JP5319399B2 - Construction method of steel barrel edge in building - Google Patents

Description

  The present invention relates to a method for constructing a steel body edge in a building.

  In steel-frame buildings such as factories, warehouses, stores, etc., when a closed cross-section material such as a square pipe material is used as a steel body edge that is the foundation for mounting exterior materials etc., the steel body edge is On the outer surface, mounting hardware with holes for bolt connection is attached by welding, and then painted to prevent corrosion, then transported to the construction site, where steel frames such as columns and beams are used. It was attached to the mounting side of the frame structure and other steel barrel edges by bolt joints using bolts and nuts using the above mounting hardware, and finish painting was also performed on site.

JP-A-10-219883

  However, in the method as described above, after the mounting hardware is welded to the steel body rim at the factory, it is necessary to apply the coating for anticorrosion as extended above, and it is troublesome. There was a problem that a welding technician was required to attach to the barrel edge.

  In addition, when installing steel barrel edges to buildings, there are many bolt joints for attaching steel barrel edges to steel frame structures such as columns and beams, and other steel barrel edges. There was also a problem that the work burden for bolt joining was large.

  In view of the above problems, the present invention can reduce the steps such as coating for corrosion prevention and welding, and has a simple structure between steel barrel edges made of a closed cross-section material, and Provided is a method for constructing a steel barrel edge in a building that can be joined with high accuracy and, in addition, can reduce the burden of on-site bolt joining work required for mounting the steel barrel edge to the building. This is the issue.

  The above-mentioned problems are that the first and second steel body edges are each formed of a molded processed product of a highly corrosion-resistant molten Zn-Al-Mg alloy pre-plated steel sheet having a closed cross section, and the mounting hardware is also highly corrosion-resistant molten Zn. -The mounting hardware comprising a molded product of an Al-Mg alloy pre-plated steel sheet and attached to the first steel body edge with a one-side bolt from the outside of the steel body edge, the second steel body The steel cylinder edge assembly is manufactured by connecting the first and second steel cylinder edges to each other with one-side bolts from the outside of the steel cylinder edge, and then the steel cylinder It solves by the construction method of the steel trunk edge in a building characterized by assembling an edge structure to a building (1st invention).

  In this method, the first and second steel casing edges and the mounting hardware constituting the steel casing assembly are each made of a molded product of a highly corrosion-resistant molten Zn-Al-Mg alloy pre-plated steel sheet, 1 steel barrel edge and mounting hardware, and the mounting hardware and second steel barrel edge are each joined by one-side bolts, and the first and second steel barrel edges and mounting hardware are Since it is only necessary to drill through holes for bolt joining, plating is possible even when cutting or drilling is performed in the process of manufacturing the first and second steel barrel edges and mounting hardware. The sacrificial corrosion action by the layer works strongly, and there is no such thing that corrosion will occur later due to those parts, so that the first and second steel barrel edges and mounting hardware are painted and after There is no need for plating. For the first and second steel body edges and mounting hardware. Step it is possible to eliminate for anticorrosion to, it can be eliminated welding.

  In addition, since the first steel body edge and the mounting hardware, and the mounting hardware and the second steel body edge are joined with one-side bolts, the first and second steel products made of these closed cross-section materials are used. The trunk edges can be joined to each other with a simple structure by one mounting hardware.

  In addition, after the first and second steel body edges are joined with the mounting hardware and the one-side bolts to produce the steel body edge assembly, the steel body edge assembly is assembled to the building. Since the steel body edge is constructed in the factory, the steel body edge assembly can be manufactured at the factory before assembling to the building. For this reason, one-side bolts are bolts using bolts and nuts. Unlike joining, once tightened, it has the property that it cannot be loosened and retightened, so using one-side bolts for joining members on site will ensure high mounting accuracy. Because it was difficult, it was rarely done, but before assembly to the building, it was necessary to install the first and second steel barrel edges and the mounting hardware between each other at the factory. Relative positional accuracy for And can be set easily, it is possible to perform bonding by one-side bolt after the precise setting of the positional relationship, it is possible to realize an accurate joint about the position relation with one side bolts. Thereby, it is also possible to promote the popularization of the one-side bolt, which has been limited in use for the above reasons.

  Further, after the first and second steel body edges are joined with the mounting hardware and the one-side bolts to produce the steel body edge assembly, the steel body edge assembly is assembled to the building. Since it is intended to construct a steel body edge, the first and second steel body edges are already joined to each other when assembled to the building. It is possible to reduce the number of on-site bolt joints required for installation, and to reduce the on-site work load.

  Since the construction method of the steel body edge in the building of the present invention is as described above, it is possible to reduce processes such as painting for corrosion prevention and welding, and it is made of steel made of a closed cross-section material. The trunk edges can be joined to each other with a simple structure and with high accuracy, and in addition, the burden of the bolt joining work on site necessary for attaching the steel trunk edges to the building can be reduced.

FIG. 1 (a) is a front view of a steel barrel assembly used in the construction method of the embodiment, and FIG. 2 (b) is an enlarged front view of a portion A in FIG. 1 (a). FIG. 1 (a) is a partial cross-sectional perspective view showing the first steel barrel edge and the mounting hardware in a separated state, and FIG. 2 (B) shows the first steel barrel edge and the second steel to which the mounting hardware is mounted. The partial cross-sectional perspective view showing the cylinder manufacturing edge in a separated state, and FIG. Figures (a) and (b) are an overall perspective view and an exploded partial sectional front view of a one-side bolt, and Figures (c) to (e) are partial sectional front views showing how to use the one-side bolt. is there.

  Next, the construction method of the embodiment of the present invention will be described.

  As shown in FIG. 1 (a), the steel body frame assembly 4 used for the construction includes vertical first steel body edges 1 and 1 arranged at intervals on the left and right sides, and the left and right first steel products. The upper and lower horizontal second steel drum edges 2 and 2 are disposed between the first and second steel drum edges 1 and 1 and connect the first steel drum edges 1 and 1 to each other. , 2 are connected using angle-shaped mounting brackets 3 as shown in FIG. 1 (b), and the interior surrounded by these steel barrel edges 1, 1, 2, 2 An opening 6 can be formed.

  In this steel body frame assembly 4, each of the first and second steel body edges 1, 2 is a molded processed product of a highly corrosion-resistant molten Zn-Al-Mg alloy pre-plated steel sheet having a pipe-like closed cross section. Further, each mounting hardware 3 is also made of a molded product of a highly corrosion-resistant molten Zn—Al—Mg alloy pre-plated steel sheet. For example, a highly corrosion-resistant molten Zn-6% Al-3% Mg alloy-plated steel sheet known as ZAM (registered trademark) is used for the highly corrosion-resistant steel sheet.

  As shown in FIG. 2 (a), the plate portion 3a on the vertical side of the mounting hardware 3 is connected to the side surface portion of the first steel body edge 1 from the outside of the steel body edge. As shown in FIG. 2 (b), the plate portion 3b on the horizontal side of the fitting 3 is attached to the upper surface portion or the lower surface portion of the end portion of the second steel barrel edge 2 with respect to the steel. As shown in FIG. 2 (c), the first and second steel cylinder edges 1 and 2 are connected to each other by being attached from the outside of the barrel edge with one-side bolts 5 ... A steel body frame assembly 4 as shown in FIG.

  The one-side bolt 5 includes a bolt body 8 and a sleeve 9 as shown in FIGS. The bolt body 8 includes a head portion 8c at the base end portion of a shaft portion 8b whose outer peripheral portion is a male screw portion 8a, and an inner peripheral shape for rotation operation, for example, an inner peripheral hexagon, at the center position of the top surface portion of the head portion 8c. The sleeve 9 is provided with an outer flange portion 9a at the base end portion, and the outer flange portion 9a has a larger planar size than the head portion 8c of the bolt body 8, and The outer periphery has an irregular shape, for example, a hexagonal shape. The inner peripheral portion of the half portion 9b on the distal end side of the sleeve 9 is provided with a female screw portion 9c that engages with the male screw portion 8a of the bolt body 8, and the inner half portion 9d has an inner diameter. The bolt body 8 is formed larger than the outer diameter of the shaft portion 8b and smaller in thickness than the tip half portion 9b.

The one-side bolt 5 is configured by inserting the distal end portion of the bolt body 8 into the sleeve 9 through the opening on the proximal end side and screwing the male screw portion 8a of the bolt body 8 and the female screw portion 9c of the sleeve 9 together. ,
The one-side bolt 5 is inserted into the bolt through holes 10a and 11a from one side of the overlapped plate portions 10 and 11 as shown in FIGS. The flange portion 9a is brought into contact with the peripheral surface of the bolt through hole 10a of the member 10 on the one side, and the head 8c of the bolt body 8 is screwed while preventing rotation of the outer flange portion 9a with a tool. If the rotation is continued, the proximal end side half portion 9d of the sleeve 9 is plastically deformed and bulges outward in the radial direction, and the bulge portion is formed at the outlet portion of the bolt hole 11a of the plate portion 11 on the other side. 9e is formed, and both plate portions 10 and 11 are sandwiched between the bulge portion 9e and the head 8c of the bolt body 8 or the outer flange portion 9a of the sleeve 9, so that a joined state is formed. Yes.

  The construction is performed in such a manner that the above-described steel body frame assembly 4 is manufactured in a factory or the like, and then the steel body frame assembly 4 is assembled to a building at a construction site. Assemble to the building using the above-mentioned steel body frame assembly 4 with bolts and nuts on the mounting hardware welded to the steel structure such as pillars and beams in the building, or the steel body frame already installed on the building. This is done by bolting.

  In the construction method described above, the first and second steel body edges 1, 1, 2, 2 and the mounting hardware 3 constituting the steel body edge assembly 4 used for the construction are respectively highly corrosion-resistant molten Zn- It consists of a molded product of an Al-Mg alloy pre-plated steel sheet, and the first steel body edge 1 and the mounting hardware 3 and the mounting hardware 3 and the second steel body edge 2 are joined with one-side bolts 5 ..., respectively. The first and second steel barrel edges 1 and 2 and the mounting hardware 3 need only have through holes 7 for joining with the one-side bolts 5. Even if cutting or drilling is performed in the process of manufacturing the steel body edges 1 and 2 and the mounting hardware 3 of 2, the sacrificial corrosion action by the plating layer works strongly, and these parts cause There is no such thing as corrosion later, so the first and second steel barrel edges , 2 and mounting hardware 3 need not be painted or post-plated, and the process for preventing corrosion on the first and second steel barrel edges 1 and 2 and mounting hardware 3 can be eliminated. Welding can be eliminated.

  In addition, since the first steel body edge 1 and the mounting hardware 3 and the mounting metal body 3 and the second steel body edge 2 are joined by the one-side bolt 5, the first and second cross-section members made of these closed cross-section members are used. The second steel barrel edges 1 and 2 can be joined to each other with a simple structure by a single mounting hardware 3.

  In addition, after the first and second steel body edges 1 and 2 are joined with the mounting hardware 3 and the one-side bolt 5, the steel body edge assembly 4 is manufactured. Since the steel body edge in the building is constructed in such a way that it is assembled, the steel body edge assembly 4 can be manufactured at the factory before assembly to the building. It is possible to easily set the relative positional relationship between the first and second steel body edges 1 and 2 and the mounting hardware 3 with ease, and to perform a high-precision joining with the one-side bolt 5. Can be realized.

  Further, after the first and second steel body edges 1 and 2 are joined with the mounting hardware 3 and the one-side bolt 5, the steel body edge assembly 4 is manufactured, and then the steel body edge assembly 4 is added to the building. Since it is intended to construct the steel barrel edge in the building as it is assembled, when assembling to the building, the first and second steel barrel edges 1 and 2 are already joined to each other For this reason, it is possible to reduce the number of on-site bolt joints required for attaching the steel body edge to the building, and to reduce the work burden on the site.

DESCRIPTION OF SYMBOLS 1 ... 1st steel body edge 2 ... 2nd steel body edge 3 ... Mounting bracket 4 ... Steel body edge assembly 5 ... One side bolt 7 ... Bolt through-hole

Claims (1)

Each of the first and second steel body edges is made of a molded processed product of a highly corrosion-resistant molten Zn-Al-Mg alloy pre-plated steel sheet having a closed cross section, and the mounting hardware is also a highly corrosion-resistant molten Zn-Al-Mg alloy. It consists of a molded product of a pre-plated steel plate, and the mounting hardware attached to the first steel body edge with a one-side bolt from the outside of the steel body edge is steel to the second steel body edge. After producing the steel body frame assembly in which the first and second steel body edges are connected to each other by being attached with one-side bolts from the outside of the steel body edge, the exterior material is not yet attached. assembling a steel cylinder adoption thereof in the building and thereafter, characterized by installing an additional outer package to the steel-made cylinder adoption thereof as a base, the construction method of the steel furring strip in the building.

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