JPS63197736A - Pin connection method of pc beam - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a pin joining method for PC beams.

(Prior Art) Figures 5 to 7 show a conventional method of joining a PC beam to a column, in which a base plate (2) is attached to the bottom surface of the end of a PC beam (1).
), and after embedding the anchor bolt (5) in the PC beam support bracket (4) of the column (3), insert the anchor bolt (5) into the hole made in the base plate (2).
was inserted, and tightened with double nuts (6).

In the figure (the force is a side play that is set up above the base plate (2) and pinches both sides of the end of the PC beam (1)), (8)
is 1-smortar, (9) is base play) Anchor muscle for anchoring.

(Problems to be Solved by the Invention) In the conventional method, it takes time and effort to embed the anchor bolts, and it is difficult to align the anchor bolts with the through holes in the base plate, resulting in reeds, and There were problems such as being expensive and requiring time and effort to attach it to the PC beam.

(Means for Solving the Problems) The present invention was proposed in order to solve these problems, and includes embedding a splice sleeve in a PC beam support bracket provided on a column, and also installing a splice sleeve inside the sleeve. This relates to a pin joining method for PC beams, which is characterized in that, after filling with mortar, large-diameter reinforcing bars planted on the lower surface of the ends of the PC beams are dropped.

(Function) In the present invention, a splice sleeve is buried in advance at a predetermined position of a PC beam support bracket provided on a column, and after filling the splice sleeve with mortar, a splice sleeve is embedded in advance on the lower surface of the end of the PC beam. By dropping large diameter reinforcing bars and seating the PC beam on the bracket, the same P
The large-diameter reinforcing bars of the C beam are fixed to the splice sleeve within the sleeve through mortar, and the PC beam is pin-joined to the column.

(Effects of the Invention) According to the method of the present invention, the inner diameter of the splice sleeve embedded in the PC beam support bracket provided on the column is equal to the larger diameter of the lower surface of the PC beam end to be fitted into the sleeve. Since it has a larger diameter than reinforcing bars, it is easier to perform multiple joints than the conventional PC beam joining method using anchor bolts and base plates, and work efficiency is improved since there is no need to tighten nuts of anchor bolts. Furthermore, since no steel frame is used,
Improves performance as a reinforced concrete structure.

(Example) The present invention will be described below with reference to the illustrated embodiments.

αυ is a PC beam, and a large-diameter reinforcing bar α is installed in advance on the lower surface of its end.

QJ is a PC column or RC column, αa is a bracket for supporting a PC beam protruding from four pillars αJ, and a splice sleeve α9 having an inner diameter larger than the outer diameter of the large-diameter reinforcing bar α is prepared in advance.
is buried in advance.

Then, the sleeve α4 is filled with mortar in advance, and the base mortar ae is spread evenly on the bracket α, and then the large diameter reinforcing bar α of the PC beam αυ is dropped into the sleeve α, and the PC The end of the beam αD is seated on the bracket α4, and the PC beam αυ is pin-joined to the PC column Q3.

In this way, according to the embodiment, the large-diameter reinforcing bar α erected on the lower surface of the end of the PC beam αυ is connected to the PC beam supporting bracket α
, well pre-buried and mortar-filled large-diameter reinforcing bars (splice sleeves α with an inner diameter larger than one
Since the pin connection of the PC beam I is performed by dropping the pin into the anchor bolt, there is no need to tighten the nuts of the anchor bolts as in the conventional method, and there is no need to tighten the nuts of the anchor bolts as in the conventional method. There is no difficulty in aligning the center with the bolt hole of the PC beam, and work efficiency is significantly improved.
11) Since it is only necessary to plant a large-diameter reinforcing bar az on the lower surface of the end, the structure is simpler and the cost can be significantly reduced compared to the above-mentioned conventional method of anchoring the base plate in the recess. .

[Brief explanation of the drawing]

FIG. 1 is a side view showing the implementation status of one embodiment of the pin joining method for PC beams according to the present invention, and FIGS. 2, 3, and 4 respectively show PC beams constructed by the method of the present invention. A side view, a plan view, a front view, and a front view showing the pin joint of the
They are a side view, a plan view, and a front view of a pin joint part of a C beam. (II)...PC beam a...large diameter reinforcing bar α
J...PC column αno...PC beam support bracket α9...Splice sleeve agent Patent attorney Shige Okamoto 2 people outside of the text Figure 2 Figure 3 Figure 4 Figure 5 Figure 7 Figure 6 figure

Claims (1)

[Claims] A PC beam characterized by embedding a splice sleeve in a PC beam support bracket provided on a column, filling the sleeve with mortar, and then dropping a large diameter reinforcing bar planted on the lower surface of the end of the PC beam. Pin joining method.