KR100383795B1 - connection structure of fixing and connecting steel girder in reinforcement concrete column and construction method - Google Patents

Abstract

The present invention relates to a connection structure for connecting and fixing a steel girder (steel girder or steel beam) to a reinforced concrete column and a construction method thereof.

Reinforced concrete structures are inexpensive and have excellent compressive stress, making them suitable for pillar materials. I and H-shaped steel structures have excellent bending stress and shear stress, and are easy to assemble and install by bolts or welding. do.

The present invention relates to a connection structure and construction method of the building to make the reinforced concrete structure as a column, and to constitute the skeleton of the building with steel aggregates, and to the steel connection member for fastening the steel beams on the RC or PC pillar with bolts Fixing the upper pillar having a PC or RC column above, to connect the cheolgolbo to the steel connection member, and to tighten the steel rods formed in the interior of the RC or PC pillar to form a plurality of steel rods, and to connect the concrete thereon The present invention relates to a connection structure for constructing a structure of a building by connecting and assembling a steel frame beam of a building with a steel connection member embedded in the upper pillar by pouring it.

Description

Connection structure of fixing and connecting steel girder in reinforcement concrete column and construction method

The present invention relates to a connection structure for connecting and fixing steel girder (steel girder or steel beam) to RC or PC reinforced concrete pillars and a construction method thereof.

RC (reinforce concrete) or PC (precast concrete) reinforced concrete structures are inexpensive and have excellent compressive stress, so they can be used as pillars of buildings, but they are not good in shear and bending stress. When used as a beam, it can be seen that the volume is enlarged.

It can also be seen that the devices and means for connecting the reinforced concrete beams to the columns are not appropriate. On the other hand, buildings using H or I-shaped steel frame as columns or beams can be easily connected by assembling columns and beams by welding or assembling the connecting parts, thereby shortening the construction period. It can be seen that the cost of steel frames is higher than that of reinforced concrete structures, resulting in higher construction costs.

The present invention is excellent in the compressive stress, relatively low-cost RC or PC reinforced concrete structure as a column, excellent bending stress and shear stress, easy to assemble easy connection by bolt or welding H or easy to assemble It is a combination of the advantages of reinforced concrete structures and the advantages of steel aggregates with type I steel aggregates, and suggests the connection structure and construction method for connecting and fixing steel beams to reinforced concrete columns.

In general, the reinforced concrete structure can be seen in the construction site, RC reinforced concrete structure with the formwork and the reinforcement in the inside of the reinforcement, in addition, PC reinforced concrete structure that is produced in advance in the factory and transported and installed to the site Can be seen.

Since PC reinforced concrete is produced under strict production control in a separate factory, not at the work site, it is possible to obtain a high-quality structure, and it can be mechanized by installing and transporting it on site. Can be.

The present invention constructs a column by constructing a conventional RC reinforced concrete structure or PC reinforced concrete structure at a predetermined height, and installs and fixes a connection member for assembling a steel golbo bolt to the upper end of the steel girder or steel beam. ) Is assembled with bolts to create the skeleton of the building.

As mentioned above, the RC reinforced concrete structure to be cast in the field or the PC reinforced concrete structure uniformly manufactured in the factory is formed as a pillar of the building, and the beam is connected to and installed to form the skeleton of the building. Appropriate techniques for connecting and joining the transverse members are required.

In other words, in order to connect the beam to the PC or RC column, the reinforced concrete column is made by protruding the connecting steel or connecting steel to the column, and the protruding steel or the connecting steel and the steel bar protruding at the end of the beam are welded or tied together. It was found that the connection was fixed and the connection part was poured with concrete to connect the reinforced concrete columns and beams.

As described above, the method of connecting the reinforced concrete columns and beams includes the following problems.

In other words, in order to sufficiently cover the weight of the reinforced concrete pillars stacked on the upper part of the concrete prior to placing the connection at the connection part, the work is very demanding and there is a technical difficulty to work for a long time. In case of fixing the reinforcing bars from the main reinforcing bars and beams overlapping, additional connection reinforcing bars are required as overlapped parts, and the overuse of materials can be seen. It can be seen that there is a possibility that a separate defect will occur.

The present invention has been made to solve all the problems caused by the connection connection of the beam to the conventional reinforced concrete column, it has excellent compressive strength, using a relatively low-cost reinforced concrete structure as a pillar of the building and flexural strength and shear steel Reinforced concrete that is excellent in quality, uses steel aggregates that are easy to assemble and connect like bolts and welding, and maintains light weight and high strength while reducing construction period, reducing construction cost, and obtaining high quality building structures. The present invention relates to a connection structure for fixing and fixing a steel ball to a column, and a construction method thereof.

The present invention proposes a connection structure and a connection construction method for connecting beams to pillars that are skeletons of a building structure, to obtain a solid and excellent building structure and to shorten the construction period, material savings, reliability building structure It was created. The present invention is to form a reinforced concrete structure (RC column) or a reinforced concrete structure (PC column) planned in the factory to a predetermined height to form a pillar of the building and connecting the connection to the steel cheolgolbo fastened with bolts at the upper end The pillar top structure is provided to allow the steel structure to be integrally fixed to the upper end of the column body. In particular, the connection steel structure and the pillar body fastening and fixing to the upper end of the column body have a firm fixing force. Of course, it is to provide a reinforced concrete structure (PC column or RC column) and a connection structure and a construction method for connecting the cheolgolbo integrally to it can enhance the reliability of the quality of the structure.

Figure 1a-connecting member for connecting the cheolgolbo on the concrete pillar in the present invention

A perspective view showing the assembly of a buried upper pillar.

Figure 1b-showing the state connected to the cheolgolbo on the concrete pillar in the present invention

Partial combined perspective.

2 is a cross-sectional view of a PC column used in the present invention.

Figure 3-In the present invention, the concrete pillar and the upper portion of the steel connection member embedded therein

Sectional view with columns combined.

Figure 4-Flat section of the steel connection member mounted on the concrete pillar in the present invention

Degree.

5-Steel frame of the steel connection member installed on the concrete pillar in the present invention

Perspective perspective view of part only.

Figure 6-Process drawing showing the casting of foundation concrete in the present invention.

Figure 7-In the present invention to install a height adjustment block on the foundation concrete

Flow chart shown.

8-Assembling and installing the lower PC column on the foundation concrete in the present invention

Flow chart shown.

Figure 9-Concrete by installing the upper PC column on the lower PC column in the present invention

Process diagram showing formation of pillars.

Figure 10-In the present invention to install the upper PC pillar on the concrete pillar

Flow chart shown.

11-Assembling the cheolgolbo between the upper PC column and the upper PC column in the present invention

Flow chart shown.

Figure 12-Process showing the installation of slabs in the structure produced by the present invention

Degree.

Fig. 13-Process drawing showing assembling and installing a two-layer PC pillar for the present invention.

14-Assembling a two-layer upper PC pillar on a two-layer PC pillar in the present invention.

Flow chart shown.

Figure 15-In the present invention is shown to assemble a two-layered cheolgolbo on the two-layer PC pillar

Process diagram.

Figure 16-In the state of assembling the two-story ceiling beams on the two-story pillar in the present invention

Process diagram.

17 is a process diagram showing the completion of a multilayer structure in the present invention.

The foundation concrete 11 is placed on the target surface of the construction site, and the reinforced concrete column 12 (RC column or PC column) is installed thereon with a predetermined height, and the plurality of steel bars inside the reinforced concrete column 12 are installed. (13) and a plurality of reinforcing bars (14), and each of the steel bar (13) and the lower ends of the reinforcing bars (14), the base steel bar (11-1) and the basic reinforcing bar (11-1) embedded in the base concrete (11) -2) is integrally connected with the upper end of the steel bar 13, the thread 13-1 is formed, the upper end of the thread 13-1 and the plurality of reinforcing bars 14 of the upper end of the steel bar 13 After protruding out of the concrete column 12, the upper end of the steel bar 13 protruding above the upper surface of the reinforced concrete column 12 is inserted through the fastening hole 36 of the bottom of the steel connection member 32, and then the nut 37 Fixed to the upper end of the connecting rod 33, which is overlaid with a rod inserting tube 33-1 on the upper end of each steel bar 13, respectively. (21) fastened and fixed to the end of the reinforcing bar (14) protruding over the upper surface of the reinforced concrete column (12) and fixed with the connecting bar (34), and attached by welding the side of the steel connecting member (32) After fixing the iron strip 35 and the connecting reinforcing bars 34, form the formwork to the outside of the iron strip (35), and cast concrete to the concrete upper pillar 31 is embedded steel frame connecting member 32 In addition, the fastening hole of the end of the steel frame connecting member 32 protruding to the side of the concrete upper pillar 31 and the end of the cheolgolbo 51 is fixed by bolts to form the structure of the building.

In the above, the upper end of the connecting steel rod 33 and the connecting reinforcing bar 34 embedded in the upper concrete column 31 connected to the steel rod 13 and the reinforcing bar 14 of the concrete column 12 is the upper concrete column 31 ) To be projected onto the upper surface to fix the upper concrete column 31 or assembling another upper function.

In the above, the steel connection member 32 embedded in the concrete upper pillar 31 has an I-shaped or H-shaped cross section similar to the steel aggregate, and at the end thereof, a plurality of fastening holes and steel girder or steel girder (steel girder or steel). The bolt is coupled to the fastening hole formed at the end of the beam (51).

In addition, the reinforcing bar connecting member 32 embedded in the concrete after being placed above the reinforced concrete column 12, the concrete is formed in the cross shape having four fastening ends as shown in Figure 1a Or, it consists of three fastening ends, such as the "T" shape, or consists of two fastening ends, such as " - " or "a" shape.

That is, the shape of the fastening end of the steel connection member 32 is different in the number and shape of the fastening end according to the connection position of the column and beam.

Reinforced concrete pillars 12 used in the present invention is applicable to both RC columns and PC columns, but the drawings were made for the example of the PC column, and the construction of the present invention by the drawings in more detail and simultaneous construction process Looking at the present invention as follows.

That is, the foundation concrete block 11 is formed on the target surface, and the foundation concrete block 11 is formed to expose the upper ends of the plurality of foundation steel bars 11-1 and the foundation reinforcing bars 11-2 therein, ( 6) After installing the height adjustment kick block (kick block) on the base concrete block 11 (see Fig. 7), the lower PC column 12-1 is placed, the lower PC column 12-1 On the inner side, the steel bar 13 is inserted into the steel rod insertion tube 15, and a plurality of reinforcing bars 14 inserted with the sleeve 16 are embedded, and the steel bar 13 of the lower PC column 12-1 and Reinforcing bars 14 and foundation concrete blocks 11 embedded in the lower PC column 12-1 to be integrally fastened to the foundation steel bar 11-1 of the foundation concrete block 11 by the connector 21 at the same time. After connecting the basic reinforcing bar 11-2 protruding upward with the sleeve 22 and tensioning the steel bar 13 embedded in the inner rod insertion tube 15 of the lower PC column 12-1, PC column fixing nut Fix the steel rod 13 to the base concrete block 11 by fastening the steel bar 13 with (19). (See Fig. 2 and Fig. 8).

Thus, the reinforced concrete column 12 by fastening and fixing the upper PC column 12-2 on the lower PC column 12-1 in the same manner as the method of coupling the foundation concrete block 11 and the lower PC column 12-1. ), (See Fig. 9) to form a concrete upper pillar 31 in which the steel connection member 32 is inserted therein (see Fig. 10).

In the above, it is represented in the drawings that the PC pillar 12 installed on the foundation concrete block 11 is divided into two, the lower PC column 12-1 and the upper PC column 12-2. In addition, the PC pillar can be formed as one, and the number of upper, middle and lower three or more is also possible.

In other words, the PC pillar is produced at the factory, causing problems of transportation to the construction site.In accordance with the conditions of transportation, PC pillars are made of one column or divided into more than one. After that, it is subsequently formed a PC pillar.

As described above, the steel connecting members 32 fixed above the PC pillars 12, which are the lower and upper PC pillars 12-1 and 12-2, which are assembled and assembled with each other, are embedded in the steel frame connecting members. 32 is a cross-shaped cross-section formed in the four directions, the "L" shape, the "L" shape formed in two directions of the fastening portion and the "T" shape formed of the fastening portion in three directions, such as various forms of steel connection member ( After the 32 is fixed to the reinforced concrete column 12, fixed to the side of the steel connection member 32, the "a" shaped iron braid 35 is attached by welding, the iron braid 35 and the connecting reinforcement ( 34) to be fixed by welding or connecting straps, the formwork is installed outside the iron strip (35), and the concrete is poured steel connection member 32 is embedded in the upper pillar 31 of the concrete block chain.

In addition, a reinforced concrete column (RC column) is formed on the target surface without forming the reinforced concrete column as a PC column as described above, and a reinforced concrete column is formed at a predetermined height by embedding a plurality of steel bars therein. Fixes the bottom of the steel connection member 32 with a nut 37 to the thread of the steel bar 13 protruding to the upper end surface of the column with a nut 37, and casts the formwork outside the steel strip (35) formed on the outside of the steel connection member (32) Then, to pour concrete to form a concrete upper pillar with the steel connection member 32 embedded in the inside, and connects the cheolgolbo 51 to the end of the steel connection member 32 may constitute a structure of the building.

In the above, the steel threaded connection member 13-1 of the upper end of the steel rod 13 protruding to the end of the PC or RC reinforced concrete pillars 12 for a firm fixing between the steel connection member 32 and the pillar 12 (32) After inserting through the bottom fastening hole 36, the steel bar 13 is pulled out and tensioned, and then fixed to the steel connecting member 32 with a washer and nut 37.

After the concrete is cured, the formwork is removed and the cheolgolbo 51 is placed on the steel connection member 32 protruding from the side of the concrete upper pillar 31, and then the cheolgolbo (51) using bolts, nuts, plate, etc. ) Is fixed to the end of the steel connection member 32 to complete the structure of the building. (See Figs. 10 and 11)

In the same way, that is to build the upper layer through the process of assembling with another PC pillar or RC pillar on the concrete upper pillar (31). (See Figures 13, 14, 15, 16, 17)

As described above, the present invention will be used as a reinforced concrete column irrespective of the PC column or RC column, the steel column to the upper column inserted into the steel column connecting member inserted into the upper portion of the reinforced concrete column, easy to bolt, easy to assemble Will be.

In constructing a building, RC and PC reinforced concrete are inexpensive and have good compressive strength, making them suitable for pillar materials.I-shaped or H-shaped steel aggregates are easy to be assembled and assembled by bolts or welding, instead of expensive. And it can be seen that it is suitable as the material of the beam rather than the pillar material because of the excellent shear strength, but it has difficulty in the design of the composite structure of the reinforced concrete column and the steel aggregate because the conventional means and device for connecting the steel aggregate to the concrete column You can see that.

However, as in the present invention, when the steel connection member is embedded inside the PC or RC pillar to secure the tensile strength by the steel rod to secure it with the concrete pillars to secure the structural strength, even if the beam is connected and assembled, sufficient support force In particular, due to sufficient coupling force and supporting force with the beam, the long span span can be easily fastened and fixed by the distance from the column to the column. In particular, it is a very useful invention that can reduce the overall construction cost because the construction period is short.

Claims (4)

The foundation concrete 11 is placed on the target surface of the construction site, and the reinforced concrete column 12 (RC column or PC column) is installed thereon with a predetermined height, and the plurality of steel bars inside the reinforced concrete column 12 are installed. (13) and a plurality of reinforcing bars (14), and each of the steel bar (13) and the lower ends of the reinforcing bars (14), the base steel bar (11-1) and the basic reinforcing bar (11-1) embedded in the base concrete (11) -2) is integrally connected with the upper end of the steel bar 13, the thread 13-1 is formed, the upper end of the thread 13-1 and the plurality of reinforcing bars 14 of the upper end of the steel bar 13 The steel rod 13 protruding out of the concrete pillar 12 and projecting over the top surface of the reinforced concrete pillar 12 is inserted through the fastening hole 36 in the bottom of the steel connection member 32, and then the nut 37 The lower end of the connecting steel rod 33, which is overlaid with a steel rod insertion tube 33-1, on the end of each steel rod 13, Fixing and fixing the end of the reinforcing bar (14) protruding over the upper surface of the reinforced concrete column (12) with the connecting bar (34), the steel strip (35) attached by welding with the side of the steel connecting member (32) ) And the connecting reinforcing bars 34, and form the formwork on the outside of the iron strip (35), and cast concrete to form a concrete upper pillar (31), and the cheolgolbo (end) in the end of the steel connecting member (32) A connecting structure for connecting and fixing the cheolgolbo to the reinforced concrete column, characterized in that to fasten the end of the 51) with a bolt to form the structure of the building. The steel reinforcing bar member of claim 1, wherein the steel connecting member 32 has an I-shaped or H-shaped cross section like steel aggregate, and a plurality of connecting ends protrude from each other, and has a plurality of fastening holes at its ends. Connection structure for fixing steel cheolgolbo to concrete columns. The foundation concrete block 11 is formed on the target surface, and the foundation concrete block 11 is formed to expose the upper ends of the plurality of foundation steel bars 11-1 and the foundation reinforcing bars 11-2 therein, and the height is thereon. After installing the adjusting kick block (kick block) (41), the lower PC column 12-1 is placed, the lower PC column 12-1 is a steel bar 13 inside the steel bar insertion tube (15) A plurality of reinforcing bars 14 inserted into the sleeve 16 and inserted into the sleeve 16, and are embedded in the steel rods 13 of the lower PC pillar 12-1 and the basic steel bars 11-1 of the foundation concrete block 11. To the connector 21, and at the same time the sleeve 22 to the reinforcing bar 14 embedded in the lower PC column 12-1 and the foundation reinforcing bar 11-2 protruding above the foundation concrete block 11; Tension the steel rods (13) embedded in the lower PC column (12-1) inner rod insertion tube (15), and then tighten the steel rods (13) with nuts (19). Based on PC pillar 12-1 It is fixed to the crete block 11, and fastened and fixed with the upper PC column 12-2 on the lower PC column 12-1 in the same manner to form a reinforced concrete column 12, and then the steel connection member 32 thereon ) And put the upper end of the steel bar 13 protruding over the reinforced concrete column 12 into the fastening hole 36 of the bottom of the steel connection member 32, and then fixed with a nut 37, the reinforced concrete column (12) connecting and fixing the connecting reinforcing bar 34 to the end of the reinforcing bar 14 protruding upwards, and attaching the reinforcing bar 35 by welding to the reinforcing bar connecting member 32, outside the reinforcing bar 35 After forming the formwork, and after pouring concrete to form a concrete upper pillar (31), the reinforcing bars characterized in that the structure of the building by assembling and connecting the end of the steel connection member 32 and the end of the cheolgolbo 51 with bolts Construction method of connecting and fixing reinforced beams to concrete columns. According to claim 3, Reinforced concrete pillars (RC column) is formed on the target surface, a plurality of steel rods are embedded therein to form a reinforced concrete pillar at a predetermined height, the thread of the steel rod protruding to the column top surface Fixing the bottom of the steel connection member with a nut, and cast the formwork outside the steel strip formed on the outside of the steel connection member, and then poured concrete to form a concrete upper pillar with steel connection members embedded in the inside, the steel connection member Construction method for connecting and fixing the cheolgolbo to the reinforced concrete column, characterized in assembling the structure of the building by connecting the cheolgolbo to the end.