KR960009270B1 - Culvert structure and the method for making culvert - Google Patents

Abstract

an A-shape the main body(100) having an A-shape upper body(110) having a ceiling slab(111) and wall portion(115) and assembled with an A-shape lower body(130); a B-shape main body(200) having a B-shape upper body(210) assembled with a B-shape lower body(230). The B-shape upper body(210) has a ceiling slab portion(211), side wall portion(215) and central support portion(221) formed in a body, and the B-shape lower body(230) has a bottom slab portion(231), side wall(235) and central support(241) corresponding to the A-shape.

Description

Underground Structure and Construction Method

1 is an exploded perspective view of an underground structure A type main body according to the present invention.

2 is a perspective view of the combination of the A-type body.

Figure 3 is an exploded perspective view of the B-structure underground structure according to the present invention.

4 is a perspective view of the B-shaped body combined.

5 is a perspective view showing a coupling state of both side wall portions of the upper body and both side wall portions of the lower body.

6 is a cross-sectional view taken along the line IV-IV of FIG.

7 is a cross-sectional view taken along line 6 of FIG.

8 is a perspective view showing a coupling state of the intermediate pillar of the B-shaped lower body and the intermediate pillar of the B-type upper body.

9 is a cross-sectional view taken along line X-ray of FIG.

10 is a partially enlarged front view illustrating a process of injecting an adhesive for bonding an A-type body and a B-type body.

Figure 11 is a perspective view showing a combined state of the ceiling slab and the bottom slab of the A-type upper body and the ceiling slab and the bottom slab of the B upper body.

12 is a sectional view taken along the line XII-XII of FIG.

* Explanation of symbols for main parts of the drawings

100: A type main body 110: A type upper body

130: A type lower body 200: B type main body

210: B type upper body 230: B type lower body

111,211: Ceiling slab part 131,231: Floor slab part

115,135,215,235: Both side wall

112,116,132,136,2l2216,232,236: Adhesive injection groove

113,117,133,137,213,217,233,237: welded joint

114,134,214,234: Slab rebar

118, l38,218,238: Wall cast iron 119, l39,219,239: Adhesive inlet

151,152,154,155,251,252,255: Adhesive Blocker

153,156,253,256: Adhesive filling space 221,241: Middle pillar

222,242: welded joint 223,243: column cast iron

301,303,305: Flock 302,304,306: Home

401: hose for injection of adhesive 402: hose for injection of adhesive curing agent

The present invention relates to an underground structure for constructing an underground tunnel, and more particularly, to an underground structure and a construction method which can be quickly and easily constructed by a block construction method without using a formwork, while also improving the quality of the structure. will be.

In the construction of a conventional subway, an underground main line structure was constructed locally at the opening section.

In other words, steel bars are typed into the ground, a protective wall is constructed, excavation is performed, and formwork is installed, and the foundation part, the lower part of the wall, and the upper part of the wall slab are constructed in three steps.

However, in the conventional underground structure construction method, since the construction is underground and enclosed by formwork, the workplace is narrow and dark. Therefore, in the opening section, the reinforced concrete structure of the main body is replaced with the reinforced concrete structure of the main body after finishing the groundwork for 30m. The construction is divided into three stages of the lower and upper wall slabs, which usually takes 45 to 60 days, resulting in long periods of obstacles for ground transportation, resulting in a lot of inconvenience for the citizens, and satisfactory quality of the structure. There was a problem that could not be brought to a state. In particular, since the concrete is poured at the construction site, the curing period of the poured concrete has a great influence on the air extension.

In addition, it was difficult to secure the workforce due to the change of work type, the cleaning of horizontal construction joints was difficult, became a weak point, difficult to manage the supervision of the workplace, and damage to adjacent ground buildings was increased.

Since it is difficult to inspect the ready-mixed concrete (concrete mixture) in the field, it is difficult to confirm the quality of the ready-mixed concrete before placing the concrete, and thus there is a problem in that quality control of the poured structure is difficult.

In addition, in order to solve such a problem, a method of manufacturing and assembling a wall to be used in a straight part of a tunnel of a subway main line has been devised in this case, but in this case, it is difficult to assemble and construct, and it is a large construction that usually becomes 635 × 960 cm. Since it was impossible to carry the car, it was difficult to apply to subway construction.

The object of the present invention is to improve the quality of the structure, and to reduce the number of workers and the air is greatly shortened the underground structure to reduce the inconvenience to the citizens as the time as a obstacle of the ground transportation and It is to provide the construction method.

Hereinafter, the underground structure according to the present invention and its construction method will be described in detail according to the embodiment shown in the accompanying drawings.

1 is an exploded perspective view of an A-type main body of an underground structure according to the present invention, and FIG. 2 is an assembled perspective view of an A-type main body of an underground structure according to the present invention, and FIG. 4 is an exploded perspective view, and FIG. 4 is an assembled perspective view of the B-shaped body of the underground structure according to the present invention.

As shown in the figure, the underground structure according to the present invention comprises an A-type main body 100 installed at a portion without an intermediate pillar in the main line section, and a B-type main body 200 installed at a portion having an intermediate pillar in the division section. do.

The A-type main body 100 has an A-type upper body 110 having a ceiling slab portion 111 and both side wall portions 115, and an A-type lower body having a bottom slab portion 131 and both side wall portions 135. The main body 130, the B-type body 200 is a B-type upper body 210 having a slab portion 211, both side wall portion 215 and the central column portion 221, and the bottom slab portion ( 231 and the B-shaped lower body 230 having both side wall portions 235 and the central column portion 241.

Adhesive injection grooves 112 and 116 are connected to the ceiling slab 111 of the A-type upper body 110 and the cross-sections of both side wall portions 115, and a plurality of front and rear edges of the ceiling slab 110 are formed. Two welding cavities 113 are formed, and the slab reinforcement 114 is exposed to the welding cavities 113, and weld cavities 1 l7 are formed at the inside and outside of the lower ends of the two wall parts 115. The wall cast steel 118 is exposed at 117.

The adhesive injection grooves 112 and 116 are formed with adhesive injection holes 119 and 139 that are opened at corner portions between the ceiling slab 111 and both wall portions 115.

A pair of adhesive blocking members 151 and 152 are attached around the adhesive injection grooves 112 and 116 to form an adhesive filling space 153.

Adhesive injection grooves 132 and 136 are formed at the end surfaces of the bottom slab 131 and both side wall portions 135 of the A-type lower body 130, and a plurality of welding joints are formed at front and rear edges of the bottom slab 131. A 133 is formed, and bottom reinforcing bars 134 protrude from the welding cavities 133, and welding cavities 137 are formed at inner and outer ends of the lower wall portions 135 of the both side wall portions 135, and the welding cavities 137 are formed. The wall cast iron 138 is provided to protrude.

The adhesive injection grooves 132 and 136 are formed with adhesive injection holes 119 and 139 that are opened at edge portions between the bottom slab portion 131 and both side wall portions 135.

Adhesive blocking members 154 and 155 are attached to the adhesive injection grooves 132 and 136 to form an adhesive filling space 156.

End portions of the reinforcing bars 114, 118, 134, 138 is preferably formed in a conical shape in order to increase the weld bonding force when welding to connect the adjacent main body (100, 200).

The A-type upper body 110 and the A-type lower body 130 has a plurality of lifting to hook to the hook of the crane when loading on the trailer or when getting off or down to the construction position to transport them Rings 120a, 120b, 140a and 140b are provided.

The B-type body 200 is composed of the B-type upper body 210 and the B-type lower body 230 of the same size as the A-type body 100, except that the central pillars (221, 241) are formed.

That is, the B-type main body 200 has a B-type upper body 210 having a ceiling slab portion 211, both side wall portions 215, and a central column portion 221, a bottom slab portion 231, and both side walls. It is composed of a B-shaped lower body 230 having a portion 235 and a central column 241.

Adhesive injection grooves 212 and 216 are connected to the ceiling slab portion 211 and both side wall portions 215 of the B-shaped upper body 210, and a plurality of welding joints are formed at front and rear edges of the ceiling slab portion 211. A 213 is formed, and the weld cavity 213 is exposed to the slab reinforcing bars 214, and a weld cavity 217 is formed at the inner and outer bottoms of the both side wall portions 215, and the weld cavity 217 is formed on the weld cavity 217. The wall cast steel 218 is exposed.

The adhesive injection grooves 212 and 216 are formed with adhesive injection holes 219 and 239 that are opened at corner portions between the ceiling slab portion 211 and both side wall portions 215.

Adhesive blocking members 251 and 252 are attached to the adhesive injection grooves 212 and 216 to form an adhesive filling space 253.

Adhesive injection grooves 232 and 236 are formed at the end surfaces of the bottom slab 231 and the side wall portions 235 of the B-type lower body 230, and a plurality of welding joints are formed at front and rear edges of the bottom slab 231. A 233 is formed and a bottom reinforcing bar 234 protrudes from the welding cavity 233, and a welding cavity 237 is formed at the inside and outside of the lower end of the both side wall parts 235, and the welding cavity 237 is formed. The wall main reinforcing bars 238 are protruded.

The adhesive injection grooves 232 and 236 are formed with adhesive injection holes 219 and 239 that are opened at edge portions between the bottom slab portion 231 and the side wall portions 235.

Adhesive blocking members 254 and 255 are attached to the adhesive injection grooves 232 and 236 to form an adhesive filling space 256.

The ends of each of the reinforcing bars 214, 218, 234, and 238 may be formed in a conical shape in order to increase the welding engagement force when butt welding the adjacent main bodies 100, 200 to each other.

The central pillar 221 of the B-shaped upper body 210 extends downward from the center of the ceiling slab portion 211, and the central pillar 241 of the B-shaped lower body 230 is the bottom slab portion ( 231 extends upward from the center.

Welded joints 222 and 242 are formed on both sides of the lower ends of the central pillars 221 and 241 of the B-shaped upper body 210 and the B-shaped lower body 230, and the column-shaped reinforcing bars 223 and 243 are protrudingly installed in the welded joints 222 and 242. It is.

The B-type upper body 210 and the B-type lower body 230 is a plurality of lifting to hook on the hook of the crane when loading on the trailer or when getting off or down to the construction position to transport them Rings 220a, 220b, 240a and 240b are provided.

The grooves 302 surrounding the wall main reinforcing bars 118 and 138 are formed in the welding space parts 117 and 137 formed on both side wall portions 115 of the A-type upper body 110 and both side wall portions 135 of the A-type lower body 130. The formed wall connection plug 301 is inserted into the wall space 217 and 137 formed on both side wall portions 215 of the upper B body 210 and both side wall portions 235 of the A lower body 230. A wall connecting plug 303 having a groove 304 surrounding the main reinforcing bars 218 and 238 is fitted therein, and a welding cavity part 222 and a B type lower body formed in the central column 221 of the B-shaped upper body 210. The welding joint 242 formed in the central column 241 of the 230 is fitted with a column connecting plug 305 is formed with a groove 306 surrounding the column reinforcing bars (223, 243).

Adhesive (B) is filled between the grooves 302, 304 and 306 of the wall connection plugs 301 and 303, the column connection plugs 305, and the main wall reinforcing bars 118, 138, 218 and 238 and the column reinforcing bars 223 and 243.

The adhesive used here uses an epoxy adhesive.

In constructing the underground structure using the A-type body 100 and the B-type body 200 configured as described above, the portion that does not need the central pillar is the A-type body 100, and the portion that requires the central pillar is the B-type. If the body 200 is to be installed, the length of each of the main body (100,200) is formed in the same length as the installation interval of the central column required by the underground structure to form the A-type body 100 and B-type body 200 By alternately arranging, the center column is installed at the portion where the middle column is needed.

The A-type body 100 and the B-type body 200 transported to the construction site is the lifting hook on the hook of the crane by using a crane when there is no bracing on both sides of the pile pile of the site is fixed by the anchor on the back ground 120b, 140a, 140b, and 220a, 220b, 240a, 240b may be moved to a lower position by walking.

On the other hand, if the depth from the ground surface to the floor is so deep that the horizontal support is installed or the perforated plate is installed on the ground surface, the rails are placed on the inner bottom surface of both retaining piles, and the lifting hooks (120a, 120b, 140a, 140b) and 220a, 220b, 240a, 240b may be moved to a lower position while walking.

The rail is fixed on the I beam, and the I beam is installed between the retaining pile and the outer surface of the main structure, the rail spacing is matched with the wheel gap of the rail bogie, and the support beam is installed between the inside of the I beam and the retaining pile of the outer beam. It is fixed so that the interval of the does not change.

In addition, when the ground is soft and the base of the main structure needs to be reinforced, it is better to cast concrete or reinforced concrete on the bottom of the rail support type 1 beam to prevent the rail from sinking.

Rails and I-beams are machined to match their ends. When joining in the longitudinal direction, rails use rail joint plates, and C-shaped members are inserted between the I-beams and bolted together.

The running rail is installed horizontally to facilitate the movement of the front and rear, left and right directions of the electric crane.

The electric crane has a bogie on the rail, and a bogie-shaped frame on the bogie, two beams and two rails are fixed on the bogie, and two hoisting chains are installed, and the hooks of the hoisting chain (120a) , 120b, 140a, 140b), (220a, 220b, 240a, 240b) is lifted up and moved to the installation site, and moved to the center of the electric chain hoist left and right.

The electric motor moving crane is assembled in the construction site and it is convenient to disassemble and take it out after the work is completed.

In case of installing the perforated plate on the ground, designate the main entrance slot in advance, and make the horizontal brace larger than other sections so that there is no problem to run the main body by crane.

As the transport installation of the main body (100,200) proceeds, the rail and the I-beam on the municipal side are demolished and extended in the direction of the aerial photography, leading to the next scheduled ground entrance.

In order to transport the main body (100,200) to a predetermined place and close contact with the main body (100,200), the main body (100,200) is slightly lifted up under both wall portions (l15,135) and (215,235) of the main body (100,200). Pull the tensioner between the lifting rings (120b, 140b), (220b, 240b), and then put down the main body (100,200).

If there is a water pipe or other obstacles already buried between the place where the main body (100,200) is to be installed and the ground surface, it can be constructed by the above method.

In detail, first, in connecting the A-type upper body 110 and the A-type lower body 130 of the A-type main body 100, the A-type lower body 130 is attached to the end of the earthwork process. It is laid down on the floor slab (not shown) which was poured and puts the A-type upper body 110 on the both side wall portions 115 of the A-type lower body 130 so as to coincide therewith.

When the A-type upper body 110 is placed on the A-type lower body 130, the wall cast reinforcing bars 118 and 138 installed at both wall portions 115 and 135 of the A-type upper body 110 and the A-type lower body 130 are The ends of the A-shaped main body 100 are assembled by welding the wall cast irons 118 and 138 to each other.

Since the wall reinforcing bars 118 and 138 are exposed from the welding cavities 117 and 137, welding is not a problem, and since the ends of the wall reinforcing bars 118 and 138 are formed in a conical shape, the welding efficiency can be increased when they are butt-welded.

When welding of the wall reinforcing bars 118 and 138 is completed, the foreign substances such as welding residues are cleaned and the wall connecting plugs 301 are welded to the welding cavity parts 117, 137, 122 and 142 where the wall main reinforcing bars 118 and 138 and the column reinforcing bars 123 and 143 are exposed. Insert the adhesive (B) into the groove 302, so that the plug 301 and the reinforcing bars (118, 138) are bonded in the bonded state.

In injecting the adhesive B into the flaw 302 of the floc 301, formwork is provided on both sides of the flap 301 to fix the floc 301 so as not to be released by the adhesive injection pressure.

When the installation of the A-type main body 100 is completed by combining the A-type upper body 110 and the A-type lower body 130, the B-type lower body of the B-type body 200 on the side of the A-type body 100 Put down the (230) and put the B-type upper body 210 on it to combine these B-type upper and lower body (210,230) to assemble the B-type body 200, and this B-type body 200 ) Is coupled to the A-type body (100).

First, the coupling method of the upper and lower bodies 210 and 230 of the B-type body 200 is the same as the coupling method of the upper and lower bodies 110 and 130 of the A-type body 100, but the coupling of the intermediate pillars 221 and 241 is performed. The process is added.

That is, when the B-shaped upper body 210 is placed on the B-shaped lower body 230, the end portions of the both side walls 215 and 235 of the B-shaped upper and lower bodies 210 and 230 coincide with each other, and the ends of the central pillars 221 and 241 are aligned. The coincidence of the wall reinforcing bars (218,238) and the column reinforcing bars (223,243) are mutually coincident with each other, and the two wall parts (215,235) are connected by butt welding the wall reinforcing bars (218,238) and the column reinforcing bars (223,243). By the B-type upper, lower body (210,230) is connected.

When welding of the main wall reinforcing bars 218 and 238 and the column main reinforcing bars 223 and 243 is completed, the foreign substances such as welding residues are cleaned, and the welding cavity parts 217, 237, 222 and 242 that expose the wall main reinforcing bars 218 and 238 and the column main reinforcing bars 223 and 243 are exposed. The wall connection plugs 303 and 305 are inserted and the adhesive B is injected into the grooves 304 and 306 so that the plugs 303 and 305 and the reinforcing bars 218 and 238 are bonded to each other.

In injecting the adhesive B into the grooves 304 and 306 of the flocs 303 and 305, formwork is provided on the side to fix the flocs 303 and 305 so as not to be separated by the injection pressure of the adhesive B.

In coupling the A-type body 100 and the B-type body 200, first, the ceiling slab of the ceiling slab 111 of the A-type upper body 110 and the ceiling slab of the B-shaped body 210 are installed. The bottom slab portion of the slab reinforcing bar 134 and the B-type lower body 230 installed in the bottom slab portion 131 of the A-type lower body 130, butt welding the installed slab reinforcement 114 of the portion 211. After butt welding the slab reinforcing bar 234 installed in the (231), the adhesive injection grooves 112,212 and the both side wall portion formed in the slab (111,211) of the A-type upper body 110 and B-type upper body 210 Adhesive injection grooves 116 and 216 formed in the 115 and 215, adhesive injection grooves 132 and 232 formed in the bottom portions 131 and 231 of the A type lower body 130 and the B type lower body 230, and formed in both wall portions 115 and 235, respectively. The adhesive injection grooves 136 and 236 inject an adhesive to connect the A-type body 100 and the B-type body 200.

In the adhesive injection, the integrated adhesive may be injected into the adhesive injection holes 119,219 and 139,239 formed at the boundary of each of the adhesive injection grooves 112,212 and 132,232. Since the adhesives may not be injected into the portions 132 and 232 which are far from the adhesive inlets 119 and 219 and the 139 and 239, it is preferable to inject using the adhesive injection hose.

That is, as shown in FIG. 10, the adhesive injection hoses 401 and the adhesive curing agent injection hoses 402 in the adhesive injection grooves 112, 132, 116 and 136 formed in the upper and lower bodies 110 and 130 of the A-type main body 100, respectively. Insert the outer end to the adhesive injection holes 119 and 139, and then inject the adhesive (epoxy) and the adhesive curing agent (epoxy curing agent) from the outer ends of the hoses 401 and 402. The adhesive and the adhesive curing agent are filled in the adhesive injection grooves 112, 132, 116 and 136 and the adhesive filling spaces 152, 154, 156 and 158 from the inner ends of the 401 and 402. When a certain time elapses after the filling is completed, the adhesive (epoxy) is cured to form an A-type body 100 ) And the B-type body 200 is bonded.

On the other hand, when the A-type main body 100 is continuously installed on the side of the B-type body 200, the adhesive injection grooves (212, 232, 216, 236) formed in the upper and lower body (210, 230) of the B-type body 200, respectively Insert the hose 401 and the adhesive curing agent injection hose 402 so that the outer ends thereof are led to the adhesive injection holes 219 and 239, and then the adhesives and the adhesive curing agent are injected from the outer ends of the hoses 401 and 402, respectively. Slowly withdraws the adhesive and the adhesive curing agent from the inner end of the hose (401,402) is filled in the adhesive injection groove (212,232,216,236) and the adhesive filling space (252,254,256,258), and after curing for a certain time is cured to form the A-type body 100 and B The main body 200 is adhesively fixed.

A gap formed between the A-type upper body 110 and the A-type lower body 130, and the gap formed between the B-type upper body 210 and the B-type lower body 230, and the A-type main body 100 and B The gap formed between the mold main bodies 200 is filled with cement mortar.

The welding cavity parts 113, 213, and 133, 233 formed in the ceiling slab parts 111 and 211 and the bottom slab parts 131 and 231 are filled with cement mortar to be flat.

In this way, by continuously arranging and assembling the A-type main body 100 and the B-type main body 200 alternately, an underground structure such as the main line section of the subway is to be constructed.

That is, the tunnels necessary for the subway main line section are constructed by the ceiling slab parts 110 and 211, the side wall parts 135 and 235 and the floor slab parts 131 and 231 of the A-type main body 100 and the B-type main body 200, The pillars are installed at regular intervals by the intermediate pillars 221 and 241 of the main body 200.

As described above, according to the present invention, by installing the formwork in the underground cut-out section, the concrete structure is not built by the ceiling slab, both side wall parts, and the floor slab, but the A-type main body and the B-type prefabricated in the factory. By simply assembling the main body alternately, it is possible to build a standardized underground structure such as the subway main line section, so that the quality of the structure is good, the number of workers can be reduced, and the air is greatly shortened. This shortening will reduce the inconvenience to citizens.

Incidentally, by forming the corner portion between the slab portion and the wall portion of each main body in a curved shape, it can reduce the amount of concrete required and contribute to cost reduction.

The present invention is not limited to the above-described embodiments, and various modifications are possible within the spirit and scope of the present invention, such as modifying the shape of the underground structure as necessary.

Claims (5)

A-shaped upper body 110 in which the ceiling slab portion 111 and both side wall portions 115 are integrally formed, and A-type lower body 130 in which the bottom slab portion 131 and both side wall portions 135 are integrally formed. The B-shaped main body 100 in which the ends of each of the wall parts 115 and 135 are connected to each other, and the ceiling slab part 211, the both wall parts 215, and the central column part 221 are integrally formed. B-type lower body 230 in which the ends of the wall portions 215 and 235 and the center pillars 221 and 241 are connected to the bottom slab portion 231, the side wall portions 235, and the central column portion 241, respectively. It is composed of a B-shaped main body 200 having a), the slab portion (111, 211) of the A-shaped body 100 and the B-shaped body 200, both wall parts (115, 135) (215, 235) characterized in that connected to each other Underground structure. According to claim 1, Adhesive injection grooves (112, 132, 116, 136) in the ceiling slab 111 of the A-type upper body 110 and the bottom slab 131 and both side wall 135 of the A-type lower body 130 Are formed, and welding cavity parts 113 and 133 and slab reinforcing bars 114 and 134 exposed from the welding cavity parts 113 and 133 are installed at front and rear ends of the ceiling slab part 111 and the bottom slab part 131, and both side wall parts 115 and 135 are provided. On the inside and outside of the lower end portion of the welding cavity (117,137) and the wall cast steel reinforcement (118,138) exposed from the welding cavity (117,137) is provided, the ceiling slab portion 211 and the B-type lower body (B-type upper body 210) In the bottom slab portion 231 and the side wall portions 235 of the 230, adhesive filling spaces 253, 256 defined by a pair of adhesive blocking members 251, 252, 254, 255 are provided around the adhesive injection grooves with the adhesive injection grooves 212, 232, 216, 236. The welder is formed at the front and rear ends of the ceiling slab portion 211 and the bottom slab portion 231. Reinforcing bars 213 and 233 and slab reinforcing bars 214 and 234 exposed by the welding joints 213 and 233 are installed, and the wall main reinforcing bars exposed by the welding joints 217 and 237 and the welding joints 217 and 237 on the inside and outside of the lower end portions of both wall parts 215 and 235. (218, 238) are installed, and the welding cavity parts (222, 242) and column cast iron (223, 243) exposed from the welding cavity parts (222, 242) are installed on both sides of the lower ends of the central column (221, 241) of the B-shaped body 200, The wall joint plugs 301 and 303 having the grooves 302 and 304 which surround the main wall reinforcing bars 118 and 218 are fitted into the welding cavity parts 117 and 137 of the wall parts 115 and 135, and the welding joints 222 and 242 of the intermediate pillar parts 221 and 241. Underground structure, characterized in that the column connecting plug 305 is formed with a groove 306 surrounding the pillar reinforcing bars (223, 243) is fitted. A type main body having an A upper body having a ceiling slab portion and a wall portion on both sides, and an A lower body having a bottom slab portion and a wall portion on both sides, a B upper body having a ceiling slab portion and a wall portion on both sides, and a bottom slab portion on both sides Alternately arranging the B-type main body having the B-shaped lower body formed in the wall portion at the underground opening section, and the end portions of both the wall portions of the A-type main body and the B-type upper body, and the both-side wall portions of the A-type lower body and the B-type lower body A method of constructing an underground structure comprising combining the A-type body and the B-type body by combining each other, and combining the ceiling slab portion, the side wall portion, and the floor slab portion of the A-type body and the B-type body. According to claim 3, The A-type main body and A-type lower body welds the wall cast iron exposed in the welding cavity formed on the lower end of the both side wall portion, inserting the wall connecting plug to the welding cavity and then injecting the adhesive to combine, Between the B-type main body and the B-type lower body, the wall cast iron exposed at the welding cavity formed at the lower end of both wall parts is welded, a wall connecting plug is inserted into the welding cavity, and then the adhesive is injected, and the A-type main body and the B are joined together. A construction method for underground structures, comprising joining the ceiling slab portion, the bottom slab portion and both wall portions of the mold body with an adhesive. The adhesive injection groove according to claim 4, wherein an adhesive injection groove is formed in one end surface of the ceiling slab, the bottom slab, and both wall portions of the A-type body and the B-type body adjacent to each other, and around the adhesive injection groove. The adhesive is added by slowly drawing the hose while injecting the adhesive and the adhesive curing agent into the adhesive filling space formed between the adhesive blocking member through the adhesive injection hose and the adhesive curing agent injection hose inserted into the adhesive injection groove. Underground structure construction method characterized in that the filling space is uniformly injected.