KR102029429B1 - Underground structure construction method with internal joint ring on thrust tube for continuous steel joint structure - Google Patents

Abstract

The present invention provides a construction method for an underground structure. An inscribed insertion inner joint ring is applied to an underground blast tube, and a main blast tube body and a girder loop tube individually have a continuous steel connection structure. The construction method for an underground structure can obtain structural stability under the ground. According to an aspect of the present invention, the construction method for an underground structure includes: a step of removing soil from the main blast tube body; a step of cutting the lower part of the main blast tube body for construction of a vertical wall and performing excavation as deep as a predetermined depth to the lower side through a part which is cut; a step of installing a side blocking plate and an upper blocking plate in a cutting unit of the girder loop tube; a step of arranging reinforcing bars in the girder loop tube and a space excavated to the lower part of the cut part of the girder loop tube and constructing a strut beam by placing the concrete; and a step of arranging the reinforcing bars in the main blast tube body and placing the concrete.

Description

Underground structure construction method with internal joint ring on thrust tube for continuous steel joint structure}

The present invention relates to the construction method of the underground structure, in particular, by applying the internal fitting inner ring to the underground propulsion pipe, the main propulsion pipe and the girder loop pipe each have a continuous steel coupling structure to ensure structural safety in the ground The present invention relates to a construction method of underground structures that can easily change the direction of propulsion to have an arch curve or curvature during construction by adjusting the outer blades for fitting the hinges of the connecting nodes.

The public road facilities or railroad driving facilities that are currently in use effectively establish new connecting passages or underground structures while they are in use without transferring (moving) or discontinuing existing constructions, civil structures, or facilities to expand their urban functions or roles. There is a need for a construction method. The conventionally used open method is used to introduce non-reachable method because it hinders the flow of ground transportation and causes problems such as civil noise caused by construction noise and surrounding settlement. Many of the non-sealing methods currently in use are an improvement on the pipe loop method.

In the pipe loop method, the steel pipe (or propulsion pipe) having a unit length is sequentially pushed into the ground, and the inside of the steel pipe is excavated, and reinforcement and concrete are poured. In this process, when the propulsion of the steel pipe is completed, the connection between the adjacent steel pipes is welded, and this welding has a problem in that the flexural structural performance of the steel pipe cannot be properly exhibited because only the simple joining function of the connection is exerted. Therefore, a construction method that can be a continuous steel coupling structure is required so that expensive steel pipe can exhibit reinforcement ability in underground structures.

As a background technology of the present invention, Korean Patent Registration No. 10-0322844 has been proposed, 'tubular tunnel construction method. This is to install the main steel pipe and the sub-steel pipe, and after the excavation of the space for the pipe and the side wall, the construction of the pipe structure including the process of pouring concrete. In this case, the main steel pipe and the sub-steel pipe are unit steel pipes each having a predetermined length, and overlay welding is performed on the connection surface of the simple butt joint node. The overlay welding between such unit steel pipes has a problem in that the steel pipes cannot be formed as a continuous rigid bonded integral structure, and thus the steel pipes cannot be reflected in the structural strength design in the ground.

Later, the Korean Patent Application No. 10-0794609 (post-application) (underground structure construction method using a filled steel pipe loop and concrete wall) is also proposed to build a loop of underground structures to be constructed by injecting a plurality of steel pipes. . However, in this construction method, butt joint joints between unit steel pipes are only overlay welded, and thus these steel pipes cannot be formed as continuous steel coupling structures, and thus cannot be reflected in structural strength design.

Korea Patent Registration No. 10-0322844 Korea Patent Registration No. 10-0794609

The present invention, by applying the inner inner ring to the underground propulsion pipe, the main propulsion pipe and the girder loop pipe each have a continuous steel coupling structure to ensure the structural safety in the ground, and the hinge joint of the fitting joint In addition, it is an object of the present invention to provide a construction method of underground structures that can easily change the propulsion direction to have an arch curve or curvature during construction by adjusting the outer blade for turning direction.

In the construction method of the underground structure according to the embodiment of the present invention, the main propulsion body is positioned on the left and right sides of the loop of the underground structure to be constructed, and the soil inside the main propulsion body is removed while press-fitting into the ground to be disposed in the longitudinal direction of the underground structure. Making a step; After removing the earth and sand inside the girder loop pipe while pressing a plurality of girder loop pipes into the ground to form an arch or flat space between the left and right main propeller pipes, the lower part is cut from the main propeller pipe for the construction of the vertical wall. Performing excavation downward through the cut portion to a predetermined depth; Assemble the reinforcing bar in the space excavated to the lower part of the left and right main propulsion pipe, install concrete to install vertical wall, extend the lower part of the girder loop to the main propulsion pipe in the transverse direction, and cut it to the bottom of the cut part. Installing the side blocking plate and the upper blocking plate to the incision of the girder pipe after forming the support beam; Reinforcing the reinforcement into the space excavated below the incision portion of the girder pipe and into the interior of the girder pipe, and placing concrete to support the beam; Reinforcing the reinforcement into the interior of the main propulsion pipe and pouring concrete; including, but the girder loop pipe is a second propulsion pipe slot slots are formed at regular intervals around the distal end of the second leading pipe in sequence Indentation is made by fitting, but the inner circumferential surface of each connecting node to which the second propulsion tube is fitted is located at the inner and outer circumferential direction, and the second inner fitting inner ring is formed at an interval for filling at regular intervals. The outer circumferential surface of the connecting node is installed on the outer circumference of the connecting node, and a plurality of outer wings for second turning function is welded and installed at the front end, and after the press fitting of the girder loop pipe is completed, the slot opening groove is filled through the opening for filling joint. It is characterized in that the welding is made.

On the other hand, in the construction method of the underground structure according to another embodiment of the present invention, the earth and sand inside the main propulsion body while pressing the main propulsion body in the ground so as to be placed in the longitudinal direction of the underground structure of the underground structure to be installed in the longitudinal direction of the underground structure Removing; Removing earth and sand inside the girder loop tube while pressing a plurality of girder loop tubes into the ground to form an arch or a flat shape between the left and right main propulsion bodies; Incision extends the lower part of the girder pipe to the main propulsion tube in the transverse direction, performs excavation to the lower part of the incision, and then installs the side blocking plate and the top blocking plate at the incision of the girder pipe Making a step; Reinforcing the reinforcement into the incision portion of the girder loop tube and the inside of the girder loop tube, and placing the support beam by pouring concrete; Cutting the lower part from the left and right main propulsion pipes and drilling a predetermined depth downward through the cut-out portion, then assembling the reinforcing bar in the excavation space and placing concrete to construct the vertical wall; Reinforcing the reinforcement into the interior of the main propulsion pipe and pouring concrete; including, but the girder loop pipe is a second propulsion pipe slot slots are formed at regular intervals around the distal end of the second leading pipe in sequence Indentation is made by fitting, but the inner circumferential surface of each connecting node to which the second propulsion tube is fitted is located at the inner and outer circumferential direction, and the second inner fitting inner ring is formed at an interval for filling at regular intervals. The outer circumferential surface of the connecting node is installed on the outer circumference of the connecting node, and a plurality of outer wings for second turning function is welded and installed at the front end, and after the press fitting of the girder loop pipe is completed, the slot opening groove is filled through the opening for filling joint. It is characterized in that the welding is made.

In addition, when the angle of propulsion direction of the girder pipe is changed, before the welding is made to the slot open groove, the second switching wedge is positioned in the opening portion for the filling of the inner inner ring of the second inner fitting ring, and then the second switching wedge is pushed through the hydraulic jack. Forcibly changing the installation angle of the outer blade for the second direction switching function of the position; characterized in that it further comprises.

In addition, the main propulsion pipe is inserted into the first forward pipe by the first propulsion pipe is formed in the slot periphery at regular intervals around the distal end of the first propulsion pipe in order to have a connection node, the first propulsion pipe is fitted Each connecting node has a first inner fitting inner ring formed with openings for filling joints at predetermined intervals in the circumferential direction, and is welded to the front and rear ends thereof. 1, the outer wing for the turning function is welded to the front end, and after the press-in of the main propulsion pipe is completed, it is characterized in that the filling welding is made in the slot-opening groove through the filling joint opening.

In addition, when the angle of the propulsion direction of the main propulsion body is changed, before the welding is made to the slot open groove, the first switching wedge is positioned in the opening portion for the first inner fitting inner ring, and then the first switching wedge is pushed through the hydraulic jack. Forcibly changing the installation angle of the outer blade for the first direction switching function of the corresponding position; characterized in that it further comprises.

In addition, after the filling welding is made in the slot open groove, the gouging welding is performed around the joint surface of each connecting node of the girder pipe by performing thermal gouging on the second inner fitting inner ring except the filling welding. It features.

In addition, after the filling welding is made in the slot open groove, the gouging welding is performed around the joint surface of each connecting node of the main propulsion tube by performing thermal gouging on the first inner fitting inner ring except the filling welding. It features.

According to the construction method of the underground structure having an internal fitting inner ring is installed in the underground propulsion pipe of the present invention, the inner joint ring and the underground propulsion pipe installed on the joint surface which is the connection node of the underground propulsion pipe At the same time, the welding is carried out through the slot-opening groove formed at the connecting node side, so that the main propulsion pipe and the girder loop pipe each have a continuous steel coupling structure. Therefore, underground structures have increased structural safety in the ground.

In addition, the propulsion direction is changed due to the forceful angle adjustment of the direction change outer blade together with the hinged fitting of the underground propulsion pipe connecting node, which can have arch curve or curvature during construction, and it is easy to introduce propulsion force and improve construction precision. Has the advantage of being.

In addition, the inner inner ring is bonded to the connection node through the filling weld to increase the joint strength can be significantly reduced thickness, thereby effectively reducing the manufacturing cost of the inner inner ring.

The following drawings, which are attached in this specification, illustrate the preferred embodiments of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention. It should not be construed as limited.
Figure 1a is a construction sequence diagram of the built underground structure according to an embodiment of the present invention.
Figure 1b is a construction sequence diagram of the built underground structure according to another embodiment of the present invention.
Figure 2 is an exploded perspective view of the girder loop tube applied to an embodiment of the present invention.
Figure 3 (a), (b) is a state of installation after each press-fit of the main propulsion pipe and the girder loop pipe.
4 is a longitudinal cross-sectional view of each connecting node portion of the main propulsion pipe and the girder loop shown in (a) and (b) of FIG.
5 is an enlarged view of an 'X' part of FIG. 4.
FIG. 6 is a partial cross-sectional view showing a state in which the second inner fitting inner ring is filled and welded in the state of FIG. 5 after completion of the press fitting of the girder loop tube. FIG.
FIG. 7 is a partial cross-sectional view of the gouging welding on the second interdigital inner ring after the fill welding of FIG. 6.
8 is a cross-sectional view taken along line AA of FIG. 7.
9 is a perspective view of an underground structure constructed according to an embodiment of the present invention.
10 is a perspective view in which the conversion wedge is disassembled in the main propulsion tube or girder loop observation node according to an embodiment of the present invention.
Figure 11 is a longitudinal sectional view in the state in which the conversion wedge is additionally installed in the main propulsion tube or girder loop side node portion according to an embodiment of the present invention.
12 is an installation state of the hydraulic jack for operating the switching wedge shown in FIG.
13 is a state in which the outer blade for the first direction switching function or the outer blade for the second direction switching function hinged by the operation of the hydraulic jack in the 'Y' portion of FIG.
14 is an exemplary view showing propulsion of the main propulsion pipe or the girder loop pipe according to the embodiment of the present invention in an arch curve state.
15 is a modified exploded perspective view of the main propulsion tube according to an embodiment of the present invention.
16 is a perspective view of an underground structure constructed by applying the main propulsion pipe shown in FIG. 15.

In the following the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the embodiments presented are exemplary for a clear understanding of the present invention is not limited thereto.

Construction of the underground structure 500 according to the present invention is a step of pressing the left and right main propulsion body (10, 10) in the ground as shown in sequence (a) to (f) of Figure 1a, left and right main To be mutually connected between the propulsion body (10, 10) Press-fitting a plurality of girder pipes 20 into the ground, cutting and cutting the bottom of the left and right main propulsion pipes 10 and 10, perpendicular to the space excavated to the bottom of the left and right main drive pipes 10 and 10 Constructing the wall 40, and in the horizontal direction to install the support beam 150 to the lower portion of the girder loop pipe 20 to install the side blocking plate 210, the cutting of the girder loop pipe 20 Performing reinforcement of the reinforcement into the space excavated into the lower portion of the part and the girder pipe (20), and pouring concrete to construct the support beam (150); Construction is carried out including the step of placing reinforcement and concrete into the interior of the main propulsion body (10).

Here, the girder loop tube 20 may be installed in an arc shape as shown in FIG. 1A or may be installed in a flat shape as shown in FIG. 1B.

Hereinafter, each construction step will be described in detail.

Main Promotion Body Indentation  step

First, as shown in (a) of FIG. 1a, the main propulsion tube 10 is positioned at the left and right sides of the roof of the underground structure 500 to be constructed and press-fitted into the ground to be disposed in the longitudinal direction of the underground structure 500. .

The diameter of the main propulsion tube 10 is configured to be relatively larger than the diameter of the girder pipe 20 to be described later. The main propulsion pipe body 10 is a steel pipe having a unit length is joined by welding in the pushing position is pressed.

Here, when the main propulsion body 10 is press-fitted using a hydraulic jack not shown to obtain a reaction force, the hydraulic jack can be supported by the reaction force (not shown) installed in the rear of the main propulsion body 10 can be operated. Of course, the vertical shaft can be pre-ground from the ground down to install the reaction table.

In this process, the main propulsion body 10 is pressurized per unit length, and then internal excavation is performed to remove the soil.

Girder loop tube Indentation  step

Then, as shown in (b) of FIG. 1a, a plurality of girder loop tubes 20 are press-fitted into the ground to be connected to each other between the left and right main propulsion tubes 10 and 10. In this case, the plurality of girder pipes 20 may be arranged to have an arch shape or may be arranged in a flat shape as shown in FIG.

A hydraulic jack is also used when the girder loop tube 20 is press-fitted, and the hydraulic jack can be supported by a reaction force (not shown) installed at the rear of the girder loop tube 20. The diameter of the girder loop tube 20 is configured to be relatively smaller than the diameter of the main propulsion tube (10).

In this process, the girder loop tube 20 is pressurized per unit length, and then internal excavation is performed to remove the soil.

Here, as shown in FIGS. 2, 4 and 5, the girder loop pipe 20 has a second propulsion pipe 202 having slot opening grooves 202a formed at regular intervals around the distal end of the second lead pipe 201. The fitting is made by fitting sequentially. At this time, as shown in FIG. 5, each connecting node has a second inner inner ring 203 internally bonded to the front and rear ends by welding (F1, F2) over its entire circumference, and a plurality of second directions around its outer circumference. Propulsion of the girder loop tube 20 is performed in a state in which the outer wing 204 for the switching function is hinged by welding (F3) over the entire circumference. At this time, any one of the welding (F1, F2) of the second inner inner ring 203 is a welding made in the factory and the other may be a welding made in the field assembly. Welding F3 of the outer blade 204 for the second turning function is a welding made in a factory.

As illustrated in FIG. 5, the second inner inner ring 203 has a filling joint opening 203a formed at a predetermined interval in the circumferential direction. At this time, the filling junction opening 203a has a larger opening area than the slot opening groove 202a. Of course, the press-in of the girder loop pipe 20 may be made while the hydraulic jack, not shown, is installed inside the propulsion side main propulsion tube 10 to obtain a reaction force.

Subsequently, after the press-fitting installation of the girder pipe 20 is completed, the slot opening groove 202a is filled through the opening 203a of the filling joint of the second inner inner ring 203 as shown in FIG. 6. Welding (S) is made. In this way, the girder loop pipe 20 has a second inner inner ring 203 joined at each connecting node by the full circumferential welding at both ends and the filling welding of the opening 203a for the filling joint, and thus the second propulsion pipe 202. By mutually strong joining, it becomes a continuous steel coupling structure in the ground to form a structurally stable and reinforced loop structure.

After the filling weld S is formed in the slot open groove 202a, the thermal gouging is applied to the entire circumference of the second inner inner ring 203 except for the filling weld S, as shown in FIGS. 7 and 8. It can be carried out. In the case of thermal gouging, the second internal fitting inner ring 203 is melted due to high heat, and the groove is broken, and the gouging welding F4 is performed including the joint surface B2 of the connecting node. Thus, gouging welding (F4) is made around the joint surface (B2) of each connecting node of the girder loop tube 20 can further increase the joint strength.

On the other hand, if you want to change the angle of the propulsion direction as shown in Figure 14 in the press-in step of the girder loop tube 20, before welding is made to the slot open groove 202a as shown in Figure 5, that is, in the state as shown in FIG. As shown in FIGS. 10 to 12, the second transition wedge 22 is positioned in the filling engagement opening 203a of the second inner inner ring 203 side, and then the second switching wedge is made through the hydraulic jack J2. The wedge 22 may be pushed to further change the installation angle of the outer blade 204 for the second turning function at the corresponding position as shown in FIG. 13.

At this time, the fixing after the movement adjustment of the second conversion wedge 22 is fixed to the plurality of fixing bolts 2032 installed in the wedge fixing bracket (2031) installed in the second inner inner ring 203 as shown in Figs. Is made by.

Here, when the angle of the second turning function outer blade 204 is adjusted and protruded by the second turning wedge 22, the second turning function outer blade 204 has increased driving friction and relative As the angular rotation occurs toward the lower frictional force of the portion where the second outer switching function outer blade 204 does not protrude, the girder loop tube 20 has an arc radius or curvature as shown in FIG. 14. It can be promoted as.

Excavation Steps for Vertical Wall Construction

Then, as shown in (c) of Figure 1a for the construction of the vertical wall 40, the lower portion in the main propulsion pipe (10, 10) is cut and excavated to a predetermined depth downward through the cut portion. In drilling, well-known concrete plates and braces can be used as form plates and braces to prevent collapse.

Vertical wall construction Girder  Incision and Sidewall  Installation steps

Then, as shown in (d) of FIG. 1a, the reinforcing bars are assembled in the excavated spaces below the left and right main propulsion pipes 10 and 10, and the concrete is poured to construct the vertical wall 40.

Subsequently, the lower portion of the girder loop tube 20 extends to the main propulsion tube body 10 in the transverse direction and cuts as shown in FIG. 1D, and the excavation is carried out to the lower portion of the cut portion of the girder loop tube 20. The side blocking plate 210 and the upper blocking plate 212 are installed in the cutout of the girder pipe 20 for formwork.

At this time, the cutting of the girder loop tube 20 is performed at regular intervals with respect to the longitudinal direction of the girder loop tube 20.

Support  Construction stage

Next, as shown in (e) of FIG. 1a, the reinforcement is performed to the inside of the space and the girder loop tube 20 excavated to the lower portion of the girder loop tube 20, and the concrete is poured into the support beam 150. Construct it. At this time, the support beam 150 is installed at a predetermined interval with respect to the longitudinal direction of the girder loop pipe (20).

At this time, each end of the girder loop pipe 20 is provided with an unshown formwork so as not to leak out when pouring concrete.

Of main propulsion body  Reinforced concrete filling

Then, as shown in (f) of Figure 1a to reinforce the reinforcement to the inside of the main propulsion pipe 10 and placing the concrete. At this time, the mold not shown is installed at each end of the main propulsion body 10 so as not to flow out when the concrete is poured.

Then, after excavating the internal soil of the underground structure 500 consisting of the vertical wall 40, the main propulsion pipe 10 and the girder loop pipe 20, the concrete is placed on the floor to the bottom of the underground structure 500 The well-known floor slab which comprises is constructed.

On the other hand, in the main propulsion pipe indentation step of the present method, the main propulsion pipe body 10 is a first propulsion pipe in which slot opening grooves 102a are formed at regular intervals around the distal end of the first leading pipe 101 as shown in FIG. 15. By inserting the 102 in sequence it can be made indentation having a connection node. At this time, as shown in FIGS. 4 and 5, each connecting node has a first inner inner ring 103 having a filling joint opening 103a formed at a predetermined interval in the circumferential direction at the front end and the rear end, respectively. , F2), and the main propulsion tube 10 is press-fitted in a state in which a plurality of first outer switching function outer blades 104 are welded to the front end of the outer periphery 104.

In addition, after the press-fitting of the main propulsion body 10 is completed, as shown in FIG. 6, the filling weld (F2) to the slot-opening groove 102a through the filling joint opening 103a of the first inner inner ring 103. This can be done. In this case, the filling joint opening 103a has an open area larger than that of the slot open groove 102a.

In this way, the main propulsion body 10 is the first protruding inner ring 103 in each connecting node is joined by the full circumferential welding of both ends and the filling welding of the filling joint opening 103a, the first propulsion pipe 102 ) Are rigidly bonded to each other to form a continuous steel coupling structure in the ground as shown in Figure 16 to form a structurally stable and reinforced beam-like structure.

After the filling weld S is formed in the slot-opening groove 102a, thermal gouging may be performed at the entire circumference except for the filling weld S in the first inner fitting inner ring 103 as shown in FIG. 7. Therefore, gouging welding (F4) is made around the joint surface (B2) of each connecting node of the main propulsion tube 10 can further increase the joint strength.

On the other hand, in the present method to change the direction angle of the propulsion of the main propulsion pipe body 10, before the filling welding in the slot open groove (102a) as shown in FIG. After positioning the opening portion 103a for the inner joint ring 103, the first turning wedge 12 is pushed through the hydraulic jack J1 as shown in FIG. An operation step of forcibly changing the installation angle of the outer blade 104 may be further performed. At this time, the fixing after the movement adjustment of the first conversion wedge 12 is made by a plurality of fixing bolts 1032 inserted into the wedge fixing bracket 1031 of the first internal fitting inner ring 103 side as shown in FIGS. .

Here, when the angle of the first outer turning function outer blade 104 is adjusted and protruded by the first turning wedge 12, as shown in FIG. 10, the first outer turning function outer blade 104 has a driving friction force. An angular rotation occurs toward the increased and relatively low frictional force of the portion where the first turning function outer blade 104 is not protruded, so that the main propulsion body 10 has an arch curve or curvature having a turning radius R. Can be promoted.

As described above, in this method, the inner fitting inner rings 103 and 203 and the underground propulsion pipes, which are installed on the joint surface of the main propulsion pipe 10 or the girder loop pipe 20 serving as underground propulsion pipes, are welded and connected at the same time. Filling welding is performed through the slot-open grooves 102a and 202a formed at the node side, so that the main propulsion pipe body 10 and the girder loop pipe 20 each have a continuous steel coupling structure. This increases the structural safety of underground structures.

In addition, the propulsion direction is changed by the forced angle adjustment of the turning outer blades 104 and 204 together with the hinged coupling of the underground propulsion tube connecting node, which may have an arch curve or curvature during construction, and the driving force can be avoided by obstacles. It has the advantage of easy introduction and improved construction precision.

On the other hand, in another embodiment of the construction method of the underground structure of the present invention, two steps of (c), (d) of Figure 1a can be modified to three steps (c), (d), (e) of Figure 1e. have. The remaining steps are the same.

That is, as shown in (c) of FIG. 1e, the lower part of the girder loop tube 20 extends to the main propulsion pipe body 10 in the transverse direction and is cut, and the excavation is performed to the lower part of the cut part, and then for the support beam formwork. After having the step of installing the side membrane plate 210 and the top membrane plate 212 of Figure 1c in the cutout of the girder loop tube 20, as shown in (d) of Figure 1e Reinforce the reinforcement to the inside of the part and the girder pipe (20), and after the step of constructing the support beam 150 by pouring concrete, the left and right main propulsion pipe (10, 10) as shown in (e) of FIG. The construction can be made in the order of the step of cutting the lower portion and performing excavation to a certain depth downward through the cut portion.

10: main propulsion body
101: the first pilot
102: first propulsion pipe
102a: slot open groove
103: first inner ring inner ring
103a: opening for filling bonding
104: outer wing for the first direction switching function
12: first transition wedge
20: Girder loop tube
20a: bundle loop tube
201: second leading pipe
202: second propulsion pipe
202a: slot open groove
203: second inner ring inner ring
203a: opening for filling bonding
204: outer wing for second direction switching function
22: second transition wedge

Claims (7)

Positioning the main propulsion pipe (10) on the left and right sides of the roof of the underground structure 500 to be constructed and pressurized in the ground so as to be disposed in the longitudinal direction of the underground structure 500, and removing the soil inside the main propeller pipe (10) and ;
After removing the earth and sand inside the girder loop pipe 20 while pressing a plurality of girder loop pipe 20 into the ground between the left and right main propulsion pipe (10, 10) to form an arch or flat form, the vertical wall 40 Cutting the lower part of the main propulsion pipe (10, 10) for the construction of) and excavating downward through the cut portion to a predetermined depth;
Assemble the reinforcement in the space excavated to the lower part of the left and right main propulsion pipe (10, 10) and cast concrete to construct a vertical wall (40), the lower portion of the girder pipe (20) in the transverse direction main propeller pipe (10) Incision, extending to the bottom, and performing excavation to the lower part of the incision, and then installing the side blocking plate 210 and the upper blocking plate 212 to the cutout of the girder pipe 20 for the support formwork. Wow;
Performing reinforced reinforcement into the space excavated below the incision portion of the girder loop pipe 20 and the interior of the girder loop pipe 20, and pouring concrete to construct the support beam 150;
Performing reinforcement and placing concrete into the main propulsion body 10;
When the angle of propulsion direction of the girder pipe 20 is changed, the opening 203a for filling-bonding the second transition wedge 22 to the second inner inner ring 203 side before welding is made to the slot-open groove 202a. After positioning in, by forcing the second switching wedge 22 through the hydraulic jack (J2) forcibly changing the installation angle of the outer blade 204 for the second turning function of the corresponding position;
The girder loop tube 20 is press-fitted to the second lead pipe 201 by sequentially fitting the second propulsion pipe 202 having the slot open grooves 202a formed at predetermined intervals around the tip end,
On the inner circumferential surface of each connecting node to which the second propulsion pipe 202 is fitted, a second inner fitting inner ring 203 is formed, in which a filling joining opening 203a is formed at regular intervals in the circumferential direction. Welded at the rear end (F1, F2) is installed, the outer peripheral surface of the connecting node a plurality of outer wings for the second direction switching function 204 is installed at the front end by welding (F3),
After the press-fit of the girder loop pipe 20 is completed, the inner inner ring is installed in the underground propulsion pipe, characterized in that the filling welding S is made in the slot open groove 202a through the opening 203a for filling. Method of construction of underground structures with continuous steel coupling structure. Positioning the main propulsion pipe (10) on the left and right sides of the roof of the underground structure 500 to be constructed and pressurized in the ground so as to be disposed in the longitudinal direction of the underground structure 500, and removing the soil inside the main propeller pipe (10) and ;
Removing earth and sand inside the girder loop pipe 20 while pressing the plurality of girder loop pipes 20 into the ground so as to have an arch shape or a flat shape between the left and right main driving pipe bodies 10 and 10;
The lower part of the girder pipe 20 extends to the main propulsion pipe body 10 in the transverse direction, and is excavated to the lower part of the cut part, and then the side blocking plate 210 and the upper blocking plate are formed for supporting dies. Installing 212 at the cutout of the girder loop tube 20;
Performing reinforcement into the cutout portion of the girder loop tube 20 and the inside of the girder loop tube 20, and pouring the concrete to construct the support beam 150;
After cutting the lower part from the left and right main propulsion body (10, 10) and excavation downward to a certain depth through the cut portion, assembling the reinforcing bar in the excavation space and pouring concrete to construct the vertical wall (40) Wow;
Performing reinforcement and placing concrete into the main propulsion body 10;
When the angle of propulsion direction of the girder pipe 20 is changed, the opening 203a for filling-bonding the second transition wedge 22 to the second inner inner ring 203 side before welding is made to the slot-open groove 202a. After positioning in, by forcing the second switching wedge 22 through the hydraulic jack (J2) forcibly changing the installation angle of the outer blade 204 for the second turning function of the corresponding position;
The girder loop tube 20 is press-fitted to the second lead pipe 201 by sequentially fitting the second propulsion pipe 202 having the slot open grooves 202a formed at predetermined intervals around the tip end,
On the inner circumferential surface of each connecting node to which the second propulsion pipe 202 is fitted, a second inner inner ring 203 having a filling joint opening 203a is formed at regular intervals in the circumferential direction, Welded at the rear end (F1, F2) is installed, the outer peripheral surface of the connecting node a plurality of outer wings for the second direction switching function 204 is installed at the front end by welding (F3),
After the press-fit of the girder loop pipe 20 is completed, the inner inner ring is installed in the underground propulsion pipe, characterized in that the filling welding S is made in the slot open groove 202a through the opening 203a for filling. Method of construction of underground structures with continuous steel coupling structure. delete The method according to claim 1 or 2,
The main propulsion pipe body 10 has a connection node by inserting the first propulsion pipe 102 in which the slot opening grooves 102a are formed at regular intervals around the distal end of the first leading pipe 101 at a predetermined interval. It's done,
In each connecting node to which the first propulsion pipe 102 is fitted, a first inner inner ring 103 having a filling joint opening 103a is formed at a predetermined interval in the circumferential direction. Welded at the rear end (F1, F2) is installed, the outer circumferential surface of the connecting node a plurality of outer wings 104 for the first direction switching function is welded to the front end (F3),
After the press-fitting of the main propulsion body 10 is completed, the inner inner ring is installed in the underground propulsion pipe, characterized in that the filling welding (S) is made in the slot-opening groove 102a through the opening 103a. Method of construction of underground structures with continuous steel coupling structure. The method according to claim 1 or 2,
When the angle of the propulsion direction of the main propulsion body 10 is changed, before the welding is made to the slot-opening groove 102a, the first transition wedge 12 is filled with the opening portion 103a for the first inner fitting ring 103. After the position, by pressing the first switch wedge 12 through the hydraulic jack (J1) forcibly changing the installation angle of the outer blade 104 for the first turning function of the corresponding position; Method of construction of underground structures having in-line fitting inner ring installed in underground propulsion pipe with continuous steel coupling structure. The method according to claim 1 or 2,
After the filling welding (S) is made in the slot opening groove (202a), the second inner fitting inner ring 203 is thermally gouged around the entire circumference except the filling welding (S). Construction method of underground structures having a continuous steel coupling structure is installed in the inner propulsion tube is installed in the underground propulsion pipe characterized in that the gouging welding (F4) is made around the joint surface (B1) of the connection node. The method of claim 4, wherein
After the filling welding (S) is made in the slot opening groove (102a), the first internal fitting inner ring 103 is subjected to thermal gouging all around except for the filling welding (S), the angle of the main propulsion body (10) Construction method of underground structures having a continuous steel coupling structure is installed in the inner propulsion tube is installed in the underground propulsion pipe characterized in that the gouging welding (F4) is made around the joint surface (B2) of the connection node.

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