CN113982002A - Construction method of light side slope framework structure - Google Patents
Construction method of light side slope framework structure Download PDFInfo
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- CN113982002A CN113982002A CN202111481457.5A CN202111481457A CN113982002A CN 113982002 A CN113982002 A CN 113982002A CN 202111481457 A CN202111481457 A CN 202111481457A CN 113982002 A CN113982002 A CN 113982002A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/205—Securing of slopes or inclines with modular blocks, e.g. pre-fabricated
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/202—Securing of slopes or inclines with flexible securing means
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Abstract
The invention discloses a construction method of a light side slope framework structure, which comprises the following steps: s1, excavating a skeleton structure foundation pit; s2, constructing an end head closed structure in a triangular area at the bottom of the foundation pit; s3, leveling a foundation pit, paving a prefabricated cement blanket with a water blocking edge structure, and constructing U-shaped soil nails; s4, placing prefabricated lightweight concrete blocks on the cement blanket in the foundation pit, placing the connecting rods, and connecting the connecting rods; s5, constructing and reinforcing soil nails; s6, repeating the steps S4 to S5, and completing the construction of all the lightweight concrete blocks, the series connection rods and the reinforced soil nails; s7, wrapping the cement blanket with a lightweight concrete block, and sewing; s8, sprinkling water to the exposed cement blanket, and curing; and S9, constructing an end head closed structure in a triangular area at the top of the foundation pit. The light side slope framework structure obtained by the construction method has the characteristics of light weight, good durability, convenience in construction, high construction efficiency and good economy, and can be used for protecting filled roadbed side slopes or non-expansive rock-soil cutting side slopes.
Description
Technical Field
The invention relates to the technical field of geotechnical engineering, in particular to a construction method of a light side slope framework structure.
Background
The side slope framework structure is widely applied to protection engineering of roadbed filling and soil excavation side slopes, the traditional framework structure construction method mainly comprises three main forms of masonry of mortar rubble, masonry of concrete precast blocks and concrete cast-in-place, and the three construction methods have the defects of large labor consumption and low construction efficiency, so that the construction cost is high, and the main reasons are that the material transportation is difficult and the manual construction efficiency is low due to the self-weight of the framework structure. If light materials such as light concrete are adopted as a framework structure, the problems that the light concrete has low durability when meeting water, the structure has weak shearing resistance, the exposed part is easy to damage, the water blocking edge part of the structure is difficult to connect and is easy to damage and the like exist. Therefore, it is urgently needed to provide a suitable framework slope protection structure and a construction method.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a construction method of a light side slope framework structure, which can effectively solve the problems of the traditional framework revetment.
In order to achieve the above purpose, the invention provides the following technical scheme:
a construction method of a light side slope framework structure comprises the following steps:
the light structure layer is arranged on the slope surface and comprises a plurality of light concrete blocks and a cement blanket layer wrapped outside the light concrete blocks, each light concrete block is provided with a series rod, the series rods are longitudinally arranged along the slope surface, and the series rods on the adjacent light concrete blocks are mutually connected; the two sides of the top surface of the light structural layer are provided with water stopping edge structures which are longitudinally arranged along the slope surface of the side slope;
the reinforced soil nails are arranged at the joint of the adjacent lightweight concrete blocks, the reinforced soil nails are longitudinally arranged in the side slope along the slope surface of the side slope at intervals, the lower ends of the reinforced soil nails enter the side slope stable layer, and the top ends of the reinforced soil nails are fixedly connected with the serial connection rods;
the end sealing structure is arranged at the bottom of the slope surface and the top of the slope surface, the end sealing structure is connected with the light structural layer, and the top surface of the end sealing structure is flush with the top surface of the light structural layer;
the construction method comprises the following steps:
s1, excavating the skeleton structure foundation pit on the side slope;
s2, constructing the end head closed structure at the bottom of the slope surface in the triangular area at the bottom of the foundation pit;
s3, leveling the bottom of the foundation pit, paving a prefabricated cement blanket with a water blocking edge structure in the foundation pit, and constructing U-shaped soil nails at intervals along the slope surface of the side slope at the bottom of the foundation pit where the cement blanket is paved, wherein the U-shaped soil nails penetrate through the cement blanket in the foundation pit and are fixed in the soil body of the side slope;
s4, placing prefabricated lightweight concrete blocks on the cement blanket in the foundation pit from bottom to top, placing a series connection rod in a preformed hole of each prefabricated lightweight concrete block, and connecting the series connection rods on the adjacent lightweight concrete blocks;
s5, drilling to construct the reinforced soil nails;
s6, repeating the steps S4 to S5 until all the lightweight concrete blocks, the connecting rods and the reinforcing soil nails are constructed;
s7, wrapping the lightweight concrete block with the cement blanket with the water retaining edge structure in the foundation pit, and sewing the cement blanket at the position where the water retaining edge structure is arranged;
s8, spraying water on the exposed cement blanket, and curing to form the light structural layer;
and S9, constructing an end sealing structure at the top of the slope surface of the side slope in the triangular area at the top of the foundation pit.
According to the technical scheme, the cement blanket is used for wrapping the lightweight concrete prefabricated block to form a lightweight structural layer of a framework structure for slope protection, and the lightweight concrete block wrapped by the cement blanket can solve the problems that the lightweight concrete is low in durability and poor in shearing resistance under the action of external force due to the influence of water; the light structural layer has the characteristics of light weight, good durability, convenient construction, high construction efficiency, good economy and the like, can be used for protecting filled subgrade slopes or non-expansive rock-soil cutting slopes, but is not suitable for slope surface protection with large uneven deformation of the slope surface; after the cement blanket is laid in the foundation pit in the construction process, the stability between the cement blanket and the side slope soil body can be enhanced by constructing the U-shaped soil nails at intervals, so that the formed framework structure has better stability; the end sealing structure is constructed in the triangular area of the foundation pit and used for shielding the top surface and the bottom surface of the light structural layer, so that the problem of irregular stress concentration of the light concrete can be solved; the lightweight concrete blocks are connected by adopting the tandem connection rods and are fixed with the side slope through the reinforced soil nails, so that the formed lightweight framework has good structural integrity and high stability; the rectangular section is wrapped by the cement blanket and sewn with the cement blanket to form a water blocking edge structure, and the water blocking edge structure is flexibly connected with the framework structure, so that the water blocking edge structure is not easy to damage, simple and rapid in construction and good in economical efficiency; during construction, the exposed cement blanket is first sprayed with water to cure, and the cement blanket around the foundation pit may be cured automatically under the action of underground water or pore water to form high strength cement blanket layer.
In the invention, the longitudinal direction of the side slope surface refers to the up-down direction of the side slope surface, and the transverse direction of the side slope surface refers to the width direction of the side slope surface. The foundation pit bottom triangular area is a triangular area formed by the bottom surface of the light structure layer and the road surface at the bottom of the side slope, and the foundation pit top triangular area is a triangular area formed by the top surface of the light structure layer and the road surface at the top of the side slope.
It should be noted that the lightweight concrete block needs to be prefabricated first, the section width and thickness of the lightweight concrete block are designed according to different framework structures, a hollow preformed hole is arranged in the center of the lightweight concrete block, and the center line of the preformed hole is longitudinally parallel to the slope surface of the side slope; the serially-connected rods on the adjacent light concrete blocks are mutually connected to form the serially-connected rod connecting line, and the serially-connected rod connecting line is longitudinally parallel to the slope surface of the side slope.
Further, the end head closed structure is built by concrete or mortar rubble. The top surface of the end sealing structure at the bottom of the slope surface of the side slope is flush with the top surface of the flexible structural layer, and the top surface of the end sealing structure at the top of the slope surface of the side slope is flush with the road surface on the side slope.
Further, the length of the lightweight concrete block is 0.3-0.5m, the length of the lightweight concrete block refers to the length along the longitudinal direction of the slope surface of the side slope, and the width and the thickness of the lightweight concrete block are consistent with the required size of the framework structure. Furthermore, the aperture of the preformed hole of the prefabricated lightweight concrete block is 0.05-0.08 m.
Further, the width of the water retaining edge structure is 5-10cm, and the height of the water retaining edge structure is 10-15 cm. In the invention, the width of the water retaining edge structure refers to the length along the transverse direction of the slope surface of the side slope, and the height of the water retaining edge structure refers to the length along the vertical line of the slope surface of the side slope.
Further, the water retaining edge structure comprises a rectangular section bar and a cement blanket layer wrapped outside the rectangular section bar. Furthermore, in step S3, the prefabricated cement blanket with water-blocking edge structure is formed by sewing and connecting the rectangular-section-wrapped cement blanket with the lightweight structural layer. And (S8) spraying water on the lightweight concrete block structure wrapped by the cement blanket, spraying water on the rectangular section-wrapped cement blanket, and curing to form the water retaining edge structure. Further, the rectangular section bar is made of PVC materials.
Furthermore, the width of the U-shaped soil nails is 0.1-0.2m, and the distance between the U-shaped soil nails and the slope surface of the slope, which are longitudinally arranged at intervals, is 1.0-2.0 m.
Furthermore, the depth of the lower end of the U-shaped soil nail entering the slope stabilizing layer is not less than 0.3 m.
Furthermore, the length of each section of the connecting rod is not less than 2m, and the connecting rod can be made of reinforcing steel bars with the diameter of 20-28 mm.
Further, the thickness of the cement blanket is 1-2 cm.
Furthermore, the interval of the reinforced soil nails arranged along the slope surface of the side slope is 3-5m, the depth of the lower ends of the reinforced soil nails entering the slope stabilizing layer is not less than 2m, and the reinforced soil nails are arranged at the joint of the adjacent prefabricated lightweight concrete blocks.
Further, in step S4, when the precast lightweight concrete blocks are placed from bottom to top, cement mortar is used for building between adjacent precast lightweight concrete blocks.
Further, in step S7, after the cement blanket is sewn, the gap between the closed cement blanket and the side of the foundation pit is filled with medium-coarse sand or excavated soil.
Further, in step S9, before constructing the end sealing structure at the top of the slope, the end of the light structural layer is wrapped with a geotextile at the upper part of the light structural layer. The upper end of the light structural layer is wrapped by the composite geotextile, so that the problem of infiltration of water at the upper part can be avoided.
Compared with the prior art, the invention has the beneficial effects that:
1. the light side slope framework structure adopts the cement blanket to wrap the light concrete precast block to form the light structural layer of the framework structure for side slope protection, the cement blanket to wrap the light concrete block can solve the problems of low durability and poor shearing resistance under the action of external force when the light concrete is influenced by water, has the characteristics of light weight, good durability, convenient construction, high construction efficiency, good economical efficiency and the like, can be used for protecting filled roadbed side slopes or non-expansive rock soil road cutting side slopes, and is not suitable for protecting slopes with large uneven deformation of the slopes; the cement blanket is light and flexible, has high strength and strong tensile resistance after being sprinkled and cured, can form structures with various shapes by sewing, and is flexible in construction; the stability between the cement blanket and the side slope soil body can be enhanced by adopting the U-shaped soil nails at the bottom of the foundation pit, so that the formed combined framework structure has better stability; the lightweight concrete blocks are connected by adopting the tandem connection rods and are fixed with the slope body through the reinforced soil nails, and the formed lightweight framework has good structural integrity and high stability; meanwhile, the upper end of the light structural layer is wrapped by the composite geotextile, so that the problem of infiltration of water at the upper part can be avoided.
2. According to the slope light skeleton structure, concrete or grouted rubble is used for building in the foundation pit triangular area to form an end head closed structure, so that the problem of irregular stress concentration of light concrete can be solved; the cement blanket is adopted to wrap the rectangular protruding section, and the rectangular protruding section is sewn with the cement blanket to form a water blocking edge structure, and the water blocking edge structure is flexibly connected with the framework structure, so that the water blocking edge structure is not easy to damage, the construction is simple and rapid, and the economy is good.
3. The construction method of the light side slope framework structure has the characteristics of convenience in construction, simplicity in operation, clear flow, good quality control, good economy, environmental friendliness, convenience in popularization and application and the like.
Description of the drawings:
FIG. 1 is a schematic cross-sectional view of a light-duty side slope framework structure of the present invention;
FIG. 2 is a schematic plan view of the light side slope skeletal structure of the present invention;
FIG. 3 is a schematic cross-sectional view taken along line I-I of FIG. 1;
FIG. 4 is a schematic sectional view taken along line II-II of FIG. 1;
FIG. 5 is an enlarged view of a portion of FIG. 2;
FIG. 6 is a flow chart of a construction method of the light side slope framework structure of the invention;
the labels in the figure are: 1-cement blanket layer, 2-U-shaped soil nails, 3-lightweight concrete blocks, 4-end sealing structure, 5-series rods, 6-reinforced soil nails, 7-water retaining edge structure and 8-side slope.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
Example 1
A construction method of a light skeleton structure of a side slope, as shown in fig. 1 to 5, the skeleton structure includes:
the light structural layer is arranged on the slope surface and comprises a plurality of light concrete blocks 3 and a cement blanket layer 1 wrapped outside the light concrete blocks 3, a serial rod 5 is arranged on each light concrete block 3, the serial rods 5 are longitudinally arranged along the slope surface of the slope, and the serial rods 5 on the adjacent light concrete blocks 3 are mutually connected; the longitudinal two sides of the light structural layer are provided with water retaining edge structures 7, and the water retaining edge structures 7 are arranged on the top surface of the light structural layer;
the reinforced soil nails 6 are arranged at the joints of the lightweight concrete blocks 3, the reinforced soil nails 6 are arranged in the side slope 8 along the slope surface at intervals, the lower ends of the reinforced soil nails 6 enter the stable layer of the side slope 8, and the top ends of the reinforced soil nails 6 are fixedly connected with the serially-connected rods 5.
The end sealing structure 4 is arranged at the bottom of the slope surface and the top of the slope surface, and the end sealing structure 4 is connected with the light structural layer;
as shown in fig. 6, the construction method includes the steps of:
s1, excavating a skeleton structure foundation pit on the side slope 8;
s2, building a triangular area at the bottom of the foundation pit by adopting concrete or masonry rubble to form an end sealing structure 4 at the bottom of the slope surface;
s3, leveling the bottom of the foundation pit, paving a prefabricated cement blanket with a water blocking edge structure 7 in the foundation pit, constructing U-shaped soil nails 2 at the bottom of the foundation pit with the cement blanket at intervals along the slope surface of the side slope in the longitudinal direction, and fixing the U-shaped soil nails 2 in the soil body of the side slope 8 through the cement blanket in the foundation pit;
s4, placing the prefabricated lightweight concrete blocks 3 on a cement blanket in the foundation pit from bottom to top, placing the serial rods 5 in the preformed holes of each prefabricated lightweight concrete block 3, and connecting the serial rods 5 on the adjacent lightweight concrete blocks 3;
s5, drilling holes at intervals in the slope along the connecting line of the serial rod 5 to construct reinforced soil nails 6;
s6, repeating the steps S4 to S5 until all the light concrete blocks 3, the tandem connecting rods 5 and the reinforced soil nails 6 are constructed;
s7, wrapping the lightweight concrete block 3 with a cement blanket with a water retaining edge structure in the foundation pit, and sewing the cement blanket at the position where the water retaining edge structure 7 is arranged;
s8, spraying water on the exposed cement blanket, and curing to form a light structural layer;
and S9, building a triangular area at the top of the foundation pit by adopting concrete or masonry rubble to form an end sealing structure 4 at the top of the slope surface.
It should be noted that the longitudinal direction of the slope surface refers to the up-down direction of the slope surface, and the transverse direction of the slope surface refers to the width direction of the slope surface. The triangular area at the bottom of the foundation pit is a triangular area formed by the bottom surface of the light-weight structure layer arranged along the foundation pit and the road surface at the bottom of the side slope 8, and the triangular area at the top of the foundation pit is a triangular area formed by the top surface of the light-weight structure layer arranged along the foundation pit and the road surface at the top of the side slope 8.
In this embodiment, the lightweight concrete block 3 needs to be prefabricated first, the cross-sectional width and thickness of the lightweight concrete block 3 are designed according to different framework structures, and a hollow preformed hole is formed in the center of the lightweight concrete block. In the construction process, the exposed cement blanket is firstly sprayed with water, namely the visible cement blanket on the side slope is sprayed with water, and the invisible cement blanket at the periphery of the foundation pit can be automatically solidified under the action of underground water or pore water to form a high-strength cement blanket layer.
In some embodiments, the lightweight concrete blocks 3 have a length of 0.3-0.5m and a width and thickness corresponding to the desired dimensions of the framework structure, as shown in fig. 2, in which each framework structure has a width of 0.6m and the lightweight concrete blocks 3 have a width of 0.6 m.
In this embodiment, the prepared hole of the lightweight concrete block 3 is disposed at the center of the lightweight concrete block 3, the center line of the prepared hole is longitudinally parallel to the slope surface, the serially-connected rods 5 on the adjacent lightweight concrete blocks 3 are connected with each other to form a serially-connected rod connecting line, and the serially-connected rod connecting line is longitudinally parallel to the slope surface, as shown in fig. 1. Furthermore, the aperture of the preformed hole of the lightweight concrete block 3 is 0.05-0.08 m.
In some embodiments, the width of the water-retaining rim structure 7 is 5-10cm and the height of the water-retaining rim structure 7 is 10-15 cm.
In this embodiment, the top surface of the end enclosure structure 4 at the slope bottom of the side slope 8 is flush with the top surface of the light structural layer, and the top surface of the end enclosure structure 4 at the slope top of the side slope 8 is flush with the road surface on the side slope 8.
In some embodiments, the water barrier rim structure 7 comprises a rectangular profile and a layer of cement blanket 1 wrapped around the rectangular profile. Furthermore, in step S3, the pre-manufactured cement blanket with the water retaining edge structure 7 is formed by sewing and connecting a rectangular section-wrapped cement blanket and a lightweight structural layer-wrapped cement blanket, that is, a cement blanket is used to wrap the rectangular section, and then the rectangular section is sewn with the lightweight structural layer-made cement blanket to obtain the cement blanket with the water retaining edge structure 7. In step S8, when water is sprayed on the lightweight concrete block 3 structure wrapped by the cement blanket, water is sprayed on the rectangular section-wrapped cement blanket, and the water blocking edge structure 7 is formed after solidification. Specifically, the rectangular section bar is made of PVC material.
In some embodiments, the width of the U-shaped soil nails 2 is 0.1-0.2m, and the distance between the U-shaped soil nails 2 arranged along the slope surface of the side slope at intervals is 1.0-2.0 m. Furthermore, the depth of the lower end of the U-shaped soil nail 2 entering the stable layer of the side slope 8 is not less than 0.3 m.
In some embodiments, the length of each section of the tandem bar 5 is not less than 2m, and the tandem bar 5 can be made of steel bars with the diameter of 20-28 mm. In step S4, the adjacent serial rods 5 are connected by electric welding.
In some embodiments, the cement blanket has a thickness of 1-2 cm.
In some embodiments, the reinforced soil nails 6 are arranged at intervals of 3-5m along the longitudinal direction of the slope surface of the slope, and the depth of the lower parts of the reinforced soil nails 6 entering the stable layer of the slope 8 is not less than 2 m. The reinforced soil nails 6 are reinforced by grouting reinforcing steel bars, the reinforced soil nails 6 are arranged at the joints of the adjacent lightweight concrete blocks 3, and the number of the spaced lightweight concrete blocks 3 is determined according to different setting intervals.
In some embodiments, cement mortar is used for masonry between adjacent precast lightweight concrete blocks 3 when the precast lightweight concrete blocks 3 are placed from bottom to top in step S4.
In some embodiments, in step S7, after the cement blanket is sewn, the gaps between the cement blanket and the sides of the foundation pit are filled with medium-coarse sand or excavated soil.
In some embodiments, in step S9, before constructing the end closure structure 4 at the top of the slope, the end of the lightweight structural layer is wrapped with a geotextile at the top of the lightweight structural layer. The upper end of the light structural layer is wrapped by the composite geotextile, so that the problem of infiltration of water at the upper part can be avoided.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A construction method of a light side slope framework structure is characterized in that the framework structure comprises the following steps:
the light structure layer is arranged on the slope surface of a side slope (8), the light structure layer comprises a plurality of light concrete blocks (3) and a cement blanket layer (1) wrapped outside the light concrete blocks (3), a series connection rod (5) is arranged in each light concrete block (3), the series connection rods (5) are longitudinally arranged along the slope surface of the side slope, and the series connection rods (5) on the adjacent light concrete blocks (3) are mutually connected; water retaining edge structures (7) are arranged on the two longitudinal sides of the light structural layer;
the reinforced soil nails (6) are arranged at the joint of the adjacent lightweight concrete blocks (3), the reinforced soil nails (6) are longitudinally arranged in the side slope (8) along the slope surface of the side slope at intervals, the lower ends of the reinforced soil nails (6) enter the stable layer of the side slope (8), and the top ends of the reinforced soil nails (6) are fixedly connected with the serially-connected rods (5);
the end sealing structure (4) is arranged at the bottom of the slope surface of the side slope (8) and the top of the slope surface of the side slope (8), and the end sealing structure (4) is connected with the light structure layer;
the construction method comprises the following steps:
s1, excavating the skeleton structure foundation pit on the side slope (8);
s2, constructing the end head closed structure (4) at the slope bottom of the side slope (8) in the triangular area at the bottom of the foundation pit;
s3, leveling the bottom of the foundation pit, paving a prefabricated cement blanket with a water blocking edge structure (7) in the foundation pit, constructing U-shaped soil nails (2) at intervals along the longitudinal side slope at the bottom of the foundation pit where the cement blanket is paved, and enabling the U-shaped soil nails (2) to penetrate through the cement blanket in the foundation pit and be fixed in the soil body of the side slope (8);
s4, placing prefabricated lightweight concrete blocks (3) on the cement blanket in the foundation pit from bottom to top, placing a series connection rod (5) in a preformed hole of each prefabricated lightweight concrete block (3), and connecting the series connection rods (5) on the adjacent lightweight concrete blocks (3);
s5, drilling to construct the reinforced soil nails (6);
s6, repeating the steps S4 to S5 until all the lightweight concrete blocks (3), the connecting rods (5) and the reinforcing soil nails (6) are constructed;
s7, wrapping the lightweight concrete block (3) with the cement blanket with the water retaining edge structure (7) in the foundation pit, and sewing the cement blanket at the position where the water retaining edge structure (7) is arranged;
s8, spraying water on the exposed cement blanket, and curing to form the light structural layer;
and S9, constructing an end sealing structure (4) at the top of the slope of the side slope (8) in the triangular area at the top of the foundation pit.
2. The construction method of the light side slope skeleton structure according to claim 1, wherein the length of the lightweight concrete block (3) is 0.3-0.5m, and the diameter of the preformed hole of the prefabricated lightweight concrete block (3) is 0.05-0.08 m.
3. The construction method of a light-duty framework structure of side slopes according to claim 1, wherein the width of the water retaining rim structure (7) is 5-10cm, and the height of the water retaining rim structure (7) is 10-15 cm.
4. The construction method of the light side slope framework structure according to claim 3, wherein the water retaining edge structure (7) comprises a rectangular section and a cement blanket layer (1) wrapped outside the rectangular section; in step S3, the prefabricated cement blanket with water-blocking edge structure (7) is formed by sewing and connecting the rectangular-section-wrapped cement blanket and the lightweight-structure-layer cement blanket.
5. The construction method of the side slope light skeleton structure according to claim 1, wherein the width of the U-shaped soil nails (2) is 0.1-0.2m, the distance between the U-shaped soil nails (2) longitudinally arranged along the slope surface of the side slope is 1.0-2.0m, and the depth of the lower ends of the U-shaped soil nails (2) entering the stable layer of the side slope (8) is not less than 0.3 m.
6. The construction method of the light side slope framework structure according to claim 1, wherein the length of each section of the connecting rod (5) is not less than 2m, and the connecting rod (5) can be made of steel bars with the diameter of 20-28 mm.
7. The construction method of the side slope light skeleton structure according to claim 1, wherein the reinforced soil nails (6) are arranged along the longitudinal direction of the slope surface of the side slope at intervals of 3-5m, and the depth of the lower parts of the reinforced soil nails (6) entering the stable layer of the side slope (8) is not less than 2 m.
8. The construction method of a light skeletal structure of side slopes according to any one of claims 1 to 7, wherein in step S4, when the precast lightweight concrete blocks (3) are placed from bottom to top, cement mortar is used for building between adjacent precast lightweight concrete blocks (3).
9. The construction method of a light skeleton structure of side slopes according to any one of claims 1 to 7, wherein in step S7, after the cement blanket is sewn, the gaps between the cement blanket and the sides of the foundation pit are filled with medium-coarse sand or excavated soil.
10. The construction method of the light side slope skeleton structure according to any one of claims 1-7, wherein in step S9, before constructing the end closure structure (4) on the top of the slope surface of the side slope (8), the end of the light structural layer is wrapped with a geotextile on the upper part of the light structural layer.
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| CN114687364A (en) * | 2022-03-30 | 2022-07-01 | 三峡大学 | Soft ladder type ecological slope protection structure for adverse slope in cold and arid regions and construction method |
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| CN213267941U (en) * | 2020-08-31 | 2021-05-25 | 天津市冀水工程咨询中心 | Slope reinforcing structure of composite function cement blanket |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114687364A (en) * | 2022-03-30 | 2022-07-01 | 三峡大学 | Soft ladder type ecological slope protection structure for adverse slope in cold and arid regions and construction method |
| CN114687364B (en) * | 2022-03-30 | 2023-09-15 | 三峡大学 | Soft ladder type ecological slope protection structure for counter slope in cold and dry areas and construction method |
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| CN113982002B (en) | 2022-11-18 |
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