JPH0393962A - Moving method for scaffold used for erecting space truss - Google Patents

Abstract

PURPOSE:To enable work to be done on a floor on the ground simultaneously with construction of a space truss and shorten the construction period of the truss and reduce the cost required for temporarily erecting the same by supporting a moving scaffold by means of a constructed truss member, and, as another truss member is assembled, moving the moving scaffold in the direction that assembling of the truss member progresses. CONSTITUTION:A moving scaffold S comprising a supporting member 1,1 arranged parallel to the direction that construction of a space truss T progresses, a hanging scaffold 2 hanged at that end of the supporting member 1 which is pointed to the direction that construction progresses, and a movable scaffold 2' placed on the center portion of the truss in such a manner as being movable relative to the supporting member 1, is temporarily fixed by clamps 3,3 to truss members (t), (t) already constructed at the center and rear portions of the scaffold 2. After assembling of a new truss member 2 provided on the side of the hanging scaffold 2 is completed, the supporting member 1 is temporarily fixed to the new truss member 2 and then the rear clamp 3 is released so that the supporting member 1 is moved forward together with the scaffold 2 while being held by the center clamp 3. Then release and locking of the clamps 3, 3 is repeated to sequentially assemble truss members (t).

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a method for moving a scaffold for constructing a three-dimensional truss, which moves the scaffold for assembling the three-dimensional truss in the erection direction together with the connection of truss members. .

(Problem to be solved by the invention) In addition to the total scaffolding method in which temporary scaffolding is installed from the ground over the entire surface of the truss structure, there have been various methods of assembling scaffolding used in constructing multi-story space trusses, depending on the work location. Mobile scaffolding construction method, block construction method. There are lift-up construction methods, sliding construction methods, etc., but in actual construction, the total scaffolding construction method is often adopted, taking into consideration the shape of the truss, site conditions, construction period, economic efficiency, comprehensive temporary design plan, and safety.

However, since most of the assembly of truss members is done at high places, the total scaffolding method requires a huge amount of temporary scaffolding, and the presence of this scaffolding makes it difficult to perform floor construction work on the ground. I have a problem with.

This invention was made by focusing on this problem with the conventional construction method, and aims to propose a new scaffold construction method that does not interfere with work on the ground.

(Means for Solving the Problems) In the present invention, a mobile scaffold consisting of a support member supported by an existing truss member and a suspended scaffold for work suspended from the tip of the support member is connected to the truss members to form a three-dimensional truss. Each time it is assembled, it is moved while extending in the direction of construction, thereby reducing the amount of scaffolding used, and at the same time eliminating the need for scaffolding to be installed on the ground, solving the problems of the conventional method.

The movable scaffold is temporarily fixed to the existing truss members at two locations, one in the middle of each supporting member arranged in parallel in the extending direction, and the other at the rear in the moving direction, and in this state, the new truss member on the suspended scaffold side is assembled. After that, temporarily fix the support member to this new truss member, release the temporary fixation at the rear in the moving direction while maintaining the temporary fixation between the new truss member and the intermediate part, slide the movable scaffold in the moving direction, and After assembling the truss members up to the hanging scaffold, the temporary fixation at the rear is released again and the movable scaffold is slid, and the movable scaffold is moved according to the assembly of the three-dimensional truss.

(Example> The present invention will be explained below based on the drawings showing one embodiment.

This invention is a method in which a mobile scaffold S for constructing a three-dimensional truss T is moved as the truss members t are connected while being supported by the assembled truss members t.

As shown in Figure 1, the three-dimensional truss T is constructed by connecting the upper chord members, lower chord members, and diagonal members, which are the truss members T, to a ball joint J, and the work proceeds in one direction over the entire width. It is done while

The mobile scaffold S includes support members 1, 1 arranged in parallel in the direction of progress of constructing the three-dimensional truss T, a hanging scaffold 2 suspended from the tip in the direction of movement, and a support member placed in the middle part. An assembled truss member 1. 1 is temporarily fixed and supported at two locations.

As shown in FIG. 1, the movable scaffold S is supported by the three-dimensional truss T by temporarily fixing the support members 1, 1 at the intermediate and rear parts thereof to the lower chord of the truss member T in the direction orthogonal thereto using the clamps 3. The assembly of the truss member t, that is, the connection work to the ball joint J, is performed in this state on the hanging scaffold 2 at the tip and the movable scaffold 2g at the middle, as shown in FIG. Reference numeral 4 in FIG. 2 indicates supports that are installed at appropriate intervals under the three-dimensional truss T to support it.

As shown in FIG. 3, the movable scaffold 2' is mounted on a support member 1.1 as a rail via rollers 5, and is supported by a dowel pin 6 passing through the support member 1.1.
It is possible to stop at any position on 1.

When moving the movable scaffold 2°, when passing over the clamp 3, only the inside of the clamp 3 is moved inward at one end before being allowed to pass.

As shown in FIG. 3, the clamp 3 consists of a plurality of bolts 3a arranged around the lower chord of the truss member t, and gripping fittings 3b, 3b that move up and down along the bolts 3a. , 3b grip the lower chord of the truss member T by sandwiching it from above and below, and at the same time, the supporting member 1 is restrained in the vertical direction by the horizontally arranged restraint fittings 3c, 3c, and a pin passes through the side surfaces of the supporting member 1. 7 to temporarily fix it.

The movable scaffold S is fixed until the assembly of the truss member t shown in solid lines in Fig. 2-1 is completed, and after the connection of the diagonal members on the hanging scaffold 2 at the tip is completed, it is moved in the direction of movement as shown by the chain line. Adjacent ball joint J. It is moved by a distance J, and is stopped at a predetermined position by being locked to the lower chord of the truss member t by a 1 degree stand bar at the rear of the moving scaffold S.

The stopper 11 also functions to prevent the moving scaffold S from falling off when it is stopped.

The moving scaffold S is moved by attaching the supporting member 1 to the newly installed truss member t with the clamp 3, and tightening the gripping metal fittings 3b, 3b and the restraining metal fittings 3c, 3c, as shown in Fig. 2-I and H. It is fixed to the lower chord member of the truss member t, and the vertical movement of the support member 1 is restrained at two places, this and the clamp 3 at the intermediate part, and while it is supported by the truss member t, the pin of the clamp 3 at the rear in the direction of movement is fixed. At the same time as pulling out 7, remove the gripping metal 3.
b. 3b and the restraining metal fittings 3c, 3c are released from the fixed state, and the movable scaffold S is moved in the erection direction.

Note that 8 in Fig. 1 indicates a joint scaffold that connects the movable scaffolds S, S to each other in the parallel direction, and each movable scaffold S is restrained by this joint scaffold 8 to prevent it from falling and to ensure safety. It is elevated.

(Effects of the Invention) The present invention is as described above, and the movable scaffold is moved in the direction of movement as the truss members are assembled by fixing and releasing the clamps at two locations while always supporting the movable scaffold on the constructed truss member. Because it is a structure that allows scaffolding to be installed on the ground over the entire surface of the 3D truss, it is not necessary to install scaffolding on the ground over the entire surface of the 3D truss, reducing temporary construction costs. It is possible to shorten the construction period.

In addition, since the movable scaffold moves along the truss member while being supported by the truss member, the worker can perform the work on a flat scaffold close to the truss member assembly location. , it is possible to construct a three-dimensional truss without being influenced by ground conditions such as the presence of waterways.

In addition, a spacer is attached to the rear of the moving scaffold in the direction of movement to restrain the movement in the direction of movement when stopped, and by connecting the moving scaffolds by connecting the moving scaffolds by straddling the moving scaffolds in the parallel direction. can be prevented from falling off.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the implementation status of the present invention, and FIG.
, IF is an elevational view showing how the movable scaffold moves, and Figure 3 I and N are axial cross-sectional views of the support member and truss member, respectively, showing how the movable scaffold is attached to the truss member. , ■ is a plan view. T: Three-dimensional truss, T: Truss member, J: Ball joint, S: Moving scaffold, 1
...Supporting member, 1'..., stopper,
2... Hanging scaffolding, 2゜... Movable scaffolding,
3...Clamp, 3a...Bolt, 3
b...Grip fitting, 3C...Restriction fitting,
4...Support, 5...Roller, 6.
...Nosokubin, 7...Pin, 8...
...Spliced scaffolding.

Claims (1)

[Claims] (1) In a three-dimensional truss that is constructed by assembling truss members, a movable scaffold consisting of a support member supported by the existing truss members and a suspended scaffold for work suspended from the tip of the support member is attached every time the truss members are connected. This is a method in which the support members are moved while extending in the direction of movement, and each support member arranged in parallel and in the direction of extension is temporarily fixed to the intermediate part and the assembled truss member in the front in the direction of movement. After releasing the temporary fixation and sliding the movable scaffold in the direction of movement, and assembling the truss members up to the hanging scaffold at the tip, the temporary fixation at the rear is released again and the movable scaffold is slid. How to move scaffolding for constructing a three-dimensional truss.