CN211057512U - Traffic line with CFG pile and reinforced concrete box type roadbed structure - Google Patents
Traffic line with CFG pile and reinforced concrete box type roadbed structure Download PDFInfo
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- CN211057512U CN211057512U CN201921268363.8U CN201921268363U CN211057512U CN 211057512 U CN211057512 U CN 211057512U CN 201921268363 U CN201921268363 U CN 201921268363U CN 211057512 U CN211057512 U CN 211057512U
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Abstract
The utility model discloses a traffic line with CFG pile and reinforced concrete box roadbed structure, the traffic line includes the foundation reinforced structure and at least two roadbed structures that set up side by side along the line, at least two roadbed structures set up on the foundation reinforced structure; the foundation reinforcing structure comprises CFG piles extending into the foundation and arranged in the foundation; the roadbed structure is a reinforced concrete structure; the roadbed structure comprises a supporting plate for supporting load, a bottom plate connected with the foundation reinforcing structure, and at least two side walls for connecting the supporting plate and the bottom plate. The foundation stabilization structure effectively reduces the settlement deformation of the foundation and ensures the requirements of high-speed railway stability and comfort. The reinforced concrete roadbed structure does not need roadbed filling, and has good stability and small occupied area.
Description
Technical Field
The utility model relates to a geotechnical engineering field, in particular to traffic lines with CFG stake and reinforced concrete road base structure.
Background
Taking railway transportation as an example, the mode of arranging the trapezoid roadbed on the foundation is adopted at present to ensure that the requirements of stability and comfort of the high-speed railway are met, the trapezoid roadbed occupies a large area, and the requirements on the quality and quantity of the filler are higher. For areas with poor foundation conditions, such as plain areas, due to the fact that the filler is deficient, the foundation is prone to settlement and deformation, the trapezoidal roadbed is high in construction difficulty and high in filler transportation cost, and requirements are difficult to meet.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the embodiment of the utility model provides a traffic lines with box roadbed structure of CFG stake and reinforced concrete.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
The embodiment of the utility model provides a traffic line with CFG stake and reinforced concrete box roadbed structure, the traffic line includes ground reinforced structure and at least two roadbed structure that the line set up side by side along, at least two roadbed structure set up on the ground reinforced structure;
The foundation reinforcing structure comprises CFG piles extending into the foundation and arranged in the foundation;
The roadbed structure is a reinforced concrete structure;
The roadbed structure comprises a supporting plate for supporting load, a bottom plate connected with the foundation reinforcing structure, and at least two side walls for connecting the supporting plate and the bottom plate; the bottom plate is located on the CFG pile.
In the above scheme, the foundation stabilization structure further includes a cushion layer, and the cushion layer is located between the CFG pile and the bottom plate.
In the above scheme, the cushion layer comprises a filler layer and at least one layer of geogrid, the bottom plate is arranged on the filler layer, and the at least one layer of geogrid is arranged in the filler layer.
In the above scheme, the support plate includes a top plate and wing plates, the top plate is disposed on at least two of the side walls, and the wing plates extend outward from the top plate.
In the above scheme, the roadbed structure further comprises a plurality of armpit portions, wherein one part of the armpit portions are connected with the supporting plate and the side wall, and the other part of the armpit portions are connected with the bottom plate and the side wall.
In the above scheme, the transportation line further comprises a contact net, the contact net comprises a foundation and a stand column, the stand column is installed on the foundation, and the foundation is installed on the wing plate.
In the above scheme, the contact net still includes pre-buried crab-bolt and the first connecting plate in the pterygoid lamina, crab-bolt one end is installed on the first connecting plate, and the other end is worn to locate the basis.
In the scheme, the contact network further comprises a nut and a second connecting plate pre-embedded in the foundation, wherein the second connecting plate is provided with mounting holes corresponding to the anchor bolts one by one, the anchor bolts penetrate through the mounting holes, and the nut is sleeved outside the anchor bolts; the upright post is connected with the second connecting plate.
In the above scheme, the contact net further comprises an anchoring steel bar embedded in the wing plate, the anchoring steel bar is arranged on the first connecting plate, and the anchoring steel bar is connected with the steel bar in the wing plate and the steel bar in the foundation simultaneously.
In the scheme, a settlement joint is arranged between every two adjacent roadbed structures.
The utility model provides a traffic lines with box roadbed structure of CFG stake and reinforced concrete, ground reinforced structure have effectively reduced the ground and have subsided the deformation, and wherein, CFG stake cost is lower, when can ensure high-speed railway stationarity and travelling comfort requirement, reduces engineering cost. The reinforced concrete box type roadbed structure does not need roadbed filling, and has good stability and small occupied area. Box roadbed structure meets through bottom plate and ground reinforced structure, has to widen the demand, or when unable expansion with the ground reinforcing structure area of bottom plate contact, the load width that box roadbed structure supported is adjusted to the width that the accessible increased the backup pad, has reduced area, has cancelled traditional roadbed filler, has effectively reduced engineering cost.
Drawings
FIG. 1 is a schematic cross-sectional view of an alternative structure of a traffic line in an embodiment of the present invention;
FIG. 2 is a schematic longitudinal layout of the traffic lines of FIG. 1;
Fig. 3 is a schematic plan view of the box-type roadbed structure and the CFG pile foundation reinforcing structure in the embodiment of the present invention;
Fig. 4 is a schematic cross-sectional view of the box-type roadbed structure when being connected with a contact net in the embodiment of the utility model;
Fig. 5 is a partial schematic view of the connection between the catenary and the wing plate of fig. 4, without the anchoring bars;
Fig. 6 shows a schematic representation of reinforcement in the foundation of the structure of fig. 5.
Reference numerals: a roadbed structure 100; a support plate 110; a top plate 111; a wing plate 112; a steel bar 1121 of the wing plate; a side wall 120; a base plate 130; haunch 140; a settlement joint 150; a catenary 160; the upright 161; a base 162; foundation rebar 1621; a first connection plate 163; an anchor bolt 164; a nut 165; second connecting plate 166; anchor bars 167; a foundation reinforcement structure 200; a CFG pile 210; a cushion layer 220; a filler layer 221; geogrid 222.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, belong to the scope of protection of the invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientation or positional relationship shown in fig. 1. "longitudinal" to the direction of line extension and "transverse" to the horizontal, perpendicular to the longitudinal direction.
The embodiment of the utility model provides a traffic line with CFG stake and reinforced concrete box roadbed structure, the traffic line includes ground reinforced structure 200 and at least two roadbed structures 100 that set up side by side along the route, at least two roadbed structures 100 set up on ground reinforced structure 200; the roadbed structure 100 is a reinforced concrete structure; the foundation stabilization structure 200 includes CFG piles 210 provided to extend into the foundation; the roadbed structure 100 includes a support plate 110 supporting a load, a bottom plate 130 connected to the foundation reinforcing structure 200, and at least two side walls 120 connecting the support plate 110 and the bottom plate 130, and the bottom plate 130 is seated on the CFG piles 210.
CFG, an abbreviation of Cement Fly-ash Gravel, CFG pile 210 refers to a Cement Fly ash Gravel pile, a high-bonding-strength pile formed by mixing Cement, Fly ash, Gravel, stone chips or sand with water. Without limitation, as shown in fig. 1 to 4, the CFG piles 210 protrude into the foundation to increase the strength of the foundation and reduce foundation settlement. A plurality of CFG piles 210 arranged in a rectangular array are provided in the foundation. The designed pile diameter of the CFG pile 210 is 0.5m, the transverse pile spacing H4 is 2.2m, the longitudinal pile spacing H5 is 2.0m, and the designed pile length H6 is 18 m. The concrete parameters of pile length, pile diameter, pile spacing and the like can be adjusted according to the foundation conditions.
For pile raft structure (also indicate the deep foundation of constituteing by the pile cap of stake and connection pile bolck), current ground reinforced structure such as reinforced concrete pile sheet structure (also indicate the combination pile body that forms behind the pile sinking by reinforced concrete sheet pile component), the embodiment of the utility model provides an adopt CFG stake carry out reinforcement treatment to the ground, raw materials cost is lower, and the construction degree of difficulty is littleer, can subside deformation, ensure high speed railway stationarity and travelling comfort and require on the basis at effective control ground, reduce engineering cost.
The base plate 130 is disposed on the foundation-reinforcing structure 200, and the base plate 130 and the side wall 120 support the support plate 110. The size of the supporting plate 110 can be flexibly set according to the requirements of the number of lines, the width of the lines and the like. The road base surface for supporting the load can be widened only by changing the size of the supporting plate 110, so that the method is flexible and controllable, the requirement on the filler is reduced, and the utilization rate of land resources is improved. And, reinforced concrete structure's road bed wholeness is good, need not the filler, and backup pad 110 intensity is high, and construction convenience, quality are controllable, and the environmental protection is pleasing to the eye, and has reduced later stage maintenance cost, construction and maintenance cost.
Specifically, as shown in fig. 1 and 4, the roadbed structure 100 is a reinforced concrete box-type structure, the width of the supporting plate 110 is greater than that of the bottom plate 130, and the area of the supporting plate 110 is greater than that of the bottom plate 130, so that the bottom plate 130 with a smaller floor area can provide a larger roadbed surface. The hollow area C defined between the side walls 120, the bottom plate 130 and the support plate 110 may be free of filler, further reducing the need for filler.
Further, the support plate 110 includes a top plate 111 and wings 112, the top plate 111 being disposed on the at least two side walls 120, and the wings 112 being disposed to extend outward from the top plate 111.
As shown in fig. 1 and 4, when a wider roadbed is required, the size of the wing plate 112 can be changed, so that the size requirement and the reinforcement requirement of the bottom plate 130 contacting with the foundation reinforcement structure 200 are reduced, and the widening flexibility of the roadbed structure 100 is further facilitated.
Without limitation, taking fig. 1 as an example, the width H1 of the supporting plate 110 of the box-type roadbed structure 100 can be designed to be 12.6m, the line spacing H2 can be designed to be 5.0m, the width H3 of the bottom plate 130 can be designed to be 9.0m, the thickness of the top plate 111 can be designed to be 0.5m, the thickness of the side wall 120 can be designed to be 0.6m, the thickness of the bottom plate 130 can be designed to be 0.9m, and the center distance between the side walls 120 on both sides can be designed to be 5.5 m.
In some embodiments of the present invention, the foundation stabilization structure 200 further includes a cushion layer 220, and the cushion layer 220 is located between the CFG pile 210 and the bottom plate 130. The roadbed structure 100 is arranged on the CFG piles 210 through the cushion layers 220, so that rigid connection between the roadbed structure 100 and the CFG piles 210 is avoided, the improvement of the seismic performance of the roadbed structure 100 is facilitated, and the roadbed structure has stronger adaptability in high seismic intensity areas.
Further, the underlayment 220 includes a filler layer 221 and at least one geogrid 222, the base plate 130 being disposed on the filler layer 221, and the at least one geogrid 222 being disposed within the filler layer 221. Geogrid 222 can increase the pressure spread angle, improve the bearing capacity of the foundation, and reduce settlement. Without limitation, as shown in fig. 1 and 2, two layers of geogrids 222 are sandwiched and laid in the cushion layer 220, the geogrids 222 are bidirectional warp-knitted polyester geogrids 222, namely GGR/PET/BK100-100, the ultimate tensile strength is not less than 100kN/m, when the geogrids 222 are laid, the two ends are folded back by not less than 2.50m, and the elongation of the rib material is not more than 10%. The upper portion of the underlayment 220 is then leveled to facilitate construction of the box-type roadbed structure 100.
The appropriate filler layer 221 may be selected according to the foundation conditions. The filler layer 221 includes, without limitation, a crushed stone layer and a medium coarse sand layer. For example, after the CFG pile 210 is constructed and qualified, the excess pile length at the pile top is cut off, and a cushion layer 220 with a thickness of 0.6m is laid on the pile top, wherein the cushion layer 220 may be composed of a gravel layer with a thickness of 0.4m and a medium-coarse sand layer with a thickness of 0.2m, and the grain size is not greater than 30 mm.
Further, the roadbed structure 100 further comprises a plurality of armoring portions 140, wherein one part of the armoring portions 140 is connected with the top plate 111 and the side wall 120, and the other part of the armoring portions 140 is connected with the support plate 110 and the side wall 120. As shown in fig. 1 and 4, the armpit 140 prevents local stress concentration, effectively enhances the coupling strength between the support plate 110 and the side wall 120 and between the bottom plate 130 and the side wall 120, and improves the overall strength of the roadbed structure 100.
further, a settlement joint 150 is arranged between two adjacent roadbed structures 100, preferably, the settlement joint 150 is located in the middle of two CFG piles 210, the roadbed structure 100 of the embodiment of the invention can be manufactured in a cast-in-place or prefabricated mode, the size of the length and the like of the roadbed structure 100 is controlled by the corresponding size of a track located on the supporting plate 110, for example, 9.92m can be adopted, the width H7 of the settlement joint 150 between the roadbed structures 100 is generally 20mm, water is arranged in the settlement joint 150, the bottom plate 130 is arranged on the cushion layer 220, the bottom plate 130 and the top plate 111 are respectively haunched, the design of the haunch part 140 of the top plate 111 adopts 0.3m × 0.9m, the design of the haunch part 140 of the bottom plate 130 adopts 0.5m × 0.5m, the arrangement of the reinforcing steel bars in the reinforced concrete box-type roadbed structure 100 can meet the requirements of bearing capacity, stability and durability, and the requirements of the diameter, the length of the.
The implementation procedure of the reinforced concrete box-type roadbed structure 100 can adopt the following steps. Firstly, pouring reinforced concrete of a bottom plate 130, reserving stressed steel bars at corresponding positions of each side wall 120, wherein the reserved length of the stressed steel bars is not less than 1.5m, and the requirements of steel bar anchoring and connection are met; before the concrete of the bottom plate 130 is initially set, constructing the reinforced concrete of the side wall 120, extending the stressed steel bars of the reinforced concrete out of the top by 0.5-1.0 m, and meeting the requirements of steel bar anchoring and connection; after the bottom plate 130 and the side wall 120 reach the designed strength, the supporting plate 110 is constructed to reinforce the concrete and is anchored with the stress reinforcing steel bars which are reserved and extended out of the side wall 120.
The utility model discloses when the traffic route is applied to the railway, especially high-speed railway, still need set up contact net 160 apart from certain interval department of track usually, contact net 160 is used for supplying power for the train. Specifically, the transportation line further comprises a contact net 160, the contact net 160 comprises a base 162 and a column 161, the column 161 is installed on the base 162, and the base 162 is installed on the wing plate 112. The contact net 160 is directly arranged on the supporting plate 110, and does not need to contact with the foundation, so that the reliability of connection between the contact net 160 and the roadbed structure 100 is improved. Typically, the foundation 162 is a rigid structure, and the installation of the rigid structure foundation 162 on the roadbed structure 100 further improves the integrity of the catenary 160 and the roadbed structure 100.
Further, the contact net 160 further includes an anchor bolt 164 and a first connecting plate 163 embedded in the wing plate 112, one end of the anchor bolt 164 is installed on the first connecting plate 163, and the other end of the anchor bolt passes through the foundation 162. As shown in fig. 5 and 6, the first connecting plate 163 is embedded in the support plate 110 in advance, one end of the anchor bolt 154 is positioned in the wing plate 112 of the support plate 110, and the other end thereof is inserted through the first connecting plate 163 and the foundation 162 in this order. The arrangement mode improves the integrity of the contact net 160 and the roadbed structure 100 and ensures the effective connection of the contact net 160 and the roadbed structure 100, thereby realizing the stable power supply for high-speed operation trains and ensuring the high smoothness of railway lines.
Further, the contact network 160 further comprises a nut 165 and a second connecting plate 166 pre-embedded in the foundation 162, the second connecting plate 166 is provided with mounting holes corresponding to the anchor bolts 164 one to one, the anchor bolts 164 penetrate through the mounting holes, and the nut 165 is sleeved outside the anchor bolts 164; the post 161 is connected to a second web 166. The anchor bolt 164 penetrates through the mounting hole, and the nut 165 is sleeved outside the anchor bolt 164; the post 161 is connected to a second web 166. The second connector board 166 further adds to the integrity of the catenary 160 to the roadbed structure 100. As shown in fig. 5 and 6, after the anchor bolt 164 is inserted into the foundation 162, it is exposed outside the foundation 162 so as to be mounted with the nut 165, thereby further fixing the contact net 160 on the support plate 110, and further improving the safety and reliability of the connection between the contact net 160 and the roadbed structure 100. The number of the anchor bolts 164 and the nuts 165 is plural, and plural means two or more.
In some embodiments of the present invention, the contact net 160 further includes an anchoring bar 167 embedded in the wing plate 112, the anchoring bar 167 is disposed on the first connecting plate 163, and the anchoring bar 167 is connected to the reinforcing bar 1121 in the wing plate 112 and the reinforcing bar 1621 in the foundation 162.
The rebar 1121 in the wing 112 is used to increase the strength of the wing 112 and the rebar 1621 in the foundation 162 is used to increase the strength of the foundation 162. The anchoring bars 167 not only increase the strength of the wings 112 in the support plate 110, but also further increase the connection between the catenary 160 and the support plate 110. Further, anchoring bars 167 are coupled by lashing to both the bars 1121 in the wings 112 and the bars 1621 in the foundation 162.
Further, as shown in fig. 6, rebar 1621 within foundation 162 extends inwardly of wings 112. This arrangement of rebar 1621 within foundation 162 can also further improve the integrity of catenary 160 and subgrade structure 100.
Features disclosed in several of the product embodiments provided in the present application may be combined in any combination to yield new product embodiments without conflict.
Other structures and operations of the foundation reinforcement structure 200, the roadbed structure 100, the contact net 160, the traffic lines, etc. according to the embodiments of the present invention are understood and easily implemented by those skilled in the art, and thus will not be described in detail.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (10)
1. A traffic line with CFG piles and reinforced concrete box-type roadbed structures is characterized by comprising a foundation reinforcing structure and at least two roadbed structures arranged in parallel along the line, wherein the at least two roadbed structures are arranged on the foundation reinforcing structure;
The foundation reinforcing structure comprises CFG piles extending into the foundation and arranged in the foundation;
The roadbed structure is a reinforced concrete structure;
The roadbed structure comprises a supporting plate for supporting load, a bottom plate connected with the foundation reinforcing structure, and at least two side walls for connecting the supporting plate and the bottom plate; the bottom plate is located on the CFG pile.
2. The transportation line of claim 1, wherein the foundation stabilization structure further comprises a cushion layer positioned between the CFG piles and the floor.
3. The transportation line of claim 2 wherein the underlayment comprises a filler layer and at least one layer of geogrid, the bottom plate being disposed on the filler layer, the at least one layer of geogrid being disposed within the filler layer.
4. The transportation circuit of claim 1 wherein said support plate includes a top plate disposed on at least two of said side walls and wings extending outwardly from said top plate.
5. The transportation circuitry of claim 1, wherein said roadbed structure further comprises a plurality of haunches, wherein a portion of said haunches connect said support plates and said side walls, and another portion of said haunches connect said base plates and said side walls.
6. The transit line of claim 4, further comprising a catenary, the catenary including a foundation and a post, the post mounted on the foundation, the foundation mounted on the strake.
7. The transportation line of claim 6, wherein the contact system further comprises an anchor bolt and a first connecting plate which are embedded in the wing plates, one end of the anchor bolt is installed on the first connecting plate, and the other end of the anchor bolt penetrates through the foundation.
8. The transportation line according to claim 7, wherein the contact network further comprises a nut and a second connecting plate pre-embedded in the foundation, the second connecting plate is provided with mounting holes corresponding to the anchor bolts one to one, the anchor bolts penetrate through the mounting holes, and the nut is sleeved outside the anchor bolts; the upright post is connected with the second connecting plate.
9. The transportation line of claim 7, wherein the catenary further comprises anchoring bars pre-embedded in the wing plates, the anchoring bars are arranged on the first connecting plate, and the anchoring bars are connected with the bars in the wing plates and the bars in the foundation at the same time.
10. The transportation line of claim 1, wherein a settlement joint is provided between two adjacent roadbed structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921268363.8U CN211057512U (en) | 2019-08-06 | 2019-08-06 | Traffic line with CFG pile and reinforced concrete box type roadbed structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921268363.8U CN211057512U (en) | 2019-08-06 | 2019-08-06 | Traffic line with CFG pile and reinforced concrete box type roadbed structure |
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| CN211057512U true CN211057512U (en) | 2020-07-21 |
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| CN201921268363.8U Active CN211057512U (en) | 2019-08-06 | 2019-08-06 | Traffic line with CFG pile and reinforced concrete box type roadbed structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468631A (en) * | 2019-08-06 | 2019-11-19 | 中铁第四勘察设计院集团有限公司 | Traffic route with CFG He the box road structure of armored concrete |
| CN116949871A (en) * | 2023-07-31 | 2023-10-27 | 河北建筑工程学院 | Vibration isolation box type roadbed structure and construction method thereof |
-
2019
- 2019-08-06 CN CN201921268363.8U patent/CN211057512U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468631A (en) * | 2019-08-06 | 2019-11-19 | 中铁第四勘察设计院集团有限公司 | Traffic route with CFG He the box road structure of armored concrete |
| CN116949871A (en) * | 2023-07-31 | 2023-10-27 | 河北建筑工程学院 | Vibration isolation box type roadbed structure and construction method thereof |
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