CN112663541B - Installation and construction method for ecological prefabricated guardrail of central separation zone - Google Patents
Installation and construction method for ecological prefabricated guardrail of central separation zone Download PDFInfo
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- CN112663541B CN112663541B CN202011531296.1A CN202011531296A CN112663541B CN 112663541 B CN112663541 B CN 112663541B CN 202011531296 A CN202011531296 A CN 202011531296A CN 112663541 B CN112663541 B CN 112663541B
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Abstract
The invention relates to a construction method for installing a central separation zone ecological prefabricated guardrail, which comprises the following steps: step 1, filling a roadbed, and burying a prefabricated sump in the roadbed; step 2, mounting a prefabricated groove base on the roadbed; step 3, laying pipelines in the prefabricated groove base after the prefabricated groove base is installed in place; step 4, mounting the prefabricated guard bar; step 5, filling a layer of sandstone at the bottoms of the two prefabricated guardrails; step 6, connecting one end of a flexible corrugated pipe with a drain hole in the prefabricated groove base, and connecting the other end of the flexible corrugated pipe with a water inlet of the prefabricated sump; and 7, constructing the subbase layer, the base layer, the pavement layer and the surface layer of the road in sequence. The beneficial effects of the invention are: according to the invention, each part is prefabricated in a factory and assembled and spliced on site, so that the processing quality of the member can be effectively controlled, the field operation amount is reduced, the field construction efficiency is improved, and the construction period is greatly shortened.
Description
Technical Field
The invention relates to prefabricated construction of a central division strip, in particular to an installation construction method of an ecological prefabricated guardrail of the central division strip.
Background
In order to effectively separate vehicles traveling on a road from each other, a center separator is generally provided in the center of the road. Meanwhile, in order to avoid the interference of driving at night to the light of the vehicle, greening plants are usually planted in the central separation band to replace engineering anti-glare arrangement, and communication pipelines and the like are embedded in the central separation band. The existing construction method of the central dividing strip is that after the construction of a pavement base layer is finished, a groove is dug downwards at the center line of a road, a pipeline is embedded in the groove, a longitudinal drainage blind ditch is arranged along the groove, then guardrails are poured or kerbs are arranged along the two sides of the groove, and planting soil is backfilled in the groove. However, the construction mode has the defects of large field operation amount, difficult quality control and the like, and the buried cable pipeline is difficult to overhaul; in addition, the longitudinal drainage blind ditch is easy to block, so that water flow is immersed in the foundation, and the subgrade is settled and deformed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a construction method for installing a central separation zone ecological prefabricated guardrail.
The installation and construction method of the ecological prefabricated guardrail of the central dividing strip comprises the following steps:
step 1, filling a roadbed, and burying a prefabricated water collecting pit in the roadbed;
step 6, connecting one end of a flexible corrugated pipe with a water outlet on the prefabricated groove base, and connecting the other end of the flexible corrugated pipe with a water inlet of the prefabricated sump;
and 7, constructing a subbase layer, a base layer, a pavement layer and a surface layer of the road in sequence, and planting green plants in the planting soil.
Preferably, the method comprises the following steps: in the step 1, a sump cover plate is arranged on the prefabricated sump, a water inlet and a water outlet are arranged on the prefabricated sump, the water outlet of the prefabricated sump is connected with one end of a flexible corrugated pipe, and the other end of the flexible corrugated pipe is connected with a PVC drain pipe.
Preferably, the method comprises the following steps: in the step 2, the prefabricated groove base is integrally cast and molded by a bottom plate and two side plates, the side plates are positioned at the upper part of the bottom plate, fixing holes are formed in the side edges of the bottom plate, and soil nails penetrate through the fixing holes and penetrate into the roadbed; the two ends of the bottom plate are provided with bottom plate grooves and tongues, the two ends of the side plates are provided with side plate grooves and tongues, one end of the bottom plate is provided with a pre-embedded screw, and the other end of the bottom plate is provided with a connecting hole; the prefabricated groove bases are longitudinally assembled and spliced, the base plate tongue-and-groove and the side plate tongue-and-groove are respectively meshed with each other, the embedded screw is inserted into a connecting hole of the prefabricated groove bases of the adjacent sections, and a limiting nut is arranged on the embedded screw; the lower part of the side plate is provided with a drain hole, and the side plate is uniformly distributed with water permeable holes.
Preferably, the method comprises the following steps: in the step 3, a pipeline support is arranged on the inner side of the side plate of the prefabricated groove base, and the pipeline is supported on the pipeline support.
Preferably, the method comprises the following steps: and step 4, arranging guardrail tongues and grooves at two ends of the prefabricated guardrail, arranging an upper limiting block groove above the prefabricated guardrail, and longitudinally assembling and splicing the prefabricated guardrail, wherein the guardrail tongues and grooves are mutually occluded.
Preferably, the method comprises the following steps: the top end of the side plate is provided with a longitudinal side plate limiting groove, the side edge of the lower surface of the prefabricated cover plate is provided with two longitudinal lower limiting ribs, and the lower limiting ribs are clamped into the side plate limiting groove; the prefabricated guardrail structure is characterized in that a longitudinal guardrail limiting groove is formed in the bottom end of the prefabricated guardrail, two longitudinal upper limiting ribs are arranged on the side edges of the upper surface of the prefabricated cover plate, and the upper limiting ribs are clamped into the guardrail limiting groove.
Preferably, the method comprises the following steps: in the step 4, two ends of the lower limiting block are tightly attached to the inner side of the bottom of the prefabricated guardrail, and two ends of the upper limiting block are inserted into the grooves of the upper limiting block above the prefabricated guardrail.
The invention has the beneficial effects that:
1. according to the invention, each component is prefabricated in a factory and assembled and spliced on site, so that the processing quality of the component can be effectively controlled, the field operation amount is reduced, the field construction efficiency is improved, and the construction period is greatly shortened.
2. The prefabricated groove base is adopted, a groove does not need to be dug after the construction of the pavement base is finished, and the pipeline is directly erected in the prefabricated groove base.
3. According to the invention, the prefabricated guardrail is filled with planting soil and planted with green plants, so that the guardrail has a greening effect while effective isolation and protection are ensured.
4. The flexible corrugated pipes are arranged at the water inlet and the water outlet of the prefabricated water collecting pit, so that the phenomenon that the drainage pipeline is separated from the water inlet or the water outlet due to uneven settlement can be effectively avoided.
Drawings
FIG. 1 is a schematic view of an installation structure of an ecological prefabricated assembled guardrail;
FIG. 2 is a schematic diagram of a three-dimensional structure of a prefabricated trench base;
FIG. 3 is a schematic three-dimensional structure of a prefabricated cover panel;
FIG. 4 is a schematic three-dimensional structure of a prefabricated guard rail;
FIG. 5 is a schematic diagram of a three-dimensional structure of a prefabricated guardrail and a prefabricated cover plate;
FIG. 6 is a schematic diagram of a prefabricated trench base installation three-dimensional structure;
FIG. 7 is a schematic diagram of a three-dimensional assembled and spliced structure of prefabricated parts;
FIG. 8 is a half sectional view of a three-dimensional structure of a prefabricated sump;
fig. 9 is a half sectional view of a prefabricated sump and a sump cover plate assembled three-dimensional structure.
Description of reference numerals: 1-prefabricating a groove base; 11-a base plate; 12-side plates; 13-base plate tongue and groove; 14-side plate tongue-and-groove; 15-side plate limit groove; 16-pre-burying a screw rod; 17-a pipeline stand; 18-a pipeline; 19-water permeable holes; 110-drain holes; 111-connection hole; 112-fixing holes; 113-soil nails; 114-cement grout layer; 2, prefabricating a cover plate; 21-an upper limiting rib; 22-lower limiting rib; 3, prefabricating a guardrail; 31-guardrail limiting grooves; 32-upper limiting block groove; 33-an upper limit block; 34-a lower limit block; 35-guardrail tongue and groove; 4-prefabricating a water collecting pit; 41-sump cover plate; 42-a water inlet; 43-water outlet; 44-flexible bellows; 45-PVC drain pipe; 5-geotextile; 51-sand; 52-clay; 53-a limit nut; 61-roadbed; 62-underlayment; 63-a base layer; 64-paving layer; 65-surface layer.
Detailed Description
The present invention will be further described with reference to the following examples. The following examples are set forth merely to provide an understanding of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
As an embodiment, the invention provides a construction method for installing a central separation zone ecological prefabricated guardrail, which comprises the following steps:
step 1, filling a roadbed 61, and burying a prefabricated sump 4 in the roadbed 61, wherein the prefabricated sump 4 is shown in figures 8 and 9; a sump cover plate 41 is arranged on the prefabricated sump 4, a water inlet 42 and a water outlet 43 are arranged on the prefabricated sump 4, the water outlet 43 of the prefabricated sump 4 is connected with one end of a flexible corrugated pipe 44, and the other end of the flexible corrugated pipe 44 is connected with a PVC drain pipe 45, as shown in figure 1; water in the prefabricated groove base 1 enters the prefabricated sump 4 through the flexible corrugated pipe 44, then enters the PVC drain pipe 45 through the flexible corrugated pipe 44 from the water outlet 43, and finally is discharged from the PVC drain pipe 45; the flexible corrugated pipe 44 can ensure that the drainage pipeline is not separated when the prefabricated sump 4 and the prefabricated groove base 1 are settled and deformed.
As shown in fig. 2, the prefabricated trench base 1 is integrally cast and formed by a bottom plate 11 and two side plates 12, fixing holes 112 are formed in the side edges of the bottom plate 11, soil nails 113 penetrate through the fixing holes 112 and deeply penetrate into the roadbed 61, and the prefabricated trench base 1 is further fixed by the soil nails 113, so that the prefabricated trench base 1 is prevented from moving relative to the roadbed 61; the two ends of the bottom plate 11 are provided with bottom plate tongues 13, the two ends of the side plate 12 are provided with side plate tongues 14, one end of the bottom plate 11 is provided with a pre-embedded screw 16, and the other end of the bottom plate 11 is provided with a connecting hole 111; the prefabricated groove bases 1 are longitudinally assembled and spliced, the bottom plate tongue-and-groove 13 and the side plate tongue-and-groove 14 are respectively meshed with each other, the embedded screw 16 is inserted into the connecting hole 111 of the adjacent section of the prefabricated groove base 1, and the embedded screw 16 is provided with a limiting nut 53; the prefabricated groove base 1 is lengthened through plug connection, the embedded screw 16 arranged on the base plate tongue-and-groove 13 can prevent the prefabricated groove base 1 of the adjacent section from loosening, and meanwhile, the limit nut 53 can prevent the prefabricated groove base 1 of the adjacent section from tilting, so that the connection reliability is ensured; the lower part of the side plate 12 is provided with a water discharge hole 110, and the side plate 12 is uniformly distributed with water permeable holes 19; the water permeable holes 19 can guide a part of water flow in the pavement structure layer into the prefabricated trench base 1 for discharging, thereby improving the durability of the pavement structure layer.
Step 6, connecting one end of a flexible corrugated pipe 44 with a water outlet 43 on the prefabricated groove base 1, and connecting the other end of the flexible corrugated pipe with a water inlet 42 of the prefabricated sump 4, as shown in the attached drawing 1;
step 7, the construction of the subbase layer 62, the base layer 63, the pavement layer 64 and the surface layer 65 of the road is carried out in sequence, and green plants are planted in the planting soil 52, as shown in the attached figure 1.
Claims (4)
1. The installation and construction method of the ecological prefabricated guardrail of the central separation zone is characterized by comprising the following steps of:
step 1, filling a roadbed (61), and burying a prefabricated sump (4) in the roadbed (61);
step 2, mounting a prefabricated groove base (1) on the roadbed (61), measuring the center line of the lofting road, and paving a cement slurry layer (114) on the roadbed (61); aligning the center line of the prefabricated groove base (1) with the center line of a road, enabling the prefabricated groove base (1) to fall on a cement layer (114), and longitudinally assembling and splicing the prefabricated groove base (1);
the prefabricated groove base (1) is formed by integrally pouring a bottom plate (11) and two side plates (12), the side plates (12) are positioned at the upper part of the bottom plate (11), fixing holes (112) are formed in the side edges of the bottom plate (11), and soil nails (113) penetrate through the fixing holes (112) and penetrate into a roadbed (61); two ends of the bottom plate (11) are provided with bottom plate tongues (13), two ends of the side plate (12) are provided with side plate tongues (14), one end of the bottom plate (11) is provided with a pre-embedded screw (16), and the other end of the bottom plate (11) is provided with a connecting hole (111); the prefabricated groove base (1) is longitudinally assembled and spliced, the bottom plate tongue-and-groove (13) and the side plate tongue-and-groove (14) are respectively meshed with each other, the embedded screw (16) is inserted into a connecting hole (111) of the prefabricated groove base (1) of the adjacent section, and a limiting nut (53) is arranged on the embedded screw (16); the lower part of the side plate (12) is provided with a drain hole (110), and water permeable holes (19) are uniformly distributed on the side plate (12); the top end of the side plate (12) is provided with a longitudinal side plate limiting groove (15);
step 3, after the prefabricated groove base (1) is installed in place, a pipeline is arranged in the prefabricated groove base (1); installing a prefabricated cover plate (2), wherein the prefabricated cover plate (2) covers the prefabricated groove base (1); two longitudinal lower limiting ribs (22) are arranged on the side edge of the lower surface of the prefabricated cover plate (2), and the lower limiting ribs (22) are clamped into the side plate limiting grooves (15); the bottom end of the prefabricated guardrail (3) is provided with a longitudinal guardrail limiting groove (31), the side edge of the upper surface of the prefabricated cover plate (2) is provided with two longitudinal upper limiting ribs (21), and the upper limiting ribs (21) are clamped in the guardrail limiting groove (31);
step 4, installing prefabricated guardrails (3), wherein the prefabricated guardrails (3) are symmetrically arranged on the prefabricated cover plate (2), and a lower limiting block (34) is arranged between the bottoms of the two prefabricated guardrails (3);
step 5, filling a layer of sand stone (51) at the bottoms of the two prefabricated guardrails (3), paving geotextile (5) on the sand stone (51), filling planting soil (52) on the geotextile (5), and installing a limiting block (33) between the upper parts of the two prefabricated guardrails (3); guardrail tongues (35) are arranged at two ends of the prefabricated guardrail (3), an upper limiting block groove (32) is arranged above the prefabricated guardrail (3), the prefabricated guardrail (3) is longitudinally assembled and spliced, and the guardrail tongues (35) are mutually occluded;
step 6, connecting one end of a flexible corrugated pipe (44) with a water outlet (43) on the prefabricated groove base (1), and connecting the other end of the flexible corrugated pipe with a water inlet (42) of the prefabricated sump (4);
and 7, constructing a subbase layer (62), a base layer (63), a pavement layer (64) and a surface layer (65) of the road in sequence, and planting green plants in the planting soil (52).
2. The installation and construction method of the ecological prefabricated guardrail of the central separation zone according to claim 1, characterized in that in step 1, a sump cover plate (41) is arranged on the prefabricated sump (4), a water inlet (42) and a water outlet (43) are arranged on the prefabricated sump (4), the water outlet (43) of the prefabricated sump (4) is connected with one end of a flexible corrugated pipe (44), and the other end of the flexible corrugated pipe (44) is connected with a PVC drain pipe (45).
3. The installation and construction method of the ecological prefabricated guardrail of the central division zone according to claim 1, wherein in the step 3, a pipeline bracket (17) is arranged on the inner side of the side plate (12) of the prefabricated trench base (1), and the pipeline (18) is supported on the pipeline bracket (17).
4. The installation and construction method of the ecological prefabricated guardrail of the central division strip as claimed in claim 1, wherein in step 4, both ends of the lower limiting block (34) are tightly attached to the inner side of the bottom of the prefabricated guardrail (3), and both ends of the upper limiting block (33) are inserted into the upper limiting block groove (32) above the prefabricated guardrail (3).
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| CN202011531296.1A CN112663541B (en) | 2020-12-22 | 2020-12-22 | Installation and construction method for ecological prefabricated guardrail of central separation zone |
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| CN202011531296.1A CN112663541B (en) | 2020-12-22 | 2020-12-22 | Installation and construction method for ecological prefabricated guardrail of central separation zone |
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| CN112663541B true CN112663541B (en) | 2022-10-21 |
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| CN113931035A (en) * | 2021-09-10 | 2022-01-14 | 中铁八局集团昆明铁路建设有限公司 | Assembly type curb rainwater collecting system and construction method thereof |
| CN113914163B (en) * | 2021-09-17 | 2022-12-13 | 山东高速工程建设集团有限公司 | Construction method of cement soil road bed on highway |
| CN114370019B (en) * | 2022-01-18 | 2023-08-18 | 深圳市市政工程总公司 | Assembled centralized central partition belt structure |
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