KR20090122061A - Apparatus for guiding the driving force of steel pipe loop structure - Google Patents

Abstract

PURPOSE: A propulsion guide apparatus of a steel-pipe roof structure is provided to guide a drilling bit propelling the steel-pipe roof structure to advance in the specified direction. CONSTITUTION: A propulsion guide apparatus(10) of a steel-pipe roof structure, in which a rear propelling steel pipe(3) is installed in a front propelling steel pipe(1) with a longitudinal cut portion, increases the support area to the front propelling steel pipe and therefore propels the rear propelling steel pipe along the front propelling steel pipe without deviation. The guide apparatus is in contact with the interior of the front propelling steel pipe and keeps a drilling bit(2) from deviating the propulsion route of the front propelling steel pipe.

Description

Propulsion guide device for steel pipe loop structure {APPARATUS FOR GUIDING THE DRIVING FORCE OF STEEL PIPE LOOP STRUCTURE}

The present invention relates to a propulsion guide device for a steel pipe loop structure, and more particularly, when the excavation bit of the excavator rotates in one direction to excavate the steel pipe loop structure in the arm section, the excavation bit and the post-propulsion steel pipe of the excavation bit It relates to a propulsion guide device of a steel pipe loop structure to prevent the departure due to the driving so that the post-propelled steel pipe is connected in line with the line propulsion steel pipe.

In general, there is a structure construction method by the attachment and non-attachment in a way to build the structure in the ground.

If it is necessary to install sewage rocks, underground roadways, tunnel structures, etc. across existing roads and railroads, it is difficult to transfer obstacles due to construction, or it is impossible to fix them due to obstacles and obstacles in vehicle communication. In the non-adhesive structure construction method, the forward base and the arrival base of the working tool concept are essential on both sides of the crossing road and the stored object, and the representative non-adhesive underground structure construction method includes the pull dog artificial method and the steel pipe loop method. Can be mentioned.

In the case of the ship prosthesis method, the steel pipes for supporting the housing of about 600mm in advance are horizontally press-fitted in the direction of the reach base from the forward base, and then cross the ground from the reach base on the opposite side of the ship to be towed. After binding the PC steel wire to the ship manufactured in the field, it is towed to remove the internal soil in the box, and the same towing and excavation work is repeated to install the structure in the ground.

However, this method may cause settlement of roads or obstacles on the upper part of the enclosure due to the propulsion load of the enclosure or the gap between the propulsion enclosure and the temporary steel pipe installed in the underground. Therefore, when the size of the enclosure increases, the traction is restricted and the size of the workplace is large, so it is difficult to work in a deep underground space.

In addition, if the connection between the enclosures is insufficient treatment, there was a risk of leakage, etc. Due to the drawbacks of the hull prosthesis method, the steel pipe loop method is applied as a non-removable underground structure construction method.

Conventional steel pipe loop method is to form a steel pipe loop by sequentially pressing and connecting the steel pipe in the ground in which the structure is to be formed, to remove all the internal soil inside the steel pipe loop, and to build the structure, the top or side generated during excavation The load is supported by temporary materials such as lateral support beams and temporary columns.

Briefly describing the construction process of the steel pipe loop, considering the size of the sphere to be constructed at the forward base, horizontally press-fit the temporary steel pipe of 600 ~ 800mm to the outer surface of the sphere and cast concrete in the steel pipe to form a steel pipe loop.

From the forward base, the inside of the steel pipe loop will be excavated, and the excavation is carried out step by step from the upper part of the steel pipe loop in consideration of the safety of the upper load and the side pressure.

At this time, the excavation is primarily to excavate the bottom of the steel pipe loop with a depth of about 3m, since the steel pipe and the steel pipe used in the steel pipe loop are connected in a simple loop shape, H-shaped steel in the direction perpendicular to the steel pipe on the bottom and side of the steel pipe loop Furnace transverse support beams are to be installed and supported by a number of temporary columns to support the load over the entire section.

In other words, the existing steel pipe loop is constructed by connecting the pre-indented steel pipes in an annular connection structure with a pair of L-shaped rings and T-shaped clasps attached to the central part of the steel pipe to bear the load, rather than bearing the load. It is just a concept to prevent deviations.

Therefore, there is a problem that can not secure the lateral rigidity between the connecting portion of the steel pipe loop. The lateral support beam and a larger number of temporary columns have to be installed, and the structure has to be installed to be spaced apart as much as the support beam.

After digging into the 2nd and 3rd phases, the installation pillars are carefully extended downward to complete the excavation of the earth and sand to the installation depth of the structure. Finally, the reinforcing bars and formwork for the upper slabs, walls, and lower slabs are finished. Install and pour concrete to complete the structure of underground construction.

The conventional steel pipe loop method constructed as above is highly susceptible to settlement during construction due to the problem of installing the installed temporary pillar downwardly to the installation depth after excavation, and the air is inferior to the existing installed temporary material. Of course, there was a problem that it takes a lot of construction costs.

Therefore, in order to solve the above problems, it is possible to install by installing only temporary pillars without installing a transverse support beam regardless of the scale or depth of underground construction work when constructing underground constructions using steel pipe loops. A steel pipe loop structure has been proposed.

The structure constructed by the non-adhesive steel pipe loop structure also has upper and lower slabs and wall portions under the steel pipe loop structure as in the conventional method described above.

However, the steel pipe loop structure does not have a transverse support to withstand the upper load.

The reason is that the steel pipe structure applied to the steel pipe loop structure has flanges and clasps attached to both sides, and the flanges of the steel pipes and the clasps of the steel pipes in contact with the steel pipes are fitted together, and then the steel pipes This is because the concrete and the load pressure space formed by the flange and the clasp steel plate are filled with concrete to increase the load capacity.

In other words, when the steel pipes are continuously connected to each other as described above, a space forcibly closed by the flange and the clasp steel plate is formed.

Of course, by filling the mortar or concrete into the closed space formed by the interior of the steel pipe and the connecting device such as the flange and the clasp of the steel pipe, an integrated transverse continuous temporary loop structure that can better support the upper soil load is formed. Bars and transverse support beams installed under the steel pipe loops will be unnecessary.

However, the above-described steel pipe loop structure is filled with concrete or mortar in the closed pressure space formed by the flange and the clasp steel sheet, respectively, so that the steel pipe loop has a lateral rigidity, thereby eliminating the conventional lateral support. However, this is a problem that can not work in reality.

In other words, the inside of the steel pipe forms a separate space from the top and side soils, and the earth and sand existing inside the steel pipe is pushed out and there is no difficulty in filling concrete or mortar (the diameter of the steel pipe can work). Since the closed pressure space formed by the flange and the clasp steel sheet is not a workable space, it is impossible to work out the earth and sand to fill the concrete and mortar.

Therefore, the steel pipe roof has lateral rigidity only at the site where the flange and the clasp steel are connected before curing after filling concrete or mortar into the steel pipe, and this alone does not endure the load of the upper side soil and thus requires a separate transverse support. There is no choice but to.

In addition, even if the lateral stiffness without a separate lateral support, the pressure of the earth and sand is concentrated to the site where the clasp plate of the steel pipe adjacent to the flange of the steel pipe is concentrated, so that the steel pipe loop is aligned in the horizontal direction By not achieving the state, there is a problem that can not be made smooth construction.

Accordingly, the applicant of the present invention connects the neighboring steel pipes to each other due to the above problems, so that the stiffness of the lateral rigidity is secured in the horizontally aligned state, so that there is no separate lateral support. He has been filed as a patent for steel pipe loop structures that enable construction (Patent Application No. 2005-18780).

As described above, the steel pipe loop structure, which has been filed as a patent, is a steel pipe loop structure applied to a steel pipe loop method for constructing a structure in the ground, and is provided on the outline of the structure to be installed after installing work tools on both sides of the road or obstacle to be traversed. In order to be press-fitted in succession, horizontal grooves are formed on one side in a horizontal direction, and a plurality of supports are disposed on the upper and lower sides of the horizontal grooves at predetermined intervals to prevent the horizontal grooves from being distorted according to the load. Is installed, the other side of the horizontal groove is characterized in that the plurality of steel pipes are installed side by side in a state aligned with each other the horizontal groove and the corresponding angle is installed.

In addition, among the steel pipes, the angle of the steel pipe to be press-propelled in the horizontal groove of the press-propelled steel pipe is laterally coupled while slidingly fitted, the angle is formed with a bolting hole, the steel pipes are press-propelled and pushed in the lateral direction In the coupled state, the angle and one side of the support of the steel pipe corresponding to the angle is bolted to each other, the communication grooves are formed at regular intervals between the angles in the steel pipes, the communication grooves of the steel pipes and the horizontal An additional feature of tying steel pipes that are laterally coupled to each other through passages such as reinforcing bars through the grooves is provided.

In addition, the method of constructing the steel pipe loop structure of the above configuration, the first step of pressing and pushing the normal steel pipe first in accordance with the outline of the structure to be installed after installing the work tool on both sides of the road or obstacle to be traversed; A second step of installing a support at a predetermined interval in a vertical direction on one side of the steel pipe; A third step of forming a horizontal groove by cutting one side of the portion where the support is installed in the horizontal direction; A fourth step of installing an angle corresponding to the horizontal groove of the steel pipe on one side of the steel pipe to be press-propelled; The fifth step of continuously engaging the angle of the steel pipe to be push-propelled by slidingly fitting the horizontal groove of the push-driven steel pipe in a lateral direction.

As described above, after propelling the first steel pipe, the steel pipe loop structure is completed by laterally engaging the next steel pipes while continuously sliding the steel pipes, which are pushed through the soil, the rock, and the like. Excavator is installed in the steel pipe is being propelled while crushing soil and rock.

Therefore, the first steel pipe is pushed into the crushed soil or rock inside the steel pipe, and when the first steel pipe is pushed in, the soil and rock grains loaded therein are removed to the outside, and then a support is installed in the horizontal direction. The incision groove may be formed.

By the way, when the support is installed and pushed to combine the other steel pipe to the steel pipe formed in the cut groove in the horizontal direction in the horizontal direction, as shown in Figure 1, when driving the excavation bit (2) of the excavator weak part in the driving characteristics (Line propulsion steel pipe 1 is propelled and already excavated portion (1a)) there is a problem to move (upward when pushing in the longitudinal direction, left or right when pushing in the transverse direction).

In addition, since the drilling bit 2 rotates clockwise, the drilling bit 2 has a directional upward direction, and thus, the rear propulsion steel pipe 3 may not protrude in parallel with the propulsion steel pipe 1.

In order to solve such a problem, there is a propulsion guide device of Patent No. 0070202, which is filed and registered by the present applicant.

According to the propulsion guide apparatus of the applicant's steel pipe loop structure described above, there is an advantage that can prevent the separation of the line propulsion steel pipe and maximize the efficiency of the excavator, but there is a problem that does not exhibit its function in the arm section.

The present invention is to solve the above problems, the propulsion of the steel pipe loop structure to be excavated along the predetermined direction when the excavation bit is excavated while the excavation bit of the excavator rotates in one direction to propel the steel pipe loop structure in the arm section. The purpose is to provide a guide device.

The propulsion guide device for a steel pipe loop structure according to the present invention for achieving the object as described above is to provide a post-propelled steel pipe to the line propulsion steel pipe is press-propelled in the road or obstacle to be traversed, the incision is formed in the longitudinal direction ,

The rear of the propulsion steel pipe is fixed to the front end and is slidably inserted therein through the incision of the propulsion steel pipe so as to be entirely supported on the inner circumferential surface of the propulsion steel pipe when the excavation of the excavation bit inserted into the propulsion steel pipe It is characterized in that the propulsion steel pipe is induced to propel along the line propulsion steel pipe.

According to the propulsion guide device of the steel pipe loop structure according to the present invention, the guide device is slidably coupled to the inside of the line propulsion steel pipe in a state fixed to the post-propelled steel pipe, the excavation bit is driven by the excavation bit during the propulsion of the post-propelled steel pipe By preventing the break-out of the propulsion steel pipe toward the incision or the direction of rotation, the propulsion steel pipe can be propelled side by side with the propulsion steel pipe to prevent the damage of the drilling bit and the pre / post propulsion steel pipe and shorten the air. There is such an effect.

As shown in Figure 2 to 4, the propulsion guide device 10 of the steel pipe loop structure according to the present invention, even if the excavation bit (2) to excavate the ground while increasing the support area with the line propulsion steel pipe (1) After the propulsion steel pipe (3) is to be propelled along the line propulsion steel pipe (1) without twisting, the form is to be supported on the inner circumferential surface of the ship propulsion steel pipe (1) (line propulsion steel pipe (1) After the protruding steel pipe (3) is the same as the state in which the incision (1b is formed) to be inserted) and is formed smaller in size than the line propelling steel pipe (1).

The guide device 10 of such a structure is inscribed inside the line propulsion steel pipe 1 so that when the excavation bit 2 tries to deviate from the propulsion path of the line propulsion steel pipe 1, the guide propulsion steel pipe 1 is supported. After the propulsion steel pipe (3) is made of a length that can hold in place. That is, the length is not limited to a specific value, but may be, for example, 1.8 to 2 m in length to perform the above-described function.

The guide device 10 is coupled to the circumference of the rear propulsion steel pipe 3 so that the rear propulsion steel pipe 3 does not twist or deviate from the path by driving the drilling bit 2 when the rear propulsion steel pipe 3 is propelled. It should be maintained, for this purpose it can be supported on the post-propelled steel pipe (3), for example, through the junction 11 of the same curvature as the periphery of the post-propelled steel pipe (3), there are a number of reinforcement along the longitudinal direction Ribs 12 may be formed.

The guide device 10 may be permanently fixed by welding or the like, but may be used in combination with any post-propelled steel pipe 3 in the field.

For example, as shown in FIG. 5, the guide device 10 extends outwardly on both sides of the support part 13 and the support part 13 supported on the inner circumferential surface of the line propelled steel pipe 1 (shown in FIG. 4), respectively. It may be formed of a fixed portion 14 is fixed to the fastening steel pipe 3 after the fastener.

As shown in Figure 6a and 6b, the guide device 10 may be formed with a protrusion 15 to reduce the friction with the line propulsion steel pipe (1) during sliding while securing a support force with the line propulsion steel pipe (1).

As shown in the drawing, the protrusion 15 may be formed in a band shape and formed at regular intervals along the circumferential direction.

In the previous drawings, the tip portion of the guide device 10 is shown to be coincident with the tip portion of the rear propulsion steel pipe 3, but according to this structure, the drilling bit in front of the rear propulsion steel pipe 3 and the guide device 10. Since the support force of the guide device 10 is generated only at the rear of the excavation bit 2 because the (2) is disposed, to compensate for this, as in FIGS. 7A and 7B, the guide device 10 is the front of the rear propulsion steel pipe 3. The receiving portion 16 is formed to be protruded into and to receive the excavation bit (2) protruding forward of the rear propulsion steel pipe (3) along the way. In other words, the guide device 10 is to generate a bearing force in the front and rear of the drilling bit (2).

The propulsion process by the propulsion guide device of the steel pipe loop structure according to the present invention configured as described above will be described.

An excavator is inserted into the linear propulsion steel pipe 1, and the excavation bit 2 is disposed to protrude forward of the linear propulsion steel pipe 1.

When driving the excavator, the drilling bit 2 is excavated while rotating in one direction (for example clockwise).

As described above, the ground propulsion steel pipe 1 is pushed into the ground while excavating the ground using the excavator.

Pre-propelled steel pipe (1) may be one, but is propelled by connecting a plurality of chains in accordance with the width of the underground structure.

When the propulsion of the linear propulsion steel pipe (1) is completed, the incision 1b is formed in the linear propulsion steel pipe (1).

The incision 1b may be formed after the propulsion of the individual line propulsion steel pipe 1 or may be formed collectively after all the wire propulsion steel pipes 1 have been propelled.

Subsequently, the post-propelled steel pipe 3 is promoted, and the work is as follows.

The guide device 10 fixed to the propulsion steel pipe 3 is inserted into the propulsion steel pipe 1 to mount the propulsion steel pipe 3, and the excavation bit 2 moves forward of the propulsion steel pipe 3. Insert the excavator to the inside of the propulsion steel pipe (3) to protrude.

Excavation bit (2) maintains the outer diameter smaller than the inner diameter of the rear propulsion steel pipe (3) so that no interference occurs when inserted into the rear propulsion steel pipe (3), but after passing through the rear propulsion steel pipe (3) The propulsion of 3) is expanded to an outer diameter larger than the outer diameter of the propulsion steel pipe (3) so as not to interfere with the surrounding rock mass.

In this state, the excavation bit 2 is driven to excavate the propulsion path of the post-propulsion steel pipe 3. In this case, the cutout portion 1b of the line propulsion steel pipe 1 is already excavated to restrain the excavation bit 2. Since there is no force, the drilling bit 2 tries to move to the cutout 1b side of the line propulsion steel pipe 1, and also moves to the right by the rotational direction of the drilling bit 2. That is, the propulsion path deviation of the post-propulsion steel pipe 3 is generated.

However, the guide device 10 is inscribed inside the line propulsion steel pipe 1 and exerts a force against the force to deviate the propulsion path by the excavation bit 2 so that the excavation bit 2 and the post propulsion steel pipe 3 are exposed. Excavation bit (2) can be excavated along a predetermined path so as to prevent the deviation of the path.

1 is a view showing a propulsion process of the steel pipe loop structure according to the prior art.

Figure 2 is a perspective view of the propulsion guide device of the steel pipe loop structure according to the present invention.

Figure 3 is a side view showing the propulsion of the propulsion guide device of the steel pipe loop structure according to the present invention.

Figure 4 is a rear view showing the propulsion of the propulsion guide device of the steel pipe loop structure according to the present invention.

Figure 5 is another exemplary view of the propulsion guide device of the steel pipe loop structure according to the present invention.

6a and 6b is a perspective view and a front view showing another example of the propulsion guide device of the steel pipe loop structure according to the present invention.

7a and 7b is a perspective view and a side view showing another example of the propulsion guide device of the steel pipe loop structure according to the present invention.

<Description of Signs for Main Parts of Drawings>

1: line propulsion steel pipe, 2: drilling bit

3: after propulsion steel pipe, 10: guide device

11 connection part, 12 reinforcement rib

13 support part, 14 fixed part

15: protrusion,

Claims (6)

As a post-propelled steel pipe is installed in a line-propelled steel pipe which is press-fitted to a road or obstacle to be traversed and has an incision formed in the longitudinal direction, The post-propelled steel pipe is fixed to the distal end of the post-propelled steel pipe and slidably inserted therein through the incision of the pre-propelled steel pipe to excavate the excavation bit 2 inserted into the post-propelled steel pipe. In the propulsion guide device of the steel pipe loop structure to guide the propulsion, The propulsion guide device 10 has the same cross-sectional shape as the linear propulsion steel pipe and is formed smaller than the linear propulsion steel pipe so that the propulsion steel pipe is supported by the inner circumferential surface of the linear propulsion steel pipe when the propulsion steel pipe is promoted. A propulsion guide device for a steel pipe loop structure. The method of claim 1, wherein the guide device, protruding in front of the rear propulsion steel pipe is formed in the receiving portion 16, which accommodates the excavation bit protruding in front of the rear propulsion steel pipe is formed to support the front and rear of the drilling bit Propulsion guide device of the steel pipe loop structure, characterized in that. The propulsion guide device according to claim 1 or 2, wherein the guide device is detachably coupled to the rear propulsion steel pipe. 4. The guide device according to claim 3, wherein the guide device includes a support part 13 supported on an inner circumferential surface of the line propulsion steel pipe, and fixed parts 14 extending outwardly on both sides of the support part and fixed to the post-propelled steel pipe. Propulsion guide device of the steel pipe loop structure, characterized in that. The propulsion guide device of a steel pipe loop structure according to claim 4, wherein the guide device has a plurality of reinforcing ribs 12 formed in the longitudinal direction thereof. The propulsion guide device of a steel pipe loop structure according to claim 5, wherein the guide device has a plurality of protrusions (15) contacting the inner circumferential surface of the linear propulsion steel pipe at a periphery thereof.

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