WO2018166523A1

WO2018166523A1 - Deep-water foundation and construction device and construction method therefor

Info

Publication number: WO2018166523A1
Application number: PCT/CN2018/079257
Authority: WO
Inventors: 王燏斌
Original assignee: 王燏斌
Priority date: 2017-03-17
Filing date: 2018-03-16
Publication date: 2018-09-20
Also published as: CN106801435A

Abstract

A deep-water foundation and construction device. The deep-water foundation comprises an upper foundation (1) and a lower foundation (2); the upper foundation (1) is hollow, and a guide device of the lower foundation (2) or a lower foundation construction device (4) is provided in the cavity; the bottom of the upper foundation (1) is cut into the rock and soil by means of an upper foundation construction device (3) using the self-weight or the negative pressure; the bottom of the lower foundation (2) is provided with chain cutters (5) during construction; the lower foundation construction device (4) comprises a fixed guiding device (4-1), a chain cutter power transmission device (4-2), a spoil treatment device (4-3), and a rack (4-4) which are provided in the cavity of the upper foundation (1). Also disclosed is a construction method for the deep-water foundation and construction device.

Description

Deep water foundation and construction device and construction method thereof

Technical field

The invention relates to a deep water foundation and a construction device and a construction method thereof, and belongs to the technical field of civil engineering foundation construction.

Background technique

The existing foundation technology of the sinking well is based on excavation in the well and relies on its own gravity to overcome the frictional resistance of the well wall and sink to the design elevation to seal the bottom. The main defects are: long construction period, high cost, difficult to correct, and encountered well When an obstacle such as a bottom stone is used, the blade foot is difficult to overcome and is prone to suddenness and is prone to accidents.

The existing caisson foundation technology needs to input compressed air to provide working conditions and push the water in the working chamber out of the room; its main defects are: complicated equipment, limited working time, low efficiency, high cost, difficult sealing, limited depth, and high pressure Under the conditions, it is prone to occupational diseases.

Summary of the invention

The invention provides a deep water foundation and construction device and a construction method thereof, the purpose of which is to overcome the defects of the prior art, and the main advantages thereof are: the foundation is composed of an upper foundation and a lower foundation; 1) the upper foundation utilizes self weight and negative Pressed into the rock and soil, the construction is simple; 2) The lower foundation is constructed in the cofferdam formed by the upper foundation, and the lower foundation itself has a combination device for excavating the bottom of the foundation rock, the factory section or the whole prefabricated foundation, the construction is simple, the construction period is short ,low cost.

The technical solution of the present invention, the deep water foundation comprises an upper foundation 1 and a lower foundation 2, the construction device comprises a construction device 3 of the upper foundation 1 and a construction device 4 of the lower foundation 2; the upper foundation 1 is hollow, and the foundation is provided with a foundation 2 or the guiding device of the device 4, the bottom of the upper foundation 1 is cut into the rock by the construction device 3 by its own weight or negative pressure; when the foundation 1 reaches the set depth, the water in the cavity of the foundation 1 is discharged, and the lower foundation is 2 is placed in the cavity of the upper foundation 1, and the bottom of the lower foundation 2 is constructed with a chain cutter 5; the construction device 4 includes a fixed guiding device 4-1 provided in the inner cavity of the upper foundation 1, and a chain cutter power transmission device 4-2 , spoil disposal device 4-3 and frame 4-4, device 4-2 and device 4-3 are all mounted on the frame 4-4, the device 4-2 and the base 2 and the chain knife 5 constitute a chain excavation device 6. The foundation 2 is a frame of the chain excavating device 6, the chain cutter 5 only excavates the rock at the bottom of the foundation 2, and the chain cutter 5 is composed of a chain 5-1 and a cutter 5-2 for excavating the rock and soil fixed on the chain 5-1. The device 4-1 guides the foundation 2 and/or the frame 4-4 to make the foundation 2 into a vertical state; during construction, the frame 4-4 and the foundation 2 The top is connected in one piece, the device 4-2 drives the chain cutter 5 to run along the track on the foundation 2, the chain cutter 5 excavates the rock at the bottom of the foundation 2, and brings the excavated geotechnical to the upper, the device 4-3 will chain The rock 5 from the bottom of the base 1 is separated from the chain cutter 5, and the frame 4-4 is simultaneously lowered with the foundation 2, and when the foundation 2 reaches the set depth, the construction device 3 and the chain cutter 5 are removed, and the grouting is performed. The foundation 1 and the foundation 2 are solidly integrated into a deep water foundation.

The invention has the advantages that the foundation is composed of an upper foundation and a lower foundation, the upper foundation is cut into the rock soil by its own weight and negative pressure, the lower foundation is constructed in the cofferdam formed by the upper foundation, and the lower foundation itself has a combination device for excavating the bottom rock of the foundation. , factory segmentation or overall prefabrication foundation, simple construction, short construction period and low cost.

DRAWINGS

1 is a schematic view showing a construction state of a deep water foundation composed of an upper foundation 1 and a lower foundation 2, and is also a schematic structural view of the construction device 3 and the construction device 4;

Figure 2 is a view in the direction of arrow A of Figure 1, and is also a schematic structural view of a construction vessel 3-2 composed of a hull 3-2-1 and a lifting device 3-2-2, and the lifting device 3-2-2 is a row frame structure. a moving walking track on the planes x and y;

Fig. 3 is a schematic view showing the structure of the pumping unit 3-1 and the construction vessel 3-2 which constitute the construction apparatus 3, and the top of the foundation 1A is higher than the water surface, and the hull 3-2- 1 Schematic diagram of the construction work platform that forms the deep water foundation together;

4 is a partial enlarged view of FIG. 1 , and is a schematic structural view of the lower base 2 being a mouth base 2A, and is also a fixed guiding device 4-1 constituting the construction device 4, a chain cutter power transmission device 4-2, and a spoil disposal device. 4-3 and the structure of the frame 4-4;

Figure 5 is a view in the direction of arrow A of Figure 4, which is also the chain cutter driving device 4-2-1, the chain knife tensioning device 4-2-2 and the sprocket 4-2-3 constituting the chain cutter power transmission device 4-2. The structural schematic diagram is also a structural schematic diagram of a chain excavating device 6 which is provided with only the bottom bottom of each of the foundations;

Figure 6 is a BB view of Figure 4, which is also a cross-sectional view of the frame 4-4 of the construction device 4, and is also a structural schematic view of the mud line 7-1 of the mud line device 7 on the frame 4-4, and is also a word The basic structure of the base 2A is composed of four one-word bases, and is also a structural schematic diagram of a chain conveyor composed of a side cover 8 and a chain cutter 5 of the foundation 2A with a bottom edge angle;

Figure 7 is a C-C view of Figure 4, and is also a schematic structural view of the mud nozzle 7-2 of the mud pipeline device 7 at the bottom of the foundation 2;

Figure 8 is a schematic structural view of the chain cutter 5, which is also a structural diagram of the chain 5-1 and the cutter 5-2, and is also a chain 5- consisting of A 10-byte 5-1-1 and B-decimal 5-1-2. A schematic diagram of the ten-byte structure of 1 is also a schematic diagram of the structure in which the chain 5-1 realizes space bending;

Figure 9 is a schematic view showing the structure of a deep water foundation as a bridge foundation;

Figure 10 is a view in the direction of arrow A of Figure 9, and is also a structural schematic diagram of a bridge foundation composed of four foundations 1A and four foundations 2A, and is also a construction platform for the deep water foundation at the top of the bridge foundation, with a lifting device at the top 3 - Schematic diagram of 2-2;

Figure 11 is a schematic view showing the structure of floating the prefabricated base 1A to a set position;

Figure 12 is a schematic view of the bottom water injection of the foundation 1A, so that the foundation 1A is erected; and the bottom of the foundation 1A is embedded in the rock under the action of the self-weight of the foundation 1A, and the bottom of the foundation 1A forms a closed cavity structure;

Figure 13 is a schematic view showing the structure of the apparatus 1 - 3 pumping the water in the bottom of the base 1A to form a negative pressure, and the foundation 1A is lowered to a set depth under the action of the self-weight and the negative pressure;

Figure 14 is a schematic view showing the structure of the device 1 - 4 in the base 1A cavity by extracting the water in the cavity of the base 1A, removing the device 3-1;

Figure 15 is a schematic view showing the structure of the first section (i.e., the bottom section) of the base 2A-1 loading device 4-1, the chain cutter 5, the mud line 7-1, and the mounting device 4-2;

16 is a schematic structural view of the rack 4-4 being synchronously lowered to a set depth along with the first segment base 2A-1;

Figure 17 is a schematic view showing the structure after the device 4 is separated from the first segment base 2A-1 and removed;

Figure 18 is a schematic view showing the structure of the second stage 2A-2 loading device 4-1, the chain cutter 5, the mud line 7-1 and the mounting device 4-2;

Figure 19 is a frame 4-4, the first segment base 2A-1 and the second segment base 2A-2 are simultaneously descended to a set depth;

Figure 20 is a schematic view showing the structure of the device 4 separated from the second segment base 2A-2 and removed;

Figure 21 is a schematic view showing the structure of the deep water foundation after the removal device 4 withdraws the chain cutter 5 after repeated construction.

1 in the figure is the upper foundation; 1A is the upper foundation is the cylindrical foundation; 2 is the lower foundation; 2A is the lower foundation for the word foundation; 2A-1 is the first segment foundation of the foundation 2A; 2A-2 is the foundation 2A The second stage foundation; 3 is the construction device of the upper foundation 1, including the pumping device 3-1 and the construction vessel 3-2; 3-1 is the pumping device; 3-2 is the construction vessel, including the hull 3-2-1 and The heavy device 3-2-2; 4 is a construction device of the lower foundation 2, comprising a fixed guiding device 4-1, a chain cutter power transmission device 4-2, a spoil disposal device 4-3 and a fixed space device 4-1 provided in the inner cavity of the upper foundation 1. The frame 4-4; 4-1 is a fixed guiding device of the construction device 4; 4-2 is a chain knife power transmission device of the construction device 4, and the chain knife driving device 4-2-1 and the chain knife tensioning device 4 2-2 and sprocket 4-2-3; 4-2-1 is chain cutter drive; 4-2-2 is chain knife tensioner; 4-2-3 is sprocket; 4-3 is construction a spoil disposal device of the device 4; 4-4 is a frame of the construction device 4; 5 is a chain cutter for excavating geotechnical, consisting of a chain 5-1 and a cutter 5-2 fixed to the chain 5-1; 1 is a chain constituting the chain cutter 5; 5-1-1 is A ten bytes constituting a chain of ten bytes; 5-1-2 is a chain 10 B octet of bytes; 5-2 is the tool constituting the chain cutter 5; 6 is a chain excavation device composed of the device 4-2-1 and the base 2A and the chain cutter 5; 7 is a mud pipeline device, including Mud line 7-1 and mud nozzle 7-2 at the bottom of foundation 2; 7-1 is the mud line of mud line device 7; 7-2 is the mud nozzle of mud line device 7 at the bottom of foundation 2; The side cover of the base 1 with a beveled corner at the bottom.

detailed description

The deep water foundation comprises an upper foundation 1 and a lower foundation 2, the construction device comprising a construction device 3 of the upper foundation 1 and a construction device 4 of the lower foundation 2; the upper foundation 1 is hollow, and the guiding device of the foundation 2 or the device 4 is provided in the cavity The bottom of the upper foundation 1 is cut into the rock by the construction device 3 by its own weight or negative pressure; when the foundation 1 reaches the set depth, the water in the foundation 1 cavity is discharged, and the lower foundation 2 is placed in the upper foundation 1 In the cavity, the bottom of the lower foundation 2 is constructed with a chain cutter 5; the construction device 4 includes a fixed guiding device 4-1 disposed in the inner cavity of the upper foundation 1, a chain cutter power transmission device 4-2, and a spoil disposal device 4- 3 and the frame 4-4, the device 4-2 and the device 4-3 are both mounted on the frame 4-4, the device 4-2 and the base 2 and the chain knife 5 constitute a chain excavating device 6, and the base 2 is chained For the frame of the excavating device 6, the chain cutter 5 only excavates the rock at the bottom of the foundation 2, and the chain cutter 5 is composed of a chain 5-1 and a cutter 5-2 fixed to the rock shovel fixed on the chain 5-1; The foundation 2 and/or the frame 4-4 are guided to make the foundation 2 into a vertical state; during construction, the frame 4-4 is integrated with the top of the foundation 2, and the device 4-2 The drive chain cutter 5 runs along the track on the foundation 2, the chain cutter 5 excavates the rock at the bottom of the foundation 2, and brings the excavated geotechnical to the upper, and the device 4-3 brings the chain cutter 5 from the bottom of the foundation 1 The rock and soil are separated from the chain cutter 5, and the frame 4-4 is synchronously descended along with the foundation 2. When the foundation 2 reaches the set depth, the construction device 3 and the chain cutter 5 are removed, and the foundation 1 and the foundation 2 are integrally joined. Into the deep water foundation.

The construction device 3 includes a pumping device 3-1 and a construction vessel 3-2. The device 3-1 is integrated with the foundation 1 to generate a negative pressure at the bottom of the foundation 1.

The device 4-2 is composed of a chain knife driving device 4-2-1, a chain knife tensioning device 4-2-2 and a sprocket 4-2-3.

The foundation 1 described is a cylindrical foundation 1A.

The base 2 is a word base 2A, and the word base 2A is composed of four one-word bases, each of which is provided with a chain excavating device 6 for excavating only the respective bottom rock, that is, a rack of the device 4. There are four devices 4-2 on the 4-4.

The deep water foundation is the bridge foundation, and the bridge foundation includes several foundations 1A and several foundations 2A.

The frame 4-4 and the base 2 in the apparatus 4 further include a mud line device 7 connected to the mud nozzle 7-2 at the bottom of the base 2.

The top of the foundation 1 is above the water surface.

The top of the foundation 1 is a deep water-based construction work platform, and a lifting device is arranged above.

The construction method described is divided into the following steps:

1) Prefabrication of foundation 1, segmentation or integral prefabrication foundation 2 at the factory;

2) Floating the base 1 level to the set position;

3) Fill the bottom of the foundation 1 to make the foundation 1 erect;

4) using the device 3 under the action of its own weight, the bottom of the foundation 1 is embedded in the rock soil, and the bottom of the foundation 1 forms a closed cavity;

5) Starting device 3-1, pumping the water in the bottom of the base 1 to make a negative pressure;

6) Under the action of the foundation 1 self-weight and negative pressure, the foundation 1 is lowered to the set depth;

7) Pull out the water in the foundation 1 cavity, remove the device 3-1, and install the device 4-1 in the base 1 cavity;

8) transport the first section of the foundation 2, the bottom section foundation 2-1, to the site, into the device 4-1, install the chain knife 5 and the mud pipeline 7-1;

9) Connect the bottom of the frame 4-4 in the device 4 to the top of the first segment base 2-1, and connect the chain knife 5 at the bottom of the device 4 with the chain knife 5 at the top of the first segment base 2-1 to form a chain. The excavating device 6 connects the mud pipeline 7-1 at the bottom of the device 4 with the mud pipeline 7-1 at the top of the first section foundation 2-1;

10) Starting device 4-2, device 4-2 drives the chain cutter 5 to run along the track on the foundation 2-1, and the chain cutter 5 excavates the rock at the bottom of the first section of the foundation 2-1, and the excavated rock and soil Bringing to the upper, the device 4-3 separates the rock from the bottom of the base 2-1 with the chain cutter 5;

11) The frame 4-4 is synchronously lowered to the set depth along with the first segment base 2-1;

12) separating and removing the device 4 from the first segment base 2-1;

13) loading the second stage foundation 2-2 into the device 4-1;

14) connecting the bottom of the second section foundation 2-2 with the top of the first section foundation 2-1, the second section of the base 2-2 bottom chain knife 5 and the first section of the base 2-1 top chain knife 5 Connected, connecting the mud line 7-1 at the bottom of the second stage foundation 2-2 to the mud line 7-1 at the top of the first stage foundation 2-1;

15) connecting the bottom of the frame 4-4 in the device 4 to the top of the second segment base 2-2, connecting the chain knife 5 at the bottom of the device 4 with the chain knife 5 at the top of the second segment base 2-2, The chain excavating device 6 connects the mud pipeline 7-1 at the bottom of the device 4 with the mud pipeline 7-1 at the top of the second section foundation 2-2;

16) Starting device 4-2, device 4-2 drives the chain cutter 5 to run along the track on the foundation 2, and the chain cutter 5 excavates the rock at the bottom of the first section of the foundation 2-1, and brings the excavated geotechnical to the upper The device 4-3 separates the rock from the bottom of the base 2 with the chain cutter 5 from the chain cutter 5;

17) The frame 4-4, the first segment base 2-1 and the second segment base 2-2 are synchronously descended to a set depth;

18) separating and removing the device 4 from the second segment base 2-2;

After repeating the above-mentioned 13, 14, 15, 16, 17, and 18 to complete the connection of the sections of the foundation 2 and descending to the set depth, the removing device 4 draws the chain cutter 5 and then injects the concrete to complete the construction of the deep water foundation.

The technical solution of the present invention is further described below with reference to the accompanying drawings:

As shown in FIGS. 1 to 3, the deep water foundation includes an upper foundation 1A and a lower foundation 2A, and the construction device includes a construction device 3 of the upper foundation 1A and a construction device 4 of the lower foundation 2A; the upper foundation 1A is hollow, and the cavity is provided therein. With the guiding device of the foundation 2 or the device 4, the bottom of the upper foundation 1A is cut into the rock by the construction device 3 by its own weight or negative pressure; when the foundation 1 reaches the set depth, the water in the cavity of the foundation 1 is discharged. The lower foundation 2 is placed in the cavity of the upper foundation 1, and the bottom of the lower foundation 2 is constructed with a chain cutter 5; the construction device 3 includes a pumping device 3-1 and a construction vessel 3-2, and the device 3-1 is connected to the foundation 1 Integral, the bottom of the foundation 1 generates negative pressure, 3-2 is the construction vessel, including the hull 3-2-1 and the lifting device 3-2-2, and the lifting device 3-2-2 is a row structure, which can be The x and y directions move. The top of the foundation 1A is higher than the water surface. The top of the foundation 1A and the hull 3-2-1 form a deep water foundation construction work platform, and the lifting device 3-2-2 is arranged above.

As shown in FIGS. 4 to 8, the construction device 4 includes a fixed guide 4-1, a chain cutter power transmission device 4-2, a spoil treatment device 4-3, and a frame 4-4 provided in the inner cavity of the upper base 1A. The device 4-2 and the device 4-3 are both mounted on the frame 4-4, the device 4-2 and the base 2 and the chain knife 5 constitute a chain excavating device 6, and the foundation 2 is a frame of the chain excavating device 6, The chain cutter 5 only excavates the rock at the bottom of the foundation 2, and the chain cutter 5 is composed of a chain 5-1 and a cutter 5-2 fixed to the rock shovel on the chain 5-1; the device 4-1 is for the base 2 and/or the frame 4-4 guides to make the foundation 2A into a vertical state; during construction, the frame 4-4 is integrated with the top of the foundation 2, and the device 4-2 drives the chain cutter 5 to run along the track on the foundation 2, the chain cutter 5 Excavate the rock at the bottom of the foundation 2A and bring the excavated rock to the top. The device 4-3 separates the rock from the bottom of the base 2A with the chain cutter 5, and the frame 4-4 follows The foundation 2A is simultaneously lowered synchronously. When the foundation 2A reaches the set depth, the construction device 3 and the chain cutter 5 are removed, and the foundation 1A and the base 2A are solidly joined to form a deep water foundation.

As shown in Fig. 9 to Fig. 10, the deep water foundation is the bridge foundation, and the bridge foundation includes several foundations 1A and several foundations 2A.

As shown in Fig. 11 to Fig. 21, the construction method is divided into the following steps:

1) prefabricated foundation 1A at the factory, segmented or integral prefabricated foundation 2A;

2) Floating the base 1A level to the set position;

3) Filling the bottom of the foundation 1A to make the foundation 1A erect;

4) using the device 3 under the action of its own weight, the bottom of the foundation 1A is embedded in the rock soil, and the bottom of the foundation 1A forms a closed cavity;

5) Starting device 3-1, pumping the water in the bottom of the base 1A to close the cavity to form a negative pressure;

6) Under the action of the foundation 1A dead weight and negative pressure, the foundation 1A is lowered to the set depth;

7) Pull out the water in the base 1A cavity, remove the device 3-1, and install the device 4-1 in the base 1A cavity;

8) transport the first section of the foundation 2A, the bottom section foundation 2A-1, to the site, into the device 4-1, install the chain knife 5 and the mud pipeline 7-1;

9) Connect the bottom of the frame 4-4 in the device 4 to the top of the first segment base 2A-1, and connect the chain knife 5 at the bottom of the device 4 with the chain knife 5 at the top of the first segment base 2A-1 to form a chain. The excavating device 6 connects the mud pipeline 7-1 at the bottom of the device 4 with the mud pipeline 7-1 at the top of the first section foundation 2A-1;

10) Starting device 4-2, device 4-2 drives the chain cutter 5 to run along the track on the foundation 2A-1, and the chain cutter 5 excavates the rock at the bottom of the first segment of the base 2A-1, and the excavated rock and soil Bringing to the upper, the device 4-3 separates the rock from the bottom of the base 2A-1 with the chain cutter 5;

11) The frame 4-4 is synchronously lowered to the set depth along with the first segment base 2A-1;

12) separating and removing the device 4 from the first segment base 2A-1;

13) loading the second stage foundation 2A-2 into the device 4-1;

14) connecting the bottom of the second section foundation 2A-2 with the top of the first section foundation 2A-1, the second section of the base 2A-2 bottom chain knife 5 and the first section of the base 2A-1 top chain knife 5 Connected, connecting the mud line 7-1 at the bottom of the second stage foundation 2A-2 to the mud line 7-1 at the top of the first stage foundation 2A-1;

15) connecting the bottom of the frame 4-4 in the device 4 to the top of the second segment base 2A-2, connecting the chain knife 5 at the bottom of the device 4 with the chain knife 5 at the top of the second segment base 2A-2, a chain excavating device 6, connecting the mud line 7-1 at the bottom of the device 4 with the mud line 7-1 at the top of the second stage base 2A-2;

16) Starting device 4-2, device 4-2 drives the chain cutter 5 to run along the track on the foundation 2A, and the chain cutter 5 excavates the rock at the bottom of the first section of the foundation 2A-1, and brings the excavated rock and soil to the upper Fang, the device 4-3 separates the rock from the bottom of the base 2A with the chain cutter 5;

17) the frame 4-4, the first segment base 2A-1 and the second segment base 2A-2 are synchronously descended to a set depth;

18) separating and removing the device 4 from the second segment base 2A-2;

After repeating the above-mentioned 13, 14, 15, 16, 17, and 18 to complete the connection of each section of the foundation 2A and descending to the set depth, the removing device 4 draws the chain cutter 5 and then injects the concrete to complete the construction of the deep water foundation.

Claims

A deepwater foundation and construction apparatus characterized in that the deep water foundation comprises an upper foundation (1) and a lower foundation (2), and the construction device comprises a construction device (3) of the upper foundation (1) and a construction device of the lower foundation (2) ( 4); the upper foundation (1) is hollow, and the guiding device of the foundation (2) or the device (4) is provided in the cavity, and the bottom of the upper foundation (1) is cut by the construction device (3) by its own weight or negative pressure. After the foundation (1) reaches the set depth, the water in the foundation (1) cavity is discharged, and the lower foundation (2) is placed in the cavity of the upper foundation (1), and the lower foundation (2) The bottom part is constructed with a chain knife (5); the construction device (4) includes a fixed guiding device (4-1), a chain cutter power transmission device (4-2), and spoil disposal in the inner cavity of the upper foundation (1). The device (4-3) and the frame (4-4), the device (4-2) and the device (4-3) are both mounted on the frame (4-4), the device (4-2) and the base (2) And the chain knife (5) constitutes the chain excavation device (6), the foundation (2) is the frame of the chain excavation device (6), the chain knife (5) only excavates the rock at the bottom of the foundation (2), the chain knife (5) consisting of a chain (5-1) and a cutter (5-2) fixed to the rock (1) on the chain (5-1); the device (4-1) is based on the foundation ( 2) and / or the frame (4-4) is guided to make the foundation (2) into a vertical state; during construction, the frame (4-4) is integrated with the top of the foundation (2), and the device (4- 2) The drive chain cutter (5) runs along the track on the foundation (2), the chain cutter (5) excavates the rock at the bottom of the foundation (2), and brings the excavated rock to the top, the device (4-3) The geotechnical belt (5) is separated from the chain knife (5) from the bottom of the foundation (1), and the frame (4-2) is simultaneously lowered with the foundation (2), when the foundation (2) is set. The depth is determined, the construction device (3) and the chain knife (5) are removed, the grouting is made and the foundation (1) and the foundation (2) are solidly joined to form a deep water foundation.
A deep water foundation and construction apparatus according to claim 1, wherein said construction apparatus (3) comprises a water pumping device (3-1) and a construction vessel (3-2), the device (3-1) and The foundation (1) is joined together to create a negative pressure at the bottom of the foundation (1).
A deep water foundation and construction apparatus according to claim 1, wherein said apparatus (4-2) is driven by a chain cutter (4-2-1) and a chain knife tensioning device (4-2-). 2) and sprocket (4-2-3).
A deep water foundation and construction apparatus according to claim 1, characterized in that said foundation (1) is a cylindrical foundation (1A).
A deep water foundation and construction apparatus according to claim 1, wherein said foundation (2) is a word base (2A), and the word base (2A) is composed of four one-word bases, each of which The word base is provided with a chain excavation device (6) for excavating only the respective bottom rock, that is, four devices (4-2) are provided on the frame (4-4) of the device (4).
A deepwater foundation and construction apparatus according to claim 1, wherein said deep water foundation is a bridge foundation, and the bridge foundation comprises a plurality of foundations (1A) and a plurality of foundations (2A).
A deep water foundation and construction apparatus according to claim 1, wherein the frame (4-4) and the foundation (2) in the apparatus (4) further comprise a mud pipeline device (7). The mud line (7-1) is connected to the mud nozzle (7-2) at the bottom of the foundation (2).
A deepwater foundation and construction apparatus according to claim 1 wherein the top of said foundation (1) is above the water surface.
A deep water foundation and construction apparatus according to claim 8, wherein the top of the foundation (1) is a deep water foundation construction work platform, and a lifting device is arranged above.
A construction method for a deep water foundation and a construction apparatus according to claim 1, wherein said construction method is as follows:

1) in the factory segmentation or overall basis (1), segmentation or overall prefabrication basis (2);

2) float the base (1) level to the set position;

3) Fill the bottom of the foundation (1) to make the foundation (1) erect;

4) using the device (3) under the action of its own weight, the bottom of the foundation (1) is embedded in the rock, and the bottom of the foundation (1) forms a closed cavity;

5) Starting device (3-1), pumping the bottom of the foundation (1) to close the water in the cavity to form a negative pressure;

6) Under the action of the foundation (1) self-weight and negative pressure, the foundation (1) is lowered to the set depth;

7) Pull out the water in the foundation (1), remove the device (3-1), and install the device (4-1) in the base (1) cavity;

8) Transport the first (ie bottom) foundation (2-1) of the foundation (2) to the site, install the device (4-1), install the chain cutter (5) and the mud pipeline (7-1) );

9) Connect the bottom of the frame (4-4) in the device (4) to the top of the first segment base (2-1), and the chain knife (5) at the bottom of the device (4) with the first segment foundation ( 2-1) The top chain cutter (5) is connected to form a chain excavation device (6), and the mud pipe (7-1) at the bottom of the device (4) and the mud pipe at the top of the first segment foundation (2-1) Road (7-1) connected;

10) Starting device (4-2), the device (4-2) drives the chain cutter (5) to run along the track on the foundation (2-1), and the chain knife (5) excavates the first segment foundation (2-1) The bottom of the rock and soil, and the excavated rock and soil is brought to the top, the device (4-3) separates the rock and soil brought from the bottom of the base (2-1) by the chain cutter (5) and the chain cutter (5);

11) The rack (4-4) is synchronously descended to the set depth along with the first stage base (2-1);

12) separating and removing the device (4) from the first segment foundation (2-1);

13) loading the second stage foundation (2-2) into the device (4-1);

14) Connect the bottom of the second section foundation (2-2) to the top of the first section foundation (2-1), and the chain knife (5) at the bottom of the second section foundation (2-2) with the first section foundation (2-1) The top chain cutter (5) is connected, and the mud pipeline (7-1) at the bottom of the second section foundation (2-2) and the mud pipeline at the top of the first section foundation (2-1) ( 7-1) connected;

15) Connect the bottom of the frame (4-4) in the device (4) to the top of the second section foundation (2-2), and the chain knife (5) at the bottom of the device (4) and the second section foundation ( 2-2) The top chain cutters (5) are connected to form a chain excavation device (6), and the mud pipe (7-1) at the bottom of the device (4) and the mud at the top of the second segment foundation (2-2) The pipeline (7-1) is connected;

16) Starting device (4-2), the device (4-2) drives the chain knife (5) to run along the track on the foundation (2), and the chain knife (5) excavates the bottom of the first segment base (2-1) Geotechnical, and the excavated geotechnical soil is brought to the top, and the device (4-3) separates the rock and soil brought by the chain cutter (5) from the bottom of the foundation (2) with the chain cutter (5);

17) The frame (4-4), the first segment base (2-1) and the second segment base (2-2) are synchronously descended to a set depth;

18) separating and removing the device (4) from the second segment foundation (2-2);

Repeat steps 13), 14), 15), 16), 17), 18) to complete the connection of each section of the foundation (2) and descend to the set depth, and then remove the chain cutter (5) and then infuse the removal device (4). Concrete, complete the construction of deep water foundation.