JP2011047204A - Nodal structure of latticed shell structure, and method for constructing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a nodal structure of a latticed shell structure, which enables the construction of the latticed shell structure with a curved shape, while easily and accurately joining a beam material and a joint member together; and to provide a method for constructing the nodal structure. <P>SOLUTION: Characteristically, this nodal structure of the latticed shell structure includes: the plurality of beam materials 10; the joint member 102 which has a tubular shape, and which has a contact surface 108 on a tubular outer surface formed away from the center axis of the tubular shape by a predetermined distance; and an end member 112 which comprises a first surface 118 brought into contact with the contact surface of the joint member and bolt-joined to the joint member and a second surface 113 welded to the beam material, and which is formed in such a shape as to uniquely specify the angle of the second surface with respect to the central axis of the joint member when the first surface is bolt-joined to the contact surface of the joint member. The beam material has a shape of an end worked on the basis of the angle of the second surface of the end member specified when it is bolt-joined to the contact surface of the joint member, and the installation angle of the beam material with respect to the central axis, and has an end surface 11 which is welded to the second surface. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a nodal structure of a lattice shell structure and a construction method thereof, and more particularly to a nodal structure and a construction method optimum for a lattice shell structure having a curved surface shape or a polygonal shape.

  A lattice shell structure (grid shell structure) may be employed for the structure in order to configure a roof of a building. The lattice shell structure is composed of a beam material and a node where a plurality of beam materials are assembled and joined together. A roof is formed by installing a plate material such as glass or steel plate on the upper surface or the lower surface of the structure having a lattice shell structure.

  For example, Patent Documents 1 to 5 disclose a technique related to a node structure including a beam member and a joint member at a node. Patent Documents 1 to 4 describe a nodal structure in which a beam member and a joining member are joined by bolts, and Patent Document 5 welds a frame member 3 corresponding to a beam member and a main body portion 4 equivalent to a joining member. The nodal structure joined by is described. In addition, the nodes of the lattice shell structure are configured by joining a plurality of beam members directly to each other by welding or by fitting a beam member into a joining member.

JP-A-6-57829 International Publication No. 94/20698 Soviet Union Patent No. 777170 Soviet Union Patent 614185 Japanese Patent Laid-Open No. 9-279949

  By the way, some structures having a lattice shell structure have a curved surface shape instead of a planar shape. In the lattice shell structure having a curved surface shape, the attachment position and the attachment direction of the beam material are different for each beam material at a node where a plurality of beam materials gather. Therefore, it is necessary to change the shape of the end surface of the beam material for each beam material at the node. In particular, in the case of a complicated curved surface shape that is not a symmetrical shape, different processing is required for each node, and thus there is a problem that it takes labor and time to construct a lattice shell structure.

  And in order to construct the node of a lattice shell structure on-site, there are bolt joint, welding, or combined use of bolt joint and welding. When welding is used for the construction of the nodes, there is a further problem that labor and time are required for construction of the lattice shell structure.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is a lattice shell structure having a curved surface shape or a polygonal shape while easily and accurately joining a beam member and a joining member. It is an object of the present invention to provide a new and improved lattice structure having a lattice shell structure and a method for constructing the same.

  In order to solve the above-described problems, according to an aspect of the present invention, a plurality of beam members are in contact with each other on a cylindrical outer surface having a cylindrical shape and spaced apart from a central axis of the cylindrical shape by a predetermined distance. A joining member having a surface; a first surface that contacts the contact surface of the joining member and is bolted to the joining member; and a second surface to be welded to the beam member, the first surface being the joining member. And an end member formed in a shape that uniquely defines an angle of the second surface with respect to the central axis of the joining member when bolted to the contact surface of the joining member, and the beam member includes the contact surface of the joining member and the bolt The shape of the end is machined based on the angle of the second surface of the end member defined when joined and the installation angle of the beam with respect to the central axis, and the end to be welded to the second surface A node structure of a lattice shell structure having a face is provided.

  According to this configuration, the center of the joint member determined in advance is obtained by welding the end surface of the beam member and the second surface of the end member, and bolting the welded beam member and the end member. Beam material can be installed at an installation angle with respect to the shaft.

  A protrusion may be formed on the contact surface, and a groove that engages with the upper and lower portions of the protrusion may be formed on the first surface. Alternatively, a protrusion may be formed on the first surface, and a groove that engages with the upper and lower portions of the protrusion may be formed on the contact surface.

  The joining member has an internal space defined by a cylindrical surface, has a curved surface along the cylindrical surface of the joining member, a surface in contact with the cylindrical surface, and a planar surface opposite to the surface in contact with the cylindrical surface And a washer that has a surface on the surface and a bolt that contacts the washer and sandwiches the washer between the joining member and the end member.

  In order to solve the above problems, according to another aspect of the present invention, there is provided a joining member formed on a tubular outer surface at a predetermined distance from a tubular central axis of a joining member having a tubular shape. Determining the angle of the second surface of the end member different from the first surface with respect to the central axis of the joining member when the contact surface and the first surface of the end member are bolted together; Determining and processing the shape of the end surface of the beam material to be welded to the second surface based on the angle with respect to the central axis of the beam and the installation angle of the beam material, and the end surface and end member of the beam material There is provided a method for constructing a node structure having a lattice shell structure, the method comprising the steps of welding the second surface of the end member and bolting the first surface of the end member and the contact surface of the joining member.

  As described above, according to the present invention, a lattice shell structure having a curved surface shape or a polygonal shape can be constructed while easily and accurately joining a beam member and a joining member.

It is a perspective view which shows the structure 1 of the lattice shell structure which concerns on the 1st Embodiment of this invention. It is a top view which shows the nodal structure 100 which concerns on the same embodiment. It is sectional drawing which shows the nodal structure 100 which concerns on the same embodiment. It is sectional drawing which shows the nodal structure 100 which concerns on the same embodiment. It is a side view which shows the nodal structure 100 which concerns on the embodiment. It is sectional drawing which shows the nodal structure 100 which concerns on the same embodiment. It is a top view which shows the nodal structure 200 which concerns on the 2nd Embodiment of this invention. It is sectional drawing which shows the nodal structure 200 which concerns on the same embodiment. It is a side view which shows the nodal structure 200 which concerns on the same embodiment. It is sectional drawing which shows the nodal structure 200 which concerns on the same embodiment. It is sectional drawing which shows the nodal structure 100 which concerns on the example of a change of the 1st Embodiment of this invention. It is a perspective view which shows the joining block 302 of the nodal structure 100 which concerns on the example of a change of the embodiment.

  Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

(First embodiment)
First, the lattice shell structure according to the first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a perspective view showing a structure 1 having a lattice shell structure according to the first embodiment of the present invention.

  The lattice shell structure is used to construct a roof of a building, for example. FIG. 1 is a shape shown for explaining the present embodiment, and the shape of the structure of the lattice shell structure is not limited to the shape of the structure 1 and may be configured in other shapes.

  The structure 1 having a lattice shell structure includes, for example, a beam member 10 and a bracing member 20. In addition, a node structure 100 including the beam member 10, the bracing member 20, the joining block 102, the end block 112, and the like is formed at the nodes of the lattice shell structure in which the plurality of beam members 10 are gathered (see also FIG. 2 and subsequent drawings). ). A roof is configured by installing a plate material such as glass or steel plate on the upper surface or the lower surface of the structure 1 having a lattice shell structure. As can be seen from FIG. 1, when the lattice shell structure 1 has a curved surface shape or a polygonal shape instead of a planar shape, the beam material 10 is assembled at a different angle for each node where the plurality of beam materials 10 are assembled. To do. Therefore, the shape of the end surface of the beam material 10 is different for each beam material 10, and it is necessary to prepare the beam material 10 having various shapes. According to the present embodiment, the shape of the joining block 102 used for the nodal structure 100 and the end block 112 joined to the end of the beam member are the same as the installation position and direction of the nodal structure 100, the attachment position and attachment direction of the beam member 10. Regardless, all are the same. However, by joining the end block 112 to the end face 11 of the beam member 10, the beam member 10 can be joined to each other at each node where a plurality of beams are gathered while being installed at different angles. And since it is not necessary to prepare various shapes of beams at the construction site, the construction of the nodal structure 100 is facilitated.

Next, the nodal structure 100 according to the present embodiment will be described with reference to FIGS.
FIG. 2 is a plan view showing the nodal structure 100 according to the present embodiment. FIG. 3 is a cross-sectional view showing the nodal structure 100 according to the present embodiment, which is a cross-sectional view taken along the line BB of FIG. 4 is a cross-sectional view showing the nodal structure 100 according to the present embodiment, which is a cross-sectional view taken along the line CC in FIG. FIG. 5 is a side view showing the nodal structure 100 according to the present embodiment. FIG. 6 is a cross-sectional view showing the nodal structure 100 according to the present embodiment, which is a cross-sectional view taken along the line AA of FIG.

  The nodal structure 100 includes a beam member 10, a bracing member 20, a joining block 102, an end block 112, high strength bolts 122 and 124, an upper lid 132, and bracing member pressing plates 142, 144 and 148. And a through bolt 152. The node structure 100 is formed at a node where a plurality of beam members 10 are gathered. As shown in FIG. 1, when a quadrangle is formed by four beam members 10, the lattice shell structure can be stably maintained by fixing the bracing material 20 to the nodes.

Hereinafter, each component of the node structure 100 will be described in detail.
The beam member 10 is, for example, a rod-shaped member and is made of steel. An end face 11 is formed at the end of the beam member 10, and the end face 11 is joined to the end block 112. The beam member 10 acts as a part of the beam in the lattice shell structure.

  The brace material 20 is, for example, a linear member, and is a steel cable or the like. The bracing material 20 is fixed at nodes by bracing material holding plates 142, 144, and 148.

  The joining block 102 is an example of a joining member, and has a cylindrical shape, for example, and has an opening parallel to the central axis of the cylindrical shape. The shape of the joining block 102 is constant regardless of the installation position and direction of the nodal structure 100. The outer peripheral surface of the joining block 102 is a cylindrical surface. The inner peripheral surface of the joining block 102 is a plane on which the high strength bolts 122 and 124 are fixed. The joining block 102 has a material and a structure having a strength capable of withstanding the moment transmitted from the beam member 10. In the joining block 102, bolt holes 104 and 106 penetrating the joining block 102 are formed at positions where the beam material 10 is joined and joined to the end block 112. Note that the planar position of the inner surface of the joining block 102 is not limited to the example in which the angle between the adjacent plane and the adjacent plane as shown in FIG. 3 is 90 °. The angle may be a position other than 90 °. The same applies to the positions of the bolt holes 104 and 106.

  The bolt holes 104 and 106 have a diameter wider than that of the high-strength bolts 122 and 124, and are formed perpendicularly to the central axis from the central axis of the joining block 102 toward the outer peripheral surface. The bolt hole 104 is located above the joining block 102, and the bolt hole 106 is located below the joining block 102. One bolt hole 104 and one bolt hole 106 that are in a vertical relationship are arranged in parallel to the central axis of the joining block 102.

  The contact surface 108 is a part of a cylindrical outer peripheral surface that is formed a predetermined distance away from the central axis of the bonding block 102 that is formed in a cylindrical shape, and is in contact with the first bonding surface 118 of the end block 112. Contact.

  The end block 112 is an example of an end member, and is provided at the end of the beam member 10 by welding. The shape of the end block 112 is constant regardless of the installation position and direction of the nodal structure 100. The end block 112 includes a first bonding surface 118 that is an example of a first surface and a second bonding surface 113 that is an example of a second surface.

  The first joining surface 118 of the end block 112 contacts the contact surface 108 of the joining block 102 and is bolted to the joining block 102 by bolts 122 and 124. The shape of the first bonding surface 118 has a shape along the shape of the contact surface 108 of the bonding block 102. In the present embodiment, since the contact surface 108 is a cylindrical surface, the first joining surface 118 also has a concave surface along the cylindrical surface. The end block 112 is formed with bolt holes 114 and 116 opened on the first joint surface 118 side of the joint block 102.

The second joint surface 113 of the end block 112 is welded to the end surface 11 of the beam member 10. For example, the second bonding surface 113 is provided at a position facing the first bonding surface 118.
The end block 112 is not affected by the attachment position and attachment direction of the beam member 10 and the joining position with the joining block 102, and is not affected by the position of the node, and always has the same shape. That is, the end block 112 has an angle of the second joint surface 113 with respect to the central axis of the joint block 102 regardless of the position of the contact surface 108 when the first joint surface 118 is bolted to the joint block 102. Is formed in a uniquely defined shape.

  The bolt holes 114 and 116 are formed on a straight line perpendicular to the central axis from the central axis of the joint block 102 toward the end block 112 when the end block 112 is joined to the joint block 102. . The bolt hole 114 is located above the end block 112, and the bolt hole 116 is located below the end block 112. One bolt hole 114 and one bolt hole 116 that are in a vertical relationship are arranged so as to be parallel to the central axis of the joining block 102 when the end block 112 is joined to the joining block 102. The bolt holes 114 correspond to the bolt holes 104 of the joining block 102, and the bolt holes 116 correspond to the bolt holes 106 of the joining block 102. Bolt holes 114 and 116 are internally threaded.

  The high-strength bolts 122 and 124 are formed with male threads at the tip portions. The high-strength bolt 122 is inserted from the inside of the joining block 102 toward the outside, passes through the bolt hole 104 of the joining block 102, and is screwed into the bolt hole 114 of the end block 112. The high-strength bolt 124 is inserted from the inside of the joining block 102 toward the outside, passes through the bolt hole 106 of the joining block 102, and is screwed into the bolt hole 116 of the end block 112. One high-strength bolt 122 and one high-strength bolt 124 inserted in a vertical relationship form a pair, and the one end block 112 and the joining block 102 are bolted together.

The upper lid 132 is, for example, a plate-like member, and is provided at an axial end portion, for example, an upper end portion of the joining block 102. As shown in FIG. 6, the upper lid 132 has a protruding shape so that it can be fitted into an opening formed in the joining block 102. Thereby, the shift | offset | difference of the upper cover 132 by the tensile force etc. of the brace 20 can be prevented. The upper lid 132 has a bolt hole 134 formed at the center.
The bolt hole 134 is formed through, for example, the upper lid 132, and a female screw is formed therein.

  The brace material pressing plates 142, 144, and 148 are plate-like members, for example, and are provided on the side opposite to the upper lid 132. The brace material pressing plate 142 is provided at an axial end portion, for example, a lower end portion, of the joining block 102. The bracing material pressing plate 144 is provided between the bracing material pressing plate 142 and the bracing material pressing plate 148. The brace material pressing plate 148 is provided at the lowermost end portion of the nodal structure 100. Grooves 146 are formed on both sides of the bracing material holding plate 144, and the bracing material 20 is disposed along the grooves 146. In addition, through holes 143, 145, and 149 that penetrate the bracing material pressing plates 142, 144, and 148 are formed at the centers of the bracing material pressing plates 142, 144, and 148, respectively.

The through holes 143, 145, and 149 have a diameter wider than that of the through bolt 152, and the through bolt 152 is installed therethrough.
The through bolt 152 is formed with a male screw at the tip. The through bolt 152 passes through the through holes 143, 145, and 149 and is screwed into the bolt hole 134.

  Next, a design / construction method of the lattice shell structure 1 and the node structure 100 according to the present embodiment will be described.

  The joint block 102 and the end block 112 used in the node structure 100 have a fixed shape regardless of the installation position and installation direction of the node structure 100. According to this embodiment, it is not necessary to process the joining block 102 and the end block 112 according to the beam material 10 etc. at the construction site of the structure 1 having the lattice shell structure.

  In order to construct the structure 1 having a lattice shell structure, first, the position and number of nodes and the position and number of beam members 10 are determined. Thereby, the approximate length of the beam member 10 can be determined. Further, the length and the like of the bracing material 20 are similarly determined based on the nodes.

  Then, the shapes of the joining block 102 and the end block 112 used for the node structure are determined. Since the joint block 102 and the end block 112 are commonly used in a fixed shape regardless of the installation position and installation direction of the nodal structure 100, they may be produced according to the number of nodes. In the example described above, the joining block 102 is provided with four end blocks 112, and the angle formed by the joining positions of the adjacent end blocks 112 is 90 degrees.

  Next, the installation direction of the joining block 102 is determined, and the central axis direction of the joining block 102 at the time of installation is determined. The end block 112 has a unique angle of the second joint surface 113 with respect to the central axis of the joint block 102 when the first joint surface 118 of the end block 112 is bolted to the contact surface 108 of the joint block 102. It is formed in the shape prescribed | regulated.

  Accordingly, considering the angle of the second joint surface 113 with respect to the central axis of the joint block 102 and the installation angle of the beam member 10 with respect to the central axis of the joint block 102, the beam member 10 to be welded to the second joint surface 113. The shape of the end surface 11 is determined, and the end surface 11 is processed into the determined shape. Then, the end surface 11 of the beam member 10 and the second joint surface 113 of the end block 112 are welded. This welding operation is performed not at the construction site of the structure 1 having the lattice shell structure, but at a factory, for example. A plurality of members (hereinafter referred to as “beam materials with end blocks”) in which the beam member 10 and the end block 112 are welded and combined are produced and carried out to the construction site.

  Then, the beam material with the end block is bolted to the joining block 102 at the construction site of the structure 1 having the lattice shell structure. Since all the joining blocks 102 have the same shape, they may be arranged at any node. The beam member with the end block is a member in which the end block 112 is joined to the beam member 10 in consideration of the attachment position and the attachment direction of the beam member 10 and is thus arranged at an appropriate predetermined node. To do.

  Thereafter, the first joining surface 118 of the end block 112 and the contact surface 108 of the joining block 102 are bolted together. This bolt joining work is performed on a plurality of beam members with end blocks in one joining block 102, and the same work is performed in a joining block at another node to construct a structure 1 having a lattice shell structure. To do.

  Usually, when a plurality of beam members are joined to a joining member at a node of a lattice shell structure having a curved surface shape or a polygonal shape, the attachment position and the attachment direction of the beam members are different for each beam member. Therefore, conventionally, it has been necessary to change the shape of the end surface of the beam member to be bonded to the bonding member for each beam member. Also, the shape of the end face of the beam material varies depending on the position of the node. Therefore, even if the beam material is manufactured in the factory, it is necessary to process the end surface of the beam material at the construction site, which takes labor and time.

  In addition, there has been a conventional nodal structure that joins a joining member and a beam material, and bolt joining is used with all the joining members being the same regardless of the position of the node. It depended on the shape of the member. Therefore, if the joint member is made common and the joint between the joint member and the beam material is bolted, the beam material can be attached only in a predetermined direction. For example, a lattice shell structure having a complicated curved surface shape that is not symmetrical Could not be built.

  On the other hand, according to the present embodiment, the shapes of the joining block 102 and the end block 112 used in the node structure 100 are the same regardless of the installation position and direction of the node structure 100 and the installation position and installation direction of the beam member 10. is there. However, the end block 112 is joined to the end surface 11 of the beam member 10 before the nodal structure is constructed on site to produce a beam member with an end block. At this time, the angle of the member axis of the beam member 10 and the central axis of the bonding block 102 has already been adjusted between the end surface 11 of the beam member 10 and the second bonding surface 113 of the end block 112. The beam member 10 and the end block 112 are joined. Therefore, at the construction site, the beam material 10 can be installed in an appropriate position and direction by only bolting the beam material with the end block to the joining block 102 without separately processing the beam material with the end block. it can. The joining of the joining block 102 and the beam material with the end block is a bolt joining, and the members can be joined easily and accurately compared to welding. Therefore, according to this embodiment, construction of the node structure 100 having a lattice shell structure having a curved surface shape or a polygonal shape is facilitated.

  Next, a nodal structure 100 according to a modification of the first embodiment of the present invention will be described with reference to FIGS. FIG. 11 is a cross-sectional view showing a nodal structure 100 according to a modification of the present embodiment. FIG. 12 is a perspective view showing the joining block 302 of the nodal structure 100 according to a modification of the present embodiment.

  The nodal structure 100 according to the modified example includes a beam member 10, a bracing member 20, a joining block 302, an end block 112, high strength bolts 122 and 124, an upper lid 132, a bracing member pressing plate 142, 144, 148, through bolts 152, and washers 372. The beam material 10, the bracing material 20, the end block 112, the high-strength bolts 122 and 124, the upper lid 132, the bracing material pressing plates 142, 144 and 148, and the through bolt 152 are the first described above. The detailed description will be omitted.

Hereinafter, the joint block 302 and the washer 372 of the nodal structure 200 according to the modified example will be described.
The joining block 302 is an example of a joining member, for example, has a cylindrical shape and has an opening parallel to the central axis. The shape of the joining block 302 is constant regardless of the installation position and direction of the nodal structure 100. The outer peripheral surface of the joining block 302 is a cylindrical surface. The inner peripheral surface of the joining block 302 is a cylindrical surface, and the inner space of the joining block 302 is defined by this cylindrical surface. The joining block 302 has a material and a structure having strength that can withstand the moment transmitted from the beam member 10. The joint block 302 is formed with bolt holes 304 and 306 penetrating the joint block 302 at positions where the beam member 10 is joined and joined to the end block 112.

  The bolt holes 304 and 306 have a diameter wider than that of the high-strength bolts 122 and 124, and are formed perpendicularly to the central axis from the central axis of the joining block 302 toward the outer peripheral surface. The bolt hole 304 is located above the joining block 302, and the bolt hole 306 is located below the joining block 302. One bolt hole 304 and one bolt hole 306 that are in a vertical relationship are arranged in parallel to the central axis of the joining block 302. In addition, about the position of the bolt holes 304 and 306, the angle | corner which adjoins the bolt holes 304 and 306 makes is not limited to the example shown in FIG. 11, The position which changes according to the attachment position of the beam material 10 may be sufficient.

  The contact surface 308 is a part of the outer peripheral surface of the joining block 302 and is in contact with the first joining surface 118 of the end block 112.

  The washer 372 is a member that assists so that the heads of the high-strength bolts 122 and 124 can be fixed on a plane. The bolt holes 304 and 306 of the joining block 302 are formed perpendicular to the central axis from the central axis of the joining block 302 toward the outer peripheral surface, and penetrate the joining block 302 by connecting the internal space of the joining block 302 and the outside. Provided. The washer 372 is provided with through holes 374 and 376 corresponding to the bolt holes 304 and 306 of the joining block 302.

  The shape of the washer 372 is a constant shape no matter where the bolt holes 304 and 306 are provided on the outer peripheral surface of the joining block 302. The washer 372 is provided on the inner surface of the joining block 302. On one side of the washer 372, a surface that contacts the high-strength bolts 122 and 124 is formed in a flat shape, and on the other side of the washer 372, a surface that contacts the inner surface having the cylindrical surface of the joining block 302 is along the cylindrical surface. It is formed on a curved surface. The installation position of the washer 372 is not limited to the example shown in FIG. 11 in terms of the angle formed by the adjacent washer 372, and may be a position that varies depending on the mounting position of the beam member 10.

  The high-strength bolt 122 is inserted from the inside of the joining block 302 toward the outside, passes through the through hole 374 of the washer 372 and the bolt hole 304 of the joining block 302, and is screwed into the bolt hole 114 of the end block 112. . The high-strength bolt 124 is inserted from the inside of the joining block 302 toward the outside, passes through the through hole 376 of the washer 372 and the bolt hole 306 of the joining block 302, and is screwed into the bolt hole 116 of the end block 112. . One high-strength bolt 122 and one high-strength bolt 124 inserted in a vertical relationship form a pair, and the one end block 112 and the joining block 302 are bolted together.

  In this way, by using the washer 372, a plane portion for bolt joining can be provided at an arbitrary position inside the joining block 302. As a result, the beam member 10 is attached to the joining block 302 at various angles. Therefore, according to the modified example of the present embodiment, the construction of the node structure 100 having a lattice shell structure having a curved surface shape or a polygonal shape is facilitated.

(Second Embodiment)
Next, the nodal structure 200 according to the second embodiment of the present invention will be described with reference to FIGS. FIG. 7 is a plan view showing the nodal structure 200 according to the present embodiment. FIG. 8 is a cross-sectional view showing the nodal structure 200 according to the present embodiment, which is a cross-sectional view taken along the line BB of FIG. FIG. 9 is a side view showing the nodal structure 200 according to the present embodiment. FIG. 10 is a cross-sectional view showing the nodal structure 200 according to the present embodiment, which is a cross-sectional view taken along the line AA of FIG. 9 is represented in the same manner as the cross-sectional view shown in FIG.

  The nodal structure 200 includes a beam member 10, a bracing member 20, a joining block 202, an end block 212, high strength bolts 122 and 124, an upper lid 132, and bracing member pressing plates 142, 144 and 148. And a through bolt 152. The beam material 10, the bracing material 20, the high strength bolts 122 and 124, the upper lid 132, the bracing material pressing plates 142, 144 and 148, and the through bolts 152 are the same as those in the first embodiment. Detailed description is omitted.

Hereinafter, the other components of the node structure 200 will be described in detail.
The joining block 202 is an example of a joining member, for example, has a cylindrical shape and has an opening parallel to the central axis. The outer peripheral surface of the joining block 202 is a cylindrical surface, and the inner peripheral surface of the joining block 202 is a plane on which the high strength bolts 122 and 124 are fixed. A protrusion 207 is provided on the outer peripheral surface of the joining block 202 corresponding to the joining position with the end block 212. The joining block 202 has a material and a structure having strength that can withstand the moment transmitted from the beam member 10. The joint block 202 is formed with bolt holes 104 and 106 penetrating the joint block 202 at positions where the beam member 10 is joined and joined to the end block 212.
The bolt holes 104 and 106 are formed in the joining block 202 as in the first embodiment.

  The protruding portion 207 is provided in the vicinity of the middle portion of the outer peripheral surface of the joining block 202 so as to protrude from the outer peripheral surface located at the upper and lower portions of the protruding portion 207 from the center to the outer side. The protruding portion 207 engages with the groove portion 217 of the end block 212.

  The contact surface 208 is a part of the outer peripheral surface of the joining block 202 and is in contact with the first joining surface 218 of the end block 212. The contact surface 208 includes the outer surface of the protrusion 207.

  The end block 212 is an example of an end member, and is provided at the end of the beam member 10 by welding. The end block 212 is not affected by the attachment position and attachment direction of the beam member 10 and the joining position with the joining block 202, and is not affected by the position of the node, and can always have the same shape.

The end block 212 includes a first bonding surface 218 that is an example of a first surface and a second bonding surface 213 that is an example of a second surface.
The first joint surface 218 of the end block 212 is in contact with the contact surface 208 of the joint block 202 and is bolted to the joint block 202 by bolts 122 and 124. The shape of the first joining surface 218 has a shape along the shape of the contact surface 208 of the joining block 202. In the present embodiment, since the contact surface 208 is a cylindrical surface, the first joint surface 218 also has a concave surface along the cylindrical surface. Further, a groove 217 is provided on the first bonding surface 218 corresponding to the bonding position with the bonding block 202. The end block 212 is formed with bolt holes 114 and 116 opened on the first joining surface 218 side of the joining block 202. The bolt holes 114 and 116 are formed in the end block 212 as in the first embodiment.
The second joint surface 213 of the end block 212 is welded to the end surface 11 of the beam member 10. For example, the second bonding surface 213 is provided at a position facing the first bonding surface 218.

  The groove portion 217 is provided in the vicinity of the middle portion of the first joint surface 218 of the end block 212 so as to be recessed inward from the first joint surface 218 located at the upper and lower portions of the groove portion 217. The groove 217 engages with the protrusion 207 of the joining block 202.

  According to this embodiment, in addition to the effect of 1st Embodiment mentioned above, there exist the following effects. That is, as described above, according to the present embodiment, the protrusion 207 protrudes on the outer peripheral surface of the joining block 202 from the outer peripheral surface located on the protrusion 207 toward the outside from the center of the joining block 202. Provided. The groove portion 217 is provided in the first bonding surface 218 of the end block 212 so as to be recessed inward from the first bonding surface 218 located on the groove portion 217. As a result, when the joining block 202 and the end block 212 are bolt-joined, the projection 207 and the groove 217 are engaged with each other by a step, so that transmission of the shearing force applied to the node structure 200 can be ensured. .

  In the present embodiment, the outer peripheral surface of the joining block 202 protrudes and the first joining surface 218 of the end block 212 is recessed correspondingly, but an opposite configuration may be used. That is, a groove that is recessed toward the inside may be formed on the outer peripheral surface of the joining block 202, and a protrusion that protrudes from the first joining surface 218 of the end block 212 may be provided.

  The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field to which the present invention pertains can come up with various changes or modifications within the scope of the technical idea described in the claims. Of course, it is understood that these also belong to the technical scope of the present invention.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a lattice structure having a lattice shell structure and a construction method thereof, and particularly applicable to a node structure having a curved surface shape or a polygonal shape and a construction method thereof.

DESCRIPTION OF SYMBOLS 1 Structure of lattice shell 10 Beam material 11 End surface 20 Bracing material 100, 200 Nodal structure 102, 202, 302 Joint block 104, 106, 304, 306 Bolt hole 108, 208, 308 Contact surface 112, 212 End Block 113, 213 Second joint surface 114, 116 Bolt hole 118, 218 First joint surface 122, 124 Bolt 132 Upper lid 134 Bolt hole 142, 144, 148 Bracing material pressing plate 143, 145, 149 Through hole 146 Groove 152 Through bolt 207 Projection 217 Groove 372 Washer 374 376 Through hole

Claims (5)

Multiple beams,
A joining member having a cylindrical shape and having a contact surface on the outer surface of the cylindrical shape formed by being separated from the central axis of the cylindrical shape by a predetermined distance;
A first surface that contacts the contact surface of the joint member and is bolted to the joint member; and a second surface that is welded to the beam member, the first surface of the joint member. An end member formed in a shape that uniquely defines an angle of the second surface with respect to the central axis of the joining member when bolted to the contact surface;
The beam material is
The shape of the end portion is processed based on the angle of the second surface of the end member defined when the contact surface of the joining member is bolted and the installation angle of the beam material with respect to the central axis. A node structure of a lattice shell structure having an end surface welded to the second surface.   The node structure of the lattice shell structure according to claim 1, wherein a protrusion is formed on the contact surface, and a groove that engages with an upper portion and a lower portion of the protrusion is formed on the first surface.   2. The node structure of the lattice shell structure according to claim 1, wherein a protrusion is formed on the first surface, and a groove that engages with an upper portion and a lower portion of the protrusion is formed on the contact surface. The joining member has an internal space defined by a cylindrical surface;
A washer having a curved surface along the cylindrical surface of the joining member and a surface in contact with the cylindrical surface; a washer having a planar surface opposite to the surface in contact with the cylindrical surface;
The node structure of the lattice shell structure according to any one of claims 1 to 3, further comprising a bolt that contacts the washer and that bolts the joining member and the end member with the washer interposed therebetween. When the contact surface of the joining member formed on the outer surface of the tubular shape and the first surface of the end member is bolted to each other by a predetermined distance from the cylindrical central axis of the joining member having a tubular shape Determining an angle of the second surface of the end member different from the first surface with respect to the central axis of the joining member;
Determining and processing the shape of the end surface of the beam material to be welded to the second surface based on the angle of the second surface with respect to the central axis and the installation angle of the beam material;
Welding the end face of the beam member and the second face of the end member;
A method for constructing a node structure of a lattice shell structure, comprising: a step of bolting the first surface of the end member and the contact surface of the joining member.

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