CN101532276B - Method for rebuilding simply-supported beam bridge into semi-integral bridge abutment beam - Google Patents
Method for rebuilding simply-supported beam bridge into semi-integral bridge abutment beam Download PDFInfo
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- CN101532276B CN101532276B CN2009100255404A CN200910025540A CN101532276B CN 101532276 B CN101532276 B CN 101532276B CN 2009100255404 A CN2009100255404 A CN 2009100255404A CN 200910025540 A CN200910025540 A CN 200910025540A CN 101532276 B CN101532276 B CN 101532276B
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000004567 concrete Substances 0.000 claims abstract description 24
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 230000002787 reinforcement Effects 0.000 claims description 15
- 238000005520 cutting process Methods 0.000 claims description 10
- 210000003205 muscle Anatomy 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000010354 integration Effects 0.000 claims description 4
- 230000014759 maintenance of location Effects 0.000 claims description 4
- 230000013011 mating Effects 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 3
- 210000002421 cell wall Anatomy 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims 1
- 239000011384 asphalt concrete Substances 0.000 abstract description 4
- 230000007774 longterm Effects 0.000 abstract description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract 2
- 230000009191 jumping Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000011150 reinforced concrete Substances 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
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Abstract
The invention relates to a method for rebuilding a simply-supported beam bridge into a semi-integral bridge abutment beam. The method comprises the following steps: (1) measuring and lofting, namely lofting a linear sample parallel to a dilatation joint to two sides of the direction of the dilatation joint between a primary simply-supported beam bridge abutment and a bridge main beam respectively; (2) lancing and grooving, chiseling and cleaning, namely lancing and grooving along the two linear samples, chiseling primary asphalt concrete and integral concrete on a bridge deck among the grooves, and cleaning the wall and the bottom of the grooves; (3) manufacturing and installing a reinforcing mat, namely welding one end of the reinforcing mat and a primary U-shaped reinforcing steel bar of the abutment back, and binding and connecting the other end of the reinforcing mat and the primary paved and reserved reinforcing steel bar of the bridge deck; (4) pouring concrete; and (5) curing. The method efficiently eliminates the hidden safety troubles such as jumping at the bridge head and the like caused by the damage of the dilatation joint of the primary simply-supported beam bridge, nearly does not need to maintain beam bridge after long-term use, is simple to rebuild and construct, has lower invested funds, and has popularization and application values for middle and small simply-supported beam bridges of reinforced concrete.
Description
Technical field
The present invention relates to the highway bridge renovation technique, particularly a kind of method that simply supported girder bridge is transformed into semi-monolithic formula abutment bridge.
Background technology
At present in the numerous highway bridge of China, simply supported girder bridge accounts for the overwhelming majority.Be formed by connecting by bearing, shrinkage joint and device thereof between the abutment of simply supported girder bridge and the girder, belong to the separate type abutment.The separate type abutment can cause the damage of shrinkage joint and device thereof inevitably through long-term use, causes bumping at bridge-head, jeopardizes traffic safety.Yet maintenance, the replacement cost of shrinkage joint and device thereof are higher, and the time of maintenance is also longer, and construction period also must suspend traffic.Even be replaced with new expansion gap device, still face inevitably old expansion gap device intrinsic the problems referred to above.
Summary of the invention
The present invention proposes the method that a kind of simply supported girder bridge is transformed into semi-monolithic formula abutment bridge, purpose is at the existing shrinkage joint of simply supported girder bridge separate type abutment and installs problem fragile, maintenance inconvenience, by transforming the connected mode of simply supported girder bridge abutment and bridge girder, the platform back of the body place of abutment directly is connected with bridge girder, constitute the semi-monolithic formula abutment bridge at no shrinkage joint, to solve the intrinsic drawback that the separate type abutment must exist the shrinkage joint to be brought.
Technical solution of the present invention:
The step of the inventive method is as follows:
(1) measure setting-out:
To being reference line, respectively emit a straight line sample that is parallel to the shrinkage joint with the seam of the shrinkage joint between former simply supported girder bridge abutment and the bridge girder in the both sides of reference line.
(2) cleaning is slotted, cut to joint-cutting:
Along above-mentioned two the straight line sample joint-cuttings flutings that all are parallel to the shrinkage joint, cut the protobitumen concrete between two joint-cuttings and the bridge floor integration concrete that comprises reinforcing bar and the platform of below and carry on the back damaged concrete, to concrete coarse aggregate; Remove expansion gap device, and cleaning cell wall and bottom land.
(3) steel mesh reinforcement is made and is installed:
Make and install new steel mesh reinforcement, the U shaped steel muscle that steel mesh reinforcement one end and platform are carried on the back former setting welds, and the other end is connected do colligation with retention reinforcing bar after the former reinforcing bar of mating formation of bridge floor cuts.
(4) concreting;
(5) health.
Beneficial effect of the present invention:
(1) the present invention has thoroughly eliminated former simply supported girder bridge separate type abutment shrinkage joint and shrinkage joint breakage that device brought has been set, and causes potential safety hazards such as bumping at bridge-head;
(2) the alleged semi-monolithic formula abutment of the present invention needs repairing in long-term use hardly, has reduced the bridge inspection and maintenance total cost;
(3) the inventive method construction is simple, transforms simply supported girder bridge and injects capital into relatively low;
(4) the inventive method be applicable to steel concrete simply supported girder bridge, be generally foot bridge and jackshaft, in the highway bridge of China in this type of, foot bridge is numerous, so application value is arranged.
Description of drawings
Accompanying drawing 1 is the longitudinal profile structural representation of the semi-monolithic formula abutment of bridge that the present invention is transformed into;
Accompanying drawing 2 is the plane structure schematic diagram of made steel mesh reinforcement in the step of the present invention.
The specific embodiment
As shown in Figure 1, the semi-monolithic formula abutment bridge that the present invention was transformed into, its abutment and bridge floor, road surface connecting portion mainly comprise abutment 1, the abutment platform back of the body (also claiming parados in the industry) 2, steel mesh reinforcement 3, micro aggregate concrete 4, U shaped steel muscle 5, bearing 6, girder 7, attachment strap 8, bridge floor asphalt concrete layer 9, pavement asphalt concrete layer 10, bridge floor integration layer of concrete 11.
Below in conjunction with diagram, the specific embodiment of the inventive method is described:
(1) measures setting-out
Seam at the shrinkage joint is respectively emitted a straight line sample that is parallel to the shrinkage joint to the both sides of center line (shown among Fig. 1 is longitudinal centre line 12), wherein one be positioned at straight line sample that platform carries on the back 2 directions apart from the shrinkage joint seam to the about platform across back degree of center line, another straight line sample that is positioned at bridge floor 9 directions stitches apart from the shrinkage joint to the about 50CM of center line, article two, distance is the L shown in Fig. 1 between the parallel lines sample, and L is about 80CM.
(2) cleaning is slotted, cut to joint-cutting
Along above-mentioned two all be parallel to shrinkage joint seam to straight line sample joint-cutting, the about 10CM of the joint-cutting degree of depth (being the thickness of bridge floor asphalt concrete layer 9), cut the protobitumen concrete between two joint-cuttings, and remove former expansion gap device, continue to cut bridge floor integration bridge deck concrete layer 11 (herein when the beam body of noting being corrupted to girder 7) downwards; Remove the damaged concrete of the platform back of the body 2, till expose concrete coarse aggregate; With air compressor machine institute's fluting inwall, diapire are blown clean, and the water flushing, guarantee clean no-sundries in the groove.
(3) steel mesh reinforcement is made and is installed
As shown in Figure 1, 2, make steel mesh reinforcement 3, the arrangement of reinforcement number of steel mesh reinforcement and the number of plies of steel mesh reinforcement arrangement of reinforcement must be calculated according to the bridge force-bearing situation by the project planner and decide, and are two-layer reinforcing bar in the present embodiment.When steel mesh reinforcement was installed, the one end welded with the former U shaped steel muscle 5 that is provided with of the platform back of the body, and the other end is connected with retention reinforcing bar binding after the former reinforcing bar of mating formation of bridge floor cuts.
(4) concreting
Adopt 40# micro aggregate concrete scene to mix and stir and pour into a mould, wherein can add steel fibre, additive etc. in the material, with the concrete that mixes and stirs put into slot, vibrate with vibrating head, its cast height must be consistent with grade elevation, and concrete surface uses spatula floating again.
(5) health
Adopt to add double-deck covering of plastic sheeting on the moist gunnysack fluid concrete is carried out health, and in time on gunnysack, water equably, make concrete surface remain moistening shape.
Above construction sequence finishes, and when concrete reaches requiring of design strength with fixed attention, can open vehicle pass-through.
To sum up, this bridge remodeling method can reach the goal of the invention of expection.
Claims (4)
1. method that simply supported girder bridge is transformed into semi-monolithic formula abutment bridge, it is characterized in that: steps of the method are: (one) measures setting-out, to being reference line, respectively emit a straight line sample that is parallel to the shrinkage joint with the seam of the shrinkage joint between former simply supported girder bridge abutment and the bridge girder in the both sides of reference line; (2) cleaning is slotted, cut to joint-cutting, along above-mentioned two the straight line sample joint-cutting flutings that all are parallel to the shrinkage joint, cut the protobitumen concrete between two joint-cuttings and the bridge floor integration concrete that comprises reinforcing bar and the platform of below and carry on the back damaged concrete, to concrete coarse aggregate, remove expansion gap device, and cleaning cell wall and bottom land; (3) steel mesh reinforcement is made and is installed, and the U shaped steel muscle that steel mesh reinforcement one end and platform are carried on the back former setting welds, and the other end is connected do colligation with retention reinforcing bar after the former reinforcing bar of mating formation of bridge floor cuts; (4) concreting; (5) health.
2. a kind of method that simply supported girder bridge is transformed into semi-monolithic formula abutment bridge according to claim 1, it is characterized in that: described measurement setting-out be with shrinkage joint seam to center line be reference line, the straight line sample that both sides respectively emit wherein one be positioned at platform back of the body direction, apart from the shrinkage joint seam to the about platform across back degree of center line; Another is positioned at the bridge floor direction, and to the about 50CM of center line, distance is about 80CM between two parallel lines samples apart from the shrinkage joint seam.
3. a kind of method that simply supported girder bridge is transformed into semi-monolithic formula abutment bridge according to claim 1, it is characterized in that: described steel mesh reinforcement is installed the one end and is welded with the platform former U of the setting shaped steel muscle of the back of the body (5), and the other end is connected with retention reinforcing bar binding after the former reinforcing bar of mating formation of bridge floor cuts.
4. according to claim 1ly a kind of simply supported girder bridge is transformed into the method for semi-monolithic formula abutment bridge, it is characterized in that: described concreting is to adopt 40# micro aggregate concrete scene to mix and stir and pour into a mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100255404A CN101532276B (en) | 2009-02-09 | 2009-02-09 | Method for rebuilding simply-supported beam bridge into semi-integral bridge abutment beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100255404A CN101532276B (en) | 2009-02-09 | 2009-02-09 | Method for rebuilding simply-supported beam bridge into semi-integral bridge abutment beam |
Publications (2)
| Publication Number | Publication Date |
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| CN101532276A CN101532276A (en) | 2009-09-16 |
| CN101532276B true CN101532276B (en) | 2011-04-27 |
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| CN2009100255404A Expired - Fee Related CN101532276B (en) | 2009-02-09 | 2009-02-09 | Method for rebuilding simply-supported beam bridge into semi-integral bridge abutment beam |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852086A (en) * | 2012-10-09 | 2013-01-02 | 福州大学 | High-performance semi-integral abutment structure and construction method thereof |
| CN105672139B (en) * | 2016-04-14 | 2018-07-13 | 中铁二局集团有限公司 | A kind of bridge hollow pier binds construction |
| CN105970800B (en) * | 2016-05-23 | 2017-12-26 | 长安大学 | The abutment connecting structure and its construction method of monoblock type combination beam is seamless bridge |
| CN109137726A (en) * | 2018-09-28 | 2019-01-04 | 苏州同尚工程设计咨询有限公司 | A kind of expanded joint structure and its implementation method suitable for bridge |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020043082A (en) * | 2000-12-01 | 2002-06-08 | 김정현 | Juck-supporting apparatus for mending and substituting for the bearing structure and the bearing apparatus of a bridge with its established performance |
| CN1851139A (en) * | 2006-05-19 | 2006-10-25 | 成都亿通达实业发展有限公司 | Bridge pad repair method |
| CN101148862A (en) * | 2007-10-16 | 2008-03-26 | 中铁大桥局集团第四工程有限公司 | Pier body cap cracking body outside stress reinforcing method |
| CN101191324A (en) * | 2007-09-13 | 2008-06-04 | 北京公联洁达公路养护工程有限公司 | Exchanging of plate-type rubber supporting on highway bridge abutment by using template positioning method |
-
2009
- 2009-02-09 CN CN2009100255404A patent/CN101532276B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020043082A (en) * | 2000-12-01 | 2002-06-08 | 김정현 | Juck-supporting apparatus for mending and substituting for the bearing structure and the bearing apparatus of a bridge with its established performance |
| CN1851139A (en) * | 2006-05-19 | 2006-10-25 | 成都亿通达实业发展有限公司 | Bridge pad repair method |
| CN101191324A (en) * | 2007-09-13 | 2008-06-04 | 北京公联洁达公路养护工程有限公司 | Exchanging of plate-type rubber supporting on highway bridge abutment by using template positioning method |
| CN101148862A (en) * | 2007-10-16 | 2008-03-26 | 中铁大桥局集团第四工程有限公司 | Pier body cap cracking body outside stress reinforcing method |
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| CN101532276A (en) | 2009-09-16 |
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Granted publication date: 20110427 Termination date: 20120209 |