CN218436431U

CN218436431U - Road surface lifting device for preventing bump at bridge head

Info

Publication number: CN218436431U
Application number: CN202222208874.9U
Authority: CN
Inventors: 崔腾跃
Original assignee: Beijing Hengxiang Hongye Foundation Reinforcement Technology Co Ltd
Current assignee: Beijing Hengxiang Hongye Foundation Reinforcement Technology Co Ltd
Priority date: 2022-08-22
Filing date: 2022-08-22
Publication date: 2023-02-03
Anticipated expiration: 2032-08-22

Abstract

The utility model provides a road surface lifting device for preventing bumping at bridge head, which comprises a plurality of rubber bags embedded in the roadbed layer of the bridge abutment transition section; further comprising: a plurality of grout tubes; and the grouting pipes are buried at the bottom of the roadbed layer of the bridge abutment transition section. The embodiment of the utility model provides a device can pour into the mode of slip casting liquid into to the road bed portion through the slip casting pipe of embedding in the intraformational rubber bag of road bed and embedding in the road bed bottom, and accurate lifting road surface settlement scope has alleviated the technical problem of the bridgehead of appearance jump car among the highway engineering that exists among the prior art.

Description

Road surface lifting device for preventing bump at bridge head

Technical Field

The utility model relates to a highway engineering technical field especially relates to a prevent road surface lifting device of bridgehead bumping.

Background

The problem of 'bump at the bridge head' is a great problem in road engineering, which not only affects the speed and comfort of driving, but also may even cause traffic safety accidents. Causes of bump at the bridge head:

(1) The settlement difference between the bridge head side and the road side is large, because the bridge construction uses the pile foundation and the bearing platform, the foundation strength is high, the settlement is small, and the road side is constructed due to backfilling, the bearing capacity of the natural foundation is relatively low, so that the settlement is relatively large.

(2) The reason for drainage is as follows: when water on the road surface cannot be discharged in time, rainwater seeps downwards, and various structural layers of the road surface and the embankment filler are corroded. Along with the rain wash, the finer particles of the embankment can be washed away by the rain, so that the bearing capacity of the embankment is reduced, and the phenomenon of differential settlement between the abutment and the road occurs.

(3) The construction quality reason is as follows: the differential settlement phenomenon between the abutment and the road can be caused by insufficient filling compactness, unqualified filling and the like.

SUMMERY OF THE UTILITY MODEL

In view of this, the application provides a road surface lifting device for preventing bridgehead vehicle jumping to alleviate the technical problem of bridgehead vehicle jumping in highway engineering in the prior art.

In a first aspect, an embodiment of the present invention provides a road surface lifting device for preventing bump at a bridge head, including a plurality of rubber bags embedded in a roadbed layer of a bridge abutment transition section; further comprising: a plurality of grout tubes; and the grouting pipes are embedded at the bottom of the roadbed layer of the bridge abutment transition section.

Further, the embedding positions of the plurality of grouting pipes are lower than the embedding positions of the plurality of rubber bladders.

Further, the vertical distance between the embedding positions of the rubber bags and the embedding positions of the grouting pipes is 1.5-2 m.

Further, the plurality of grouting pipes are horizontally and uniformly arranged.

Further, the distance between the plurality of grouting pipes is 1.5m-2m; the distance between the grouting pipe closest to the bridge abutment and the bridge abutment is 0.7m-1m.

Furthermore, grouting holes are uniformly distributed on the pipe wall of the grouting pipe, so that grouting liquid is injected into the inside of the roadbed layer of the bridge abutment transition section through the grouting holes.

Further, the rubber bags are horizontally and uniformly distributed.

Further, the distance between the plurality of rubber bags is 1.5m-2m; the vertical distance between the uppermost rubber bag and the road surface is 2.5m-3m.

Furthermore, a wall protection cylinder is arranged outside the rubber bag; the wall protection cylinder is formed by splicing two cylindrical sheets; the diameter of the rubber bag after grouting expansion is larger than the outer diameter of the wall protection cylinder.

Further, a rubber bag grouting pipe is arranged inside the rubber bag; and the pipe wall of the rubber bag grouting pipe is provided with grouting holes so that grouting liquid is injected into the rubber bag through the grouting holes.

The utility model provides a prevent road surface lifting device of bridgehead bumping, can pour into the mode of slip casting liquid into to the road bed portion through the slip casting pipe of embedding in the intraformational rubber bag of road bed and embedding in the road bed bottom, accurate lifting road surface settlement scope has alleviated the technical problem of bridgehead bumping that appears in the highway engineering that exists among the prior art.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic view of a road surface lifting device for preventing bump at the bridge head according to an embodiment of the present invention;

fig. 2 is a three-dimensional schematic view of an embedded grouting pipe according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a retaining wall cylinder according to an embodiment of the present invention;

fig. 4 is a schematic view of a rubber bladder according to an embodiment of the present invention.

Description of reference numerals:

1-a rubber bag; 11-a rubber bag grouting pipe; 2-grouting pipe; 3-protective wall cylinder.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the objects of the present invention, the following detailed description is given to the embodiments, structures, features and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.

Fig. 1 is a schematic view of a road surface lifting device for preventing bump at the bridge head according to an embodiment of the present invention. As shown in fig. 1, the device comprises a plurality of rubber bags 1, and a plurality of rubber bags 1 are embedded in the roadbed layer of the bridge abutment transition section. As shown in fig. 1, the apparatus further comprises: a plurality of grouting pipes 2; wherein, a plurality of slip casting pipes 2 are buried in the roadbed bottom of the bridge abutment transition section.

The utility model provides a prevent road surface lifting device of bridgehead skip car can pour into the mode of slip casting liquid into to the road bed layer through the slip casting pipe of embedding in the intraformational capsule of road bed and embedding in the road bed layer bottom, and accurate lifting road surface settlement range has alleviated the technical problem of bridgehead skip car that appears in the highway engineering that exists among the prior art.

Preferably, as shown in fig. 1, in the embodiment of the present invention, the embedding positions of the plurality of grouting pipes 2 are lower than the embedding positions of the plurality of rubber bladders 1.

Alternatively, the vertical distance between the embedded positions of the plurality of rubber bladders 1 and the embedded positions of the plurality of grouting pipes 2 is 1.5m-2m.

Fig. 2 is a three-dimensional schematic diagram of an embedded grouting pipe according to an embodiment of the invention. As shown in fig. 2, a plurality of grouting pipes 2 are horizontally and uniformly arranged.

Preferably, in the embodiment of the present invention, the distance between the plurality of grouting pipes 2 is 1.5m-2m; the distance between the grouting pipe closest to the bridge abutment and the bridge abutment is 0.7m-1m. And (4) judging the single/double-sided arranged grouting pipes according to the geological working conditions and the load condition of the vehicle above.

The embodiment of the utility model provides an in, evenly distributed slip casting hole on the pipe wall of slip casting pipe 2 to make the slip casting liquid pour into the inside of the roadbed portion of abutment changeover portion through the slip casting hole.

As shown in fig. 1, in the embodiment of the present invention, a plurality of rubber bladders 1 are horizontally and uniformly arranged.

Preferably, the distance between the plurality of rubber bladders 1 is 1.5m-2m; if multiple rows are needed, the vertical distance is 2m-4m, wherein the vertical distance between the uppermost rubber bag and the road surface is 2.5m-3m.

In the embodiment of the present invention, in order to prevent the bag of the rubber bag from being punctured, the outer side of the rubber bag is provided with a retaining wall cylinder 3. Fig. 3 is a schematic cross-sectional view of a retaining wall cylinder according to an embodiment of the present invention. As shown in fig. 3, the retaining wall cylinder 3 is formed by splicing two cylindrical sheets; the diameter of the rubber bag 2 after grouting expansion is larger than the outer diameter of the wall protection cylinder.

Fig. 4 is a schematic view of a rubber bladder according to an embodiment of the present invention. As shown in fig. 4, a rubber bag grouting pipe 11 is arranged inside the rubber bag 1; the wall of the rubber bag grouting pipe 11 is provided with grouting holes so that grouting liquid is injected into the rubber bag through the grouting holes.

If the bridgehead is differentially settled, the pavement is accurately lifted by two steps.

The first part aims to utilize the pre-embedded grouting pipes for grouting and reinforce the soft foundation of the road; the second part adopts pre-buried rubber bag slip casting, and the main objective is for accurate lifting settlement range. The detailed steps are as follows:

a first part:

1. determining the depth of a soft soil layer in a settlement area inside the road, designing an external grouting machine to be connected with a grouting pipe, and starting grouting at an appointed grouting point of the embedded grouting pipe.

2. And when the designated grouting point reaches the designed grouting amount, disconnecting the grouting machine, and stopping grouting to reinforce the soft foundation in the road settlement range.

A second part:

determining the range of the reinforced soft soil layer in the settlement area inside the road, designing an external grouting machine to be connected with the rubber bag, grouting in the pre-buried specified rubber bag, and recovering the settlement pavement of the road to the original ground elevation. And (5) disconnecting the grouting machine after the subsided pavement is restored to the original ground elevation, and stopping grouting. And sealing the grouting port.

Can know by the above description, the utility model provides a prevent road surface lifting device of bridgehead bumping, including pre-buried slip casting pipe and the rubber bag of setting in the abutment changeover portion, the slip casting pipe sets up in the bottom of roadbed layer, and the rubber bag sets up in the roadbed layer. When the road surface is settled, in the first step, grouting is performed in the lower grouting pipe, so that the bearing capacity of the foundation can be improved; and secondly, grouting is performed on the rubber bag, so that the settlement of the road surface can be accurately promoted. Because grouting pipe and rubber bag all pre-buried in the abutment changeover portion, the problem takes place can direct inside slip casting, need not to break off the traffic and can realize the maintenance of doing over again.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above preferred embodiment, it is not intended to limit the present invention, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, and any introduction modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention will still fall within the scope of the technical solution of the present invention.

Claims

1. A road surface lifting device for preventing bump at bridge head comprises a plurality of rubber bags, wherein the rubber bags are embedded in a roadbed layer of a bridge abutment transition section; it is characterized by also comprising: a plurality of grout tubes; and the grouting pipes are embedded at the bottom of the roadbed layer of the bridge abutment transition section.

2. The device for preventing bump at bridge head as claimed in claim 1, wherein the embedding position of the plurality of grouting pipes is lower than the embedding position of the plurality of rubber bags.

3. The device for preventing bump at bridge head of claim 2, wherein the vertical distance between the embedding position of the plurality of rubber capsules and the embedding position of the plurality of grouting pipes is 1.5m-2m.

4. The device for preventing bump at bridge head of claim 1, wherein the plurality of grouting pipes are horizontally and uniformly arranged.

5. The device for preventing bump at bridge head of claim 4, wherein the distance between the plurality of grouting pipes is 1.5m-2m; the distance between the grouting pipe closest to the bridge abutment and the bridge abutment is 0.7m-1m.

6. The device for preventing the road surface from being lifted by the bump at the bridge head as claimed in claim 5, wherein grouting holes are uniformly distributed on the pipe wall of the grouting pipe, so that grouting liquid is injected into the inside of the roadbed layer of the bridge abutment transition section through the grouting holes.

7. The device for preventing bump at bridge head as claimed in claim 1, wherein the rubber bags are horizontally and uniformly arranged.

8. The device for preventing bump at bridge head of claim 7, wherein the distance between the plurality of rubber bags is 1.5m-2m; the vertical distance between the uppermost rubber bag and the road surface is 2.5-3 m.

9. The device for preventing bump at bridge head of claim 1, wherein a wall-protecting cylinder is arranged outside the rubber bag; the wall protection cylinder is formed by splicing two cylindrical sheets; the diameter of the rubber bag after grouting expansion is larger than the outer diameter of the wall protection cylinder.

10. The device for preventing the road surface from being lifted by the bump at the bridge head as claimed in claim 1, wherein a rubber bag grouting pipe is arranged in the rubber bag; and the pipe wall of the rubber bag grouting pipe is provided with grouting holes so that grouting liquid is injected into the rubber bag through the grouting holes.