KR20030006236A - Method of subsiding well open caisson for constructing piers under the water. - Google Patents

Abstract

PURPOSE: A settlement method of a well open caisson for constructing an underwater pier foundation is provided to settle a well open caisson exactly and rapidly. CONSTITUTION: The settlement method of a well open caisson for constructing an underwater pier foundation comprises the steps of installing many projections(2) on the upper and lower ends of a well open caisson(1), fixing an upper fixing plate(3) and a lower fixing plate(4) to make a water pipe(5) pass through an inner race of a ball bearing(7), placing a liquid tank(10) provided with a partition room(12) divided into many partition walls(11) on the well open caisson(1), connecting cylinders(20,20a) vertically on the lower side of the liquid tank(10) to let rods(21,21a) of the cylinders(20,20a) penetrate through holes(22,22a) of the upper and lower fixing plates(3,4), then connecting with a circle pressure plate(23) located on the lower side of the lower fixing plate(4).

Description

Method of subsiding well open caisson for constructing piers under the water.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an orthodontic settlement method for facilitating settlement in the orthodoxy (Well open caisson) method used to build a bridge pier in a state where water flows. In order to construct, first, a plurality of bridges are constructed at a constant height vertically from the lower phase, and then a bridge device is placed on the top of the bridge, and a bridge deck of fixed length is fixed to the top of the bridge device. The bridge is to be built by connecting the top plate, in which the orthogonal construction method is used as a construction method for constructing the bridge foundation underwater, reference to help understanding the orthodox settlement method for the construction of underwater bridges implemented in the present invention If you outline the general orthodox method,

Secure the frame (orthodox) of the reinforced concrete at the place where the foundation (pier foundation) is to be installed, and excavate the earth and sand settled inside it to sink the frame, and settle the concrete as a stepping stone to reach a predetermined depth. For ease of use, the lower end of the frame is like a knife-shaped blade tip, and when the settlement is not self-weight only, a forced load is applied and air or water is sprayed on the outside of the frame to reduce friction between the wall and the soil. In addition, the cross-sectional shape of the frame has a circular, oblong, rectangular shape, etc., and the internal space of the frame after settlement is a method of sifting concrete or force.

As described above, in general, the sediments of the orthodoxy are excavated while the orthodox is submerged to the hard soil of the bottom, and if the area is difficult to settle due to the soil quality of the lower part of the space, the sediments of the orthodoxy are excavated. Although the resistance value of the concrete is to be minimized, it is difficult to settle down realistically, so it is necessary to settle the inside by laying down while applying a forced load with a concrete mass, which is a separate heavy weight, and to pour the concrete sequentially. There has been a problem that causes excessive demand for construction costs.

1 is a partially cutaway perspective view of an apparatus for orthodox settlement implemented according to the present invention

2 is a detailed perspective view of the driving unit in FIG.

3 is a cross-sectional view taken along the line A-A 'in FIG.

Figure 4 is an overall longitudinal cross-sectional view of the device for orthodox settlement implemented according to the present invention

FIG. 5 is a longitudinal cross-sectional view of the state in which the gravel and the like remaining in the orthodox inner lower tip portion are consolidated into the soft ground outside the orthodox chamber in FIG.

<Code Description of Main Parts of Drawing>

1. Orthodoxy (Well open caisson) 2,2a, 2b, 2c. Stone jaw

3. Upper fixing plate 4. Lower fixing plate

5. Passing pipe 6. Through hole

7. Ball bearing 8. Water sprayer

10. Liquid tank 11. Bulkhead

12. Compartment 20,20a. cylinder

21,21a. Cylinder rod 22, 22a. Through

23. Circular Press Plate 31,32. motor

33,33a, 33b, 33c. Chain gear 34,34a. Power

40, 40a, water discharge pipe 41, 41a. Earth and sand discharge pipe

50. Flexible Ball

The present invention solves the above-mentioned problems and can be constructed faster and construction of a solid bridge, as well as a method devised to subside orthodoxy more easily even in relatively hard soil, attached drawings Based on the above, it is as follows.

In order to build a solid foundation in the riverbed (L), such as rivers or rivers, a plurality of stone jaws each at the upper and lower ends of the inner circumferential surface of the orthodox (1) having a predetermined diameter, height and thickness of concrete, and the inside being hollow (1a) (2) (2a) (2b) (2c) protruding to fix the upper fixing plate (3) and the lower fixing plate (4), but the upper fixing plate (3) and the lower fixing plate (4) a plurality of (four on the drawing) In the construction of the pipe through-hole 6 through which the water pipe 5, the lower end of which is sealed, penetrates into the pipe through-hole 6, each through-hole ( 6), through each of the water passing pipes 5 through an inner race of the ball bearing 7 through the ball bearing 7, the water passing pipes 5 rotate, and each water passing pipe A plurality of water spray holes 8 are laid at the lower end peripheral wall of the pipe 5 so that the water is horizontal through the water spray holes 8. And a cylindrical liquid tank having a radially disposed liquid storage chamber 12 radially disposed therein with a plurality of partitions 11 therein as an auxiliary load on the upper surface of the cylinder 1 to subside the cylinder 1. While 10 are positioned, a plurality of cylinders 20 (two in the drawing) fixed to the bottom of the cylindrical liquid tank 10 are vertically installed, and each of the cylinders 20, 20a Circular pressure plate provided separately toward the bottom of the lower fixing plate 4 by penetrating the rods 21 and 21a so as to pass freely through the through holes 22 and 22a installed in the upper fixing plate 3 and the lower fixing plate 4. While speaking with (23), a through hole (22b) through which the water pipe (5) penetrates is also installed in the circular pressing plate (23), and two motors (31) and (32) are respectively installed on the upper surface of the upper fixing plate (3). The chains installed on the water passing pipes 5 by means of transmission means 34 and 34a, such as chains, respectively, on the chain gears 33 and 33a built up in the motors 31 and 32, respectively. By allowing the gears 33b and 33c to be electrically driven, the water passing pipes 5 can be rotated in the same direction by the rotation of the chain gears 33 and 33a on the shafts of the motors 31 and 32. Four separate water discharge pipes (40) (40a) and four soil discharge pipes (41) (41a) are mounted vertically on each of four outer peripheral surfaces of the authentic (1) equipped device vertically in a pair of two The lower end of the discharge pipe (40) (40a) is bent at a predetermined angle in the outer direction of the cylinder (1) to make a device of the fixed structure mounted on the outer peripheral surface of the cylinder (1), and the cylinder (1) ) Is settled to a predetermined depth by its own weight, but the contact resistance between the orthodox 1 and the earth and sand is large.

In this case, the water is stored in the liquid tank (water tank) placed on the top of the cylinder 1 according to the present invention, and the cylinder 1 is continuously lowered in the vertical direction, but if the cylinder 1 is tilted in one direction, When settled, the water is lowered only to the compartment 12 located on the opposite side of the inclined direction, and the orthodox 1 is vertically settled by draining the water to the compartment 12 on the inclined side, so that the water tank 10 When the motors 31 and 32 mounted on the upper fixing plate 3 are operated while injecting high pressure water through each water pipe 5 selectively with the pressure load or the ground condition, each water pipe ( 5) is rotated in the same direction in the state of being penetrated and supported by the ball bearing 7 mounted on the upper fixing plate 3 and the lower fixing plate 4 by the transmission means 34, 34a of the inside of the cylinder 1 Water installed on the bottom wall of each water pipe (5) in the filled ground By spraying water with a strong earth power horizontally through the hole (8), while the water pipe (5) rotates in the ground, the soil soil is stirred and diluted by the earth output and rotation of the strong water discharged into the ground (1) ) Consolidated toward the bottom of the outer side, at which time the soil 100 in the earth and sand is diluted with water is discharged to the area outside the orthodox (1) through each soil discharge pipe (41, 41a), and the particle size remaining in the soil Large gravel (101) is pushed to the outside of the lower portion of the orthodox (1) while consolidating the surrounding ground, so the orthodox (1) receives very little frictional resistance of the ground, so it is very easy to settle down to the target point (1) You can do your work.

However, the earth and sand discharge pipes 41 and 41a have a predetermined distance therebetween, and the earth and sand discharge pipes 41 are internally embedded in the flexible ball 60 in a watertight and elastic manner in the inner circumferential surface of the earth and sand discharge pipes 41 and 41a. When the soil is discharged from (41a), the flexible ball 60 receives the discharge pressure and pushes up the soil, thereby eliminating the phenomenon that the soil falls due to its own weight, and according to the underground state of the lower portion of the authentic (1) When the dense ground exists, the circular pressing plate 23 is instantaneously moved up and down by ejecting and driving the rods 21 and 21a of the cylinders 20 and 20a mounted vertically on the bottom surface of the liquid tank 10. In this case, the physical state of the ground is softened from the gel state of the dense ground to the flowable sol state by the instantaneous lowering pressure, and the soil discharge pipes 41 and 41a are softened. It is easy to discharge, so that the authentic can be settled.

For reference, the upper end of each water pipe 5 is connected to the rotary joint (R, J: Rotary joint), so that there is no problem in rotation.

In submerging the orthodoxy by the orthodox settlement method for constructing the underwater piers constructed in accordance with the present invention configured as described above, the subsidence step by the weight of the orthogonal mass and the load settlement step by the weight of the liquid tank 10 and ground stirring dilution discharge Subsidence step and the softening step of hard ground by the instantaneous pressure of the circular pressure plate 23, etc. go through the multiple stages, so that the settlement of the orthodoxy more quickly and accurately regardless of the light and soft state of the river bed You can do it.

In addition, the discharge water discharged to the lower end of the water passing pipes 40 and 40a provided on the outer circumferential wall side of the cylinder 1 consolidates the gravel 10 outside the lower tip of the outer circumferential wall of the cylinder 1, thereby promoting settlement. .

Claims (3)

In submerging the orthodox (1) constituting the foundation of the bridge by sinking into the riverbed or riverbed of the riverbed, a plurality of stepping stones (2) (2a) (2b) (2c) respectively on the upper and lower ends of the inner circumference of the orthodox (1) The upper fixing plate (3) and the lower fixing plate (4), which is provided with a plurality of ball bearings (7) so that the water pipe (5) penetrates the inner race of the ball bearings (7), is fixed and the top of the authentic (1) The liquid tank 10 in which the compartment 12 is partitioned by the several partition 11 inside is mounted, and the cylinder 20, 20a is extended perpendicularly to the bottom surface of this liquid tank 10, and this cylinder 20 The rods 21 and 21a of the 20a are vertically penetrated through the through holes 22 and 22a installed in the upper fixing plate 3 and the lower fixing plate 4 so as to be vertically positioned at the bottom of the lower fixing plate 4. Authentic settlement method for constructing underwater piers based on the press plate 23 The top of the upper fixing plate (3), the motor 31, 32 is mounted on the chain gear 33, 33a and the upper end of the water pipe (5) built on the axis of the motor (31) (32) Orthodontic submerging method for basic construction of underwater piers by rotating the chain gears 33b and 33c and According to claim 1, wherein the upper end of the water pipe (5) is connected to the rotary joint (RJ), a plurality of water spray holes (8) are installed in the lower wall of the lower end, the bottom end of the water pipe (5) is to be sealed Authentic settlement method for basic construction