CN-121992749-A - Bush structure and construction method

CN121992749ACN 121992749 ACN121992749 ACN 121992749ACN-121992749-A

Abstract

The application relates to a lapel structure and a construction method, which are buried in the soil body of a river bank or a side slope when in use. The rigid retaining wall unit of the main body section of the lapel is used as a stress structure, at least one layer of the grouted block stone retaining wall can effectively resist the lateral pressure of soil body behind the wall, and the bearing foundation layer arranged at the bottom of the retaining wall unit can uniformly transfer the load on the upper part to the foundation, so that the overall stability of the structure is enhanced. Meanwhile, the slope protection section arranged on the first side of the main body section of the lapel is flush with the top of the rigid retaining wall unit, a flat top edge is formed, and the rigid retaining wall unit can be reinforced and protected through the structure reinforcing layer. The ecological section arranged on the second side of the main body section of the lapel, and the design of the seepage-proofing transition layer, the planting matrix layer and the ecological perching layer provide space for the growth of aquatic plants and the perching of organisms. Through the functional partition layout in the horizontal direction, the lapel structure has good ecological compatibility while guaranteeing the structural shear strength.

Inventors

SUN YUXUAN
ZHANG FANG
WANG PENG
WEN ZHENMING
ZHU XIAOJIE

Assignees

中冶北方（大连）工程技术有限公司

Dates

Publication Date: 20260508
Application Date: 20260302

Claims (10)

1. The refute bank structure is characterized by comprising a slope protection section, a refute bank main body section and an ecological section, wherein the slope protection section comprises a structure strengthening layer, an adhesive layer and a hard surface layer which are paved in sequence from bottom to top along the vertical direction, the refute bank main body section comprises a rigid retaining wall unit and a bearing foundation layer arranged at the bottom of the rigid retaining wall unit, the rigid retaining wall unit comprises at least one layer of serous block stone retaining wall, and the ecological section comprises an impermeable transition layer, a planting matrix layer and an ecological perching layer which are paved in sequence from bottom to top along the vertical direction; Wherein, along the horizontal direction, the bank protection section set up in refute the first side of bank main part section, ecological section set up in refute the second side of bank main part section, along vertical direction, hard surface layer with the top of rigidity retaining wall unit flushes.
2. The lapel structure of claim 1, wherein the hard surface layer is a granite boast surface layer, the bonding layer is a cement mortar layer, the structure reinforcing layer comprises a concrete layer, a two-ash-gravel layer and a gray soil layer which are sequentially arranged from top to bottom in the vertical direction, and a plain soil tamping foundation is arranged below the gray soil layer.
3. The lapel structure according to claim 2, wherein the cement mortar layer is cement mortar with a strength grade of 10mpa, the thickness of the cement mortar layer is 30 mm, the concrete layer is concrete with a cube compressive strength standard value of 30 mpa, the thickness of the concrete layer is 150 mm, the thickness of the two-ash-gravel layer is 200 mm, the volume ratio of lime to soil in the ash layer is 1:9, the thickness of the ash layer is 200 mm, and the compactness of the ash layer is more than or equal to 95%.
4. The lapel structure according to claim 1, wherein the bearing foundation layer comprises a crushed stone cushion layer and a concrete leveling layer which are sequentially arranged from bottom to top in a vertical direction, and the rigid retaining wall unit comprises a grouted block stone placing foot arranged above the concrete leveling layer, a first grouted block stone retaining wall arranged on the grouted block stone placing foot, a first flexible waterproof layer arranged on the first grouted block stone retaining wall, and a second grouted block stone retaining wall arranged on the first flexible waterproof layer.
5. The lapel structure of claim 4, wherein the first and second grouted block retaining walls are each built of a block having an average compressive strength of 20 mpa and a cement mortar having a strength level of 10 mpa, and the mortar joint has a thickness in the range of 20 to 30 mm; The extending direction of the wall body of the first grouted block stone retaining wall and the extending direction of the wall body of the second grouted block stone retaining wall are horizontal, expansion joints are arranged on the first grouted block stone retaining wall and the second grouted block stone retaining wall every 2 meters along the horizontal direction, the joint width of each expansion joint is 20 millimeters, and asphalt wood plates are filled in the joints of each expansion joint; The first flexible waterproof layer is a bentonite waterproof pad, and the unit area mass is more than or equal to 4000g/m < 2 >.
6. The lapel structure according to claim 1, wherein the impermeable transition layer comprises a second flexible waterproof layer and a first clay ramming layer which are sequentially arranged from top to bottom in the vertical direction, the planting substrate layer is a second clay ramming layer, and the ecological perching layer is a brook layer scattered on the planting substrate layer.
7. The lapel structure of claim 6, wherein the second flexible waterproof layer is a bentonite waterproof pad, the thickness of the first clay rammed layer is 200 mm, the thickness of the second clay rammed layer is 200 mm, the compactness is not less than 90%, the stone layer is a stone with a particle size of 150-200 mm, and the spreading thickness of the stone is not less than 150 mm.
8. A method of constructing a lapel structure as claimed in any one of claims 1 to 7, comprising the steps of: S1, excavating a foundation trench to a designed elevation, and tamping a substrate; s2, constructing a bearing foundation layer of the main body section of the lapel in a first area in the foundation trench; s3, constructing a rigid retaining wall unit on the bearing foundation layer, wherein the construction comprises the steps of building at least one layer of grouted block stone retaining wall; s4, constructing an ecological section in a second area in the foundation trench, wherein the second area is positioned at the second side of the main body section of the lapel, and constructing the ecological section comprises paving an impermeable transition layer, a planting substrate layer and an ecological perching layer in sequence; S5, constructing a slope protection section in a third area in the foundation trench, wherein the third area is positioned on the first side of the main body section of the lapel, and constructing the slope protection section comprises sequentially paving a structural reinforcement layer, a bonding layer and a hard surface layer, and enabling the hard surface layer to be flush with the top of the rigid retaining wall unit.
9. The construction method according to claim 8, wherein in step S2, the load-bearing foundation layer comprises a gravel cushion layer and a concrete leveling layer laid in sequence from bottom to top; In step S3, the rigid retaining wall unit includes a grouted block stone placement foot disposed on the concrete leveling layer, a first grouted block stone retaining wall disposed on the grouted block stone placement foot, a first flexible waterproof layer disposed on the first grouted block stone retaining wall, and a second grouted block stone retaining wall disposed on the first flexible waterproof layer; In step S4, the seepage-proofing transition layer comprises a second flexible waterproof layer and a first clay rammed layer which are paved from bottom to top in sequence, the planting substrate layer is a second clay rammed layer, and the ecological perching layer is a scattered stone layer.
10. The construction method according to claim 8, wherein in step S5, the structural reinforcement layer comprises a lime soil layer, a two-lime stone layer and a concrete layer which are sequentially paved from bottom to top, the bonding layer is a cement mortar layer, and the hard surface layer is a granite boast surface layer; curing for at least 7 days after pouring the concrete layer, and carrying out surface roughening treatment; The granite boast surface layer is pre-soaked for 24 hours before being installed, a gap is reserved between the plates for 5mm, and the plates are hooked by same-color mortar.

Description

Bush structure and construction method Technical Field The application relates to the technical field of bank slope protection, in particular to a lapel structure and a construction method. Background The grout masonry stone barge ridge is used as a traditional bank slope protection structure, and is widely applied due to the fact that the grout masonry stone barge ridge is convenient to obtain materials and simple to construct. However, the conventional grout masonry stone barge sill adopts a single-layer masonry structure, and mainly relies on self gravity to maintain stable soil retaining. In practical application, the single-layer masonry structure is affected by multiple factors such as soil lateral pressure, uneven settlement of a foundation, water flow scouring and the like, and the single-layer masonry structure often has the inherent defect of insufficient shear strength, so that the wall is extremely easy to generate through cracks. The crack not only damages the structural integrity, but also becomes a leakage channel, which leads to soil loss behind the wall and increase of wall back water pressure, and even causes inclination or collapse of the lapel under severe conditions. In addition, the traditional structure adopts fully-hardened closed masonry for pursuing structural safety, so that the material energy exchange between the water body and the land is completely blocked, and the ecological function is lost. Therefore, how to improve the shear strength of the lapel structure and make the lapel structure have ecological compatibility is a technical problem that needs to be solved by those skilled in the art at present. Disclosure of Invention The application provides a lapel structure and a construction method thereof, which are used for improving the shear strength of the lapel structure and enabling the lapel structure to have ecological compatibility. In order to achieve the above object, the present invention provides the following technical solutions: The revetment section comprises a structure strengthening layer, an adhesive layer and a hard surface layer which are paved in sequence from bottom to top in the vertical direction, the revetment section comprises a rigid retaining wall unit and a bearing foundation layer arranged at the bottom of the rigid retaining wall unit, the rigid retaining wall unit comprises at least one layer of slurry block stone retaining wall, and the ecological section comprises an impermeable transition layer, a planting matrix layer and an ecological perching layer which are paved in sequence from bottom to top in the vertical direction; Wherein, along the horizontal direction, the bank protection section set up in refute the first side of bank main part section, ecological section set up in refute the second side of bank main part section, along vertical direction, hard surface layer with the top of rigidity retaining wall unit flushes. Optionally, in the lapel structure, the hard surface layer is a granite boast surface layer, the bonding layer is a cement mortar layer, the structure reinforcing layer comprises a concrete layer, a two-ash stone layer and a gray soil layer which are sequentially arranged from top to bottom in the vertical direction, and a plain soil ramming foundation is arranged below the gray soil layer. Optionally, in the lapel structure, the cement mortar layer is cement mortar with the strength grade of 10 megapascals, the thickness of the cement mortar layer is 30 millimeters, the concrete layer is concrete with the cube compressive strength standard value of 30 megapascals, the thickness of the concrete layer is 150 millimeters, the thickness of the two-ash-gravel layer is 200 millimeters, the volume ratio of lime to soil in the ash layer is 1:9, the thickness of the ash layer is 200 millimeters, and the compactness of the ash layer is more than or equal to 95%. Optionally, in the above-mentioned lapel structure, the bearing foundation layer comprises a crushed stone cushion layer and a concrete leveling layer which are sequentially arranged from bottom to top along the vertical direction, and the rigid retaining wall unit comprises a grouted block stone laying foot arranged above the concrete leveling layer, a first grouted block stone retaining wall arranged on the grouted block stone laying foot, a first flexible waterproof layer arranged on the first grouted block stone retaining wall, and a second grouted block stone retaining wall arranged on the first flexible waterproof layer. Optionally, in the lapel structure, the first grouted block stone retaining wall and the second grouted block stone retaining wall are built by adopting block stones with the average compressive strength of 20 megapascals and cement mortar with the strength grade of 10 megapascals, and the thickness range of mortar joints is 20-30 millimeters; The extending direction of the wall body of the first grouted block stone retaining wall and the extending dire