JPS6355569B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for constructing roof trusses and other large span steel frames using the horizontal drawing method.

The horizontal construction method involves assembling steel frames such as trusses one unit at a time on one end wall of a building (a truss on one side and a connecting member in the girder direction), and then sequentially connecting the entire connected structure to the other end wall. until the rod 8 is reached by horizontal pulling jack 7.
The frame is placed over the entire building by moving it through the building (Figures 1 to 3).

When moving it, in order to eliminate lateral vibration, rails or alternatively shaped steel such as H-shaped steel are laid down, and the rails are used as guides to engage wheels or steady rests 4, etc. while moving on the rails. Since it was hot, the amount of jack down performed after removing the rails and wheels was
100 m/m or more, which had the disadvantage of requiring complicated equipment and time to perform multiple jacks at the same time. (Figures 4 and 5) The present invention has been made to eliminate this drawback, and its gist is to make the girder beam that becomes the track a steel frame structure, and to attach a plate to serve as a rail substitute on top of it. This method reduces the amount of jacking down after horizontal pulling by laying the steel frame on top of this and horizontally pulling the steel frame through sliding plates.

Embodiments of the present invention will be described below with reference to the drawings.

First, as shown in FIG. 6, a rail plate 2a is laid on the upper surface of the steel girder 1a. Next, the steel frame 5 is assembled on top of this. At this time, a sliding plate mounting plate 6a is attached to the lower surface of the base plate 5a, and the sliding plate 6 is locked with a non-slip member 6b (FIG. 7). In this state, after horizontal drawing in the direction perpendicular to the drawing, a relatively simple jack (not shown) such as a journal jack is applied between the girder beam 1 and the connecting beam 5b to slightly tighten the frame 5. The slide plate, mounting plate, and rail plate are removed, jacked down, and the base plate is fixed to the girder 1 with bolts 3 to complete the erection (Fig. 8).

In the present invention, a rail plate 2a is used instead of the rail, and no steady rest member is used. This is based on the following findings. In other words, when horizontal pulling is performed on both sides of the girder at the same time, and the stroke of movement is small compared to the width (span) of the frame, errors due to horizontal vibration can be avoided by making the holes for bolts 3 loose. This is because it can be absorbed sufficiently. Therefore, since the steady rest 4 as shown in FIG. 5 is not required, the plate 2a can be used in place of the H-shaped steel 2b for the rail.

With the above configuration, the present invention not only avoids the trouble of having to jack down all at once since the amount of jacking down is small, but also saves materials compared to rails, and the original design of the building is based on steel girders. If there is, it has the advantage of being able to implement the horizontal construction method without changing the design.

[Brief explanation of drawings]

Figures 1 to 3 are explanatory diagrams showing the horizontal drawing method in the construction order, Figures 4 to 8 are detailed views of parts perpendicular to the moving direction, and Figures 4 and 5 are illustrations of conventional examples. 6 to 8 show embodiments of the present invention in the order of construction. 1...Girder beam, 1a...Steel frame girder beam, 2...Rail, 2a...Rail substitute plate, 2b...Rail substitute H-shaped steel, 3...Base plate mounting bolt, 4...Sway rest, 5... Steel frame, 5a...
Base plate, 5b... Connecting material, 6... Sliding plate, 6a... Sliding plate mounting plate, 6b...
Anti-slip, 7... horizontal pulling jack, 8... rod, 9... wheel.

Claims (1)

[Claims] 1. A construction method in which steel frames such as roof trusses are assembled and moved one unit at a time at a fixed location, and then laterally pulled to a predetermined location while being connected.
A plate is laid in advance at a predetermined position on the girder beam, and the frame is pulled horizontally by sliding the plate on the plate via a sliding plate attached to the bottom surface of the base plate of the frame, and then the base plate is tightened with bolts through the hole and fixed. A distinctive feature is the horizontal construction method for steel frames.