CN219327071U

CN219327071U - Combined hydraulic structure

Info

Publication number: CN219327071U
Application number: CN202320601469.5U
Authority: CN
Inventors: 陈光明; 刘进; 莫兆敏; 李建习
Original assignee: Chongzuo Port And Shipping Development Center; PowerChina Zhongnan Engineering Corp Ltd
Current assignee: Chongzuo Port And Shipping Development Center; PowerChina Zhongnan Engineering Corp Ltd
Priority date: 2023-03-24
Filing date: 2023-03-24
Publication date: 2023-07-11
Anticipated expiration: 2033-03-24

Abstract

The utility model relates to a combined hydraulic structure which comprises a plurality of steel sheet piles and a plurality of filling piles, wherein the steel sheet piles are continuously arranged along a coast, the filling piles are arranged on one side of the steel sheet piles away from the coast, and pier blocks are arranged above the filling piles and the steel sheet piles. The utility model can effectively avoid water and soil loss and improve the utilization rate of coastline; the excavation and backfill amount is small, and the pollution to the surrounding environment is small; the construction is simple, the construction period can be shortened, and the construction cost is reduced.

Description

Combined hydraulic structure

Technical Field

The utility model relates to the technical field of port engineering, in particular to a combined hydraulic structure.

Background

Damage to the marine and land ecosystems has been caused by large-scale reclamation activities for a long time. Some of these items form part of an irregular shoreline for historical reasons. For some irregular coastlines, not only an open structure is adopted to avoid enclosing the sea, but also a vertical hydraulic structure is adopted to enclose and cover the land area. The combined structure of the gravity type vertical retaining wall and the high pile abutment is adopted according to the traditional design method, so that a large amount of excavation and backfilling can be caused, the engineering cost is high, and the environmental pollution is serious.

The Chinese patent No. 209958290U discloses a revetment structure with pile foundation, which comprises a pile foundation, a beam, an inverted U-shaped breakwater, a cross beam and a longitudinal beam, wherein the beam is arranged at the top of the pile foundation, the inverted U-shaped breakwater is arranged at the top of the beam, the cross beam and the longitudinal beam are connected with the inverted U-shaped breakwater into a whole, the top surfaces of the cross beam and the longitudinal beam are provided with surface layers, the breakwater is arranged at the end parts of the inverted U-shaped breakwater, the breakwater is connected with the longitudinal beam, a first stone and a second stone are paved at the lower part of the pile foundation from the mud surface line, and the second stone is paved at the top of the first stone. The shore protection structure can achieve the effect of eliminating waves, but the utilization rate of the coast and the practicability of the hydraulic structure are low, and water and soil loss cannot be effectively avoided.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a combined hydraulic structure which not only effectively avoids water and soil loss, but also improves the practicability of the hydraulic structure.

The technical scheme adopted by the utility model is as follows:

the utility model provides a combination hydraulic structure, includes a plurality of sections steel sheet piles, a plurality of bored concrete pile, the steel sheet pile sets up along coast in succession, the bored concrete pile sets up in the steel sheet pile one side of keeping away from the coast, the top of bored concrete pile and steel sheet pile is provided with the pier.

A plurality of sections of steel sheet piles which are continuously arranged along the coast form a shielding space, so that the coast can be prevented from being washed by waves and water flow, and water and soil loss can be avoided; the steel sheet piles and the cast-in-place piles are arranged below the pier to support the pier, the pier can be used as a wharf platform, and the pier has high practicability due to the adoption of a high pile pier open structure; the structure has the advantages of less excavation and backfill amount, simple construction, and capability of protecting the coast, avoiding water and soil loss and improving the utilization rate of the coast and the practicability of the hydraulic structure.

Further, the length of the steel sheet pile=the bottom elevation of the abutment-the bearing layer elevation +a, wherein 1.0m is more than or equal to a is more than or equal to 0.5m. The bearing layer is a rock soil layer bearing the pile head part of the pile foundation, and the rock soil layer with high bearing capacity is selected as the bearing layer.

Further, the length of the bored concrete pile=the bottom elevation of the abutment-the elevation of the bearing layer +b, wherein b is more than or equal to 0.1m.

Further, the tops of the steel sheet piles and the cast-in-place piles are embedded in the abutment and are connected with the abutment into a whole.

Further, the top of the steel sheet pile and the edge of the abutment are provided with a distance.

Further, the steel sheet pile, the cast-in-place pile and the abutment are cast into a whole. The embedded pier at the top of the steel sheet pile is not less than 0.5m, the outer wrapping width of the top of the steel sheet pile, which is away from the side line of the pier, is not less than 0.4m, and reinforcing steel bars are arranged along the peripheral side of the steel sheet pile for reinforcement. The length of the cast-in-situ pier embedded in the top of the cast-in-situ pier is not less than 0.1m, and the length of the reinforcing steel bar of the pile top of the cast-in-situ pier extending into the cast-in-situ pier is not less than 40 times of the diameter of the main steel bar. Thus, the overall stability of the steel sheet pile, the cast-in-situ pile and the abutment can be enhanced.

Further, the steel sheet pile is formed by combining a plurality of first steel sheet units in an end-to-end connection mode.

Further, the cross section of first steel sheet unit is the Z shape, and the both ends of first steel sheet unit along the horizontal direction are provided with first fore shaft and second fore shaft respectively, first fore shaft and second fore shaft assorted.

Further, the steel sheet piles are provided with a plurality of sections, and the sections of steel sheet piles are connected together. Thus, a surrounding structure is formed, and the number of the steel sheet piles is determined according to the condition of the construction site.

Further, a second steel plate unit or a third steel plate unit is arranged at the connecting position of the two sections of steel plate piles.

Further, the second steel plate unit comprises a first steel plate unit and a third locking notch, the third locking notch is arranged at one end of the first steel plate unit, which is far away from the second locking notch, the third locking notch is located at one side of the first steel plate unit, which is far away from the first locking notch, and the third locking notch is matched with the second locking notch.

Further, the third steel plate unit comprises a first steel plate unit and a fourth locking notch, the fourth locking notch is arranged at one end, far away from the second locking notch, of the first steel plate unit, the fourth locking notch is located at one side, far away from the first locking notch, of the first steel plate unit, and the fourth locking notch is matched with the first locking notch.

Further, include a plurality of caissons, the corner position that steel sheet pile and caisson are connected sets up first stake, first stake sets up in the steel sheet pile one side towards the coast. Thus, mud leakage or sand leakage in the later stage is avoided.

Optionally, the first pile is a stirring pile or a high-pressure jet grouting pile.

Compared with the prior art, the utility model has the beneficial effects that: not only can effectively avoid water and soil loss, but also can improve the practicability of the hydraulic structure; the utility model can reduce the excavation and backfill amount and has little pollution to the surrounding environment; the steel sheet piles are arranged continuously to enclose the cast-in-place pile, so that the structure is attractive; the construction sequence is simplified, the engineering progress is quickened, and the engineering cost is reduced.

Drawings

FIG. 1 is a schematic plan view of the present utility model;

FIG. 2 is a schematic diagram of the structure of the present utility model;

FIG. 3 is a schematic plan view of a first steel sheet unit according to the present utility model;

FIG. 4 is an enlarged schematic view at A in FIG. 1;

fig. 5 is an enlarged schematic view at B in fig. 1.

Reference numerals illustrate: 1. steel sheet pile, 2, cast-in-place pile, 3, pier, 31, pier land side line, 32, pier sea side line, 4, seaside line, 5, caisson, 6, first pile, 7, first steel sheet unit, 701, first locking notch, 702, second locking notch, 703, third locking notch, 704, fourth locking notch, 8, wharf yard.

Detailed Description

The utility model will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. For convenience of description, the words "upper", "lower", "left" and "right" are used hereinafter to denote only the directions corresponding to the upper, lower, left, and right directions of the drawings, and do not limit the structure.

Referring to fig. 1 and 2, a combined hydraulic structure comprises a plurality of sections of steel sheet piles 1, a plurality of cast-in-place piles 2 and a pier 3, wherein the sections of steel sheet piles 1 and the cast-in-place piles 2 are arranged in series, the pier 3 is arranged above the steel sheet piles 1 and the cast-in-place piles 2, the steel sheet piles 1 are arranged in series along the coast below the pier 3, and the cast-in-place piles 2 are arranged on one side, away from the coast, of the steel sheet piles 1.

The steel sheet pile 1 and the cast-in-place pile 2 are provided with intervals, the cast-in-place piles 2 are provided with a plurality of rows, and the adjacent cast-in-place piles 2 are provided with intervals.

The bottom of the cast-in-place pile 2 penetrates into a bearing layer of soil, and the bottom of the steel sheet pile 1 penetrates into medium dense sand. The filling pile 2 adopts a steel pipe pile or a large pipe pile, and the filling pile 2 is a main structure for mainly resisting horizontal force and vertical force. The steel sheet pile 1 is a main structure that mainly resists earth pressure and forms an enclosure. The steel sheet pile 1 adopts a pressed pile sinking mode, and the cast-in-place pile 2 adopts a drilling or punching pile forming mode.

As shown in fig. 3, the steel sheet pile 1 includes a first steel sheet unit 7, the first steel sheet unit 7 is a Z-shaped section, one end of the first steel sheet unit 7 is provided with a first locking notch 701, the other end of the steel sheet pile unit 7 is provided with a second locking notch 702, and the first locking notch 701 is matched with the second locking notch 702. The first locking notch 701 of one steel sheet pile unit is connected with the second locking notch 702 of the other steel sheet pile unit to form a U-shaped structure, and the plurality of steel sheet pile units 7 are sequentially connected in this way, so that the continuous arrangement of the steel sheet piles 1 is realized.

As shown in fig. 4, the connection position of the steel sheet piles 1 of different sections is provided with a second steel sheet unit, one end of the second steel sheet unit is provided with a second locking notch 702 identical to the first steel sheet unit 7, the other end of the second steel sheet unit is provided with a third locking notch 703 and a first locking notch 701 identical to the first steel sheet unit 7, the third locking notch 703 and the first locking notch 701 are respectively arranged at the left side and the right side of the second steel sheet unit, and the third locking notch 703 is matched with the second locking notch 702. The first notch 701 of the second steel plate unit is connected to the second notch 702 of the adjacent first steel plate unit 7, and the third notch 703 of the second steel plate unit is connected to the second notch 702 of the adjacent first steel plate unit.

As shown in fig. 5, according to the difference of the connection positions of the steel sheet piles 1 of different sections, a third steel sheet unit is provided, one end of the third steel sheet unit is provided with a second locking notch 702 identical to the first steel sheet unit 7, the other end of the third steel sheet unit is provided with a fourth locking notch 704 and a first locking notch 701 identical to the first steel sheet unit 7, the first locking notch 701 and the fourth locking notch 704 are respectively arranged at the left side and the right side of the third steel sheet unit, and the fourth locking notch 704 is matched with the first locking notch 701. The second notch 702 of the third steel plate unit is connected to the first notch 701 of the adjacent first steel plate unit 7, and the fourth notch 704 of the third steel plate unit is connected to the first notch 701 of the adjacent first steel plate unit 7.

The positions where the steel sheet piles 1 and the cast-in-place piles 2 are connected with the abutment 3 are embedded into the abutment 3 and are cast into a whole with the abutment 3.

The steel sheet pile 1 is provided with a plurality of sections, and the steel sheet piles 1 are connected together in sequence.

As shown in fig. 1, a first pile 6 is arranged at the corner formed by the connection of the section of steel sheet pile 1 and the caisson 5, and the first pile 6 is positioned on the side of the steel sheet pile 1 facing the land. The first pile 6 is a high pressure jet grouting pile. The diameter of the jet grouting pile is 800mm, the lap joint width of the jet grouting pile is 200mm, 6 layers of high-pressure jet grouting piles are manufactured from sea side to land side, and the lap joint width between each two layers is 200mm. And after the construction of the jet grouting pile is finished, the pile head is chiseled to 2.9m elevation, and geotechnical cloth is paved at the part above +2.9m after the chiseling and the structure is inverted.

The top elevation of the abutment 3 is 4.9m, the thickness of the abutment 3 is 1.5m, a pile foundation adopts a cast-in-place pile with the diameter of 1400mm, and the pile bottom elevation is-21.7 m. The joint of the high pile abutment and the land side adopts a vertical anchor-free steel sheet pile structure, wherein the top elevation of the steel sheet pile 1 is 3.9m, and the bottom elevation is-14.0 m. The upper part of the steel sheet pile 1 is connected with the abutment 3, the upper part of the steel sheet pile 1 stretches into the abutment by 0.5m, and the distance between the steel sheet pile 1 and the outer side of the abutment is 0.4m. And excavating part backfill coarse sand in the range of 15m on the land side behind the steel sheet pile 1 and vibrating and punching to be compact.

A combined hydraulic structure comprises the following concrete construction methods:

s1, land foundation treatment;

s2, pile sinking construction;

s3, constructing a cast-in-situ abutment;

s4, constructing a reverse filtering structure;

s5, backfilling construction is carried out after the steel sheet piles.

In step S1, in order to solve the problem of local soil liquefaction, local areas on the land side of the steel sheet pile are subjected to vibration impact compaction, so that the standard number of the standard impacts is more than or equal to 15.

In the step S2, the cast-in-place pile is mechanically drilled to strong weathered rock on the engineering site, the steel pile casing is sunk to a water-impermeable layer, the steel reinforcement cage is lowered to be no less than 1m below a more compact sand layer, and underwater concrete is poured to form the pile. The steel sheet pile adopts a vibrating hammer to sink the pile, and the bottom of the steel sheet pile is deep into medium dense sandy soil.

In step S3, the cast-in-place pile and the steel sheet pile are cast into a whole through a cast-in-place pier. The embedded pier at the top of the steel sheet pile is not less than 0.5m, the outer wrapping width of the top of the steel sheet pile, which is away from the side line of the pier, is not less than 0.4m, and reinforcing steel bars are arranged along the peripheral side of the steel sheet pile for reinforcement. The length of the cast-in-situ pier embedded in the top of the cast-in-situ pier is not less than 0.1m, and the length of the reinforcing steel bar of the pile top of the cast-in-situ pier extending into the cast-in-situ pier is not less than 40 times of the diameter of the main steel bar.

In step S4, a reverse filtering drainage prism is arranged near the land side drainage pipe of the steel sheet pile.

The foregoing examples are set forth in order to provide a more thorough description of the present utility model, and are not intended to limit the scope of the utility model, since modifications of the utility model in various equivalent forms will occur to those skilled in the art upon reading the present utility model, and are within the scope of the utility model as defined in the appended claims.

Claims

1. The utility model provides a combination hydraulic structure, includes a plurality of sections steel sheet pile (1), a plurality of bored concrete pile (2), its characterized in that, steel sheet pile (1) set up along coast in succession, bored concrete pile (2) set up in one side that the coast was kept away from to steel sheet pile (1), the top of bored concrete pile (2) and steel sheet pile (1) is provided with pier (3).

2. A combined hydraulic structure according to claim 1, characterized in that the tops of the steel sheet piles (1) and the cast-in-place piles (2) are embedded in the abutment (3) and are integrally connected with the abutment (3).

3. A combined hydraulic structure according to claim 1, characterized in that the steel sheet pile (1) is formed by a number of first steel sheet elements (7) joined end to end.

4. A combined hydraulic structure according to claim 3, wherein the cross section of the first steel plate unit (7) is Z-shaped, two ends of the first steel plate unit (7) along the horizontal direction are respectively provided with a first locking opening (701) and a second locking opening (702), and the first locking opening (701) and the second locking opening (702) are matched.

5. A combined hydraulic structure according to claim 4, characterized in that the position where the two steel sheet piles (1) are connected is provided with a second or third steel sheet unit.

6. The combined hydraulic structure according to claim 5, wherein the second steel plate unit comprises a first steel plate unit (7) and a third locking notch (703), the third locking notch (703) is arranged at one end of the first steel plate unit (7) far away from the second locking notch (702), the third locking notch (703) is positioned at one side of the first steel plate unit (7) far away from the first locking notch (701), and the third locking notch (703) is matched with the second locking notch (702).

7. The combined hydraulic structure according to claim 5, wherein the third steel plate unit comprises a first steel plate unit (7) and a fourth locking notch (704), the fourth locking notch (704) is arranged at one end of the first steel plate unit (7) far away from the second locking notch (702), the fourth locking notch (704) is arranged at one side of the first steel plate unit (7) far away from the first locking notch (701), and the fourth locking notch (704) is matched with the first locking notch (701).

8. A combined hydraulic structure according to any one of claims 1-7, characterized in that it comprises a number of caissons (5), wherein the corner position of the steel sheet pile (1) to the caissons (5) is provided with a first pile (6), and wherein the first pile (6) is arranged on the side of the steel sheet pile (1) facing the shore.

9. A combined hydraulic structure according to claim 8, characterized in that the first pile (6) is a stirring pile or a high pressure jet grouting pile.