CN104631271A - Bridge grounding section structure for removing bump at bridge head - Google Patents
Bridge grounding section structure for removing bump at bridge head Download PDFInfo
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- CN104631271A CN104631271A CN201510037595.2A CN201510037595A CN104631271A CN 104631271 A CN104631271 A CN 104631271A CN 201510037595 A CN201510037595 A CN 201510037595A CN 104631271 A CN104631271 A CN 104631271A
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Abstract
The invention relates to a bridge grounding section structure for removing bump at a bridge head. The bridge grounding section structure is arranged between a bridge structure and the ground. The bridge grounding section structure comprises a plurality of pile foundations which are vertically arranged below a ground line at the ground and in contact with the subgrade, a bearing platform which is horizontally arranged above the pile foundations to connect the tops of all pile foundations, a plurality of webs which are vertically arranged on the top surfaces of the bearing platforms, and a top plate which is horizontally arranged above the webs to connect the top parts of all webs, wherein the bottom part of each web is connected to the bearing platform; the pile foundations, the bearing platform, the webs and the top plate are connected into a whole; the top plate is used for bearing vehicle load; the webs and the bearing platform are used for transmitting the vehicle load on the top plate to the pile foundations; the pile foundations transmit the vehicle load to the subgrade. With the adoption of the bridge grounding section structure, the phenomenon of bump caused by differential settlement between a bridge abutment and earth filling behind the abutment due to excessive earth filling thickness at the bridge head can be removed; in addition, the outer contour is the same as the bridge, so that the landscape effect is improved.
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 effectively eliminating bumping at bridge-head, belong to technical field of bridge engineering.
Background technology
From the bridge operation situation that current China comes into operation, because after bridge platform, filled slope is larger, deadweight and traffic load effect under, relative settlement is produced between banketing after causing abutment and platform, thus make automobile produce 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, the improvement for " bumping at bridge-head " phenomenon mainly contains following several measure:
(1) bridging slab after platform.This method arranges attachment strap after abutment, the front end of attachment strap is erected on the rear side of abutment platform cap, and be erected on the rear end of attachment strap on the special Wo Liang arranged, and relaxes the differential settlement caused by differential settlement with this.
(2) preloading.This method banketing after platform carries out piling prepressing, the consolidation of banketing after accelerating abutment platform, thus the differential settlement reducing both sides, end of the bridge shrinkage joint.
(3) geo-grid sheet method.This method utilizes geotextiles, bankets with on abutment, thus reduce the differential settlement at shrinkage joint place after upper load is passed to platform uniformly.
(4) foundation consolidation process.This method adopts the modes such as cement mixing pile, sand compaction pile, broken stone pile to reinforce the ground after platform, reduces platform and carry on the back the settling amount banketed, thus the differential settlement that reduction differential settlement brings.
(5) light material method.This method adopts EPS(expandable polystyrene) material such as material, expanded perlite, flyash, foam concrete bankets after replacing conventional material to carry out platform, alleviate deadweight, reduce the subsidiary stress of ground, thus the differential settlement that reduction subgrade settlement brings.
The integrated use of one or more methods above, although have certain mitigation to vehicle bump at bridge ends, due to the poor rigidity existed between bridge and road, especially when after platform, filled slope is larger, differential settlement still cannot be avoided.Therefore, said method does not fundamentally solve 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 fundamentally can 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 caused, and consistent with the outline of bridge, landscape effect is better.
A kind of bridge ground section structure eliminating bumping at bridge-head provided by the invention, is arranged between bridge construction and ground; This bridge ground section structure comprises: some pile foundations, and below the above-ground route being vertically arranged on ground, be embedded in soil, 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 on the end face of described cushion cap, the cushion cap described in the connection of bottom of every block 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 are connected to form entirety; Described top board bears vehicular load, and the vehicular load that top board bears by described web and cushion cap is passed to described pile foundation, and vehicular load is passed to the ground be in direct contact with it by described pile foundation.
Bridge ground section structure of the present invention, is applicable to the bridge constructions such as concrete overall large case beam, steel box-girder, precast hollow slab, Precast T-Beam, prefabricated small box girder.
Described bridge ground section structure to segmentation, is provided with settlement joint between section and section at vertical bridge, and this settlement joint runs through described top board, web and cushion cap.
Described bridge ground section structure and the junction of bridge construction are provided with shrinkage joint, and this shrinkage joint makes bridge ground section structure be separated completely with bridge construction.
Described pile foundation adopts reinforced concrete structure, or prestressed reinforced concrete construction, or steel work, or steel-concrete combined structure.
Described cushion cap adopts reinforced concrete structure, below the above-ground route being arranged on ground, is embedded in soil.
Described web adopts reinforced concrete structure, and the magnitude setting of this web is determined by the width of bridge construction and the stressed degree of top board.
The profile of described web is consistent with the web of bridge construction.
Described top board adopts reinforced concrete structure, or prestressed reinforced concrete construction; The profile of this top board is consistent with the top board of bridge construction; 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 construction.
In the junction on bridge ground section structure and ground, the top of described web flushes with the above-ground route on ground, and the arm roots of choosing of namely 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, has following beneficial effect: fully can reduce filled slope after platform, filled slope not affected by the structure height of superstructure, fundamentally solves vehicle bump at bridge ends; And the outline of bridge ground section structure is consistent with bridge, make the profile of whole engineering more coordinate smoothness, landscape effect is better.
Accompanying drawing explanation
Fig. 1 is the general structure schematic diagram of the bridge ground section structure of elimination bumping at bridge-head in the present invention;
Fig. 2 is the generalized section along the bridge construction of A-A line in Fig. 1;
Fig. 3 is the generalized section along the bridge ground section structure of B-B line in Fig. 1;
Fig. 4 is the generalized section along the bridge ground section structure of C-C line in Fig. 1.
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 shown in Figure 1, the bridge ground section structure of elimination bumping at bridge-head provided by the present invention, is arranged between bridge construction 20 and ground 30; This bridge ground section structure 10 comprises: some pile foundations 4, and below the above-ground route being vertically arranged on ground 30, be embedded in soil, 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 on the end face of described cushion cap 3, i.e. the cushion cap 3 described in the connection of bottom of 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 are connected to form entirety by concreting; Between the operation operating period, 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 bears is passed to described pile foundation 4, described pile foundation 4 plays supporting role, vehicular load is passed to the ground be 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 construct web 2 and top board 1.
Bridge ground section structure of the present invention, is applicable to the bridge constructions such as concrete overall large case beam, steel box-girder, precast hollow slab, Precast T-Beam, prefabricated small box girder.
As shown in Figure 1, described bridge ground section structure 10 is at vertical bridge to segmentation, and every segment length controls at about 15m, and is provided with settlement joint 6 between section and section, and this settlement joint 6 runs through described top board 1, web 2 and cushion cap 3.
Described bridge ground section structure 10 is provided with shrinkage joint 7 with the junction of bridge construction 20, and this shrinkage joint makes bridge ground section structure 10 be separated completely with bridge construction 20.
Described pile foundation 4 adopts reinforced concrete structure, or prestressed reinforced concrete construction, or steel work, or steel-concrete combined structure, and this pile foundation 4 is connected to form entirety with described cushion cap 3.
The layout of described pile foundation 4 is by born load and determine in conjunction with settlement Control.
Described cushion cap 3 adopts reinforced concrete structure, and this cushion cap 3 is connected to form 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 adopts reinforced concrete structure, and this web 2 is connected to form entirety with described top board 1.
The magnitude setting of described web 2 is decided by the width of bridge construction 20 and the stressed 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 construction 20.
Described top board 1 adopts 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 construction 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 construction 20.
As shown in Figure 3, at close bridge construction 20 place, be arranged on below the above-ground route on ground 30 with cushion cap 3 junction bottom described web 2, be embedded in soil, 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, in the junction of bridge ground section structure 10 with ground 30, still be arranged on below the above-ground route on ground 30 with cushion cap 3 junction bottom described web 2, be embedded in soil, but web 2 top then flushes with the above-ground route on ground 30 with top board 1 junction, the arm roots of choosing of namely 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 caused, and can by the configuration design of web and top board, make bridge ground section structure consistent with the outline of bridge, landscape effect is better.The present invention effectively can promote the total quality of road, bridge engineering, in the life cycle management of engineering, has certain economic benefit and good social benefit.
Although content of the present invention has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to 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 construction (20) and ground (30); It is characterized in that, this bridge ground section structure (10) comprises:
Some pile foundations (4), below the above-ground route being vertically arranged on ground (30), be embedded in soil, 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 on the end face of described cushion cap (3), the cushion cap (3) described in the connection of bottom of 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) are connected to form entirety; Described top board (1) bears vehicular load, and the vehicular load that top board (1) bears is passed to described pile foundation (4) by described web (2) and cushion cap (3), and vehicular load is passed to the ground be 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, is characterized in that, described bridge ground section structure is applicable to the bridge construction of the overall large case beam of concrete, steel box-girder, precast hollow slab, Precast T-Beam, 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, be provided with settlement joint (6) between section and section, this settlement joint (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 shrinkage joint (7) with the junction of bridge construction (20), and this shrinkage joint (7) make bridge ground section structure (10) be separated completely with bridge construction (20).
5. the bridge ground section structure eliminating bumping at bridge-head as claimed in claim 1, is characterized in that: described pile foundation (4) adopts reinforced concrete structure, or prestressed reinforced concrete construction, or steel work, or steel-concrete combined structure.
6. the as claimed in claim 1 bridge ground section structure eliminating bumping at bridge-head, is characterized in that, described cushion cap (3) adopts reinforced concrete structure, below the above-ground route being arranged on 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) adopts reinforced concrete structure, the magnitude setting of this web (2) is determined by the width of bridge construction (20) and the stressed degree of top board (1).
8. the bridge ground section structure eliminating bumping at bridge-head as claimed in claim 1, is characterized in that: the profile of described web (2) is consistent with the web (201) of bridge construction (20).
9. the bridge ground section structure eliminating bumping at bridge-head as claimed in claim 1, is characterized in that, described top board (1) adopts reinforced concrete structure, or prestressed reinforced concrete construction;
The profile of described top board (1) is consistent with the top board (202) of bridge construction (20);
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 (203) of bridge construction (20).
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 top that described bridge ground section structure terminates in described web (2) flushes with the above-ground route of ground (30), namely described top board (1) choose the position that arm roots flushes with the above-ground route of ground (30).
Priority Applications (1)
| 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 |
Applications Claiming Priority (1)
| 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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| Publication Number | Publication Date |
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| CN104631271A true CN104631271A (en) | 2015-05-20 |
| CN104631271B 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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| CN104631271B (en) | 2016-08-24 |
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