CN211849553U

CN211849553U - Trestle anchoring pier foundation structure

Info

Publication number: CN211849553U
Application number: CN201922245961.XU
Authority: CN
Inventors: 梁磊磊; 徐涛; 徐财进; 张明闪; 郭恒; 孙科; 韩伦
Original assignee: CCCC SHEC Second Engineering Co Ltd
Current assignee: CCCC SHEC Second Engineering Co Ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-11-03
Anticipated expiration: 2029-12-16

Abstract

The utility model provides a landing stage anchor mound foundation structure, include: the system comprises four steel pipe piles and two auxiliary piles, wherein the four steel pipe piles are distributed in a rectangular array, the lower ends of the steel pipe piles are anchored in the ground, the tops of the left and right adjacent steel pipe piles are connected with pile top beams, and bailey main beams are erected on the pile top beams; an inclined rod and a parallel connection are arranged between the adjacent front and back steel pipe piles; the two auxiliary piles are vertically arranged on the outer sides of the left steel pipe pile and the right steel pipe pile respectively, the lower ends of the two auxiliary piles are anchored in the ground, and an inclined rod and a parallel connection are arranged between each auxiliary pile and the two steel pipe piles respectively. The utility model discloses a landing stage anchor mound foundation structure connects steel-pipe pile and supplementary stake from hexagon contact structure to connect into whole through anchor system and rock stratum, the structure is though simple, but can solve deep water, bare rock, torrent district landing stage stability problem.

Description

Trestle anchoring pier foundation structure

Technical Field

The utility model belongs to landing stage foundation construction field, concretely relates to landing stage anchor mound foundation structure.

Background

With the continuous progress of science and technology, bridge construction is developed rapidly, particularly since the twenty-first century, the bridge construction industry is developed vigorously, large-span bridges spanning inland rivers and large canyons are inexhaustible, and the development trend is continued for a long time in the future. The foundation arrangement of the trestle in the deepwater, bare rock and torrent areas is a problem which needs to be overcome all the time in the construction of the bridge in the water, and the previous foundation of the trestle in the deepwater, bare rock and torrent areas usually adopts the mode of adding the anchor rod at the bottom of the steel pipe pile to prevent the trestle from overturning. When the cantilever of the trestle steel pipe pile foundation is large, the foundation is of a flexible structure, and the trestle is greatly deformed by the traffic of engineering vehicles, the rapid stream and the like, so that the structure is safe and unfavorable.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is an object of the present invention to provide a trestle anchoring pier foundation structure for overcoming the above problems or at least partially solving or alleviating the above problems.

The utility model provides a landing stage anchor mound foundation structure, include: the system comprises four steel pipe piles and two auxiliary piles, wherein the four steel pipe piles are distributed in a rectangular array, the lower end of each steel pipe pile is anchored in the ground, a pile top beam is connected between the tops of the left and right adjacent steel pipe piles, and a Bailey main beam is erected on the pile top beam; an inclined rod and a parallel connection are arranged between the front adjacent steel pipe pile and the rear adjacent steel pipe pile; the two auxiliary piles are vertically arranged on the outer sides of the left steel pipe pile and the right steel pipe pile respectively, the lower ends of the auxiliary piles are anchored in the ground, and an inclined rod and a parallel connection are arranged between each auxiliary pile and the two steel pipe piles respectively.

Preferably, each auxiliary pile is equidistant from the two adjacent steel pipe piles in a straight line.

Preferably, the two auxiliary piles are symmetrically arranged on two sides of the four steel pipe piles.

Preferably, anchor rods are arranged in the lower ports of the steel pipe pile and the auxiliary pile, one end of each anchor rod is inserted into the ground, the other end of each anchor rod is poured into the steel pipe pile or the auxiliary pile through concrete, the anchor rods are divided into three groups, and the three groups of anchor rods are distributed in a triangular array.

Preferably, the lower ends of the steel pipe pile and the auxiliary pile are inserted into the ground layer, and the insertion depth is 1-2 m.

Preferably, the insertion length of the anchor rod in the ground layer is 1.5-2.5m, and the length of the anchor rod left in the steel pipe pile or the auxiliary pile is 0.8-1.3 m.

The utility model anchors the steel pipe piles and the rock stratum together by utilizing the bond stress between the anchoring concrete and the four steel pipe piles and the friction force between the anchor rods and the rock stratum, thereby enhancing the stability of the trestle in the torrent; meanwhile, two rows of steel pipe pile foundations and the auxiliary piles are connected into an integral hexagonal foundation structure by arranging the two auxiliary piles, so that the problem of insufficient stability of the trestle in deep water, bare rocks and torrent areas is solved, and the safety of the trestle in the area is improved; the anchor rod is utilized to realize friction type connection between the trestle foundation and the rock stratum, so that the anti-overturning stability of the trestle under the action of a rapid stream is enhanced.

Drawings

FIG. 1 is a schematic view of the foundation structure of the trestle anchoring pier of the utility model;

fig. 2 is a schematic view showing a distribution structure of the steel pipe pile and the auxiliary pile in fig. 1.

In the above figures: 1, steel pipe piles; 2, auxiliary piles; 3, pile top beam; 4 bailey main beams; 5, a diagonal rod and a parallel connection; 6, anchoring the bolt; 7 concrete.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Detailed Description

Example 1

Referring to fig. 1 and 2, an embodiment of the first aspect of the present invention provides a trestle anchoring pier foundation structure, including: the system comprises four steel pipe piles 1 and two auxiliary piles 2, wherein the four steel pipe piles 1 are distributed in a rectangular array, the lower end of each steel pipe pile 1 is anchored in the ground, a pile top beam 3 is connected between the tops of the left and right adjacent steel pipe piles 1, and a Bailey main beam 4 is erected on the pile top beam 3; an inclined rod and a parallel connection 5 are arranged between the front and the back adjacent steel pipe piles 1; two auxiliary piles 2 are vertically arranged on the outer sides of the left and right pairs of steel pipe piles 1 respectively, the lower ends of the auxiliary piles are anchored in the ground, and an inclined rod and a parallel connection 5 are arranged between each auxiliary pile 2 and the two steel pipe piles 1 respectively.

Four steel-pipe piles 1 are distributed in a rectangular array, and are fixedly welded and connected into a whole through an inclined rod and a parallel connection 5, two auxiliary piles 2 are fixedly connected into a whole through the inclined rod and the parallel connection 5 and two steel-pipe piles 1 on two sides of the four steel-pipe piles 1, a trestle foundation with a hexagonal structure is formed, the structural strength of the trestle foundation is improved, the problem that the stability of the trestle in deep water, bare rocks and an torrent area is insufficient is solved, the lower ends of each steel-pipe pile 1 and each auxiliary pile 2 are anchored in the ground, friction type connection is achieved between the trestle foundation and the rock stratum through an anchor rod 6, and the overturning resistance stability of the trestle foundation under the action of torrent is enhanced.

Example 2

Referring to fig. 2, on the basis of embodiment 1, each auxiliary pile 2 has the same straight-line distance from the two steel pipe piles 1 adjacent to it.

The lengths of the two groups of diagonal rods and the parallel connection 5, which are respectively connected with the front and the rear steel pipe piles 1, of the auxiliary pile 2 are equal, so that the front and the rear balance of the support and the traction of the two steel pipe piles 1 can be ensured.

Example 3

Referring to fig. 1 and 2, in example 2, two auxiliary piles 2 are symmetrically arranged on both sides of four steel pipe piles 1.

The distances between the two auxiliary piles 2 and the two steel pipe piles 1 adjacent to each other in the front and back of the side where the distance is from the horizontal direction are equal, so that the support and the traction of the four steel pipe piles 1 by the two auxiliary piles 2 are balanced in the left and right directions.

Example 4

Referring to fig. 2, on the basis of embodiment 1, anchor rods 6 are arranged in the lower ports of the steel pipe pile 1 and the auxiliary pile 2, one ends of the anchor rods 6 are inserted into the ground, the other ends of the anchor rods 6 are poured in the steel pipe pile 1 or the auxiliary pile 2 through concrete 7, the anchor rods 6 are divided into three groups, and the three groups of anchor rods 6 are distributed in a triangular array.

The quantity of 6 stock in every steel-pipe pile 1 and the auxiliary pile 2 is nine to three stock 6 is a set of, and three stock 6 of group are triangular array and distribute, and three stock 6 in every group is triangular array and distributes equally, can improve the stability of 6 anchor joints of stock.

Example 5

Referring to fig. 1, the lower ends of a steel pipe pile 1 and an auxiliary pile 2 are inserted into the ground, and the insertion depth is 1-2 m.

The vibration sinking depth of the steel pipe pile 1 and the auxiliary pile 2 is preferably 1.5m, and the steel pipe pile 1 and the auxiliary pile 2 are ensured to be in a vertical state.

Example 6

Referring to fig. 1, the insertion length of the anchor rods 6 in the ground is 1.5-2.5m, and the length of the anchor rods 6 left in the steel pipe pile 1 or the auxiliary pile 2 is 0.8-1.3 m.

The depth of the anchor rod 6 inserted into the ground layer is preferably 2m, the length of the anchor rod 6 left in the steel pipe pile 1 or the auxiliary pile 2 is preferably 1m, and the anchor rod is completely covered and poured by the concrete 7.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims. The components and structures of the present embodiments that are not described in detail are well known in the art and do not constitute essential structural elements or elements.

Claims

1. The utility model provides a landing stage anchor mound foundation structure which characterized in that includes: the steel pipe pile structure comprises four steel pipe piles (1) and two auxiliary piles (2), wherein the four steel pipe piles (1) are distributed in a rectangular array, the lower end of each steel pipe pile (1) is anchored in the ground, a pile top beam (3) is connected between the tops of the left and right adjacent steel pipe piles (1), and a Bailey main beam (4) is erected on the pile top beam (3); an inclined rod and a parallel connection (5) are arranged between the front and the back adjacent steel pipe piles (1); the two auxiliary piles (2) are vertically arranged on the outer sides of the left steel pipe pile (1) and the right steel pipe pile (1) respectively, the lower ends of the auxiliary piles are anchored in the ground, and an inclined rod and a parallel connection (5) are arranged between each auxiliary pile (2) and the two steel pipe piles (1) respectively.

2. Trestle anchoring pier foundation structure according to claim 1, characterized in that each auxiliary pile (2) is equidistant from the two steel pipe piles (1) to which it is close.

3. The foundation structure of the trestle anchoring pier of claim 2, wherein two auxiliary piles (2) are symmetrically arranged on two sides of four steel pipe piles (1).

4. The trestle anchoring pier foundation structure according to claim 1, wherein anchor rods (6) are arranged in the lower ports of the steel pipe pile (1) and the auxiliary pile (2), one ends of the anchor rods (6) are inserted into the ground, the other ends of the anchor rods (6) are poured in the steel pipe pile (1) or the auxiliary pile (2) through concrete (7), the anchor rods (6) are divided into three groups, and the three groups of anchor rods (6) are distributed in a triangular array.

5. Trestle anchoring pier foundation structure according to claim 4, characterized in that the lower ends of the steel pipe pile (1) and the auxiliary pile (2) are inserted into the ground layer to a depth of 1-2 m.

6. Trestle anchoring pier foundation structure according to claim 4, characterized in that the insertion length of the anchor rods (6) in the ground is 1.5-2.5m, and the length of the anchor rods (6) left in the steel pipe pile (1) or the auxiliary pile (2) is 0.8-1.3 m.