WO2016155659A1

WO2016155659A1 - I-type sheet pile for tunnel construction

Info

Publication number: WO2016155659A1
Application number: PCT/CN2016/078278
Authority: WO
Inventors: 王燏斌
Original assignee: 王燏斌
Priority date: 2015-04-03
Filing date: 2016-04-01
Publication date: 2016-10-06
Also published as: CN104727303B; CN104727303A

Abstract

An I-type sheet pile for tunnel construction comprises load bearing bodies (4-1), sheet piles (4-3), and a supporting crossbeam (4-4). The load bearing bodies (4-1) are symmetrically disposed on two sides of the supporting crossbeam (4-4). The sheet piles (4-3) are disposed at lower ends of the load bearing bodies (4-1). Splicing units are disposed at two ends of the I-type sheet pile; when the I-type sheet piles are spliced, a first filling area (4-8) is formed between the splicing units, and the first filling area (4-8) is filled with a filler for stopping water. The I-type sheet pile does not affect waterway traffic in a wide water area, and tunnel construction of a long distance and an extra-long distance can be implemented; an excavation area is smaller, the excavated earth volume is smaller, and influences on the environment is small; the construction period can be shortened, and construction cost can be lowered.

Description

I type sheet pile for tunnel construction

Technical field

The invention relates to an I-shaped sheet pile which can be used for tunnel construction, and belongs to the technical field of tunnel construction.

Background technique

Existing tunnel construction usually has a long construction period, is costly, and has a large impact on the environment. Therefore, shortening the construction period, reducing construction costs, improving the construction environment, and reducing environmental impact have always been an urgent problem for the tunnel industry.

Summary of the invention

The invention provides an I-shaped sheet pile for tunnel construction, the purpose of which is to overcome the above defects existing in the prior art, shorten the tunnel construction period, reduce the construction cost, and not affect the route passage in the wide water area, and solve the problem in the shallow water. Technical problems in constructing tunnels under land or medium-deep water conditions.

The technical solution of the present invention: an I-shaped sheet pile for tunnel construction, the structure thereof comprises a bearing body 4-1, a sheet pile 4-3, and a supporting beam 4-4, wherein the bearing body 4-1 is symmetrically arranged on the supporting beam 4-4 On both sides, the sheet pile 4-3) is arranged at the lower end of the load-bearing body 4-1, and the splicing unit is arranged at both ends of the I-type sheet pile 4, and the splicing unit and the I-type sheet pile 4 and the I-type sheet pile 4 are spliced A first filling region 4-8 is formed between the splicing units, and the first filling region 4-8 is filled with a filler for stopping water.

The invention has the advantages that the tunnel construction period can shorten the tunnel construction period, reduce the construction cost, and does not affect the route passage in the wide water area; the long-distance and ultra-long-distance tunnel construction can be realized, the excavation area is smaller, and the earthwork volume excavated Less, less impact on the environment.

DRAWINGS

Fig. 1 is a cross-sectional view of a body of a conventional cofferdam cut-out method.

Figure 2 is a schematic view of the movable cofferdam cut-out method during construction.

Figure 3 is a cross-sectional view taken along line E-E of Figure 2;

Figure 4 is a plan view of the carcass.

Figure 5.1 is a side view of the shaft after enclosing the carcass.

Figure 5.2 is a schematic view showing the state after the I-shaped sheet pile 4 at the left end of the removal body 2 is pulled out.

Fig. 5.3 is a schematic view showing the state after the B-shaped end face partition 6b and the II-type plate pile 7 of the left end of the removal body 2 are pulled out.

Figure 5.4 shows the B-shaped end face partition 6b between the rear section 1-1 of the construction body and the front section 1-2 of the construction body. In the type II sheet pile 7, the state in which the rear section 1-1 of the construction body becomes the new demolition body 2 is shown.

Fig. 5.5 is a view showing a state in which the front end of the construction body 3 is pressed into the I-shaped sheet pile 4.

Figure 5.6 shows the A full-end partition 5a in the type II sheet pile 7 between the construction body 3 and the front section 1-2 of the construction body. The front section 1-2 of the original construction body becomes the rear section 1-1 of the construction body. The state of the body 3 becomes the state of the front section 1-2 of the new construction body.

Figure 6 is a front view of the I-type sheet pile.

Figure 7 is a plan view of an I-type sheet pile.

Figure 8 is a partial enlarged view of a portion A in Figure 7.

Figure 9 is a side view of an I-type sheet pile.

Figure 10 is a side view of the I-type sheet pile shaft.

Figure 11 is a force diagram of an I-type sheet pile.

Figure 12 is a schematic view of a first splicing unit.

Figure 13 is a schematic view of a second splicing unit.

Figure 14 is an axial side view of a Type II sheet pile.

Figure 15 is a plan view of a type II sheet pile.

Figure 16 is a partial enlarged view of a portion B in Figure 15.

Figure 17 is a side view of a type II sheet pile.

Figure 18 is a force diagram of a Type II sheet pile with a full face partition 5 or a contoured end face partition 6.

Figure 19 is a top plan view of a Type II sheet pile with full face partition 5 or contoured end face partition 6.

Figure 20 is a partial enlarged view of a portion C in Figure 19.

Figure 21 is a front elevational view of a Type II sheet pile with a full face partition 5.

Figure 22 is a front elevational view of a Type II sheet pile with a contoured end face partition 6.

Figure 23 is a front elevational view of the full face partition 5 .

Figure 24 is an axial side view of the full face partition 5 .

Figure 25 is a front elevational view of the contoured end face partition 6.

Figure 26 is a bottom plan view of the full section partition 5 or the contoured end face partition 6.

Figure 27 is a partial enlarged view of the portion D in Figure 26.

In the figure, 1 is the construction body, 1-1 is the rear section of the construction body, 1-2 is the front section of the construction body, 2 is the demolition body, 3 is the construction body, 4 is the I-type sheet pile, 4-1 is the load-bearing body, 4- 2 is the auxiliary sheet pile, 4-3 is the sheet pile, 4-4 is the support Beam, 4-5 is the walking track, 4-6 is the hinged buckle, 4-7 is the mounting groove, 4-8 is the first filling area, 4-9 is the hinged buckle, 5 is the full face partition, 5-1 is the partition 5-2 is a rectangular body, 5-3 is a second filling area, 6 is a contoured end face partition, 6-1 is a partition, 6-2 is a rectangular body, 6-3 is a contoured edge, and 7 is a type II plate. The pile and 8 are side partitions.

detailed description

As shown in Figure 6-10, the I-type sheet pile for tunnel construction includes a load-bearing body 4-1, a sheet pile 4-3, and a support beam 4-4, wherein the load-bearing body 4-1 is symmetrically arranged on the support beam 4-4. On both sides, the sheet pile 4-3 is arranged at the lower end of the load-bearing body 4-1, and the splicing unit is arranged at both ends of the I-type sheet pile 4, and the splicing unit and the splicing unit are used when the I-type sheet pile 4 and the I-type sheet pile 4 are spliced A first filling region 4-8 is formed between, which fills the filling for stopping the water.

The I-shaped sheet pile further includes an auxiliary sheet pile 4-2 installed at a lower end of the load-bearing body 4-1.

The I-type sheet pile also includes a walking rail 4-5 that is mounted on the top of the load-bearing body 4-1.

There are two supporting beams 4-4, and there is a mounting groove 4-7 between the two supporting beams 4-4, and a full-end partition 5 or a contoured end partition 6 can be placed in the mounting groove 4-7.

The full-end partition 5 includes a rectangular body 5-2 and a partition 5-1, wherein the partition 5-1 is installed at a lower portion of the rectangular body 5-2, and the full-end partition 5 and the I-type sheet pile 4 are at the intersection There is a connecting unit which forms a second filling region 5-3 between the connecting unit and the connecting unit, and the second filling region 5-3 can be filled with a filling for stopping water.

The contoured end face partition 6 includes a partition 6-1 and a rectangular body 6-2, and the lower portion of the partition 6-1 has a contoured edge 6-3 which is closely attached to both sides and the top of the tunnel. The contoured end face partition 6 and the I-type sheet pile 4 each have a connecting unit at the intersection, and a second filling area 5-3 is formed between the connecting unit and the connecting unit, and the second filling area 5-3 can be filled A filler for stopping water.

Example

The invention is applied to the tunnel construction under the shallow water and land conditions by the mobile cofferdam open cut method, comprising the following steps:

1) enclosing a carcass;

The carcass enclosed by the tunnel construction includes the construction body 1, the demolition body 2 and the construction body 3. The construction body 1 is a carcass of the tunnel construction site, and is partitioned by a side 8 and a full end face 5a (see Fig. 23). , shown in FIG. 24, and the A contoured end face partition 6a (shown in FIG. 25), the demolition body 2 is a carcass during the dismantling process. The side partition 8 on the left side of the construction body 1, the A contour end face partition 6a and the B contour end face partition 6b are formed. The construction body 3 is a body during construction, and the side of the right side of the construction body 1 is cut off. The full-face partition 5a and the B full-end partition 5b are enclosed; the two sides of the construction body 1, the demolition body 2 and the construction body 3 are side partitions 8, and the A-shaped end face between the construction body 1 and the demolition body 2 The partition 6a, between the construction body 1 and the construction body 3 is a full-face end partition 5a, and the construction body 1 includes the rear section 1-1 of the construction body and the front section 1-2 of the construction body, the rear section 1-1 of the construction body and the construction body Between the front section 1-2 is a type II sheet pile 7, and the side partition 8 is composed of a plurality of I-type sheet piles 4 (as shown in Figs. 6 and 7) and/or type II sheet piles 7 (Fig. 14, Fig. 14 15) the splicing composition, the number of the I-type sheet pile 4 and the type II sheet pile 7 is set according to the actual construction needs;

2) Digging the soil in the construction body 1 and constructing a tunnel.

The preferred method of this step is to dig up the soil in the construction body 1 and transport the tunnel module poured in the prefabricated field into the completed tunnel to construct the tunnel.

3) Remove the removal body 2:

For convenience of description, it is assumed that the construction body 3 does not move, the initial state is as shown in Fig. 5.1; the I-shaped sheet pile 4 and the II-type sheet pile 7 at the left end of the removal body 2 are pulled out, as shown in Fig. 5.2; the tunnel is constructed to the construction After the front section of the body is 1-2, the B-shaped end face partition 6b of the left end of the removed body 2 is pulled out, as shown in Figure 5.3; and the B-shaped end face partition 6b is placed in the rear section of the construction body 1-1 and the front part of the construction body. In the type II sheet pile 7 between 1-2, at this time, the rear part 1-1 of the construction body becomes a new demolition body 2, as shown in Fig. 5.4;

4) Construction of new construction body 3:

For convenience of description, it is assumed that the dismantled body 2 does not move, and the initial state is as shown in FIG. 5.4; the I-shaped sheet pile 4 and the II-type sheet pile 7 are pressed at the front end of the construction body 3, as shown in FIG. 5.5; the construction body 3 is pulled out. The full end face of the A-type sheet pile 7 between the front section 1-2 of the construction body is cut off by 5a. At this time, the construction body 3 becomes the front section 1-2 of the construction body, and the front section 1-2 of the original construction body becomes the construction body. Section 1-1, as shown in Figure 5.6; A full-end partition 5a and II-type sheet pile 7 is pressed into the right end of the I-shaped sheet pile 4 to form a new construction body 3, at this time, A full-end end partition 5a becomes B full-face partition 5b. If the new construction body 3 has water, the water in the construction body 3 should be discharged, as shown in Fig. 5.1; the construction of the construction body 3 is completed.

5) Repeat steps 2) through 4) until tunnel construction is completed.

In step 3), the extracted I-shaped sheet pile 4 can be used to construct the construction body 3, and the extracted B-shaped end surface partition 6b can be used to form a new demolition body 2, and the extracted type II sheet pile 7 is used. It can be used to construct the construction body 3;

In step 4), the extracted A full face partition 5a can be used to construct a new building body 3.

The I-type sheet pile 4, as shown in Figs. 6 to 10, serves to isolate water and soil on both sides of the sheet pile 4 for soil excavation and tunnel construction. The force diagram of the I-type sheet pile 4 is as shown in FIG.

The I-type sheet pile 4 has a structure including a bearing body 4-1, a sheet pile 4-3, and a supporting beam 4-4, and the bearing body 4-1 is symmetrically arranged on both sides of the supporting beam 4-4, the sheet pile 4-3 is disposed at the lower end of the load-bearing body 4-1, and there are splicing units at both ends of the I-type sheet pile 4, and the I-type sheet pile 4 and the I-type sheet pile 4 are spliced, between the splicing unit and the splicing unit A first filling region 4-8 is formed (as shown in FIGS. 12 and 13), and the first filling region 4-8 may be filled with a filler for stopping water.

The I-type sheet pile 4 further includes an auxiliary sheet pile 4-2 installed at a lower end of the load-bearing body 4-1, and when the I-type sheet pile 4 is fully inserted into position, the auxiliary sheet pile 4 -2 is also inserted into the soil.

The I-shaped sheet pile 4 further includes a traveling rail 4-5 mounted on the top of the load-bearing body 4-1. There are four traveling tracks 4-5.

The main function of the load-bearing body 4-1 is to make the vertical downward force acting on the top thereof pass through the bottom to the soil, for the sheet pile transfer trolley on the top, the end partition lift trolley, and the end-end pull pile trolley The working platform is provided by the end-press pile car.

The role of the sheet pile 4-3 is to isolate the water and soil on both sides of the I-type sheet pile 4 for soil excavation and tunnel construction.

The supporting beam 4-4 functions to withstand the water pressure transmitted from the load bearing bodies 4-1 on both sides and the pressure transmitted from the sheet piles 4-3.

The auxiliary sheet pile 4-2 functions as: 1. Filling the auxiliary sheet pile 4-2 and the sheet pile 4-3 with a filler for solving the problem of unevenness of the water bottom surface, and enhancing the water stopping effect.

The function of the walking track 4-5 is to provide a walking track for the sheet pile transfer trolley, the end partition lifting trolley, the end tail pile pulling machine, the end pile driver, the inner two for the sheet pile transfer trolley, and the outer two for the end face. The partition lift truck, the end-end pile-driving machine, and the end pile-pile machine are moved. This arrangement facilitates the sheet pile transfer trolley to enter the end partition lift truck, the end-end pile puller, and the end pile driver, and then the I-shaped sheet pile The 4 and II type sheet piles 7 are transferred.

The splicing unit functions as a water stop. 2. In order to form the first filling region 4-8, the splicing unit can prevent the filler from being lost after filling the first filling region 4-8 with the filling for stopping the water. The filler can further enhance the water stopping effect, and if there is a small amount of water seepage, it is solved by pumping or the like. to this end, The present application discloses the structure of two splicing units, as shown in FIGS. 12 and 13.

The structure of the first splicing unit is as follows: as shown in FIG. 12, two sides of the I-type sheet pile 4 are symmetrically mounted with two long hinged buckles 4-6, two hinged buckles 4-6 are hinged, and two sets of hinged buckles 4 -6 and the sides of two adjacent I-shaped sheet piles 4 collectively enclose the first filling region 4-8.

The structure of the second splicing unit is as follows: as shown in FIG. 13 , two sides of the I-shaped sheet pile 4 are symmetrically mounted with two long hinged buckles 4-9, two hinged buckles 4-9 can be docked, and two pairs of hinged buckles 4 The sides of the -9 and the adjacent two I-shaped sheet piles 4 collectively enclose the first filling region 4-8.

There may be a plurality of schemes for forming the first filling regions 4-8.

The advantage of the I-type sheet pile 4 is that the I-type sheet pile is a monolithic structure, which combines the traditional stepped sheet pile and the horizontal support into a single structure, the excavation area is smaller, and the amount of earthwork excavated is less.

The type II sheet pile 7 is as shown in Figs. 14 to 17, and the difference between the type II sheet pile 7 and the type I sheet pile 4 is to place the full end partition 5 (as shown in Fig. 21) and the contoured end partition. 6 (as shown in Figure 22), subjected to water and soil pressure on the full-end partition 5 and the contoured end-face partition 6 pressure, the force diagram shown in Figure 18.

The structural features of the type II sheet pile 7 and the type I sheet pile 4 are substantially the same, and also include the bearing body 4-1, the sheet pile 4-3, the supporting beam 4-4, and the splicing unit, with the difference that the supporting beam 4-4 has Two, a mounting groove 4-7 is disposed between the two supporting beams 4-4, and a full-end partition 5 (shown in FIG. 23) or a contoured end partition 6 can be placed in the mounting groove 4-7 (eg, As shown in FIG. 25, the type II sheet pile 7 is separated from the full-end partition 5 or the contoured end partition 6 at the intersection, and the full-end partition 5 or the contoured end partition 6 is placed in the installation slot 4- After the inside of the seventh, a second filling region 5-3 is formed between the connecting unit and the connecting unit. As shown in FIG. 20, the second filling region 5-3 may be filled with a filler for stopping water.

The structure of the connecting unit may be a hinged buckle 4-6.

A connecting device such as a bolt connection is installed in the mounting groove 4-7.

The load-bearing body 4-1, the sheet pile 4-3, the support beam 4-4, and the splicing unit on the type II sheet pile 7 have the same functions as the corresponding parts of the I-type sheet pile 4.

The function of the mounting groove 4-7 is to place the full end partition 5 or the contoured end partition 6 in the II type sheet pile 7, and connect the full end partition 5 or the contour end partition 6 to the II type plate through the connecting device. On the pile 7, a unitary structure is formed. The full-face partition 5 or the contoured end partition 6 is placed in the mounting groove 4-7, and after filling the second filling region 5-3 with the filler for stopping the water, the water stopping effect can be enhanced, as shown in FIG.

The function of the connecting device is that the full-end partition 5 or the contoured end-face partition 6 and the II-type sheet pile 7 can be connected together, and the embodiment can be connected by bolts.

The function of the connecting unit is to form a second filling area. After filling the filling area for stopping the water in the second filling area, the connecting unit can prevent the loss of the filling, and the filling can be used to stop the water, if there is a small amount of water seepage, Then solve it by pumping water.

The full-end partition 5 and the contoured end face partition 6, as shown in FIG. 21 to FIG. 27, the full-end partition 5 is used to isolate the water and the soil at the front end of the construction body 1; the contoured end partition 6 is used to isolate the construction body 1 Water and soil at the end.

The full-end partition 5 has a structure including a partition 5-1 and a rectangular body 5-2. The partition 5-1 is installed at a lower portion of the rectangular body 5-2, and the full-end partition 5 and the II-type sheet pile 7 are Each of the junctions has a connecting unit. After the full-face partition 5 is placed in the mounting groove 4-7 of the II-type sheet pile 7, a second filling area 5-3 is formed between the connecting unit and the connecting unit, as shown in FIG. The second filling region 5-3 may be filled with a filler for stopping water.

The contoured end face partition 6 is substantially the same as the full-end face partition 5, as shown in FIG. 22, and includes a partition 6-1 and a rectangular body 6-2, with the difference that the lower portion of the contoured end face partition 6 has a contoured edge 6- 3. The contoured edge 6-3 abuts the sides and top of the outer contour of the tunnel.

In order to reduce the pressing force when the full-end partition 5 or the contoured end partition 6 is pressed in, the full-end partition 5 or the contoured end partition 6 can be composed of several segments.

The function of the partition 5-1 or the partition 6-2 is to isolate the water and soil at the front end or the rear end of the construction body 1.

The functions of the rectangular body 5-2 or the rectangular body 6-2 are as follows: 1. To facilitate the extraction or press-in of the partition 5-1 or the partition 6-1, that is, to provide a uniform pull-out force when being pulled out or pressed in. Or press-in force; 2. The horizontal force applied to the partition 5-1 or the partition 6-1 is applied to the supporting beam 4-4 of the type II sheet pile 7; 3. if the rectangular body 5-2 or the rectangular body 6-2 When it is a cavity, it can be used to increase the buoyancy when pulling out or to increase the gravity when pushing in by means of drainage and water filling.

The function of the contoured edge 6-3 is to prevent the interference with the tunnel when the contoured end face partition 6 isolates the water and soil at the rear end of the construction body.

The main functions of the sheet pile transfer trolley are:

1. Transport type I sheet pile 4, type II sheet pile 7, full end partition 5 or contoured end partition 6;

2. Carry the contoured end face partition 6 and use it with the end face partition lift car to cut off the contoured end face 6 Put into the type II sheet pile 7 between the front section 1-2 of the construction body and the rear section 1-1 of the construction body;

3. Carrying the type II sheet pile 7 and using it together with the end face separation lifting trolley, and pulling out the full end partition 5 in the type II sheet pile 7 between the construction body 3 and the construction body 1 into the type II sheet pile 7.

The sheet pile transfer trolley, the structure comprising a transfer frame, a sheet pile support, a walking wheel, the plate pile support is symmetrically mounted on two sides of the transfer frame, and the traveling wheel is installed at a lower end of the transfer frame, The sheet pile bracket is used for supporting the I-type sheet pile 4, the type II sheet pile 7, the full-end partition 5, or the contoured end partition 6, which can be cut off at the side of the I-type sheet pile 4 and the type II sheet pile 7 Walking on the upper walking track 4-5, the middle of the transfer frame is also provided with a notch, and the full-end partition 5 or the contoured end face partition 6 can pass through the notch from the upper part of the sheet pile transfer trolley to the lower part, or from the board The lower part of the pile transfer trolley reaches the upper part.

The role of the sheet pile support is to support the sheet pile 4-3, and also to support the partition 5-1 and the partition 6-1.

The role of the walking wheel is to transport the trolley for the sheet pile transfer.

The walking principle of the walking wheel is: the walking wheel is composed of eight sets of lifting wheels, and when the sheet pile transfer trolley transitions from the high walking track 4-5 to the low walking track, the first group of wheels and the fifth group are firstly walked. The group wheel group is separated from the high walking track directly above the low walking track, and then the first group wheel group and the fifth group wheel group are extended downward until the low walking track is contacted, and the sheet pile transfer trolley continues to walk until the third group wheel group and The seventh group of wheels is separated from the high walking track directly above the low walking track, and then the second wheel group and the sixth group wheel group, the third group wheel group and the seventh group wheel group are extended downward until they contact the low walking track, the plate The pile transfer trolley continues to walk. When the fourth set of wheels and the eighth set of wheels are separated from the high travel track and directly above the low travel track, the fourth set of wheels and the eighth set of wheels extend downward until they touch the low travel track. . So far, the transition of the sheet pile transfer trolley from the high walking track to the low walking track has been completed. When the sheet pile transfer trolley transitions from a low travel track to a high travel track, the opposite is true. In the running direction, the spacing between any two sets of wheel sets is greater than the gap of the running track, so that the sheet pile transfer trolley can smoothly transition on the walking track.

The function of the notch is to cause the full end partition 5 or the contoured end partition 6 of the upper (lower) portion of the sheet pile transfer carriage to enter its lower (upper) portion.

The main functions of the end face lift truck are: 1. Pull out the full-end partition in the type II sheet pile 7 between the construction body 3 and the front section 1-2 of the construction body; 2. Place the contoured end face partition 6 into the construction body. The rear section 1-1 and the front section 1-2 of the construction body are in the type II sheet pile 7.

The full-section partition 5 and the contoured end-face partition 6 can be pressed in or pulled out by the end-face partitioning trolley.

The end face partition lifting trolley has a structure including a partitioning and pressing device, a frame, and a small opening and closing of the end face. The vehicle traveling wheel and the end partitioning lifting trolley bottom support are installed on the upper part of the frame, and the end surface partitioning lifting trolley traveling wheel is installed at the lower part of the frame, and the end surface of the lifting block of the lifting trolley is The bottom support of the end face lift lifting trolley is mounted, and the end face partitioning trolley traveling wheel can walk on the walking rails 4-5 on the I-type sheet pile 4 and the II-type sheet pile 7, and the bottom end of the end partitioning lifting trolley is supported. Supported on the soil when pulled out.

The partitioning and pressing device may be a functional component having a pull-out and press-in property such as a screw, and the function is to pull out or press the full-end partition 5 and the contoured end partition 6.

The function and walking principle of the end face partitioning trolley traveling wheel are the same as the sheet pile transfer trolley.

The function of the bottom support of the end face partitioning trolley is to transmit the vertical downward force on the end face blocking trolley to the soil.

The main function of the end-end pile driver is to pull out the I-type sheet pile 4, the type II sheet pile 7, the contoured end face partition 6, and place it in the sheet pile transfer trolley.

The end-end pile-drawing machine has a structure including a pile pulling frame, a pile pulling device, a traverse device, a tail end pile pulling machine traveling wheel, and a bottom end pile pulling machine bottom support, and the pile pulling device and the traverse device are installed An upper portion of the pile frame; the end-end pile driver traveling wheel is installed at a lower portion of the pile-drawing frame, and the end-end pile driver traveling wheel is on the I-type sheet pile 4 and the type II sheet pile 7 Walking on the walking track 4-5; the bottom support of the end-end pile pulling machine is installed at the bottom of the pile pulling frame, and the bottom support of the end-end pile pulling machine can be supported on the soil.

The pile pulling device may be a functional component of a hoist, a hoist, a chain, a screw, and the like having a pulling and lowering hanging device.

The traverse device may be a functional component having lateral movement similar to driving.

The bottom support of the end-end pile-driving machine traveling wheel and the end-end pile-driving machine has the same function as the end face of the end-face partitioning lifting trolley, the lifting trolley traveling wheel, and the end partitioning lifting trolley bottom support.

The function of the pile pulling device is to pull out the I-shaped sheet pile 4, the contoured end face partition 6, and the type II sheet pile 7.

The function of the traverse device is to place the I-shaped sheet pile 4, the contoured end face partition 6, and the type II sheet pile 7 which are pulled out by the pile pulling device on the sheet pile transfer trolley.

The main functions of the end pile driver are: 1. The I-type sheet pile 4, the full-end partition 5, and the II-type sheet pile 7 are removed and traversed from the sheet pile transfer trolley, and the I-type sheet pile 4 is fully End face partition 5, II type sheet pile 7 is pressed into the set position; 2. Clean the mud in front and level the foundation.

End pile driver, its structure includes pile pile frame, pile driving device, dredging leveling device, end pile driver a walking wheel, a bottom pile driver bottom support and a hoisting traverse device, the end pile driver traveling wheel is installed at a lower portion of the pile pile frame, and the end pile driver traveling wheel can be in the I-shaped plate Walking on the walking track 4-5 on the pile 4 and II type sheet pile 7; the lifting traverse device and the pile driving device are installed on the upper part of the pile pile frame; the bottom pile support machine bottom support is installed on the pile At the bottom of the frame 1, the bottom support of the end pile driver can be supported on the soil; the dredging leveling device is installed at the front lower portion of the pile pile frame.

The pile driving device may be a pile structure such as pile driving or heavy hammer.

The structure of the pile driving device comprises a screw drive device and a hydraulic cylinder. The screw drive device is mounted on the pile pile frame, and the hydraulic cylinder is installed at the lower end of the screw drive device. When the pile is pressed, the hydraulic cylinder firstly has the I type plate pile 4 Pressing down the stroke of a hydraulic cylinder, and then the screw drive pushes the hydraulic cylinder downward into the stroke of a hydraulic cylinder, and the cylinder is retracted synchronously, repeating the above two steps until the I-shaped sheet pile 4 is pressed into place.

The function of the bottom support of the end pile driver traveling wheel and the end pile driver is the same as that of the end face partition lifting trolley end partition lifting trolley traveling wheel and the end partition lifting trolley bottom support.

The function of the hoisting traverse device shown is to remove the I-shaped sheet pile 4, the full-end partition 5, and the II-type sheet pile 7 from the sheet pile transfer trolley.

The function of the pile driving device is to press the I-type sheet pile 4, the full-end partition 5, and the II-type sheet pile 7 into the set position.

The function of the dredging leveling device is to clean the sludge in front of the end press and level the construction foundation.

The method of pulling out and transporting the I-type sheet pile 4 is as follows: the end-end pile driver drives to the top of the I-shaped sheet pile 4 at the rear end of the removal body 2, and discharges the water in the load-bearing body 4-1 of the I-type sheet pile 4 to To reduce the pull-out force, the pile-pushing device pulls out the I-type sheet pile 4, the sheet pile transfer trolley drives to the right end below the end-end pile-driving machine, and the traverse device places the I-type sheet pile 4 on the sheet pile transfer trolley, the board The pile transfer trolley carries the I-shaped sheet pile 4 forward to the end pile driver.

In the same way, the type II sheet pile 7 is pulled out and transported.

For the same reason, pull out and transport the contoured end face partition 6.

Similarly, the type II sheet pile 7 with the contoured end face partition 6 is pulled out and transported.

The method of transporting the contoured end face partition 6 and pressing into the type II sheet pile 7 between the rear section 1-1 of the construction body and the front section 1-2 of the construction body is: the end face partition lift truck travels above the type II sheet pile 7, The sheet pile transfer trolley carries the contoured end face partition 6 to the underside of the end partition lift trolley, and the partition pull-out device suspends the contoured end partition 6 and puts it into the type II sheet pile 7.

The method of pulling out and transporting the full-end partition 5 in the type II sheet pile 7 between the construction body 3 and the front section 1-2 of the construction body is: the end-face partition lift truck travels above the type II sheet pile 7, and the pressure-removing device is blocked. Through the gap, the full-end partition 5 is pulled out to the sheet pile transfer trolley, and the sheet pile transfer trolley carries the full-end partition 5 forward.

The method of transporting and pressing into the type II sheet pile 7 is: the sheet pile transfer trolley carries the type II sheet pile 7 to the end pile driver, and the lifting and traversing device removes the type II sheet pile 7 from the sheet pile transfer trolley. And placed in the lower part of the pile driving device, filled into the weight body 4-1 of the II type sheet pile 7 and the rectangular body 5-2 of the full end partition 5, and the pile driving device presses the type II sheet pile 7 into the soil. Until the set position.

In the same way, the I-shaped sheet pile 4 is transported and pressed.

For the same reason, transport and press into the full face partition 5 .

For the same reason, the type II sheet pile 7 with the full-face partition 5 is transported and pressed.

Under terrestrial conditions, shallower groundwater conditions are equivalent to shallow water conditions, and deeper groundwater conditions do not require contoured end-face partitions 6 and full-end partitions5. Therefore, the mobile cofferdam cut-out method can also be applied under land conditions.

(B) Submerged cofferdam method for medium and deep water conditions, including the following steps:

1) enclosing the carcass: using the inverted box to enclose the construction body 1, the demolition body 2 and the construction body 3;

2) Digging the soil in the construction body 1 and constructing a tunnel;

3) Demolition of the demolition body 2: The demolition body 2 and the construction body 1 are penetrated, and the tunnel has completed the construction of the demolition body 2, and the steps include:

1Isolation of construction body 1 and demolition body 2:

Pressing the contoured end face partition 6 on the left side of the construction body 1 to fill the periphery of the contoured end face partition 6 to isolate the construction body 1 from the demolition body 2;

2 Pull out the demolition body 2, including:

a put down the A full face cut off 5a and B full face cut off 5b on both sides of the removal body 2;

b lifting the contoured end face partition 6 on the left side of the demolition body 2;

c discharge water from the cabin body, and introduce gas into the lower portion of the demolition body 2, so that the upward force of the dismantled body 2 is greater than the downward force, so that the demolition body 2 floats;

d During the process of lifting the body 2, the A full face partition 5a and the B full face partition 5b on both sides are also continuously lowered until the removal body 2 is pulled out;

4) Construction of the building body 3, the steps include:

1 The construction body 3 is docked with the construction body 1 : the construction body 3 is transported to the right side of the construction body 1 , and the construction body 3 and the splicing unit of the construction body 1 are butted;

2 sinking construction body 3: lowering the left and right sides of the construction body 3, the full face partition 5a and the B full face partition 5b; discharging the air in the cabin and filling the cabin with water, the building body 3 gradually sinks and is initially inserted into the soil , the cabin body, side partition 8, left end partition, right end partition and soil forming a closed cavity;

3 The structure 3 is pressed into the soil layer: the water in the closed cavity of the lower part of the construction body 3 is discharged, so that a negative pressure is locally formed in the closed cavity. Since the resultant force of the downward direction of the construction body 3 is much larger than the resultant force of the upward movement of the construction body 3, the drainage process In the middle, the building body 3 is gradually pressed into the soil layer under the combined force of the downward force until the set position;

4 The construction body 3 and the construction body 1 penetrate: continue to discharge the water at the junction of the sealed chamber and the box body, and lift the A full-end partition 5a on the left side of the construction body 3 and the B full-end end partition 5b on the right side of the construction body 1, the construction body 3 The construction body 1 is penetrated, and at this time, the construction body 3 becomes a new construction body 1.

5) Repeat steps 2) through 4) until the tunnel construction is completed.

Step 3) In the step of removing the removed body, the removed body 2 can be reused as a new building body 3.

The inverted buckle body has a structure including a cabin body, a side partition 8, a left end partition, a right end partition and a sealing device, and the tank body is installed above the side partition 8, and the left end partition and the right end partition are respectively installed in the cabin body. At both ends, the cabin, the side partition 8, the left end partition and the right end partition are sealed, and the left end partition is equipped with a full-face partition 5a (as shown in FIG. 23 and FIG. 24) and a contoured end partition 6 ( As shown in FIG. 25 and FIG. 26, a B full-face partition 5b is installed in the right end partition, and a set of partition lifting devices are installed on the upper part of the A full-end partition 5a, the B full-end partition 5b, and the contoured end partition 6. The two ends of the box body are further provided with a splicing unit for docking between the boxes, and the splicing unit is provided with a sealing device. When the full end face of the box body is cut off 5, the cabin body, the side partition 8 and the left end The partition and the right end partition together form the box of the inverted buckle.

The side partition 8 is a sheet pile.

The role of the box is to create a construction space for tunnel construction.

The function of the cabin is to increase the buoyancy of the casing by inflation or to increase the gravity of the casing by water injection.

The function of the left end partition is to isolate the water and soil at the rear end of the box.

The function of the right end partition is to isolate the water and soil at the front end of the box.

The function of the partition lifting device is to lift or lower the A full-face partition 5a, B full-end partition 5b and imitation Shaped end face partition 6.

The function of the sealing device is to seal the casing from the casing.

Claims

The I-type sheet pile for tunnel construction is characterized by including a bearing body (4-1), a sheet pile (4-3) and a supporting beam (4-4), wherein the bearing body (4-1) is symmetrically arranged on the supporting beam ( On both sides of 4-4), the sheet pile (4-3) is arranged at the lower end of the load-bearing body (4-1), and the splicing unit is provided at both ends of the I-type sheet pile (4), and the I-type sheet pile (4) and I When the slab pile (4) is spliced, a first filling area (4-8) is formed between the splicing unit and the splicing unit, and the first filling area (4-8) is filled with a filling for stopping water.
The I-type sheet pile for tunnel construction according to claim 1, wherein the I-shaped sheet pile further comprises an auxiliary sheet pile (4-2), and the auxiliary sheet pile (4-2) is mounted on the bearing body (4) The lower end of -1).
The I-type sheet pile for tunnel construction according to claim 2, wherein the I-shaped sheet pile further comprises a traveling rail (4-5) mounted on the top of the load-bearing body (4-1) .
The I-type sheet pile for tunnel construction according to claim 1, characterized in that there are two supporting beams (4-4), and a mounting groove (4-7) between the two supporting beams (4-4). The full-end partition (5) or the contoured end partition (6) can be placed in the mounting groove (4-7).
The I-type sheet pile for tunnel construction according to claim 4, wherein the full-end partition (5) comprises a rectangular body (5-2) and a partition (5-1), wherein the partition (5-1) Mounted in a lower portion of the rectangular body (5-2), the full-end partition (5) and the I-type sheet pile (4) each have a connecting unit at the intersection, and a second filling region is formed between the connecting unit and the connecting unit ( 5-3), the second filling region (5-3) may be filled with a filler for stopping water.
The I-type sheet pile for tunnel construction according to claim 4, wherein the contoured end face partition (6) comprises a partition (6-1) and a rectangular body (6-2), and is partitioned (6-1). The lower part has a contoured edge (6-3) which is in close contact with the two sides and the top of the tunnel, and the contoured end face partition (6) is at the junction with the I-shaped sheet pile (4). Each has a connecting unit, and a second filling region (5-3) is formed between the connecting unit and the connecting unit, and the second filling region (5-3) can be filled with a filler for stopping water.