CN101666098B - Sheet-cell conduit frame prefabricated part pilling structure and dock using same - Google Patents

Abstract

The invention discloses a pile foundation structure of a panel-shaped jacket prefabricated component. A foundation pile is arranged in the vertical conduit, and the foundation pile is driven into the foundation through the vertical conduit to form a pile foundation, and the gap between the foundation pile and the conduit is connected as a whole with concrete pouring. The invention also discloses a wharf adopting the prefabricated component pile foundation structure of the panel-shaped jacket. The invention is suitable for deep water and weak soil foundations, has relatively large bearing capacity and reliable working performance, has the advantages of light weight, good integrity and good durability, simple construction and low engineering cost. In particular, the foundation piles driven into the foundation through the conduit enhance the vertical bearing capacity of the foundation and effectively improve the stability of the structure against sliding and tilting.

Description

The pile foundation structure of the prefabricated member of the plate-shaped jacket and the wharf using the pile foundation structure

technical field

The invention relates to a building structure in port and coastal engineering, in particular to a pile foundation structure of a plate-shaped jacket prefabricated component and a wharf using the pile foundation structure.

Background technique

At present, there are mainly three types of wharf structures used in the project: gravity type wharf, sheet pile wharf and high pile wharf. Gravity wharves include block type and caisson type, etc., which require high foundation bearing capacity and are not suitable for weak soil foundation conditions; sheet pile wharves have a small bearing capacity and are not suitable for large water depths; The ground conditions and water depth are large, but its durability is poor, the structure type is complicated, the construction is difficult, and the adaptability to loading and unloading process changes and overloading is poor. The development of wharf or revetment structures suitable for weak soil foundation and deep water conditions, good durability, simple structure, convenient construction, and low engineering cost is the need of port and coastal engineering construction.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, and to provide a prefabricated member pile of plate-shaped jacket suitable for weak soil foundation and deep water conditions, good durability, simple structure, convenient construction, and low engineering cost foundation structure and the wharf using the pile foundation structure.

The first technical solution provided by the present invention is: a pile foundation structure of a panel-shaped jacket prefabricated component, including a panel-shaped jacket prefabricated component formed by intersecting longitudinal plates and transverse plates, characterized in that the longitudinal The vertical conduit is prefabricated at the intersection line between the slab and the horizontal slab, and foundation piles are arranged in the vertical conduit, and the foundation piles are driven into the foundation through the vertical conduit to form a pile foundation, and the gap between the foundation pile and the conduit is made of concrete Poured into a whole.

At least one of soil, sand, crushed stones and block stones is filled in the grid formed by the crossing of the longitudinal boards and the horizontal boards.

The vertical ducts are made of steel or reinforced concrete.

The foundation pile is made of steel or reinforced concrete.

The foundation pile is a hollow pile.

The foundation pile is a solid pile made of reinforced concrete.

The thickness of the longitudinal plates and the transverse plates is 0.2m~2.0m, and the distance between the longitudinal plates and the transverse plates is 2.0m~10.0m.

The vertical plates are arranged in at least two rows, and the horizontal plates are arranged in at least two rows.

The cross-section of the vertical duct is inner circle and outer square or inner square outer circle, and the shape of the outer surface of the foundation pile is adapted to the shape of the inner surface of the duct.

The second technical solution provided by the present invention: a panel-shaped jacket pile foundation wharf, the wharf includes the panel-shaped jacket prefabricated component pile foundation structure described in any one of the above.

The beneficial effects of the present invention are: it is suitable for deep water and weak soil foundation, has relatively large bearing capacity and reliable working performance, has the advantages of light weight, good integrity and good durability, simple construction and low engineering cost. In particular, the foundation piles driven into the foundation through the conduit enhance the vertical bearing capacity of the foundation and effectively improve the stability of the structure against sliding and tilting. Compared with the gravity wharf, the present invention has the advantage of being suitable for weak soil foundation; compared with the sheet pile wharf, the present invention has the advantages of large bearing capacity and is suitable for deep water; compared with the high pile wharf, the present invention has the advantages of It has the advantages of simple structure, convenient construction, good durability and low engineering cost.

Description of drawings

Fig. 1 is the structure schematic diagram of the pile foundation wharf of panel shape jacket of the present invention;

Fig. 2 is the partially enlarged schematic diagram of the pile foundation structure of the panel-shaped jacket prefabricated member of the present invention;

Fig. 3 is the top view of Fig. 1;

Fig. 4 is the A-A sectional schematic diagram of Fig. 3;

FIG. 5 is a schematic cross-sectional view along B-B of FIG. 3 .

Reference signs: 1, front longitudinal plate, 2, rear longitudinal plate, 3, longitudinal diaphragm, 4, lateral side plate, 5, transverse diaphragm, 6, conduit, 7, foundation pile, 8, breast wall, 9, filler.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the present invention will be further described: as shown in Fig. 1～Fig. 5, the elevation unit is meter among the figure. A pile foundation wharf with a panel-shaped jacket of the present invention adopts a prefabricated component pile foundation structure of a panel-shaped jacket made of reinforced concrete. The prefabricated components include a front longitudinal plate 1, a rear longitudinal plate 2, a longitudinal diaphragm 3, left The right lateral side plate 4, the diaphragm 5, and the conduit 6, and the foundation pile 7 is driven into the foundation through the conduit 6. Each prefabricated component has a length of 10.0m, a width of 12.9m, and a height of 5.0m or 6m. Assume two rows of longitudinal partitions 3 and one row of transverse partitions 5. The clear distance between the longitudinal plates is 3.2m, the clear distance between the transverse plates is 3.0m, and the distance between the transverse side plates and the edge of the prefabricated components is 1.45m. The front longitudinal plate 1, the rear longitudinal plate 2 and the transverse side plate 4 have a thickness of 0.4m, the longitudinal diaphragm 3 and the transverse diaphragm 5 have a thickness of 0.30m, and the duct 6 is a reinforced concrete duct with an inner diameter of 0.60m and a wall thickness of 0.15m . The three-layer grid-shaped jacket prefabricated components are placed along the height direction, and the three-layer grid-shaped jacket prefabricated components are connected into a whole through foundation piles 7 passing through the conduits. The foundation pile 7 can be a steel pipe pile with an outer diameter of 0.50m and a wall thickness of 0.02m. The steel pipe pile 7 is driven into the foundation through the conduit 6, the elevation of the pile bottom is 20m below the mud surface, and the gap between the steel pipe pile 7 and the conduit 6 is filled with concrete pouring.

The slabs of the slab-shaped jacket prefabricated components can be filled with at least one of soil, sand, gravel, and block stones. In-situ reinforced concrete parapet 8 is cast on the upper part of the prefabricated member of the panel-shaped jacket on the top floor, and the section size of parapet 8 is 4.0m x 4.0m. Filling 9 is backfilled in the prefabricated member of the panel-shaped jacket, the upper part and the rear longitudinal plate 2 to form a land area.

Under the foundation conditions shown in Table 1, this embodiment can withstand the use conditions of a design water depth of 15.0m, a portal crane load of 25 tons, and a ground load of 50kPa behind the wharf.

Table 1 Main soil parameters of soil layer

It should be noted that, according to specific construction conditions, the conduit 6 may also be a conduit made of steel. Foundation pile 7 also can adopt reinforced concrete pile. When the section of the steel conduit is circular, the inner diameter of the circular ring may be 0.45m-1.55m, and the wall thickness may be 0.005m-0.05m. The section of the steel conduit can also be inner circle and outer square or inner square outer circle, and the shape of the outer surface of the foundation pile is adapted to the shape of the inner surface of the conduit. When the reinforced concrete conduit is used in the present invention, when the cross section of the reinforced concrete conduit is circular, the inner diameter of the circular ring can be 0.45m~1.55m and the wall thickness can be 0.10m~0.50m according to the specific construction conditions. When the foundation pile 7 is a steel pile, according to specific construction conditions, when the cross section of the steel pile is circular, the outer diameter may be 0.40m~1.50m, and the wall thickness may be 0.005m~0.05m. When the foundation pile is a reinforced concrete pile with a circular cross section, the outer diameter of the reinforced concrete pile may be 0.40m-1.50m, and the wall thickness may be 0.10m-0.50m. When the external dimension is small, the reinforced concrete pile can be a solid pile. According to specific construction conditions, the thickness of the longitudinal plate may be 0.2m~2.0m, and the thickness of the transverse plate may be 0.2m~2.0m. The prefabricated component is provided with at least two rows of longitudinal plates and at least two rows of transverse plates, the distance between the longitudinal plates is 2.0m~10.0m, and the distance between the transverse plates is 2.0m~10.0m. The number of prefabricated components placed along the height direction can be placed in one layer or stacked in at least two layers according to specific construction conditions. Please refer to Fig. 5 , in this embodiment, the prefabricated components are arranged in three layers along the height direction.

The pile foundation structure of the prefabricated member of the panel-shaped jacket is not limited to be used for the wharf, but can also be used for revetment, retaining wall, artificial island enclosure structure, breakwater, diversion embankment and spur dike, etc.

The invention is suitable for deep water and soft soil foundation conditions, has a large bearing capacity and reliable working performance, and has the advantages of light weight, good integrity and good durability of the structure itself, and at the same time has the advantages of simple construction and low engineering cost specialty. In particular, the foundation piles driven into the foundation through the conduit enhance the vertical bearing capacity of the foundation and effectively improve the stability of the structure against sliding and anti-tilting.

Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art Under the enlightenment of the present invention, people can also make many forms without departing from the purpose of the present invention and the scope of protection of the claims, and these all belong to the protection scope of the present invention.

Claims (10)

1. panel shape conduit frame prefabricated part piling strtucture, comprise by stringer board and the mutual interconnection of transverse slat and form panel shape conduit frame prefabricated part, it is characterized in that, the prefabricated vertical duct of described stringer board and transverse slat handing-over line place, be provided with foundation pile in the described vertical duct, described foundation pile passes vertical duct and squeezes into and form pile foundation in the ground, and the slit between described foundation pile and conduit is linked to be integral body with concreting.

2. panel shape conduit frame prefabricated part piling strtucture according to claim 1 is characterized in that, fills at least a in soil, sand, rubble, the piece stone in the panel that described stringer board and transverse slat intersect to form mutually.

3. panel shape conduit frame prefabricated part piling strtucture according to claim 1 is characterized in that described vertical duct is made by steel or steel concrete.

4. panel shape conduit frame prefabricated part piling strtucture according to claim 1 is characterized in that described foundation pile is made by steel or steel concrete.

5. panel shape conduit frame prefabricated part piling strtucture according to claim 1 is characterized in that described foundation pile is a hollow pile.

6. panel shape conduit frame prefabricated part piling strtucture according to claim 1 is characterized in that described foundation pile is that steel concrete waters the solid pile that builds up.

7. panel shape conduit frame prefabricated part piling strtucture according to claim 1 is characterized in that the thickness of described stringer board and transverse slat is 0.2m～2.0m, and the spacing of described stringer board and the spacing of transverse slat are 2.0m～10.0m.

8. panel shape conduit frame prefabricated part piling strtucture according to claim 1 is characterized in that, described stringer board setting at least two rows, described transverse slat setting at least two rows.

9. panel shape conduit frame prefabricated part piling strtucture according to claim 1 is characterized in that, the cross section of described vertical duct is the outer square or square internally and round externally shape of interior circle, and the external surface shape of described foundation pile and the inner surface configuration of described conduit are adaptive.

10. panel shape jacket pile foundation wharfs is characterized in that, this harbour comprises as any described panel shape conduit frame prefabricated part piling strtucture in the claim 1～9.

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