CN110820801A - Reverse-wrapping type waste tire reinforced retaining wall and construction method thereof - Google Patents
Reverse-wrapping type waste tire reinforced retaining wall and construction method thereof Download PDFInfo
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- CN110820801A CN110820801A CN201911256971.1A CN201911256971A CN110820801A CN 110820801 A CN110820801 A CN 110820801A CN 201911256971 A CN201911256971 A CN 201911256971A CN 110820801 A CN110820801 A CN 110820801A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
- E02D29/0258—Retaining or protecting walls characterised by constructional features
- E02D29/0283—Retaining or protecting walls characterised by constructional features of mixed type
Abstract
The invention discloses a back-wrapping type waste tire reinforced retaining wall and a construction method thereof, wherein the retaining wall comprises a waste tire, a wall bottom plate, a geogrid, a connecting sheet, a self-locking nylon tie net sheet, a temporary baffle and a backfill material; the waste tires are horizontally laid and vertically staggered and stacked, the bottom surfaces and the top surfaces of the tires are provided with reserved holes, and adjacent tires are connected through connecting sheets to form a tire wall; paving tires in the grooves on the surface of the wall bottom plate, filling backfill and rolling to compact; the geogrid comprises a reinforced geogrid and a back-covered geogrid. The construction method comprises the following steps: preparing a component; excavating earth; constructing a foundation; laying a reinforced geogrid; laying a bag returning geogrid and a first layer of waste tires on the upper part; laying a second layer of waste tires on the upper part, and backfilling backfill materials in the tires; laying a bag returning geogrid; arranging a temporary baffle; backfill materials are filled behind the wall; repeating until reaching the designed height. The invention can reduce the environmental pollution caused by waste tires and reduce the engineering cost.
Description
Technical Field
The invention relates to the field of reinforcement, in particular to a repackaging type waste tire reinforced retaining wall and a construction method thereof.
Background
In recent years, the waste tires produced each year in China are the first in the world for many years, and the number of the waste tires produced each year is rapidly increasing. The waste tires are stacked in the open air for a long time, so that a large amount of land resources are occupied, mosquitoes are easy to breed to spread diseases, the natural environment is deteriorated, fire disasters are possibly caused, the life and property safety of people is threatened, and how to change waste into valuable is the biggest challenge faced by people.
At present, the domestic main mode of recycling the waste tires is to use the waste tires as fuel, but the resource utilization rate is not high, and secondary pollution can be caused by carelessness in the running process. In engineering, the waste tires are mainly utilized by mixing tire particles or cut tire strips into soil to improve the mechanical property of soil, but volatile pollutants are generated in the process of grinding tires into particles, and the process of cutting the waste tires into strips also increases the engineering cost. The Chinese patent with the application number of 201811078560.3 discloses a retaining wall and a construction method thereof, tires are staggered and stacked and connected through steel wires to form a tire wall, the construction of the retaining wall is simple and easy to implement, but the tires are connected through the steel wires only in a binding mode, so that the rigidity and integrity of the tire wall are extremely low, the retaining wall is not provided with a foundation, and the tire wall does not have the anti-overturning performance.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention aims to provide the back-wrapped type waste tire reinforced retaining wall with high rigidity and good stability.
The technical scheme is as follows: the invention relates to a back-packaging type geogrid reinforced earth retaining wall which comprises waste tires, a wall bottom plate, geogrids, connecting sheets, self-locking nylon tie meshes, temporary baffles and backfill materials, wherein the waste tires are arranged on the wall bottom plate; the waste tires are horizontally paved and vertically staggered and stacked, the bottom surfaces and the top surfaces of the waste tires are provided with reserved holes, and adjacent waste tires are connected through connecting sheets to form a tire wall; the surface of the wall bottom plate is provided with a groove, waste tires are laid in the groove, and backfill materials are filled and rolled compactly; the geogrid comprises a reinforced geogrid and a back-wrapped geogrid; the geogrid is horizontally laid in the backfill material, waste tires are wrapped again, and the reinforced geogrid and the wrap-back geogrid are connected through the self-locking nylon tie net sheets; the connecting sheet is used for connecting adjacent waste tires and geogrids; the temporary baffle plays a role of temporarily fixing the retaining wall when the waste tires are laid and the backfill material is filled, and the backfill material is backfilled in the waste tires and behind the tire walls in a layered mode and is compacted through rolling.
In order to ensure that the waste tire retaining wall has enough rigidity, strength and stability, the radius of the waste tire is not less than 320mm, the section width is not less than 215mm, the number of the reserved holes on the bottom surface and the top surface of the waste tire is 8, and the diameter of each reserved hole is 4-6 mm.
The wall bottom plate is prefabricated component, and in order to improve the antidumping performance and the construction of being convenient for of junked tire barricade, the section width of wall bottom plate recess is greater than 20 ~ 40mm of junked tire's diameter, and height h is 2t +150mm, and wherein t is junked tire's section width. The geogrid is a high-density polyethylene bidirectional geogrid added with 2% of corrosion-resistant carbon black with the grain size of 15nm-25 nm.
The connecting piece comprises a main connecting piece, a screw, a nut and a washer which are all made of cold heading steel. The main connecting piece is provided with 8 screw holes which are uniformly distributed on the upper flange and the lower flange. The screw is a self-extruding self-tapping screw, the nominal radius is 4 mm-6 mm, and the length is 500 mm-700 mm. The performance grade of the nut is 4.8-5.6, and the performance grade of the screw is 3.6-4.6.
The length of the self-locking nylon cable tie net sheet is 800 mm-1000 mm, and the width of the self-locking nylon cable tie net sheet is 500 mm-800 mm more than that of the geogrid. The self-locking nylon cable tie mesh is made of PA66, and the unit grid of the mesh comprises nylon cable ties and crisscross ribs. The nylon cable ties are positioned on the nodes of the crossed ribs, the width of each nylon cable tie is 2-3 mm, and the length of each nylon cable tie is 8-12 mm. The side length of the unit grid of the self-locking nylon ribbon mesh is 4-5 times of that of the unit grid of the geogrid.
The temporary baffle is a steel plate or a wood plate, clings to the front end of the retaining wall and plays a role in temporary supporting.
The construction method of the retaining wall comprises the following steps:
a. preparing a component: prefabricating a wall bottom plate according to the specification of the used waste tire, reserving holes on the bottom surface and the top surface of the waste tire, and cutting a geogrid and a self-locking nylon cable tie net piece according to the design;
b. earth excavation: carrying out earth excavation according to a design drawing;
c. foundation construction: the wall bottom plate is lifted to the designed elevation, after the first layer of junked tires of the foundation are laid in the grooves of the wall bottom plate, the bottoms of the first layer of junked tires of the foundation are connected by the connecting sheets, then filling backfill materials in the grooves, compacting by vibration and rolling, backfilling to a position 30-50 mm away from the top surface of the first layer of the waste tire, then laying a second layer of basic waste tires, wherein the second layer of basic waste tires and the first layer of basic waste tires are vertically staggered, mounting a connecting sheet at the joint of the bottom surface of the second layer of the waste tires and the top surface of the first layer of the waste tires to integrally connect the first layer of the waste tires and the second layer of the waste tires, then filling backfill materials in the grooves, compacting by vibration and rolling, backfilling to a position 30-50 mm away from the top surface of the second layer of the basic waste tire, reserving a connecting sheet on the top surface of the second layer of the basic waste tire, and filling backfill materials to the designed elevation of the terrace;
d. laying a reinforced geogrid: leveling the geogrid before laying, reserving the laying length of the re-wrapped geogrid, wherein the width of the geogrid is 5D-8D, D is the diameter of a waste tire, and the reinforced geogrid is laid firstly, is vertical to the height of a wall when laid, and is 0.7H-1.2H after the wall, and H is the height of the wall;
e. laying a bag returning geogrid and a first layer of waste tires on the upper part: the reserved length of the reverse packaging geogrid is 4D +4t +500mm, D and t are the diameter and the section width of the waste tire respectively, the first layer of waste tire on the upper portion is laid on the reserved reverse packaging geogrid, the first layer of waste tire on the upper portion and the second layer of waste tire on the base are vertically arranged in a staggered mode, and the second layer of waste tire on the base, the reverse packaging geogrid and the first layer of waste tire on the upper portion are connected through reserved connecting sheets;
f. laying an upper second layer of waste tires and backfilling backfill materials in the waste tires: filling backfill materials in a first layer of waste tires on the upper portion, backfilling to a position 30-50 mm away from the top surface of the first layer of waste tires on the upper portion, then laying a second layer of waste tires on the upper portion, vertically and alternately arranging the second layer of waste tires on the upper portion and the first layer of waste tires on the upper portion, installing connecting sheets at the connecting positions of the bottom surfaces of the second layer of waste tires on the base and the top surfaces of the first layer of waste tires on the base, connecting the first layer of waste tires on the upper portion and the second layer of waste tires on the upper portion into a whole, filling backfill materials in the second layer of waste tires on the upper portion, backfilling to a position 30-50 mm away from the top surface of the second layer of waste tires on the upper portion, reserving connecting sheets on the top surface of the second layer of waste tires on;
g. laying a bag returning geogrid: wrapping the peripheries of a first layer of waste tires on the upper part and a second layer of waste tires on the upper part by using a back-wrapping geogrid, wherein the bottom surface of the first layer of waste tires on the upper part is marked at a height, the back-wrapping geogrid is laid horizontally and is adhered to the reinforced geogrid, connecting the back-wrapping geogrid and the reinforced geogrid by using a self-locking nylon ribbon mesh, applying a pulling force to the tail end of the reinforced geogrid, fixing the tail end of the reinforced geogrid in a soil body by using pins after the reinforced geogrid is tightened, and connecting the geogrids adjacent in the horizontal direction by using a self-locking nylon ribbon;
h. arranging a temporary baffle: the temporary baffle is arranged at the front end of the retaining wall and is tightly attached to the tire wall, so that the tire wall is prevented from relatively large displacement when backfill is filled behind the tire wall;
i. backfill material filling behind the wall: filling backfill material to the top surface of the second layer of waste tires at the upper part behind the wall, and vibrating and rolling to compact the waste tires;
j. and (e) repeating the steps (d) to (i) until the wall reaches the design height.
The working principle is as follows: the waste tires are firmly connected together through the connecting sheets with higher strength and corrosion resistance, and the waste tires are wrapped back through the geogrids, and the tire wall is pulled due to the friction force between the ribs and the soil, so that the pressure borne by the tire wall can be offset, and the horizontal deformation of the tire wall is further reduced; the tread of the waste tire has a strong lateral constraint effect on the soil body, the side surface of the tire has a certain constraint effect on the soil body, and the horizontal deformation caused by lateral soil pressure is weakened by the friction effect between the side surfaces of the tire; the structural form can obviously improve the integrity and rigidity of the retaining wall, and the retaining wall can bear larger shearing force and bending moment and has good anti-seismic performance.
Has the advantages that: compared with the prior art, the invention has the following remarkable characteristics:
1. the waste tires are used as the retaining wall, so that the problem of accumulation of a large number of waste tires can be solved, the pollution of the waste tires to the environment is reduced, and the engineering cost can be greatly reduced;
2. the geogrid wraps the waste tires again, and the wrapped geogrid is connected with the reinforced geogrid through the self-locking nylon ribbon meshes, so that the rigidity and the stability of the tire retaining wall can be improved remarkably;
3. the components such as the wall bottom plate and the like are prefabricated components or components which can be processed in advance, the construction is simple and easy, the construction efficiency is improved, the occupied area is small, and the influence of the construction on the environment is small;
4. the waste tires and the geogrids are light in texture, low in price and good in physical and mechanical properties, and are good engineering building materials;
5. the adjacent tires are firmly connected together through the connecting sheet, so that the rigidity and stability of the tire retaining wall are greatly improved, and the construction is simple and easy;
6. the anti-overturning force of the tire wall can be obviously improved by arranging the wall bottom plate, the foundation settlement is reduced, and the stability of the retaining wall is improved.
Drawings
FIG. 1 is a perspective view of the present invention;
fig. 2 is a schematic structural view of the geogrid 3 of the present invention for wrapping the waste tires 1 again;
fig. 3 is a schematic view of the construction of a used tire 1 of the present invention;
FIG. 4 is a schematic view of the construction of the wall baseplate 2 of the present invention;
FIG. 5 is a schematic view of the structure of the connecting piece 4 of the present invention;
FIG. 6 is a schematic structural view of a self-extruding self-tapping screw 402 of the present invention
Fig. 7 is a schematic view of the connection of the same layer of used tyres 1 according to the invention;
FIG. 8 is a schematic view showing the connection of the different-layer used tire 1 of the present invention;
fig. 9 is a schematic view of the connection of adjacent waste tires 1 in the same back-packed geogrid layer according to the invention;
fig. 10 is a schematic view of the connection of the reinforced geogrid 301 and the back wrap geogrid 302 of the present invention;
FIG. 11 is a schematic structural view of the self-locking nylon cable tie web 5 of the present invention;
FIG. 12 is a schematic structural view of a unit cell of the self-locking nylon cable tie web 5 of the present invention;
fig. 13 is a schematic structural view of the temporary stopping plate 6 support of the present invention.
Detailed Description
The directions shown in the drawings of the specification are up, down, left and right.
As shown in fig. 1-2, the waste tires 1 are horizontally laid and vertically staggered and stacked, and the adjacent waste tires 1 are connected through the connecting sheet 4 to form a tire wall. Two layers of waste tires 1 are laid in the groove 204 of the wall bottom plate 2, and are filled with backfill materials 7 and compacted by rolling. The geogrid 3 is horizontally laid in the backfill material 7 and wraps the waste tire 1 again. The reinforced geogrid 301 and the back wrap geogrid 302 are connected through self-locking nylon tie mesh sheets 5. And backfilling the backfill material 7 in the waste tire and behind the tire wall in layers, and rolling and compacting. Every two layers of waste tires 1 are wrapped with one layer of wrap-back geogrids 302, and the reinforced geogrid 301 and the wrap-back geogrid 302 are integral geogrids 3.
The width of the geogrid 3 is 5D-8D, D is the diameter of the waste tire 1, the laying length of the reinforced geogrid (3-1) behind a wall is 0.7H-1.2H, and H is the height of the wall. The geogrid 3 is a high-density polyethylene bidirectional geogrid added with 2% of corrosion-resistant carbon black with the grain size of 15nm-25 nm. The material used by the self-locking nylon cable tie mesh 5 is PA66 new material, and the self-locking nylon cable tie mesh 5 consists of unit grids which consist of nylon cable ties 501 and cross ribs 502. For convenience of construction, the length of the self-locking nylon cable tie net 5 is 800 mm-1000 mm, the width of the self-locking nylon cable tie net is 500 mm-800 mm more than that of the geogrid 3, the side length of each unit grid is 4-5 times of that of the unit grid of the geogrid 3, the nylon cable tie 501 is located on the node of the crossed rib 502 in each unit grid, the width of the nylon cable tie 501 is 2 mm-3 mm, and the length of the nylon cable tie 501 is 8 mm-12 mm.
As shown in fig. 3, the top and bottom surfaces of the used tire 1 are provided with 8 prepared holes 8 to be connected to the connecting sheet 4. The radius of the waste tire 1 is not less than 320mm, and the section width is not less than 215 mm.
As shown in fig. 4, in order to improve the anti-overturning performance of the waste tire retaining wall and facilitate construction, the wall bottom plate 2 comprises a wall heel 201, a wall toe 202, a tenon 203 and a groove 204. The width of the wall bottom plate 2 is 3D-5D, the length of the wall heel 201 is determined according to the anti-skid stability checking calculation of the wall body, and the thickness is 1/18H-1/16H. The length of the wall toe 202 is 1/9H-1/6H, and the thickness is 1/18H-1/16H. The width of the section of the tenon 203 is 20mm larger than the diameter of the waste tire 1, and the height is determined according to the antiskid stability checking calculation of the wall body. The section width of the groove 204 is 20-40 mm larger than the diameter of the waste tire 1, and the height h of the groove 204 is 2t +150mm (t is the section width of the waste tire).
As shown in FIG. 5, 4 prepared holes 8 with diameters of 4 mm-6 mm are also arranged on the surface of the connecting sheet 4.
As shown in fig. 6, the connecting piece 4 is composed of a main connecting piece 401, a screw 402, a nut 403 and a washer 404, and is used for connecting the adjacent waste tires 1 and the geogrid 3, and the used material is cold heading steel. The screw 402 is a self-extruding self-tapping screw having a nominal diameter of 4mm to 6mm and a length of 500mm to 700 mm. The performance rating of the nut 403 is one step higher than the performance rating of the screw 402.
Referring to fig. 7-13, the construction method of the retaining wall specifically includes the following steps:
step 3, foundation construction: hanging a wall bottom plate 2 to a design elevation, laying a first layer of basic waste tires (1) in a groove 204 of the wall bottom plate 2, connecting the bottom surfaces of the first layer of basic waste tires (1) by a connecting sheet 4, filling backfill 7 in the groove 204, vibrating, rolling and compacting, backfilling to a position 30-50 mm away from the top surface of the first layer of basic waste tires (1), laying a second layer of basic waste tires (1), vertically and alternately arranging the second layer of basic waste tires (1) and the first layer of basic waste tires (1), installing the connecting sheet 4 at the connecting position of the top surfaces of the first layer of basic waste tires (1) and the bottom surfaces of the second layer of basic waste tires (1), connecting the first layer of basic waste tires (1) and the second layer of basic waste tires (1) into a whole, filling the backfill 7 in the groove 204, vibrating, rolling and compacting, backfilling to a position 30-50 mm away from the top surfaces of the second layer of basic waste, reserving a connecting sheet 4 on the top surface of the second layer of the basic waste tire 1, and then filling backfill materials 7 to the designed elevation of the terrace;
step 6, paving an upper second layer of waste tires 1 and filling backfill 7 in the waste tires 1: filling backfill 7 in a first upper layer of waste tires 1, backfilling to a position 30-50 mm away from the top surface of the first upper layer of waste tires 1, laying a second upper layer of waste tires 1, vertically and alternately arranging the second upper layer of waste tires 1 and the first upper layer of waste tires 1, installing a connecting sheet 4 at the connecting position between the top surface of the first upper layer of waste tires 1 and the bottom surface of the second upper layer of waste tires 1, connecting the first upper layer of waste tires 1 and the second upper layer of waste tires 1 into a whole, filling backfill 7 in the second upper layer of waste tires 1, backfilling to a position 30-50 mm away from the top surface of the second upper layer of waste tires 1, reserving the connecting sheet 4 on the top surface of the second upper layer of waste tires 1, and filling backfill 7 to the top surface of the second upper layer of waste tires 1;
step 9, filling the wall back backfill 7: filling backfill materials 7 behind the wall to the top surface of the second layer of the waste tire 1 at the upper part, backfilling layer by layer according to the principle of firstly two sides and then middle, and vibrating and rolling to compact;
and 10, repeating the steps 4-9 until the wall reaches the design height.
Claims (10)
1. The utility model provides a return packet mode junked tire reinforced earth retaining wall which characterized in that: the building material is characterized by comprising waste tires (1), a wall bottom plate (2), a geogrid (3), connecting sheets (4), self-locking nylon tie meshes (5), temporary baffles (6) and backfill materials (7); the waste tires (1) are horizontally laid and vertically staggered and stacked, the bottom surfaces and the top surfaces of the waste tires are provided with reserved holes (8), and adjacent waste tires (1) are connected through connecting sheets (4) to form a tire wall; the surface of the wall bottom plate (2) is provided with a groove (204), the groove (204) is internally paved with a waste tire (1), and a backfill material (7) is filled and rolled compactly; the geogrid (3) comprises a reinforced geogrid (301) and a back-wrapped geogrid (302); the geogrid (3) is horizontally laid in the backfill material (7) and wraps the waste tires (1) again, and the reinforced geogrid (301) and the wrap-back geogrid (302) are connected through the self-locking nylon tie mesh (5); the connecting sheet (4) is used for connecting the adjacent waste tires (1) and the geogrids (3); the temporary baffle (6) plays a role of temporarily fixing the retaining wall when the waste tires are laid and the backfill material is filled.
2. The repackaged type used tire reinforced retaining wall as claimed in claim 1, wherein: the number of the preformed holes (8) on the bottom surface and the top surface of the waste tire (1) is 8, and the diameter of each preformed hole (8) is 4-6 mm.
3. The repackaged type used tire reinforced retaining wall as claimed in claim 1, wherein: the section width of the groove (204) is 20-40 mm larger than the diameter of the waste tire (1), the height h is 2t +150mm, and t is the section width of the waste tire.
4. The repackaged type used tire reinforced retaining wall as claimed in claim 1, wherein: the connecting piece (4) comprises a main connecting piece (401), a screw (402), a nut (403) and a washer (404) which are all made of cold heading steel.
5. The repackaged type used tire reinforced retaining wall as claimed in claim 4, wherein: the main connecting sheet (401) is provided with screw holes which are uniformly distributed on the upper flange and the lower flange.
6. The repackaged type used tire reinforced retaining wall as claimed in claim 1, wherein: the length of the self-locking nylon cable tie mesh (5) is 800 mm-1000 mm, and the width of the self-locking nylon cable tie mesh is 500 mm-800 mm more than that of the geogrid (3).
7. The repackaged type used tire reinforced retaining wall as claimed in claim 6, wherein: the self-locking nylon cable tie mesh (5) is made of PA66, and the unit grid of the mesh comprises nylon cable ties (501) and crisscross ribs (502).
8. The repackaged type used tire reinforced retaining wall as claimed in claim 7, wherein: the nylon cable tie (501) is positioned on the nodes of the crossed ribs (502), the width of the nylon cable tie (501) is 2 mm-3 mm, and the length of the nylon cable tie (501) is 8 mm-12 mm.
9. The repackaged type used tire reinforced retaining wall as claimed in claim 8, wherein: the side length of the unit grid of the self-locking nylon cable tie mesh (5) is 4-5 times of that of the unit grid of the geogrid (3).
10. A construction method of a back-wrapped reinforced retaining wall made of waste tires is characterized by comprising the following steps:
(a) preparing a component: prefabricating a wall bottom plate (2), arranging reserved holes (8) on the bottom surface and the top surface of a waste tire (1), and cutting a geogrid (3) and a self-locking nylon cable tie net piece (5);
(b) earth excavation: carrying out earth excavation according to a design drawing;
(c) foundation construction: laying a basic first layer of waste tires (1) in a groove (204) of a wall bottom plate (2), connecting the bottoms of adjacent basic first layer of waste tires (1) by a connecting sheet (4), then filling backfill materials (7) in the groove (204), vibrating and rolling to be dense, backfilling to a position 30-50 mm away from the top surface of the basic first layer of waste tires (1), then laying a basic second layer of waste tires (1), vertically and alternately arranging the basic second layer of waste tires (1) and the basic first layer of waste tires (1), then installing the connecting sheet (4) at the joint of the top surface of the basic first layer of waste tires (1) and the bottom surface of the basic second layer of waste tires (1), connecting the basic first layer of waste tires (1) and the basic second layer of waste tires (1) into a whole, then filling the backfill materials (7) in the groove (204), vibrating and rolling to be dense, backfilling to a position 30-50 mm away from the top surface of the second layer of the basic waste tire (1), reserving a connecting sheet (4) on the top surface of the second layer of the basic waste tire (1), and then filling backfill materials (7) to reach the designed elevation of the terrace;
(d) laying a reinforced geogrid (301): leveling the geogrid (3) before laying, reserving the laying length of the back-covered geogrid (302), laying the reinforced geogrid (301), wherein the reinforced geogrid (301) is perpendicular to the height of the wall during laying, and the laying length of the reinforced geogrid behind the wall is 0.7-1.2 times of the height of the wall;
(e) laying and returning the geogrid (302) and an upper first layer of waste tires (1): laying a first layer of upper waste tires (1) on the reserved turn-up geogrid (302), vertically arranging the first layer of upper waste tires (1) and a second layer of basic waste tires (1) in a staggered manner, and connecting the second layer of basic waste tires (1), the turn-up geogrid (302) and the first layer of upper waste tires (1) by using reserved connecting sheets (4);
(f) laying an upper second layer of junked tires (1) and backfilling backfill (7) in the junked tires (1): filling backfill material (7) in the first layer of the waste tires (1) at the upper part, backfilling to a position 30-50 mm away from the top surface of the first layer of the waste tires (1) at the upper part, then laying an upper second layer of waste tires (1), wherein the upper second layer of waste tires (1) and the upper first layer of waste tires (1) are vertically staggered, a connecting sheet (4) is arranged at the joint of the top surface of the upper first layer of waste tyre (1) and the bottom surface of the upper second layer of waste tyre (1), so that the upper first layer of waste tyres (1) and the upper second layer of waste tyres (1) are connected into a whole, then, filling backfill material (7) in the upper second layer of waste tire (1) until the position of the backfill material is 30-50 mm away from the top surface of the upper second layer of waste tire (1), a connecting sheet (4) is reserved on the top surface of the upper second layer of the waste tire (1), then filling backfill materials (7) to the top surface of the upper second layer of the waste tire (1);
(g) laying and returning the geogrid (302): the method comprises the following steps that a bag returning geogrid (302) is used for surrounding the periphery of a first layer of waste tires (1) on the upper portion and a second layer of waste tires (1) on the upper portion, after the bag returning geogrid (302) is used for returning the bags of the waste tires (1), the tail end of the bag returning geogrid (302) is laid at the bottom elevation of the first layer of waste tires (1) on the upper portion in a horizontal shape and is attached to a reinforced geogrid (301), the bag returning geogrid (302) and the reinforced geogrid (301) are connected through a self-locking nylon tie net piece (5), tension is applied to the tail end of the reinforced geogrid (301), after the reinforced geogrid (301) is tightened, the tail end of the reinforced geogrid (301) is fixed in a soil body through a pin, and geogrids (3) adjacent in the horizontal direction are connected through the self-locking nylon tie net piece (5;
(h) arranging a temporary baffle (6): the temporary baffle (6) is arranged at the front end of the retaining wall and is tightly attached to the tire wall, so that the tire wall is prevented from relatively large displacement when the backfill (7) is filled behind the tire wall;
(i) backfill (7) filled behind wall: filling backfill (7) to the top surface of the second layer of the waste tire (1) at the upper part behind the wall, and vibrating and rolling to compact the waste tire;
(j) and (e) repeating the steps (d) to (i) until the wall reaches the design height.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911256971.1A CN110820801A (en) | 2019-12-10 | 2019-12-10 | Reverse-wrapping type waste tire reinforced retaining wall and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911256971.1A CN110820801A (en) | 2019-12-10 | 2019-12-10 | Reverse-wrapping type waste tire reinforced retaining wall and construction method thereof |
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| CN110820801A true CN110820801A (en) | 2020-02-21 |
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| CN112064651A (en) * | 2020-09-09 | 2020-12-11 | 中国科学院地质与地球物理研究所 | Collapse rock cushion energy dissipation protection device and construction method thereof |
| CN112942409A (en) * | 2021-02-01 | 2021-06-11 | 江苏省地质矿产局第三地质大队 | Full-flexible unloading retaining wall and construction method |
| CN113445539A (en) * | 2021-08-14 | 2021-09-28 | 厦门中建东北设计院有限公司 | Limited filling tire wall and construction method thereof |
| CN114875956A (en) * | 2022-05-13 | 2022-08-09 | 江苏科技大学 | Anti-bulging large-deformation turn-up tread reinforced retaining wall and construction method |
| CN115897657A (en) * | 2022-10-24 | 2023-04-04 | 江苏科技大学 | Lattice-jumping back-pack type stepped retaining wall and construction method thereof |
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2019
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