KR20140092217A - Construction method of the pier with the working bardge - Google Patents

Abstract

The present invention relates to an underwater installation method for a bridge pier using a working vessel which can exclude a cofferdam installation process. In order to exclude a process for installing a wide range of a cofferdam or a process for constructing a temporary bridge when an underwater structure is installed in water, a bridge pier, fabricated with a center pile, an upper plate, or a structure in a ground support station or a barge, is inserted and stood into a center pile placed in an underwater bedrock to be exposed through the surface of water using a carrier vessel and a badge equipped with a variety of equipment. Water leakage and floating of the bridge pier are prevented using a waterproof curtain. The bridge pier is sunk to the bedrock by removing soft ground from a base space, or the bridge pier is fixed on the bedrock by connecting the bridge pier with a plurality of piles and filing remaining spaces in the base space, an entrance space, and a center pile space with reinforced concrete. When an underwater structure is installed in a water path formed by the bridge pier, an arc-shaped water gate and the waterproof curtain installed on both sides of the water path can replace the cofferdam installation process. Remaining processes are completed on the upper plate or the structure assembled to the bridge pier, such that the cofferdam installation and disassembly processes are excluded. The overall process is performed by division of labor and cooperation, such that construction periods can be shortened and construction costs can be reduced. Tide or the flow of a river can be maintained in a construction period, and discontinuance of construction and environmental change can be minimized.

Description

Construction method of piers with the working barde using a work line.

The present invention relates to an underwater installation method of a pier using a work line for omitting a temporary water film installation process. More particularly, the present invention relates to a method of installing a pier in an underwater rocky ground with a base space, After removing the soft ground in the drained basement, it is placed on the rock so that the top is exposed to the water. After connecting to the pile, the foundation space and the entrance space are filled with reinforced concrete, The process of finishing the remaining construction in the structure is related to the underwater installation method of the bridge pier using the work line propelled by the barge with various construction equipments.

In order to construct bridges, tidal power plants or water buildings in river or tidal tidal and high-wave waters with fast flow rates, we have secured a work area much larger than the pier foundation area as a provisional tundish.

However, depending on the depth of the construction area and the amount of water passing through, the depth of the soft ground, and the height of the structure, it is necessary to secure the area for loading the terrazzo, the residual soil, the equipment working space, the access road, And, the farther away from the land, the exponential increase in the cost and time for the temporary dam construction and the risk of flooding due to the collapse can not be ruled out.

In particular, straits or streams where the tidal currents flow into the tidal flats should be constructed several times depending on the number of passes and the progress of the construction, and countermeasures should be taken against the increase in the number of tidal flats or floods.

The Sihwa tidal power plant, which built 400 m of tidal power plant, was constructed with a water tide of 2km or so along with the sea tide that was already completed on the road. However, due to the collapse of the embankment, It was stopped. In addition to this, it proves that the reclaimed soil was enough to make artificial islands of several thousand pyeong.

When a wind turbine is installed on the sea or an analogue pier is pierced, a method of piling a pile or applying a vacuum to a pile of a pile is used in a thick underwater floor, but in a thin layer of soft pile, a hard rock is drilled Structures such as tidal power plants can not replace the foundation with only such files.

Therefore, there is a need for a method of connecting the upper end to the upper plate or installing a water structure so that the upper end of the bridge can be exposed to the water surface at the designed position without the provision of a temporary waterwall. This is because the remaining construction can be finished in the above-mentioned roof or the water structure.

It is to fix the pile on the rock to the support so that the pier made on the ground is exposed to the water and fix the bottom to the rock.

In order to accurately fix the bridge to the rock, two or three piles should be correctly pushed in place on one pier and there should be little clearance between the bridge and the pier. The pier must be light enough to fit in the pile, And a drainage tunnel should not be formed beneath the pier when draining to work, or buoyancy should not be generated.

When an underwater structure is installed on a waterway formed by a pier like a tidal power plant, an arc-shaped water gate is installed on both sides. It is easy to reinforce the skeleton so that it can withstand the water pressure greater than the flat water gate, and underwater structures such as aberration bases and underwater beams can extend out of the waterway.

In order for such a process to be carried out in water, the ground support base for constructing and supplying structures such as piers, barges with various construction equipments, and material carriers are carried out by division and cooperation, and when the worker is working in the basic space Ventilation is required to discharge toxic gases from the machine or spewed from underground.

This method omits the construction of temporary trenches as well as the temporary bridge construction, the trenching area is limited to the foundation section of the pier, so the amount of residual soil is small, and the backfilling or dismantling process is omitted or reduced, The normal flow of water is maintained and environmental changes are minimized and the process is not interrupted unless a disaster such as a typhoon or an earthquake occurs.

The object of the present invention is to develop an underwater installation method of a pier using a work line so that the pier is fixed to the submarine rock bed and the upper part is exposed to the water surface without finishing a provisional waterwall or temporary bridge construction work.

In order to accomplish the above object, the underwater installation method of a pier using a work line is a ground support base having a loading dock or a foundation formed of a base space wall having a wedge-type bit at the lower end, A center pillar formed integrally with the base space wall and having a plurality of central pile spaces vertically penetrating therethrough and an entrance space; a center pile insertable into the central pile space; Substructure fabrication process;

Wherein the bridge pier is sandwiched between a plurality of the center piles fixed to the rock, a gap formed between the wedge-shaped bit and the sea bed is filled with the gravel charged into the foundation space, and waterproofed from the upper part of the bridge, exposed to the water surface, Piers installed and waterproofed to prevent flooding and flooding after draining with curtains;

A pier fixing step of removing the soft ground and loose rock so that the wedge-shaped bit reaches the rock, or a plurality of piles are laid on the floor, and the remaining space of the base space, the access space and the center pile space is filled with reinforced concrete;

An underwater structure installation step in which an arc-shaped water gate is installed on both sides of the water channel formed by the pier with the waterproof curtains disassembled and the water curtain is adhered to the outside of the arc-shaped water gate and the seabed and drained;

And a remaining process to be completed in the pier or the augmented structure assembled in the underwater structure;

All processes are carried out by drill machines, pile installation equipment, crane and dredging equipment, concrete pouring equipment, generators and ventilators, multiple barge lines and material carriers with lifting, maneuvering and anchoring functions. .

The bridge pier may be divided into a plurality of steps according to the depth of water and the exposure height or weight of the installation area and connected to the center file inserted in the center file space.

Wherein the waterproof curtain has a floor material whose inner periphery coincides with the cross section of the pier and whose outer periphery is cut into an ellipse or a circular shape, An inner skin extending to the railing provided on the bridge pier, and an outer cover having a buoy and a steel block attached together at the upper end of which the lower end is sealed with the outer periphery of the floor and is reinforced with a sling or a wire. And the soil is inserted into the ∪ -type bag formed around the pier so that the bottom portion can be closely attached to the seabed so that the cutting portion is seamably detachable in a plurality of pieces according to the external shape of the pier.

The dismantling of the waterproof curtain is characterized in that the buoy is removed and the soil is removed from the ∪-type pouch whose envelope sinks to the weight of the steel bar, and the piece of cut-off is loosened and separated one by one.

In the present invention, since the temporary water filming process is omitted and all the processes from the manufacture and installation of the bridge pillar structure to the remaining construction are promoted through the division of labor or collaboration, the construction period is shortened as long as the weather condition is allowed and the risk of collapse, There is almost no process, and it can be recycled to arc-shaped water curtains and waterproof curtains as well as work lines and carrier ships, which greatly reduces the construction cost and maintains normal tidal flow and river flow during the construction period.

Figure 1 is an elevation view of a bridge pier fixed to a rock with a central file and a file.
Figure 2 is a side view of a bridge pier fixed to a rock with a central file and file.
Figure 3 is an internal and external cross-sectional view of the piercing body;
FIG. 4 is a top view of the main body of a double-bladed aeration power plant pier integrated with a waterfall housing.
Fig. 5 is a floor plan view of the basic space of a pumped aeration power plant pier which is integrated with a waterfall house.
Figure 6 is a plan view of the circular pillar body.
Figure 7 is a floor plan view of a circular pier.
Figure 8 is an elevation view of the waterproof curtain installed on the pier.
FIG. 9 is a cross-sectional view of an arc-shaped water gate installed on both sides of a waterway formed by a pier.

Hereinafter, an underwater installation method of a pier using a work line according to a preferred embodiment of the present invention will be described with reference to the drawings.

1 is a top view of a bridge bridge 59 fixed to a rock 156 by a center file 148 and a file 147. Fig. 2 is a side view (cross-sectional view) of the bridge bridge 59, Is a cross-sectional view of the inner formwork 152a and the outer formwork 152b that form the bridge pier 95 and the bridge support 95 and the bridge 95 in a barge with an anchorage function and an anchorage function, A center file 148 installed on the seabed, and a top plate assembled to the bridge 89 are manufactured.

The bridge pier 95 includes a base space 151 formed by a base space wall 151a having a wedge shaped bit 154 at a lower end thereof and a plurality of central file spaces 148a penetrating to the upper end from the base space 151, The main body which is lighter in weight in the access space 149 may be integrally formed, but may be divided into multiple stages according to the depth of water, the exposure height, or the weight. In this case, The part is joined with concrete or adhesive.

5 is a plan view of the base space 151 of the bridge pier 95 and Fig. 6 is a plan view of the body of the circular bridge bridge 95. Fig. 4 is a plan view of the tributary power bridge pier 95, 7 is a plan view of the base space 151 of the circular bridge pier 95. In order to prevent the installation position from being changed or tilted until the bridge piers 95, 156 mounted in advance on a plurality of central files 148 fixed in advance.

A water immersion tunnel is formed beneath the bit 154 when draining to remove the soft ground in the foundation space 151 or water leakage is prevented from occurring between the bridge portions so that the bridge pier 95 can not float The ⊙ -type bag of the waterproof curtain 158 installed on the sea floor around the base space wall 151a is pressed to the seabed by the gravel 159.

The waterproof curtain 158 is cut in a shape in which the inside of the floor material 158c is aligned with the cross section of the bridge pier 95 and the outer periphery thereof is cut into a circular or elliptical shape in accordance with the external shape of the bridge pier 95, The sutured end wall 158a extends to the top 124 in tight contact with the pier 95 and is secured to the railing 162 on a handrail 155 that is secured across the top 124 or stood at the top, The bottom 161a and the buoy 160 are attached to the upper end reinforced by the wire or the sling 163 so that the ∪ -type bag is formed by the outer covering 158b with the lower end sealed with the outer periphery of the bottom 158c, And is divided into a plurality of pieces according to the outer shape of the pier 95 so as to be easily installed and disassembled, and the cut portion is sealed with zipper or tape.

If the bottom of the pier 95 is a rocky rock or a deep slope and a space is formed between the seabed and the bit 154, it is preferable that before the slurry 159 is introduced into the ∪- Thereby blocking the space and preventing the waterproof curtain 158 from being pushed in.

When the soft ground 157 and the loose rock are removed in the drained base space 151, the bit 154 can be lowered to the rock 156 with a pile 95 load or a light strike. When the soft ground 157 is deep, the soft ground 157 is removed and the pylon 95 is lowered to pile up the pile 147 to connect it with the rock mass 156, and the foundation space 151 and the access space 149 are formed. And the center file space 148a are filled with the reinforced concrete.

The waterproof curtain 158 is dismantled by removing the buoy 160 to subside the envelope 158b with the weight of the steel bar 161 and removing the soil 159 with a flow velocity or a water cannister, Separate.

When the aquatic power plant, the aqueduct or other underwater structure 96 is installed in the waterway formed by the bridge pier 95, the waterproof curtain 158 is reinforced so that it is not deformed into water pressure on both sides of the waterway formed by the pierced bridge 95 A pair of arc-shaped gates 76 are installed on the supporting grooves or the piers 95, and the water is drained after the water curtains are cut off.

When the upper plate 124 or the structure is assembled to the pier 95 or an underwater structure, the remaining works such as road railing, water structure, water turbine generator, and water tower are completed.

All of the above processes are performed by the material carrier, the underwater drill machine and pile installation equipment where the installation position is adjusted by GPS, the large crane, the wire excavator, the dredging pump, the concrete pump, It is equipped with an anchorage function that can be installed horizontally without being hit by waves or algae at all, and a work line with lifting and maneuvering ability that can be moored at shallow water depths. And the finishing process such as dismantling temporary tear film, backfilling, and residual treatment is omitted or drastically reduced, thereby remarkably shortening the air and reducing the investment cost.

The underwater installation method of a pier is not limited to bridges, but also to tidal power plants, wave power plants, or when constructing offshore structures on the coast or continental shelf, and when constructing a vertical pier, Any structure that needs to be fixed can be installed without the need for extensive temporary cofferdams.

The piers can also be installed in the same way on the ground if the access roads are accessible for transport vehicles and mobile working vehicles instead of work lines.

24; Aqueduct 76; Arc-shaped water gate 95; pier
96; An underwater structure 103; Aberration basis 123; Water gate home
123a; Aberration groove 124; An upper plate 124a; road
147; File 148; A center file 148a; Central file space
149; Access space 150; Assembly line 151; Foundation space
151a; A base space wall 152; Die 152a; Inner mold
152b; Outer mold 154; Bit 155; Handrail
156; Rock ground (bedrock) 157; Soft ground 158; Waterproof curtain
158a; (Waterproof curtain) inner skin 158b; (Waterproof curtain) shell 158c; (Waterproof curtain) Flooring
159; Tosa 160; Balloon or buoyancy block 161; Iron
162; Rope 163; Rope or wire

Claims (4)

A ground supporting base having a loading dock or a barge having a buoyancy function and an anchoring function, wherein the base space is formed of a basic space wall having a wedge-shaped bit at the lower end thereof and a plurality of vertically penetrating bodies formed integrally with the base space wall A center pile inserted into the central file space, and a subsidiary structure assembled to the pier;
Wherein the bridge pier is sandwiched between a plurality of the center piles fixed to the rock, a gap formed between the wedge-shaped bit and the sea bed is filled with the gravel charged into the foundation space, and waterproofed from the upper part of the bridge, exposed to the water surface, Piers installed and waterproofed to prevent flooding and flooding after draining with curtains;
A pier fixing step of removing the soft ground and loose rock so that the wedge-shaped bit reaches the rock, or a plurality of piles are laid on the floor, and the remaining space of the base space, the access space and the center pile space is filled with reinforced concrete;
An underwater structure installation step in which an arc-shaped water gate is installed on both sides of the water channel formed by the pier with the waterproof curtains disassembled and the water curtain is adhered to the outside of the arc-shaped water gate and the seabed and drained;
And a remaining process to be completed in the pier or the augmented structure assembled in the underwater structure;
All processes are carried out by drill machines, pile installation equipment, crane and dredging equipment, concrete pouring equipment, generators and ventilators, multiple barge lines and material carriers with lifting, maneuvering and anchoring functions. Wherein the method comprises the steps of:
The method according to claim 1,
Wherein the bridge pier is divided into a plurality of stages and connected to a central file inserted in the center file space according to the depth of water and the exposure height or weight of the installation area.
The method according to claim 1,
Wherein the waterproof curtain has a floor material whose inner periphery coincides with the cross section of the pier and whose outer periphery is cut into an ellipse or a circular shape, An inner skin extending to the railing provided on the bridge pier, and an outer cover having a buoy and a steel block attached together at the upper end of which the lower end is sealed with the outer periphery of the floor and is reinforced with a sling or a wire. Shaped pouch formed around the pier so that the bottom part can be closely attached to the seabed, and the gravel-like material is inserted into the pouch-shaped pouch formed around the pier. Underwater installation method.
The dismantling of the waterproof curtain is carried out by removing the buoys, removing the soil from the ∪-type pouch whose outer surface is settled by the weight of the steel ingot, and releasing the cut part of the suture.

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