Object installation method

Abstract

To provide an object installation method that can ensure higher filling properties of a filler filled between a concrete body and an object.SOLUTION: An object installation method comprises: a first step of installing an annular plate; a second step of pouring concrete to form a concrete body with an annular plate on an upper surface; a third step of installing an enclosing frame body so that the inside of the enclosing frame body does not protrude beyond the outer peripheral edge of the annular plate; a fourth step of filling a filler at a position inward from the inner peripheral edge of the enclosing frame body; a fifth step of removing the enclosing frame body directly upward; a sixth step of placing an object on the annular plate while crushing the filler from above with the underside of the object before the filler solidifies; and a seventh step of determining whether the crushed filler protrudes outward.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a method for placing an object on a concrete body. [Background technology]

[0002] A method for placing an object on a concrete body has been known in which a filler is poured inward from the inner peripheral edge of an annular plate placed on the concrete body in a mountain-like shape, and before the filler hardens, an object such as a seismic isolation device is placed on the object, and the object is placed by crushing the filler from above with the flat lower surface of the object (see, for example, Patent Document 1). In this object placement method, the object crushes the filler from above, causing the filler to spread radially over the upper surface of the concrete body, and the filler is provided between the lower surface of the object and the upper surface of the concrete body and the upper surface of the annular plate. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-59686 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, when the filler is poured in a mountain-like pile on top of the concrete body, it spreads radially over the upper surface of the concrete body when it is crushed from above by an object, so that, for example, if the bottom surface of the annular plate or the object is rectangular, there is a risk that the filler will not be filled into every corner between the bottom surface of the object and the top surface of the concrete body and the top surface of the annular plate. Also, if the filler piled up in a mountain-like pile is spread out with a trowel or the like to make it easier to fill, the trowel unevenness creates an uneven surface, which allows air to get in when the object is attached, creating voids and reducing the filling rate.

[0005] The present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide a method for installing an object that can ensure higher filling properties of the filler that is filled between the concrete body and the object. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides a method for installing an object on a concrete body, the method comprising the steps of: a first step of installing an annular plate having a predetermined thickness such that an upper surface of the annular plate is located at a predetermined height; A second step of forming the concrete body by pouring concrete so that the upper surface of the concrete body is located at a position lower than the height of the upper surface of the annular plate by a predetermined dimension that is smaller than the predetermined thickness; a third step of installing the surrounding frame body after the concrete body has solidified so that the inside of the surrounding frame body does not protrude beyond the outer periphery of the annular plate; A fourth step of pouring a filler into a position inside an inner peripheral edge of the surrounding frame body; A fifth step of removing the surrounding frame body in a vertically upward direction; a sixth step of placing a lower plate member constituting a lower portion of the object on the annular plate while crushing the filler from above with a lower surface of the lower plate member before the filler solidifies; and a seventh step of determining whether or not the crushed filler protrudes outward from the outer circumferential edge of the annular plate or the outer circumferential edge of the lower plate member. Other features of the present invention will become apparent from the following detailed description of the present invention and the accompanying drawings. Effect of the Invention

[0007] According to the present invention, it is possible to ensure higher filling properties of the filler filled between the concrete body and the object. [Brief description of the drawings]

[0008] [Figure 1]FIG. 1 is a conceptual diagram of a seismic isolation device applied to a building. [Diagram 2] FIG. 2(a) is a perspective view showing the state in which the annular plate is installed, and FIG. 2(b) is a perspective view showing the constructed concrete foundation. [Diagram 3] FIG. 3(a) is a perspective view showing the state in which the first filling material has been poured, and FIG. 3(b) is a perspective view showing the state in which the frame body has been installed. [Figure 4] FIG. 4(a) is a perspective view showing a state in which the second filling material has been poured, and FIG. 4(b) is a perspective view showing a state in which the framework has been removed. [Diagram 5] FIG. 2 is an explanatory diagram of a method for installing laminated rubber. [Figure 6] FIG. 6(a) is a perspective view showing a state in which the filler is protruding, and FIG. 6(b) is a perspective view showing the laminated rubber after installation is completed. [Figure 7] Figure 7(a) is a cross-sectional view showing the constructed foundation concrete, Figure 7(b) is a cross-sectional view showing the state after the first filler material has been poured, Figure 7(c) is a cross-sectional view showing the state after the frame body has been installed, and Figure 7(d) is a cross-sectional view showing the state after the second filler material has been poured. [Figure 8] Figure 8(a) is a cross-sectional view showing the state with the frame removed, Figure 8(b) is a cross-sectional view showing the state where the lower flange plate abuts the second filler, Figure 8(c) is a cross-sectional view showing the state where the second filler is crushed, and Figure 8(d) is a cross-sectional view showing the state where the filler is protruding. [Figure 9] Figure 9(a) is an oblique view showing a concrete foundation on which an annular plate for a linear rolling support is installed, and Figure 9(b) is an oblique view showing the state in which a first filler material has been poured into the opening of the annular plate for a linear rolling support. [Figure 10] Figure 10(a) is an oblique view showing the state in which a frame body for a linear rolling support is installed, and Figure 10(b) is an oblique view showing the state in which a second filler material has been poured into the frame body for a linear rolling support. [Figure 11] FIG. 4 is a perspective view showing a state in which a frame body for a linear motion rolling support is removed. [Figure 12]Figure 12(a) is a cross-sectional view showing the state after a first filler has been poured into the opening of the annular plate for the linear rolling bearing, Figure 12(b) is a cross-sectional view showing the state after the frame body for the linear rolling bearing has been installed, Figure 12(c) shows the state after a second filler has been poured into the frame body for the linear rolling bearing, Figure 12(d) is a cross-sectional view showing the state after the frame body for the linear rolling bearing has been removed, and Figure 12(e) is an oblique view showing the completed installation. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] At least the following points will become apparent from the following specification and drawings. Aspect 1: A method for installing an object on a concrete body, comprising: a first step of installing an annular plate having a predetermined thickness such that an upper surface of the annular plate is located at a predetermined height; A second step of forming the concrete body by pouring concrete so that the upper surface of the concrete body is located at a position lower than the height of the upper surface of the annular plate by a predetermined dimension that is smaller than the predetermined thickness; a third step of installing the surrounding frame body after the concrete body has solidified so that the inside of the surrounding frame body does not protrude beyond the outer periphery of the annular plate; A fourth step of pouring a filler into a position inside an inner peripheral edge of the surrounding frame body; A fifth step of removing the surrounding frame body in a vertically upward direction; a sixth step of placing a lower plate member constituting a lower portion of the object on the annular plate while crushing the filler from above with a lower surface of the lower plate member before the filler solidifies; and a seventh step of determining whether the crushed filler protrudes outward from the outer peripheral edge of the annular plate or the outer peripheral edge of the lower plate member.

[0010] According to the method for installing an object of the first aspect, after the concrete body on which the object is to be installed has solidified, the filler is poured into a position inside the inner peripheral edge of the surrounding frame body installed on the concrete body, and then the surrounding frame body is removed in a vertically upward direction, so that the filler can be poured into the desired shape formed by the surrounding frame body on the concrete body. Then, the filler of the desired shape piled on the concrete body is crushed from above by the lower surface of the lower plate member forming the lower part of the object before solidification, and the lower plate member is placed on the filler crushed by the annular plate, so that the filler having fluidity before solidification is easily and quickly crushed by the weight of the object and spreads in a substantially rectangular shape on the upper surface of the concrete body.

[0011] This allows the filler to be densely packed with almost no gaps between the bottom surface of the lower plate member of the object and the top surface of the concrete body and the top surface of the annular plate. This makes it possible to increase the degree of adhesion of the bottom surface of the lower plate of the object. This makes it possible to ensure higher packing properties of the filler filled between the concrete body and the object.

[0012] In addition, since it is determined whether the crushed filler protrudes beyond the outer periphery of the annular plate or the outer periphery of the lower plate member, it is possible to confirm that the filler is in almost intimate contact with the entire area between the lower plate member and the upper surface of the concrete body and the upper surface of the annular plate. At this time, if the annular plate and the lower plate member are completely flat, the lower plate member and the annular plate will abut against each other.

[0013] Aspect 2: A method of installing an object as described in Aspect 1, characterized in that it has a first filler poured onto an upper surface of the concrete body, the upper surface of the first filler coinciding with the upper surface of the annular plate, and the filler is a second filler poured onto the first filler at a position inward from the inner edge of the surrounding frame body.

[0014] According to the object installation method of the second aspect, the second filler is poured into a position inside the inner periphery of the surrounding frame body, on top of the first filler whose upper surface coincides with the upper surface of the annular plate, so that it spreads while being crushed on the first filler in the annular plate and its inner periphery, and protrudes outward from the outer periphery of the annular plate or the outer periphery of the lower plate member. This makes it possible to more reliably bring the entire lower surface of the lower plate member into close contact. At this time, by matching the shape of the inner periphery of the surrounding frame body to the shape of the lower surface of the annular plate or the lower plate member, the second filler can be easily filled into every corner between the annular plate and the lower plate member.

[0015] Aspect 3: The method for installing an object according to aspect 1 or aspect 2, wherein the surrounding frame is suspended across an upper surface of the annular plate.

[0016] According to the object installation method of the third aspect, the surrounding frame is hung across the upper surface of the annular plate, so the space surrounded by the surrounding frame is provided at a position higher than the upper surface of the annular plate. Therefore, by simply casting the filler inside the inner peripheral edge of the surrounding frame, it is possible to arrange the filler in a desired shape higher than the annular plate.

[0017] Aspect 4: A method for installing an object as described in any one of Aspects 1 to 3, characterized in that the area surrounded by the surrounding frame is large enough that a single worker can smooth the surface.

[0018] According to the object installation method of the fourth aspect, the area surrounded by the surrounding frame is large enough that one worker can smooth the surface, so the surface of the filler piled inside the inner periphery of the surrounding frame can be finished to a flat state without any irregularities. Therefore, when the lower plate member is placed on the annular plate, the lower plate member can be tightly attached to the upper surface of the filler without any gaps. Therefore, by spreading the filler by squashing it with the lower plate member, it is possible to more reliably attach the entire lower surface of the lower plate member to the filler.

[0019] Aspect 5: A method for installing an object as described in any one of Aspects 1 to 4, characterized in that the height of the filler contained inside the inner peripheral edge of the surrounding frame body is greater than the height obtained by dividing the volume obtained by multiplying the area of ​​the underside of the lower plate member by the height capable of absorbing unevenness in the underside of the lower plate member and the upper surface of the annular plate, by the area inside the inner peripheral edge of the surrounding frame body.

[0020] According to the object installation method of the fifth aspect, the height of the filler to be filled inward from the inner peripheral edge of the surrounding frame is set to a value larger than the volume obtained by multiplying the area of ​​the lower surface of the lower plate member by the height of 2 to 3 mm and dividing it by the area inside the inner peripheral edge of the surrounding frame, so that by placing the lower plate member on the annular plate and squashing and spreading the filler, it is possible to more reliably form a layer of filler of a height that can absorb unevenness of the lower surface of the lower plate member and the upper surface of the annular plate under the entire lower surface of the lower plate member. This makes it possible to more reliably bring the entire lower surface of the lower plate member into close contact.

[0021] Aspect 6: The method for placing an object according to any one of Aspects 1 to 5, wherein the outer periphery is not a perfect circle.

[0022] According to the method for installing an object of the sixth aspect, it becomes possible to install an object having a lower surface of the lower plate member that is not a perfect circle in a more reliable and intimate contact manner.

[0023] Aspect 7: The method for installing an object according to any one of Aspects 1 to 5, wherein the outer periphery is polygonal.

[0024] According to the method for installing an object of the seventh aspect, it becomes possible to install an object having a polygonal shape on the lower surface of the lower plate member in a more reliable and intimate contact therewith.

[0025] Aspect 8: A method for installing an object according to any one of Aspects 1 to 7, characterized in that the shape of the lower surface of the lower plate member and the shape of the inner peripheral edge of the surrounding frame body are approximately similar in shape.

[0026] According to the object installation method of the eighth aspect, the filler cast inward from the inner peripheral edge of the surrounding frame rises in a shape approximately similar to the shape of the lower surface of the lower plate member in a plan view, so that it is easily crushed from above by the lower surface of the lower plate member and spreads to fit the shape of the lower surface of the lower plate member. This makes it easy to fill the entire area below the lower surface of the lower plate member with the filler. ===About this embodiment=== Hereinafter, a method for installing an object according to an embodiment of the present invention will be described with reference to the drawings.

[0027] In this embodiment, an example is taken of an object being a seismic isolation device 10 interposed in the vertical direction between a building 1 and a concrete foundation 3, which is a concrete body provided on the ground G, as shown in Figure 1, and a method for installing the object by installing the seismic isolation device 10 on the concrete foundation 3 is described.

[0028] Examples of the seismic isolation device 10 include laminated rubber and sliding bearings, but in this embodiment, the laminated rubber 10 will be taken as an example for explanation. The laminated rubber 10 is made by stacking square steel plates and square rubber plates alternately one above the other and joining them together to form a main body 10a, and a rectangular upper flange plate 10b and a lower flange plate 10c are fixed to the upper end surface and the lower end surface of the main body 10a for installation on the underside of the building 1 and the upper surface of the concrete foundation 3, respectively. Here, the lower flange plate 10c corresponds to a lower plate member forming the lower part of the object.

[0029] In this embodiment, the seismic isolation device 10 is installed on the foundation concrete 3 of the building 1 through the following nine steps. (1) Installation process of the annular plate 21 (first process) (2) Construction process of foundation concrete 3 (second process) (3) Step of pouring the first filling material 31 (fourth step) (4) Installation process of the frame body 5 (third process) (5) Casting step of second filling material 31 (fourth step) (6) Removal process of the frame body 5 (fifth process) (7) Step of placing laminated rubber 10 (sixth step) (8) Step of checking for overflow of filler 31 (7th step) (9) Tightening process of mounting bolt 12

[0030] (1) Installation process of the annular plate 21 (first process) First, as shown in Fig. 2(a), reinforcing bars 4 for foundation concrete 3 are arranged in a generally rectangular shape in plan view, and an annular plate 21 is placed above the reinforcing bars 4. The annular plate 21 is a steel plate with a predetermined thickness (e.g., 19 mm) and a rectangular outer shape, with an opening 21a of a similar shape formed inside to penetrate the plate. The annular plate 21 is supported from below by a plurality of level adjustment bolts 22, and is adjusted so that the upper surface 21b is horizontal.

[0031] Bolt holes 21c for the mounting bolts 12 of the laminated rubber 10 are formed through the upper surface 21b of the annular plate 21 at a predetermined pitch along the circumferential direction. Long nuts 23, into which the mounting bolts 12 of the laminated rubber 10 are finally screwed, are fixed to the lower surface of the annular plate 21, communicating with the bolt holes 21c. An anchor bolt 24 for fixing the long nut 23 to the foundation concrete 3 is screwed into the lower part of the long nut 23.

[0032] In this embodiment, since the lower flange plate 10c of the laminated rubber 10 is rectangular in shape, the outer shape of the annular plate 21 is also roughly the same rectangular in shape, but the shape of the annular plate 21 is determined according to the shape of the lower surface of the seismic isolation device such as the laminated rubber 10. For example, when the lower flange plate 10c of the laminated rubber 10 is circular or polygonal other than rectangular, the annular plate 21 is formed in a circular or polygonal shape.

[0033] (2) Construction process of foundation concrete 3 (second process) Next, the sides of the reinforcing bars 4 are surrounded by a formwork (not shown), and concrete is poured inside the formwork to construct the concrete foundation 3 as shown in Fig. 2(b). At this time, the upper surface 3a of the concrete located inside the inner peripheral edge 21d of the annular plate 21 is leveled with a trowel or the like so that the height of the upper surface 3a of the concrete located inside is slightly (for example, 3 to 5 mm) lower than the height of the upper surface 21b of the annular plate 21 as shown in Fig. 7(a).

[0034] As a result, the lower part of the annular plate 21 is embedded in the foundation concrete 3, and only the upper part of the annular plate 21 protrudes slightly from the upper surface 3a of the foundation concrete 3. Then, after the foundation concrete 3 has hardened, the formwork is removed. Thereafter, in preparation for installing the laminated rubber 10, a guide pin 25 is screwed into the bolt hole 21c of the annular plate 21, as shown in FIG. 2(b).

[0035] (3) Step of pouring first filling material 31 (fourth step) Next, as shown in Fig. 3(a) and Fig. 7(b), the filler 31 is poured into an area inside the inner peripheral edge 21d of the annular plate 21 on the upper surface 3a of the foundation concrete 3, and the upper surface 31a of the filler 31 is leveled horizontally using a ruler, a trowel, etc. At this time, the upper surface 31a of the filler 31 is leveled so as to be flush with the upper surface 21b of the annular plate 21.

[0036] The filler 31 is a non-shrink cement, more specifically, a non-shrink cement that has thixotropy and shows high fluidity under pressure. Here, thixotropy means a property of not having fluidity when left at rest, but becoming fluid when stirred or shaken. Here, the filler 31 cast in the region inside the inner periphery 21d of the annular plate 21 corresponds to the first filler.

[0037] (4) Installation process of the frame body 5 (third process) Next, before the first filling material 31 solidifies, as shown in FIG. 3(b) and FIG. 7(c), a frame body (e.g., a wooden frame) 5 is installed as a surrounding frame body so as to be positioned on the annular plate 21 and the first filling material 31. The frame body 5 has two long frames 5a having a length that spans the portion 21e that sandwiches the opening 21a of the annular plate 21, and two short frames 5b fixed between the two long frames 5a that face each other with a gap between them so as to connect the long frames 5a. The two short frames 5b face each other with a gap in the longitudinal direction of the long frame 5a, and the two long frames 5a and the two short frames 5b form a frame main body portion 5c into which the second filling material 31 is cast. The inner peripheral surfaces of the two long frames 5a and the two short frames 5b are both vertical surfaces.

[0038] The frame body 5c has a rectangular shape smaller than the opening 21a of the annular plate 21. At this time, the area of ​​the inner peripheral edge 5d of the rectangular frame body 5c is smaller than the area of ​​the opening 21a of the annular plate 21, and the planar shape of the inside of the frame body 5c and the planar shape of the opening 21a are approximately the same shape. In addition, the shape of the inner peripheral edge 5d of the frame body 5c and the shape of the lower surface 10f of the lower flange plate 10c are approximately similar shapes. Here, the approximately similar shape may be, for example, an approximately square shape if the shape of the lower surface of the lower plate member is a square, or a rectangle of a shape close to that if the shape is a rectangle. For example, when the inner peripheral edge of the frame body is arranged so as to follow the longitudinal direction of the rectangle formed by the lower surface of the lower flange plate, it may be to the extent that the longitudinal direction of the rectangular shape of the inner peripheral edge of the frame body can be clearly confirmed. In addition, even if the corners of the rectangle formed by the lower surface of the lower flange plate are chamfered, the shape of the inner peripheral edge of the frame body may be a rectangle having corners.

[0039] The frame 5 is disposed so as to be located approximately in the center of the frame main body 5c with the long frame 5a spanning the portion 21e that sandwiches the opening 21a of the annular plate 21. The lower surface of the frame 5 abuts against the upper surface 31a of the first filler 31 and the upper surface 21b of the annular plate 21, and the lower side of the frame main body 5c is blocked by the first filler 31.

[0040] (5) Casting step of second filling material 31 (fourth step) Next, before the filling material 31 solidifies, as shown in Fig. 4(a) and Fig. 7(d), the second filling material 31 is poured into an area inside the inner peripheral edge 5d of the frame main body 5c, and the upper surface 31b of the second filling material 31 is leveled horizontally using a ruler, a trowel, etc. At this time, in order to finish the upper surface 31b of the second filling material 31 more flatly, the area inside the frame main body 5c is set to a size that allows one worker to more accurately level it flat with a trowel, etc.

[0041] Here, the same filler 31 is used for the first filler 31 and the second filler 31. In the present embodiment, an example has been described in which the installation step of the framework 5 is performed between the pouring step of the first filler 31 and the pouring step of the second filler 31, but the present invention is not limited to this. For example, the installation step of the framework 5 may be performed after the construction step of the foundation concrete 3, and then the pouring steps of the first filler 31 and the second filler 31 may be performed.

[0042] (6) Removal process of the frame body 5 (fifth process) Next, as shown in Figures 4(b) and 8(a), the frame 5 is lifted upward and removed. At this time, the frame 5 is pulled straight up, and the shape of the second filler 31 inside the frame main body 5c becomes a mountain shape with the end flowing and the apex at the center. At this time, the first filler 31 is filled inside the annular plate 21 flush with the upper surface 21b of the annular plate 21, and the second filler 31 with a flat upper surface rises in the shape of a mountain with the apex at the center at approximately the center of the first filler 31.

[0043] (7) Step of placing laminated rubber 10 (sixth step) Next, a release agent is applied to the underside 10f of the lower flange plate 10c of the laminated rubber 10, and the laminated rubber 10 is lowered from above so that each bolt hole 10d of the lower flange plate 10c is aligned with the position of each guide pin 25 of the annular plate 21, as shown in Fig. 5. Then, the laminated rubber 10 is placed on the annular plate 21 while the guide pins 25 are passed through the bolt holes 10d, as shown in Fig. 5.

[0044] In the process of placing the laminated rubber 10 on the annular plate 21, the second filler 31 is crushed by the flat lower surface 10f of the lower flange plate 10c of the laminated rubber 10, as shown in Figures 8(b) and 8(c). At this time, the filler 31, which has thixotropy and high fluidity under pressure, maintains a raised state as shown in Figure 8(b) due to its low fluidity until it is crushed, but once it begins to be crushed, it develops high fluidity and easily and quickly spreads out continuously in an almost rectangular shape from the center of the upper surface 3a of the foundation concrete 3 in all directions without interruption, as shown in Figure 8(c), even with the weight of the laminated rubber 10.

[0045] 8(c), the filler 31 is densely packed with almost no gaps between the lower surface 10f of the lower flange plate 10c of the rubber laminate 10 and the upper surface 21b of the annular plate 21 and the first filler 31, so that the lower surface 10f of the lower flange plate 10c of the rubber laminate 10 is tightly adhered over almost the entire surface. In other words, the degree of adhesion of the lower surface 10f of the lower flange plate 10c of the rubber laminate 10 can be increased. Note that the first filler 31 is not solidified, so no boundary is formed between the first filler 31 and the second filler 31.

[0046] In this way, the amount of the second filler 31 is preset according to the height of the frame 5 so that the lower surface 10f of the lower flange plate 10c of the laminated rubber 10 is in close contact with the entire surface of the laminated rubber 10. Specifically, in order to interpose the second filler 31 at a desired height H1 (e.g., 2 to 3 mm) between the lower surface 10f of the lower flange plate 10c of the laminated rubber 10 and the annular plate 21 and the first filler 31 so that the entire area of ​​the lower flange plate 10c of the laminated rubber 10 is in close contact with the lower surface 10f of the lower flange plate 10c of the laminated rubber 10, the second filler 31 is required to have a volume (hereinafter, referred to as the required volume V1, V1 = H1 x S1) which is the product of the area of ​​the lower surface 10f of the lower flange plate 10c (hereinafter, referred to as the lower surface area S1) and the desired height H1 (not shown). 8(d) shows an ideal state in which the upper surface 21b of the annular plate 21 and the lower surface 10f of the lower flange plate 10c are completely flat and the upper surface 21b of the annular plate 21 and the lower surface 10f of the lower flange plate 10c abut against each other. In reality, due to unevenness between the upper surface 21b of the annular plate 21 and the lower surface 10f of the lower flange plate 10c, there are some areas where the upper surface 21b of the annular plate 21 and the lower surface 10f of the lower flange plate 10c abut and some areas where they do not abut, and these gaps are filled with the second filler 31. The maximum height of the gap caused by the unevenness at this time becomes the minimum value of the desired height H1.

[0047] Since the second filling material 31 is poured into the frame body 5c of the frame body 5 arranged on the first filling material 31, the volume inside the frame body 5c of the frame body 5 with the first filling material 31 as the bottom needs to be equal to or larger than the required volume V1. In other words, the product of the inner area of ​​the frame body 5c (hereinafter referred to as the inner area S2) and the height H2 of the frame body 5c (see FIG. 7(d)) ​​needs to be at least equal to the required volume V1.

[0048] In addition, the frame 5 is set so that the second filler 31 protrudes outward from the outer periphery of the lower flange plate 10c so that it can be visually confirmed that the second filler 31 is filled over the entire surface of the lower surface 10f of the lower flange plate 10c of the laminated rubber 10, and so that the second filler 31 has a volume larger than the required volume V1 (hereinafter, referred to as a desired volume V2, V2>V1). At this time, since it is necessary to flatten the upper surface of the second filler 31 with greater precision, the inner surface area S2 of the frame main body 5c of the frame 5 is set to a size that can be accurately leveled by one worker with a trowel or the like, and the height H2 of the frame main body 5c is set to a height obtained by dividing the desired volume V2 by the inner surface area S2 of the frame main body 5c (H2=V2 / S2).

[0049] (8) Step of checking for overflow of filler 31 (7th step) Next, it is confirmed whether the second filler 31 is densely filled over the entire area where the upper surface 3a of the foundation concrete 3 and the upper surface 21b of the annular plate 21 overlap with the lower surface 10f of the lower flange plate 10c. This confirmation is performed by visually judging whether the second filler 31 protrudes outward from the outer peripheral edge 21f of the annular plate 21 or the outer peripheral edge 10e of the lower flange plate 10c over the entire circumference of the annular plate 21, as shown in Fig. 6(a) and Fig. 8(d). Note that the reason why the outer peripheral edge 21f of the annular plate 21 or the outer peripheral edge 10e of the lower flange plate 10c is used here is because, when the outer dimensions of the annular plate 21 and the lower flange plate 10c are different, it is sufficient that the second filler 31 protrudes from the smaller of the outer peripheral edge 21f of the annular plate 21 or the outer peripheral edge 10e of the lower flange plate 10c.

[0050] If even a portion of the entire circumference does not protrude, it is determined that the degree of adhesion of the underside 10f of the lower flange plate 10c is low, and the process is started again from the above step (3), "the step of pouring the first filler", by lifting the laminated rubber 10 and removing it from the foundation concrete 3, and removing the first and second fillers 31 on the foundation concrete 3. On the other hand, if there is protrusion around the entire circumference, it is determined that the degree of adhesion of the underside 10f of the laminated rubber 10 is high, and the process moves to the next step, "the step of tightening the mounting bolts".

[0051] (9) Tightening process of mounting bolt 12 Finally, the guide pins 25 are removed from the bolt holes 21c of the annular plate 21 and the bolt holes 10d of the lower flange plate 10c, and instead, as shown in Figure 6(b), the mounting bolts 12 are inserted through the bolt holes 21c, 10d and screwed into the long nuts 23 on the underside of the annular plate 21 to tighten them, and the protruding filler 31 is wiped off and cleaned. This completes the installation of the laminated rubber 10 on the foundation concrete 3.

[0052] According to the method for installing an object of this embodiment, the filler 31 is poured into a position inside the inner peripheral edge 5d of the frame body 5 installed on the first filler 31, which is filled within the inner peripheral edge 21d of the annular plate 21 provided on the upper surface of the foundation concrete 3 on which the laminated rubber 10 as the object is to be installed and whose upper surface coincides with the upper surface 21d of the annular plate 21, and then the frame body 5 is removed directly upward, so that the second filler 31 can be filled on top of the first filler 31 in the desired shape formed by the frame body 5.

[0053] Then, the second filler 31 of the desired shape piled on top of the first filler 31 is crushed from above by the lower surface 10f of the lower flange plate 10c forming the lower part of the laminated rubber 10 while the lower flange plate 10c is placed on the annular plate 21 before solidifying, so that the second filler 31, which has fluidity before solidifying, is easily and quickly crushed by the weight of the laminated rubber 10 and spreads out over the annular plate 21 while blending with the first filler 31 and retaining approximately its outer shape.

[0054] Therefore, the first filler 31 and the second filler 31 can be distributed almost without gaps over the entire area between the lower surface 10f of the lower flange plate 10c of the laminated rubber 10 and the upper surface 3a of the foundation concrete 3 and the upper surface 21b of the annular plate 21, and the filler 31 can be densely filled. This makes it possible to increase the degree of adhesion of the lower surface 10f of the lower flange plate 10c of the laminated rubber 10. This makes it possible to ensure higher filling properties 31 of the filler 31 filled between the foundation concrete 3 and the laminated rubber 10.

[0055] In addition, it is determined whether the crushed second filler 31 protrudes outward from the outer peripheral edge 21f of the annular plate 21 or the outer peripheral edge 10e of the lower flange plate 10c, so it is possible to confirm that the entire area between the upper surface 3a of the foundation concrete 3 inside the annular plate 21 and the upper surface 21b of the annular plate 21 is securely in close contact with the filler 31.

[0056] In addition, since the frame body 5 is suspended across the upper surface 21b of the annular plate 21, the space within the frame main body portion 5c surrounded by the frame body 5 is provided at a position higher than the upper surface 21b of the annular plate 21. Therefore, by simply casting the second filler 31 into the inner peripheral edge 5d of the frame body 5, it is possible to fill the second filler 31 in a desired shape higher than the annular plate 21.

[0057] In addition, the area inside the frame body 5c surrounded by the frame 5 is large enough that one worker can smooth the surface, so that the upper surface 31b of the second filler 31 cast inward from the inner peripheral edge 5d of the frame body 5c can be finished to a flatter state without any irregularities. When the frame 5 is pulled up and removed, the second filler 31 has a mountain shape with the apex at the center, so that when the laminated rubber 10 is placed on the annular plate 21, the second filler 31 is expanded by the lower flange plate 10c while pushing out air from the center, so that it can be tightly attached without entraining air.

[0058] Furthermore, the height H2 of the second filler 31 filled in a position inside the inner peripheral edge 5d of the frame main body portion 5c is characterized by being a value obtained by multiplying the area S1 of the underside 10f of the lower flange plate 10c by a height of 2 to 3 mm, and dividing the volume by the area inside the inner peripheral edge of the surrounding frame body.

[0059] The required volume V1 of the second filler 31 to be filled under the lower flange plate 10c is the required volume V1 obtained by multiplying the area S1 of the lower surface 10f of the lower flange plate 10c by the desired height H1 of the second filler 31 after the laminated rubber 10 is installed, that is, the height H1 capable of absorbing the unevenness of the lower surface 10f of the lower flange plate 10c and the upper surface 21b of the annular plate 21. The desired volume V2 of the second filler 31 to be filled in the inner peripheral edge 5d blocked by the first filler 31 is set to be larger than the required volume V1, and the value obtained by dividing the desired volume V2 by the area S2 inside the inner peripheral edge 5d of the frame main body 5c is set as the height H2 of the frame main body 5c in the frame 5. Therefore, by placing the lower flange plate 10c on the annular plate 21 and squashing and spreading the second filler 31, it becomes possible to more reliably form a layer of the second filler 31 of the desired height H1 described above under the entire lower surface 10f of the lower flange plate 10c. This makes it possible to more reliably bring the entire lower surface 10f of the lower flange plate 10c into tight contact with each other.

[0060] In the above embodiment, the shape of the lower surface 10f of the lower flange plate 10c is rectangular, but the present invention is not limited to this. For example, the shape of the lower surface 10f of the lower flange plate 10c may be any shape, such as a perfect circle, a non-perfect circle, or a polygonal shape such as a hexagon or octagon. In addition, it is preferable that the shape of the inner peripheral edge of the frame is approximately similar to the shape of the lower surface of the lower flange plate.

[0061] In the above embodiment, the laminated rubber 10 is taken as an example of the seismic isolation device, and an annular plate 21 having one rectangular opening 21a is used according to the shape of the lower surface 10f of the lower flange plate 10c of the laminated rubber 10. However, the present invention is not limited to this, and may be, for example, a linear rolling bearing (CLB) 32 or an elastic sliding bearing. For example, when a linear rolling bearing (CLB) 32 is installed as the seismic isolation device, the length in the moving direction is long because the CLB slides in a predetermined direction, and the annular plate 33 is long in the moving direction and has a central plate portion 33a connecting the center of the short side direction perpendicular to the moving direction, as shown in FIG. 9(a). This annular plate 33 has openings 33b on both sides of the central plate portion 33a, and the first filler 31 is filled in both of the two openings 33b as shown in FIG. 9(b) and FIG. 12(a).

[0062] In this way, when the vertical and horizontal dimensions are significantly different in the direction of movement, it is difficult to achieve close contact with the entire surface of the underside 32a of the linear rolling bearing 32 simply by pouring the second filler 31 into approximately the center of the annular plate 33, as in the case of the laminated rubber 10 described above.

[0063] For this reason, when installing the linear rolling bearing (CLB) 32, a frame 34 is used, as shown in Fig. 10, whose longitudinal length is approximately the same as the longitudinal length of the annular plate 33 and whose lateral width is slightly wider than the width of the central plate portion 33a, for example. In this case, the lateral width of the frame 34 is set to a width that allows one worker to flatten the surface. This makes it possible to flatten the entire inner surface of the frame 34 even if the longitudinal length is long.

[0064] 10(a) and 12(b), the frame 34 is disposed approximately in the center of the short side of the annular plate 33 with the longitudinal direction of the frame 34 aligned with the longitudinal direction of the annular plate 33. At this time, the frame 34 is disposed so that the inner peripheral edge 34a of the frame 34 is positioned inside the outer peripheral edge 33c of the annular plate 33. The bolt holes formed in the central plate portion 33a are blocked with set screws, tape, or the like, but are omitted in FIGS. 9 and 10.

[0065] Then, after the second filler 31 is poured into the frame body 34 as shown in Figures 10(b) and 12(c), the frame body 33 is pulled straight up and removed, whereby the second filler 31 is positioned on top of the annular plate 33 and the first filler 31, protruding along the longitudinal direction, approximately in the center of the short side of the annular plate 33, over almost the entire length of the longitudinal direction, as shown in Figures 11 and 12(d).

[0066] The approximately rectangular second filler 31 piled on top of the annular plate 33 and the first filler 31 is crushed from above by the lower surface 32a of the linear rolling bearing 32 before solidifying, and spreads in the short direction of the annular plate 33 while blending with the first filler 31.As shown in Figure 12 (e), the filler 31 spreads almost without any gaps over the entire area between the lower surface 32a of the linear rolling bearing 32 and the upper surface 3a of the foundation concrete 3 inside the two openings 33b and the upper surface 33d of the annular plate 33, and is densely filled.

[0067] In the above embodiment, a wooden frame has been described as the frame 5, but the frame is not limited to being made of wood.

[0068] The above-mentioned embodiment is intended to facilitate understanding of the present invention, and is not intended to limit the present invention. The present invention can be modified or improved without departing from the spirit of the present invention, and it goes without saying that the present invention includes equivalents thereof. [Explanation of symbols]

[0069] 1. Building 3. Foundation concrete 3a Top surface of foundation concrete 4. Steel Bars 5 Frame (surrounding frame) 5a long frame 5b short frame 5c Frame body 5d Inner edge of frame body 5e Top surface of frame body 10 Laminated rubber (earthquake-proof device, object) 10a Main unit 10b Upper flange plate 10c Lower flange plate 10d bolt hole 10e Outer edge of lower flange plate 10f Underside of lower flange plate 12 Mounting bolts 21 Annular plate 21a opening 21b Upper surface of annular plate 21c Bolt hole 21d Inner edge of annular plate 21e Part that sandwiches the opening of the annular plate 21f Outer edge of annular plate 22 Level adjustment bolt 23 Long nut 24 Anchor bolt 25 Lead-in pin 31 Filler (first filler, second filler) 31a Upper surface of the first filling material 31b Upper surface of second filling material 32 Linear motion rolling bearing (seismic isolation device, object) 32a Lower surface of linear motion rolling bearing 33 Annular Plate 33a Center plate part 33b opening 33c Outer rim 33d top surface 34 Frame 34a Inner edge of frame G ground H1 Height between the annular plate and the lower flange plate H2 Height of frame body

Claims

1. A method for installing an object on a concrete body, comprising the steps of: a first step of installing an annular plate having a predetermined thickness such that an upper surface of the annular plate is located at a predetermined height; A second step of forming the concrete body by pouring concrete so that the upper surface of the concrete body is located at a position lower than the height of the upper surface of the annular plate by a predetermined dimension that is smaller than the predetermined thickness; a third step of installing the surrounding frame body after the concrete body has solidified so that the inside of the surrounding frame body does not protrude beyond the outer periphery of the annular plate; A fourth step of filling a filler into a position inside an inner peripheral edge of the surrounding frame body; a fifth step of removing the surrounding frame body in a vertically upward direction; a sixth step of placing a lower plate member constituting a lower portion of the object on the annular plate while crushing the filler from above with a lower surface of the lower plate member before the filler solidifies; and a seventh step of determining whether the crushed filler protrudes outward from the outer circumferential edge of the annular plate or the outer circumferential edge of the lower plate member.

2. 2. The method of claim 1 , further comprising the steps of: A method for installing an object, comprising: a first filler poured onto the upper surface of the concrete body, the upper surface of the first filler coinciding with the upper surface of the annular plate; and a second filler poured onto the first filler at a position inward from the inner peripheral edge of the enclosing frame body.

3. The method for placing an object according to claim 1 or 2, comprising the steps of: A method for installing an object, characterized in that the surrounding frame is suspended across the upper surface of the annular plate.

4. The method for placing an object according to claim 1 or 2, comprising the steps of: A method for installing an object, wherein the area enclosed by the surrounding frame is large enough that a single worker can level the surface.

5. The method for placing an object according to claim 1 or 2, comprising the steps of: A method for installing an object, characterized in that the height of the filler contained inside the inner peripheral edge of the enclosing frame is greater than the height obtained by dividing the volume obtained by multiplying the area of ​​the underside of the lower plate member by the height capable of absorbing unevenness in the underside of the lower plate member and the upper surface of the annular plate, by the area inside the inner peripheral edge of the enclosing frame.

6. The method for placing an object according to claim 1 or 2, comprising the steps of: A method for placing an object, wherein the outer peripheral edge is not a perfect circle.

7. The method for placing an object according to claim 1 or 2, comprising the steps of: A method for placing an object, wherein the outer peripheral edge is a polygon.

8. The method for placing an object according to claim 1 or 2, comprising the steps of: A method for installing an object, characterized in that the shape of the lower surface of the lower plate member and the shape of the inner peripheral edge of the surrounding frame are approximately similar to each other.

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