CN103741566A - Compound tire-broken stone anti-skid draining roadbed structure and construction method thereof - Google Patents

Abstract

The invention discloses a compound tire-broken stone anti-skid draining roadbed structure and a construction method thereof. The compound tire-broken stone anti-skid draining roadbed structure comprises waste tires, connecting pieces and broken stones; the construction method comprises the steps of placing longitudinally cut waste tires at the positions of vertexes of an equilateral triangle sequentially, connecting by the connecting pieces sequentially, embedding on a foundation, filling the broken stones inside the equilateral triangle and in the tires, and then filling a soil road bed on the broken stones. According to the compound tire-broken stone anti-skid draining roadbed structure, the waste tires are distributed at the bottom of the roadbed to replace partial soil masses, the friction force of the soil mass and the waste tire or the contact friction force between the broken stones and the tire is remarkably higher compared with the friction force inside the soil masses, the cohesive force or the internal friction angle of the soil mass (no matter for cohesive soil or non-cohesive soil) is increased, and the stability of the roadbed slope is improved.

Description

The anti-skid draining subgrade structure of a kind of composite tyre-rubble and construction method

Technical field

The present invention relates to highway construction field, relate in particular to the anti-skid draining subgrade structure of a kind of composite tyre-rubble and construction method.

Background technology

In recent years, along with people's living standard progressively improves and logistics high speed development, the private car recoverable amount of China and the quantity of lorry improve year by year.The increase of vehicle fleet size has driven expanding economy, and the consumption of doughnut simultaneously and wearing and tearing have also produced a lot of rubbish---junked tire, the living environment that " black pollution " that increasing junked tire forms threatening the whole mankind.At present, the way using junked tire as resource recycling is many, and the main path of recycling has: heat energy utilization, thermal decomposition, production reclaimed rubber etc., wherein, the application of junked tire in road construction is the emphasis of various countries' research and application.On the other hand, in the higher area of some groundwater table (region of no relief as general in Huang), subgrade soils easily water suction is softening, cause subgrade strength that violent decay occurs, under the comprehensive function of vehicle heavy duty and water, very easily there are all kinds of diseases in roadbed, as subgrade settlement, slope erosion coombe, crevice of roadbed or slip collapses, roadbed pitfall or dark hole, it is empty or cave in etc. that end of the bridge protects cone punching, have a strong impact on safety and the comfortableness of road, in application summary > > mono-literary composition of < < junked tire in civil engineering, mention the method for building the road with the half of tire of peviform, but its tire does not form integral body, construction method is still not concrete.

Summary of the invention

The present invention, in order to address the above problem, proposes the anti-skid draining subgrade structure of a kind of composite tyre-rubble and construction method, contributes to alleviate " black pollution " problem that junked tire brings, and by waste recovery recycling, plays the effect of protection of the environment.In addition, by junked tire and rubble comprehensive utilization, effectively prevent roadbed side slope slump, improve the stability of roadbed.

To achieve these goals, the present invention adopts following technical scheme:

The anti-skid draining subgrade structure of a kind of composite tyre-rubble, comprise junked tire, connector and rubble, the junked tire longitudinally cutting is positioned over to vertex of a triangle successively by the shape of equilateral triangle, by connector, connect successively, junked tire is embedded on ground, equilateral triangle is inner is filled with rubble with wheel tyre cavity, then fills earth roadbed thereon.

Described connector is prepared from by resistant material.

A construction method that adopts above-mentioned subgrade structure, the steps include:

(1) compacting of original ground making face is smooth, prevent the longitudinal crooked phenomenon of tire;

(2) junked tire is longitudinally cut open, by equilateral triangle, be arranged on ground, wheel fetal rhythm, apart from 1.5m, couples together basin shape tire transverse binding with connector;

(3) rubble is filled between peviform tire and tire in, rubble filled height, higher than the height 0.5-5cm of the half of tire of basin shape, will note protecting the horizontal connection between tire while filling rubble;

(4) after rolling compacting, fill earth roadbed.

Operating principle of the present invention:

Reinforcement performance:

The slip safety factor of roadbed side slope is relevant with the shear strength of the soil body, the shear strength of the soil body

for the angle of internal friction of the soil body, cohesion, normal stress, angle of internal friction are larger, and shear strength is larger, and the safety factor of sliding is just larger, and slight slope is just more stable.

For increasing the slip safety factor of slight slope, most of engineerings are used geo-grid, increase skid resistance and the resisting moment of the soil body.The present invention uses and connects webbed junked tire replacement geo-grid, tire anti-corrosion capability is strong, anti-aging, tire estimate at least 200 years life-spans, its in length and breadth direction all have stronger supporting capacity, and the interaction between soil particle is strong, can bring into play at short notice reinforced action, strengthen the overall performance of the soil body.

Connecting webbed basin type one side of something, take turns the deficiency that tyre bead soil body principal strain directions lays to make up soil shear strength, its mechanism of action is similar to steel concrete a bit in this respect.The reason that tensile strength strengthens comes from the interaction of tire and the soil body, the high strength of tyre wall can proof stress along tire and the continuous transmission of soil body contact surface, connecting webbed tire is laid in the soil body according to certain angle, can fully retrain the lateral displacement of soil particle, thereby increase widely the self-support stability of the soil body.

Drainage performance:

In the higher region of groundwater table, the rubble drainage blanket of roadbed bottom can play good drainage effect, under capillary water impact, when hardcore bed is set, because its transmission coefficient is larger, capillary water rises to bed course, and major part goes out roadbed along bed course transverse row, only have small part to see through upwards infiltration of bed course, therefore water content reduces a lot while having hardcore bed time channel basal part water content ratio without hardcore bed.When hardcore bed is set, the intensity of roadbed, stability and bearing capacity can obtain larger raising.

Beneficial effect of the present invention is:

1, junked tire being arranged in to roadbed bottom is equivalent to the part soil body and is substituted, and frictional force between the soil body and junked tire or the frictional force by rubble and tire mediate contact enlarge markedly than the frictional force of inside soil body, no matter for cohesive soil, be also non-cohesive soil, all, as the cohesion or the angle of internal friction that have increased the soil body, improved the stability of roadbed side slope;

2, junked tire-rubble roadbed punishment measure can make subgrade rating significantly improve, and improves resistance to shear of soil environment, effectively reduces settling amount;

3, by waste recovery recycling, protection of the environment.

Accompanying drawing explanation

Fig. 1 is structural representation top view of the present invention;

Fig. 2 is reinforcing road bed schematic cross-sectional view of the present invention.

Wherein, 2, junked tire, 3, rubble, 4, connector, 5, roadbed, 6, ground.

The specific embodiment:

Below in conjunction with accompanying drawing and embodiment, the invention will be further described.

As shown in Figure 1, the anti-skid draining subgrade structure of a kind of composite tyre-rubble, comprise junked tire 2, connector 4 and rubble 3, the junked tire 2 longitudinally cutting is positioned over to vertex of a triangle successively by the shape of equilateral triangle, by connector 4, connect successively, be embedded on ground 6, rubble 3 is filled in to equilateral triangle inside and wheel tyre cavity, then fill earth roadbed 5 thereon.

(1) reinforcement performance

The slip safety factor of roadbed side slope is relevant with the shear strength of the soil body, the shear strength of the soil body

for the angle of internal friction of the soil body, cohesion, normal stress, angle of internal friction are larger, and shear strength is larger, and the safety factor of sliding is just larger, and slight slope is just more stable.

For increasing the slip safety factor of slight slope, most of engineerings are used geo-grid, increase skid resistance and the resisting moment of the soil body.The present invention uses and connects webbed junked tire 2 replacement geo-grid, tire anti-corrosion capability is strong, anti-aging, tire estimate at least 200 years life-spans, its in length and breadth direction all have stronger supporting capacity, and the interaction between soil particle is strong, can bring into play at short notice reinforced action, strengthen the overall performance of the soil body.

Connecting webbed basin type one side of something, take turns the deficiency that tyre bead soil body principal strain directions lays to make up soil shear strength, its mechanism of action is similar to steel concrete a bit in this respect.The reason that tensile strength strengthens comes from the interaction of tire and the soil body, the high strength of tyre wall can proof stress along tire and the continuous transmission of soil body contact surface, connecting webbed tire is laid in the soil body according to certain angle, can fully retrain the lateral displacement of soil particle, thereby increase widely the self-support stability of the soil body.

Junked tire 2 is arranged in to roadbed bottom to be equivalent to the part soil body and to be substituted, and frictional force between the soil body and junked tire or the frictional force by rubble and tire mediate contact enlarge markedly than the frictional force of inside soil body, no matter for cohesive soil, be also non-cohesive soil, all, as the cohesion or the angle of internal friction that have increased the soil body, improved the stability of roadbed side slope.

(2) drainage performance

In the higher region of groundwater table, rubble 3 drainage blankets of roadbed bottom can play good drainage effect, under capillary water impact, when rubble 3 bed course is set, because its transmission coefficient is larger, capillary water rises to bed course, and major part goes out roadbed 5 along bed course transverse row, only have small part to see through upwards infiltration of bed course, therefore water content reduces a lot while having rubble 3 bed course time channel basal part water content ratios without rubble 3 bed course.When rubble 3 bed course is set, the intensity of roadbed 5, stability and bearing capacity can obtain larger raising.

Junked tire-rubble roadbed punishment measure can make roadbed 5 bearing capacities significantly improve, and improves resistance to shear of soil environment, effectively reduces settling amount.

A construction method that adopts above-mentioned subgrade structure, the steps include:

(1) compacting of original ground making face is smooth, prevent the longitudinal crooked phenomenon of peviform tire;

(2) junked tire 2 is longitudinally cut open, by equilateral triangle, be arranged on ground 6, take turns fetal rhythm apart from 1.5m, the resistant material made from high molecular polymers such as transverse connection 3(polypropylene, polyvinyl chloride) colligation of peviform tire is connected into form as shown in Figure 1;

(3) rubble 3 is filled between peviform tire and tire in, in tire, filling rubble 3 is for follow-up fill construction do mechanization operation convenience, rubble 3 filled height can, a little more than the height of the half of tire of basin shape, will note protecting the horizontal connection between tire while filling rubble 3;

(4) after rolling compacting, fill earth roadbedly 5, roadbed 5 cross sections after having filled as shown in Figure 2.

Example one:

In blue or green Lingao, certain contract section of speed adopts this composite road bed field trial of doing, this section of road foundation height mark 5.5m, tire arrangement form is equilateral triangle, wheel fetal rhythm is apart from 1.6m, the banded connector 4 made from polyvinyl chloride macromolecule material connects into the colligation of peviform tire netted, rubble filled height 20cm.Punishment result shows, subgrade construction completed after 3 years, and side slope is without slump phenomenon, and roadbed 5 bottom soil body water content are lower, and this shows, this form roadbed 5 reinforce and draining in play a good role, improved the stability of roadbed 5.

Example two:

Shandong provincial highway S103 is in the general region of no relief of Huang, this district's groundwater table is higher, for guaranteeing the stability of roadbed 5, at some, use composite tyre-rubble Subgrade 5, punishment section roadbed 5 design elevations are generally 4.5m～6.5m, and tire arrangement form is equilateral triangle, and wheel fetal rhythm is apart from 1.5m, the banded connector 4 made from polyvinyl chloride macromolecule material connects into the colligation of peviform tire netted, rubble 3 filled height 25cm.Punishment result shows, after highway operation 5 years, side slope is without slump phenomenon, the following soil body water content of rubble 3 bed course is higher, the above subgrade soils water content of rubble 3 bed course is lower, and roadbed 5 bottoms are very stable, and road surface is without flexure phenomenon, this shows, this form roadbed 5 has significant effect when reply phreatic high.

Although above-mentioned, by reference to the accompanying drawings the specific embodiment of the present invention is described; but be not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection scope of the present invention.

Claims (3)

1. the anti-skid draining subgrade structure of composite tyre-rubble, it is characterized in that: the anti-skid draining subgrade structure of a kind of composite tyre-rubble, comprise junked tire, connector and rubble, the junked tire longitudinally cutting is positioned over to vertex of a triangle successively by the shape of equilateral triangle, by connector, connect successively, junked tire is embedded on ground, and equilateral triangle is inner is filled with rubble with wheel tyre cavity, then fills earth roadbed thereon.

2. the anti-skid draining subgrade structure of a kind of composite tyre-rubble as claimed in claim 1, is characterized in that: described connector is prepared from by resistant material.

3. adopt a construction method for above-mentioned subgrade structure, it is characterized in that: the steps include:

(1) compacting of original ground making face is smooth, prevent the longitudinal crooked phenomenon of tire;

(2) junked tire is longitudinally cut open, by equilateral triangle, be arranged on ground, wheel fetal rhythm, apart from 1.5m, couples together basin shape tire transverse binding with connector;

(3) rubble is filled between peviform tire and tire in, rubble filled height, higher than the height 0.5-5cm of the half of tire of basin shape, will note protecting the horizontal connection between tire while filling rubble;

(4) after rolling compacting, fill earth roadbed.

Images