JP2611057B2 - How to build a building - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a building having no middle pillar on the lowest floor.

[0002]

2. Description of the Related Art Conventionally, buildings, such as buildings, which are constructed over railway tracks or roads, for example,
As shown in FIG. 3, a truss 2 is provided between the upper ends of the left and right pillars 1, and a building skeleton composed of the pillars 3 and the beams 4 of each floor is constructed on the truss 2.

[0003]

In a building having a skeleton as shown in FIG. 3, a truss 2 is provided between upper ends of left and right pillars 1, and this truss bears a vertical load of a beam. Thus, as the span of the truss increases, a large bending moment is generated in the pedestal 1 and therefore a large-diameter pedestal 1 and a large-scale foundation are absolutely necessary.

A truss structure having a large span as described above is intended for effective use of land and advanced use.
There is not enough space around railway tracks or roads or other unused land to build large span truss structures, thus providing large diameter pillars and large foundations on narrow land In particular, it was economically difficult to increase the size of the pillars and foundations.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and a first gist of the present invention is to provide a building having no middle pillar on the lowest floor. In the construction method, a building has a truss structure on the upper floor of the building, and a diagonal material is attached from the joint between the left and right main pillars and the intermediate floor beams to the lowest floor beam.

A second feature of the present invention is as follows.
In a building without an intermediate pillar on the lowest floor, the floor immediately below the upper floor of the building has a truss structure, and the lowermost floor beam starts from the junction between the left and right main pillars and each intermediate floor beam. In the construction method of the building where the diagonal material is attached to each.

[0007]

According to the first aspect of the method of the present invention, by attaching a diagonal member from the joint between the left and right main pillars and each intermediate story beam to the lowermost story beam, each intermediate story beam and The downward force of the lower story beam flows as an axial force to the main column through the diagonal material, and the deflection of each intermediate story beam and the lowest story beam is restrained by the diagonal material. The bending moment of the lower main beam can be reduced, and the bending of the left and right main columns is restrained by the rigid truss structure of the upper floor, so the bending moment of the left and right main columns is negligibly small, Therefore, since the left and right main pillars are designed by the axial force, a large span building can be easily and economically constructed by the relatively small diameter left and right main pillars and the relatively small foundation.

[0008] As a second aspect of the method of the present invention,
By attaching diagonal members from the junction between the main column on the left and right and each intermediate floor beam to the lowermost floor beam, the downward force of each intermediate floor beam and lowermost floor beam is mainly transmitted through the diagonal members. Since it flows as an axial force to the column and the deflection of each intermediate floor beam and the lowest floor beam is restrained by the diagonal material, the bending moment of each intermediate floor beam and the lowest floor beam can be reduced,
In addition, the bending of the left and right main columns is constrained by the rigid truss structure on the floor directly below the upper floor, so the bending moments of the left and right main columns are negligibly small, and therefore the left and right main columns have an axial force. With a relatively small diameter left and right main pillars and a relatively small foundation, a large span building can be easily and economically constructed.
On the upper floor, you can secure a large space that is advantageous for the view.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the method of the present invention will be described with reference to FIG. 1. In a building 11 in which an intermediate pillar is not provided on the lowest floor, the upper floor of this building 11, for example, the uppermost floor is trussed. A diagonal member 16 is attached from the joint between the left and right main pillars 13 and the intermediate story beams 14 to the lowermost story beam 15 to construct a building skeleton.

A second embodiment of the method of the present invention will be described with reference to FIG. 2. In a building 11 in which no middle pillar is provided on the lowermost floor, an upper floor of the building 11, for example, immediately below the uppermost floor, is used. The tier structure is a truss structure 12, and diagonal members 16 are attached from the joint between the main columns 13 on the left and right sides and the respective middle tier beams 14 to the lower tier beams 15 to construct the framework of the building.

[0011]

According to the first aspect of the method of the present invention, each intermediate floor beam is attached by attaching a diagonal member from the joint between the left and right main pillars and each intermediate floor beam to the lowest floor beam. And the downward force of the lower story beam flows as an axial force to the main column through the diagonal material, and the deflection of each intermediate story beam and the lowermost story beam is restrained by the diagonal material. The bending moment of the bottom floor beam can be reduced, and the bending of the left and right main columns is restrained by the strong truss structure of the upper floor, so the bending moment of the left and right main columns is negligibly small. Therefore, since the left and right main pillars are designed by axial force, a large span building can be easily and economically constructed with relatively small diameter left and right main pillars and a relatively small foundation. .

Also, as in the second aspect of the method of the present invention, by attaching a diagonal member from the joint between the left and right main pillars and each intermediate story beam to the lowermost story beam, each intermediate story beam and The downward force of the lower story beam flows as an axial force to the main column through the diagonal material, and the deflection of each intermediate story beam and the lowest story beam is restrained by the diagonal material. The bending moment of the lower main beam can be reduced, and the bending of the left and right main columns is constrained by the rigid truss structure of the lower floor immediately below the upper floor, so the bending moment of the left and right main columns is ignored Since the main columns on the left and right sides are designed by axial force as small as possible, relatively small diameter left and right main columns and relatively small foundations make it easy and economical to construct a large span building. On the upper floors and on the view The space can be assured of a wide space such. The method of the present invention can be applied to a building constructed above a river, an existing building, or an artificial marine ground.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment of the method of the present invention.

FIG. 2 is a front view showing a second embodiment of the method of the present invention.

FIG. 3 is a front view showing a conventional method.

[Explanation of symbols]

 11 Building without middle pillars 12 Truss structure 13 Main pillar on left and right 14 Each middle story beam 15 Bottom story beam 16 Diagonal material

Claims (3)

(57) [Claims] In a building where no middle pillar is provided on the lowest floor, the upper floor of the building has a truss structure, and a lower floor is formed from a joint between the left and right main pillars and the respective middle floor beams. A method of building a building, characterized by attaching diagonal members over beams. 2. In a building having no middle pillar on the lowest floor, a truss structure is used for the floor immediately below the upper floor of the building, and a joint between the left and right main pillars and each middle floor beam. A method of constructing a building, characterized in that diagonal members are attached to the lowermost beams from the first floor. 3. The building construction method according to claim 1, wherein the upper floor is a top floor.