KR20070002328A - Construction method of pipe roof structures - Google Patents

Abstract

A construction method of a steel pipe roof structure is provided to reduce the time and cost required for construction and to improve construction quality and stability by using a steel pipe roof structure having horizontal stiffness after coupling with reinforced concrete. A construction method of a steel pipe roof structure(950) comprises the steps of: excavating the ground to a propulsion base, installing piles on both side walls and installing struts and vertical stiffeners on the upper part of the propulsion base horizontally or vertically to secure stability against earth pressure; constructing a reaction wall and propulsion rails after spreading footing rubbles on the propulsion base and placing concrete; manufacturing a steel pipe(500) to be the center of a steel pipe roof structure after measuring the propulsion location for a steel pipe for the center of a steel pipe roof structure; selecting the propulsion location of propulsion facilities and installing propulsion facilities composed of an H-beam shaped propulsion rail for guiding the horizontal movement of the steel pipe, a push bar for propelling the steel pipe and a hydraulic jack for propulsion for pushing the push bar; propelling the steel pipe using the hydraulic jack for propulsion and the push bar; after propelling the steel pipe completely, removing the propulsion rail, the hydraulic jack for propulsion and the push bar and measuring for confirmation; manufacturing steel pipes(700) for the general section; manufacturing propulsion facilities composed of a propulsion rail, a push bar and a hydraulic jack for propulsion, and propelling the steel pipes; connecting the steel pipe for the center and the steel pipes for the general section in one roof and welding reinforcing bars through connecting grooves of the steel pipes; placing concrete in the steel pipes and curing the concrete surface; excavating the inside of the steel pipe roof structure primarily and secondarily; and arranging reinforcing bars and spraying mortar or putting a form and placing concrete.

Description

Construction method of pipe roof structures

1 and 2 is a cross-sectional view for explaining a conventional non-attached structure construction method.

Figure 3 is a detailed cross-sectional view showing a connection structure of the steel pipe loop structure in Figures 1 and 2.

4 and 5 is a cross-sectional view for explaining another conventional non-attached structure construction method.

Figure 6 is a cross-sectional view showing a connection structure of the steel pipe loop structure in Figures 4 and 5.

Figure 7 is a perspective view showing the connection of the steel pipes constituting the steel pipe loop structure according to the applicant of the present application.

FIG. 8 is a schematic cross-sectional view with the steel pipes coupled to FIG. 7.

Figures 9a to 9g is a work flow chart showing the step of sequentially constructing the incoming steel pipes according to the applicant of the present application.

10 and 11a, 11b is a cross-sectional view for explaining a non-bonded structure construction method using a steel pipe loop structure according to the applicant of the present invention.

Figure 12 is a perspective view showing the connection of the steel pipes forming a steel pipe loop structure according to another embodiment in the applicant of the present application.

FIG. 13 is a schematic cross-sectional view with the steel pipes coupled to FIG. 12.

Figure 14 is a cross-sectional view showing a state in which the underground structure in a state in which the steel pipe loop structure according to Figures 12 and 13 connected by a connector.

15 and 16 are cross-sectional views for explaining another embodiment of the non-attached structure construction method using a steel pipe loop structure according to the applicant of the present invention.

17 and 18 are structural cross-sectional views for explaining another non-bonded structure construction method using another steel pipe loop structure in the applicant of the present application.

19 to 34 is a configuration diagram sequentially showing the procedure of the construction method of the steel pipe loop structure according to the present invention.

<Description of the symbols for the main parts of the drawings>

500: guiding center steel pipe 502: leading pipe

504,506,508: Propulsion pipe 520: Angle

530: connection ring 600: propulsion rail

610: push rod 620: propulsion hydraulic jack

700: general section steel pipe 702: leading pipe

704,706,708: propulsion pipe 710: reinforcement plate

720: angle 730: support

740: connection ring 800: communication groove

900: rebar

The present invention relates to a method for constructing a steel pipe loop structure, and more particularly, by connecting neighboring steel pipes to each other in a state in which the lateral stiffness is secured in a horizontally aligned state, thereby providing a separate horizontal support. The present invention relates to a method of constructing a steel pipe loop structure in which a steel pipe loop structure that can be constructed without a beam is combined with reinforced concrete to form the present structure with a temporary facility, thereby reducing air and construction costs and further improving stability.

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

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

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

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

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

Since the present invention is mainly applied to the steel pipe loop method of the non-adhesive method, the present invention will be explained by explaining an example of the existing steel pipe loop method.

Hereinafter, the conventional steel pipe loop method will be described with reference to FIGS. 1 to 3 in order to explain the difference from the conventional steel pipe loop method.

In the conventional steel pipe loop method, the steel pipe 1 is sequentially press-ined and connected to the ground where the structure is to be formed to form a steel pipe loop, and remove all the internal soil inside the steel pipe loop and construct the structure, as shown in FIG. As described above, the upper or side loads generated during the excavation are supported by temporary materials such as lateral support beams 4 and temporary columns 5.

Briefly describing the construction process of the steel pipe loop, considering the size of the sphere to be constructed at the forward base, horizontally indented the temporary steel pipe (1) of about 600 ~ 800mm to the outer surface of the sphere and cast concrete in the steel pipe in Figure 1 To form a steel pipe loop.

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

At this time, the excavation is primarily to excavate the bottom of the steel pipe loop with a depth of about 3m, the steel pipe (1) and the steel pipe (1) used in the steel pipe loop is a simple ring shape (2, 3) as shown in FIG. Since it is connected, horizontal support beams (4) are installed with H-shaped steel in the direction perpendicular to the steel pipe on the lower surface and side of the steel pipe loop, and supported by a plurality of temporary columns (5) to support the load over the entire section.

In other words, as shown in FIG. 3, the existing steel pipe loops mutually press-fitted steel pipes with a concave-convex structure having a pair of L-shaped rings 2 and a T-shaped clasp 3 attached to a central portion of the steel pipe side. It is only a concept to prevent the positional deviation of the steel pipe rather than to bear the load by connecting in the form of a ring.

Therefore, there is a problem that can not secure the lateral rigidity between the connecting portion of the steel pipe loop. The transverse support (4) and a larger number of temporary columns (5) should be installed, because the structure should be installed spaced apart by the support beam (4) there was a problem that the size of the temporary installation increases.

After the 2nd and 3rd excavation, the already installed temporary column (5) is carefully extended downward to complete the excavation of the earth and sand to the installation depth of the structure, and finally, the upper slab (60), the wall (65), And installing reinforcing bars and formwork for the lower slab 80 and the like and placing concrete to complete the structure of the underground construction.

The conventional steel pipe loop method constructed as above has a high possibility of subsidence during construction due to a problem that the installed temporary pillar is extended downward to the installation depth after excavation, and it is inferior to the existing installed temporary materials (4, 5). The problem was that the air was delayed and the construction cost was high.

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

That is, as shown in FIGS. 4 and 5, the structure constructed by the non-adhesive steel pipe loop structure also has the upper and lower slabs 60 and 80 and the wall portion 65 under the steel pipe loop structure as in the conventional method described above. have.

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

The reason for this is that, as shown in Fig. 6, the flange 12 and the clasp steel plate 100 are attached to both sides, and the flange 12 of a certain steel pipe is connected to this steel pipe. Since the clasp steel plate 100 of the steel pipe to be fitted to each other, the steel pipe inside, and the concrete pressure is filled in the closed pressure space (6) formed by the flange 12 and the clasp steel plate 100 to increase the load capacity. to be.

In other words, when the steel pipes are continuously connected to each other as described above, a space 6 forcibly closed by the flange and the clasp steel plate is formed.

Of course, by filling the mortar or concrete in the closed space (6) formed by the interior of the steel pipe (10) and the connection device, such as the flange 12 and the clasp steel plate 100 of the steel pipe and steel pipe can better support the upper soil load. An integrated transverse continuous hypothetical loop structure is formed, which eliminates the need for the transverse support beams 4 installed under the steel pipe loops.

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

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

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

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

Accordingly, the applicant of the present invention in view of the above problems by connecting the neighboring steel pipes to each other in a state aligned with each other to ensure that the stiffness in the horizontal direction is aligned, so that the construction without additional lateral support A steel pipe loop structure and a construction method (Patent Application No. 2005-18780) of the steel pipe loop structure, which have been made possible, have been proposed and filed.

The steel pipe loop structure and the construction method of the steel pipe loop structure will be described in detail with reference to FIGS. 7 to 18 as follows.

First, the steel pipe that is pushed and pushed first during the construction of the steel pipe loop structure uses a diameter set according to the size of the construction, and uses a conventional steel pipe.

In this way, the support 202 is installed on one side of the inner pipe of the first press-propelled steel pipe 200 in a vertical direction at regular intervals.

At this time, the support 202 is preferably fixed to the inner surface of the steel pipe 200 by welding, but is not limited to the fixing method.

Next, the horizontal groove 204 may be formed by cutting the direction in which the support 202 is installed, that is, one side direction in the longitudinal direction, wherein the load according to the earth pressure in the upper part is supported by the support 202 already installed. One side of the steel pipe 200 is cut so that the horizontal groove 204 is not crushed even if it is formed.

As such, when the first steel pipe is press-propelled and the horizontal groove 204 is formed at one side thereof, the angle 206 corresponding to the horizontal groove 204 is formed at one side of the steel pipe 200 to be press-propelled next. Fix it.

That is, the angle 206 may be fixed to one side of the steel pipe to be press-propelled at an interval corresponding to the length of the upper and lower horizontal grooves 204 of the steel pipe 200.

At this time, the fixing of the angle 206 is preferably fixed by welding, but may be fixed by bolts, and the fixing means and method are not limited.

As such, while the angle 206 is fixed to one side of the steel pipe to be pushed, the angle 206 is pushed and pushed while sliding into the horizontal groove 204 of the steel pipe push-propelled.

In this case, a bolting hole (not shown) is fixed to one side of the steel pipe to be propelled in a state of pre-construction, and then press-propelled to bolting to one side of the support 202 of the press-propelled steel pipe to provide a more solid binding force. You can also have it.

Then, as shown in FIGS. 8 and 9c, the steel pipes are connected to each other in a state in which they are prevented from escaping from each other, and even if the press-propelled steel pipes are in an error position from the set position, the steel pipes to be push-propelled are sufficiently pushed in while pushing the push-propelled steel pipes. You can modify it.

After that, the support is fixed up and down on one side of the press-propelled steel pipe, cut to form a horizontal groove on one side, and then press-propelled the next steel pipe in the same manner as before.

Then, as shown in FIG. 9g, the steel pipes are connected to each other without being separated from each other to form an integrated steel pipe loop structure.

Therefore, the steel pipe loop structure is more firmly aligned, thereby maintaining the transverse direction, that is, the horizontal direction even under the load due to the pressure of the soil, and having a stronger transverse rigidity, so that a separate transverse support is required. There will be no.

In this state, when the earth and sand existing therein is pushed out according to the push-in propulsion of the steel pipes, and the concrete or mortar is filled and cured therein, the steel pipe loop structure forms a unitary structure in a horizontal state.

For reference, in the press-propelled state of the steel pipe, the support is installed at one side at regular intervals, and a part of the incision is formed to form a horizontal groove in the longitudinal direction. However, when the depth of the working place is not large, the outside for convenience of work After cutting a portion to form a horizontal groove in the state, and press-propelled in this state, a support may be installed.

The structure constructed by the steel pipe loop structure described above also has the upper and lower slabs 60 and 80 and the wall portion 65 under the steel pipe loop structure as shown in FIGS. 11A, 11B, and 12, and support beams 40 on both sides. ) Only the construction of the tunnel is made easier.

On the other hand, Figure 12 is a perspective view showing the connection of the steel pipes constituting the steel pipe loop structure according to another embodiment of the present invention, Figure 13 is a schematic cross-sectional view in a state in which the steel pipes are coupled in FIG.

In the present embodiment, the communication groove 210 is formed at a predetermined interval on the opposite side of the horizontal groove 204 of the steel pipe 200 at regular intervals.

That is, the other steel pipes except for the first press-propelled steel pipe is formed in the communication groove 210 at regular intervals on the opposite side formed with the support 202 and the horizontal groove 204.

Like the horizontal groove 204, the communication groove 210 may also be formed by cutting in a state in which the steel pipe is press-propelled, or may be formed before press-propulsion.

The communication grooves 210 are formed on the opposite side of the support 202 and the horizontal groove 204, and thus are positioned between the angles 206 formed up and down.

As such, when the steel pipe 200 having the communication groove 210 is formed by press-propelling the steel pipe 200 in the same manner as in the previous embodiment, the steel pipe loop structure is installed, and the steel pipes of the steel pipe loop structure are horizontal grooves with the communication grooves 210. Intercommunication is achieved by means of 204.

Therefore, when the concrete or mortar is filled and cured in the steel pipe 200 in this state, the concrete or mortar is connected to each other by the communication grooves 210 and the horizontal grooves 204 to form one integrated structure. Is achieved.

As a result, the lateral coupling force of the steel pipes in the steel pipe loop structure is increased, and thus the lateral rigidity of the steel pipe loop structure is increased.

On the other hand, through the communication grooves 210 and the horizontal grooves 204 formed in the steel pipes of the steel pipe loop structure through the connector 220, such as reinforcing bar can be more solid as a structure.

That is, as described above, the steel pipe structures communicate with each other by the communication grooves 210 and the horizontal grooves 204 formed in the steel pipes, thereby forming a plurality of rebars through the communication grooves 210 and the horizontal grooves 204. In the inserted and connected state, when the concrete or mortar is filled and cured inside the steel pipe, the concrete or mortar is connected to each other by the communication grooves 210 and the horizontal grooves 204 to form one integrated structure. This room, of course, the connector 220, such as reinforcing bars further increase the binding force of the steel pipes to further increase the lateral coupling of the steel pipes in the steel pipe loop structure.

For reference, in the present invention, the tunnel between the reciprocating section is shown as an example, but as shown in Figs. 15 and 16, the tunnel between the knitting tools can be constructed as a steel pipe loop structure having the same configuration, and the upper wall and the sidewall are perpendicular to each other. 17 and 18, but also in the elliptical tunnel, it can be seen that the construction as a steel pipe loop structure of the same configuration is also possible.

Of course, the steel pipe loop structure applied to the inter-knife tunnel as shown in Figs. 15 and 16, or the ellipsoidal tunnel as shown in Figs. 17 and 18, the concrete in the state of forming a communication groove as in another embodiment of the present invention. B or mortar may be poured, or concrete or mortar may be poured in a state in which a connector such as reinforcing bar is installed through the communication groove and the horizontal groove to have more robustness.

Accordingly, according to the above-described steel pipe loop structure and the construction method of the steel pipe loop structure, one side of the steel pipe is cut to form a horizontal groove, and the angle fitted to the horizontal groove is fixed to one side of another adjacent steel pipe, and the angle The steel pipe loop structure is repeatedly formed by sliding the horizontal groove of the press-propelled steel pipe and being aligned with each other so as to align with each other. By providing an integrated steel pipe loop structure with a solid binding force, it is possible to earthwork work by installing only temporary columns without installing a horizontal support beam due to the lateral rigidity of the steel pipe loop structure during internal earthwork for structure construction. This reduces the size of the hypothesis loop and simplifies the construction process. The.

The present invention, by connecting the neighboring steel pipes to each other in a state that is aligned in the horizontal direction so that the stiffness in the horizontal direction, it is possible to be installed without a separate horizontal support, steel pipe loop having a lateral rigidity The purpose is to provide a construction method of steel pipe roof structure that improves quality and stability as well as reducing construction cost and air by combining the structure with reinforced concrete and using it as temporary structure.

The present invention for achieving the above object, in the method for constructing a steel pipe loop structure applied to the steel pipe loop method for constructing the structure in the ground, excavating the ground to the propulsion rail surface position to construct the propulsion base and temporary equipment step; Constructing a thrust rail portion and a reaction wall on the thrust rail surface; Manufacturing a guide center steel pipe of the steel pipe loop structure; Surveying a position at which the guide-centered steel pipe is propelled; Installing a propulsion facility for promoting the guide-centered steel pipe, and pushing and injecting the guide-centered steel pipe using the propulsion facility; When the propulsion of the guide-centered steel pipe is completed, removing and checking the propulsion facility; Manufacturing steel pipes of a general section sequentially connected to the guide-centered steel pipe; Installing a propulsion facility for propelling the steel pipes of the general section, and pushing and injecting the steel pipes using the propulsion facility; Placing concrete in the guide center steel pipe and the section steel pipes; Sequentially excavating the inside of the steel pipe loop structure formed by the guide-centered steel pipe and the general section steel pipes, and constructing gibs; And constructing the structure by spraying mortar spray on the reinforcement of the steel pipe loop structure or by pouring concrete on the formwork.

In this case, in the step of excavating the ground to the position of the propulsion rail surface to investigate the obstacles and the ground of the construction zone in the step of constructing the propulsion base and temporary equipment, it is characterized in that to install the earthwork facility for maintaining the road complement.

At this time, it is preferable that the horizontal length of the propulsion base is constructed on a scale of about 7 to 10 m.

On the other hand, in the step of constructing the propulsion rail portion and the reaction wall on the propulsion rail surface, the propulsion rail portion is buried foundation rubble, the concrete is placed on the construction, the reaction wall is also constructed by pouring concrete It is done.

In addition, in the step of manufacturing the guide center steel pipe of the steel pipe loop structure, the guide center steel pipe is to be horizontally connected as a connecting pipe having a predetermined length, the propulsion pipe having a predetermined length as a connecting ring, the propulsion to the leading pipe Characterized in that the linear adjustment screw is installed to correct the linear error that occurs during the installation.

In this case, it is characterized in that the angle is fixed to each side of the guide-centered steel pipe, respectively.

In addition, the length of the lead pipe is 1m, the length of the remaining propulsion pipe is preferably manufactured to 3m.

On the other hand, the propulsion facility for propelling the guide steel pipe, characterized in that it provides a propulsion rail made of H beam, a push rod for pushing the guide center steel pipe, and a propulsion hydraulic jack for pushing the push rod.

At this time, it is preferable to use the push rod in combination by protruding length by dividing by 1m.

On the other hand, in the step of manufacturing the steel pipes of the general section sequentially connected around the guide-centered steel pipe, the steel pipes of the general section so that the lead pipe having a certain length, and the propulsion pipes having a certain length are connected horizontally as a connection ring It is characterized by producing.

In this case, one side of the steel pipe of the general section is formed so that the horizontal groove for inserting the angle of the steel pipe to be slidably inserted, characterized in that the angle is fixed to the other side.

In addition, the reinforcing plate is fixed to the inner side of the horizontal groove, the support between the reinforcing plate is characterized in that it is manufactured to have a rigid to earth pressure due to the horizontal groove.

In this case, it is preferable that the length of the lead pipe is 1m, the length of the remaining propulsion pipe is 3m.

On the other hand, the propulsion facility for propelling the steel pipe of the general section, characterized in that it provides a propulsion rail made of H beam, a push rod for pushing the guide center steel pipe, and a propulsion hydraulic jack for pushing the push rod.

In this case, the rods are preferably divided into 1m and used in combination according to the propulsion length.

On the other hand, while the guide-centered steel pipe and the steel pipes of the general section is pushed and pushed by the propulsion facility, forming a communication groove between the angle of the steel pipes, and connecting and fixing the steel pipes connected by using the communication groove with reinforcing bars It is characterized by increasing the binding force.

Further, in the step of excavating the interior of the steel pipe loop structure formed by the guide-centered steel pipe and the general section steel pipes, after excavating a portion primarily from the top, to support the earth pressure load by installing horizontal support, vertical support and inclined support And, gradually characterized in that the second excavation to the remaining portion.

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

19 to 34 sequentially show the construction procedure of the construction method of the steel pipe loop structure according to the present invention.

First, as shown in Figure 19, prior to the construction of the steel pipe loop structure for the construction of the tunnel, etc., the installation of the propulsion base and the construction of the temporary installation.

That is, after examining the obstacles in the construction section, after the ground survey of the construction section, the earthwork facility is installed to maintain and supplement the road, and then the ground is excavated to the propulsion rail surface 306 position.

At this time, the total length of the propeller ground (306) is preferably produced in 7 ~ 10m scale.

Excavate the ground as described above to build the side wall pile 300 on both sides of the wall, and to install the brace 302 and the vertical reinforcement 304 horizontally or vertically at regular intervals on the propulsion rail surface 306 by the earth pressure Secure stability

Next, as in FIG. 20, the reaction force walls 314 and the pushing rail portions 310 and 312 are urged.

That is, the foundation rubble 310 is laid on the propulsion rail surface 306, and the support concrete 312 is placed thereon, and the concrete is poured into the reaction force portion opposite to the propulsion portion where the steel pipe is propelled to the reaction force wall 314. Build a.

Next, after measuring the propulsion position of the guide-centered steel pipe to be described later in the propulsion rail portion as shown in Figure 21, and then, as shown in Figures 22 to 24, the guide-centered steel pipe 500 to be the center of the steel pipe loop structure To produce.

The guide-centered steel pipe 500 is the leading pipe 502 and the plurality of propulsion pipes 504, 506, 508, which are first pushed to the propulsion unit is fixed as a connection ring 530, respectively, wherein the leading pipe 502 The length of is approximately 1m, and the remaining propulsion pipe (504,506.508) is to be 3m, the connection ring 530 is preferably applied to the thickness of the steel pipe.

At this time, the leading pipe 502 of the guide-centered steel pipe 500, the linear adjustment screw 510 is provided on the inner surface of the steel pipe at equal intervals in order to correct the linear error that may occur when the steel pipe propulsion.

In addition, angles 520 are fixed to both outer sides of the guide-centered steel pipe 500.

As described above, the propulsion position of the guide-centered steel pipe is selected by accurate measurement, and when the manufacture of the guide-centered steel pipe is completed, the position of the propulsion facility is selected according to the propulsion position as shown in FIG.

The propulsion facility, the H-beam-shaped propulsion rail 600 for guiding the horizontal movement of the guide center steel pipe 500, the push rod 610 for pushing the guide center steel pipe 500, and the push rod 610 It is composed of a propulsion hydraulic jack 620 for pushing).

In this case, the push rod 610 is preferably produced by dividing by 1m and used in combination according to the propulsion length.

When the propulsion facilities such as the propulsion rail 600, the propulsion hydraulic jack 620, the push rod 610 is completed as described above, the guide center steel pipe 500 using the propulsion hydraulic jack 620 and the push rod 610. Insert

At this time, the lead pipe 502 is first pushed to the selected position is to be drawn in, the excavation of the earth and sand loaded in the lead pipe 502 of the guide-centered steel pipe 500 in accordance with the above-mentioned promotion, Subsequently, propulsion pipes 504, 506, and 508 connected to the lead pipe 502 are sequentially pushed and pressed.

That is, the excavation of the earth and sand loaded therein in accordance with the propulsion of the first propulsion pipe 504, and again the process of excavating the earth and sand loaded in it in accordance with the propulsion of the second propulsion pipe 506 is repeated. .

For reference, it is preferable to check the error at any time during the propulsion of the guide-centered steel pipe 500 as described above.

When the press-in of the guide-centered steel pipe 500 is completed as described above, after removing the propulsion rail 600, the propulsion hydraulic jack 620 and the push rod 610, etc. of the guide-centered steel pipe 500, as shown in Figure 26 Conduct a verification survey.

That is, by performing a precise measurement and reconfirmed whether the guide-centered steel pipe 500 is properly indented as originally planned, it moves to a position for propulsion of other steel pipes 700 to be described later.

When the indentation of the guide center steel pipe 500 is made according to the construction plan, a steel pipe 700 (see FIGS. 27 and 28) of a general section sequentially connected to the guide center steel pipe 500 is manufactured.

The steel pipes 700 of the general section are also propelled first to the propulsion pipe 702 and a plurality of propulsion pipes 704, 706, and 708 are fixed to the connection ring 740, respectively, wherein the lead pipe 702 ) Is approximately 1 m in length, and the remaining propulsion pipes 704, 706, 708 are 3 m, but the connection ring 740 is preferably applied to the thickness of the steel pipe 700.

At this time, one side of the steel pipe 700 is cut so that one side angle 520 of the guide-centered steel pipe 500 is inserted inwardly to form a sliding groove to form a horizontal groove (not shown). An angle 720 is installed on the opposite surface of the horizontal groove to the outside.

When the production of the general section of the steel pipe 700 is completed as described above, and install the propulsion rail 600 and the push rod 610 and the propulsion hydraulic jack 620, which is a propulsion facility to propel these steel pipes 700.

Of course, even in this case, the push rod 610 is preferably produced by dividing by 1m and used in combination according to the propulsion length.

When the propulsion facilities such as the propulsion rail 600, the propulsion hydraulic jack 620, the push rod 610 is completed as described above, using the propulsion hydraulic jack 620 and the push rod 610 as shown in FIG. Promote 700.

At this time, the lead pipe 702 is first pushed to the selected position is to be drawn, the excavation of the earth and sand to be loaded inside the lead pipe 702 of the steel pipe 700 in accordance with the above-described promotion, and subsequently Propulsion pipes 704, 706, 708 connected to the lead pipe 702 are sequentially pushed and pressed.

That is, the excavation of the earth and sand loaded therein in accordance with the propulsion of the first propulsion pipe 704, and again the process of excavating the earth and sand loaded in it in accordance with the propulsion of the second propulsion pipe 706 is repeated. .

For reference, when the steel pipe 700 is propelled as described above, it is possible to visually measure the bar, and it is not necessary to perform a separate survey after removing the propulsion rail, the push rod, and the hydraulic jack for propulsion.

As described above, the angle of the guide-centered steel pipe 500 is inserted into the horizontal groove of the steel pipe 700 so as to be pulled in and connected to the steel pipe 700. As shown in FIG. 28, the reinforcement plate 710 inside the steel pipe 700. ) And support 730 is installed to prevent the steel pipe 500 from being deformed by earth pressure.

In the same manner as in FIG. 22 or 30 in the state in which the guide-centered steel pipe 500 and the steel pipe 700 of the general section tied in a loop, the connected steel pipes (500, 700) as shown in FIG. After cutting and forming the communication groove 800 as much as possible, by connecting and welding the pre-processed reinforcing steel 900 through the communication groove 800, the binding force of the neighboring steel pipes 500, 700 may be further increased.

That is, the guide center steel pipe 500, the guide center steel pipe 500 and the neighboring steel pipe 700 is connected to the reinforcement (900) through the communication groove 800, the binding force is further increased, In addition, the angles 520 and 720 of the steel pipe and the horizontal groove end of the adjacent steel pipe which are in contact with the angle are also fixed by welding to further increase the binding force.

As such, the guide-centered steel pipe 500 and the steel pipes 700 are connected to each other to form a loop structure, and as shown in FIG. 32, concrete is poured into the steel pipes 500 and 700.

After the concrete is poured into the steel pipe loop structure as described above, when curing is performed, the inside of the steel pipe roof structure is excavated according to the primary and secondary as shown in FIG. 33.

That is, when the first excavation is made, the horizontal support 910 and the vertical support 920 or the inclined support 930 are installed on the steel pipe loop structures to prevent collapse due to earth pressure, and then the second excavation is gradually performed. To be implemented.

When the excavation is completed as described above, after reinforcing the reinforcing bar, the structure 950 may be constructed.

In this case, the structure 950 can be constructed by spraying mortar spray without formwork after reinforcement, as well as by placing concrete with formwork as in the prior art.

For reference, the construction method of the steel pipe loop structure as described above, as well as the tunnel between the reciprocating section, as well as the tunnel between the knitting tools as shown in Figs. Of course, it is also possible to construct the elliptical tunnel as shown in Figs. 17 and 18, in which the wall and the sidewall are not perpendicular to each other.

As described above, according to the construction method of the steel pipe loop structure according to the present invention, by providing an integral steel pipe loop structure having a solid binding force, when the earthwork inside the structure for the construction of the structure to the stiffness of the steel pipe loop structure Due to the construction of the earthwork by installing only temporary columns without the installation of a separate transverse support beam, the size of the temporary roof is reduced, and the construction process is also possible by combining the steel pipe loop structure with the reinforced concrete so that the construction can be used as a temporary structure. Being simple has a very useful effect.

In other words, air and construction costs are reduced, but the stability is more effective.

Claims (17)

In the method of constructing a steel pipe loop structure applied to the steel pipe loop method for constructing a structure in the ground, Excavating the ground to the propulsion rail surface to construct the propulsion base and provisional facilities; Constructing a propulsion rail portion and a reaction force wall on the propulsion rail surface; Manufacturing a guide center steel pipe of the steel pipe loop structure; Surveying a position at which the guide-centered steel pipe is propelled; Installing a propulsion facility for promoting the guide-centered steel pipe, and pushing and injecting the guide-centered steel pipe using the propulsion facility; When the propulsion of the guide-centered steel pipe is completed, removing and checking the propulsion facility; Manufacturing steel pipes of a general section sequentially connected to the guide-centered steel pipe; Installing a propulsion facility for propelling the steel pipes of the general section, and pushing and injecting the steel pipes using the propulsion facility; Placing concrete in the guide center steel pipe and the section steel pipes; Sequentially excavating the inside of the steel pipe loop structure formed by the guide-centered steel pipe and the general section steel pipes, and constructing gibs; And constructing the structure by spraying mortar spray on the inside of the steel pipe loop structure or by spraying the formwork or by pouring concrete to form the structure of the steel pipe loop structure. The method of claim 1, The construction of the steel pipe loop structure, which investigates the obstacles and the ground of the construction section at the stage of constructing the propulsion base and temporary facilities by excavating the ground to the position of the propulsion rail, and installs earthwork facilities for maintaining the road Way. The method according to claim 1 or 2, The horizontal length of the propulsion base is a construction method of a steel pipe loop structure, characterized in that the construction of about 7 ~ 10m scale. The method of claim 1, In the step of constructing the propulsion rail portion and the reaction wall on the propulsion rail surface, the propulsion rail portion is embedded in the base rubble, the concrete is placed on the construction, the reaction force wall is also characterized in that the construction by pouring concrete Construction method of steel pipe loop structure. The method of claim 1, In the step of manufacturing the guide center steel pipe of the steel pipe loop structure, the guide center steel pipe is a lead pipe having a certain length, and the propulsion pipe having a predetermined length so as to be connected horizontally as a connecting ring, the lead pipe is generated during the propulsion Construction method of a steel pipe loop structure, characterized in that to produce a linear adjustment screw for correcting the linear error. The method according to claim 1 or 5, Construction method of the steel pipe loop structure, characterized in that the angle is fixed to each side of the guide-centered steel pipe, respectively. The method of claim 5, The length of the lead pipe is 1m, the length of the remaining propulsion pipe is a construction method of the steel pipe loop structure, characterized in that the production. The method of claim 1, The propulsion facility for propelling the guide steel pipe, the propulsion rail of the H-beam, a push rod for pushing the guide steel pipe, and a propulsion hydraulic jack for pushing the push rod of the steel pipe loop structure of the Construction method. The method of claim 8, The rod is divided by 1m by the construction method of the steel pipe loop structure, characterized in that used in combination according to the propulsion length. The method of claim 1, In the step of manufacturing the steel pipes of the general section sequentially connected to the center of the guide center steel pipe, the steel pipes of the general section are produced so that the lead pipe having a certain length, and the propulsion pipes having a certain length are connected horizontally as a connection ring Construction method of the steel pipe loop structure, characterized in that. The method according to claim 1 or 10, The steel pipe loop construction method of claim 1, wherein a horizontal groove for inserting the angle of the steel pipe to be connected to the steel pipe to be inserted into a slide type is formed on the side of the general section, and the angle is fixed to the other side. The method of claim 11, The reinforcing plate is fixed to the inside of the horizontal groove, the support between the reinforcing plate is fixed, the construction method of the steel pipe loop structure, characterized in that the manufacturing to have a rigid to earth pressure due to the horizontal groove. The method of claim 10, The length of the lead pipe is 1m, the length of the remaining propulsion pipe is a construction method of the steel pipe loop structure, characterized in that the production. The method of claim 1, The propulsion facility for propelling the steel pipe of the general section includes a propulsion rail made of an H beam, a push rod for pushing the guide center steel pipe, and a propulsion hydraulic jack for pushing the push rod. Construction method. The method of claim 14, The rod is divided by 1m by the construction method of the steel pipe loop structure, characterized in that used in combination according to the propulsion length. The method of claim 1, In the state where the guide center steel pipe and the steel pipes of the general section are pushed and pushed by the propulsion facility, a communication groove is formed between the angles of the steel pipes, and the steel pipes connected by using the communication groove are connected and fixed by reinforcing bars. Construction method of a steel pipe loop structure, characterized in that to increase the binding force. The method of claim 1, In the step of excavating the interior of the steel pipe loop structure formed by the guide-centered steel pipe and the general section steel pipes, after excavating a portion primarily from the top, to support the earth pressure load by installing horizontal support, vertical support and inclined support, Construction method of a steel pipe loop structure, characterized in that the secondary excavation to the remaining portion gradually.

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