CN209759925U - Assembled roadbed construction system suitable for deep and thick soft foundation - Google Patents

Assembled roadbed construction system suitable for deep and thick soft foundation Download PDF

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Publication number
CN209759925U
CN209759925U CN201920482087.9U CN201920482087U CN209759925U CN 209759925 U CN209759925 U CN 209759925U CN 201920482087 U CN201920482087 U CN 201920482087U CN 209759925 U CN209759925 U CN 209759925U
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deep
retaining
assembled
fabricated
plate
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CN201920482087.9U
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Inventor
袁松
骆才镔
邓霁伟
王希宝
李飞腾
易秋阳
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Sichuan Communication Surveying and Design Institute Co Ltd
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Sichuan Communication Surveying and Design Institute Co Ltd
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Abstract

The utility model discloses an assembled roadbed construction system suitable for dark soft base, including the ground line, be dark soft basic unit below the ground line, be provided with the bed course above the ground line, insert perpendicularly in the dark soft basic unit and be equipped with if intervene the stress tubular pile, detachable installation assembled retaining structure on the bed course, the vertical direction perpendicular to bed course of assembled retaining structure, the counter weight soil body has been laid to assembled retaining structure's bottom, the inherent counter weight soil body top packing of assembled retaining structure has geotechnological foam plastic block, the pavement layer has been laid to the inherent geotechnological foam plastic block top of assembled retaining structure. The utility model provides a current construction process lead to on the deep soft base the road bed construction speed slow, area is big, the problem that the road bed filling quality is difficult to guarantee to improve economy, the saving land resource of foundation treatment on the deep soft soil road bed.

Description

assembled roadbed construction system suitable for deep and thick soft foundation
Technical Field
the utility model relates to a highway construction field, concretely relates to assembled roadbed construction system suitable for dark soft base.
Background
The prestressed pipe pile is a highway subgrade treatment process applicable to deep soft foundation areas, pile sinking methods such as static pressure, hammering, vibration and pre-drilling are adopted, the prestressed pipe pile (1) is pressed to a deep soft foundation layer (6) with design requirements, foundation filling is carried out on a formed composite foundation, namely, traditional fillers (3) are filled on a cushion layer (2), the traditional fillers (3) are soil or stones, a ground line (5) is formed at the bottom of the cushion layer (2), the traditional fillers (3) have a certain gradient, the top of the traditional fillers are a pavement layer (4), and as shown in figure 1, the concrete process is as follows: prestressed pipe piles → cushion layers → layered filling of roadbed → pavement layer, traffic safety and construction of auxiliary facilities.
the construction process has the characteristics of mature technology, small settlement after roadbed construction and the like, and is widely used in foundation treatment of coastal soft soil deep areas in east China. However, because the traditional roadbed filling needs to be performed slope releasing according to a certain slope rate, the treatment area of the soft foundation at the bottom of the roadbed greatly exceeds the area of the road surface, the economy of foundation treatment is not strong, and a large amount of land is occupied. Meanwhile, in order to ensure the stability of the roadbed, the roadbed filling speed is strictly controlled. Along with the increase of the height of the roadbed, the longer the roadbed filling period is, the later-stage uneven settlement of the roadbed and the probability of pavement cracking are increased, and the roadbed filling quality is difficult to ensure.
SUMMERY OF THE UTILITY MODEL
the utility model aims at providing an assembled road bed construction system suitable for dark soft base solves current construction process and leads to the problem that road bed construction speed is slow, area is big, the road bed quality of filling is difficult to guarantee on the dark soft base to improve the economic nature of foundation treatment on the dark weak soil road bed, practice thrift land resource.
The utility model discloses a following technical scheme realizes:
The utility model provides an assembled roadbed construction system suitable for dark soft base, includes the ground line, be dark soft basic unit below the ground line, be provided with the bed course above the ground line, insert perpendicularly in the dark soft basic unit and be equipped with if intervene the stress tube stake, detachable assembled retaining structure of installing on the bed course, the vertical direction perpendicular to bed course of assembled retaining structure, the counter weight soil body has been laid to the bottom of assembled retaining structure, the inherent counter weight soil body top packing of assembled retaining structure has the geotechnological foam plastic block, the pavement layer has been laid to the inherent geotechnological foam plastic block top of assembled retaining structure.
The deep soft base layer of the utility model is a deep soft base, the prestressed pipe pile is inserted into the deep soft base layer for foundation treatment to form a composite foundation, the prestressed pipe pile is a prefabricated part, and the composite foundation has the advantages of high construction speed and small environmental pollution during foundation treatment; a sand gravel/broken stone cushion layer is arranged on the composite foundation for leveling and is also used as a cushion layer for drainage, and the assembly type retaining structure is a prefabricated structure, so that the assembly is convenient to assemble on site and the construction is convenient and fast; the vertical direction perpendicular to bed course of assembled retaining structure specifically means that assembled retaining structure is upright or approximately upright setting, promptly the counter weight soil body and the geotechnological foam plastic block between the assembled retaining structure can not put the slope processing in laying process, can reduce the scope that soft base punishment was dealt with by a wide margin, and the soft base processing area of road bed bottom is equal or close with its road surface area, practices thrift the land used and improves the economic nature that soft base was handled. Meanwhile, the thickness of the counterweight soil body is determined according to factors such as buoyancy of water on the field embankment, and after the counterweight soil body is laid at the bottom of the retaining wall, a geotechnical foam plastic (EPS) block is laid on the retaining wall to the bottom of the pavement. The embankment is mainly filled with light filler and has the characteristics of high construction speed, short construction period and the like. Meanwhile, the EPS blocks are light in weight, so that the driving soil pressure transmitted to the fabricated retaining structure and the self-weight stress of the top surface of the composite foundation are small, the settlement of the roadbed after construction is small, the structural economy of the retaining wall and the size and the arrangement distance of the prestressed pipe piles are optimized, the economy of roadbed construction on the deep soft foundation is further improved, the risk of increasing the probability of later-stage uneven settlement of the roadbed and pavement cracking is reduced, the geotechnical foam plastic (EPS) blocks are poured and maintained outside the field, and are transported to the field for paving after qualified maintenance, construction is convenient, construction speed is high, the geotechnical foam plastic (EPS) blocks are light materials, the increase of the base pressure acting on the bottom surface of the roadbed after filling is small, the later-stage settlement of the roadbed is small, and the requirements on the deep soft foundation are not high.
The utility model discloses a set up approximate upright assembled retaining structure on the bed course, can reduce the scope of soft base punishment by a wide margin, the soft base treatment area in road bed bottom equals or is close rather than road surface area, practices thrift the land use and improves the economic nature that soft base was handled, and assembled retaining structure is prefabricated construction and is convenient for the scene to be assembled, and it is convenient to be under construction, the utility model discloses an embankment adopts light filler to fill, has that construction speed is fast, construction cycle is short etc. characteristics, simultaneously, because EPS block self light in weight, the initiative soil pressure that transmits to assembled retaining structure and the dead weight stress of compound ground top surface are little, and the road bed settlement volume after construction is little, and the structure economy of retaining wall, the size and the arrangement interval of prestressing force tubular pile can optimize, have further improved the economic nature of road bed construction on the deep soft base, so, the utility model provides a solution that current construction technology leads to the road bed construction speed on the deep soft base slow down, Large occupied area and difficult guarantee of roadbed filling quality so as to improve the economy of foundation treatment on deep soft soil roadbeds and save land resources.
Further, assembled retaining structure is the cell type barricade, the cell type barricade includes the U-shaped groove, the U-shaped groove is detachable installs on the bed course, the counter weight soil body and geotechnological foam plastic block set up between 2 lateral walls in U-shaped groove.
The groove-shaped retaining wall has the advantage of light dead weight, is convenient to transport and assemble on site, and is convenient and fast to construct.
furthermore, a first inserting block is arranged at the bottom of the U-shaped groove and embedded into the cushion layer.
The arrangement of the first inserting block can realize that the groove-shaped retaining wall is inserted into the cushion layer, so that the stability of the groove-shaped retaining wall is improved.
Further, 2 side wall ends of the U-shaped groove are connected by a rib.
The arrangement of the rib plates can limit the counterweight soil body and the geotechnical foam plastic block body.
The rib plates can also be replaced by pull rods with the same effect.
Further, the rib plate is arranged in the middle of the U-shaped groove in the vertical direction.
further, assembled retaining structure is buttress formula structure, buttress formula barricade that buttress formula structure includes that 2 symmetries set up, buttress formula barricade includes the bottom plate, the up end of bottom plate is provided with shingle nail perpendicularly, the up end symmetry of bottom plate is provided with 2 buttresses, the buttresses is right angle set square, a right-angle side and the bottom plate of right angle set square are connected, and another right-angle side is connected with shingle nail, counter weight soil body and geotechnological foam block are filled between 2 shingle nails, and the buttresses setting is in the counter weight soil body and the geotechnological foam block outside, the bottom plate is detachable to be installed on the bed course.
Buttress formula barricade has the light advantage of dead weight, and the transportation and the on-the-spot assembly of being convenient for are under construction convenient.
Furthermore, a second inserting block is arranged at the bottom of the bottom plate and embedded into the cushion layer.
The setting of second inserted block can realize inserting buttress formula barricade into the bedding, improves the stability of buttress formula barricade.
Further, the fabricated retaining structure is made of light materials.
The light material can be EPS foam material or foam concrete and other light materials with corrosion resistance and high elastic modulus and difficult deformation.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
The utility model discloses on using the prestressing force tubular pile to carry out the basis of ground processing to deep soft base, through adopting the nearly upright assembled retaining structure of wall and filling light embankment material (geotechnological foamed plastic block), solved in the present highway construction field deep soft base punishment engineering volume big, engineering cost is high, the road bed settlement volume is big and construction speed is slow, the difficult problem of construction cycle length after the worker, realized high-efficient, quick and economically lay the purpose of establishing the road bed on deep soft base.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic view of a conventional deep and thick soft foundation section roadbed construction system;
FIG. 2 is a schematic view of a trough-type retaining wall assembly type roadbed construction system;
FIG. 3 is a schematic view of a buttress retaining wall fabricated roadbed construction system;
fig. 4 is a schematic structural view of the buttress type retaining wall.
Reference numbers and corresponding part names in the drawings:
1-prestressed pipe pile, 2-cushion layer, 3-traditional filler, 4-pavement layer, 5-ground line, 6-deep soft base layer, 7-groove type retaining wall, 8-counterfort retaining wall, 9-counterweight soil body, 10-geotechnical foam plastic block body, 71-first insert block, 72-U-shaped groove, 73-rib plate, 81-bottom plate, 82-wall panel, 83-counterfort and 84-second insert block.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Example 1:
As shown in fig. 2 to 4, an assembly type roadbed construction system suitable for a deep soft foundation comprises a ground line 5, a deep soft base layer 6 is arranged below the ground line 5, a cushion layer 2 is arranged above the ground line 5, if an intervention stress pipe pile 1 is vertically inserted into the deep soft base layer 6, an assembly type retaining structure is detachably installed on the cushion layer 2, the vertical direction of the assembly type retaining structure is perpendicular to the cushion layer 2, specifically, the assembly type retaining structure is a groove type retaining wall 7, the groove type retaining wall 7 comprises a U-shaped groove 72, the U-shaped groove 72 is detachably installed on the cushion layer 2, a counterweight soil body 9 and a geotechnical foam plastic block 10 are arranged between 2 side walls of the U-shaped groove 72, a counterweight soil body 9 is laid at the bottom of the assembly type retaining structure, and a geotechnical foam plastic block 10 is filled above the counterweight soil body 9 in the assembly type retaining structure, a pavement layer 4 is laid above the geotechnical foam plastic block 10 in the fabricated retaining structure; the fabricated supporting and retaining structure is made of a light material, and the light material can be a light material which is corrosion-resistant, has a high elastic modulus and is not easy to deform, such as an EPS (expandable polystyrene) foam material or foam concrete.
example 2:
As shown in fig. 2, in this embodiment, based on embodiment 1, a first insertion block 71 is disposed at the bottom of the U-shaped groove 72, and the first insertion block 71 is embedded in the cushion layer 2; the end parts of 2 side walls of the U-shaped groove 72 are connected through a rib plate 73; the rib 73 is provided in the middle of the U-shaped groove 72 in the vertical direction.
Example 3:
As shown in fig. 3 and 4, the present embodiment is based on embodiment 1, and is different from embodiment 1 in that: assembled retaining structure is buttress formula structure, buttress formula barricade 8 that buttress formula structure includes that 2 symmetries set up, buttress formula barricade 8 includes bottom plate 81, bottom plate 81's up end is provided with shingle 82 perpendicularly, bottom plate 81's up end symmetry is provided with 2 buttresses 83, buttresses 83 is right-angle triangle, a right-angle side and bottom plate 81 of right-angle triangle are connected, and another right-angle side is connected with shingle 82, counter weight soil body 9 and geotechnological foamed plastic block 10 are filled between 2 shingle 82, and buttresses 83 sets up in counter weight soil body 9 and geotechnological foamed plastic block 10 outside, bottom plate 81 is detachable to be installed on bed course 2.
Example 4:
As shown in fig. 3 and 4, in this embodiment, based on embodiment 3, a second insert block 84 is disposed at the bottom of the bottom plate 81, and the second insert block 84 is embedded in the cushion layer 2.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (8)

1. The utility model provides an assembled roadbed construction system suitable for soft base of deep thickness, a serial communication port, including ground line (5), be deep soft basic unit (6) below ground line (5), be provided with bed course (2) above ground line (5), insert perpendicularly in deep soft basic unit (6) and be equipped with if intervene stress pipe pile (1), detachable installation assembled fender structure is gone up in bed course (2), vertical direction perpendicular to bed course (2) of assembled fender structure, counter weight soil body (9) have been laid to the bottom of assembled fender structure, the packing has geotechnological foam plastic block (10) above counter weight soil body (9) in the assembled fender structure, the pavement layer (4) have been laid above geotechnological foam plastic block (10) in the assembled fender structure.
2. The fabricated roadbed construction system suitable for the deep soft foundation according to claim 1, wherein the fabricated retaining structure is a channel-type retaining wall (7), the channel-type retaining wall (7) comprises a U-shaped groove (72), the U-shaped groove (72) is detachably installed on the bedding course (2), and the counterweight soil body (9) and the geotechnical foam plastic block (10) are arranged between 2 side walls of the U-shaped groove (72).
3. The fabricated roadbed construction system suitable for the deep and thick soft foundation according to claim 2, wherein the bottom of the U-shaped groove (72) is provided with a first insert block (71), and the first insert block (71) is embedded in the cushion layer (2).
4. The fabricated roadbed construction system suitable for a deep soft foundation according to claim 2, wherein 2 side wall ends of the U-shaped groove (72) are connected by a rib plate (73).
5. The fabricated roadbed construction system suitable for the deep soft foundation according to claim 4, wherein the rib plate (73) is arranged in the middle of the U-shaped groove (72) in the vertical direction.
6. The fabricated roadbed construction system suitable for the deep soft foundation according to claim 1, wherein the fabricated retaining structure is a buttress structure, the buttress structure comprises 2 symmetrically arranged buttress retaining walls (8), the buttress retaining wall (8) comprises a bottom plate (81), the upper end surface of the bottom plate (81) is vertically provided with wall panels (82), the upper end surface of the bottom plate (81) is symmetrically provided with 2 buttresses (83), the buttresses (83) are right-angled triangular plates, one right-angled edge of each right-angled triangular plate is connected with the bottom plate (81), the other right-angled edge of each right-angled edge is connected with the wall panels (82), the counterweight soil body (9) and the geotechnical foam plastic block body (10) are filled between the 2 wall panels (82), and the buttresses (83) are arranged outside the counterweight soil body (9) and the geotechnical foam plastic block body (10), the bottom plate (81) is detachably arranged on the cushion layer (2).
7. The fabricated roadbed construction system suitable for the deep and thick soft foundation according to claim 6, wherein the bottom of the bottom plate (81) is provided with a second insert block (84), and the second insert block (84) is embedded in the cushion layer (2).
8. The fabricated roadbed construction system suitable for a deep and thick soft foundation according to claim 1, wherein the fabricated retaining structure is made of a light material.
CN201920482087.9U 2019-04-10 2019-04-10 Assembled roadbed construction system suitable for deep and thick soft foundation Active CN209759925U (en)

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CN201920482087.9U CN209759925U (en) 2019-04-10 2019-04-10 Assembled roadbed construction system suitable for deep and thick soft foundation

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111395059A (en) * 2020-03-23 2020-07-10 中铁二院工程集团有限责任公司 Light roadbed structure crossing karez, design and construction method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111395059A (en) * 2020-03-23 2020-07-10 中铁二院工程集团有限责任公司 Light roadbed structure crossing karez, design and construction method

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