JP3761882B2 - Floor panel support structure - Google Patents

Description

  The present invention relates to a support structure for supporting a metal or concrete floor panel on an H-shaped steel beam in a steel structure building.

  As for the conventional support structure of the floor panel, publicly known documents cannot be specifically mentioned. However, as shown in FIG. 5 (a), upper and lower flange portions 3 and 4 having the same width are provided at the upper and lower end portions of the web 2, respectively. The end of a concrete (or metal) floor panel 4 is placed on and supported by the upper flange portion 3 of the beam 1 made of H-shaped steel. It is fixed to the upper flange 3 with a dedicated fixing bracket, bolts and nuts.

  According to the floor panel support structure as described above, as can be seen from FIG. 5 (b), when the column 5 (made of H-shaped steel, square steel, etc.) stands on the H-shaped steel beam 1. Since the corner of the floor panel 4 interferes with the pillar 5, it is necessary to cut out the corner of the floor panel 4 (the notch is indicated by CP), and the floor panel 4 is made of concrete or metal. Therefore, the notch work is very difficult and the workability is lowered.

  In addition, in order to improve the sound insulation performance of the floor panel support structure, it is generally known to increase the weight of the floor panel and increase the rigidity of the steel beam, but when the weight of the floor panel is made constant, It is necessary to increase the rigidity of the steel beam by changing the beam size such as increasing the beam back or increasing the flange width. However, in prefabricated houses, changing the beam size is actually impossible due to the large impact on other parts of the building.

  In view of the above problems, the present invention eliminates the need to cut out a floor panel even if a column stands on the H-shaped steel beam, and increases the rigidity of the steel beam without affecting other parts of the building. An object of the present invention is to provide a floor panel support structure capable of improving the sound insulation performance.

  The floor panel support structure of the invention according to claim 1 is such that the upper flange portion 8 has the same width as that of the existing H-shaped steel beam 1 on the upper and lower flange portions 3, 4 and the existing H-shaped steel beam 1. The other H-shaped steel beams 1 that are substantially the same as the widths of the flange portions 3 and 4 and project on both sides or one side so that the lower flange portion 9 is wider than the upper flange portion 8 are placed. The upper flange portion 3 and the lower flange portion 9 of the separate H-shaped steel beam 6 are integrally connected, and the thickness corresponding to the height from the upper surface of the lower flange portion 9 to the upper surface of the upper flange portion 8 of the separate H-shaped steel beam 6 The end of the floor panel 4 having t is supported by the upper surface of the wide protrusion 9o of the lower flange 9 of the other H-shaped steel beam 6.

  According to a second aspect of the present invention, in the floor panel support structure according to the first aspect, the upper flange portion 3 of the existing H-shaped steel beam 1 and the lower flange portion 9 of the other H-shaped steel beam 6 are integrated by a bolt 10 and a nut 11. It is characterized by the fact that they are connected together.

  According to claim 3, in the floor panel support structure according to claim 1, the upper flange portion 3 of the existing H-shaped steel beam 1 and the lower flange portion 9 of the other H-shaped steel beam 6 are integrally connected by welding. It is characterized by doing so.

  According to a fourth aspect of the present invention, in the floor panel support structure according to any one of the first to third aspects, between the upper flange portion 3 of the existing H-shaped steel beam 1 and the lower flange portion 9 of the other H-shaped steel beam 6. A vibration shock absorbing member 12 is interposed between an upper flange portion 3 of the beam 1 and a lower flange portion 9 of another H-shaped steel beam 6 with a fireproof heat insulating member interposed therebetween.

A fifth aspect of the present invention provides the floor panel support structure according to any one of the first to third aspects, wherein the gap between the upper flange portion 3 of the existing H-shaped steel beam 1 and the lower flange portion 9 of the other H-shaped steel beam 6 is provided. It is characterized by interposing a fireproof heat insulating member.

  A sixth aspect of the present invention provides the floor panel support structure according to any one of the first to third aspects, wherein between the upper flange portion 3 of the existing H-shaped steel beam 1 and the lower flange portion 9 of the other H-shaped steel beam 6. The vibration shock absorbing member 12 and the fireproof heat insulating member are interposed.

  According to the floor panel support structure of the first aspect of the present invention, when the floor panel is mounted, even if a column is erected on the upper flange portion of the other H-shaped steel beam, the floor panel as in the conventional floor panel structure is provided. It is not necessary to cut out a part of the wall, and the work for the cut-out becomes unnecessary, and the efficiency of the floor panel mounting and laying work is greatly improved. In addition, the other H-shaped steel beam is only mounted on the upper surface of the upper flange portion of the existing H-shaped steel beam and fixed, and its both end portions are not supported or connected to a column or foundation, Since both ends of the existing H-shaped steel beam are supported by or connected to a pillar or base, other parts are affected by attaching another H-shaped steel beam on the existing H-shaped steel beam. There is nothing. Thus, another H-shaped steel beam is placed on the upper surface of the upper flange portion of the existing H-shaped steel beam 1, and the upper flange portion of the existing H-shaped steel beam and the lower flange portion of the other H-shaped steel beam are integrally formed. By connecting, the rigidity of the steel beam can be increased, and thereby the sound insulation performance of the entire floor can be improved.

  Further, the floor panel has a thickness corresponding to the height from the upper surface of the lower flange portion of the other H-shaped steel beam to the upper surface of the upper flange portion, and the upper surface of the floor panel and the upper flange of the other H-shaped steel beam. The upper surface of the part is flush with the other, and the gap between the upper flange of the existing H-shaped steel beam and the floor panel can be reduced, so that sound insulation performance is further improved, fire resistance performance is improved, and fire resistance measures are taken. Is also easy.

  According to the floor panel support structure of the invention according to claim 2, when the upper flange portion of the existing H-shaped steel beam and the lower flange portion of the deformed H-shaped steel beam are integrally connected by bolts and nuts, Since it is only necessary to drill bolt insertion holes in the upper flange part of the existing H-shaped steel beam 1 and the lower flange part of the other H-shaped steel beam at regular intervals, insert the bolts, and tighten them with nuts. It will be easy.

  According to the floor panel support structure of the invention of claim 3, when the upper flange portion of the existing H-shaped steel beam and the lower flange portion of the deformed H-shaped steel beam are integrally connected by welding, Thus, the upper flange portion of the existing H-shaped steel beam and the lower flange portion of the other H-shaped steel beam can be semi-permanently connected integrally.

  According to the floor panel support structure of the invention of claim 4, the vibration shock absorbing member is interposed between the upper flange portion of the existing H-shaped steel beam and the lower flange portion of the other H-shaped steel beam. The vibration and shock generated on the panel can be absorbed by the vibration shock absorbing member, and the vibration and shock propagation to the lower floor can be prevented as much as possible, and the vibration and sound insulation performance can be greatly improved.

  According to the floor panel support structure of the invention according to claim 5, the fireproof heat insulating member is interposed between the upper flange portion of the existing H-shaped steel beam and the lower flange portion of the other H-shaped steel beam. The fireproof insulation performance between the shaped steel beam and another H-shaped steel beam is improved.

  According to the floor panel support structure of the invention of claim 6, the vibration shock absorbing member and the fireproof heat insulating member are interposed between the upper flange portion of the existing H-shaped steel beam and the lower flange portion of the other H-shaped steel beam. By absorbing vibrations and shocks generated on the floor panel with this vibration shock absorbing member, the vibration and shock propagation to the lower floor can be prevented as much as possible, and the vibration and sound insulation performance can be greatly improved. The fireproof and heat insulating performance between the existing H-shaped steel beam and another H-shaped steel beam can be improved.

  FIG. 1A is a cross-sectional view of a floor panel support structure according to an embodiment of the present invention, and FIG. 1B is a plan view of the floor panel support structure. In this floor panel support structure, the upper flange portion 3, 4 has the same width a on the existing H-shaped steel beam 1 and the upper flange portion 8 has a width of the flange portion 3 of the existing H-shaped steel beam 1. 4, another H-shaped steel beam 6 projecting on both sides is mounted so that the width b of the lower flange portion 9 is wider than the width a of the upper flange portion 8 by the required amount. The upper flange portion 3 of the steel beam 1 and the lower flange portion 9 of the separate H-shaped steel beam 6 are integrally connected, and thus the upper flange portion 8 The end of the floor panel 4 having a thickness t corresponding to the height to the upper surface is supported by the upper surface of the wide protrusion 9o of the lower flange portion 9 of the other H-shaped steel beam 6. In addition, in embodiment shown in FIGS. 1-3, although the wide protrusion part 9o of the lower flange part 9 of another H-shaped steel beam 6 has the structure protruded on the both sides of the lower flange part 9, the wall side of a building In the case of another H-shaped steel beam 6 used for the above, the wide protrusion 9o is formed so as to protrude only on one side of the lower flange 9 as shown in FIG.

  Another H-shaped steel beam 6 is formed by integrally forming upper and lower flange portions 8 and 9 at both upper and lower end portions of the web 7, and the width a of the upper flange portion 8 is the flange of the existing H-shaped steel beam 1 as described above. The width b of the lower flange portion 9 is formed so as to be larger than the width a of the upper flange portion 8 by the same width a as the portions 3 and 4, and the height h is, for example, that of the existing H-shaped steel beam 1 The height is 1/2 of 2h. This separate H-shaped steel beam 6 is only mounted on the upper surface of the upper flange portion 3 of the existing H-shaped steel beam 1 and fixed, and both end portions are not supported or connected to a pillar or a base. . It is the existing H-shaped steel beam 1 that is supported by or connected to a pillar, foundation, or the like. In addition, even if the width of the upper flange part 8 is not exactly the same as the width a of the flange parts 3 and 4 of the existing H-shaped steel beam 1, the other H-shaped steel beam 6 may be almost the same.

Further, the upper flange portion 3 of the existing H-shaped steel beam 1 and the lower flange portion 9 of the other H-shaped steel beam 6 are usually integrally formed by bolts 10 and nuts 11 as shown in FIG. Connected. The connection between the upper flange portion 3 of the existing H-shaped steel beam 1 and the lower flange portion 9 of the other H-shaped steel beam 6 may be performed by welding. In the case of connection with bolts 10 and nuts 11, bolt insertion holes are provided at regular intervals in the upper flange portion 3 of the existing H-shaped steel beam 1 and the lower flange portion 9 of another H-shaped steel beam 6. Since 10 may be inserted and tightened with the nut 11, the connecting operation is simplified. The connecting work with the bolt 10 and the nut 11 is performed at the construction site, but the drilling of the bolt insertion hole is performed at the factory. The connecting work by welding is in principle performed at the factory, but can also be performed at the construction site. In the case of welding, it takes time for welding work, but there is no risk of loosening like bolts 10 and nuts 11, and the upper flange part 3 of the existing H-shaped steel beam 1 and the lower flange part 9 of another H-shaped steel beam 6 Can be joined together in a semi-permanent manner.

  The floor panel 4 may be entirely formed of concrete, or may be a box-shaped panel body formed of steel plate filled with ready-mixed concrete, cellular concrete, or the like. In any case, the floor panel 4 has a thickness t corresponding to the height from the upper surface of the lower flange portion 9 of the other H-shaped steel beam 6 to the upper surface of the upper flange portion 8. In other words, in the other H-shaped steel beam 6, the height from the upper surface of the lower flange portion 9 to the upper surface of the upper flange portion 8 corresponds to the thickness t of the floor panel 4.

  Thus, the floor panel 4 is supported by placing both ends of the floor panel 4 on the upper surface of the wide protrusion 9o of the lower flange 9 of the other H-shaped steel beam 6 as shown in FIG. Fix to the lower flange 9 with metal fittings, bolts and nuts. 4A specifically shows the case where the end of the floor panel 4 is bolted to the wide protrusion 9o of the lower flange 9 of the other H-shaped steel beam 6. FIG.

  According to the support structure of the floor panel 4 as described above, when the floor panel 4 is attached, as shown in FIG. 1 (b), the column 5 (H-shaped steel is provided on the upper flange portion 8 of the other H-shaped steel beam 6. 4), it is not necessary to cut out a part of the floor panel 4 as in the conventional floor panel structure shown in FIGS. 4 (a) and 4 (b). The work for notching becomes unnecessary, and the efficiency of the installation and laying work of the floor panel 4 is greatly improved.

  When the column 5 is erected on the upper flange portion 8 of another H-shaped steel beam 6, the column 5 is directly erected on the upper surface of the upper flange portion 8 of the other H-shaped steel beam 6 as shown in FIG. Alternatively, as shown in (b) of the figure, another H-shaped steel beam 6 is cut out by an amount corresponding to the width of the column 5 (the cut portion is indicated by 15), and the existing H-shaped steel beam is cut. The column 5 may be erected on the upper surface of the upper flange portion 3.

  Further, in the support structure of the floor panel 4, the separate H-shaped steel beam 6 is simply mounted on the upper surface of the upper flange portion 3 of the existing H-shaped steel beam 1 and fixed at both ends. Since both ends of the existing H-shaped steel beam 1 are supported by or connected to a pillar or a base without being supported or connected to the base, the existing H-shaped steel beam 1 By attaching another H-shaped steel beam 6 on top, other parts are not affected. Thus, another H-shaped steel beam 6 is placed on the upper surface of the upper flange portion 3 of the existing H-shaped steel beam 1, and the upper flange portion of the existing H-shaped steel beam 1 and the lower flange portion 9 of the other H-shaped steel beam 6. Are integrally connected to each other, so that the rigidity of the steel beam can be increased, thereby improving the sound insulation performance of the entire floor.

  Further, the floor panel 4 has a thickness t corresponding to the height from the upper surface of the lower flange portion 9 to the upper surface of the upper flange portion 8 of the separate H-shaped steel beam 6, in other words, the separate H-shaped steel beam. 6 indicates that the height from the upper surface of the lower flange portion 9 to the upper surface of the upper flange portion 8 corresponds to the thickness t of the floor panel 4, and the upper flange portion of the other H-shaped steel beam 6 and the upper surface of the floor panel 4. 8 Since the upper surface is flush with the upper flange 8 of the existing H-shaped steel beam 1 and the floor panel 4 can be reduced, there is no cavity on the beam and the sound insulation performance is further improved. At the same time, the fireproof performance is improved, and fireproofing measures become easy.

  FIG. 3 shows a support structure similar to the support structure of the floor panel 4 shown in FIGS. 1 and 2, except that the upper flange portion 3 of the existing H-shaped steel beam 1 and the lower flange portion 9 of another H-shaped steel beam 6. 1 shows a support structure of a floor panel 4 with a vibration shock absorbing member 12 made of a viscoelastic polymer material interposed between them, (a) is a cross-sectional view of the support structure, and (b) is an exploded cross section. FIG. Except for the point that the vibration shock absorbing member 12 is interposed between the upper flange portion 3 of the existing H-shaped steel beam 1 and the lower flange portion 9 of the other H-shaped steel beam 6, the floor panel 4 shown in FIGS. Since this is the same as the support structure, the vibration shock absorbing member 12 will be described below.

  The vibration shock absorbing member 12 is an ultra-soft elastomer that is made of a viscoelastic polymer material mainly composed of silicon and has an ultra-low hardness near gel body excellent in vibration absorption and shock absorption, and also has durability. It is. The vibration shock absorbing member 12 is usually a continuous sheet having a required width, and is used by cutting it according to the length of the beams 1 and 6. As the vibration shock absorbing member 12, for example, the one sold by Geltech Co., Ltd. under the registered trademark name “αGEL” or the one sold by Polysys Co., Ltd. under the trade name “Hapragel” is used. can do. The vibration shock absorbing member 12 made of this viscoelastic polymer material exhibits an excellent effect in absorbing vibrations and shocks, and has a resonance point and a resonance magnification as compared with a conventional high-performance vibration-proof rubber. It has excellent anti-vibration performance with low vibration damping time. The vibration shock absorbing member 12 is not limited to the viscoelastic polymer material as described above, and any other suitable material can be used.

  The vibration generated on the floor panel 4 by interposing the vibration shock absorbing member 12 as described above between the upper flange portion 3 of the existing H-shaped steel beam 1 and the lower flange portion 9 of the other H-shaped steel beam 6. And vibrations are absorbed by the vibration shock absorbing member 12, and vibration and shock propagation to the lower floor side are prevented as much as possible, and the vibration and sound insulation performance can be greatly improved.

  Further, between the upper flange portion 3 of the existing H-shaped steel beam 1 and the lower flange portion 9 of the other H-shaped steel beam 6, instead of the vibration shock absorbing member 12, a sheet material such as rock wool or ceramic wool is used. It is also possible to interpose a fire-resistant and heat-insulating member (not shown) made of this, thereby improving the fire-resistant and heat-insulating performance between the existing H-shaped steel beam and another H-shaped steel beam, and by doing so, the existing H-shaped The vibration shock absorbing member 12 and the refractory heat insulating member may be interposed between the upper flange portion 3 of the steel beam 1 and the lower flange portion 9 of the other H-shaped steel beam 6. In addition, the vibration and shock generated on the floor panel 4 are absorbed by the vibration shock absorbing member 12, and the vibration and shock propagation to the lower floor side is prevented as much as possible, and the vibration and sound insulation performance can be greatly improved. Between the existing H-shaped steel beam 1 and another H-shaped steel beam 6 Definitive fireproof insulation performance can be improved.

  FIG. 4A shows a case where the end of the floor panel 4 is placed on the upper surface of the wide protrusion 9o of the lower flange 9 of the other H-shaped steel beam 6 and then the end of the floor panel 4 is bolted. Specifically, it shows a case where a floor panel 4 comprising a hollow panel member 4a made of a metal plate, concrete 4b loaded thereon, and a small mouth block 4c respectively attached to both ends of the hollow panel member 4a is shown. . That is, in this case, the small clogging 4c portion of the floor panel 4 is placed on the upper surface of the wide protrusion 9o of the lower flange portion 9 of the other H-shaped steel beam 6, and the small clogging 4c portion is widened by the bolt 13 and the nut 14. This is fixed to the protruding portion 9o.

  FIG. 4 (b) shows the case where the floor panel 4 is attached to another H-shaped steel beam 6 used on the wall 15 side of the building. The small clogging 4c portion of the floor panel 4 is placed on the upper surface of the wide protruding portion 9o of the portion 9, and the small clogging 4c portion is fixed to the wide protruding portion 9o by bolts 13 and nuts 14.

(a) is a cross-sectional view of a floor panel support structure according to an embodiment of the present invention, and (b) is a plan view of the floor panel support structure. (a) And (b) is a perspective view which shows the case where a column is erected in the upper flange part of another H-shaped steel beam. This shows the support structure of a floor panel in which a vibration shock absorbing member is interposed between the upper flange part of an existing H-shaped steel beam and the lower flange part of another H-shaped steel beam. A cross-sectional view of the structure, (b) is an exploded cross-sectional view. (a) is a cross-sectional view showing a conventional floor panel support structure, and (b) is a plan view. (a) An enlarged detailed cross-sectional view of the floor panel support structure showing the floor panel end bolted to the upper surface of the wide protrusion of the lower flange of another H-shaped steel beam, (b) is used on the wall side of the building It is an enlarged detailed sectional view of a floor panel support structure showing a case where a floor panel is attached to another H-shaped steel beam.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Existing H-shaped steel beam 2 Web 3 Upper flange part 4 Lower flange part 5 Column 6 Another H-shaped steel beam 7 Web 8 Upper flange part 9 Lower flange part 10 Bolt 11 Nut 12 Vibration shock absorbing member 13 Bolt 14 Nut

Claims (6)

  On top of the existing H-shaped steel beam where the upper and lower flanges have the same width, the width of the upper flange is almost the same as the flange of the existing H-shaped steel beam, and the lower flange is wider than the upper flange. Put another H-shaped steel beam projecting on both sides or one side, connect the upper flange part of the existing H-shaped steel beam and the lower flange part of the other H-shaped steel beam integrally, and under the other H-shaped steel beam Floor panel support structure in which the end of the floor panel having a thickness corresponding to the height from the upper surface of the flange portion to the upper surface of the upper flange portion is supported by the upper surface of the wide protruding portion of the lower flange portion of another H-shaped steel beam .   2. The floor panel support structure according to claim 1, wherein the upper flange portion of the existing H-shaped steel beam and the lower flange portion of another H-shaped steel beam are integrally connected by bolts and nuts.   The floor panel support structure according to claim 1, wherein the upper flange portion of the existing H-shaped steel beam and the lower flange portion of the other H-shaped steel beam are integrally connected by welding.   The floor panel support structure according to any one of claims 1 to 3, wherein a vibration shock absorbing member is interposed between an upper flange portion of an existing H-shaped steel beam and a lower flange portion of another H-shaped steel beam.   The floor panel support structure according to any one of claims 1 to 3, wherein a fireproof and heat insulating member is interposed between an upper flange portion of an existing H-shaped steel beam and a lower flange portion of another H-shaped steel beam. The floor panel according to any one of claims 1 to 3, wherein a vibration shock absorbing member and a refractory heat insulating member are interposed between an upper flange portion of an existing H-shaped steel beam and a lower flange portion of another H-shaped steel beam. Support structure.

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