JP2006028801A - Truss member connecting structure and truss member connecting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a truss member connecting structure and a truss member connecting method, which can facilitate truss connecting work and which can greatly shorten connecting work time. <P>SOLUTION: A joint comprises joint plates 1 which are arranged in such a manner as to face each other; a circular positioning opening 2 is formed in the center of each joint plate 1; a connecting plate 11 for being connected to the joint plate 1 is elongated at both the ends of the truss member 3; sandwiched plates 12, which are held in the state of being sandwiched between the joint plates 1, are provided at the ends of the connecting plate 11 in such a manner as to be perpendicular to the width direction of the connecting plate; a positioning rod 4, both the ends of which can be inserted into the positioning opening 2, is provided in the width direction at the leading end of the connecting plate 11; and a tapered alignment punch 14 is pushed in between the positioning rods 4 which are inserted into the positioning opening 2, so that respective positioning rods 4 can be pushed and expanded for positioning. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a truss member connecting structure in which a truss member is connected to a joint and a truss member connecting method.

  Truss structures constructed by connecting truss members one after another with joints are used for roofs of gymnasiums, halls, exhibition halls, and the like. FIG. 6 is a diagram showing an example of a truss structure of a dome-shaped roof. Both ends of the truss member 21 are fixed to the joint 20 and the trusses 21 are connected one after another to form a dome.

  For example, in Patent Document 1, a truss member is formed by crushing an end portion of a truss member made of a metal pipe to form a bolt hole, and inserting a pin provided at the end portion of the truss member into a joint opening with a bolt. A truss structure to be fixed is disclosed.

In addition, metal pipes are often used for the truss members as in Patent Document 1, but wood is used for buildings such as gymnasiums to take advantage of the natural feeling and warmth of wood that metal pipes do not have. There is known a wooden truss member that uses the above. For example, Patent Document 2 discloses a truss structure in which connection end portions provided at both ends of a wooden truss member are connected by being inserted into a connection groove of a joint. Patent Document 3 discloses a truss structure in which connecting members formed with connecting screws provided at both ends of a log are screwed into a joint and connected.
Japanese Patent No. 2989928 JP 2003-74125 A JP 10-169006 A

  In a truss structure that is constructed by connecting truss members to joints, a number of truss members are connected one after another, so even if there is a slight deviation in dimensions during connection, the deviation will overlap and the truss structure may be deformed. Therefore, management of assembly accuracy is strictly required. In the conventional connecting method of truss members, a plurality of truss members are connected to one joint, but the connecting member is formed by screwing bolts by moving the truss members for each truss member. There is a problem that it takes time and labor to connect a plurality of truss members to the joint because it is necessary to accurately position one by one by adjusting the screwing amount.

  Therefore, the present invention provides a truss member connecting structure and a truss member connecting method that can simplify the connecting operation of the truss and can significantly reduce the connecting operation time.

  The truss member connection structure of the present invention is a truss structure in which a truss member is connected to a joint, and includes a joint plate in which the joints are arranged to face each other, and each joint plate has a circular positioning opening formed in the center thereof. At both ends of the truss member, connecting plates for connecting to the joint plates are respectively extended. At the end portions of the connecting plates, sandwiching plates sandwiched between joint plates arranged opposite to each other are connected to the connecting plates. In addition to being provided perpendicularly to the width direction, a positioning rod is provided in the width direction at both ends of the connecting plate so that both ends can be inserted into the positioning openings.

  In the above-described configuration, the truss member is a truss member in which a reinforcing plate is sandwiched and fixed between long timbers from both sides, and the reinforcing plate is provided with a connecting plate for connecting to a joint extending from the end surface position of the wood. can do.

  In the truss member connecting method of the present invention, after inserting the end of the positioning rod of the truss member to be connected to the positioning opening formed in the center of one joint plate, one of the joint plates and one of the joint plates provided on the connecting plate Temporarily tighten the clamping plate with bolts, and then insert the end of the positioning rod of the truss member to be connected into the positioning opening of the other coupling plate and place it on the other clamping plate. Temporarily tighten the other clamping plate provided with a bolt, and then push a tapered centering punch between the positioning rods inserted into the positioning openings to expand each positioning rod to the edge of the positioning opening After being moved and positioned, a bolt that has been temporarily tightened is tightened to fix the joint plate and the sandwiching plate.

  According to the present invention, the connecting operation of the truss members can be easily performed without trouble by pushing the centering punch between the positioning rods inserted in the positioning openings of the joint plate at the tip of the connecting plate. Therefore, the time for connecting the truss members can be greatly shortened.

  The present invention will be described below with reference to the drawings.

  1 is a perspective view showing a state in which a joint and a truss member according to the present invention are connected, FIG. 2A is a plan view, FIG. 1B is a side sectional view of AA along a reinforcing plate, and FIG. Is a side sectional view along the reinforcing plate showing the entire longitudinal direction of the truss member, and (b) is a plan view of the sandwiching plate of the truss member.

  1 and 2, the joint is composed of a joint plate 1 made of a circular metal plate and arranged facing the upper and lower sides, and the joint plate 1 is formed with a circular positioning opening 2 at the center. The positioning opening 2 is large enough to accommodate the positioning rod 4 of each truss member 3 to be connected.

  Moreover, in order to fix the truss member 3 with the volt | bolt 5 in the joint board 1, the bolt hole 5a is formed corresponding to every truss member. The hole diameter of the bolt hole 5a is larger than the bolt diameter so that play is provided so that the bolt 5 temporarily tightened as described later can move when the truss member 3 is positioned.

  As shown in FIG. 3, the truss member 3 of this embodiment is a combination of a long wood 6 and a reinforcing plate 7 made of a metal plate. Thinned wood can be used for the wood 6. The reinforcing plate 7 is sandwiched between the long woods 6 from both sides and fastened with bolts 8 to be fixed. The width of the reinforcing plate 7 may be the same over the entire length, or the weight of the truss member 3 is reduced by narrowing the central portion of the portion sandwiched between the timbers 6 within a range where the strength can be maintained. You can also.

  Bolts 8 for fixing the wood 6 and the reinforcing plate 7 are firmly fixed by injecting an adhesive from an adhesive injection hole 10 leading to the bolt hole 9 of the wood 6.

  Further, connecting plates 11 for connecting to the joint from the end face of the wood 6 extend to the reinforcing plate 7 respectively. When the connecting plate 11 forms a dome-shaped roof, as shown in FIG. 3B, a reinforcing plate 7 sandwiched between the axis of the end of the connecting plate 11 and the wood 6 to form an arch by connection. The axis of the axis is not a straight line but extends at an angle.

  A fan-shaped sandwiching plate 12 that is sandwiched between the opposing coupling plates 1 is provided at the end of the coupling plate 11 so as to be perpendicular to the width direction of the coupling plate 11. In the present embodiment, since six truss members 3 are connected, the fan-shaped opening angle is 60 degrees. Bolt holes 13 for fixing the joint plate 1 with the bolts 5 are formed in the sandwiching plate 12. It should be noted that the hole diameter of the bolt hole 13 is larger than the bolt diameter so that play is provided so that the bolt 5 temporarily tightened can be moved when the truss member 3 is positioned in the same manner as the bolt hole 5 a of the joint plate 1. The clamping plate 12 is temporarily tightened between the opposing coupling plates 1 with bolts 5 and is clamped and fixed after positioning.

  Positioning rods 4 are integrally provided on the end surface of the connecting plate 11 in the width direction of the connecting plate 11, and both ends of the positioning rod 4 are provided so as to enter the positioning opening 2 at the center of the upper and lower joint plates 1.

  Next, a procedure for connecting the truss members will be described.

  After the positioning rod 4 of the truss member 3 is inserted into the central positioning opening 2 of the lower joint plate 1, the bolt 5 is temporarily tightened into the bolt hole 5 a of the joint plate 1 and the bolt hole 13 of the clamping plate 12. In this temporarily tightened state, the truss member 3 has a degree of freedom to move when a strong force is applied. Similarly, the positioning rods 4 of the remaining truss members 3 are inserted into the positioning openings 2 of the joint plate 1 and temporarily tightened.

  Next, after placing the joint plate 1 on the upper sandwiching plate 12 so that the positioning rods 4 of all the truss members 3 enter the positioning openings 2 of the upper joint plate 1, the bolt holes 5a and the sandwiching plates 12 of the joint plate 1 are placed. The bolt 5 is temporarily tightened through the bolt hole 13.

  When the connection of the truss member 3 is completed by temporarily tightening the joint plate 1 and the clamping plate 12, when the tapered centering punch 15 is pushed between the six positioning rods 4 inserted into the positioning opening 2, Each positioning rod 4 is spread and moved to the edge of the positioning opening 2 of the joint plate 1 to be positioned. After positioning, the temporarily tightened bolt 5 is tightened to firmly fix the joint plate 1 and the sandwiching plate 12.

  In the present embodiment, by pressing the tapered centering punch 15 between the positioning rods 4, it is possible to simultaneously align and position without trouble.

  4A and 4B show another embodiment showing a state in which the joint according to the present invention and the truss member are connected, wherein FIG. 4A is a perspective view, FIG. 4B is a plan view, and FIG. 4C is a side sectional view of BB. The same members as those shown in FIG. 1 to FIG.

  In this embodiment, the metal pipe 15 is used for the truss member 3, and the connecting plate 11 is inserted and fixed to the end of the metal pipe 15. As in the first embodiment, the connecting plate 11 is provided with a sandwiching plate 12 and a positioning rod 4.

  In the present embodiment, the truss member 3 is aligned and positioned by the same connection procedure as in the first embodiment.

  FIG. 5 shows another embodiment in which the joint according to the present invention and the truss member are connected, (a) is a perspective view, (b) is a plan view, and (c) is a cross-sectional side view of BB. The same members as those shown in FIGS. 1 to 3 are denoted by the same reference numerals, and the description thereof is omitted.

  Similarly to the second embodiment, the present embodiment is an example in which the metal pipe 15 is used for the truss member 3, and the end portion of the metal pipe 15 is fixed to the connecting plate 11. As in the first embodiment, the connecting plate 11 is provided with a sandwiching plate 12 and a positioning rod 4.

  In the present embodiment, the truss member 3 is aligned and positioned by the same connection procedure as in the first embodiment.

It is a perspective view which shows the state which connected the coupling and truss member by this invention. (A) is a top view, (b) is a sectional side view of AA along the reinforcing plate. (A) is a sectional side view along the reinforcing plate showing the entire longitudinal direction of the truss member, (b) is a plan view of the sandwiching plate of the truss member. The another Example which shows the state which connected the coupling and truss member by this invention is shown, (a) is a perspective view, (b) is a top view, (c) is a sectional side view of BB. The another Example which shows the state which connected the coupling and truss member by this invention is shown, (a) is a perspective view, (b) is a top view, (c) is a sectional side view of BB. Diagram showing an example of a truss structure with a dome-shaped roof

Explanation of symbols

1: Joint plate 2: Positioning opening 3: Truss member 4: Positioning rod 5: Bolt 5a: Bolt hole 6: Wood 7: Reinforcement plate 8: Bolt 9: Bolt hole 10: Adhesive injection hole 11: Connecting plate 12: Clamping plate 13: Bolt hole 14: Centering punch 15: Metal pipe 20: Joint 21: Truss member

Claims (3)

  In a truss structure in which a truss member is connected to a joint, the joint is composed of joint plates arranged opposite to each other, each joint plate is formed with a circular positioning opening at the center thereof, and a joint is formed at both ends of the truss member. Connecting plates for connecting to the plates are respectively extended, and at the end portions of the connecting plates, sandwiching plates sandwiched between joint plates arranged to face each other are provided to face at right angles to the width direction of the connecting plates. And a truss member coupling structure, characterized in that positioning rods whose both ends can be inserted into the positioning openings are provided in the width direction at the distal ends of the coupling plates.   The truss member is a truss member in which a reinforcing plate is sandwiched and fixed by a long piece of wood from both sides, and a connecting plate for connecting to a joint extending from the end face position of the wood to the reinforcing plate is provided. The truss member connecting structure according to claim 1.   3. A connecting method for a truss member connecting structure according to claim 1 or 2, wherein after inserting an end portion of a positioning rod of a truss member to be connected to a positioning opening formed in the center of one of the joint plates, it is connected to one of the joint plates. One clamping plate provided on the plate is temporarily tightened with a bolt, and then the end of the positioning rod of the connecting truss member is inserted into the positioning opening of the other joint plate and placed on the other clamping plate, The joint plate and the other clamping plate provided on the connecting plate are temporarily tightened with bolts, and a taper-shaped centering punch is pushed between the positioning rods inserted into the positioning openings to push each positioning rod. A method for connecting a truss member, characterized in that the joint plate and the clamping plate are fixed by tightening a bolt that has been temporarily tightened after being spread and moved to the edge of the positioning opening.

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