CN210134293U - Horizontal lattice type prefabricated assembly segment and high-speed railway foundation assembled by same - Google Patents
Horizontal lattice type prefabricated assembly segment and high-speed railway foundation assembled by same Download PDFInfo
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- CN210134293U CN210134293U CN201920476004.5U CN201920476004U CN210134293U CN 210134293 U CN210134293 U CN 210134293U CN 201920476004 U CN201920476004 U CN 201920476004U CN 210134293 U CN210134293 U CN 210134293U
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Abstract
The utility model discloses a prefabricated segment of assembling of horizontal lattice formula and assemble the high-speed railway road bed that forms by it, high-speed railway foundation includes rigid pile foundation and installs the prefabricated segment of assembling of a plurality of horizontal lattice formulas on rigid pile foundation, and two adjacent prefabricated segments of assembling of horizontal lattice formula are inlayed with the recess through tenon on the terminal surface and are in the same place, and each horizontal lattice formula is prefabricated the segment of assembling and is in through alternating prestressed anchorage cable anchor in the prestressed aperture way, the part that the both sides of roof surpass the bottom plate forms the shoulder of encorbelmenting. The roadbed has the advantages of greatly reduced filling engineering quantity, small foundation reinforcing range, small influence on the surrounding environment, low manufacturing cost and good engineering application prospect.
Description
Technical Field
The utility model belongs to the technical field of railway roadbed engineering and specifically relates to a festival section is assembled in prefabrication of horizontal lattice formula and assembles the high-speed railway road bed that forms thereof.
Background
The high-speed railway is extremely sensitive to the sedimentation deformation of the foundation, and the control on the sedimentation deformation of the foundation in the design reaches the millimeter-scale control standard. The traditional roadbed structure mostly adopts a trapezoidal section form, needs bilateral symmetry to put slopes, but when the roadbed is filled to a great extent, the slope putting range of the traditional trapezoidal filling roadbed is greatly increased, so that the transverse size of the roadbed section is greatly improved, the overlarge self weight of the roadbed body also enables the reinforcing range and the reinforcing depth of the high-speed rail foundation to be increased to a great extent, and the earthwork project amount and the project cost are very high. The common action of the adverse factors seriously limits the application of the roadbed structure in the high-speed rail construction, a large amount of phenomena of 'taking roads by bridges' exist in the actual engineering, and the roadbed occupation ratio in the newly-built high-speed rail line is smaller and smaller.
Therefore, aiming at the characteristics of high-speed railway foundation engineering, a novel high-speed railway foundation supporting structure which can effectively reduce the section size and the structural self-weight of a road-fill foundation, has less land occupation, low manufacturing cost and safe and reliable structure is urgently needed to be developed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a section is assembled in horizontal lattice formula prefabrication for high-speed railway basic simple structure, the cost is lower.
Another object of the utility model is to provide a high-speed railway roadbed that segment section was made is assembled in utilizing above-mentioned horizontal lattice formula prefabrication.
Therefore, the technical scheme of the utility model is as follows:
a horizontal lattice type prefabricated assembly segment comprises a top plate, a bottom plate, an inner supporting plate and two side wall plates which are integrally formed, wherein the two side wall plates are vertically arranged, the top plate and the bottom plate are horizontally arranged, and the left side and the right side of the bottom plate are connected with the bottom edges of the two side wall plates; the width of the top plate is greater than that of the bottom plate, and the top edges of the two side wall plates are connected with the bottom surface of the top plate; the cross section of the inner supporting plate is in a cross shape and is formed by vertically crossing a transverse plate and a vertical plate, the left end and the right end of the transverse plate are respectively connected with the middle parts of the two side wall plates, and the upper end and the lower end of the vertical plate are respectively connected with the middle parts of the top plate and the bottom plate; reinforcing structures are formed at the joints of the inner supporting plate and the top plate, the bottom plate and the two side wall plates and at the joints of the transverse plate and the vertical plate, anchoring grooves are formed at the positions of each connecting node on the front end surface and the rear end surface of the horizontal lattice type prefabricated assembly segment, and prestress pore passages which are run through in the length direction are arranged in the anchoring grooves; the front end face of the inner supporting plate is provided with a tenon, the corresponding position of the rear end face is provided with a groove, and the shape of the tenon is matched with that of the groove.
Preferably, the reinforcing structure is a fillet formed at both sides of the connection position, the fillet extending in the entire length direction.
Preferably, the four edges of the cross-shaped end surface at the front end of the inner supporting plate are provided with the tenons, and the four edges of the cross-shaped end surface at the rear end of the inner supporting plate are provided with the grooves.
In addition, through holes can be formed in the transverse plate and the vertical plate of the inner supporting plate according to needs. The length of the horizontal lattice type prefabricated assembling segments is 3-6 m.
A high-speed railway foundation comprises a rigid pile foundation and a plurality of horizontal lattice type prefabricated assembly sections installed on the rigid pile foundation, wherein two adjacent horizontal lattice type prefabricated assembly sections are embedded together through tenons and grooves on end faces, each horizontal lattice type prefabricated assembly section is anchored through a prestressed anchor cable inserted in a prestressed pore channel, and overhanging road shoulders are formed by parts, exceeding a bottom plate, of two sides of a top plate.
Preferably, the internal cavities of the horizontal lattice type prefabricated assembly segments are filled or partially filled with fillers so as to enhance the overall stability of the roadbed structure.
Preferably, a protective fence, a cable trough and a contact net upright post are arranged on the overhanging road shoulder.
Preferably, an oblique reinforcing rib is arranged at the contact net upright post.
The utility model has the advantages and positive effect as follows:
the high-speed railway foundation structure of the utility model adopts a box-type structure road shoulder overhanging mode, the amount of the roadbed filling engineering is greatly reduced, and the maximum reduction is 0; the foundation reinforcement range is greatly reduced compared with the traditional roadbed structure, the influence on the surrounding environment is small, and the method is suitable for the construction of high-speed railway roadbed engineering under complex working conditions. In addition, this novel roadbed structure accessible cast-in-place and prefabricated two kinds of modes construction of assembling, through interior backup pad and tenon-recess built-in structures, can effectively guarantee box roadbed structure's wholeness and stability. The scheme is used as a novel roadbed structure form of the high-speed railway, has low manufacturing cost and large engineering application prospect, is the key optimization and improvement direction of the traditional road-filling roadbed structure, and has wide application space and popularization and application values in railway engineering construction.
Drawings
Fig. 1 is a schematic sectional structure view of a prefabricated assembly segment of a medium and high speed railway roadbed according to the present invention;
FIG. 2 is a schematic view of the assembly effect of the multi-section prefabricated sections of the present invention;
fig. 3 is the utility model discloses in use the horizontal lattice formula curb box high-speed railway roadbed's that encorbelments section structure schematic diagram of cast-in-place mode construction.
In the figure:
1. box-type structure 1a, top plate 1b, side wall plate
1c, a bottom plate 1d, an inner support plate 2 and an overhanging road shoulder
3. Rigid pile foundation 4, plastering angle 5 and track base plate
6. Protective fence 7, tenon 8 and anchoring groove
9. Prestressed duct
Detailed Description
The structure of the present invention will be described in detail with reference to the accompanying drawings.
The utility model discloses the width that mentions in indicates along the road bed width direction, and length indicates along the railway line direction.
Referring to fig. 1-3, the horizontal lattice type prefabricated assembly segment of the present invention includes a top plate 1a, a bottom plate 1c, an inner supporting plate 1d and two side wall plates 1b, which are integrally formed, wherein the two side wall plates 1b are vertically arranged, the top plate 1a and the bottom plate 1c are horizontally arranged, and the left and right sides of the bottom plate 1c are connected to the bottom edges of the two side wall plates 1 b; the width of the top plate 1a is larger than that of the bottom plate 1c, and the top edges of the two side wall plates 1b are connected with the bottom surface of the top plate 1 a; the cross section of the inner supporting plate 1d is in a cross shape and is formed by vertically crossing a transverse plate and a vertical plate, the intersection line of the transverse plate and the vertical plate is parallel to the line direction, and holes can be formed in the plate surface of the inner supporting plate as required. The left end and the right end of the transverse plate are respectively connected with the middle parts of the two side wall plates 1b, and the upper end and the lower end of the vertical plate are respectively connected with the middle parts of the top plate 1a and the bottom plate 1 c; reinforcing structures are formed at the joints of the inner supporting plate 1d and the top plate 1a, the bottom plate 1c and the two side wall plates 1b and at the joints of the transverse plate and the vertical plate, anchoring grooves 8 are formed at the positions of each connecting node on the front end surface and the rear end surface of the horizontal lattice type prefabricated assembly segment, and prestress pore channels 9 which are through in the length direction are arranged in the anchoring grooves 8; a tenon 7 is formed on the front end face of the inner support plate 1d, a groove (not shown) is formed at the corresponding position of the rear end face, and the shape of the tenon 7 is matched with that of the groove.
The reinforcing structure may be a fillet 4 formed at both sides of the connection position, the fillet extending in the entire length direction. The reinforcing structure may also be other suitable structures.
In the embodiment shown in the drawings, the tenon 7 is provided on each of four sides of the cross-shaped end surface at the front end of the inner support plate 1d, and the groove is provided on each of four sides of the cross-shaped end surface at the rear end of the inner support plate 1 d. The length of the horizontal lattice type prefabricated assembling segments is 3-6 m.
The utility model discloses a high-speed railway base, including rigid pile foundation 3 and install the prefabricated segment of assembling of above-mentioned horizontal lattice formula on rigid pile foundation 3. The rigid pile foundation 3 is in a rigid pile composite foundation structure form, two adjacent horizontal lattice type prefabricated assembled sections are embedded together through tenons and grooves on the end faces, each horizontal lattice type prefabricated assembled section is anchored through a prestressed anchor cable inserted into the prestressed pore channel 9, the parts, exceeding the bottom plate 1c, of the two sides of the top plate 1a form overhanging road shoulders 2, and the maximum overhanging width of the overhanging road shoulders can reach the outer edge of a track base plate. The overhanging road shoulder is used as a high-speed railway shoulder structure and has a carrier of auxiliary structures such as a protective fence, a cable trough and a contact net upright post, and the position of the contact net upright post is provided with an oblique reinforcing rib.
The internal cavities of the horizontal lattice type prefabricated assembly segments can be not filled, filled or partially filled with common fillers and compacted through a small compacting machine so as to enhance the overall stability of the roadbed structure.
The following explains the utility model discloses a high-speed railway roadbed's work progress. The utility model provides a prefabricated section of assembling of horizontal lattice formula can adopt cast-in-place and prefabricated two kinds of modes construction of assembling, when adopting cast-in-place mode construction, roof and interior backup pad are pour and are adopted integral inner formword to support, are divided the segment and pour, and when the prefabrication was assembled, the prefabricated section of pipeline direction along the line, integral hoisting, the length of every section is 3 ~ 6 m.
As shown in figure 1, when the cast-in-place construction is adopted, the construction is carried out in sections according to the requirement of the spacing of the settlement joints, and the length of a single section is generally not more than 10 m. In the cast-in-place process, firstly, reinforcing treatment is carried out on the foundation in the section range of the high-speed railway foundation, and a rigid pile foundation 3 is formed in a rigid pile composite foundation structure form; secondly, erecting a template and binding reinforcing steel bars on the reinforced rigid pile foundation 3, and pouring a bottom plate 1c of the box-type structure; then, binding reinforcing steel bars of vertical supporting plates in a side wall plate 1b and an inner supporting plate 1d of the box-type structure, forming a corner plastering 4 at a node according to design requirements to play a role in reinforcement, then arranging an inner formwork of the inner supporting plate 1d and an outer formwork of the side wall plate 1b, and pouring concrete to the position of a horizontal supporting plate; then, binding the steel bars of the horizontal support plate in the inner support plate 1d, pouring concrete to the bottom of the top plate 1a, arranging an inner template of the inner support plate 1d, erecting an outer template of the cantilever road shoulder 2, and completing the pouring construction of the horizontal lattice type road shoulder cantilever box type high-speed railway roadbed; and finally, carrying out concrete pouring and curing, wherein the grade of the concrete in pouring is not less than C40, and the curing age is not less than 100% of the designed strength. In addition, the inside of the box-type structure can adopt a full filling, half filling or no filling mode of roadbed filling according to design requirements, so that the overall stability of the box-type structure roadbed is enhanced; after the foundation bed construction is completed, the construction of the track base plate 5 is carried out, the track plate and the steel rail are laid after the strength requirement is met, and the edge of the overhanging road shoulder 2 is provided with the protective fence 6.
As shown in figures 2 and 3, the horizontal lattice type road shoulder cantilever box type high-speed railway roadbed constructed in a prefabricated assembly mode is divided into sections along the road base road direction, the length of a single section is not more than 6m, horizontal and vertical supporting plates in an inner supporting plate 1d can be provided with holes according to design requirements, tenon and groove embedding structures are respectively arranged at the joint positions of two adjacent sections, and the weight of the single section is controlled to be not more than 200 t. After prefabrication of the horizontal lattice type road shoulder cantilever box type high-speed railway foundation section is completed, the maintenance age is not less than 100% of the design strength, and then field assembly is carried out. Firstly, reinforcing the foundation in the section range of the high-speed railway foundation, and forming a rigid pile foundation 3 in a rigid pile composite foundation structure form; secondly, hoisting the horizontal lattice type shoulder overhanging box type high-speed railway foundation section to a preset position, and fixedly connecting a bottom plate 1c of the box type structure with a rigid pile foundation 3 in a post-pouring mode; then, other sections are hoisted continuously, and the tenon and groove embedding structures at the joint positions of the adjacent sections are ensured to be mutually occluded; then, inserting a prestressed anchor cable in a prestressed duct 9 in the reserved anchoring groove 8, wherein the inserting operation of the prestressed anchor cable and the positioning and hoisting of the prefabricated segments are carried out simultaneously, and the mutual anchoring and embedding of the adjacent prefabricated segments are ensured; and finally, repeating the process until the horizontal lattice type road shoulder cantilever box type high-speed railway foundation is integrally formed and reaches the designed length. In addition, the interior of the box-type structure after the prefabrication and assembly is finished can adopt a roadbed filling mode of no filling, full filling or half filling according to design requirements, so that the overall stability of the box-type structure roadbed is enhanced; and after the roadbed foundation construction is finished, constructing a track base plate 5, and paving a track plate and a steel rail after the strength requirement is met. Therefore, the on-site assembly construction of the prefabricated assembled horizontal lattice type road shoulder cantilever box type high-speed railway roadbed is completed.
To sum up, the utility model discloses a horizontal lattice formula curb box type high-speed railway foundation of encorbelmenting compares in traditional high-speed railway fill road bed structure, all improved in aspects such as roadbed structural style, construction method, the embedded structure, realized reducing by a wide margin of high-speed railway base treatment range and roadbed filler filling engineering volume, effectively reduced high-speed railway base investigation area, the whole cost of engineering descends obviously, economic nature index and security index are very outstanding, be applicable to interval high-speed railway roadbed, close on the new construction road bed of existing high-speed railway, high-speed railway roadbed engineering such as platform road bed, also accord with the future direction of optimizing the improvement of high-speed railway base engineering of china simultaneously, have higher innovation level and engineering popularization and application value.
Claims (9)
1. The utility model provides a segment is assembled in prefabrication of horizontal lattice formula which characterized in that: comprises a top plate (1a), a bottom plate (1c), an inner supporting plate (1d) and two side wall plates (1b) which are integrally formed, wherein the two side wall plates (1b) are vertically arranged, the top plate (1a) and the bottom plate (1c) are horizontally arranged,
the left side and the right side of the bottom plate (1c) are connected with the bottom edges of the two side wall plates (1 b);
the width of the top plate (1a) is larger than that of the bottom plate (1c), and the top edges of the two side wall plates (1b) are connected with the bottom surface of the top plate (1 a);
the cross section of the inner supporting plate (1d) is cross-shaped and is formed by vertically crossing a transverse plate and a vertical plate, the left end and the right end of the transverse plate are respectively connected with the middle parts of the two side wall plates (1b), and the upper end and the lower end of the vertical plate are respectively connected with the middle parts of the top plate (1a) and the bottom plate (1 c);
reinforcing structures are formed at the joints of the inner supporting plate (1d) and the top plate (1a), the bottom plate (1c) and the two side wall plates (1b) and the joints of the transverse plate and the vertical plate, anchoring grooves (8) are arranged at the positions of each connecting node on the front end surface and the rear end surface of the horizontal lattice type prefabricated assembly segment, and prestress pore channels (9) which are communicated in the length direction are arranged in the anchoring grooves (8);
a tenon (7) is formed on the front end face of the inner supporting plate (1d), a groove is formed at the corresponding position of the rear end face, and the shape of the tenon (7) is matched with that of the groove.
2. The horizontally-lattice prefabricated construction section of claim 1, wherein: the reinforcing structure is a fillet (4) formed on two sides of the connecting position, and the fillet extends along the whole length direction.
3. The horizontally-lattice prefabricated construction section of claim 1, wherein: the four edges of the cross end face at the front end of the inner supporting plate (1d) are provided with the tenons, and the four edges of the cross end face at the rear end of the inner supporting plate (1d) are provided with the grooves.
4. The horizontally-lattice prefabricated construction section of claim 1, wherein: through holes are formed in the transverse plate and the vertical plate of the inner supporting plate (1 d).
5. The horizontally-lattice precast segment recited in any one of claims 1-4, wherein: the length of each horizontal lattice type prefabricated assembly segment is 3-6 m.
6. A high-speed railway road bed which is characterized in that: the horizontal lattice type prefabricated assembly section comprises a rigid pile foundation (3) and a plurality of horizontal lattice type prefabricated assembly sections of claim 5, wherein the plurality of horizontal lattice type prefabricated assembly sections are installed on the rigid pile foundation (3), two adjacent horizontal lattice type prefabricated assembly sections are embedded together through tenons and grooves on end faces, each horizontal lattice type prefabricated assembly section is anchored through a prestressed anchor cable inserted into the prestressed pore channel (9), and overhanging road shoulders (2) are formed by parts, exceeding the bottom plate (1c), of the two sides of the top plate (1 a).
7. The high-speed rail subgrade according to claim 6, wherein: the internal cavity of the horizontal lattice type prefabricated assembly segment is filled or partially filled with a filler so as to enhance the overall stability of the roadbed structure.
8. The high-speed railway subgrade according to claim 7, characterized in that: a protective fence (6), a cable trough and a contact net upright post are arranged on the overhanging road shoulder (2).
9. The high-speed rail subgrade according to claim 8, wherein: and oblique reinforcing ribs are arranged at the contact net upright posts.
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| CN201920476004.5U CN210134293U (en) | 2019-04-09 | 2019-04-09 | Horizontal lattice type prefabricated assembly segment and high-speed railway foundation assembled by same |
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| CN201920476004.5U CN210134293U (en) | 2019-04-09 | 2019-04-09 | Horizontal lattice type prefabricated assembly segment and high-speed railway foundation assembled by same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080043A (en) * | 2019-04-09 | 2019-08-02 | 中国铁路设计集团有限公司 | A kind of horizontal lattice precast assembly segment and its assembled high-speed rail roadbed |
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2019
- 2019-04-09 CN CN201920476004.5U patent/CN210134293U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080043A (en) * | 2019-04-09 | 2019-08-02 | 中国铁路设计集团有限公司 | A kind of horizontal lattice precast assembly segment and its assembled high-speed rail roadbed |
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