CN212742547U - Foundation ditch road bed backfill structure - Google Patents
Foundation ditch road bed backfill structure Download PDFInfo
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- CN212742547U CN212742547U CN202021577074.9U CN202021577074U CN212742547U CN 212742547 U CN212742547 U CN 212742547U CN 202021577074 U CN202021577074 U CN 202021577074U CN 212742547 U CN212742547 U CN 212742547U
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- foundation pit
- foundation
- steel sheet
- concrete
- foundation ditch
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 66
- 239000010959 steel Substances 0.000 claims abstract description 66
- 238000000926 separation method Methods 0.000 claims description 18
- 230000002787 reinforcement Effects 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 230000008595 infiltration Effects 0.000 abstract description 2
- 238000001764 infiltration Methods 0.000 abstract description 2
- 101150054854 POU1F1 gene Proteins 0.000 description 36
- 239000000463 material Substances 0.000 description 21
- 239000002689 soil Substances 0.000 description 16
- 230000003014 reinforcing effect Effects 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000005192 partition Methods 0.000 description 7
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 238000011900 installation process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
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Abstract
The utility model relates to a foundation ditch subgrade backfill structure uses in foundation ditch construction's field, and it includes the foundation ditch, all be provided with the concrete barricade on the interior diapire of foundation ditch and each inside wall, the concrete barricade on each inside wall of foundation ditch is provided with the steel sheet pile towards one side of foundation ditch, follow in the foundation of stretching into the foundation ditch below under the steel sheet pile. This application has the ground that blocks the foundation ditch periphery and to the inside infiltration of foundation ditch, reduces the foundation ditch possibility of collapsing effect.
Description
Technical Field
The application relates to the field of foundation pit construction, especially, relate to a foundation pit roadbed backfill structure.
Background
In the roadbed construction process, a foundation pit is excavated, the foundation pit is an earth pit excavated at the design position of a foundation according to the elevation and the plane size of the foundation, the foundation pit belongs to temporary engineering, the foundation pit is used for providing a space, the basic masonry operation can be carried out according to the position appointed by the design, and after the construction is finished, the foundation pit needs to be backfilled.
At present, the material of foundation pit backfill is generally soil or gravel material, the soil or gravel material is poured into the foundation pit, and then the foundation pit is paved and rolled in a mode of manually matching with a tamper so as to tamp backfill soil or backfill gravel material.
SUMMERY OF THE UTILITY MODEL
In order to solve the peripheral ground of foundation ditch and to the inside infiltration of foundation ditch and cause the problem that the foundation ditch sinks, this application provides a foundation ditch subgrade backfill structure.
The application provides a foundation ditch road bed backfill structure adopts following technical scheme:
the utility model provides a foundation ditch subgrade backfill structure, includes the foundation ditch, all be provided with the concrete barricade on the interior diapire of foundation ditch and each inside wall, the concrete barricade on each inside wall of foundation ditch is provided with the steel sheet pile towards one side of foundation ditch, follow in stretching into the foundation of foundation ditch below under the steel sheet pile.
By adopting the technical scheme, the concrete retaining wall plays a role in reinforcing the inner bottom wall and each inner side wall of the foundation pit and also plays a role in retaining water so as to prevent the water seepage of the foundation around the foundation pit to the inside of the foundation pit, thereby reducing the possibility of foundation pit collapse caused by the settlement of backfill or backfill gravel materials; the steel sheet pile is used for reinforcing the concrete retaining wall and supporting the concrete retaining wall, so that the concrete retaining wall is not easy to collapse due to extrusion of a foundation, and the steel sheet pile can also play a role in retaining water.
Preferably, a reinforcement cage is arranged in the concrete retaining wall.
Through adopting above-mentioned technical scheme, the steel reinforcement cage has increased the intensity of concrete barricade for the concrete barricade is more firm.
Preferably, the steel sheet pile is provided with an anchor rod, and the anchor rod penetrates through the concrete retaining wall and extends into the foundation around the foundation pit.
Through adopting above-mentioned technical scheme, the stock is used for consolidating between concrete barricade and the foundation ditch inside wall to firm concrete barricade improves the anti bearing capacity of concrete barricade to the foundation ditch inside wall.
Preferably, the dovetail ring groove is formed in the inner side wall of the foundation pit along the periphery, and concrete poured by the concrete retaining wall extends into the dovetail ring groove.
By adopting the technical scheme, when the concrete retaining wall is cast in situ by concrete, the concrete can be poured into the dovetail groove, after the concrete is solidified, the concrete in the dovetail groove can be coagulated into a whole with the concrete retaining wall formed by external concrete, so that the concrete retaining wall and the inner side wall of the foundation pit can be further reinforced, and the concrete retaining wall is further stabilized.
Preferably, be provided with a plurality of diagonal braces between steel sheet pile and the concrete barricade that is located on the foundation ditch inner diapire, the both ends of diagonal brace all are provided with the connecting plate, two the connecting plate is fixed mutually through fastening screw between steel sheet pile and the concrete barricade respectively.
Through adopting above-mentioned technical scheme, the diagonal brace plays the effect of supporting the steel sheet pile, improves the steel sheet pile to the anti bearing capacity of concrete barricade.
Preferably, the connecting plate is provided with hinged seats, and two ends of the inclined strut are respectively hinged to the two corresponding hinged seats.
Through adopting above-mentioned technical scheme, the both ends of diagonal brace articulate respectively on two articulated seats that correspond for the diagonal brace can adjust the angle of diagonal brace when the installation is fixed, so that better to the diagonal brace install fixedly.
Preferably, the inside of the foundation pit is provided with a plurality of layers of separation nets at intervals along the vertical direction, a plurality of edges corresponding to the plurality of layers of separation nets are arranged on the steel sheet pile at intervals along the periphery, and the edges of the separation nets are overlapped on the corresponding edges.
By adopting the technical scheme, the edges are used for erecting the separation nets, and the multi-layer separation nets enable the backfilled soil or gravel materials to be layered so as to independently support the backfilled soil or backfilled gravel materials on each layer, thereby reducing the possibility of integral settlement of the backfilled soil or backfilled gravel materials.
Preferably, the edge of the separation net is provided with an edge covering, the edge covering and the edge are fixed through fastening bolts, and reinforcing ribs are arranged between the bottom surface of the edge and the steel sheet pile.
By adopting the technical scheme, the binding edges and the seamed edges on the edges of the separation net are fixed through the fastening bolts, so that the separation net can be fixed, and the possibility that the edges of the separation net are separated from the seamed edges due to overlarge pressure bearing of the separation net is reduced; the reinforcing ribs are used for supporting and reinforcing the edges so as to improve the stability of the edges.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the concrete retaining wall plays a role in reinforcing the inner bottom wall and each inner side wall of the foundation pit and also plays a role in retaining water so as to prevent the water seepage of the foundation around the foundation pit to the interior of the foundation pit, thereby reducing the possibility of foundation pit collapse caused by the settlement of backfill or backfill gravel materials;
2. the steel sheet pile is used for reinforcing the concrete retaining wall and supporting the concrete retaining wall, so that the concrete retaining wall is not easy to collapse due to extrusion of a foundation, the inclined support rod plays a role in supporting the steel sheet pile, and the bearing capacity of the steel sheet pile on the concrete retaining wall is improved;
3. the multi-layer separation net enables the backfilled soil or sand and stone materials to be layered so as to independently support the backfilled soil or the backfilled sand and stone materials of each layer, and therefore the possibility of integral settlement of the backfilled soil or the backfilled sand and stone materials is reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of the present embodiment.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is an enlarged view of a portion B in fig. 1.
Description of reference numerals: 1. a foundation pit; 2. a concrete retaining wall; 3. steel sheet piles; 4. a reinforcement cage; 5. an anchor rod; 6. dovetail ring grooves; 7. a diagonal brace; 8. a connecting plate; 9. fastening screws; 10. a hinged seat; 11. separating the net; 12. an edge; 13. edge covering; 14. fastening a bolt; 15. and (5) reinforcing ribs.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses foundation ditch road bed backfill structure. Referring to fig. 1, backfill structure includes foundation ditch 1, and foundation ditch 1 is whole can be square, and 1 inside week side of foundation ditch is provided with steel sheet pile 3, and the last edge of steel sheet pile 3 is held with the opening of foundation ditch 1 and is leveled mutually, and the lower edge of steel sheet pile 3 extends into in the ground of 1 below of foundation ditch to fix steel sheet pile 3 in advance.
Referring to fig. 1, a certain distance is provided between the inner side wall of the foundation pit 1 and the steel sheet pile 3, a plurality of dovetail ring grooves 6 are formed in the inner side wall of the foundation pit 1 at intervals along the periphery, the number of the dovetail ring grooves 6 is determined according to the depth of the foundation pit 1, each dovetail ring groove 6 can be 0.5m, a steel reinforcement cage 4 is arranged between the inner side wall of the foundation pit 1 and the steel sheet pile 3, a constructor pours concrete between the inner side wall of the foundation pit 1 and the steel sheet pile 3, the height of the poured concrete is flush with the opening end of the foundation pit 1, the concrete and the steel reinforcement cage 4 are poured into a whole, after the concrete is solidified, a solid concrete retaining wall 2 is formed, the steel reinforcement cage 4 is arranged in the retaining wall 2, the strength of the concrete retaining wall 2 can be increased, and.
Referring to fig. 1, when concrete is poured between the inner side wall of the foundation pit 1 and the steel sheet pile 3, the poured concrete can be filled with the dovetail grooves 6, after the concrete is solidified, the concrete in the dovetail grooves 6 can be solidified with the concrete retaining wall 2 formed by external concrete into a whole, the concrete retaining wall 2 and the inner side wall of the foundation pit 1 can be reinforced, and the stability of the concrete retaining wall 2 is improved.
Referring to fig. 1, after concrete is poured between the inner side wall of the foundation pit 1 and the steel sheet pile 3, a constructor pours concrete on the inner bottom wall of the foundation pit 1, and after the poured concrete is solidified, a solid concrete retaining wall 2 is also formed on the inner bottom wall of the foundation pit 1. The concrete retaining wall 2 plays a role in retaining water while playing a role in reinforcing the inner bottom wall and the peripheral inner side walls of the foundation pit 1 so as to prevent the foundation around the foundation pit 1 from seeping water into the foundation pit 1, thereby reducing the possibility that the foundation pit 1 collapses due to the settlement of backfill or backfill gravel materials.
Referring to fig. 1, after the concrete is condensed, the concrete is fixed with the steel sheet pile 3 into a whole, the steel sheet pile 3 can be stabilized, the concrete retaining wall 2 can be supported and reinforced through the steel sheet pile 3, so that the concrete retaining wall 2 is not easy to collapse due to extrusion of the foundation, and meanwhile, the steel sheet pile 3 can also play a role in retaining water, and further prevents the water seepage of the foundation around the foundation pit 1 to the inside of the foundation pit 1.
Referring to fig. 1 and 2, a plurality of diagonal braces 7 are arranged between the lower portion of a steel sheet pile 3 and a concrete retaining wall 2 located on the inner bottom wall of a foundation pit 1 at intervals along the periphery, connecting plates 8 are arranged at two ends of each diagonal brace 7, hinged seats 10 are arranged on the two connecting plates 8, the hinged seats 10 are welded and fixed with the connecting plates 8, two ends of each diagonal brace 7 are hinged to the two hinged seats 10, when the diagonal braces 7 are installed, the connecting plates 8 at two ends of each diagonal brace 7 are attached to the steel sheet pile 3 and the concrete retaining wall 2 respectively, the angle of each diagonal brace 7 can be adjusted in the installation process, then the two connecting plates 8 are fixed between the steel sheet pile 3 and the concrete retaining wall 2 through fastening screws 9, the diagonal braces 7 can support the steel sheet pile 3, and the bearing capacity of the steel sheet pile 3 on the concrete retaining wall 2 is improved.
Referring to fig. 1, a plurality of anchor rods 5 are arranged at intervals along the periphery in the middle of the steel sheet pile 3, and after penetrating through the steel sheet pile 3 and the concrete retaining wall 2, the anchor rods 5 extend into the foundation around the foundation pit 1, so that the concrete retaining wall 2 and the inner side wall of the foundation pit 1 can be reinforced, the concrete retaining wall 2 is stabilized, and the bearing capacity of the concrete retaining wall 2 on the inner side wall of the foundation pit 1 is improved.
Referring to fig. 1 and 3, a plurality of layers of partition nets 11 are arranged above a plurality of diagonal support rods 7 in a foundation pit 1 at intervals, the number of the partition nets 11 is determined according to the depth of the foundation pit 1, the partition nets 11 can be arranged at intervals of 0.5m, a plurality of edges 12 corresponding to the plurality of layers of partition nets 11 are welded and fixed on the periphery of a steel sheet pile 3, reinforcing ribs 15 are welded and fixed between the bottom surface of each edge 12 and the steel sheet pile 3 to support and reinforce the edge 12, the edges of the partition nets 11 are lapped on the corresponding edges 12, metal covered edges 13 are welded and fixed on the edges of the partition nets 11, and then the covered edges 13 and the edges 12 are fixed through fastening bolts 14, so that the partition nets 11 can be firmly fixed.
Referring to fig. 1 and 3, during construction, a constructor first welds and fixes the lowermost edge 12 to the steel sheet pile 3, welds the corresponding reinforcing rib 15, earth or gravel material is then backfilled to the edge 12 and tamped, and then the spacer mesh 11 is placed over the edge 12, the binding 13 and the edge 12 on the edge of the separation net 11 are fixed by a fastening bolt 14, and then are separated upwards by 0.5m, welding and fixing a second edge 12 on the steel sheet pile 3, welding reinforcing ribs 15, backfilling soil or gravel materials to the second edge 12 and tamping, then, the second separation net 11 is placed on the second edge 12, and so on, so that the layered backfilling of the soil or the gravel material is realized, the soil or the gravel material of the corresponding layer is supported by the separation net 11, and the possibility of the integral sedimentation of the backfilled soil or the backfilled gravel material can be reduced.
The implementation principle of foundation pit 1 roadbed backfill structure in the embodiment of the application is as follows: during construction, a constructor firstly excavates a foundation pit 1, excavates dovetail ring grooves 6 on the inner side wall of the foundation pit 1 at intervals of 0.5m along the periphery, then places steel sheet piles 3 along the inner periphery of the foundation pit 1 to enable a certain distance to be reserved between the steel sheet piles 3 and the inner side wall of the foundation pit 1, enables the lower edges of the steel sheet piles 3 to extend into a foundation below the foundation pit 1, enables the upper edges of the steel sheet piles 3 to be flush with the opening end of the foundation pit 1, places steel reinforcement cages 4 between the steel sheet piles 3 and the inner side wall of the foundation pit 1, then pours concrete between the steel sheet piles 3 and the inner side wall of the foundation pit 1, enables the height of the poured concrete to be flush with the opening end of the foundation pit 1, in the process, the dovetail ring grooves 6 are filled with the concrete, after the concrete is solidified, a firm concrete retaining wall 2 is formed, the constructor pours the concrete on the inner bottom wall of the, and a firm concrete retaining wall 2 is also formed on the inner bottom wall of the foundation pit 1.
Then constructors install the diagonal brace 7, respectively stick the connecting plates 8 at two ends of the diagonal brace 7 to the steel sheet pile 3 and the concrete retaining wall 2, can adjust the angle of the diagonal brace 7 in the installation process, then fix the two connecting plates 8 with the steel sheet pile 3 and the concrete retaining wall 2 through the fastening screws 9 to fix the diagonal brace 7, then install the anchor rod 5 in the middle of the steel sheet pile 3, so that the anchor rod 5 penetrates through the steel sheet pile 3 and the concrete retaining wall 2 and extends into the foundation around the foundation pit 1, then constructors weld the edge 12 and the reinforcing rib 15 at the lower part of the steel sheet pile 3 and above the diagonal brace 7, backfill soil or gravel material to the edge 12 in the foundation pit 1, tamp the spacer mesh 11, place the spacer mesh 11 on the edge 12, fix the covered edge 13 and the edge 12 on the edge of the spacer mesh 11 by the fastening bolt 14, and then upwards separate the position of 0.5m, and welding and fixing a second edge 12 on the steel sheet pile 3, welding reinforcing ribs 15, backfilling soil or gravel materials to the second edge 12, tamping, placing a second separation net 11 on the second edge 12, and repeating the steps to realize layered backfilling of the soil or gravel materials.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a foundation ditch road bed backfill structure, includes foundation ditch (1), its characterized in that: all be provided with concrete barricade (2) on the interior diapire of foundation ditch (1) and each inside wall, concrete barricade (2) on each inside wall of foundation ditch (1) are provided with steel sheet pile (3) towards one side of foundation ditch (1), follow in the foundation of foundation ditch (1) below under steel sheet pile (3).
2. The foundation pit subgrade backfill structure according to claim 1, characterized in that: and a reinforcement cage (4) is arranged in the concrete retaining wall (2).
3. The foundation pit subgrade backfill structure according to claim 1, characterized in that: be provided with stock (5) on steel sheet pile (3), concrete barricade (2) are worn to establish and stretch into in the peripheral ground of foundation ditch (1) by stock (5).
4. The foundation pit subgrade backfill structure according to claim 1, characterized in that: dovetail ring grooves (6) are formed in the inner side wall of the foundation pit (1) along the periphery, and concrete poured by the concrete retaining wall (2) extends into the dovetail ring grooves (6).
5. The foundation pit subgrade backfill structure according to claim 1, characterized in that: a plurality of inclined supporting rods (7) are arranged between the steel plate pile (3) and the concrete retaining wall (2) located on the inner bottom wall of the foundation pit (1), connecting plates (8) are arranged at two ends of each inclined supporting rod (7), and the connecting plates (8) are fixed with the steel plate pile (3) and the concrete retaining wall (2) through fastening screws (9) respectively.
6. The foundation pit subgrade backfill structure according to claim 5, characterized in that: the connecting plate (8) is provided with hinged seats (10), and two ends of the inclined stay bar (7) are respectively hinged to the two corresponding hinged seats (10).
7. The foundation pit subgrade backfill structure according to claim 1, characterized in that: the steel sheet pile foundation pit is characterized in that multiple layers of separation nets (11) are arranged in the foundation pit (1) at intervals along the vertical direction, a plurality of edges (12) corresponding to the multiple layers of separation nets (11) are arranged on the steel sheet pile (3) at intervals along the periphery, and the edges of the separation nets (11) are arranged on the corresponding edges (12).
8. The foundation pit subgrade backfill structure according to claim 7, characterized in that: be provided with bordure (13) on the border that separates net (11), fix mutually through fastening bolt (14) between bordure (13) and edge (12), just be provided with between edge (12) bottom surface and steel sheet pile (3) strengthening rib (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021577074.9U CN212742547U (en) | 2020-08-01 | 2020-08-01 | Foundation ditch road bed backfill structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021577074.9U CN212742547U (en) | 2020-08-01 | 2020-08-01 | Foundation ditch road bed backfill structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212742547U true CN212742547U (en) | 2021-03-19 |
Family
ID=74987504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021577074.9U Expired - Fee Related CN212742547U (en) | 2020-08-01 | 2020-08-01 | Foundation ditch road bed backfill structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212742547U (en) |
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2020
- 2020-08-01 CN CN202021577074.9U patent/CN212742547U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210319 |
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| CF01 | Termination of patent right due to non-payment of annual fee |