CN101949146A - Offshore auxiliary construction platform device and using method thereof - Google Patents

Abstract

The invention discloses a platform device for auxiliary construction at sea and a method for using the same. The crane system is arranged on a movable support system, and the support system includes two track beams parallel to each other. The horizontal connecting beam whose length direction is perpendicular to the beam, the track beam and the horizontal connecting beam adopt box girder structure, and the two box girders are vertically connected by scissor braces. The traveling mechanism drives it to move. The traveling mechanism is equipped with a PTFE slide plate above the box girder support. A stainless steel plate is laid on the bottom of the lower flange of the box girder to facilitate the overall movement of the platform device. The stainless steel plate moves on the PTFE slide plate and passes through the The traction mechanism at the end of the track beam performs traction. This kind of platform device can move from one working surface to the next working surface by itself, avoiding frequent installation, dismantling and reverse transportation of equipment, which not only reduces the safety risk of offshore construction, but also improves the efficiency of offshore pier construction.

Description

Offshore auxiliary construction platform device and using method thereof

technical field

The invention relates to a construction machinery equipment, in particular to a platform device suitable for auxiliary bridge cast-in-place pier construction under harsh sea conditions and a method for using the same.

Background technique

At present, the construction of cast-in-situ piers of the cross-sea bridge uses two kinds of equipment to assist construction, one is the auxiliary construction of the crane ship, and the other is the auxiliary construction of the steel platform.

A crane ship, also known as a multi-purpose operation ship, refers to a large flat barge with lifting equipment on the deck. The crane ship is anchored between the two piers. The cabin is used as the front office and living place for construction workers, and the deck is used as a storage place for temporary materials such as steel bars and formwork. The ship's crane is used as a vertical transportation tool for materials and machinery; the ship is equipped with water tanks and generators to ensure water and electricity for the construction site. After the construction of the adjacent pier column, the crane ship can move the anchor and drag it to the other two pier columns for construction. The plane position of a typical crane ship is shown in Figure 1 of the specification.

The steel platform used for construction is a temporary structure made of steel pipe piles as the foundation and welded with section steel and steel plates on the piers that need to be constructed. Tower cranes (or other lifting equipment), generators, etc. are installed on the platform. Water tanks and other temporary living and office facilities. During the construction of pier columns, the platform crane is used as a vertical transportation tool. Temporary materials such as formwork and steel bars can be stacked on the platform, and temporary office and living space are also provided for construction workers. In order to facilitate the transportation of equipment and materials and the passage of construction personnel, the platform is connected to the land by trestle bridges as much as possible, and the offshore construction is transformed into land construction. The auxiliary construction of the steel platform is shown in Figure 2 of the specification.

However, during the construction of cast-in-place pier columns at sea, the crane ship is affected by sea tides, wind waves and typhoons, especially in the open sea, which makes it difficult for the ship to stand stably, and the crane above it is difficult to operate normally, and the construction efficiency is low , the safety risk is relatively large; the steel platform changes offshore construction into land construction, but because the steel platform cannot be moved flexibly, each pier needs to be erected and dismantled, the platform uses a large amount of steel, the construction period is long, and the construction efficiency is low ,higher cost. Therefore, the above two auxiliary construction methods all have certain limitations, and the comprehensive performance is not good.

Contents of the invention

The technical problem to be solved by the present invention is to provide an offshore auxiliary construction platform device and its use method in view of the problems existing in the prior art. The effective working time of the equipment, at the same time, the whole set of equipment can be moved from one working surface to the next working surface by itself, avoiding frequent installation, dismantling and reverse transportation of equipment, and improving work efficiency.

The technical solution of the present invention is that the offshore auxiliary construction platform device includes a crane system, the crane system is arranged on a movable support system, and the support system drives it to move through a walking mechanism, and the support system also has a Anti-Taiwan and anti-collision systems are installed.

The support system includes two track beams parallel to each other, and a transverse connection beam perpendicular to the length direction of the track beam is arranged between the two track beams. Both the track beam and the transverse connection beam adopt a box girder structure. The spaces are vertically connected with scissor braces, and the box girder support is placed on the platform below the track beam.

The walking mechanism is provided with a PTFE slide plate above the box girder support, and a stainless steel plate is laid on the bottom of the lower flange of the box girder to facilitate the overall movement of the platform device. The traction mechanism at the bottom is used for traction.

The anti-platform and anti-collision system is to use the support to raise the elevation of the track beam, to set holes on the track beam to reduce the wind load, and to fix the anchor of the track beam on the cap platform that has been constructed.

The traction mechanism is an electric hoist.

A method of using the construction platform device for construction, specifically:

1) Rely on the track beam on the cap platform that has been constructed, fix the two track beams and the horizontal connecting beam to form a stable construction platform, and install the crane system and walking mechanism on the track beam of the mobile platform;

2) After all the components of the mobile construction platform are installed, and the crane system and the electric hoist traveling mechanism are debugged and accepted, the construction of the cast-in-place pier can begin;

3) After all the construction of the rear pier body is completed, put the boom of the crane system forward on the shelving beam on the track beam, move the crane system to the front side of the previous pier body, and put the crane system in place And the shelving beam at the front end of the tower arm is fixed together with the steel box girder structure of the construction platform;

4) Use the electric hoist as the traction system to move the steel box girder structure of the construction platform. When the rear end is about to break away from the rear support, stop the movement of the steel box girder, slowly lift the box girder with a screw jack, and remove the support;

5) The jack slowly descends until the steel box girder structure of the construction platform moves out of the range of the support, pull out the jack, and the box girder continues to move forward;

6) When the steel box girder structure of the construction platform moves to a certain distance from the cantilever at the front end, reverse the boom of the crane system and fix it on the rear side, and continue to move the steel box girder structure of the construction platform. When the front end reaches the previous platform, use Adjust the position of the jack so that it rests on the previous support until it moves to the designed position;

7) After the steel box girder structure of the construction platform is moved into place, the crane is moved to the design position during operation, and the construction of the next pier is carried out, that is, the entire movable process is completed.

When the crane system is in operation, the wind force is less than or equal to level 8, and the wind speed is less than or equal to 21m/s.

The offshore auxiliary construction platform device with the above-mentioned special structure and its use method have the following advantages:

1. This kind of offshore auxiliary construction platform device has the advantages of traditional equipment and steel platforms, overcomes the harsh sea conditions in the open sea, changes offshore construction into land construction, and has the flexibility of lifting ships. The pier column on the working face can be slid to the next working face for construction by using its own traction system. The equipment is combined with the actual situation on site. The track beam in the system is used as both platform support and crane track; the track beams are connected by horizontal connecting beams to form a Overall, it is conducive to walking and stability against typhoons, and the overall concept is novel, ingenious and practical.

2. This kind of offshore auxiliary construction platform device uses an offshore mobile construction platform to assist pier construction, which not only reduces the safety risk of offshore construction, but also improves the efficiency of offshore pier construction.

3. The whole set of equipment for this kind of offshore auxiliary construction platform device can be moved from one working surface to the next working surface by itself, avoiding frequent installation and disassembly of equipment and unlucky transportation.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing:

Fig. 1 is a schematic diagram of the assembly structure of the present invention.

FIG. 2 is a schematic top view of the structure shown in FIG. 1 .

Fig. 3 is a structural schematic diagram of position 1 where the present invention moves during the working process.

Fig. 4 is a structural schematic diagram of the second position of the present invention moving during the working process.

Fig. 5 is a structural schematic diagram of the third position of the present invention moving during the working process.

Fig. 6 is a schematic structural view of the fourth position of the present invention moving during the working process.

Fig. 7 is a schematic diagram of the structure between the crane system and the track beam in the present invention.

Fig. 8 is a schematic diagram of the mechanism of the traction system in the present invention.

In Fig. 1-8, 1: crane system; 2: track beam; 3: transverse link beam; 4: box girder support.

Detailed ways

From the combination of the structures shown in Figures 1 to 8, it can be seen that the offshore auxiliary construction platform device includes a crane system 1, which is arranged on a movable support system, and the support system includes two parallel track beams 2, A horizontal connection beam 3 perpendicular to the length direction of the track beam 2 is provided between the two track beams 2. Both the track beam 2 and the horizontal connection beam 3 adopt a box girder structure, and the two box girders are vertically connected by scissor braces. The box girder support 4 is placed on the platform below the beam 2, and the support system drives it to move through the traveling mechanism. The stainless steel plate moves as a whole, the stainless steel plate moves on the PTFE slide plate, and is pulled by the traction mechanism electric hoist located at the end of the track beam 2.

An anti-table and anti-collision system is also installed on the support system. The anti-table and anti-collision system is to use the support to raise the elevation of the track beam 2, and to set holes on the track beam 2 to reduce the wind load, and to adjust the height of the track beam 2. The anchor is fixed on the easy-to-construct cap.

As a specific implementation, the mobile construction platform adopts two track beams 2 with a length of 103.4m. The distance between the centers of the track beams 2 is 6m, and the two track beams 2 are connected by 11 transverse connecting beams 3 . The track beam 2 adopts a box girder with a height of 2.436m and a width of 1.0m. The transverse connection beam is two box girders with a section of 300×300mm, and the two box girders are vertically connected by scissor braces. At the same time, a box girder support 4 is placed on the platform below the track beam 2, a PTFE slide plate is placed above the box girder support 4, and a stainless steel plate is laid on the bottom of the lower flange of the box girder support 4 to facilitate the overall movement of the platform system.

In addition to welding between the guide beam and the track beam 2, the track beam 2 and the track beam connecting seat are connected by bolts, and the track beam 2 and the transverse connecting beam 3 are connected by bolts.

The main girder of the mobile platform system relies on the cap platform that has been constructed, and connects and fixes the two track beams in two directions to form a stable construction platform. The platform can be stacked with formwork, steel bars and other materials and tools, and it can also be used as a temporary construction living area. The crane is installed on the main girder of the mobile platform, and the crane on the platform is used as the vertical transportation equipment for pier body construction.

The method of using this kind of construction platform device for construction is specifically:

1) Rely on the track beam 2 on the cap platform that has been constructed, fix the two track beams 2 and the transverse connecting beam 3 to form a stable construction platform, and install the crane system 1 on the track beam 2 of the mobile platform, walking mechanism;

2) After all the components of the mobile construction platform are installed, and the crane system and the electric hoist traveling mechanism are debugged and accepted, the construction of the cast-in-place pier can begin;

3) After all the construction of the rear pier body is completed, put the boom of the crane system forward on the shelving beam on the track beam 2, move the crane system to the front side of the previous pier body, and put the crane system in place. The system and the shelving beam at the front end of the tower arm are fixed together with the steel box girder structure of the construction platform;

4) Use the electric hoist as the traction system to move the steel box girder structure of the construction platform. When the rear end is about to break away from the rear support, stop the movement of the steel box girder, slowly lift the box girder with a screw jack, and remove the support;

5) The jack slowly descends until the steel box girder structure of the construction platform moves out of the range of the support, pull out the jack, and the box girder continues to move forward;

6) When the steel box girder structure of the construction platform moves to a certain distance from the cantilever at the front end, reverse the boom of the crane system and fix it on the rear side, and continue to move the steel box girder structure of the construction platform. When the front end reaches the previous platform, use Adjust the position of the jack so that it rests on the previous support until it moves to the designed position;

7) After the steel box girder structure of the construction platform is moved into place, the crane is moved to the design position during operation, and the construction of the next pier is carried out, that is, the entire movable process is completed.

The working process of this kind of equipment is as follows: After all the components of the mobile construction platform are installed, and the boom crane and electric hoist walking system are debugged and accepted, the cast-in-place pier construction can begin.

1) Crane hoisting operation, complete the construction of the back-end pier body

After everything is installed in place, fix the crane in the designated position and prepare for hoisting work. Use ships to transport the formwork, steel bars, etc. to the other side of the cap to prepare for the construction of the pier (close to the cap), and use a crane to hoist to carry out the construction of the pier. When the crane is working, the wind force shall not exceed level 8, and the wind speed shall not exceed 21m/s.

2) The crane moves to the design position

After all the construction of the rear pier body is completed, put the boom of the crane forward on the shelving beam on the box girder track, move the crane to the front side of the previous pier body, and place the crane and the front end of the tower arm The shelving beam is fixed together with the steel box girder structure of the construction platform.

3) Move the box girder to the design position

The electric hoist is used as the traction system to move the steel box girder structure of the construction platform. When the rear end is about to break away from the rear support, stop the movement of the steel box girder, slowly lift the box girder with a screw jack, and remove the support. Then, the jack slowly descends until the box girder moves out of the range of the support, then the jack is pulled out, and the box girder continues to move forward.

When the steel box girder structure of the construction platform moves to the front end of the cantilever exceeding 30m, reverse the boom of the crane and fix it on the rear side, and continue to move the steel box girder structure of the construction platform. When the front end reaches the previous cap, use the jack to adjust the position , so that it rests on the previous support until it moves to the design position.

4) The mobile crane is in place for the next pier construction

After the steel box girder structure of the construction platform is moved into place, the crane is moved to the design position during operation, and the construction of the next pier is carried out.

The key technologies, processes and schemes adopted by this equipment are as follows:

1) The overall concept is novel, ingenious and practical.

This set of equipment not only integrates the advantages of traditional equipment, but also overcomes the shortcomings of traditional equipment; the equipment is combined with the actual situation on site, the main beam in the system is not only used as a platform support, but also as a crane track; the main beams are connected to form a whole , is conducive to walking and anti-table stability. The overall concept is novel, ingenious and practical.

2) The construction room adopts a unique connection method, which is convenient for installation and disassembly

The track beams 2 are connected by connecting seats, and the track beams 2 and the transverse connecting beams 3 are connected by bolts, which is convenient for manufacture and on-site installation and disassembly especially at sea.

3) Adopt simple and reliable walking system

The walking system adopts stainless steel plate to move on the PTFE slide plate, and the electric hoist is used as traction. Compared with other walking systems, this walking system is simple, reliable, low in cost and easy to operate.

4) Simple and reliable anti-typhoon system

The anti-typhoon system adopts the following simple measures: a. Use the support to raise the elevation of the main girder to reduce the impact of storm surge; b. On the other hand, open holes on the main girder to reduce the wind load and save steel consumption; c. Make full use of the existing embedded parts on site, and anchor the main beam on the cap platform that is easy to construct.

5) Curved bridge via technology

This system can not only construct straight bridges, but also construct curved bridges, and realize the self-passing of curved bridges, expanding the applicable conditions of this set of equipment.

The use of this kind of offshore mobile construction platform to assist the construction of pier columns has the advantages of steel platforms, overcomes the harsh sea conditions in the open sea, and transforms offshore construction into land construction; it also has the flexibility of crane ships, and can be completed after the construction of a working face pier The column can be slid to the next working surface for construction by using its own traction system. Using the offshore mobile construction platform to assist the construction of pier columns not only reduces the safety risk of offshore construction, but also improves the efficiency of offshore pier column construction.

Claims (7)

1. marine auxiliary construction stage apparatus, comprise loop wheel machine system (1), it is characterized in that: described loop wheel machine system (1) is arranged on movably on the support system, and support system drives it by walking mechanism and moves, and also is equipped with on the described support system and combats typhoon and fender system.

2. a kind of marine auxiliary construction stage apparatus according to claim 1, it is characterized in that: described support system comprises two rail beams that are parallel to each other (2), article two, be provided with between the rail beam (2) and the perpendicular transverse strut (3) of rail beam (2) length direction, rail beam (2) and transverse strut (3) all adopt box-beam structure, vertically link to each other placing box beam support (4) on the cushion cap of rail beam (2) below between two casees beams with bridging.

3. a kind of marine auxiliary construction stage apparatus according to claim 2, it is characterized in that: described walking mechanism is to be provided with the tetrafluoro slide plate in the top of case beam support (4), lay at the bottom of the case lower flange of girder edge and make things convenient for the whole stainless-steel sheet that moves of stage apparatus, stainless-steel sheet moves on the tetrafluoro slide plate, and draws by the haulage gear that is positioned at rail beam (2) end.

4. according to the described a kind of marine auxiliary construction stage apparatus of each claim of claim 1-3, it is characterized in that: described combat typhoon and fender system for to utilize bearing to raise the absolute altitude of rail beam (2), go up the hole that setting reduces wind load at rail beam (2), and being anchored on the cushion cap of having constructed rail beam (2).

5. a kind of marine auxiliary construction stage apparatus according to claim 4, it is characterized in that: described haulage gear is an electric block.

6. using method of utilizing the described operation platform device of each claim of claim 1-5 to construct, it is characterized in that: described using method is specially:

1) rail beam (2) is relied on the cushion cap of having constructed, two rail beams (2) and transverse strut (3) are fixed, form a stable operation platform, go up at the rail beam (2) of mobile platform loop wheel machine system (1), walking mechanism are installed;

2) treat the whole installations of all members of mobile operation platform, loop wheel machine system and electric block walking mechanism are debugged examination after, can begin cast-in-place pier construction;

3) treat the rear end pier shaft all construction finished after, with the arm of loop wheel machine system the shelving on the beam on rail beam (2) of lying prone forward, the jenny system is to previous pier shaft front side, the beam of shelving of loop wheel machine system and tower arm front end is fixed together with operation platform steel box-beam structure after in place;

4) adopt electric block as trailer system, mobile operation platform steel box-beam structure when the rear end will break away from rear support, stops steel case beam and moves, and slowly the case back is risen with jackscrew, and bearing is removed;

5) jack slowly descends, and after operation platform steel box-beam structure moves to disengaging bearing scope, extracts jack out, and the case beam continues reach;

When 6) operation platform steel box-beam structure moves to front end cantilever certain distance, the counter-rotating of the arm of loop wheel machine system is fixed on rear side to be fixed, continue mobile operation platform steel box-beam structure, when front end arrives last cushion cap, utilize the jack positioning, it is shelved to last bearing, until moving to design attitude;

7) operation platform steel box-beam structure move in place after, the design attitude of jenny during to operation carries out the construction of next pier shaft, promptly finishes whole movably process.

7. according to the described a kind of using method of utilizing the operation platform device to construct of claim 6, it is characterized in that: described loop wheel machine system is when operation, and wind-force is less than or equal to strong gale, and wind speed is less than or equal to 21m/s.

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