JPH01322043A - Roof frame of collected material beam - Google Patents

Abstract

PURPOSE:To integrate members and obtain a rigid structure and construct an economical and stable frame by forming a fylfot-shaped frame unit by using the collected material beams having an equal length and assembling the frame units. CONSTITUTION:A frame unit (a) which is constituted of the collected material beams 1 having an equal length has a fylfot-shaped form by butting the edge parts of the collected material beams 1 which has a length ranging between three continuous nodes of a roof frame A and crosses with the collected material beam 1 at the intermediate part of the collected material beam 1 in one direc tion, and constitutes the fundamental pattern of the roof frame A. A small beam 2 forming a network is abutted at each node of the frame unit (a) of the fundamental pattern which is assembled into a rectangular or triangular form, and a side beam 3 is installed on the periphery of the frame unit (a), and the roof frame A is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a roof frame made of laminated timber beams constructed by constructing laminated timber beams in a mesh pattern.

[Problem to be solved by the invention]

Generally, the form of a lattice-like roof frame made of laminated timber is constructed by constructing large beams that are continuously constructed in one direction with small beams intersecting each other.
These can be divided into two types: one is a frame constructed by straddling the girders, and the other is a frame constructed by assembling beams with the distance between adjacent nodes at a node.

However, in the former case, the lengths of the large and small beams are extremely different, resulting in uneven stress distribution and the cross-sections of the members cannot be unified, while in the latter case, although the cross-sections and lengths of the members can be unified,
Each method has its own weaknesses, such as using pins at the nodes to make the frame unstable, making it difficult to make it rigid because it involves a large number of members, and being uneconomical due to the large number of nodes.

This invention was made based on this background, and aims to propose a new frame that unifies members and can be easily made into rigid joints.

[Means to solve the problem]

In the present invention, in a frame assembled in a net shape, the ends of the glulam beams of the same length intersecting the glulam beams are butted in the middle of the glulam beams having a length spanning between three consecutive nodes to form a tomoe shape. By forming a frame unit and combining these frame units, it is possible to unify the members and make them rigid.

The node of the frame constituted by the combination of frame units is located in the middle of the laminated timber bundle in one direction, and only the two laminated timber bundles facing each other with the one-directional laminated timber bundle in between gather at this node. It becomes easy to rigidly join two intersecting laminated timber bundles to a one-way laminated timber bundle.

〔Example〕

The present invention will be explained below based on the drawings showing one embodiment.

As shown in FIG. 1, the roof frame A of the present invention is constructed in a mesh shape from frame units a made up of laminated timber bundles 1 of the same length assembled in a toe-like shape.

As shown in Fig. 2, the frame unit a has a length extending between three consecutive nodes of the roof frame A (mesh), and is located in the middle of a unidirectional glulam bundle 1, and has a glulam bundle 1 that intersects with the glulam bundle 1. The ends are butted together to form a tomoe shape as shown in the figure, and constitute the basic pattern of the roof frame A.

Fig. 2 Fig. 3 shows an example of the construction of the roof frame A, which has the simplest structure, and a mesh is formed at each node of the basic pattern of the frame unit a, which is constructed in a rectangular shape and a triangular shape, respectively. While butting the small beams 2 together, frame unit a
A roof frame A is constructed by erecting side beams 3 around the roof.

Figures 4 and 5 show an example in which the embodiment shown in Figure 2 is expanded, and frame units a are connected in two directions within the plane and combined to form a large-span roof frame A. It is.

In this case as well, the small beams 2 and side beams 3 are arranged around it as shown.

Figure 6 shows an example of joining the joints of the nodes of the roof frame A, that is, the intersecting glulam beams 1 and 1, but the joints are the glulam beams 1 that continue in one direction as shown in the figure. and the laminated timber bundle 1.1 facing each other with this in between.

The illustrated embodiment is a joining example in which the joint part is made into a rigid joint, but the joint part is embedded in the continuous laminated timber bundle 1 and the opposing laminated timber bundles 1 and 1, respectively, as shown in the figure. Butt the joining hardware 4.4 together, and insert the plate 5 between both joining hardware 4.4.
A rigid connection is achieved by straddling the poles and tightening poles 1 to 6.

In the connection example shown in Fig. 7, steel rods 7, 7 are embedded in the laminated timber beams 1, 1 instead of the joining hardware 4.4, and these are connected with a coupler 8, and the connection part is covered with concrete 9, etc. This is the same case where the joint part is made into a rigid joint.

〔Effect of the invention〕

This invention is as described above, and since the basic pattern is a laminated timber bundle assembled in a tomoe shape and the beam structure is constructed by combining these, the length and cross-sectional dimensions of the used laminated timber bundles are unified. Moreover, since there are few members gathered at the nodes, it is possible to easily make them into rigid joints, making it possible to construct an economical and stable frame.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram showing an example of assembling a frame unit, Figures 2 and 3 are examples of building a simple frame, where ■ is a plan view, ■ is a cross-sectional view, and Figure 4 is a diagram showing an example of how to assemble a frame unit. 5 Figure 5 shows an example of construction of a large span frame, where I is a plan view and ■
6 and 7 show examples of joints of nodes, and in each case, ■ is a plan view, and ■ is a cross-sectional view. A: roof frame, a: frame unit, 1: laminated timber bundle, 2: small beam, 3:
...Side beam, 4...Joint hardware, 5...
...Plate, 6...Bolt, 7...
Steel rod, 8...Coupler, 9...Concrete.

Claims (1)

[Claims] (1) A roof frame constructed by intersecting glulam beams in the same plane in a mesh pattern, with the same beam intersecting the glulam beams having a length extending between three consecutive nodes of the mesh. A roof frame made of laminated timber beams, which is made by combining tomoe-shaped structural units formed by butting the ends of long laminated timber beams together.