CN104631221A - High-speed railway widening subgrade structure - Google Patents
High-speed railway widening subgrade structure Download PDFInfo
- Publication number
- CN104631221A CN104631221A CN201510086165.XA CN201510086165A CN104631221A CN 104631221 A CN104631221 A CN 104631221A CN 201510086165 A CN201510086165 A CN 201510086165A CN 104631221 A CN104631221 A CN 104631221A
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- Prior art keywords
- bearing sheet
- inverted trapezoidal
- frame construction
- foundation
- speed railway
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Railway Tracks (AREA)
Abstract
The invention discloses a high-speed railway widening subgrade structure which is a reinforced concrete structure. The high-speed railway widening subgrade structure comprises a frame structure and a pile foundation, the frame structure disposed on the pile foundation is inverted trapezoidal and composed of a top plate, four inverted trapezoidal rib plates and bearing plates, the top plate is in the shape of an integral plate, each bearing plate is in the shape of a batten, and the inverted trapezoidal rib plates are arranged between the top plate and the bearing plates. The frame structure is a triple frame, and the four inverted trapezoidal rib plates are vertically arranged between the top plate and the bearing plate. The file foundation is composed of reinforcing foundation piles and is formed by reinforced concrete borehole injection. The pile foundation is connected with frame structure into a whole through the bearing plates, and the reinforcing foundation piles of the pile foundation are arranged under the bearing plates of the frame structure. The top ends of the reinforcing foundation piles are connected with the bottom surfaces of the bearing plates, the three to five reinforcing foundation piles are arranged under each bearing platform according to the height of the frame structure, and the reinforcing foundation piles are perpendicular to the bearing plates. The high-speed railway widening subgrade structure has the advantages of simple structure, high strength, convenience in construction and small influence on existing railway operation and existing subgrade settlement and the like, thereby being particularly applicable to high-speed railway subgrade widening sections.
Description
Technical field
The present invention relates to traffic brick or concrete duct field, particularly relate to high-speed railway safeguarding technology.
Background technology
More domestic high-speed railway main line is built is at present open to traffic, station mostly is subgrade structure, along with Large-scale programming and the construction of inter-city passenger rail, for forming inter-city passenger rail and high-speed railway networking, the inter-city passenger rail that the later stage builds need access in existing high-speed railway main line.When newly built railway introduces existing general fast railway, the general mode adopting side to fill out roadbed, banket on existing general fast Railway Bed Slope, two railway beds are connected, the subsidiary stress helping wide Roadbed Soil to increase can cause existing roadbed generation sedimentation and deformation, and this incorporation way controls not tight general fast railway for settlement request can meet settlement Control and Operational requirements.But, for the existing high-speed railway that settlement Control is very strict, help wide Roadbed Soil to cause sedimentation and deformation can affect the safe operation of high-speed railway.Therefore, high speed railway construction field urgently wishes there is a kind of new earth structure, has both met newly built railway and has introduced existing high-speed railway, and can control to greatest extent again affects the sedimentation and deformation of existing high-speed railway subgrade engineering.
Summary of the invention
The impact that roadbed technology is out of shape existing subgrade settlement is filled out in order to solve existing side.The present invention releases a kind of novel high-speed railway and helps wide subgrade structure, side broad way base is designed to steel concrete inverted trapezoidal frame construction, and the structural base outside existing railway toe arranges pile foundation, so that when being subject to the load actions such as train in structural top, major part active force reaches the outer pile foundation of toe by structure, active force is reached deep layer bearing stratum by pile foundation again, does not extrude existing line dike body, effectively reduces the impact of being out of shape existing subgrade settlement.
A kind of high-speed railway side broad way based structures that the present invention relates to is reinforced concrete structure, and comprise frame construction and pile foundation, frame construction is placed on pile foundation, and frame construction and pile foundation are rigidly connected.
Described frame construction is inverted trapezoidal, is made up of top board, inverted trapezoidal floor, bearing sheet, and top board is overall tabular, bearing sheet is lath-shaped, top board and bearing sheet are horizontally disposed with, and inverted trapezoidal floor is placed between top board and bearing sheet, and inverted trapezoidal floor is vertical with bearing sheet with top board.Inverted trapezoidal floor embeds existing line dike side slope 0.5m, and inverted trapezoidal floor hypotenuse ratio of slope is consistent with existing line dike slope gradient.The top end jib-length of frame construction is 1.0 ~ 2.0m, top plate thickness 0.5 ~ 0.6m
Described frame construction is three frameworks, and simply connected frame width is 5 ~ 6m.Four pieces of parallel inverted trapezoidal floors are vertically installed between top board and bearing sheet, and four pieces of bearing sheets engage with four pieces of inverted trapezoidal floors respectively.
Described bearing sheet is positioned at outside existing embankment toe, is placed under inverted trapezoidal floor, arranges pile foundation under bearing sheet.
Described pile foundation is formed by reinforcing foundation pile, adopts reinforced concrete drilling perfusion to form.Pile foundation is connected with frame construction by bearing sheet, the reinforcing foundation pile of pile foundation is arranged on below the bearing sheet of frame construction, reinforce foundation pile top to be connected with bearing sheet bottom surface, arrange 3 ~ 5 according to frame construction height under every block bearing sheet and reinforce foundation pile, reinforce foundation pile vertical with bearing sheet.
The high-speed railway side broad way based structures that the present invention relates to adopts reinforced concrete pile and frame construction to replace side to fill out roadbed, have simple structure, intensity large, construct convenient, on existing railway operation and the advantage such as existing subgrade settlement impact is little, be specially adapted to high-speed railway subgrade and help broadly section to use.
Accompanying drawing explanation
Fig. 1 is high-speed railway of the present invention side broad way based structures schematic cross-sectional view;
Fig. 2 is high-speed railway of the present invention side broad way based structures schematic perspective view;
Fig. 3 is high-speed railway of the present invention side broad way based structures front schematic view.
Description of symbols in figure:
1, top board 2, inverted trapezoidal floor
3, bearing sheet 4, reinforcing foundation pile
5, existing line dike 6, existing line dike side slope
Detailed description of the invention
By reference to the accompanying drawings technical scheme of the present invention is further illustrated.As shown in the figure, a kind of high-speed railway side broad way based structures that the present invention relates to is reinforced concrete structure, and comprise frame construction and pile foundation, frame construction is placed on pile foundation, and frame construction and pile foundation are rigidly connected.
Described frame construction is inverted trapezoidal, is made up of top board 1, inverted trapezoidal floor 2 and bearing sheet 3, and top board 1 and bearing sheet 3 are horizontally disposed with, and inverted trapezoidal floor 2 is placed between top board 1 and bearing sheet 3, and inverted trapezoidal floor 2 is vertical with bearing sheet 3 with top board 1.
Described frame construction is three frameworks, and simply connected frame width is 5 ~ 6m.Top board 1 is in overall tabular, and bearing sheet 3 is lath-shaped, and four pieces of parallel inverted trapezoidal floors 2 are vertically installed between top board 1 and bearing sheet 3.The upper side edge of four pieces of inverted trapezoidal floors 2 engages with the downside of top board 1, and the lower side of four pieces of inverted trapezoidal floors 2 engages respectively with the upper side of four pieces of bearing sheets 3.Top board 1 end jib-length is 1.0 ~ 2.0m, and top board 1 thickness is 0.5 ~ 0.6m.
Described pile foundation is formed by reinforcing foundation pile 4, adopts reinforced concrete drilling perfusion to form.Pile foundation is connected with frame construction by bearing sheet 3, the reinforcing foundation pile 4 of pile foundation is arranged on the bottom surface of the bearing sheet 3 of frame construction, reinforce foundation pile 4 top to engage with bearing sheet 3 bottom surface, every block bearing sheet arranges 3 ~ 5 for 3 times and reinforces foundation pile 4, reinforces foundation pile 4 vertical with bearing sheet 3.
The high-speed railway side broad way based structures that the present invention relates to is for high-speed railway and inter-city passenger rail joint, and reinforced concrete pile and frame construction replace side to fill out roadbed, do not extrude the body of existing line dike 5.The inverted trapezoidal floor 2 of frame construction leans against existing line dike side slope 6 side, and the hypotenuse ratio of slope of inverted trapezoidal floor 2 is consistent with the ratio of slope of existing line dike side slope 6, and inverted trapezoidal floor 2 embeds 0.5m in existing line dike side slope 6.Frame construction is reinforced between foundation pile with boring and is connected by bearing sheet 3, and frame construction adopts template to build, and is off-state, stops the build joint of one fixed width between frame construction unit.
The high-speed railway side broad way based structures that the present invention relates to is poured into a mould by steel concrete and is formed, concrete enforcement order is, the first step to be constructed outward ground stabilization foundation pile 4 at existing line dike 5 toe, second step construction bearing platform plate 3,3rd step construction inverted trapezoidal floor 2,4th step construction top board 1, finally carry out other attached constructions of roadbed at frame construction top, structure roof 1 end face is not less than 1.5m to sleeper bottom surface depth of packing (containing railway ballast).
Claims (5)
1. a high-speed railway side broad way based structures, it is characterized in that, comprise frame construction and pile foundation, frame construction is placed on pile foundation, and frame construction and pile foundation are rigidly connected;
Described frame construction is inverted trapezoidal, is made up of top board, inverted trapezoidal floor, bearing sheet, and top board is overall tabular, bearing sheet is lath-shaped, top board and bearing sheet are horizontally disposed with, and inverted trapezoidal floor is placed between top board and bearing sheet, and inverted trapezoidal floor is vertical with bearing sheet with top board;
Described pile foundation is formed by reinforcing foundation pile, adopts reinforced concrete drilling perfusion to form; Pile foundation is connected with frame construction by bearing sheet, and the reinforcing foundation pile of pile foundation is arranged on below the bearing sheet of frame construction, reinforces foundation pile top and is connected with bearing sheet bottom surface, reinforce foundation pile vertical with bearing sheet.
2. high-speed railway side according to claim 1 broad way based structures, it is characterized in that, described frame construction adopts three frameworks, simply connected frame width is 5 ~ 6m, four pieces of parallel inverted trapezoidal floors are vertically installed between top board and bearing sheet, and four pieces of bearing sheets engage with four pieces of inverted trapezoidal floors respectively.
3. high-speed railway side according to claim 2 broad way based structures, it is characterized in that, the top end jib-length of described frame construction is 1.0 ~ 2.0m, top plate thickness 0.5 ~ 0.6m.
4. high-speed railway side according to claim 2 broad way based structures, it is characterized in that, the inverted trapezoidal floor of described frame construction embeds existing roadbed side slope 0.5m, and inverted trapezoidal floor hypotenuse ratio of slope is consistent with existing side slope of embankment ratio of slope.
5. high-speed railway side according to claim 1 broad way based structures, it is characterized in that, described bearing sheet is positioned at outside existing embankment toe, is placed under inverted trapezoidal floor, under bearing sheet, pile foundation is set, arranges 3 ~ 5 according to frame construction height under every block bearing sheet and reinforce foundation pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510086165.XA CN104631221A (en) | 2015-02-17 | 2015-02-17 | High-speed railway widening subgrade structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510086165.XA CN104631221A (en) | 2015-02-17 | 2015-02-17 | High-speed railway widening subgrade structure |
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| CN104631221A true CN104631221A (en) | 2015-05-20 |
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| CN201510086165.XA Pending CN104631221A (en) | 2015-02-17 | 2015-02-17 | High-speed railway widening subgrade structure |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105040540A (en) * | 2015-07-21 | 2015-11-11 | 成都迅德科技有限公司 | Roadbed reinforcing structure for road protruding out of ground |
| CN105821718A (en) * | 2016-01-20 | 2016-08-03 | 中铁二院工程集团有限责任公司 | Widening reinforcing structure tightly adjacent to existing ballastless track roadbed |
| CN106522037A (en) * | 2016-12-26 | 2017-03-22 | 中铁第四勘察设计院集团有限公司 | Widening subgrade structure based on existing railway subgrade and construction method of widening subgrade structure |
| CN106545027A (en) * | 2016-10-16 | 2017-03-29 | 华中科技大学 | A kind of ultra-deep washes away the steel pipe pile reinforced method of foundation pile apron |
| CN107938438A (en) * | 2017-12-01 | 2018-04-20 | 中铁二院工程集团有限责任公司 | High-speed railway box road structure and construction method |
| CN110144767A (en) * | 2019-04-03 | 2019-08-20 | 中铁第四勘察设计院集团有限公司 | Help broad way based structures and construction method |
| CN110761127A (en) * | 2019-12-04 | 2020-02-07 | 中铁二院工程集团有限责任公司 | Rock foundation existing high-speed railway embankment force balance side width structure and construction method |
| CN110820432A (en) * | 2019-12-04 | 2020-02-21 | 中铁二院工程集团有限责任公司 | Existing high-speed railway embankment side width structure of hard-plastic soil foundation and construction method |
| CN110924417A (en) * | 2019-12-02 | 2020-03-27 | 中天建设集团有限公司 | Slope construction integrated design method for retaining soil by using building structure |
| CN111041918A (en) * | 2019-12-25 | 2020-04-21 | 西南交通大学 | Embankment widening method |
| CN111172833A (en) * | 2020-01-13 | 2020-05-19 | 西南交通大学 | Construction method of steep slope high embankment structure |
| CN112252168A (en) * | 2020-11-16 | 2021-01-22 | 西南交通大学 | Ribbed plate type retaining wall bridge abutment and construction method |
| CN112695656A (en) * | 2020-12-29 | 2021-04-23 | 广州地铁设计研究院股份有限公司 | Box culvert construction method for road widening and box culvert |
| CN115387188A (en) * | 2022-09-19 | 2022-11-25 | 杭州禹航建设工程有限公司 | Road widening formwork structure and construction method applying same |
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| KR20100061407A (en) * | 2009-12-24 | 2010-06-07 | 서평원 | Footpath enlarging apparatus for slope edges in road |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105040540A (en) * | 2015-07-21 | 2015-11-11 | 成都迅德科技有限公司 | Roadbed reinforcing structure for road protruding out of ground |
| CN105821718A (en) * | 2016-01-20 | 2016-08-03 | 中铁二院工程集团有限责任公司 | Widening reinforcing structure tightly adjacent to existing ballastless track roadbed |
| CN106545027A (en) * | 2016-10-16 | 2017-03-29 | 华中科技大学 | A kind of ultra-deep washes away the steel pipe pile reinforced method of foundation pile apron |
| CN106522037A (en) * | 2016-12-26 | 2017-03-22 | 中铁第四勘察设计院集团有限公司 | Widening subgrade structure based on existing railway subgrade and construction method of widening subgrade structure |
| CN106522037B (en) * | 2016-12-26 | 2018-09-25 | 中铁第四勘察设计院集团有限公司 | Side broad way based structures based on existing railway roadbed and its construction method |
| CN107938438A (en) * | 2017-12-01 | 2018-04-20 | 中铁二院工程集团有限责任公司 | High-speed railway box road structure and construction method |
| CN110144767A (en) * | 2019-04-03 | 2019-08-20 | 中铁第四勘察设计院集团有限公司 | Help broad way based structures and construction method |
| CN110144767B (en) * | 2019-04-03 | 2024-06-07 | 中铁第四勘察设计院集团有限公司 | Side-width roadbed structure and construction method |
| CN110924417A (en) * | 2019-12-02 | 2020-03-27 | 中天建设集团有限公司 | Slope construction integrated design method for retaining soil by using building structure |
| CN110820432A (en) * | 2019-12-04 | 2020-02-21 | 中铁二院工程集团有限责任公司 | Existing high-speed railway embankment side width structure of hard-plastic soil foundation and construction method |
| CN110761127A (en) * | 2019-12-04 | 2020-02-07 | 中铁二院工程集团有限责任公司 | Rock foundation existing high-speed railway embankment force balance side width structure and construction method |
| CN111041918A (en) * | 2019-12-25 | 2020-04-21 | 西南交通大学 | Embankment widening method |
| CN111172833A (en) * | 2020-01-13 | 2020-05-19 | 西南交通大学 | Construction method of steep slope high embankment structure |
| CN112252168A (en) * | 2020-11-16 | 2021-01-22 | 西南交通大学 | Ribbed plate type retaining wall bridge abutment and construction method |
| CN112695656A (en) * | 2020-12-29 | 2021-04-23 | 广州地铁设计研究院股份有限公司 | Box culvert construction method for road widening and box culvert |
| CN112695656B (en) * | 2020-12-29 | 2022-07-12 | 广州地铁设计研究院股份有限公司 | Box culvert construction method for road widening and box culvert |
| CN115387188A (en) * | 2022-09-19 | 2022-11-25 | 杭州禹航建设工程有限公司 | Road widening formwork structure and construction method applying same |
| CN115387188B (en) * | 2022-09-19 | 2023-12-26 | 杭州禹航建设工程有限公司 | Road widening template structure and construction method using same |
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Application publication date: 20150520 |