CN105113387A - Reconstruction structure and construction method of bridge bearing platform - Google Patents
Reconstruction structure and construction method of bridge bearing platform Download PDFInfo
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- CN105113387A CN105113387A CN201510534885.8A CN201510534885A CN105113387A CN 105113387 A CN105113387 A CN 105113387A CN 201510534885 A CN201510534885 A CN 201510534885A CN 105113387 A CN105113387 A CN 105113387A
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- cushion cap
- bearing platform
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Abstract
The invention discloses a reconstruction structure of a bridge bearing platform. The reconstruction structure comprises additional foundation structures, wherein the additional foundation structures are respectively arranged on two sides of a bearing platform body structure; each additional foundation structure comprises an additional pile position base, additional pile positions, and an additional base cushion layer positioned under the additional pile position base; steel bars of the bearing platform body structure are fixedly connected with steel bars of the additional pile position bases; the distance between every two adjacent corresponding additional pile positions is 1-2 times of that between every two adjacent corresponding original pile positions; the upper parts of the additional pile position bases are flush with the upper part of the bearing platform body structure; the bottoms of the additional pile position bases are flush with or lower than the bottom of the bearing platform body structure. The reconstruction scheme of the bearing platform, adopted by the reconstruction structure disclosed by the invention, adopts a non-migrating manner, so that the phenomena of time consumption, labor consumption, large construction difficulties and the like, caused by secondary construction, are avoided, the cost is reduced, and the construction efficiency is effectively improved. The reconstruction structure disclosed by the invention adopts a pile overlapping structure which is artful in overlapping design, so that the reconstructed bearing platform structure is firm. A construction method adopted by the reconstruction structure disclosed by the invention has the characteristics of being simple to operate and high in efficiency.
Description
Technical field
The invention belongs to bridge reconstruction field, particularly relate to a kind of bridge bearing platform reconstruction structure and construction method thereof.
Background technology
The supporting construction of bridge is abutment and bridge pier.Abutment is the supporting construction of bridge two ends end of the bridge, is the tie point of high-ways and bridges.Bridge pier generally refers to the intermediate support structure of multiple span bridge more, and abutment and bridge pier are all made up of platform (pier) cap, platform (pier) body and cushion cap.Bridge pier produces except vertical force, horizontal force and moment of flexure except bearing superstructure, also bears the impact of wind-force, flowing water pressure and contingent geological process, ice pressure, ship and drift.Abutment is arranged on bridge two ends, and except supporting bridge span structure, it is again the structure being connected two sides wiring embankment; Should native shore protection be kept off, can banket and banket the additional earth lateral pressure that upper vehicular load produces by the pedestal back of the body again.Therefore, Bridge Pier not only self should have enough intensity, rigidity and stability, and certain requirement is also all proposed to the frictional resistance etc. between the supporting capacity of ground, settling amount, groundsill and foundation, avoid producing the level of harm integral bridge structure, vertical displacement and corner displacement under above-mentioned load action.
To in the construction reformation process of bridge, not only to pay attention to the braced structures of bridge, but also need to pay close attention to the potential safety hazard that whether there is pipeline, especially be embedded in the pipeline in cushion cap.In order to prevent pipeline safety accident to occur, often adopting in prior art and planning to build new pipeline route temporarily alternative original cushion cap gut line, not affecting the operation of whole pipeline system.Then pipeline original in cushion cap is cut off and move to interim pipeline set-point, after there is no the potential safety hazard of cushion cap gut line, and then construction reformation is carried out to bridge.
Above-mentioned solution is migration formula, although can solve the transform measure such as span of bridge, dodge the problem that pipeline also brings secondary construction, not only waste time and energy to move basis, difficulty of construction is large, and cost is high, the engineering time is long, efficiency of construction is low.Therefore, one can be constructed on original pipeline basic, and the bridge bearing platform structure that the duration is short, efficiency is high and construction method become problem demanding prompt solution.
Summary of the invention
In view of the defect that above-mentioned prior art exists, the object of this invention is to provide bridge bearing platform reconstruction structure and construction method thereof, the problems such as what the construction of solution secondary caused wastes time and energy, difficulty of construction is large, cost is high, the engineering time is long, efficiency of construction is low.For realizing aforementioned invention object, the technical solution used in the present invention comprises:
A kind of bridge bearing platform reconstruction structure, comprise cushion cap body construction, the former stake position that cushion cap body construction is arranged, with additional foundation structure, described additional foundation structure is arranged at cushion cap body construction both sides respectively, additional foundation structure comprises and newly adds stake position base station, be arranged on described newly add stake position base station newly add stake position, be positioned at newly to add and newly add base station bed course below the base station of stake position, reinforcing bar and the described bar connecting newly adding stake position base station of described cushion cap body construction are fixed, the described spacing newly added between stake position is 1 ~ 2 times of the spacing between described former stake position, the described stake position base station that newly adds flushes with cushion cap body construction top, the described bottom newly adding stake position base station flushes with the bottom of cushion cap body construction, or describedly newly add the bottom of stake position base station lower than described cushion cap body construction.
The present invention is based on the bridge bearing platform structure of original pipeline further, the described stake position that newly adds adopts congruent pile, it comprises vertical muscle, peripheral annular net form stirrup, peripheral annular concrete and pile body, and described vertical muscle, peripheral annular net form stirrup, peripheral annular concrete are fixedly installed on around pile body along the length direction of pile body.
The present invention is based on the bridge bearing platform structure of original pipeline further, the reinforcing bar of described cushion cap body construction comprises colligation with the described connected mode newly adding the reinforcing bar of stake position base station and overlaps, be mechanically connected or weld.
The present invention is based on the bridge bearing platform structure of original pipeline further, the described steel bar stress diameter >=15mm newly adding stake position base station, the spacing of steel bar stress is at 80mm ~ 250mm.
The present invention is based on the bridge bearing platform structure of original pipeline further, the described stake position base station that newly adds adopts multilayer two way system, and its reinforcement ratio is in 0.5% ~ 1.5% scope.
The present invention is based on the bridge bearing platform structure of original pipeline further, the described base station bed course that newly adds comprises layer of concrete, and its thickness is at 40mm ~ 70mm.
The technical solution used in the present invention also comprises:
A construction method for bridge bearing platform reconstruction structure, comprises the steps:
S1, present cushion cap body construction surrounding fixed frame is protected, measure the size of building additional foundation structure needed for cushion cap body construction according to design drawing, then dig out the hole of building for additional foundation structure, the bottom in the hole that the additional foundation structure of described confession is built is lower than bottom cushion cap body construction;
S2, through the leveling of the end, hole in described hole of digging out, fixed form, after building the substrate of additional foundation structure, build at the stake heart and build congruent pile, its process comprises the reinforcing cage first fixing pile body at the stake heart, build reinforcing cage formwork supporting plate, then muscle will be indulged around pile body main body, peripheral annular net form stirrup surrounds binding and forms overlapping layers cage of reinforcement, and build overlapping layers cage of reinforcement formwork supporting plate, described overlapping layers cage of reinforcement is connected by reinforced-bar binding with between described reinforcing cage, then first pouring reinforcement cage, tear reinforcing cage formwork supporting plate open, build overlapping layers cage of reinforcement again, tear overlapping layers cage of reinforcement formwork supporting plate open, namely pile body is formed,
S3, encloses in the pile body outsourcing set and puts additional foundation structure reinforcing cage, and bundles with the reinforcing cage of reinforcing bar by the reinforcing cage of additional foundation structure and cushion cap body construction, then builds additional foundation structure formwork supporting plate;
S4, concreting in the space that additional foundation structure formwork supporting plate is built, forms the additional foundation structure with cushion cap body construction one.
Construction method of the present invention further, before described step S4, comprises the dismounting step of cushion cap body construction surrounding fixed frame.
Further, in step s3, described additional foundation structure reinforcing cage adopts multilayer two way system to construction method of the present invention, and its reinforcement ratio is in 0.5% ~ 1.5% scope, and its steel bar stress diameter >=15mm, the spacing of steel bar stress is at 80mm ~ 250mm.
By such scheme, the present invention at least has the following advantages: 1. cushion cap modification scheme of the present invention is non-migrating formula, avoid secondary to construct causing waste time and energy, the shortcoming such as difficulty of construction is large, cost-saving, the engineering time is short, effectively improve efficiency of construction; 2. the present invention newly adds stake position and adopts superimposed design congruent pile structure cleverly, makes improved suspended deck structure more firm; 3. the present invention increases base station layer pad in the part newly adding cushion cap, and the bottom of the part newly adding cushion cap is deep-cut with original cushion cap bottom, be conducive to the overall performance strengthening newly adding cushion cap and former cushion cap integrative-structure; 4. construction method of the present invention is simple, and efficiency is high.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of manual, coordinates accompanying drawing to be described in detail as follows below with preferred embodiment of the present invention.
Accompanying drawing explanation
Fig. 1 is the top view of bridge bearing platform reconstruction structure of the present invention;
Fig. 2 be bridge bearing platform reconstruction structure of the present invention newly add a bit architecture schematic diagram;
Fig. 3 is the structural representation of bridge bearing platform reconstruction structure of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, carry out clear, complete description to the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments, be not used for limiting the scope of the invention.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Fig. 1, Fig. 2 and Fig. 3, the bridge bearing platform reconstruction structure of the embodiment of the present invention, comprises former stake position 7 and additional foundation structure 2 that cushion cap body construction 1, cushion cap body construction 1 are arranged.The present invention will be intended to additional foundation structure 2, and this additional foundation structure 2 is arranged at cushion cap body construction 1 both sides respectively.The width of additional foundation structure 2 determines according to the demand of modification scheme, can be wider, comprises how exclusively newly adding stake position 4, also can be narrower, only comprises a row and newly add stake position 4.
Additional foundation structure 2 comprises and newly adds stake position base station 3, be arranged on and newly add newly adding stake position 4, being positioned at newly to add and newly adding base station bed course 5 below stake position base station 3 of stake position base station 3.Wherein, the reinforcing bar of cushion cap body construction 1 is fixed with the bar connecting newly adding stake position base station 3.It should be noted that when arranging and newly adding position, stake position 4 and spacing the spacing newly added between stake position 4 is 1 ~ 2 times of the spacing between former stake position 6, to meet the requirement of strength of additional foundation structure 2 cushion cap arrangement of reinforcement.
Particularly, newly add stake position base station 3 to flush with cushion cap body construction 1 top, the bottom newly adding stake position base station 3 flushes with the bottom of cushion cap body construction 1 or newly adds the bottom of stake position base station 3 lower than described cushion cap body construction 1, is conducive to the overall performance strengthening newly adding cushion cap and former cushion cap integrative-structure.
As shown in Figure 3, the embodiment of the present invention particularly, newly add stake position 4 and adopt congruent pile, it comprises vertical muscle 41, peripheral annular net form stirrup 42, peripheral annular concrete 43 and pile body 44, and described vertical muscle 41, peripheral annular net form stirrup 42, peripheral annular concrete 43 are fixedly installed on around pile body 44 along the length direction of pile body 44.Newly add the design of stake position 4, make that improved suspended deck structure is more firm, overall performance is good.Wherein, the reinforcing bar of cushion cap body construction 1 comprises colligation with the described connected mode newly adding the reinforcing bar of stake position base station 3 and overlaps, be mechanically connected or weld.Newly add the steel bar stress diameter >=15mm of stake position base station 3, the spacing of steel bar stress is at 80mm ~ 250mm.Newly add stake position base station 3 and adopt multilayer two way system, its reinforcement ratio is in 0.5% ~ 1.5% scope.Newly add base station bed course 5 and comprise layer of concrete, its thickness is at 40mm ~ 70mm.The above-mentioned preferred parameter to newly adding reinforcing bar in stake position base station 3, makes its tension rise intensity higher, simultaneously safe and reliable with cushion cap body construction 1.
During bridge bearing platform reconstruction structure Specific construction of the present invention, comprise the steps:
S1; present cushion cap body construction 1 surrounding fixed frame is protected; the size of building additional foundation structure 2 needed for cushion cap body construction 1 is measured according to design drawing; then the hole of building for additional foundation structure 2 is dug out; the bottom in the hole supplying additional foundation structure 2 to build, lower than bottom cushion cap body construction 1, is conducive to the overall performance strengthening newly adding cushion cap and former cushion cap integrative-structure.
S2, through the leveling of the end, hole in the hole of digging out in S1 step, fixed form, after building the substrate of additional foundation structure 2, build at the stake heart and build congruent pile, its process comprises the reinforcing cage first fixing pile body 44 at the stake heart, build reinforcing cage formwork supporting plate, then muscle 41 will be indulged around pile body 44 main body, peripheral annular net form stirrup 42 surrounds binding and forms overlapping layers cage of reinforcement, and build overlapping layers cage of reinforcement formwork supporting plate, described overlapping layers cage of reinforcement is connected by reinforced-bar binding with between described reinforcing cage, then first pouring reinforcement cage, tear reinforcing cage formwork supporting plate open, build overlapping layers cage of reinforcement again, namely pile body 44 is formed after tearing overlapping layers cage of reinforcement formwork supporting plate open.
S3, enclose in pile body 44 outsourcing set and put additional foundation structure 2 reinforcing cage, and with reinforcing bar, the reinforcing cage of additional foundation structure 2 and the reinforcing cage of cushion cap body construction 1 are bundled, certainly before this, need first the reinforcing cage part of cushion cap body construction 1 to be chiseled outside exposed, then build additional foundation structure 2 formwork supporting plate.In this step S3, additional foundation structure 2 reinforcing cage adopts multilayer two way system, and its reinforcement ratio is in 0.5% ~ 1.5% scope, and its steel bar stress diameter >=15mm, the spacing of steel bar stress is at 80mm ~ 250mm.
S4, concreting in the space that additional foundation structure 2 formwork supporting plate is built, forms the additional foundation structure 2 with cushion cap body construction 1 one.Certainly, before step S 4, also can now the carrying out of cushion cap body construction 1 surrounding fixed frame be removed.
Therefore, cushion cap modification scheme of the present invention is non-migrating formula, avoid secondary to construct causing waste time and energy, the shortcoming such as difficulty of construction is large, cost-saving, the engineering time is short, effectively improve efficiency of construction; The present invention newly adds stake position and adopts superimposed design congruent pile structure cleverly, makes improved suspended deck structure more firm; The present invention increases base station layer pad in the part newly adding cushion cap, and the bottom of the part newly adding cushion cap is deep-cut with original cushion cap bottom, be conducive to the overall performance strengthening newly adding cushion cap and former cushion cap integrative-structure; Construction method of the present invention is simple, and efficiency is high.The present invention still has numerous embodiments, all employing equivalents or equivalent transformation and all technical schemes formed, and all drops within protection scope of the present invention.
Claims (9)
1. a bridge bearing platform reconstruction structure, comprises cushion cap body construction (1), the upper former stake position (7) arranged of cushion cap body construction (1), it is characterized in that: also comprise additional foundation structure (2),
Described additional foundation structure (2) is arranged at cushion cap body construction (1) both sides respectively, additional foundation structure (2) comprises and newly adds stake position base station (3), be arranged on described newly add stake position base station (3) newly add stake position (4), be positioned at newly add stake position base station (3) below newly add base station bed course (5), reinforcing bar and the described bar connecting newly adding stake position base station (3) of described cushion cap body construction (1) are fixed, the described spacing newly added between stake position (4) is 1 ~ 2 times of the spacing between described former stake position (6), described stake position base station (3) that newly adds flushes with cushion cap body construction (1) top, the described bottom newly adding stake position base station (3) flushes with the bottom of cushion cap body construction (1), or describedly newly add the bottom of stake position base station (3) lower than described cushion cap body construction (1).
2. bridge bearing platform reconstruction structure according to claim 1, it is characterized in that: the described stake position (4) that newly adds adopts congruent pile, it comprises vertical muscle (41), peripheral annular net form stirrup (42), peripheral annular concrete (43) and pile body (44), and described vertical muscle (41), peripheral annular net form stirrup (42), peripheral annular concrete (43) are fixedly installed on pile body (44) around along the length direction of pile body (44).
3. bridge bearing platform reconstruction structure according to claim 1, is characterized in that: the reinforcing bar of described cushion cap body construction (1) comprises colligation with the described connected mode newly adding the reinforcing bar of stake position base station (3) and overlaps, be mechanically connected or weld.
4. bridge bearing platform reconstruction structure according to claim 1, is characterized in that: the described steel bar stress diameter >=15mm newly adding stake position base station (3), the spacing of steel bar stress is at 80mm ~ 250mm.
5. bridge bearing platform reconstruction structure according to claim 1, is characterized in that: described stake position base station (3) that newly adds adopts multilayer two way system, and its reinforcement ratio is in 0.5% ~ 1.5% scope.
6. bridge bearing platform reconstruction structure according to claim 1, is characterized in that: the described base station bed course (5) that newly adds comprises layer of concrete, and its thickness is at 40mm ~ 70mm.
7. a construction method for bridge bearing platform reconstruction structure, is characterized in that comprising the steps:
S1, present cushion cap body construction (1) surrounding fixed frame is protected, the size of building additional foundation structure (2) needed for cushion cap body construction (1) is measured according to design drawing, then dig out the hole of building for additional foundation structure (2), the bottom in the hole that the additional foundation structure of described confession (2) is built is lower than cushion cap body construction (1) bottom;
S2, through the leveling of the end, hole in described hole of digging out, fixed form, after building the substrate of additional foundation structure (2), build at the stake heart and build congruent pile, its process comprises the reinforcing cage of first pile body (44) on the stake heart is fixing, build reinforcing cage formwork supporting plate, then muscle (41) will be indulged around pile body (44) main body, peripheral annular net form stirrup (42) surrounds binding and forms overlapping layers cage of reinforcement, and build overlapping layers cage of reinforcement formwork supporting plate, described overlapping layers cage of reinforcement is connected by reinforced-bar binding with between described reinforcing cage, then first pouring reinforcement cage, tear reinforcing cage formwork supporting plate open, build overlapping layers cage of reinforcement again, tear overlapping layers cage of reinforcement formwork supporting plate open, namely pile body (44) is formed,
S3, enclose in the pile body set (44) outsourcing and put additional foundation structure (2) reinforcing cage, and bundle with the reinforcing cage of reinforcing bar by the reinforcing cage of additional foundation structure (2) and cushion cap body construction (1), then build additional foundation structure (2) formwork supporting plate;
S4, concreting in the space that additional foundation structure (2) formwork supporting plate is built, forms the additional foundation structure (2) with cushion cap body construction (1) one.
8. construction method according to claim 7, is characterized in that: before described step S4, comprises the dismounting step of cushion cap body construction (1) surrounding fixed frame.
9. construction method according to claim 7, it is characterized in that: in step s3, described additional foundation structure (2) reinforcing cage adopts multilayer two way system, its reinforcement ratio is in 0.5% ~ 1.5% scope, its steel bar stress diameter >=15mm, the spacing of steel bar stress is at 80mm ~ 250mm.
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| CN201510534885.8A CN105113387A (en) | 2015-08-27 | 2015-08-27 | Reconstruction structure and construction method of bridge bearing platform |
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| CN201510534885.8A CN105113387A (en) | 2015-08-27 | 2015-08-27 | Reconstruction structure and construction method of bridge bearing platform |
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| CN108457204A (en) * | 2018-02-10 | 2018-08-28 | 北京工业大学 | One kind carrying out bracing means for old Bridge Foundation Lack of support |
| CN112779853A (en) * | 2019-11-07 | 2021-05-11 | 中冶京诚工程技术有限公司 | Abutment and design and construction method thereof |
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Application publication date: 20151202 |