JPH0351853B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a support structure for a large-scale structure implemented on artificial land or the like.

Conventionally, when designing a slab, the expected maximum load is determined based on structural calculations assuming that it will act on all positions on the top surface of the slab. By the way, in other specific slabs such as artificial land, the maximum load is quite large, and the positions where the load acts are fixed at two or more places, and there are cases where it is not possible to install a column directly under the position where the load acts. . In the above case, if a slab is designed by the conventional method, most of the slab etc. will have a cross section larger than necessary, resulting in an irrational and wasteful structure, and the position where the load can be applied is restricted. For example, in the case of artificial land, the degree of freedom in plan planning is restricted.

This invention aims to solve the above-mentioned problems and has developed a structure that can support structures on slabs as well as structures on chords. The details will be explained below with reference to illustrated embodiments.

In FIGS. 1 to 4, a slab 1 is constructed on columns 2 and beams 3, and is constructed of a reinforced concrete structure or other suitable structure. The cross section of the slab 1 is designed based on a normal uniformly distributed load.The main bundle material 4 is arranged on the lower surface side of the slab 1 where a large concentrated load P acts at an arbitrary position in the vertical direction. At the bottom of the bundle material 4, there is a tensile strength material 5 made of steel rods, particularly high tensile strength steel bars, high tensile strength strands, etc.
One end is connected, the other end is connected to the end of the peripheral beam 3 located at the corner of the slab 1, and four tensile strength members 5 are connected in an X shape between the end of the beam 3 and the lower part of the bundle material. They are arranged and connected in four directions, transmitting the concentrated load P to the beam 3 through the bundle material 4 and the tensile strength material 5, and are further supported by the slab 1. Since the concentrated load P acts on the slab 1 at multiple locations in many cases, a bundle material and a tensile strength material are provided for each concentrated load.

Depending on the position of the bundle material 4, it may be supported by tensile strength members in three directions, but preferably it is supported in four directions.

In addition to the main bundle material 4, an auxiliary bundle material 4' is arranged on the lower surface side of the slab 1 where the concentrated load P2 acts,
One end of the tensile strength material 5 is connected to the bundle material 4', and the other end is connected to the upper part of the main bundle material 4. Sign A
indicates a structure on the slab.

All of the embodiments described above have the slab 1, but in FIGS. 5 to 7, an upper chord member 6 arranged horizontally or approximately horizontally is used instead of the horizontal member shown in FIGS. This upper chord member 6 may be continuous between opposing columns and beams, but it may also be connected via a bundle member 4 as shown in the figure. This structure can also be applied when horizontal members are made vertical.

Note that the load P' may be applied to the lower surface of the slab 1 in some cases.

The present invention has the above-mentioned configuration, and the main bundle material and the auxiliary bundle material are arranged with tensile strength members in three or more directions to reduce the localized multiple concentrated loads that occur in the slab or the horizontal material such as the upper chord material, at the corner of the slab. Since it is supported by peripheral beam members located at the corners, horizontal members with large spans can be rationally designed, and the number of small beams, columns, etc. can be reduced. Furthermore, by providing the main bundle material and the auxiliary bundle materials, a plurality of load positions can be freely selected, so when the horizontal material is used as artificial land, the plan of the building on the artificial land can be freely planned. Moreover, by arranging the tensile strength member between the lower end of the auxiliary bundle member and the upper part of the main bundle member, the concentrated load can be dispersed and the arrangement of the tensile strength member can be simplified.

Furthermore, by arranging the tensile strength members in different directions, it is possible to prevent the bundle from falling over.

Furthermore, compressive force can be introduced into surrounding members such as beams, which is advantageous when building reinforced concrete structures.
The overall structure can be lightweight.

[Brief explanation of drawings]

1 and 2 are a sectional view and a perspective view of the first embodiment, FIGS. 3 and 4 are a sectional view and a perspective view of the second embodiment, and FIGS. 5 and 6 are a sectional view and a perspective view of the third embodiment. 7th cross-sectional view of
The figure is a perspective view thereof. 1...Slab, 2...Column, 3...Beam, 4,4'
...Bundle material, 5...Tensile strength material, A...Structure.

Claims (1)

[Claims] 1 Arrange the main bundle member and auxiliary bundle member in the area where multiple concentrated loads act on the horizontal members supported by the peripheral beam members, and use the main bundle member to connect each peripheral beam located at the peripheral corner. The main bundle member is supported by tensile strength members arranged in three or more directions between the end of the member and the lower part of the main bundle member, and the auxiliary bundle member is supported by a tensile member arranged between the end of the peripheral beam member and the lower part of the auxiliary bundle member, and A structure support structure characterized in that the structure is supported by a tensile strength member disposed between the upper part of the bundle member and the lower part of the auxiliary bundle member.