KR101766806B1

KR101766806B1 - the rigid connection structure between precast concrete column and precast concrete beam using the temporary bracket installing precast concrete column, the modular system using the same

Info

Publication number: KR101766806B1
Application number: KR1020150131716A
Authority: KR
Inventors: 홍원기
Original assignee: 경희대학교 산학협력단; (주)케이에이치하우징솔루션스
Priority date: 2015-08-28
Filing date: 2015-09-17
Publication date: 2017-08-31
Also published as: KR101766807B1; KR20170027234A; KR20170027236A; KR20170027233A; KR20170027235A; KR101713862B1; KR101713863B1

Abstract

In the first aspect of the present invention, when the PC beam 200 is vertically installed on the PC column 100, the PC beam 200 is quickly and firmly joined by rigid joining.
A PC column 100 including an upper rebar connecting anchor rib 110 protruding from the outer surface of the column concrete, and a coupler 150 embedded in the outer surface of the column concrete;
A PC beam 200 opened at the top so as to form a slab concrete poured portion 230 therein and including a beam concrete 210; And
A temporary bracket 300 having one end connected to the coupler 150 by a bolt B;
, &Lt; / RTI >
After the end of the PC beam 200 is mounted on the other end of the temporary bracket 300 by pivoting the PC beam 200,
One end of a coupler CP is fastened to a protrusion of the upper bobbin-reinforced anchor rib 110, one end of a compensating end-portion reinforcing bar 400 is fastened to the other end of the coupler CP,
And a compensating part reinforcing bar 450 is connected to the other end of the compensating part end reinforcing bar 400. The reinforcing part reinforcement 450 is connected to the reinforcing part reinforcing bar 450 through a reinforcing part reinforcing bar 450, to provide.
And as a second proposal,
The present invention relates to a method for joining a PC beam 200 to a vertically installed PC column 100 by fast and rigid joining,
A PC column 100 including a coupler 150 embedded in the outer surface of the column concrete, and an upper bipolar coupler fixing rib 110 'fastened to one end of the coupler 150` and embedded in the column concrete.
A PC beam 200 opened at the top so as to form a slab concrete poured portion 230 therein and including a beam concrete 210; And
A temporary bracket 300 having one end connected to the coupler 150 by a bolt B;
, &Lt; / RTI >
After the end of the PC beam 200 is mounted on the other end of the temporary bracket 300 by pivoting the PC beam 200,
One end of the compensating end portion reinforcing bar 400 is fastened to the other end of the coupler 150 '
And a compensating part reinforcing bar 450 is connected to the other end of the compensating part end reinforcing bar 400. The reinforcing part reinforcement 450 is connected to the reinforcing part reinforcing bar 450 through a reinforcing part reinforcing bar 450, to provide.
As a third proposal,
The present invention relates to a method for joining a PC beam 200 to a vertically installed PC column 100 by fast and rigid joining,
A PC column 100 including an upper rebar connecting anchor rib 110 protruding from the outer surface of the column concrete, and a coupler 150 embedded in the outer surface of the column concrete;
A PC beam 200 opened at the top so as to form a slab concrete poured portion 230 therein and including a beam concrete 210; And
A temporary bracket 300 having one end connected to the coupler 150 by a bolt B;
, &Lt; / RTI >
After the end of the PC beam 200 is mounted on the other end of the temporary bracket 300 by pivoting the PC beam 200,
One end of a coupler CP is fastened to a protrusion of the upper bobbin-reinforced anchor rib 110, one end of a compensating end-portion reinforcing bar 400 is fastened to the other end of the coupler CP,
And the compensating part reinforcing bar 450 is joined to the other end of the compensating part end reinforcing bar 400. In the strong jointing structure of the PC column and the PC beam using the temporary bracket provided on the PC column,
The coupler CP and the compensating end portion reinforcing bar 400 are omitted,
The upper reinforcing bar connecting anchor rib 110 is replaced with a compensating reinforcing steel connecting bar 112 protruding longer than the compensating end portion reinforcing bar 400,
The end of the PC beam 200 is mounted on the other end of the stationary bracket 300 'of the temporary bracket 300,
The reinforcing steel reinforcement 450 is joined to the other end of the reinforcing steel reinforcing bar 112 by a reinforcing steel bracket. .

Description

The rigid connection structure between PC columns and PC beams using temporary brackets installed on the PC columns, and the modular system using the rigid connection structures between the precast concrete columns and the precast concrete columns using the modular system using the same}

The present invention relates to a steel joint joining structure of a PC column and a PC beam using a temporary bracket installed on a PC column that improves the jointability by improving the joining portion between the column and the beam and realizing a moment joining method using a semi-dry method, And a modular system using the same.

In recent years, the use of PC (precast concrete) method has been increasing in order to secure workability and to save air.

Conventional PC method is mainly used for (1) simple installation of PC beams on PC columns, and (2) construction of PC columns and PC beams in one body.

(1) The method of simply mounting the PC beam on the PC column,

Although the air is somewhat reduced as one of the currently used methods, when a lateral force such as an earthquake acts, the column-to-beam connection is simply connected, and the moment can not be transmitted. Therefore, it is necessary to install a shear wall, brace, etc., which is a lateral reinforcement means, so that it is inevitable to increase the construction cost and air without meeting the merit of the PC method planned for air saving.

In addition, the collision with the crane caused by the collision of the PC with the PC mounted on the PC column may lead to the collapse of the column - beam connection due to the collapse of many PC members. Therefore, the use of high - rise structures is limited due to the possibility of structural instability in column - beam connections.

The above-mentioned (2) method of integrally installing the PC column -PC beam member,

The use of concrete in the large-scale logistics structures is limited due to the possibility of structural instability during the air delay and curing period due to concrete curing.

In order to solve the drawbacks of the conventional PC method,

Recently, the researcher of the "PC method of moment joint method" has actively carried out, but it is not widely used especially in the high-rise structure due to various disadvantages such as complicated construction details, low economic efficiency and poor workability.

Therefore, the present inventor proposes a moment-resisting frame that can eliminate the installation of a lateral shear reinforcement such as an additional shear wall (formwork and wet construction method) or a brace while being dry type. Especially, if an inexperienced person learns a manual only by using a temporary bracket, We have come up with a PC construction method that can be applied quickly.

[Patent Document 1] Korean Registered Patent No. 10-1289934 Post-tensioned compression bonded joint structure of precast SRC column and precast SRC beam, and method of constructing the jointed structure, 2013.07.25. [Patent Document 2] Korean Registered Patent No. 10-1369998 A steel frame integrated steel column for joining a steel column, and a method for constructing a composite column using the same, 2014.03.06

Disclosure of Invention Technical Problem [8] The present invention has been made in order to solve the above-mentioned problems of the related art,

The joint structure of the PC column and the PC beam using the temporary bracket installed on the PC column that improves the workability by utilizing the temporary bracket to implement the moment bonding method by improving the connection between the column and the beam and modular structure using the modular structure System.

According to a first aspect of the present invention, in order to solve the above-described problems, the present invention provides a method for joining a PC beam 200 to a vertically installed PC column 100 by fast and rigid joining,

A PC column 100 including an upper rebar connecting anchor rib 110 protruding from the outer surface of the column concrete, and a coupler 150 embedded in the outer surface of the column concrete;

A PC beam 200 opened at the top so as to form a slab concrete poured portion 230 therein and including a beam concrete 210; And

A temporary bracket 300 having one end connected to the coupler 150 by a bolt B;

, &Lt; / RTI >

After the end of the PC beam 200 is mounted on the other end of the temporary bracket 300 by pivoting the PC beam 200,

One end of a coupler CP is fastened to a protrusion of the upper bobbin-reinforced anchor rib 110, one end of a compensating end-portion reinforcing bar 400 is fastened to the other end of the coupler CP,

And a compensating part reinforcing bar 450 is connected to the other end of the compensating part end reinforcing bar 400. The reinforcing part reinforcement 450 is connected to the reinforcing part reinforcing bar 450 through a reinforcing part reinforcing bar 450, to provide.

And as a second proposal,

The present invention relates to a method for joining a PC beam 200 to a vertically installed PC column 100 by fast and rigid joining,

A PC column 100 including a coupler 150 embedded in the outer surface of the column concrete, and an upper bipolar coupler fixing rib 110 'fastened to one end of the coupler 150` and embedded in the column concrete.

, &Lt; / RTI >

One end of the compensating end portion reinforcing bar 400 is fastened to the other end of the coupler 150 '

As a third proposal,

, &Lt; / RTI >

And the compensating part reinforcing bar 450 is joined to the other end of the compensating part end reinforcing bar 400. In the strong jointing structure of the PC column and the PC beam using the temporary bracket provided on the PC column,

The coupler CP and the compensating end portion reinforcing bar 400 are omitted,

The upper reinforcing bar connecting anchor rib 110 is replaced with a compensating reinforcing steel connecting bar 112 protruding longer than the compensating end portion reinforcing bar 400,

The end of the PC beam 200 is mounted on the other end of the stationary bracket 300 'of the temporary bracket 300,

The reinforcing steel reinforcement 450 is joined to the other end of the reinforcing steel reinforcing bar 112 by a reinforcing steel bracket. .

According to the present invention, a moment joining method is implemented by semi-dry method by improving the joining between column and beam, and the workability is improved by utilizing a temporary bracket. The joining structure of the PC column and the PC beam using the temporary bracket installed on the PC column , And provides a modular system using it.

FIG. 1 is a view showing a PC column used in a first part of a rigid joint structure of a PC column and a PC beam utilizing a temporary bracket installed on a PC column of the present invention.
2 is a view showing a PC beam used in the first of the rigid joint structure of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention.
FIGS. 3 to 21 illustrate an order of construction of an interior pillar structure in which beams are connected to four sides of a first joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.
22 is a cross-sectional view of a PC column of an interior column structure in which beams are connected to four sides of a first joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.
23 is a cross-sectional view of an inner column-structured upper bobbin-connecting anchor rib and a lower bobbin-reinforced concrete connection in which beams are connected on four sides in a first joint of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention It shows the arrangement of Anchor Riva.
24 is a view showing an arrangement of an interior columnar coupler fixing rib connected to four sides of a first joint of a PC column and a PC beam using a temporary bracket installed on the PC column according to the present invention.
25 illustrates the structure calculation of the temporary bracket in the first of the rigid joint structure of the PC column and the PC beam utilizing the temporary bracket installed on the PC column of the present invention.
Fig. 26 illustrates the specifications of the temporary brackets in the first of the rigid joint structures of PC columns and PC beams utilizing temporary brackets provided on the PC columns of the present invention.
FIG. 27 is a graph showing the stresses of a PC beam end portion of a temporary bracket in a first portion of a rigid joint structure of a PC column and a PC beam utilizing a temporary bracket installed on the PC column of the present invention.
28 illustrates the specifications of the temporary bracket and the PC beam in the first of the rigid joint structure of the PC column and the PC beam utilizing the temporary bracket provided on the PC column of the present invention.
29 is a view showing a connection relationship between a reinforcing bar and a coupler in a first joint of a rigid joint structure of a PC column and a PC beam utilizing a temporary bracket installed on a PC column of the present invention.
30 shows a PC column of an exterior column structure in which beams are connected to three sides of a first joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.
31 is a sectional view of a PC column of an exterior column structure in which beams are connected to three sides of a first joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.
32 is an exploded perspective view showing an example of an outer column connecting anchor rib and a lower beam reinforcing connection in which a beam is connected to three sides of a first joint of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention It shows the arrangement of Anchor Riva.
FIG. 33 shows an arrangement of an outer column-type coupler fixing rib connected to three sides of a first joint of a PC joint and a PC joint using a temporary bracket installed on the PC column of the present invention.
34 to 40 illustrate the order of construction of the outer column structure in which beams are connected to three sides of the first joint of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention.
41 is a view showing a PC column of a corner post structure in which beams are connected to two orthogonal surfaces in a first joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.
42 is a sectional view of a PC column having a corner post structure in which a beam is connected to two orthogonal surfaces in a first joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.
Fig. 43 is a side view of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention. It shows the arrangement of rebar connection anchor Riva.
44 shows an arrangement of a coupler fixing rib of a corner post structure in which beams are connected to two orthogonal surfaces in a first joint of a PC column and a PC joint using a temporary bracket installed on a PC column of the present invention .
45 to 51 illustrate a construction sequence of a corner post structure in which beams are connected to two orthogonal surfaces in a first joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention will be.
FIG. 52 shows a PC column of an interior column structure in which beams are connected to four sides in a second joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.
53 is a cross-sectional view of a PC column of an interior column structure in which beams are connected on four sides in a second joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.
FIG. 54 is a top view showing the upper and lower reinforcing coupler fixing ribs and the lower beam reinforcing coupler of an interior column structure in which beams are connected on four sides in a second joint of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention; It shows the arrangement of the settlement rivers.
FIG. 55 shows an arrangement of an interior columnar coupler fixing rib connected to four sides of a second joint of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention.
FIGS. 56 to 63 show the construction sequence of the interior column structure in which beams are connected to four sides in a second joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.
Fig. 64 shows another embodiment of Fig.
65 shows a PC column of an exterior column structure in which beams are connected on three sides in a second joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.
66 is a cross-sectional view of a PC column of an exterior column structure in which beams are connected to three sides of a second joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.
67 is a view showing an example of an upper column of reinforced concrete coupler fixing ribs and a lower beam reinforcing coupler in which beams are connected on three sides in a second joint of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention; It shows the arrangement of the settlement rivers.
68 shows an arrangement of an outer column-type coupler fixing rib connected to three sides of a second joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.
FIGS. 69 to 75 show the order of construction of the exterior column structure in which beams are connected to three sides of the second joint of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention.
76 shows a PC column having a corner post structure in which a beam is connected to two orthogonal surfaces in a second joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.
77 is a sectional view of a PC column of a corner post structure in which a beam is connected to two orthogonal surfaces in a second joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.
78 is a side view of the upper bipolar coupler fixing ribs and the lower beams of a corner post structure in which beams are connected to two orthogonal surfaces in a second joint of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention; It shows the arrangement of the reinforcing coupler fixing ribs.
79 shows an arrangement of a coupler fixing rib of a corner post structure in which beams are connected to two orthogonal surfaces in a second joint of a PC column and a PC joint using a temporary bracket installed on a PC column of the present invention .
80 to 87 illustrate a construction sequence of a corner post structure in which beams are connected to two orthogonal surfaces in a second joint of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention will be.
88 is a view showing a PC column of an interior column structure in which beams are connected on four sides in a third joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.
89 is a cross-sectional view of a PC column of an interior column structure in which beams are connected to four sides of a third joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.
90 is a view showing an example of a reinforced concrete reinforcing bar and a reinforcing steel reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete pipe reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete In FIG.
91 is a view showing an arrangement of an interior column-shaped coupler fixing rib connected to four sides of a third joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.
92 to 101 illustrate the construction sequence of the interior column structure in which beams are connected to four sides of the third joint of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention.
102 shows various embodiments of a PC column in a third part of a steel joint structure of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.
FIG. 103 shows a PC column of an exterior column structure in which beams are connected to three sides of a third joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.
104 is a cross-sectional view of a PC column of an exterior column structure in which beams are connected to three sides of a third joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.
105 is a view showing an example of an outer column reinforcing reinforcing steel reinforcing bar and a reinforcing steel reinforcing steel reinforced reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete pipe reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete In FIG.
106 shows an arrangement of an outer column-shaped coupler fixing rib connected to three sides of a third joint of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention.
107 to 115 illustrate the order of construction of the outer column structure in which beams are connected to three sides of the third joint of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention.
116 shows a PC column having a corner post structure in which beams are connected to two orthogonal surfaces of a PC joint and a PC joint using a temporary bracket installed on the PC column of the present invention.
117 is a sectional view of a PC column of a corner post structure in which a beam is connected to two orthogonal surfaces in a third joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.
118 is a side view of the compensating part reinforcing steel reinforcing bar and the reinforcing steel reinforcing steel reinforcing bar of the corner post structure in which beams are connected to two orthogonal surfaces in a third joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention; It shows the axes of the connecting bars.
119 is a view showing an arrangement of a coupler fixing rib of a corner post structure in which beams are connected to two orthogonal surfaces in a third joint of a PC column and a PC joint using a temporary bracket installed on a PC column of the present invention .
FIGS. 120 to 129 show a construction sequence of a corner post structure in which beams are connected to two orthogonal surfaces in a third joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention will be.
130 and 131 illustrate a process of installing an inter-column filler plate on a column upper connecting plate of a lower column in a modular system using a rigid joining structure of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention It is.
132 to 135 illustrate a process of installing a frame unit on a lower column in a modular system using a rigid joint structure of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention.
136 shows an example in which a column-to-column filler plate is selectively applied in a modular system using a rigid joint structure of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention.
FIG. 137 shows an example in which an inter-column filler plate is essentially applied in a modular system using a rigid joint structure of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention.
FIGS. 138 to 142 illustrate in detail a process of installing a frame unit on a lower column in a modular system using a rigid joint structure of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.
143 to 150 are diagrams showing the relationship between the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention in the modular system using the rigid joint structure of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention And the first application of the strong bonding structure is applied.
151 is a graph showing the results of the strength bonding of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention in the modular system using the rigid joint structure of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention And the second scheme of the coupling structure is applied.
152 to 153 are diagrams illustrating a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention in a modular system using a rigid joint structure of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention And the third process of the strong joint bonding structure is applied.
154 to 166 show the overall construction sequence of the modular system using the rigid joint structure of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention.
167 to 168 illustrate the completion of a modular system using a rigid joint structure of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention from a different angle.
169 is a view showing a coupling relationship when a filler plate is absent in a modular system using a rigid joint structure of a PC column and a PC beam utilizing a temporary bracket installed on a PC column of the present invention.
170 to 172 illustrate a relationship in which the upper portion of the column main shaft of the lower column is bent and engaged when there is a filler plate in a modular system using a rigid joining structure of a PC column and a PC beam utilizing a temporary bracket installed on the PC column of the present invention FIG.
Figure 173 is a diagram showing a relationship in which a nut of a column main shaft is accommodated in one hole when a filler plate is provided in a modular system using a rigid joining structure of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

(1) First, (2), (2), and (3) of the present invention, "a rigid joint structure of a PC column and a PC beam using a temporary bracket installed on a PC column, and a modular system using the same, 3 eyes and (4) modular system,

In detail, 1) interior pillars, 2) exterior pillars, and 3) corner pillars.

The stud bolt 140 is a complementary measure for the occurrence of a joint between the PC beam 200 and the PC column 100,

The stud bolt (140)

May be embedded in the column concrete, joined to the plates 160 and 160 'by a stud gun, or screwed into the coupler.

However,

In order to prevent interference with the stud bolt 140 when the PC beam 200 is lifted up or down,

1) The stud bolts 140 may be installed in such a range that copper wires do not overlap with both ends of the PC beam 200,

2) As shown in the drawings, the stud bolt 140 should be installed after the PC beam 200 is installed.

Ⅰ. 1st plan

1 is a view showing a PC column used in a first part of a rigid joint structure of a PC column and a PC beam utilizing a temporary bracket installed on a PC column of the present invention,

2 is a view showing a PC beam used in the first of the rigid joint structure of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention.

3 to 21 illustrate a construction sequence of an interior column structure in which beams are connected to four sides in a first joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention ,

22 is a cross-sectional view of a PC column of an interior column structure in which beams are connected to four sides of a first joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.

23 is a cross-sectional view of an inner column-structured upper bobbin-connecting anchor rib and a lower bobbin-reinforced concrete connection in which beams are connected on four sides in a first joint of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention It shows the arrangement of Anchor Riva.

24 is a view showing an arrangement of an interior columnar coupler fixing rib connected to four sides of a first joint of a PC column and a PC beam using a temporary bracket installed on the PC column according to the present invention.

The first proposal of the rigid joint structure of the PC column and the PC beam using the temporary bracket provided on the PC column of the present invention is as follows.

, &Lt; / RTI >

And the compensating part reinforcing bar 450 is reinforced at the other end of the compensating part end reinforcing bar 400.

23,

A lower bobbin-reinforced anchor rib 120 protruding from the outer surface of the column concrete is provided under the upper bobbin-reinforced anchor rib 110,

One end of a coupler CP is fastened to a protruding portion of the lower reinforcing bar connecting anchor lever 120 and one end of the lower reinforcing bar 500 is fastened to the other end of the coupler CP.

The beam concrete 210 preferably has a U-shaped cross section, and the same is applied hereinafter.

A side board 600 having a thickness corresponding to a thickness of the side boards prepared between the side end of the PC beam 200 and the outer surface of the column concrete,

One end of a deck plate (DP) is mounted on an end of the upper part of the beam concrete (210)

The slab concrete (SC) is laid on the deck plate (DP), and the compensating end portion reinforcing bar (400) and the compensating portion reinforcing bar (450) are laid on the top of the deck plate (DP).

As shown in Figure 2,

At the upper end of the beam concrete 210,

A deck plate rest 280 is provided continuously or intermittently,

One end of the deck plate DP is mounted on the deck plate rest 280,

The deck plate holder 280 is spaced apart from the side end of the PC beam 200 by a gap G to secure a working space for sliding the side board 600 by inserting the side board 600. [

As shown in Figure 3,

A step 320 protruding perpendicularly to both ends of the temporary bracket 300 is formed at an upper portion of the temporary bracket 300 so that the step 320 serves as a guide when sliding the side board 600, And to support the lower end.

The step 320 may be formed as a separate member, joined to both ends of the upper portion of the temporary bracket 300, or may be formed in a folded shape.

As shown in FIG. 2, the PC beam 200 includes:

The anchor bolt 250 and the stirrer 270,

One end of the beam anchor bolt 250 is embedded in the beam concrete 210 and the other end thereof is exposed to the slab concrete installation portion 230,

As shown in FIGS. 9 to 10, the stirrer 270 is exposed above the beam concrete 210 to guide the compensating end portion reinforcing bars 400.

1,

A plate 160 is installed on the outer surface of the column concrete,

And the other end of the coupler 150 is exposed through the hole of the plate 160, and the coupler can be easily installed.

As shown in FIG. 2,

An angle plate (290) is disposed at an underside of an end portion of the beam concrete (210) to prevent breakage of a bottom portion of the beam concrete (210) when the bottom portion of the beam concrete (210) contacts the temporary bracket (300). Is installed,

The angle plate 290 is installed on the beam concrete 210 through an angle plate fixing anchor 295.

25 illustrates the structure calculation of the temporary bracket in the first of the rigid joint structure of the PC column and the PC beam utilizing the temporary bracket installed on the PC column of the present invention.

Fig. 26 illustrates the specifications of the temporary brackets in the first of the rigid joint structures of PC columns and PC beams utilizing temporary brackets provided on the PC columns of the present invention.

FIG. 27 is a graph showing the stresses of a PC beam end portion of a temporary bracket in a first portion of a rigid joint structure of a PC column and a PC beam utilizing a temporary bracket installed on the PC column of the present invention.

28 illustrates the specifications of the temporary bracket and the PC beam in the first of the rigid joint structure of the PC column and the PC beam utilizing the temporary bracket provided on the PC column of the present invention.

29 is a view showing a connection relationship between a reinforcing bar and a coupler in a first joint of a rigid joint structure of a PC column and a PC beam utilizing a temporary bracket installed on a PC column of the present invention.

(1) interior columns

FIGS. 3 to 21 illustrate an order of construction of an interior pillar structure in which beams are connected to four sides of a first joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.

The inner column structure in which the beams are connected to the four sides of the first joint of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention,

In order to install four PC beams 200 on four sides of the PC column 100,

A plurality of the upper bobbin-reinforced anchor ribs 110 cross each other at different level differences within the column concrete,

A plurality of coupler fixing ribs 130 intersect with each other at a level difference within the column concrete,

And the coupler 150 is fastened to the end of the coupler fixing rib 130.

One end of the temporary bracket 300 is connected to the coupler 150 by a bolt (B).

In order to install the four PC beams 200 on four sides of the PC column 100,

A plurality of the lower reinforcing bar connecting anchor ribs 120 intersect with each other at a level difference within the column concrete.

Also, as shown in FIG. 23,

Instead of intersecting a plurality of lower reinforcing bar connecting anchor ribs 120 with different level differences within the column concrete,

And a plurality of the lower reinforcing bar connecting anchor ribs 120 are installed at the same level in the column concrete.

(2) Exterior Exterior column

30 shows a PC column of an exteral column structure in which beams are connected to three sides of a first joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.

31 is a sectional view of a PC column of an exterior column structure in which beams are connected to three sides of a first joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.

32 is an exploded perspective view showing an example of an outer column connecting anchor rib and a lower beam reinforcing connection in which a beam is connected to three sides of a first joint of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention It shows the arrangement of Anchor Riva.

FIG. 33 shows an arrangement of an outer column-type coupler fixing rib connected to three sides of a first joint of a PC joint and a PC joint using a temporary bracket installed on the PC column of the present invention.

34 to 40 illustrate the order of construction of the outer column structure in which beams are connected to three sides of the first joint of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention.

The outer column structure in which beams are connected to three sides of the first joint of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention,

In order to install the three PC beams 200 on three sides of the PC column 100,

And the coupler 150 is fastened to the end of the coupler fixing rib 130.

31,

On one side of the PC column 100 where the PC beam 200 is not installed,

A dead anchor DA having an enlarged head shape is installed at the other end of the upper bobbin-reinforced anchor rib 110,

The dead anchor DA may be omitted,

And the other end of the upper bobbin-reinforced anchor rib 110 is folded to form a vertical fixing unit 110 ''.

In the column concrete, a plurality of the lower reinforcing bar connecting anchor ribs 120 cross each other at different levels.

Also, as shown in FIG. 32,

33,

On one side of the PC column 100 where the PC beam 200 is not installed,

And a dead anchor DA having an enlarged head shape is provided at the other end of the coupler fixing rib 130.

And although not shown, similar to Fig. 44,

The dead anchor DA may be omitted,

The other end of the coupler fixing rib 130 is bent to form a vertical fixing unit 130 '.

(3) Corner column

41 is a view showing a PC column of a corner post structure in which beams are connected to two orthogonal surfaces in a first joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.

42 is a sectional view of a PC column having a corner post structure in which a beam is connected to two orthogonal surfaces in a first joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.

Fig. 43 is a side view of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention. It shows the arrangement of rebar connection anchor Riva.

44 shows an arrangement of a coupler fixing rib of a corner post structure in which beams are connected to two orthogonal surfaces in a first joint of a PC column and a PC joint using a temporary bracket installed on a PC column of the present invention .

45 to 51 illustrate a construction sequence of a corner post structure in which beams are connected to two orthogonal surfaces in a first joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention will be.

A corner post structure in which beams are connected to two orthogonal surfaces of a rigid joint structure of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention,

In order to install two PC beams 200 on two sides of the PC column 100,

And the coupler 150 is fastened to the end of the coupler fixing rib 130.

42,

On one side of the PC column 100 where the PC beam 200 is not installed,

43,

The dead anchor DA may be omitted,

In order to install two PC beams 200 on two sides of the PC column 100,

A plurality of the lower reinforcing bar connecting anchor ribs 120 intersect with each other at a level difference within the column concrete,

As shown in FIG. 43,

44,

On one side of the PC column 100 where the PC beam 200 is not installed,

A dead anchor DA having an enlarged head shape is installed at the other end of the coupler fixing rib 130,

The dead anchor DA may be omitted,

Ⅱ. Second eye

FIG. 52 shows a PC column of an interior column structure in which beams are connected to four sides in a second joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.

53 is a cross-sectional view of a PC column of an interior column structure in which beams are connected on four sides in a second joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.

FIG. 54 is a top view showing the upper and lower reinforcing coupler fixing ribs and the lower beam reinforcing coupler of an interior column structure in which beams are connected on four sides in a second joint of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention; It shows the arrangement of the settlement rivers.

FIG. 55 shows an arrangement of an interior columnar coupler fixing rib connected to four sides of a second joint of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention.

FIGS. 56 to 63 show the construction sequence of the interior column structure in which beams are connected to four sides in a second joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.

Fig. 64 shows another embodiment of Fig.

The second proposal of the rigid joint structure of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention,

As shown in Figure 64 (c)

, &Lt; / RTI >

And, although not shown, similar to Figure 1,

A lower reinforcing bar connecting anchor rib 120 protruding from the outer surface of the column concrete is provided under the upper reinforcing bar coupler fixing rib 110 '

54,

The lower reinforcing bar connecting anchor rib 120 and the coupler CP are omitted,

A coupler 150 'embedded in the outer surface of the column concrete; And

A lower bobbin coupler fixing lever 120 'fastened to one end of the coupler 150' and embedded in the column concrete;

Lt; / RTI >

And one end of the beam lower reinforcing bar 500 is fastened to the other end of the coupler 150 '.

As shown in Figure 60,

A side board 600 having various thicknesses prepared between the side end of the PC beam 200 and the outer surface of the column concrete is installed,

And

At the upper end of the beam concrete 210,

A deck plate rest 280 is provided continuously or intermittently,

One end of the deck plate (DP) is mounted on the deck plate mounting base (280)

The step 320 protrudes vertically at both ends of the temporary bracket 300 so that the step 320 serves as a guide when sliding the side board 600. At the same time, And the lower end of the guide plate.

In the PC beam 200,

The anchor bolt 250 and the stirrer 270,

The stirrer 270 is exposed on the upper portion of the beam concrete 210 to guide the compensating end portion reinforcing bars 400.

As shown in Figs. 52 to 53,

A plate 160 'is installed on the outer surface of the column concrete,

The other end of the coupler 150 'is exposed through the hole of the plate 160', and the coupler can be easily installed.

(1) interior columns

Fig. 64 shows another embodiment of Fig.

The inner column structure in which beams are connected to four sides of the second joint of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention,

In order to install four PC beams 200 on four sides of the PC column 100,

A plurality of the upper bobbin reinforcing coupler fixing rods 110 'intersect at different levels in the column concrete,

And the coupler 150 is fastened to the end of the coupler fixing rib 130.

Although not shown,

A plurality of the lower bobbin reinforcing coupler fixing ribs 120 'intersect with each other at a level difference within the column concrete,

54,

A plurality of the lower bobbin reinforcing coupler fixing rods 120 'may cross each other at different level differences in the column concrete,

And a plurality of the lower bobbin reinforcing coupler fixing rods 120 'are installed at the same level in the column concrete.

And

An angle plate (290) is provided at the lower end of the beam concrete (210) in order to prevent breakage of the bottom portion of the beam concrete (210) when the bottom of the beam concrete (210) contacts the temporary bracket (300). Is installed.

(2) Exterior Exterior column

65 shows a PC column of an exterior column structure in which beams are connected on three sides in a second joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.

66 is a cross-sectional view of a PC column of an exterior column structure in which beams are connected to three sides of a second joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.

67 is a view showing an example of an upper column of reinforced concrete coupler fixing ribs and a lower beam reinforcing coupler in which beams are connected on three sides in a second joint of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention; It shows the arrangement of the settlement rivers.

68 shows an arrangement of an outer column-type coupler fixing rib connected to three sides of a second joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.

FIGS. 69 to 75 show the order of construction of the exterior column structure in which beams are connected to three sides of the second joint of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention.

The outer column structure in which the beams are connected to the three sides of the second joint of the PC column and the PC beam using the temporary bracket provided on the PC column of the present invention,

In order to install the three PC beams 200 on three sides of the PC column 100,

And the coupler 150 is fastened to the end of the coupler fixing rib 130.

As shown in Figure 66,

On one side of the PC column 100 where the PC beam 200 is not installed,

A dead-head dead anchor DA is installed at the other end of the upper bobbin reinforcing coupler fixing rib 110 'or the other end of the upper bobbin reinforcing coupler fixing rib 110' is bent to form a vertical fixing unit 110 ' &Quot;). &Lt; / RTI >

A plate 160 'is installed on the outer surface of the column concrete,

(3) Corner column

76 shows a PC column having a corner post structure in which a beam is connected to two orthogonal surfaces in a second joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.

77 is a sectional view of a PC column of a corner post structure in which a beam is connected to two orthogonal surfaces in a second joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.

78 is a side view of the upper bipolar coupler fixing ribs and the lower beams of a corner post structure in which beams are connected to two orthogonal surfaces in a second joint of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention; It shows the arrangement of the reinforcing coupler fixing ribs.

79 shows an arrangement of a coupler fixing rib of a corner post structure in which beams are connected to two orthogonal surfaces in a second joint of a PC column and a PC joint using a temporary bracket installed on a PC column of the present invention .

80 to 87 illustrate a construction sequence of a corner post structure in which beams are connected to two orthogonal surfaces in a second joint of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention will be.

The corner post structure in which the beam is connected to two orthogonal surfaces of the second joint of the PC joint and the PC joint using the temporary bracket provided on the PC column of the present invention,

In order to install two PC beams 200 on two sides of the PC column 100,

And the coupler 150 is fastened to the end of the coupler fixing rib 130.

On one side of the PC column 100 where the PC beam 200 is not installed,

A plate 160 'is installed on the outer surface of the column concrete,

Ⅲ. Third Plan

88 is a view showing a PC column of an interior column structure in which beams are connected on four sides in a third joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.

89 is a cross-sectional view of a PC column of an interior column structure in which beams are connected to four sides of a third joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.

90 is a view showing an example of a reinforced concrete reinforcing bar and a reinforcing steel reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete pipe reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete In FIG.

91 is a view showing an arrangement of an interior column-shaped coupler fixing rib connected to four sides of a third joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.

92 to 101 illustrate the construction sequence of the interior column structure in which beams are connected to four sides of the third joint of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention.

The third proposal of the rigid joint structure of the PC column and the PC beam using the provisional bracket provided on the PC column of the present invention is shown in Fig. 88,

, &Lt; / RTI >

And the compensating part reinforcing bar 450 is joined to the other end of the compensating part reinforcing steel connecting rod 112 by reinforcing bars.

88,

A beam lower reinforcing steel reinforcing bar 122 protruding from the outer surface of the column concrete is added to the reinforcing steel reinforcing steel reinforcing bar 112,

And the reinforcement of the beam lower reinforcing bar 500 is joined to the other end of the beam lower reinforcing steel reinforcing bar 122.

As shown in Figures 94 to 95,

The mounting bracket 300 'is extended in the sliding bracket 300 in a sliding type or a folding type.

At the upper end of the beam concrete 210,

A deck plate rest 280 is provided continuously or intermittently,

And one end of the deck plate DP is mounted on the deck plate rest unit 280. [

In the PC beam 200,

The anchor bolt 250 and the stirrer 270,

The stirrer 270 is exposed above the beam concrete 210 to guide the compensating part reinforcing bars 450.

As shown in Figures 95 to 96,

In the PC beam 200,

A straight stub 270 ', which is unfurled and unfolded, is added,

The linear stub 270 is exposed on the upper portion of the beam concrete 210 so that interference does not occur when the compensating part reinforcing steel reinforcing bar 112 approaches from above,

And the upper end of the straight stub 270 'is bent after the compensating portion reinforcing steel connecting rod 112 is installed.

Plates 160 and 160 'are installed on the outer surface of the column concrete,

The other ends of the couplers 150 and 150 'are exposed through the holes of the plates 160 and 160', and the coupler can be easily installed.

(1) interior columns

The inner column structure in which beams are connected to four sides of the third joint of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention,

In order to install four PC beams 200 on four sides of the PC column 100,

A plurality of compensating part reinforcing bars connecting reinforcing bars 112 intersect with each other at a level difference within the column concrete,

And the coupler 150 is fastened to an end of the coupler fixing rib 130,

One end of the compensating part reinforcing steel reinforcing bar 112 is fastened to a coupler 150 'embedded in the outer surface of the pillar concrete so that there is no projection on one side of the PC pillar 100, And the other end of the coupler 150 'is exposed through the hole of the plate 160'.

90,

In order to install four PC beams 200 on four sides of the PC column 100,

The coupler 150 is fastened to the end of the coupler fixing rib 130 and one end of the temporary bracket 300 is connected to the coupler 150 by a bolt B,

A plurality of beam reinforcing steel reinforcing bars 122 intersect with each other at a level difference within the column concrete.

And,

Instead of intersecting a plurality of beam lower reinforcing bars 122 with different level differences in the column concrete,

And a plurality of the beam lower reinforcing bars 122 are installed at the same level in the column concrete.

In order to prevent breakage of the lower end portion of the beam concrete 210 when the lower end of the beam concrete 210 is in contact with the lower fixture portion 300 ' And a plate (290).

And,

102 shows various embodiments of a PC column in a third part of a steel joint structure of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.

As shown, the plate 160 can be selectively borrowed.

And,

(2) Exterior Exterior column

FIG. 103 shows a PC column of an exterior column structure in which beams are connected to three sides of a third joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.

104 is a cross-sectional view of a PC column of an exterior column structure in which beams are connected to three sides of a third joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.

105 is a view showing an example of an outer column reinforcing reinforcing steel reinforcing bar and a reinforcing steel reinforcing steel reinforced reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete pipe reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete In FIG.

106 shows an arrangement of an outer column-shaped coupler fixing rib connected to three sides of a third joint of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention.

107 to 115 illustrate the order of construction of the outer column structure in which beams are connected to three sides of the third joint of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention.

The outer column structure in which beams are connected to three sides of the third joint of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention,

In order to install the three PC beams 200 on three sides of the PC column 100,

And a plurality of compensating part reinforcing steel reinforcing bars 112 intersect with each other at a level difference within the column concrete.

And, as shown in Figs. 104 to 105,

On one side of the PC column 100 where the PC beam 200 is not installed,

A dead-head dead anchor DA is provided at the other end of the compensating portion reinforcing steel reinforcing bar 112 embedded in the column concrete or the other end of the compensating reinforcing reinforcing steel reinforcing bar 112 is bent to form a vertical fixing portion 112 ').

Also,

Plates 160 and 160 'are installed on the outer surface of the column concrete,

(3) Corner column

116 shows a PC column having a corner post structure in which beams are connected to two orthogonal surfaces of a PC joint and a PC joint using a temporary bracket installed on the PC column of the present invention.

117 is a sectional view of a PC column of a corner post structure in which a beam is connected to two orthogonal surfaces in a third joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.

118 is a side view of the compensating part reinforcing steel reinforcing bar and the reinforcing steel reinforcing steel reinforcing bar of the corner post structure in which beams are connected to two orthogonal surfaces in a third joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention; It shows the axes of the connecting bars.

119 is a view showing an arrangement of a coupler fixing rib of a corner post structure in which beams are connected to two orthogonal surfaces in a third joint of a PC column and a PC joint using a temporary bracket installed on a PC column of the present invention .

FIGS. 120 to 129 show a construction sequence of a corner post structure in which beams are connected to two orthogonal surfaces in a third joint of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention will be.

The corner post structure in which the beam is connected to two orthogonal surfaces of the third joint of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention,

In order to install two PC beams 200 on two sides of the PC column 100,

As shown in Figures 117 to 118,

On one side of the PC column 100 where the PC beam 200 is not installed,

Plates 160 and 160 'are installed on the outer surface of the column concrete,

IV. Modular system

130 and 131 illustrate a process of installing an inter-column filler plate on a column upper connecting plate of a lower column in a modular system using a rigid joining structure of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention It is.

132 to 135 illustrate a process of installing a frame unit on a lower column in a modular system using a rigid joint structure of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention.

136 shows an example in which a column-to-column filler plate is selectively applied in a modular system using a rigid joint structure of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention.

FIG. 137 shows an example in which an inter-column filler plate is essentially applied in a modular system using a rigid joint structure of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention.

FIGS. 138 to 142 illustrate in detail a process of installing a frame unit on a lower column in a modular system using a rigid joint structure of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention.

143 to 150 are diagrams showing the relationship between the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention in the modular system using the rigid joint structure of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention And the first application of the strong bonding structure is applied.

151 is a graph showing the results of the strength bonding of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention in the modular system using the rigid joint structure of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention And the second scheme of the coupling structure is applied.

152 to 153 are diagrams illustrating a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention in a modular system using a rigid joint structure of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention And the third process of the strong joint bonding structure is applied.

154 to 166 show the overall construction sequence of the modular system using the rigid joint structure of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention.

167 to 168 illustrate the completion of a modular system using a rigid joint structure of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention from a different angle.

The modular system using the rigid joint structure of the PC column and the PC beam using the temporary bracket installed on the PC column of the present invention,

Since the rigid joint structure of the PC column and the PC beam using the temporary bracket installed on the PC column according to the first to third aspects of the present invention is used,

And a plurality of prefabricated frame units (1000) in which the PC columns (100) form outer pillars,

The PC beam 200 is sandwiched between the PC columns 100 facing the plurality of frame units 1000,

And a rigid joint structure of the PC column and the PC beam using the temporary bracket provided on the PC column is constructed.

And

The frame unit 100 is coupled to the upper part of the lower column 1100,

The column lower connection plate CDP at the lower end of the PC column 100 and the column upper connection plate CUP at the upper end of the lower column 1100 are bolted to each other.

169 is a view showing a coupling relationship when a filler plate is absent in a modular system using a rigid joint structure of a PC column and a PC beam utilizing a temporary bracket installed on a PC column of the present invention.

As shown in Figs. 136 (b) and 169,

A hole is formed in the column lower connection plate CDP and the column upper connection plate CUP in order to accommodate a nut projected to the column lower connection plate CDP and the column upper connection plate CUP for fixing the columnar root of the column, Or,

Also, as shown in Figure 136 (a)

An inter-column filler plate (PP) having a hole formed therein for receiving a nut projecting from the column lower connection plate (CDP) and the column upper connection plate (CUP) ) And the column upper connecting plate (CUP).

170 to 172 illustrate a relationship in which the upper portion of the column main shaft of the lower column is bent and engaged when there is a filler plate in a modular system using a rigid joining structure of a PC column and a PC beam utilizing a temporary bracket installed on the PC column of the present invention FIG.

As shown,

In the present invention, the lower pillar 1100 is bent at an upper angle of the pillar main shaft to shift the pillar main shaft and the center line of the PC pillar 100,

A hole is separately formed in the inter-column filler plate PP to accommodate a nut for fixing the columnar root of the lower column 1100 and a nut for fixing the columnar root of the PC column 100, respectively .

Figure 173 is a diagram showing a relationship in which a nut of a column main shaft is accommodated in one hole when a filler plate is provided in a modular system using a rigid joining structure of a PC column and a PC beam using a temporary bracket installed on the PC column of the present invention FIG.

As shown,

When the column main shaft of the lower column 1100 and the column main shaft of the PC column 100 coincide with the center line,

The thickness of the inter-column filler plate PP is not less than the sum of the thickness of the nut for fixing the columnar root of the lower column 1100 and the thickness of the nut for fixing the columnar root of the PC column 100,

And a nut for fixing the column main shaft of the lower column 1100 and a nut for fixing the column main shaft of the PC column 100 to and from above and below one hole of the inter-column filler plate PP .

And,

169 are not only a 'modular system using a rigid joint structure of a PC column and a PC beam using a temporary bracket installed on a PC column' of the present invention,

The present invention can be applied solely to the 'rigid joint structure of the PC column and the PC beam using the temporary bracket installed on the PC column' of the present invention described above.

When applied to a rigid joint structure of a PC column and a PC beam using a temporary bracket installed on a PC column of the present invention,

The PC column 100 and the PC column 100 are coupled to the upper portion of the lower column 1100,

The column lower connection plate CDP at the lower end of the PC column 100 and the column upper connection plate CUP at the upper end of the lower column 1100 are bolted to each other,

An inter-column filler plate (PP) having a hole formed therein for receiving a nut projecting from the column lower connection plate (CDP) and the column upper connection plate (CUP) ) And the column upper connecting plate (CUP)

The lower pillar 1100 is bent at an upper angle of the pillar of the column to displace the center line of the pillar of the PC column 100,

In conclusion,

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

It is therefore intended that the appended claims cover such modifications and variations as fall within the true scope of the invention.

DA: dead anchor
G: Spacing
SC: Slab Concrete
DP: Deck plate
CP: Coupler
B: Bolt
CDP: Column lower connection plate
CUP: Column top connection plate
PP: Column filler plate
100: PC pole
110: Upper bobbin connection anchor Riba
110`: Upper bobbins coupler settled by Riba
110``, 110```: vertical fixing unit
112: Reinforcing section Reinforcing steel bars
112 ': vertical fixing unit
120: Lower bobbin connection anchor RIVA
120`: Lower bobbin reinforced coupler Riba
122: Reinforced steel reinforcement
130: Coupler Settlement Ribe
130`: vertical fixing unit
150, 150`: Coupler
160, 160`: plate
200: PC Bo
210: beam concrete
230: slab concrete cast part
250: Beam anchor bolt
270: Sutup
280: Deck plate holder
290: Angle plate
295: Anchor plate anchor
300: temporary bracket
300`: Mounting supplementary book
320: step
400: Compensation end reinforcement
450: Reinforcing section reinforcing bar
500: Beam bottom reinforcement
600: side board
1000: Frame unit
1100: Lower column

Claims

The present invention relates to a method for joining a PC beam 200 to a vertically installed PC column 100 by fast and rigid joining,
A PC column 100 including a coupler 150 embedded in the outer surface of the column concrete, and an upper bipolar coupler fixing rib 110 'fastened to one end of the coupler 150` and embedded in the column concrete.
A PC beam 200 opened at the top so as to form a slab concrete poured portion 230 therein and including a beam concrete 210; And
A temporary bracket 300 having one end connected to the coupler 150 'by a bolt B;
, &Lt; / RTI >
After the end of the PC beam 200 is mounted on the other end of the temporary bracket 300 by pivoting the PC beam 200,
One end of the compensating end portion reinforcing bar 400 is fastened to the other end of the coupler 150 '
And the compensating part reinforcing bars 450 are reinforced at the other end of the compensating part end reinforcing bars 400,
A side board 600 is installed between the side end of the PC beam 200 and the outer surface of the column concrete and a deck plate DP is mounted on an end of the upper part of the beam concrete 210, The slab concrete (SC) is laid on the upper part of the compensating part end plate (DP), and the compensating end part reinforcing bar (400) and the compensating part reinforcing bar (450)
A step 320 protruding perpendicularly to both ends of the temporary bracket 300 is formed at an upper portion of the temporary bracket 300 so that the step 320 serves as a guide when sliding the side board 600, The reinforced concrete structure of the PC column and the PC beam using the temporary bracket installed on the PC column.

The method of claim 1,
A lower reinforcing bar connecting anchor rib 120 protruding from the outer surface of the column concrete is provided under the upper reinforcing bar coupler fixing rib 110 '
Wherein one end of a coupler (CP) is fastened to a protruding portion of the lower reinforcing bar connecting anchor lever (120) and one end of a beam lower reinforcing bar (500) is fastened to the other end of the coupler (CP) Steel Joining Structure of PC Column and PC Beam Using Brackets.

3. The method of claim 2,
The lower reinforcing bar connecting anchor rib 120 and the coupler CP are omitted,
A coupler 150 'embedded in the outer surface of the column concrete; And
A lower bobbin coupler fixing lever 120 'fastened to one end of the coupler 150' and embedded in the column concrete;
Lt; / RTI >
And one end of the beam lower reinforcing bar (500) is fastened to the other end of the coupler (150 '). The rigid joint structure of the PC column and the PC beam using the temporary bracket provided on the PC column.

delete

The method of claim 1,
At the upper end of the beam concrete 210,
A deck plate rest 280 is provided continuously or intermittently,
Wherein a deck plate (DP) is mounted at one end of the deck plate rest unit (280).

[Claim 6 is abandoned due to the registration fee.]

The method of claim 5,
The deck plate holder (280) is spaced apart from a side end of the PC beam (200) by an interval (G) to secure a working space for sliding the side board (600) by inserting the side board (600) Steel joints of PC columns and PC beams using temporary brackets.

delete

[8] has been abandoned due to the registration fee.

4. The method according to any one of claims 1 to 3,
In the PC beam 200,
The anchor bolt 250 and the stirrer 270,
One end of the beam anchor bolt 250 is embedded in the beam concrete 210 and the other end thereof is exposed to the slab concrete installation portion 230,
Wherein the stirrup (270) is exposed on the upper portion of the beam concrete (210) to guide the reinforcing end portion reinforcing bar (400). .

delete

[Claim 10 is abandoned upon payment of the registration fee.]

4. The method according to any one of claims 1 to 3,
A plate 160 'is installed on the outer surface of the column concrete,
And the other end of the coupler 150 'is exposed through the hole of the plate 160', and the coupler can be easily installed. In this case, the PC column and the PC beam using the temporary bracket installed on the PC column, rescue.

delete

[12] has been abandoned due to the registration fee.

9. The method of claim 8,
A plate 160 'is installed on the outer surface of the column concrete,
And the other end of the coupler 150 'is exposed through the hole of the plate 160', and the coupler can be easily installed. In this case, the PC column and the PC beam using the temporary bracket installed on the PC column, rescue.

[13] has been abandoned due to the registration fee.

4. The method according to any one of claims 1 to 3,
In order to install four PC beams 200 on four sides of the PC column 100,
A plurality of the upper reinforcing bar coupler fixing ribs 110 'intersect with each other at a level difference within the column concrete,
A plurality of coupler fixing ribs 130 cross each other at different level differences within the column concrete,
Wherein the coupler (150 ') is fastened to the end of the coupler fixing rib (130), wherein the coupler (150') is fastened to the PC column.

delete

[Claim 15 is abandoned upon payment of registration fee]

9. The method of claim 8,
In order to install four PC beams 200 on four sides of the PC column 100,
A plurality of the upper reinforcing bar coupler fixing ribs 110 'intersect with each other at a level difference within the column concrete,
A plurality of coupler fixing ribs 130 cross each other at different level differences within the column concrete,
Wherein the coupler (150 ') is fastened to the end of the coupler fixing rib (130), wherein the coupler (150') is fastened to the PC column.

[Claim 16 is abandoned upon payment of registration fee.]

11. The method of claim 10,
In order to install four PC beams 200 on four sides of the PC column 100,
A plurality of the upper reinforcing bar coupler fixing ribs 110 'intersect with each other at a level difference within the column concrete,
A plurality of coupler fixing ribs 130 cross each other at different level differences within the column concrete,
Wherein the coupler (150 ') is fastened to the end of the coupler fixing rib (130), wherein the coupler (150') is fastened to the PC column.

[Claim 17 is abandoned upon payment of registration fee.]

4. The method of claim 3,
In order to install four PC beams 200 on four sides of the PC column 100,
Wherein a plurality of the lower reinforcing bar coupler fixing ribs 120 'intersect with each other at a different level difference in the column concrete. .

[Claim 18 is abandoned upon payment of registration fee.]

The method of claim 17,
A plurality of the lower bobbin reinforcing coupler fixing rods 120 'may cross each other at different level differences in the column concrete,
And a plurality of lower reinforcement coupler fixing ribs 120 'are installed at the same level in the inside of the column concrete so as to be separated from each other at the same level. The rigid joining structure of the PC column and the PC beam using the temporary bracket installed on the PC column .

[Claim 19 is abandoned upon payment of the registration fee.]

4. The method according to any one of claims 1 to 3,
An angle plate (290) is disposed at an underside of an end portion of the beam concrete (210) to prevent breakage of a bottom portion of the beam concrete (210) when the bottom portion of the beam concrete (210) contacts the temporary bracket (300). Wherein the PC column and the PC beam are joined by a temporary bracket installed on the PC column.

[Claim 20 is abandoned upon payment of the registration fee.]

20. The method of claim 19,
Wherein the angle plate (290) is installed on the beam concrete (210) through an angle plate fixing anchor (295). A rigid joint structure of a PC column and a PC beam using a temporary bracket installed on a PC column.

[Claim 21 is abandoned upon payment of the registration fee.]

4. The method according to any one of claims 1 to 3,
In order to install the three PC beams 200 on three sides of the PC column 100,
A plurality of the upper reinforcing bar coupler fixing ribs 110 'intersect with each other at a level difference within the column concrete,
A plurality of coupler fixing ribs 130 cross each other at different level differences within the column concrete,
Wherein the coupler (150 ') is fastened to the end of the coupler fixing rib (130), wherein the coupler (150') is fastened to the PC column.

[Claim 22 is abandoned upon payment of the registration fee.]

22. The method of claim 21,
On one side of the PC column 100 where the PC beam 200 is not installed,
A dead-head dead anchor DA is installed at the other end of the upper bobbin reinforcing coupler fixing rib 110 'or the other end of the upper bobbin reinforcing coupler fixing rib 110' is bent to form a vertical fixing unit 110 ' ) Of the PC column and the PC beam using the temporary bracket installed on the PC column.

[Claim 23 is abandoned due to the registration fee.]

22. The method of claim 21,
A plate 160 'is installed on the outer surface of the column concrete,
And the other end of the coupler 150 'is exposed through the hole of the plate 160', and the coupler can be easily installed. In this case, the PC column and the PC beam using the temporary bracket installed on the PC column, rescue.

[Claim 24 is abandoned upon payment of the registration fee.]

4. The method according to any one of claims 1 to 3,
In order to install two PC beams 200 on two sides of the PC column 100 perpendicular to each other,
A plurality of the upper reinforcing bar coupler fixing ribs 110 'intersect with each other at a level difference within the column concrete,
A plurality of coupler fixing ribs 130 cross each other at different level differences within the column concrete,
Wherein the coupler (150 ') is fastened to the end of the coupler fixing rib (130), wherein the coupler (150') is fastened to the PC column.

[Claim 25 is abandoned upon payment of registration fee]

25. The method of claim 24,
On one side of the PC column 100 where the PC beam 200 is not installed,
A dead-head dead anchor DA is installed at the other end of the upper bobbin reinforcing coupler fixing rib 110 'or the other end of the upper bobbin reinforcing coupler fixing rib 110' is bent to form a vertical fixing unit 110 ' ) Of the PC column and the PC beam using the temporary bracket installed on the PC column.

[Claim 26 is abandoned upon payment of registration fee.]

25. The method of claim 24,
A plate 160 'is installed on the outer surface of the column concrete,
And the other end of the coupler 150 'is exposed through the hole of the plate 160', and the coupler can be easily installed. In this case, the PC column and the PC beam using the temporary bracket installed on the PC column, rescue.

[Claim 27 is abandoned upon payment of registration fee.]

A rigid joint structure of the PC column and the PC beam using the temporary bracket installed on the PC column of the first or second aspect is used,
And a plurality of prefabricated frame units (1000) in which the PC columns (100) form outer pillars,
The PC beam 200 is sandwiched between the PC columns 100 facing the plurality of frame units 1000,
Wherein a rigid joint structure of a PC column and a PC beam using a temporary bracket installed on the PC column is constructed. A modular system using a rigid joint structure of a PC column and a PC beam using a temporary bracket installed on a PC column .

[Claim 28 is abandoned upon payment of registration fee.]

28. The method of claim 27,
The frame unit 100 is coupled to the upper part of the lower column 1100,
Wherein the column lower connection plate CDP at the lower end of the PC column 100 and the column upper connection plate CUP at the upper end of the lower column 1100 are bolted to each other. Modular system using rigid joint structure of PC column and PC beam.

[Claim 29 is abandoned upon payment of the registration fee.]

29. The method of claim 28,
A hole is formed in the column lower connection plate CDP and the column upper connection plate CUP in order to accommodate a nut projected to the column lower connection plate CDP and the column upper connection plate CUP for fixing the columnar root of the column, Or,
An inter-column filler plate (PP) having a hole formed therein for receiving a nut projecting from the column lower connection plate (CDP) and the column upper connection plate (CUP) ) And the column upper connecting plate (CUP). The modular system using the rigid joining structure of the PC column and the PC beam using the temporary bracket installed on the PC column.

[Claim 30 is abandoned upon payment of registration fee.]

And the rigid joint structure of the PC column and the PC beam using the temporary bracket installed on the PC column of the claim 10 is used,
And a plurality of prefabricated frame units (1000) in which the PC columns (100) form outer pillars,
The PC beam 200 is sandwiched between the PC columns 100 facing the plurality of frame units 1000,
Wherein a rigid joint structure of a PC column and a PC beam using a temporary bracket installed on the PC column is constructed. A modular system using a rigid joint structure of a PC column and a PC beam using a temporary bracket installed on a PC column .

[31] has been abandoned due to the registration fee.

32. The method of claim 30,
The frame unit 100 is coupled to the upper part of the lower column 1100,
Wherein the column lower connection plate CDP at the lower end of the PC column 100 and the column upper connection plate CUP at the upper end of the lower column 1100 are bolted to each other. Modular system using rigid joint structure of PC column and PC beam.

[32] is abandoned upon payment of the registration fee.

32. The method of claim 31,
A hole is formed in the column lower connection plate CDP and the column upper connection plate CUP in order to accommodate a nut projected to the column lower connection plate CDP and the column upper connection plate CUP for fixing the columnar root of the column, Or,
An inter-column filler plate (PP) having a hole formed therein for receiving a nut projecting from the column lower connection plate (CDP) and the column upper connection plate (CUP) ) And the column upper connecting plate (CUP). The modular system using the rigid joining structure of the PC column and the PC beam using the temporary bracket installed on the PC column.

delete

[Claim 36 is abandoned upon payment of registration fee.]

The rigid joint structure of the PC column and the PC beam using the temporary bracket installed on the PC column of the twelfth claim is used,
And a plurality of prefabricated frame units (1000) in which the PC columns (100) form outer pillars,
The PC beam 200 is sandwiched between the PC columns 100 facing the plurality of frame units 1000,
Wherein a rigid joint structure of a PC column and a PC beam using a temporary bracket installed on the PC column is constructed. A modular system using a rigid joint structure of a PC column and a PC beam using a temporary bracket installed on a PC column .

[Claim 37 is abandoned upon payment of registration fee.]

37. The method of claim 36,
The frame unit 100 is coupled to the upper part of the lower column 1100,
Wherein the column lower connection plate CDP at the lower end of the PC column 100 and the column upper connection plate CUP at the upper end of the lower column 1100 are bolted to each other. Modular system using rigid joint structure of PC column and PC beam.

[Claim 38 is abandoned upon payment of registration fee.]

37. The method of claim 37,
A hole is formed in the column lower connection plate CDP and the column upper connection plate CUP in order to accommodate a nut projected to the column lower connection plate CDP and the column upper connection plate CUP for fixing the columnar root of the column, Or,
An inter-column filler plate (PP) having a hole formed therein for receiving a nut projecting from the column lower connection plate (CDP) and the column upper connection plate (CUP) ) And the column upper connecting plate (CUP). The modular system using the rigid joining structure of the PC column and the PC beam using the temporary bracket installed on the PC column.

delete

[Claim 40 is abandoned upon payment of the registration fee.]

The method of claim 12,
In order to install four PC beams 200 on four sides of the PC column 100,
A plurality of the upper reinforcing bar coupler fixing ribs 110 'intersect with each other at a level difference within the column concrete,
A plurality of coupler fixing ribs 130 cross each other at different level differences within the column concrete,
Wherein the coupler (150 ') is fastened to the end of the coupler fixing rib (130), wherein the coupler (150') is fastened to the PC column.

delete

[42] has been abandoned due to the registration fee.

30. The method of claim 29,
The lower pillar 1100 is bent at an upper angle of the pillar of the column to displace the center line of the pillar of the PC column 100,
A hole is separately formed in the inter-column filler plate PP to accommodate a nut for fixing the columnar root of the lower column 1100 and a nut for fixing the columnar root of the PC column 100, respectively Modular system using rigid joint structure of PC columns and PC beams using temporary brackets installed on PC columns.

[Claim 43 is abandoned upon payment of the registration fee.]

32. The method of claim 32,
The lower pillar 1100 is bent at an upper angle of the pillar of the column to displace the center line of the pillar of the PC column 100,
A hole is separately formed in the inter-column filler plate PP to accommodate a nut for fixing the columnar root of the lower column 1100 and a nut for fixing the columnar root of the PC column 100, respectively Modular system using rigid joint structure of PC columns and PC beams using temporary brackets installed on PC columns.

delete

[Claim 45 is abandoned upon payment of the registration fee.]

37. The method of claim 37,
The lower pillar 1100 is bent at an upper angle of the pillar of the column to displace the center line of the pillar of the PC column 100,
A hole is separately formed in the inter-column filler plate PP to accommodate a nut for fixing the columnar root of the lower column 1100 and a nut for fixing the columnar root of the PC column 100, respectively. Modular system using rigid joint structure of PC columns and PC beams using temporary brackets installed on PC columns.

[Claim 46 is abandoned due to the registration fee.]

30. The method of claim 29,
When the column main shaft of the lower column 1100 and the column main shaft of the PC column 100 coincide with the center line,
The thickness of the inter-column filler plate PP is not less than the sum of the thickness of the nut for fixing the columnar root of the lower column 1100 and the thickness of the nut for fixing the columnar root of the PC column 100,
And a nut for fixing the column main shaft of the lower column 1100 and a nut for fixing the column main shaft of the PC column 100 to and from above and below one hole of the inter-column filler plate PP are received Modular system using rigid joint structure of PC column and PC beam using temporary bracket installed on PC column.

[Claim 47 is abandoned upon payment of the registration fee.]

32. The method of claim 32,
When the column main shaft of the lower column 1100 and the column main shaft of the PC column 100 coincide with the center line,
The thickness of the inter-column filler plate PP is not less than the sum of the thickness of the nut for fixing the columnar root of the lower column 1100 and the thickness of the nut for fixing the columnar root of the PC column 100,
And a nut for fixing the column main shaft of the lower column 1100 and a nut for fixing the column main shaft of the PC column 100 to and from above and below one hole of the inter-column filler plate PP are received Modular system using rigid joint structure of PC column and PC beam using temporary bracket installed on PC column.

delete

[49] has been abandoned due to the registration fee.

37. The method of claim 37,
When the column main shaft of the lower column 1100 and the column main shaft of the PC column 100 coincide with the center line,
The thickness of the inter-column filler plate PP is not less than the sum of the thickness of the nut for fixing the columnar root of the lower column 1100 and the thickness of the nut for fixing the columnar root of the PC column 100,
Wherein a nut for fixing the column main shaft of the lower column (1100) and a nut for fixing the column main shaft of the PC column (100) are arranged above and below one hole of the inter-column filler plate (PP) Modular system using rigid joint structure of PC column and PC beam using temporary bracket installed on columns.

[Claim 50 is abandoned upon payment of the registration fee.]

3. The method according to claim 1 or 2,
The PC column 100 is coupled to the upper portion of the lower column 1100,
Wherein the column lower connection plate CDP at the lower end of the PC column 100 and the column upper connection plate CUP at the upper end of the lower column 1100 are bolted to each other. Steel Joint Connection Structure of PC Column and PC Beam.

[51] has been abandoned due to the registration fee.

50. The method of claim 50,
A hole is formed in the column lower connection plate CDP and the column upper connection plate CUP in order to accommodate a nut projected to the column lower connection plate CDP and the column upper connection plate CUP for fixing the columnar root of the column, Or,
An inter-column filler plate (PP) having a hole formed therein for receiving a nut projecting from the column lower connection plate (CDP) and the column upper connection plate (CUP) ) And the column upper connecting plate (CUP). The rigid joining structure of the PC column and the PC beam using the temporary bracket installed on the PC column.

[Claim 52 is abandoned upon payment of the registration fee.]

52. The method of claim 51,
The lower pillar 1100 is bent at an upper angle of the pillar of the column to displace the center line of the pillar of the PC column 100,
A hole is separately formed in the inter-column filler plate PP to accommodate a nut for fixing the columnar root of the lower column 1100 and a nut for fixing the columnar root of the PC column 100, respectively Stiff joint structure of PC columns and PC beams using temporary brackets installed on PC columns.

[Claim 53 is abandoned upon payment of the registration fee.]

52. The method of claim 51,
When the column main shaft of the lower column 1100 and the column main shaft of the PC column 100 coincide with the center line,
The thickness of the inter-column filler plate PP is not less than the sum of the thickness of the nut for fixing the columnar root of the lower column 1100 and the thickness of the nut for fixing the columnar root of the PC column 100,
And a nut for fixing the column main shaft of the lower column 1100 and a nut for fixing the column main shaft of the PC column 100 to and from above and below one hole of the inter-column filler plate PP are received Steel joints of PC columns and PC beams using temporary brackets installed on PC columns.