KR100909990B1 - Loop structure using steel materials and constructing method thereof - Google Patents

Abstract

A loop structure using steel beams and a construction method thereof are provided to excavate the ground to form a space and connect assembled loop blocks in the underground space, thereby facilitating the construction of loop structure. A loop structure using steel materials comprises a structure part which is made by successively connecting loop blocks, each of which is composed of a hexahedral steel frame and a concrete wall, and installed corresponding to the contour of the structure to be constructed, and a leading end propulsion part(100) which is mounted on the tip end of the structure part to excavate underground. The leading end propulsion part is composed of a propulsion base(110) of rectangular cross-section, a propulsion guide shield(120) which protrudes to the front of the propulsion base to secure a space in front of the propulsion base, and an excavation shield(130) which is installed to move back and forth in front of the propulsion guide shield to excavate underground.

Description

Loop structure and construction method using steel beams {LOOP STRUCTURE USING STEEL MATERIALS AND CONSTRUCTING METHOD THEREOF}

The present invention relates to a roof structure, and more particularly, to secure a space in the ground, and then, assembling the steel frame and forming a concrete wall in this space to construct a roof block, and to repeat the operation to construct a roof structure. The present invention relates to a roof structure and a construction method using steel beams that can transport and construct materials of a roof block without using equipment.

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. To increase the size of the enclosure

If there is a restriction on the traction and the size of the workplace is large, there was a problem that 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 to form a steel pipe loop by sequentially pressing and connecting the steel pipe in the ground to form the structure, 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 about 600 ~ 800mm to the outer surface of the sphere and cast the concrete in the steel pipe to form the 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 ring shape, so as to H-shaped steel in the direction perpendicular to the steel pipe on the bottom and side of the steel pipe loop. Transverse support beams should 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.

In order to solve this problem, the applicant has applied for a number of steel pipe loop structures.

Steel pipe roof structure does not interfere with traffic flow and walking, and it is easy to maintain after completion of construction, and it is possible to construct the structure at the same time as excavation. There is a problem that the settlement occurs due to the gap between the steel pipe and the structure, the reliability of the joint welding of the steel pipe and the internal structure is required separately, and the corrosion of the steel pipe occurs.

In addition, the conventional technology is a method of pushing the ground in the work area when the structure is constructed using a plurality of steel pipes or precast concrete blocks, so the force transmission weakens toward the excavation propulsion portion, so the steel pipes or precast concrete blocks There is also a problem that requires a large force to prevent the gap between them.

In addition, the heavy weight of steel pipes or precast concrete blocks makes it difficult for a small number of workers to transport and construct them, so they use conveying equipment.In addition, the cost of steel pipes or concrete blocks is large, so that the equipment can move. In addition to the large size of the equipment, there is a problem that requires a large amount of power.

The present invention is to solve the above problems, not by the method of pressing the loop block forming the loop structure from the work tool side to secure the space by excavating the ground, the loop block to the construction and work tool side It is an object of the present invention to provide a roof structure and a construction method using a steel beam that is closely connected and easy to work by constructing a loop structure by pressing.

In addition, another object of the present invention is to reduce the size of the loop block and to reduce overall costs by allowing a small number of people to transport and construct the material constituting the roof block.

The roof structure using the steel beam according to the present invention for achieving the object as described above is to be assembled after sequentially excavating 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 structure portion formed by connecting a plurality of loop blocks having a rectangular space therein in series and being propelled in series; It is mounted to the front end of the structure portion includes a front end propulsion to excavate the ground, the roof block is characterized in that consisting of a concrete wall portion formed selectively on the top, bottom, left and right surfaces of the steel frame.

Loop structure construction method using a steel beam according to the present invention, the first step of excavating the ground; A second step of advancing and drilling the excavation shield of the tip propulsion unit; A third step of advancing the excavation induction shield after the second step to form a space behind the excavation induction shield; A fourth step of constructing a roof block by installing a concrete wall part on a selected surface among four, four, four sides of the steel frame after installing the hexagonal steel frame in the space formed by the third step; By repeating the first to fourth steps it is characterized in that the construction of a loop structure of a predetermined length and width.

According to the roof structure and construction method using the steel beam according to the present invention, the ground is secured by excavating the ground, and then the steel frame and concrete wall are constructed in this space to construct a unit loop block, and the roof block is a working tool from the rear. By pressing to the side to close the loop blocks, it is possible to construct the loop blocks without a large force. In other words, unlike the method of connecting the ground block while pushing the roof block (steel pipe, etc.) in the ground, the roof block assembled in the ground is pressurized one by one so that the construction of the roof structure is easy and the air can be shortened and large equipment Does not require

In addition, a series of tasks such as transporting steel beams, assembling them on site, and placing concrete, etc. can be done by manual work, especially by one or a few workers, which can reduce the size of the roof block. It can reduce the cost and make the construction very easy.

Roof block according to the present invention can be used as a stable structure without a separate reinforcing steel frame and concrete composite steel structure can reduce the city park price, the structure for connecting the steel frame and steel frame (connection plate, bolt , Bolts, etc.) is a standard product manufactured at the factory, so the quality is excellent and the work is very easy.

1A and 1B, the roof structure 1 using the steel beam according to the present invention is to be assembled in order to be installed 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, hexahedron A structure part 200 formed by connecting a loop block 210 formed of a shape steel frame 220 and a concrete wall part 230 (shown in FIGS. 5A and 5B) while being sequentially chained; Including the front end propulsion unit 100 is mounted to the front end of the structure portion 200 (actually excavating the ground first, then the roof block 210 of the structure portion 200 is installed sequentially) to excavate the ground. It is composed.

2 and 3, the tip propulsion unit 100, the propulsion base 110 of the rectangular cross section (propulsion base 110 may be made of precast concrete block, steel plate, FRP, etc.), the propulsion base ( Propelled in front of the 110 and slidably coupled back and forth to the front of the propulsion induction shield 120 to secure a space in front of the propulsion base 110, the propelling induction shield 120 is installed to be moved back and forth in front of the excavation underground The excavation shield is made of 130.

The propulsion base 110 is responsible for the foundation of the structure 1 during the initial drilling, the propelling induction shield 120 is slidably coupled.

Propulsion induction shield 120 may be a steel plate in the form of a square frame so as to be slidably coupled back and forth to the periphery of the propulsion base 110 and the roof block 210, the propulsion base 110 and the roof block 210 Moving in front of the provides a space in which the loop block 210 can be installed. According to such a function, the induction shield 120 is movably connected to the propulsion base 110 and the roof block 210, and provides a loop block installation guide 121 and a propulsion shield that provide an installation space of the roof block 210. It is composed of a guide portion 122 for inducing front and rear sliding of the 130. That is, the loop block installation guide 121 has a length that allows the operator to install the loop block 210.

The propulsion induction shield 120 may be moved forward from the propulsion base 110 and the roof block 210 by the first actuator 140 (for example, the hydraulic cylinder), and propel the first actuator 140. The rod 141 is fixed to the shield 120 and supports the rod 141 to the propelling base 110 or the loop block 210, and supports the propelling base 110 or the roof block 210 so as not to be pushed backward. When the propelled base 110 or the roof block 210 is not pushed backward, the propulsion induction base 120 moves forward to form a space in front of the propelled base 110 or the roof block 210.

Excavation shield 130 is made in the form of a rectangular frame is connected to the guide portion 122 of the propulsion induction shield 120 to be moved back and forth.

The excavation shield 130 excavates the ground while advancing by the second actuator 150. The second actuator 150 may be fixed to the excavation shield 130 as a hydraulic cylinder, for example, and the rod 151 may be fixed to the propulsion induction shield 120.

The tip 160 of the excavation shield 130 is provided with a bit 160 for excavation.

Excavation bit 160 may be a way to form a free surface (free surface refers to the empty space on which the ground is excavated) on four sides or three sides (excluding the lower side) similar to the shape of the excavation shield 130 For this purpose, as shown in FIG. 2, the drilling bit 160 is mounted on four sides of the excavation shield 130 having four sides (only shown on three sides except the lower side in the drawing).

The excavation bit 160 is installed to move left and right or up and down along the guide rail 161 installed on the excavation shield 130 to form a free surface of each side.

The structure part 200 includes a plurality of loop blocks 210 sequentially inserted into the ground.

According to the present invention, the loop block 210 is inserted into a space provided by excavation of the tip propulsion unit 100 instead of sequentially moving backwards one by one from the rear (working tool side), and proceeds along the tip propulsion unit 100. Block 210 is configured in such a way that a plurality of steel beams 221 are combined underground.

That is, the steel beams 221 are transported to the space formed by the propulsion induction shield 120 through the propulsion base 110 and the pre-constructed loop block 210 to combine the steel beams 221 to form a steel having a perfect shape. It forms the frame 220.

As shown in FIGS. 4 and 5A and 5B, the roof block 210 has a hexahedral steel frame 220 and a concrete wall portion 230 to facilitate handling (transporting and construction) by minimizing light weight and reducing the volume. It consists of.

The hexahedral steel frame 220 is a skeleton of the roof block 210, and is formed by combining a plurality of steels (angles, beams, etc.) to form a rectangular cross section.

The steel frame 220 is made of a plurality of steel beams 221 are combined to form a hexahedral frame, as shown in Figure 6 so that it is easy to transport to the inside of the propelling induction shield 120 and can be freely constructed therein. That is, instead of transporting the steel frame 220 into the propulsion induction shield 120, the individual steel beams 221 are transported into the propulsion induction shield 120 and then assembled and constructed in the field. Assembly of the steel beams 221 may be made through a bolt or the like.

Concrete wall portion 230 is a surface in contact with the soil of the upper and lower left and right four sides of the steel frame 220, that is, when the steel frame 220 is arranged in the longitudinal direction as shown in Figure 5a, left and right, steel frame 220 as shown in Figure 5b When arranged in the horizontal direction, it is formed in the upper and lower sides.

Of course, the concrete wall portion 230 may be formed on four surfaces of the steel frame 220, but the portion to which the steel frame 220 is connected, there is no risk of ground collapse and the rigidity is high by assembling the steel frame 220 It is desirable to install only where there is a risk of collapse.

The concrete wall 230 may be a precast concrete block or site casting.

In the case of a precast concrete block, a plurality of joints may be used to be fixed to each other and to the steel frame 220 in consideration of workability.

As in Figure 4, in-site pour formula is used to close the finishing plate 240 to set the concrete pouring position. That is, after installing the finishing plate 240 in the steel frame 220, for example, shotcrete (composed of a composition that satisfies the strength of the concrete wall portion 230 and can be quickly formed) to the finishing plate 240 and the concrete wall portion ( 230 may be formed. When shotcrete is sprayed, the shotcrete may be sprayed onto the mesh 241 after the grid-like mesh 241 is installed on the surface of the finishing plate 240 so that the shotcrete does not slip on the surface of the finishing plate 240.

The closing plate 240 may be the same size as one side of the steel frame 220 or may be formed by combining a plurality of sheets.

The fixing method of the closing plate 240 may be a method of fixing to the steel frame 220 using a wire or the like, a method of forming a groove or jaw in the steel beam 221 to be fixed.

The inside of the loop block 210 of such a configuration may be filled or not filled (mortar, crushed stone, etc.).

Loop structure construction method using a steel beam according to the present invention is as follows.

(S10) excavation.

3 is an initial state, in which the drilling bit 160 is driven in the state of FIG. 3 to form a free surface. As shown in FIG. 7A, when the drilling bit 160 is rotated and moved from one side to the other side, a free surface 2 due to excavation is formed in the ground. Since the free surface 2 is in a porous state, the ground 3 inside the free surface 2 can be easily removed by blasting, excavation, or the like.

(S20) excavation

When the ground 3 is removed, the excavation shield 130 is advanced and excavated. Specifically, as shown in FIG. 7B, when hydraulic pressure is applied such that the rod 151 of the second actuator 150 is drawn out while being supported so that the pushing base 110 is not pushed backward, the pushing base 110 is fixed. The excavation shield 130 moves forward with the propulsion induction shield 120 as a support base.

(S30) Secure loop block space

In the state of FIG. 7B, when the rod 141 of the first actuator 140 is supported on the propulsion base 110, the propulsion base 110 is applied when hydraulic pressure is applied to the first actuator 140 so that the rod 141 is drawn out. Propelled induction shield 120 is advanced because it is not pushed backward (see Figure 7c). Accordingly, a space for installing the roof block 210 is secured between the propulsion base 110 and the propulsion induction shield 120. After securing the space through the induction shield 120, the rod 141 is inserted so that the rod 141 of the first actuator 140 does not interfere.

(S40) loop block installation

In order to install the roof block 210 in the space formed between the propulsion induction shield 120 and the propulsion base 110 as shown in FIG. 7C, the worker carries a plurality of steel beams 221 and then the steel beams in the space ( 221 is assembled to each other to form a steel frame (220).

Subsequently, after installing the finishing plate 240 and the mesh 241 on two surfaces of the upper, lower, left, and right sides of the steel frame 220 in contact with the soil, concrete is sprayed to construct the concrete wall 230. 7d).

When the installation of the first loop block 210-1 is completed, the rod 141 of the first actuator 140 is supported on the first loop block 210-1, and then hydraulic pressure is applied to the first loop block 210-1. ) Is pressed close to the pushing base 110 side between the first loop block 210-1 and the pushing base 110.

Thus, the installation of the first loop block 210-1 is completed, and the excavation shield 130 is advanced in the same manner as the excavation process (S10) and the excavation process (S20) described above, and then, the loop block 210. Space is secured (FIG. 7E).

At this time, the loop block 210 space securing process (FIG. 7E) secures space by extending the rod 141 of the first actuator 140 based on the first loop block 210-1.

Next, as shown in FIG. 7F, the second loop block 210-2 is provided in front of the first loop block 210-1. Since the assembly of the second loop block 210-2 is the same as the assembly of the first loop block 210-1 described above, a detailed description thereof will be omitted. When the construction of the second loop block 210-2 is completed, the second loop block 210-2 is completed. The loop block 210-2 is pressed toward the first loop block 210-1 to closely adhere the first and second loop blocks 210-1 and 210-2 to each other.

The first and second loop blocks 210-1 and 210-2 may be pressed to closely contact each other, and the first and second loop blocks 210-1 and 210-2 may be fastened together using clamps or bolts, and groundwater may not penetrate. It is also possible to install packings.

By repeating the above process, a loop block can be provided with a desired length and width to construct a loop structure.

1A and 1B are plan and front views, respectively, of a loop structure using steel beams according to the present invention;

Figure 2 is a perspective view of the tip propulsion portion applied to the loop structure using a steel beam according to the present invention.

Figure 3 is a side view of the tip propulsion portion applied to the loop structure using a steel beam according to the present invention.

Figure 4 is a perspective view of a steel frame applied to the loop structure using a steel beam according to the present invention.

5a and 5b is a front view showing a concrete wall portion applied to the roof structure using the steel beam according to the present invention.

6 is an exploded perspective view of a steel frame applied to the loop structure using a steel beam according to the present invention.

7a to 7f is a loop structure construction process using the steel beam according to the present invention.

<Description of Signs for Main Parts of Drawings>

100: tip propulsion unit, 110: propulsion base

120: excavation induction shield, 130: excavation shield

140,150: Actuator, 160: Excavation Bit

200: structure part, 210: loop block

220: steel frame, 230: concrete wall portion

240: finishing plate, 241: net

Claims (11)

After installing work tools on both sides of the road or obstacle to be traversed, they will be installed after excavating in sequence according to the outline of the structure to be installed, Hexahedral steel frame 220, consisting of a concrete wall portion 230 is selectively formed on the upper, lower, left, and right sides of the steel frame made of a plurality of loop blocks 210 having a rectangular space therein is connected while being connected in series A structure part 200; It is mounted to the front end of the structure portion includes a front end propulsion unit 100 to excavate the ground, The tip propulsion unit, a propulsion base 110 formed of a precast concrete block having a rectangular cross section, a propelling induction shield 120 protruding forward of the propulsion base and slidingly coupled back and forth to secure a space in front of the propulsion base 120. And, the propulsion induction shield is installed to be movable back and forth in front of the excavation shield 130 to excavate the ground, The excavation shield is formed in the form of a rectangular frame so as to be movable back and forth to the periphery of the propulsion induction shield, it is configured to advance back and forth by a second actuator 150 fixed to the propulsion induction shield, The propulsion induction shield is formed in the form of a rectangular frame is coupled to the front and rear sliding around the circumference of the roof block constructed in front of the propulsion base, the first actuator 140 supported by the propulsion base or roof block Loop structure using a steel beam, characterized in that to advance by the) sequentially forming a space for installing the loop block therein. The method of claim 1, wherein the steel frame is a loop structure using a steel beam, characterized in that a plurality of steel beams are resolvably coupled through a fastener. The roof structure according to claim 1 or 2, wherein the concrete wall part is configured by combining precast concrete blocks. The roof structure according to claim 1 or 2, wherein the concrete wall portion is cast in the steel frame in the field. The roof structure using a steel beam according to claim 4, wherein the steel frame is provided with a closing plate 240 for setting a position at which concrete is sprayed. delete delete delete The loop structure as set forth in claim 1, further comprising at least one excavation bit (160) installed at the distal end of the excavation shield to be movable along the excavation shield to excavate the ground. delete A first step of digging the ground after setting the propulsion base 110, the tip induction shield 120 and the excavation shield 130 formed in the excavation position; A second step of advancing and drilling the excavation shield of the tip propulsion unit; A third step of advancing the excavation induction shield after the second step to form a space for installing a roof block in the excavation induction shield; After installing the hexahedral steel frame 220 in the space inside the excavation induction shield formed in the third step by installing the concrete wall portion 230 on the selected surface of the four upper, lower, left, and right sides of the roof block ( A fourth step of constructing 210); Repeating the first to fourth steps to construct a loop structure of a predetermined length and width, In the fourth step, the roof block is installed in the inner space of the excavation induction shield, and then the loop block is pressed to the rear side to closely adhere to the rear roof block constructed before the roof block. Structure construction method.

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