JPH0441832A - Liftup method in construction work - Google Patents

Abstract

PURPOSE:To enhance the operating easiness, shorten the construction period, and reduce the costs by installing a roofing frame at a low position to permanent mount props, and simultaneously performing placing of the permanent mount props and raising of the roofing frame using a heaving member with the aid of a driving mechanism. CONSTITUTION:A roofing frame 1 is assembled groundedly in such a condition as placed on less tall provisional mount props 2, and one-side ends of permanent mount props 5 are pivoted rotatably on the roofing frame 1, while the other ends are pivoted rotatably on a cylinder rod 4 as a heaving member moving horizontally with a hydraulic cylinder 3 installed on the structuring ground G. The cylinder 3 is operated to move the cylinder rod 4 for moving the bottoms of the props 5 horizontally, and thus the props 5 are displaced from the aside facing attitude to the plumb upright attitude, and the roofing frame 1 is heaved at the same time as placing of the props 5. Thus the building as object of invention is erected. It may be structured so that grounding casters ate mounted at the bottoms of the permanent mount props 5.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a lift-up construction method for constructing buildings with large roof structures, such as gymnasiums, halls, various pavilions, and the like.

<Conventional technology> Conventionally, this type of lift-up construction method generally consists of installing and fixing the main support columns upright by preliminary construction, erecting the roof frame on the ground, using the main support supports as guides, and using a winch or jack. Buildings were constructed by raising the roof frame using methods such as this, and connecting the top of the main support pillars to the roof frame.

<Problems to be Solved by the Invention> However, the roof frame can only be raised after the main supports are erected and fixed, and the assembly to connect the upper ends of the main supports and the roof frame requires expensive construction. This has the disadvantage that construction work has to be carried out at the same location, which reduces workability and increases both construction period and construction cost.

The present invention has been made in view of these circumstances, and is designed to assemble the main support columns and the roof frame at a low position, and to simultaneously erect the main support columns and raise the roof frame. The purpose is to provide a lift-up construction method that can shorten the construction period and reduce construction costs.

Means for Solving the Problem> In order to achieve the above-mentioned object, the lift-up construction method of the present invention, as the invention according to claim (1), is designed to improve One end of the main column is pivotally connected to the frame so that it can rotate around a horizontal axis, and the other end of the main column is connected to a push-up member provided on the construction ground so that it can be driven and moved in the horizontal direction by a drive mechanism. The lower end of the main support is driven and moved to a position where the main support is in an almost vertical standing position, and the roof frame is raised. Further, as the invention of claim (2), the roof frame of claim (1) is constructed by using a temporary member with a low height. Assemble the ground by placing it on the
The push-up member is connected to the roof frame in an attitude inclined with respect to the horizontal direction.

In addition, as the invention of claim No. (3), the invention of claim No.
In the lift-up method of item 1) or item (2),
A grounding wheel is attached to the lower end of the main pillar, and a push-up member is pivotally connected to the other end of the main pillar so as to be rotatable around the rotational axis of the grounding wheel.

<Function> According to the configuration of the lift-up construction method of the invention according to claim (1), the roof frame is assembled into the ground at a low position, and the roof frame and the push-up member provided on the construction ground are connected to the main support. By connecting through the roof and moving the push-up member, the main support can be moved from a horizontal position to a vertical standing position, and the roof frame can be lifted at the same time as the main support is erected to construct a building.

Furthermore, according to the structure of the lift-up construction method of the invention according to claim (2), even though the roof frame is assembled into the ground at a low position, the connection position with the main support is raised and the main support is installed at the initial stage. is installed in an inclined position, and the horizontal force associated with the movement of the push-up member can be effectively converted into the vertical force that lifts the roof frame.

Furthermore, according to the configuration of the lift-up construction method of the invention according to claim (3), regardless of the change in the posture of the main support, the main support can be installed without changing the height of the connection point with the push-up member. The lower end of the support column can be smoothly moved in the horizontal direction by the grounding wheels.

<Example> Next, an example of the present invention will be described in detail based on the drawings.

1 Retired Emperor's Division A first embodiment of the lift-up method will be described in order.

■ As shown in FIG. 1(a), low-height temporary supports 2 as temporary members are erected at predetermined locations corresponding to the outer periphery of the roof frame 1, and these temporary supports 2... The roof frame 1 is assembled on the ground while being placed on the roof.

The temporary member is not limited to the above-mentioned temporary support 2,
For example, it may be a temporary storage stand.

■ As shown in FIG. 1(b), a cylinder rod 4 as a push-up member is provided on the construction ground G so that it can be driven and moved in the horizontal direction by a hydraulic cylinder 3 as a drive mechanism,
Horizontal axis x1 with one end side of the main support column 5 attached to the roof frame l
The other end of the main column 5 is connected to the front end of the cylinder rod 4 in a horizontal axis X.
Rotatably connected around 2. At this time, WIFk
A safety wire 6 of a length that is tensioned when the roof frame 1 is raised to the top is connected over the outer peripheral edge of the frame side 1 and the top of the construction site gIG.

(c) As shown in FIG. 1(c), the lower end side of the main support column 5 is driven and moved in the horizontal direction by repeating the expansion/contraction operation and rearrangement of the hydraulic cylinder 3, and the roof frame 1 is lifted. During this lifting process, even if the roof frame 1 tends to tilt to one side in the left-right direction, the tensioning action of the safety wire 6 can prevent the roof frame 1 from tilting more than a predetermined amount.

As shown in FIG. 2, a grounding wheel 7 is attached to the lower end side of each of the main pillars 5, and the cylinder is rotated so that the rotational axis of the grounding wheel 7 and the axis X2 coincide with each other. The distal ends of the rods 4 are pivotally connected to the lower ends of the main columns 5.

A fixing plate 8 is integrally connected to the cylinder rod 4 at a midway point in the longitudinal direction.

With such a configuration, first, as shown in FIG. In this state, extend the hydraulic cylinder 3, and when it reaches the stroke end on the extension side, (b) in Fig. 2
), the second reaction force plate 10 is fixed to the construction ground G so as to come into contact with the fixing plate 8,
In this state, the hydraulic cylinder 3 is shortened, and when the stroke end on the shortening side is reached, the first reaction plate 9 is moved so as to come into contact with the bottom side of the cylinder body 3a of the hydraulic cylinder 3 in the same manner as in the above case. is fixed to the construction ground G, and these operations are repeated to replace the hydraulic cylinder 3.

■ Then, by repeating the above-mentioned rearrangement, as shown in FIG. Next, concrete 5a is poured and the main pillars 5 are erected and fixed on the construction ground G to construct a building having a large roof frame 1, as shown in the perspective view of FIG.

The wires 6... may be removed after the building is constructed.

The hydraulic cylinder 3... each hydraulic pipe 3a is
As shown in the block diagram of FIG. 4, it is connected to a hydraulic fill such as a hydraulic pump or a hydraulic tank via a quantitative distributor 12, so that each hydraulic cylinder 3... can extend and contract with the same stroke. It is configured.

Figure 5 is a side view showing the second embodiment, in which the roof frame 1
This shows the case where the main support 5 is erected with the eaves left in place, and in this case, as shown in FIG. 5(a),
When the roof frame 1 is assembled on the ground, the permanent support columns 5 can be initially installed in an inclined position, and the temporary support columns 2 as in the first embodiment described above are unnecessary.

Then, as in the first embodiment, the hydraulic cylinder 3 is installed on the construction ground G, and a main support 5 is installed between the cylinder rod 4 of the hydraulic cylinder 3 and the roof frame 1.
By connecting the wire 6 across the roof frame 1 and the construction ground G, and repeating the expansion/contraction operation and rearrangement of the hydraulic cylinder 3, the eaves can be fixed as shown in FIG. 5(b). A building with a certain large roof frame 1 is constructed. The other configurations are the same as those in the first embodiment, are given the same drawing numbers, and the explanation thereof will be omitted.

In the above embodiment, a negative-stage hydraulic cylinder 3 is used, but a multi-stage hydraulic cylinder having two or more stages may also be used.

Further, as a configuration for driving and moving the lower end side of the main support column 5 in the horizontal direction, for example, an electric motor or a hydraulic motor is used as the drive mechanism to drive and rotate the screw member,
On the other hand, a rod having a threaded portion that engages with the threaded member may be provided as a push-up member so as to be movable in the horizontal direction, and the main support 5 may be pivotally connected to the tip of the rod.

<Effects of the Invention> According to the lift-up method of the invention according to claim (1), it is possible to not only assemble the roof frame, but also to connect the roof frame and the main supports, and to connect the main supports to the main support. Both erection and lifting of the roof frame can be done from a low position, improving work efficiency.Moreover, by driving the push-up member in the horizontal direction, erection of the main supports and lifting of the roof frame can be done easily. can be done at the same time, shortening the construction period and reducing construction costs.

Further, according to the lift-up method of the invention according to claim (2), although only a temporary member is provided, the force in the horizontal direction accompanying the movement of the push-up member is replaced by the force in the vertical direction that lifts the roof frame. Because it can be converted well into It is.

Further, according to the lift-up method of the invention according to claim (3), no bending stress is applied to the push-up member regardless of changes in the posture of the main support, and the push-up member is made of a relatively low-strength member. It is easy to configure and is inexpensive, and it also allows smooth horizontal movement of the lower end of the main support, which reduces frictional resistance compared to, for example, moving the lower end of the main support while sliding it on the construction ground. There is no power loss due to this, and a highly capable drive mechanism is not required, making it inexpensive.

[Brief explanation of drawings]

The drawings show an embodiment of the lift amplifier construction method according to the present invention, FIG. 1 is a schematic side view explaining the procedure of the first embodiment of the lift up construction method, and FIG. 3 is an enlarged side view showing the connection configuration, and FIG. 3 is an overall perspective view.
FIG. 4 is a block diagram showing the distribution and supply structure to the hydraulic cylinders, and FIG. 5 is a schematic side view illustrating the procedure of the second embodiment of the lift-up method. 1...W root frame 2...Temporary support as a temporary member 3...Hydraulic cylinder as a drive mechanism 4...Cylinder rod 5 as a push-up member...Permanent support G...Construction ground Xl... Rotation axis X2 of the main support with respect to the roof frame
・・Rotation axis of the main support column relative to the cylinder rod

Claims (3)

[Claims] (1) After the roof frame is assembled into the ground, one end of the main support is pivotally connected to the roof frame so as to be rotatable around a horizontal axis, and is driven horizontally by a drive mechanism on the construction ground. The other end of the main support is pivotally connected to a push-up member that is provided so as to be rotatable about a horizontal axis, and the lower end of the main support is in a standing position in which the main support is substantially vertical. The lift-up construction method is characterized in that the roof frame is raised by driving to a position where the main pillar is erected and fixed on the construction ground. (2) The roof frame according to claim (1) is assembled on the ground while being placed on a temporary member of low height, and the push-up member is connected to the roof frame in an attitude inclined with respect to the horizontal direction. Lift-up method. (3) In the lift-up construction method according to claim (1) or (2), a grounding wheel is attached to the lower end side of the main pillar, and the grounding wheel is rotatable around the rotation axis of the main support. A lift-up method in which a push-up member is pivotally connected to the other end of the installation support.