CN101225662B - Method for building retaining wall by using waste-old tyre and triangle strips - Google Patents

Abstract

The invention relates to a method of building retaining wall using wasted tires and triangle belts, belonging to the field of geotechnical technique, which is characterized in that the whole tire is divided equally into four points at the juncture of the sidewall and the tire tread, where a plurality of prepared holes are arranged, then the tire is cut vertically into two half equal tires along the midline of the tire tread; the triangle belt cut to same length passes the prepared holes of the half tire and binds fold-back, and the remaining triangle belts bind with the prepared holes of the other half tires, which forms grid structure as doing orderly. The triangle belts are pre-buried in the retaining wall plate and a row of close-packed half tires are arranged near the retaining wall plate along the vertical direction of retaining wall, and the retaining wall plate is connected with the grid structure of the tire via the tire row. The method of building retaining wall using wasted tires and triangle belts has the advantages of reusing waste, realizing environmental protection, wastes utilization and resource saving.

Description

Method of Constructing Retaining Wall Using Waste Tires and V-belts

technical field

The invention relates to a method in the technical field of foundation engineering for fixing buildings, in particular to a method for building a retaining wall by using waste tires and triangle belts.

Background technique

At present, my country's highways, railways, water conservancy, municipal and national defense constructions have been rapidly developed. During the construction of these infrastructures, retaining walls are often built to support the foundation or slope soil to prevent soil or fill deformation. Instability and cause engineering accidents. There are various forms of retaining walls, and reinforced retaining walls are widely used because of their low cost and superior performance. The reinforced materials of reinforced retaining walls are often geogrids and geotechnical strips. But it is expensive; there are usually two ways to connect the retaining wall panel and the reinforced material, one is to embed the steel pull ring in the panel, and the reinforced material is connected to the steel pull ring, but the steel pull ring is easy to corrode and cause life The short problem is difficult to solve; the second is to reserve a concrete channel on the wall panel, and the ribs pass through the reserved holes and turn back to complete the connection. Due to the roughness of the reserved channels, the friction of the ribs is very large, resulting in damage to the wall. The tensile force of the panel is reduced or the connection is broken; therefore, the above two connection methods are likely to cause deformation and shedding of the wall panel, which seriously affects the service life of the retaining wall; at the same time, due to the material properties and geometric shapes of the reinforced material itself The scope of application of filler is small, which limits the popularization and utilization of reinforced retaining walls.

As the number of automobiles in our country increases year by year, the number of waste automobile tires is also increasing rapidly. In 2004, the output of tires in my country reached 239 million, ranking second in the world. Because waste tires are resistant to aging, not easy to degrade naturally, and the recycling rate is low, waste tires have become a new source of solid waste pollution, known as "black pollution". At the same time, with the advancement of my country's industrialization process and the improvement of agricultural mechanization, the waste V-belts used for power transmission are increasing year by year. The structure of V-belts is the same as that of tires, and they are also difficult to degrade and reuse naturally, forming a new pollution source. environmental pollution and waste of resources.

It is found through literature retrieval of the prior art that waste tires utilize many methods in retaining walls, for example, Chinese patent application number is 98805941.X patent, announcement number: CN1259182, name: retaining wall system. Retaining walls or embankments are built using discarded tires and conveyor belt strips. This technology proposes to set one or more layers of tires near the retaining wall and embankment, fill the inner cavity of the tire with filler, and the central axis of each tire usually deviates from the vertical direction at an inclination angle of 10 to 20 degrees, and the reinforcement part is composed of The tread sections of the tires or conveyor belts are joined together, preformed like a geogrid structure, bound together with the tires, and the belt strips or tire treads are then extended horizontally or obliquely into the wall to form the retaining wall. The disadvantage of this structure is that the tires are not connected as a whole, but are only connected between each two half tires through the remaining tread, so the overall strength is insufficient, and the soil behind the retaining wall provides support. The blocking effect is very limited; the process of forming a grid structure using tire tread or conveyor belt strips is complicated and the process is cumbersome; due to the smooth surface of the conveyor belt, the friction coefficient between the formed grid structure and the soil is small, and the overall soil reinforcement effect is poor ; Simultaneously the binding process of tire tread or conveyor belt strip and tire is complicated.

Contents of the invention

The purpose of the present invention is to address the deficiencies in the prior art, to provide a method for building a retaining wall using waste tires and triangle belts, so as to eliminate the environmental pollution caused by waste tires and triangle belts and overcome the current construction process of reinforced retaining walls In order to solve the disadvantages in the waste tires and V-belts, build a strong and durable retaining wall, turn waste into treasure, and achieve the purpose of environmental protection, waste utilization and resource conservation.

The present invention is achieved through the following technical solutions, and the present invention comprises the following steps:

The first step is the formation of the tire grid structure.

At the junction of the tire sidewall and the tread, divide the entire tire into four equal parts, and reserve a hole there, then cut the tire longitudinally from the center line of the tread, and divide it into two equal halves of the tire. Cut the belts to equal lengths, pass through the reserved holes of half of the tires with a triangular belt and fold them back for binding, use the remaining triangle belts to bind with the reserved holes of the other half of the tires, and so on to form a grid structure When binding, keep The distance between adjacent half tires is equal and the horizontal and vertical of the triangular belt.

As we all know, the compressive performance of soil is very good, but its shear performance is poor, so it is easy to cause retaining wall collapse and landslide. In the process of building the retaining wall, the tire grid structure is placed flat on the soil layer, the side with the side wall is placed downwards, and the tread is upwards, and then the filler is spread and the soil is compacted. At this time, the tire cavity Filled with dense filler, the tires and triangular belts distributed in the compacted soil divide the soil into square blocks, hindering the slippage of the soil and effectively improving the overall stability of the soil; due to the tires The unevenness of the side wall can provide friction like a geogrid, while the surrounding circular tread provides an embedding force like a geocell, so the entire grid structure integrates the geogrid and the geocell The respective advantages, the overall reinforcement effect on the soil is very good, and the tension provided to the wall panel is very large.

The second step is the connection of the retaining wall panels with the tire grid structure.

The V-belt is pre-embedded in the face of the retaining wall. Due to the high strength of the V-belt and the characteristics of not easy to deform, it effectively solves the shortcomings of the retaining wall face that are easy to fall off and deform due to the corrosion of the steel pull ring and the damage of the tendon; Close to the face of the retaining wall, a row of closely-packed half tires is arranged along the longitudinal direction of the retaining wall. The face of the retaining wall is connected with the tire grid structure through the tire row to improve the overall reinforcement effect on the face of the retaining wall and prevent partial blockage. Deformation and shedding of earth wall panels. Since discarded tires and V-belts are sources of solid waste pollution, they both have the characteristics of aging resistance, corrosion resistance and difficulty in natural degradation, so this type of retaining wall is durable and adaptable to the environment.

Beneficial effects of the present invention: waste tires and V-belts that are difficult to reuse can be simply cut and tied to form a grid structure that can reinforce the soil, promote waste reuse, reduce pollution sources, and protect the environment; due to tires and V-belts It is characterized by aging resistance, corrosion resistance and difficulty in natural degradation. Therefore, the retaining wall constructed by the grid structure has good durability. Since the grid structure and the wall panel are connected by the pre-embedded triangle belt, It overcomes the shortcomings of pre-embedded steel bar pull rings that are easy to corrode and concrete tunnels that cause damage to the reinforcement, and can improve the durability of the retaining wall; at the same time, due to the large inner diameter of the tire cavity, half of the tire is connected by a triangle belt And the grid structure formed has a larger adaptability to the filler; because half of the tire sidewall is buried in the dense soil with the tread facing upward, the friction provided by the tire sidewall is lower than that of other reinforcing materials. The embedding force provided by the tread and the tread is very large. At the same time, due to the large elastic modulus of the triangular belt, the tensile force provided to the retaining wall panel is very large, which can keep the wall panel from shifting; due to the grid structure Effective reinforcement of the soil improves the overall performance of the soil. Therefore, the earth pressure of the soil behind the retaining wall on the retaining wall is reduced, which can effectively prevent the partial collapse and overall instability of the retaining wall.

Description of drawings

Figure 1 is a side view of the entire tire

Figure 2 is a plan view of half a tire

Figure 3 is a side view of the V-belt

Figure 4 is a side cross-sectional view of a retaining wall panel.

Figure 5 is a cross-sectional view of the retaining wall

Figure 6 is a sectional view of the retaining wall along the direction A-A

In the figure, 1 is a reserved hole, 2 is a half tire, 3 is a triangular belt, 4 is a distributed steel bar, 5 is a retaining wall panel, and 6 is a concrete strip foundation.

Detailed ways

The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

As shown in Figure 1, it is a side view of the whole tire. At the junction of the whole tire sidewall and the tread, the whole tire is equally divided into four points, and drilled at this place, the size of the reserved hole 1 will ensure that the triangle belt 3 passes through smoothly.

As shown in FIG. 2 , it is a plan view of a half tire 2 . The whole tire is then cut longitudinally along the tread centerline into two equal halves 2 .

As shown in FIG. 3 , it is a side view of the triangular belt 3 . Cut and bind the discarded circular closed triangle belt 3, and cut them into straight segments of equal length.

As shown in FIG. 4 , it is a side sectional view of the retaining wall panel 5 . The face plate 5 of the retaining wall is rectangular in shape and is prefabricated with reinforced concrete. The triangle belt 3 outside the earth wall panel 5 will reserve a certain length, which is convenient to bind with half tires.

As shown in Figure 5, it is a cross-sectional view of the retaining wall. The retaining wall panel 5 is vertically placed on the concrete strip foundation 6, and a row of half tires 2 close to the retaining wall panel 5 is tightly bound to the retaining wall panel 5, and the row of tires and the tire grid structure are connected by a triangular belt 3 , The triangular belt 3 is located at the lower part of the sidewall of the adjacent half tire 2 .

As shown in Figure 6, it is a sectional view of the retaining wall along the A-A direction. Close to the face plate 5 of the retaining wall, a row of half tires 2 is arranged along the longitudinal direction of the retaining wall, and the half tires 2 are tied to each other through the triangle belt 3, and the row of tires is connected with the tire grid structure through the triangle belt 3 , the tire grid structure is formed by binding the half tire 2 and the triangular belt 3. In the tire grid structure, the half tires 2 must be aligned up and down, left and right, and the distance between adjacent ones is equal. 3 binding, to keep the triangular belt 3 straight and tight.

Below is the concrete construction process of the embodiment of the present invention:

(1) According to the design requirements, determine the position of the foundation 6 of the reinforced retaining wall, replace and fill the foundation pit with lime gravel soil, set up a drainage layer of gravel or gravel, and ensure smooth drainage to prevent water accumulation behind the retaining wall The formation of water pockets endangers the safety of the retaining wall. The bearing capacity of the foundation on the bottom surface of the foundation is tested. After the bearing capacity meets the design requirements, the concrete strip foundation 6 is poured. When the concrete strength meets the requirements, the retaining wall panel 5 is installed.

(2) When the retaining wall panel 5 is installed, the top surface of the concrete strip foundation 6 is leveled with low-strength mortar to facilitate the smooth and stable installation of the retaining wall panel 5. After the installation of the first floor retaining wall panel 5 is completed, Carry out the paving and leveling of the filler, when the paving thickness reaches the position of the triangular belt 3, then carry out compaction and leveling, close to the retaining wall panel 5, set a row of closely arranged half tires 2, half tires The arrangement direction of the tires 2 is along the length direction of the retaining wall. The half tires 2 should be arranged tightly and neatly. The V-belt 3 and the half tire 2 close to the retaining wall panel 5 are bound at the reserved hole 1, and the binding method between the half tires 2 and between the retaining wall panel 5 and the half tire 2 is the same. The methods are as follows: pass the triangular belt 3 through the reserved hole 1, go around half of the side wall of the tire 2 and fold it back for binding.

(3) Bind the first row of half tires 2, and the first half tire 2 connected to the retaining wall panel 5 is opposite to the junction of the retaining wall panel 5, and the other half is connected with the triangle belt 3 in the same way. two tires 2, and keep the half tires 2 arranged in a straight line, the distance between the centers of two adjacent half tires 2 is 2 times the tire diameter, and so on until the length reaches the design requirements, and then the half tires of this row To tighten and adjust, it is necessary to keep the half tire 2 from deforming, and at the same time require the V-belt 3 between the two half tires 2 to be straightened and tightened to prevent it from bending and kinking, and to arrange the second row in the same way Half tire 2 and V-belt 3, after the second row is arranged, tie the half tire 2 corresponding to the second row and the first row with V-belt 3 at the reserved hole 1, while keeping the V-belt 3 flat. Straight and taut. Form the third column and the fourth column and so on in the same way until the grid structure is finally formed,

(4) After the grid structure is formed, pave the filler. During the paving process, the filler will fill the tire cavity. When the leveling and compaction height of the filler is close to the top of the wall panel 5 of the layer, place the upper layer Retaining wall panels 5, between the upper and lower retaining wall panels 5 are embedded with low-grade mortar to adjust the elevation, and the horizontal error of adjacent panels on the same layer is not greater than 10mm. At this time, the formation of the grid structure and the paving of the filler Same as above, and so on until you reach the height of the retaining wall. At the lower and middle parts of the retaining wall, the vertical seams of some retaining wall panels 5 should be dry-built as weep holes. After the soil particles and gravel meet water, they will be lost from the panel gap, causing the retaining wall panel 5 to be empty.

(5) Simultaneously, the grid structure that is made up of half tire 2 and triangular belt 3 can be tied up according to design requirement in advance, and in construction process, directly pull to the spot, carry out and just can directly construct, improve construction progress; The construction method of the first-grade retaining wall is the same as above, but the above method is repeated; the construction method of the double-sided retaining wall is the same as above, which is equivalent to the construction of two single-sided retaining walls.

It can be seen from the above-mentioned embodiments that since the grid structure and the wall panel are connected by the pre-embedded triangle belt, the disadvantages of the pre-embedded steel bar pull ring being easy to corrode and the concrete channel passing through the reinforcement can be overcome. The durability of the retaining wall; half of the tire sidewall is buried in the dense soil with the tread facing upward, so compared with other reinforced materials, the friction provided by the tire sidewall and the embedding force provided by the tread are It is very large, and the elastic modulus of the triangular belt is relatively large, which provides a large tensile force to the retaining wall panel, which can keep the wall panel from shifting; because the grid structure effectively reinforces the soil, the soil The overall performance is improved, so the earth pressure of the soil behind the retaining wall on the retaining wall is reduced, which can effectively prevent the partial collapse and overall instability of the retaining wall.

Claims (4)

1. method of utilizing junked tire and V-belt to build retaining wall may further comprise the steps:

The first step, the formation of tire lattice structure: at the intersection of sidewall and tyre surface, whole tire is divided into 4 points, and at this place's preformed hole, then tire is vertically cut from the tyre surface center line, be divided into two half equal tires, the V-belt is cut into equal lengths, and pass the preformed hole of half tire and the colligation of turning back with the V-belt, preformed hole place colligation with remaining V-belt and other half tire, and the like, when forming the lattice structure colligation, keep the distance of adjacent half tire to equate to put down vertically with the horizontal of V-belt;

Second step, the retaining wall panel is connected with the tire lattice structure: pre-buried V-belt in the retaining wall panel, at close retaining wall panel place, along half tire that a row solid matter vertically is set of retaining wall, the retaining wall panel is connected with the tire lattice structure by the tire row, it is characterized in that:

Described tire lattice structure, it lies on the soil layer in building the retaining wall process, the placed face down that sidewall will be arranged, tyre surface upwards, pave the then filler and the compacting soil body have filled up closely knit filler in the tyre cavity, be distributed in that tire and the V-belt in the soil body is divided into the grid piece with the soil body after the compacting, hinder the slippage of the soil body, improved the resistance to overturning of the soil body.

2. the method for utilizing junked tire and V-belt to build retaining wall according to claim 1, it is characterized in that, the arranged direction of described half tire is the length direction along retaining wall, half tire is arranged closely neat, firm in the colligation of preformed hole place between half tire with the V-belt, pre-buried V-belt is carried out colligation with half tire near the retaining wall panel at the preformed hole place on the retaining wall panel, between half tire and the binding method between retaining wall panel and half tire identical, binding method is: preformed hole is passed in the V-belt, and the sidewall of walking around half tire turns back and carries out colligation.

3. according to claim 1 or the 2 described methods of utilizing junked tire and V-belt to build retaining wall, it is characterized in that described half tire is by straight line, the distance between two adjacent half tire center is 2 times a diameter of tyres.

4. the method for utilizing junked tire and V-belt to build retaining wall according to claim 1 is characterized in that, is positioned at layer and adjacent retaining wall panel horizontal error to be less than or equal to 10mm.

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