JP6216391B2 - Seismic isolation swing slab support device and seismic isolation swing slab construction method using the same - Google Patents

Description

  The present invention relates to a seismic isolation swing slab support device and a seismic isolation swing slab construction method using the same, and more particularly, a building vibration is generated by a disaster such as an earthquake or a strong wind or other external force transmitted from the outside. Seismic isolation swing slab support device that can improve the construction structure of the slab so that the external force from the columnar body and beam structure that is the main structure is not directly transmitted to the slab, and seismic isolation swing slab construction using this Regarding the method.

  In general, seismic design of buildings that can respond to disasters such as earthquakes and strong winds or other external forces transmitted to the building from the outside is the combination of column structures and beam structures and column and beam structures. This is done by structurally reinforcing the area. And the slab which makes the bottom face or ceiling of a building space is constructed by the system supported on the upper part of a beam structure.

  At this time, the beam structure and the slab can be integrally constructed by placing concrete, but such a structure has low seismic performance. In particular, in the case of a high-rise building, it is difficult to ensure safety structurally.

  On the other hand, among the construction methods for earthquake-resistant buildings, when installing a slab on the upper part of a beam structure, a seismic isolation slab that uses a seismic isolation device that can absorb vibration between the beam structure and the slab. There is a construction method.

  However, in such conventional seismic isolation slab construction methods, since the slab is constructed on the upper part of the beam structure, even if a seismic isolation device having a buffer function is interposed between the beam structure and the slab, When an object is vibrated and shocked, the slab can only be shaken because the vibration and shock are transmitted to the slab via the column structure, the beam structure, and the seismic isolation device.

  If such slab shaking occurs excessively, it is impossible to guarantee the safety of residents and furniture such as furniture inside the building. In the worst case, collapse of the slab and collapse of the building may occur. There are problems that cause serious situations to occur.

  And, when the slab is constructed on the upper part of the beam structure, since the seismic isolation device having a buffer function is interposed between the beam structure and the slab, there arises a problem that the floor height of the building is lowered. .

  Moreover, since an expensive seismic isolation apparatus is used, there exists a problem that construction cost rises.

  Accordingly, an object of the present invention is to provide a seismic isolation swing slab support device capable of effectively preventing slab swinging during building vibration and a seismic isolation swing slab construction method using the same.

  Another object of the present invention is to provide a seismic isolation swing slab support device capable of minimizing the floor height of a building and reducing construction costs, and a seismic isolation swing slab construction method using the same. .

  According to the present invention, a suspension member that suspends and supports a slab so that it can freely vibrate in a lower portion of the beam structure; and the suspension member is movably coupled to the slab and the beam structure according to the present invention. This is achieved by a seismic isolation swing slab support device characterized in that it includes loose coupling means.

  Further, the object is achieved by a seismic isolation swing slab construction method characterized in that a slab supported by a beam structure on a column structure is suspended and supported at a lower part of the beam structure so as to freely vibrate.

  Here, a slab placement step of placing the slab below the beam structure; and a support device installation step of installing a slab support device that suspends and supports the slab so as to be movable relative to the beam structure. Is preferably included.

  In the supporting device installation step, a suspension member that suspends and supports the slab at a lower portion of the beam structure so as to be relatively plane-movable is installed; the suspension member is relative to the slab and the beam structure. It is advantageous to include a step of installing a floating coupling means that is coupled so as to be freely movable.

  The suspension member has a rod shape penetrating the slab and the beam structure so as to be freely movable, and a coupling portion is formed at both end regions in the longitudinal direction to couple the floating coupling means. A pair of floating supports having through holes through which both end regions of the suspension member pass movably, and the coupling portion of the suspension member that has passed through both of the suspension supports, the floating support It is more preferable to include a floating coupling member that is supported so as to be relatively movable.

  At this time, the floating coupling member may have a spherical shape, and a depressed spherical surface corresponding to the spherical surface of the floating coupling member may be formed on one side of the floating support toward the floating coupling member.

  Alternatively, the floating coupling member is formed in a partially spherical shape on one side toward the floating support, and a concave spherical surface corresponding to the partial spherical surface of the floating coupling member is formed on one side of the floating support toward the floating coupling member. Can be formed.

  Alternatively, the floating support may have a spherical shape, and a depressed spherical surface corresponding to the spherical surface of the floating support may be formed on one side of the floating coupling member that faces the floating support.

  Alternatively, the floating support has a partially spherical shape on one side toward the floating coupling member, and a concave spherical surface corresponding to the partial spherical surface of the floating support on one side of the floating coupling member toward the floating support. Can be formed.

  On the other hand, a plurality of floating holes through which the suspension member passes movably are formed in both side regions of the slab and the beam structure corresponding thereto, and the suspension member has a smaller diameter than the floating hole. It is preferable that it is installed so as to penetrate the floating hole.

  In this case, it is effective that the floating hole is formed in a long hole corresponding to the longitudinal direction or the width direction of the beam structure.

  On the other hand, it is preferable that a damping means is provided in either one of the edge region of the slab and the column structure facing the slab.

  ADVANTAGE OF THE INVENTION According to this invention, the seismic isolation swing slab support apparatus which can prevent effectively the vibration of a slab at the time of the vibration of a building, and the seismic isolation swing slab construction method using the same are provided.

  In addition, a seismic isolation swing slab support device capable of minimizing the floor height of a building and reducing construction costs and a seismic isolation swing slab construction method using the same are provided.

It is a block diagram of the seismic isolation swing slab construction process by this invention. It is a perspective view of the construction state of the seismic isolation swing slab constructed by the seismic isolation swing slab construction method according to the present invention. It is a perspective view of the slab support apparatus used for the seismic isolation swing slab construction method by this invention. It is a disassembled perspective view of the slab support apparatus of FIG. It is an expanded sectional view of the slab support apparatus installation area | region of FIG. It is an expanded sectional view of the slab support apparatus installation area | region by the other example of the slab support apparatus of FIG. It is an expanded sectional view of the slab support apparatus installation area | region by the other example of the slab support apparatus of FIG. It is an expanded sectional view of the slab support apparatus installation area | region by the other example of the slab support apparatus of FIG. It is an expanded sectional view of the slab support apparatus installation area | region by the other example of the slab support apparatus of FIG. It is a top view of the slab corresponding to construction of the seismic isolation swing slab support device by other examples of the present invention. It is a top view of the slab corresponding to construction of the seismic isolation swing slab support device by other examples of the present invention.

  As shown in FIGS. 1 and 2, the seismic isolation swing slab construction method according to the present invention has a configuration in which the slab 110 is suspended and supported on the lower part of the beam structure 120 so as to be relatively movable in a plane. For this reason, the slab arrangement | positioning step (S01) which arrange | positions the slab 110 to the lower part of the beam structure 120, and the slab support apparatus 1 which suspends and supports the slab 110 so that a plane movement is possible with respect to the beam structure 120 are installed. The installation stage (S02) of the support apparatus 1 is included.

  Here, in the installation stage (S02) of the support device 1, the suspension member 10 that suspends and supports the slab 110 so as to be relatively plane-movable is installed below the beam structure 120 (S02a), and the suspension member 10 is slab 110. And the floating coupling means 20 that couples relatively freely to the beam structure 120 (S02b).

  The slab support device 1 for embodying the seismic isolation swing slab construction method according to the present invention, as described above and as shown in FIGS. A suspension member 10 that suspends and supports the surface movably in a plane manner, and a floating coupling means 20 that movably couples the suspension member 10 to the slab 110 and the beam structure 120 are included.

  The suspension member 10 has a rod-like length that slidably penetrates the slab 110 and the beam structure 120, and has a coupling portion 11 to which a floating coupling member 25 of a floating coupling means 20 described later is coupled to both end regions in the longitudinal direction. A formed structure is preferred.

  At this time, it is preferable that the coupling portion 11 of the suspension member 10 and the floating coupling member 25 described later are coupled to each other by a screw fastening structure. The coupling portion 11 of the suspension member 10 is a male screw portion, and a female screw portion is formed on the floating coupling member 25, or the coupling portion 11 of the suspension member 10 is a female screw portion and the male coupling portion 25 is formed on the floating coupling member 25. The form can be selected.

  In order to install the suspension member 10, a floating hole 111 is formed in the slab 110 and the beam structure 120 so as to penetrate the suspension member 10 in a freely movable manner. The floating hole 111 is configured to have an inner diameter larger than the outer diameter of the suspension member 10 so that the suspension member 10 can move inside the floating hole 111. At this time, the floating hole 111 is formed as a long hole in a direction corresponding to the longitudinal direction or the width direction of the beam structure 120 so that the relative planar movement of the slab 110 with respect to the beam structure 120 is performed in one direction. Can do. Alternatively, the floating hole 111 may be formed in a circular shape having an inner diameter larger than the outer diameter of the suspension member 10 as described above, and the relative plane movement direction of the slab 110 with respect to the beam structure 120 may not be limited.

  A plurality of such idle holes 111 can be formed on both side regions of the slab 110 and the beam structures 120 corresponding to the regions on the both sides in the longitudinal direction.

  On the other hand, the floating coupling means 20 has a pair of floating support bodies 21 that allow both side end regions of the suspension member 10 to be freely slidable on the slab 110 and the beam structure 120, respectively. A pair of floating coupling members 25 respectively coupled to both side coupling portions 11 of the suspension member 10 so as to be supported so as to be freely movable.

  The floating support 21 is formed with a through-hole 22 through which the end region of the suspension member 10 can pass freely in the center.

  The through hole 22 of the floating support 21 has an inner diameter larger than the outer diameter of the suspension member 10 and preferably has an inner diameter corresponding to at least the floating hole 111 formed in the slab 110 and the beam structure 120. . Of course, the through hole 22 can be formed to have an inner diameter smaller than the loose hole 111 of the slab 110 and the beam structure 120 within a range having an inner diameter larger than the outer diameter of the suspension member 10.

  The floating support 21 is formed in a form in which the peripheral region of the through hole 22 has a circumferential length larger than that of the slab 110 and the floating hole 111 of the beam structure 120. As a result, when the suspension member 10 that has passed through the through hole 22 of the floating support 21 is coupled to the floating coupling member 25, both side end regions of the suspension member 10 are slidable to the slab 110 and the beam structure 120, respectively. It will be.

  Further, a recessed spherical surface 23 corresponding to a spherical surface 27 of the floating coupling member 25 described later is formed on one side of the floating support 21 toward the floating coupling member 25 so that the floating coupling member 25 is supported so as to be freely movable. ing.

  The floating coupling member 25 has a spherical shape at least on the side toward the floating support 21, and has a structure in which a female screw portion is formed as a coupling structure 26 in which the coupling portion 11 of the suspension member 10 is coupled to the center thereof.

  The floating coupling member 25 is a spherical member having an outer diameter larger than that of the through hole 22 of the floating support 21, and the partial spherical surface 27 on the side facing the floating support 21 is relative to the depressed spherical surface 23 of the floating support 21. Is supported so as to be freely movable.

  A fastening tool contact portion 28 is formed on the outer peripheral surface of the floating coupling member 25 as a structure for improving the workability of an operator to fasten the floating coupling member 25 to the coupling portion 11 of the suspension member 10. It is preferable. At this time, the fastening tool contact portion 28 may be formed in a polygonal surface or various forms of friction patterns.

  As described above, the coupling structure 26 for coupling to the suspension member 10 is formed by forming a female screw portion in the floating coupling member 25 when the coupling portion 11 of the suspension member 10 is a male screw portion, In the case where the ten coupling portions 11 are female screw portions, a form in which the male screw portions are formed in the floating coupling member 25 can be selected.

  Here, the floating coupling member 25 may have a hemispherical shape as shown in FIG. 9 in addition to the true circular shape as shown in FIGS. That is, the floating coupling member 25 can be formed in a partially spherical shape on one side that is supported so as to be relatively movable on the recessed spherical surface 23 of the floating support 21. At this time, the fastening tool contact portion 28 can be formed in a polygonal surface on the other side of the floating coupling member 25 or a protruding structure having a friction pattern as shown in FIG.

  On the other hand, the floating support 21 and the floating coupling member 25 of the floating coupling means 20 can be formed in various forms in addition to the above-described forms within a range in which relative floating is possible.

  For example, as shown in FIG. 8, the floating support 21 has a spherical shape, and a depression spherical surface 23 is formed on the floating coupling member 25 so as to be relatively freely movable in contact with the spherical surface 27 of the floating support 21. it can. At this time, it is preferable that a floating contact body 21 a with which the floating support body 21 contacts is interposed between the floating support body 21 and the slab 110.

  Alternatively, as shown in FIG. 7, the floating support 21 is formed in a hemispherical shape in which one side toward the floating coupling member 25 is formed in a partial spherical shape, and the depression corresponding to the partial spherical surface 27 of the floating support 21 is formed in the floating coupling member 25. The spherical surface 23 can be formed.

  In addition, the form of the floating support 21 and the floating coupling member 25 of the floating coupling means 20 can be varied within the range in which relative floating is possible.

  The process of constructing the seismic isolation swing slab 110 using the slab support device 1 having such a configuration and the seismic isolation action of the constructed slab 110 will be described.

  First, as described above and as shown in FIGS. 1 and 2, the slab 110 is placed below the beam structure 120 in the slab placement step (S01). Here, as shown in FIGS. 10 and 11, the slab 110 includes a one-span slab corresponding to the region between the four pillars 130 or a two-span slab corresponding to the region between the six pillars 130. It can be a variety of slabs. At this time, a space where the column body 130 is located is formed in the corner region or the surrounding region of the slab 110 corresponding to the column body 130.

  At this time, as shown in FIG. 5, it is preferable that the damping means 30 is installed in either one of the edge region of the slab 110 and the column structure 130 opposed thereto. This is to prepare for the collision of the slab 110 that is suspended and supported on the lower part of the beam structure 120 with the column body when the vibration of the building occurs. As the damping means 30, various types of dampers or damping devices generally used for construction work are used.

  After the placement of the slab 110, the slab support device 1 is installed in the following manner so that the slab 110 can move in a plane relative to the beam structure 120 in the installation stage (S02) of the support device 1.

  The suspension member 10 is inserted into the floating holes 111 formed in the beam structure 120 and the slab 110, and both ends of the suspension member 10 are exposed to the upper part of the beam structure 120 and the lower part of the slab 110, respectively (S02a).

  Thereafter, after placing the floating support 21 so that both ends of the suspension member 10 pass through the through hole 22 of the floating support 21 at the lower part of the slab 110 and the upper part of the beam structure 120, By fastening the loose coupling member 25 to 11, the construction of the slab support device 1 and the slab 110 is finished (S02b).

  Thus, the building slab 110 constructed by the seismic isolation swing slab construction method according to the present invention is in a state in which a load is applied downward due to its own weight and a series of heavy objects existing on the slab 110.

  On the other hand, if vibration or impact occurs in the building, the column structure 130 and the beam structure 120 are shaken by the vibration. At this time, the shaking of the column structure 130 and the beam structure 120 may be transmitted to the slab 110 that is suspended and supported by the slab support device 1 according to the present invention so as to be movable relative to the beam structure 120. Blocked.

  That is, since the downward load as described above is applied to the slab 110 even when the column structure 130 and the beam structure 120 are shaken, the floating support 21 and the spherical surface 27 and the depression of the floating coupling member 25 as shown in FIG. Due to the relative floating structure of the spherical surface 23, the structure of the beam structure 120 through which the suspension member 10 movably passes, and the structure of the floating hole 111 of the slab 110 and the through hole 22 of the floating support body 21, the slab 110 may As a result, the slab 110 does not shake.

  As a result, the slab 110 does not shake even if vibrations or impacts occur in the building, so that the safety of various fixtures such as residents and furniture inside the building is ensured, and the collapse of the slab 110 and the resulting building Collapse can be effectively prevented.

  Since no additional seismic isolation device is interposed between the slab 110 and the beam structure 120, the slab 110 can be closely attached to the beam structure 120. As a result, the floor height of the building is not lowered.

  Moreover, since an expensive seismic isolation device is not used, construction costs can be reduced.

  According to the seismic isolation swing slab support device and the seismic isolation swing slab construction method using the same according to the present invention, it is possible to effectively prevent the slab from shaking when the building vibrates.

Claims (12)

A suspension member that suspends and supports the slab so that it can freely vibrate in the lower part of the beam structure; and a floating coupling means that movably couples the suspension member to the slab and the beam structure,
The suspension member has a rod-like shape penetrating the slab and the beam structure so as to be freely movable, and a coupling portion to which the floating coupling means is coupled to both end regions in the longitudinal direction is formed.
The floating coupling means is coupled to a pair of floating supports having through holes through which both side end regions of the suspension member pass movably and the coupling portion of the suspension member that has passed both the floating supports. A floating coupling member that is supported so as to be relatively movable with respect to the floating support,
The floating support is a spherical, depression sphere on one side of the floating coupling member towards said floating support, corresponding to the spherical surface of the floating support is formed,
A seismic isolation swing slab support device, wherein a floating contact body is provided between the floating support body and the slab so as to contact the floating support body in a freely movable manner . The seismic isolation swing slab support device according to claim 1, wherein the coupling portion of the suspension member and the floating coupling member are coupled to each other by a screw fastening structure. The seismic isolation swing slab support device according to claim 2 , wherein the loose coupling member is formed with a polygonal fastening tool contact portion. A plurality of floating holes through which the suspension member is movably passed are formed in both side regions of the slab and the beam structure corresponding to the slab;
The seismic isolation swing slab support device according to claim 2 , wherein the suspension member has a smaller diameter than the floating hole and is installed to penetrate the floating hole. The seismic isolation swing slab support device according to claim 4 , wherein the loose hole is formed as a long hole corresponding to a longitudinal direction or a width direction of the beam structure. The seismic isolation swing slab support device according to any one of claims 1 to 3 , wherein damping means is provided in either one of the edge region of the slab and the column structure facing the edge region. . 5. The seismic isolation swing slab support device according to claim 4 , wherein damping means is provided in either one of the edge region of the slab and the pillar structure facing the edge region. A seismic isolation swing slab construction method in which a slab supported by a beam structure on a column structure is suspended and supported so as to freely vibrate below the beam structure,
A slab placement step of placing the slab below the beam structure;
A support device installation step of installing a slab support device that suspends and supports the slab so as to be relatively movable relative to the beam structure;
The support device installation step includes:
A suspension member that suspends and supports the slab so as to be relatively movable on the lower surface of the beam structure;
Installing floating coupling means for movably coupling the suspension member to the slab and the beam structure;
The suspension member has a rod-like shape penetrating the slab and the beam structure so as to be freely movable, and a coupling portion to which the floating coupling means is coupled to both end regions in the longitudinal direction is formed.
The floating coupling means is coupled to a pair of floating supports having through holes through which both side end regions of the suspension member pass movably and the coupling portion of the suspension member that has passed both the floating supports. A floating coupling member that is supported so as to be relatively movable with respect to the floating support,
The floating support is a spherical, depression sphere on one side of the floating coupling member towards said floating support, corresponding to the spherical surface of the floating support is formed,
A seismic isolation swing slab construction method, wherein a floating contact body is provided between the floating support body and the slab so as to contact the floating support body in a freely movable manner. A plurality of floating holes through which the suspension member is movably passed are formed in both side regions of the slab and the beam structure corresponding to the slab;
The seismic isolation swing slab construction method according to claim 8 , wherein the suspension member has a smaller diameter than the floating hole and is installed so as to penetrate the floating hole. The seismic isolation swing slab construction method according to claim 9 , wherein the loose hole is formed in a long hole corresponding to a longitudinal direction or a width direction of the beam structure. 9. The seismic isolation swing slab construction method according to claim 8 , wherein damping means is provided in either one of the edge region of the slab and the pillar structure facing the edge region. 10. The seismic isolation swing slab construction method according to claim 9 , wherein damping means is provided in either one of the edge region of the slab and the pillar structure facing the edge region.

Images