CN213597025U

CN213597025U - Utilize reinforced earth retaining wall of bamboo timber reinforcement

Info

Publication number: CN213597025U
Application number: CN202022035358.1U
Authority: CN
Inventors: 罗正东; 谢测坤; 沈程鹏; 王倩
Original assignee: Xiangtan University
Current assignee: Xiangtan University
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2021-07-02
Anticipated expiration: 2030-09-17

Abstract

The utility model discloses a reinforced earth retaining wall reinforced by bamboo wood, which comprises a wall surface layer and a reinforced earth layer positioned between the wall surface layer and original soil; the bottom of the wall surface layer is provided with a concrete foundation, the reinforced soil layer consists of a plurality of layers of bamboo reinforcement grids and fillers, the bottom of the reinforced soil layer is provided with a broken stone cushion layer, and the top of the reinforced soil layer is provided with a wall top; and the permeable geotextile is laid on the contact surface of the wall surface layer and the reinforced soil layer and the contact surface of the reinforced soil layer and the broken stone cushion layer. The utility model effectively solves the problem of water accumulation of the reinforced earth retaining wall, and simultaneously utilizes bamboo wood as the reinforced material of the reinforced earth retaining wall, thereby obviously improving the shear deformation resistance of the soil body and effectively enhancing the integrity and stability of the reinforced earth retaining wall; it has low cost, convenient material selection and environmental protection.

Description

Utilize reinforced earth retaining wall of bamboo timber reinforcement

Technical Field

The utility model relates to a technical field of retaining wall especially relates to a low cost, green, the good reinforced earth retaining wall of protecting effect.

Background

The retaining wall is a structure for supporting roadbed filling or hillside soil and preventing the filling or soil from deforming and destabilizing. The reinforced earth retaining wall is composed of three parts of filling, tie bars in the filling and wall panels, and the like, and the reinforced earth retaining wall cuts and reduces the lateral pressure of soil into the soil body through the friction action between the filling and the tie bars to play a role in stabilizing the soil body.

The existing reinforced earth retaining wall and the tie bars are generally made of geosynthetic materials, although the integrity and the stability of the reinforced earth retaining wall can be obviously improved, because the raw materials of the reinforced earth retaining wall are high-molecular polymers, a large amount of energy and materials are consumed for production, and meanwhile, wastes generated in the production process have great influence on the environment.

Bamboo is used as a natural building material, has the advantages of good mechanical property, strong regeneration capacity and high economic value, is applied to the field of soft soil roadbed reinforcement in China at the present stage to replace geogrids, and achieves certain effect, but a method for effectively applying bamboo to a reinforced earth retaining wall is lacked in the prior art, and accordingly, the reinforced earth retaining wall reinforced by bamboo can be designed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low cost, green and the good reinforced earth retaining wall of protecting effect, the current reinforced earth retaining wall lacing wire strip material of purpose solution is not environmental protection, problem that drainage performance is poor.

In order to achieve the above purpose, the technical solution of the present invention is as follows:

a bamboo reinforced retaining wall comprises a wall surface layer (1), a reinforced soil layer (2), an original soil layer (3), a concrete foundation (4), a broken stone cushion layer (5) and a wall top (6); wall facing (1) hugs closely on reinforced soil layer (2), and reinforced soil layer (2) keep away from one side and the concatenation of original state soil layer (3) of wall facing (1), concrete foundation (4) are located wall facing (1) below, rubble bed course (5) are laid to reinforced soil layer (2) bottom, and the top is equipped with wall crown (6).

As an improvement of the utility model, the reinforced soil layer (2) comprises a bamboo reinforcement grid (7) and a filler (8), and the filler (8) is three-layer soil.

As an improvement of the utility model, bamboo rib grid (7) adopt the mao bamboo preparation that the age is greater than three years, all through anticorrosive mould proof treatment before the preparation, processing is wide 40mm, thick 6mm ~ 8 mm's bar to weave with great ease, crisscross lapped mode from top to bottom, horizontal longitudinal separation control is at 20cm ~ 30cm, three graticule mesh hole widths of overlap joint coincidence between adjacent bamboo rib grid (7), and the adoption is fixed from locking-type nylon ribbon (12) ligature.

As an improvement of the utility model, stretch out when bamboo reinforcement grid (7) are laid and add muscle soil layer (2) and embedding wall covering (1), then the recoil is to adding in muscle soil layer (2), and the degree of depth that imbeds wall covering (1) is 1/3 ~ 1/2 wall covering (1) thickness

As an improvement of the utility model, the gravel cushion layer (5) is laid by gravel with the particle size of 1 cm-4 cm and the thickness of 20 cm-40 cm.

As an improvement of the utility model, the geotextile (10) that permeates water has been laid to wall surface (1) and the contact surface that adds muscle soil layer (2) and rubble bed course (5).

As an improvement of the utility model, wall surface (1) is pre-buried to have PVC drain pipe (9), and PVC drain pipe (9) intraductal filter screen (11) of installing.

The technical effects of the utility model reside in that:

1. the utility model discloses a form that flexible bamboo muscle grid and the wall layer of whole rigidity combined together sets up the bamboo muscle grid and adds the muscle with the muscle soil layer, and the bamboo muscle grid is pour with the wall layer and is in the same place, and the common atress of three shows bigger wholeness, stability to effectively reduce the pressure of the side soil body, improve reinforced earth retaining wall barrier propterty.

2. The bamboo wood is subjected to corrosion and mildew prevention treatment, is not easy to corrode when being used as a reinforcement material, is green and environment-friendly, and greatly saves the manufacturing cost.

3. Through setting up rubble bed course and the geotechnological cloth that permeates water to and set up the drainage channel at the wall layer, can effectively solve the ponding problem of reinforced earth retaining wall, gapped between the rubble, kept better water permeability, combine the geotechnological cloth that permeates water simultaneously can be better permeate water, avoid the soil body to block up the drainage channel simultaneously.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

FIG. 1 is a schematic sectional view of a reinforced retaining wall after completion of construction;

FIG. 2 is a schematic diagram of the overlapping of adjacent bamboo reinforcement grids;

FIG. 3 is a schematic view of a PVC drainpipe;

FIG. 4 is a schematic view of a nylon cable tie;

wherein, 1 is the wall surface layer, 2 is the reinforced soil layer, 3 is the original state soil layer, 4 is the concrete foundation, 5 is the rubble bed course, 6 is the wall crown, 7 is bamboo reinforcement grid, 8 is the filler, 9 is the PVC drain pipe, 10 is the geotechnological cloth that permeates water, 11 is the filter screen, 12 nylon ribbon.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example one

Referring to fig. 1 and 2, the utility model provides a bamboo reinforced retaining wall, which comprises a wall surface layer (1), a reinforced soil layer (2), an original soil layer (3), a concrete foundation (4), a broken stone cushion layer (5) and a wall top (6); wall facing (1) hugs closely on reinforced soil layer (2), and reinforced soil layer (2) keep away from one side and the concatenation of original state soil layer (3) of wall facing (1), concrete foundation (4) are located wall facing (1) below, rubble bed course (5) are laid to reinforced soil layer (2) bottom, and the top is equipped with wall crown (6).

Preferably, the reinforced soil layer (2) comprises a bamboo reinforcement grid (7) and a filler (8), and the filler (8) is bentonite.

Preferably, the bamboo rib gratings (7) are made of moso bamboos with the age period of more than three years, the moso bamboos are all subjected to corrosion and mildew prevention treatment before being manufactured, processed into strips with the width of 40mm and the thickness of 6 mm-8 mm, woven in a vertically and horizontally staggered overlapping mode, the horizontal and vertical distances are controlled to be 20 cm-30 cm, the width of three grid holes is overlapped at the overlapping part between every two adjacent bamboo rib gratings (7), and the bamboo rib gratings are bound and fixed by a self-locking nylon binding tape (12).

Preferably, when the bamboo reinforcement grid (7) is laid, the bamboo reinforcement grid extends out of the reinforced soil layer (2) and is embedded into the wall surface layer (1), then the bamboo reinforcement grid is rolled back into the reinforced soil layer (2), and the depth of the bamboo reinforcement grid embedded into the wall surface layer (1) is 1/3-1/2 in thickness of the wall surface layer (1).

Preferably, the gravel cushion layer (5) is paved by gravel with the grain diameter of 1 cm-4 cm and the thickness of 20 cm-40 cm.

Preferably, the contact surface of the wall surface layer (1) and the reinforced soil layer (2) and the contact surface of the reinforced soil layer (2) and the broken stone cushion layer (5) are paved with permeable geotextile (10).

Preferably, PVC drain pipe (9) are pre-buried in wall surface layer (1), and filter screen (11) are installed to PVC drain pipe (9) intraductal.

Claims

1. A reinforced earth retaining wall reinforced by bamboo wood is characterized by comprising a wall surface layer (1), a reinforced earth layer (2), an original earth layer (3), a concrete foundation (4), a broken stone cushion layer (5) and a wall top (6); wall facing (1) hugs closely on reinforced soil layer (2), and reinforced soil layer (2) keep away from one side and the concatenation of original state soil layer (3) of wall facing (1), concrete foundation (4) are located wall facing (1) below, rubble bed course (5) are laid to reinforced soil layer (2) bottom, and the top is equipped with wall crown (6).

2. The bamboo-reinforced soil retaining wall according to claim 1, wherein the reinforced soil layer (2) comprises bamboo grid (7) and filler (8), and the filler (8) is soil triad.

3. The reinforced soil retaining wall reinforced with bamboo material according to claim 2, wherein the bamboo reinforcement grids (7) are made of moso bamboo of which the age is more than three years, are processed into strips with the width of 40mm and the thickness of 6mm to 8mm through antiseptic and mildew-proof treatment before manufacture, are woven in a vertically and horizontally staggered overlapping mode, the horizontal and vertical spacing is controlled to be 20cm to 30cm, the width of three grid holes is overlapped at the overlapping position between the adjacent bamboo reinforcement grids (7), and are bound and fixed by a self-locking nylon binding tape (12).

4. The bamboo-reinforced soil retaining wall as claimed in claim 2, wherein the bamboo grid (7) is laid out to extend out of the reinforced soil layer (2) and to be embedded in the wall surface layer (1), and then is rolled back into the reinforced soil layer (2), and the depth of the embedded wall surface layer (1) is 1/3-1/2 of the thickness of the wall surface layer (1).

5. The reinforced soil retaining wall reinforced with bamboo material according to claim 1, wherein the crushed stone cushion layer (5) is laid with crushed stones having a particle size of 1cm to 4cm and a thickness of 20cm to 40 cm.

6. The reinforced earth retaining wall reinforced with bamboo wood according to claim 1, wherein a permeable geotextile (10) is laid on the contact surface of the wall surface layer (1) and the reinforced earth layer (2) and the contact surface of the reinforced earth layer (2) and the broken stone cushion layer (5).

7. The reinforced soil retaining wall reinforced with bamboo wood according to claim 1, wherein the wall surface layer (1) is pre-embedded with PVC drain pipes (9), and the PVC drain pipes (9) are internally provided with filter screens (11).