JP2003285161A - Method for manufacturing stepped truss main material using h section steel - Google Patents

Method for manufacturing stepped truss main material using h section steel

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Publication number
JP2003285161A
JP2003285161A JP2002084826A JP2002084826A JP2003285161A JP 2003285161 A JP2003285161 A JP 2003285161A JP 2002084826 A JP2002084826 A JP 2002084826A JP 2002084826 A JP2002084826 A JP 2002084826A JP 2003285161 A JP2003285161 A JP 2003285161A
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JP
Japan
Prior art keywords
plate
main material
formed
section steel
method
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2002084826A
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Japanese (ja)
Inventor
Toshiyuki Kawazoe
俊之 川添
Original Assignee
Tomoe Corp
株式会社巴コーポレーション
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tomoe Corp, 株式会社巴コーポレーション filed Critical Tomoe Corp
Priority to JP2002084826A priority Critical patent/JP2003285161A/en
Publication of JP2003285161A publication Critical patent/JP2003285161A/en
Pending legal-status Critical Current

Links

Abstract

(57) [Abstract] (With correction) [Problem] A simple jointed H-section steel that can reliably position each member by simple setup work, facilitate welding work, and reduce costs and shorten the construction period. Provided is a method of manufacturing a step-like truss main material using the method. SOLUTION: In order to manufacture a main member of a stepped truss by butt-joining a ready-made H-section steel to a substantially vertical member 1V and a substantially horizontal member H in a staggered manner, one butt joint plate 6 is joined to one of the flange plates 1A. A V-shaped notch 3 is formed in the web plate 1C by securing an interval corresponding to the thickness δ of the sandwiching plate 4,
A V-shaped notch 3 is provided by interposing a sandwiching plate 4 in the V-shaped notch 3.
After the other one-flange plate 1B is bent so as to be closed, the one-flange plates 1A, 1B
B and the web plate 1C are welded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is suitable for a green roof structure on which a green unit recommended in an urban area is placed, and a ready-made H-section steel or a web plate between upper and lower single flange plates. The present invention relates to a method for manufacturing a stepped truss main material using an H-shaped steel, which is formed in a staircase by butt-joining substantially vertical members and substantially horizontal members in a staggered manner by the H-shaped steel formed by welding.

[0002]

2. Description of the Related Art Construction of a roof structure, particularly a large-diameter large roof structure has been conventionally performed by a number of construction methods. However, in recent urban areas (Tokyo), suppression of heat island phenomenon, etc. For the purpose of reducing carbon dioxide, measures have been taken to oblige rooftop greening for buildings of a certain scale, and it is expected that such laws and regulations will spread nationwide in the future. As a structure that facilitates the placement and construction of such a greening unit on a large-diameter large roof structure,
The applicant of the present application has previously proposed that a conical frame roof structure composed of a stepped truss as shown in FIG. 8 (Japanese Patent Application No. 6-2566).
22). This structure is constructed by stacking a plurality of structures of different scales, which are made of a bundle material or a tie material, in sequence upward and assembled into a pyramid as a whole. Generally, an H-shaped steel member is used. Produced.

As a truss member of H-shaped steel forming the stepped truss, a part of the stepped truss 101 in FIG.
The substantially vertical member 101V, the substantially horizontal member 101H, and the substantially vertical member 101V in FIG. H like this
To join and join the shaped steels in a stepwise manner, a butt welding method as shown in an enlarged scale in FIG. 9 is used, and both ends of the substantially horizontal member 101H connected by the joint member 102 are respectively substantially vertically upwards and downwards. The member 101V is butt-welded at the B portion. FIG. 10 shows a general butt welding method for H-section steel. In this method, the end faces of the upper single-sided flange plate 101A and the lower single-sided flange plate 101B of the substantially vertical member 101V are butt-welded with the groove on the upper surface of the upper-sided flange plate 101A of the substantially horizontal member 101H, and the substantially vertical member 101V Each flange 101A, 1
The upper half flange plate 101A and the lower half flange plate 101B of the substantially horizontal member 101H on the extension line of 01B.
Reinforcing ribs 101D are provided between them to join them by butt welding and build-up welding.

[0004]

However, in such a general butt welding method, there are 4 to 6 butt portions, and the setup is troublesome, and in addition to the welding work between the flange plates, the reinforcing ribs are used. Butt welding and groove processing prior to welding also required time and labor, resulting in an increase in cost.

Therefore, the present invention solves the problems of the method of manufacturing the stepwise truss main material using the conventional H-shaped steel,
Providing a method for manufacturing a staircase truss main material using H-shaped steel with a simple joint structure that can position each member reliably with simple setup work, facilitate welding work, and reduce cost and construction period The purpose is to do.

[0006]

Therefore, according to the present invention, a substantially vertical member and a substantially horizontal member are made of a ready-made H-section steel or an H-section steel formed by welding a web plate between upper and lower flange plates. In a method of manufacturing a stepped truss main material using an H-shaped steel formed in a staircase by butt-jointing in a zigzag manner, one flange plate and a web plate of the H-shaped steel in the butt joint are replaced with the other plate. Leave the flange plate and secure an interval corresponding to the thickness of the sandwich plate.
A V-shaped notch is formed by cutting out the V-shaped notch, and a sandwich plate is provided in the V-shaped notch to fold the other one flange plate so as to close the V-shaped notch, and then the sandwich plate. It is characterized in that the flange plate and the web plate of the V-shaped notch are welded to each other. Further, the present invention uses a ready-made H-section steel or an H-section steel formed by welding a web plate between upper and lower flange plates to form a staircase shape by butt-joining substantially vertical members and substantially horizontal members in a staggered manner. In the method of manufacturing a step truss main material using H-shaped steel to be formed, the substantially vertical member and the substantially horizontal member in the butt joint are cut at an angle of about ½ of the butt angles, It is characterized in that the sandwiching plate interposed between the cut surfaces and the one flange plate and the web plate of the cut surface are welded and joined. Further, the present invention is characterized in that a groove is formed by ensuring a predetermined angle between the surface of the sandwich plate and the end surface of the one-flange plate which are in contact with each other at the butt joint. Further, the present invention is characterized in that a scallop is formed on the web plate in the vicinity of the end portion of the one flange plate contacting the sandwich plate at the butt joint portion, and these are means for solving the problems. is there.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a method for manufacturing a step truss main material using an H-shaped steel of the present invention will be described in detail below with reference to the drawings. 1 to 4 show the first embodiment, FIGS. 1 (A) and 1 (B) are manufacturing process diagrams of the H-shaped steel truss main material, and FIG. 2 is an enlarged perspective view of part A of FIG. 1 (B). , FIG. 3 is FIG.
FIG. 4 (B) is an enlarged process drawing of part A, and FIG. 4 is a diagram showing a truss main material constructed in a staircase shape. In the present embodiment, as shown in FIGS. 1A and 1B, a substantially vertical member 1V and a substantially horizontal member 1H are butt-joined in a staggered manner by a ready-made H-shaped steel to form a staircase shape. In the method of manufacturing a step truss main material using the H-shaped steel to be formed, one flange plate 1A (upper part) and the web plate 1C of the H-shaped steel at the butt joint (hereinafter referred to as the bent portion 6) are formed. , The other one-side flange plate 1B (the lower part) is left, and a gap δ corresponding to the thickness of the sandwiching plate 4 is secured to form a V-shaped notch 3 by forming a V-shaped notch 3. After sandwiching the sandwiching plate 4 in the notch 3 and bending the other one-side flange plate 1B so as to close the V-shaped notch 3, the sandwiching plate 4 is provided with one-side flange plate 1A, 1B of the V-shaped notch 3. Also, the web plate 1C is welded and joined.

The details will be described below. H-shaped steel truss main material 1
Alternatively, a long object may be used as the butt joint portion 6, and the V-shaped notches 3 may be formed alternately in a zigzag manner, but preferably, as shown in FIG. 1A, the substantially horizontal member 1H is formed. A short H-shaped steel whose central portion is connected by a joint member 2 is adopted. FIG. 3 is an enlarged view of the H-shaped steel truss main material 1 at the butt joint 6 before and after joining. The state before bending of the H-shaped steel truss main material 1 is shown by a two-dot chain line. In the H-shaped steel truss main material 1 ′ before bending, the lower piece flange plate 1B ′ is left as it is, and the left and right predetermined angles (substantially vertical member 1) about the reference plane of the butt joint 6 that becomes the bent portion are centered.
The upper half flange 1A 'is cut off at a substantially right angle at each point of 1/2 of the angle formed by V and the substantially horizontal member 1H, and then,
The web plate 1C 'is cut at a predetermined angle to obtain a V-shaped cut surface 3A'. The lower end of the V-shaped cut surface 3A 'is
As described above, the V-shaped notch 3 is formed with the space δ corresponding to the thickness of the sandwich plate 4 being ensured.

With the sandwiching plate 4 interposed in the V-shaped notch 3 of the H-shaped steel truss main member 1'formed as described above,
As the V-shaped notch 3 is closed as indicated by the arrow, the other one flange plate 1B 'is bent at the bent portion 6 while the V-shaped cut surfaces 3A', 3A 'are brought close to each other. This state is shown by the solid line in FIG. Thus,
Since a predetermined angle is secured between the end surface of the upper one-side flange plate 1A cut off at a substantially right angle and the surface of the sandwiching plate 4 and a groove (space for welding) is inevitably formed, only the other lower portion By simply bending the one-sided flange plate 1B ′ at the bending portion 6, the end surface of the upper one-sided flange plate 1A is properly positioned and set up on the surface of the sandwiching plate 4, and the work of butt welding can be immediately started. FIG. 2 shows a state in which the respective parts are welded and joined together in this manner. Reference numeral 7 is a butt welded portion by the groove, reference numeral 8 is between the sandwich plate 4 and the web plate 1C, and between the sandwich plate 4 and the lower piece. It shows a build-up welding portion between the flange plate 1B. Reference numeral 5 in FIG. 3 denotes a scallop portion formed on the upper end of the V-shaped cut surface 3A ′ of the web plate 1C, which is formed by the groove between the end surface of the upper piece flange plate 1A and the surface of the sandwich plate 4. The continuity of the butt weld 7 is ensured.

FIG. 4 shows a large number of H-shaped steel trusses formed by welding while bending the V-shaped notches 3 alternately in a zigzag pattern in the opposite direction with the joint member 2 as a boundary. 1 shows a stepwise truss main material assembled in a stepwise manner by connecting materials 1, 1 ... With a joint member 2. An appropriate method can be adopted as a method for constructing a roof structure using a step truss main material, but it will not be described in detail here. For example, as shown in Fig. 4, between a large number of step truss main materials that are assembled to the top of the roof and are arranged radially,
Each step is connected in the circumferential direction with a horizontal connecting material or a vertical lattice material to construct a roof structure, or a joint member 2
Several H-shaped steel truss main materials 1 connected in a radial pattern are connected in the circumferential direction with horizontal tie members or vertical lattice materials to form several ring-shaped roof blocks with annual rings. Are sequentially assembled and connected to each other to construct a roof structure.

FIG. 5 shows a second embodiment of the method for manufacturing a step truss main material using the H-shaped steel of the present invention.
In the present embodiment, the main material of the stepped truss is H-shaped steel, which is made of ready-made H-shaped steel and is formed in a staircase by butt-joining the substantially vertical member 1V and the substantially horizontal member 1H in a staggered manner. In the manufacturing method of the above, the substantially vertical member 1V and the substantially horizontal member 1H at the butt joint are made to have a butt angle of about 1;
It is characterized in that it is cut at an angle of / 2 and the sandwiching plate 4 interposed between the cut surfaces 3A and 3A is welded to the single flange plates 1A and 1B of the cut surface and the web plate 1C. In this embodiment, the lower one side flange plate 1B which is another one side flange plate as in the previous embodiment.
It is not necessary to form a V-shaped cutout portion while leaving the above, or to settle in the gap δ for the sandwiching plate 4, so that cutting work does not require skill and the cost is low. Also in this embodiment,
By cutting the end faces of the upper and lower single-flange plates 1A and 1B at a right angle, it becomes possible to form the groove.

FIGS. 6 and 7 show a third embodiment of the method for producing a step truss main material using the H-shaped steel of the present invention. In the present embodiment, in place of the ready-made H-section steel, the upper and lower one side flange plates 1A, 1B are initially separate bodies.
By the H-shaped steel formed by welding the web plate 1C in between, the one-side flange plate 1A and the web plate 1C of the H-shaped steel in the butt joint part 6 and the other one-side flange plate 1B are left, and the sandwiching plate 4 is used. A V-shaped notch 3 is formed by securing a space δ corresponding to the thickness of the V-shaped notch, and a V-shaped notch 3 is provided with a sandwiching plate 4 interposed therebetween. After the other one flange plate 1B is bent so as to close 3, the one flange plates 1A and 1B of the V-shaped notch 3 and the web plate 1C are welded to the sandwich plate 4.

Thus, the substantially vertical member 1V and the substantially horizontal member 1
FIG. 7 shows a staircase truss main material formed in a staircase shape by butt-joining H and H in a staggered manner. In the illustrated example, preferably, the V-shaped cutting surface 3A and the scalloped portion 5 having different cutting directions are pre-formed at both ends of the web plate 1C, but each of the one flange plate and the web plate is H-shaped. It goes without saying that the V-shaped notch 3 may be formed after welding to steel. In addition, in the present embodiment, initially, upper and lower single-sided flange plates 1A,
By using the H-shaped steel formed by welding the web plate 1C between the 1Bs, the substantially vertical member 1V and the substantially horizontal member 1H in the butt joint 6 as shown in FIG. Cut at an angle of / 2, and the cut surfaces 3A, 3
It goes without saying that the sandwiching plate 4 interposed between A, the one-side flange plates 1A and 1B of the cut surface, and the web plate 1C may be welded to each other to form a step truss main material.

Although the respective embodiments of the present invention have been described above, within the scope of the gist of the present invention, a method for forming a ready-made H-section steel, a flange plate and a web plate of a separate H-section steel are described. Welding form, angle formed by substantially vertical member and substantially horizontal member, joint position of joint member in step truss main material (in the example shown, it is arranged at the central portion of the substantially horizontal member, but other than the central portion or substantially vertical portion) The center portion of the plate), the thickness of the sandwich plate, the shape (reinforcing ribs may be formed while avoiding the welding position with the web plate), the length,
Method for forming V-shaped notch and method for bending the other one-sided flange plate, welded joint mode of one-sided flange plate and web plate to sandwich plate, groove angle, cutting method for cut surface at butt joint, web plate Shape of scallops, shape of roof structure using stepped truss main material (not limited to circular in plan view, but also elliptical, rectangular, polygonal, cross-sectional shape and radial width of each stepped truss main material (May be different for each)) can be appropriately adopted.

[0015]

As described above in detail, according to the present invention, a substantially vertical member is formed by the ready-made H-section steel or the H-section steel formed by welding the web plates between the upper and lower single flange plates. In a method of manufacturing a stepped truss main material using an H-shaped steel formed in a staircase by butt-joining substantially horizontal members in a staggered manner, one flange plate and a web plate of the H-shaped steel at the butt joint The other one flange plate is left, and a V-shaped notch is formed by notching in a V-shape while ensuring an interval corresponding to the thickness of the sandwich plate, and the V-shaped notch is provided with the sandwich plate. After bending the other one flange plate so as to close the V-shaped notch by interposing it, by welding and joining the one flange plate of the V-shaped notch and the web plate to the sandwich plate, a part of the one flange plate Each of these members can be surely positioned by a simple setup work that only forms a V-shaped notch and leaves the V-shaped notch with a sandwiching plate serving as a reinforcing member interposed therebetween. It is possible to obtain a simple joint structure that facilitates the welding work, reduces the number of welding spots, and reduces the cost and the construction period.

[0016] Further, the H-shaped steel which is ready-made or formed by welding the web plate between the upper and lower flange plates.
In a method of manufacturing a stepped truss main material using an H-shaped steel, which is formed in a staircase shape by joining a substantially vertical member and a substantially horizontal member in a zigzag shape with a shaped steel, the substantially vertical member at the butt joint portion. And a substantially horizontal member are cut at an angle of about ½ of their abutting angles, and when sandwiching the sandwiching plate interposed between the cutting surfaces and the one flange plate and the web plate of the cutting surface by welding, It is not necessary to form the V-shaped cutout portion leaving the one-sided flange plate, to fix the gap for the sandwiching plate, to cut the workpiece, and to reduce the cost. Further, when a groove is formed by ensuring a predetermined angle between the surface of the sandwich plate and the end surface of the one-sided flange plate that are in contact with each other at the butt joint portion, the flange plate of the flange plate is formed when the V-shaped notch portion is formed. Since the groove is inevitably formed only by appropriately selecting the cutting angle of the end face, no special groove forming work is required, and the work time can be shortened.

Furthermore, when a scallop is formed on the web plate near the end of the one-flange plate that contacts the sandwich plate at the butt joint, it depends on the groove between the end face of the flange plate and the face of the sandwich plate. The continuity of the butt weld is ensured. Thus, according to the present invention, each member can be surely positioned by a simple setup work, the welding work is facilitated, and the cost is reduced and the construction period is shortened. A method of manufacturing a truss main material is provided.

[Brief description of drawings]

1 shows a first embodiment of a method of manufacturing a stepped truss main material using an H-shaped steel of the present invention, FIG. 1 (A) is a H-shaped steel truss main material before welding, FIG. (B) is the H-shaped steel truss main material after welding.

FIG. 2 is an enlarged perspective view of a portion A of FIG. 1 (B).

FIG. 3 is an enlarged process diagram of portion A of FIG. 1 (B).

FIG. 4 is a diagram showing a truss main material constructed in a stepwise manner.

FIG. 5 is a diagram showing a second embodiment of a method of manufacturing a step truss main material using the H-shaped steel of the present invention.

FIG. 6 shows a third embodiment of the method for manufacturing a stepped truss main material using the H-shaped steel of the present invention, and is an H-shaped steel truss main material before welding and its exploded view.

FIG. 7 is a H-section steel truss main material after welding in the same manner.

FIG. 8 is an overall perspective view of a conical skeleton roof structure including a step truss proposed by the applicant of the present application.

FIG. 9 is an enlarged cross-sectional view of the stepped truss of the same.

FIG. 10 is an enlarged perspective view of the butt weld portion of the same.

[Explanation of symbols]

1 ... H steel truss main material 1A ... Upper flange plate 1B ・ ・ ・ ・ Lower flange plate 1C ... Web plate 1H ... ・ Approximately horizontal member 1V ... ・ Approximately vertical member 2 ··· Joint members 3 ... V-shaped notch 3A ... V-shaped cut surface 4 ... Slip plates 5 ... Scallop part 6 ... Bending part (butt joint part) 7 ... Butt weld 8 ... Build-up weld δ ... Gap

Claims (4)

[Claims]
1. A substantially vertical member and a substantially horizontal member are butt-joined in a zigzag manner in a staggered manner using ready-made H-section steel or H-section steel formed by welding web plates between upper and lower flange plates. In the method for manufacturing a stepped truss main material using the H-shaped steel to be formed, the thickness of the sandwich plate except for the one flange plate and the web plate of the H-shaped steel at the butt joint, leaving the other flange plate. The V-shaped notch is formed by notching in a V-shaped notch with a space corresponding to the height being secured, and a V-shaped notch is provided with a sandwiching plate to close the V-shaped notch. A method for manufacturing a stepped truss main material using H-shaped steel, characterized in that after bending the flange plate, a single flange plate of the V-shaped notch and a web plate are welded to the sandwich plate.
2. A substantially vertical member and a substantially horizontal member are butt-jointed in a zigzag shape in a staggered manner by using ready-made H-section steel or H-section steel formed by welding web plates between upper and lower flange plates. In the method for manufacturing a stepped truss main material using H-shaped steel to be formed, the substantially vertical member and the substantially horizontal member in the butt joint are made to have a butt angle of about 1 between them.
Manufacture of a step truss main material using H-section steel, which is characterized in that it is cut at an angle of / 2, and a sandwich plate interposed between the cut surfaces and a flange plate and a web plate on the cut surface are welded and joined. Method.
3. The groove is formed by ensuring a predetermined angle between the surface of the sandwich plate and the end surface of the one-side flange plate that are in contact with each other at the butt joint portion. Method of manufacturing step truss main material using H-shaped steel of.
4. The H-section steel according to claim 1, wherein a scallop is formed on the web plate near the end of the one-flange plate contacting the sandwich plate at the butt joint. Method of manufacturing the main material of the stepped truss used.
JP2002084826A 2002-03-26 2002-03-26 Method for manufacturing stepped truss main material using h section steel Pending JP2003285161A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002084826A JP2003285161A (en) 2002-03-26 2002-03-26 Method for manufacturing stepped truss main material using h section steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002084826A JP2003285161A (en) 2002-03-26 2002-03-26 Method for manufacturing stepped truss main material using h section steel

Publications (1)

Publication Number Publication Date
JP2003285161A true JP2003285161A (en) 2003-10-07

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Family Applications (1)

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JP2002084826A Pending JP2003285161A (en) 2002-03-26 2002-03-26 Method for manufacturing stepped truss main material using h section steel

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104084757A (en) * 2014-06-26 2014-10-08 宁夏共享装备有限公司 Steel truss manufacture process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104084757A (en) * 2014-06-26 2014-10-08 宁夏共享装备有限公司 Steel truss manufacture process

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