CN210684644U - Offshore construction platform - Google Patents

Abstract

The utility model discloses an offshore construction platform aims at providing an offshore construction platform who is applicable to the nearly circular shape pier of plane shape or offshore facilities, and its technical scheme main points are, set up the steel corbel of customization at the upper end side wall of engineering pile foundation to adopt a new primary and secondary roof beam arrangement structure: the main beams are annularly arranged and the secondary beams are circularly and radially arranged, so that the length of the cantilever end of the secondary beam is reduced, the stress structure between the beams and the piles is optimized, and the mounting steps are simplified while the bearing capacity is met.

Description

Offshore construction platform

Technical Field

The utility model relates to a marine construction field especially relates to a marine construction platform.

Background

With the development and demand of marine transportation, the offshore wharf engineering is enlarged more and more, the sizes of the pile foundation and the abutment are also enlarged more and more, and higher requirements are provided for the design and construction of the offshore construction platform of the pile foundation and the abutment. The construction of the offshore construction platform requires pile erecting, an engineering pile foundation is generally directly adopted as the pile foundation of the offshore construction platform, then a main beam and a secondary beam are sequentially installed on the pile foundation to form a supporting frame, and plates are further laid on the supporting frame to form the construction platform. Because the working condition is complicated during the offshore operation, the tidal range is large, and the offshore operation time is short, the construction platform structure is required to be optimized on the premise of ensuring the bearing capacity, and the construction platform building steps are simplified so as to improve the operation efficiency.

In general, engineering pile foundations of piers or various offshore facilities are arranged in a matrix-like manner, for example, in an offshore platform mentioned in publication number CN205839721U, when the construction platform is designed, main beams are arranged in parallel and built on the pile foundations, secondary beams are arranged perpendicular to the main beams, and finally plates are laid to complete the building.

However, some of the piers or offshore facilities require a plane shape similar to a circle, and at this time, the design of the pile foundation is generally performed in a manner that a central pile is arranged in the middle of the pier or the offshore facility and a plurality of side piles are arranged around the central pile. If the construction platform suitable for the near-circular pier or the offshore facility is designed according to the arrangement mode of the main beams and the secondary beams of the traditional construction platform, the cantilever end of part of the main beams is longer, and the stress requirement can be met only by adding the inclined strut. In addition, the distance between the pile foundations of the main beams arranged in parallel is different, so that the stress is greatly different, the selection of the material type must be considered by the position with the largest stress state, and the waste of material investment is caused. Therefore, for a nearly circular pier or an offshore facility, a construction platform which is convenient to construct and reasonable in stress on the premise of meeting the bearing capacity is urgently needed.

Disclosure of Invention

The utility model aims at solving the problem that when pier or offshore facility's plane shape requirement is approximate circular among the prior art, the atress structure of traditional offshore construction platform girder, secondary beam mode of erection is unreasonable, need increase extra structure or extravagant material, and leads to the increase of the construction degree of difficulty, operation cycle, cost etc..

The technical solution of the utility model is that: the offshore construction platform comprises a main beam, secondary beams, main piles and secondary piles, wherein the secondary piles are arranged around the main piles; the side wall of the upper end part of the secondary pile is provided with a first steel bracket, the two end parts of the main beam are connected with two adjacent steel brackets on the secondary pile, the side wall of the upper end part of the main pile is provided with a second steel bracket, and one end part of the secondary beam is connected with the second steel bracket and the other end part of the secondary beam is connected with the main beam.

Specifically, included angles between adjacent secondary beams are equal, so that the secondary beams are arranged in an even circular radial mode, and load distribution of the secondary beams is guaranteed to be more balanced.

Specifically, first steel bracket up end all is in same horizontal plane, just the shape of first steel bracket has guaranteed that the girder can be in the horizontal erection state according to the inclination design of continuous inferior stake to the uneven atress problem that leads to because pile body slope or off normal among the prior art has been avoided.

Specifically, the up end of second steel bracket with the up end of girder all is in same horizontal plane, just second steel bracket has guaranteed when being convenient for process that the girder can be in the horizontal erection state according to the angle of inclination design of king pile, guarantees the reasonable atress structure of secondary beam.

Specifically, first steel bracket and second steel bracket all include two webs and a flange board, flange board horizontal connection in king pile or secondary pile, two the web connect in the both sides of terminal surface form "pi" font structure under the flange board to the intensity of steel bracket has been guaranteed in the time of being convenient for design and processing.

Preferably, first steel corbel sets up the secondary pile is kept away from that side of king pile to reduce the length of secondary beam cantilever end, make the atress structure between girder and secondary beam more reasonable, increased the effective usable floor area of platform.

Specifically, offshore construction platform still includes the distribution roof beam, the both ends of distribution roof beam connect in the secondary beam, the distribution roof beam is on a parallel with the girder, the distribution roof beam is at a distance from each other and parallel arrangement to make the load further equally divide, the platform is more stable.

Specifically, the offshore construction platform further comprises a patterned steel plate, and the patterned steel plate is laid on the upper end face of the distribution beam.

Particularly, the edge of the offshore construction platform is provided with a railing which is formed by vertically connecting a cross rod and a vertical rod, so that the safety of operating personnel or equipment is protected conveniently.

After the structure more than adopting, compared with the prior art, the utility model has the following advantage: compared with the primary and secondary beam arrangement mode in the prior art, the novel primary and secondary beam erection mode is adopted to ensure a stable stressed structure and avoid the use of an inclined strut structure by adopting the primary beams arranged in an annular mode and the secondary beams arranged in a circular radial mode; through the optimization of the position of the steel bracket, the length of the cantilever end of the beam is reduced, so that the optimization of the mechanism is realized, the integral construction difficulty of the offshore construction platform is reduced, and the cost is reduced. And the erection mode of primary and secondary roof beam is direct through the steel corbel location, from the construction angle operation of being convenient for, overall structure is more retrencied stable, has reduced the operating cycle, especially is fit for the situation that the sea state is complicated, requires that the platform effective area is great.

Drawings

FIG. 1 is a plan view of a main frame of an offshore construction platform;

FIG. 2 is a side view of the body of the offshore construction platform;

FIG. 3 is a plan view of the main body of the offshore construction platform;

FIG. 4 is a cross-sectional view of a steel corbel joint of an offshore construction platform;

FIG. 5 is a front view of a steel corbel joint of an offshore construction platform.

In the drawings: 1. a main pile; 2. secondary piling; 3. a main beam; 4. a secondary beam; 5.1, a first steel bracket; 5.2, a second steel bracket; 5a, a flange plate; 5b, a web; 6. a distribution beam; 7. a railing.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Example 1

As shown in fig. 1, fig. 2 and fig. 3, the offshore construction platform of the present invention comprises a main pile 1 and eight secondary piles 2, wherein the main pile 1 and the secondary piles 2 can be oblique piles or vertical piles. Eight of the secondary piles 2 are arranged in a planar approximately circular manner around the primary pile 1 so that the primary pile 1 is located at the center of the secondary piles 2. The secondary piles 2 are symmetrically distributed relative to the main pile 1, and the distance between the secondary piles 2 is kept uniform, so that a better stress structure is obtained.

The side wall of the upper end part of each secondary pile 2 is provided with two identical first steel brackets 5.1, each first steel bracket 5.1 is in a shape and size established according to the inclination angle of the secondary pile 2 connected with the first steel bracket, and the upper end surfaces of the first steel brackets 5.1 on all the secondary piles 2 are ensured to be in the same plane, so that a better stress structure is obtained. The two first steel corbels 5.1 on any one secondary pile 2 are respectively opposite to one first steel corbel 5.1 on two adjacent secondary piles 2, so that each pair of adjacent secondary piles 2 always has a pair of corresponding first steel corbels 5.1.

The number of secondary beams 4 should be determined according to the load demand, and sixteen secondary beams 4 are provided in the embodiment. The side wall of the upper end part of the main pile 1 is provided with second steel corbels 5.2 which are circumferentially distributed. The distance between the second steel corbels 5.2 should be as equal as possible and the same as the number of the secondary beams 4, so as to ensure that the stress of the main pile 1 is as uniform as possible. The upper end surfaces of all the second steel brackets 5.2 and the upper end surfaces of all the main beams 3 are in the same plane. One end of the secondary beam 4 is connected to the upper end face of any one second steel bracket 5.2, and the other end is connected to the upper end face of the main beam 4 which is closest to the second steel bracket 5.2. The included angles between all adjacent secondary beams 4 are kept the same as much as possible, so that the secondary beams 4 are uniformly and circumferentially and radially arranged on the plane, and the load of the offshore construction platform is uniformly transmitted to the secondary beams 4 and the main beam 3 as much as possible.

All the first steel corbels 5.1 are distributed on the side of the secondary piles 2 remote from the primary pile 1. The both ends of girder 3 are connected in the up end of the corresponding pair of first steel corbel 5.1 of adjacent secondary pile 2 for girder 3 is the biggest with the distance of king pile 1, and the cantilever beam length of secondary beam 4 is minimum this moment, thereby can obtain the biggest platform effective area when guaranteeing bearing capacity.

This offshore construction platform can also further lay distribution beam 6, and the interval that the both ends of distribution beam 6 erect between the up end of adjacent secondary beam 4 and adjacent distribution beam 6 sets up according to the load requirement, and the direction of distribution beam 6 is on a parallel with girder 3 for load is further equallyd divide to the secondary beam 4 on.

The distribution beam 6 can be further paved with plates, and the pattern steel plate with the thickness of 8mm is adopted in the embodiment, so that friction can be increased while the bearing requirement is met, and subsequent construction equipment can be conveniently placed and fixed.

The offshore construction platform can also be provided with a rail 7 at the edge of the platform, in the embodiment, a stainless steel rail with the height of 1.2m is arranged according to construction requirements, the stainless steel rail is formed by vertically connecting a vertical rod and a horizontal rod, the vertical rod is a channel steel [8 ], and the horizontal rod is a stainless steel pipe with the diameter of 52 mm.

As shown in fig. 4 and 5, the first steel corbel 5.1 and the second steel corbel 5.2 are composed of two webs 5b and a flange plate 5a, the flange plate 5a is horizontally connected to the main pile 1 or the secondary pile 2, and the two webs 5b are vertically connected to two sides of the lower end surface of the flange plate 5a to form a pi-shaped structure, so that the strength of the steel corbel is ensured while the design and processing are facilitated.

Example 2

An offshore construction platform, its characteristic is basically the same as in embodiment 1, the difference lies in:

1. first steel corbel 5.1 be located that one side that secondary pile 2 and king pile 1 apart from being close, girder 3 is close with king pile 1's distance this moment for the both ends fulcrum distance of secondary beam 4 reduces, the atress structure is optimized, can provide more stable support under the condition that the platform area satisfies the demand.

2. The I-shaped steel bracket vertically arranged by a single plate or the T-shaped steel bracket vertically connected by two plates is adopted, so that the processing difficulty is further reduced.

3. The number of the secondary beams 4 is increased to 14, so that the arrangement of the secondary beams 3 is more dense compared with that of the secondary beams 1, and a steel plate net is directly paved above the secondary beams 4, so that the erection of the distribution beams 6 is avoided, the bearing capacity is ensured, and the platform structure is simplified.

The above description is a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that any improvements and modifications to the present invention without departing from the principles of the present invention should also be considered within the scope of the present invention by those skilled in the art.

Claims (9)

1. The utility model provides an offshore construction platform, includes girder, secondary beam, king pile and secondary pile, secondary pile encircle the king pile arranges its characterized in that: the upper end lateral wall of inferior stake is equipped with first steel corbel, the first steel corbel on two adjacent inferior stakes is connected at the both ends of girder, the upper end lateral wall of king-pile is equipped with second steel corbel, one end connection in second steel corbel and another end connection in the girder.

2. The offshore construction platform of claim 1, wherein: and included angles between the adjacent secondary beams are equal, so that the secondary beams are uniformly and circularly and radially arranged.

3. The offshore construction platform of claim 1, wherein: the upper end faces of the first steel brackets are all in the same horizontal plane.

4. The offshore construction platform of claim 1, wherein: the upper end face of the second steel bracket and the upper end face of the main beam are both in the same horizontal plane.

5. An offshore construction platform according to claim 1, 2 or 3, characterized in that: first steel bracket and second steel bracket all include two webs and a flange board, flange board horizontal connection in king pile or secondary pile, two the web vertical connect in the both sides of terminal surface form "pi" font structure under the flange board.

6. The offshore construction platform of any of claims 1 to 4, wherein: the first steel bracket is arranged on the side, away from the main pile, of the secondary pile.

7. The offshore construction platform of any of claims 1 to 4, wherein: the two ends of the distribution beams are connected to the secondary beams, the distribution beams are parallel to the main beams, and the distribution beams are spaced and arranged in parallel.

8. The offshore construction platform of claim 7, wherein: the steel plate with the patterns is paved on the upper end face of the distribution beam.

9. The offshore construction platform of claim 8, wherein: the edge of the offshore construction platform is provided with a railing which is formed by vertically connecting a cross rod and a vertical rod.

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