KR101662058B1 - Under-ground structure construction method using precast concrete member - Google Patents

Under-ground structure construction method using precast concrete member Download PDF

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Publication number
KR101662058B1
KR101662058B1 KR1020160011321A KR20160011321A KR101662058B1 KR 101662058 B1 KR101662058 B1 KR 101662058B1 KR 1020160011321 A KR1020160011321 A KR 1020160011321A KR 20160011321 A KR20160011321 A KR 20160011321A KR 101662058 B1 KR101662058 B1 KR 101662058B1
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South Korea
Prior art keywords
wall
base
press
slab
members
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KR1020160011321A
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Korean (ko)
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안창일
Original Assignee
(주)서현컨스텍
안창일
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/005—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by forcing prefabricated elements through the ground, e.g. by pushing lining from an access pit
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04—Lining with building materials
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04—Lining with building materials
    • E21D11/08—Lining with building materials with preformed concrete slabs
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D13/00—Large underground chambers; Methods or apparatus for making them
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

The present invention relates to a construction method of a non-excavated underground structure using a precast concrete (PC) member, which previously manufactures PC members on the basis of the construction cross section of an underground structure, successively slides the PC members to be inserted into the ground, and then integrates the PC members in a vertical direction to construct the underground structure. Sliding pads are installed in sliding grooves of wall PC members and slab PC members slid and inserted into the ground. Sliding groove inserts corresponding to the sliding grooves are inserted into the sliding pads to allow the bottom surface thereof to be slid on the top surface of the sliding pads by frictional force.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of constructing a UNDER-GROUND STRUCTURE CONSTRUCTION METHOD USING PRECAST CONCRETE MEMBER,

The present invention relates to a method of constructing a non-installation type underground structure manufactured using a PC member. More specifically, a PC member is preliminarily manufactured on the basis of the cross section of the final underground structure, the PC member is sequentially slid in the ground and press-fitted, and then the PC member is integrally formed with the PC member, And a method of constructing the structure.

As a typical example of the non-installation method in the conventional tunnel construction method, there is a case pulling method and a pipe loop method.

The above-mentioned conventional jacket pulling method is a method of pushing a jacket into a construction site by using a hydraulic jack after manufacturing a concrete jacket, and it is easy to modify the orbit, and the quality of the concrete jacket can be easily controlled and accurate construction is possible .

However, since the shear section is precast concrete, it is impossible to change the direction or change the slope during towing of the enclosure. As the size of the enclosure increases, the towing is restricted and the workplace is large. It is difficult to work and the soil is liable to be lost at the edge of the casing in the traction process and if there is insufficient connection between the casings, there is a possibility of water leakage. In order to pull the load of the casing and the hollow body, It is pointed out that there is a fear that a settlement of the earth-moving structure may occur due to the gap.

The pipe roof structure method developed to solve the problem of the above-mentioned mortar pulling method includes a step of installing a propulsion facility at a viewpoint and pushing and pushing a guide steel pipe using a propulsion facility; A step of fabricating general sections of steel pipes sequentially connected to the guide steel pipe and pushing and pressing the steel pipes using a propulsion facility; Sequentially drilling the inside of the steel pipe loop structure formed by the guide steel pipe and the general steel pipe, and constructing the support bars; And a step of spraying a mortar spray with a reinforcing bar on the inside of the steel pipe loop structure or placing a concrete by placing a concrete mold on the structure.

However, there is a problem that the construction of the steel pipe loop structure is complicated and the air is long because the parallel beam, the support beam, and the inclined beam are separately installed for the crushing work after the installation of the steel pipe loop structure.

Therefore, it is possible to shorten the air required for the installation by easily joining and disassembling the tubular structure to be press-fitted therewith, and it is structurally robust and stable even without a supporting structure such as a supporting beam A method of constructing an underground tunnel can be provided, and a method of constructing an underground tunnel that does not require the installation of a scaffold such as a formwork or a tramp for installing a structure has been introduced.

That is, as shown in FIG. 1, a method of constructing a tunnel composed of a slab 10 and a wall 20 supporting the slab 10,

The slab 10 is constructed by inserting a reference square pipe into the ground, inserting a connected square pipe into the ground to the left and right of the reference square pipe to form a rectangular pipe composite 40 for a slab, Inserting a slab support structure 41 made of steel into a horizontal space inside the rectangular tube composite for slabs, curing the concrete after placing the concrete in the horizontal space into which the support structure is inserted;

The wall 20 is constructed by inserting a plurality of rectangular pipes including a connected rectangular pipe into the lower part of the rectangular pipe composite 40 for slabs formed by the reference rectangular pipe 10 and the connected rectangular pipe 20 Thereby forming a square tube composite 50 for a wall; inserting a wall support structure 51 made of steel into a vertical space inside the square tube composite 50 for the wall; Pouring the concrete into the space, and curing the concrete;

When the construction of the slab 10 and the wall 20 is completed, the inside of the slab 10 and the wall 20 is pushed out, the bottom concrete C is laid, and the inside of the tunnel is closed .

However, the support structure 41 for the slab and the support structure 51 for the wall, which are made of steel, are separately manufactured and provided in a manner that they are inserted into the rectangular tube composite 40 for slabs and the rectangular tube composite 50 for walls It is not necessary to install scaffolds such as formwork and tramway for installation of the structure, but the problem arises that the actual construction becomes more complicated.

The slab 10 is first installed and the wall 20 is installed at both ends of the slab 10. This is for supporting the earth surface pressure by the slab, and is a rectangular tube composite 40 for a slab for an actual slab 10 ) Is supported by the rectangular pipe-tube composite body 50 for the wall. In this method, in the method of constructing the underground structure by the non-adherent method, the load by the rectangular tube composite body 40 for slab is applied to the square- It is not efficient in that it is a structure that the support member 50 supports.

Accordingly, the present invention provides a method of constructing an underground structure in a non-adhering manner by first forming a PC member in a cross-sectional shape of an underground structure and pressing it into the ground, wherein the base portion, the wall portion, and the slab PC member can be sequentially stably installed The present invention has been made in view of the above problems, and it is an object of the present invention to provide a method of constructing a non-installation type underground structure using a PC member capable of overcoming the disadvantages while making the advantages of the pull-

To this end,

(a) A base PC member, a wall PC member and a slab PC member are prepared in advance on the basis of the sectional shape of the final underground structure (A), and as the both base portions A1 of the final underground structure (A) Pressing the base PC member in the longitudinal direction first at the viewpoint; (b) press-fitting the wall portion PC members along the upper surface of the base portion PC member, which is first press-fitted as the wall portions A2 of the final underground structure (A), and then integrating the wall portion PC components; And (c) longitudinally slidably pressing the slab portion A3 of the final underground structure (A), the slab PC member 130 extending transversely between the upper surfaces of the uppermost wall portion PC members In addition,

The slidable grooves of the base PC member, the wall PC member, and the slab PC member are press-fitted into the sliding grooves of the grooved grooves, and the sliding groove grooves corresponding to the sliding grooves are inserted, The present invention provides a method of constructing a non-attachment type underground structure made by using a PC member made to slide by friction force on an upper surface of a sliding pad.

Since the PC member according to the cross section of the underground structure is manufactured in the factory, it is not required to construct the temporary construction member such as the steel pipe loop or the steel pipe structure, and the quality It is easy to manage and it is possible to utilize the PC member having various sectional sizes by adopting the press-in method which is easy to slide even if its own weight is large,

Since each PC member is constructed while ensuring structural integrity, it is possible to minimize the influence on the PC members that are press-fit by the PC members that are sequentially press-

PC members are not required to have any additional problems such as internal excavation after press fitting and PC members can have sufficient watertightness and exponential treatment both before and after press fitting and there is no fear of leaking and the slab PC member is close to the ground surface It is possible to provide a method of constructing a non-installation type ground structure using a PC member that is quicker and more economical.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing the construction of an underground structure of a non-
2A is a construction cross-sectional view of an underground structure (A) according to the present invention,
2B and 2C are diagrams showing the PC member and the press-in method of the underground structure (A) according to the present invention,
3A, 3B, 3C, and 3D are flowcharts of a method of constructing a non-installation type underground structure manufactured using the PC member of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

[The underground structure (A), PC member 100 and PC member indentation system according to the present invention]

FIG. 2A is a construction cross-sectional view of an underground structure (A) according to the present invention, and FIGS. 2B and 2C show a PC member and a press-in method of an underground structure (A) according to the present invention.

First, the PC member 100 includes a base PC member 110, a wall PC member 120, and a slab PC member 130 as shown in FIG. 2A.

The base PC member 110 is for constructing both base portions A1 of the final ground structure A and may be manufactured in advance in the form of the base portion of the final underground structure in the factory. Only the extension length L is determined for press-fitting into the ground in the longitudinal direction (press-in direction).

As shown in FIGS. 2A and 2B, the foundation PC member 110 is a reinforced concrete precast member. Therefore, the foundation PC member 110 is made of a hollow pipe section for reduction of weight and internal excavation, Able to know.

This is to effectively support the load of the wall PC member 120 since the wall member PC member 120 to be described later is press-fitted on the upper surface.

In addition, various indexes and waterproof means can be used to prevent leaking in the connected state of the base PC member 110, so that usability and durability can be sufficiently secured when the underground structure is completed.

This is because the base PC member 110 is manufactured by the pre-casting method, and thus the exponent and waterproofing means of the precast reinforced concrete member that is continuously connected can be used as it is. Since the concrete is laid in the hollow portion, the problem of leakage can be basically solved.

As shown in FIG. 2B, the base PC member 110 has a plurality of vertical connection holes 111, which are in communication with the vertical connection holes 121 of the PC member 120 A connecting member 150 such as a connecting reinforcing bar can be penetrated,

So that the base PC member 110 and the wall PC member 120 can be structurally integrated with each other using the connecting member 150.

That is, the present invention minimizes the influence of the wall PC member 120 which is press-fit sequentially through the operation of structurally integrating the press-fitted base PC member 110 and the wall PC member 120 first .

Since the pushing of the base portion PC member 110 requires the greatest thrust force, a guide rail member 170 is previously installed in the lower portion of the position where the base portion PC member 110 is press-fitted, And the like.

As shown in FIG. 2A, the wall part PC member 120 is used for constructing the wall part A2 of the final underground structure A and also the wall part of the final underground structure at the factory is manufactured in advance . Only the extension length is fixed for press-in to the ground in the longitudinal direction.

One wall PC member 120 is press-fitted on the upper surface of the base PC member 110, and the upper surface of the wall PC member 120 is press- In which a plurality of wall PC members 120 are press-fitted.

Conventionally, such a push-in method utilizes a separate pushing-in method by a propulsion device (propelling jack) in the ground, but the present invention adopts the surface contact sliding method.

That is, as shown in FIGS. 2B and 2C, since the base PC member 110 and the wall PC member 120 are formed in a rectangular cross-section in the cross-sectional shape of the underground structure, a frictional force is generated at the time of indentation into the ground.

The present invention is characterized in that a sliding groove 210 is formed in a base PC member 110 and a wall PC member 120 which are in contact with each other and a sliding pad 210 such as a Teflon plate is formed in the sliding groove, The base PC member 110 and the wall PC member 120 and the wall PC member 120 and the wall PC member 120 are guided by the sliding groove 210, And is pressed and inserted while being slid by the sliding pad 220.

In this case, when the base PC member 110 and the wall PC member 120 are manufactured from a hollow tube member having a rectangular cross-section, even if the load increases, it is possible to press-fit while stably sliding in a desired direction.

2B and 2C, it can be seen that the sliding pads 220 are installed in the sliding groove 210 of the grooved groove type formed on the upper surface of the base PC member 110, And a sliding groove insertion port 230 corresponding to the sliding groove 210 is formed on the bottom surface.

Accordingly, it can be understood that the sliding slot is guided by the sliding slot and can be slid by the sliding pad 220 installed in the sliding slot and press-fitted.

At this time, the depth of the sliding groove and the thickness of the sliding pad are adjusted so that the upper surface of the base PC member 110 and the bottom surface of the PC member 120 of the wall part form a slight gap to facilitate sliding, 150).

At this time, as shown in FIG. 2A, an expansive index material 160 such as a water-swellable index material or the like is further provided on the upper surface of the base PC member 110 so that infiltration water or the like does not permeate (securing watertightness) after the construction.

Further, the slab PC member 130 is for constructing the slab portion A3 of the final underground structure A as shown in FIG. 2A, and may also be a slab shape of the final underground structure in the factory in advance. Also, the length of the extension is determined only for press-in to the ground in the longitudinal direction.

It can be seen that the slab PC member 130 can be slid and pushed in by the sliding pads 220 provided at the sliding grooves formed at the upper surface of the two-wall PC member 120 at both ends.

That is, as shown in FIGS. 2B and 2C, the slab PC member 120 and the slab PC member 130, which are slidably pressed into the slab PC member 120, are provided with sliding pads 220 in the slidable groove 210, The sliding groove inserting hole 230 corresponding to the sliding groove 210 is inserted so that the bottom surface of the sliding groove inserting hole 230 is slid by the frictional force on the upper surface of the sliding pad.

At this time, in particular, in the present invention, the slab PC member 130 is slid in the longitudinal direction so as to correspond to the upper surface of the two-wall portion PC member 120 so as to be press-fitted.

Unlike the base PC member 110 and the wall PC member 120, the slab PC member 130 is not made of a hollow tube member but is made of a solid cross-sectional member, so that no separate connecting material and concrete are laid .

As described above, according to the present invention, the base PC member 110, the wall PC member 120, and the slab PC member 130 are manufactured to press the both base PC members 110 first, The PC member 120 is slid on the upper surface of each base PC member 110 and press-

The base PC member 110, the wall PC member 120, and the wall PC member 120 are first integrated with each other using the connecting material 150 and the concrete.

That is, after the base PC member 110 and the wall PC member 120 are press-fitted, the concrete C is poured and cured into the inner core of the base PC member 110 and the wall PC member 120 (Together with fixing nuts or the like) are connected to each other structurally by using the connecting material 150 through the sheaths 112 (securing the connecting material inserting spaces) which are preliminarily installed (after press-fitting). So that it is possible to effectively support the working load by the wall member PC member 120 to be press-fitted later. This is disclosed in Fig. 2A as a first fastening.

Also, the wall member PC members 120, which are press-fitted into the wall member 120, are also structurally integrated with the wall member PC members 120 by connecting the concrete member C with the joint member 150 using sheaths do. 2A, the number of fastening times is determined according to the number of indentations of the PC members 120 on the wall.

The slab PC member 130 is slid on the upper surface of the uppermost wall portion PC member 120 and press-

The inner space of the base PC member 110, the wall PC member 120 and the slab PC member 130 is excavated without a separate description and a bottom plate 140 is installed between both base PC members 110 Thereby completing the final unfrozen underground structure (A).

[Method of constructing a non-installation type underground structure manufactured using a PC member according to the present invention]

FIGS. 3A, 3B, 3C and 3D are flowcharts showing a method of constructing a non-installation type underground structure using a PC member according to the present invention.

First, the underground structure (A) is constructed so as to have a certain depth from the surface of the ground. The underground structure (A) is a reinforced concrete structure having a constant sectional shape such as a tunnel.

The base part, the wall part, and the slab PC members 100 (110, 120, and 130) are manufactured in accordance with the cross-sectional shape of the underground structure A and are pressed into the end part by using a propelling jack at the view point. Is manufactured as a hollow pipe member except for the slab PC member 130, and is installed while being excavated inside.

At this time, the viewpoint portion and the endpoint portion are prepared by providing a temporary structure that can be installed in the work space and the propulsion jack, and the viewpoint portion and the endpoint portion are not different from the usual non-attached structure construction method.

Since the press-in of the PC member at the view point portion and the end point portion is performed in the ground, the PC member 100 to be press-fitted is also adjusted to the size that can be press- .

As shown in FIG. 3A, first, the base PC member 110 constituting the cross section of both base portions A1 of the underground structure A is manufactured in advance and brought into the viewpoint portion. And is pressed toward the end portion.

At this time, it can be seen that the base PC member 110 is a hollow tube PC member having a rectangular cross section having a width larger than the sectional height, and that the vertical connection hole 111 is formed.

That is, according to the present invention, the base PC member 110 constituting the cross section of both base portions A1 of the underground structure A is first press-fitted, because the wall member PC member 120 to be press- And is structured to be integrated with the wall part PC member 120 by using the concrete C and the connecting material 150 to ensure more stable construction.

Therefore, the present invention differs from the conventional method of pulling a roof or a steel pipe from a portion close to the ground surface in the case of a jacket pulling method and a pipe loop method, and then constructing a loop structure first and then constructing an actual underground structure in the lower ground have.

At this time, since the base PC member 110 has an extended length in the longitudinal direction, the base PC member 110 serving as a lead pipe is firstly installed, and then the base PC member 110, And then press-fitting them in succession.

The base PC member 110 serving as a leading pipe is provided with means such as forming a wedge-shaped support member at the upper end so as to prevent the front ground from sinking at the time of press-fitting. do.

In addition, the connection of each base PC member 110 is performed by using the connecting method of the reinforced concrete member in advance at the viewpoint portion, but also exponent means is used so as not to cause leakage or the like on the connecting portion. So that the exponential problem can be solved in the longitudinal direction.

At this point, the base station PC member 110 follows the indentation method by internal excavation as it is without pushing in the sliding method using the sliding groove and the sliding pad shown in FIG. 2B.

At this time, the sleeve 113 is embedded in advance so that the lower end of the coupling member 150 can be fastened in the inner heavy load.

Also, as shown in FIG. 2A, the guide rail member 170 is firstly installed to easily press-fit the base PC member 110.

Next, as shown in FIG. 3B, when the foundation PC members 110 are completed from the viewpoint to the end point in the form of a cross section of the underground structure, both base portions of the underground structure A are constructed first.

The base PC member 110 is inserted into the base PC member 110 from the upper surface of the base PC member 110, And also serves as a reference tube which can be press-fit in a sliding manner using the groove 210 and the sliding pad 220.

Since the sliding method utilizes the frictional force due to the self weight of the wall part PC member 120, the construction of the base part PC member 110 is performed first.

2B, the wall part PC member 120 which has been inserted into the not shown vertical hole has a sliding groove 210 formed on the upper surface of the base PC member 110 and a sliding pad 210 provided on the sliding groove 210 The sliding groove inserting hole 230 is inserted into the sliding groove and guided while being slid by the sliding pad 220 and press-fitted to the end point portion from the view point portion.

At this time, the sliding slot 230 inserted in the sliding groove 210 is constrained in the lateral direction to effectively resist the shearing force and guide the press-fit of the wall PC member 120.

In addition, the sliding pad 220 significantly reduces the pressing resistance of the wall PC member 120, facilitates internal excavation, and secures promptness of press-fitting by the driving jack.

When the wall PC member 120 is firstly completely press-fitted into the upper surface of the base PC member 110, the base PC member 110 supports the wall PC member 120, The sectional size of the secondary PC member 110 is larger than the sectional size of the PC member 120 of the wall portion 120 to secure the supporting ability of the primary PC member 110 according to the load support of the wall portion PC member 120 .

At this time, the expansive exponent 160 is positioned at a portion where the base PC member 110 and the wall PC member 120 are in contact with each other.

Next, the base PC member 110 and the wall PC member 120 are structurally integrated with each other. As described above, the connection member 150 can be inserted through the vertical connection holes 111 and 121 of the base PC member 110 and the wall PC member 120, The PC member 110 and the wall PC member 120 are first structurally integrated with each other.

That is, in order to embed the sheath 112 in which the concrete poured into the internal heavy load is removed in the base part PC member 110 and the wall part PC member 120 as shown in FIG. 2A, The lower end of the connecting member 150 having a length capable of working in the working space due to the internal twisting is fastened to the sleeve 113 of the base part PC member 110 through the sheath 112, The connecting member 150 is moved from the sleeve 113 of the base PC member 110 to the upper vertical through hole 111 of the base PC member 110 and the lower vertical through hole 121 to extend through the upper vertical through-hole 121 of the wall PC member 120. The concrete C and the connecting member 150 structurally integrate the base PC member 110 and the primary wall PC member 120 together.

Thus, the wall PC member 120 and the base PC member 110 can minimize the influence of twisting, position change, or the like due to the additional press-fitting of the wall PC member 120.

After the wall member 120 is first press-fitted, the secondary member 120 is further laminated on the ground structure A in a cross-sectional shape.

The connecting member 150 extending to the inside of the primary wall PC member 120 is connected to the additional connecting member by using a coupler (not shown), and the additional connecting member is connected to the inside The connecting member 150 is additionally connected and fixed to the car wall part PC member 120 via the sheath 112 to structurally integrate the first and second wall part PC members with each other.

In FIG. 3B, it can be seen that the wall portion of the underground structure A is constructed of the two lower wall PC members 120. However, while pushing the at least two wall PC members 120 into the wall PC member 120 120 are integrated with each other by using the concrete and the connecting material 150.

2A and 3C, the PC member 120 of the uppermost wall part is formed by a slab support block 122 on the upper surface, It can be understood that the formed material is press-fitted.

As a result, both the base portion A1 and the wall portion A2 of the underground structure A are structurally integrated with the base portion PC member 110, the wall portion PC member 120, and the concrete C, .

Next, as shown in FIG. 3C, the slab PC member 130 is press-fitted into the upper surface of the uppermost wall PC member 120.

The slab PC member 130 is a PC member corresponding to a slab of the underground structure A, and can be integrally press-fitted into the slab PC member 130 without being divided in the lateral direction.

A sliding groove and a sliding pad formed on the upper surface of the uppermost wall portion PC member 120 on which the slab support block 122 is formed are used and both end portions of the slab PC member 130 are formed with sliding insertion holes, Indentation becomes possible.

The slab PC member 130 is made of a solid PC member instead of a hollow pipe member, and is also press-fitted into the end portion of the slope PC member 130 from the viewpoint to the end point. The inner space of the member 120 is partially excavated to secure a work space.

At this time, the uppermost wall portion PC member 120 is not installed with the connecting material 150 but only the concrete is installed in the inner wall. This is because it is difficult to secure a work space.

3D, the base PC member 110, the wall PC member 120, and the slab PC member 130 are formed by press-fitting the base PC member 110, the slab PC member 130, , Concrete is poured into the inside of the inside of the wall PC member 120 to complete the final underground structure (A).

Next, the inner ground of the completed underground structure A is downwardly stepwise excavated to complete the final underground structure and the bottom plate concrete is placed between the base PC members 110 to construct the bottom plate 140, It is completed. Such an underground structure (A) is subject to follow-up work such as a tunnel structure, an underground driveway, and other additional packaging depending on the use.

The slab PC member 130 may be formed in an arch shape.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: PC member 110: base PC member
111: Vertical connection hole 112: Sheath
120: wall member PC member
121: vertical connection hole 122: slab support block
130: Slab PC member
140: bottom plate 150: connecting member
160: Expansive index material
170: Guide rail member

Claims (8)

(a) The base PC member 110, the wall PC member 120, and the slab PC member 130 are manufactured in advance on the basis of the sectional shape of the final ground structure A, As both base portions A1, first pushing both base PC members 110 in the longitudinal direction first at the viewpoint;
(b) press-fitting the wall portion PC members 120 along the upper surface of the base portion PC member 110 which is first press-fitted as the wall portions A2 of the final ground structure A, and then integrating the wall portion PC members 120 up and down; And
(c) longitudinally sliding the slab portion A3 of the final underground structure (A) into the slab PC member 130 extending transversely between the upper surfaces of the uppermost wall portion PC members 120; / RTI >
In the steps (a) to (c)
The sliding pads 220 are installed in the sliding grooves 210 of the recessed grooves so as to be press-fit into the base PC member 110, the wall PC member 120 and the slab PC member 130, The sliding groove insertion port 230 is inserted into the sliding groove insertion hole 230 so that the bottom surface of the sliding groove insertion hole 230 slides on the sliding pad by frictional force. The upper surface of the base PC member 110 and the bottom surface of the wall PC member 120 are formed to have predetermined clearances so that the clearance is canceled by the connecting member 150 after press-
In the step (b), the step of press-fitting the wall PC members 120 along the upper surface of the press-fitted base PC member 110,
The primary wall PC member 120 is first slid in the longitudinal direction along the upper surface of the press-fitted base PC member 110 and press-fit the primary wall PC member 120 into the primary PC member 110 and the primary wall PC member 120 The concrete is laid so that the sheath 112 is buried in the inner wall of the main body PC member 110 and the first and second wall PC members 120 and 120 are moved upward and downward And connecting them to each other so as to integrate the upper and lower parts together. delete delete The method according to claim 1,
The additional wall PC member 120 is longitudinally slid and press-fit along the upper surface of the primary wall PC member 120 so that the primary wall PC member 120 and the additional wall PC member 120 The concrete is laid so that the sheath 112 installed in the inside of the building is embedded and the upper and lower parts are connected to each other using the connecting material 150 installed to penetrate the sheath, And integrating the upper and lower PC members (120) with each other up and down with respect to each other. The method according to claim 1,
In the step (a), both the base PC member 110 and the wall PC member 120 are formed into a square hollow tube having a cross-sectional size larger than the cross-sectional size of the wall PC member 120, A method of constructing a non-installation type underground structure using a PC member manufactured to secure the support capability of the base PC member (110) in accordance with load support. The method according to claim 1,
After the step (c)
The ground PC member 110 and the slab PC member 130 are completed and the inside of the ground structure A is excavated and the ground PC member 110 A method of constructing a non-attachment type underground structure using a PC member to further form a bottom plate (140). The method according to claim 1,
In the steps (b) and (C)
The inflating index member 160 is further provided on the upper surface of the base PC member 110 and the wall PC member 120 and the inflating water is not infiltrated after the installation. Construction method of structure. The method according to claim 1,
The method according to any one of the preceding claims, wherein the base PC member (110) of the step (a) is manufactured using a PC member to be press-fitted using a guide rail member (170)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006233683A (en) * 2005-02-28 2006-09-07 Oriental Construction Co Ltd Prestressed concrete roof girder, its press-fitting method, and structure crossing under base course using prestressed concrete roof girder
KR20100012939A (en) * 2008-07-30 2010-02-09 평산에스아이 주식회사 Position adjustable fixing structure for corrugated multi plate
KR100971200B1 (en) * 2009-11-13 2010-07-20 (주)서현컨스텍 Precast box structure construction method using steel connection member
KR101011969B1 (en) * 2010-10-11 2011-02-01 안창일 Precast box structure construction method using sliding apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006233683A (en) * 2005-02-28 2006-09-07 Oriental Construction Co Ltd Prestressed concrete roof girder, its press-fitting method, and structure crossing under base course using prestressed concrete roof girder
KR20100012939A (en) * 2008-07-30 2010-02-09 평산에스아이 주식회사 Position adjustable fixing structure for corrugated multi plate
KR100971200B1 (en) * 2009-11-13 2010-07-20 (주)서현컨스텍 Precast box structure construction method using steel connection member
KR101011969B1 (en) * 2010-10-11 2011-02-01 안창일 Precast box structure construction method using sliding apparatus

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