JPH0489938A - Liftup device installing method for truss lifting construction method and truss joining method - Google Patents

Abstract

PURPOSE:To reduce the construction term and the cost by mounting a tensioner member on a bracket fixed on a suspended structural member, installing a hangup means on a bracket fixed to supporting structure, and pulling up the tensioner member by this hangup means. CONSTITUTION:A chord tensioning beam 3 is assembled on a provisional mount table installed on the ground between supporting structures. Tensioner members 5 are fixed to the ends of this chord tensioning beam 3, and the upper part of each tensioner member 5 is mounted on a hangup jack 6 installed over the inner end of a receipt truss 2 on each structure 1 and lifted. A provisional plate is fixed to each joining end of the receipt truss 2 and chord tensioning beam 3, and provisional plates are joined with each other by bolt provisionally. After the jack 6 is removed, the receipt truss 2 and chord tensioning beam 3 are joined permanently.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a lift that lifts a structural member such as a stringed beam or a truss beam and integrally connects it to a supporting structure such as a building column or load-bearing wall. The present invention relates to a method for attaching a lifting device and a method for joining frame members in the up construction method.

[Prior art 1] Conventionally, in this type of gluing method, a temporary support or the like was installed at the point where the frame member was to be lifted, and a lifting device was attached to this to lift up the frame member.

However, the above-mentioned 7 tor 7 pue method requires a great deal of cost and time to install the GI support, and has problems such as making the construction complicated and large-scale.

[Problem to be solved by the invention 1 The present invention has been made to solve the above-mentioned conventional problems, and its purpose is to reduce the construction period and cost by minimizing the amount of temporary construction materials used. The present invention provides a method for attaching a lifting device and a method for joining frame members in a lift-up construction method for frame members, which can reduce the amount of damage.

[Means for Solving the Problems 1] The method for attaching a lifting device in the frame material glue 7-to-pue method of the present invention is to lift a frame material such as a beam and integrally attach it to a supporting structure such as a building column or load-bearing wall. In the joining method, a bracket is attached to the joint end of the above-mentioned frame member so as to project laterally, and a tension member such as a hanging wire or rod is attached to the bracket, while the above-mentioned support structure is joined. The present invention is characterized in that a bracket is also attached to the end so as to project laterally, a lifting means such as a lifting jack is installed on the bracket, and the tension member is pulled up by the lifting means.

In addition, the method for joining frame members using the 7-to-pue method for bonding frame members of the present invention is the above-mentioned lift-up method in which a frame member such as a beam is lifted up and integrally joined to a supporting structure such as a building column or load-bearing wall. A temporary plate is attached to the joint end of the frame member and the support structure, and the temporary joint is continued until the installation of the permanent plate is completed. The bolt holes in the above temporary plate should be loose holes, and the bolt holes at the joint end of the above frame material and supporting structure should be pre-drilled in the correct positions, and the bolt holes in the permanent plate should be made into the bolt holes in the above normal positions. Butt them together and open them.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a support structure, which is a support framework such as columns and load-bearing walls that supports the load of an erected structure such as a roof. A support lath 2 is installed on the support structure 1. The bridge truss 2 mainly consists of two inclined members 2a.
and a top beam member 2b that receives the roof. 2
The lower end of the book slant member 2a is rotatably pivoted to the upper end of the support structure 1 by means of a bottle joint, and both ends of the top beam member 21) are also attached to the top of each slant member 2a. It is rotatably connected by a pin joint, and has a triangular truss structure as a whole.

As shown in FIG.
The web portion of the H-shaped steel is notched in steps, and a temporary play) 2c is integrally attached to the middle arrow cut portion, and the temporary play) 2e is cut out.
At the same time, drill bolt holes 2c' for joining, and make bolt holes 2b' for joining at the upper and lower 7 run sections.

Incidentally, since the truss 2 in this embodiment functions as a member for joining the stringed beam 3 as a frame member, it is included in the same concept as the support structure 1 in the present invention.

Again, in FIG. 1, reference numeral 3 is a stringed beam, and on the open ground El of the support structure 1: a temporary stand 4t installed, the arch-shaped girder 3a, the stretched stringed material 3b, and the auxiliary material 3c are assembled into the ground. It is composed of At this time, the roof underlayment will also be installed. After the girder material 3a is lifted up as described later,
The bridge is fixedly connected to the inner end of the top beam member 2b of the truss 2, thereby forming an arch-shaped roof as a whole.

(See FIG. 8) The string members 3b are connected to both ends of the girder member 3a, and are stretched in an arcuate shape. Furthermore, the auxiliary material 3c is interposed between the girder material 3a and the stringed material 3b to reinforce the stringed beam 3.

The joint end of the above-mentioned stringed beam 3, that is, the end of the girder material 3a, is also made by cutting out the web part of the H-shaped steel in a step shape, and integrally attaching a temporary plate (3d) to the center arrow part, as shown in Fig. 2. When the bolt hole 3d' for connection is made in 3d (for installation and temporary play), the bolt hole 3a' for connection is made in the upper and lower 7 run sections.
Leave it open.

Incidentally, the assembly of the stringed beam 3 may be performed in parallel with the construction of the support structure 1 and the truss 2.

When the assembly of the stringed beam 3 is completed, as shown in Fig. 3,
A bow tension member 5 such as a hanging wire or rod is attached to both ends of the tension member 5, and the upper part of the tension member 5 is attached to a lifting shear 7 attached to the upper inner end of the truss 2 to lift it up. Incidentally, the temporary stand 4 is removed as appropriate.

4 and 5 show enlarged details of the tensile member 5 and the lifting jack 6, in which a racket 7 is stretched laterally at the bottom of the end 7 run of the girder 3a of the strung beam 3. Attach the tension member 5 to this bracket 7.
It is designed to attach the lower end of the. Therefore, the tension member 5 is attached to the main beam member 3a of the stringed beam 3 and the bridge member so as to avoid the top beam member 2b of the truss 2, and to project laterally over the tip 7 run portion of the top beam member 2b. It is attached to the lifting jack 6 on the bracket 8.

During the lift-up work, as shown in Fig. wJ3, the backstay 10 is stretched between the outer end of the truss 2 and the base 9, and the support controls the displacement of the truss 2 during lifting. It's designed to balance things out.

After placing the stringed beam 3 at the specified joint position and pulling it up 7 times, the 6th
As shown in the figure, the above provisional play) 2c and 3a make a provisional #C meeting with each other using bolts. In this case, as shown in FIG. 2, the bolt holes 2c' and 3d' are enlarged to reduce the number of bolt holes, and are used as loose holes to enable quick and strong joining.

After the temporary bonding is completed, the lifting jack 6 is removed and the final bonding is performed.

As shown in Fig. 7, the main joining is to connect the 7 run portions of the top beam material 2b and main beam material 3a made of H-shaped steel to the main plate 1.
1, sandwich it from above and below and tighten and fix it with bolts to construct a large frame building made of stringed beams, as shown in FIG.

At this time, as shown in FIG. 2, bolt holes 2b'3a' are pre-drilled at the proper positions in the 7-run portions of the top beam material 2b and main beam material 3a, and the bolt holes in the main plate 11 are It will be possible to open it at the site.

Note that the tensile material support member may be attached below the temporary plate 3d.

[Effects of the Invention] ])'/7) 7 By reducing the amount of temporary construction materials used in the Nobue method, it is possible to reduce construction costs and construction period.

2) By using the main components, it is possible to simplify the top-up equipment and to simplify the installation work, thereby saving overall labor.

3) Safety is improved because the amount of labor required is reduced.

4) By using the temporary bonding member, the following effects can be expected.

a. When bolting steel members together, it is possible to do so without applying excessive force.

There is no need for extra labor or excessive external force for position correction for 60 bolts tightening work.

The reliability of the joint is increased because there is no distortion or undue stress at the C9 joint.

[Brief explanation of drawings]

Figure 1 is a construction drawing showing the state of the frame members being assembled into the ground, Figure 2 is an enlarged perspective view of the joints, Figure 3 is a diagram of the frame members in their fully up state, and Figure 4 is the lifting percentage. A front view showing the installation state, Fig. 5 is a side view, and Fig. 6 is a V with a temporary plate.
FIG. 7 is an enlarged perspective view of the i-joined state, FIG. 7 is a side view showing the fully joined state, and FIG. 8 is a construction drawing showing the completed state of joining of the frame members. DESCRIPTION OF SYMBOLS 1... Support structure, 2... Support truss, 2a...
Inclined material, 2a'...bracket, 2b...top beam material, 2b' bolt hole, 2c...temporary plate, 2e'...
・Bolt hole, 3... String beam, 3a... Girder material, 3a
'... Bolt hole, 3b... String material, 3c... Auxiliary material, 3d... Temporary plate, 3d'... Bolt hole, 4
...Temporary stand, 5--Tension material, 6--Hoisting jack, 7, 8--Bracket, 9--Base, 10--
・Backstay, 11...Permanent plate.

Claims (1)

[Claims] 1. In a lift-up method in which a frame member such as a beam is lifted up and integrally joined to a supporting structure such as a building column or a load-bearing wall, a bracket is placed laterally at the joint end of the frame member. At the same time, a tension member such as a hanging wire or rod is attached to the bracket, and on the other hand, a bracket is also attached to the joint end of the support structure so as to extend sideways, and a tension member such as a hanging wire or rod is attached to the bracket. Install lifting means such as a lifting jack,
A method for installing a lifting device, characterized in that the tension member is pulled up by the lifting means. 2. In the lift-up method, in which a frame member such as a beam is lifted up and integrally joined to a supporting structure such as a building column or load-bearing wall, a temporary plate is attached to the joint end of the frame member and support structure, A method for joining frame members characterized by temporary joining until the installation of the permanent plates is completed. 3. The method for joining frame members according to claim 2, wherein the bolt holes of the temporary plate are made loose holes. 4. Bolt holes at the joining end of the frame member and the support structure are pre-drilled at regular positions, and the bolt holes in the main plate are drilled on-site to match the bolt holes at the regular positions. Or the method for joining frame members according to 3.