JP2010203131A - Skip floor structure of building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a skip floor structure capable of suppressing the vibration of a floor surface due to the use of a skip floor. <P>SOLUTION: This skip floor structure includes an outer peripheral beam 22a disposed along the outer edge of a skip floor area and a floor panel 31 which has a predetermined rigidity higher than a reference and is disposed in the skip floor area. The end of the floor panel 31 is connected to the outer peripheral beam 22a through a panel-side bracket 35 so that the end of the floor panel 31 facing the outer peripheral beam 22a functions as a fixed support end against a push-down load acting on the floor panel 31. The panel-side bracket 35 includes a holding part which is connected to the outer peripheral beam 22a and vertically holds the end of the floor panel 31 facing the outer peripheral beam 22a. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a skip floor structure including a floor (skip floor) shifted half a floor in a building.

  Conventionally, a floor panel made of ALC (lightweight cellular concrete) is bridged between a large beam and a floor beam arranged in parallel with it in a building, and its lower surface is supported, and the structural plywood placed on the floor panel Are fixed to a large beam, a floor beam, and a floor panel with a nail (see, for example, Patent Document 1). According to the one described in Patent Document 1, the structural plywood is integrated with the large beam, the floor beam, and the floor panel, so that the in-plane shear force acting along the spreading direction of the surface of the structural plywood is applied. Thus, the rigidity of the structural plywood can be increased.

JP 2000-54540 A

  By the way, in the skip floor structure, the width in the height direction of the floor beam of the skip floor is limited in order to suppress the height from the floor surface to the ceiling surface in the upper and lower rooms sandwiching the skip floor. Sometimes. In such a case, there arises a problem that the rigidity of the floor beam of the skip floor cannot be sufficiently increased. Therefore, when the structure of Patent Document 1 is applied to a skip floor structure, the floor beam is greatly bent when the skip floor is used, and the vibration of the floor surface may be increased. In addition, although the thing of patent document 1 can make the rigidity of the structural plywood high with respect to an in-plane shear force, the effect which suppresses the vibration of the floor surface accompanying use of a skip floor is limited. .

  Further, it is conceivable to support both ends of the floor panel at the outer peripheral edge of the skip floor without using the floor beam, but even in that case, the thickness of the floor panel is limited for the same reason as described above. Therefore, the rigidity of the floor panel cannot be sufficiently increased, and the vibration of the floor surface associated with the use of the skip floor may increase.

  The present invention has been made in view of the above circumstances, and a main object of the present invention is to provide a skip floor structure capable of suppressing the vibration of the floor surface associated with the use of the skip floor.

  The present invention employs the following means in order to solve the above problems.

  1st invention is a skip floor structure provided with the beam arrange | positioned in a skip floor area | region, and the floor panel arrange | positioned in the said skip floor area | region which has predetermined | prescribed rigidity, Comprising: Push-down which acts on the said floor panel The end of the floor panel is connected to the beam so that the end of the floor panel facing the beam functions as a fixed support end against a load.

  The structure in which the floor panel is supported by the beam along the end thereof is as shown in FIG. 3A when considered in a cross section perpendicular to the extending direction of the beam. In this structure, the lower surfaces of the floor panel P are supported by the beams B at both ends. This structure can be replaced with a simple beam model as shown in FIG. For this reason, both ends of the floor panel P function as simple support ends in the simple beam model with respect to the pressing load F acting on the floor panel P. That is, the rotation of the floor panel P with the both ends of the floor panel P as fulcrums is allowed. In FIG. 3, the alternate long and short dash line represents the center line of the beam when the load F is not applied, and the broken line represents the center line of the beam when the load F is applied and the beam is bent. .

  On the other hand, according to the first invention, with respect to the pressing load acting on the floor panel, the end of the floor panel functions as a fixed support end so that the end of the floor panel facing the beam functions as a fixed support end. Since the end portion is connected to the beam, this structure becomes a fixed beam model shown in FIG. In the fixed beam model, since the beam is not allowed to rotate with both ends of the beam as fulcrums, the deflection of the beam with respect to the load F can be made smaller than in the simple beam model. Since the floor panel has a predetermined rigidity, it can withstand the load F when the push-down load F acts on the floor panel. As a result, it is possible to suppress the vibration of the floor surface associated with the use of the skip floor. The predetermined rigidity required for the floor panel can be set so as to satisfy the standard if it has rigidity equivalent to, for example, an ALC (lightweight aerated concrete) panel.

  2nd invention is a skip floor structure provided with the beam arrange | positioned in a skip floor area | region, and the floor panel arrange | positioned in the skip floor area | region which has predetermined rigidity, and is connected with the said beam, And a connecting member having a clamping part for clamping the end of the floor panel facing the beam from above and below.

  According to the second aspect of the invention, since the connecting member having the clamping portion that is connected to the beam and clamps the end portion of the floor panel facing the beam from above and below is provided, when a pressing load is applied to the floor panel In addition, the end of the floor panel facing the beam presses the clamping part, and this pressing force is received by the clamping part. Therefore, the end portion of the floor panel facing the beam is held between the sandwiching portions and does not move, so that the end portion of the floor panel can function as a fixed support end. Therefore, the same operational effects as those of the first invention can be achieved.

  In a third aspect based on the second aspect, since the sandwiching portion has a structure extending along an end portion of the floor panel facing the beam, the end portion of the floor panel is spread over a wide range by the sandwiching portion. While being able to clamp, when the edge part of a floor panel presses a clamping part, the pressure which acts between these can be reduced.

  In the skip floor structure, in order to prevent the height from the floor surface to the ceiling surface in the upper and lower rooms sandwiching the skip floor from being lowered, the intermediate beam placed in the skip floor area has a width in the height direction. May be limited. For this reason, the rigidity of the intermediate beam cannot be sufficiently increased, and the vibration of the floor surface associated with the use of the skip floor may increase.

  In this regard, the fourth invention is based on any one of the first to third inventions, and the beam includes an outer peripheral beam arranged along an outer edge of the skip floor region, and the outer periphery within the skip floor region. An intermediate beam arranged in parallel with the beam, and a plurality of the floor panels are spanned between the outer circumferential beam and the intermediate beam, so that the end portion of the floor panel facing the outer circumferential beam and the middle The end facing the beam can function as a fixed support end. As a result, even when the rigidity of the intermediate beam cannot be sufficiently increased, the vibration of the floor surface associated with the use of the skip floor can be suppressed.

  According to a fifth invention, in any one of the first to fourth inventions, since the floor panel is made of a concrete panel, it can satisfy a rigidity standard necessary for the floor panel. In addition, as a concrete panel, an ALC panel, a PC (precast concrete) panel, etc. are employable.

  When a suspended floor structure that suspends the skip floor is employed as the skip floor structure, a space without columns can be formed below the skip floor. However, in such a suspended floor structure, since the periphery of the suspended floor is not fixed, vibration of the suspended floor may be increased.

  In this regard, the sixth invention is the invention according to any one of the first to fifth inventions, wherein the skip floor structure includes a suspended floor structure that suspends the skip floor, and includes a vibration suppression mechanism that suppresses vibration of the skip floor. The vibration of the skip floor can be suppressed while forming a space without a pillar below the skip floor. Note that the vibration control mechanism may suppress vibrations in any direction, such as vertical vibrations or horizontal vibrations of the skip floor.

  In addition, by adopting a damping damper provided in the skip floor as the damping mechanism, a damping mechanism can be realized in the skip floor, and the relationship between the skip floor structure and the building structure Need not be considered.

  According to a seventh aspect of the invention, in the sixth aspect of the invention, the vibration damping mechanism is a cushioning material provided between a pillar that suspends the skip floor and an outer wall of the building. Can also be suppressed. According to such a structure, the horizontal vibration of the skip floor can be effectively suppressed.

  8th invention is provided with the connection member which has a clamping part which clamps the edge part which opposes the said beam of the said floor panel from the upper and lower sides in any 1st-7th invention. Since the connecting member is separable from the beam and is integrated with the floor panel, the floor panel in a state where the clamping portion is assembled in advance can be assembled to the beam. As a result, since the floor panel and the sandwiching portion can be assembled, the floor panel can be efficiently installed.

  According to a ninth invention, in any one of the first to seventh inventions, there is provided a connecting member that is connected to the beam and includes a clamping part that clamps an end of the floor panel that faces the beam from above and below. The connecting member is separable from the beam and the floor panel, and a first connecting member that is connected to the beam and abuts the end of the floor panel facing the beam from above or below, and It has a 2nd connection member connected with the said beam in the state contact | abutted from the opposite side to the said 1st connection member at the edge part which opposes the said beam of the said floor panel.

  According to the ninth aspect, the floor panel is arranged so that the end of the floor panel facing the beam is brought into contact with the first connecting member in a state where the second connecting member is separated from the beam and the floor panel. Can do. Then, the second connecting member is brought into contact with the end opposite to the beam from the side opposite to the first connecting member, and the second connecting member is connected to the beam so that the end facing the beam on the floor panel is moved up and down. Can be pinched.

  According to such a structure, even if it is a case where the assembly of a floor panel and a connection member cannot be arrange | positioned, the clamping part which clamps the edge part which opposes the beam of a floor panel from the upper and lower sides can be formed. Further, the second connecting member can be attached later to form the sandwiching portion with respect to the existing skip floor structure that does not include the sandwiching portion that sandwiches the end of the floor panel facing the beam from above and below. As a result, the existing skip floor structure can be modified so that the vibration of the floor surface due to the use of the skip floor can be suppressed.

The longitudinal cross-sectional view which shows a skip floor structure. The longitudinal cross-sectional view which shows a skip floor structure. The schematic diagram which shows a support beam model. The top view which shows a skip floor structure. The exploded sectional view showing the attaching part of a floor panel. The disassembled perspective view which shows the attaching part of a floor panel. The figure which shows the modification of the attaching part of a floor panel. The longitudinal cross-sectional view which shows the damping damper and buffer material of a skip floor.

  Hereinafter, an embodiment of a skip floor structure of a building will be described with reference to the drawings. The present embodiment is embodied in a building having a plurality of floors constructed by a steel frame assembling method, and employs a building structure in which a skip floor (half floor) is installed on the first floor portion of the building.

  As shown in FIGS. 1 and 2, the building includes beams 12a and 12b supported by columns. The beams 12a and 12b are made of I-shaped steel and are provided as beams between the first and second floors of the building. 1 is a cross-sectional view taken along line 1-1 of FIG. 4, and FIG. 2 is a cross-sectional view taken along line 2-2 of FIG.

  The plurality of beams 12a extend in parallel, and the plurality of beams 12b extend in parallel in a direction intersecting the beam 12a. The beam 12a and the beam 12b are connected to each other, and a region surrounded by the beams 12a and 12b is formed. The beams 12a are arranged in parallel, and the beams 12b are also arranged in parallel. The beam 12a and the beam 12b are orthogonal to each other, and a region surrounded by the beams 12a and 12b is formed in a rectangular shape.

  In the space above and below this region, a skip floor 30 is provided at a position shifted by a half floor from the beams 12a and 12b (here, a position shifted by a half floor below). The skip floor 30 is provided with an area equal to this area. The area where the skip floor 30 is provided is referred to as a skip floor area.

  The skip floor structure including the skip floor 30 will be described with reference to FIGS.

  In the building, the first floor portion is below the beams 12a and 12b, and the second floor portion is above the beams 12a and 12b.

  Between the beams 12a extending in parallel, the beams 13 are arranged so as to extend in the same direction as the beams 12a. The beam 13 is made of I-shaped steel, and both ends thereof are connected to the beam 12b. These beams 12a, 12b, and 13 support a second-floor floor panel 51 made of an ALC panel or the like. A two-story room 50 is provided above the floor panel 51.

  In the first floor portion of the building, a skip floor 30 is provided at an intermediate height. A garage 60 is provided in a space below the skip floor 30, and a lower portion of the skip floor 30 constitutes a ceiling 61 of the garage 60. A skip storage chamber 40 is provided in the space above the skip floor 30, and the upper portion of the skip floor 30 constitutes a floor 42 of the skip storage chamber 40. Here, in order to suppress the height from the floor of the garage 60 to the ceiling 61 and the height from the floor 42 to the ceiling 43 of the skip storage chamber 40, the width in the height direction of the skip floor 30 is limited. Has been.

  The skip floor structure including the skip floor 30 is a suspended floor structure that suspends the skip floor 30. The skip floor 30 is suspended by a suspension pillar 21 as a member connected to the beams 12a and 12b. The suspension column 21 is made of square steel and extends downward from the lower portions of the beams 12a and 12b. The plurality of suspension pillars 21 are provided so as to surround the skip floor region, and these suspension pillars 21 are respectively connected to the outer edge portions of the skip floor 30. Thus, since the skip floor 30 is connected to the beams 12a and 12b of the building, the skip floor 30 can be stably suspended.

  The skip floor 30 includes outer peripheral beams 22a and 22b arranged along the outer edge of the skip floor region. And these outer periphery beams 22a and 22b and the suspension pillar 21 are connected. Specifically, the outer circumferential beams 22a and 22b are made of H-shaped steel, and are arranged so that the H-shaped steel web extends vertically. In the outer circumferential beams 22a and 22b, the H-shaped steel web and the side surface of the suspension column 21 are connected. The H-shaped steel web and the side surface of the suspension column 21 are connected to each other by a connecting fitting 24 over a predetermined width in the vertical direction. For this reason, when a downward load is applied to the skip floor 30, the outer peripheral beams 22a and 22b and the suspension column 21 can be prevented from relative movement or relative rotation. That is, it is possible to prevent the outer peripheral beams 22a and 22b from rotating with the connecting fitting 24 as a fulcrum.

  In the skip floor region, an intermediate beam 23 is arranged in parallel with the outer peripheral beam 22a. Specifically, the intermediate beam 23 is arranged in parallel with the outer circumferential beam 22a, and the distances to the outer circumferential beam 22a located on both sides are equal. The intermediate beam 23 is made of H-section steel, and is arranged such that the H-section steel web extends vertically. Both ends of the outer peripheral beam 22a and the intermediate beam 23 are connected to the outer peripheral beam 22b by a connecting metal fitting 25.

  A plurality of floor panels 31 made of ALC panels are bridged between the outer peripheral beam 22a and the intermediate beam 23. The floor panel 31 is formed in a rectangular shape, and both ends in the longitudinal direction thereof are connected to the outer peripheral beam 22a and the intermediate beam 23, respectively. Since the floor panel 31 is composed of an ALC panel, the floor panel 31 has a predetermined rigidity higher than a plywood material (particle board) that is a wooden floor material, for example, with respect to a pressing load associated with the use of the skip floor 30. ing. Further, as other panels satisfying these standards, PC (precast concrete) panels and the like can be employed. In other words, any panel having a rigidity equal to or higher than the ALC panel with respect to the pressing load associated with the use of the skip floor 30 can be adopted as satisfying the standard.

  As described above, since the width in the height direction of the skip floor 30 is limited, the floor in the height direction when the outer peripheral beam 22a or the intermediate beam 23 and the floor panel 31 are attached is narrowed. The panel 31 is dropped between the outer peripheral beam 22a and the intermediate beam 23. Moreover, since the outer circumferential beam 22a and the intermediate beam 23 are limited in width in the height direction, the rigidity of the outer circumferential beam 22a and the intermediate beam 23 cannot be sufficiently increased.

  Therefore, in order to suppress the vibration of the floor 42 due to the use of the skip floor 30, when a pressing load is applied to the floor panel 31, the end portions of the floor panel 31 facing the beams 22 and 23 function as fixed support ends. Thus, the end of the floor panel 31 is connected to the beams 22 and 23, respectively. Hereinafter, such a structure will be described in detail with reference to FIGS. Since the structure for connecting the outer peripheral beam 22a and the floor panel 31 is the same as the structure for connecting the intermediate beam 23 and the floor panel 31, the structure for connecting the outer peripheral beam 22a and the floor panel 31 will be described as a representative. To do.

  As shown in FIGS. 5 and 6, the beam side bracket 22 d provided on the beam 22 a and the panel side bracket 35 (connecting member) assembled to the floor panel 31 are connected to each other. A panel 31 is connected to the beam 22a. The panel side bracket 35 includes a plurality of connecting portions 33, and the connecting portions 33 are respectively connected to the beam side bracket 22d. In order to prevent relative rotation between the beam-side bracket 22d and the connecting portion 33 when a pressing load is applied to the floor panel 31, the beam-side bracket 22d and the connecting portion 33 are connected at a plurality of locations. Specifically, through-holes 22h and 33h are formed in the beam-side bracket 22d and the connecting portion 33 at positions shifted vertically, and bolts and nuts are aligned with the positions of the through-hole 22h and the through-hole 33h. It is concluded by.

  The panel-side bracket 35 includes a sandwiching portion 32 that sandwiches an end of the floor panel 31 facing the beam 22a from above and below. The sandwiching portion 32 is integrated with the connecting portion 33 and is connected to the beam 22a via the beam-side bracket 22d. For this reason, the clamping part 32 and the beam 22a are connected so as not to move or rotate relative to each other.

  The sandwiching portion 32 includes a pair of flanges 32 f that sandwich the floor panel 31, and these flanges 32 f are in contact with the surface of the floor panel 31. The flange 32f extends along the longitudinal direction of the beam 22a. In other words, the clamping part 32 consists of a groove-shaped steel material, and the edge part which opposes the beam 22a of the floor panel 31 is inserted between a pair of flanges 32f. For this reason, the clamping part 32 will clamp the floor panel 31 by the plate-shaped flange 32f extended along the longitudinal direction of the beam 22a. Therefore, the contact area between the flange 32f and the floor panel 31 can be increased, and the pressure acting between the flange 32f and the floor panel 31 can be reduced. Therefore, it is possible to prevent the floor panel 31 from being damaged when a pressing load is applied to the floor panel 31. In particular, since the flange 32f sandwiches the end portion of the floor panel 31 facing the beam 22a over the entire length, the pressure acting between the flange 32f and the floor panel 31 can be further reduced.

  In the longitudinal direction of the floor panel 31, the flange 32 f has a predetermined overlapping width w with the end portion of the floor panel 31 facing the beam 22 a. The pair of flanges 32f sandwich the end of the floor panel 31 over the overlapping width w. In other words, in the longitudinal direction of the floor panel 31, the floor panel 31 is inserted between the pair of flanges 32f so as to have an overlap width w. For this reason, the contact area between the flange 32f and the floor panel 31 can be increased, and the pressure acting between the flange 32f and the floor panel 31 can be reduced. As a result, the floor panel 31 can be prevented from being damaged when a pressing load is applied to the floor panel 31.

  In the floor panel 31, the end surface on the outer peripheral beam 22 a side and the end surface on the intermediate beam 23 side are in contact with the side surface portion 32 w of the sandwiching portion 32. For this reason, the floor panel 31 can receive a load in a direction in which the distance between the outer peripheral beam 22 a and the intermediate beam 23 is reduced, and can suppress relative movement between the outer peripheral beam 22 a and the intermediate beam 23. For this reason, it is not necessary to separately provide a beam for suppressing relative movement between the outer peripheral beam 22a and the intermediate beam 23. The pair of flanges 32f and the floor panel 31 are fastened by screws 34. For this reason, the relative movement between the pair of flanges 32f and the floor panel 31 can be suppressed, and the gap between the pair of flanges 32f and the floor panel 31 can be reduced.

  The panel side bracket 35 can be separated from the beam 22a by separating the connecting portion with the beam side bracket 22d. As for the procedure for assembling the floor panel 31 and the beam 22a, after the floor panel 31 and the panel side bracket 35 are assembled together in advance and assembled into an assembly, the assembly is assembled into the outer circumferential beam 22a. For this reason, the floor panel 31 and the panel side bracket 35 can be assembled before assembly of the floor panel 31 and the beam 22a.

  According to the embodiment described in detail above, the following excellent effects can be obtained.

  Because the end of the floor panel 31 is connected to the outer peripheral beam 22a so that the end facing the outer peripheral beam 22a of the floor panel 31 functions as a fixed support end against the pressing load acting on the floor panel 31. This structure is a fixed beam model shown in FIG. In the fixed beam model, since the beam is not allowed to rotate around both ends of the beam, the deflection of the beam with respect to the load F can be made smaller than in the simple beam model shown in FIG. And since the floor panel 31 consists of an ALC panel and has predetermined rigidity higher than a reference | standard, when the downward load F acts on the floor panel 31, it can endure the load F. FIG. As a result, the vibration of the floor surface associated with the use of the skip floor 30 can be suppressed.

  Specifically, a panel-side bracket 35 is provided that is connected to the outer peripheral beam 22a and has a clamping portion 32 that clamps an end of the floor panel 31 facing the outer peripheral beam 22a from above and below. Since the pair of flanges 32f of the sandwiching portion 32 are in contact with the surface of the floor panel 31 respectively, the end of the floor panel 31 that faces the outer peripheral beam 22a is applied to the pair of flanges when a load pushing down the floor panel 31 is applied. 32f will be pressed. And since this pressing force is received by a pair of flange 32f, the edge part which opposes the outer periphery beam 22a of the floor panel 31 is hold | maintained between a pair of flange 32f, and it does not move. As a result, when a pressing load is applied to the floor panel 31, the end portion of the floor panel 31 that faces the outer peripheral beam 22a can function as a fixed support end.

  Since the sandwiching portion 32 extends along the end portion of the floor panel 31 facing the outer peripheral beam 22a, the end portion of the floor panel 31 can be sandwiched over a wide range by the sandwiching portion 32, and the end of the floor panel 31 is also supported. When a part presses the clamping part 32, the pressure which acts between these can be reduced.

  In order to prevent the height from the respective floor surfaces to the ceiling surface in the upper and lower two-story rooms 50 and the garage 60 sandwiching the skip floor 30, the intermediate beam 23 arranged in the skip floor region is suppressed. Has a limited width in the height direction. For this reason, the rigidity of the intermediate beam 23 cannot be sufficiently increased, and the deflection of the intermediate beam 23 becomes large when the skip floor 30 is used, and the vibration of the floor surface due to the use of the skip floor 30 may increase. is there. In this respect, since the panel-side bracket 35 including the sandwiching portion 32 is connected to the outer peripheral beam 22a and the intermediate beam 23, an end portion facing the outer peripheral beam 22a and an end portion facing the intermediate beam 23 of the floor panel 31 Can function as a fixed support end. As a result, even if the rigidity of the intermediate beam 23 cannot be sufficiently increased, the vibration of the floor surface associated with the use of the skip floor 30 can be suppressed.

  Since the floor panel 31 is composed of an ALC panel, it is possible to satisfy the standard of rigidity required for the floor panel 31. For this reason, when a pressing load acts on the floor panel 31 in a state where the end portion of the floor panel 31 facing the outer peripheral beam 22a is fixed by the sandwiching portion 32, the floor panel 31 can withstand this load.

  A panel-side bracket 35 including a clamping portion 32 that is connected to the outer circumferential beam 22a and sandwiches an end of the floor panel 31 facing the outer circumferential beam 22a from above and below is provided. The panel-side bracket 35 is separable from the outer circumferential beam 22a. And integrated with the floor panel 31. For this reason, the floor panel 31 in a state where the panel-side bracket 35 is assembled in advance can be assembled to the outer circumferential beam 22a. As a result, since the floor panel 31 and the panel side bracket 35 can be assembled, the floor panel 31 can be efficiently installed.

  It is not limited to the said embodiment, For example, it can also implement as follows.

  In the above embodiment, the pair of flanges 32f sandwich the end portion of the floor panel 31 facing the beam 22a over the entire length, but part of the end portion of the floor panel 31 facing the beam 22a is a pair of flanges. The structure which 32f clamps may be sufficient.

  In the above embodiment, the floor panel 31 is dropped between the outer peripheral beam 22a and the intermediate beam 23, but a part or the whole of the floor panel 31 is positioned above the surface of the beams 22a and 23. You can also do it. Even in that case, the end portion of the floor panel 31 facing the beam 22a may be sandwiched from above and below by the sandwiching portion 32.

  In the above embodiment, the floor panel 31 in which the panel side bracket 35 is assembled in advance is assembled to the outer circumferential beam 22a. However, after the panel side bracket 35 is connected to the outer circumferential beam 22a, the floor panel 31 is attached to the panel side bracket. 35 can also be connected. Moreover, the panel side bracket 35 and the beam side bracket 22d can also be formed integrally.

  Further, as shown in FIG. 7, in the state where both ends in the longitudinal direction of the floor panel 131 are spanned over the beam side brackets 132 respectively provided on the outer peripheral beam 122a and the intermediate beam extending in parallel therewith, the panel side bracket You may make it assemble | attach 134 to the floor panel 131 and the outer periphery beam 122a.

  Specifically, a panel-side bracket 134 and a beam-side bracket 132 that are connected to the outer peripheral beam 122a and have a clamping portion that clamps an end of the floor panel 131 that faces the outer peripheral beam 122a from above and below are provided. The beam-side bracket 132 (first connecting member) includes a contact portion 132b that comes into contact with the end portion of the floor panel 131 facing the outer peripheral beam 122a from below, and a connecting portion 132a that is connected to the outer peripheral beam 122a. The panel-side bracket 134 (second connecting member) can be separated from the outer peripheral beam 122a and the floor panel 131, and the abutting portion 132b of the beam-side bracket 132 is connected to the end of the floor panel 131 facing the outer peripheral beam 122a. The contact part 134b contact | abutted from the upper side of the other side and the connection part 134a connected with the outer periphery beam 122a are provided. The contact part 134b is integrated with the connection part 134a so as to come into contact with the floor panel 131 when the connection part 134a is arranged to be connected to the outer peripheral beam 122a.

  Then, as shown in FIG. 7, the connecting portion 134 a is inserted from the gap between the outer peripheral beam 122 a and the floor panel 131, and the contact portion 134 b is arranged so as to protrude from the outer peripheral beam 122 a toward the floor panel 131. As a result, the connecting portion 134a is disposed in a state where it can be connected to the outer peripheral beam 122a, and the contact portion 134b is in contact with the floor panel 131. Thereafter, by connecting the connecting portion 134a to the outer peripheral beam 122a with a bolt or the like, the end portion on the outer peripheral beam 122a side of the floor panel 131 can be sandwiched from above and below by the beam side bracket 132 and the panel side bracket 134. These floor panel 131, beam side bracket 132 and panel side bracket 134 are fastened by screws 34.

  According to such a structure, even when the assembly in which the floor panel and the sandwiching portion are assembled cannot be arranged, the sandwiching portion that sandwiches the end facing the outer peripheral beam 122a of the floor panel 131 from above and below. The panel side bracket 134 and the beam side bracket 132 can be formed. In addition, after connecting the panel side bracket 134 and the floor panel 131 to the outer periphery beam 122a, the beam side bracket 132 can also be connected to the outer periphery beam 122a. In addition, a panel-side bracket 134 can be attached later to form a sandwiching portion with respect to an existing skip floor structure that does not include a sandwiching portion that sandwiches an end facing the outer peripheral beam side of the floor panel from above and below. . As a result, the existing skip floor structure can be modified so that the vibration of the floor surface due to the use of the skip floor can be suppressed.

  When a suspended floor structure that suspends the skip floor 30 is employed as the skip floor structure, a space without columns can be formed below the skip floor 30. However, in such a suspended floor structure, since the periphery of the skip floor 30 is not fixed, the vibration of the skip floor 30 may increase.

  In this regard, as shown in FIG. 8, with respect to the skip floor structure that is a suspended floor structure that suspends the skip floor 30, a damping damper 210 and a buffer material 220 are provided as a damping mechanism that suppresses vibration of the skip floor 30. You may do it. According to such a structure, vibration of the skip floor 30 can be suppressed while forming a space without a pillar below the skip floor 30. Note that the vibration control mechanism may suppress vibrations in any direction such as vertical vibrations or horizontal vibrations of the skip floor 30.

  Here, the damping damper 210 suppresses the vertical vibration of the skip floor 30 based on the flow resistance of the viscoelastic fluid provided therein. The damping damper 210 is provided between the floor panel 31 and the ceiling 61 of the garage 60 so as to be housed in the skip floor 30. For this reason, it is not necessary to consider the relationship between the skip floor structure and the building structure. Further, the cushioning material 220 is provided between the suspension column 21 that suspends the skip floor 30 and the outer wall 71 of the building, and suppresses horizontal vibration of the skip floor 30 by elastically deforming according to the load. .

  In the above embodiment, the skip floor 30 having the same area as the area surrounded by the beams 12a and 12b is provided. However, the skip floor 30 having an area smaller than this area can be provided. Even in such a case, if the floor panel 31 is spanned between the outer circumferential beam 22a and the intermediate beam 23, the same effects as those of the above embodiment can be achieved. Moreover, the intermediate beam 23 may not exist in the skip floor 30, and the structure by which the both ends of the floor panel 31 are spanned by the outer periphery beam 22a extended in parallel may be sufficient. Even in this case, by adopting a fixed beam model in which the end facing the outer peripheral beam 22a of the floor panel 31 functions as a fixed support end against a pressing load acting on the floor panel 31, The bending of the beam with respect to the load can be made smaller than in the simple beam model in which the end facing the outer circumferential beam 22a functions as a simple support end. As a result, it is possible to suppress the vibration of the floor surface associated with the use of the skip floor.

In the above embodiment, the beams 12a and 12b are provided as beams between the first and second floors of the building. However, other beams such as a ceiling beam of a one-story building and beams between the second and third floors are provided. It may be a beam. Even in that case, the skip floor 30 can be suspended from the beams 12a and 12b. In the above embodiment, the skip floor 30 having the suspended floor structure is provided below the beams 12a and 12b. The supported skip floor 30 can also be provided below the beams 12a and 12b. In this case, the outer peripheral beams 22a and 22b arranged along the outer edge of the skip floor region may be supported by the columns.

  22a ... outer peripheral beam, 31 ... floor panel, 35 ... panel side bracket 35.

Claims (9)

A skip floor structure comprising a beam arranged in a skip floor area and a floor panel having a predetermined rigidity and arranged in the skip floor area,
The end portion of the floor panel is connected to the beam such that the end portion of the floor panel facing the beam functions as a fixed support end against a pressing load acting on the floor panel. Skip floor structure of the building. A skip floor structure comprising a beam arranged in a skip floor area and a floor panel having a predetermined rigidity and arranged in the skip floor area,
A skip floor structure for a building, comprising a connecting member connected to the beam and having a holding portion for holding an end portion of the floor panel facing the beam from above and below.   The skip floor structure for a building according to claim 2, wherein the sandwiching portion extends along an end portion of the floor panel facing the beam. The beam includes an outer circumferential beam disposed along an outer edge of the skip floor region, and an intermediate beam disposed in parallel with the outer circumferential beam in the skip floor region,
The skip floor structure of a building according to any one of claims 1 to 3, wherein a plurality of the floor panels are bridged between the outer peripheral beam and the intermediate beam.   The skip floor structure of a building according to any one of claims 1 to 4, wherein the floor panel is made of a concrete panel. The skip floor structure consists of a suspended floor structure that suspends the skip floor.
The building skip floor structure according to any one of claims 1 to 5, further comprising a vibration control mechanism that suppresses vibration of the skip floor.   7. The skip floor structure of a building according to claim 6, wherein the vibration control mechanism is a cushioning material provided between a pillar that suspends the skip floor and an outer wall of the building. The connecting member is connected to the beam and includes a connecting member having a sandwiching portion that sandwiches an end of the floor panel facing the beam from above and below,
The building floor skip structure according to claim 1, wherein the connecting member is separable from the beam and is integrated with the floor panel. The connecting member is connected to the beam and includes a connecting member having a sandwiching portion that sandwiches an end of the floor panel facing the beam from above and below,
The connecting member is connected to the beam and is detachable from the beam and the floor panel, and a first connecting member that comes into contact with an end of the floor panel facing the beam from above or below, and 8. The second connection member connected to the beam in a state in which the end of the floor panel faces the beam from the side opposite to the first connection member. 2. A skip floor structure of a building according to item 1.

Images