JP6091200B2 - Form material for floating stand and construction method of floating stand structure - Google Patents

Description

  In particular, the present invention relates to a frame material for a floating base that forms a space in which a base isolation device slides between a lower foundation and an upper foundation of the base isolation base structure, and a construction method for the floating base structure.

As a base isolation structure for detached houses, a horizontal sliding space is provided between the lower foundation in contact with the ground and the upper foundation in contact with the building, and multiple seismic isolation devices and restoration are provided in this space. Those in which members are arranged at appropriate intervals are widely used.
When constructing a space for sliding, it has been generally performed to place a jack on a lower foundation, install a formwork, and jack up to build an upper foundation.
However, since the position of the seismic isolation device is directly below the column that receives the vertical load of the building, especially as a space for sliding in the lower part of the column, the vertical space should be set as small as possible, such as a sliding bearing. A technique that enables use of a seismic isolation device having a low height has been proposed (for example, Patent Document 1).

In Patent Document 1, when a space for sliding the seismic isolation device is formed between the lower foundation and the upper foundation of the seismic isolation foundation structure, the seismic isolation device is placed on the upper surface of the lower foundation after the lower foundation is built. At the same time, a granular material such as sand is spread at a predetermined height around the seismic isolation device at a predetermined interval, and a mold is placed on each upper surface of the seismic isolation device and the granular material to build an upper foundation. Thereafter, the granular material is caused to flow out with high-pressure washing water, and the mold on the granular material is removed.
According to the invention of Patent Document 1, since a jack for lifting the formwork is not used, the base isolation structure can be made compact in the vertical direction, and the excavation depth can be reduced accordingly.

Japanese Patent No. 472292

  However, in the invention of Patent Document 1, after the upper foundation is built, the granular material is caused to flow out by the high-pressure washing water, so that equipment for high-pressure washing water is required. A technique capable of forming a space for sliding has been desired.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a floating stand mold capable of constructing a space for sliding an isolation device in a base isolation structure of a building with simple equipment. It is providing the construction method of a frame material and a floating mount structure.

  According to a first aspect of the present invention, there is provided a frame material for a floating base that forms a space in which a seismic isolation device is slidable between a lower foundation and an upper foundation of a building, and is mounted on the lower foundation. A plurality of long supports placed on the plurality of long supports, and a plate placed on the plurality of long supports, the long supports placed on the lower foundation, A lower member provided on the upper surface with a first inclined surface inclined along the longitudinal direction of the scale support, and placed on the lower member so as to be in contact with the first inclined surface on the lower surface. An upper member having a second inclined surface, and the first member of the upper member and the lower member that is pulled out from the space is a drawer jig for attaching a drawer jig that pulls out the member This is solved by providing the mounting portion.

Because it is configured in this way, after building the upper foundation, by pulling out a plurality of long supports and plates, it is possible to form a space where the seismic isolation device can slide, with simple equipment, simply, A space where the seismic isolation device can slide is formed.
In addition, the long support is placed on the lower base, and is stacked on the lower member and the lower member having a first inclined surface inclined along the longitudinal direction of the long support on the upper surface. An upper member having a second inclined surface that is placed on the lower surface and abuts the first inclined surface, first pulls out either the lower member or the upper member, and then the other By pulling out, the long support can be easily removed. In addition, since the lower member and the upper member are provided with the first inclined surface and the second inclined surface, respectively, the first inclined surface and the second inclined surface are guided when the member to be pulled out first is pulled out. The member to be pulled out can be pulled out smoothly.
Of the upper member and the lower member, the member that is first withdrawn from the space has a pull-out jig mounting portion for mounting a pull-out jig for pulling out the member, and therefore receives a load from the upper foundation of the building. Thus, even when the upper member or the lower member cannot be pulled out with bare hands, the upper member or the lower member can be easily pulled out with a small force by attaching the drawer jig to the drawer jig mounting portion.

At this time, a plurality of sets of the upper member and the lower member are arranged on the lower base of the space in a state where the upper member is overlapped on the lower member, Dividing plates divided into a plurality of bodies are arranged side by side, and the lower end line of the abutting surface where the adjacent pair of the dividing plates abut each other is within the range of the upper surface of the upper member. Is preferred.
Since it is configured in this way, after the upper member and the lower member are pulled out from the space, the divided plate can be pulled out one by one, so that the entire plate body can be taken out, and the taking out operation is easy. Become.
Moreover, since the lower end line of the contact surface where a pair of adjacent dividing plates contact each other is included in the range of the upper surface of the upper member, the dividing line dividing the plate is supported by the upper member, The plate body can be prevented from drooping in the space, and the role of the plate body as a mold material can be secured.

In this case, among the divided plate multiple, the first side of the dividing plate which is first pulled out, the opening side for pulling out the upper member and the lower member from said space, from the opposite side of the opening However, it is preferable that it is inclined with respect to the opening so as to be far from the center of the first divided plate.
Since it comprises in this way, the opening side which takes out a division board becomes wide, and the 1st division board can take out a 1st division board smoothly.

Further, the side surface of the first divided plate includes an engaging portion that engages with a side surface of another adjacent divided plate, and the engaging portion is the other divided portion of the side surface of the first divided plate. It is preferable to restrict the vertical movement relative to the side surface of the plate.
Since it comprises in this way, a division | segmentation board will mutually engage and even if the edge part of a division | segmentation board slip | deviates from the upper surface of an upper side member, it can prevent drooping in space.

Further, the lower member and the upper member, the one longitudinal end provided with a thin tip thicknesses, the other end is provided with a thick walled end thicknesses, the thick end Formed from a wedge-shaped elongated body formed so that the thickness gradually decreases from a portion to the distal end portion, and the elongated support body includes the distal end portion and the thick wall of the lower wedge-shaped elongated body. the end, so that the thick end portion and said distal end portion of an upper side of the wedge long body overlap each said superposed the upper wedge long body on the lower side of the wedge-shaped long body on configuration The upper or lower wedge-shaped elongated body is disposed such that the thick end portion is positioned on the opening side, and the drawer jig attaching portion is provided on the thick end portion side. Further, it is preferable that the pull-out jig includes a locking hole for locking.

Thus, the lower member and the upper member are provided with a thin tip portion at one end in the longitudinal direction and a thick thick end portion at the other end, from the thick end portion. It is formed from a wedge-shaped elongated body formed so that the thickness gradually decreases toward the tip, and the long support is formed on the tip and thick ends of the lower wedge-shaped elongated body. Since the upper wedge-shaped elongated body is overlaid on the lower wedge-shaped elongated body so that the thick-walled end and the tip of the elongated body overlap each other, the lower wedge-shaped elongated body is drawn out. Sometimes, the inclined surface of the upper surface of the lower wedge-shaped elongated body is guided by the lower surface of the upper wedge-shaped elongated body, so that the lower wedge-shaped elongated body can be pulled out smoothly.
In addition, since the lower member and the upper member are in contact with each other in the region between the both ends of the lower member and the upper member, once a force for pulling out one of the lower member and the upper member is applied, the lower member and the upper member The entire length of the inclined surface becomes a slide surface, and the member can be pulled out smoothly without being caught on the way.
Further, since the upper or lower wedge-shaped elongated body is disposed so that the thick end portion is positioned on the opening side for drawing the wedge-shaped elongated body from the space, the upper and lower wedge-shaped elongated bodies are arranged. Of these, the wedge-shaped elongated body can be pulled out first by positioning the thick end of the wedge-shaped elongated body to be pulled out first on the opening side.
In addition, since the drawer jig mounting part has a locking hole for locking the drawer jig provided on the thick-walled end side, a wedge-like length can be obtained simply by locking the drawer jig to the locking hole. It can be attached to the scale and workability is good.

Further, at least one of the upper and the lower wedge long body, the thick end portion side of the side surface of the long side direction, it is preferable that includes the locking hole.
With this configuration, the drawer jig can be inserted into the space along the side surface of the wedge-shaped elongated body, applied to the side surface and locked in the locking hole, and then pulled out. Therefore, the drawing operation is simplified, and the workability can be improved as compared with the case where a locking hole is provided on the front surface of the wedge-shaped elongated body.

Further, at least one of the upper and lower wedge-shaped elongated bodies includes the engagement holes on the pair of side surfaces, respectively, and the pair of engagement holes provided on the pair of side surfaces includes the It is suitable if it is formed at a position spaced the same distance from the thick end.
With this configuration, the locking portion of the drawer jig can be inserted into a pair of locking holes provided on the left and right side surfaces, and the tensile force from the drawer jig can be Since it can transmit equally to the right and left of a body, it becomes possible to pull out a wedge-shaped elongate body efficiently with small force.

Moreover, one of said upper and said lower wedge long body is the surface abutting the other of the wedge long body when superposed, comprising a protrusion extending in the long side direction, of the other It is preferable that the wedge-shaped long body is provided with a groove capable of accommodating the convex portion on a surface that comes into contact with the one wedge-shaped long body when being stacked.
By configuring in this way, the upper and lower wedge-shaped elongated bodies can be engaged with each other, so that a pair of wedge-shaped elongated bodies are stacked on the lower foundation, and the plate body is placed thereon When performing the above, it is possible to prevent the upper wedge-shaped elongated body from falling from the lower wedge-shaped elongated body.

The object is achieved, according to claim 9, in the isolator between the lower foundation and upper foundation of the building is a method of constructing the floating frame structure that forms a slidable space, on the lower foundation, the length A lower member having a first inclined surface inclined along the longitudinal direction of the scale support on the upper surface is placed, and an upper surface having a second inclined surface that contacts the first inclined surface on the lower surface the members, the procedure for mounting on the lower member, and by repeating a plurality of times, thereby placing the long support body consisting of the upper member and the lower member on the lower foundation, the lower on a foundation, comprising the steps of: placing the seismic isolation device, on the long support of multiple, a step of placing a plate member, on the plate member and the seismic isolation device, upper foundation Of the member that is first drawn out of the space among the upper member and the lower member. The jig mounting portion out can, by attaching a drawer jig, the first thing and a step of taking out the member drawn from the space, is solved by.

Because it is configured in this way, after building the upper foundation, by pulling out a plurality of long supports and plates, you can form a space where the seismic isolation device can slide, with simple equipment, simply A space where the seismic isolation device can slide is formed.
In addition, the long support is placed on the lower base, and is stacked on the lower member and the lower member having a first inclined surface inclined along the longitudinal direction of the long support on the upper surface. An upper member having a second inclined surface that is placed on the lower surface and abuts the first inclined surface, first pulls out either the lower member or the upper member, and then the other By pulling out, the long support can be easily removed. In addition, since the lower member and the upper member are provided with the first inclined surface and the second inclined surface, respectively, the first inclined surface and the second inclined surface are guided when the member to be pulled out first is pulled out. The member to be pulled out can be pulled out smoothly.
A step of attaching a pulling jig to a pulling jig mounting portion of a member that is first pulled out of the space out of the upper member and the lower member, and taking out the member that is first pulled out of the space; Therefore, even if the upper member or the lower member cannot be pulled out with bare hands under the load from the upper foundation of the building, the upper member or the lower member can be made smaller by attaching the drawer jig to the drawer jig mounting portion. It can be easily pulled out with force.

According to the present invention, after constructing the upper foundation, a space in which the seismic isolation device is slidable can be formed by pulling out a plurality of long supports and plates, and with a simple facility, the seismic isolation device can be formed easily. Can form a slidable space.
In addition, the long support is placed on the lower base, and is stacked on the lower member and the lower member having a first inclined surface inclined along the longitudinal direction of the long support on the upper surface. An upper member having a second inclined surface that is placed on the lower surface and abuts the first inclined surface, first pulls out either the lower member or the upper member, and then the other By pulling out, the long support can be easily removed. In addition, since the lower member and the upper member are provided with the first inclined surface and the second inclined surface, respectively, the first inclined surface and the second inclined surface are guided when the member to be pulled out first is pulled out. The member to be pulled out can be pulled out smoothly.
Of the upper member and the lower member, the member that is first withdrawn from the space has a pull-out jig mounting portion for mounting a pull-out jig for pulling out the member, and therefore receives a load from the upper foundation of the building. Thus, even when the upper member or the lower member cannot be pulled out with bare hands, the upper member or the lower member can be easily pulled out with a small force by attaching the drawer jig to the drawer jig mounting portion.

It is a schematic diagram which shows the seismic isolation base structure in which the formwork material for floating bases concerning one Embodiment of this invention is used. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external perspective view of a seismic isolation base structure in which a formwork material for a floating base according to an embodiment of the present invention is used. It is a perspective view of a wedge-shaped elongate body concerning one embodiment of the present invention. It is an isometric view explanatory drawing which shows the installation state of the wedge-shaped elongate body and plate which concern on one Embodiment of this invention. It is a plane explanatory view showing the installation state of the plate concerning one embodiment of the present invention. It is an isometric view explanatory drawing which shows the modification of the board which concerns on this invention. It is an isometric view explanatory drawing which shows the wedge-shaped elongate body which concerns on other embodiment of this invention. It is a perspective explanatory view showing the drawer jig concerning one embodiment of the present invention. It is explanatory drawing which shows the drawer jig | tool which concerns on other embodiment of this invention. It is explanatory drawing which shows the drawer | drawing-out jig which concerns on further another embodiment of this invention.

Hereinafter, a method for constructing a form material for a floating base and a structure for a floating base according to an embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a schematic view showing a base-isolated basic structure in which a formwork material for a floating base according to an embodiment of the present invention is used. FIG. 2 is an external perspective view of the seismic isolation foundation structure in which the formwork material for the floating base according to the embodiment of the present invention is used. FIG. 3 is a perspective view of a wedge-shaped elongated body according to an embodiment of the present invention. FIG. 4 is an explanatory perspective view showing an installation state of the wedge-shaped elongated body and the plate body according to the embodiment of the present invention. FIG. 5 is an explanatory plan view showing an installation state of the plate body according to the embodiment of the present invention. FIG. 6 is a perspective explanatory view showing a modification of the plate according to the present invention. FIG. 7 is a perspective explanatory view showing a wedge-shaped elongated body according to another embodiment of the present invention. FIG. 8 is a perspective explanatory view showing a drawing jig according to one embodiment of the present invention. FIG. 9 is an explanatory view showing a drawing jig according to another embodiment of the present invention. FIG. 10 is an explanatory view showing a drawing jig according to still another embodiment of the present invention.

The formwork material for a floating base according to the present embodiment is a formwork material that forms a space in which a seismic isolation device can slide between a lower foundation and an upper foundation of a lightweight building such as a detached house. It is used to construct the base isolation structure shown in FIG.
The form material for the floating gantry of the present embodiment is a form material for a floating RC (Reinforced-Concrete) gantry, and is used for the RC gantry, but is not limited to this. It is also applicable to.

<Seismic isolation structure>
The seismic isolation foundation structure 1 in which the formwork material for a floating base according to the present embodiment is used is a seismic isolation foundation structure of a detached house. The seismic isolation structure for detached houses consists of the lower foundation, the seismic isolation device, the upper foundation, and the upper structure, which is the part where residents live, and the seismic isolation basic structure 1 is shown in Figs. As shown in Fig. 2, the known lower foundation 3, which is built on the ground 2 through crushed stones, and the throwing away, the seismic isolation device 5 which is installed on the lower foundation 3, and the known upper portion which is built on the seismic isolation device 5. This is a part composed of an RC (steel reinforced concrete) mount 4 as a foundation.

  As shown in FIG. 2, a space 6 for sliding the seismic isolation device 5 is provided between the lower foundation 3 and the RC mount 4, and the seismic isolation device 5 is placed at a predetermined interval in this space 6. Has been placed. The space 6 extends in the form of a thin strip over the entire upper surface of the lower foundation 3 and the lower surface of the RC mount 4. The RC base 4 is supported by the lower base 3 via the seismic isolation device 5 without directly contacting the lower base 3 and the RC base 4.

The seismic isolation device 5 of the present embodiment is a seismic isolation device having a known slip isolation bearing, and includes a smooth plate 5a having a lubricating film formed on the lower surface serving as a sliding surface, an ethylene tetrafluoride resin, and the like. And a sliding plate 5b formed of a resin composition having excellent friction and wear performance, and is arranged so as to make the lubricating coating of the smooth plate 5a contact the sliding plate 5b.
In the present embodiment, the smooth plate 5a and the sliding plate 5b are made of rectangular plates having the same planar shape, and are placed on the lower foundation 3 so as to overlap each other. The length in the width direction of the space 6 between the smooth plate 5 a and the sliding plate 5 b is formed slightly shorter than the width of the space 6.

<Form material for floating mount>
In this embodiment, in order to form the space 6 between the lower foundation 3 and the RC mount 4, a floating mount formwork is used.
The formwork material for a floating frame according to the present embodiment includes a wedge-shaped long body 7 shown in FIGS. 3 and 4 and a plate body 8 shown in FIGS. 4 and 5.
The wedge-shaped elongate body 7 is made of metal, and has a long rectangular flat plate-like lower plate portion 71 and a U-shaped cross section, and a tapered frame whose thickness gradually decreases from one end to the other end in the longitudinal direction. The part 72 is integrally welded by welding.
In the taper frame portion 72, a long rectangular flat plate-like upper plate portion 75 and side portions 76 standing vertically from both ends in the width direction of the upper plate portion 75 are integrally formed by bending. The length of the side portion 76 gradually increases from the distal end portion 73 toward the thick end portion 74.
The wedge-shaped long body 7 as a whole has a substantially rectangular cross section, and the wedge-shaped long hollow body gradually increases in thickness from the tip 73 at one end in the longitudinal direction toward the thick end 74 at the other end. It has become.
A rectangular locking hole 77 is perforated in the pair of side portions 76 near the thick end portion 74, and a drawer used for pulling out the wedge-shaped elongated body 7 from the space 6 after the RC mount 4 is constructed. Used to lock the jigs 91, 92 and 97.

In the present embodiment, the drawer jig attachment portion of the claims is configured as the locking hole 77, but the drawer jigs 91, 92, and 97 may be configured by bolt holes or the like for bolting. Good.
Further, in the present embodiment, the thick end portion 74 is configured as a rectangular opening, so as to close the opening of the thick end portion 74, provided with a plane perpendicular to the long side direction of the wedge long body 7 It may be. A through hole penetrating this surface may be perforated, and the through hole may be configured as a drawer jig attaching portion for locking the drawer jigs 91, 92, and 97.

In the present embodiment, the same wedge-shaped elongated body 7 is used as the upper member and the lower member in the claims, but the present invention is not limited to this, and the upper member and the lower member are You may comprise from a different shape.
In addition, the upper member and the lower member of the claims include an inclined surface in which the lower member is inclined along the longitudinal direction, and the upper member is provided with an inclined surface in contact with the inclined surface, and the upper member is When stacked on the lower member, the lower surface of the upper member is lifted by the lower member and floated in the space 6 so that it does not contact the lower foundation 3. You may comprise from a different shape.

The plate body 8 is formed of a rectangular wooden plate body having the same shape as the horizontal shape of the portion sandwiched between the seismic isolation devices 5 in the space 6. The plate body 8 is divided into three in the longitudinal direction of the space 6 and is composed of three divided plates 81 to 83 as shown in FIG.
Of the three divided plates 81 to 83, the central divided plate 82 is formed in a trapezoidal shape. Ends 82a and 82b at which the central divided plate 82 contacts the divided plates 81 and 83 on both sides are arranged with respect to the width direction of the space 6 so that the opening 61 side is farther from the center of the divided plate 82 than the opposite side of the opening 61. Inclined.
Further, the dividing plates 81 and 83 disposed on the left and right sides of the dividing plate 82 are formed in a trapezoidal shape. End sides 81 a and 83 b in contact with the dividing plate 82 are inclined with respect to a direction perpendicular to the opening 61 so that the opening 61 side is closer to the center of each of the dividing plates 81 and 83 than the opposite side of the opening 61.
Further, the end sides 81 a, 82 a, 82 b, 83 b are inclined within the range of the width of the wedge-shaped long body 7.

As shown in FIG. 5, the plate body 8 of the present embodiment has the end sides 81 a, 82 a, 82 b, 83 b on the four sets of wedge-shaped long bodies 7 placed on the lower foundation 3, The sides 81a, 82a, 82b, 83b are arranged in contact with each other.
Instead of the plate body 8 of the present embodiment, a plate body 8 ′ including the division plates 81 ′ to 83 ′ of FIG. 6 may be used. In the plate body 8 ′ in FIG. 6, the left and right end sides 82 a ′ and 82 b ′ of the central dividing plate 82 ′ have stepped portions 82 c ′ and 82 d ′ protruding upward, along the entire length of the left and right end sides 82 a ′ and 82 b ′. It is formed over.
Further, on the end sides 81a 'and 83b' on the side of the center split plate 82 'of the left and right split plates 81' and 83 ', steps 81d' and 83c 'projecting downward are provided on the end sides 81a' and 83b '. Is formed over the entire length.
Accordingly, when the divided plates 81 ′ to 83 ′ are placed on the four sets of wedge-shaped elongated bodies 7 placed on the lower foundation 3, the step 81 d ′ and the step 82 d ′ are brought into contact with each other and locked together. Then, the step 83c ′ and the step 82c ′ come into contact with each other and are locked together. At this time, since the steps 81d ′ and 83c ′ of the left and right divided plates 81 ′ and 83 ′ protrude downward, both end sides 82a ′ and 82a ′ of the central divided plate 82 ′ are projected on the steps 81d ′ and 83c ′. 82b 'is supported, so that both end sides 82a' and 82b 'of the central divided plate 82' can be prevented from falling off the wedge-shaped elongated body 7 and hanging down into the space 6.
Further, since the steps 81d ', 82c', 82d ', 83c' are provided, it is possible to prevent a gap from being formed between the adjacent divided plates 82 'and the divided plates 81', 83 '. The cement paste in the concrete can be prevented from dripping into the space 6 from the gap.

Further, instead of the wedge-shaped long body 7 of the present embodiment, the wedge-shaped long bodies 78 and 79 of FIG. 7 may be used. The wedge long body 78, the center in the width direction of the upper plate portion 75, between the ends of the long side direction of the wedge-shaped elongated body, a groove 78a extending along the long side direction are formed.
Further, the wedge long body 79, the center in the width direction of the upper plate portion 75, between the ends of the long side direction of the wedge-shaped elongated body, the convex portion 79a extending along the long side direction is formed .
The width of the groove 78a is slightly wider than the width of the convex portion 79a, and the depth of the groove 78a is slightly larger than the height of the convex portion 79a. Are stacked with the upper plate portion 75 in contact with each other, the convex portion 79a is accommodated in the groove 78a with play.
In this way, by using the wedge-shaped long bodies 78 and 79, when a pair of wedge-shaped long bodies 78 and 79 are stacked on the lower foundation 3 and the plate body 8 is placed thereon, It is possible to prevent the wedge-shaped long body 79 from dropping from above the lower wedge-shaped long body 78.
The wedge-shaped long body 79 having the convex portions 79a may be stacked on the lower side, and the wedge-shaped long body 78 having the grooves 78a may be stacked on the upper side.

<Drawer jig>
FIG. 8 shows a drawer jig 91 for pulling out the wedge-shaped long body 7 from the space 6 after the RC mount 4 is built.
The drawing jig 91 of FIG. 8 is formed of a substantially U-shaped plate-like body in which an engaging portion 91a and a gripping portion 91b are vertically projected from both ends of the connecting portion 91c. The pulling jig 91 locks the engaging portion 91a through a pair of locking holes 77 provided on the left and right side portions 76 of the wedge-shaped elongated body 7 so that the gripping portion 91b is held by the operator. The wedge-shaped long body 7 is pulled out from the space 6 by pulling.

FIG. 9 shows a drawer jig 92 according to another embodiment. The drawer jig 92 is integrally welded to the drawer plate 93 having the same configuration as the drawer jig 91 of FIG. 8, the grip portion 93b of the drawer plate 93, and extends vertically from the grip portion 93b. And a U-shaped support member 95.
The support member 95 has a U-shaped cross section in which a pair of wall portions 95b are erected from both ends of the plate portion 95a, and a bolt hole 96 penetrating the plate portion 95a is formed in the center of the plate portion 95a. ing. A bolt 94 is screwed into the bolt hole 96.
9 with the bolt 94 loosened, the one wall portion 95b is brought into contact with the lower base 3 and the other wall portion 95b is brought into contact with the RC mount 4 so that the drawer plate 93 By locking a not-shown locking portion through a pair of locking holes 77 provided on the left and right side portions 76 of the wedge-shaped long body 7 and then gradually tightening the bolt 94, the wedge-shaped long The body 7 is pulled out from the space 6.
By using the pulling jig 92 of FIG. 9, even if the pulling jig 91 of FIG. 8 is too hard to pull out the wedge-shaped long body 7, the wedge-shaped long body 7 can be pulled out.

FIG. 10 shows a drawing jig 97 according to still another embodiment. The drawing jig 97 is formed of a substantially U-shaped plate-like body in which an engaging portion 97a and a gripping portion 97b are vertically projected from both ends of a long plate-like connecting portion 97c. The engaging portion 97a, the gripping portion 97b, and the connecting portion 97c are formed on the same plane, and a region continuous from the connecting portion 97c to the gripping portion 97b is formed by the engaging portion 97a, the gripping portion 97b, and the connecting portion 97c. An upright portion 97d made of a substantially rectangular plate is erected vertically from the flat surface. The upright portion 97d is welded and fixed to one surface of the connecting portion 97c so that the plane portion extends in the longitudinal direction of the connecting portion 97c.
The drawing jig 97 engages the engaging portion 97a with a pair of locking holes 77 provided in the left and right side portions 76 of the wedge-shaped elongated body 7 and locks the gripping portion 97b to the operator. The wedge-shaped long body 7 is pulled out from the space 6 by supporting it with one hand and hitting the standing portion 97d with a hammer from the side close to the engaging portion 97a.
As described above, since the connecting portion 97c is long and the standing portion 97d is provided at a position away from the engaging portion 97a, the standing portion 97d can be hit with a hammer, and the drawing jig 91 shown in FIG. Then, even when it is hard and the wedge-shaped long body 7 cannot be pulled out, the wedge-shaped long body 7 can be pulled out.

<Construction method for floating frame structure>
A method for constructing a floating pedestal structure used for a base-isolated base structure of a detached house by using the form material for the floating pedestal of the present embodiment will be described.
First, the foundation work for constructing the lower foundation 3 by placing concrete and curing it by a conventional method is performed.
Next, the seismic isolation device 5 is disposed on the lower foundation 3 at a position below each column that receives the vertical load of the building, and a concrete sag prevention mechanism is installed by a conventional method.
Next, a plurality of pairs of wedge-shaped long bodies 7 are arranged in a space 6 formed between the plurality of seismic isolation devices 5 on the lower foundation 3.

First, the wedge-shaped long body 7 is disposed on the lower foundation 3 so that the longitudinal direction is perpendicular to the opening 61 with the lower plate portion 71 facing down. At this time, the thick end portion 74 is positioned on the end side of the lower foundation 3 on the opening 61 side.
Next, another wedge-shaped elongated body 7 is placed on the wedge-shaped elongated body 7 with the lower plate portion 71 facing upward, and the tip 73 is on the thick end 74 of the lower wedge-shaped elongated body 7. The thick end portion 74 is disposed so as to overlap the tip portion 73 of the lower wedge-shaped elongated body 7. At this time, the upper surface of the lower wedge-shaped elongated body 7 is completely covered with the upper wedge-shaped elongated body 7, and all the upper surface of the lower wedge-shaped elongated body 7 is covered with the upper wedge-shaped elongated body 7. It should be positioned below the top surface.
Further, the entire upper wedge-shaped elongated body 7 is placed on the lower wedge-shaped elongated body 7 so that the lower surface of the upper wedge-shaped elongated body 7 does not contact the lower foundation 3.

As shown in FIGS. 4 and 5, a pair of wedge-shaped long bodies 7 stacked one above the other in this manner at two locations adjacent to the seismic isolation device 5 and the space 6 between the seismic isolation devices 5. Are arranged in a total of four places including two places that are divided into three equal parts in the longitudinal direction of the lower foundation 3.
Next, the plate body 8 is placed on the wedge-shaped long body 7. At this time, all the portions of the end sides 81 a, 82 a, 82 b, 83 b are placed on the upper surface of the wedge-shaped long body 7.
Thereafter, a formwork (not shown) of the RC mount 4 is installed by a conventional method, concrete is cast by a conventional method, and the RC mount 4 is built by curing and solidifying. A superstructure is built on the RC mount 4 to build a detached house.

Thereafter, the wedge-shaped long body 7 and the plate body 8 are pulled out from the space 6.
In this step, first, the engaging portion 91a of the drawer jig 91 is engaged with the engaging hole 77 of the lower wedge-shaped elongated body 7 out of the pair of wedge-shaped elongated bodies 7 stacked one above the other. By pulling the grip portion 91b, the lower wedge-shaped elongated body 7 is pulled out. By pulling out the lower wedge-shaped elongate body 7, the upper wedge-shaped elongate body 7 falls on the lower foundation 3 and a gap is formed between the plate body 8, and therefore the upper wedge-shaped elongate body 7 is manually formed. Pull out.
Similarly, all the other pair of wedge-shaped long bodies 7 are pulled out.
Thereafter, among the divided plates 81, 82, 83 constituting the plate body 8, the central divided plate 82 is pulled out. The center dividing plate 82 can be easily taken out because both end sides 82a and 82b are inclined so that the opening 61 side is wider than the opening 61 opposite side.
Subsequently, the dividing plates 81 and 83 are taken out.
After the wedge-shaped long body 7 and the plate body 8 are drawn out from all the spaces 6, the opening 61 is shielded by a shielding member such as a cover or an expansion joint, thereby completing the construction of the floating frame structure.

In this embodiment, when the lower wedge-shaped elongated body 7 is pulled out, the inclined surface that comes into contact with the upper wedge-shaped elongated body 7 serves as a guide, so that the lower wedge-shaped elongated body 7 can be pulled out smoothly. it can. Furthermore, since the cross section in the longitudinal direction of the wedge-shaped long body 7 is a substantially right-angled triangle, the inclined surface with which the lower and upper wedge-shaped long bodies 7 abut can be configured to be long. Thereby, when installed in the space 6, the wedge-shaped long body 7 can be made difficult to slide out from the opening 61, and at the same time, when the lower wedge-shaped long body 7 is pulled out, the inclined surface serving as a guide becomes long, It can be pulled out more smoothly.
In this embodiment, the thick end 74 of the lower wedge-shaped elongated body 7 and the tip 73 of the upper wedge-shaped elongated body 7 are disposed on the opening 61 side. The distal end 73 of the body 7 and the thick end 74 of the upper wedge-shaped long body 7 may be arranged on the opening 61 side, and the upper wedge-shaped long body 7 may be pulled out first.

DESCRIPTION OF SYMBOLS 1 Seismic isolation base structure 2 Ground 3 Lower foundation 4 RC mount 5 Seismic isolation device 5a Smooth plate 5b Sliding plate 6 Space 7, 78, 79 Wedge-like long body 8, 8 'Plate body 61 Opening 71 Lower plate part 72 Tapered frame part 73 End portion 74 Thick end portion 75 Upper plate portion 76 Side portion 77 Locking hole 78a Groove 79a Convex portions 81, 82, 83, 81 ', 82', 83 'Dividing plates 81a, 81b, 82a, 82b, 83a, 83b, 81a ', 82a', 82b ', 83b' End sides 81d ', 82c', 82d ', 83c' Steps 91, 92, 97 Pull-out jigs 91a, 97a Engaging portions 91b, 93b, 97b Holding portions 91c, 97c Connecting portion 93 Drawer plate 94 Bolt 95 Support member 95a Plate portion 95b Wall portion 96 Bolt hole 97d Standing portion

Claims (9)

It is a formwork material for a floating stand that forms a space in which the seismic isolation device can slide between the lower foundation and the upper foundation of the building,
A plurality of long supports placed on the lower foundation, and a plate placed on the plurality of long supports,
The long support is placed on the lower base, and a lower member having a first inclined surface inclined along the longitudinal direction of the long support on the upper surface, and on the lower member And an upper member provided with a second inclined surface that is placed on the lower surface and contacts the first inclined surface,
Of the upper member and the lower member, a member that is first pulled out of the space includes a pull-out jig mounting portion for mounting a pull-out jig for pulling out the member. Frame material. The upper member and the lower member are arranged in a plurality on the lower foundation of the space in a state where the upper member is overlapped on the lower member,
The plate body is formed by side-by-side dividing plates obtained by dividing the plate body into a plurality of pieces,
2. The formwork for a susceptor according to claim 1, wherein a lower end line of a contact surface where a pair of adjacent divided plates contact each other has a total length within a range of an upper surface of the upper member. Among the divided plate multiple, the first side of the dividing plate which is first pulled out, the opening side for pulling out the upper member and the lower member from said space, than the opposite side of said opening, said The formwork material for a floating stand according to claim 2, wherein the form material is inclined with respect to the opening so as to be far from the center of the first divided plate. The side surface of the first divided plate includes an engaging portion that engages with a side surface of another adjacent divided plate,
4. The formwork for a susceptor according to claim 3, wherein the engaging portion restricts a vertical movement of a side surface of the first divided plate with respect to a side surface of the other divided plate. The lower member and the upper member, the one longitudinal end provided with a thin tip thicknesses, the other end is provided with a thick walled end thicknesses, from the thick end It is formed from a wedge-shaped long body formed so that the thickness gradually decreases over the tip part,
The elongate support body is arranged such that the thick end portion and the tip end portion of the upper wedge-shaped elongate body overlap the tip end portion and the thick end portion of the lower wedge-shaped elongate body, respectively. the upper wedge long body is constituted by superimposed on a wedge-shaped elongated body of the lower,
The upper or lower wedge-shaped elongated body is disposed so that the thick end portion is located on the opening side,
5. The formwork material for a floating base according to claim 3, wherein the pull-out jig mounting portion includes a locking hole for locking the pull-out jig provided on the thick end portion side. . Wherein at least one of the upper and the lower wedge long body, the thick end portion side of the side surface of the long side direction, float according to claim 5, characterized in that it comprises the locking hole Mount formwork. At least one of the upper and lower wedge-shaped elongated bodies is provided with the locking holes on the pair of side surfaces,
The pair of locking holes provided in the pair of side surfaces are formed at positions spaced from the thick end portion by the same distance. Wherein one of the upper and the lower wedge long body is the surface abutting the other of the wedge long body when superposed, comprising a protrusion extending in the long side direction, the other wedge-shaped length The scale according to any one of claims 5 to 7, wherein the scale includes a groove capable of accommodating the convex portion on a surface that abuts on the one wedge-shaped long body when the scale is overlapped. Formwork material. A construction method of a floating structure that forms a space in which a seismic isolation device can slide between a lower foundation and an upper foundation of a building,
On the lower foundation, the lower member having a first inclined surface inclined in the longitudinal direction of the long substrate on the top surface is placed on the lower surface, in contact with the second to the first inclined surface of the upper member having an inclined surface, the steps of placing on said lower member, by repeating a plurality of times, the long support body consisting of the lower side member and the upper member on the lower foundation And placing the seismic isolation device on the lower foundation ,
Over the long support multiple, the step of mounting the plate body,
Constructing an upper foundation on the plate and the seismic isolation device;
A step of attaching a drawer jig to a drawer jig mounting portion of a member that is first pulled out of the space among the upper member and the lower member, and taking out the member that is first pulled out of the space. The construction method of the floating mount structure characterized by this.

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