JP3162650U - Crossing structure of string member and its structural frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intersecting portion structure of a stringed member and a structure frame thereof which can easily set an axis of a stringed string material including a lattice material at an intersecting portion even when a small number of plate materials are adopted, and are easy to manufacture. SOLUTION: In a stringed member crossing structure formed by cross-connecting a large number of string members 21 among string materials arranged at intervals in the vertical direction, a string stretched in one direction is formed. The string member 21 includes a through plate 40a, a hollow member 103 that is cross-joined to the through plate 40a, and a screw member 104 that is inserted and fixed in the hollow member 103. At least one of the screw members 104 Since the string member 22 stretched in the other direction at the end is screwed and fixed and connected, even if a small number of plates are used, the string members (including the lattice material) can be decentered at the intersection. It is easy to set the shaft axis and adjust the distance between the crossing parts, and the crossing part structure of the string member that is easy to manufacture can be obtained, and the transmission of stress becomes clear. [Selection] Figure 4

Description

  The present invention is used for a roof frame of a large spanning building such as a gymnasium, and in a string member arranged at intervals in the vertical direction, at least a lower string member constituting a string string is cross-connected with a number of string members. The present invention relates to a crossing structure of tension string members and a structural frame thereof.

2. Description of the Related Art Conventionally, an upper chord member 11 crossed in the X and Y directions as shown in FIG. 2 and a lower chord crossed in the X and Y directions as shown in FIG. A structural frame 2 composed of tension members such as tension rods as tension members such as tension rods 32 and 31 that connect the members 22 and 21 and the upper and lower string members 11, 21 and 22 obliquely, respectively. It was sometimes adopted. As a crossing structure of string members, conventionally, a string member 21 from two directions as shown in FIG. 13 is provided at the lower end of the bundle 40 extending downward from the intersection of the upper chord members 11, 11. , 22 are connected by crossing through plates 200, 200 or the like, but when a steel pipe or the like is used for the bundle 40 as in the illustrated example, the cross plate is assembled in a cross shape. In order to install 200 and 200, it is necessary to provide a steel pipe with a slit or the like and insert it, which is troublesome to manufacture. In addition, the lower chord members 21 and 22 in which the lattice members 31 and 32 are string members, the through plates 200 and 200, Since it is necessary to be in the same plane, the relationship between the through plate 200 to be applied and the lower chord members 21 and 22 and the lattice members 31 and 32 which are the string members is restricted.

  Therefore, a truss-like frame structure as described in Patent Document 1 below has been proposed. In this truss-like frame structure disclosed in Patent Document 1, a cylindrical body having a plurality of groove-like fitting portions called columnar hubs is used as a joint portion between members, and an end portion of a steel pipe member is fitted into the groove-like fitting. It is configured to be a shape that can be fitted to the part, or to form a three-dimensional frame by bolting members through a plate material called a bracket processed into a shape that can be fitted to the groove-like fitting part. The invention mainly assumes aluminum materials that are easy to extrude, and in steel, the shape of the groove-shaped fitting portion of the hub and the processing of the end of the member adapted to the groove-shaped fitting portion are highly difficult to manufacture. It was not suitable for steel frames. In addition, since the mechanical engagement of the groove-like fitting portion resists the tensile force, there is a limit in securing a large load resistance.

  In addition, as for the crossing portion of the lower chord member which is a string member, for example, a structure of the crossing portion of the cable of the stringed beam as described in Patent Document 2 has been proposed. The structure of the crossing portion of the cable disclosed in Patent Document 2 is provided by providing a columnar crossing block that allows two cables that are substantially orthogonal to be inserted at the lower end portion of the bundle member at the cable crossing portion of the lower chord. The structure of the cable crossing is lighter in appearance than the conventional one, and the number of parts and the number of work steps can be reduced. However, this device is intended only for the intersection of two cables that are substantially orthogonal, and does not assume that a lattice material is connected to the intersection. In addition, since the axes of the two intersecting cables are eccentric in the vertical direction, even if a lattice material is interposed, the structure is not suitable for transmitting force between these two cables. It was.

  Furthermore, the present applicant has also proposed a prestress introducing device for a large span frame as described in Patent Document 3 below as a crossing structure of lower chord members that are tension strings. The pre-stress introduction device in the large span frame disclosed in Patent Document 3 is constructed by inserting a span direction cable into a ball joint at the lower end of a three-dimensional truss of an inverted quadrangular pyramid projecting downward from a roof frame, and assembling the entire roof frame. Then, tension is introduced into the cable. In the present invention, a connecting member such as a steel pipe that is not a cable is connected in the direction of the ball joint at the lower end of the three-dimensional truss of the inverted quadrangular pyramid. It was not applicable.

Japanese Patent Laid-Open No. 11-236732 (see abstract) Japanese Utility Model Publication No. 6-71647 (see abstract) JP-A-3-59244 (refer to the claims)

  Therefore, as described in the above-mentioned patent documents, the problems of the crossing structure of the string members constituting the string beam used for the roof frame of the building between the two rooms such as the gymnasium and the structure frame are few, Even with the use of plate material, it is easy to set the shaft core that does not cause eccentricity between the string members including the lattice material at the intersection, and the structure of the structure of the string member that is easy to manufacture The purpose is to provide.

For this reason, the present invention is stretched in one direction in an intersecting structure of string members formed by cross-connecting many string members among lower string materials arranged at intervals in the vertical direction. It comprises a through plate that connects the string members, a hollow material that is cross-joined to the through plate, and a screw member that is inserted into and fixed to the hollow material, and at least one end of the screw member in a different direction. The stretched string member is connected by being screwed and fixed. The present invention is characterized in that one end of a lattice material is connected to a gusset plate joined to both members of the through plate and the hollow material. Further, the present invention is characterized in that a plurality of gusset plates for connecting one end portions of the lattice material are provided at a predetermined angle with respect to the axis of the hollow material that is cross-joined to the through plate. And In the present invention, one end of a lattice material is connected to a gusset plate inserted and joined to a corner formed by the through plate and a rib plate joined to a hollow material cross-joined to the through plate. It is characterized by that. Moreover, this invention makes the structural frame by which the cross | intersection part structure of the string member described in any one of the above-mentioned is used as a constituent requirement. Further, the present invention is constituted by two joining plates in which the joining portions of the intersecting chord members in the upper chord material are substantially orthogonal to each other, and the gusset is inserted and joined to a corner portion formed between these joining plates. The structural frame adopting the crossing structure of the string member described in any one of the above, characterized in that the other end of the lattice material is connected to a plate. Means for this.

  According to the present invention, the crossing portion of the string member which is a constituent element of claim 1 and which is formed by cross-connecting many string members to the lower string material among the string materials arranged at intervals in the vertical direction The structure includes a through plate that connects the string members that are stretched in one direction, a hollow material that is cross-joined to the through plate, and a screw member that is inserted and fixed in the hollow material. Since the string member stretched in the other direction is screwed, fixed and connected to at least one end, even if a small number of plate members are used, the string members (including the lattice material) between the string members It is easy to set the shaft core without eccentricity and to adjust the distance between the intersecting portions, and to obtain the intersecting portion structure of the string member that is easy to manufacture, and to realize a stringed structure that can transmit stress clearly.

  Further, when one end portion of the lattice material is connected to the gusset plate joined to both members of the through plate and the hollow material, which is a constituent element of claim 2, the through plate can be used only in one direction. In addition, by using a hollow material in the crossing direction, which is another direction, it is possible to minimize the conspicuousness of the plate material and it is excellent in design, and the gusset plate is joined to both the through plate and the hollow material Then, the lattice material can be connected to the structurally strong gusset plate, and the overall strength of the intersection is improved. Further, the gusset plate that connects the one end of the lattice material, which is a constituent element of claim 3, is a plurality of sheets at a predetermined angle with respect to each other about the axis of the hollow material that is cross-joined to the through plate. When provided, a hollow material is used for joining the string members in a predetermined direction, and positioning of the gusset plate that connects one end portion of the lattice material from any direction is performed by positioning one side of these gusset plates on the hollow material. By simply rotating a predetermined angle around the axis of rotation, it is possible to easily adjust their orientations appropriately.

  Furthermore, the lattice of the gusset plate inserted and joined to the corner formed by the through plate and the rib plate joined to the hollow material cross-joined to the through plate, which is a constituent element of claim 4 When one end of the material is connected, it can be easily applied to the case where the lattice material is connected between the upper and lower chords so as to be inclined in any direction of XY. Since the interpenetrating line between the through plate and the rib plate has an angle with the lattice material core, the joint can be transmitted with an axial force even by fillet welding.

  Further, in the case where the structural frame in which the crossing structure of the string member described in any one of the above is a structural requirement is a structural requirement, each effect based on each structural requirement as described above is obtained. By adopting the crossing structure of the string members to be played, it is possible to construct a structural frame such as a roof frame of a large-scale building such as a gymnasium that is remarkably improved.

  Further, the joining portion of the upper chord members, which is a constituent element of claim 6, is composed of two joining plates that are substantially orthogonal to each other, and a corner portion formed between these joining plates When the structural frame adopting the crossing structure of the string member according to any one of the above, wherein the other end portion of the lattice material is connected to the gusset plate inserted and joined to the gusset plate, At the upper chord node, which is the intersection, a lattice set of gusset plates can be inserted and joined at a free angle into the corners made up of substantially perpendicular joining plates. Even if it is not a rotatable member, the upper chord node and the lower chord node can be connected using flat steel, L-shaped steel, or the like without processing such as torsion, so that the manufacture becomes easy.

It is the top and sectional view of the structure frame to which the crossing part structure of the string member of the present invention is applied. It is the top view and sectional drawing of another structure frame to which the cross | intersection part structure of the string member of this invention is applied. It is a top view and a sectional view of the 3rd structure frame to which the intersection part structure of a string member of the present invention is applied. FIG. 2 shows a first embodiment of the crossing structure of the string member of the present invention, which is a portion A of the bb cross section in FIG. 1 and its modification, and a portion B of the cross section aa in FIG. 1. The 2nd Example of the cross | intersection part structure of the string member of this invention is shown, and it is C section of the bb cross section of FIG. FIG. 2 is a D section of the aa cross section of FIG. 1 and a cross-sectional view thereof. FIG. 9 shows a third embodiment of the crossing structure of the string member of the present invention, which is a C ′ portion of the b′-b ′ cross section of FIG. 2 and a D ′ portion of the a′-a ′ cross section of FIG. 2. FIG. 9 shows a fourth embodiment of the crossing portion structure of the stringed member of the present invention, and is an A ′ portion of the b′-b ′ cross section of FIG. FIG. 2 is a C ′ section of the b′-b ′ section of FIG. 2 and a D ′ section of the a′-a ′ section of FIG. 2. This is the E portion of the a'-a 'cross section of FIG. FIG. 10 is a plan view showing a sixth embodiment of the crossing structure of the stringed member of the present invention, and is a plan view of an F portion of a dd section of FIG. 3 and a G portion of FIG. 3. FIG. 12 is a perspective view of the zz cross section of FIG. 11B and the upper chord crossing portion of the G portion of FIG. 3. It is a perspective view of the conventional intersection example.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments for implementing the crossing member structure of the string member and the structural frame of the present invention will be described below with reference to the drawings. As shown in FIG. 4, the crossed string member crossing structure and the structural frame of the present invention are cross-connected with a large number of string members 21 and 22 as the lower chord members among the chord members arranged at intervals in the vertical direction. In the intersecting portion structure of the string members configured as described above, a stringer member 21, 21 stretched in one direction, a through plate 40 a that connects the strings, a hollow member 103 that is cross-joined to the through plate 40 a, A string member 22 that is inserted into and fixed to the hollow member 103 and is stretched in at least one end of the screw member 104 in another direction is screwed and fixed (adjustable by a coupler 23 or the like). It is characterized by being connected.

  A first embodiment will be described below for the structural frame 1 of FIG. The structural frame 1 is configured as a three-dimensional frame in which the upper chord members 11 are arranged in an oblique lattice shape in a plan view, and the lower chord members 21 and 22 are arranged in an orthogonal lattice shape in a plan view. A general portion (A portion and B portion which are not end portions) where the lower chord member 22 in the X direction and the lower chord member 21 in the Y direction are orthogonal to each other is shown as shown in FIGS. 4A and 4D described later. . The lower chord members 21 and 21 in the Y direction (bb cross section), which are the chord members stretched in one direction, shown in FIG. , 21a are connected by bolts 21b, 21b and the like through the joining plates 21c, 21c. In the general portion in the Y direction, the lattice material 31 is in a plane determined by the lower chord material 21 and the bundle material 40. Therefore, the lattice material 31 is passed through the joining plate 31c by the battledore 31a and the bolts 31b through the joining plate 31c. Are connected to the lower chord members 21 and 21 in common.

  On the other hand, as shown in FIG. 4 (D), the lower chord members 22 and 22 which are chord members stretched in different directions are welded so as to intersect the through plate 40a at the lower end of the bundle member 40. Are connected to the both ends of the screw member 104 inserted through the cylindrical hollow member 103 projecting in the above manner, through the couplers 23 and 23 such as turnbuckles, so as to be adjustable. The inner diameter of the hollow member 103 is larger than the screw diameter carved on the outer periphery of the screw member 104, and the screw member 104 is inserted into the hollow member 103 in a loosely fitted state. Both ends of the screw member 104 are dimensioned to protrude from the hollow member 103, and the screw member 104 is formed into the hollow member 103 by tightening the hollow member 103 with nuts 103 a and 103 a that are screwed to both ends of the screw member 104. Fixed. Since the lattice material 32 in the X direction is in a plane determined by the lower chord material 22 and the bundle material 40, one side of the gusset plate 102 is placed on the shaft core 1030 (FIG. 4A) of the cylindrical hollow material 103. In addition, the other side is joined to the hollow material 103 and the through plate 40a by welding or the like so that the axis of the lattice material 32 coincides with the intersection of the axis of the lower chord material 22, 22 and the axis of the bundle 40 The lattice material 32 is connected to the gusset plate 102 by a battledore 32a and a joining plate 32c and bolts 32b. The bundle member 40 may be not only the illustrated steel pipe but also H-shaped steel, L-shaped steel, groove-shaped steel, and the like. The same applies to the following embodiments. 4 (B) and 4 (C) show another embodiment of the connection between the lower chord member 21 and the lattice member 31 and the through plate 40a. In this case, the bifurcated hardware 21d and 31d are used. The part becomes compact and advantageous in design.

  The 2nd Example of the cross | intersection part structure of the string member of this invention is shown, It respond | corresponds to the C part and D part which become the corner part of the lower chord of the structural frame 1 in FIG. 5A is a C portion of the bb cross section of FIG. 1, and FIG. 5B is a roll cross sectional view thereof. 6A is a D portion of the aa cross section of FIG. 1, and FIG. 6B is a cross-sectional view of the ha. As shown in the drawings, the lower chord nodes 21 and 22 are connected to the lower chord nodes in the part C of FIG. 5 and the part D of FIG. 6 only from one side, and two lattice materials 310 and 310 are provided on the opposite side. Then, since the lower chord member 21 or 22 and the bundle member 40 are connected to each other at a predetermined angle, the two sides are joined to the through plate 40a and the hollow member 103 by welding or the like. Gusset plates 102, 102 are provided. The direction of attachment of the gusset plates 102 and 102 will be described with respect to the D portion. As shown in FIG. 6B, the surface of the gusset plates 102 and 102 is rotated around the shaft core 1030 of the hollow material 103 to The angles θ1 and θ2 that coincide with the axes of the materials 320 and 320 may be determined. The mounting direction (θ2 in FIG. 5A) of the gusset plates 102 and 102 of the lattice material 310 and 310 of the C section is determined in the same manner.

  3 shows a third embodiment of the crossing structure of the string member of the present invention, which corresponds to the C ′ portion and the D ′ portion of the structural frame 2 of FIG. 2. 7 shows a C ′ portion of the b′-b ′ cross section of FIG. 2 and a D ′ portion of the a′-a ′ cross section of FIG. 2. There is one gusset plate 102 of the lattice material 32, and its attachment method corresponds to the case where the angles θ1 and θ2 shown in FIG. 6B are 0 degrees. In FIG. 2, 11 is an upper chord material, and 12 is a roof brace. The A ′ and B ′ portions, which are general portions where the lower chord material 22 in the X direction and the lower chord material 21 in the Y direction are orthogonal, are the same as the A portion and B portion in the first embodiment.

  4 shows a fourth embodiment of the crossed string member crossing structure according to the present invention, which corresponds to the A ′ portion, the C ′ portion, and the D ′ portion of the structural frame 2 of FIG. 2. FIG. 8 is a cross-sectional view of the A ′ portion of the b′-b ′ cross section of FIG. 9 shows a C ′ portion of the b′-b ′ cross section of FIG. 2 and a D ′ portion of the a′-a ′ cross section of FIG. 2. FIG. 10 is an E portion of the a′-a ′ cross section of FIG. 2. The structural frame 2 is a three-dimensional frame arranged in an orthogonal lattice so that the upper chord material and the lower chord material overlap each other. In this embodiment, the gusset plate 102 is attached in the case where the angles θ1 and θ2 shown in FIG. 6B are 0 degrees, and the two lower chord material joining plates 101, 101 sandwiching the through plate 40a. This is due to the method of connecting the lower chord members 21, 21 in the Y direction. In the present embodiment, as shown in the figure, the hollow member 103 is projected so as to intersect with at least one of the lower chord material joining plates 101 and 101 that sandwich the through plate 40a from both sides instead of the through plate 40a. The Accordingly, since the hollow material 103 integrated with the lattice material gusset plate 102 and the bundle material 40 with the through plate 40a are separated, the number of parts is increased, but the handling in manufacturing becomes easy.

  Although not shown in the figure, as in the fourth embodiment, the lower chord material joining plates 101 and 101 that sandwich the through plate 40a from both sides are provided, and the C portion that is the end of the structural frame 1 in FIG. This corresponds to the D part. As in the second embodiment (see FIGS. 5 and 6), the planes determined by the lower chord member 21 or 22 and the bundle member 40 and the lattice members 310 and 320 form an angle. The lattice material gusset plates 102 and 102 are formed in the same manner as described above, that is, with the axis 1030 of the hollow material 103 as the rotation center and at an angle (see θ1 and θ2 in FIG. 6B). The lower chord material joining plate 101 and the hollow material 103 are joined by welding or the like.

  FIG. 11 shows a sixth embodiment of the cross string structure of the string member according to the present invention, and FIG. 11 is a plan view of the F section of the dd section of the structural frame 3 of FIG. 3 and the G section of FIG. 12 is a perspective view of the z-z cross section of FIG. 11B and the upper chord crossing portion of the G portion of FIG. In this embodiment, the lattice material 50 in the X direction is L-shaped steel, and the lattice material 33 in the Y direction is flat steel. The lower chord materials 21 and 21 shown in FIGS. 11A and 11B are projected and joined by welding or the like so as to intersect the through plate 50a joined to the lower end of the lattice material 50 in the X direction. Both ends of the screw member 104 inserted through the cylindrical hollow member 103 are connected via couplers 23 and 23 such as a turnbuckle. The screw member 104 is fixed by tightening the hollow member 103 with nuts 103a and 103a, and the rib plate 110 is joined and attached to the shaft core 1030 of the cylindrical hollow member 103 (FIG. 12A). Gusset plates 102, 102 connecting the Y-direction lattice members 33, 33 so as to sandwich the rib plate 110 are inserted into the corners 99, 99 formed by the through plate 50 a and the rib plate 110, welding, etc. Are joined together.

  On the other hand, as shown in FIG. 12B, the upper chord joint, which is the upper chord intersection, is composed of two upper chord material joining plates 130, 130 that are substantially orthogonal to each other, and is formed by these upper chord material joining plates 130, 130. The gusset plate 102 for connecting the Y-direction lattice material 33 is inserted into the corners 99 and 99 to be joined and joined by welding or the like. As shown in FIG. 11, both ends of the lattice material 33 are connected to the gusset plates 102 and 102 via bolts 33b and a joining plate 33c. Therefore, since the gusset plate 102 that connects the lattice material 33 in the Y direction to both the upper chord and the lower chord can be inserted into the corner portion 99 at an arbitrary angle, the member can rotate around the axis as a steel rod with a turnbuckle as the lattice material. In addition, even when flat steel or L-shaped steel is used as in this embodiment, it is possible to connect the upper chord node and the lower chord node using flat steel or L-shaped steel without any twisting or other processing. Manufacturing becomes easy.

  Needless to say, when the lattice material 33 in the Y direction is used as a tensile material, a steel bar or the like having a necessary cross-sectional area may be used instead of a section steel. As described above, according to the present invention, it is possible to easily manufacture the crossing portion of the string member of the string beam used for the roof frame of the building between the large rooms such as the gymnasium. In particular, even when the lattice material is not in the plane determined by the lower chord material and the bundle material, it can be made compact and can provide an advantageous intersection structure with excellent design, and variations of structural frames using stringed beams Can be spread.

  The embodiment of the present invention has been described above. However, within the scope of the present invention, the structure and the form of the structural frame (the related configuration viewed in plan view of the lower chord material with respect to the upper chord material connected to each other are shown in FIG. 1 to 3, an appropriate configuration may be adopted) and material (preferably steel is adopted, but other metal material may be used), the form and shape of the through plate, and the lower chord (strung chord member), Hollow material, bundle material, lower chord material joining plate, rib plate, gusset plate and related configurations including hollow material, bundle material, lower chord material joining plate, rib plate, gusset plate type, shape, gusset plate Lattice material connection form (appropriate connection fittings can be used in addition to connection via a bifurcated hardware or battledore), screw member insertion / fixation form in hollow material, coupler of screw member and string member Etc. For the adjustment mode or the like can be appropriately selected. In addition, the specifications described in the examples are merely examples in all respects and should not be interpreted in a limited manner.

  The crossed string member structure and the structural frame of the present invention are used for a roof frame or the like of a large building such as a gymnasium, but at least a lower chord material is formed by cross-connecting a large number of string members. Any crossing portion of the chord member can be applied to various structures.

1, 2, 3 Structural frame 11 Upper chord material 12 Roof brace 21 Y-direction lower chord material (strut member)
22 X direction lower chord material
23 Couplers 31, 310, 33 Y-direction lattice materials 32, 320, 50 X-direction lattice materials 40 Bundle materials 40a, 50a, 200 Through plate 99 Corner 101 Lower chord material joining plate 102 Gusset plate 103 Hollow material 103a Nut 104 Screw Member 110 Rib plate 130 Upper chord material joining plate 1030 Axes of hollow material θ1, θ2 Opening angle of gusset plate in lattice material

Claims (6)

Connected string members that are stretched in one direction in the cross string structure of string members composed of a number of string members cross-connected to the lower string material among the strings that are spaced apart vertically A string member that is stretched in at least one end of the screw member in a different direction, and includes a hollow member that is cross-joined to the through plate, and a screw member that is inserted into and fixed to the hollow member. The crossing structure of the string member characterized by being screwed and connected. The crossing structure of the string member according to claim 1, wherein one end of a lattice material is connected to a gusset plate joined to both members of the through plate and the hollow material. 3. A plurality of gusset plates that connect one end portions of the lattice material are provided at a predetermined angle with respect to each other with a hollow material shaft that is cross-joined to the through plate as a rotation center. The crossing structure of the string member described in 1. One end of a lattice material is connected to a gusset plate that is inserted and joined to a corner formed by the through plate and a rib plate joined to a hollow material that is cross-joined to the through plate. The crossing structure of the string member according to claim 1. A structural frame in which the crossing structure of stringed members according to any one of claims 1 to 4 is adopted. The joint portion of the upper chord members that intersect each other is composed of two joining plates that are substantially orthogonal to each other, and the lattice material is inserted into a gusset plate that is inserted and joined to a corner formed between these joining plates. 5. The structural frame employing the crossing member structure of the string member according to any one of claims 1 to 4, characterized in that the other end of the string is connected.

Images