JP6292918B2 - Frame structure and method for reinforcing frame structure - Google Patents

Description

  The present invention relates to a frame structure composed of columns, beams, and the like. More specifically, the present invention relates to a frame structure reinforced by providing a reinforcing material and a method of reinforcing the frame structure with a reinforcing material.

  Japan is known as an earthquake-prone country. In recent years, large earthquakes such as the Tohoku-Pacific Ocean Earthquake, the Hyogoken-Nanbu Earthquake, and the Niigata-ken Chuetsu Earthquake have occurred, and each time they have suffered enormous damage. It was. For example, if production facilities such as factories are damaged by an earthquake, the production function will be stopped, and the related companies will be greatly affected until the function is restored.

  Such a production facility building is generally constructed of a so-called steel structure mainly composed of a steel frame such as an H-shaped steel or a steel pipe. FIG. 8A is a side view showing a part of a typical steel structure. As shown in this figure, the steel structure is composed of a pillar material P and a beam material B rising from the floor surface FL. It is.

  This basic structure may be provided with a reinforcing material for the purpose of earthquake resistance. As a representative example of the reinforcing material, an oblique material C as shown in FIG. As the diagonal member C, angle steel, channel steel, H-shaped steel, steel pipe or steel rod is often used, and by arranging this, the frame structure composed of the column material P and the beam material B is reinforced. As a result, it can more strongly resist external force. As another example of the reinforcing material, a cane material can be given. When the pillar material P is a member having directionality such as H-shaped steel, the diagonal member C reinforces the weak axis direction of the pillar material P, whereas the cane material exhibits the strong axis direction of the pillar material P. It is a member to reinforce. Like the diagonal material C, angle iron, groove steel, etc. are used for a cane material.

  As shown in FIG. 8A, the conventional diagonal member C is arranged diagonally (in some cases, it may be arranged in an oblique direction), and its end portion is formed from the column member P and the beam member B. It was fixed at the corner. FIG. 8B is a diagram showing details of fixing the end portion of the diagonal material C. FIG. As shown in this figure, a gusset plate Gp is welded and fixed to the corner portion, and the end portion of the diagonal material C is bolted to the gusset plate Gp. On the other hand, in the case of a cane member, the end of the cane member is bolted to a gusset plate Gp that is welded and fixed to the surface of the column member P or the beam member B. Thus, according to the conventional method, welding work is required to install the diagonal member C and the cane member.

  The diagonal member C and the cane member may be installed in advance at the same time as the column member P and the beam member B, but may be installed later for the purpose of reinforcing the steel structure in service. When the diagonal material C or the cane material is installed afterwards, the welding work that is indispensable for the installation work may become a problem. In other words, since the welding work involves fire, if welding is kept away from fire, such as storing easily flammable items in a steel-frame building in service (hereinafter simply referred to as “indoor”), this welding is performed. I can't do the work. Also, if the production facility is in operation, it is better to avoid welding work because it affects the production process. Furthermore, when the existing steel structure is comprised with the member unsuitable for welding, since it cannot weld, it becomes difficult to install the diagonal material C and a cane material. The member unsuitable for welding is, for example, a thin member that cannot withstand heat during welding.

  Therefore, Patent Document 1 proposes a steel structure reinforcement technique that does not require welding in order to eliminate the difficulty associated with welding work.

JP 2013-177797 A

  Patent document 1 makes the welding operation unnecessary by bonding the gusset plate Gp to the surface of the pillar material P or the beam material B, and prevents peeling which is a weak point of bonding by providing a peeling prevention means. . FIG. 9 is a partial detail view showing an example of the invention disclosed in Patent Document 1. In FIG. If the invention of patent document 1 is adopted, even if it is a steel structure of an operating production facility or a steel structure composed of members unsuitable for welding, it will be reinforced with diagonal material C or a cane material afterwards. be able to.

  By the way, in the invention of Patent Document 1, since the gusset plate Gp is bonded to the surfaces of the columnar material P and the beam material B, it is desirable that the surface of the columnar material P and the beam material B (particularly the surface to be bonded) is a flat surface. For example, the flange surface of H-shaped steel or the surface of a square steel pipe is suitable for bonding the gusset plate Gp. However, it is not limited to the case where the H-shaped steel or the square steel pipe having a flat surface is used as it is as the column material P or the beam material B, and the column material P or the beam material B may be configured by combining a plurality of members. There is a case where a step is generated on the surface of the pillar material P or the beam material B.

  FIG. 2 is a perspective view showing a pillar material P in which angle steel is combined. The columnar material P shown in this figure is obtained by sandwiching both ends of a steel plate (plate) between a pair of angle steels and fixing them with bolts penetrating the angle steel and the plate. The surface corresponding to the H-shaped steel flange in the pillar material P is formed of a pair of angle steels and should be a flat surface originally, but depending on the position accuracy of the bolt holes, There may be significant steps in between. When the gusset plate Gp is bonded in a state where there is a step, the adhesive is applied to the surface of the angle steel deeper than the other by the thickness of the step. A thickly applied adhesive is difficult to maintain its state (so-called “easy to sag”), and is inferior in the workability of the bonding work and tends to decrease the bonding strength. Therefore, it is difficult to adopt the invention of Patent Document 1 for such a column material P, and the problem of the prior art that requires welding work cannot be solved appropriately.

  The subject of the present invention is to solve the conventional problem, that is, no welding work is required when installing diagonal members or brace members, and there is a step on the surface of the column member or beam member. It is also possible to employ a frame structure and a method for reinforcing the frame structure.

  In the present invention, the gusset plate is attached to a pillar material or a beam material (hereinafter referred to as “pillar material”) by bonding, the gusset plate is prevented from being peeled off, and a step generated on the surface of the pillar material is eliminated in advance. It was done based on the idea of keeping it.

  The framework structure of the present invention is a structure including at least a column material, a beam material, and a reinforcing material. The column member or the like is provided with a joint, and one end (or both ends) of the reinforcing member is connected to the joint. The columnar material or the like on which the joint portion is provided includes a plurality of constituent members having flat surfaces, and the flat surfaces of at least two of the constituent members are combined so as to be substantially parallel (including parallel) with a step. is there. The joint portion includes a non-land adjustment plate, a gusset plate for connecting the reinforcing material, and a peeling prevention means, and the non-land adjustment plate is one of the two component members combined. The “adhesion surface” is formed of substantially the same plane (including the same plane) by the flat surface of the non-land adjustment plate and the other component member. The gusset plate is bonded and fixed to the bonding surface, and the separation preventing means sandwiches a part of the constituent members between the gusset plate and the counter plate, and the gusset plate and the counter plate are bolted in this state.

  In the frame structure of the present invention, a pillar material or the like on which a joint portion is provided may be made of angle steel or groove steel. In this case, the columnar material or the like provided with the joint includes a component made of angle steel or channel steel and a center plate or lattice material, and the end of the center plate or lattice material is sandwiched between at least two component members. (Or the center plate and the end of the lattice material are overlapped on one angle steel) and fixed.

  In the frame structure of the present invention, the adhesive surface formed by the flat surface of the unevenness adjusting plate and the constituent members is made to be substantially the same plane (including the same plane), so that an adhesive with an appropriate thickness is applied. You can also. In this case, the adhesive is such that the total thickness of the thickness of the unevenness adjusting plate and the coating thickness of the adhesive is substantially equal (including equal thickness) to the step formed by the flat surfaces of the two combined members. Apply.

  The method for reinforcing a frame structure of the present invention is a method for reinforcing a frame structure including at least a column material and a beam material, a step of installing a joint portion on a pillar material or the like (joint portion installation step), and a gusset of the joint portion. A step of connecting one end (or both ends) of the reinforcing material to the plate is provided (reinforcing material connecting step). In addition, the pillar material or the like for installing the joint portion includes a plurality of constituent members having a flat surface, and the flat surfaces of at least two constituent members are combined so that a level difference is generated and substantially parallel (including parallel). It is. The joint installation step includes a non-land adjustment plate attachment step, a gusset plate adhesion step, and a peeling prevention step. Among these, in the non-land adjustment plate attachment step, one of the two combined components is combined. A non-land adjustment plate is attached to the flat surface of the component member, and an adhesion surface composed of substantially the same plane (including the same plane) is formed by the non-land adjustment plate and the flat surface of the other component member. In the gusset plate bonding process, the gusset plate is bonded to the bonding surface of the pillar material or the like, and in the peeling prevention process, the opposing plate is arranged so that a part of the constituent member is sandwiched between the gusset plate and the opposing plate. Tighten the plate and counter plate with bolts.

  The method for reinforcing a frame structure according to the present invention is a method of applying an adhesive having an appropriate thickness so that the adhesion surface formed by the flat surface of the unevenness adjusting plate and the constituent members is substantially the same plane (including the same plane). It can also be. In the unevenness adjusting plate mounting step in this case, the total thickness of the unevenness adjusting plate thickness and the adhesive application thickness is substantially equal to the step formed by the flat surfaces of the two combined members (equal thickness). The adhesive is applied so that the

The “frame structure and the reinforcing method of the frame structure” of the present invention have the following effects.
(1) Since a reinforcing material is installed, a structure having a high strength can be obtained as compared with a frame structure composed only of a pillar material and a beam material. As a result, resistance to external forces such as earthquakes can be improved, and steel buildings can be used with more peace of mind.
(2) Since no welding work is required, there is no fear of fire and it can be used in any steel structure. For example, it can be employed in warehouses that store flammable items, facilities that handle chemicals, and the like.
(3) Further, since no welding work is required, the influence on the room is small, and when the target is a production facility, production activities can be continued.
(4) Since the peeling prevention means is provided, it is possible to prevent the gusset plate from being peeled off by an external force in the out-of-plane direction.
(5) Even when there are steps on the surfaces of the pillars and beams, there is no need to apply a thick adhesive (for example, a thickness that fills the steps). Accordingly, since the adhesive is difficult to sag when applied, the adhesion work is facilitated, and the adhesive can be applied with an appropriate thickness (for example, within 3 mm), so that a predetermined strength can be sufficiently exerted.

(A) is a side view showing an example of a frame structure when a diagonal member is installed, and (b) is a side view showing an example of a frame structure when a cane material is installed. The perspective view which shows the column material which combined the structural member. (A) is sectional drawing in case the structural member of column material is angle steel, (b) is sectional drawing in case the structural member of column material is channel steel. The perspective view which notched some in the figure for demonstrating the detail of a junction part. (A) is a perspective view which shows the state which attached the unevenness adjustment board, (b) is sectional drawing which shows the state which attached the unevenness adjustment board. The perspective view which shows the state by which the adhesive agent was apply | coated to the adhesive surface which consists of a non-land adjustment board and a structural member in order to adhere and fix a gusset plate. The figure for demonstrating the detail of the junction part which connects a cane material, and is the perspective view which notched some. (A) is a side view showing a part of a conventional typical steel structure, (b) is a partial detail view showing a state in which an end of an oblique member is connected to a gusset plate fixed by welding. The partial detail drawing which shows an example of the reinforcement technique of the steel structure which adhere | attaches a gusset plate.

  An example of the framework structure and the reinforcing method of the framework structure of the present invention will be described with reference to the drawings.

1. 1 is a side view showing an example of a frame structure of the present invention. FIG. 1A is a side view when an oblique member 31 is installed, and FIG. 1B is a side view when a brace member 32 is installed. This frame structure is a part of a main structure constituting a building such as an office building or a factory facility, and is formed by a column member 10, a beam member 20, and a reinforcing member 30 such as a diagonal member 31 and a cane member 32. As shown in FIG. 1, the two pillar members 10 are raised substantially vertically from the floor surface FL, the beam member 20 is disposed substantially horizontally at a position away from the floor surface, and the reinforcing member 30 includes the pillar member 10 and It is installed diagonally or obliquely in a frame (in-plane) made of the beam material 20.

  The interval between the two column members 10 and the height from the floor surface FL to the beam member 20 can be appropriately designed according to the target building, but in the case of a normal production facility, the interval between the column members 10. 5 to 6 m, and the installation height of the beam member 20 can be 3 to 4 m. FIG. 1 is merely an example showing the present invention, and any arrangement is included in the present invention as long as it has the technical features of the present invention.

  The reinforcing member 30 (the diagonal member 31 and the cane member 32) can be installed together with the pillar member 10 and the beam member 20 from the time of construction of the building, but for the purpose of reinforcing the building already in use. It can also be installed. In any case, the end portion of the reinforcing member 30 is fixed with a bolt to a gusset plate 41 that is bonded and fixed to the surface of the column member 10 or the beam member 20, as shown in FIG. The column member 10 and the beam member 20 to which the gusset plate 41 is bonded are a combination of angle steel, groove steel, etc. (hereinafter referred to as “component member 11”), for example, as shown in FIG. Each of both ends of the center plate 12 is sandwiched between a pair of angle steels 11a (constituent members 11) and fixed with bolts 13 penetrating the angle steel 11a and the center plate 12.

  The column member 10 and the beam member 20 composed of a plurality of component members 11 have a composite surface in which flat surfaces of the plurality of component members 11 are arranged substantially in parallel, and this composite surface corresponds to, for example, a flange of an H-shaped steel. It becomes a surface to which the gusset plate 41 is adhered. Although this synthetic surface should be a uniform flat surface, the flat surfaces of the constituent members 11 are displaced depending on the manufacturing accuracy, that is, a corresponding step is provided on the synthetic surface. When the gusset plate 41 is bonded in a state where there is a step, there are various problems as described above, and a non-land adjustment plate is installed on the flat surface of the component member 11 deeper than the other in order to eliminate this step. The A substantially uniform flat surface is formed by the flat surface of the unevenness adjusting plate and the other component member 11 (the component member 11 on which the unevenness adjusting plate is not installed), and the gusset plate 41 is formed as an adhesive surface. Glued.

  Hereafter, it explains in full detail for every main element which comprises this invention.

2. Column Material The column material 10 is a member that resists bending moment, shear force and axial force due to vertical and horizontal loads, and also serves as a fulcrum for supporting the beam material 20. As described above, the column member 10 to which at least the gusset plate 41 is bonded is a combination of the constituent members 11 and has the configuration shown in the perspective view of FIG. That is, a central plate 12 corresponding to an abdominal plate (web) of H-shaped steel is arranged in the vertical direction, and both ends thereof are sandwiched between two sets of angle steel 11a (component member 11) (or one angle steel) 11a) and the bolts 13 are inserted into the two angle irons 11a and the central plate 12 and tightened to form the pillar material 10, which is installed on the pedestal plate laid on the floor surface. The In addition, the angle iron 14 for reinforcement is generally installed along the center plate 12 between two sets of angle steel 11a.

  As shown in FIG. 2, in the angle steel 11 a that is a set of two, both flat surfaces are combined substantially in parallel (including parallel), and a composite surface is formed by these two flat surfaces. This synthetic surface corresponds to a flange of H-section steel, but is not a uniform plane, and a step is generated between both flat surfaces. FIG. 3A is a cross-sectional view in the case where the constituent member 11 of the column member 10 is an angle steel 11a. In the example of this figure, compared to the flat surface of the left angle steel 11a, the flat surface of the right angle steel 11a is disposed deeper (on the center side of the member cross section), and there is a step on both flat surfaces. I understand that there is. FIG. 3B is a cross-sectional view in the case where the constituent member 11 of the column member 10 is a grooved steel 11c. In this case as well, the flat surface of the right grooved steel 11c is arranged deeper than the left side. Therefore, there is a step on both flat surfaces.

3. Beam Material The beam material 20 is a member that resists bending moment and shear force mainly due to vertical load. Similar to the column member 10, the beam member 20 to which at least the gusset plate 41 is bonded is a combination of the constituent members 11, and is formed from the flat surface of the angle steel 11 a (or the channel steel 11 c). There is also a step on the composite surface.

4). Reinforcing Material Reinforcing material 30 reinforces the frame structure composed of pillar material 10 and beam material 20, and is specifically a member such as diagonal material 31 or cane material 32. The reinforcing member 30 shown in FIG. 1A is also called a diagonal member or a brace member because it is disposed at an angle with respect to the main shaft (consisting of the axis of the column member 10 and the beam member 20). On the other hand, the reinforcing member 30 shown in FIG. 1 (b) supports and reinforces the beam member 20 from below, and is called a cane member. Since the reinforcing material 30 mainly acts on the axial tensile force and the axial compressive force, a member having a considerable strength in the axial direction of the member is used. For example, a grooved steel, an angle steel, a steel rod, etc. can be exemplified. In addition, various members such as H-shaped steel and steel pipe can be used. In addition, when using a steel bar as the reinforcing material 30, a turnbuckle can be provided in the middle of the member to enable length adjustment.

  In general, the diagonal member 31 is disposed so as to reinforce the weak axis direction of the column 10 or the beam member 20 (hereinafter referred to as “column member 10 etc.”). That is, the diagonal member 31 is installed on a “frame surface” composed of the column member 10 and the beam member 20, and the in-plane direction of the “frame surface” coincides with the weak axis direction of the column 10 and the like. In addition, in the case of the support | pillar 10 etc. which combined the structural member 11, since the synthetic | combination surface corresponds to the flange of H-shaped steel and the center plate 12 corresponds to a web as stated above, the surface direction of the center plate 12 is the support | pillar 10 side. The strong axis direction such as is perpendicular to the weak axis direction. Further, the cane member 32 is usually arranged to reinforce the strong axis direction of the support column 10 and the like. That is, the cane member 32 is installed on a “frame surface” composed of the column member 10 and the beam member 20, and the in-plane direction of the “frame surface” coincides with the strong axis direction of the column 10 and the like.

5. Joint Part FIGS. 4 to 7 are detailed views showing a joint part 40 for attaching the reinforcing member 30 to the pillar member 10 or the like. As shown in FIG. 4, the joint 40 includes at least a non-land adjustment plate 42, a gusset plate 41, and peeling prevention means. 4-7 has shown the case where the junction part 40 is provided in the column material 10, but not only this but the junction part 40 can also be provided in the beam material 20. FIG. For example, a diagonal member 31 (so-called horizontal brace) arranged in the horizontal direction can be attached between the beam members 20. Specifically, one end of the diagonal member 31 is connected to the diagonal member 20 provided on the beam member 20. 40, and the other end of the diagonal member 31 is attached to the joint 40 for the diagonal member of the other beam member 20. Hereinafter, each member constituting the joint 40 will be described in detail.

(Non-landing adjustment plate)
FIGS. 5A and 5B are views showing a state in which the unevenness adjusting plate 42 is attached, in which FIG. 5A is a perspective view and FIG. 5B is a cross-sectional view thereof. As shown in this figure, the unevenness adjusting plate 42 fills a step generated on the composite surface of the column member 10 combined with the component member 11 and is installed on the flat surface of the component member 11 deeper than the other. The By installing the unevenness adjusting plate 42, the flat surface of the other component member 11 and the unevenness adjusting plate 42 form an “adhesive surface” that is a substantially uniform flat surface.

  The unevenness adjusting plate 42 is applied to the surface of the column member 10 or the like by applying an adhesive on one side. In this case, the adhesive can be applied to one entire surface of the uneven adjustment plate 42, but the adhesive may be applied to only a part of the one surface as long as it can be applied to an area necessary for design. Also, the application thickness of the adhesive can be determined by design as appropriate, but it is preferably applied as thin as possible because it is applied to the vertical surface, and more preferably within 3 mm. Since the unevenness adjusting plate 42 is for eliminating the step, as shown in FIG. 5 (b), the total thickness of the unevenness adjusting plate 42 and the adhesive application thickness is It is desirable to design such that the dimensions are substantially the same (including the case where the level difference is equal). That is, the difference between the step formed on the composite surface composed of the flat surfaces of the set of component members 11 and the thickness of the unevenness adjusting plate 42 is designed to be within 3 mm, and the adhesive is applied by this difference. It is preferable.

  When the unevenness adjusting plate 42 is attached to the surface of the columnar material 10 or the like, the surface of the columnar material 10 or the like and the application surface of the unevenness adjusting plate 42 can be made uneven by shot blasting or a wire brush, so that the bonding can be more firmly performed. Therefore, it becomes suitable. As a rough indication of the surface roughness at this time, it is preferable that Rz (10-point average roughness) is 30 or more.

  The adhesive used here can be arbitrarily selected from those conventionally used, but it is desirable to maintain the state even if it is applied to a vertical surface (so-called “no sag”). A mixed epoxy adhesive can be shown. Further, if an adhesive that cures within 24 hours is selected, the influence on the subsequent process can be suppressed, which is more preferable.

(Gusset plate)
As shown in FIG. 6, the gusset plate 41 is bonded and fixed by an adhesive applied to an adhesion surface composed of a non-land adjustment plate 42 and a flat surface of the component 11 (one on which the non-land adjustment plate 42 is not installed). It has an adhesive part and a connecting part. The bonding portion is a portion that contacts the bonding surface, and the connecting portion is a portion that actually attaches the end portion of the reinforcing material 30. The adhesion of the gusset plate 41 is the same as the adhesion method, the adhesive, and the design method described in the adhesion between the unevenness adjusting plate 42 and the pillar material 10 and the like.

  As shown in FIG. 4, a gusset plate 41 (hereinafter referred to as “diagonal gusset plate 41”) for connecting the diagonal members 31 is formed of a single material (for example, one steel plate) and the bonded portion. A connecting part is formed. A portion that contacts and adheres to the bonding surface is an adhesive portion, and a portion that protrudes from the column member 10 and connects to the diagonal member 31 is a connecting portion. As described above, the in-plane direction in which the diagonal member 31 is installed coincides with the weak axis direction of the column member 10 or the like, and the diagonal gusset plate 41 is bonded to the bonding surface of the column member 10 or the like. That is, the diagonal material gusset plate 41 is bonded to the bonding surface of the column member 10 or the like that is substantially parallel (including parallel) to the in-plane direction.

  On the other hand, a gusset plate 41 for connecting the brace material 32 (hereinafter referred to as a “cane material gusset plate 41”) has two materials (an adhesive plate 41a and a connecting plate 41b) as shown in FIG. For example, an adhesive part is formed on the adhesive plate 41a, and a connecting part is formed on the connecting plate 41b. The connecting plate 41b is abutted substantially perpendicularly (including vertically) to the adhesive plate 41a and is fixed by welding at a factory or the like. As described above, the in-plane direction in which the cane member 32 is installed coincides with the strong axis direction of the column member 10 and the like, and the gusset plate 41 for the cane member is bonded to the bonding surface of the column member 10 and the like. That is, the cane material gusset plate 41 is bonded to the bonding surface of the column member 10 which is substantially perpendicular (including vertical) to the in-plane direction.

(Peeling prevention means)
If the bonding area required in design is secured and bonded and fixed, the gusset plate 41 will not peel from the column member 10 or the like against a load in the shearing direction in which the bonding surface tends to shift. For example, in the case of the diagonal member 31, it is possible to prevent the deviation mainly having the horizontal direction as the shear direction, and in the case of the brace material 32, the deviation mainly having the vertical direction as the shear direction can be prevented. However, the amount of adhesion (adhesion area) that does not cause separation with respect to an external force acting in the direction in which the adhesion surface is to be peeled off, that is, the direction perpendicular to the gusset plate 41 (hereinafter referred to as “the adhesion surface outward direction”) It is difficult to calculate, in other words, it is extremely difficult to resist the external force in the direction outside the bonding surface only by bonding and fixing. The frame structure as shown in FIG. 1 receives loads from various directions, and it is naturally assumed that an external force in the direction outside the bonding surface acts. Then, the column member 10 and the like are bent and deformed in the direction outside the bonding surface, and a portion that cannot contact the flat gusset plate 41 appears. As a result, the gusset plate 41 begins to peel. Therefore, the peeling prevention means is installed so that the gusset plate 41 is not peeled off from the pillar material 10 or the like even when a force is applied from the outside of the bonding surface.

  The basic structure of the peeling prevention means is to sandwich a part of the column member 10 and the like between a gusset plate 41 and another plate (hereinafter referred to as “opposing plate 43”) and tighten it with a bolt. 4 and 7, the counter plate 43 is disposed inside the angle steel 11a, that is, a part of the angle steel 11a is sandwiched between the counter plate 43 and the gusset plate 41, and bolting is performed in this state. In this case, a normal bolt can be used as the bolt.

  The peeling preventing means will be described in more detail. As shown in FIGS. 4 and 7, the peeling preventing means is composed of a counter plate 43 and a fastening bolt 44. The tightening bolt 44 is inserted when it is separated from the angle steel 11a (the angle steel 11a does not penetrate). That is, the opposing plate 43 has a contact portion for sandwiching the angle steel 11a and an overhang portion that does not overlap with the angle steel 11a for insertion of the tightening bolt 44, and a bolt hole is provided in this overhang portion. The gusset plate 41 is also provided with a bolt hole for inserting the fastening bolt 44. In this way, the bolts 44 provided in the gusset plate 41 and the bolt holes in the projecting portion of the counter plate 43 are aligned with each other, and the tightening bolts 44 are inserted.

  Of course, there is no angle steel 11 a between the gusset plate 41 and the protruding portion of the counter plate 43. That is, a gap is partially formed between the gusset plate 41 and the counter plate 43. A spacer 45 can be interposed in the gap as shown in FIG. If a bolt hole is also provided in the spacer 45 and the gusset plate 41 and the counter plate 43 are tightened with the tightening bolts 44 after the spacer 45 is sandwiched, the spacer 45 can be tightened more firmly.

6). Attachment of Reinforcing Material and Gusset Plate The end of the diagonal member 31 is connected to the connecting part of the diagonal member gusset plate 41. A bolt hole is provided in the connecting portion, and a bolt hole is also provided at the end of the diagonal member 31, and both bolt holes are combined and fastened by a high strength bolt 50. On the other hand, the gusset plate 41 for the cane member is composed of the adhesive plate 41a and the connecting plate 41b as described above, and the end of the cane member 32 is connected to the connecting plate 41b. The connecting plate 41b is provided with a bolt hole, and similarly, a bolt hole is also provided at the end of the cane member 32, and both bolt holes are combined and fastened with a high-strength bolt 50. The bolt used here can be a normal bolt depending on the situation, but in principle it is a friction joint with a high-strength bolt. In addition, if it is a high strength bolt, it can select suitably from conventional things, such as the high strength hexagon bolt for friction joining, the structural torcia type high strength bolt, the hot dip galvanized high strength bolt.

7). Reinforcing method for frame structure The method for reinforcing a frame structure according to the present invention is described by taking as an example a case where a frame structure composed of a column material 10 and a beam material 20 is reinforced by attaching an oblique member 31 to a column 10 combined with an angle steel 11a. explain.
First, the existing support | pillar 10 used as reinforcement object is demonstrated. This support column 10 sandwiches both ends of a central plate 12 arranged in the vertical direction with a pair of angle steels 11a (component members 11), and bolts 13 are attached to these two angle steels 11a and the central plate 12. The structure is inserted and tightened, and is installed on a pedestal plate laid on the floor surface FL. In addition, the support | pillar 10 is good also as a structure which formed the flange with the lattice material by angle steel etc., and attached the angle steel 11a to both flanges.
Hereinafter, each step will be described.
Next, in order to fill the step generated on the composite surface constituted by the flat surfaces of the two angle steels 11a, the unevenness adjusting plate 42 is bonded to the flat surface of the angle steel 11a deeper than the other. At this time, the adhesive may be applied so that the total thickness of the unevenness adjusting plate 42 and the applied thickness of the adhesive is substantially equal to the step. As a result, an “adhesion surface” that is a substantially uniform flat surface is formed by the flat surface of the angle steel 11 a and the unevenness adjusting plate 42. (Non-landing plate installation process)
An adhesive is applied to the “adhesion surface”, and the gusset plate 41 is adhered and fixed to the column member 10. Further, the gusset plate 41 is bonded and fixed to the “bonding surface” at a predetermined position of the other column member 10. At this time, the gusset plate 41 is bonded to a surface of the column member 10 that is substantially parallel to the in-plane direction in which the diagonal member 31 is installed. (Guset plate bonding process)
A counter plate 43 is disposed inside each column member 10, and a spacer 45 is disposed between the gusset plate 41 and the counter plate 43 (a gap without a flange), and tightened with a tightening bolt 44. (Peeling prevention process)
One end of the diagonal member 31 is connected to the connecting portion of the gusset plate 41 fixed to one column member 10. The other end of the diagonal member 31 is connected to a gusset plate 41 fixed to the other column member 10. At this time, the bolt holes provided on both sides are used, and tightening with high-strength bolts is performed in the sequence of primary tightening, marking and final tightening. (Reinforcement connection process)
By performing the above steps, the frame structure is reinforced.

  The “framework structure and method for reinforcing the frame structure” of the present invention can be used not only in production facilities such as factories, but also in all structures such as warehouses and gymnasiums.

DESCRIPTION OF SYMBOLS 10 Column material 11 Component member 11a Angle steel 11c (as a component member) Channel steel 12 (As component member) 12 Center plate 13 Bolt 14 Reinforcement angle steel 20 Beam material 30 Reinforcement material 31 Diagonal material 32 Cane material 40 Joining portion 41 Gusset plate 41a Adhesion plate 41b (for wand gusset plate) Connection plate 41 (for wand set material gusset plate) 42 Uneven adjustment plate 43 Opposite plate 44 (for peeling prevention unit) Tightening bolt 45 Spacer (for peeling prevention means) 50 High-strength bolt B Beam material C Diagonal material FL Floor Gp Gusset plate P Column material

Claims (5)

In the frame structure with column material, beam material and reinforcing material,
One end or both ends of the reinforcing member are connected to a joint provided on the column member or the beam member,
The column member or the beam member provided with the joint portion includes a plurality of constituent members having flat surfaces, and the flat surfaces of at least two constituent members among them are combined so that a step is generated to be parallel or substantially parallel. It has been
The joint is provided with uneven surface adjustment plate, and a gusset plate for connecting said reinforcing member,
The unevenness adjusting plate is attached to the flat surface of one of the two combined members, and the unevenness adjusting plate and the flat surface of the other constituent member are on the same plane or substantially the same plane. Forming an adhesive surface,
The gusset plate is bonded and fixed by an adhesive applied to the bonding surface of the pillar material or the beam material,
A skeleton structure characterized in that a part of the constituent member is sandwiched between the gusset plate and the opposing plate, and has a peeling prevention means for fastening the gusset plate and the opposing plate with bolts. The column member or the beam member provided with the joint portion includes a component member made of angle steel or channel steel, and a central plate or a lattice material,
The frame structure according to claim 1, wherein an end portion of the central plate or lattice material is fixed by the component member.   The unevenness adjusting plate is bonded to the flat surface of the constituent member, and the total thickness of the unevenness adjusting plate and the adhesive application thickness is determined from the combined flat surface of the two constituent members. The frame structure according to claim 1, wherein the frame structure is equal to or substantially equal to the step. In the reinforcing method of the frame structure in which the reinforcing material is installed in the frame structure having the column material and the beam material,
A plurality of constituent members having a flat surface are included, and a joint portion is installed on the column member or the beam member that is combined such that at least two flat surfaces of the constituent members are stepped to be parallel or substantially parallel. The joint installation process;
A reinforcing material connecting step of connecting one end or both ends of the reinforcing material to a gusset plate forming the joint,
Further, the joint installation step includes a non-land adjustment plate attachment step, a gusset plate adhesion step, and a peeling prevention step,
In the unevenness adjusting plate attaching step, the unevenness adjusting plate is attached to the flat surface of one of the two combined members, and the same by the flat surface of the unevenness adjusting plate and the other constituent member. Forming an adhesive surface consisting of a plane or substantially the same plane;
Wherein the gusset plate bonding step, with applying an adhesive to said bonding surface of said pillar or the beam member, and adhere the said gusset plate to the adhesive surface,
In the peeling prevention step, the opposing plate is disposed so that a part of the constituent member is sandwiched between the gusset plate and the opposing plate, and the gusset plate and the opposing plate are tightened with bolts. Reinforcement method.   In the unevenness adjusting plate mounting step, the unevenness adjusting plate is bonded to the flat surface of the component member, and the total thickness of the unevenness adjusting plate and the coating thickness of the adhesive is combined. 5. The method for reinforcing a frame structure according to claim 4, wherein the adhesive is applied so as to be equal to or substantially equal to the step formed by flat surfaces of two constituent members.

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