CN103205930A - Structure for continuous transformation of existing simply supported hollow slab girder bridge and construction method of structure - Google Patents
Structure for continuous transformation of existing simply supported hollow slab girder bridge and construction method of structure Download PDFInfo
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Abstract
The invention relates to a structure for continuous transformation of an existing simply supported hollow slab girder bridge. The structure comprises two hollow slabs and a pier of the existing simply supported hollow slab girder bridge, wherein part of top plates and part of web plates of the two adjacent hollow slabs on the top of the pier are removed through chiseling along the bridge direction; a Y-shaped seam is formed between the end parts of the two chiseled hollow slabs; reinforcing steel bars are laid and concrete is poured in the Y-shaped seam to form a continuous section connected with the two hollow slabs; and a bridge deck pavement is poured on the two hollow slabs and the continuous section again. The invention also relates to a construction method for the continuous transformation of the simply supported hollow slab girder bridge. According to the invention, a feasible and effective guidance method is provided for the continuous transformation of the existing simply supported hollow slab girder bridge, complex construction caused by prestress is avoided, and splits are effectively avoided. The structure is favorable in integrity, has good quake-proof and collapse-proof effects in earthquakes, and has the advantages of simplicity and convenience in construction and strong durability.
Description
Technical field
The present invention relates to the building building technology field, structure and job practices thereof that especially a kind of existing freely-supported hollow slab beam bridge serialization is transformed.
Background technology
Simply supported girder bridge belongs to statically determinate structrue, and it has stressed clear and definite, simple structure, easy construction, maintenance easily and the differential settlement of ground does not produce characteristics such as additional internal force, applicable to the relatively poor relatively situation of geological conditions.The hollowcore slab simply supported girder bridge is built more in China, the porous simply supported girder bridge is the malformation that adaptive temperature changes and load action causes, on each bridge pier (platform) shrinkage joint will be set usually.Bridge expanssion joint is to be subject to most in the bridge construction to destroy and difficult position of repairing.China units concerned will once be investigated the present situation of its 242 bridge block expansion gap devices of administering at the beginning of 1989 end of the year to nineteen ninety, and what investigation result demonstration bridge expansion joint installation was intact is 62, only account for 26% of investigation sum, and the extent of damage is quite serious.The destruction at shrinkage joint will be reduced globality and the continuity of bridge floor to a great extent, causes very big vehicular impact load, worsens driving condition and traffic safety, and the application life of sharply reducing bridge.
In order to make bridge construction have preferably performance continuously, late 1970s has the people to propose the idea of " simply supported girder bridge serialization ".Simply supported girder bridge not only can effectively reduce or eliminate the shrinkage joint after serialization, obtain long continuous deck, but also have dead load freely-supported, the continuous design feature of mobile load.The building method of present existing realization simply supported girder bridge serialization comprises: bridge floor (plate) continuously, bridge floor (plate) continuously+wet seam and bridge floor (plate) continuously+wet seam+prestressing force etc.Though preceding two kinds of building methods can improve the phenomenon of bearing place bridge floor cracking to a certain extent, but because the continuous space of connector area is less, and the tensile strength of packing material (as concrete) is lower, therefore can't fundamentally resist simply supported beam and namely can cause the cracking of bridge floor equally in the hogging moment effect of joint generation in the back continuously; And bridge floor (plate) is though continuous+wet seam+prestressed building method can be avoided the cracking of bridge floor by applying local prestressing force, but this method construction is complicated, apply prestressing force among a small circle and cause stress raisers easily, loss of prestress is also bigger, and is used for relatively difficulty of old bridge transformation.
Summary of the invention
In order to overcome the deficiency that existing freely-supported hollowcore slab beam bridge lacks the serialization modification measures, technical problem to be solved by this invention provides structure and the job practices thereof that a kind of existing freely-supported hollow slab beam bridge serialization is transformed.
In order to solve the problems of the technologies described above, technical scheme of the present invention is: the structure that a kind of existing freely-supported hollow slab beam bridge serialization is transformed, the hollowcore slab and the bridge pier that comprise existing freely-supported hollowcore slab beam bridge, adjacent two hollowcore slabs in described bridge pier top respectively along bridge to cutting part top board and part web, form a Y shape seam between two hollowcore slab ends after cutting, be laid with reinforcing bar and build concrete to form the continuous segment that connects two hollowcore slabs in the described Y shape seam, build deck paving again on described two hollowcore slabs and the continuous segment.
Further, the length that cuts between described two hollowcore slab top boards is m, and the m value is the scope that hogging moment is arranged at continuous rear abutment top.
Further, described two hollowcore slab web upper ends cut the height value be top board to the distance of the stressed axis of hollowcore slab, described two hollowcore slab web upper ends along bridge to the length value that cuts be to cut height and cut length to form 1:3 gradient gradual transition to the distance of top board.
Further, the cutting of described two hollowcore slab web bottoms highly equals the height that cuts of upper end, described two hollowcore slab web bottoms along bridge to the length value that cuts be to cut height and cut length to form 1:3 gradient gradual transition to the distance of base plate.
Further, the width that cuts of described two hollowcore slab web both side ends is T=B/4, B is the hollowcore slab width of main beam, and the length value that cuts of described two hollowcore slab web both side ends is to cut width and cut the distance of length formation 1:4 gradient gradual transition to hollowcore slab web both sides.
All keep original reinforcing bar when further, described two hollowcore slabs cut part top board and part web.
Further, between described two blocks of hollowcore slab webs along bridge to the length of building be n=2H, H is hollowcore slab girder height.
Further, described reinforcing bar comprises connecting reinforcement, negative reinforcement and stirrup.
Further, described concrete is slightly expanded concrete.
Simultaneously, the job practices that the present invention also provides a kind of existing freely-supported hollow slab beam bridge serialization to transform, carry out according to the following steps: (1) cuts existing deck paving: cut the deck paving of existing freely-supported hollowcore slab beam bridge, carry out safety measure when cutting to avoid that hollowcore slab is caused damage; (2) cut the part hollowcore slab: cut part top board and the part web of hollowcore slab by designing requirement, form a Y shape seam between two hollowcore slab ends after cutting, should keep original reinforcing bar after cutting so that follow-up colligation welded reinforcement; (3) build continuous segment: mortar is built with the convenient follow-up template of setting up in the bottom between two adjacent hollowcore slabs, set up template at the top board that cuts and web position place, in Y shape seam, lay dowel, colligation negative reinforcement and stirrup, and stitch interior monobloc cast concrete to form the continuous segment that connects two hollowcore slabs toward Y shape; (4) build deck paving again: abundant plucking concrete interface before building, between hollowcore slab top board and deck paving, implant anchor bar, make that continuous improved hollow slab bridge panel and hollowcore slab are stressed better, on two hollowcore slabs and continuous segment, build deck paving again.
Further, in step (2), the length that cuts between described two hollowcore slab top boards is m, and the m value is the scope that hogging moment is arranged at continuous rear abutment top; Described two hollowcore slab web upper ends cut the height value be top board to the distance of the stressed axis of hollowcore slab, described two hollowcore slab web upper ends along bridge to the length value that cuts be to cut height and cut length to form 1:3 gradient gradual transition to the distance of top board.
Further, in step (2), the cutting of described two hollowcore slab web bottoms highly equals the height that cuts of upper end, described two hollowcore slab web bottoms along bridge to the length value that cuts be to cut height and cut length to form 1:3 gradient gradual transition to the distance of base plate.
Further, in step (2), the width that cuts of described two hollowcore slab web both side ends is T=B/4, B is the hollowcore slab width of main beam, and the length value that cuts of described two hollowcore slab web both side ends is to cut width and cut the distance of length formation 1:4 gradient gradual transition to hollowcore slab web both sides.
Further, in step (3), between described two blocks of hollowcore slab webs along bridge to the length of building be n=2H, H is hollowcore slab girder height, described concrete is slightly expanded concrete.
Compared with prior art, the present invention has following beneficial effect: the structure of this existing freely-supported hollow slab beam bridge serialization transformation and job practices thereof provide feasible, effective guidance method for existing freely-supported hollowcore slab bridge serialization transformation, can avoid loaded down with trivial details construction because adopt prestressing force bring along bridge to serialization by this method, and can avoid the appearance in crack effectively, girder can be held together continuously by top board, globality is relatively good.Because good integrity, therefore anti seismic efficiency is relatively good when earthquake takes place; And anti-fall beam effect is also relatively good, has advantages such as construction is simple and convenient, durability is strong, improvement cost is lower.
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the elevation of existing freely-supported hollowcore slab beam bridge.
Elevation when Fig. 2 is existing freely-supported hollow slab beam bridge serialization arrangement of reinforcement.
Fig. 3 is the profile at a-a place among Fig. 2.
Fig. 4 is the profile at b-b place among Fig. 2.
Fig. 5 is the profile at c-c place among Fig. 2.
Fig. 6 is the improved elevation of existing freely-supported hollow slab beam bridge serialization.
Fig. 7 is the profile at d-d place among Fig. 6.
Fig. 8 is the profile at e-e place among Fig. 6.
Fig. 9 is the profile at f-f place among Fig. 6.
1-hollowcore slab among the figure, 11-top board, 12-web, the stressed axis of 13-, 14-base plate, 2-bridge pier, 3-deck paving, 4-shrinkage joint, 5-Y shape seam, 6-mortar, 7-dowel, 8-negative reinforcement, 9-stirrup, 10-continuous segment, 15-U shape anchor bar.
The specific embodiment
Shown in Fig. 1 ~ 9, the structure that a kind of existing freely-supported hollow slab beam bridge serialization is transformed, the hollowcore slab 1 and the bridge pier 2 that comprise existing freely-supported hollowcore slab beam bridge, adjacent two hollowcore slabs 1 in described bridge pier 2 tops respectively along bridge to cutting part top board 11 and part web 12, form a Y shape seam 5 between two hollowcore slab 1 ends after cutting, be laid with reinforcing bar and build concrete to form the continuous segment 10 that connects two hollowcore slabs 1 in the described Y shape seam 5, build deck paving 3 again on described two hollowcore slabs 1 and the continuous segment 10.
In the present embodiment, the length that cuts between described two hollowcore slabs, 1 top board 11 is m, and the m value is the scope that hogging moment is arranged at continuous rear abutment 2 tops.Described two hollowcore slabs, 1 web 12 upper ends cut the height value be top board 11 to the distance of hollowcore slab 1 stressed axis, described two hollowcore slabs, 1 web 12 upper ends along bridge to the length value that cuts be to cut height and cut length to form 1:3 gradient gradual transition to the distance of top board.The cutting of described two hollowcore slab web bottoms highly equals the height that cuts of upper end, described two hollowcore slab web bottoms along bridge to the length value that cuts be to cut height and cut length to form 1:3 gradient gradual transition to the distance of base plate.The width that cuts of described two hollowcore slab web both side ends is T=B/4, B is the hollowcore slab width of main beam, and the length value that cuts of described two hollowcore slab web both side ends is to cut width and cut the distance of length formation 1:4 gradient gradual transition to hollowcore slab web both sides.Described two hollowcore slabs 1 all keep original reinforcing bar when cutting part top board 11 and part web 12.Between described two hollowcore slabs, 1 web 12 along bridge to the length of building be n=2H, H is hollowcore slab girder height.
In the present embodiment, described reinforcing bar comprises connecting reinforcement, negative reinforcement 8 and stirrup 9, and described concrete is slightly expanded concrete.
Shown in Fig. 1 ~ 9, the job practices that a kind of existing freely-supported hollow slab beam bridge serialization is transformed, carry out according to the following steps:
(1) cuts existing deck paving: cut the deck paving 3 of existing freely-supported hollowcore slab beam bridge, carry out safety measure when cutting to avoid that hollowcore slab 1 is caused damage;
(2) cut the part hollowcore slab: the part top board 11 and the part web 12 that cut hollowcore slab 1 by designing requirement, should calculate before cutting when hollowcore slab 1 cuts part top board 11 and part web 12 and whether satisfy naked beam stress requirement to determine whether the needs stent support, form a Y shape seam 5 between two hollowcore slab 1 ends after cutting, should keep original reinforcing bar after cutting so that follow-up colligation welded reinforcement;
(3) build continuous segment: mortar 6 is built with the convenient follow-up template of setting up in the bottom between two adjacent hollowcore slabs 1, set up template at the top board 11 that cuts and web 12 positions, in Y shape seam 5, lay dowel 7, colligation negative reinforcement 8 and stirrup 9, and stitch 5 interior monobloc cast concrete to form the continuous segment 10 that connects two hollowcore slabs 1 toward Y shape;
(4) build deck paving again: abundant plucking concrete interface before building, between hollowcore slab 1 top board 11 and deck paving 3, implant U-shaped anchor bar 15, make that continuous improved hollow slab bridge panel and hollowcore slab 1 are stressed better, on two hollowcore slabs 1 and continuous segment 10, build deck paving 3 again.
In step (2), the length that cuts between described two hollowcore slabs, 1 top board 11 is m, and the m value is the scope that hogging moment is arranged at continuous rear abutment 2 tops; Should cut in strict accordance with jumping the position when cutting part top board 11, the reply key position carries out strain, stress monitoring during construction, should stop construction if note abnormalities; Should keep original reinforcing bar after cutting part top board 11, so that follow-up reinforcing bar binding.
In step (2), described two hollowcore slabs, 1 web 12 upper ends cut the height value be top board 11 to the distance of hollowcore slab 1 stressed axis, described two hollowcore slabs, 1 web 12 upper ends along bridge to the length value that cuts be to cut height and cut length to form 1:3 gradient gradual transition to the distance of top board.In order to resist positive bending moment and to avoid stress to concentrate, the cutting of described two hollowcore slab web bottoms highly equals the height that cuts of upper end, described two hollowcore slab web bottoms along bridge to the length value that cuts be to cut height and cut length to form 1:3 gradient gradual transition to the distance of base plate.The wet seam in described bridge pier 2 tops and hollowcore slab 1 top board 11 adopt gradual change height section to increase the shear stiffness of this position, negative reinforcement 8 are set to improve the moment of flexure supporting capacity in this gradual change height section.
In step (2), in order to increase the effective web width of hollowcore slab and then to increase shear resistant capacity, the width that cuts of described two hollowcore slab web both side ends is T=B/4, B is the hollowcore slab width of main beam, and the length value that cuts of described two hollowcore slab web both side ends is to cut width and cut the distance of length formation 1:4 gradient gradual transition to hollowcore slab web both sides.
In step (3), between described two hollowcore slabs, 1 web 12 along bridge to build length namely wet seam to build length be n=2H, H is hollowcore slab girder height; Handle at end cutter hair before building, and implant connecting reinforcement; Wet seam bottom is provided with reinforcing bar, can increase the rigidity of continuous segment.
In step (3), in order to make better co-operation of new-old concrete, implant connecting reinforcement at the new-old concrete intersection.By setting up template at web 12 and top board 11 places, the colligation welded reinforcement, common concreting is an integral body to increase holistic resistant behavior.For the difference of the shrinkage and creep that reduces new-old concrete, it is slightly expanded concrete that hollowcore slab 1 cuts the concrete that part builds.
In step (4), described deck paving 3 adopts the high performance concrete of some tensions, for example polypropylene fiber concrete.
The present invention is not limited to above-mentioned preferred forms, and anyone can draw other various forms of existing freely-supported hollow slab beam bridge serialization forms of modification under enlightenment of the present invention.All equalizations of doing according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.
Claims (10)
1. structure that existing freely-supported hollow slab beam bridge serialization is transformed, the hollowcore slab and the bridge pier that comprise existing freely-supported hollowcore slab beam bridge, it is characterized in that: adjacent two hollowcore slabs in described bridge pier top respectively along bridge to cutting part top board and part web, form a Y shape seam between two hollowcore slab ends after cutting, be laid with reinforcing bar and build concrete to form the continuous segment that connects two hollowcore slabs in the described Y shape seam, build deck paving again on described two hollowcore slabs and the continuous segment.
2. the structure transformed of a kind of existing freely-supported hollow slab beam bridge serialization according to claim 1, it is characterized in that: the length that cuts between described two hollowcore slab top boards is m, and the m value is the scope that hogging moment is arranged at continuous rear abutment top.
3. the structure transformed of a kind of existing freely-supported hollow slab beam bridge serialization according to claim 1 and 2, it is characterized in that: described two hollowcore slab web upper ends cut the height value be top board to the distance of the stressed axis of hollowcore slab, described two hollowcore slab web upper ends along bridge to the length value that cuts be to cut height and cut length to form 1:3 gradient gradual transition to the distance of top board.
4. the structure transformed of a kind of existing freely-supported hollow slab beam bridge serialization according to claim 3, it is characterized in that: the cutting of described two hollowcore slab web bottoms highly equals the height that cuts of upper end, described two hollowcore slab web bottoms along bridge to the length value that cuts be to cut height and cut length to form 1:3 gradient gradual transition to the distance of base plate.
5. the structure transformed of a kind of existing freely-supported hollow slab beam bridge serialization according to claim 4, it is characterized in that: the width that cuts of described two hollowcore slab web both side ends is T=B/4, B is the hollowcore slab width of main beam, and the length value that cuts of described two hollowcore slab web both side ends is to cut width and cut the distance of length formation 1:4 gradient gradual transition to hollowcore slab web both sides.
6. the structure transformed of a kind of existing freely-supported hollow slab beam bridge serialization according to claim 1 is characterized in that: between described two blocks of hollowcore slab webs along bridge to the length of building be n=2H, H is hollowcore slab girder height.
7. the structure transformed of a kind of existing freely-supported hollow slab beam bridge serialization according to claim 1, it is characterized in that: described reinforcing bar comprises connecting reinforcement, negative reinforcement and stirrup, described concrete is slightly expanded concrete.
8. the job practices that existing freely-supported hollow slab beam bridge serialization is transformed is characterized in that, carries out according to the following steps:
(1) cuts existing deck paving: cut the deck paving of existing freely-supported hollowcore slab beam bridge, carry out safety measure when cutting to avoid that hollowcore slab is caused damage;
(2) cut the part hollowcore slab: cut part top board and the part web of hollowcore slab by designing requirement, form a Y shape seam between two hollowcore slab ends after cutting, should keep original reinforcing bar after cutting so that follow-up colligation welded reinforcement;
(3) build continuous segment: mortar is built with the convenient follow-up template of setting up in the bottom between two adjacent hollowcore slabs, set up template at the top board that cuts and web position place, in Y shape seam, lay dowel, colligation negative reinforcement and stirrup, and stitch interior monobloc cast concrete to form the continuous segment that connects two hollowcore slabs toward Y shape;
(4) build deck paving again: abundant plucking concrete interface before building, between hollowcore slab top board and deck paving, implant anchor bar, make that continuous improved hollow slab bridge panel and hollowcore slab are stressed better, on two hollowcore slabs and continuous segment, build deck paving again.
9. the job practices transformed of a kind of existing freely-supported hollow slab beam bridge serialization according to claim 8, it is characterized in that: in step (2), the length that cuts between described two hollowcore slab top boards is m, and the m value is the scope that hogging moment is arranged at continuous rear abutment top; Described two hollowcore slab web upper ends cut the height value be top board to the distance of the stressed axis of hollowcore slab, described two hollowcore slab web upper ends along bridge to the length value that cuts be to cut height and cut length to form 1:3 gradient gradual transition to the distance of top board; The cutting of described two hollowcore slab web bottoms highly equals the height that cuts of upper end, described two hollowcore slab web bottoms along bridge to the length value that cuts be to cut height and cut length to form 1:3 gradient gradual transition to the distance of base plate; The width that cuts of described two hollowcore slab web both side ends is T=B/4, B is the hollowcore slab width of main beam, and the length value that cuts of described two hollowcore slab web both side ends is to cut width and cut the distance of length formation 1:4 gradient gradual transition to hollowcore slab web both sides.
10. the job practices transformed of a kind of existing freely-supported hollow slab beam bridge serialization according to claim 8 is characterized in that: in step (3), between described two blocks of hollowcore slab webs along bridge to the length of building be n=2H, H is hollowcore slab girder height; Described concrete is slightly expanded concrete.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107818228A (en) * | 2017-11-20 | 2018-03-20 | 福州大学 | Assembly hollow slab bridges transverse stretching calculation of Prestress method |
| CN111424534A (en) * | 2020-05-14 | 2020-07-17 | 江西省高速公路投资集团有限责任公司 | Structure is simplified in continuous beam hogging moment district of concrete |
| CN112323655A (en) * | 2020-11-24 | 2021-02-05 | 南京梦联桥材料科技有限公司 | Reinforcing method for changing simple support of existing hollow plate beam into continuous support |
| WO2021088394A1 (en) * | 2019-11-04 | 2021-05-14 | 南京毛勒工程材料有限公司 | Pouring method for filler in anchorage zone of expansion joint |
| CN113774809A (en) * | 2021-09-30 | 2021-12-10 | 广东深已建设工程有限公司 | Construction method for continuous structure of simply supported beam bridge deck |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07133602A (en) * | 1993-11-10 | 1995-05-23 | Motonosuke Arai | Reconstructing method for expanding device section in road bridge |
| CN2477701Y (en) * | 2001-05-24 | 2002-02-20 | 周志祥 | Connecting structure of bridge having simple support varied as continuation |
| CN1494628A (en) * | 2000-06-08 | 2004-05-05 | 丘民世 | Method of constructing simple and continuous composite bridges |
| CN101298757A (en) * | 2008-06-13 | 2008-11-05 | 东南大学 | Method for changing old simple supported beam bridge into continuous beam bridge |
| CN101368374A (en) * | 2008-09-05 | 2009-02-18 | 东南大学 | Pretensioning method for converting old simply supported beam bridge into continuous bridge |
| CN101701448A (en) * | 2009-11-19 | 2010-05-05 | 潘志洪 | Bridge expansion joint structure |
| CN202090280U (en) * | 2011-05-16 | 2011-12-28 | 广东工业大学 | Simply supported-continuous device of concrete beam bridge |
| CN203256627U (en) * | 2013-04-25 | 2013-10-30 | 福州大学 | Continuously-transforming structure of existing simply-supporting hollow plate girder bridge |
-
2013
- 2013-04-25 CN CN201310147329.6A patent/CN103205930B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07133602A (en) * | 1993-11-10 | 1995-05-23 | Motonosuke Arai | Reconstructing method for expanding device section in road bridge |
| CN1494628A (en) * | 2000-06-08 | 2004-05-05 | 丘民世 | Method of constructing simple and continuous composite bridges |
| CN2477701Y (en) * | 2001-05-24 | 2002-02-20 | 周志祥 | Connecting structure of bridge having simple support varied as continuation |
| CN101298757A (en) * | 2008-06-13 | 2008-11-05 | 东南大学 | Method for changing old simple supported beam bridge into continuous beam bridge |
| CN101368374A (en) * | 2008-09-05 | 2009-02-18 | 东南大学 | Pretensioning method for converting old simply supported beam bridge into continuous bridge |
| CN101701448A (en) * | 2009-11-19 | 2010-05-05 | 潘志洪 | Bridge expansion joint structure |
| CN202090280U (en) * | 2011-05-16 | 2011-12-28 | 广东工业大学 | Simply supported-continuous device of concrete beam bridge |
| CN203256627U (en) * | 2013-04-25 | 2013-10-30 | 福州大学 | Continuously-transforming structure of existing simply-supporting hollow plate girder bridge |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107818228A (en) * | 2017-11-20 | 2018-03-20 | 福州大学 | Assembly hollow slab bridges transverse stretching calculation of Prestress method |
| CN107818228B (en) * | 2017-11-20 | 2020-04-10 | 福州大学 | Method for calculating transverse tension prestress of assembled hollow slab bridge |
| WO2021088394A1 (en) * | 2019-11-04 | 2021-05-14 | 南京毛勒工程材料有限公司 | Pouring method for filler in anchorage zone of expansion joint |
| CN111424534A (en) * | 2020-05-14 | 2020-07-17 | 江西省高速公路投资集团有限责任公司 | Structure is simplified in continuous beam hogging moment district of concrete |
| CN112323655A (en) * | 2020-11-24 | 2021-02-05 | 南京梦联桥材料科技有限公司 | Reinforcing method for changing simple support of existing hollow plate beam into continuous support |
| CN112323655B (en) * | 2020-11-24 | 2022-09-30 | 南京迈越材料科技有限公司 | Reinforcing method for changing simple support of existing hollow plate beam into continuous support |
| CN113774809A (en) * | 2021-09-30 | 2021-12-10 | 广东深已建设工程有限公司 | Construction method for continuous structure of simply supported beam bridge deck |
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| Publication number | Publication date |
|---|---|
| CN103205930B (en) | 2015-06-03 |
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