CN202227214U

CN202227214U - Deep soft soil foundation embankment structure of high-speed railway

Info

Publication number: CN202227214U
Application number: CN2011203204873U
Authority: CN
Inventors: 姚裕春; 李安洪; 庞应刚; 曾永红; 周成; 李楚根; 叶世斌
Original assignee: China Railway Eryuan Engineering Group Co Ltd CREEC
Current assignee: China Railway Eryuan Engineering Group Co Ltd CREEC
Priority date: 2011-08-30
Filing date: 2011-08-30
Publication date: 2012-05-23
Anticipated expiration: 2021-08-30

Abstract

The utility model relates to a deep soft soil foundation embankment structure of a high-speed railway, which can effectively solve the strength and the deformation problems of the high-speed railway constructed on the deep soft soil foundation embankment, and includes prestressed pipe piles (4) penetrating from a soft soil layer (1) to a certain depth of a rock bearing hard layer (2) and longitudinally and transversely arranged at an interval along the foundation, a reinforced cushion layer (6) laid above the prestressed pipe piles (4), a concrete cushion layer (7) laid above the reinforced cushion layer (6), cantilever arm or support arm retaining walls (5) arranged on the two transverse sides of the foundation and on the concrete cushion layer (7), a soil embankment (3) filled and constructed between the deep soft soil foundation and the retaining walls (5), and sand and cobble inverse filter layers (8) arranged between the inner sides of the retaining walls (5) and the soil embankment (3).

Description

High-speed railway deep soft soil foundation embankment structure

Technical field

The utility model relates to embankment structures such as railway, highway, the piece of smooth land, particularly high-speed railway deep soft soil foundation embankment structure.

Background technology

Deep soft soil foundation extensively distributes in China's Coastal Areas; Coastal area land resources is very rare and precious simultaneously, and the demand ten minutes that coastal Deep Thick Soft Ground Area is built high-speed railway is huge, therefore; A kind of embankment structure of building high-speed railway in the coastal area of active demand; Intensity and deformation requirements that high-speed railway is higher had both been guaranteed, and had saved the area again and invest also have the characteristics of the simple and compliance with environmental protection requirements of construction technology.

The utility model content

The utility model technical problem to be solved provides a kind of high-speed railway deep soft soil foundation embankment structure, can effectively solve and build high-speed railway embankment intensity and problem on deformation on the deep soft soil foundation.

It is following that the utility model solves the technical scheme that its technical problem adopted:

The high-speed railway deep soft soil foundation embankment of the utility model structure is characterized in that it comprises: pass the pile for prestressed pipe that soft layer to ground is held power hard formation certain depth, along roadbed vertically, be horizontally arranged at interval; Reinforcement cushion is layed in the pile for prestressed pipe top; Concrete cushion is layed in the reinforcement cushion top; Cantilevered or hold up arm-type barricade places on roadbed both lateral sides and the concrete cushion; The soil property embankment fills on the deep soft soil foundation and between the barricade; The sandy gravel loaded filter is arranged between barricade inboard and the soil property embankment.

The beneficial effect of the utility model is; Have that globality is strong, the characteristics of good stability; Solved effectively and built high-speed railway embankment intensity and problem on deformation on the deep soft soil foundation, adopt embankment put the slope fill can save the area with the ground stabilization measure, can reduce the investment more than 10%; Environmental protection is good, and construction technology is simple.

Description of drawings

This manual comprises following three width of cloth accompanying drawings:

Fig. 1 is the utility model high-speed railway deep soft soil foundation embankment structure cross-sectional configuration sketch map;

Fig. 2 is the utility model high-speed railway deep soft soil foundation embankment structure reinforcement cushion structural representation;

Fig. 3 is the utility model high-speed railway deep soft soil foundation embankment structure reinforcement cushion top concrete cushion structural representation.

Member shown in the figure, position and pairing mark: soft layer 1, ground are held power hard formation 2, soil property embankment 3; Pile for prestressed pipe 4, pile cover 401; Barricade 5; Reinforcement cushion 6, first floor hardcore bed 601, second layer hardcore bed 602, the 3rd layer of hardcore bed 603, first floor GSZ 611, second layer GSZ 612; Concrete cushion 7; Sandy gravel loaded filter 8.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

With reference to Fig. 1, the high-speed railway deep soft soil foundation embankment of the utility model structure, it comprises: pass the pile for prestressed pipe 4 that soft layer 1 to ground is held power hard formation 2 certain depths, along roadbed vertically, be horizontally arranged at interval, guarantee the intensity and the distortion of embankment structure; Reinforcement cushion 6 is layed in pile for prestressed pipe 4 tops, makes pile for prestressed pipe 4 stressed even; Concrete cushion 7 is layed in reinforcement cushion 6 tops, to increase cantilevered or to hold up arm-type barricade 5 underlying strengths; Cantilevered or hold up arm-type barricade 5 places on roadbed both lateral sides and the concrete cushion 7, carries out embankment and receives the slope and reduce railway land and ground stabilization measure; Soil property embankment 3 fills on the deep soft soil foundation and between the barricade 5; Sandy gravel loaded filter 8 is arranged between barricade 5 inboards and the soil property embankment 3, to discharge the infiltration of going in the embankment.Have that globality is strong, the characteristics of good stability; Solved effectively and built high-speed railway embankment intensity and problem on deformation on the deep soft soil foundation, adopt embankment put the slope fill can save the area with the ground stabilization measure, can reduce the investment more than 10%; Environmental protection is good, and construction technology is simple.

With reference to Fig. 1, be arranged at cantilevered or hold up the pile for prestressed pipe 4 under the arm-type barricade 5, its spacing is according to cantilevered or hold up 5 inspections of arm-type barricade to calculate to require to confirm, stretches into down ground for sleeping in and holds power hard formation 2 degree of depth and need guarantee the top cantilevered or hold up stablizing of arm-type barricade 5.

With reference to Fig. 3 and Fig. 4, the top of said pile for prestressed pipe 4 is consolidated with pile cover 401, and the cross section of pile cover 401 is general rounded or square, and its diameter or the length of side are generally 1.0～1.2m, highly are 0.4～0.6m.The setting of pile cover 401 can strengthen pile for prestressed pipe 4 and effectively hold the power area, and reinforcement cushion 6 places pile for prestressed pipe pile cover top, makes pile for prestressed pipe stressed evenly, reduces soil property embankment 3 differential settlements.

With reference to Fig. 2; Said reinforcement cushion 6 is usually by first floor hardcore bed 601, first floor GSZ 611, second layer hardcore bed 602, second layer GSZ 612, the 3rd layer of hardcore bed 603 of laying successively from bottom to up, and the thickness of first floor hardcore bed 601, second layer hardcore bed 602 and the 3rd layer of hardcore bed 603 is generally 0.2m.

With reference to Fig. 3, said concrete cushion 7 is laid on the reinforcement cushion 6, and its thickness is generally 0.1～0.2m.With reference to Fig. 1, concrete cushion 7 outsides are extended cantilevered or are held up the outer width of arm-type barricade 5 toe of wall plates to be not less than 0.5m, and the width of reinforcement cushion 6 is then consistent with the width of concrete cushion 7.With reference to Fig. 1, said cantilevered or hold up the toe of wall buried depth of arm-type barricade 5 to be not less than 1.0m, the thickness of said sandy gravel loaded filter 8 is generally 0.3m.Said cantilevered or hold up arm-type barricade 5 along the every interval 15～20m of embankment bearing of trend one place, shrinkage joint to be set, shrinkage joint adopt the filling of pitch plank.

Some principles of the above the utility model high-speed railway deep soft soil foundation embankment structure that just explains through diagrams; Be not be to the utility model be confined to shown in described concrete structure and the scope of application in; So every the modify and equivalent that might be utilized all belongs to the claim that the utility model is applied for.

Claims

1. high-speed railway deep soft soil foundation embankment structure is characterized in that it comprises: pass the pile for prestressed pipe (4) that soft layer (1) to ground is held power hard formation (2) certain depth, along roadbed vertically, be horizontally arranged at interval; Reinforcement cushion (6) is layed in pile for prestressed pipe (4) top; Concrete cushion (7) is layed in reinforcement cushion (6) top; Cantilevered or hold up arm-type barricade (5) places on roadbed both lateral sides and the concrete cushion (7); Soil property embankment (3) fills on the deep soft soil foundation and between the barricade (5); Sandy gravel loaded filter (8) is arranged between barricade (5) inboard and the soil property embankment (3).

2. high-speed railway deep soft soil foundation embankment structure as claimed in claim 1; It is characterized in that: the top of said pile for prestressed pipe (4) is consolidated with pile cover (401); The cross section of pile cover (401) is rounded or square, and its diameter or the length of side are 1.0～1.2m, highly is 0.4～0.6m.

3. high-speed railway deep soft soil foundation embankment structure as claimed in claim 1; It is characterized in that: said reinforcement cushion (6) is by first floor hardcore bed (601), first floor GSZ (611), second layer hardcore bed (602), second layer GSZ (612), the 3rd layer of hardcore bed (603) laid successively from bottom to up, and the thickness of first floor hardcore bed (601), second layer hardcore bed (602) and the 3rd layer of hardcore bed (603) is 0.2m.

4. high-speed railway deep soft soil foundation embankment structure as claimed in claim 1, it is characterized in that: said concrete cushion (7) thickness is 0.1～0.2m, its outside is extended cantilevered or is held up the outer width of arm-type barricade (5) toe of wall plate to be not less than 0.5m.

5. high-speed railway deep soft soil foundation embankment structure as claimed in claim 4, it is characterized in that: the width of said reinforcement cushion (6) is consistent with the width of concrete cushion (7).

6. high-speed railway deep soft soil foundation embankment structure as claimed in claim 1, it is characterized in that: the thickness of said sandy gravel loaded filter (8) is 0.3m.

7. high-speed railway deep soft soil foundation embankment as claimed in claim 1 structure is characterized in that: said cantilevered or hold up arm-type barricade (5) along the every interval 15～20m of embankment bearing of trend one place, shrinkage joint to be set, the filling of pitch plank is adopted at the shrinkage joint.

8. high-speed railway deep soft soil foundation embankment as claimed in claim 7 structure is characterized in that: said cantilevered or hold up the toe of wall buried depth of arm-type barricade (5) to be not less than 1.0m.