is often adopted
One of construction method be to plan to build the cast-in-situ construction of scene, bridge position.This kind of bridge cast-in-situ support one
As use multispan beam pillar cast-in-place support, i.e. use steel pipe, other rod member or component as temporary rest pier, direction across bridge with
One determining deviation arranges many, and temporary rest pier is arranged direction across bridge crossbeam, and crossbeam is one group with 2, Bailey beam, reassembling type purlin
The existing standard equipments such as beam, universal rod body or six or four formula railway recovery girder steels are taked multi-disc to spell prescription formula and are done beam portion, beam portion
Two ends are supported on crossbeam, and horizontal plane is typically made in beam portion, apply one layer of I-steel or channel-section steel etc. the most again as cross-bridges
To distribution beam, distribution beam is done total sub-semigroup, total sub-semigroup along bridge to direction across bridge with a determining deviation cloth
Put, it is well known that it is various that total sub-semigroup utilizes himself base and jacking to be adapted at the bottom of the longitudinal gradient of bridge and beam
The design curve form of function.
This cast-in-place support needs to use two or more standard equipments simultaneously, uses multiple structure form, between each layer
Connecting difficulty big, complexity is high, when construction, alignment control difficulty for Cheng Qiao is big, when especially pier height is bigger,
Implement difficulty bigger.
Summary of the invention
It is an object of the invention to provide a kind of simple in construction, lightweight self-balancing arc beam cast-in-place support and construction party thereof
Method.
It is an object of the invention to be achieved through the following technical solutions:
The self-balancing arc beam cast-in-place support of the present invention, including the bracket being located on bridge pier, on described bracket, direction across bridge is provided with
Crossbeam, Curved beam includes arc structure and lower arc structure, by six or four beam standards between described upper arc structure and lower arc structure
Trigonometric sum T-shaped montant connects into truss structure, and being respectively arranged at two ends with of described truss structure is adjusted across end framework, described Curved beam
Be respectively fixed at two ends with anchor beam frame on described crossbeam, connecting between the anchor beam at two ends has pull bar.
The construction method of the above-mentioned self-balancing arc beam cast-in-place support of the present invention, including step:
In pier shaft concreting process, bracket is installed；
Bracket is installed crossbeam；
With six or four beam standard triangles, T-shaped montant, adjusting to spell to form across end framework and organize Curved beam more, integral hoisting is installed to successively
On crossbeam；
Installing anchor beam and pull bar, symmetrical stretch-draw pull bar is to builder's tonnage successively；
Curved beam top distribution beam is installed, distribution beam places beam sandbag, installation form system on sandbag；
After concreting stretch-draw prestressing force complete, sandbag puts sand, and fall frame, extracts template system successively out；
Curved beam the most traversing go out bridge location, hang bridge location, remove substructure.
As seen from the above technical solution provided by the invention, cast-in-place of the self-balancing arc beam that the embodiment of the present invention provides
Frame and construction method thereof, owing to including the bracket being located on bridge pier, on bracket, direction across bridge is provided with crossbeam, and Curved beam includes
Arc structure and lower arc structure, connect into truss by six or four beam standard trigonometric sum T-shaped montants between upper arc structure and lower arc structure
Structure, truss structure be respectively arranged at two ends with tune across end framework, Curved beam be respectively fixed at two ends with anchor beam frame in crossbeam
On, connect between the anchor beam at two ends and have pull bar.Simplify strutting system, significantly alleviate weight support frame.
Accompanying drawing explanation
The longitudinal plane structure schematic diagram of the self-balancing arc beam cast-in-place support that Fig. 1 provides for the embodiment of the present invention.
The cross-sectional configuration schematic diagram of the self-balancing arc beam cast-in-place support that Fig. 2 provides for the embodiment of the present invention.
Fig. 3 is the structural representation of six or four beam standard triangles in the embodiment of the present invention.
Fig. 4 is the structural representation of T-shaped montant in the embodiment of the present invention.
Fig. 5 is to adjust the structural representation across end framework in the embodiment of the present invention.
Fig. 6 is the structural representation of anchor beam in the embodiment of the present invention.
In figure:
1-six or four beam standard triangle, 2-T shape montant, 3-adjust across end framework, 4-pull bar, 5-anchor beam, 6-crossbeam, 7-bracket,
8-bridge pier, 9-And of Varying Depth prestressed concrete box shape continuous beam.
Detailed description of the invention
The embodiment of the present invention will be described in further detail below.
The self-balancing arc beam cast-in-place support of the present invention, its preferably detailed description of the invention is:
Including the bracket being located on bridge pier, on described bracket, direction across bridge is provided with crossbeam, and Curved beam includes arc structure and lower arc
Structure, connects into truss structure by six or four beam standard trigonometric sum T-shaped montants between described upper arc structure and lower arc structure, institute
State truss structure be respectively arranged at two ends with tune across end framework, described Curved beam be respectively fixed at two ends with anchor beam frame in described
On crossbeam, connect between the anchor beam at two ends and have pull bar.
Described anchor beam is box structure, thereon perforate, and the end anchorage of described pull bar is in described perforate.
Many described pull bars are arranged at direction across bridge.
Described pull bar is prestressed draw-bar.
The construction method of the self-balancing arc beam cast-in-place support of the present invention, its preferably detailed description of the invention is:
Including step:
In pier shaft concreting process, bracket is installed；
Bracket is installed crossbeam；
With six or four beam standard triangles, T-shaped montant, adjusting to spell to form across end framework and organize Curved beam more, integral hoisting is installed to successively
On crossbeam；
Installing anchor beam and pull bar, symmetrical stretch-draw pull bar is to builder's tonnage successively；
Curved beam top distribution beam is installed, distribution beam places beam sandbag, installation form system on sandbag；
After concreting stretch-draw prestressing force complete, sandbag puts sand, and fall frame, extracts template system successively out；
Curved beam the most traversing go out bridge location, hang bridge location, remove substructure.
The ultimate principle of the present invention is:
As shown in Figure 1 and Figure 2, using existing standard reserve stock is main member, is aided with a small amount of new tooling member, by former
The cast-in-place support spelling composition form of straight lines is assembled into the Curved beam of curve at the bottom of matching beam, and realizes arc by pull bar
Beam Equilibrium, without outside anti-thrust block.Self-balancing arc beam two ends are supported in the cattle being fixed on pier shaft side
On lower limb, substitute a large amount of temporary rest pier steel pipe.
Six or four beam standard triangles, T-shaped montant, tune are across holding framework, anchor beam respectively as shown in Fig. 3～Fig. 6.Six or four beam triangle systems
The main member of six or four formula railway recovery girder steels of deposit, mainly comprises component for Curved beam.T-shaped montant and tune are across end structure
Frame is a small amount of component needing individually processing.Anchor beam can use box structure, thereon perforate, for anchoring rod.Arc
Ellbeam mainly uses six or four beam standard triangles to spell group, and T-shaped montant plays regulation Curved beam curvature and realizes curve at the bottom of matching beam
Effect, adjusts and can regulate the span of Curved beam across end framework and utilize its montant to be supported on crossbeam.Anchor beam is welded on tune
Across the two ends of end framework, for anchoring rod.Rod anchor is at the two ends of Curved beam, as required, arranges at direction across bridge
Many, it is used for resisting the horizontal thrust of Curved beam, it is achieved the Equilibrium of Curved beam, to pull bar Shi Hanzhang, in order to
Adjust the camber of Curved beam.
Bracket is arranged at permanent pier side, and it places crossbeam, and crossbeam is as the bearing of Curved beam.
Below in conjunction with the accompanying drawings the structure of the present invention is described in detail:
As shown in Figures 1 to 6, four formula railway recovery girder steels are a kind of pin joint structures, easy to connect, rapid, a kind of from flat
Weighing apparatus Curved beam cast-in-place support utilizes six or four beam standard triangles 1 to carry out spelling group for main member, and six or four beam standard triangles 1 are with pin-and-hole
Centre-to-centre spacing computational length is 4m, height is 1.5m, and width is 0.52m, and after being assembled into bilayer, its height is 3m.According to need
Want, arrange some groups at direction across bridge, between each group, use channel-section steel and U bolt to connect integral.T-shaped montant 2 is one
The rod member similar with six or four beam chord members, but its " T-shaped " upper end sets two pin-and-holes, is arranged on six or four beam standard triangles 1 and winds up
Between bar node, making lengthening of winding up, form arc, " T-shaped " lower end sets a pin-and-hole, merges under being arranged on accordingly
At chord node pin-and-hole, it is ensured that the stability of total.Adjust the two ends being in Curved beam across end framework 3, be used for regulating arc
The length of beam, and form support node, it being supported on crossbeam 6, crossbeam 6 is installed on bracket 7.Bracket 7 is installed on pier shaft
Side, determines the most as required.
Curved beam can produce horizontal thrust at tune under load action at the fulcrum of end framework 3, and pull bar 4 is used for resisting this
Horizontal thrust, forms self equilibrium systems.As required, pull bar 4 arranges some at direction across bridge, utilizes anchor beam 5 to carry out anchor
Gu.
The construction method of specific embodiment is:
(1) in pier shaft concreting process, bracket 7 is installed；(2) crossbeam 6 is installed on bracket 7；(3) use
Six or four beam standard triangles 1, T-shaped montant 2, tune are spelled composition across end framework 3 and are organized Curved beam more, and integral hoisting is installed to horizontal stroke successively
On beam 6；(4) installing anchor beam 5 and pull bar 4, symmetrical stretch-draw pull bar 4 is to builder's tonnage successively；(5) arc back is installed
Portion's distribution beam, distribution beam places beam sandbag, installation form system on sandbag；(6) concreting stretch-draw in advance should
After power completes, sandbag puts sand, and fall frame, extracts template system successively out；Curved beam the most traversing go out bridge location, hang bridge location,
Remove substructure.Construction completes.
Beneficial effects of the present invention can be summarized as four aspects:
(1) self-balancing arc beam cast-in-place support mainly uses reserve stock six or four beam standard triangle to spell group, is aided with a small amount of T
Shape montant and tune, across end framework, curve at the bottom of the beam of matching And of Varying Depth beam, they are directly laid distribution beam and template system, are taken
Bowl button support that the usual support that disappeared also needs at an upper portion thereof and bearing beam system thereof, simplify strutting system, significantly alleviate
Weight support frame.
(2) Curved beam mainly uses a kind of component that is 64 beam standard triangle spelling group rather than the multiple types generally used
Group spelled by equipment, and linear being easier to of Cast-in-situ Beam is guaranteed.
(3) pull bar is used to overcome the horizontal force that support produces, it is achieved that self-balancing, it is not necessary to opposing thrust bearing.
(4) bracket instead of normally used steel pipe post, saves the great deal of steel that buttress system is used.
Specific embodiment one:
(1) in pier shaft concreting process, the big mileage and little mileage direction of pier shaft are respectively mounted at least 2
Bracket 7；(2) on bracket 7, direction across bridge installs the crossbeam 6 that at least 2 as a group；(3) by multiple six or four beam standards
Triangle 1, multiple T-shaped montant 2, multiple tune are spelled composition across end framework 3 and are organized Curved beam more, and integral hoisting is installed to crossbeam 6 successively
On；(4) installing anchor beam 5 and Duo Gen pull bar 4 in termination, rack beams portion, every hole, symmetrical stretch-draw pull bar 4 is to design ton successively
Position；(5) Curved beam top distribution beam is installed, distribution beam places beam sandbag, installation form system on sandbag；
(6) after concreting stretch-draw prestressing force complete, sandbag puts sand, and fall frame, extracts template system successively out；Curved beam depends on
Secondary traversing go out bridge location, hang bridge location, remove substructure.Construction completes.
Specific embodiment two:
In embodiment one, can be cancelled by bracket 7, instead steel pipe buttress, steel pipe buttress is supported on cushion cap or ground
On face.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope of present disclosure, the change that can readily occur in or replace
Change, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be with claims
Protection domain is as the criterion.
Claims (5)
1. a self-balancing arc beam cast-in-place support, it is characterised in that include the bracket being located on bridge pier, on described bracket
Direction across bridge is provided with crossbeam, and Curved beam includes arc structure and lower arc structure, passes through between described upper arc structure and lower arc structure
Six or four beam standard trigonometric sum T-shaped montants connect into truss structure, and being respectively arranged at two ends with of described truss structure is adjusted across end framework,
Described Curved beam be respectively fixed at two ends with anchor beam frame on described crossbeam, connecting between the anchor beam at two ends has pull bar.
Self-balancing arc beam cast-in-place support the most according to claim 1, it is characterised in that described anchor beam is box-shaped knot
Structure, thereon perforate, the end anchorage of described pull bar is in described perforate.
Self-balancing arc beam cast-in-place support the most according to claim 2, it is characterised in that arrange many at direction across bridge
Described pull bar.
Self-balancing arc beam cast-in-place support the most according to claim 3, it is characterised in that described pull bar is prestressing force
Pull bar.
5. a construction method for the self-balancing arc beam cast-in-place support described in any one of Claims 1-4, its feature exists
In, including step:
In pier shaft concreting process, bracket is installed；
Bracket is installed crossbeam；
With six or four beam standard triangles, T-shaped montant, adjusting to spell to form across end framework and organize Curved beam more, integral hoisting is installed to successively
On crossbeam；
Installing anchor beam and pull bar, symmetrical stretch-draw pull bar is to builder's tonnage successively；
Curved beam top distribution beam is installed, distribution beam places beam sandbag, installation form system on sandbag；
After concreting stretch-draw prestressing force complete, sandbag puts sand, and fall frame, extracts template system successively out；
Curved beam the most traversing go out bridge location, hang bridge location, remove substructure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510162014.8A CN104805769B (en) | 2015-04-07 | 2015-04-07 | A kind of self-balancing arc beam cast-in-place support and construction method thereof |
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| CN201510162014.8A CN104805769B (en) | 2015-04-07 | 2015-04-07 | A kind of self-balancing arc beam cast-in-place support and construction method thereof |
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| CN104805769B true CN104805769B (en) | 2016-08-24 |
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| CN105839540B (en) * | 2016-04-29 | 2023-06-13 | 贵州大通路桥工程建设有限公司 | Setting method and composition structure of No. 0 section non-welding bracket of rigid frame bridge |
| CN105839541B (en) * | 2016-04-29 | 2023-06-09 | 贵州大通路桥工程建设有限公司 | Construction method and structure of No. 0 section non-welding bracket of rigid frame bridge |
| CN107245950A (en) * | 2017-06-22 | 2017-10-13 | 中铁十五局集团有限公司 | Bridge falling structure and bridge falling method with same |
| CN111827119B (en) * | 2020-07-15 | 2022-05-17 | 中国建筑土木建设有限公司 | Connecting structure of cast-in-situ variable cross-section beam body formwork and construction method thereof |
| CN112878204A (en) * | 2021-02-04 | 2021-06-01 | 湖南省第六工程有限公司 | Construction process of cast-in-place anchor beam hanger system |
| CN113897870B (en) * | 2021-10-15 | 2022-07-08 | 广西路桥工程集团有限公司 | Assembled longitudinal beam, assembled buttress-free support, assembled buttress-free system and design method of assembled longitudinal beam and assembled buttress-free support |
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