CN203807904U - Lightweight bridgehead roadbed of bubble-mixed lightweight soil and expandable polystyrene (EPS) combined block - Google Patents
Lightweight bridgehead roadbed of bubble-mixed lightweight soil and expandable polystyrene (EPS) combined block Download PDFInfo
- Publication number
- CN203807904U CN203807904U CN201420158965.9U CN201420158965U CN203807904U CN 203807904 U CN203807904 U CN 203807904U CN 201420158965 U CN201420158965 U CN 201420158965U CN 203807904 U CN203807904 U CN 203807904U
- Authority
- CN
- China
- Prior art keywords
- bridgehead
- eps
- layer
- air bubble
- roadbed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Road Paving Structures (AREA)
Abstract
The utility model discloses a lightweight bridgehead roadbed of a bubble-mixed lightweight soil and expandable polystyrene (EPS) combined block. The lightweight bridgehead roadbed comprises a foundation ditch excavated in the outer side of a bridgehead, wherein a cushion layer, an EPS block layer, a bubble-mixed lightweight soil layer and a pavement structure layer are sequentially paved inside the foundation ditch from bottom to top; the top surface of the pavement structure layer is flush with the bridge floor. In the bridgehead roadbed, the bottom is filled by adopting the EPS block, and the bubble-mixed lightweight soil is cast into the upper part, so that the non-absorbent characteristics of the EPS block are developed, the compressive strength of the bubble-mixed lightweight soil is utilized, and the problems that the independent EPS block structure is insufficient in compressive strength, and the independent bubble-mixed lightweight soil is overlarge in weight, has certain hygroscopic property, and is inappropriate for filling a long-term immersion roadbed are solved. Compared with the traditional bridgehead roadbed, the lightweight bridgehead roadbed has the advantages that the EPS block roadbed and the bubble-mixed lightweight soil roadbed are simultaneously absorbed, the weight of the roadbed can be effectively relieved, the settlement difference of the bridgehead roadbed is controlled, and the phenomenon of bump at the bridgehead is avoided. The bridgehead roadbed is simple and quick to construct, and has significant economic benefits.
Description
Technical field
The utility model, for highway construction field, particularly relates to a kind of lightweight Bridgehead by Blastig of air bubble mix light-textured soil associating EPS piece.
Background technology
Due to Bridgehead by Blastig banket and the vertical rigidity of foundation soil much smaller than the rigidity of bridge and its underpart pile foundation, thereby Bridgehead by Blastig will obviously be greater than the settling amount of bridge in work progress with the settling amount of construction, make bridge and roadbed join domain road surface occur significant change of longitudinal grade, thus cause vehicle by time produce jump phenomenon.Bumping at bridge-head is a great problem of highway construction, is also the problem of the medium-term and long-term existence of road occupation process.The area that is weak soil for ground, because the compressibilty of soft foundation is large, the fixed cycle is long, and vehicle bump at bridge ends is even more serious.Bumping at bridge-head can affect road speed and comfort level, and brings hidden danger to traffic safety.
Conventional platform back of the body roadbed normally excavates, changes the technical measures punishments such as back-up sand gravel, surcharge preloading and transition slab at bridge head through ground processing, preloading are counter, but vehicle bump at bridge ends is still very general, need to drop into every year a large amount of man power and materials and carry out maintenance, make vehicle bump at bridge ends respite, but all fail thoroughly to solve.
At present existing EPS piece light road foundation and air bubble mix light-textured soil roadbed are for solving problem of vehicle bump at bridge head, and for alleviating Bridgehead by Blastig relative settlement successful, both features are as follows:
(1) EPS piece light road foundation.EPS piece is polystyrene foam block, and in engineering, conventional unit weight is only 0.02kN/m
3～0.03kN/m
3.And Roadbed Soil density is generally 18kN kg/m
3, therefore, adopt EPS piece to fill out and can significantly reduce roadbed deadweight as Bridgehead by Blastig, alleviate the compression to foundation soil, reach the object of controlling subgrade settlement; EPS piece water absorption rate is low, and long period of soaking own wt in water also can not increase.But it is lower that the intensity of EPS plate is less than 0.2MPa intensity, under the effect of point load, very easily destroy, need to lay at roadbed top one deck steel concrete cushion coat, thereby make construction complicated, cost is high.
(2) air bubble mix light-textured soil roadbed.Air bubble mix light-textured soil is by the bubble population of preparing, cement, water and adds the micropore class material that material becomes by certain mixing ratio condensation by mixing, is generally 4.0kN/m for the unit weight of roadbed filling
3～6.0kN/m
3.Unit weight be banket 1/3～1/5.Air bubble mix light-textured soil also can be used as a kind of light filler with EPS piece is the same, in order to control Bridgehead by Blastig settlement difference; The slightly nearly 1MPa of air bubble mix light-textured soil resistance to compression, can directly use as roadbed.But air bubble mix light-textured soil has certain water imbibition, in immersion situation for a long time, can increase unit weight.
Utility model content
For solving EPS piece compressive strength deficiency, air bubble mix light-textured soil weight is bigger than normal and have certain water imbibition, the problem of the roadbed filling that should not be used for soaking for a long time, and the utility model provides a kind of lightweight Bridgehead by Blastig of air bubble mix light-textured soil associating EPS piece.
The utility model solves the technical scheme that its technical problem adopts: a kind of lightweight Bridgehead by Blastig of air bubble mix light-textured soil associating EPS piece, be included in the foundation trench of end of the bridge outside excavation, in foundation trench, be equipped with successively from the bottom to top bed course, EPS piece layer, air bubble mix light-textured soil layer and road surface structare layer, the end face of road surface structare layer is concordant with bridge floor, EPS piece layer is by tight stacking formation of some EPS pieces, and air bubble mix light-textured soil layer is integrated the air bubble mix light-textured soil that is cast in EPS piece layer upside.
Be further used as the improvement of technical solutions of the utility model, the arranged on left and right sides inwall of foundation trench is equipped with along the baffle plate of road surface bearing of trend.
Be further used as the improvement of technical solutions of the utility model, baffle plate is cast-in-place or Prefabricated Concrete plate.
Be further used as the improvement of technical solutions of the utility model, trapezoidal big up and small down in the longitudinal cross-section along road surface bearing of trend of foundation trench.
Be further used as the improvement of technical solutions of the utility model, bed course is layer of sand, and the thickness of layer of sand is 30cm.
Be further used as the improvement of technical solutions of the utility model, bed course is plain concrete layer, and the thickness of plain concrete layer is 10cm, and strength grade is C10.
Be further used as the improvement of technical solutions of the utility model, the unit weight of EPS piece is 0.025kN/m
3～0.030kN/m
3.
Be further used as the improvement of technical solutions of the utility model, the unit weight of described air bubble mix light-textured soil is 4.0kN/m
3～6.0kN/m
3.
The beneficial effects of the utility model: in the lightweight Bridgehead by Blastig of this air bubble mix light-textured soil associating EPS piece, bottom adopts EPS piece to fill, air bubble mix light-textured soil is built on top, bring into play the not water absorption character of EPS piece, also utilized the high compressive strength of air bubble mix light-textured soil, solve independent EPS block structure compressive strength deficiency, and separately air bubble mix light-textured soil weight is bigger than normal and have certain water imbibition, the problem of the roadbed filling that should not be used for soaking for a long time.The utility model, compared with traditional Bridgehead by Blastig, has been drawn the advantage of EPS piece roadbed and air bubble mix light-textured soil roadbed simultaneously, can effectively alleviate roadbed weight, controls Bridgehead by Blastig settlement difference, avoids producing vehicle bump at bridge ends.The construction of this Bridgehead by Blastig is simple and quick, is particularly useful for deep soft foundation Bridgehead by Blastig and fills, and can avoid soft base to carry out ground processing, has significant economic benefit.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Fig. 1 is the utility model example structure front view;
Fig. 2 is the utility model example structure lateral view.
Detailed description of the invention
With reference to Fig. 1, Fig. 2, the utility model provides a kind of air bubble mix light-textured soil associating EPS lightweight Bridgehead by Blastig of piece, is included in the foundation trench of end of the bridge 1 outside excavation, trapezoidal big up and small down in the longitudinal cross-section along road surface bearing of trend of foundation trench.In foundation trench, be equipped with successively from the bottom to top bed course 2, EPS piece layer 3, air bubble mix light-textured soil layer 4 and road surface structare layer 5, the end face of road surface structare layer 5 is concordant with bridge floor 6, EPS piece layer 3 is by tight stacking formation of some EPS pieces, and air bubble mix light-textured soil layer 4 is integrated the air bubble mix light-textured soil that is cast in EPS piece layer 3 upside.The arranged on left and right sides inwall of foundation trench is equipped with the concrete plate 7 along road surface bearing of trend.
Concrete, after bridge construction has been constructed, start the Bridgehead by Blastig of constructing.First according to embankment settlement calculation cutting depth, excavate the foundation trench of respective depth below former foundation soil face, adopt construction machinery to roll foundation trench bottom surface, degree of compaction reaches pre-provisioning request.Prefabricated or In-situ cast concrete board 7 is set in both sides subsequently, and concrete plate 7 plays protection EPS piece and air bubble mix light-textured soil.Then lay sand or plain concrete cushion layer 2, lay EPS piece thereon, the unit weight of EPS piece is 0.025kN/m
3～0.030kN/m
3.And then build air bubble mix light-textured soil in the top casting of EPS piece, the unit weight of air bubble mix light-textured soil is 4.0kN/m
3～6.0kN/m
3.Reach after requirement until air bubble mix light-textured soil intensity, can carry out at top road surface structare layer laying work.
In the lightweight Bridgehead by Blastig of this air bubble mix light-textured soil associating EPS piece, bottom adopts EPS piece to fill, air bubble mix light-textured soil is built on top, bring into play the not water absorption character of EPS piece, also utilized the high compressive strength of air bubble mix light-textured soil, solve independent EPS block structure compressive strength deficiency, and separately air bubble mix light-textured soil weight is bigger than normal and have certain water imbibition, the problem of the roadbed filling that should not be used for soaking for a long time.The utility model, compared with traditional Bridgehead by Blastig, has been drawn the advantage of EPS piece roadbed and air bubble mix light-textured soil roadbed simultaneously, can effectively alleviate roadbed weight, controls Bridgehead by Blastig settlement difference, avoids producing vehicle bump at bridge ends.The construction of this Bridgehead by Blastig is simple and quick, is particularly useful for deep soft foundation Bridgehead by Blastig and fills, and can avoid soft base to carry out ground processing, has significant economic benefit.
As the utility model preferred embodiment, when bed course 2 is layer of sand, the thickness of bed course 2 is 30cm; When bed course 2 is plain concrete layer, the thickness of bed course 2 is 10cm, and the strength grade of plain concrete layer is C10.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to the utility model spirit, and the modification that these are equal to or replacement are all included in the application's claim limited range.
Claims (8)
1. the lightweight Bridgehead by Blastig of an air bubble mix light-textured soil associating EPS piece, it is characterized in that: the foundation trench that is included in end of the bridge outside excavation, in described foundation trench, be equipped with successively from the bottom to top bed course, EPS piece layer, air bubble mix light-textured soil layer and road surface structare layer, the end face of described road surface structare layer is concordant with bridge floor, described EPS piece layer is by tight stacking formation of some EPS pieces, and described air bubble mix light-textured soil layer is integrated the air bubble mix light-textured soil that is cast in described EPS piece layer upside.
2. the lightweight Bridgehead by Blastig of air bubble mix light-textured soil associating EPS piece according to claim 1, is characterized in that: the arranged on left and right sides inwall of described foundation trench is equipped with along the baffle plate of road surface bearing of trend.
3. the lightweight Bridgehead by Blastig of air bubble mix light-textured soil associating EPS piece according to claim 2, is characterized in that: described baffle plate is cast-in-place or Prefabricated Concrete plate.
4. according to the lightweight Bridgehead by Blastig of the air bubble mix light-textured soil associating EPS piece described in claim 1,2 or 3, it is characterized in that: trapezoidal big up and small down in the longitudinal cross-section along road surface bearing of trend of described foundation trench.
5. according to the lightweight Bridgehead by Blastig of the air bubble mix light-textured soil associating EPS piece described in claim 1,2 or 3, it is characterized in that: described bed course is layer of sand, the thickness of described layer of sand is 30cm.
6. according to the lightweight Bridgehead by Blastig of the air bubble mix light-textured soil associating EPS piece described in claim 1,2 or 3, it is characterized in that: described bed course is plain concrete layer, the thickness of described plain concrete layer is 10cm, and strength grade is C10.
7. according to the lightweight Bridgehead by Blastig of the air bubble mix light-textured soil associating EPS piece described in claim 1,2 or 3, it is characterized in that: the unit weight of described EPS piece is 0.025kN/m
3～0.030kN/m
3.
8. according to the lightweight Bridgehead by Blastig of the air bubble mix light-textured soil associating EPS piece described in claim 1,2 or 3, it is characterized in that: the unit weight of described air bubble mix light-textured soil is 4.0kN/m
3～6.0kN/m
3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420158965.9U CN203807904U (en) | 2014-04-02 | 2014-04-02 | Lightweight bridgehead roadbed of bubble-mixed lightweight soil and expandable polystyrene (EPS) combined block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420158965.9U CN203807904U (en) | 2014-04-02 | 2014-04-02 | Lightweight bridgehead roadbed of bubble-mixed lightweight soil and expandable polystyrene (EPS) combined block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203807904U true CN203807904U (en) | 2014-09-03 |
Family
ID=51446685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420158965.9U Expired - Fee Related CN203807904U (en) | 2014-04-02 | 2014-04-02 | Lightweight bridgehead roadbed of bubble-mixed lightweight soil and expandable polystyrene (EPS) combined block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203807904U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806380A (en) * | 2014-02-19 | 2014-05-21 | 江西方兴科技有限公司 | Fog zone inducing lamp installed on side of expressway and installation method thereof |
| CN105862575A (en) * | 2016-05-31 | 2016-08-17 | 中国华电科工集团有限公司 | Structure for abutment roadbed and model selection method for structure |
| CN107119665A (en) * | 2017-06-29 | 2017-09-01 | 中铁第四勘察设计院集团有限公司 | Structure and construction method are repaired in soft clay area railway station platform sedimentation displacement |
| CN107245912A (en) * | 2017-07-03 | 2017-10-13 | 中国铁道科学研究院铁道建筑研究所 | A kind of Foam lightweight soil railway bed structure and engineering method |
| CN110205890A (en) * | 2019-06-20 | 2019-09-06 | 中国五冶集团有限公司 | A kind of underground tunnel upper lightweight EPS road structure and its construction method |
| CN110904740A (en) * | 2019-12-17 | 2020-03-24 | 同济大学 | Roadbed and method for controlling differential settlement of high-speed railway road and bridge transition section |
| CN110904741A (en) * | 2019-12-17 | 2020-03-24 | 同济大学 | Composite structure for controlling uneven settlement of transition section of high-speed railway road bridge |
| CN111705576A (en) * | 2020-07-01 | 2020-09-25 | 北京工业大学 | Steep slope high-filling roadbed structure adopting high-density EPS filler |
| CN114182591A (en) * | 2021-12-21 | 2022-03-15 | 中国科学院武汉岩土力学研究所 | Open caisson type soft soil foundation and soft soil foundation reinforcing method |
| CN114575209A (en) * | 2022-03-31 | 2022-06-03 | 浙江数智交院科技股份有限公司 | Road rigid pile and preloading soft foundation treatment transition structure and construction method |
-
2014
- 2014-04-02 CN CN201420158965.9U patent/CN203807904U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806380A (en) * | 2014-02-19 | 2014-05-21 | 江西方兴科技有限公司 | Fog zone inducing lamp installed on side of expressway and installation method thereof |
| CN103806380B (en) * | 2014-02-19 | 2016-07-06 | 江西方兴科技有限公司 | A kind of fog-zone induced light being installed on highway trackside and installation method thereof |
| CN105862575A (en) * | 2016-05-31 | 2016-08-17 | 中国华电科工集团有限公司 | Structure for abutment roadbed and model selection method for structure |
| CN107119665A (en) * | 2017-06-29 | 2017-09-01 | 中铁第四勘察设计院集团有限公司 | Structure and construction method are repaired in soft clay area railway station platform sedimentation displacement |
| CN107245912A (en) * | 2017-07-03 | 2017-10-13 | 中国铁道科学研究院铁道建筑研究所 | A kind of Foam lightweight soil railway bed structure and engineering method |
| CN107245912B (en) * | 2017-07-03 | 2019-04-30 | 中国铁道科学研究院铁道建筑研究所 | A kind of Foam lightweight soil railway bed structure and engineering method |
| CN110205890A (en) * | 2019-06-20 | 2019-09-06 | 中国五冶集团有限公司 | A kind of underground tunnel upper lightweight EPS road structure and its construction method |
| CN110904740A (en) * | 2019-12-17 | 2020-03-24 | 同济大学 | Roadbed and method for controlling differential settlement of high-speed railway road and bridge transition section |
| CN110904741A (en) * | 2019-12-17 | 2020-03-24 | 同济大学 | Composite structure for controlling uneven settlement of transition section of high-speed railway road bridge |
| CN111705576A (en) * | 2020-07-01 | 2020-09-25 | 北京工业大学 | Steep slope high-filling roadbed structure adopting high-density EPS filler |
| CN114182591A (en) * | 2021-12-21 | 2022-03-15 | 中国科学院武汉岩土力学研究所 | Open caisson type soft soil foundation and soft soil foundation reinforcing method |
| CN114575209A (en) * | 2022-03-31 | 2022-06-03 | 浙江数智交院科技股份有限公司 | Road rigid pile and preloading soft foundation treatment transition structure and construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203807904U (en) | Lightweight bridgehead roadbed of bubble-mixed lightweight soil and expandable polystyrene (EPS) combined block | |
| CN202718084U (en) | Composite foundation with flexible piles and drain boards combined | |
| CN204000469U (en) | A kind of pile formula box road structure | |
| CN104746390B (en) | Foam lightweight concrete railroad bed structure | |
| CN105780618B (en) | A kind of prefabricated board is to stretching vertical no slope embankment and construction method | |
| CN203174453U (en) | Light-mass embankment structure for managing bump at bridge head | |
| CN103334357B (en) | Viaduct road embankment structure with lower pile foundation bearing platform extending in roadbed, and construction method | |
| CN107245912B (en) | A kind of Foam lightweight soil railway bed structure and engineering method | |
| CN206396566U (en) | A kind of U-shaped embankment structure of pile of the anti-ground collapse in karst area | |
| CN210134291U (en) | Broad structure of side of existing passenger dedicated line road bed | |
| CN203393530U (en) | Anti-floating lightweight high-fill embankment structure | |
| CN107724189A (en) | A kind of box road structure of railway engineering thin-walled | |
| CN102995599A (en) | Anti-freeze anti-seepage water diversion treatment method of collapsible loess water-conveyance canal | |
| CN109235159A (en) | A kind of road structure and construction method for helping wide enlarging for runing high-speed railway | |
| CN105332380B (en) | Strut changing structure and method for underground building | |
| CN109750571A (en) | A kind of road landslide emergency and permanent supporting and retaining system integral structure and construction method | |
| JP2015031057A (en) | Pavement structure | |
| CN203334154U (en) | Embankment structure for preventing bearing platform of pile foundation from stretching in roadbed under viaduct | |
| CN103290871B (en) | Guide ditch construction method | |
| CN209307786U (en) | A kind of road structure extended for runing high-speed railway side width | |
| CN207567570U (en) | A kind of Foam lightweight soil railway bed transition section structure | |
| CN105113350A (en) | Pier abutment roadbed structure and construction method | |
| CN203960701U (en) | The relative settlement coordination structure of soft soil roadbed the old and new's subgrade and pavement joining place | |
| CN205637707U (en) | Swimming pool | |
| CN210797245U (en) | Structure is backfilled to bridgehead abutment back of body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20160402 |