KR101485563B1 - The horizontal structural frame - Google Patents

Abstract

The present invention relates to a structure of a horizontal structure frame for forming a wide girder, and comprises: a double girder member (21) having one pair of shape steel members (22) facing to each other and arranged at a predetermined interval from each other to form an internal space (S) in which a permanent column (10) can be placed; a bracket member (30) connected to a steel frame vertical member (70) provided for supporting the double girder member (21) and transmitting the load of the shaped steel member (22) to the steel frame vertical member (70); and a plurality of beam members (23) coupled to the double girder member (21) perpendicularly with respect to the longitudinal direction of the double girder member (21). The double girder member (21) further includes a reinforced concrete part (51) provided in the internal space (S) between the one pair of shape steel members (22). The steel frame vertical member (70) is positioned in the internal space (S) of the double girder member (21), and the bracket member (30) includes a connection steel frame (33) for integrally connecting the steel frame vertical member (70) and the shape steel members (22), wherein a reinforcement member (33a) in an inverse-T shape is further provided to the bottom surface of the connection steel frame (33) to reinforce the bending rigidity.

Description

[0001] The horizontal structural frame [0002]

The present invention relates to a horizontally structured frame for forming a wide girder, and more particularly, to a construction method of a building capable of reducing the amount of steel used while ensuring the efficiency of construction and stability of construction when constructing an underground structure by a backhoe, The present invention also relates to a structure of a horizontal structure frame which can be applied to the construction of a building or a ground structure.

Generally, in a back-up method of a steel-reinforced concrete structure, a main member of an H-shaped steel frame which is a permanent column of the building is caught, a horizontal member such as a steel frame is installed on the main member, And the work load during the back-up process (the weight of the beam and the slab, the working load such as the equipment and the like, which means the load generated during the reverse operation).

The steel reinforced concrete structure in this general steelworking method is constructed by horizontally installing the supporting girder together with the excavation of the H-shaped steel frame for the permanent column, stepwise excavation, placing the beam member between the supporting girders, And the bottom slab is completed by repeating this process. Then, the reinforced concrete is placed on the outer surface of the H-shaped steel frame to construct the permanent columns of the steel-reinforced concrete structure. In addition, when the earth retaining wall is a temporary wall, the outer wall is constructed along with the permanent column.

However, in this conventional method, a girder is formed by using one steel girder. When such a girder has a ramen structure with a column, a maximum bending moment is generated at an end portion of the girder (a joining portion with the column) Since the overall dance of the girder is designed based on the end of the girder, there is a problem that the size of the dance becomes unnecessarily large in the center portion of the girder.

In order to solve such a problem, attempts have been made to improve the efficiency of the section and to reduce the amount of steel used by forming the section of the girder into a section corresponding to the bending moment.

An example of this is disclosed in U.S. Patent No. 0710583, entitled " PC Column-Steel Composite Structure, " filed on Apr. 17, 2007, which discloses that the stress of the entire beam member A steel bracket 120 having a greater dancing than the steel beam 200 is formed from the column to a point at which the bending moment becomes zero in consideration of the distribution, thereby forming a cross-section beam.

Although such a cross-sectional view shows the effect of reducing the amount of steel used by reducing the dancing of the beam formed at an unnecessary size in the middle portion of the beam, the efficiency of the available space decreases as the dancing of the beam changes, There is a problem in that no consideration is given to a steel frame of a small beam vertically joined to the steel frame.

On the other hand, the above-mentioned H-shaped steel frame is installed on the other side in the backfill method by forming a perforation hole from the point where the permanent column is installed to the supporting layer by the perforating equipment, The H-shaped steel frame is fixed by inserting reinforcing concrete or concrete for supporting the temporary foundation, and then the H-shaped steel frame is inserted into the perforation hole and the front end is embedded in the concrete.

However, since the position of the H-shaped steel frame is limited to the point where the permanent column is installed, one H-shaped steel frame must support a large installation load, and accordingly, the H- Although the concrete foundation formed at the tip of the H-shaped steel frame is used only until the foundation is established, the concrete foundation should be formed on a scale capable of supporting the large construction load as described above.

Therefore, it is inevitable to use expensive and large-scale perforation equipment such as Perocusing Rotary Drill (PRD) and Reverse Circulation Drill (RCD) to form the diameter of the hole drilled in the ground for the H-shaped steel frame and temporary foundation. There is a problem that the work becomes complicated when the work space is narrow.

In addition, since the upper and lower flanges must be welded in order to weld the girder to the column, the welding spot becomes excessive, and correction of the girder length is required by the construction error of the H-shaped steel frame. There is a problem of deterioration.

In order to solve the problems caused by the construction error of the H-shaped steel frame as described above, as shown in FIG. 2, the horizontal skeleton structure of the registered patent No. 0662524 on Jan. 21, 2006 and the underground earth- However, since the above-mentioned prior art needs to support the construction load only by the center file, a large-scale equipment such as RCD is necessarily required, and in addition, a horizontal slab, which is the basis of the building, The structure is supported only by the skeletal structure, and there is a problem in that the long span has a limitation in the structural application.

The present invention has been made to solve the problems of the related art as described above, and it is an object of the present invention to reduce the amount of steel frame members such as a girder beam, simplify joining between members, eliminate the necessity of correction work by a construction error, The present invention provides a structure of a horizontal structure frame which can improve workability and shorten air.

In addition, the present invention provides a structure of a horizontal structure frame capable of constructing a structure having an efficient cross-sectional girder corresponding to the size of a bending moment while reducing the slab thickness of the bottom layer, The present invention has been made in view of the above problems.

It is another object of the present invention to provide a structure of a horizontally structured frame that is structurally stable, while avoiding the use of PRD or RCD equipment that requires excessive construction cost and making it possible to use general perforating equipment, thereby achieving economical efficiency.

According to a most preferred embodiment of the present invention for solving the above problems, a pair of steel-frame shapes are arranged at regular intervals so as to oppose each other to form an inner space, A bracket member connected to a vertical steel member provided for supporting the double girder member and transmitting a load of the steel frame steel to a steel vertical member; a bracket member connected to the double girder member at right angles to the longitudinal direction of the double girder member; ≪ / RTI > Wherein the double girder member further comprises a reinforced concrete portion pierced in an internal space between a pair of steel frame members; The steel vertical member is located in the inner space of the double girder member; The bracket member is composed of a connecting steel frame which integrally connects the steel frame vertical member and the steel frame steel, and a horizontal frame is provided on the lower surface of the connecting frame frame, on which an inverted T-shaped stiffener for reinforcing the bending stiffness is installed.

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The present invention provides the following effects by forming a wide girder with a double girder member.

First, the length of the beam member joined to the double girder member is reduced, thereby greatly reducing the amount of steel used.

Second, it enables to change the section of the girder without increasing the dancing. Therefore, the horizontal structure is slimmed with the effective section girder corresponding to the bending moment, thereby increasing the space utilization rate.

Third, it facilitates the construction of the one-way slab, and the joining between the double girder member and the beam member and the joining between the girder member and the column are simplified, thereby improving workability.

In addition, the horizontal structural frame of the present invention enables the steel vertical members supporting the vertical structural members to be used as a permanent member for a permanent column as well as a temporary member or a combination structure thereof, When a part or all of the steel vertical member is used as a temporary member, it is possible to reduce the scale of the equipment used, thereby making it possible to achieve economical efficiency and to improve the workability and quality since no correction work is required by the construction error of the column .

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing an example of a cross-section beam reinforced by an end portion of a beam according to the prior art;
FIG. 2 is a perspective view of the horizontal skeleton structure and FIG. 2 (b) is a process diagram showing a construction process using the horizontal skeleton structure according to another prior art horizontal skeleton structure.
3 is a plan view showing a concept of arranging a horizontal structural frame at the time of construction of a building according to the present invention.
Fig. 4 is a plan view of a first embodiment of a method of constructing an underground structure according to the present invention, in which (a) is a horizontal structural frame installed on a steel vertical member, and (b) is a perspective view thereof.
5 is a perspective view showing an embodiment of a shape in which a beam member is coupled to a double girder member of the present invention.
Figs. 6, 8A and 8B are views showing the coupling relationship between the horizontal structural frame of the present invention, the steel frame vertical member and the bracket member.
7 is a perspective view illustrating a structure in which a reinforced concrete portion is formed in an inner space of the double girder member of the present invention.
9 and 11 are perspective views showing an example in which a permanent column mounting structure is disposed in the internal space of the double girder member of the present invention.
FIG. 10 is a plan view of a second embodiment of a method for constructing an underground structure according to the present invention, in which (a) is a horizontal structural frame mounted on a steel vertical member, and (b) is a perspective view thereof.
FIG. 12 is a perspective view showing an installation structure of an open box form of a permanent column mounting structure according to a second embodiment of the present invention, and a reinforcing steel material therefor. FIG.
FIG. 13 is a plan view of a third embodiment of a method for constructing an underground structure according to the present invention, in which (a) is a horizontal structural frame mounted on a vertical member of a steel frame, and (b) is a perspective view thereof.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, however, it is to be understood that the present invention is not limited to the disclosed embodiments.

3 is a plan view showing the concept that a horizontal structural frame 20 is disposed upon construction of a building according to the present invention.

The horizontal structure frame 20 includes a double girder member 21 and a double girder member 21. The double girder member 21 has a pair of steel frame members 22 facing each other at regular intervals to form an internal space S, And a plurality of beam members 23 coupled at a right angle with respect to the direction.

The double girder member 21 can form a wide girder and can additionally be provided with a reinforcing means by using the internal space S as needed to increase the structural rigidity of the girder member, It is possible to greatly reduce the amount of steel material used by reducing the length of the steel pipe 23.

The permanent columns 10 of the building are located in the internal space S of the double girder member 21. [ The permanent column 10 may be constructed by placing concrete on the outer surface of the steel vertical member 70, which will be described later, and reinforcing concrete may be installed separately from the steel vertical member 70 .

The horizontal structural frame 20 to which the double girder member 21 and the beam member 23 are coupled is fixed to the steel vertical member 70 until the permanent column 10 of the building is completed and supported by the permanent column 10. [ The degree of utilization of the steel vertical member 70, for example, the steel vertical member 70 is used as a base member for the permanent column 10 or as a temporary member for temporarily supporting only the installation load The specific structure of the horizontal structure frame 20 and the construction method thereof are changed.

However, the horizontal structural frame 20 is common to all embodiments in that it includes a bracket member 30 for transferring the load of the steel frame 22 to the steel frame vertical member 70, and the steel frame 22 The structure of the conduction preventing member 40 may be further included to prevent the steel frame 22 from being conducted while maintaining a constant gap between the steel wires. This will be described in more detail with reference to each embodiment of the construction method.

4A and 4B illustrate a first embodiment of a method of constructing an underground structure according to the present invention. FIG. 4A is a cross-sectional view of a horizontal structural frame 20 and a steel vertical member 70, (B) is a perspective view thereof.

The method of constructing an underground structure according to the first embodiment is related to the use of the steel vertical member 70 as a main component of the permanent column 10 in the future, including the steps of: a) constructing the earth retaining wall; b) D) installing a horizontal structural frame (20) for the one-story floor structure; e) installing a horizontal structural frame (20) for the one-story floor structure; F) repeating the above steps from the cullet to the slab construction to complete the floor structure of the underground floor, g) constructing the foundations of the building, h) constructing the permanent columns of the building 10). ≪ / RTI > This will be explained in detail for each step.

a) constructing the earth retaining wall;

  It corresponds to the lateral load due to earth pressure or underground water pressure and it is the step of constructing the earth retaining wall around the site to prevent the inflow of soil and ground water.

Various methods can be used depending on the soil and economical efficiency of the earth retaining wall. Any of permanent walls such as CIP (Cast In Place Pile) or SCW (Soil Cement Wall) and slurry wall It may be used.

b) installing a steel vertical member (70);

  Installing a steel vertical member (70) in the ground for supporting a construction load, the steel vertical member (70) being used as a base material for a permanent column (10) of a future building.

In order to install the steel vertical member 70 in the ground, firstly, the point where the permanent column 10 is to be installed is precisely measured using a perforating machine such as PRD or RCD (Reverse Circulation Drill), and then the support layer It punches.

After completion of the perforation, the inside of the perforation hole is cleaned to remove the slime, the temporary foundation concrete is filled, and the steel vertical member (70) is inserted into the perforation hole so that the front end portion is embedded in the concrete. The installation of the steel vertical member 70 is completed by curing the concrete.

c) performing a cullet for a one story floor structure;

Once the installation of each steel vertical member (70) is completed in accordance with the respective positions where the permanent columns (10) are to be installed, a crushing for the one-story floor structure is performed. Since the excavator may be provided with the horizontal structure frame 20 in the next step, it may be said that the excavator wall is sufficient to support the earth pressure by self-standing alone.

d) installing a horizontal structural frame (20) for a one-story floor structure;

  A horizontal structure frame 20 connecting the earth retaining wall and the steel vertical member 70 is installed. The horizontal structural frame 20 directly or indirectly supports a horizontal load such as earth pressure of the earth retaining wall during construction and functions as a girder or a beam of the building which supports the load of a slab or the like in the future.

Here, the horizontal structural frame 20 directly supports the horizontal load means that the steel frame 22 directly receives the back earth pressure from the earth retaining wall, and the horizontal structural frame 20 indirectly supports the horizontal load Means that the slab installed in the next step directly receives the back earth pressure and the horizontal structural frame 20 receives the back earth pressure through the slab.

As described above, the horizontal structural frame 20 includes a double girder member 21 made of a pair of steel frame members 22, a plurality of beam members 23 coupled to the girder members at right angles, A bracket member 30 for the relationship with the member 70 is included and may optionally include a conduction preventing member 40 and a girder connecting means for preventing the steel frame 22 from being conducted .

5 is a perspective view showing an embodiment of the shape in which the double girder member 21 and the beam member 23 are combined. The double girder member 21 constitutes a wide girder, thereby making it possible to construct an efficient one-way slab structure.

Namely, as shown in Fig. 5, the joint portions of the steel frame 22 constituting the double girder member 21 are joined so as to have a strong coupling structure, that is, bolted to both the upper and lower flanges and the web The beam member 23 to be joined to the double girder member 21 is joined so as to have a fin coupling structure, that is, the web of the beam member 23 is bolted to the web of the steel frame 22, So that the joining process can be efficiently performed. 8B, when the bracket member 30 connected to the steel frame vertical member 70 is integrally formed with the beam member 23, the end of the steel frame 22 is welded to the beam member 23 Bond or pin bond structure. The joint of the steel frame 22 and the joining structure of the beam member 23 are not different from those of the second and third embodiments described later.

6 shows a bracket member 30 for transferring a construction load such as a self weight and an operation load of the horizontal structural frame 20, the steel frame vertical member 70 and the horizontal structural frame 20 to the steel vertical member 70, And FIG. 7 is a perspective view showing an embodiment relating to a coupling relationship between the electrodes.

The steel vertical member 70 used as the main member for the permanent pole 10 is positioned in the inner space S of the double girder member 21 and the bracket member 30 is fixed to the steel vertical member 70. [ Is bolted to be detachable.

The bracket member 30 includes a cradle 31 attached horizontally to both sides of the steel vertical member 70 to respectively mount a pair of steel frame members 22 and a support base 32 for supporting the cradle 31 ), So that it has an inverted triangular shape as a whole.

When the load of the horizontal structural frame 20 is directly transmitted to the steel frame vertical member 70 by the double girder member 21 being joined to the steel vertical member 70 by the girder connecting means, The bracket member 30 is dismantled and can be reused in other work places.

The girder connecting means may be constituted by a reinforced concrete portion 51 placed in the internal space S between the pair of steel frame-like steel bars 22. The reinforced concrete portion 51 is joined to the steel frame vertical member 70 while being integrated with the steel frame 22.

For the joining, a shear connector 72 such as a stud bolt is attached to the steel vertical member 70 in advance. The shear connection member 72 is preferably installed on all sides of the steel vertical member 70. To this end, a T-shaped steel member 74 is attached to the web portion of the steel vertical member 70 as shown in FIG. . In addition, it is preferable to provide the shear connector 72 on the inner web of the steel frame 22.

Although the reinforced concrete part 51 can be individually laid, simultaneous pouring with the concrete for slab construction in the following slab construction step secures structural integrity and reduces the number of work processes desirable.

In order to place the reinforced concrete portion 51, a mold should be installed under the steel frame 22. The mold may be installed on the bottom of the lower flange of the steel frame 22 so that the mold can be demolded. It is preferable to use a permanent mold such as an iron plate or a deck plate 80 which is placed over the upper surface of the lower flange even after the concrete is laid, for convenience of construction and construction.

When it is not necessary to make the thickness of the reinforced concrete portion 51 as large as that of the double girder member 21, a fixing member (not shown) such as an angle is attached to the web of the steel frame 22, The reinforcing concrete portion 51 may be formed by mounting the permanent form of the reinforcing concrete portion 51 on the mounting member so as to make the reinforcing concrete portion 51 slimmer and utilize the space under the reinforcing concrete portion 51 as an available space such as a facility.

However, the permanent column mounting structure 60 including the connecting reinforcing bars 61 for the columns and the concrete casting pipes 62 passing through the upper and lower portions of the double girder member 21 should be installed in advance in the formwork. The connection reinforcing bar 61 for the column should have a sufficient joint length so that there is no problem in joining the reinforcing bars in the future.

7 is a partial perspective view for explaining a structure in which the reinforced concrete portion 51 is formed in the internal space S of the double girder member 21 as shown in FIG. ) Is the view from above.

8A and 8B are views showing a connection relationship between the horizontal structure frame 20 and the bracket member 30 for transmitting the load of the vertical frame member 20 and the vertical frame member 20 to the vertical frame member 70 Fig. 8 is a perspective view showing another embodiment.

8A and 8B, the bracket member 30 is constituted by a connecting steel frame 33 integrally connecting the steel frame vertical member 70 and the steel frame 22, and the girder connecting means of the reinforcing concrete portion 51 If this is added, it is buried.

The bracket member 30 constituting the connection steel frame 33 may be a separate steel member separate from the beam member 23 provided on the opposite side of the steel frame 22 as shown in FIG. , The bracket member 30 may be integrally formed with the beam member 23, and then the steel frame 22 may be vertically joined to the bracket member 30.

Since the bracket member 30 by the connecting steel frame 33 directly transfers the construction load of the horizontal structure to the steel frame vertical member 70, a separate girder connecting means is not necessarily required, and the reinforcing concrete portion 51 The shear connection member 72 for joining the reinforced concrete portion 51 does not need to be installed separately in the steel frame vertical member 70.

However, an inverted T-shaped stiffener 33a for reinforcing the bending stiffness may be further provided on the lower surface of the connecting steel frame 33. [

In the case of adding the reinforced concrete part 51, the permanent column mounting structure 60 is not different from the previous embodiment in that the structure 60 is installed before the concrete is poured. In this case, 61 and the concrete casting pipe 62. The open casting mold 63 may be formed by passing through the upper and lower portions of the double girder member 21 because the connection steel frame 33 is sufficient.

As shown in Figs. 6 and 8A and 8B, the steel vertical member 70, which is in contact with the cradle 31, the support base 32 and the connecting steel frame 33 of the bracket member 30, A stiffener 73 can be further installed.

On the other hand, the reinforced concrete portion 51, which is the girder connecting means, may be formed with respect to the entire length of the double girder member 21, but only with respect to the reinforcing portion of the double girder member 21, Section.

That is, when the double girder member 21 and the permanent column 10 have a laminated structure, the maximum bending moment is generated centering on the joining region of the double girder member 21 and the permanent column 10, It is possible to form the reinforced concrete portion 51 only for the reinforcing range and to form the steel frame 22 only for the remaining portion of the double girder member 21 so that it is possible to appropriately cope with the bending stress without increasing the dancing of the girder So that it has a very favorable effect of having an efficient section girder.

When the bracket member 30 is composed of the connecting steel frame 33, the steel frame 22 constituting the double girder member 21 is not likely to be conducted, 32 and the steel frame 22 is simply mounted on the cradle 31, the steel frame 22 may be conducted during the formation of the horizontal frame 20. [

Therefore, as shown in FIG. 4 (b), the horizontal structural frame 20 having the structure in which the steel frame 22 is simply mounted is fixed to the steel frame 22 while maintaining a constant gap between the steel frame 22 22 may be further prevented from being conducted.

The conduction preventing member 40 includes a horizontal connection member 41 for connecting the lower surfaces of the steel frame members 22 to each other to prevent the steel frame members 22 from being conducted, And a vertical pressing member 42 which is fixed and presses the upper surface of the steel frame 22 vertically or welded to the upper surface of the steel frame 22 to prevent the steel frame 22 from being conducted, And that can prevent conduction of the steel frame 22. The horizontal connecting member 41 and the vertical pressing member 42 may be used alone or in combination. In this case, the vertical press-fitting member 42 may be welded to the upper surface of the steel frame 22 to secure the position of the steel frame 22 more securely. If the vertical press-contact member 42 is formed of an angle or a U- The function of the shear connector 72 of the steel frame 22 may be combined with the concrete.

e) step of constructing a slab having a one-story floor structure

  When the installation of the horizontal structural frame 20 connecting the earth retaining wall and the steel vertical member 70 is completed, a step of constructing a slab having a one-storey bottom structure is followed.

The deck plate 80 is placed on the upper part of the double girder member 21 and the beam member 23, the slab is constructed by placing the concrete after the slab reinforcement is laid. At this time, when the reinforcing concrete part 51 as the girder connecting means is formed on the double girder member 21, it is preferable that the reinforcing concrete part 51 is simultaneously poured together with the concrete for slab.

9 shows an open box form 63 for the permanent column 10 in the internal space S of the double girder member 21 and a concrete slab concrete 51 of the girder joining means The deck plate 80 and the reinforcing bars are laid.

When the slab in this step is constructed, the one-story floor structure under construction is completed.

f) repeating the steps from the cullet of the step c) to the construction of the slab of the step e) to complete the floor structure of the underground layer;

When the bottom structure of the upper layer is completed, the bottom structure of the lower layer is completed by placing the horizontal structure frame 20 so as to connect the earth retaining wall and the steel vertical member 70 and then placing the slab. The bottom structure of the underground layer is completed by successively repeating the steps of c) stepping down, d) installing the horizontal structure frame 20, and step e) building the slab sequentially.

g) constructing the foundations of the building;

When the floor structure of the underground floor is completed, the foundation is constructed by installing the reinforced concrete to support the overall load of the building.

h) step of constructing the permanent columns (10) of the building

  When the foundations of the building are completed, a vertical reinforcing bar is disposed on the steel vertical member (70) to construct a permanent column (10) of steel reinforced concrete structure.

In addition, when a shear wall of the core or the like is installed and the outer wall is wall-joined to the concrete wall in the earth retaining wall when the earth retaining wall is constructed, the permanent pillar 10 and the permanent wall are formed.

10A and 10B illustrate a second embodiment of a method for constructing an underground structure according to the present invention. FIG. 10A is a cross-sectional view of a horizontal structure frame 20 and a steel vertical member 70, (B) is a perspective view thereof.

The method for constructing the underground structure according to the second embodiment relates to a case where the steel vertical member 70 is used as a hypothetical member to be removed in the future, comprising the steps of: a) constructing the earth retaining wall; b) (C) installing a horizontal structure frame (20) for a one-story floor structure, (e) installing a slab of a one-story floor structure, F) repeating the above steps from the cullet to slab construction to complete the floor structure of the underground floor, g) constructing the base of the building, h) installing the permanent column (10) of the building But it is different from the concrete construction of the steel vertical member 70 used as a constructional member, and accordingly, a bracket member (not shown) for supporting the horizontal structural frame 20 30) is also different Was, the difference in that the structure of the permanent columns (10) vary.

This will be described in more detail. A) installing a retaining wall; c) performing a cullet for a one-storey floor structure; f) repeating each step from the cullet to the slab construction to complete the floor structure of the underground floor; And g) the step of constructing the foundations of the building is not different from the first embodiment, so a detailed description thereof will be omitted and only the remaining steps will be explained.

b) installing a steel vertical member (70);

  Since the steel vertical member 70 in this embodiment is not the main part for the permanent column 10, the point of its installation is not constrained to the point where the permanent column 10 is to be installed.

Therefore, the standard and shape of the steel frame vertical member 70 and the installation number thereof can be selectively determined so that the steel frame vertical member 70 can securely and efficiently share the installation load.

However, the steel vertical member 70 in this embodiment is most preferably composed of a pair of vertical members 71 spaced apart from each other as shown in FIG. 10, And is located on the outer surface of the double girder member 21 to be installed in the future.

Since the steel vertical member 70 located on the outer surface of the double girder member 21 is not interfered with the position of the permanent column 10 in this way, the steel vertical member 70 is provided in the inner space S of the double girder member 21 There is an advantage that the installation point can be freed more.

It is preferable that the steel vertical members 70 are evenly arranged so as to securely share the installation load.

It is not different from the first embodiment in that the ground is pierced for the construction of the vertical member 71 constituting the steel vertical member 70 and concrete is laid on the bottom of the hole to form a temporary foundation, 70) can be determined irrespective of the number of the permanent columns (10), so that the size of the temporary foundation can be reduced. Also, the equipment for drilling can be PRD It is economical in that it allows the use of small-sized punching equipment used in the construction of CIP mud walls, avoiding RCD drilling equipment.

A horizontal reinforcing member (not shown) such as an angle is attached to the vertical member 71 and the other end of the horizontal reinforcing member is embedded in the slab to prevent the horizontal buckling due to the airborne construction load have.

d) installing a horizontal structural frame (20) for a one-story floor structure;

  When the crushing for the one-story floor structure is completed, the horizontal structural frame 20 connecting the earth retaining wall and the steel vertical member 70 is installed as in the first embodiment.

The basic structure of the horizontal structure frame 20 used in this embodiment is not different from that of the first embodiment. A plurality of beam members 23 coupled to the double girder member 21 at right angles to each other, and a plurality of beam members 23, The bracket member 30 for the connection with the steel frame member 70 is included and the conductive member 40 for preventing the steel frame 22 from being conducted may be optionally included and configured

Further, in this embodiment, since the main body of the steel frame for the permanent column 10 of the building is not provided, a girder connecting means for joining with the permanent column 10 to be installed in the future must be constituted.

The double girder member 21 of the horizontal structure frame 20 is simply mounted on the bracket member 30 to transmit the installation load of the horizontal structure frame 20 to the steel frame vertical member 70, And a horizontal member 34 connecting between the pair of vertical members 71 constituting the horizontal structural frame 20. A double girder member 21 is mounted on the upper surface of the horizontal member 34. [

Accordingly, the bracket member 30 can be removed and recycled after demolding of the steel vertical member 70 after the permanent column 10 is completed. It is preferable that a stiffener 73 is provided inside the flange of the vertical member 71 to which the horizontal member 34 is attached to prevent deformation of the flange.

As described above, the inner space S of the double girder member 21 is further provided with a girder connecting means composed of a reinforced concrete portion 51. To this end, a girder connecting means is provided to the inner web of the steel frame 22, It is desirable to install a connecting material.

The reinforcing concrete portion 51 of the girder connecting means may be formed on the entirety of the double girder member 21. However, as described in the first embodiment, only the reinforcing concrete portion 51 of the double girder member 21 is required to meet the bending moment of the double girder member 21 It can also be installed. Therefore, when the reinforced concrete portion 51 is formed only for the reinforcing range, the reinforcing concrete portion 51 should be centered around the point where the permanent column 10 is installed.

Since the steel frame 22 of the double girder member 21 is simply mounted on the bracket member 30 in the present embodiment, the steel frame 22 can be moved or turned during the assembly process of the horizontal frame 20. [ A bar, and a conductive member 40 for fixing the bar.

The conduction preventing member 40 includes a horizontal connection member 41 for connecting the lower surfaces of the steel frame 22 to each other and a horizontal connecting member 41 fixedly connected between the vertical members 71 to vertically press the upper surface of the steel frame 22 And the vertical press-fitting member 42 to be welded and fixed.

e) constructing a slab having a one-story floor structure;

  When the installation of the horizontal structural frame 20 to the steel vertical member 70 as a building member is completed, the deck plate 80 is mounted on the upper part of the horizontal structural frame 20 for constructing the slab of the first floor, Followed by reinforced concrete and concrete pouring.

Meanwhile, the above-mentioned girder connecting means may be installed together with the permanent column 10 during the installation of the permanent column 10, but in order to ensure the convenience of construction and the structural stability of the double girder member 21, It is preferable to be simultaneously applied.

It is not different from the first embodiment that the permanent column mounting structure 60 is to be installed in the reinforced concrete portion 51 of the girder connecting means in advance. The step of forming the permanent column mounting structure 60 in the inner space S of the double girder member 21 between the step of installing the horizontal structural frame 20 of step d) and the step of constructing the slab of step e) Should be included.

11 shows an example in which the column reinforcing bars 61 and the concrete casting pipes 62 are provided in the internal space S of the double girder member 21 as the permanent column mounting structure 60, a) shows an example in which an open box form 63 is provided in the reinforced concrete portion 51 as a permanent column mounting structure 60. [

In the case where the open box formwork 63 is installed on the reinforced concrete portion 51, in order to form openings in the deck plate 80 or the steel plate provided on the lower flange of the steel frame 22 on both sides, It is preferable to reinforce it with a reinforcing steel member 64 such as an angle. The reinforcement steel 64 not only reinforces the openings but also exhibits an additional effect of preventing conduction of the steel frame 22 and coping with lateral pressure caused by pouring concrete in the future.

h) step of constructing the permanent columns (10) of the building

When the bottom structure of the underground layer is completed and the base of the building is completed, the outer wall and the permanent column 10 are installed in a spiral shape. In this embodiment, the permanent columns 10 ) Is economical compared with the first embodiment in that it is possible to construct not only the steel reinforced concrete reinforced concrete but also the reinforced concrete reinforced concrete reinforced concrete.

In addition, since the permanent columns 10 of the reinforced concrete tanks do not need to take into account the error of the verticality which occurs when the main body of the steel frame for the permanent columns 10 is installed in advance in manufacturing the double girder member 21, 20).

As for the construction of the permanent column 10, it is general that the floor structure of the underground floor is completed, and then the construction is carried out from the foundation after the completion of the floor structure. However, when the floor structure of the upper floor is completed, This is possible.

When the construction of the permanent column (10) is completed, the steel vertical members (70) of the installed temporary standing members are removed. At this time, the bracket member 30 installed between the vertical members 71 of the steel vertical member 70 is also dismantled and recycled.

Therefore, it is possible to easily remove the vertical member 71 by preventing a concrete from being applied to the vertical member 71 by providing a plate (not shown) on the periphery of the vertical member 71 at a position where the slab is positioned when the vertical member 71 is installed .

13A and 13B illustrate a third embodiment of a method of constructing an underground structure according to the present invention. FIG. 13A is a cross-sectional view of a horizontal structural frame 20 and a steel vertical member 70, (B) is a perspective view thereof.

The method of constructing the underground structure according to the third embodiment is a combination of the first embodiment and the second embodiment described above, and includes the steps of: a) installing the earth retaining wall; b) installing the steel vertical member 70; c) installing a horizontal structural frame (20) for a one-story floor structure, e) constructing a slab of a one-story floor structure, f) (B) completing the floor structure of the underground floor by repeating the steps from the construction of the slab to the construction of the slab, (g) constructing the foundation of the building, and (h) constructing the permanent column , But the steel vertical member 70 in step b) includes a main member for constructing the permanent column 10 in step h) and a permanent column 10 in step h) There is a difference in that a hypothetical member to be removed is used in combination.

Therefore, in the step b), the installation of the steel vertical member 70 is performed together with the construction according to the first and second embodiments, and the installation of the permanent column 10 in the step h) 70, and the steel vertical members 70 used as the temporary members after the permanent columns 10 are completed are removed.

Since the steel frame vertical member 70 is used as the main member of the permanent column 10 as in the first embodiment, the permanent column 10 of the reinforced concrete block is constructed as in the second embodiment It is possible to reduce the size of the steel vertical member 70 used as the main member because the steel vertical member 70 of the temporary standing member is used together with the temporary foundation 70 provided at the lower end of the steel vertical member 70, Can be reduced and the economical effect of not using large punching equipments such as PRD or RCD can be expected.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious that it will be possible to carry out various modifications thereof.

For example, although the present invention is described as an example of a backhoe construction method for constructing an underground structure, it can be easily applied to an underground structure as well as to a case of an underground structure. Anyone can know. It is therefore intended that such modifications are within the scope of the invention as set forth in the claims.

10: Permanent pole 20: Horizontal frame
21: double girder member 23: beam member
30: Bracket member 40:
51: reinforced concrete part 60: permanent column mounting structure
61: Reinforcing bars for columns 62: Concrete casting pipes
63: open box form 70: steel vertical member
71: vertical member 80: deck plate

Claims (20)

delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete A pair of steel frame members 22 are arranged at regular intervals so as to face each other to form an internal space S so that the permanent column 10 can be positioned in the internal space S, A bracket member 30 connected to the vertical steel member 70 installed to support the double girder member 21 and transmitting the load of the steel frame 22 to the vertical steel member 70, And a plurality of beam members (23) coupled at right angles to the double girder member (21) with respect to the longitudinal direction of the girder member (21); The double girder member (21) further includes a reinforced concrete portion (51) laid in an internal space (S) between a pair of steel frame members (22); The steel vertical member (70) is located in the inner space (S) of the double girder member (21); The bracket member 30 is composed of a connecting steel frame 33 that integrally connects the steel frame vertical member 70 and the steel frame 22 and the lower surface of the connecting frame frame 33 has an inverted T- And a reinforcing member (33a) is further installed on the horizontal structure frame structure. delete delete

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