KR102086960B1 - Segment Fastener for Vertical Hole Construction and Vertical Hole Construction Method Using the Same - Google Patents

Abstract

The present invention relates to a segment fixing device for vertical hole construction and a vertical hole construction method using the same. Fixing grooves are formed on inter-block connection portions forming one block segment and stacking portions between block segments. Insert bolts are inserted into blocks so that some of the ends thereof protrude from the inner surfaces of the fixing grooves. Both ends of a fixing device are respectively coupled to the insert bolts disposed facing each other to fix neighboring blocks or block segments to each other. The fixing grooves formed on the inter-block connection portions have a concave groove shape opened to the inner or outer surfaces of the blocks and upper surfaces of the block segments. The fixing grooves formed on the stacking portions between the block segments have a concave groove shape opened to the inside or outside of the wall surfaces of the block segments. The fixing device is coupled to the insert bolts while adjusting the length of the fixing device suitably to an interval between the insert bolts facing each other, thereby preventing separation of coupling portions between the block segments during a vertical hole construction process.

Description

Segment fastener for vertical sphere construction and vertical hole construction method using the same {Segment Fastener for Vertical Hole Construction and Vertical Hole Construction Method Using the Same}

The present invention relates to a segment fixing device for fastening the inter-block coupling portion of the block segment forming the vertical sphere inner wall during the vertical sphere construction and the inter-block coupling portion to be stacked.

More specifically, the fixing groove is formed in the inter-block connecting portion forming one block segment and the inter-segment stacking block, and an insert bolt is inserted into the block so that a part of the end protrudes from the inner surface of the fixing groove 110. Both ends of the fixing device are respectively coupled to the insert bolts which are arranged to face each other so as to fix neighboring blocks or block segments to each other.

At this time, the fixing groove formed in the inter-block connecting portion forms a concave groove shape that is open to the inner or outer surface of the block and the upper surface of the block segment, and the fixing groove formed in the inter-block segment stacking portion is concave opening to the inner or outer side of the block segment wall surface. Segment fixing device for vertical sphere construction to form a groove shape and prevent the detachment of the coupling part between block segments during the vertical sphere construction process by adjusting the length of the fixing device in accordance with the gap between the opposite insert bolts It relates to a vertical sphere construction method.

In general, in order to form construction of underground facilities such as subways and underground tunnels, and to form ventilation openings and emergency passages connected to underground facilities, vertical holes are excavated vertically downward from the ground surface.

In order to shorten the construction period of the vertical sphere and to reduce the construction cost, as shown in FIG. 1, a plurality of arc-shaped blocks are connected to the vertical sphere excavation surface to form a ring-shaped block segment and inserted into the excavated vertical sphere. Top down segment construction has been developed in which excavation and stacking of block segments are repeated while the stacked block segments are formed downward while forming the wall surface of the vertical sphere through the self-weight of the block segment or the pressing force of the indentation apparatus installed at the vertical sphere inlet.

In the vertical sphere construction process according to the top-down segment construction method, a clearance range is formed between the outer wall of the segment block and the vertical hole excavation surface for smooth downward movement of the stacked segment blocks. When the inclination occurs, the engagement surface between the stacked block segments is shifted and contact with the vertical hole excavation surface may occur, which may prevent the downward movement of the block segment or damage the outer wall of the block segment.

In order to solve this problem, in the construction method of the underground concrete vertical structure of the Republic of Korea Patent No. 10-1440423 and the anti-slip coupling device of the Republic of Korea Patent No. 10-1613656, the block is laminated by binding the connection between the block segments with a fixing device A top-down segment vertical sphere structure using a fixing device that can prevent misalignment between segments is proposed.

However, the fixing device for the block segment as described above is composed of inclined bolts or curved bolts to join blocks or block segments that are connected to each other. In case of fastening the connection of the block segments through the inclined bolts or curved bolts, the segment cross section is lost. Due to this, there is a limitation in strengthening the fastening force of the fixing device, and when the external force is applied due to the inclination of the block segment, the load is concentrated on the nut mounting portion inside the block segment, and the breakage of the block is likely to occur.

Particularly, since the curved bolt or the inclined bolt has a fastening direction due to the fixing device entry angle or the curvature radius when the block or the block segment is fastened, the vertical wall thickness of the block segment is formed in order to secure the durability of the fastening device of the block segment. Since only the following depth should be inserted, the position where the fixing device can be fastened is limited to the direction of the corner of each block or each segment connection part, and accordingly, the nut mounting part or the fixing device support part inside the block segment becomes thin and fixed. Block breakage of the device connection can be accelerated.

In addition, the cross-sectional area of the inclined bolts or curved bolts should be limited to a certain size or less in order to ensure block durability at the portion where the curved bolts or the inclined bolts are inserted. The fastening force was lowered because the joining directions between the blocks or the block segments did not coincide with each other.

In addition, in the case of the fixing device to which the ball bolt or the inclined bolt is applied, there is a limit in improving the fastening force of the fastening part of each fastening device, so that the number of fastening devices formed for each block segment is increased to secure the fastening force between the block segments. As the number of fasteners increases, the time for fastening the fasteners increases, which causes the deterioration of workability and delay of construction.

In addition, if the clearance between each block or block segment occurs after the vertical sphere construction process or the construction is completed, the tightening force should be secured by applying a new tension to the fixing device. Difficult to adjust, there was a problem in terms of maintenance, such as water leakage to the block generation portion between the block segments, block block cross-sectional loss occurs.

Republic of Korea Patent Publication No. 10-1440423 (registered on September 4, 2014) Republic of Korea Patent Registration No. 10-1613656 (2016.04.12. Registration)

In an embodiment of the present invention, the connection between the blocks and the block segments is firmly fixed during the construction of the vertical sphere, and the purpose of the present invention is to prevent block segment detachment due to tilting of the block segment and consequently to reduce downward mobility or surface damage of the block segment. .

In an embodiment of the present invention, the coupling portion between the block segments and the fixing device mounting portion are spaced apart from each other by a distance sufficient to ensure durability of the fixing device mounting portion of the block segment, thereby providing a fastening force applied by each fixing device connecting the block segments. To increase the vertical sphere construction by reducing the number of fasteners fastened per block segment through this.

Embodiments of the present invention aim to minimize segment cross-sectional loss and to improve the fastening force between blocks or block segments by matching the fastening direction of the fixing device with the fastening direction of each block or block segment.

In the embodiment of the present invention, by adjusting the interval of the fastening portion of the fixing device, when the clearance between each block or block segment occurs after the vertical sphere construction process or construction is completed by applying a new tension to the fixing device to secure the tightening force, between block segments It is an object of the present invention to improve the maintainability by preventing leakage to the play generating portion or loss of block segment cross section.

According to an exemplary embodiment of the present invention, a ring-shaped block segment formed by connecting a plurality of arc-shaped blocks is inserted into an excavation surface of a ground surface during vertical sphere construction, and a vertical sphere is excavated on the inserted block segment. In the case of a top-down segment vertical sphere construction device in which the stacked block segments are moved downward in the vertical hole excavation direction by their own weight, the interlayer connecting portion forming one block segment and The neighboring block or block segment is coupled to each other by a fixing groove formed in the stacking portion between the block segments, an insert bolt inserted into the block so that a part of the end thereof protrudes from the inner surface of the block segment, and an insert bolt disposed opposite to each other. It consists of a fixing device for fixing, the fixing groove formed in the inter-block connecting portion is Concave grooves open to the inner or outer surface and the block segment upper surface, respectively, and the concave grooves formed in the inter-segment block segments form a concave groove open to the inner or outer side of the vertical block segment wall surface, and coupled to the insert bolt. The fixing device is coupled to the insert bolt by adjusting the length according to the gap of the opposite insert bolt is fastened by a nut, the block and the block segment is fixed to each other.

According to an embodiment of the present invention, the fixing device includes a first connection washer fitted to one side of the insert bolt, a first connection bar connected to the side of the first connection washer, a second connection washer fitted to the other insert bolt, and a second It consists of a second connecting bar connected to the side of the connection washer, and a socket nut coupled to the first and second connection bar, the gap between the first and second connection washer when the socket nut and the socket nut is fastened through the thread formed on the surface of the second connection bar Adjusted.

According to an embodiment of the present invention, at least two fixing pins are formed at the end of the insert bolt inserted into the block, and the fixing pins are formed in a plate shape of a circular or polygonal shape or a rod shape disposed radially.

According to an exemplary embodiment of the present invention, a ring-shaped or arc-shaped fastener having a “├” shaped cross section is inserted between the block segments to be stacked so as to be in contact with the inner side or the outer side of the stack between the inter-segment blocks. It is fixed by the fastening material in two places of the liver insertion part, and the laminated upper and lower block segments are fixed to each other.

According to an embodiment of the present invention, a fixture groove recessed by the thickness of the fixture is formed on the surface of the block segment contacting the fixture.

According to an exemplary embodiment of the present invention, a coupling key groove formed as a concave groove is formed in an upper surface or a lower surface of a block segment, and a coupling key fixed to one block segment is inserted into the coupling key groove to induce in-situ coupling when stacking block segments. do.

According to an embodiment of the present invention, a step is formed on the upper and lower surfaces of the block segment so that the heights of the inner and outer wall segments of the block segment are different from each other, and an index member groove is formed in the joining surface between the block segments.

According to an embodiment of the present invention, the shoe is mounted through a fastening material so that the shoe is directly mounted to the bottom of the block segment or is detachably from the bottom of the back fixture mounted on the bottom of the block segment, and the width of the engaging portion of the shoe is the bottom of the block segment or the width of the back fixture. It is formed more widely.

According to an embodiment of the present invention, a grouting hole for injecting a filler such as mortar into the block segment outer wall is formed in the block.

According to an embodiment of the present invention, the rear fastener is formed in a ring or arc shape having an H-shaped cross section, and grooves are formed on the inner and outer sides of the upper and lower ends of the block segment coupled with the rear fastener, and the grooves are formed to have the thickness of the rear fastener. When combining the segment and the rear fixture prevents the formation of irregularities in the inner and outer surfaces of the rear fixture and the inner and outer surface coupling portion of the block segment.

According to an embodiment of the present invention, the insert bolt to which the block segment fixing device is mounted is spaced apart by a distance sufficient to ensure durability from each block and the inter-segment coupling portion, so that each fixing device connecting the block segments bears the tightening force. There is an effect that can increase.

According to an embodiment of the present invention by forming a fixing groove in the block surface of the site where the fixing device is mounted so that the fixing device does not protrude from the vertical sphere wall surface, to prevent damage to the fixing device during the vertical sphere construction process, Minimizing the formation of the protruding joint from the wall of the fastball has the effect of improving the convenience of facility formation and facility use inside the vertical sphere.

According to an exemplary embodiment of the present invention, the gap between the two ends of the fixing device connected to the insert bolt can be adjusted to prevent the engagement surface clearance between the block segments during the vertical sphere construction or after the construction is completed, thereby generating the clearance. There is an effect that can improve the maintainability by preventing the leakage of leakage or loss of the block segment cross section.

According to an embodiment of the present invention, two or more fixing pins are formed at the end of the insert bolt inserted into the block, thereby strengthening the coupling between the block and the insert bolt, thereby improving the fastening force of the fixing device.

According to an embodiment of the present invention, by fixing the adjacently stacked block segments at two positions through the “├” shaped cross-section fasteners inserted between the stacked block segments, the fastening force between the stacked upper and lower block segments may be improved. It can be effective.

According to an embodiment of the present invention to prevent the uneven surface formed on the wall surface of the vertical sphere through the fixture groove formed in the surface of the block segment, the downward movement of the block segment and the internalization process of the completed vertical sphere can be made more smoothly There is.

According to an embodiment of the present invention, by inducing in-situ coupling in which block segments are stacked during vertical sphere construction, the coupling key groove formed on the mating surface of the block segment and the coupling key inserted into the coupling key groove are used. There is an effect that can be facilitated.

According to an exemplary embodiment of the present invention, the sealing portion of the block segment may be improved through an index member inserted between the stepped surfaces and the coupling surface formed on the upper and lower coupling surfaces of the block segment.

According to an embodiment of the present invention, when the lowermost block segment reaches the bottom of the block during vertical hole construction, the shoe is separated from the shoe to protect the block segment, and the rear fixture is mounted on the bottom of the block segment and the block segment joining process is performed. By repeatedly switching the vertical sphere construction method, there is an effect that can reduce the time and cost required for the excavation of the poor ground and the stacking of block segments.

1 is a view showing the shape of blocks constituting a block segment of one stage stacked in the vertical sphere construction.
Figure 2 is a view showing the position of the fixing groove formed in the block segment and the engaging surface of each block in order to mount the fixing device according to an embodiment of the present invention.
3 and 4 are views showing the position and shape of the fixing device for connecting the blocks or block segments to each other according to an embodiment of the present invention, and the position and shape of the joining key and the joining key groove to guide the joining position when the block segments are stacked Drawing.
5 is a view showing the structure of the fixing device and the mounting process of the fixing device according to an embodiment of the present invention.
6 is a view showing an example of the mounting structure of the binding key and the mounting process of the binding key according to an embodiment of the present invention.
7 is a view showing the mating surface step formation and the index member mounting structure for improving the watertight performance of the block segment according to an embodiment of the present invention.
8 is a view showing a separation structure and the separation process of the shoe according to an embodiment of the present invention.
9 is a view illustrating a rear fixture structure and a downward coupling process for the downward coupling of the block segment according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

It will be described in detail focusing on the parts necessary to understand the operation and action according to the present invention.

In describing the embodiments of the present invention, descriptions of technical contents which are well known in the technical field to which the present invention belongs and are not directly related to the present invention will be omitted.

This is to more clearly communicate without obscure the subject matter of the present invention by omitting unnecessary description.

In addition, in describing the components of the present invention, different reference numerals may be given to components having the same name according to the drawings, and the same reference numerals may be given to different drawings.

However, even in such a case, it does not mean that the corresponding components have different functions according to embodiments, or does not mean that they have the same functions in different embodiments, and the function of each component is not limited thereto. Judgment should be made based on the description of each component in.

In addition, the technical terms used in the present specification should be interpreted as meanings generally understood by those skilled in the art to which the present invention belongs, unless specifically defined otherwise in the present specification, and excessively comprehensive It should not be construed in meaning or in excessively reduced sense.

Also, the singular forms used herein include the plural forms unless the context indicates otherwise.

In the present application, terms such as “consisting of” or “comprising” should not be construed as necessarily including all of the various components or steps described in the specification, and some of the components or some steps It should be construed that it may not be included or may further include additional components or steps.

Looking at the structure of the vertical sphere (1) to which the embodiment of the present invention is applied, as shown in Figure 1, a plurality of arc-shaped block 10 is connected to each other side by side ring (ring) shape Block segment 100 is formed, and in the process of excavating the lower surface of the vertical sphere 1, the block segment 100 is formed by the self-weight of the block segment 100 or the pressing force of the indentation device mounted at the inlet of the vertical sphere 1. ) Is moved downward in the vertical direction (1) excavation direction.

In the process of vertically moving the block segment 100 by the excavation of the vertical sphere 1, the process of additionally stacking the block segment 100 is repeated, thereby forming the outer wall of the vertical sphere 1. According to the vertical fixture construction fastening device is firmly fixed to each other between the coupling portion between the block 10 and the laminated block segment 100, the vertical block (1) is a block segment 100 stacked in the construction process It is prevented that the damage to the outer wall of the vertical sphere (1) or the downward movement of the block segment 100 is not smoothly made by colliding with the excavation surface while being shifted from each other.

Specifically, as shown in FIG. 2, the connection part between the blocks 10 forming one block segment 100 and the connection part are stacked on the block segment 100 to which the fixing device 200 according to the embodiment of the present invention is fastened. The fixing groove 110 is formed in the stacking portion between the block segments 100, and as shown in FIGS. 3 and 4, the end portion of the fixing groove 110 protrudes from the inner surface of the fixing groove 110, as shown in FIGS. 3 and 4. ) Is inserted into the block 10.

The fixing groove 110 formed at the side connection portion between the blocks 10 has a concave groove shape open to the inner or outer edge surface of the block 10 and a concave groove shape open to the upper side edge surface of the block segment 100. The fixing groove 110 formed in the stacking portion between the segments 100 forms a concave groove shape that is open to the inner surface or the outer edge surface of the vertical sphere 1 block segment 100.

At this time, the fixing groove 110 formed in the connecting portion between the blocks 10 to fix each block 10 may form a concave groove shape that is open to the lower side edge surface of the block segment 100, but the block segment having a high weight (100) Because of the substantial difficulty in fastening the fixing device 200 from below the block segment 100, it is preferably formed on the upper side edge surface.

Both ends of the fixing device 200 are coupled to the insert bolt 111 of the fixing groove 110 disposed to face each other in the neighboring block 10 or the block segment 100 coupling part, and then fastened by nuts. The neighboring block 10 or the block segment 100 is fixed to each other, and the fixing device 200 may adjust the length according to the gap of the opposite insert bolts 111.

In addition, as shown in FIG. 5, the fixing device 200 includes a first connection washer 210 fitted to one insert bolt 111 and a second connection washer 220 fitted to the other insert bolt 111. And first and second connection bars 211 and 221 connected to the side surfaces of the first and second connection washers 210 and 220, and socket nuts 230 coupled to the first and second connection bars 211 and 221, respectively.

A thread is formed on the surface of the connection part of the second connection bar 221 to adjust the gap between the first and second connection washers 210 and 220 through the rotation of the socket nut 230 when the socket nut 230 is coupled with the socket nut 230. An extended head portion of the end of the connection bar 211 is fixed to the engaging portion formed inside the socket nut 230, so that the first connection bar 211 is adjusted when the gap is adjusted by the rotation of the socket nut 230. It prevents the socket nut 230 from deviating.

Through the fixing device 200 of the configuration capable of adjusting the gap at both ends, the insert bolt 111 is coupled between each block 10 and the block segment 100 as compared to the application of the inclined bolt or curved bolt according to the conventional method By allowing them to be spaced apart from each other by a sufficient distance to ensure durability, the fastening force that each fastener 200 connecting the block segments 100 can bear, and the number of fasteners fastened for each block segment is reduced. It is possible to improve the vertical sphere construction.

At this time, as shown in Figure 7 the end of the insert bolt 111 inserted into the block 10 is formed in a plate shape of a circular or polygonal, or a fixing pin 112 made of a rod shape radially formed The pins 112 may be formed in two or more rows to increase the coupling force between the block 10 and the pins 112 to further increase the fastening force of the fixing device 200.

In addition, a ring-shaped or arc-shaped fastener 300 is inserted between the block segments 100 to be stacked as shown in FIG. 6 to be in contact with the inner or outer surface of the stacking portion between the block segments 100. ) Has a "├" shaped cross-sectional shape and is fixed by a fastening material at two positions of the side exposed portion of the fastener 300 and the insertion portion between the block segments 100 to fix the stacked upper and lower block segments 100 to each other. .

In this case, the fixture exposed portion 120 to be recessed by the thickness of the fixture 300 or less on the side exposed portion of the block segment 100 in contact with the fixture 300 and the upper or lower or upper and lower surfaces of the block segment 100. ) May be formed, and when the fixture 300 is inserted, a gap is generated in the stacking surface of the block segment 100 or the protrusion 300 is prevented from protruding from the side surface of the block segment 100.

In addition, as shown in FIG. 3 and FIG. 4, a coupling key groove 140 formed as a concave groove is formed in an upper surface or a lower surface of the block segment 100, and the coupling key groove 140 is formed in one block segment 100. The fixed coupling key 400 is inserted, and when the block segment 100 is stacked, the coupling key groove 140 and the coupling key 400 may be fitted to guide the coupling between the fixing grooves 110.

In addition, a step is formed in the lower and upper surfaces of each of the upper and lower block segments 100 to be stacked so that heights in the inner and outer wall directions of the block segment 100 are different from each other, as shown in FIG. One or more rows of index material grooves 140 are formed in the mating surface along a circular or arc shape of the block segment 100, and the index material 141 is inserted into each of the index material grooves 140 to block the block segment 100. Improve liver watertight performance.

Referring to the vertical sphere construction method using the vertical fixture construction device according to the embodiment of the present invention configured as described above are as follows.

First, the ground surface on which the vertical sphere 1 is to be constructed is excavated according to the outer shape of the block segment 100, and then a shoe 20 is inserted (S10), and the shoe 20 is a block segment stacked at the bottom end. Mounted on the lower end of the (100) to prevent the block segment 100 from being damaged by collision with the surface of the vertical sphere (1) when the block segment 100 is moved downwards, the weight and excavation surface of the block segment 100 is stacked It is made of a material such as steel to prevent the shoe 20 from being damaged from an impact or the like acting from the to ensure strength and durability.

When the shoe 20 is installed, the block segment 100 of the first floor is connected and fixed to the upper part of the shoe 20 (S20), and the lowermost block segment 100 coupled to the shoe 20 is fixed to the fixing device 200. The fixing between the blocks 10 constituting the block segment 100 is completed by fastening (S30).

When the fixing between the shoe 20 and the block segment 100 is completed, the bottom of the vertical sphere 1 is excavated, and an additional layer of the block segment 100 is stacked on the block segment 100 (S40). Each block 10 of the block segment 100 stacked on the upper portion and the block segment 100 stacked up and down are fixed to each other through the apparatus 200 (S50).

Then, the block 10 and the block segment through the vertical hole 1 excavation and the block segment 100 further stacking S40 and the fixing device 200 until the depth of the vertical sphere 1 to be constructed are reached ( 100 is repeated between the fixing (S50) (S60).

At this time, when further stacking of the block segment 100 (S40) by matching the position of the fixing groove 110 between the block segments 100 stacked up and down block segment 100 so that the fixing device 200 can be more easily achieved Inserting the coupling key 400 into the coupling key groove 140 formed on the upper surface or the lower surface, and in-situ coupling between the block segments 100 stacked by the coupling between the coupling key groove 140 and the coupling key 400. This is induced.

In addition, coupling the fixing device 200 between adjacently coupled blocks 10 or adjacently stacked block segments 100 may rotate the socket nut 230 to rotate the first and second connection washers as illustrated in FIG. 5. After matching the distance between the insert bolts 111 disposed to face the distance between the 210 and 220, the first and second connection washers 210 and 220 are inserted into the respective insert bolts 111, and then the insert bolts 111 through the nuts. It will be fixed to the fixing device 200 fastened to the).

The socket nut 230 allows the interval between the blocks 10 or the block segments 100 of the fixing device 200 to be adjusted, so that the blocks 10 or the block segments during or after construction of the vertical sphere 1 are constructed. When the gap between the coupling parts (100) is generated, the clamping force can be secured by applying a new tension to the fixing device (200), thereby preventing the occurrence of leakage to the clearance generating part or loss of the cross section of the block segment (100). Will improve.

At this time, by strengthening the coupling force between the block 10 and the insert bolt 111 through the fixing pin 112 formed in the insert bolt 111 of the portion embedded in each block 10, the tensile force on the insert bolt 111 Alternatively, even if shear force is applied, the insert bolt 111 is prevented from being pulled out of the block 10, or the connection between the block 10 and the insert bolt 111 is broken, and the fixing pin 112 is shown in FIG. By forming two or more rows of the coupling force between the block 10 and the insert bolt 111 can be further enhanced.

In addition, when additionally stacking the block segment 100 (S40), the fastener 300 may be inserted between the block segments 100 to be stacked, and a step S41 of fixing with a fastening material may be performed. Due to the characteristics of the block segment 100 having a heavy weight, ribs formed on the side surface of the central part of the fixture 300 are stacked on the lower layer as illustrated in FIG. 6 for smooth insertion of the fixture 300. It is preferable to fasten the inner surface or outer surface of the block segment 100 stacked on the upper layer and the upper side of the fixture 300 fastened to the surface.

At this time, when the block segment 100 and the fastener 300 are fastened through the fastener groove 120 formed on the surface of the block segment 100 in contact with the fastener 300, the lifting of the block segment 100 may occur. It prevents to improve the waterproof performance of the finished vertical sphere (1) wall surface, and prevent the fixture 300 from protruding from the side wall of the block segment 100, the downward movement of the block segment 100 by the protruding fixture 300 And it prevents the occurrence of obstacles in the installation process inside the vertical sphere (1) completed construction.

In addition, when the block segment 100 is additionally stacked (S40), a step is formed on the upper and lower surfaces of the block segment 100 to be stacked to increase the area of the coupling surface between the block segments 100 so that groundwater or the like is a vertical sphere. (1) It is possible to delay the penetration into the wall surface, and the watertightness performance between the block segments 100 is obtained by the water repellent material 141 inserted into the water receptacle groove 140 formed on the joining surface between the block segments 100. Can be improved.

In addition, the depth of the vertical sphere (1) to be constructed during the process (S60) of repeating the further stacking of the block segment 100 and fixing between the block 10 and the block segment 100 through the fixing device 200 When the shoe 20 reaches the defective ground in a state where it is not reached, the block segment 100 stacked by the self-weight of the stacked block segment 100 or an external force by an indenter mounted at the inlet of the vertical sphere 1 is applied. Will no longer move downward.

When the shoe 20 reaches the defective ground, the construction of the vertical sphere 1 cannot proceed in the downward direction of the block segment 100. Therefore, as shown in FIG. 8, the shoe 20 is removed from the block segment 100 of the lowermost part. After separating, connecting the new block segment 100 from the bottom of the block segment 100 with the excavation of the vertical sphere (1), and then repeats the process of connecting the coupling between the block segments 100 with a fastener 100 The construction method is switched to the construction method of the vertical sphere (1) according to the underpin assembly connection method of the).

In the underpin assembly connection method, the grouting construction is performed on the outer wall of the stacked block segment 100 to fix the block segment 100 inside the vertical sphere 1 (S70), and the shoe 20 is separated and dismantled ( S80), and then performs the operation (S90) to excavate and reinforce the poor ground.

In this case, as shown in FIG. 9, a filler such as mortar may be easily injected into the outer wall of the block segment 100 through the grouting hole 150 formed in the block 10 of the block segment 100.

In addition, the lowermost block segment 100 and the shoe 20 are connected to each other through the rear fastener 500 as shown in FIG. 8, or the block segment 100 and the shoe 20 without the rear fastener 500. Can be directly connected, the coupling or separation between the block segment 100 and the rear fixture 500 through the fasteners such as insert nuts and bolts formed in the block segment 100, between the block segment 100 and the shoe 20 May result in bonding or dissociation.

At this time, the width of the coupling portion of the shoe 20 is wider than the width of the lowermost end of the block segment 100 or the rear fixing sphere 500, so that the block segment 100 or the downward movement of the block segment 100 by excavation of the vertical sphere 1 Damage to the back fixture 500 can be prevented.

When the excavation and reinforcement of the poor ground (S90) is completed, the block segment 100 is further coupled to the lower portion of the block segment 100 positioned at the bottom through the rear fastener 500 (S100), and the further combined block segment ( After the fastening device 200 is fastened to 100, the grouting construction is performed on the outer walls of the block segment 100 and the rear fastener 500 further coupled to fix the block segment 100 to the vertical sphere 1. (S110).

Then, by repeating the ground excavation and reinforcement, back fixture 500 mounting, block segment 100 coupling, grouting construction process until the vertical sphere (1) design depth is reached (S120), of the present invention Construction of the vertical sphere using the segment fixing device for the vertical sphere construction according to the embodiment is completed.

At this time, the rear fastener 500 is formed in a ring or arc shape having an H-shaped cross-section, as shown in Figure 9, the upper and lower end inner and outer sides of the block segment 100 coupled to the rear fastener 500 The groove is formed by the thickness of the fixture 500, the upper and lower ends of the block segment 100 is inserted into the inner surface of the rear fixture 500 when the block segment 100 and the rear fixture 500 is connected to the rear fixture 500 It is possible to prevent the formation of concavities and convexities of the inner and outer surfaces of the block segment 100 and the inner and outer surfaces.

As described above, when the lowermost block segment 100 reaches the defective ground during the construction of the vertical sphere 1, the shoe mounted on the lowermost block segment 100 is separated, and the block segment 100 is opened through the rear fastener 500. By easily converting the construction method of the vertical sphere (1) to the newly connected underpin assembly connection method, it is possible to reduce the time and cost required for excavation of the poor ground and stacking the block segment (100).

Although embodiments of the present invention have been described with reference to the above contents, those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features.

Therefore, the above-described embodiments are to be understood in all respects as illustrative and not restrictive, and the scope of the present invention described in the above detailed description is represented by the following claims, and the meanings of the claims and All changes or modifications derived from the scope and equivalent concepts thereof should be construed as being included in the scope of the present invention.

1: vertical sphere 10: block
20: shoe 100: block segment
110: fixing groove 111: insert bolt
112: fixing pin 120: fixture groove
130: bonding key groove 140: index material groove
141: Index material 150: grouting hole
200: fixing device 210: first connection washer
211: first connecting bar 220: second connecting washer
221: second connecting bar 230: socket nut
300: fixture 400: binding key

Claims (15)

When the vertical sphere 1 is constructed, a ring-shaped block segment 100 formed by connecting a plurality of arc-shaped blocks 10 is inserted into an excavation surface of the ground surface, and an upper portion of the inserted block segment 100 is inserted. When further stacking the block segment 100 by the excavated depth of the vertical sphere (1), the stacked block segment 100 moves downward in the excavation direction of the vertical sphere (1) by the force of its own weight, etc. In the construction segment fixing device,
Fixing groove 110 formed in the connecting portion between the blocks 10 forming one block segment 100 and the stacking portion between the block segments 100 to be stacked, and a block so that a portion of the end protrudes from the inner surface of the fixing groove 110 10) a fixing device 200 which is coupled to the insert bolt 111 inserted therein and the insert bolt 111 having opposite ends thereof fixed to each other to fix the neighboring block 10 or the block segment 100 to each other. Consisting of,
The fixing groove 110 formed at the connection portion between the blocks 10 forms a concave groove shape that is open to the inner or outer surface of the block 10 and the upper surface of the block segment 100, respectively, and is formed in the stacking portion between the block segments 100. The fixing groove 110 has a concave groove shape which is open to the inside or the outside of the vertical sphere 1 block segment 100, and the fixing device 200 coupled to the insert bolt 111 is opposed to the insert bolt 111. By adjusting the length according to the interval of the coupling to the insert bolt 111 and then fastened by a nut, the block 10 and the block segment 100 is fixed to each other,
The fixing device 200 includes a first connection washer 210 fitted to one side of the insert bolt 111, a first connection bar 211 connected to the side of the first connection washer 210, and another insert bolt 111. The second connection washer 220 is inserted into the second connection, the second connection bar 221 connected to the side of the second connection washer 220, and the socket nut 230 coupled to the first and second connection bars (211,221) Although consisting of, through the screw thread formed on the surface of the second connecting bar 221 is fixed to the vertical sphere construction segment, characterized in that the gap between the first and second connection washers (210, 220) is adjusted when fastening with the socket nut (230) Device. delete The method of claim 1,
Two or more fixing pins 112 are formed at the end of the insert bolt 111 inserted into the block 10, and the fixing pins 112 are formed in a plate shape of a circular or polygonal shape, or a rod shape disposed radially. Segment fixing device for vertical sphere construction, characterized in that consisting of. The method of claim 1,
Between the block segments 100 to be stacked, a ring-shaped or arc-shaped fastener 300 having a “├” shaped cross section is inserted to contact the inner side or the outer side of the stacking portion between the block segments 100, and the side surface of the fixture 300. Segment fixing device for vertical sphere construction, characterized in that the fixed upper and lower block segments (100) are fixed to each other by a fastening material at two places between the exposed portion and the insert between the block segment (100). The method of claim 4, wherein
The surface of the block segment 100 in contact with the fixture 300, the fixture fixture for vertical fixture construction, characterized in that the fixture groove 120 is formed recessed by the thickness of the fixture 300. The method of claim 1,
A coupling key groove 140 formed of a concave groove is formed in an upper surface or a lower surface of the block segment 100, and a coupling key 400 fixed to one block segment 100 is inserted into the coupling key groove 140. Segment fixing device for vertical sphere construction, characterized in that the induction of in-situ coupling when the block segment 100 is stacked. The method of claim 1,
Steps are formed on the upper and lower surfaces of the block segment 100 so that the heights of the inner and outer wall directions of the block segment 100 are different from each other, and the index member in which the index member 141 is inserted into the coupling surface between the block segments 100. Segment fixing device for vertical sphere construction, characterized in that the groove 140 is formed. When the vertical sphere 1 is constructed, a ring-shaped block segment 100 formed by connecting a plurality of arc-shaped blocks 10 is inserted into an excavation surface of the ground surface, and an upper portion of the inserted block segment 100 is inserted. Further stacking the block segment 100 by the excavated depth of the vertical sphere (1) to, and fixing the block 10 and the block segment 100 with each other through the segment fixing device, the stacked block segment 100 is self-weight In the vertical sphere construction method of moving downward in the vertical sphere (1) excavation direction by the force of the back,
Inserting a shoe 20 after excavating the ground surface (S10);
Connecting the block segment 100 of the first layer to the upper portion of the shoe 20 (S20);
Fixing each block 10 of the block segment 100 with the fixing device 200 (S30);
Digging the bottom surface of the vertical sphere (1) and further stacking the block segments 100 (S40);
Fixing each block 10 and the vertically stacked block segments 100 with the fixing device 200 (S50);
Block 10 and block segment 100 through vertical stack 1 excavation and further block segment 100 stacking S40 and fixing device 200 until the depth of the vertical sphere 1 to be constructed is reached. Repeating the liver fixation (S50) (S60);
Wherein, the fixing groove 110 formed in the connection between the block 10 and the stack between the block segment 100 of the block segment 100 is the upper surface of the stack between the block segments 100 and the stacked block segment 100 ) To form a concave groove shape that is opened to the inside or the outside of the wall surface, the end portion of the insert bolt 111 is inserted into the block 10 so as to protrude from the inner surface of the fixing groove 110, the block through the fixing device 200 When the 10 and the block segment 100 are fixed, the first and second connection washers 210 and 220 are fitted to the insert bolts 111 disposed to face each other, and then the first and second connection washers 210 and 220 are connected to each other. Fastening is made between the block 10 and the block segment 100 by the socket nut 230,
Further stacking of the block segment 100 and the process of repeating the fixing between the block 10 and the block segment 100 through the fixing device 200 (S60) during the self-weight of the block segment 100 or the external force by the indenter When the stacked block segments 100 reach the defective ground which cannot be lowered,
Performing grouting construction on the outer wall of the completed stacked block segments 100 (S70);
Separating and removing the shoe 20 (S80);
Digging and reinforcing the poor ground (S90);
Coupling the block segment 100 to the bottom end of the block segment 100 through the rear fastener 500 and fastening the fixing device 200 (S100);
Performing a grouting construction on an outer wall of the rear fixture 500 and the block segment 100 (S110);
Repeating the ground excavation and reinforcement, mounting the back fixture 500, coupling the block segment 100, and grouting construction process until the vertical sphere 1 reaches the design depth (S120);
Vertical sphere construction method using a segment fixing device for vertical sphere construction, characterized in that consisting of. The method of claim 8,
In the process of further stacking the block segment 100 (S40), a process (S41) of inserting the fastener 300 between the stacked block segments 100 and fixing the fastener is added, and the fastener 300 is “ A ring-shaped or arc-shaped fastener 300 having a cross-sectional shape of “├” is inserted into contact with the inner side or the outer side of the stack between the block segments 100, and inserted between the side exposed portions of the fastener 300 and the block segment 100. A vertical sphere construction method using a segment fixing device for vertical sphere construction, characterized in that it is fixed by a fastening material in two places. The method of claim 8,
In the process of further stacking the block segment 100 (S40), a coupling key groove 140 formed of a concave groove is formed on the upper or lower surface of the block segment 100 to be stacked, and the coupling key groove 140 has one side. A vertical sphere construction method using a vertical fixture construction segment fixing device, characterized in that the coupling key 400 fixed to the block segment 100 is inserted, so that the fixed position coupling is induced when the block segments 100 are stacked. The method of claim 8,
Steps are formed on the upper and lower surfaces of the block segment 100 to be stacked in the process of stacking the block segment 100 in step S40 such that heights of the inner and outer wall directions of the block segment 100 are different from each other. Vertical sphere construction method using a segment fixing device for vertical sphere construction, characterized in that the index member groove 140 is inserted into the coupling surface between the (100). delete The method of claim 8,
The shoe 20 is directly mounted to the lower end of the block segment 100 or mounted through the fastening material so as to be detachable to the lower part of the back fixture 500 mounted on the lower end of the block segment 100, the width of the coupling portion of the shoe 20. The vertical segment construction method using a segment fixing device for the vertical sphere construction, characterized in that the block segment 100 is formed wider than the bottom end or the rear fixture 500. The method of claim 8,
Block 10 is a vertical sphere construction method using a segment fixing device for vertical sphere construction, characterized in that the grouting hole 150 for injecting fillers such as mortar into the outer wall of the block segment 100 is formed. The method of claim 8,
The rear fastener 500 is formed in a ring or arc shape having an H-shaped cross section, and has grooves corresponding to the thickness of the rear fastener 500 on inner and outer ends of upper and lower ends of the block segment 100 coupled to the rear fastener 500. Is formed, the vertical sphere construction, characterized in that when the block segment 100 and the rear fastener 500 is coupled to prevent the formation of irregularities in the inner and outer surface of the rear fastener 500 and the inner and outer surface coupling portion of the block segment 100 Construction method of vertical sphere using segment fixing device.

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