JPH0680248B2 - Joint construction method for steel pipe and dissimilar shaped members - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention connects a steel pipe such as a case for connecting an H-shaped steel strut to a steel pipe and a member having a different shape such as a shaped steel or connecting a steel pipe with a different diameter. A joint construction method at the time.

"Prior Art" A conventional method for connecting a member having a different shape or a steel pipe having a different diameter to a steel pipe will be described below with reference to FIG. 2 showing the case where an H-shaped steel column is connected to a steel pipe pile.

i) Placing the steel pipe pile 1 in the ground.

ii) Cut the top of the steel pipe pile to the required height.

iii) The rib plate 3 is attached to the steel pipe 1 by welding.

iv) The top plate 4 is attached to the upper surface of the steel pipe 1 and the rib plate 3 by welding.

v) Weld the H-section steel 2 to the top plate 4.

The above five steps of work are performed to complete the connection between the steel pipe 1 and the H-shaped steel 2.

"Problems to be solved by the invention" However, in such a conventional construction method, the horizontal welding of the rib plate 3, the upward welding of the top plate 4, the H-shaped steel 2
From 3 types of difficult negative welding such as downward welding, it is necessary for the operator to perform on-site manual welding, which is at risk of electric shock, burns, etc., resulting in low reliability of strength and quality, and a long process. However, there are drawbacks such as the process being affected by the weather.

"Means and Actions for Solving Problems" The present invention has been made in view of the above circumstances, and the gist thereof is to provide a steel pipe pile or the like with differently shaped members having different sizes and shapes at the top of the pile. A construction method when connecting, prepare an adapter consisting of a steel pipe ring having the same diameter as the pile top portion that has been grooved at the other end while fixing the dissimilar shaped member through the top plate at one end, After being placed in the ground, attach a backing metal to the top of the pile adjusted to the required height and install an adapter with the dissimilar shaped member fixed with the groove processed part of the steel pipe ring facing down. After that, the top of the pile and the lower end of the adapter will be connected by semi-automatic or full-automatic welding, increasing the number of parts that can be manufactured in the factory, reducing the number of construction sites on site, and reliable welding only. The point is to improve the reliability of the disassembly and connection points.

[Example] Hereinafter, this will be described in detail with reference to the drawings.

1 (a) to 1 (c) are component drawings, assembly drawings, and completed drawings of the present invention shown in the case of connecting a steel pipe and an H-shaped steel strut according to FIG. 2, and in FIG. H-shaped steel column, 6 is the column 5
It is a steel pipe ring having the same diameter as the steel pipe pile 9 which is the body to be connected, in which the fixing top plate 7 is welded all around the top and the groove 8 is applied to the lower end, that is, an adapter.

With these parts, the column 5 is attached to the top plate 7 by welding as shown in the upper diagram of FIG.

This ends the in-house work.

On the other hand, the steel pipe pile 9 is cast on site, and its top is cut and adjusted to a required height. Then, the groove 10 is processed as required as shown in the lower diagram of FIG. A, but normally only the groove on the adapter side is sufficient.

When the preparation of the adapter side and the steel pipe pile side is completed in this way, a backing metal 11 is attached to the top of the steel pipe pile, and the groove 5 of the steel pipe ring 6 is turned down as shown in the figure below in FIG.
Install the fixed adapter. In this state, the top of the steel pipe pile and the entire circumference of the lower end of the adapter are connected by semi-automatic or automatic welding to complete the work.

In addition, instead of the steel pipe pile, a precast concrete pile is placed, and a steel plate may be wound around the top of the precast concrete pile to connect differently shaped members like the steel pipe pile, but the present invention is applicable to such cases. Of course, it is applicable.

As described above, in the present invention, most of the joints are produced in the factory and are made into adapters, so that the work at the site is performed only by simple welding of the steel pipes.

Moreover, since this welding is performed only by semi-automatic or full-automatic welding only in the circumferential direction of the pipe, the joint portion is highly reliable, and safe and quick connection work is performed.

Then, it is completed as shown in the plan view c and elevation view.

[Advantages of the Invention] As described above, according to the present invention, the connection between the steel pipe and the other member can be performed safely and in a short period of time.
By eliminating the spots for manual welding at the site, the reliability of the strength and quality of the joint is greatly improved.

The details are listed below.

i) Improvement of safety by reducing on-site welding points ii) Shortening of process by reducing on-site welding points iii) Removal of on-site manual welding points
Improved quality reliability

[Brief description of drawings]

1 (a) to 1 (c) are parts showing the construction method of the present invention, assembly, a completed drawing, and FIGS. 2 (a) and 2 (b) are elevations and plan views of the conventional construction explanation. 1 ... Steel pipe pile, 2 ... H-shaped steel, 3 ... Rib plate, 4 ... Top plate, 5 ... H-shaped steel column, 6 ... Steel pipe ring, 7 ... Top plate, 8 ... Groove processing, 9 ... Steel pipe (pile) ), 10… groove processing, 11… backing metal, 12… fully automatic welding.

Claims (1)

[Claims] 1. A construction method for connecting dissimilar shaped members of different sizes and shapes to the top of a pile such as a steel pipe pile, wherein the dissimilar shaped member is fixed to one end via a top plate and the other end is fixed. Prepare an adapter consisting of a steel pipe ring with the same diameter as the pile top processed into a groove, and after placing it in the ground, attach a backing metal to the pile top adjusted to the required height and steel pipe A steel pipe and a dissimilar shape member characterized in that an adapter having the dissimilar shape member fixed thereto is built with the groove processed portion of the ring facing downward, and thereafter the top of the pile and the lower end of the adapter are connected by semi-automatic or fully automatic welding. Joint construction method with.