JPH06316971A - Roof unit of unit building - Google Patents

Abstract

PURPOSE:To curtail construction cost by using framing materials such as truss construction, etc., and a static load operating section among reinforcing materials for woody materials, and using parts on which two or more loads in different directions among joint sections or dynamic load are acted for shape steel materials. CONSTITUTION:Woody materials are used for ridge beams 2 and main houses 3 on which mainly static load of a roof unit 1 consisting of truss construction, etc., only is acted. After that, unexpected dynamic load is applied to wind beams 4, main beams 5 and principal rafter braces 6, so that shape steel materials are used for every joint section of the ridge beams 2, beams 4 and 5 and braces 6. According to the constitution, excessive strength designs for members and joints parts can be avoided, so that member cost can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof unit in a unit building.

[0002]

2. Description of the Related Art A unit house is known as one of so-called unit buildings (Japanese Patent Laid-Open No. 59-106642).
(See JP-A-60-242238). In the case of this unit house, the roof unit is stacked on top of the box-shaped building unit.

This roof unit is also one of building units, and in consideration of load distribution, a truss structure skeleton is composed of a plurality of linear frame members such as beam members and column members. It is often provided with a structure constructed by attaching a linear reinforcing material.

The loads acting on the building can be roughly classified into static loads and dynamic loads. Of these, static loads due to the weight of the building are easy to calculate in advance at the building design stage.

On the other hand, in the case of a dynamic load due to an earthquake or wind pressure, its calculation is difficult. Also, roof units are industrially produced like other building units and are transported by truck from the factory to the construction site. At this time, the load due to the vibration acting on the roof unit etc. should be regarded as one of the dynamic loads. You can

[0006] These difficult-to-calculate dynamic loads have a great influence on the construction accuracy of a unit house during construction or after construction.

For this reason, in the past, since the structural performance of the unit housing was emphasized so much, it was often the case that the section steel was uniformly used for each frame member and the reinforcing member.

[0008]

However, as described above, the static load and the dynamic load act on the building,
In particular, there is a case where it is not necessary to use a section steel having an excessive strength in the part where the static load acts exclusively, and it is possible to reduce the member cost by adopting a member having a considerable strength according to the acting load. Can be fulfilled

The present invention has been made in view of such a viewpoint, and an object thereof is to provide a roof unit of a unit building which can reduce the cost of members.

[0010]

In order to achieve the above object, the present invention has a skeleton composed of a plurality of frame members,
In a roof unit of a unit building provided with a structure constituted by attaching a plurality of reinforcing members to the skeleton, the frame member and the reinforcing member are mainly wood-based materials on which only static load acts, and At least one of a joint portion between frame members, a joint portion between reinforcing members, and a joint portion between the frame member and the reinforcing member has at least one of two or more loads in different directions or a dynamic load including an impact load. It is characterized in that the portion to be joined is joined by a joining member made of a shaped steel material.

[0011]

In the roof unit of the unit building according to the present invention, the form of the frame member, the reinforcing member and the members used for the joints that constitute the structure are adjusted to the characteristics of the load acting on the members and the joints. , Either wood-based material or shaped steel material. For this reason,
Excessive strength design can be avoided for each member and joint portion, and member cost can be reduced by adopting a member having a considerable strength according to the load.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a roof unit of a unit building according to the present invention will be described below with reference to the drawings.

First, the structure will be described.

In FIG. 1, reference numeral 1 designates a roof unit of a unit building constituted by a plurality of linear frame members as a skeleton with a truss structure.

This roof unit 1 is roughly composed of a waste wood 2 and a purlin 3 which are mainly subjected to only static load, a wind receiving beam 4, a main beam 5 and a joint-bearing braces 6 which are mainly subject to dynamic load. .

Wooden materials are used for the above-mentioned tree 2, ..., Purlin 3 ,. This is because the wood-based material has a stable stress against a static load.

On the other hand, the wind receiving beam 4, the main beam 5 in FIG.
An unpredictable dynamic load may be applied to the palm-bearing braces 6, so that as shown in FIGS. 3 and 4, the wind receiving beams 4, the timbers 2, the palm-bearing braces 6 and the main beams 5 are joined together. Joints J, K (portions on which at least one of dynamic loads including two or more loads in different directions or impact loads)
For this, mold steel materials 11 and 12 are used.

FIG. 5 shows a form of the joint member 21 in the case where a mounting pin is used in the connection of the joint member 21 and another frame member, and shows that the pin mounting hole H is formed. There is.

FIG. 6 shows a joint member 30 having a reinforcing rib 31 instead of the mounting pin.

In the roof unit of such a unit building, the forms of the frame member, the reinforcing member and the members used for the joints which constitute the structure are matched to the characteristics of the load acting on the members and the joints. , Either wood-based material or shaped steel material. For this reason,
Excessive strength design can be avoided for each member and joint portion, and member cost can be reduced by adopting a member having a considerable strength according to the load. By the way, it has been proved that, in the case of unit houses having the same specifications, there is no difference in design strength even if the cost is reduced by about 20%.

The technical scope of the present invention is not limited to the above-described embodiments, but also includes specification changes and the like which those skilled in the art can easily think of. For example, even if the advantage of the unit construction method is adopted as a part of the so-called conventional construction method, that is, the structure in which a joint and a joint are mixed (truss / ramen structure) The present invention can be applied and its effect can be expected sufficiently.

[0022]

As described above, according to the present invention, in the roof unit only, the forms of the frame member, the reinforcing member, and the members used for the joint portion of the structure are By selecting either wood-based material or shaped steel material according to the nature of the load acting on the members and the joints, it is possible to avoid excessive strength design for each member and the joints, depending on the load. By adopting a member having considerable strength, it is possible to reduce the cost of the member.

[Brief description of drawings]

FIG. 1 is a perspective view showing a truss structure of a roof unit.

FIG. 2 is a perspective view of the same target portion.

FIG. 3 is a perspective view showing a joint member that connects the respective members.

FIG. 4 is a perspective view of the same.

FIG. 5 is a perspective view of the same.

FIG. 6 is a perspective view of the same.

[Explanation of symbols]

 1 unit structure, 2, 3, 4, 5 frame material, 6 reinforcement material.

Claims (1)

[Claims] 1. A roof unit of a unit building including a unit structure including a skeleton composed of a plurality of frame members, and a plurality of reinforcing members attached to the frame, wherein: Among them, the one mainly subjected to only static load is a wood-based material, and two or more different directions of the joint portion between the frame members, the joint portion between the reinforcing members and the joint portion between the frame member and the reinforcing member. A roof unit of a unit building, characterized in that at least one of a dynamic load including a load or an impact load is joined by a joining member made of a shaped steel material.