CN210238176U - Road subgrade settlement treatment device - Google Patents

Abstract

The utility model discloses a road bed settlement treatment device, include: the concrete pile comprises a plain concrete pile body, a graded broken stone cushion layer, a pavement structure layer and a drainage facility; the pavement structure layer is a pavement layer repaired aiming at the subgrade subsidence area; the graded broken stone cushion layer is arranged below the pavement structure layer of the subgrade subsidence area, and graded broken stones with the thickness not less than 15cm are adopted; the plain concrete pile body is arranged at the bottom of the graded broken stone cushion layer, concrete filler is adopted in the plain concrete pile body for vibrating and compacting, and the plain concrete pile body extends into the bearing layer by not less than 1 meter; the drainage facilities are side ditches or drainage ditches, and the drainage facilities are built on the side of the pavement structure layer. Through the technical scheme of the utility model, can draw materials on the spot, convenient transportation has reduced engineering cost, and construction process is simple, and the punishment effect is better.

Description

Road subgrade settlement treatment device

Technical Field

The utility model relates to a road engineering technical field especially relates to a road bed settlement punishment device.

Background

In the using process of a road, subgrade settlement is a common disease and refers to a phenomenon that a road surface sinks due to vertical deformation of the subgrade and the road surface. There are generally three situations: 1. and (3) uniform settlement: the roadbed and the road surface are further compact and stable under the action of natural factors and driving, so that the settlement caused by the compaction and the stability can not cause the damage to the road surface generally; 2. uneven settlement: because the roadbed and the pavement are not compact and the rolling is not uniform, the roadbed and the pavement deform under the erosion of water and the action of driving; 3. local subsidence: the roadbed is partially filled with incompact or has graves, dead wells, tree pits, grooves and the like, and sinks when being eroded by water. The subgrade settlement brings much inconvenience and even potential safety hazard to road users. Therefore, how to effectively solve the problem of subgrade settlement is an urgent issue facing road practitioners.

The commonly used roadbed subsidence methods include the following methods: the original ground is a soft soil layer, when the height of the embankment is lower, the soft soil layer is dug and removed, good fillers are added, and the embankment is filled and tamped according to the original height; the roadbed is higher, and can adopt sanding pile, stake, lime stake etc. to handle. The filling material with good water seepage is selected, humus soil or soil with grass and tree roots is not used, and the filling material is filled and tamped layer by layer when being paved, and ground water flowing to a roadbed is drained in time. The sinking caused by improper filling and paving methods needs to be removed in time, and the original filling is paved and compacted again according to the regulations, and simultaneously the ditch cleaning and draining are needed to be done to reduce the underground water level.

SUMMERY OF THE UTILITY MODEL

At least one to in the above-mentioned problem, the utility model provides a road bed settlement treatment device utilizes the concrete pile to become a formation certain intensity, carries out the punishment to soft base, adopts the graded broken stone pad to locate plain concrete pile body top, can draw materials on the spot, and convenient transportation has reduced engineering cost, and construction process is simple, and the punishment effect is better.

In order to achieve the above object, the utility model provides a road bed settlement treatment device, include: the concrete pile comprises a plain concrete pile body, a graded broken stone cushion layer, a pavement structure layer and a drainage facility; the pavement structure layer is a pavement layer repaired aiming at the subgrade subsidence area; the graded broken stone cushion layer is arranged below the pavement structure layer of the subgrade settlement area, and graded broken stones with the thickness not less than 15cm are adopted; the plain concrete pile body is arranged at the bottom of the graded broken stone cushion layer, concrete filler is adopted in the plain concrete pile body for vibrating and compacting, and the plain concrete pile body extends into the bearing layer for not less than 1 meter; the drainage facilities are side ditches or drainage ditches, and the drainage facilities are built on the side edges of the pavement structure layer.

In the above technical solution, preferably, the pavement structure layer is a concrete layer or an asphalt layer laid after milling or dismantling the foundation subsidence area.

In the above technical solution, preferably, the graded crushed stones of the graded crushed stone cushion layer include coarse aggregates and fine aggregates, the crushing value of the coarse aggregates is not more than 30%, and the content of needle-like particles is not more than 20%.

In the above technical scheme, preferably, the section of the plain concrete pile body is square, rectangular, circular or annular, and the outer diameter of the plain concrete pile body is 20-60 cm.

In the above technical solution, preferably, the plain concrete pile body is formed by introducing a concrete filler into a pile hole, and then casting and vibrating the concrete filler at one time.

In the above technical solution, preferably, the arrangement manner of the plain concrete piles is an equilateral triangle arrangement, a quincunx arrangement, or a square arrangement.

In the above technical solution, preferably, the drainage facility is constructed by cast-in-place concrete and/or grouted masonry stone concrete, so as to drain water collected by the pavement structure layer out of the subgrade settlement area.

Compared with the prior art, the beneficial effects of the utility model are that: the concrete pile is formed to have certain strength, the soft foundation is treated, and the graded broken stone pad is arranged above the plain concrete pile body, so that local materials can be obtained, the transportation is convenient, the construction cost is reduced, the construction process is simple, and the treatment effect is better.

Drawings

Fig. 1 is a schematic plan view of a device for treating road subgrade settlement according to an embodiment of the present invention;

fig. 2 is the utility model relates to an embodiment discloses a road bed settlement treatment device's section structure schematic diagram.

In the drawings, the correspondence between each component and the reference numeral is:

1. the method comprises the following steps of (1) a roadbed subsidence area, 2. a pavement crack, 11. a plain concrete pile body, 12. a graded broken stone cushion layer, 13. a pavement structure layer, and 14. a drainage facility.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. 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.

The invention is described in further detail below with reference to the accompanying drawings:

as shown in fig. 1 and fig. 2, according to the utility model provides a road bed settlement treatment device, include: the concrete pile comprises a plain concrete pile body 11, a graded broken stone cushion layer 12, a pavement structure layer 13 and a drainage facility 14; the pavement structure layer 13 is a pavement layer repaired aiming at the subgrade subsidence area 1; the graded broken stone cushion layer 12 is arranged below the pavement structure layer 13 of the subgrade settlement area 1, and graded broken stones with the thickness not less than 15cm are adopted as the graded broken stone cushion layer 12; the plain concrete pile body 11 is arranged at the bottom of the graded broken stone cushion layer 12, concrete filler is adopted in the plain concrete pile body 11 for vibrating and compacting, and the plain concrete pile body 11 extends into the bearing layer by not less than 1 meter; the drainage facilities 14 are side ditches or drainage ditches, and the drainage facilities 14 are built on the side of the pavement structure layer 13.

In this embodiment, the pavement structure layer 13 is formed by milling the pavement surface layer and then re-laying the pavement upper surface layer if the original pavement structure layer is an asphalt layer, and removing the damaged slab and then pouring the pavement structure layer 13 again if the original pavement structure layer is a concrete slab, according to the subgrade settlement degree on the basis of the original pavement structure layer 13.

Specifically, in the process of reinforcing by using the plain concrete pile, main design parameters are determined according to the construction scale of the subgrade subsidence area 1, the geological condition and the position of the pavement crack 2. According to the field drilling sampling result, the effective pile length should extend into the bearing stratum to be not less than 1.0 m, and the cement concrete filler in the pile hole should be vibrated and compacted. When the pile is formed, underground pipelines, pipelines and other facilities are avoided, C20 concrete can be used as the concrete, and if the filling height of the embankment is higher, the grade of the concrete can be properly improved.

Specifically, after the plain concrete pile body 11 has developed a certain strength, a graded broken stone cushion layer 12 is provided on the top of the pile body. The graded broken stone cushion layer 12 adopts graded broken stones, and the thickness is not less than 15 cm. The graded broken stone is a mixture composed of aggregates with different size fractions, and when the grading meets the specification of the technical specification, the graded broken stone is called as a graded aggregate. The graded aggregate comprises graded broken stone, graded broken gravel (a mixture of broken stone and gravel, and often super-sized particles in the gravel are broken down and then combined with the gravel to form broken gravel) and graded gravel (or graded gravel). The graded broken stones can be obtained locally according to the storage amount of local building materials, and the transportation is convenient.

Specifically, the drainage facility 14 is a road drainage facility 14 which is recovered or newly built after the treatment of the pile body and the road surface structure is completed. According to the road grade and the material condition of the place where the engineering is located, cast-in-place concrete and mortar masonry stone concrete can be selected for masonry. The drainage facility 14 generally adopts a side ditch or a drainage ditch form, collects the water on the road surface and the side slope and then leads the water out of the roadbed range, ensures that the roadbed is prevented from being invaded and damaged by water flow, and reduces the occurrence of diseases.

In the above embodiment, the pavement structure layer 13 is preferably a concrete layer or an asphalt layer laid after milling or dismantling the foundation subsidence area 1.

In the above embodiment, preferably, the graded crushed stones of the graded crushed stone mat layer 12 include coarse aggregates having a crush value of not more than 30% and fine aggregates having a content of needle-like particles of not more than 20%. The fine aggregate is mainly characterized in that the particle composition, the mud content and the addition amount of the stone chips are well controlled, and the continuous gradation is ensured.

In the above embodiment, the section of the plain concrete pile body 11 is preferably square, rectangular, circular or annular, which can be selected in consideration of convenience of mechanical hole forming. The outer diameter of the plain concrete pile body 11 is 20-60 cm, the length of the pile body can reach tens of meters, and the length of the pile body extending into the bearing layer is not less than 1 meter.

In the above embodiment, preferably, the plain concrete pile body 11 is formed by once pouring and vibrating compaction after the concrete filler is introduced into the pile hole, so as to prevent the pile from being broken, and ensure the pile body to be continuous and to have certain strength.

In the above embodiment, preferably, the arrangement manner of the plain concrete pile bodies 11 adopts an equilateral triangle arrangement, a quincunx arrangement or a square arrangement, and the independent foundation or the strip foundation can be arranged according to the shape and the width of the foundation.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a road bed settlement punishment processing device which characterized in that includes: the concrete pile comprises a plain concrete pile body, a graded broken stone cushion layer, a pavement structure layer and a drainage facility;

the pavement structure layer is a pavement layer repaired aiming at the subgrade subsidence area;

the graded broken stone cushion layer is arranged below the pavement structure layer of the subgrade settlement area, and graded broken stones with the thickness not less than 15cm are adopted;

the plain concrete pile body is arranged at the bottom of the graded broken stone cushion layer, concrete filler is adopted in the plain concrete pile body for vibrating and compacting, and the plain concrete pile body extends into the bearing layer for not less than 1 meter;

the drainage facilities are side ditches or drainage ditches, and the drainage facilities are built on the side edges of the pavement structure layer.

2. The device for treating subgrade settlement of claim 1, wherein said pavement structure layer is a concrete layer or an asphalt layer laid after milling or dismantling the subgrade settlement area.

3. The apparatus for treating roadbed subsidence of the road according to claim 1, wherein the graded crushed stones of the graded crushed stone cushion layer include coarse aggregates and fine aggregates, the coarse aggregates having a crushing value of not more than 30% and the needle-like particles having a content of not more than 20%.

4. The device for treating subgrade settlement of a road of claim 1, wherein the section of the plain concrete pile body is square, rectangular, circular or annular, and the outer diameter of the plain concrete pile body is 20-60 cm.

5. The device for treating the subgrade settlement of the road of claim 1 or 4, wherein the plain concrete pile body is formed by once pouring, vibrating and compacting after concrete filler is introduced into the pile hole.

6. The device for treating subgrade settlement of a road of claim 1, wherein the arrangement mode of the plain concrete pile bodies adopts an equilateral triangle arrangement, a quincunx arrangement or a square arrangement.

7. The device for treating road bed settlement according to claim 1, wherein the drainage facility is constructed by cast-in-place concrete and/or grouted masonry concrete to drain the water collected by the pavement structure layer out of the bed settlement area.

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