JP2985161B2 - How to adjust the tip height of a cantilever roof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a cantilever roof provided on a stand for a spectator in a stadium, a roof of a parking lot, or a large-scale building with a cantilever. The present invention relates to a method for adjusting the height of the tip of a cantilever serving as a skeleton.

[0002]

2. Description of the Related Art Athletic stadiums and the like include a stair-shaped spectator stand surrounding the stadium, and a large cantilevered roof is protruded from part or all of the stand as a sunshade or a rain shield. Also, cantilevered roofs are sometimes laid on large outdoor buildings such as parking lots. When constructing a cantilever roof to be laid on a large-scale building, in addition to work at a high place, there are cases where the construction site has poor scaffolding, and the work is complicated, and a device is required.

For example, in the case of a cantilever roof of an athletic stadium, it is generally constructed as follows. First, a plurality of columns are installed at appropriate intervals behind a stand provided in a staircase, that is, at the position of the highest staircase, and these are connected by a ridge member. Next, a cantilever projecting slightly upward from the horizontal is projected from each strut toward the stadium. Each strut may be made of steel, concrete, or may be made of rebar or concrete containing rebar. next,
An auxiliary beam is erected between the cantilever beams like a mesh, and a roof shingle is completed. Surround the columns and cantilevers with concrete frames,
In some cases, concrete may be poured into reinforced concrete columns or beams. The cantilever roof drains well,
In order to finish the appearance beautifully, the height of the tip of each cantilever was aligned as follows.

[0004] The cantilever is assembled in advance in a factory or the like, and when the uprights have been set up, the cantilever is carried to the site by truck. At the site, the cantilever is lifted from the truck bed by a large crane, and the worker and the crane operator cooperate to guide the cantilever to the connection position of the column, and lightly tighten it with bolts and nuts to temporarily attach it. Then, the tip of the cantilever was lifted by a crane to adjust the height to a desired height, and then bolts and nuts were tightened and fixed.

However, according to this method, there is a problem that a large crane is required at all times during the work of adjusting the mounting of the cantilever, and it is costly. On the other hand, a method has also been used in which a scaffold is assembled from the ground, a jack is provided on the scaffold, the tip of the cantilever is supported, and the height is adjusted. According to this method, the use time of the crane is reduced and the accuracy of construction is improved, but it takes time and money to build a scaffold from the ground, and since it is an operation in a high place, there is a problem with safety. In addition, there is also a problem that a stand or the like provided immediately below the work site is easily stained.

[0006]

[0008] The present invention has tried to solve the above problems, in the construction of the cantilever roof, folded
It is an object of the present invention to provide a method capable of accurately and easily adjusting the tip height of a cantilever having a portion .

[0007]

According to the present invention, a temporary support (3) is provided at the tip of one or two or more supports erected on a foundation, and each of the supports is provided with a temporary support (3). Base of cantilever (5) consisting of base 5a and tip 5b on both sides or one side
A portion 5a is attached, and the tip height of the tip portion 5b of each cantilever is set in the middle to the tension means (9, 9 ') having length adjusting means (8, 8') in the vicinity of the tip of the cantilever. It is connected to the vicinity of the tip of the temporary support, and the adjusting means (8, 8 ') is used to adjust the two sides of the temporary support so as to be balanced so that the front end 5b is temporarily connected to the base 5.
fixed to a, Oh in method cantilevered roof covering the cantilever Harima
Thus, the cantilever has a bent portion 5c,
(9, 9 ') lifted the tip of the tip 5b of the cantilever
At the time, a wedge (11) is inserted into the bent portion 5c, and the wedge (11)
This method adjusts the height of the tip of the cantilever.

[0010] Alternatively, after adjusting the height of the tip of each cantilever, it has a plurality of pillars standing upright from each other, and cantilever beams protruding on one or both sides of each pillar. In the method for forming a cantilever roof covering between the cantilevers, a temporary support is erected at the tip of each of the supports, and the cantilever is temporarily attached to one or both sides of each of the supports, and near the tip of each cantilever. And the vicinity of the tip of the temporary support are connected by a pulling means having a length adjusting means in the middle, and the pulling means is adjusted by the length adjusting means to adjust the tip of each cantilever to a predetermined height. After the adjustment, the cantilever beams may be fixed to the columns.

In the above arrangement, tension means provided with length adjusting means are arranged on both sides of the temporary support, and when adjusting the height of the tip of the cantilever, the tension applied to the tension means is perpendicular to the temporary support. It is desirable that the component force in the direction of movement is balanced on both sides of the temporary support. In the above configuration, the cantilever has a bent portion, and when the pulling means lifts the cantilever, a wedge is inserted into the bent portion, and the tip height of the cantilever is adjusted by the wedge. adjust.

[0010]

[Function] A temporary support is erected at the end of each support. One or more cantilever beams are attached to one of the columns, and bolts and nuts are lightly tightened to temporarily fix the columns. A tension means such as a wire rope, a reinforcing rod or a steel rod is stretched from the tip of the temporary support to the tip of the cantilever, and a length adjusting means such as a lever block or a turn buckle is interposed between the tension means. If the tensioning means is tensioned by the length adjusting means, the tip of the cantilever rises, and if it is loosened, it falls. With such a configuration, the tip height of the cantilever can be adjusted with high accuracy and easily. Temporary columns, pulling means, etc. are removed after the cantilever is fixed.

[0011] A T-shaped roof having a structure in which a plurality of pillars are spaced apart from each other and a cantilever is provided on each of the pillars, as well as a cantilever on both sides of each pillar. The present invention can also be applied to a cantilevered roof or a cantilevered roof having a number of cantilever beams projecting radially from a center support to form an umbrella.

If the tension means and the length adjustment means are provided only on one side of the temporary support, a large bending load is applied to the temporary support. Therefore, the tension means and the length adjustment means are provided on the opposite side of the cantilever. If the force in the direction perpendicular to the temporary support is balanced, the bending load can be eliminated. The invention
In so are provided bent portions in a cantilever, adjustment upon lifting the cantilever tip, by inserting the wedge by maintaining adjust the height of the tip bent portion, and overall tip of the beam and Can be easily done.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. In FIG. 1 and FIG. 2, although not shown, chairs and other equipment are provided side by side on a base portion 1 as a spectator stand formed in a staircase shape such as a stadium, so that work can be performed. Often in the way.

At the highest position of the foundation 1, a plurality of columns 2 are erected at appropriate intervals. The column 2 in this embodiment is composed of two parallel columns 2a and 2b and a crosspiece 2c connecting the tops thereof. In this embodiment, the pillar uses a steel frame material, but may be a concrete pillar, a reinforcing bar, or a concrete pillar including a reinforcing bar. When the downhill side of the stairs provided on the stadium stand is the front side, the crossbar 2c is on the rear side (that is, the last side of the stairs opposite to the stadium field).
To slightly project. A temporary support 3 is erected on the top of each support 2. The temporary support 3 is made of a steel material such as an H-shaped steel or a type rope, and is desirably formed integrally with the support by welding, bolting, pinning, or the like before manufacturing the support at a factory or the like. However, the column 2 may be attached on the site after standing.

The columns 2 are connected by a horizontal purlin 4.
The figure shows only one purlin for simplicity,
It is also desirable from the viewpoint of strength to connect a plurality of wires vertically and vertically. It is conceivable that the column 2 is made of concrete, but the base of the beam 5a can also be made of concrete or the like.

[0016] at the tip of each post 2, the cantilever 5 which extends toward the front (stairs down side), by bolts and nuts through the steel plate and the like, are provisionally attached. Cantilever 5
Comprises a base 5a and a tip 5b, between which a bent portion 5c is formed. Base 5a and tip 5b are separate
Is assembled and brought to the site.
Into a single cantilever 5 with a bend 5c in the middle
It is composed. Wedge interposed between base 5a and tip 5b
Therefore, a wedge is formed in the bent portion 5c. Cantilever
The base 5a is attached to a column in the field,
The base 5a of the cantilever in this embodiment in advance, Ru integrally attached Tei to the support 2 in a factory or the like. The column is moved from the factory with the base of the beam attached and erected on site. The tip 5b of the cantilever is assembled in a factory or the like, transported to the site in the same manner as in the past, lifted by a large crane, and mounted on the column 2 at the base 5a of the beam.
Integral cantilever having a bent portion attached to the previous end face
Beam 5 is obtained. In the middle of the cantilever 5, a bent portion 5c is formed via a wedge 11. The cantilever 5 is temporarily attached by inserting a wedge with the height of the tip raised slightly higher than a desired height. When the temporary installation is completed, the suspended state of the large crane is released. When this operation is completed, the large crane is released, and can be moved to the erection site of another column, which is very efficient.

At the front and rear of the temporary column 3, at the rear end of the column 2, and at the distal end of the cantilever 5, locking members 7 are provided. Then, when the temporary mounting of the cantilever 5 is completed,
The front end of the temporary support 3 and the rear end of the support 2, and the front end of the temporary support 3 and the front end of the cantilever 5 are respectively connected to length adjusting means 8, 8 ′.
Are connected by pulling means 9, 9 'interposed therebetween. In the embodiment of the present invention, a wire rope is used as the pulling means 9, 9 ', and a lever block is used as the length adjusting means 8, 8'. Of course, a chain or a reinforcing bar, a rope, or the like may be used as the pulling means 9, 9 ', and a chain block, turnbuckle, or the like may be used as the length adjusting means 8, 8'.

By operating the length adjusting means 8 to apply an appropriate tension to the tension means 9 on the front side, it is determined whether or not the cantilever 5 supported by the temporary column 3 can be sufficiently supported by the tension means 9. , Check your ability. The crane may be removed even after the confirmation of the capability of the pulling means. The tension of the pulling means 9 'is adjusted by the length adjusting means 8' on the rear side of the temporary support 3, and the horizontal component of the tension applied to the pulling means 9, 9 '(the component in the direction orthogonal to the temporary support 3) is reduced. If you try to balance,
Since no bending load is applied to the temporary support 3, the temporary support 3 can be made thinner in some cases.

After the cantilever 5 is temporarily attached, the scaffold 10 is hung below the cantilever 5 and the crosspiece 2c using the chain 10a. After that, various works can be performed by using the scaffold 10.
Unlike a scaffold that is set up from the ground, it is relatively easy to install, and since it is cut off from the ground, it can be operated irrespective of the state of the foundation 1 and does not stain the audience stand.

Next, the levers of the length adjusting means 8, 8 'are operated again to finally adjust the height of the tip of the cantilever 5 finally.
In this operation, the tip height of the cantilever in a state where the wedge is temporarily inserted is precisely adjusted by elevating the tip height slightly higher than a desired height, and precisely adjusting the angle. The tension applied to the pulling means 9, 9 'is removed after confirming its ability. Bending part 5
The angle of the cantilever is set by gradually shifting the wedge inserted in c according to the adjustment, and the whole is fully tightened with bolts and nuts. In this embodiment, the adjusting wedge is removed during the final fastening. It is also possible to perform final tightening with the wedge inserted. The same operation is repeated by the number of the cantilever 5 to complete the height adjustment operation. Thereafter, the unnecessary pulling means 9,
9 'and the length adjusting means 8 and 8' are removed, and the welding of the temporary support 3 is cut off, or the bolt and the nut or the pin are removed to separate the temporary support and the temporary support. It is also possible to surround the support 2 and the cantilever 5 with a concrete frame and pour the concrete into a concrete support or a concrete beam. Then, conventionally, it bridged vertically and horizontally auxiliary beams (not shown) between the cantilever 5 mutually completing Put the roof member 1 0 as shown in phantom.

In the above embodiment, the cantilever 5 is provided only on one of the columns 2, but the cantilever 5 may be mounted on both sides of the column. That is, in the embodiment of FIGS. 1 and 2, a cantilever is attached to the back of the cross bar 2c in the direction in which the cross bar 2c extends. In that case, the cross-sectional shape of the roof is T-shaped. Furthermore, it is good also as a structure which has only one support | pillar 2 and mounts many cantilever radially around it. In that case, the cantilever roof has a shape like a umbrella.

[Brief description of the drawings]

FIG. 1 is a side view showing a state in which the tip height of a cantilever roof of the present invention is being adjusted.

FIG. 2 is a perspective view showing a state in which the tip height of the cantilever roof of the present invention is being adjusted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base part 2 Prop 3 Temporary prop 4 Purlin 5 Cantilever 7 Locking tool 8, 8 'Length adjusting means 9, 9' Tension means 11 Wedge

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E04B 1/34 E04B 1/343 E04H 3/14

Claims (1)

(57) [Claims] 1. A temporary support (3) is erected at the tip of one or more supports (2) erected on a base (1), and a base 5a and a tip 5b are provided on both sides or one side of each support. attaching the base 5a of the cantilever (5) comprising a distal end portion 5b of the cantilever
Of the tip height, connecting the middle length adjusting means (8, 8 ') pulling means provided with a (9, 9') near the distal end near the distal end and the temporary post of the cantilever beam, said adjusting means Using (8, 8 '), adjust both sides of the temporary support column so that
In a method of forming a cantilever roof temporarily fixed to the base 5a and covering between the cantilevers, the cantilever has a bent portion 5c , and the pulling means (9,
9 ') raises the tip of the tip 5b of the cantilever, inserts a wedge (11) into the bent portion 5c , and adjusts the tip height of the cantilever with the wedge (11). To adjust the height of the tip of a cantilever roof.