JP4536079B2 - Reinforced structure of multistory parking lot - Google Patents

Description

  The present invention relates to a reinforcing structure for reinforcing a merry-go-round type parking lot.

Merry-go-round type multi-story parking lots are not only made hollow inside, but many of them are simply built around steel frames. In particular, the multilevel parking garage before 1982 had very weak horizontal strength against shaking, and therefore most of them were inferior in earthquake resistance.
The patent literature is not particularly investigated.

On the other hand, the present situation is that there is no reinforcing structure that is simple in structure and excellent in earthquake resistance.
An object of the present invention is to provide a reinforcing structure for a multistory parking lot that has a simple structure and is excellent in earthquake resistance.

  According to a first aspect of the present invention, there is provided a reinforced structure for a multi-story parking garage in which a planar shape is a quadrangular shape or a substantially quadrangular shape, and at least four corners are provided with pillars. A first reinforcing column is erected on the extension, and is a virtual line passing through the center of the existing column and perpendicular to the virtual line, and further a second reinforcement outside the existing column Standing up the supporting pillar, and the existing supporting pillar and the pair of reinforcing supporting pillars constitute the apex of the triangle, while the existing supporting pillar and the reinforcing supporting pillar constituting the apex of the triangle are connected to each other through a connecting beam member. The main beam members for reinforcement are bridged between the reinforcing columns facing each other, and the main beam members for reinforcement are connected to the existing floor structure via the horizontal braces for reinforcement. Has characteristics .

According to a second aspect of the present invention, a plurality of reinforcing horizontal braces are provided in a zigzag shape between reinforcing struts facing each other, one of the reinforcing horizontal braces is fixed to the reinforcing main beam member, and the other is It is characterized by being fixed to the floor structure.
According to a third aspect of the invention, the first and second reinforcing columns are associated with each of the four existing columns provided at the four corners, and the reinforcing main beam member is bridged between the reinforcing columns facing each other. It has the feature in the point.

According to the first invention, a pair of reinforcing struts are provided in association with the existing struts, and the triangular structure is configured between the reinforcing struts and the existing struts. Regardless of the direction of shaking, the acting force on the existing strut can be dispersed. In such a situation, the existing pillar and the reinforcing pillar constitute three pillars, so that the strength of the pillar structure at the corner in the multi-story parking lot is dramatically improved.
Further, the strength of the column structure is improved as described above, and the horizontal horizontal brace is interposed between the column structures, so that the horizontal strength of the floor structure can be dramatically improved. Thus, the greater the horizontal proof stress of the floor structure, the greater the floor rigidity, and the greater the earthquake resistance.

According to the second invention, a plurality of reinforcing horizontal braces are provided in a zigzag shape between the reinforcing columns facing each other, one of the reinforcing horizontal braces is fixed to the reinforcing main beam member, and the other is Since it fixed to the existing floor structure, a triangular structure will continue in plane between reinforcement support | pillars. Therefore, the horizontal proof stress of the floor structure is further increased, and further improvement in seismic performance can be expected.
According to the third invention, since the entire multistory parking lot is surrounded by the reinforcing structure, the seismic performance can be further improved.

1-3 which show 1st Embodiment show the state which enclosed the lower side part of the existing merry-go-round type multistory parking lot C with the reinforcement structure of this invention. That is, this existing multistory parking lot C is 10 stories in the drawing, and up to the third floor part is surrounded by the reinforcing structure R.
The multistory parking lot C is configured such that the pillars 1a to 1d made of H-shaped steel stand up at the four corners, and the main beam member 2 is spanned between the pillars 1a to 1d facing each other to form a floor structure on each floor. I have to. Note that reference numeral 3 in the figure denotes an existing vertical brace spanned between the main beam members 2.

  The reinforcing structure R associates two reinforcing columns 4 and 5 made of round steel with each of the existing columns 1a to 1d. The first reinforcing column 4 among the reinforcing columns is an imaginary line L1 connecting the centers of two existing columns 1a and 1d, 1b and 1c facing each other, as shown in FIGS. Standing on the extension of. Further, the second reinforcing column 5 is erected on an extension of an imaginary line L2 connecting the centers of the two existing columns 1a and 1b, 1c and 1d. That is, the second reinforcing column 5 is an imaginary line L2 that passes through the center of the existing columns 1a to 1d and is orthogonal to the imaginary line L1, and is erected outward from the existing column.

  By associating the two reinforcing columns 4 and 5 with each of the existing columns 1a to 1d as described above, the existing columns 1a to 1d and the pair of reinforcing columns 4 and 5 form a triangular vertex. It has a relationship to make up. Further, by connecting the vertices of the triangles via the connecting beam member 6, a triangular structure is formed. The connecting beam member 6 has a pair of pairs as shown in FIG. It consists of leg pieces 6a and 6b and a slant piece 6c that connects these leg pieces 6a and 6b. And the front-end | tip of the said leg pieces 6a and 6b is being fixed to the said existing support | pillar 1a-1d which consists of H type steel by welding.

The connecting beam member 6 fixed to the existing struts 1a to 1d as described above constitutes an isosceles triangle having the existing struts 1a to 1d as apexes, and this isosceles triangle is the triangular structure of the present invention. It turns out that.
Further, the connecting beam members 6 forming an isosceles triangle having the existing struts 1a to 1d as vertices are connected to the reinforcing main beam members 7 at both ends thereof, and are connected to each other via the reinforcing main beam members 7. Opposing connecting beam members 6 are connected. As shown in FIG. 2, the reinforcing main beam member 7 connected in this manner is assembled in parallel with the existing main beam member 2 at substantially the same level.

After the reinforcing main beam member 7 is stretched around the multi-story parking lot as described above, next, as shown in FIG. 3, first, the reinforcing horizontal beam parallel to the slanted piece 6c of the connecting beam member 6 is used. The brace 8 is caused to cross a corner portion formed by the existing main beam member 2 and the reinforcing horizontal brace 8 is fixed to the main beam member 2 and the reinforcing main beam member 7. Then, starting from both ends of the reinforcing main beam member 7, another reinforcing horizontal brace 9 is provided in a zigzag shape, and one end of the reinforcing horizontal brace 9 is provided for reinforcement. It is fixed to the main beam member 7 and the other end is fixed to the main beam member 2 constituting the floor structure.
In addition, the code | symbol 10 in a figure is a vertical brace for reinforcement.

  As described above, the connecting beam member 6, the reinforcing main beam member 7, and the reinforcing horizontal braces 8, 9 are supported by the existing supporting columns 1a to 1d and the reinforcing columns 4 and 5 provided in association therewith, As shown in FIG. 2, a planar continuous triangular structure is formed around the existing multistory parking lot C by the connecting beam member 6, the reinforcing main beam member 7 and the reinforcing horizontal braces 8 and 9. Therefore, even if horizontal force acts from any direction, the force can be evenly distributed, and the floor rigidity of the multistory parking lot C can be dramatically improved. become.

  In the above embodiment, the lower portion of the existing parking lot C, that is, the portion from the bottom to the third floor as shown in FIG. 1 is reinforced by the reinforcing structure R. However, if necessary, the reinforcing structure Of course, the R portion may be increased or decreased.

Also, good sea urchin of the second embodiment shown in FIG. 4, in the case of the two wings of the type concatenated parking structure C1, C2, the structure of the corner portion of the outer, in the case of FIGS. 1 to 3 Same as. However, only the reinforcing horizontal brace 8 is used in the connecting portions of the compatible-body parking lots C1 and C2 without using the connecting beam member 6. That is, the reinforcing horizontal brace 8 is hung over each of the corners of the connecting portions of the multistory parking lots C1 and C2.

It is a perspective view which shows the three-dimensional structure of 1st Embodiment. It is a top view of the reinforcement structure of a 1st embodiment. It is an enlarged plan view of the principal part of 1st Embodiment. It is a top view of a 2nd embodiment .

Explanation of symbols

1a~1d existing strut 4 first reinforcing strut 5 second reinforcement strut 6 connecting the beam member 7 reinforcing main beam member 8 reinforcing horizontal braces 9 reinforcing horizontal brace

Claims (3)

  In the reinforcement structure of a multilevel parking garage in which the planar shape is a quadrangular shape or a substantially quadrangular shape, and at least four corners are provided with pillars, the first on the extension of the imaginary line connecting at least two existing pillars facing each other. Standing up the reinforcing struts and imaginary lines passing through the center of the existing struts and perpendicular to the imaginary line, and standing up the second reinforcing struts further outside the existing struts, The existing strut and the pair of reinforcing struts form a triangular apex, while the existing struts and reinforcing struts constituting the triangular apex are formed as a triangular structure via a connecting beam member, and A reinforcing structure for a multi-story parking garage in which reinforcing main beam members are bridged between reinforcing struts facing each other, and these reinforcing main beam members are connected to an existing floor structure through reinforcing horizontal braces. .   A plurality of reinforcing horizontal braces are provided in a zigzag shape between the reinforcing columns facing each other, and one of the reinforcing horizontal braces is fixed to the reinforcing main beam member, and the other is fixed to the existing floor structure. 2. The structure for reinforcing a multi-story parking lot according to claim 1.   The first or second reinforcing column is associated with each of the four existing columns provided at the four corners, and the reinforcing main beam member is spanned between the reinforcing columns facing each other. Reinforcement structure of multistory parking lot according to 2.

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