JP4171443B2 - Reinforced frame - Google Patents

Description

  The present invention relates to a reinforcing frame installed outside an existing frame.

  Conventionally, as a reinforcing frame for improving the rigidity and proof strength of a frame composed of structural members such as columns, beams, walls, etc. of an existing building (hereinafter referred to as “existing frame”), it is provided outside the existing frame. There has been known a structure constituted by a frame body to be installed and a brace material disposed in a construction surface surrounded by the frame body (for example, see Patent Document 1).

JP-A-11-193639 (FIG. 1)

  Since this conventional reinforcing frame is composed of heavy steel frames and steel members, the overall weight of the frame is very large. Will be carried by you. In other words, even if a reinforced frame is installed on an existing frame, the weight of the reinforced frame will act on the existing frame.In addition, in the event of an earthquake, an inertial force proportional to the weight will also act. Only the reinforcement effect will be reduced. In other words, in the conventional reinforcing frame composed of heavy members, the substantial reinforcing effect is reduced by the increase in weight.

  In addition, if a heavy reinforcing frame is installed on an existing frame, the support capacity of the existing foundation may be exceeded. In such a case, there is a risk of causing unequal settlement of the existing frame.

  In addition, when the weight of the reinforcing frame is large, a large crane or the like is required for the installation work, but depending on the surrounding environment of the existing building to be reinforced, the use of the large crane or the like may be restricted. In this case, the work efficiency is greatly deteriorated.

  From such a viewpoint, the present invention provides a reinforced frame installed outside an existing frame, which has a substantial substantial reinforcing effect and can perform the installation work easily and quickly. The task is to do.

  The present invention created in order to solve such problems is a reinforcing frame installed outside an existing frame, and a plurality of aluminum alloy vertical frame members arranged at intervals in the left-right direction; A plurality of aluminum alloy horizontal frame members arranged at intervals in the vertical direction and intersecting with each of the vertical frame members; and two adjacent horizontal frame members adjacent to the two vertical frame members; And a brace material made of an aluminum alloy arranged in a construction surface surrounded by the structure.

According to the reinforcing frame according to the present invention, the vertical frame member, the horizontal frame member and the brace member constituting the reinforcing frame are made of aluminum alloy which is light in weight but high in strength. Therefore, compared with the conventional reinforcing frame using a steel frame or the like. The load applied to the frame (self-weight and inertial force of the reinforcing frame) is reduced. That is, according to this reinforcement frame, the substantial reinforcement effect can be improved compared with the conventional reinforcement frame.
Further, since the reinforcing frame is lightweight, it can be easily transported and handled. As a result, the installation work can be performed easily and quickly. Furthermore, it is possible to perform the installation work using a small crane or the like with few restrictions in use.
In addition, aluminum alloys have the property of being difficult to corrode, making maintenance and management of the reinforcement frame easier, and being suitable for recycling. Even if the reinforcement frame is removed, A secondary effect of not becoming waste can also be expected.
In the present specification, “intersection” includes not only the case where two members intersect in a cross shape but also the case where they intersect in a T shape or L shape.

  In the reinforcing frame according to the present invention, each vertical frame member and each horizontal frame member is provided with a connection plate extending along the respective composition surface, and the brace member is provided with each vertical frame member. A main body portion disposed obliquely with respect to the frame member and each horizontal frame member, and connection end portions attached to both ends of the main body portion, wherein each connection end portion is an axis of the main body portion. It may be characterized by being connected to the connecting plate via a pin member orthogonal to the connecting member.

  If it does in this way, since a brace material and a connection board will be pin-joined, only an axial force will act on a brace material.

  Further, in the reinforcing frame according to the present invention, the brace material is an end plug fixed to the end portion of the main body portion, and a rotation interposed between the end plug and one of the connection end portions. A connecting bolt for connecting the member, the end plug and one of the connecting end portions, the rotating member is mounted on the connecting bolt, and the connecting bolt has a shaft thereof. It may be characterized by being engaged with the pivot member so as to be movable in a direction and pivotable together with the pivot member.

That is, since the relationship between the end plug and the connection end is the same as that for fixing the truss frame in the so-called ball joint method, the distance between the connection ends of the brace material can be set accurately. And since the reinforcement frame and the brace material receive integrally the external force transmitted to a reinforcement frame, the performance of a reinforcement frame can be improved.
In this way, the workability of the brace material is improved. That is, the brace material having such a configuration ensures that the end plug and the connection end are securely rotated by rotating the connecting bolt via the rotation member even after one connection end is connected to the connection plate. The brace material can be attached easily.

  Further, in the reinforcing frame according to the present invention, the brace material includes an end plug fixed to an end portion of the main body portion, and a coupler that couples the end plug and the one connection end portion. The coupler is formed with a first threaded portion formed on the end plug side and a second threaded portion formed on the one connection end side, and the first threaded portion The threaded portion and the second threaded portion are spiraled in opposite directions, and the end plug is formed with a third threaded portion that engages with the first threaded portion, The connection end portion may be formed with a fourth screw portion that is screwed into the second screw portion.

In this way, since one connection end and the end plug are fastened in a turnbuckle manner, it is possible to change the length of the brace material by rotating the coupler in a predetermined direction. As a result, it is possible to easily cope with dimensional errors and assembly errors of the frame.
In addition, according to this brace material, since one connection end and the end plug fixed to the main body can be fastened in a state where the direction of one connection end matches the direction of the connection plate, even if the connection Even if there is an error in the orientation of the plate, there is no influence on the work of attaching the brace material.
According to this structure, since the coupler is formed near the end of the brace material, unlike the case where the turnbuckle structure is formed in the middle of the brace material, the coupler reduces the buckling strength against the compressive force. There is nothing, and the strength of the reinforcing frame can be increased and its performance can be improved.

  Furthermore, in the reinforcing frame according to the present invention, each of the vertical frame members and each of the horizontal frame members is configured by connecting a plurality of shapes in the longitudinal direction, and a boundary portion between the shapes. May be characterized in that a length adjusting means is interposed.

According to this, even if the vertical frame material and the horizontal frame material are of the same standard, it is possible to provide seismic reinforcement for buildings having different sizes of existing frames only by changing the dimensions of the length adjusting means.
In addition, even if there is a construction error in the existing frame itself or when there is an installation error in an anchor bolt or the like provided in the existing frame to install a reinforced frame, the error can be easily absorbed. As a result, the installation work can be performed simply and quickly.

  In the reinforcing frame according to the present invention, each of the vertical frame members and each of the horizontal frame members may be an extruded shape member having a cross-sectional groove shape.

  If it does in this way, it will become possible to improve the processing precision of each member, and also it will become possible to aim at reduction in manufacturing cost.

  Further, the present invention is a reinforcing frame installed outside an existing frame, and is arranged in a frame surrounded by the frame made of an aluminum alloy corresponding to the existing frame and the frame. A brace material made of an aluminum alloy, and the frame body is configured by combining at least four frame configuration units formed by joining at least two shapes at right angles, and the adjacent frame configuration A length adjusting means may be interposed between the units.

Even in such a reinforced frame, the load applied to the existing frame compared to the conventional reinforced frame using steel frames, etc., because the frame and brace material are made of aluminum alloy that is lightweight but strong. (Self-weight and inertial force of reinforcing frame) is reduced. That is, according to this reinforcement frame, the substantial reinforcement effect can be improved compared with the conventional reinforcement frame.
Here, some frame constituent units have a cross shape, a T shape, or an L shape, for example.
In addition, since the length adjusting means is interposed between the adjacent frame constituent units, the size of the frame can be changed. Therefore, according to this reinforcing frame, since the length adjusting means is provided, it is possible to cope with existing frames of various sizes with a small number of frame constituent units.
In addition, even if there is a construction error in the existing frame itself or when there is an installation error in an anchor bolt or the like provided in the existing frame for installing a reinforced frame, the error can be easily absorbed. As a result, the installation work can be performed simply and quickly.
Furthermore, since the reinforcing frame is lightweight, it can be easily transported and handled. As a result, the installation work can be performed easily and quickly. In addition, the installation work can be performed using a small crane or the like with few restrictions in use.
In addition, aluminum alloys have the property of being difficult to corrode, making maintenance and management of the reinforcement frame easier, and being suitable for recycling. Even if the reinforcement frame is removed, A secondary effect of not becoming waste can also be expected.

  In the reinforcing frame according to the present invention, each frame component unit is provided with a connection plate extending along the surface of the frame, and an end portion of the brace material is connected to the connection plate. It may be.

  Furthermore, in the reinforcing frame according to the present invention, the frame constituent unit may be assembled in advance in a factory.

  In this way, in a factory where the assembly accuracy can be managed with high accuracy, external force is applied, and the work of joining the shape members and attaching the connecting plate, which have a heavy load, is performed. A frame can be obtained.

  According to the reinforcing frame according to the present invention, the substantial reinforcing effect can be improved, and the installation work can be easily and quickly performed.

  The best mode for carrying out the present invention will be described below in detail with reference to the accompanying drawings.

  As shown in FIG. 1, the reinforcing frame H according to the present embodiment is installed outside the existing frame K, and includes a plurality of (two in the present embodiment) arranged in the left-right direction. ), A plurality of (four in this embodiment) horizontal frame members 20, 20,... Arranged adjacent to each other in the vertical direction, and two adjacent vertical frame members 10, 10 and brace members 30, 30,... Arranged in a plane surrounded by two horizontal frame members 20, 20 adjacent to each other. In addition, the first portion of the vertical frame member 10 that protrudes along the construction surface at the intersection of the vertical frame member 10 with the horizontal frame member 20 (in this embodiment, the side surface side of the vertical frame member 10 and the lower surface side of the horizontal frame member 20). A connection plate 40A is provided, and a second connection plate 40B protruding along the construction surface is provided at the central portion of the horizontal frame member 20 (in the present embodiment, the upper surface side of the central portion).

  In the reinforced frame H according to the present embodiment, three vertical surfaces are formed by the two vertical frame members 10, 10 and the four horizontal frame members 20, 20,. For example, although not shown, five or more horizontal frame members 20 may be arranged at intervals in the vertical direction to form four or more construction surfaces. Further, the reinforcing frame may be configured by arranging three or more vertical frame members 10 at intervals in the left-right direction. For example, the reinforcing frame is composed of three vertical frame members 10 and four horizontal frame members 20. If configured, the number of constructions will be six. In this case, the central vertical frame member 10 and each horizontal frame member 20 intersect in a cross shape or a T-shape.

  Moreover, in this specification, the rectangular frame | skeleton comprised by the two vertical frame materials 10 and 10 adjacent on the right and left and the two horizontal frame materials 20 and 20 adjacent on the upper and lower sides may be called the frame W. . From this point of view, the reinforcing frame H according to the present embodiment is composed of three frames W, W, W installed corresponding to the existing frame K, and each frame W surrounded by the frame W. It can be said that it comprises a pair of left and right braces 30, 30 arranged in a V shape inside. In addition, in the frame bodies W, W adjacent to each other in the vertical direction, the lower horizontal frame member 20 of the upper frame member W is also the upper horizontal frame member 20 of the lower frame member W.

  As shown in FIG. 2, the vertical frame member 10 is arranged along the column K1 of the existing frame K, and the first frame member 11A to which the horizontal frame member 20 is joined, and the upper and lower first members. The second shape member 11B connecting the shape members 11A and 11A, and the first joint plate 12 interposed at the boundary between the first shape member 11A and the second shape member 11B. ing.

  The first shape member 11A and the second shape member 11B are made of extruded shapes made of an aluminum alloy having a cross-sectional groove shape. As shown in FIG. 3, ribs 11a, 11a, … Is attached. Moreover, bolt insertion holes 11c, 11c are drilled in both end portions of the both shape members 11A, 11B, and anchor insertion holes 11b, 11b,... Are drilled in other regions. Here, anchor bolts B1, B1,... (See FIG. 8) embedded in the existing frame K are inserted into the anchor insertion holes 11b, 11b,..., And the joint plate 12 is joined to the bolt insertion holes 11c, 11c. Bolts (not shown) for insertion are inserted. The cross-sectional shapes of the first shape member 11A and the second shape member 11B are not limited to the groove shape, and may be an H shape.

  The first joint plate 12 is made of a plate material having a rectangular shape in plan view, and bolt insertion holes 12c corresponding to the bolt insertion holes 11c of the first shape member 11A and the second shape member 11B are formed at four positions. Has been. The bolt insertion hole 12c is a loose hole (including a long hole), and can cope with a change in the separation distance between the end surface of the first shape member 11A and the end surface of the second shape member 11B. That is, in the present embodiment, the first joint plate 12 functions as a length adjusting unit that adjusts the length of the vertical frame member 10.

  As shown in FIG. 2, the horizontal frame member 20 is arranged along the beam K <b> 2 of the existing frame K and intersects with each vertical frame member 10, and is joined to the left vertical frame member 10. A short third shape member 21A, a long fourth shape member 21B joined to the vertical frame member 10 at the right end, and a boundary portion between the third shape member 21A and the fourth shape member 21B. And a second joint plate 22 to be configured.

  The third shape member 21A and the fourth shape member 21B are made of an extruded shape made of an aluminum alloy having a cross-sectional groove shape. As shown in FIG. 3, ribs 21a and 21a are provided at appropriate positions in the groove. , ... are attached. Further, the third shape member 21A has bolt insertion holes 21c and 21c formed at the end on the fourth shape member 21B side, and an anchor insertion hole near the joint with the first shape member 11A. 21b, 21b,... Are further drilled, and further, dowel insertion holes 21d, 21d are drilled in regions between the anchor insertion holes 21b, 21b,... And the bolt insertion holes 21c, 21c. Similarly, the fourth shape member 21B has bolt insertion holes 21c and 21c formed at the end on the third shape member 21A side, and although not shown, the first shape member 11A (FIG. 2). Anchor insertion holes are formed in the vicinity of the joint portion with the reference), and further, dowel insertion holes 21d, 21d,... Are formed in regions between the anchor insertion holes and the bolt insertion holes 21c, 21c. . Here, anchor bolts B2, B2,... (See FIG. 8) embedded in the existing frame K are inserted into the anchor insertion holes 21b, 21b,..., And the second joint plate 22 is joined to the bolt insertion holes 21c. Bolts (not shown) are inserted, and the base end portions of the stud dowels 21e, 21e,... (See FIG. 11B) projecting to the back side are fixed to the dowel insertion holes 21d, 21d,. . The cross-sectional shapes of the third shape member 21A and the fourth shape member 21B are not limited to the groove shape, and may be an H shape.

  The second joint plate 22 is made of a plate material having a rectangular shape in plan view, and bolt insertion holes 22c corresponding to the bolt insertion holes 21c of the third shape member 21A and the fourth shape member 21B are formed at four positions. Has been. The bolt insertion hole 22c is a loose hole (including a long hole), and can cope with a change in the separation distance between the end surface of the third shape member 21A and the end surface of the fourth shape member 21B. That is, in the present embodiment, the second joint plate 22 functions as a length adjusting unit that adjusts the length of the horizontal frame member 20. This also improves workability.

  As shown in FIG. 2, the brace material 30 includes a main body portion 31 disposed obliquely with respect to the vertical frame material 10 and the horizontal frame material 20, and connection end portions 32 and 32 attached to both ends of the main body portion 31. And is configured. Note that, on one side of the brace material 30 (the lower end side in FIG. 2), an end plug 33 and a rotating member 34 are interposed between the end of the main body 31 and the connection end 32, and As shown in FIG. 4, a connecting bolt 35 for connecting the end plug 33 and one connecting end 32 is built in the end plug 33. Note that the end plug 33 is friction-welded to the end surface of the main body 31 in a state where the connecting bolt 35 is built therein. Further, the connection end portion 32 on the other side (the upper end side in FIG. 2) of the brace material 30 is also fixed to the end surface of the main body portion 31 by friction welding.

  The main body 31 is made of an aluminum alloy circular tube. Each connection end 32 is a cast product (or a forged product or a cut product) made of an aluminum alloy, and includes a disc-shaped base portion 32a and a pair of sandwiching plates 32b and 32b protruding from the base portion 32a. I have. Bolt holes 32c into which the tips of the connecting bolts 35 are screwed are formed in the base portion 32a, and pin insertion holes 32d are formed in the approximate center of each clamping plate 32b. A pin member 37 orthogonal to the axis of the main body 31 is inserted through the pin insertion hole 32d. The sandwiching plates 32b and 32b have the same separation distance as the thickness of the first connecting plate 40A (see FIG. 2) or the second connecting plate 40B, and are sandwiched between the sandwiching plates 32b and 32b. The first connection plate 40A (see FIG. 2) or the second connection plate 40B can be inserted. In this way, each connection end 32 is pin-bonded to the first connection plate 40A (see FIG. 2) or the second connection plate 40B, and as a result, only the axial force is applied to the brace material 30. Will work.

  The end plug 33 includes a base 33a that is fixed to the end surface of the main body 31 by friction welding and a short columnar protrusion 33b that protrudes toward the connection end 32 of the base 33a. The base 33a is formed with a recess for accommodating the head portion 35a of the connection bolt 35, and the shaft 35b of the connection bolt 35 is inserted into the center of the recess and the short columnar projection 33b. A hole 33c is formed. The outer diameter of the base 33a is the same as the outer diameter of the main body 31, and the outer diameter of the short columnar protrusion 33b is smaller than the outer diameter of the base 33a.

  The rotating member 34 rotates the connecting bolt 35 and is mounted on the shaft portion 35 b of the connecting bolt 35. A recess 34a into which the short columnar protrusion 33b of the end plug 33 is fitted is formed on the end plug 33 side of the rotating member 34, and the shaft portion 35b of the connecting bolt 35 is inserted into the center of the recess 34a. An insertion hole 34b is formed, and a pair of guide grooves 34c and 34c are formed along the insertion hole 34b. As shown in FIGS. 5A and 5B, the rotating member 34 always has the end surface on the side of the connecting end portion 32 on the connecting end portion 32 regardless of the position of the connecting bolt 35. The end surface of the end plug 33 is in contact with the end surface of the end plug 33 and the end surface of the end plug 33 on the side of the rotating member 34. That is, the rotating member 34 can reliably transmit the compressive force acting on the connection end portion 32 to the main body portion 31.

  The connecting bolt 35 connects the end plug 33 and one connecting end 32, and is inserted into the insertion hole 33 c of the end plug 33 and the insertion hole 34 b (see FIG. 4) of the rotating member 34 on the side of the main body 31. Is inserted into the bolt hole 32c of the connection end 32. In addition, a fitting hole 35c (see FIG. 4) is formed in the shaft portion 35b of the connecting bolt 35 in a direction orthogonal to the axis line, and a locking pin 36 is inserted into the fitting hole 35c.

  As shown in FIG. 5C, both ends of the locking pin 36 protrude from the fitting holes 35 c formed in the shaft portion 35 b of the connecting bolt 35 and engage with the guide grooves 34 c and 34 c of the rotating member 34. To do. That is, the connecting bolt 35 rotates together with the rotation member 34 because both ends of the locking pin 36 engage with the guide grooves 34c, 34c of the rotation member 34, and the guide grooves 34c, 34c extend along the insertion hole 34b. Therefore, it moves in the axial direction. The locking pin 36 is inserted into the fitting hole 35c (see FIG. 4) after the shaft portion 35b of the connecting bolt 35 is inserted into the insertion hole 33c of the end plug 33.

  As shown in FIG. 3, the first connecting plate 40 </ b> A includes a side surface of the first shape member 11 </ b> A constituting the vertical frame member 10 and a third shape member 21 </ b> A constituting the horizontal frame member 20 (or the fourth shape). It is fixed to the lower surface of the material 21B) by welding. Further, the first connecting plate 40A has a pin insertion hole 41A through which the pin member 37 (see FIG. 4) is inserted in a direction perpendicular to the construction surface.

  The second connection plate 40B is fixed to the upper surface of the fourth shape member 21B constituting the horizontal frame member 20 by welding. In addition, a pair of pin insertion holes 41B and 41B through which the pin member 37 (see FIG. 4) is inserted are formed in the second connection plate 40B in a direction perpendicular to the construction surface.

Next, a method for assembling the reinforcing frame H configured as described above will be described.
First, as shown in FIG. 6, in a factory or the like, a first frame configuration unit U1 (see FIG. 6B) and a second frame configuration unit U2 (see FIG. 6B) for configuring the reinforcing frame H (see FIG. 2). A predetermined number of FIG. 6 (d) are manufactured.

  Here, as shown in FIGS. 6A and 6B, the first frame constituting unit U1 has a horizontal frame member on the side surface of the first shape member 11A constituting the vertical frame member 10 (see FIG. 2). 20 (see FIG. 2) is joined at a right angle, and the side edges of the first connecting plate 40A and the side surfaces of the first profile 11A and the lower surface of the third profile 21A The upper edge is joined (by welding in this example). It should be noted that ribs 11a and 21a are joined at appropriate positions of the first profile member 11A and the third profile member 21A, and a stud diver 21e (rear projecting rearwardly) is inserted into the dowel insertion hole 21d of the third profile member 21A. FIG. 11B is fixed. The first frame constituent unit U1 shown in FIGS. 6A and 6B has a T shape, but the first frame constituent unit U1 ′ (FIG. 1) located at the upper and lower ends of the reinforcing frame H. Reference) is L-shaped.

  Further, as shown in FIGS. 6C and 6D, the second frame constituting unit U2 has a horizontal frame member 20 on the side surface of the first profile member 11A constituting the vertical frame member 10 (see FIG. 2). The fourth profile member 21B constituting (see FIG. 2) is joined at a right angle, and the side edge of the first connection plate 40A and the upper side are attached to the side surface of the first profile member 11A and the lower surface of the fourth profile member 21B. The edge is joined (by welding in this example), and the lower edge of the second connecting plate 40B is joined (by welding in this example) to the upper surface of the fourth shape member 21B. It should be noted that ribs 11a and 21a are joined to appropriate positions of the first profile member 11A and the fourth profile member 21A, and the stud diver 21e (projecting backward) is inserted into the dowel insertion hole 21d of the fourth profile member 21B. FIG. 11B is fixed. The second frame constituent unit U2 shown in FIGS. 6C and 6D has a T shape, but the second frame constituent unit U2 ′ (FIG. 1) positioned at the upper and lower ends of the reinforcing frame H. Reference) is L-shaped.

  Then, preferably on a flat ground near the construction site, a predetermined number of first frame constituent units U1 (U1 ′), the same number of second frame constituent units U2 (U2 ′), and a predetermined number of second frame constituent units U1 (U2 ′). A ladder-shaped frame (three frames W) is constructed by combining with the shape member 11B, and the two brace members 30, 30 are formed in a V shape on the surface surrounded by each frame W. Deploy.

  Here, the assembly method of the reinforcing frame H will be described in more detail by paying attention to the frame W located at the center among the three frames W (see FIG. 1) constituting the reinforcing frame H.

  As shown in FIG. 7, first, a pair of upper and lower first frame constituent units U1, U1 and a pair of upper and lower second frame constituent units U2, U2 are arranged in a rectangular shape in plan view, and the first frame configuration The second shape member 11B is disposed between the units U1 and U1 and between the second frame constituent units U2 and U2.

  Next, the first profile member 11A and the second profile member 11B of the first frame component unit U1 (or the second frame component unit U2) are interposed via the first joint plate 12 serving as length adjusting means. And the third profile member 21A of the first frame component unit U1 and the fourth profile member 21B of the second frame component unit U2 via the second joint plate 22 serving as a length adjusting means. Link. In order to connect the first shape member 11A and the second shape member 11B using the first joint plate 12, the positions of the bolt insertion holes 11c (see FIG. 3) of the two shape members 11A and 11B and the first shape plate 11B are used. After matching the position of each bolt insertion hole 12c (see FIG. 3) of one joint plate 12, a bolt (not shown) is inserted into the bolt insertion holes 11c and 12c, and a nut is screwed into the shaft portion. Good. Similarly, in order to connect the third shape member 21A and the fourth shape member 21B using the second joint plate 22, the bolt insertion holes 21c (see FIG. 3) of both the shape members 21A and 21B are used. After adjusting the position and the position of each bolt insertion hole 22c (see FIG. 3) of the second joint plate 22, a bolt (not shown) is inserted into the bolt insertion holes 21c and 22c, and a nut is screwed into the shaft portion. You just need to match.

  In addition, in order to adjust the dimension (namely, the length of the vertical frame material 10, and the length of the horizontal frame material 20) of the frame W, bolt insertion hole 12c, 22c of each joint plate 12, 22 (refer FIG. 3). What is necessary is just to adjust the space | interval of shape members within the range of the hole diameter.

  When the dimensional adjustment of the frame W is completed, the connection end 32 on the lower end side removed from the brace material 30 is inserted into the second connection plate 40B, and the pin insertion hole 32d of the connection end 32 is connected to the second connection plate 32B. After aligning the position of the pin insertion hole 41B of the plate 40B, the pin member 37 (see FIG. 4) is inserted into both the pin insertion holes 32d and 41B, and the connection end 32 on the lower end side is connected to the second connection plate 40B. Connecting. Subsequently, the upper end side integrated with the main body 31 while the tip of the connecting bolt 35 protruding from the rotating member 34 is positioned at the opening of the bolt hole 32c (see FIG. 4) of the connection end 32 on the lower end side. Are inserted into the first connection plate 40A, the pin insertion holes 32d of the connection end portion 32 and the pin insertion holes 41A of the first connection plate 40A are aligned, and both pin insertion holes 32d, The pin member 37 (see FIG. 4) is inserted into 41B and the other connection end 32 is connected to the first connection plate 40A. When the rotating member 34 is rotated in a predetermined direction, the connecting bolt 35 is also rotated. As a result, as shown in FIG. 5B, the shaft portion 35b is a bolt hole of the connecting end portion 32 on the lower end side. 32c.

Next, a method for installing the reinforcing frame H on the existing frame K will be described.
First, as shown in FIG. 8A, anchor bolts B1, B1,... Are driven into the column K1 of the existing frame K, anchor bolts B2, B2,. , Stud gibbles J, J,... Then, as shown in FIG.8 (b), the reinforcing bar T is installed in the front surface of the beam K2. .. And the stud dowels 21e, 21e,... Fixed in advance in the dowel insertion holes 21d, 21d,. In addition, although each stud dowel 21e is previously fixed to the dowel insertion hole 21d of the horizontal frame member 20 (the third shape member 21A and the fourth shape member 21B), in FIG. The illustration of the horizontal frame member 20 is omitted.

  Subsequently, the reinforcing frame H (see FIG. 1) assembled on the flat ground in the vicinity of the construction site is collectively lifted by a crane and installed on the front surfaces of the columns K1 and K2, as shown in FIG. That is, as shown in FIG. 10, the anchor bolts B1, B1,... Are inserted into the anchor insertion holes 11b, 11b,. , The anchor bolts B2, B2,... Are inserted into the anchor insertion holes 21b, 21b,... Of the horizontal frame member 20, and their heads are fastened with nuts N2.

  Then, as shown in FIG. 10, after installing a mold frame (not shown) between the pillar K1 and the vertical frame material 10, concrete C1 is placed in the space surrounded by the mold frame. As shown in 11 (a) and 11 (b), after placing a mold (not shown) between the beam K2 and the horizontal frame member 20, the concrete C2 is placed in a space surrounded by the mold. Then, the installation of the reinforcing frame H to the existing frame K is completed.

  In the present embodiment, as an installation method of the reinforcing frame H to the existing frame K, a method of assembling the reinforcing frame H on a flat ground and then using a crane to install the reinforcing frame H on the front surface of the existing frame K is illustrated as appropriate. There is no problem. For example, each vertical frame member 10 and each horizontal frame member 20 (or first frame component units U1, U1 ′ and second frame component units U2, U2 ′) are sequentially installed on the front surface of the existing frame K to form a ladder. After the frame is constructed, the brace materials 30 and 30 may be attached to each construction surface.

  According to the reinforcing frame H according to the present embodiment described above, the vertical frame member 10, the horizontal frame member 20, and the brace member 30 constituting the aluminum frame are lightweight and have a predetermined strength and can be welded (for example, Since it is made of JIS A6063T6, A5083, A7003, etc., preferably A5083, A7003), the load applied to the existing frame K compared to the conventional reinforced frame using steel frames etc. (self-weight and inertial force of the reinforced frame H) Becomes smaller. That is, according to this reinforcement frame H, the substantial reinforcement effect can be improved compared with the conventional reinforcement frame.

  Further, since the reinforcing frame H is lightweight, it can be easily transported and handled. As a result, the installation work can be performed easily and quickly. Furthermore, it is possible to perform the installation work using a small crane or the like with few restrictions in use.

  In addition, the aluminum alloy has the property that it is difficult to corrode, so the maintenance and management of the reinforcing frame H becomes easy, and it is also suitable for recycling. Can also be expected to have a secondary effect of not becoming industrial waste.

  In addition, since the vertical frame member 10 and the horizontal frame member 20 are formed by using the extruded shape member having a cross-sectional groove shape, the processing accuracy is high and the manufacturing cost is low.

  Further, as shown in FIG. 2, the reinforcing frame H is connected to the first frame member 11A and the second frame member 11B constituting the vertical frame member 10 via a joint plate 12 having a length adjusting function. In addition, since the third shape member 21A and the fourth shape member 21B constituting the horizontal frame member 20 are connected via the joint plate 22 having a length adjusting function, the dimensions thereof are changed. be able to. That is, according to this reinforcing frame H, even when there is a construction error in the existing frame K itself, or when there is an installation error in the anchor bolts B1, B2 (see FIG. 8) provided in the existing frame K, Since the error can be easily absorbed, the installation work can be performed simply and quickly.

  Further, regarding the brace material 30, even after the connection end portions 32 and 32 are connected to the connection plates 40 </ b> A and 40 </ b> B, the connection bolt 32 is rotated via the rotation member 34 to connect the connection end portion 32. Since the end plug 33 and the end plug 33 can be fastened, the connection plates 40A and 40B can be securely fastened by the brace material. Further, since the relationship between the end plug 33 and the connecting end 32 is the same as that for fixing the truss frame by the so-called ball joint method, the distance between the connecting ends 32, 32 of the brace material 30 is accurately set. Since the reinforcing frame H and the brace material 30 are integrally received by the external force transmitted to the reinforcing frame H, the performance of the reinforcing frame H can be improved.

  In addition, in this embodiment, although the case where the two brace materials 30 and 30 were arrange | positioned with respect to one composition surface in V shape was illustrated, the number of the brace materials 30 arrange | positioned on one composition surface is For example, one brace material 30 may be arranged on one construction surface, or three or more brace materials 30 may be arranged in a zigzag shape. In addition, the brace members 30 and 30 may be arranged in an inverted V shape or may be arranged in a horizontal V shape. That is, it is only necessary to select a mechanically appropriate arrangement and an appropriate appearance design.

(Modification of brace material)
The configuration of the brace material arranged in the construction surface is not limited to the above-described one, and for example, a configuration like the brace material 50 shown in FIG. 12 may be used.

  The brace material 50 includes an aluminum alloy main body 51 disposed obliquely with respect to the vertical frame member 10 and the horizontal frame member 20 (see FIG. 1), and connection end portions 52 attached to both ends of the main body portion 51. , 52 (only one of them is shown in FIG. 12). Further, on one side of the brace material 50 (on the lower end side in FIG. 12), an end plug 53 and a coupler 54 are interposed between the end of the main body 51 and the connection end 52. The other connection end 32 (not shown in FIG. 12) of the brace material 50 is fixed to the end surface of the main body 51 by friction welding.

  The coupler 54 is made of a cylindrical member made of an aluminum alloy. A first screw portion 54a is formed on the end plug 53 side inside the coupler 54, and a second screw portion 54b is formed on the connection end portion 52 side. Yes. Here, the first screw portion 54a and the second screw portion 54b are spiraled in directions opposite to each other.

  As shown in FIG. 13A, the end plug 53 includes a base 53a that is fixed to the end surface of the main body 51 by friction welding, and a third screw portion protruding from the connection end 52 side of the base 53a. 53b and a short columnar protrusion 53c that protrudes toward the connection end 52 of the third screw portion 53b. The third screw portion 53 b is screwed into the first screw portion 54 a of the coupler 54. Further, the outer diameter of the base portion 53a is the same as the outer diameter of the main body portion 51, the outer diameter of the third screw portion 53b is smaller than the outer diameter of the base portion 53a, and the outer diameter of the second protrusion 53c is third. Is smaller than the outer diameter of the screw portion 53b.

  The connection end 52 is a cast product (or a forged product or a cut product) made of an aluminum alloy, and includes a disk-like base portion 52a and a pair of sandwiching plates 52b and 52b protruding from the base portion 52a. . A fourth screw portion 52e that projects into the second screw portion 54b of the coupler 54 protrudes from the base portion 52a. The fourth screw portion 52e has a recess 52f into which the short columnar protrusion 53c of the end plug 53 is inserted. Each sandwiching plate 52b is provided with a pin insertion hole 52d. A pin member 57 (see FIG. 12) perpendicular to the axis of the main body 31 is inserted through the pin insertion hole 52d. The sandwiching plates 52b and 52b have the same separation distance as the thickness of the first connection plate 40A (see FIG. 2) or the second connection plate 40B, and the sandwiching plates 52b and 52b are sandwiched between the sandwiching plates 52b and 52b. The first connection plate 40A (see FIG. 2) or the second connection plate 40B can be inserted. In this way, the connection end 52 is pin-bonded to the first connection plate 40A (see FIG. 2) or the second connection plate 40B, and as a result, only the axial force acts on the brace material 50. Will do.

  When this brace material 50 is used, since the length of the brace material 50 can be adjusted, the length dimensions of the vertical frame material 10 and the horizontal frame material 20 can be adjusted at the construction site. Become. That is, it is possible to cope with a case where the bolt holes of the joint plate 12 or the joint plate 22 are long holes and the lengths of the vertical frame member 10 and the horizontal frame member 20 are adjusted at the construction site.

  Next, a method for attaching the brace material 50 to the connection plates 40A and 40B will be described. The brace material 50 is performed after the dimensional adjustment of the vertical frame material 10 and the horizontal frame material 20 (see FIG. 2) is completed.

  First, the connection end 52 (not shown in FIGS. 12 and 13) attached to the upper end side of the brace member 50 is connected to the first connection plate 40A (see FIG. 2). Subsequently, the connection end 52 attached to the lower end side of the brace member 50 is inserted into the second connection plate 40B (see FIG. 2), and then the coupler 54 is rotated as shown in FIG. 13 (b). The connection end 52 is pulled toward the end plug 53 side, and the positions of the pin insertion holes 52d of the connection end 52 and the pin insertion holes 41B (see FIG. 7) of the second connection plate 40B are aligned. Then, the pin member 57 (see FIG. 12) is inserted into both the pin insertion holes 52d and 41B, and the connection end portion 52 on the lower end side is connected to the second connection plate 40B.

  According to the brace material 50 having such a configuration, the connection end portion 52 on the lower end side and the end plug 53 are fastened in a turnbuckle manner, so that the brace material 50 is rotated by rotating the coupler 54 in a predetermined direction. As a result, it is possible to easily cope with dimensional errors and assembly errors of the frame W (see FIG. 2).

  Further, the brace member 50 has an end fixed to the connection end 52 and the main body 51 even if the distance between the pin insertion holes 41A and 41B of the first connection plate 40A or the second connection plate 40B changes. Since the plug 53 can be fastened, even if the interval between the first connection plate 40A or the second connection plate 40B must be adjusted, there is no influence on the work of attaching the brace material 50, Further, since the coupler 54 is disposed in the vicinity of the end portion of the brace material 50, it has little influence on the buckling strength and can receive the axial stress as the brace material 50.

It is a perspective view which shows the use condition of the reinforcement frame which concerns on this invention. It is the elements on larger scale of FIG. It is an enlarged front view for demonstrating the profile which comprises a vertical frame material and a horizontal frame material. It is a disassembled perspective view of a brace material. (A) is sectional drawing of the edge part of a brace material, Comprising: The figure which shows a state before screwing a connection bolt in the bolt hole of a connection end part, (b) is a bolt hole of a connection end part similarly The figure which shows the state after screwing together, (c) is VV sectional drawing of (b), Comprising: It is a figure which shows the engagement state of a rotation member and a connection bolt. (A) is an exploded view showing members constituting the first frame constituting unit, (b) is a front view showing the first frame constituting unit, and (c) shows members constituting the second frame constituting unit. Exploded view, (d) is a front view showing a second frame constituting unit. It is an exploded front view for demonstrating the assembly method of a reinforcement frame (frame body). (A) is a perspective view which shows the state which embedded the anchor bolt etc. in the existing frame, (b) is a perspective view which shows the state which attached the reinforcing bar rod. It is an enlarged front view which shows the state which installed the reinforcement frame in the existing frame. It is XX sectional drawing of FIG. (A) is YY sectional drawing of FIG. 9, (b) is ZZ sectional drawing of FIG. It is a disassembled perspective view which shows the other form of brace material. It is sectional drawing of the edge part of the brace material shown in FIG. 12, Comprising: (a) is a figure which shows the state before fastening, (b) is a figure which shows the state after fastening.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vertical frame material 11A 1st profile 11B 2nd profile 12 1st joint plate (length adjustment means)
20 Horizontal frame material 21A Third shape material 21B Fourth shape material 22 Second joint plate (length adjusting means)
DESCRIPTION OF SYMBOLS 30 Brace material 31 Main body part 32 Connection end part 33 End plug 34 Rotating member 35 Connecting bolt 36 Locking pin 37 Pin member 40A First connection plate 40B Second connection plate 50 Brace material 51 Main body part 52 Connection end part 53 End plug 54 Coupler H Reinforced frame W Frame body U1 First frame component unit U2 Second frame component unit K Existing frame

Claims (8)

A reinforced frame installed outside the existing frame,
A plurality of aluminum alloy vertical frame members arranged at intervals in the left-right direction;
A plurality of aluminum alloy horizontal frame members arranged at intervals in the vertical direction and intersecting each of the vertical frame members;
A brace material made of an aluminum alloy arranged in a construction surface surrounded by two adjacent vertical frame members and two adjacent horizontal frame members ;
Each of the vertical frame members and the horizontal frame members are configured by connecting a plurality of shapes in the longitudinal direction,
A reinforcing frame characterized in that a length adjusting means is interposed at a boundary portion between the shape members . Each vertical frame member and each horizontal frame member is provided with a connecting plate extending along each of the composition surfaces,
The brace material includes a main body portion disposed obliquely with respect to the vertical frame members and the horizontal frame members, and connection end portions attached to both ends of the main body portion,
2. The reinforcing frame according to claim 1, wherein each connection end is connected to the connection plate via a pin member orthogonal to the axis of the main body. The brace material includes an end plug fixed to an end portion of the main body portion, a rotating member interposed between the end plug and one of the connection end portions, and the end plug and the one connection of the end plug. A connecting bolt for connecting the end portion,
The rotating member is mounted on the connecting bolt,
The reinforcing frame according to claim 2, wherein the connecting bolt is engaged with the rotating member so as to be movable in the axial direction thereof and to be rotatable together with the rotating member. The brace material has an end plug fixed to the end of the main body, and a coupler that connects the end plug and the one connection end.
The coupler is formed with a first threaded portion formed on the end plug side and a second threaded portion formed on the one connection end side,
The first screw portion and the second screw portion are spiraled in opposite directions,
The end plug is formed with a third screw portion that is screwed into the first screw portion,
The reinforcing frame according to claim 2, wherein a fourth screw portion that is screwed into the second screw portion is formed at the one connection end portion. The reinforcing frame according to any one of claims 1 to 4 , wherein each of the vertical frame members and the horizontal frame members are formed of an extruded shape member having a groove shape in cross section. A reinforced frame installed outside the existing frame,
A frame made of an aluminum alloy installed corresponding to an existing frame;
A brace material made of aluminum alloy arranged in a construction surface surrounded by the frame body,
The frame body is configured by combining at least four frame constituent units formed by joining at least two shapes at right angles.
A reinforcing frame comprising length adjusting means interposed between the adjacent frame constituting units. Each frame component unit is provided with a connection plate extending along the surface of the composition,
The reinforcing frame according to claim 6 , wherein an end portion of the brace material is connected to the connection plate. The reinforcing frame according to claim 6 or 7 , wherein the frame component unit is assembled in advance in a factory.

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