JPH0678402U - Precast concrete beam-column joint structure - Google Patents

Abstract

(57) [Summary] [Purpose] Precast concrete columns and beams are joined easily, quickly and firmly. [Structure] The upper and lower columns 1A and 1B are provided with recesses 3, and the front, rear, left and right beams 2C and 2D are provided with rods 4, respectively.
And join the columns and beams made of precast concrete.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a column-beam joint structure for constructing columns and beams, which are structural members of RC and SRC structures, with precast members.

[0002]

[Prior art]

 When constructing a building using columns and beams of precast members, the reinforcing bars protruding from the ends between the pieces are joined by various methods, and then concrete is placed at the joints.

[0003]

[Problems to be solved by the device]

 By the way, the purpose of making the members PC is to use concrete members, which are inexpensive to manufacture, and to construct them as fast as steel frame assembly.

However, in the conventional construction method, it is necessary to support another temporary structure, such as a pipe support and a temporary beam, until the concrete cast into the joint exhibits a predetermined strength.

[0007] Therefore, there is a structure in which a joint can be joined with the same ease as that of a steel frame, and at least several stories above the joint can be built without waiting for the strength of concrete to develop. If so, the benefits of using a PC will be maximized.

[0006] Therefore, the present invention has been made for the purpose of providing a precast concrete column-beam joint structure that can meet such demands.

[0007]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a structure in which column beams made of precast concrete are joined, and at least four recesses are provided at the joining ends of the upper and lower columns respectively in the axial direction of the columns, and the front, rear, left and right beams are also provided. A precast concrete column-beam joint structure is provided with rods that fit into the recesses of the upper and lower columns, respectively, and the recesses of the upper and lower columns and the rods of the front, rear, left, and right beams are fitted to each other at the joint ends of.

[0008]

[Action]

 First, build the lower pillar. Next, the rods of each beam are fitted into the recesses of the lower column where the beams on the front, rear, left, and right were installed at the installation destination. Next, the recesses of the upper column are fitted into the rods of each beam in which the upper column was built at the installation destination. In this way, the columns and beams are joined and concrete is placed in the joints.However, since the joint structure between columns and beams is strong, it is possible to construct several stories above the joint without waiting for the concrete strength to develop. Can be included.

[0009]

【Example】

 1 to 5 show an embodiment of the present invention, in which both columns and beams are columns and beams made of precast concrete. At the joint ends of the upper and lower pillars 1A and 1B, four recesses 3 formed in the axial direction of the pillars are provided, and at the joint ends of the front, rear, left and right beams 2A, 2B, 2C and 2D, the upper and lower pillars are formed. Bars 4 are provided which fit into the recesses 3 of 1A and 1B, respectively.

In the assembly procedure, first, the lower pillar 1A is built. Then, the rods 4 of the beams 2A, 2B, 2C, and 2D are fitted into the recesses 3 of the lower column 1A in which the beams 2A, 2B, 2C, and 2D on the front, rear, left, and right are installed at the installation destination. Next, the recesses 3 of the upper pillar 1B are fitted to the rods 4 of the beams 2A, 2B 2, 2C, and 2D in which the upper pillar 1B has been built. Concrete is placed at the joint between the columns and beams thus joined.

In the embodiment described above, the number of the recesses 3 formed in the pillar 1 is four corresponding to the front, rear, left and right beams 2, and the number of the rods 4 provided on the beams 2 is one for each beam. However, in the example of FIG. 6, two recesses 3 are provided on the column 1 for each beam, that is, two recesses 3 are provided on the beam 2, and two rods 4 are provided correspondingly to the beam 2.

In the example of FIG. 7, the rods 4 provided on the beam 2 are divided into those for upper columns and those for lower columns.

[0013]

[Effect of device]

 The connection between the columns and the beams can be performed simply by fitting the recesses provided at the connection ends of the columns and the rods provided at the connection ends of the beams. Therefore, assembling a steel frame using precast concrete columns and beams is just as easy. It can be installed quickly. In particular, since no other joining means such as bolts and nuts are used for joining the columns and beams, it is possible to perform the construction more easily and quickly without the need for tightening work. In addition, since the beam-column joint is strong by itself, it is possible to build several floors at least above the beam-joint without waiting for the strength of the concrete placed in the beam-column joint to develop. . This maximizes the merit of using PC for columns and beams. In addition, the recess provided at the joint end of the pillar can be easily prepared by inserting an appropriate rod at the joint end and removing the rod after solidification of the concrete when manufacturing a column made of precast concrete. It can be formed at low cost.

[Brief description of drawings]

FIG. 1 is a front view before joining precast concrete column beams.

FIG. 2 is a plan view of FIG.

FIG. 3 is a front view in which precast concrete column beams are joined together.

FIG. 4 is a plan view of FIG.

FIG. 5 is a front view showing a part of a main portion in section.

FIG. 6 is a plan view of another example before joining precast concrete column beams.

FIG. 7 is a plan view of another example of a beam joint portion.

[Explanation of symbols]

 1A, 1B ... Pillars 2A, 2B, 2C, 2D ... Beams 3 ... Recesses 4 ... Rods

Claims (1)

[Scope of utility model registration request] 1. In a structure in which column beams made of precast concrete are joined, at least 4 joints are provided at the joining ends of the upper and lower columns.
Individual recesses are provided in the axial direction of the column, and rods that fit into the recesses of the upper and lower columns are provided at the joint ends of the front, rear, left, and right beams, and the recesses of the upper and lower columns and the rods of the front, rear, left, and right beams are respectively provided. A precast concrete beam-column joint structure characterized by being fitted together.