CN103194962B - Structure and construction method for reducing abutment staggering based on flexible pile - Google Patents
Structure and construction method for reducing abutment staggering based on flexible pile Download PDFInfo
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- CN103194962B CN103194962B CN201310158345.5A CN201310158345A CN103194962B CN 103194962 B CN103194962 B CN 103194962B CN 201310158345 A CN201310158345 A CN 201310158345A CN 103194962 B CN103194962 B CN 103194962B
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Abstract
The invention relates to a structure and a construction method for reducing abutment staggering based on a flexible pile. The structure is characterized by comprising an approach slap arranged between integrated abutment girders and a flexible pile arranged below the approach slap, wherein the flexible pile is buried in a pre-reaming hole in a roadbed soil layer; the diameter of the pre-reaming hole is larger than the diameter of the flexible pile; and a fine sand layer is filled in a clearance between the pre-reaming hole and the flexible pile. The structure disclosed by the invention has the beneficial effects that due to great flexibility of the flexible pile and because fine sand can reduce resistance of surrounding soil on the pile, horizontal anti-pushing flexibility is enhanced, so that a better deformation ability of the flexible pile is guaranteed; limitation on the approach slap in the horizontal direction is quite low under horizontal displacement of the approach slap, so that the approach slap can move in a comparatively free manner, and most importantly, the flexible pile can provide a vertical support force for the approach slap as a simple supporting base, so as to reduce calculation length of the approach slap; and in case of differential settlement between the abutment and rear fill section, the deformation of the approach slap is greatly reduced under the supporting of the flexible pile, so that the problem of abutment staggering is effectively reduced.
Description
Minimizing abutment based on flexible pile is jumped structure and the construction method of car
technical field:
The present invention relates to a kind of minimizing abutment based on flexible pile and jump structure and the construction method of car, is for bridge construction, can, for beam front axle beam, belong to bridge field especially.
background technology:
Bumping at bridge-head refers to that road is out of shape with the road surface that is connected region appearance or the attachment strap of the bridge platform back of the body, fracture, even cheat groove, thereby affected normal use and the overall assessment of people to high-grade highway of high-grade highway, also had a strong impact on safety, speed, the comfortable and application life of driving simultaneously.General and complicated problem during bumping at bridge-head becomes highway construction and runs, it relates to Embankment Subsidence, approach fill material, abutment and type of foundation thereof, the structural shape of bridge, the processing of bridge and subgrade construction seam section, transition slab at bridge head, the impact of the factors such as road surface and construction method.Although abutment and filling behind abutment are the structures of two different in kinds. the pressure that abutment acts on ground is greater than filling behind abutment, because abutment foundation has generally all carried out consolidation process, so generally there is not Vertical Settlement distortion.And the ground of filling behind abutment is not generally reinforced, the distortion of its Vertical Settlement is all much larger than the foundation deformation under abutment, and this differential deformation due to ground, is reflected to road surface, top, has just occurred the relative settlement of abutment and filling behind abutment section.In addition, settling amount hypothesis under the effect of natural ground own wt completes, so when natural ground soil is built embankment, due to embankment filled soil Gravitative Loads, make natural ground bear himself weight imposed load in addition, thereby make natural ground soil become underconsolidated soil, cause the natural ground under embankment Gravitative Loads to produce sedimentation and deformation, and the size of this sedimentation and deformation is affected by the soil property of embankment filled soil and its depth of fill, during the identical depth of fill, the unit weight banketing is larger, and foundation settlement distortion is also larger; Identical banketing during unit weight, the Gao Yue great that bankets, foundation settlement distortion is also larger.The excessive attachment strap that just may cause of foundation settlement is out of shape, and causes abutment jumping car.Bumping at bridge-head brings a lot of harm, as the speed of 1. reduction drivings; 2. easily cause driving accident; 3. affect the life-span of using and driving a vehicle at shrinkage joint etc.
summary of the invention:
In order to overcome above-mentioned technical barrier, the object of the invention is to by structural configuration and plastoelastic organic application cleverly, constructed structure and construction method that a kind of minimizing abutment based on flexible pile is jumped car.
The minimizing abutment that the present invention is based on flexible pile is jumped the structure of car, it is characterized in that: comprise the attachment strap that is located between Integral Abutment Bridge and be located at the flexible pile below attachment strap, described flexible pile is embedded in the reaming in advance of roadbed soil layer, the hole of described reaming is in advance large compared with the stake footpath of flexible pile, in the space between reaming in advance and flexible pile, fills fine sand layer.
In roadbed soil layer below above-mentioned attachment strap, at interval of certain distance, squeeze into a row flexible pile.
The minimizing abutment that the present invention is based on flexible pile is jumped the construction method of car, it is characterized in that: the structure that described minimizing abutment based on flexible pile is jumped car comprises the attachment strap being located between Integral Abutment Bridge and is located at the flexible pile below attachment strap, described flexible pile is embedded in the reaming in advance of roadbed soil layer, the hole of described reaming is in advance large compared with the stake footpath of flexible pile, in space between reaming in advance and flexible pile, fill fine sand layer, during construction, prefabricated flexible pile, more reserved reinforcing bars of pile cover when prefabricated, according to the reaming in advance in roadbed soil layer of the size of flexible pile, flexible pile is installed after reaming, in the space of reaming in advance and flexible pile, inject fine sand layer again, and tamp, finally the reinforcing bar of reinforcing bar reserved on flexible pile and attachment strap is held together, build attachment strap.
Beneficial effect of the present invention is: the flexibility of flexible pile is very large, fine sand also can reduce the native resistance to stake of stake week, the anti-flexibility that pushes away of level increases, make flexible pile there is better deformability, under the horizontal movement effect of attachment strap, restriction to the horizontal direction of attachment strap is very little, attachment strap can be moved more freely, most importantly, flexible pile can provide a vertical support force to attachment strap, be equivalent to a bearing simply, relatively reduced the calculated length of attachment strap, when the generation relative settlement of abutment and filling behind abutment section, supporting role due to flexible pile, the distortion of attachment strap just greatly reduces, thereby effectively reduced the problem of abutment jumping car.
accompanying drawing explanation:
Fig. 1 is the organigram that flexible pile is applied in whole bridge;
Fig. 2 is the organigram that flexible pile is applied in common seamed bridge;
Fig. 3 is stake below attachment strap and the detail drawing of fine sand;
Fig. 4 is the sectional drawing under direction across bridge attachment strap;
The profile of Fig. 5 stake and fine sand;
Label declaration: 1-attachment strap, 2-flexible pile, 3-soil layer, 4-fine sand layer.
the specific embodiment:
the minimizing abutment that the present invention is based on flexible pile is jumped the structure of car, comprise the attachment strap 1 being located between Integral Abutment Bridge and be located at attachment strap 1 flexible pile 2 below, flexible pile 2 is embedded in the reaming in advance 5 of roadbed soil layer 3, the hole of described reaming is in advance large compared with the stake footpath of flexible pile, fills fine sand layer 4 in the space between reaming in advance and flexible pile.
For effective support, in the roadbed soil layer below above-mentioned attachment strap, at interval of certain distance, squeeze into a row flexible pile.
The minimizing abutment that the present invention is based on flexible pile is jumped the construction method of car, the structure that described minimizing abutment based on flexible pile is jumped car comprises the attachment strap being located between Integral Abutment Bridge and is located at the flexible pile below attachment strap, described flexible pile is embedded in the reaming in advance of roadbed soil layer, the hole of described reaming is in advance large compared with the stake footpath of flexible pile, in space between reaming in advance and flexible pile, fill fine sand layer, during construction, prefabricated flexible pile, more reserved reinforcing bars of pile cover when prefabricated, according to the reaming in advance in roadbed soil layer of the size of flexible pile, flexible pile is installed after reaming, in the space of reaming in advance and flexible pile, inject fine sand layer again, and tamp, finally the reinforcing bar of reinforcing bar reserved on flexible pile and attachment strap is held together, build attachment strap.
Beneficial effect of the present invention is: the flexibility of flexible pile is very large, fine sand also can reduce the native resistance to stake of stake week, the anti-flexibility that pushes away of level increases, make flexible pile there is better deformability, under the horizontal movement effect of attachment strap, restriction to the horizontal direction of attachment strap is very little, attachment strap can be moved more freely, most importantly, flexible pile can provide a vertical support force to attachment strap, be equivalent to a bearing simply, relatively reduced the calculated length of attachment strap, when the generation relative settlement of abutment and filling behind abutment section, supporting role due to flexible pile, the distortion of attachment strap just greatly reduces, thereby effectively reduced the problem of abutment jumping car.
The foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (1)
1. a minimizing abutment based on flexible pile is jumped the construction method of car, it is characterized in that: the structure that described minimizing abutment based on flexible pile is jumped car comprises the attachment strap being located between Integral Abutment Bridge and is located at the flexible pile below attachment strap, described flexible pile is embedded in the reaming in advance of roadbed soil layer, the hole of described reaming is in advance large compared with the stake footpath of flexible pile, in space between reaming in advance and flexible pile, fill fine sand layer, during construction, prefabricated flexible pile, more reserved reinforcing bars of pile cover when prefabricated, according to the reaming in advance in roadbed soil layer of the size of flexible pile, flexible pile is installed after reaming, in the space of reaming in advance and flexible pile, inject fine sand layer again, and tamp, finally the reinforcing bar of reinforcing bar reserved on flexible pile and attachment strap is held together, build attachment strap, in roadbed soil layer below described attachment strap, at interval of certain distance, squeeze into a row flexible pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310158345.5A CN103194962B (en) | 2013-05-03 | 2013-05-03 | Structure and construction method for reducing abutment staggering based on flexible pile |
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| CN201310158345.5A CN103194962B (en) | 2013-05-03 | 2013-05-03 | Structure and construction method for reducing abutment staggering based on flexible pile |
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| CN103194962A CN103194962A (en) | 2013-07-10 |
| CN103194962B true CN103194962B (en) | 2014-12-10 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103628376B (en) * | 2013-11-20 | 2016-05-18 | 长安大学 | Bumping at bridge-head control structure and laying method thereof based on concrete composite road surface |
| CN104652256B (en) * | 2014-12-24 | 2016-09-07 | 福州大学 | A kind of seamless bridge abutment construction improving Horizontal Seismic performance |
| CN104563149B (en) * | 2015-01-17 | 2016-03-09 | 福州大学 | A kind of semi-rigid joint integral seamless bridge construction of steel sheet pile supporting and construction method |
| CN104562921B (en) * | 2015-01-17 | 2016-05-04 | 福州大学 | A kind of construction method that connects the Integral Abutment Bridge of structure with dog bone shape |
| CN108103923A (en) * | 2017-12-01 | 2018-06-01 | 浙江工业大学 | A kind of anti-bumping at bridge-head device of bridge |
| CN110485266A (en) * | 2019-08-22 | 2019-11-22 | 浙江工业大学 | A kind of road-bridge transition section road structure and construction method based on waste tire |
| CN113512945B (en) * | 2021-04-20 | 2023-05-05 | 中交第三公路工程局有限公司 | Variable-rigidity splicing device and method for road bridge and road tunnel connecting section |
| CN113073537B (en) * | 2021-04-25 | 2022-03-01 | 王拴保 | Bridge approach structure of highway engineering and construction method thereof |
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| 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 |
| CN203295966U (en) * | 2013-05-03 | 2013-11-20 | 福州大学 | Structure for reducing bumping of bridge abutment based on flexible piles |
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- 2013-05-03 CN CN201310158345.5A patent/CN103194962B/en not_active Expired - Fee Related
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| JP2009203767A (en) * | 2008-02-29 | 2009-09-10 | Railway Technical Res Inst | Aseismatic reinforcing method and reinforcing structure for structure |
| KR20090130637A (en) * | 2008-06-16 | 2009-12-24 | 한국철도기술연구원 | Fill-up structure for back-area of rigid structure and construction method of the same |
| KR20120020385A (en) * | 2010-08-30 | 2012-03-08 | 한국도로공사 | A high strength concrete pier construction method and the pier thereby |
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| CN103194962A (en) | 2013-07-10 |
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