JPH09123801A - Steel beam equipment - Google Patents

Abstract

(57) [Abstract] [Problem] The construction of the gate-shaped steel pipe beam was done by preparing one with both legs integrated in advance, and hoisting this to lower it to the prescribed position, but this will facilitate construction. For,
First of all, both columns will be erected with concrete pipes, and the horizontal beam will be placed on it. [Solution] First, the pillar 1 of the concrete pipe is erected. One side of the bent tube 3 is fixed to both ends of the horizontal beam 2, and a small diameter tube 3a that can be inserted into the column 1 and a collar 3b that can be locked at the edge of the column are provided on the other side. It is lifted and lowered onto the pillar. Cement milk is filled in the voids at the inner and outer bottoms of the inserted small-diameter pipe and solidified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gate-shaped steel pipe beam device that traverses a railroad track, and an object thereof is to facilitate construction work.

[0002]

2. Description of the Related Art A gate-shaped beam is constructed by connecting a plurality of horizontal members with flanges and fixing vertical legs to both ends thereof. However, since it is difficult to connect each member in the air, it is tentatively aside. The method is to lift and lower the connection molded product in the open space to the designated position, or first plant the vertical legs at both ends in the ground, and then connect the horizontal beam through the bent pipe. Was there. However, in the former method, the lower track is 3
When it comes to ~ 4 lanes, the connected horizontal members are about 20 m long. The legs at both ends are 7 to 8 meters high and heavy. The beam bends due to the weight of the legs. It is extremely difficult for a skilled person to lift this and place both legs at the predetermined position. Further, in the latter method, the connection bolt holes of the connection flanges of the respective members may not match due to installation error and bending of the steel pipe, and welding connection may be unavoidable.

[0003]

[Means for Solving the Problem] A pedestal is erected in advance at a predetermined position with a concrete pipe. The horizontal sides of the hook-shaped bent tube are fixed to both ends of the horizontal beam. Depending on the height of the pedestal, another vertical steel pipe may be connected to the vertical side of the hook-shaped bent pipe. The vertical side of the bent pipe or the end of the vertical steel pipe may be a small diameter pipe that can be easily inserted into the concrete pipe, and a brim that can be locked by the concrete pipe edge is provided. Cement milk is poured into the concrete pipe before inserting it. Insert the small-diameter tube partway above this and continue the injection. The milk receiving plate is fixed to the inner surface of the concrete pipe at a height position where a milk layer having an appropriate thickness can be formed on the bottom surface of the small diameter pipe.

[0004]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings will be described. Concrete pipe pillar 1
Has a disc 1a fixed inside at a predetermined depth from the apex. The horizontal beam 2 is formed by connecting a plurality of steel pipes so that it can be passed over both pillars beside the railroad track, or a bent pipe 3 to be described later is inserted into a concrete pipe and temporarily fixed and then connected. The bent tube 3 has a hook shape and is fixed to one end of the horizontal beam at one end thereof. The other side is provided with a small-diameter tube 3a that can be easily inserted into the central hole of the pillar 1, and a collar 3b that is locked to the end edge of the pillar when inserted to a predetermined depth. When the height of the pillar 1 is insufficient, another vertical steel pipe (not shown) is connected, and a small diameter pipe 3a and a collar 3b are provided at the tip thereof. The outer peripheral gap of the small diameter portion 3a, the space from the bottom surface of the small diameter pipe to the disc 1a, and the hollow hole of the small diameter pipe are all filled with cement milk 4 and solidified.

The filling of this milk is carried out by the following method. First, milk is appropriately poured onto the disc 1a, and then the horizontal beam is lowered. When the small diameter tube 3a is inserted to a certain depth, the temporary lowering is stopped and the small diameter tube outer circumference is filled. When it is determined that an appropriate amount has been injected, the horizontal beam is lowered again to bring the collar 3b into contact with the upper end of the column. Milk solidifies in a few days.

This work is carried out when the train does not pass, for example, in a limited time zone at midnight. If the time runs out before milk is injected, the horizontal beam 2 is temporarily fixed on both columns 1 by a pair of temporary fixing members 5 shown in FIGS. This metal fitting is provided with fastening pieces 5a and 5b on the upper and lower sides of a semi-circular body capable of holding a cylindrical body, and the upper end of the pillar 1 is at the lower end and the vertical side of the bent tube 3 is at the upper end. Tighten and fix. This fitting is also used after the cement milk has been injected and before the milk has solidified when the crane suspending the horizontal beam is removed.

[0007]

The concrete pipes are used for the both pillars 1, and the connection structure between the concrete pipes and the bent steel pipes 3 fixed to both ends of the horizontal beam 2 or the vertical steel pipes (not shown) connected thereto is Small diameter part 3a provided at the tip of the bent pipe (or vertical steel pipe)
To the top hole of the concrete pipe,
Since it is solidified by the method, even if there is a bending of the steel pipe beam or an installation error, it can be absorbed and installed.

[Brief description of the drawings]

FIG. 1 is a front view of the present invention.

FIG. 2 is a front view near the top of the pillar.

FIG. 3 is a plan view of a tightening fitting.

FIG. 4 is a front view of a tightening fitting.

[Explanation of symbols]

 1 column 2 horizontal beam 3 bent pipe 3a small diameter pipe 3b tsuba 4 cement milk 5 temporary fitting

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masaharu Miura 1-6-5 Marunouchi, Chiyoda-ku, Tokyo Within East Japan Railway Company (72) Inventor Ryuji Sunaga 1-chome, Marunouchi, Chiyoda-ku, Tokyo No. 6-5 East Japan Railway Company (72) Inventor Susumu Ishii 1-6-5 Marunouchi, Chiyoda-ku, Tokyo East Japan Railway Company (72) Inventor Norio Okumura Taito-ku, Tokyo 1-22 Ikenohata, Nippon Electric Construction Co., Ltd. (72) Inventor Sakae Tajima 1-22, Ikenohata, Taito-ku, Tokyo Japan Electric Construction Co., Ltd. (72) Inventor Noboru Nakamura Shinagawa-ku, Tokyo Minami Shinagawa 6-5-19 Sanwa Tech Co., Ltd. (72) Inventor Hideo Omori 6-5-19 Minami Shinagawa Shinagawa-ku, Tokyo Sanwa Tech Co., Ltd. (72) Inventor Hideyuki Kato 6-5-19 Minami-Shinagawa, Shinagawa-ku, Tokyo Sanwa Tech Co., Ltd. (72) Morihisa Nishiyama 5-27-9, Sendagaya, Shibuya-ku, Tokyo Inside Asanopole Co., Ltd.

Claims (1)

[Claims] 1. A pair of concrete pipe pillars, which are erected on both sides of a railroad track and have a milk receiving disk fixed at a predetermined depth from the top, and a horizontal steel beam that straddles both pillars and faces the upper part. , Bent in a hook shape, one side is fixed to the horizontal beam end, and the other side is provided with a small diameter part that can be inserted into the pillar directly or through a vertical steel pipe and a brim that can be locked at a predetermined depth A steel pipe beam device comprising a pipe and cement milk that fills the inner and outer gaps between the bent pipe inserted into the top of the column.