JP6292919B2 - 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, major 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. 9A is a side view showing a part of a typical steel structure. As shown in this figure, the basic structure of the steel structure is composed of a column material P and a beam material B. FIG.

  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. 9A, the conventional diagonal material C is disposed diagonally (in some cases, it may be disposed in an oblique direction), and its end portion is made of a column material P and a beam material B. It was fixed at the corner. FIG. 9B is a diagram showing details of fixing the end of the diagonal C. 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. 10A is a partial detail view showing an example of the invention disclosed in Patent Document 1. 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.

  Incidentally, as in Patent Document 1, when two diagonal members C or the like are attached to the column member P or the beam member B, the column member P or the beam is obtained by applying a tensile force or a compressive force from the left and right diagonal members C. The material B may receive an eccentric (torsion) moment. If the pillar material P and beam material B are H-shaped steel, they can resist the eccentric moment to some extent because they have the abdomen (web). Resulting in. Furthermore, when the non-full member without a web is used for the column material P and the beam material B instead of the H-shaped steel which is a full member provided with a web, this twist problem appears more remarkably.

  FIG. 10B is a cross-sectional view showing a state in which the eccentric moment M is applied to the columnar material P using the non-full member. The columnar material P shown in this figure has a structure in which a steel material such as a steel plate (plate PL) or an angle steel is arranged in the center and is sandwiched between a pair of angle steel An. Specifically, when the plate PL is arranged at the center, both ends of the plate PL are sandwiched between two sets of angle steel An and the angle steel An and the plate PL are fixed. On the other hand, when the angle steel is arranged in the center, a set of two angle steels An is overlapped and fixed to the angle steel. Such column materials P are often found in old steel buildings, and generally thin plates PL are used. Although this plate PL corresponds to an H-shaped steel flange, the plate PL and the like are partially arranged in the column axis direction, and therefore there is a section where there is no plate PL or the like. Therefore, the eccentricity shown in FIG. When the moment M acts on the pillar material P, the thin plate PL mainly bears the eccentric moment M. In other words, the columnar material P using the non-full member cannot resist the eccentric moment M in many cases.

  An object of the present invention is to solve the conventional problem, that is, a frame that does not require welding work during installation of the diagonal member and can resist the eccentric moment generated by the diagonal member C or the like. It is to provide a structure and a method for reinforcing a frame structure.

  The present invention attaches a side plate corresponding to a gusset plate by adhesion to a pillar material composed of a plurality of members, and also prevents the side plate from peeling off, and further provides a reinforcing plate in the cross section of the pillar material etc. This was done based on the idea of resisting the eccentric moment when installed.

  The framework structure of the present invention is a structure including at least a column material, a beam material, and a reinforcing material. A column member or a beam member (hereinafter referred to as “column member or the like”) is provided with a joint portion, and one end (or both ends) of the reinforcing member is connected to the joint portion. The joint portion includes two side plates and a peeling prevention body, a mounting plate, and a reinforcing plate that are attached to each side plate. Of these, the two side plates are opposed to each other with a pillar material or the like interposed therebetween. In this state, it is bonded and fixed to a pillar material or the like. The peeling prevention body includes an opposing plate and a fastening bolt, and these are fixed by the fastening bolt in a state where the side plate and the opposing plate sandwich a part of a pillar material or the like. The mounting plate is fixed to the side plate or the opposing plate in an arrangement that is perpendicular or substantially perpendicular to the side plate or the opposing plate. The reinforcing plate is disposed between the two side plates, and both ends thereof are fixed to the mounting plate.

  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. The column member or the like in this case includes a component member made of a plurality of angle steels or channel steels and a central plate or lattice material, and sandwiches an end of the central plate or lattice material with at least two component members (or The center plate and the end of the lattice material are fixed on one angle steel.

  The frame structure of the present invention may be configured such that the end of the reinforcing member is connected to the side plate of the joint.

  The frame structure of the present invention may be configured such that the end portion of the reinforcing member is connected to the reinforcing plate in the joint portion. In this case, the reinforcing plate can be arranged so as to be substantially parallel (including parallel) to the axial direction of the reinforcing material.

  The method for reinforcing a frame structure according to the present invention is a method for reinforcing a frame structure including at least a column member and a beam member, a step of installing a joint portion on a column member or the like (joint portion installation step), and a reinforcement member at the joint portion. A step (reinforcing material connecting step) of connecting one end (or both ends) of the. In addition, the joint installation process includes an adhesion process for bonding two side plates to a pillar material, etc., a peeling prevention process, and a reinforcement plate installation process. Two side plates are arranged so as to face each other, and in this state, these side plates are bonded and fixed to a pillar material or the like. In the peeling prevention step, the counter plate and the side plate are arranged so as to sandwich a part of the pillar material or the like, and in this state, the counter plate and the side plate are fixed with a fastening bolt. In the reinforcing plate installation step, a reinforcing plate is disposed between the two side plates, and both ends of the reinforcing plate are attached to a mounting plate fixed vertically or substantially perpendicular to the side plate or the opposing plate.

  In the reinforcing method of the frame structure of the present invention, the reinforcing material can be connected to the side plate of the joint in the reinforcing material connecting step.

  In the reinforcing method of the frame structure of the present invention, the reinforcing material can be connected to the reinforcing plate in the joint in the reinforcing material connecting step. In this case, the reinforcing plate can be arranged so as to be substantially parallel (including parallel) to the axial direction of the reinforcing material.

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 side plate from being peeled off by an external force in the out-of-plane direction.
(5) Since the reinforcing plate is arranged in the cross section of the column member or the beam member, the resistance force against the eccentric (torsion) moment is dramatically improved as compared with the conventional case. In particular, in the case of a column member or a beam member using a non-full member, a difference in effect from the conventional case appears significantly.
(6) When the reinforcing material is connected to the reinforcing plate, the reinforcing material is accommodated in the frame structure, so that a predetermined space is not required outside the frame structure. Therefore, the reinforcing material can be installed relatively easily even in a frame structure provided in a narrow place with spatial limitations.

The side view which shows an example of the frame structure of this invention. The perspective view which shows the column material which combined the structural member. (A) is sectional drawing in case the structural member of a synthetic | combination column is angle steel, (b) is sectional drawing in case the structural member of a synthetic column is channel steel. The perspective view for demonstrating the detail of a junction part. Sectional drawing which modeled the resistance of the reinforcement plate with respect to the eccentric moment. The perspective view which shows the detail of the junction part to which the reinforcement plate was attached with the vertical attitude | position. (A) is the perspective view which looked at the junction part in which the reinforcement plate was attached in parallel with the axial direction of the reinforcing material from the side, (b) is the junction part in which the reinforcement plate was attached in parallel to the axial direction of the reinforcement material. The perspective view seen from the front side. (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. (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. (A) is a fragmentary detail view which shows an example of the conventional reinforcement technique of the steel structure which adhere | attaches a gusset plate, (b) is sectional drawing which shows the state which the eccentric moment acted on the column material using a non-full stomach member.

  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. Overall Overview FIG. 1 is a side view showing an example of a framework structure of the present invention. 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 or a cane member. As shown in FIG. 1, the two pillar members 10 are raised substantially vertically from the floor portion 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 made of the beam material 20.

  The interval between the two column members 10 and the height from the floor surface to the beam member 20 can be appropriately designed according to the target building. In the case of a normal production facility, the interval between the column members 10 is Examples of the installation height of the beam member 20 are 5 to 6 m and 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 can be installed together with the column member 10 and the beam member 20 from the time of construction of the building, but can also be installed later for the purpose of reinforcing the building already in use. As shown in FIG. 1, the end portion of the reinforcing member 30 is connected to a joint 40 provided on the column member 10 or the beam member 20. The joint portion 40 is mainly composed of a side plate, an anti-peeling body, a mounting plate, and a reinforcing plate. The side plates are used as a set of two, and are bonded and fixed to the surfaces of the column member 10 and the beam member 20. The peeling prevention body is disposed at a position facing the side plate, and is fixed to the side plate in a state where a part of the column member 10 or the beam member 20 is held together with the side plate. The reinforcing plate is installed between the two side plates and resists an eccentric moment generated in the cross section of the column member 10 and the beam member 20. The reinforcing member 30 is connected to a side plate or a mounting plate fixed to the reinforcing plate in the joint portion.

  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. Therefore, the member used as the column member 10 exhibits such performance, and examples thereof include H-shaped steel and groove-shaped steel. Alternatively, the column member 10 may be composed of a plurality of members.

  A column member 10 (hereinafter referred to as “composite column 10C”) composed of a combination of a plurality of constituent members 11 is often found in old steel buildings, and generally has the configuration shown in the perspective view of FIG. As shown in this figure, in the composite column 10C, a central plate 12 corresponding to an abdominal plate (web) of H-shaped steel is arranged in the vertical direction, and two ends of the central plate 12a each constitute a set of angle steel 11a (component member 11). The base plate 12 is laid on the floor surface (or the center plate 12 is overlapped with one angle steel 11a), and the bolts 13 are inserted into the two angle steels 11a and the center plate 12 and tightened. Installed on a plate. In addition, the angle iron 14 for reinforcement is generally installed along the center plate 12 between two sets of angle steel 11a.

  In the composite column 10C shown in FIG. 2, the flat surfaces of the angle steel 11a including two pairs are combined in parallel (including parallel), and a composite surface is formed by these two flat surfaces. Since this synthetic surface corresponds to a flange of an H-shaped steel, here, this synthetic surface is referred to as a “flange” of the synthetic column 10C for convenience. The flange of the composite column 10C may be a uniform plane, but a step may be formed between both flat surfaces. Synthetic column 10C can be formed using channel steel 11c in addition to angle steel 11a. FIG. 3A is a cross-sectional view when the constituent member 11 of the composite column 10C is an angle steel 11a, and FIG. 3B is a cross-sectional view when the constituent member 11 of the composite column 10C is a channel steel 11c. is there.

3. Beam Material The beam material 20 is a member that resists bending moment and shear force mainly due to vertical load. The beam member 20 shown in FIG. 1 is a ceiling beam, but if this is a multi-story building, it will be a beam that supports the floor of the upper floor. That is, the beam member 20 can be said to be a member that directly bears the weight of a person or an object on the floor. Therefore, the member used as the beam member 20 exhibits such performance, and examples thereof include H-shaped steel. Further, similarly to the column member 10, a beam member 20 (hereinafter referred to as “composite beam 20 </ b> C”) composed of a combination of a plurality of constituent members 11 such as angle irons can be used.

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 a cane material. The reinforcing member 30 shown in FIG. 1 is also referred to as an oblique member or a brace member because it is disposed at an angle with respect to the main axis (consisting of the axis of the column member 10 and the beam member 20). As the reinforcing member 30, a member having a considerable strength in the axial direction of the member is used because axial tension force or axial compression force mainly acts, and examples thereof include a grooved steel, an angle steel, and a steel rod. Various members such as a shape steel and a 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. As described above, the composite surface of the composite column 10C or the composite beam 20C (hereinafter referred to as “composite column 10C etc.”) corresponds to the flange of the H-shaped steel, and the center plate 12 corresponds to the web. Therefore, in the composite column 10C and the like, the surface direction of the central plate 12 is the strong axis direction, and the direction perpendicular to this is the weak axis direction.

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 portion 40 includes at least a side plate 41, a peeling prevention body 42, a mounting plate 43, and a reinforcing plate 44. 4-7 has shown the case where the junction part 40 is provided in the synthetic | combination column 10C, but it is not restricted to this, The junction part 40 can also be installed in the column material 10 using H-section steel. The joint 40 can also be provided in the beam member 20. For example, when diagonal members 31 (so-called horizontal braces) arranged in the horizontal direction are attached between the beam members 20, one end of the diagonal member 31 is attached to the joint 40 provided on the beam member 20, and the other end of the diagonal member 31 is attached. It is attached to the joint 40 of another beam member 20. Hereinafter, each member constituting the joint 40 will be described in detail.

(Side plate)
The side plates 41 are used as a set of two sheets, arranged as shown in FIG. 4 so as to face each other with the composite column 10C therebetween, and are fixed to the flanges. Specifically, an adhesive is applied to one side of the side plate 41, or an adhesive is applied to the flange of the composite column 10C, and the side plate 41 is attached to the surface of the composite column 10C. At this time, the adhesive can be applied to the entire one surface of the side plate 41, but the adhesive may be applied to only a part of the one surface as long as it can be applied to an area required 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.

  When affixing the side plate 41 to the flange surface of the composite column 10C, it is preferable that the flange surface and the affixing surface of the side plate 41 are finished with irregularities by shot blasting, a wire brush, or the like, because it can be more firmly bonded. 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.

(Peeling prevention body)
If the bonding area required by design is secured and bonded and fixed, the side plate 41 will not peel from the composite column 10C due to a load in the shearing direction in which the bonded surface tends to shift. For example, in the case of the diagonal member 31, there is a case where a shift in which the direction of the diagonal member 31 is mainly the shearing direction may occur, but this shift can be prevented if appropriate bonding is performed. However, the amount of adhesion (adhesion area) that does not peel against an external force acting in the direction in which the adhesion surface is to be peeled off, that is, the direction perpendicular to the side plate 41 (hereinafter referred to as “adhesion surface outward direction”) Is difficult to calculate, in other words, it is extremely difficult to resist the external force in the direction outside the adhesive surface only by adhesive fixation. 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 composite column 10C is bent and deformed in the direction outside the bonding surface, and a portion that cannot come into contact with the planar side plate 41 appears. As a result, the side plate 41 begins to peel. Therefore, the peeling prevention body 42 is installed so that the side 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. It is desirable to install two peeling prevention bodies 42 with respect to one side plate 41. Therefore, in this case, the number of the peeling prevention bodies 42 is twice as many as the side plates 41.

  As shown in FIG. 4, the peeling prevention body 42 includes at least a counter plate 42 a and a fastening bolt 42 b. The counter plate 42a of the peeling prevention body 42 is disposed on the back side of the flange of the composite column 10C (the opposite side to which the side plate 41 is bonded). That is, the opposing plate 42a and the side plate 41 sandwich the flange of the composite column 10C, and in this state, the counter plate 42a and the side plate 41 are tightened by the tightening bolts 42b. Thus, since the opposing plate 42a and the fastening bolt 42b fix the side plate 41 from the back side, it is possible to prevent the peeling in the direction outside the bonding surface. In addition, the high volt | bolt bolt or a normal volt | bolt can be suitably used for the fastening volt | bolt 42b used here according to a condition.

  The structure of the peeling preventing body 42 will be described in more detail. The fastening bolt 42b is inserted when it is removed from the component member 11 (the component member 11 does not penetrate). That is, the opposing plate 42a has a contact portion for sandwiching the component member 11 and an overhang portion that does not overlap the component member 11 for insertion of the fastening bolt 42b, and a bolt hole is provided in the overhang portion. One side plate 41 is also provided with a bolt hole for inserting the tightening bolt 42b, and the tightening bolt 42b is inserted in alignment with the bolt hole of the opposing plate 42a.

  Of course, there is no component 11 between the side plate 41 and the protruding portion of the opposing plate 42a. That is, a gap is partially formed between the side plate 41 and the counter plate 42a. A spacer can be interposed in this gap. Bolt holes are also provided in this spacer, and the side plate 41 and the counter plate 42a are tightened with the tightening bolts 42b after the spacer is interposed therebetween, whereby the spacer can be tightened more firmly.

(Mounting plate)
The attachment plate 43 is used for attaching a reinforcing plate 44 described later. The mounting plate 43 is not installed on site to reinforce the frame structure, but is carried in after being factory welded to the opposing plate 42a or the side plate 41 in advance. 4 and 6 are examples in which the mounting plate 43 is factory-welded to the counter plate 42a, and FIG. 7 is an example in which the side plate 41 is factory-welded. When the mounting plate 43 is fixed, the mounting plate 43 is abutted substantially perpendicularly (including vertical) to the opposing plate 42a or the side plate 41, and is fixed by welding in that state. In addition, when attaching the opposing plate 42a or the side plate 41 to which the mounting plate 43 is fixed to the composite column 10C, the mounting plate 43 is disposed so as to face the inside (the cross-sectional center side) of the composite column 10C.

  For example, in FIG. 4, two mounting plates 43 (that is, two sets) are fixed to the opposing plate 42a facing each other. Of course, the number of mounting plates 43 is required for the number (set) of reinforcing plates 44 to be installed, and one or more mounting plates 43 are fixed to one opposing plate 42a (or side plate 41). You can also. Further, as will be described later, the reinforcing plate 44 can be arranged in the vertical direction, arranged in the horizontal direction, or arranged substantially in parallel (including parallel) to the axial direction of the reinforcing material. Are also fixed in the vertical direction, the horizontal direction, or the axial direction of the reinforcing material.

(Reinforcement plate)
As described above, when two reinforcing members 30 are attached to the composite column 10C, an eccentric (torsion) moment is generated in the cross section of the composite column 10C by receiving a tensile force or a compressive force from the left and right reinforcing members 30. There is. The reinforcing plate 44 resists this eccentric moment.

  FIG. 5 is a cross-sectional view schematically showing the resistance of the reinforcing plate 44 against the eccentric moment. In this figure, two reinforcing members 30 are pulled and a rightward tensile force is generated. Along with this, in the cross section of the composite column 10C, a force (arrow on the right side in the figure) is generated in the direction toward the center of the cross section from the central plate 12 on the reinforcing material 30 side (right side in the figure), A force in the direction away from the center of the cross section (left arrow in the figure) is generated.

  If there is no reinforcing plate 44, these forces generated in the cross section of the composite column 10C act as an eccentric moment and act on the component member 11 and the central plate 12, and as a result, the component member 11 that is a thin-walled member and The central plate 12 cannot resist this eccentric moment. On the other hand, if a reinforcing plate 44 using a steel plate or the like is installed, the compressive strength of the reinforcing plate 44 resists the pushing force on the right side of the cross section, and the tensile strength of the reinforcing plate 44 against the pulling force on the left side of the cross section. Can resist with strength. As a result, it is possible to avoid the occurrence of an eccentric moment in the cross section of the composite column 10C. That is, by installing the reinforcing plate 44, the composite column 10C can reinforce the frame structure without receiving an eccentric moment. In FIG. 5, the reinforcing plate 44 is installed in both the compression region on the right side of the central plate 12 and the tensile region on the left side of the central plate 12, but the reinforcing plate 44 can be installed only in the compression region depending on the situation. .

  As described above, the reinforcing plate 44 is attached to the attachment plate 43. Specifically, as shown in FIG. 4, a reinforcing plate 44 is disposed between a pair of mounting plates 43 fixed to opposing plates 42 a (or side plates 41), and bolt holes provided in the mounting plate 43. Then, the bolt is inserted into the bolt hole provided in the reinforcing plate 44 and tightened. In addition, the high strength bolt or a normal volt | bolt can be suitably used for the volt | bolt used here according to a condition. Alternatively, instead of bolt fixing, the reinforcing plate 44 can be attached to the mounting plate 43 by bonding.

  Further, the reinforcing plate 44 is not limited to the arrangement in the horizontal (substantially horizontal) direction shown in the figure, but may be arranged in the vertical (including substantially vertical) direction as shown in FIG. Furthermore, as shown in FIG. 7, the reinforcing plate 44 may be arranged in parallel (including substantially parallel) to the axial direction of the reinforcing member 30, and the reinforcing member 30 may be connected to the reinforcing plate 44.

(Non-landing adjustment plate)
As described in the description of the column member 10, there may be a step in the flange of the composite column 10C. This is because the flange is a composite surface composed of the flat surfaces of the two component members 11, and thus the two flat surfaces are displaced. The side plate 41 is bonded to the flange of the composite column 10C. If there is a step in this flange, the surface of the component 11 that is deeper than the other will be thickened by 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, in order to eliminate this step, the unevenness adjusting plate 50 can be attached to the flat surface of the one component member 11 in advance.

  FIGS. 8A and 8B are diagrams showing a state in which the unevenness adjusting plate 50 is attached, in which FIG. 8A is a perspective view and FIG. 8B is a cross-sectional view thereof. As shown in this figure, the unevenness adjusting plate 50 fills a step generated on the composite surface of the composite pillar 10C combined with the structural member 11, and is installed on the flat surface of the structural member 11 deeper than the other. The By installing the unevenness adjusting plate 50, the flat surface of the other component member 11 and the unevenness adjusting plate 50 form an “adhesive surface” that is a substantially uniform flat surface. The adhesion of the uneven adjustment plate 50 is the same as the adhesion method, the adhesive, and the design method described in the adhesion between the side plate 41 and the composite column 10C. Since the unevenness adjusting plate 50 is for eliminating the step, as shown in FIG. 8B, the total thickness of the unevenness adjusting plate 50 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 50 is designed to be within 3 mm, and the adhesive is applied by this difference. It is preferable.

6). Attaching the Reinforcing Material The reinforcing material 30 can be connected to the side plate 41 as shown in FIGS. 4 and 6, or can be connected to the reinforcing plate 44 as shown in FIG. When the reinforcing member 30 is connected to the reinforcing plate 44, it is desirable that the reinforcing plate 44 and the pair of mounting plates 43 facing each other be arranged in parallel with the axial direction of the reinforcing member 30. Bolt holes are provided in the side plate 41 and the reinforcement plate 44 that connect the reinforcing material 30, and bolt holes are also provided at the ends of the reinforcing material 30. Both bolt holes are combined by a high-strength bolt 60. Tightened. 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 the composite column 10C and the beam material 20 is reinforced by attaching the diagonal member 31 to the composite column 10C combined with the angle steel 11a. Will be explained.
First, the existing composite pillar 10C to be reinforced will be described. The composite pillar 10C is sandwiched between two sets of angle steel 11a (component member 11) at both ends of the central plate 12 arranged in the vertical direction, and bolts 13 are connected to the two angle steel 11a and the central plate 12 respectively. Is inserted and tightened, and is installed on a pedestal plate laid on the floor surface FL. The synthetic pillar 10C may have a structure in which a flange is formed of a lattice material made of angle steel or the like, and the angle steel 11a is attached to both flanges.
Hereinafter, each step will be described.
First, in order to fill the step formed on the flange formed by the flat surfaces of the two angle steels 11a, the unevenness adjusting plate 50 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 50 and the applied thickness of the adhesive is substantially equal to the step. As a result, the other flat surface of the angle iron 11a (on which the unevenness adjusting plate 50 is not installed) and the unevenness adjusting plate 50 form an “adhesion surface” that is a substantially uniform flat surface. (Non-landing plate installation process)
An adhesive is applied to the “bonding surface”, and the side plate 41 is bonded and fixed to the synthetic column 10C. Further, the side plate 41 is bonded and fixed by applying an adhesive to the flange on the opposite side across the synthetic column 10C. (Adhesion process)
A counter plate 42a is disposed inside each column member, and a spacer is further disposed between the side plate 41 and the counter plate 42a (a gap without a flange), and tightened with a tightening bolt 42b. (Peeling prevention process)
The reinforcing plate 44 is disposed between the mounting plates 43 fixed to the side plate 41 (or the opposing plate 42a) in advance, and both ends of the reinforcing plate 44 are fixed to the mounting plate 43 with bolts. (Reinforcement plate installation process)
One end of the diagonal member 31 is connected to the reinforcing plate 44 (or the side plate 41) fixed to the composite column 10C. Similarly, the other end of the diagonal member 31 is connected to the reinforcing plate 44 (or the side plate 41) fixed to the other composite column 10C. At this time, using the bolt holes provided in both the diagonal member 31 and the reinforcing plate 44 (or the side plate 41), tightening with the high-strength bolt 60 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 10C Composite column 11 Component member 11a Angle steel (as a component member) 11c Channel steel (as a component member) 12 Center plate 13 Bolt 14 Reinforcement angle steel 20 Beam material 30 Reinforcement material 31 Diagonal material 40 Joining Part 41 Side plate 42 Peeling prevention means 42a Opposing plate 42b (for peeling prevention means) Clamping bolt 43 Mounting plate 44 Reinforcement plate 50 Uneven adjustment plate 60 High strength bolt B Beam material C Diagonal material FL Floor Gp Gusset plate P Column material

Claims (6)

In the frame structure with column material, beam material and reinforcing material,
A joint portion having two side plates, an anti-peeling body attached to each side plate, a mounting plate, and a reinforcing plate is provided in the column member or the beam member,
The two side plates are arranged so as to face each other with the pillar material or the beam material interposed therebetween, and are adhesively fixed to the pillar material or the beam material,
The peeling prevention body includes a counter plate and a fastening bolt,
The mounting plate is fixed in a vertical or substantially vertical arrangement with respect to the side plate or the opposed plate,
The side plate and the counter plate are bolted in a state of sandwiching a part of the pillar material or the beam material,
One end or both ends of the reinforcing member are connected to the side plates of the joint,
The reinforcing plate is disposed between two side plates, and both ends thereof are fixed to the mounting plate. 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 column member or the beam member provided with the joint portion is a combination of two flat surfaces of the constituent members that are parallel or substantially parallel with a step formed,
A non-land adjustment plate is attached to the flat surface of one of the two component members, and an adhesion surface is formed by the non-land adjustment plate and the flat surface of the other component member,
The frame structure according to claim 2 , wherein the side plate is bonded and fixed by an adhesive applied to the bonding surface of the column member or the beam member . 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 joint installation step of installing a joint on the column member or the beam member;
A reinforcing material connecting step of connecting one end or both ends of the reinforcing material to the joint portion, and
Further, the joint installation step includes an adhesion step of bonding two side plates to the pillar material or the beam member, a peeling prevention step, and a reinforcing plate installation step,
In the bonding step, the two side plates are arranged so as to face each other with the column material or the beam material interposed therebetween, and are bonded and fixed to the column material or the beam material,
In the peeling prevention step, the counter plate and the side plate are arranged so as to sandwich a part of the column member or the beam member, and the counter plate and the side plate are fixed with a fastening bolt,
In the reinforcing plate installation step, a reinforcing plate is disposed between the two side plates, and both ends of the reinforcing plate are attached to a mounting plate fixed vertically or substantially perpendicular to the side plate or the opposing plate. ,
In the reinforcing material connecting step, one end or both ends of the reinforcing material are connected to each side plate of the joint portion ,
A method for reinforcing a frame structure, characterized by that. 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, and an end portion of the central plate or the lattice material The frame structure reinforcing method according to claim 4, wherein the structure is fixed by a component member . The column member or the beam member provided with the joint portion is a combination of two flat surfaces of the constituent members that are parallel or substantially parallel with a step formed,
In the bonding step, a non-land adjustment plate is attached to the flat surface of one of the two component members, and an adhesion surface is formed by the non-land adjustment plate and the flat surface of the other component member, and the column 6. The method for reinforcing a frame structure according to claim 5 , wherein an adhesive is applied to the adhesion surface of the material or the beam material, and the side plate is adhered and fixed to the adhesion surface .

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