KR101107567B1 - Joining device of beam structure and vertical steel member for RC structure reverse drilling method, dedicated support frame and construction method using same - Google Patents

Abstract

형상의 영구보거푸집을 설치하는 단계(S40)와, 상기 영구보거푸집의 상부 양 끝단에 데크플레이트를 설치하고 상기 영구보거푸집을 지지수단으로 지지하는 단계(S50)와, 층간구조체 콘크리트를 타설 및 양생하는 단계(S60)로 이루어지며, 지하 2층 이하에서는 상기 지하 1층 층간구조체 시공의 각 단계를 반복 실시하여 지하층 층간구조체 시공을 완료한 후 기초공사, 외벽 및 잔여 골조공사를 상향식으로 시공하는 단계를 포함하는 것을 특징으로 한다.
또한 본 발명은, 수직 강재부재와 보구조체를 연결하는 접합장치와;

형상의 영구보거푸집을 지지하는 전용지지틀이 제공되는 것을 특징으로 한다.
본 발명에 따른 효과는 다음과 같다.

형상의 영구보거푸집을 이용함으로써 가설작업 일부를 생략할 수 있을 뿐 아니라, 보의 크기를 줄일 수 있고, 수직 강재부재와 보구조체의 접합장치를 통해 철근콘크리트 보구조체 단부의 강도를 향상시킬 수 있고,

형상의 영구보거푸집의 하부에 전용지지틀을 사용함으로써 상부에서의 행잉지지와 하부에서의 서포트지지가 모두 가능하다. 행잉지지하는 경우, 양생이 완료되어 충분한 강도가 발현되는 격층의 상부 보구조체에서 지지토록 함으로써 보다 안정적인 지지구조를 확보할 수 있다.The present invention relates to a top down method for RC (Reinforced Concrete) structures, which can improve the construction efficiency while solving the problems of the conventional reverse drilling method. It relates to a joining device for the vertical steel member.
The present invention promotes economical and efficient construction, such as shortening the air and reducing the temporary materials cost by reducing the work maneuver, and facilitating the connection between the vertical steel member and the beam structure by using a specific joining device. Promotes strength and provides a support frame that can change the support method for loads such as beam structures and slabs according to site conditions so that the loads on beam structures and slabs are safely supported until the required strength occurs after concrete placement. It aims to do it.
In order to solve the above technical problem, the present invention, the interlayer structure of the first floor above the ground (S1) for constructing the wall and the construction, the step of constructing a vertical steel member for the inner column inside the wall (S2), Step (S3) to excavate the inside of the retaining wall to a predetermined depth, step (S4) for installing the beam structure connecting the retaining wall and the vertical steel member, and installing the deck plate on both ends of the upper structure of the interlayer Comprising the step of placing and curing the structural concrete (S6), the interlayer structure of the basement floor 1 is the step (S30) to excavate the inside of the retaining wall to a predetermined depth, and connecting the retaining wall and the vertical steel member

Installing permanent formwork of the shape (S40), the step of installing deck plates on both ends of the upper end of the permanent formwork and supporting the permanent formwork as a support means (S50), and placing the interlaminar concrete Curing step (S60), the second floor below the ground to repeat the steps of the construction of the first floor interlayer structure to complete the construction of the basement floor interlayer structure after the construction of the foundation work, the outer wall and the remaining frame construction from the bottom up Characterized in that it comprises a step.
In another aspect, the present invention, the joining device for connecting the vertical steel member and the beam structure;

Characterized in that a dedicated support frame for supporting the permanent formwork of the shape is provided.
Effects according to the present invention are as follows.

By using the permanent formwork of the shape, not only part of the construction work can be omitted, but also the size of the beam can be reduced, and the strength of the end of the reinforced concrete beam structure can be improved through the joining device of the vertical steel member and the beam structure. ,

By using a dedicated support frame at the bottom of the permanent permanent mold of the shape, both hanging support at the top and support support at the bottom are possible. In the case of hanging support, more stable support structure can be secured by supporting the upper structure of the diaphragm where curing is completed and sufficient strength is expressed.

Description

Forging method of RC structure, the connecting devices between beam structure and vertical steel material, the supporting structures of exclusive use , and the construction method using these devices.}

The present invention relates to a top down method of a reinforced concrete (RC) structure. More specifically, the reversal method of the RC structure that can improve the construction efficiency while solving the problems of the conventional reverse drilling method in which the members of the horizontal temporary member, the vertical club, etc. must be installed and dismantled, and the beam structure used vertically The present invention relates to a joining device for steel members.

Reverse method is the method of constructing the underground part of the building from top to bottom, and it can be installed in parallel with the ground work to be constructed from the bottom up, so it can shorten the air and have less noise and vibration. In particular, the reverse construction of the interlayer structures (beams and slabs) in the underground part of the building with reinforced concrete can be called the RC structure reverse construction method.

In general, the RC structure reversal method requires the construction of formwork for placing concrete such as beams, and forgings for supporting it. The conventional reverse drilling method proceeds by first laying the ground to a predetermined depth and installing the formwork of the beams and slabs and the copper bar for supporting the same in the state of flattening the pit ground, and then placing concrete. In this construction method, it is necessary to perform floor leveling on every floor for stable support of the club, and to repeatedly install and dismantle the club and formwork. In other words, the conventional RC structure reverse drilling method requires a lot of temporary materials and workload, which increases construction cost and limits air shortening due to inefficient work progress.

On the other hand, the conventional method of joining the beam structure to the vertical steel member is not easy to place due to the joint part of the beam when the concrete is poured upward from the vertical steel member. There was a problem that the joint with the concrete may become unstable.

The present invention has been developed to solve the above problems with the conventional RC structure reverse drilling method, to significantly reduce the construction cost and air, and to build a more structurally secure underground structure.

First, the present invention is to provide a construction method that can omit the construction work for the formwork of the beam structure and the slab. Providing such technical means not only shortens the work time, but also reduces the cost of temporary construction materials, thereby enabling economic and efficient construction.

Next, the present invention is to facilitate the work by using a specific bonding device in connecting the reinforced concrete beam structure to the vertical steel member and to improve the strength of the joint.

In another aspect, the present invention is to provide a dedicated support frame that can change the support method for loads such as beam structures and slabs depending on the site conditions. The dedicated support frame allows to safely support the load on the beam structure and the slab until the required strength after the concrete is placed for all the various construction sites.

형상의 영구보거푸집을 설치하는 단계(S40)와, 상기 영구보거푸집의 상부 양 끝단에 데크플레이트를 설치하고 상기 영구보거푸집을 지지수단으로 지지하는 단계(S50)와, 층간구조체 콘크리트를 타설 및 양생하는 단계(S60)로 이루어지며, 지하 2층 이하에서는 상기 지하 1층 층간구조체 시공의 각 단계를 반복 실시하여 지하층 층간구조체 시공을 완료한 후 기초공사, 외벽 및 잔여 골조공사를 상향식으로 시공하는 단계를 포함하는 것을 특징으로 한다. In order to solve the above technical problem, the present invention, the interlayer structure of the ground layer 1 is the step (S1) for constructing the wall of the mud wall, and the vertical steel member for the inner column inside the wall of the mud wall (hereinafter referred to as 'vertical steel member') Construction step (S2), and step (S3) to excavate the inside of the retaining wall to a predetermined depth, and (S4) to install a beam structure connecting the retaining wall and the vertical steel member (S4), Installing deck plates at both ends and placing and curing the interlaminar concrete (S6), the interlayer structure of the basement floor of the first step to pit the inside of the wall to a predetermined depth (S30), and the wall To connect the vertical steel member

Installing permanent formwork of the shape (S40), the step of installing deck plates on both ends of the upper end of the permanent formwork and supporting the permanent formwork as a support means (S50), and placing the interlaminar concrete Curing step (S60), the second floor below the ground to repeat the steps of the construction of the first floor interlayer structure to complete the construction of the basement floor interlayer structure after the construction of the foundation work, the outer wall and the remaining frame construction from the bottom up Characterized in that it comprises a step.

형상의 영구보거푸집을 지지하는 전용지지틀이 제공되는 것을 특징으로 한다.In another aspect, the present invention, the joining device for connecting the vertical steel member and the beam structure;

Characterized in that a dedicated support frame for supporting the permanent formwork of the shape is provided.

The present invention can expect the following effects as the above technical means are provided.

형상의 영구보거푸집을 이용함으로써 거푸집을 설치하고 이를 다시 해체하여야 하는 가설작업을 생략할 수 있을 뿐 아니라,

형상의 영구보거푸집이 구조재로써의 역할을 할 수도 있어 보의 크기를 줄일 수 있다.First, the present invention

By using the permanent formwork of the shape can not only omit the construction work to install the formwork and dismantle it again,

The permanent formwork of the shape can also serve as a structural material can reduce the size of the beam.

형상의 영구보거푸집을 사용함으로써 현장에서의 작업공수를 줄일 수 있어 공기 단축과 비용절감의 효과가 있다.Second, the present invention is manufactured in a state that finished reinforcement in advance in the factory

By using the permanent formwork, it is possible to reduce the labor in the field, which has the effect of shortening the air and reducing the cost.

Third, the present invention can improve the strength of the end of the reinforced concrete beam structure through the joining device of the vertical steel member and the beam structure, and when the mesh is formed on the blocking member of the joining device the end of the beam structure in the future Ensure a perfect joint with the column.

형상의 영구보거푸집의 하부에 전용지지틀을 사용함으로써 상부에서의 행잉지지와 하부에서의 서포트지지가 모두 가능하여, 현장여건에 따라 지지방식을 변경하는 것이 용이해진다.Fourth, the present invention

By using a dedicated support frame at the bottom of the permanent permanent mold of the shape, both the hanging support at the top and the support support at the bottom are possible, and it is easy to change the support method according to the site conditions.

Fifthly, the present invention can secure a more stable support structure by supporting the upper structure of the diaphragm where curing is completed and sufficient strength is expressed in the case of hanging support.

형상의 영구보거푸집 우각부를 보강가새로 보강한 종단면도이고, 5b는 도 5a의 A-A'에서 바라본

형상의 영구보거푸집의 횡단면도이다.
도 6는 본 발명의 전용지지틀을 서포트로 지지하는 모습의 단면도이다.
도 7a는 매입철물이 설치된 철근콘크리트 층간구조체의 단면도이고, 7b는 슬리브가 설치된 철근콘크리트 층간구조체의 단면도이다.1 is an overall cross-sectional view showing a construction process according to the present invention.
Figure 2a to 2k is a schematic diagram showing the construction process of each step of the RC structure reverse drilling method according to an embodiment of the present invention.
3A to 3D are perspective views of each embodiment showing the joining device of the beam structure and the vertical steel member of the present invention.
Figure 3e is an embodiment of the formwork means used when connecting the beam structure directly to the vertical steel member.
Figures 4a to 4c is a perspective view of each embodiment showing a dedicated support frame of the present invention.
5A is

It is a longitudinal sectional view of reinforcing brace reinforcement brace of the permanent formwork, 5b is viewed from A-A 'of FIG.

Cross-sectional view of permanent formwork.
6 is a cross-sectional view of the support frame of the present invention with a support.
7A is a cross-sectional view of the reinforced concrete interlayer structure in which the embedded steel is installed, and 7b is a cross-sectional view of the reinforced concrete interlayer structure in which the sleeve is installed.

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

형상의 영구보거푸집(40)을 사용하고 이를 행잉로드(80)로 지지함에 그 특징이 있다. 이를 각 단계별로 살펴보면 다음과 같다.
2a to 2k shows the construction sequence of the RC structure reverse drilling method according to the most preferred embodiment of the present invention. The RC structure reverse method

It is characterized by using a permanent formwork 40 of the shape and supporting it with a hanging rod (80). Looking at each step as follows.

A. Ground floor interlayer structure construction

(1) the step of constructing the retaining wall (10)-Figure 2a

It is a step of constructing the earth wall (10) in accordance with the construction line to the outside of the ground where the underground structure is installed. The soil wall 10 may be formed by installing the thumb piles 11 at predetermined intervals and constructing the concrete pillars 12 between the thumb piles 11. In the embodiment of the present invention will be described with respect to the structure of the wall 10 is formed by the thumb pile 11 and the concrete pillar 12 therebetween as described above. However, the earthquake wall 10 applied to the present invention is generally used in earthwork such as a slurry wall, a earthquake wall using a soil plate, a earthquake wall using a sheet pile, etc., in addition to the earth wall of the thumb pile 11 and the concrete pillar 12. It can be applied to all used mud walls.

(2) constructing the vertical steel member 20-Fig. 2b

When the construction of the soil wall 10 is completed, the vertical steel member 20, which is a frame member of the permanent column of the underground structure in the interior space is constructed. The vertical steel member 20 may be any steel member that may be used as a frame member of a pillar such as steel having a box-shaped cross section in addition to the H-shaped steel that is commonly used.

(3) excavating the inside of the retaining wall 10 to a predetermined depth-FIG. 2C

When the construction of the vertical steel member 20 is completed, the internal ground of the retaining wall 10 is excavated to a predetermined depth. The oyster is carried out while considering the stable support state of the retaining wall 10, the depth proceeds so as not to interfere with the subsequent work, such as installing the support beam 14 and the first floor beam structure to be described later.

(4) Installing the Ground Floor Repair Structure-FIG. 2D

The ground first floor beam structure is installed between the retaining wall 10 and the vertical steel member 20 or the vertical steel member 20.

The beam structure of the ground layer 1 may be a reinforced concrete structure as described below in addition to the steel, such as the H-shaped steel member 30, but in the present embodiment because it is advantageous in construction and structural use of the H-shaped steel member 30 It will be described on the basis that the H-shaped steel member 30 is installed.

In the retaining wall 10, the brackets 13 are installed on each of the thumb piles 11 of the retaining wall 10, and the support beams 14 are mounted on the upper surfaces of the brackets 13 so that the support beams 14 are retained. To be formed along the wall (10). One end of the H-shaped steel member 30 is mounted on the support beam 14 and the other end is joined to the vertical steel member 20.

(5) installing the hanging rod 80-FIG. 2E

The H-shaped steel member 30, which is a ground structure of the ground floor, serves as a supporting member during the curing of the interlayer concrete of the first and second floors. Hanging rod 80 is used as the interlayer structure supporting means of the basement 1 and 2 layers. To this end, a fixing plate 51 for installing a hanger is attached to the lower flange of the H-shaped steel member 30. The hanging rod 80 connected to the hanger is provided with a turnbuckle 81 for adjusting the length.

(6) Installation of deck plate 50 and placing and curing of interlayer concrete-Fig. 2f

After the deck plate 50 is installed on the H-shaped steel member 30, concrete is poured and cured to complete the ground floor interlayer structure.

B. Construction of the first floor interlayer structure

(7) excavating the inside of the retaining wall 10 to a predetermined depth-FIG. 2G

In the same way as the construction of the ground floor interlayer structure, excavation is carried out to the required depth below the ground floor.

형상의 영구보거푸집(40) 설치단계 - 도 2h(8) for installing the structure of the basement first floor

Permanent formwork 40 installation step-Fig. 2h

형상의 영구보거푸집(40)을 흙막이 벽체(10)와 상기 수직 강재부재(20), 또는 수직 강재부재(20)들 사이에 설치한다. 앞서 설명한 지상 1층 H형강부재(30)를 설치하는 것과 마찬가지로 흙막이 벽체(10)에 브라켓(13)과 받침보(14)를 설치한 후 상기 받침보(14) 상면에

형상의 영구거푸집의 일단부를 거치시킨다. 상기 수직 강재부재(20)에는 후술하는 접합장치(60)를 미리 설치한 후 영구보거푸집(40)과 접합 연결한다.For the future construction of the beam structure of the reinforced concrete structure

The permanent permanent mold 40 of the shape is installed between the retaining wall 10 and the vertical steel member 20, or between the vertical steel member (20). In the same manner as the above-described first-floor H-shaped steel member 30, the bracket 13 and the support beam 14 are installed on the retaining wall 10, and then the upper surface of the support beam 14 is installed.

Mount one end of the permanent formwork. The vertical steel member 20 is pre-installed with a bonding device 60 to be described later and then bonded to the permanent bobbin (40).

형상의 영구보거푸집(40)의 내부에는 하부 철근이 배근되어 있고, 내측 우각부에는 콘크리트 타설에 따른 배부름을 방지하기 위한 보강가새(41)가 미리 설치되어 있다. 아울러 보구조체의 길이중 후술하는 전용지지틀(70)이 위치하는 구간에는 집중하중이 작용하므로, 상기 전용지지틀(70)이 위치하는 구간의 스터럽(42)은 도 5b에서 보여주는 바와 같이 나머지 구간보다 촘촘하게 배치되어 있다.As shown in Figures 5A-5B

The lower reinforcing bar is arranged inside the permanent formwork 40 of the shape, and the reinforcement bracing 41 is installed in the inner right corner to prevent the ship due to the concrete pouring. In addition, since the concentrated load acts on the section in which the dedicated support frame 70 to be described later among the lengths of the beam structure, the stirrup 42 of the section in which the dedicated support frame 70 is located, the remaining section as shown in Figure 5b It is arranged more closely.

3A to 3D show each embodiment of the bonding apparatus 60 of the beam structure and the vertical steel member 20 of the present invention.

형상의 영구보거푸집(40)의 단부를 폐쇄시키는 막음부재(64) 및 상기 막음부재(64) 내부공간에 설치되는 보강부재(66)로 이루어져 있다.The joining device 60 is a connecting member 65 for connecting the vertical steel member 20 and the following blocking member 64,

It consists of a blocking member 64 for closing the end of the permanent permanent mold 40 of the shape and a reinforcing member 66 is installed in the interior of the blocking member (64).

In the bonding apparatus 60 shown in FIG. 3A, the connecting member 65 is made of I-shaped steel, and the blocking member 64 is formed of an L-shaped steel plate, and an inner space of the blocking member 64 is shown. T-shaped reinforcement member 66 is provided. The connecting member 65, the blocking member 64 and the reinforcing member 66 may be further provided with a stud bolt 100 for shear reinforcement with concrete.

In the bonding apparatus 60 shown in FIG. 3B, the connecting member 65 is made of I-shaped steel, and the blocking member 64 is made of steel having a hexahedron shape with two surfaces open, and the blocking member 64. In the inner space of the T-shaped reinforcement member 66 is installed. The connecting member 65, the blocking member 64 and the reinforcing member 66 may be further provided with a stud bolt 100 for shear reinforcement with concrete.

Bonding device 60 shown in Figure 3c, the connecting member 65 and the reinforcing member 66 is composed of a square tube connected to each other. The blocking member 64 is made of a hexahedral steel material with two surfaces open, the square surface of the beam in the longitudinal direction is formed with a square through hole 602 is inserted into the square through hole (602) It has a shape divided into the connecting member 65 and the reinforcing member (66). Meanwhile, a wing member 601 is installed on the outer surface of the square tube and a slit 603 is formed in the wing member 601 so that one surface of the blocking member 64 in which the through hole 602 is formed is the slit 603. (That is, the space between the wing member of the connecting member 65 and the wing member of the reinforcing member 66) is inserted into the structure. An inner upper end of the reinforcing member 66 may be further attached to an angle member 604 for concrete reinforcement placed therein.

Joining device 60 shown in Figure 3d, the connecting member 65 and the reinforcing member 66 is composed of a single circular pipe connected to each other. The blocking member 64 is made of a hexahedral steel material is open on two sides, the longitudinal surface of the beam is formed with a circular through hole 602 is the circular tube is inserted into the circular through hole 602 It has a shape divided into the connecting member 65 and the reinforcing member (66). Meanwhile, the circular tube is provided with a wing member 601, and the wing member 601 has a slit 603 formed therein so that one surface of the blocking member 64 having the through hole 602 is inserted into the slit 603. It will have a structure. An inverted T-shaped steel 605 for reinforcing concrete, which is poured into the inner upper end of the reinforcing member 66, may be further attached.

The joining devices 60 may be installed on pillar members such as the vertical steel member 20 through the attachment steel according to the shape of the pillar member contacting them.

When the through hole 602 is formed larger than the cross section of the square tube or the circular tube, and the mesh 606 is attached to the space between the square tube or the circular tube, the concrete of the inner pillar and the other beams by the bottom-up concrete placing in the future You will be able to complete the joint with the construction.

So far, the use of the joining device 60 in connecting the beam structure to the vertical steel member has been described. However, the beam structure may be directly connected to the vertical steel member without using the joining device. To this end, formwork means are installed on the vertical steel member.

형상의 영구보거푸집(40)의 하부를 지지하기 위한 I형의 하부 브라켓(30)과 상기 하부 브라켓의 상부면에 거치되는 받침판(62) 및 상기 받침판의 모서리에 수직으로 설치되는 L자형 강재(63)로 이루어지고, 상기 수직 강재부재(20)에는 콘크리트와의 전단보강을 위한 스터드볼트(100)가 더 설치될 수 있다.An embodiment of the formwork described above is as shown in Fig. 3e. That is, the formwork means is connected to the vertical steel member 20

I-shaped lower bracket 30 for supporting the lower portion of the permanent formwork 40, the support plate 62 mounted on the upper surface of the lower bracket and the L-shaped steel installed perpendicular to the edge of the support plate ( 63), the vertical steel member 20 may be further provided with a stud bolt 100 for shear reinforcement with concrete.

형상의 영구보거푸집(40)을 행잉로드(80)로 지지하는 단계 - 도 2i(9) Deck Plate (50) Installation and

Supporting permanently shaped die 40 with a hanging rod 80-FIG. 2i

It is a step of supporting the permanent mold 40 by tying a dedicated support frame 70 with a hanging rod 80.

First, deck plates 50 are installed at both ends of the permanent rim form 40 installed between the retaining wall 10 and the vertical steel member 20, and the H-shaped steel member, which is a beam structure of the first floor ( A through hole 607 is formed in the deck plate 50 of the portion in which the hanging rod 80 installed at 30 is vertically positioned, and a sleeve 608 is installed in the through hole to allow the hanging rod 80 to pass therethrough. do. Subsequently, a dedicated support frame 70 is installed on the lower surface of the permanent formwork 40, and the hanging rod 80 is fixed to the dedicated support form 70 so that the load of the permanent formwork 40 is supported at the top. do. At this time, the upper and lower surfaces of the portion where the hanging rod 80 is inserted in the dedicated support frame 70 is fastened by a fixing nut 82, which prevents the dedicated support frame 70 from moving up and down, and also permanent permanent molds. It is used as a position adjusting means for maintaining the horizontal state of the (40).

4A to 4C show each embodiment of the exclusive support frame 70 of the present invention.

Dedicated support frame 70 shown in Figure 4a, a pair of end frame 72 of the hollow rectangular cross-section with a stepped layer formed on each side of the upper and lower surfaces, and a hollow rectangular cross-section formed on both sides of the upper and lower surfaces symmetrical with each other Central frame 71, a plurality of connecting frames 73 for integrally connecting the pair of end frames 72 and the central frame 71, and the inner side of the end frame 72 and the central frame 71; It consists of a support frame base 74 which is installed in between. Hanging rod inserting portions 75 protruding outward are installed at both ends of the end frame 72 of the dedicated support frame 70, and the inserting portions 75 have holes for inserting the hanging rods 80 in the upper and lower surfaces thereof. The reinforcing plate 706 is provided between the formed attachment plate 705 and the attachment plate so as to correspond to the concentrated load by the hanging rod 80. The support frame base 74 is composed of upper and lower flanges 702 and connecting rods 91 connecting them so that protrusions are formed to be inserted into the support when supporting the support, and end frames between the flanges 702. The stepped layer formed on the upper and lower surfaces of the 72 and the central frame 71 is inserted. Reference numeral 703 is a horizontal bracing fixture to connect the respective support frame to each other so that they can be fixed integrally.

The dedicated support frame 70 illustrated in FIG. 4B has a pair of c-shaped steels 77 connected to each other between the pair of end angles 75 and the two end angles 75 so as to face each other. 73, and the attachment plate 705 having a hole for inserting the hanging rod 80 is coupled to the upper and lower ends of the U-shaped steel (77). On the upper surface of the angle, a pair of fixing angles 704 are installed to prevent the permanent formwork 40 from moving and to respond to the change in formwork width.

The dedicated support frame 70 illustrated in FIG. 4C includes a pair of end frames 72 of a hollow rectangular cross section, and a connecting plate 78 connecting the end frames 72. Cover plates 79 are attached to the upper and lower surfaces of the end frame 72, respectively. Protruding surfaces are formed at both ends of the cover plate 79, and holes are formed in the protruding surfaces to which the hanging rods 80 are inserted. A reinforcing plate 706 is further provided between the protruding surfaces of the cover plate 79 of the upper and lower parts to cope with the concentrated load by the hanging rod 80. In addition, a pair of fixing angles 704 are installed on the upper surface of the upper cover plate 79 to prevent movement of the permanent formwork 40 and to correspond to a change in the formwork width.

(10) Interlayer concrete pouring and curing step-Figure 2j

Interlayer Structural concrete is poured and cured to complete the underground basement interlayer structure.

C. Construction of inter-floor structures and basement exterior walls below 2 stories

형상의 영구보거푸집(40) 설치, 데크플레이트(50) 설치, 전용지지틀(70) 설치 및 행잉로드(80)에 의한 지지, 층간구조체 콘크리트 타설 및 양생의 순으로 반복 작업이 이루어진다. 다만 층간구조체의 콘크리트는 소요 강도가 발현된 후에야 하부의 하중을 지지하는 것이 바람직할 것이므로, 행잉로드(80)에 의한 지지를 할 때 지하 1, 2층 층간구조체의 하중은 지상 1층에서 지지하고, 지하 3층의 층간구조체는 지하 1층에서 지지하며, 지하 4층 층간구조체는 지하 2층에서 지지하는 등의 격층 상부의 보구조체에서 지지토록 하는 것이 바람직할 것이다.The method of constructing an interlayer structure having two underground levels or less is the same as the method of constructing an interlayer structure of one underground layer above. Oyster,

The permanent work form 40 of the shape, the deck plate 50 installation, the dedicated support frame 70 is installed and the support by the hanging rod 80, the interlayer concrete placing and curing is performed in order. However, the concrete of the interlaminar structure should preferably support the lower load only after the required strength is developed. Therefore, when supporting by the hanging rod 80, the loads of the first and second underground structures in the basement are supported on the first floor above the ground. For example, it is preferable that the interlayer structure of the basement 3 stories be supported by the basement 1 floor, and the basement 4 story interlayer structure be supported by the beam structure on the upper part of the strata, such as by the basement 2 floor.

When the interlayer structure of the underground structure is completed through the above repetitive work, the foundation works such as the remaining pit soil and mat concrete pouring, and the underground outer wall and the remaining frame are constructed. In other words, after constructing the foundation, we reinforce the wall reinforcement in succession and finish all the frameworks of the underground structure by placing concrete on the wall concrete and the inner column upward.

Figure 2k shows a state in which the foundation, the outer wall, pillar concrete, etc. is being up-poured after the base structure reversed part is completed by the present invention.

In the above embodiment has been described with respect to the reverse drilling method of the RC structure mainly on the support method by the hanging rod 80, as shown in Figure 6, to install the support 90 in the lower portion of the dedicated support frame 70 Changes to support are also possible. Of course, in the case of supporting the support 90, the construction step related to the installation of the hanging rod 80 is omitted, and instead, the step of installing the support 90 under the dedicated support frame 70 and the beam structure and the floor It is natural that the step of dismantling the support 90 is added when the concrete of the slab exhibits the required strength.

In another embodiment, the beam structure of the first layer may be changed to the structure of the reinforced concrete instead of the H-shaped steel member 30. In this case, when placing an interlayer structure such as the reinforced concrete beam, the embedded concrete beam (Embed Plate 609) or the sleeve 608 for the installation of the hanger in advance is buried in advance of the concrete, so that the reinforced concrete beam is the lower layer. To support the interlayer support load.

The present invention has been described in detail above with reference to specific embodiments, but the above embodiments are merely examples for easy understanding of the present invention. Embodiments will also belong to the protection scope of the present invention as defined by the claims below.

10: retaining wall 11: thumb pile
12: concrete pillar 20: vertical steel member
30: H-shaped steel member, 40: permanent formwork
50: deck plate 60: bonding device
70: support frame 80: hanging rod
90: Support

Claims (24)

Connection member 65 for connecting the vertical steel member 20 and the following blocking member 64, the blocking member 64 for closing the end of the boring die and reinforcement installed in the blocking member 64 internal space It is made of a member 66, the connecting member 65 is made of I-shaped steel, the blocking member 64 is characterized in that made of any one of an L-shaped steel sheet or a hexahedral steel material with two sides open. Joining device of beam structure and vertical steel member for reversing method delete The method of claim 1,
Reinforcing member 66 installed in the inner space of the blocking member 64 is a joining device of the beam structure and the vertical steel member for the reverse drilling method, characterized in that the T-shaped The method of claim 1,
Stud bolt 100 is installed in the connecting member 65, the blocking member 64 and the reinforcing member 66, the joining device of the beam structure and the vertical steel member for the reverse drilling method Connection member 65 for connecting the vertical steel member 20 and the following blocking member 64, the blocking member 64 for closing the end of the boring die and reinforcement installed in the blocking member 64 internal space Member 66, the connecting member 65 and the reinforcing member 66 is a joining device of the beam structure and the vertical steel member for the reverse drilling method, characterized in that one of the square tube or circular tube connected to each other. The method of claim 5,
One surface of the blocking member 64 is formed with a through hole 602 larger than the cross section of the square tube or the circular tube, and a mesh 606 is installed in the space between the through hole 602 and the square tube or the circular tube. Joining device of the beam structure and the vertical steel member for the reverse drilling method characterized in that The method of claim 5,
The wing member 601 is further attached to an outer surface of the square tube or the circular tube, and a slit 603 is formed on the wing member, so that one surface of the blocking member 64 is inserted into the reverse drilling method. Joining device of beam structure and vertical steel member The method of claim 5,
An angle member 604 or an inverted T-shaped steel 605 is attached to the upper end of the square tube or the circular tube, and the joining device of the beam structure and the vertical steel member for reverse drilling method, characterized in that it is further attached. A pair of end frames 72 of hollow rectangular cross-section having a stepped layer formed on each side of the upper and lower surfaces, and a central portion frame 71 of a hollow rectangular cross-section formed with a stepped layer symmetrically on both sides of the upper and lower surfaces, and the pair of ends It consists of a plurality of connecting frame 73 for integrally connecting the frame 72 and the center frame 71, and the support frame base 74 which is installed between the end frame 72 and the inner side of the center frame 71 and On both ends of the end frame 72, a hanging rod insert portion 75 protruding outward and a horizontal bracing fixture 703 for connection between a dedicated support frame are installed, and the insert portion 75 has a hanging rod on the upper and lower surfaces thereof. The reinforcing plate 706 is provided between the attachment plate 705 and the attachment plate, in which the hole 80 is inserted, to correspond to the concentrated load by the hanging rod 80, and the support frame base 74 is Upper and lower flanges 702 and teeth It consists of a connecting rod 91 is formed so as to protrude downwards to be inserted into the support while supporting the support, and formed on the upper and lower surfaces of the end frame 72 and the center frame 71 between the flange 702 Dedicated support frame of the beam structure for the reverse drilling method, characterized in that the stepped layer is inserted structure Between the pair of end angles 76 and the two end angles 76, a pair of c-shaped steels 77 are joined by a connecting frame 73 in a shape back to each other, and the c-shaped steels 77 Attaching plate 705 having a hole for inserting the hanging rod 80 is coupled to the upper and lower ends of the end, and a pair of permanent bobbin fixing angles 704 are installed on the upper surface of the angles. Dedicated Support Frame of Beam Structure for Reverse Puncture A pair of end frame 72 of the hollow rectangular cross section, a connecting plate 78 for connecting the end frame 72, and a cover plate 79 attached to the upper and lower surfaces of the end frame 72, Protruding surfaces are formed at both ends of the cover plate 79, and holes are formed in the protruding surfaces to insert the hanging rods 80, and reinforcing plates 706 are provided between the upper and lower surfaces of the protruding surfaces. On the upper surface of the cover plate 79, a pair of permanent bobbin fixing angle 704 is installed, the special support frame of the beam structure for the reverse drilling method In RC reverse drilling method for constructing underground structures,
A. The ground floor interlayer structure,
(1) the step (S1) for constructing the earth wall (10),
(2) constructing the vertical steel member 20 inside the retaining wall 10 (S2) and
(3) step (S3) to excavate the inside of the retaining wall (10) to a predetermined depth;
(4) Install the brackets 13 at regular intervals on the retaining wall 10, install the supporting beams 14 on the upper surface of the bracket, and then mount the beam structure on the upper surface of the supporting beams 14, thereby retaining the retaining wall. Installing the beam structure connecting the 10 and the vertical steel member 20 (S4),
(5) the deck plate 50 is installed on both ends of the upper beam structure and the step of placing and curing the interlayer concrete (S6),
B. The interlayer structure on the first basement floor,
(7) step (S30) to pit the inside of the retaining wall (10) to a predetermined depth;
(8) Install the brackets 13 at regular intervals on the retaining wall 10, and install the support beam 14 on the upper surface of the bracket and then on the upper surface of the support beam 14

By mounting the permanent formwork 40 of the shape, connecting the retaining wall 10 and the vertical steel member 20

Installing the permanent formwork 40 of the shape (S40),
(9) installing the deck plate 50 at both ends of the upper end of the permanent formwork 40 and supporting the permanent formwork 40 as a support means (S50),
(10) the step of placing and curing the interlayer concrete (S60),
C. Below 2 stories below, repeating each step of B above to complete the construction of the basement interlayer structure, and then constructing the foundation work, the outer wall, and the remaining frame work from the bottom up. Method The method of claim 12,
Reverse beam construction method of the RC structure, characterized in that the beam structure is H-shaped steel member (30) The method of claim 12,
Reverse beam construction method of the RC structure, characterized in that the beam structure is a reinforced concrete structure delete The method of claim 12,
remind

The means for connecting the permanent formwork 40 of the shape to the vertical steel member 20, the reverse drilling method of the RC structure, characterized in that the joining device of any one of claims 1, 3 to 8. The method of claim 12,
remind

Reverse boring method of the RC structure, characterized in that the support frame is further installed between the permanent formwork 40 and the support means of the shape The method of claim 17,
Reverse support method of the RC structure, characterized in that the support frame is a dedicated support frame 70 of any one of claims 9 to 11. The method of claim 18,
remind

The stub 42 for reinforcing with the reinforcing brace 41 on the inner right corner of the permanent permanent mold 40 of the shape, and to improve the shear strength of the finished beam is the reinforcement at the position where the dedicated support frame 70 is located Reverse perforation method of the RC structure, characterized in that arranged so that the interval is narrower than the rest The method of claim 12,
Reverse support method of the RC structure, characterized in that the support means is a support (90) The method of claim 17,
Reverse support method of the RC structure, characterized in that the supporting means is a hanging rod (80) The method of claim 21,
The basement 1 and 2 floors are supported by the beam structure on the first floor above the ground, and the basement 3 floors and below are supported by the beam structure on the upper layer. The method of claim 21,
The hanging rod 80 is further provided with an up and down fixing nut 82, the support frame is fixed and positioned by the up and down fixing nut 82, the reverse drilling method of the RC structure 15. The RC structure according to claim 14, wherein the reinforcing structure of the reinforced concrete structure or the reinforced concrete slab adjacent thereto is pre-installed with a buried hardware 609 or a sleeve 608 for installation of the hanging rod 80. Reverse method

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