CN104631271B - A kind of bridge ground section structure eliminating bumping at bridge-head - Google Patents
A kind of bridge ground section structure eliminating bumping at bridge-head Download PDFInfo
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- CN104631271B CN104631271B CN201510037595.2A CN201510037595A CN104631271B CN 104631271 B CN104631271 B CN 104631271B CN 201510037595 A CN201510037595 A CN 201510037595A CN 104631271 B CN104631271 B CN 104631271B
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Abstract
The present invention relates to a kind of bridge ground section structure eliminating bumping at bridge-head, be arranged between bridge structure and ground, comprise: some pile foundations, be vertically arranged in below the above-ground route on ground, contact with ground；Cushion cap, is horizontally set on the top of pile foundation to connect the stake top on all piles basis；Some webs, are vertically arranged in the end face of described cushion cap, the cushion cap described in the connection of bottom of every block of web；Top board, is horizontally set on the top of described web to connect the top of all webs；Wherein pile foundation, cushion cap, web and top board connect formation entirety；Top board bears the vehicular load that top board bears by vehicular load, web and cushion cap and is transferred to pile foundation, and vehicular load is transferred to ground by pile foundation.The present invention banket after can not only eliminating the abutment and platform that bridgehead position causes more greatly due to filled slope between relative settlement and the jumping car phenomenon that causes, and consistent with the outline of bridge, landscape effect is more preferably.
Description
Technical field
The present invention relates to a kind of bridge ground section structure, specifically refer to a kind of bridge ground section structure that can effectively eliminate bumping at bridge-head, belong to technical field of bridge engineering.
Background technology
From the point of view of the bridge operation situation that current China comes into operation, owing to after bridge platform, filled slope is bigger, under the effect of deadweight and traffic load, relative settlement is produced between banketing after causing abutment and platform, so that automobile produces jumping car phenomenon in the process of moving, therefore greatly reduce the travel speed of vehicle and the traffic capacity of road, also make the comfortableness of driving have a greatly reduced quality, finally affect economic benefit and the social benefit of bridge construction.
According to prior art, mainly there is following several measure for the improvement of " bumping at bridge-head " phenomenon:
(1) bridging slab after platform.This method is to arrange attachment strap after abutment, the front end of attachment strap is erected on the rear side of abutment platform cap, and is erected on the rear end of attachment strap on the Wo Liang of special setting, relax the differential settlement caused by differential settlement with this.
(2) preloading.This method is to carry out piling prepressing, the consolidation banketed after accelerating abutment platform on banketing after platform, thus reduces the differential settlement of both sides, end of the bridge expansion joint.
(3) geo-grid sheet method.This method is to utilize geotextiles, bankets and on abutment, thus reduce the differential settlement at expansion joint after upper load is transferred to platform uniformly.
(4) foundation consolidation process.This method is to use the mode such as cement mixing pile, sand compaction pile, broken stone pile to reinforce the ground after platform, reduces platform and carries on the back the settling amount banketed, thus reduces the differential settlement that differential settlement is brought.
(5) light material method.This method is to use EPS(expandable polystyrene) material such as material, expanded perlite, flyash, foam concrete replaces conventional material to banket after carrying out platform, alleviate deadweight, reduce the additional stress of ground, thus reduce the differential settlement that subgrade settlement is brought.
One of the above or the integrated use of several method, although vehicle bump at bridge ends is had certain mitigation, but due to the poor rigidity existed between bridge and road, especially when filled slope is bigger after platform, differential settlement is still unavoidable from.Therefore, said method the most fundamentally solves the problem of bumping at bridge-head, but also can derive some other problem, such as: brow plate emptying, secondary jump car etc..
In sum, a kind of structure that can fundamentally solve vehicle bump at bridge ends of proposition is needed badly.
Summary of the invention
The present invention proposes a kind of bridge ground section structure eliminating bumping at bridge-head, relative settlement between banketing after can not only eliminating the abutment and platform that bridgehead position causes more greatly due to filled slope and the jumping car phenomenon that causes, and consistent with the outline of bridge, landscape effect is more preferably.
A kind of bridge ground section structure eliminating bumping at bridge-head that the present invention provides, is arranged between bridge structure and ground；This bridge ground section structure comprises: some pile foundations, is vertically arranged in below the above-ground route on ground, is embedded in soil, and this pile foundation directly contacts with ground；Cushion cap, is horizontally set on the top of described pile foundation to connect the stake top on all piles basis；Some webs, are vertically arranged in the end face of described cushion cap, the cushion cap described in the connection of bottom of every block of web；Top board, is horizontally set on the top of described web to connect the top of all webs；Described pile foundation, cushion cap, web and top board connects formation entirety；Described top board bears the vehicular load that top board born by vehicular load, described web and cushion cap and is transferred to described pile foundation, and vehicular load is transferred to the ground being in direct contact with it by described pile foundation.
Bridge ground section structure of the present invention, it is adaptable to the bridge structures such as concrete overall big box beam, steel box-girder, precast hollow slab, Precast T-Beam, prefabricated small box girder.
Described bridge ground section structure is at vertical bridge to being provided with subsiding crack between segmentation, section and section, and this subsiding crack runs through described top board, web and cushion cap.
Described bridge ground section structure is provided with expansion joint with the junction of bridge structure, and this expansion joint makes bridge ground section structure be kept completely separate with bridge structure.
Described pile foundation uses reinforced concrete structure, or prestressed reinforced concrete construction, or steel construction, or steel concrete combinative structure.
Described cushion cap uses reinforced concrete structure, is arranged on below the above-ground route on ground, is embedded in soil.
Described web uses reinforced concrete structure, and the quantity that arranges of this web is determined by the width of bridge structure and the stress degree of top board.
The profile of described web is consistent with the web of bridge structure.
Described top board uses reinforced concrete structure, or prestressed reinforced concrete construction；The profile of this top board is consistent with the top board of bridge structure；The two ends of this top board are provided with anticollision barrier, and the profile of this anticollision barrier is consistent with the anticollision barrier of bridge structure.
In the junction of bridge ground section structure Yu ground, the top of described web flushes with the above-ground route on ground, and the arm roots of choosing of i.e. described top board flushes with the above-ground route on ground.
In sum, the bridge ground section structure of elimination bumping at bridge-head of the present invention, have the advantages that and can fully reduce filled slope after platform, make filled slope not affected by the structure height of superstructure, fundamentally solve vehicle bump at bridge ends；And the outline of bridge ground section structure is consistent with bridge so that the profile of whole engineering more coordinates smoothness, and landscape effect is more preferably.
Accompanying drawing explanation
Fig. 1 is the population structure schematic diagram of the bridge ground section structure eliminating bumping at bridge-head in the present invention；
Fig. 2 is the generalized section of bridge structure in Fig. 1 along line A-A；
Fig. 3 is the generalized section of bridge ground section structure in Fig. 1 along line B-B；
Fig. 4 is the generalized section of bridge ground section structure in Fig. 1 along line C-C.
Detailed description of the invention
Below in conjunction with Fig. 1～Fig. 4, by describing a preferably specific embodiment in detail, the present invention is further elaborated.
As it is shown in figure 1, the bridge ground section structure of elimination bumping at bridge-head provided by the present invention, it is arranged between bridge structure 20 and ground 30；This bridge ground section structure 10 comprises: some pile foundations 4, is vertically arranged in below the above-ground route on ground 30, is embedded in soil, and this pile foundation 4 directly contacts with ground；Cushion cap 3, is horizontally set on the top of described pile foundation 4 to connect the stake top on all piles basis 4；Some webs 2, are vertically arranged in the end face of described cushion cap 3, the cushion cap 3 described in the connection of bottom of i.e. every block web 2；Top board 1, is horizontally set on the top of described web 2 to connect the top of all webs 2；Described pile foundation 4, cushion cap 3, web 2 and top board 1 connect formation entirety by concreting；During operation uses, described top board 1 directly bears the vehicular load that top is passed through, described web 2 and cushion cap 3 play power transmission and transitional function, the vehicular load that top board 1 is born is transferred to described pile foundation 4, described pile foundation 4 plays supporting role, and vehicular load is transferred to the ground being in direct contact with it.
The sequence of construction of described bridge ground section structure 10 is: first construction stake basis 4, then construction bearing platform 3, finally construction web 2 and top board 1.
Bridge ground section structure of the present invention, it is adaptable to the bridge structures such as concrete overall big box beam, steel box-girder, precast hollow slab, Precast T-Beam, prefabricated small box girder.
As it is shown in figure 1, described bridge ground section structure 10 at vertical bridge to segmentation, every segment length controls at about 15m, and is provided with subsiding crack 6 between section and section, and this subsiding crack 6 runs through described top board 1, web 2 and cushion cap 3.
Described bridge ground section structure 10 is provided with expansion joint 7 with the junction of bridge structure 20, and this expansion joint makes bridge ground section structure 10 be kept completely separate with bridge structure 20.
Described pile foundation 4 uses reinforced concrete structure, or prestressed reinforced concrete construction, or steel construction, or steel concrete combinative structure, and this pile foundation 4 is connected formation entirety with described cushion cap 3.
The layout of described pile foundation 4 is by the load born and combines settlement Control decision.
Described cushion cap 3 uses reinforced concrete structure, and this cushion cap 3 is connected formation entirety with described web 2.
Described cushion cap 3 is arranged on below the above-ground route on ground 30, is embedded in soil.
Described web 2 uses reinforced concrete structure, and this web 2 is connected formation entirety with described top board 1.
The quantity that arranges of described web 2 is determined by the width of bridge structure 20 and the stress degree of top board 1.
Comparison diagram 2 and Fig. 3, the profile of the web 2 of described bridge ground section structure 10 is consistent with the web 201 of bridge structure 20.
Described top board 1 uses reinforced concrete structure, or prestressed reinforced concrete construction.
Comparison diagram 2 and Fig. 3, the profile of the top board 1 of described bridge ground section structure 10 is consistent with the top board 202 of bridge structure 20.
As shown in Figure 3 and Figure 4, the two ends of the top board 1 of described bridge ground section structure 10 are provided with anticollision barrier 5, and the profile of this anticollision barrier 5 is consistent with the anticollision barrier 203 of bridge structure 20.
As it is shown on figure 3, at bridge structure 20, be arranged on below the above-ground route on ground 30 with cushion cap 3 junction, be embedded in soil bottom described web 2, this web 2 top and top board 1 junction are arranged on above the above-ground route on ground 30.
As shown in Figure 4, junction in bridge ground section structure 10 with ground 30, still it is arranged on below the above-ground route on ground 30 with cushion cap 3 junction bottom described web 2, it is embedded in soil, but web 2 top with top board 1 junction then above-ground route with ground 30 flush, the arm roots of choosing of i.e. described top board 1 flushes with the above-ground route on ground 30.
In sum, the bridge ground section structure of elimination bumping at bridge-head of the present invention, relative settlement between banketing after can not only eliminating the abutment and platform that bridgehead position causes more greatly due to filled slope and the jumping car phenomenon that causes, and web and the configuration design of top board can be passed through, making bridge ground section structure consistent with the outline of bridge, landscape effect is more preferably.The present invention can effectively promote the total quality of road, science of bridge building, in the life cycle management of engineering, has certain economic benefit and good social benefit.
Although present disclosure has been made to be discussed in detail by above preferred embodiment, but it should be appreciated that the description above is not considered as limitation of the present invention, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. eliminate a bridge ground section structure for bumping at bridge-head, be arranged between bridge structure (20) and ground (30)；It is characterized in that, this bridge ground section structure (10) comprises:
Some pile foundations (4), are vertically arranged in below the above-ground route of ground (30), are embedded in soil, and this pile foundation (4) directly contacts with ground；
Cushion cap (3), is horizontally set on the top of described pile foundation (4) to connect the stake top of all piles basis (4)；
Some webs (2), are vertically arranged in the end face of described cushion cap (3), the cushion cap (3) described in the connection of bottom of every piece of web (2)；
Top board (1), is horizontally set on the top of described web (2) to connect the top of all webs (2)；
Described pile foundation (4), cushion cap (3), web (2) and top board (1) connects formation entirety；Described top board (1) bears vehicular load, described web (2) and cushion cap (3) and the vehicular load that top board (1) is born is transferred to described pile foundation (4), and vehicular load is transferred to the ground being in direct contact with it by described pile foundation (4).
2. the bridge ground section structure eliminating bumping at bridge-head as claimed in claim 1, it is characterised in that described bridge ground section structure is applicable to concrete overall big box beam, steel box-girder, precast hollow slab, Precast T-Beam, the bridge structure of prefabricated small box girder.
3. the bridge ground section structure eliminating bumping at bridge-head as claimed in claim 1, it is characterized in that: described bridge ground section structure (10) at vertical bridge to segmentation, being provided with subsiding crack (6) between section and section, this subsiding crack (6) runs through described top board (1), web (2) and cushion cap (3).
4. the bridge ground section structure eliminating bumping at bridge-head as claimed in claim 1, it is characterized in that: described bridge ground section structure (10) is provided with expansion joint (7) with the junction of bridge structure (20), and this expansion joint (7) make bridge ground section structure (10) be kept completely separate with bridge structure (20).
5. the bridge ground section structure eliminating bumping at bridge-head as claimed in claim 1, it is characterised in that: described pile foundation (4) uses reinforced concrete structure, or steel construction, or steel concrete combinative structure.
6. the bridge ground section structure eliminating bumping at bridge-head as claimed in claim 1, it is characterised in that described cushion cap (3) uses reinforced concrete structure, is arranged on below the above-ground route of ground (30), is embedded in soil.
7. the bridge ground section structure eliminating bumping at bridge-head as claimed in claim 1, it is characterized in that: described web (2) uses reinforced concrete structure, the quantity that arranges of this web (2) is determined by the width of bridge structure (20) and the stress degree of top board (1).
8. the bridge ground section structure eliminating bumping at bridge-head as claimed in claim 1, it is characterised in that: the profile of described web (2) is consistent with the web of bridge structure (20) (201).
9. the bridge ground section structure eliminating bumping at bridge-head as claimed in claim 1, it is characterised in that described top board (1) uses reinforced concrete structure；
The profile of described top board (1) is consistent with the top board of bridge structure (20) (202)；
The two ends of described top board (1) are provided with anticollision barrier (5), and the profile of this anticollision barrier (5) is consistent with the anticollision barrier of bridge structure (20) (203).
10. the bridge ground section structure eliminating bumping at bridge-head as claimed in claim 1, it is characterized in that: the position that the above-ground route at top and ground (30) that described bridge ground section structure terminates in described web (2) flushes, i.e. described top board (1) choose the position that arm roots flushes with the above-ground route of ground (30).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510037595.2A CN104631271B (en) | 2015-01-26 | 2015-01-26 | A kind of bridge ground section structure eliminating bumping at bridge-head |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510037595.2A CN104631271B (en) | 2015-01-26 | 2015-01-26 | A kind of bridge ground section structure eliminating bumping at bridge-head |
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| CN104631271A CN104631271A (en) | 2015-05-20 |
| CN104631271B true CN104631271B (en) | 2016-08-24 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1388292A (en) * | 2001-05-28 | 2003-01-01 | 陈光和 | Bridge-road joint constructing method to prevent bump of vehicle at ends of bridge |
| CN2622245Y (en) * | 2003-05-09 | 2004-06-30 | 华南理工大学 | Bridge end chain type transitional means |
| CN101892635A (en) * | 2010-08-11 | 2010-11-24 | 中交第四航务工程局有限公司 | Method for solving problem of vehicle bump at bridge head and structure thereof |
| CN201850505U (en) * | 2010-11-18 | 2011-06-01 | 中交第一公路勘察设计研究院有限公司 | Rigid-flexible transition structure capable of preventing bumping at bridge-head |
| CN103628376A (en) * | 2013-11-20 | 2014-03-12 | 长安大学 | Bridgehead vehicle bumping prevention structure based on concrete composite pavement and laying method thereof |
-
2015
- 2015-01-26 CN CN201510037595.2A patent/CN104631271B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1388292A (en) * | 2001-05-28 | 2003-01-01 | 陈光和 | Bridge-road joint constructing method to prevent bump of vehicle at ends of bridge |
| CN2622245Y (en) * | 2003-05-09 | 2004-06-30 | 华南理工大学 | Bridge end chain type transitional means |
| CN101892635A (en) * | 2010-08-11 | 2010-11-24 | 中交第四航务工程局有限公司 | Method for solving problem of vehicle bump at bridge head and structure thereof |
| CN201850505U (en) * | 2010-11-18 | 2011-06-01 | 中交第一公路勘察设计研究院有限公司 | Rigid-flexible transition structure capable of preventing bumping at bridge-head |
| CN103628376A (en) * | 2013-11-20 | 2014-03-12 | 长安大学 | Bridgehead vehicle bumping prevention structure based on concrete composite pavement and laying method thereof |
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| CN104631271A (en) | 2015-05-20 |
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