CN214882668U - Prevent half slope of differential settlement and fill embankment - Google Patents
Prevent half slope of differential settlement and fill embankment Download PDFInfo
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- CN214882668U CN214882668U CN202121286239.1U CN202121286239U CN214882668U CN 214882668 U CN214882668 U CN 214882668U CN 202121286239 U CN202121286239 U CN 202121286239U CN 214882668 U CN214882668 U CN 214882668U
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- 239000011150 reinforced concrete Substances 0.000 claims abstract description 14
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- 238000002347 injection Methods 0.000 claims 1
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- 239000002689 soil Substances 0.000 description 14
- 238000010276 construction Methods 0.000 description 10
- 230000003014 reinforcing effect Effects 0.000 description 10
- 239000000945 filler Substances 0.000 description 8
- 238000005056 compaction Methods 0.000 description 6
- 238000005507 spraying Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
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- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
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- 239000007921 spray Substances 0.000 description 1
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Abstract
The utility model discloses a prevent uneven settlement's half slope embankment of filling belongs to highway, urban road engineering field, mainly solves the problem that prior art half slope embankment of filling easily produces the landslide and subsides. Mainly comprises a base, a bottom plate, a filling body, a panel and a top plate. The filling material of the embankment adopts light aerated concrete, a flaky base is arranged at the slope toe of the roadbed, a reinforced concrete bottom plate is poured on the base, aerated concrete blocks are stacked on the bottom plate in a layered mode to form a filling body, a reinforced concrete top plate is paved at the top of the filling body, the top plate is connected with an excavated cutting bed, and a road structure layer is paved on the top plate and the cutting bed. The light aerated concrete blocks are adopted to fill the embankment, no consolidation settlement deformation exists, the blocks are bonded and fixed by cement mortar, and potential arc sliding surfaces cannot shear the blocks, so that side slope landslide is avoided. The problem of prior art semi-slope embankment easily subside fracture, landslide is solved.
Description
Technical Field
The utility model relates to a prevent half slope fill embankment of uneven settlement belongs to highway, urban road engineering field, in particular to roadbed in half fill dug highway section.
Background
Roadbeds at the edges of hills for highways or urban roads usually take the form of a half-filled and half-excavated cross section in order to reduce the amount of earth and stone and to keep the balance of the amount of earth and stone. If the treatment is proper, the roadbed is stable and reliable, the earth transportation quantity can be reduced, and the section form is relatively economic. A part of the cross section of the half-filling and half-digging type roadbed is excavated, a part of the cross section of the half-filling and half-digging type roadbed is filled, the excavated side is called a cutting, and the filled side is called a embankment. The roadbed in the form has the advantages that the mountain slope terrain is utilized, flat land is occupied as little as possible, excavated earthwork is filled in the embankment, the plane position of the section and the road elevation are reasonably determined through calculation, the basic earthwork balance is realized, and the construction cost is saved. When the slope gradient is 1:5 or less in the construction of the half-filled and half-excavated roadbed, steps need to be excavated on the transverse slope surface, the width of a step platform is not less than 2m, so that the steps are conveniently rolled by a road roller, and 2% -4% of reverse transverse slopes are made to prevent the filled embankment from sliding. When the slope is great, the step height of excavating the 2m wide platform is also great, if: the slope gradient is 1:1, a platform with the width of 2m is excavated, the height of the step is also 2m, when the slope is steeper, the height of the step is possibly more than 2m, soil is filled along the platform and is layered and rolled during construction, the soil wall higher than the platform is easy to collapse, and construction potential safety hazards exist. The width of a step platform for excavation in some constructions is not enough, even the step is not excavated, soil is directly filled on the slope, and the filled embankment easily forms a sliding surface on the slope, so that the road surface at the intersection of filling and excavation is cracked. The general side slope of the earth filled embankment needs to be set at a slope of 1:1.5, a large amount of land needs to be occupied outside a red line of a road, if the slope of the original ground slope is larger, the intersection distance between the side slope of the filled embankment and the existing ground slope is farther, even some side slopes cannot be intersected, in this case, a retaining wall needs to be arranged at a proper position, the embankment is filled on the retaining wall at a slope of 1:1.5, the occupied land is reduced, the retaining wall is additionally arranged, and the construction cost is correspondingly increased.
No matter the embankment is put on a slope or provided with a retaining wall, the filling compactness of the embankment meets higher requirements so as to reduce filling, backfilling, consolidation and settlement. The effective method for reducing the settlement is to improve the compaction degree of plain soil rolling, and the compaction degree is more than or equal to 92-96% according to general design requirements. In actual construction, it is difficult to control the filling compaction degree of all parts to meet the design requirement, and even if the filling compaction degree is met, self-weight consolidation settlement of the filling embankment is inevitable, so the settlement amount is allowed after working according to the standard regulation. For the semi-filled and semi-excavated embankment, the excavated cutting is the original soil geology and can not subside, even if the filled embankment does not exceed the allowable settlement amount, the filling and excavating junction can inevitably generate uneven settlement, and the road surface can seriously generate slab staggering, cracking and other diseases.
Disclosure of Invention
The utility model aims at: the utility model provides a prevent uneven settlement's half slope embankment of filling mainly solves the problem that prior art half slope embankment of filling easily produces landslide and subsides. The filling material of embankment adopts light aerated concrete, set up the slabstone basement in road bed toe department, the road roller rolls and inlays admittedly in the soil layer, pour the reinforced concrete bottom plate on the basement, the layering pile aerated concrete building block constitutes the filling body on the bottom plate, the building block is criss-cross fissure, the seam sprays mortar to crack, the top of building block pile filling body, lay the reinforced concrete roof, the roof links up with the cutting bed of excavation, the road structure layer is laid on roof and cutting bed. The slope surface of the filling body is provided with a panel poured by reinforced concrete, the panel is provided with a greening groove, and the seed vegetation is subjected to three-dimensional greening to form a light filling embankment which is free of consolidation settlement and strong in anti-skid capability. The beneficial effects are that: the light aerated concrete blocks are adopted to fill the embankment, no consolidation settlement deformation exists, the blocks are bonded and fixed by cement mortar, and potential arc sliding surfaces cannot shear the blocks, so that side slope landslide is avoided. The problem of prior art half slope embankment settlement fracture, landslide easily is solved, greatly reduced the emergence of embankment disease.
The utility model discloses a realize through following technique: a semi-slope filling embankment for preventing uneven settlement mainly comprises a base 1, a bottom plate 2, a filling body 3, a panel 4 and a top plate 5. The base 1 is located the bottom of embankment toe, and bottom plate 2 is located base 1 above, piles up the filling body 3 that light material constitutes on bottom plate 2 by layer, and the outside of filling body 3 sets up panel 4, plays the effect of protection light building block, and the top of filling body 3 sets up roof 5. The foundation 1, the bottom plate 2, the filling body 3, the panel 4 and the top plate 5 jointly form a filling embankment for filling roads on a half slope, the top plate 5 is connected with an excavated cutting bed 6, and a road structure layer 7 is laid on the top plate 5 and the cutting bed 6.
The foundation 1 is embedded on the foundation of the slope toe of the embankment through rolling and compaction of rubbles and plays a role in bearing upper load, and the bottom of the foundation 1 is provided with a reverse slope with the ratio of 1: n to 1: 5-10, so that the anti-sliding effect of the embankment is improved.
The bottom plate 2 is of a cast-in-place reinforced concrete structure and is embedded and fixed on the uneven substrate 1.
The filling body 3 is a light aerated concrete block, the core part of the embankment is formed by stacking the blocks in a layered criss-cross mode, the blocks are cuboids with the width and height of a and the length of (2-4) a, cement mortar is adopted for injecting and grouting gaps among the blocks, the outer sides of the filling bodies 3 are staggered in a layered mode when the filling bodies are stacked, a sawtooth slope surface with the gradient of 1: m of 1: 0.1-0.5 is formed, and a triangular area 8 between the blocks and the ground of the original slope is filled with concrete.
The panel 4 is of a cast-in-place reinforced concrete structure, the contact surface of the panel 4 and the filling body 3 is in a sawtooth shape, the outer side of the panel 4 is a slope surface with the ratio of 1: m, the greening grooves 9 are formed in the panel 4, reinforcing steel bars of the greening grooves 9 extend into the filling body 3 at intervals of 1-2 m, pull rods 10 are formed between the panel 4 and the filling body 3, and the binding force between the panel 4 and the filling body 3 is enhanced.
The roof 5 be reinforced concrete cast-in-place structure, roof 5 sets up grade beam 11 with panel 4 crossing department, sets up crashproof mound 12 on the grade beam 11.
The utility model discloses a lightweight aerated concrete is as fill material, aerated concrete's density only is 1/3 that plain soil rolled, and compressive strength then is 4~8 times for rolling plain soil, have very high compressive density ratio, no compression and dead weight consolidation warp, regard it as the material of filling the embankment, the dead weight reduces 2/3, the pressure of embankment bottom surface has been reduced greatly, the slope adopts steeper slope rate, compare with putting slope fill embankment, the area of embankment has been reduced greatly, can practice thrift the land acquisition expense, thereby reduce engineering cost.
Drawings
Fig. 1 is a cross-sectional view of the embankment of the present invention.
In the figure: 1-base, 2-bottom plate, 3-filling body, 4-panel, 5-top plate, 6-cutting bed, 7-road structure layer, 8-triangular area, 9-greening groove, 10-pull rod, 11-ground beam, 12-anti-collision pier and 13-greening vegetation.
Detailed Description
In order to better understand the present invention for those skilled in the art, the present invention will be further described with reference to fig. 1, and the embodiments mentioned are not intended to limit the present invention.
The utility model is used for highway or urban road half-fill partly dig highway section road bed, the cross section picture is seen in figure 1. The right side of figure 1 is the cutting of excavation, and the right side dotted line is original slope surface line, and the left side of figure 1 is the embankment of fill, is the utility model discloses a main structure. Prevent half slope filled embankment of uneven settlement, mainly by basement 1, bottom plate 2, the filling body 3, panel 4, roof 5 constitutes, basement 1 is located the bottom of embankment toe, bottom plate 2 is located above basement 1, filling body 3 that the layering pile light material constitutes on bottom plate 2, the outside of filling body 3 sets up panel 4, play the effect of protection light building block, the top of filling body 3 sets up roof 5, basement 1, bottom plate 2, filling body 3, panel 4, roof 5 constitute the fill embankment of filling the road on the half slope jointly, roof 5 links up with the cutting bed 6 of excavation, road structure layer 7 is laid on roof 5 and cutting bed 6.
When the utility model is used for embankment construction, the position of the embankment toe is calculated according to the cross section size of the embankment, the slope gradient 1: m and the thickness of the panel 4, the outer edge line of the base 1 is released at the original state slope, and the base 1 and the bottom plate 2 are buried under the toe ground. The dotted line at the lower left corner of the figure 1 is an original slope surface line, a foundation pit with the width of 2-3 m is excavated and used for arranging a substrate 1 and a bottom plate, and the slope should be placed according to soil quality in order to avoid collapse during excavation of the foundation pit. The general thickness of the substrate 1 is 0.5-1 m, and a reverse slope of 1: n is built on the bottom surface of the foundation pit, so that the anti-sliding effect of the embankment is improved. The reverse slope gradient 1: n is generally 1: 5-10. Such as: the reverse slope 1: n of the substrate 1 is 1:5 (namely 5m horizontal distance height difference is 1 m), the width of the substrate 1 is 2m, and then: the height difference between two sides of the substrate 1 is 0.4m, if the thickness of the outer side of the substrate 1 is 0.6m, the thickness of the inner side is 1m, and the top surface of the substrate 1 is flat. Filling rubbles in the foundation pit, wherein the rubbles require that the diameter of the rubbles is more than or equal to 300mm and accounts for more than 60%, filling joints with small rubbles, rolling the rubbles by a heavy road roller, rolling the rugged bottom surface of the rubbles by the road roller, and embedding the rugged bottom surface of the rubbles on the foundation of the slope toe of the embankment to form a substrate 1, thereby playing the roles of bearing upper load and preventing the embankment from slipping. The bottom plate 2 is laid on the base 1 which is rolled stably, the bottom plate 2 is of a cast-in-place reinforced concrete structure, reinforcing steel bars of the bottom plate 2 are bound, the diameter of each reinforcing steel bar is 16-20 mm, the distance is 150-200 mm, C25-C30 is adopted for pouring concrete, the concrete of the bottom plate 2 is embedded and fixed in gaps on the uneven base 1, and the binding force between the bottom plate 2 and the bottom plate 1 is enhanced. Before the bottom plate 2 is poured, the reinforcing steel bars of the panel 4 are embedded in the bottom plate 2 so as to be bound with the reinforcing steel bars of the panel 4.
After the concrete of the face plate 4 is finally set, when the concrete has a certain hardness, the filling body 3 starts to be piled on the bottom plate 2. The filling body 3 is a light aerated concrete block and is a road embankment core part formed by layering criss-cross stacking. The aerated concrete is widely applied to building engineering and can reduce the weight of buildings as a filler wall of a building frame structure. The density of the aerated concrete is 500-700 kg/m3The density of the compacted soil is 1800-2000 kg/m3The density of the aerated concrete is only about 1/3 of compacted soil embankment, the 28-day compressive strength of the aerated concrete can reach 4-6 Mpa, the compressive strength of the plain soil compaction is 0.5-1.5 Mpa, and the aerated concrete isThe compressive strength of the concrete is 4-8 times of that of the rolled plain soil, the concrete has a high compressive density ratio, the concrete is used as a material for filling the embankment, the dead weight is reduced by 2/3, the pressure of the bottom surface of the embankment is greatly reduced, the natural foundation can meet the requirement of bearing capacity without treatment, and the concrete is a good embankment filling material. The aerated concrete is made into a building block, the width and the height of the building block are alpha, the length of the building block is (2-4) alpha, the alpha is 200-500 mm suitable for facilitating manual stacking of the building block, and a construction site adopts a manual criss-cross stacking mode to fill the embankment. And spraying cement mortar with the thickness of about 10mm on the bottom plate 2 by adopting a mortar spraying device, stacking blocks on the mortar in a criss-cross staggered manner, reserving gaps of 10-20 mm between the blocks, stacking the blocks for one layer, and spraying the cement mortar to fill the gaps. When the filling bodies 3 are stacked, the outer sides are layered and staggered to form a sawtooth slope surface with the gradient 1: m of 1: 0.1-0.5, which is shown in the left side of the figure 1. Such as: the slope is designed to be 1:0.2, building blocks with the width and the height a of 300mm are adopted, the joint surface of the filling body 3 and the face plate 4 is arranged, and when one layer of building blocks on the upper layer is stacked, the distance between the edge of the building block on the upper layer and the edge of the building block on the lower layer is 60mm back towards the inner side of the embankment. When the building blocks are stacked to the ground of the original slope surface (the foundation pit is internally provided with a slope for digging the foundation pit), the bottom edges of the building blocks are propped against the ground of the original slope surface, a triangular area 8 is formed between the building blocks and the ground of the original slope, and if the length of the building blocks exceeds the required length, the building blocks can be cut into the required length. The triangular area 8 is filled with concrete, and cement mortar can be sprayed while filling to form the cement-filled triangular area 8. When stacking, the building blocks are staggered in a criss-cross way, the width of the joint is controlled substantially, the stacking, slurry spraying and seam filling work efficiency is high, and the construction is simple and convenient.
And pouring a panel 4 at the slope formed by the building blocks which are piled up layer by layer after moving back, wherein a greening groove 9 is formed on the panel 4. Panel 4 is cast-in-place reinforced concrete structure, panel 4 thick 100~200mm, steel bar diameter 16~20mm, interval 150~200mm, tie up panel 4's reinforcing bar with pre-buried reinforcing bar at bottom plate 2, tie up panel 4 reinforcing bar along the domatic outside of 3 cockscomb structures of filler, it is firm with 4 steel bar ligatures of panel to afforest groove 9's reinforcing bar, when pile 3 building blocks of filler, one department of 1~2m of afforestation groove 9's reinforcing bar interval stretches into in filler 3, form pull rod 10 at panel 4 and filler 3, pull rod 10 sets up the crotch in filler 3, the anchor is in the gap of filler 3, reinforcing panel 4 and filler 3's cohesion. The formwork of the panel 4 is supported, the steel bars of the greening grooves 9 extend out of the formwork, C25-C30 concrete is adopted for pouring the panel 4, the contact surface of the panel 4 and the filling body 3 is in a sawtooth shape, the embedding of the panel 4 and the filling body 3 is enhanced, and the outer side of the panel 4 is in a slope surface of 1: m. The panel 4 should be poured in sections, and the height of one-time pouring is preferably one layer of greening grooves 9. The greening grooves 9 are cast by C25-C30 concrete on the template for supporting the greening grooves 9 on the outer side of the panel 4, and the panel 4 and the greening grooves 9 can be supported and cast together.
When the panel 4 is poured to the 3 tops of the filling body, a top plate 5 is prepared to be poured, the top plate 5 is of a reinforced concrete cast-in-place structure, reinforcing steel bars of the top plate 5 are bound and connected with reinforcing steel bars of the panel 4, the thickness of the top plate 5 ranges from 200mm to 300mm, and the top surface of the top plate 5 is provided with a road cross slope consistent with a road structure layer 7. Two-layer reinforcing bar about 5 roof, reinforcing bar diameter 16~20mm, interval 150~200mm, roof 5 adopts C25~ C30 concrete placement. The top plate 5 has a larger diffusion angle, and can diffuse the automobile load on the road surface, so that the functions of diffusing the automobile load and reducing the pressure of the filling body 3 are achieved. Roof 5 sets up grade beam 11 with panel 4 crossing department, and the height of grade beam 11 is the thickness of road structure layer 7, before pouring roof 5, the reinforcing bar of grade beam 11 is pre-buried in roof 5, sets up crashproof mound 12 on the grade beam 11, and the reinforcing bar of crashproof mound 12 is pre-buried in grade beam 11, and crashproof mound 12 is pour to the formwork.
When roof 5 reached 70% of design intensity, roll cutting bed 6 with roof 5 linking, cutting bed 6 should reserve out the virtual height that is higher than roof 5 before rolling, general 10~30mm, adopt heavy road roller to roll cutting bed 6, reach the compactness of designing requirement after, if cutting bed 6 still exceeds roof 5, adopt leveler or manual trimming, cutting bed 6 should have the cross slope unanimous with road structural layer 7. The road structure layer 7 is laid layer by layer.
Finally, planting soil is filled in the greening groove 9, and greening vegetation 13 such as shrubs, herbaceous flowers and trees and the like are planted to form three-dimensional greening of the embankment slope.
While the specification and drawings set forth herein are directed to particular embodiments, this disclosure is not intended to be limiting, and it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the appended claims.
Claims (6)
1. The utility model provides a prevent half slope fill embankment of differential settlement, characterized by: mainly by basement (1), bottom plate (2), the filling body (3), panel (4), roof (5) are constituteed, basement (1) is located the bottom of embankment toe, bottom plate (2) are located on basement (1), filling body (3) that the layering pile light material constitutes on bottom plate (2), the outside of filling body (3) sets up panel (4), play the effect of protection light building block, the top of filling body (3) sets up roof (5), basement (1), bottom plate (2), filling body (3), panel (4), roof (5) constitute the embankment of filling the road on the half slope jointly, roof (5) link up with the cutting bed (6) of excavation, road structure layer (7) are laid on roof (5) and cutting bed (6).
2. The uneven settlement preventing semi-slope embankment as claimed in claim 1, wherein: the foundation (1) is embedded on the foundation of the slope toe of the embankment in a rolling mode through rubbles and plays a role in bearing upper load, and the bottom of the foundation (1) is provided with a reverse slope with the ratio of 1: n being 1: 5-10, so that the anti-sliding effect of the embankment is improved.
3. The uneven settlement preventing semi-slope embankment as claimed in claim 1, wherein: the bottom plate (2) is of a cast-in-place reinforced concrete structure and is embedded and fixed on the rugged substrate (1).
4. The uneven settlement preventing semi-slope embankment as claimed in claim 1, wherein: the filling body (3) is a light aerated concrete block, the core part of the embankment is formed by stacking the blocks in a layered criss-cross mode, the blocks are cuboids with the width and height of a and the length of 2-4 a, cement mortar is adopted for injection grouting of gaps among the blocks, the outer sides of the filling body (3) are staggered in a layered mode when the filling body is stacked, a sawtooth slope surface with the gradient of 1: m of 1: 0.1-0.5 is formed, and a triangular area (8) between the blocks and the ground of the original slope is filled with concrete.
5. The uneven settlement preventing semi-slope embankment as claimed in claim 1, wherein: the panel (4) is of a cast-in-place reinforced concrete structure, the contact surface of the panel (4) and the filling body (3) is in a sawtooth shape, the outer side of the panel (4) is a slope surface with the ratio of 1: m, a greening groove (9) is arranged on the panel (4), the reinforcing steel bars of the greening groove (9) stretch into the filling body (3) at the interval of 1-2 m, a pull rod (10) is formed between the panel (4) and the filling body (3), and the binding force between the panel (4) and the filling body (3) is enhanced.
6. The uneven settlement preventing semi-slope embankment as claimed in claim 1, wherein: the roof (5) be reinforced concrete cast-in-place structure, roof (5) and panel (4) crossing department set up grade beam (11), set up crashproof mound (12) on grade beam (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121286239.1U CN214882668U (en) | 2021-06-09 | 2021-06-09 | Prevent half slope of differential settlement and fill embankment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121286239.1U CN214882668U (en) | 2021-06-09 | 2021-06-09 | Prevent half slope of differential settlement and fill embankment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214882668U true CN214882668U (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121286239.1U Expired - Fee Related CN214882668U (en) | 2021-06-09 | 2021-06-09 | Prevent half slope of differential settlement and fill embankment |
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| Country | Link |
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| CN (1) | CN214882668U (en) |
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2021
- 2021-06-09 CN CN202121286239.1U patent/CN214882668U/en not_active Expired - Fee Related
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Granted publication date: 20211126 |