KR100297929B1 - Slip form for excavation molding in vertical tunnel - Google Patents

Abstract

PURPOSE: Provided is a slip form for excavation molding in a vertical tunnel which rises as the vertical tunnel to supply raw concrete into work space for continuous molding work so that it strengthens structural intensity of excavation side. CONSTITUTION: The slip form for excavation molding in the vertical tunnel comprises the parts of: a frame(10) which is placed inside the vertical tunnel and consisted of a steel structure to support the entire structure and secure work space; a jack load(20) which is placed at regular intervals along the circumference direction between the frame and the vertical tunnel and extended into the upper part of a pre-molded excavation side; an operation jack(30) which is placed around the circumference side of the frame to raise the frame; and a molding frame(40) which is placed around the circumference side of the frame to mold raw concrete.

Description

Slip Foam for Forming Perforated Wall of Vertical Tunnel

The present invention relates to a slip foam for forming a perforated wall of a vertical tunnel, which allows to continuously form a perforated wall on the peripheral surface of the vertical tunnel while moving up and down along the excavated vertical tunnel.

In order to protect and stabilize the original ground of vertical tunnels excavated in the ground, it is common practice to form a perforated wall by casting concrete to the required thickness on the peripheral surface of the vertical tunnel.

Previously, when forming the perforated wall of the vertical tunnel, the formwork is assembled and installed in the corresponding work position, the unhardened concrete is poured, and then the formwork is disassembled and reassembled and installed in the next work position, and the unhardened concrete is poured repeatedly. Work process has been carried out.

At this time, since there was not a space inside the excavated vertical tunnel to secure the formwork or to safely carry out the formwork installation, there were many difficulties in assembling and dismantling the formwork. There is a problem that safety accidents frequently occur due to the fall of the worker performing the aerial work in the tunnel.

In order to solve the problems caused by forming the ventilated wall of the vertical tunnel as shown in Figure 1 (a) and 1 (b), a plurality of forming panels (1a) arranged in a cylindrical shape While installing the braces (2) upright on the inner circumferential surface of the forming mold (1) consisting of the two, and install the upper and lower working scaffold (3) (4) so as to protrude horizontally on the upper and lower portions of the braces, the lower work Supporting the mold 1 as a support (5) that is installed in connection with the respective braces (2) by using the footrest (4) as a support point, the fixing support so as to extend vertically from the lower working footrest (4) It is known that the formwork for forming the perforated wall of the vertical tunnel by installing 6) has been developed.

The formwork for forming the perforated wall of the vertical tunnel is fixed to the perforated wall A formed by the upper and lower working scaffoldings 3 and 4 while moving upward as a separate lifting equipment along the excavated vertical tunnel. ) As the anchor bolt, so that the mold 1 can be installed at the work position, so that the mold 1 is repeatedly formed whenever the molding of the perforated wall A of the vertical tunnel is performed at the work position. Reduces the labor and unnecessary labor to be dismantled and reassembled. Also, when the molding frame 1 is installed at the work position or when the unhardened concrete is cast, the assembly is integrated with the molding frame 1 It is true that it has a positive advantage such that the operator can perform the work relatively safely on the upper and lower working scaffold (3) (4).

However, since the formwork for forming the perforated wall of the conventional vertical tunnel is first fixed after the already formed form of the perforated wall is completely cured, the new perforated wall is connected and molded by placing the uncured concrete. When forming the perforated wall, continuous work is not performed, and the construction period is extended, and in particular, cross-sectional defects are generated in which the preformed perforated wall and the newly formed perforated wall are separated from each other, resulting in structural strength of the perforated wall itself. There was a very vulnerable problem.

Second, in order to satisfy the conditions for stable lifting of formwork from the foundation floor of deep vertical tunnels, large cranes, which are unnecessarily large compared to the weight of the formwork, were used as heavy lifting equipments, incurring high cost of equipment. In addition, in consideration of the continuous operation is not performed, the waiting time is relatively increased compared to the working time of lifting heavy equipment, there is a problem that impairs the economical construction cost to bear unnecessary equipment fee.

Third, it is true that the operator restrains the occurrence of safety accidents because the worker relies on the upper and lower working scaffold assembled with the molding frame, but the upper and lower working scaffold narrowly ensures the safety of the worker. There was a problem that caused a safety accident that falls due to lack of guarantee to the worker to fall off.

The present invention is configured to continuously carry out the perforated wall forming operation while moving up and down along the excavated vertical tunnel, first to increase the structural strength of the constructed perforated wall to improve the quality according to the construction of the perforated wall, second Improved working conditions to efficiently perform the wall forming work, and drastically shorten the construction time, and Third, eliminate the use of large heavy lifting equipment, and realize the economical construction by reducing the construction cost. The object is to provide a slip foam for wall forming.

1 (a) is a plan view showing an embodiment of the formwork for forming the perforated wall of the conventional vertical tunnel.

Figure 1 (b) is a partial cross-sectional view showing an embodiment of the formwork for forming the perforated wall of the conventional vertical tunnel.

Figure 2 is a perspective view showing a slip foam for forming a ventilated wall of the vertical tunnel of the present invention.

Figure 3 is a partially cut-away plan view showing a slip foam for forming the perforated wall of the vertical tunnel of the present invention.

Figure 4 is a longitudinal cross-sectional view showing a slip-form for forming a perforated wall of the vertical tunnel of the present invention.

5 is an enlarged cross-sectional view of part “A” of FIG.

6 is an enlarged cross-sectional view of part “B” of FIG.

FIG. 7 is an enlarged cross-sectional view of part “C” of FIG. 4.

8 is a perspective view illustrating main parts of the jack rod of the present invention.

9 (a), 9 (b), 9 (c), 9 (d) is a step-by-step illustration of the process for constructing the perforated wall of the vertical tunnel of the present invention.

* Explanation of symbols for main parts of the drawings

10: frame 11, 12: upper and lower skeleton

11a, 12a: big beams 11b, 12b: small beams

11c, 12c: film beam 11d, 12d: scaffold member

13: vertical column 14: supply hopper

15: chute 16: auxiliary work bench

16a: hanger 17: protective roof

17a: holding rod 17b: holding rod

18: cover plate 19: connecting passage

20: Jack Rod 21: Round Bar

22: coupling groove 23: coupling protrusion

30: working jack 30a: double acting cylinder

30b: Clamp 31: Fixture

32: guide 40: forming mold

41, 42: upper and lower fixing plate 43: forming panel

43a: forming surface 43b: butt rib

43c: assembling holes 44, 45: upper and lower fasteners

The present invention also consists of a steel frame having a diameter size that can be installed with a margin in the excavated vertical tunnel frame 10 to secure the working space while supporting the whole, the frame 10 and the inner periphery of the vertical tunnel The frame 10 to cooperate with the jack rods 20 and jack rods 20 which are vertically erected at regular circumferential intervals between the surfaces and are extended to be exposed to the upper part of the preformed vent hole wall A. Actuating jacks (30) installed around the outer circumferential surface to move the frame up, and installed at a predetermined position around the outer circumferential surface of the frame (10) to form uncured concrete supplied while moving up and moving integrally with the frame When it consists of the shaping | molding die 40, the technical concept is the same as the conventional thing.

However, as shown in FIGS. 2 to 4, the slip tunnel 100 of the vertical tunnel of the vertical tunnel of the present invention is loaded with uncured concrete in the center of the upper frame 11 of the frame 10. The main feature of the technical configuration is that the main hopper 14 is installed and the chute 15 is installed to be rotatable at the lower end of the feed hopper 14 so as to be inclined toward the forming mold 40.

In other words, as shown in FIG. 2, the present invention is formed as a steel frame and formed around the outer circumferential surface of the frame 10 which is moved up by the jack rods 20 and the operating jacks 30 which cooperate with each other. ) And a feed hopper 14 provided with a chute 15 rotatably in the center of the upper frame 11 of the frame 10, and uncured in the working position while moving upward along the excavated vertical tunnel. By supplying concrete smoothly, it is configured to continuously form the perforated wall (A).

Accordingly, the slip-form for forming the perforated wall of the vertical tunnel of the present invention increases the structural strength of the constructed perforated wall by simultaneously constructing the perforated wall A in the vertical tunnel, and at the same time, to form the perforated wall. It improves the work efficiency accordingly, and secondly, it has the advantage of greatly reducing the construction cost by restraining the use of unnecessary heavy lifting equipment as much as possible.

Hereinafter, the detailed description of each component through a specific embodiment of the present invention.

Frame 10 is a structural unit that performs a function to ensure a working space for the worker while supporting the whole is made of a steel frame.

In the embodiment of the present invention, the frame 10 is assembled by arranging the small beams 11b and 12b between the large beams 11a and 12a arranged in a lattice shape with respect to the center thereof, and ends of the large beams 11a and 12a. Circular membrane beams 11c and 12c are installed on the lower edge to form upper and lower skeletons 11 and 12, respectively, and the upper and lower skeletons around the outer circumferential surface of the upper and lower skeletons 11 and 12, respectively. This is illustrated by assembling the vertical pillars 13 which are installed so as to be connected and fixed at a certain interval from each other.

And, by installing the scaffold members (11d, 12d) horizontally on the upper surface of the upper and lower skeletons (11, 12), the upper and lower skeletons (11, 12) can be safely operated by the operator Have a functioning workbench.

In addition, a supply hopper 14 for loading and supplying uncured concrete in the center of the upper frame 11 of the frame 10 is installed, and is rotatably installed at the lower end of the supply hopper 14 to form the mold 40. By installing the chute 15 extending inclined toward the (), it is possible to supply the uncured concrete injected from the outside of the vertical tunnel to the working position.

Here, the lower frame 12 of the frame 10 is installed directly below the auxiliary frame 16, which is fixed as the hangers (16a) fixed to the lower frame and the vertical pillar 13, the forming frame 40 A hydraulic supply device (not shown) for intermittently operating the operation jacks 30 while simultaneously utilizing the workbench for smoothly finishing the perforated wall A of the vertical tunnel formed by It can be used as a space to be installed.

At this time, by installing the connecting passage 19 in which the cover plate 18 is installed so as to be in communication with the auxiliary work platform 16 in the center of the lower frame 12 of the frame 10, the worker on the auxiliary work platform 16 It is desirable to consider to be able to operate the hydraulic supply device while checking the operating state of the operation jacks (30).

In addition, the support rods 17a are installed at equal intervals along the upper edge 11 of the upper frame 11 of the frame 10, and are supported as the support rods 17b mounted on the respective support rods 17a. By providing a dome-shaped protective roof 17, the worker performing the work on the upper skeleton 11 to avoid accidental falling objects, it can be found to prevent the occurrence of safety accidents Put it.

The jack rods 20 allow the operation jacks 30 installed around the outer circumferential surface of the frame 10 to be bound, thereby supporting the vertical load acting by supporting the entire slip foam 100, and at the same time, the operation jacks 30. It is a component that performs a function for guiding them to rise operation.

These jack rods 20 are vertically erected vertically at regular intervals between the frame 10 and the inner circumferential surface of the vertical tunnel, and are installed to be embedded in the preformed perforated wall A, respectively. ) Extends so as to be exposed to the top of the pre-formed perforated wall (A), so that it can be engaged with the operation jacks 30 installed around the outer peripheral surface of the frame (10).

And, the jack rods 20 are to be made of a round bar 21 having a predetermined length, as shown in Figure 8, and the coupling groove 22 is formed in one end of the round bar concave, but the coupling protrusion on the other end The protrusion 23 is formed so that it can be extended by assembling and interconnecting with the operation jacks 30 that operate in a rising manner.

Actuating jacks 30 is a structure that performs the function of moving the mold 40 to the working position along with the frame 10 while lifting the jack rod 20.

These actuating jacks 30 are directed toward the jack rods 20 at the bottom of each fixing steel 31 installed to protrude outward in the middle of the vertical pillars 13 of the frame 10, as shown in FIG. It is installed so as to be oriented, and cooperates with the jack rods 20 that penetrates through the center of the actuating jacks 30 so that the jack rod can be lifted up.

Here, the operation jacks 30 are formed as a double-acting cylinder 30a and clamps 30b installed to be interlocked with the double-acting cylinder upper and lower ends so that the jack rod 20 can be penetrated and separated, so that a separate hydraulic pressure is provided. The conventional hydraulic jack that operates by hydraulic pressure supplied intermittently from the supply device is applied.

In addition, the fixing irons 31 are provided with a guide 32 installed so that the jack rods 20 are inserted through the respective outer ends thereof, and the jacks are subjected to the vertical load by the weight of the slip foam 100. It is desirable to assist the rods 20.

Molding mold 40 is installed around the frame 10 outside to form a perforated wall (A) on the inner surface of the vertical tunnel while moving up integrally with the frame 10 is moved up by the operation jacks (30) A note is a component that performs a function.

The forming mold 40 is installed by winding the upper and lower fixing plates 41 and 42 in a circumference around the lower end of the vertical pillars 13 of the frame 10 as shown in FIGS. 5 and 7. The upper and lower fixing plates 41 and 42 are upper and lower fasteners 44 and 45 which are formed to have a predetermined cross-sectional shape and are formed to be opposed to each other. ) To be detachably installed.

In addition, the forming panels 43 are substantially channel-shaped cross-sectional shapes, forming a narrow forming surface 43a, and protruding to both sides of the forming surface so that the forming ribs 43b are formed at equal intervals. 43a, and abutment ribs 43a of each of the forming panels 43 are welded to each other as upper and lower fasteners 44 and 45 which are fastened through matching assembly holes 43a. do.

Referring to the accompanying drawings, the process of constructing the perforated wall of the vertical tunnel using the slip foam for forming the perforated wall of the vertical tunnel is as follows.

FIG. 9 (a) illustrates a work process for preparing the hollow hole wall A by placing the slip foam 100 in the excavated vertical tunnel.

Slip foam 100 is assembled to the operation jack 30, the mold frame 40 together with the frame 10 on the ground and placed in the bottom of the excavated vertical tunnel, and the operating jack of the slip foam 100 ( By installing the jack rods 20 so as to penetrate through the 30, it is prepared to form the perforated wall (A) while moving up along the vertical tunnel.

At this time, the jack rods 20 installed through the operation jacks 30 are installed to maintain the verticality accurately in the cross-section of the perforated wall (A) to be molded, thereby holding the entire slip foam 100 stably. While supporting, the operation jack 30 is considered to be able to move up smoothly.

FIG. 9 (b) illustrates a work process of forming the perforated wall A by arranging the slip foam 100 placed in the vertical tunnel at the work position and pouring uncured concrete.

This means a working process for forming the first substantially hollow hole A, which is carried out from the bottom of the vertical tunnel.

In this way, when molding the perforated wall (A), the uncured concrete is poured with a margin lower than the upper end of the forming mold 40 of the slip foam 100, so that the slip foam 100 can be moved upward without difficulty. do.

9 (c) and 9 (d) are arranged by moving the slip foam 100 to the next working position before the preformed perforated wall A is completely cured, and the preformed perforated wall A ), And the work process of splicing uncured concrete so that it is integrated with

That is, when the unhardened concrete poured to form the preformed perforated wall A can maintain its own shape, when the operation jacks 30 of the slip foam 100 are temporarily operated, the operation jacks are jack-roded. In cooperation with the (20) is to move up the entire slip foam 100.

At this time, the forming mold 40 of the slip foam 100 is moved upward while sliding in contact with the preformed vent hole wall (A), so that the lower end of the forming mold 40 over the upper part of the cavity hole (A) After positioning, the uncured concrete may be spliced so as to be integral with the preformed multi-hollow wall A.

In this way, by placing uncured concrete, the slip foam 100 is moved upward before the perforated wall A is completely cured, and the work of placing uncured concrete on the preformed perforated wall A is repeatedly performed. In this case, the perforated wall A is continuously formed in the excavated vertical tunnel.

As described above, the present invention is to supply the unhardened concrete to the working position while moving up and down along the vertical tunnel to be carried out to continuously form the perforated wall, the structural strength of the constructed perforated wall At the same time, it is possible to more efficiently perform the perforated wall forming work, and to have a useful effect of reducing the cost of construction by suppressing the use of expensive lifting equipment.

Claims (5)

Frame 10 is made of steel frame having a diameter size that can be installed with a margin in the excavated vertical tunnel to secure the working space while supporting the whole, between the frame 10 and the inner peripheral surface of the vertical tunnel Jack rods 20 which are erected vertically at regular intervals in a circumferential direction and are extended to be exposed to the upper part of the preformed ventilated wall A, and the outer circumferential surface of the frame 10 to cooperate with the jack rods 20 Molding frame (30) is installed to move the frame up and move, and is formed at a predetermined position around the outer peripheral surface of the frame (10) to form the uncured concrete supplied while moving up and moving integrally with the frame ( 40), the supply hopper 14 for loading and supplying uncured concrete in the center of the upper frame 11 of the frame 10, and can be rotated at the lower end of the supply hopper 14 Chakseol bokgong to be transmural for pressing the slip form in the vertical tunnel, it characterized in that the installation hayeoseo the chute (15) extending obliquely towards the forming die (40). According to claim 1, wherein the frame 10 is assembled by placing the small beams (11b, 12b) between the large beams (11a, 12a) arranged in a grid with respect to the center and the ends of the large beams (11a, 12a) Circular membrane beams 11c and 12c are installed on the lower edge to form upper and lower skeletons 11 and 12, respectively, and the upper and lower skeletons around the outer circumferential surface of the upper and lower skeletons 11 and 12, respectively. Slip foam for forming a perforated wall of a vertical tunnel, characterized in that the assembly is made of vertical columns (13) that are installed so as to be fixed at a certain interval from each other. 3. The slip foam for forming a perforated wall of a vertical tunnel according to claim 2, wherein the scaffold members (11d, 12d) are horizontally installed on upper surfaces of the upper and lower skeletons (11) (12). According to claim 1, characterized in that the lower work frame 12 of the frame 10 is installed directly below the auxiliary work platform (16) fixed as hangers (16a) fixed to the lower frame and the vertical pillar (13). Slip foam for perforated wall molding of vertical tunnels. The holding rods 17a are installed at equal intervals along the edge of the upper frame 11 of the frame 10, and the support rods 17b mounted on the respective holding rods 17a. Slip foam for forming the perforated wall of the vertical tunnel, characterized in that it comprises a protective roof (17) is supported as a dome shape installed.