CN201722597U - Combined pile-column type abutment structure - Google Patents
Combined pile-column type abutment structure Download PDFInfo
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- CN201722597U CN201722597U CN2010201842269U CN201020184226U CN201722597U CN 201722597 U CN201722597 U CN 201722597U CN 2010201842269 U CN2010201842269 U CN 2010201842269U CN 201020184226 U CN201020184226 U CN 201020184226U CN 201722597 U CN201722597 U CN 201722597U
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Abstract
The utility model discloses a combined pile-column type abutment structure, comprising at least two abutment foundation piles and abutment cover beams arranged on the foundation piles, wherein the cover beams are respectively provided with a back beam and a support; one side of the back walls are provided with geogrids which are laid in a layered manner; and an eccentric distance, which deviates from the back walls, is arranged among the central line of the support and the central lines of the abutment foundation piles. The technology improves the traditional combined pile-column type abutment structure and leads the applicable height to be capable of reaching 5-8m, which is the first time in China.
Description
Technical field
The utility model relates to bridge and viaduct building field, particularly a kind of compound pile pillar abutment structure.
Background technology
Along with the development of China's communication, increasing sharply of speedway mileage must be built a large amount of bridge structure things.Whether the design of bridge structure thing is reasonable, and whether cost is economical, but whether construction directly influences the quality of whole engineering in the provisional capital.
Bridge top and the bottom structure is an organic whole, and co-operation interacts.Bridge Pier plays a part " forming a connecting link " in bridge structure, bearing dead load and mobile load that bridge superstructure and automobile etc. produce above, and gives foundation with these Load Transfer.Pier not only will bear vertical axis power, horizontal force and the moment of flexure that superstructure produces in addition, also bears wind-force, soil pressure, flowing water pressure and contingent seismic forces, ice pressure, and ship and drift are to the impact of pier etc.The design of Bridge Pier should be taken into account abundant factor, and enough intensity and stability be arranged, and just may make the bridge design scheme of success.
The form of structure that abutment is commonly used has pillar-shaped bridge, light-weight abutment, gravity water wheel, composite abutment, arch bridge abutment etc. at present.The major function of abutment is: supporting main beam, banket behind the baffle platform and bear lateral earth pressure, being connected etc. between embankment and the bridge.
The suitable height of pillar-shaped bridge is below the 5m at present, when the abutment height surpasses 5m, generally adopts the fin-plate type abutment, bored pile foundation.And the abutment height adopts pillar-shaped bridge in 5m the time.Pillar-shaped bridge, easy construction, template is less, and cost is relatively low; And the fin-plate type abutment, template is many slightly, and cost is higher relatively.When the abutment height is bigger, and end bay strides under the little situation in footpath, uses the fin-plate type abutment, and it is more uneconomical that bored pile foundation seems.The thinking that the fin-plate type abutment is dealt with problems is: the abutment height increases, the corresponding increase of earth lateral pressure behind the platform, the moment of flexure that produces in the foundation pile also increases, thereby the thinking of big moment of flexure has appearred resisting with the stronger floor of bending resistance, the mentality of designing of Here it is fin-plate type abutment, it is to resist bigger external force effect with stronger structure purely.In fact, the method that solves this type of problem on engineering usually has two classes, and a class is the resistivity that increases structure, and another kind of is exactly to reduce outside active force by every means.Obviously, the solution thinking of fin-plate type abutment is last class, and this scheme is that the simple stronger structure of employing is resisted bigger external force effect, and this is to owe reasonably to a certain extent.Can the first method that this should just deal with problems be utilized second method to integrate first kind, second method in other words and design the focus place that the abutment structure is a this patent.
The utility model content
The purpose of this utility model provides a kind of compound pile pillar abutment structure, by traditional pillar-shaped bridge structure is improved, better enlarges the scope of application of pillar-shaped bridge.
The technical scheme that the utility model provides is as follows:
A kind of compound pile pillar abutment structure, comprise at least two abutment foundation piles, be arranged on the abutment bent cap on the foundation pile, be respectively equipped with parados and bearing on the described bent cap, described parados one side is provided with the geo-grid that layering is laid, and is provided with the eccentric throw of a deflection parados between described bearing center line and the described abutment foundation pile center line.
Further, described abutment foundation pile is four.
Further, described parados one side is along the geo-grid of at least ten meters of road axis direction settings.
Pillar-shaped bridge is as traditional abutment structure, and generally being suitable for the abutment height is the following highway section of 5m.This patent has been done improvement to traditional pillar-shaped bridge structure, makes it be suitable for and highly can reach 5～8m, and this still belongs to the first time at home.
This patent is by laying 10m or longer geo-grid or fabric (along road width of cloth overall with) in pillar-shaped bridge parados one side along the road axis direction, the layering level is laid in depth of fill scope, layered rolling, thereby with the pillar-shaped bridge co-operation, form an integral body, form the compound pile pillar abutment structure of this patent.
Studies show that in a large number both at home and abroad, can effectively reduce after the laying geo-grid of banketing and banket load and roll the soil pressure relative increment of load action at the platform back, even the abutment height surpasses 5m (at present like this, general abutment height adopts pillar-shaped bridge less than 5m, surpass 5m and adopt the fin-plate type abutment), even reach 8m, and also can be by soil pressure after adopting geo-grid or fabric to effectively reduce platform behind the platform, thus can continue to use pillar-shaped bridge.
This patent compound pile pillar abutment is applicable to the high fill highway section, can effectively reduce the size of soil pressure behind the platform, thereby reduces to act on the transverse load on the pile foundation, makes the mechanical characteristic of abutment approach bridge pier, and its mechanism of action is embodied in the following aspects:
1, parados bankets and lays with the geo-grid layering, and layered rolling can reduce the soil pressure of parados behind the platform so greatly, thereby reduces the maximal bending moment of pile foundation;
2, certain off-centre is set between foundation pile and bent cap, promptly between bearing center line and abutment foundation pile center line, be provided with the eccentric throw of a deflection parados, moment of flexure can part in the foundation pile that causes of top dead load like this, even mostly balances the moment of flexure that soil pressure causes behind the platform in foundation pile;
3, the geological condition of visual surround, the height that bankets behind the platform, abutment pile foundation of suitable increase, as the pile foundation of an abutment be three piles, be four here, can better bear the soil pressure behind the platform jointly.
4, on-the-spot test result shows: under the abutment structural condition of formerly constructing, banket load and roll load action in abutment platform soil pressure behind all between active earth pressure and earth pressue at rest.During design, be that platform soil pressure design load behind will be unsafe to the abutment structure if select active earth pressure for use.This patent combined type pillar-shaped bridge can adopt the design altitude that bankets earlier, the construction technology of the abutment structure of constructing again when construction.
By above-mentioned four measures, even the abutment height is higher, according to the abutment geological conditions, by regulating bent cap and stake eccentric throw, and platform after the design of parados geo-grid, increase pile foundation, adjust construction technology, also can use the compound pile pillar abutment of this patent fully, be suitable for and highly can reach 5～8m.
The utility model has the advantages that:
When 1, at present general abutment height surpasses 5m, just adopt the fin-plate type abutment, bored pile foundation, with respect to pillar-shaped bridge, fin-plate type abutment cost is higher; Adopt the compound pile pillar abutment structure of this patent, can effectively reduce construction costs, a bridge can be saved 20～500,000 yuan and not wait;
2, the pillar-shaped bridge of this patent, easy construction, template is less, and technology is comparatively simple, effectively the reduction of erection time.
3, the flexible structure layer that utilizes geo-grid and filler to constitute with powerful lateral limitation and big rigidity, form platform post-reinforcing body, can eliminate the influence of foundation settlement effectively, can play again the constraint embankment lateral displacement and diffusion load, reduce the effect of embankment vertical displacement, thereby reach the purpose of eliminating bumping at bridge-head.
Description of drawings
Fig. 1 is the structural representation of this patent;
The specific embodiment
Further specify the technical solution of the utility model below in conjunction with drawings and Examples.
As shown in Figure 1, a kind of compound pile pillar abutment structure, comprise four abutment foundation piles 1, be arranged on the abutment bent cap 3 on the foundation pile 1, be respectively equipped with parados 5 and bearing 7 on the bent cap 3, parados 5 one sides are provided with the eccentric throw of a deflection parados along the geo-grid 6 of at least ten meters layerings layings of road axis direction setting between bearing center line 4 and abutment foundation pile 1 center line.
In order to guarantee that this patent novel combination type pillar-shaped bridge structure can better play a role, its construction technology process is as follows:
1, end of the bridge bankets layered rolling to design elevation, and the layering level is laid geo-grid 6 or fabric in the depth of fill scope;
2, carry out the bored pile construction of abutment;
3, carry out bent cap 3 constructions of abutment, the construction of ear wall;
4, after bridge construction finishes, if needed,, excavate unnecessary the banketing in abutment bored pile place by designing requirement.
Those skilled in the art will recognize that, the above-mentioned specific embodiment is exemplary, be in order better to make those skilled in the art can understand this patent, can not be interpreted as it is the restriction that this patent is comprised scope, so long as according to spirit that this patent discloses done anyly be equal to change or modify, all fall into the scope that this patent comprises.
Claims (3)
1. a compound pile pillar abutment structure comprises at least two abutment foundation piles, is arranged on the abutment bent cap on the foundation pile, is respectively equipped with parados and bearing on the described bent cap, it is characterized in that:
Described parados one side is provided with the geo-grid that layering is laid, and is provided with the eccentric throw of a deflection parados between described bearing center line and the described abutment foundation pile center line.
2. compound pile pillar abutment structure according to claim 1 is characterized in that:
Described abutment foundation pile is four.
3. compound pile pillar abutment structure according to claim 1 is characterized in that:
Described parados one side is along the geo-grid of at least ten meters of road axis direction settings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201842269U CN201722597U (en) | 2010-05-10 | 2010-05-10 | Combined pile-column type abutment structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201842269U CN201722597U (en) | 2010-05-10 | 2010-05-10 | Combined pile-column type abutment structure |
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| Publication Number | Publication Date |
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| CN201722597U true CN201722597U (en) | 2011-01-26 |
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| CN2010201842269U Expired - Fee Related CN201722597U (en) | 2010-05-10 | 2010-05-10 | Combined pile-column type abutment structure |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979021A (en) * | 2012-11-21 | 2013-03-20 | 邢台路桥建设总公司 | Construction method for treating vehicle jump at bridge head in highway |
| CN103114521A (en) * | 2013-01-21 | 2013-05-22 | 浙江大学宁波理工学院 | Structure and construction method of junction position of bridge abutment and roadbed |
| CN103806347A (en) * | 2014-03-11 | 2014-05-21 | 四川省交通运输厅交通勘察设计研究院 | Lateral pile-plank structure suitable for rocky abrupt-slope embankment |
| CN105421484A (en) * | 2015-12-25 | 2016-03-23 | 中铁十四局集团有限公司 | Deep pond spanning structure |
| CN109024254A (en) * | 2018-07-25 | 2018-12-18 | 长安大学 | A kind of transition apparatus for eliminating bumping at bridge-head |
| CN109056540A (en) * | 2018-08-28 | 2018-12-21 | 中交上海航道局有限公司 | A kind of construction method of small-sized Reinforced Concrete Simple bridge |
| CN110952456A (en) * | 2019-12-06 | 2020-04-03 | 中铁十八局集团建筑安装工程有限公司 | Pile type bridge construction process |
| CN111560842A (en) * | 2020-05-28 | 2020-08-21 | 中铁五局集团有限公司 | Combined abutment structure for temporary trestle |
| CN111827097A (en) * | 2020-07-06 | 2020-10-27 | 上海崇明水利工程有限公司 | Concatenation formula reinforced concrete bridge abutment structure |
| CN112176853A (en) * | 2020-11-04 | 2021-01-05 | 武汉大学 | Pile-supported damping reinforced earth abutment and construction method thereof |
| 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 |
-
2010
- 2010-05-10 CN CN2010201842269U patent/CN201722597U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979021A (en) * | 2012-11-21 | 2013-03-20 | 邢台路桥建设总公司 | Construction method for treating vehicle jump at bridge head in highway |
| CN103114521A (en) * | 2013-01-21 | 2013-05-22 | 浙江大学宁波理工学院 | Structure and construction method of junction position of bridge abutment and roadbed |
| CN103114521B (en) * | 2013-01-21 | 2015-02-11 | 浙江大学宁波理工学院 | Structure and construction method of junction position of bridge abutment and roadbed |
| CN103806347A (en) * | 2014-03-11 | 2014-05-21 | 四川省交通运输厅交通勘察设计研究院 | Lateral pile-plank structure suitable for rocky abrupt-slope embankment |
| CN103806347B (en) * | 2014-03-11 | 2016-08-17 | 四川省交通运输厅交通勘察设计研究院 | A kind of lateral pile slab structure being applicable to steep rocky slope embankment |
| CN105421484A (en) * | 2015-12-25 | 2016-03-23 | 中铁十四局集团有限公司 | Deep pond spanning structure |
| CN109024254A (en) * | 2018-07-25 | 2018-12-18 | 长安大学 | A kind of transition apparatus for eliminating bumping at bridge-head |
| CN109024254B (en) * | 2018-07-25 | 2020-01-21 | 长安大学 | Transition device for eliminating bump at bridge head |
| CN109056540A (en) * | 2018-08-28 | 2018-12-21 | 中交上海航道局有限公司 | A kind of construction method of small-sized Reinforced Concrete Simple bridge |
| 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 |
| CN110952456A (en) * | 2019-12-06 | 2020-04-03 | 中铁十八局集团建筑安装工程有限公司 | Pile type bridge construction process |
| CN111560842A (en) * | 2020-05-28 | 2020-08-21 | 中铁五局集团有限公司 | Combined abutment structure for temporary trestle |
| CN111827097A (en) * | 2020-07-06 | 2020-10-27 | 上海崇明水利工程有限公司 | Concatenation formula reinforced concrete bridge abutment structure |
| CN111827097B (en) * | 2020-07-06 | 2022-04-05 | 上海崇明水利工程有限公司 | Concatenation formula reinforced concrete bridge abutment structure |
| CN112176853A (en) * | 2020-11-04 | 2021-01-05 | 武汉大学 | Pile-supported damping reinforced earth abutment and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110126 Termination date: 20120510 |