CN113718573A - Soil retaining type soilless roadbed and construction method thereof - Google Patents
Soil retaining type soilless roadbed and construction method thereof Download PDFInfo
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- CN113718573A CN113718573A CN202111130314.XA CN202111130314A CN113718573A CN 113718573 A CN113718573 A CN 113718573A CN 202111130314 A CN202111130314 A CN 202111130314A CN 113718573 A CN113718573 A CN 113718573A
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- 238000010276 construction Methods 0.000 title claims abstract description 34
- 239000002689 soil Substances 0.000 title claims abstract description 31
- 238000011065 in-situ storage Methods 0.000 claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims description 45
- 239000010959 steel Substances 0.000 claims description 45
- 239000010410 layer Substances 0.000 claims description 21
- 239000004567 concrete Substances 0.000 claims description 16
- 230000003014 reinforcing effect Effects 0.000 claims description 11
- 239000002344 surface layer Substances 0.000 claims description 11
- 239000011380 pervious concrete Substances 0.000 claims description 8
- 238000007596 consolidation process Methods 0.000 claims description 7
- 238000005553 drilling Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 6
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C5/00—Pavings made of prefabricated single units
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Abstract
A soil-retaining soilless roadbed comprises a prefabricated road panel, wherein the prefabricated road panel comprises a standard section in the middle, middle fulcrum sections are arranged on two sides of the standard section, and end fulcrum sections are arranged on one side of the middle fulcrum sections far away from the standard section; the bottom of the middle fulcrum section is provided with a longitudinal rib; the prefabricated road panel is arranged above the cast-in-situ bored pile, and the cast-in-situ bored pile is contacted with the longitudinal ribs and supports the prefabricated road panel. By adopting the structure, the traditional soilless roadbed design is further improved, so that the soilless roadbed can be used as a soil retaining structure of a permanent structure or a foundation pit supporting means during construction of the permanent structure, the uneven settlement between new and old roadbeds is solved, the construction land scale is reduced, and the permanent structure can be arranged at the side slope roadbed with narrow construction space in a high-density urban area.
Description
Technical Field
The invention relates to the field of bridge engineering, in particular to a soil retaining type soilless roadbed and a construction method thereof.
Background
In the existing highway reconstruction and extension projects, most highway engineering projects adopt a mode of expanding and newly building a three-dimensional layer. The traditional road bed filling method is mostly adopted, the original road bed is settled stably, the settlement of the road bed at the wide splicing section is not stable due to limited construction time, cracks and new and old road beds are easy to generate connection and dislocation, a large amount of earthwork is needed to fill, the permanent land occupation of the road bed is increased, the construction is complex, and the method is not in line with the dominant industrial production concept. For some high-density urban areas, adverse factors such as rivers and the like often exist, and the traditional roadbed filling can cause encroachment on river channels and compress water cross sections, so that the traditional roadbed filling mode is no longer suitable for roadbed construction of the terrains. Meanwhile, along with the progress of a large number of urban reconstruction projects, because the extremely compressed space of a high-density urban area is limited, a plurality of piers are positioned between rivers and roadbed slopes or on steeper roadbed slopes, if a traditional roadbed filling mode is adopted, the piers can bear larger unilateral soil pressure, if the piers resist the large active soil pressure by themselves, the structural size of the piers is increased greatly, even the bridge scheme is not feasible due to the large eccentric soil pressure, and therefore the overall cost of the project and related safety risks are increased.
Disclosure of Invention
The invention aims to solve the technical problem of providing a soil retaining type soilless roadbed and a construction method thereof, which further improve the design of the traditional soilless roadbed to ensure that the soilless roadbed can be used as a soil retaining structure of a permanent structure or a foundation pit supporting means during the construction of the permanent structure, not only solves the problem of uneven settlement between new and old roadbeds and reduces the scale of construction land, but also makes it possible to arrange the permanent structure at the roadbed position with narrow construction space in a high-density urban area.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a soil-retaining soilless roadbed comprises a prefabricated road panel, wherein the prefabricated road panel comprises a standard section in the middle, middle fulcrum sections are arranged on two sides of the standard section, and end fulcrum sections are arranged on one side of the middle fulcrum sections far away from the standard section;
the bottom of the middle fulcrum section is provided with a longitudinal rib;
the prefabricated road panel is arranged above the cast-in-situ bored pile, and the cast-in-situ bored pile is contacted with the longitudinal ribs and supports the prefabricated road panel.
In the preferred scheme, the prefabricated road panels are multiple, the multiple prefabricated road panels are arranged on the widening side of the original road base road surface, and the prefabricated road panels and the original road base road surface are connected through pouring of the transverse post-pouring blocks.
In the preferred scheme, a reserved hoisting hole and a grouting hole are formed in the middle fulcrum section of the precast pavement slab.
In a preferred scheme, two adjacent prefabricated road panels are connected through pouring longitudinal wet seams.
In the preferred scheme, the top surface of the prefabricated road panel is provided with a guardrail on one side far away from the original road base road surface.
The construction method based on the soil-retaining type soilless roadbed specifically comprises the following steps:
1) pouring a plain concrete cushion layer on the roadbed on the widening side of the original roadbed;
2) pouring a permeable concrete cushion layer above the plain concrete cushion layer;
3) drilling a cast-in-situ bored pile and lowering a pile casing on the side slope with the widening of the original roadbed;
4) hoisting the prefabricated road panel to the pile top of the cast-in-place bored pile through the hoisting hole in the prefabricated road panel;
5) grouting and pile forming are carried out through grouting holes in the prefabricated road panel, and consolidation between the prefabricated road panel and the cast-in-situ bored pile is realized;
6) pouring transverse post-pouring blocks (5) on the pervious concrete cushion layer on one side, close to the original roadbed, of the prefabricated pavement slab to realize the lap joint between the original roadbed and the prefabricated pavement slab;
7) pouring a middle surface layer on the top surfaces of the original road foundation pavement and the prefabricated pavement slab;
8) pouring a surface layer on the middle surface layer;
9) and sequentially completing the installation and construction of the multiple pairs of prefabricated road panels along the direction of the original roadbed road.
In a preferable scheme, in the steps 1) -2), before the plain concrete cushion layer and the pervious concrete cushion layer are poured, a reinforcing pile is arranged in the roadbed, the lower end of the reinforcing pile extends into the roadbed for at least 1/3 lengths, and the upper end of the reinforcing pile does not exceed the elevation of the original roadbed road surface.
In a preferable scheme, in the step 6), the reinforcing piles are cast into the cast transverse post-cast blocks.
In a preferred embodiment, the hoisting and consolidating of the precast pavement slab in 4) -5) specifically comprises the following steps:
1) welding a steel bottom plate with a preformed hole at the upper end of the cast-in-situ bored pile, and ensuring that the preformed hole is aligned with a pile casing of the cast-in-situ bored pile;
2) erecting a mold around the steel bottom plate;
3) sequentially hoisting the two middle fulcrum sections of the prefabricated pavement slab to the steel bottom plate, and aligning the grouting holes with the reserved holes to realize the positioning of the middle fulcrum sections on the steel bottom plate;
4) grouting construction of the cast-in-situ bored pile is carried out through the grouting hole, and consolidation of the middle fulcrum section and the cast-in-situ bored pile is achieved;
5) hoisting the standard segment to the steel bottom plate between the two middle fulcrum segments;
6) performing wet joint pouring between the standard segment and the two middle fulcrum segments;
7) respectively hoisting the two end fulcrum sections to the steel bottom plate outside the two middle fulcrum sections;
8) performing wet joint pouring between the end fulcrum section and the middle fulcrum section;
9) and (6) removing the mold.
In the preferred scheme, two groups of U-shaped steel bars are welded on the top surface of the steel bottom plate, sleeve steel plates are sleeved outside the U-shaped steel bars in a welding mode, and the sleeve steel plates are aligned with the reserved holes;
and the positioning of the middle fulcrum section on the steel bottom plate is realized by inserting the sleeve steel plate into a grouting hole preset on the middle fulcrum section.
In the preferred scheme, the slope stability is lower, and soil retaining is needed
The soil retaining type soilless roadbed and the construction method thereof have the following beneficial effects by adopting the structure and the method:
(1) the assembled pile-plate type soilless roadbed is particularly suitable for secondary reconstruction and extension of a highway, has good technical and economic advantages for sections such as a soft soil foundation with strict foundation deformation control, low filling height and unsuitability for building bridges, and the like, and can play a role in retaining soil for other structures which cannot resist soil pressure for unfavorable terrains in high-density urban areas, and is a roadbed structure form easy to popularize;
(2) the pile plate soilless roadbed is a high-strength frame structure system, can well transmit vertical loads, can adapt to horizontal loads such as temperature, automobile braking force, soil pressure and the like, has a light structure and moderate manufacturing cost, and is a new structure combining the advantages of the traditional soilless roadbed and the double-row pile retaining wall;
(3) the structural system does not need to be filled with soil, saves land, reduces the influence on the surrounding environment and is beneficial to environmental protection; the plate members are prefabricated in a standardized way in a factory, repaired, maintained and transported to the site, so that the economical efficiency is good, the industrialized rapid construction is facilitated, and the method is suitable for popularization and application;
(4) the prefabricated part has high construction precision, high structural safety, short construction period and low cost, and is particularly suitable for secondary reconstruction and expansion of high-density urban expressway with earth retaining requirement.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 is a schematic overall structure of the present invention.
FIG. 2 is a side view of the structure of FIG. 1 according to the present invention.
Fig. 3 is a schematic top view of the prefabricated pavement slab of the present invention.
Fig. 4 is a front view of the prefabricated pavement slab of the present invention.
Fig. 5 is a schematic structural diagram of a steel soleplate of the invention in a front view.
Fig. 6 is a schematic structural view of the prefabricated pavement slab after the hoisting is completed.
Fig. 7 is a diagram showing a soil retaining state after the actual construction of the present invention is completed.
In the figure: the prefabricated track slab comprises a prefabricated track slab 1, a standard segment 101, a middle supporting point segment 102, an end supporting point segment 103, longitudinal ribs 2, a cast-in-situ bored pile 3, a longitudinal wet joint 4, a transverse post-cast block 5, a guardrail 6, a hoisting hole 7, a grouting hole 8, a roadbed 9, a plain concrete cushion layer 10, a pervious concrete cushion layer 11, a cushion block 12, a middle surface layer 13, an upper surface layer 14, a reinforced pile 15, a steel bottom plate 16, a preformed hole 161, a U-shaped steel bar 17 and a sleeve steel plate 18.
Detailed Description
Example 1:
as shown in fig. 1 and 3, a soil-retaining soilless roadbed comprises a prefabricated road slab 1, wherein the prefabricated road slab 1 comprises a standard segment 101 in the middle, two sides of the standard segment 101 are provided with middle fulcrum segments 102, and one side of the middle fulcrum segment 102 far away from the standard segment 101 is provided with an end fulcrum segment 103;
the bottom of the middle fulcrum section 102 is provided with a longitudinal rib 2;
prefabricated pavement panel 1 set up in drilling bored concrete pile 3 top, drilling bored concrete pile 3 and vertical rib 2 contact and form the support to prefabricated pavement panel 1.
The preferable scheme is as shown in fig. 1, the precast pavement panels 1 are multiple, the precast pavement panels 1 are arranged on the widening side of the original road base pavement, and the precast pavement panels 1 and the original road base pavement are connected by pouring through the transverse post-pouring blocks 5.
In a preferred scheme, as shown in fig. 3, a reserved hoisting hole 7 and a grouting hole 8 are arranged on a middle fulcrum section 102 of the precast pavement slab 1.
In a preferred scheme, as shown in fig. 2, two adjacent prefabricated road panels 1 are connected through pouring longitudinal wet joints 4.
In a preferred scheme, as shown in fig. 1, a guardrail 6 is arranged on the top surface of the prefabricated pavement slab 1 on the side far away from the original pavement surface.
Example 2:
on the basis of the embodiment 1, the soil-retaining type soilless roadbed construction is carried out by adopting the following method, which specifically comprises the following steps:
1) pouring a plain concrete cushion layer 10 on the roadbed 9 on the widening side of the original roadbed;
2) pouring a pervious concrete cushion layer 11 above the plain concrete cushion layer 10;
3) drilling the cast-in-situ bored pile 3 and lowering the pile casing on the side slope with the widening of the original roadbed;
4) hoisting the prefabricated pavement slab 1 to the pile top of the cast-in-situ bored pile 3 through the hoisting hole 7 on the prefabricated pavement slab 1;
5) grouting and pile forming are carried out through grouting holes 8 in the prefabricated pavement slab 1, and consolidation between the prefabricated pavement slab 1 and the cast-in-situ bored pile 3 is realized;
6) pouring the transverse post-pouring blocks 5 on the pervious concrete cushion layer 11 on one side, close to the original roadbed, of the prefabricated pavement slab 1 to realize the lap joint between the original roadbed and the prefabricated pavement slab 1;
7) pouring a middle surface layer 13 on the top surfaces of the original road base pavement and the prefabricated pavement slab 1;
8) pouring an upper surface layer 14 on the middle surface layer 13;
9) and sequentially completing the installation and construction of the multiple pairs of prefabricated road panels 1 along the direction of the original roadbed road.
In a preferred scheme, as shown in fig. 1, in the steps 1) -2), before the plain concrete cushion layer 10 and the pervious concrete cushion layer 11 are poured, a reinforcing pile 15 is arranged in the roadbed 9, the lower end of the reinforcing pile 15 extends into the roadbed 9 for at least 1/3, and the upper end of the reinforcing pile 15 does not exceed the height of the original roadbed road surface.
In a preferable scheme, in the step 6), the reinforcing piles 15 are cast into the cast transverse post-cast blocks 5.
In this example, the distance between the cast-in-situ bored piles 3 in step 3) is adjusted according to the position of the construction area, and a section requiring soil retaining is provided with a dense distance (2 m) and a section requiring no soil retaining is provided with a standard distance (5 m).
Example 3:
as shown in fig. 4-6, on the basis of embodiment 2, in steps 4) -5) described in embodiment 2, the hoisting and consolidating of the precast pavement slab 1 specifically includes the following steps:
1) welding a steel bottom plate 16 with a preformed hole 161 at the upper end of the cast-in-situ bored pile 3, and ensuring that the preformed hole 161 is aligned with a pile casing of the cast-in-situ bored pile 3;
2) erecting a mould around the steel bottom plate 16;
3) hoisting the two middle fulcrum sections 102 of the precast pavement panel 1 to the steel bottom plate 16 in sequence, and aligning the grouting holes 8 with the reserved holes 161 to realize the positioning of the middle fulcrum sections 102 on the steel bottom plate 16;
4) grouting construction of the cast-in-situ bored pile 3 is carried out through the grouting holes 8, and consolidation of the middle fulcrum section 102 and the cast-in-situ bored pile 3 is achieved;
5) hoisting the standard segment 101 to the steel bottom plate 16 between the two middle fulcrum segments 102;
6) performing wet joint pouring between the standard segment 101 and the two middle fulcrum segments 102;
7) respectively hoisting the two end fulcrum sections 103 to the steel bottom plate 16 outside the two middle fulcrum sections 102;
8) wet joint casting is performed between the end pivot segment 103 and the middle pivot segment 102;
9) and (6) removing the mold.
Preferably, as shown in fig. 5, two groups of U-shaped steel bars 17 are welded on the top surface of the steel bottom plate 16, sleeve steel plates 18 are welded outside the U-shaped steel bars 17, and the sleeve steel plates 18 are aligned with the preformed holes 161;
the middle fulcrum section 102 is positioned on the steel bottom plate 16 through the insertion of the sleeve steel plate 18 into the grouting hole 8 preset on the middle fulcrum section 102.
In this example, the elevation of the steel bottom plate 16 can be adjusted by the temporary hoop, and after a 3cm high modulus modified polymer ring gasket can be installed on the steel bottom plate 16, the prefabricated pavement panel 1 can be installed in sections, so that the wet joint pouring effect in the step 6) and the step 8) is enhanced.
This patent has carried out further improvement to traditional soilless road bed design, carries out local encryption with the scope that soilless road bed pile foundation kept soil at needs, and the foundation ditch support means when making its soil retaining structure or permanent structure construction that can regard as permanent structure uses, and the application of this technique has not only solved inhomogeneous settlement between new and old road bed, has reduced the building land scale, also sets up permanent structure for making the narrow and small road bed side slope department of high density urban area construction space to become possible.
Claims (10)
1. The utility model provides a soil retaining type does not have native road bed which characterized in that: the prefabricated pavement slab comprises a prefabricated pavement slab (1), wherein the prefabricated pavement slab (1) comprises a standard segment (101) in the middle, middle fulcrum segments (102) are arranged on two sides of the standard segment (101), and end fulcrum segments (103) are arranged on one side of the middle fulcrum segments (102) far away from the standard segment (101);
the bottom of the middle fulcrum section (102) is provided with a longitudinal rib (2);
prefabricated pavement panel (1) set up in drilling bored concrete pile (3) top, drilling bored concrete pile (3) and vertical rib (2) contact and form the support to prefabricated pavement panel (1).
2. A soil retaining type soilless subgrade according to claim 1, characterized in that: the prefabricated pavement slab (1) is a plurality of prefabricated pavement slabs, the prefabricated pavement slabs (1) are arranged on the widening side of the original pavement base, and the prefabricated pavement slabs (1) are connected with the original pavement base through pouring of the transverse post-pouring blocks (5).
3. A soil retaining type soilless subgrade according to claim 1, characterized in that: and a reserved hoisting hole (7) and a grouting hole (8) are arranged on the middle fulcrum section (102) of the precast pavement panel (1).
4. A soil retaining type soilless subgrade according to claim 1, characterized in that: and two adjacent prefabricated road panels (1) are connected through pouring longitudinal wet joints (4).
5. A soil retaining type soilless subgrade according to claim 1, characterized in that: and a guardrail (6) is arranged on one side of the top surface of the prefabricated pavement slab (1) far away from the original pavement surface.
6. A soil retaining type soilless subgrade construction method according to any one of claims 1 to 5 characterized by comprising the steps of:
1) pouring a plain concrete cushion layer (10) on a roadbed (9) at the widening side of the original roadbed;
2) pouring a permeable concrete cushion layer (11) above the plain concrete cushion layer (10);
3) drilling a bored pile (3) and lowering a pile casing on the side slope with the widening of the original roadbed;
4) hoisting the prefabricated pavement slab (1) to the pile top of the cast-in-situ bored pile (3) through hoisting holes (7) in the prefabricated pavement slab (1);
5) grouting and pile forming are carried out through grouting holes (8) in the prefabricated road panel (1), and consolidation between the prefabricated road panel (1) and the cast-in-situ bored pile (3) is realized;
6) pouring transverse post-pouring blocks (5) on a pervious concrete cushion layer (11) on one side, close to the original roadbed, of the prefabricated pavement slab (1) to realize the lap joint between the original roadbed and the prefabricated pavement slab (1);
7) pouring a middle surface layer (13) on the top surfaces of the original road base pavement and the prefabricated pavement slab (1);
8) pouring a surface layer (14) on the middle surface layer (13);
9) the installation and construction of a plurality of pairs of prefabricated road panels (1) are sequentially completed along the direction of the original road foundation.
7. A soil retaining type soilless roadbed construction method as claimed in claim 6, characterized in that: in the steps 1) -2), before the plain concrete cushion layer (10) and the pervious concrete cushion layer (11) are poured, a reinforcing pile (15) is arranged in the roadbed (9), the lower end of the reinforcing pile (15) extends into the roadbed (9) for at least 1/3 lengths, and the upper end of the reinforcing pile (15) does not exceed the elevation of the original roadbed pavement.
8. A soil retaining type soilless roadbed construction method as claimed in claim 7, characterized in that: in the step 6), the reinforced piles (15) are poured and buried into the poured transverse post-pouring blocks (5).
9. A soil retaining type soilless roadbed construction method as claimed in claim 6, characterized in that: in 4) -5), the hoisting and consolidation of the prefabricated pavement slab (1) specifically comprises the following steps:
1) welding a steel bottom plate (16) with a preformed hole (161) at the upper end of the cast-in-situ bored pile (3), and ensuring that the preformed hole (161) is aligned with a pile casing of the cast-in-situ bored pile (3);
2) erecting a mould around the steel bottom plate (16);
3) hoisting two middle fulcrum sections (102) of the precast pavement panel (1) to the steel bottom plate (16) in sequence, and aligning the preformed holes (161) through grouting holes (8) to realize the positioning of the middle fulcrum sections (102) on the steel bottom plate (16);
4) grouting construction of the cast-in-situ bored pile (3) is carried out through the grouting hole (8), and consolidation of the middle fulcrum section (102) and the cast-in-situ bored pile (3) is achieved;
5) hoisting the standard segment (101) to the steel bottom plate (16) between the two middle fulcrum segments (102);
6) performing wet joint pouring between the standard segment (101) and the two middle fulcrum segments (102);
7) respectively hoisting the two end fulcrum sections (103) to the steel bottom plate (16) at the outer sides of the two middle fulcrum sections (102);
8) performing wet joint pouring between the end pivot segment (103) and the middle pivot segment (102);
9) and (6) removing the mold.
10. A soil retaining type soilless roadbed construction method as claimed in claim 9, characterized in that: two groups of U-shaped steel bars (17) are welded on the top surface of the steel bottom plate (16), sleeve steel plates (18) are sleeved outside the U-shaped steel bars (17) in a welding mode, and the sleeve steel plates (18) are aligned to the preformed holes (161);
the middle fulcrum section (102) is positioned on the steel bottom plate (16) through inserting the sleeve steel plate (18) into a grouting hole (8) preset on the middle fulcrum section (102).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111130314.XA CN113718573A (en) | 2021-09-26 | 2021-09-26 | Soil retaining type soilless roadbed and construction method thereof |
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| CN202111130314.XA CN113718573A (en) | 2021-09-26 | 2021-09-26 | Soil retaining type soilless roadbed and construction method thereof |
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| CN212427080U (en) * | 2020-04-29 | 2021-01-29 | 中建三局第三建设工程有限责任公司 | Pile plate type soil-free roadbed |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106835879A (en) * | 2017-01-23 | 2017-06-13 | 安徽省交通规划设计研究总院股份有限公司 | Highway is laterally without support type peg board formula without earth roadbed and its construction method |
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Application publication date: 20211130 |