JP3119688U - Frame type seismic reinforcement device - Google Patents

Abstract

An object of the present invention is to provide an inexpensive and easy-to-handle frame-type seismic reinforcement device that can be retrofitted into an opening of an existing wooden building and can be installed from the outside of the building to enhance seismic resistance.
SOLUTION: Four parts A obtained by joining channel steels (channels) in an L-shape and joint parts B for connecting and fixing parts A to each other with channel steels having a size capable of fitting into the groove portions of the parts A are provided. A frame type characterized in that the frame of the frame is configured as a set of four, and the frame is connected and fixed to a pillar, beam, foundation, etc. with a screw bolt or the like along a wall opening of an existing building. The present invention relates to a seismic reinforcement device.
[Selection] Figure 4

Description

  The present invention relates to a frame-type seismic reinforcement device that can be retrofitted to an opening of an existing wooden building and can be retrofitted and provided with a simple structure at low cost.

Conventional wooden houses, especially wooden houses built according to the old earthquake resistance standards before 1981, have poor earthquake resistance, and many houses have collapsed due to the Great Hanshin-Awaji Earthquake, the Northern Miyagi Earthquake, the Chuetsu Earthquake in Niigata Prefecture, Because of the damage, the fear of earthquake damage was reaffirmed, and various measures to prevent the collapse of houses are currently being taken.
Many wooden houses based on the current seismic standards seemed to suffer less damage compared to houses built under the old seismic standards even in the above earthquake disaster areas, but there are diplomatic buildings that require repairs that do not meet the current seismic standards. According to the ministry's announcement, more than 11.5 million houses.
The damage to existing buildings due to a huge earthquake that is predicted to occur in the near future is particularly serious, with older buildings having larger openings and fewer bearing walls that match heavy tile roofs. Prevention measures are urgently needed.

In the event of a large earthquake, a wooden house adds intricately intertwined horizontal and vertical forces to the foundation, so if there is no bracing, even if the foundation and vertical wooden pillars are pulled out of the foundation, they will not fall apart As a countermeasure, Japanese Patent Application No. 2000-129930 has developed a seismic reinforcement method focusing on concrete foundations, foundations, and vertical wooden pillars in post-construction wooden houses and a seismic bracket used in the construction method.
In addition, utility model registration No. 3085223, utility model registration No. 3105053, Japanese Patent Application Laid-Open No. 2004-324225, etc. are all related to seismic reinforcement devices, and for the same purpose as described above, from a concrete foundation, The present invention relates to the development of an anti-seismic reinforcement device for the purpose of preventing vertical wooden pillars from being pulled out and causing the house to collapse.

  However, all of the above inventions are intended to prevent the foundation and vertical wooden poles from being pulled out from the foundation. It is not enough as a seismic measure.

In addition, as a seismic reinforcement device for the opening of a wooden house, a method of installing a structural member of a load-bearing wall as a part of a shaft assembly has been conventionally used. There are many things that are difficult to adjust, and Japanese Patent Application Laid-Open No. 2005-126893 is available as a countermeasure. However, since this invention is also incorporated into the shaft assembly, there is a drawback that it can be retrofitted to an existing house and cannot be externally attached.
In general, the owner of a wooden house building is often an individual, the construction cost is low, and it is desired that the construction can be performed while using the building. However, if you add a seismic wall to a wooden building or provide a brace on an existing wall, or if you want to fix the structure material of a building base, column, beam, etc. It is necessary to remove or restore finishing materials inside and outside of the house, limiting the use of living space. These are also major causes that hinder the spread of seismic reinforcement work.

  The present invention has been made to eliminate the above-mentioned drawbacks of the existing technology, and is intended for seismic reinforcement of openings, which is one of the weak points of many existing houses that do not meet the current seismic standards in Japan. In addition, it was made to provide a frame seismic reinforcement device that can be attached to pillars, beams, foundations, foundations, etc. from outside the building, rather than from the inside of the building. (Of course, it can be used for new construction)

  The feature of this device is that it can be manufactured inexpensively with a small number of parts, is small and convenient for transportation, can be easily assembled at the work site, and can be easily fine-tuned during assembly even in existing buildings where the dimensions are not constant. It is a structure.

  The present invention provides a joint part B for connecting and fixing parts A with four parts A each having a groove-shaped steel (channel) joined in an L-shape and a groove-shaped steel of a size that can be fitted into the groove portion of the part A. A frame-type seismic reinforcement that consists of four frames to form a frame of the frame, and the frame is connected and fixed to pillars, beams, foundations, etc. with screw bolts along the wall openings of the existing building. In this device, this part A is made by joining grooved steel in an L-shape, and in order to strengthen the joint, it is firmly welded to the tip of the grooved steel on the connected side and the inner tip of the opening of the connecting part The reinforcing plates 4 and 4 'are welded to each other to increase the strength during compression or expansion.

  In addition, since the externally attached frame body is still exposed, it is necessary to make up the outside. For this purpose, the part A is large enough to cover the frame body and has a substantially U-shaped cross section and an L-shaped part A. The cover part C in a shape covering the cover is made of plastic or a thin metal plate, and is fitted or screwed to the frame provided along the opening to cover the surface of the frame, and the state of the plastic remains or the wall It can be painted to match.

  Also, if you want to fix the frame body not only to the base but also to the foundation part and fix it more firmly, fix one side of the angle-shaped foundation fixing bracket with the anchor bolt, and the other side and the bottom of part A Seismic function can be strengthened by fixing with anchor bolts.

The part A of this device is made of grooved steel as the main material, welded and fixed to the L shape, which is approximately half the length and width of the frame body, and has a strong structure that can withstand both compression and expansion by placing a reinforcing plate inside. Despite this, it is lightweight and easy to transport and handle.
In addition, the connection is made of the same channel steel as part A, and the joint parts that can be fitted into the groove part of part A are connected and fixed on site, so fine adjustment is possible even for openings with different dimensions. The strength is extremely large, and the reinforcing effect is extremely large in structure.
Furthermore, if the cover parts are made slightly longer than part A, fine adjustments can be made at the site, and several basic colors are prepared, from which the color of the wall of the construction house It is convenient if you can choose the one that matches, and if it doesn't match, you can paint it in the desired color.

  In general, when installing a seismic wall in an existing wooden building or installing a brace for seismic resistance, the interior becomes dirty due to material import and removal of waste materials, etc., but the living space is limited. Because it is externally attached, it is very different from conventional earthquake-resistant construction in that construction is easy and the burden on consumers is small.

  The device of this application is installed along the periphery of the wall opening (window and doorway) of the existing building, so unlike the installation of a new seismic wall, its function is not obstructed without blocking the window opening of the existing building. have.

  As described above, the present frame-type seismic reinforcement device is composed of four parts A obtained by joining groove steels (channels) in an L-shape, and the groove steels of a size that can fit into the groove portions of the parts A. A set of four joint parts B to be connected and fixed constitutes a skeleton of the frame body, and the frame body is connected and fixed to a pillar, beam, foundation, etc. with a bolt or the like along a wall opening of an existing building. The cover part C is of a size that covers the cross section and is substantially U-shaped in cross section and L-shaped in the plan view is made of plastic or a thin metal plate, and is fitted to a frame provided along the wall opening of an existing building or It is characterized in that it is screwed to cover the surface of the frame and make up.

Part A shown in FIG. 1 is obtained by joining groove steel to an L shape so that one side a and b are 1 m so that it is about half the height (2 m) of a standard size frame. A frame body D is constructed by connecting and fixing with screw bolts 1 or the like using joint parts B described below, which are arranged at the four corners of the window frame.
In this part A, a grooved steel b short by the width of the grooved steel (about 125 mm) is placed on the upper end of the grooved steel a having a length of 1 m, and the grooves 2, 2 ′ are placed in the same direction, respectively. Are welded and firmly welded, and the reinforcing plates 4 and 4 ′ are welded to the portion of the grooved steel a near the inner tip of the groove 2 and directly below the walls 3 and 3 ′ of the grooved steel b. A structure that enhances the strength during compression or expansion.

  A joint part B shown in FIG. 2 is a grooved steel of a size that can be fitted into the groove 2 part of the part A, and connects and fixes the parts A to each other.

  Both the bottom surface 5 of the part A and the bottom surface 5 of the joint part B are appropriately provided with screw holes 6 for connecting and fixing bolts. Since the size of the frame D is slightly different depending on the size of the opening F at the site, if the shape of the hole is adjustable, the work at the site is facilitated.

  4 parts A and 4 joint parts B constructed as described above are transported to the work site as a set (for one frame D), and the frame D is an existing building shown in FIG. It is connected and fixed to the pillar 11, the beam (not shown), the base 12 and the like along the wall opening F of E with a screw bolt 1 or the like.

  As shown in FIG. 4B, the completed frame D itself is not decorated, so it is necessary to cover the surface and apply makeup. For this purpose, as shown in FIG. 3, an L-shaped cover part C having a substantially U-shaped cross section and a slightly larger planar shape than the part A is made of plastic or a thin metal plate, and as shown in FIG. A frame D provided along the wall opening F of the existing building E is fitted or screwed to cover the surface of the frame D and make up.

  Depending on the shape of the wall opening F, as shown in FIG. 5, an angle-shaped foundation fixing bracket 9 is fixed to the foundation 8 with anchor bolts 10, and the lower end 7 of the frame body D is connected and fixed with bolts 13. In the drawing, 14 indicates a finishing material.

As mentioned above, many of the wooden houses based on the current earthquake resistance standards were destroyed by the Great Hanshin-Awaji Earthquake, the Northern Miyagi Earthquake, and the Chuetsu Earthquake in Niigata Prefecture, and many of the houses that were destroyed were previously built houses. According to the survey results, it is necessary to rebuild to a house that meets the current earthquake resistance standards as soon as possible. However, since it is impossible in reality, there is an urgent need for seismic reinforcement measures for existing buildings.
In particular, the older buildings have wider openings and fewer load-bearing walls corresponding to heavy tile roofs, so this application is retrofitted from outside the openings of existing buildings, and living inside the residents. The number of parts is reduced so that construction can be done easily and inexpensively without impeding the environment, and it is easy to carry by downsizing, improving work efficiency at the site, and no new seismic wall is provided. Since it can provide a frame-type seismic reinforcement device that has many excellent features such as not hindering it, the contribution to the activation of seismic reinforcement work-related business is extremely large.

  2 is a perspective view of an L-shaped part A. FIG.   3 is a perspective view of a joint part B. FIG.   Perspective view of cover part C   Explanatory drawing which shows the state which attached the opening of a building and each part   Explanatory drawing showing perspective view and mounting state of foundation fixed hardware

Explanation of symbols

A Parts A
B Joint parts C Cover parts D Frame body E Existing building F Opening a Long piece of grooved steel constituting part A b Short piece of grooved steel constituting part A 1 Screw bolt 2, 2 'groove 3, 3' groove shaped steel Wall of b 4 Reinforcing plate 5 Bottom surface of parts A and B 6 Screw hole for bolt 7 Lower end of frame D 8 Foundation 9 Foundation fixing bracket 10 Anchor bolt 11 Pillar 12 Base 13 Bolt 14 Finishing material

Claims (3)

  Four parts A joined with groove-shaped steel (channel) in an L-shape and four joint parts B that connect and fix parts A with groove-shaped steel of a size that can be fitted into the groove portion of the parts A The skeleton of the frame body D is configured as a set together, and the frame body D is connected and fixed to a pillar, a beam, a base, etc. with a screw bolt or the like along the wall opening F of the existing building E. Frame type seismic reinforcement device   At the festival of joining the groove steel to the L shape, the other groove steel b is placed on the top of the tip of one groove steel a with the opening in the same direction to create a groove and weld firmly The part A according to claim 1, wherein a reinforcing plate is welded to a portion corresponding to an inner tip of the opening of the die steel a and a portion directly below the grooved steel b to increase strength during compression or expansion due to an earthquake.   Cover part C that is large enough to cover part A and has a substantially U-shaped cross section and L-shaped planar part is made of plastic or a thin metal plate, and fits into a frame provided along the wall opening of an existing building The frame-type seismic reinforcement device according to claim 1, wherein the frame-type seismic reinforcement device is made by covering or covering the surface of the frame body.

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