CN105113406A - Crack-proof bridge floor continuous structure for simple support system beam bridge - Google Patents
Crack-proof bridge floor continuous structure for simple support system beam bridge Download PDFInfo
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- CN105113406A CN105113406A CN201510527510.9A CN201510527510A CN105113406A CN 105113406 A CN105113406 A CN 105113406A CN 201510527510 A CN201510527510 A CN 201510527510A CN 105113406 A CN105113406 A CN 105113406A
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Abstract
The invention discloses a crack-proof bridge floor continuous structure for a simple support system beam bridge, relates to a bridge floor continuous structure, and solves the problem that since cement concrete and bituminous concrete are used for pavement within the length range of the existing bridge floor continuous structure, concrete fracture and pavement layer damage easily appear in the bridge floor continuous part. The crack-proof bridge floor continuous structure for a simple support system beam bridge comprises a fibre reinforced cement-based composite material layer, a cement concrete pavement layer, reinforcing meshes and a bituminous concrete pavement layer, wherein the fibre reinforced cement-based composite material layer is arranged within the length range of the bridge floor continuous structure; the cement concrete pavement layer is arranged at two sides of the fibre reinforced cement-based composite material layer; the reinforcing meshes are arranged between the cement concrete pavement layer and the fibre reinforced cement-based composite material layer; and the bituminous concrete pavement layer is arranged on the cement concrete pavement layer and the fibre reinforced cement-based composite material layer. The crack-proof bridge floor continuous structure for a simple support system beam bridge is used for a bridge floor continuous structure of a simple support system beam bridge.
Description
Technical field
The present invention relates to a kind of bridge floor continuous structure, be specifically related to a kind of bridge floor continuous structure of system of simple supporting beam bridge of crack resistence.
Background technology
For ensureing the comfortableness of driving, simply supported beam adopts bridge floor continuous print structural form mostly, namely cancels intermediate warp seam, is combined as a whole by bridge deck pavement, as shown in Figure 3.In bridge floor successive range, the longitudinal reinforcement in concrete pavement layer and transverse reinforcement are suitably encrypted, as shown in Figure 4.For Precast T-Beam and prefabricated small box girder, at beam-ends, preformed groove is set to improve bridge floor continuous print rigidity, as shown in Figure 5.
Due to asphalt concrete pavement layer deadweight, bridge deck local heating, circular temperature loads and live loading, simply supported girder bridge after coming into operation soon, bridge floor continuous part just there will be concrete pavement layer cracking, and then causes asphalt concrete pavement layer to destroy; Meanwhile, bridge floor water penetrates into the place such as bridge pad, bent cap, reduces the durability of bridge construction.
Summary of the invention
The present invention adopts cement concrete and asphalt concrete pavement for solving in existing bridge floor continuous structure length range, easily there is the problem that concrete cracking, pave-load layer destroy in bridge floor continuous part, and provides a kind of bridge floor continuous structure of system of simple supporting beam bridge of crack resistence.
The bridge floor continuous structure of the system of simple supporting beam bridge of a kind of crack resistence of the present invention comprises fiber reinforced cement-based composite material layer, concrete pavement layer, steel mesh reinforcement and asphalt concrete pavement layer, fiber reinforced cement-based composite material layer is arranged in bridge floor continuous structure length range, the both sides of fiber reinforced cement-based composite material layer are concrete pavement layer, steel mesh reinforcement is arranged between concrete pavement layer and fiber reinforced cement-based composite material layer, on concrete pavement layer and fiber reinforced cement-based composite material layer, asphalt concrete pavement layer is set.
The present invention compared with prior art has following beneficial effect:
One, the fiber reinforced cement-based composite material of high tenacity (ECC) that adopts in bridge floor successive range that the present invention proposes replaces traditional cement concrete material, fiber reinforced cement-based composite material still can bear higher load after making bridge floor locate cracking continuously, utilize the larger stretching strain that the high tenacity of fiber reinforced cement-based composite material is produced to adapt to the continuous place of bridge floor by external load, make bridge floor after cracking, still can bear the tensile stress of certain level continuously, bridge floor recurs minute crack but does not destroy, thus can prevent the bridge asphalt pavement layer caused due to the fracture of bridge floor continuous part from ftractureing.
Two, the load at first crack of fiber reinforced cement-based composite material is substantially suitable with plain concrete, but, the ultimate tensile strength of fiber reinforced cement-based composite material is about more than 500 times of ordinary concrete, when fiber reinforced cement-based composite material reaches capacity stretching strain, its crack width remains on about 0.06mm, thus effectively can prevent the bridge floor asphalt concrete pavement layer cracking caused because bridge floor destroys continuously.
Accompanying drawing explanation
Fig. 1 be detailed description of the invention one structural representation (i.e. the continuous paving structure schematic diagram of Hollow Slab Beam Bridge bridge floor, mark in figure 5 for hollow slab beam, b be that shrinkage joint is wide);
Fig. 2 is the structural representation (i.e. Precast T-Beam or the continuous paving structure schematic diagram of Small Precast Box beam bridge floor, in figure, mark 7 is Precast T-Beam or prefabricated small box girder, 8 is reinforcing bar in beam) of detailed description of the invention six;
Fig. 3 be the continuous paving structure schematic diagram of existing beam bridge bridge floor (mark in figure 9 for girder, t be groove depth, s is concrete pavement layer thickness);
Fig. 4 is the continuous paving structure schematic diagram of existing Hollow Slab Beam Bridge bridge floor (marking 10 in figure for precast plate);
Fig. 5 is the continuous paving structure schematic diagram of existing Precast T-Beam or Small Precast Box beam bridge floor (in figure, mark 11 is girder reinforcing bar, 12 is waterproof roll for encrypting reinforcing bar, 13 for filling out asphalt cement, 14).
Detailed description of the invention
Detailed description of the invention one: the bright present embodiment of composition graphs 1, present embodiment comprises fiber reinforced cement-based composite material layer 1, concrete pavement layer 2, steel mesh reinforcement 3 and asphalt concrete pavement layer 4, fiber reinforced cement-based composite material layer 1 is arranged within the scope of bridge floor continuous structure length W, the both sides of fiber reinforced cement-based composite material layer 1 are concrete pavement layer 2, steel mesh reinforcement 3 is arranged between concrete pavement layer 2 and fiber reinforced cement-based composite material layer 1, on concrete pavement layer 2 and fiber reinforced cement-based composite material layer 1, asphalt concrete pavement layer 4 is set.
Detailed description of the invention two: the bright present embodiment of composition graphs 1, the fiber reinforced cement-based composite material adopted within the scope of the bridge floor continuous structure length W of present embodiment, it is the high-tenacity fiber refinforced cement based composites based on Micromechanical Design, fiber reinforced cement-based composite material is by vinal, gelating material, quartz sand, water and water reducing agent composition, vinal accounts for 1.0% ~ 2.5% of gelating material quality, wherein, quartz sand accounts for 25% ~ 75% of gelating material quality, water accounts for 25% ~ 50% of gelating material quality, water reducing agent accounts for 1% ~ 2% of gelating material quality.Also can other fiber of admixture in fiber reinforced cement-based composite material, as carbon fiber, basalt fibre etc.Other is every utilizes the high tenacity of material to adapt to larger stretching strain in bridge floor successive range, all at the row of the present invention.Other composition and annexation identical with detailed description of the invention one.
Detailed description of the invention three: the bright present embodiment of composition graphs 1, the gelating material of present embodiment is made up of cement and flyash.Wherein, flyash accounts for 0 ~ 70% of cement quality.Other composition and annexation identical with detailed description of the invention two.
Detailed description of the invention four: the bright present embodiment of composition graphs 1, the size of the bridge floor continuous structure length W of present embodiment is between 250mm ~ 1000mm, and the thickness of described fiber reinforced cement-based composite material layer 1 is identical with the thickness of the concrete pavement layer 2 of both sides.Other composition and annexation identical with detailed description of the invention two.
Detailed description of the invention five: the bright present embodiment of composition graphs 2, present embodiment is for Precast T-Beam or prefabricated small box girder, can adopt the bridge floor continuation mode of detailed description of the invention one, also can arrange notch 6 at beam-ends.Other composition and annexation identical with detailed description of the invention one.
Claims (4)
1. the bridge floor continuous structure of the system of simple supporting beam bridge of a crack resistence, the bridge floor continuous structure of the system of simple supporting beam bridge of described crack resistence comprises concrete pavement layer (2), steel mesh reinforcement (3) and asphalt concrete pavement layer (4), it is characterized in that: the bridge floor continuous structure of the system of simple supporting beam bridge of described crack resistence also comprises fiber reinforced cement-based composite material layer (1), fiber reinforced cement-based composite material layer (1) is arranged in bridge floor continuous structure length (W) scope, the both sides of fiber reinforced cement-based composite material layer (1) are concrete pavement layer (2), steel mesh reinforcement (3) is arranged between concrete pavement layer (2) and fiber reinforced cement-based composite material layer (1), on concrete pavement layer (2) and fiber reinforced cement-based composite material layer (1), asphalt concrete pavement layer (4) is set.
2. the bridge floor continuous structure of the system of simple supporting beam bridge of a kind of crack resistence according to claim 1, it is characterized in that: the fiber reinforced cement-based composite material adopted in described bridge floor continuous structure length (W) scope, fiber reinforced cement-based composite material is made up of vinal, gelating material, quartz sand, water and water reducing agent, and vinal accounts for 1.0% ~ 2.5% of gelating material quality.
3. the bridge floor continuous structure of the system of simple supporting beam bridge of a kind of crack resistence according to claim 2, is characterized in that: described gelating material is made up of cement and flyash.
4. the bridge floor continuous structure of the system of simple supporting beam bridge of a kind of crack resistence according to claim 3, it is characterized in that: the size of described bridge floor continuous structure length (W) is between 250mm ~ 1000mm, and the thickness of described fiber reinforced cement-based composite material layer (1) is identical with the thickness of the concrete pavement layer (2) of both sides.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510527510.9A CN105113406A (en) | 2015-08-25 | 2015-08-25 | Crack-proof bridge floor continuous structure for simple support system beam bridge |
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| CN201510527510.9A CN105113406A (en) | 2015-08-25 | 2015-08-25 | Crack-proof bridge floor continuous structure for simple support system beam bridge |
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Cited By (9)
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|---|---|---|---|---|
| CN106149554A (en) * | 2016-08-22 | 2016-11-23 | 东莞理工学院 | A kind of prefabricated bridge expansion joint connecting elements, preparation method and construction method thereof |
| CN107217597A (en) * | 2017-06-08 | 2017-09-29 | 东南大学 | A kind of prestressed concrete bridge face is seamlessly connected the construction method of plate |
| CN107237260A (en) * | 2017-08-11 | 2017-10-10 | 上海市城市建设设计研究总院（集团）有限公司 | Structure is longitudinally continuous using the floorings of UHPC clad cans |
| CN108179697A (en) * | 2018-01-26 | 2018-06-19 | 浙江工业大学 | Anti-leakage bridge deck seamless construction structure with non-bonding continuous plates and construction method thereof |
| CN110130220A (en) * | 2019-06-21 | 2019-08-16 | 浙江省交通规划设计研究院有限公司 | A kind of new concrete bridge floor continuous structure applied on beam bridge |
| CN111549658A (en) * | 2020-05-30 | 2020-08-18 | 同济大学 | Continuous bridge joint structure and continuous box girder bridge structure |
| CN113404009A (en) * | 2021-07-15 | 2021-09-17 | 长江水利委员会长江科学院 | Novel concrete panel structure of rock-fill dam and construction method |
| CN114592428A (en) * | 2022-04-21 | 2022-06-07 | 江苏梦联桥科技有限公司 | Low-modulus high-toughness composite material, continuous bridge deck connecting plate member and construction process |
| CN117431828A (en) * | 2023-12-19 | 2024-01-23 | 北京新桥技术发展有限公司 | Bridge leveling layer, bridge and construction method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106149554A (en) * | 2016-08-22 | 2016-11-23 | 东莞理工学院 | A kind of prefabricated bridge expansion joint connecting elements, preparation method and construction method thereof |
| CN107217597A (en) * | 2017-06-08 | 2017-09-29 | 东南大学 | A kind of prestressed concrete bridge face is seamlessly connected the construction method of plate |
| CN107237260A (en) * | 2017-08-11 | 2017-10-10 | 上海市城市建设设计研究总院（集团）有限公司 | Structure is longitudinally continuous using the floorings of UHPC clad cans |
| CN108179697A (en) * | 2018-01-26 | 2018-06-19 | 浙江工业大学 | Anti-leakage bridge deck seamless construction structure with non-bonding continuous plates and construction method thereof |
| CN108179697B (en) * | 2018-01-26 | 2024-03-26 | 浙江工业大学 | Leakage-resistant bridge deck seamless construction structure with non-bonded continuous plates and construction method thereof |
| CN110130220A (en) * | 2019-06-21 | 2019-08-16 | 浙江省交通规划设计研究院有限公司 | A kind of new concrete bridge floor continuous structure applied on beam bridge |
| CN110130220B (en) * | 2019-06-21 | 2024-03-05 | 浙江数智交院科技股份有限公司 | Novel concrete bridge surface continuous structure applied to beam bridge |
| CN111549658A (en) * | 2020-05-30 | 2020-08-18 | 同济大学 | Continuous bridge joint structure and continuous box girder bridge structure |
| CN113404009A (en) * | 2021-07-15 | 2021-09-17 | 长江水利委员会长江科学院 | Novel concrete panel structure of rock-fill dam and construction method |
| CN114592428A (en) * | 2022-04-21 | 2022-06-07 | 江苏梦联桥科技有限公司 | Low-modulus high-toughness composite material, continuous bridge deck connecting plate member and construction process |
| CN117431828A (en) * | 2023-12-19 | 2024-01-23 | 北京新桥技术发展有限公司 | Bridge leveling layer, bridge and construction method |
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