CN217352104U

CN217352104U - River course revetment structure adjacent to railway pier

Info

Publication number: CN217352104U
Application number: CN202220893552.XU
Authority: CN
Inventors: 陈杰; 陈东巨; 代汉超; 李鑫; 杨雪成; 柴永飞; 张奎
Original assignee: China Railway Shanghai Design Institute Group Co Ltd
Current assignee: China Railway Shanghai Design Institute Group Co Ltd
Priority date: 2022-04-18
Filing date: 2022-04-18
Publication date: 2022-09-02
Anticipated expiration: 2032-04-18

Abstract

The utility model belongs to the technical field of river course revetment construction technique and specifically relates to a river course revetment structure of neighbouring railway pier, including preceding, back double row bored concrete pile, this double row bored concrete pile is in the pile body supporting that the position of railway cushion cap set up is in on the railway cushion cap, connect through setting up the crown beam between each bored concrete pile of row in preceding, back double row bored concrete pile and constitute wholly, connect through setting up the tie beam between preceding, the back double row bored concrete pile and constitute wholly. The utility model has the advantages that: by replacing the existing damaged river revetment retaining wall with double rows of cast-in-place piles, the problem of construction of river revetment foundations adjacent to railway piers can be solved, and the influence of direct excavation of deep foundation pits on railway safety is avoided; the method has the advantages of safety, reliability, convenient construction, good effect, good technical economy, obvious social benefit, wide application prospect and high popularization and use values.

Description

River course revetment structure adjacent to railway pier

Technical Field

The utility model belongs to the technical field of river course revetment construction technique and specifically relates to a river course revetment structure of neighbouring railway pier mainly is applied to near the river revetment of railway pier and reforms transform, also can be applied to newly-built revetment.

Background

The revetment is built at the junction of the river water body edge and the land, and engineering measures are used for reinforcing the shoreside to stabilize the revetment so as to avoid the damage of natural or artificial factors, and the revetment can enhance the flood control capability of the river channel. In the long-term use process of the revetment, the wall body on the river revetment is corroded by weathering and river water, and the wall body on the river revetment is easy to crack and damage.

When the river course is strideed across to the railway, when the river course is very wide, for reducing the degree of difficulty of strideing across the river, the pier often sets up at river revetment edge, when the revetment live time appears destroying for a long time, needs to reform transform or rebuild the revetment near adjacent railway pier. At present, the more common method is:

firstly, abandon existing barricade and excavate newly-built barricade again. And (3) removing the existing retaining wall (the mortar rubble or brick retaining wall) at the edge of the river channel, and pouring the concrete retaining wall again when the cofferdam or the dry water is used. If the excavation depth is deep and the foundation pit excavation is close to a railway pier, the existing pier is influenced, and the railway operation safety is influenced by too large deformation.

And secondly, compressing the cross section of the river channel to build a new retaining wall. Due to the limitation of railway piers, a retaining wall is rebuilt in a riverway by clinging to the edge of the existing retaining wall, and the method is used for compressing the cross section of the river and influencing the flood-carrying capacity.

Disclosure of Invention

The utility model aims at providing a river course revetment structure of neighbouring railway pier according to above-mentioned prior art not enough, adopting the existing river course revetment barricade of double row bored concrete pile replacement, under the prerequisite of guaranteeing railway pier safety, realizing the transformation to the river course revetment barricade that has destroyed, still can be applied to newly-built revetment simultaneously.

The utility model discloses the purpose is realized accomplishing by following technical scheme:

the utility model provides a river course revetment structure of neighbouring railway pier sets up in the position that is neighbouring to the railway pier, the railway pier supports on the railway cushion cap of its below, the railway cushion cap supports on the railway pile foundation of its below, its characterized in that: this revetment structure includes preceding, back double row bored concrete pile, and this double row bored concrete pile is in the pile body supporting that the position of railway cushion cap set up is in on the railway cushion cap, connect through setting up the crown beam between each bored concrete pile of row in preceding, the back double row bored concrete pile and constitute wholly, connect through setting up the tie beam between preceding, the back double row bored concrete pile and constitute wholly.

The double-row bored concrete pile includes bored pile, revetment front-seat bored pile and revetment back row bored pile on the cushion cap, bored pile on the cushion cap with the revetment front-seat bored pile is arranged with arranging adjacent water, wherein bored pile supporting is in on the cushion cap on the railway cushion cap, revetment back row bored pile is located bored pile on the cushion cap with the rear side of revetment front-seat bored pile.

And a waterproof curtain is arranged on the inner side of the front row of cast-in-situ bored piles.

And a cast-in-situ surface layer is arranged on the outer side of the front row of cast-in-situ bored piles.

The utility model has the advantages that: by replacing the existing damaged river revetment retaining wall with double rows of cast-in-place piles, the problem of construction of river revetment foundations adjacent to railway piers can be solved, and the influence of direct excavation of deep foundation pits on railway safety is avoided; the method has the advantages of safety, reliability, convenient construction, good effect, good technical economy, obvious social benefit, wide application prospect and high popularization and use values.

Drawings

Fig. 1 is a plan view of the present invention;

FIG. 2 is a cross-sectional view along the revetment direction of the present invention;

FIG. 3 is a cross-sectional view of the position of the bored pile on the middle platform according to the present invention;

fig. 4 is a cross sectional view of the positions of the bored piles in the front and rear rows of the middle revetment of the present invention;

fig. 5 is a cross-sectional view of the cast-in-place surface layer of the adjacent water in the utility model.

Detailed Description

The features of the present invention and other related features are described in further detail below by way of example in conjunction with the accompanying drawings to facilitate understanding by those skilled in the art:

as shown in fig. 1-5, reference numerals 1-17 in the figures denote: the method comprises the following steps of railway pile foundation 1, railway bearing platform 2, railway pier 3, bored pile 4 on the bearing platform, bored pile 5 on the front row of the revetment, bored pile 6 on the rear row of the revetment, crown beam 7, tie beam 8, waterproof curtain 9, cast-in-place surface layer 10, river revetment sideline 11, ground line 12, river bottom 13, river lowest water level line 14, reserved inserted steel bar 15 of the crown beam, steel bar 16 along the revetment direction and implanted steel bar 17 of the bored pile.

Example (b): the river course revetment structure of neighbouring railway pier in this embodiment, it can be used to reform transform the existing revetment of river course, also can directly be applied to in the new-built revetment construction of river course. In the present embodiment, as shown in fig. 1, the river course revetment is adjacent to the railway pier 3, the railway pier 3 is supported on the railway platform 2 therebelow, and the railway platform 2 is supported on the railway pile foundation 1 therebelow, and the railway pile foundation 1 is a pile foundation.

Specifically, the river course revetment structure in this embodiment is as follows:

as shown in fig. 1 and 2, the front row cast-in-situ piles formed by the bored piles 4 on the bearing platform and the front row of bored piles 5 on the revetment are arranged in the same row along the side line 11 of the river revetment, and the inner sides of the two are both adjacent to the water surface. Wherein, the bottom elevation of the bored pile 4 on the bearing platform is arranged on the top surface of the railway bearing platform 2, so that the bored pile 4 on the bearing platform is supported on the railway bearing platform 2; the railway bearing platform 2 is provided with the bored piles 4 on the bearing platform in the range of entering the revetment. The revetment front row bored pile 5 is located the both sides of bored pile 4 on the cushion cap. And a rear row of bored piles 6 as rear row bored piles are located at the rear sides of the bored piles 4 on the bearing platform and the bored piles 5 in the front row of the revetment, away from one side of the river, and arranged in parallel at intervals of a certain distance from the bored piles 4 on the bearing platform and the bored piles 5 in the front row of the revetment. And the pile lengths and the pile diameters of the revetment front row drilled pile 5 and the revetment rear row drilled pile 6 are determined by calculation according to the protection depth and the stress of the geological condition.

And a waterproof curtain 9 is arranged on the inner side of the front row of the bored piles 5 on the revetment, and the waterproof curtain 9 is used for preventing river water from scouring soil behind the revetment through gaps among the front row of the bored piles 5. The waterproof curtain 9 can adopt methods of stirring piles, jet grouting piles, cement-water glass double-liquid grouting and the like for water stopping, is selected by combining geological conditions and construction machine conditions, and adopts a construction method of low pressure on soil mass as far as possible when the waterproof curtain is close to a railway, so that the influence on the railway is reduced.

As shown in fig. 1, the bored pile 4 on the bearing platform and the bored pile 5 in the front row of the revetment are integrally connected by one crown beam 7, and the bored pile 6 in the rear row of the revetment is integrally connected by another crown beam 7. The front and rear rows of crown beams 7 are connected by tie beams 8 to form a whole, so that the stability of the transformed revetment retaining wall structure is enhanced. In this embodiment, the top surface level of the crown beam 7 and the tie beam 8 is substantially level with the ground line 12 level of the revetment top.

As shown in fig. 5, the cast-in-place surface layer 10 is formed by reserving steel bars 15 for inserting bars in a crown beam, arranging steel bars 16 along the revetment direction and implanting steel bars 17 into a bored pile to form a steel bar framework, and then pouring C30 fine aggregate concrete at the position of the steel bar framework to form an adjacent water surface; the cast-in-place surface layer 10 can be connected with the crown beam 7, the bored piles 4 on the bearing platform and the bored piles 5 in the front row of the revetment to form a whole through the reserved steel bars, and further the structural strength of the cast-in-place surface layer is ensured.

In this embodiment, in order to meet the requirement of beauty, the bottom elevation of the cast-in-place surface layer 10 should be lower than the lowest water level 14 of the river by a certain distance, so as to avoid the exposure of the bored piles 4 on the bearing platform of the front row and the bored piles 5 on the front row of the revetment.

In the embodiment, in specific implementation: the bored pile 4 on the bearing platform, the bored pile 5 on the front row of the revetment, the bored pile 6 on the rear row, the crown beam 7 and the tie beam 8 are all of reinforced concrete structure.

And (3) vertically drilling downwards from the ground by using the bored piles 4 on the bearing platform, the bored piles 5 on the front row of the revetment and the bored piles 6 on the rear row, inserting a steel casing below a river bottom 13 for protection in the construction, and pouring bored pile reinforced concrete in the steel casing.

Although the conception and the embodiments of the present invention have been described in detail with reference to the drawings, those skilled in the art will recognize that various changes and modifications can be made therein without departing from the scope of the appended claims, and therefore, the description thereof is not repeated herein.

Claims

1. The utility model provides a river course revetment structure of neighbouring railway pier sets up in the position that is neighbouring to the railway pier, the railway pier supports on the railway cushion cap of its below, the railway cushion cap supports on the railway pile foundation of its below, its characterized in that: this revetment structure includes preceding, back double row bored concrete pile, and this double row bored concrete pile is in the pile body supporting that the position of railway cushion cap set up is in on the railway cushion cap, connect through setting up the crown beam between each bored concrete pile of row in preceding, the back double row bored concrete pile and constitute wholly, connect through setting up the tie beam between preceding, the back double row bored concrete pile and constitute wholly.

2. The riverway revetment structure adjacent to a railway pier according to claim 1, wherein: the double-row bored concrete pile includes bored pile, revetment front-seat bored pile and revetment back row bored pile on the cushion cap, bored pile on the cushion cap with the revetment front-seat bored pile is arranged with arranging adjacent water, wherein bored pile supporting is in on the cushion cap on the railway cushion cap, revetment back row bored pile is located bored pile on the cushion cap with the rear side of revetment front-seat bored pile.

3. The riverway revetment structure adjacent to a railway pier according to claim 1, wherein: and a waterproof curtain is arranged on the inner side of the front row of cast-in-situ bored piles.

4. The riverway revetment structure adjacent to a railway pier according to claim 1, wherein: and a cast-in-situ surface layer is arranged on the outer side of the front row of cast-in-situ bored piles.