CN104532759A - Two-way curved arch bridge floor broadening and reinforcing process method - Google Patents
Two-way curved arch bridge floor broadening and reinforcing process method Download PDFInfo
- Publication number
- CN104532759A CN104532759A CN201410674641.5A CN201410674641A CN104532759A CN 104532759 A CN104532759 A CN 104532759A CN 201410674641 A CN201410674641 A CN 201410674641A CN 104532759 A CN104532759 A CN 104532759A
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- bridge floor
- arch
- concrete
- bridge
- expansion joint
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D4/00—Arch-type bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a two-way curved arch bridge floor broadening and reinforcing process method. The two-way curved arch bridge floor broadening and reinforcing process method comprises the steps of (a) dismounting an original bridge floor concrete road surface and then respectively dismounting a part of curved cavity padding and side walls; (b) conducting bar embedding and concrete filling on two-way curved arch tiles on two sides; (c) installing steel bar concrete cushion blocks with inverted trapezoidal structures at the upper portions of the side walls and then casting a concrete filling-leveling layer on the top face of the curved cavity padding; (d) adopting a prestressed concrete cast-in-place cantilever mode to wholly casting concrete on the concrete filling-leveling layer and meanwhile arranging multiple expansion joints and contraction joints; (e) performing bridge floor conduction including a sidewalk system. By means of the two-way curved arch bridge floor broadening and reinforcing process method, the bearing performance of a bridge can be remarkably improved, bridge floor congestion can be effectively relieved, and meanwhile the two-way curved arch bridge floor broadening and reinforcing process method has the advantages of being convenient to construct, large in bridge floor broadening proportion, capable of remarkably improving side arch bearing capacity, good in reinforcing effect and the like.
Description
Technical field
The invention belongs to bridge road and build technical field of construction, more specifically, what relate to a kind of double curvature arched bridge bridge floor widens reinforcement process method.
Background technology
Double curvature arched bridge is the arch bridge bridge type of domestic common employing, and this bridge type is owing to possessing the features such as easy construction, good looking appearance, materials province, and thus multiple area obtains and builds widely, to meet the needs of communications and transportation cause at home.But, growing due to the traffic volume, bridge deck width often cannot meet travel requirement, therefore needs badly and widens improvement; On the other hand, its bridge pier abutment design when building of these existing arch bridges is relatively conservative, and substructure supporting capacity has certain more than needed, and arch bridge structure self potentiality are very large, add the synergy of spandrel construction, that is fail to give full play to the supporting capacity of existing arch bridge; Correspondingly, be necessary, based on existing arch bridge structure, to be made full use of in transformation, carry out widening reinforcement process.
For above problem, current solution generally comprises removes newly-built and widens reinforcing two kinds of modes.For the former, due to arch bridge agent structure still preserve well, overall structure (particularly substructure) do not have large disease, simultaneously conical slope and the more intact double curvature arched bridge of bridge two lateral retaining wall are larger wastes, therefore newly building bridge is not only invested greatly, and aesthetic property, is difficult to compared with old bridge with the coordination of environment; For the latter, the double curvature arched bridge bridge floor of prior art is widened reinforcing method and is tended to reinforce for arch-wave or arch rib comprehensively, and it is large that it widens reinforcing area, superstructure dead load is bigger than normal, costly, construct more complicated and the time is long, be therefore necessary to be optimized it and to improve.
Summary of the invention
For above defect or the Improvement requirement of prior art, what the invention provides a kind of double curvature arched bridge bridge floor widens reinforcement process method, wherein by the design feature in conjunction with double curvature arched bridge self, the critical process step of reinforcing is widened to it and operational means is studied and designed, significantly should be able to increase the load-carrying properties of bridge mutually, effective alleviation bridge floor blocks up, and possesses constructability simultaneously, bridge floor widens that ratio is large, limit arch rib supporting capacity increases substantially and the advantage such as consolidation effect is good.
For achieving the above object, according to the present invention, what provide a kind of double curvature arched bridge bridge floor widens reinforcement process method, and it is characterized in that, the method comprises the following steps:
A () removes the original bridge deck concrete road surface of double curvature arched bridge, then by the arch chamber filling surface planing on the downside of this rigid pavement, the side wall being positioned at these filler both sides, arch chamber is removed a part, to reserve casting space on the top of each side wall simultaneously;
B () is being arranged in multiple arch-waves of filler bottom, described arch chamber, the limit arch-wave being in left and right sides marginal position is selected to carry out bar planting, by bed die Suspending fixation on limit arch-wave and limit arch rib thereof, then to these two limit arch-wave fill concretes, health reaches after design strength until concrete removes bed die;
C (), in the casting space that step (a) side wall top reserves, builds the steel concrete cushion block in inverted trapezoidal structure respectively, then fill and lead up layer at the end face concreting of described arch chamber filler;
D (), at the arranged outside support of described side wall, the mode then filling and leading up the upside employing prestressed concrete cantilever pouring of layer at described steel concrete cushion block and described concrete performs monobloc cast; And in this operating process, left and right bearing of trend along bridge floor arranges the first expansion joint (E.J.), the second expansion joint (E.J.) and contracting seam respectively, wherein the first expansion joint (E.J.) is set up and is positioned at bridge floor position, Dun Ding place, second expansion joint (E.J.) is set up and is positioned at bridge floor position, vault both sides place, and contracting seam is then symmetrical arranged between the first expansion joint (E.J.) and the second expansion joint (E.J.);
E () is last, after the concrete of monobloc cast reaches design strength, carry out the Roadway Construction comprising walkway system, completes overall double curvature arched bridge bridge floor thus and expands reinforcement process.
As further preferably, in step (d), by adopting the mode of prestressed concrete cantilever pouring, the bridge deck width after widening was compared with originally broadening more than 60%, and the structure below bridge floor is not widened.
As further preferably, in step (d), preferably at arranged outside diagonal support or the bridge floor suspension bracket of described side wall, then perform described prestressed concrete cantilever pouring.
As further preferably, for first, second expansion joint (E.J.) described, the part that its bottom surface contacts with described arch chamber filler is provided with asphaltic felt, and middle part is provided with waterstop, and fills out asphalt cement in this expansion joint (E.J.).
In general, the above technical scheme conceived by the present invention compared with prior art, mainly possesses following technological merit:
1, by selecting limit arch-wave and designing inner technological operation of filling steel concrete to it, test shows cross-sectional strength and the rigidity that significantly can strengthen bridge, particularly effectively can resist the moment of torsion attached by long cantilever prestressed concrete plate opposite side arch rib under bridge floor unbalance loading operating mode, and construction is simple, consolidation effect is good;
2, by arranging steel concrete inverted trapezoidal cushion block on side wall top, significantly reducing the risk that Root Stress concentrations is brought, being conducive to the prestressed concrete cantilever pouring operation in subsequent construction simultaneously;
3, by adopting the concrete integral slab of prestressed concrete cantilever pouring to replace original concrete bridge deck structure, prestressing force can be made full use of to realize great cantilever, and plate hight is little, with set up compared with other widening modes such as arch rib, it is very little that the present invention increases superstructure dead load, easy construction, good integrity, and the bridge floor that can obtain up to more than 60% widens ratio;
4, by bridge floor preferred arrangement water-proof type expansion joint (E.J.) and contracting seam, effectively can discharge prestressing force long cantilever bridge deck and be out of shape the second inner force produced, guarantee the free deformation of top and the bottom structure;
5, according to of the present invention widen natural resource that reinforcement process not only can avoid bridging toughening and reconstruction to bring, social resources repeat in a large number consume, alleviate environment pollution, and possess constructability and many-sided advantage such as consolidation effect is good, thus possess actual application prospect widely.
Accompanying drawing explanation
Fig. 1 is for showing according to the generalized section widening reinforcement process operation of the present invention;
Fig. 2 is the preferred arrangement schematic diagram according to expansion joint (E.J.) of the present invention and contracting seam;
Fig. 3 a and 3b is the organigram for showing the first and second expansion joint (E.J.)s according to the preferred embodiment of the present invention respectively;
In all of the figs, identical Reference numeral is used for representing identical element or structure, wherein:
1-prestressing force long cantilever plate; 2-prestressed strand; Layer filled and led up by 3-concrete; 4-steel concrete cushion block in inverted trapezoidal; 5-for limit arch-wave fill steel concrete; 6-limit arch rib; 7-limit arch-wave; 8-side wall; 9-arch chamber filler; 10-walkway system; 11-the first expansion joint (E.J.); 12-the second expansion joint (E.J.); The expansive concrete 25-that the cast-in-place bridge deck 24-of 13-contracting seam 20-asphalt cement 21-asphaltic felt 22-waterstop 23-fills is for enclosing for the back of the body
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.In addition, if below in described each embodiment of the present invention involved technical characteristic do not form conflict each other and just can mutually combine.
Fig. 1 is for showing according to the generalized section widening reinforcement process operation of the present invention.As shown in Figures 1 and 2, this is widened reinforcement process method and mainly comprises following operational sequence:
First, remove the bridge deck concrete road surface that double curvature arched bridge is original, then by the arch chamber filler 9 surface planing on the downside of this rigid pavement, the side wall 8 being positioned at these filler 9 both sides, arch chamber is removed a part, to reserve casting space on the top of each side wall simultaneously.
Then, be arranged in multiple arch-waves of filler bottom, described arch chamber, the limit arch-wave 7 being in left and right sides marginal position is selected to carry out bar planting, by bed die Suspending fixation on limit arch-wave 7 and limit arch rib 6 thereof, then to these two limit arch-wave fill concretes, health reaches after design strength until concrete removes bed die; By this operation, can be fixed on easily on arch rib and arch-wave, convenient construction; With regard to its effect, arch-wave inside, limit is filled steel concrete and is played reinforcement effect to bridge, main arch cross-sectional strength and rigidity can be substantially increased, in addition, the limit arch rib internal force produced under considering bridge floor uneven loading action is significantly greater than middle arch rib, and bears powerful unbalance loading torsional interaction, therefore fills steel concrete by limit arch-wave, both be conducive to strengthening limit arch rib, and avoided all arch-waves to fill the dead load brought simultaneously and increase substantially.
Then, in the casting space that side wall top reserves, build the steel concrete cushion block 4 in inverted trapezoidal structure respectively, then fill and lead up layer 3 at the end face concreting of described arch chamber filler 9; In this way, steel concrete cushion block had both improve local supporting capacity and had played stress dispersion effect, also effectively can avoid the damage of former bridge side wall 8.
Then, at the arranged outside support of side wall 8, the mode then filling and leading up the upside employing prestressed concrete cantilever pouring of layer 3 at steel concrete cushion block 4 and concrete performs monobloc cast; And in this operating process, left and right bearing of trend along bridge floor arranges the first expansion joint (E.J.) 11, second expansion joint (E.J.) 12 and contracting seam 13 respectively, wherein the quantity of the first expansion joint (E.J.) 11 is for example often encircle 2, and be set up and be positioned at bridge floor position, Dun Ding place, second expansion joint (E.J.) 12 is same is for example often encircle 2, and setting is positioned at bridge floor position, vault both sides place at certain intervals, contracting seam 13 is symmetrical arranged and is positioned between the first expansion joint (E.J.) (11) and the second expansion joint (E.J.) 12, and its quantity is for example often encircle 4.Widen method more than of the present invention according to employing, when widening substructure, bridge deck width is comparable originally broadening up to more than 60%; In addition, the water-proof type expansion or contraction joints of bridge floor preferred arrangement significantly releases structure second inner force, guarantees the free-extension of structure, avoids rainwater directly to penetrate into arch chamber inner simultaneously.
Finally, after the concrete of monobloc cast reaches design strength, carry out the Roadway Construction comprising walkway system, complete overall double curvature arched bridge bridge floor thus and expand reinforcement process.
In sum, by the design feature in conjunction with double curvature arched bridge self in the present invention, the critical process step of reinforcing is widened to it and operational means is studied and designed, significantly should be able to increase the load-carrying properties on bridge road mutually, effective alleviation bridge floor blocks up, possess the advantages such as constructability, expansion and consolidation effect be obvious simultaneously, thus possess application prospect widely.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. double curvature arched bridge bridge floor widen a reinforcement process method, it is characterized in that, the method comprises the following steps:
A () removes the original bridge deck concrete road surface of double curvature arched bridge, then by surface, arch chamber filler (9) planing on the downside of this rigid pavement, the side wall (8) being positioned at these filler (9) both sides, arch chamber is removed a part, to reserve casting space on the top of each side wall simultaneously;
B () is being arranged in multiple arch-waves of filler bottom, described arch chamber, the limit arch-wave (7) being in left and right sides marginal position is selected to carry out bar planting, by bed die Suspending fixation on limit arch-wave (7) and limit arch rib (6) thereof, then to these two limit arch-wave fill concretes, health reaches after design strength until concrete removes bed die;
C () is in the installing space that step (a) side wall top reserves, steel concrete cushion block (4) in inverted trapezoidal structure is installed respectively, then fills and leads up layer (3) at the end face concreting of described arch chamber filler (9);
D (), at the arranged outside support of described side wall (8), the mode then filling and leading up the upside employing prestressed concrete cantilever pouring of layer (3) described steel concrete cushion block (4) and described concrete performs monobloc cast; And in this operating process, left and right bearing of trend along bridge floor arranges the first expansion joint (E.J.) (11), the second expansion joint (E.J.) (12) and contracting seam (13) respectively, wherein the first expansion joint (E.J.) (11) is set up and is positioned at bridge floor position, Dun Ding place, second expansion joint (E.J.) (12) is set up and is positioned at bridge floor position, vault both sides place, and contracting seam (13) is then symmetrical arranged and is positioned between the first expansion joint (E.J.) (11) and the second expansion joint (E.J.) (12);
E () is last, after the concrete of monobloc cast reaches design strength, carry out the Roadway Construction comprising walkway system, completes overall double curvature arched bridge bridge floor thus and expands reinforcement process.
2. the method for claim 1, is characterized in that, in step (d), by adopting the mode of prestressed concrete cantilever pouring, the bridge deck width after widening was compared with originally broadening more than 60%, and the structure below bridge floor is not widened.
3. method as claimed in claim 1 or 2, is characterized in that, in step (d), preferably at arranged outside diagonal support or the bridge floor suspension bracket of described side wall (8), then perform described prestressed concrete cantilever pouring.
4. the method as described in claim 1-3 any one, is characterized in that, for first, second expansion joint (E.J.) described, the part that its bottom surface contacts with described arch chamber filler is provided with asphaltic felt, and middle part is provided with waterstop, and fills out asphalt cement in this expansion joint (E.J.).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410674641.5A CN104532759B (en) | 2014-11-21 | 2014-11-21 | A kind of double curvature arched bridge bridge floor widen reinforcement process method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410674641.5A CN104532759B (en) | 2014-11-21 | 2014-11-21 | A kind of double curvature arched bridge bridge floor widen reinforcement process method |
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| Publication Number | Publication Date |
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| CN104532759A true CN104532759A (en) | 2015-04-22 |
| CN104532759B CN104532759B (en) | 2015-08-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306667A (en) * | 2018-10-17 | 2019-02-05 | 中铁大桥局武汉桥梁特种技术有限公司 | A kind of double curvature arched bridge arch fill Demolition Construction method |
| CN111719447A (en) * | 2020-07-31 | 2020-09-29 | 保利长大工程有限公司 | Novel hyperbolic arch bridge deck widening and reinforcing method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107761540A (en) * | 2017-11-16 | 2018-03-06 | 中国水利水电第十工程局有限公司 | A kind of multi-joint upper filling construction method of steel flanged beam arch bridge arch of large span |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010216187A (en) * | 2009-03-18 | 2010-09-30 | Ihi Infrastructure Systems Co Ltd | Composite floor slab |
| CN102392421A (en) * | 2011-11-23 | 2012-03-28 | 武汉理工大学 | Small-town arch bridge local widening and reinforcing method based on characteristic of tidal traffic flow |
-
2014
- 2014-11-21 CN CN201410674641.5A patent/CN104532759B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010216187A (en) * | 2009-03-18 | 2010-09-30 | Ihi Infrastructure Systems Co Ltd | Composite floor slab |
| CN102392421A (en) * | 2011-11-23 | 2012-03-28 | 武汉理工大学 | Small-town arch bridge local widening and reinforcing method based on characteristic of tidal traffic flow |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306667A (en) * | 2018-10-17 | 2019-02-05 | 中铁大桥局武汉桥梁特种技术有限公司 | A kind of double curvature arched bridge arch fill Demolition Construction method |
| CN111719447A (en) * | 2020-07-31 | 2020-09-29 | 保利长大工程有限公司 | Novel hyperbolic arch bridge deck widening and reinforcing method |
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| Publication number | Publication date |
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| CN104532759B (en) | 2015-08-26 |
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Granted publication date: 20150826 Termination date: 20191121 |