JP2015068751A - Scribing board for recording device of displacement trajectory of construct and recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a scribing board in a recording device of a displacement trajectory of a construct for recording a trajectory of relative displacement when a construct causes vibration in an earthquake or the like, and an upper structure is relatively displaced to a lower structure, in which the movement of a scribing needle moving along a scribing board can be visually confirmed from the vertical line passing the center of the scribing board, and can be tracked by the camera, etc.SOLUTION: A scribing tool 4 is directly or indirectly fixed in any one of an upper structure 7 and a lower structure 8, and directly or indirectly fixed in any other of the upper structure 7 and the lower structure 8. A scribing needle 5 of the tip of the scoring tool records a trajectory of the relative displacement as a scribing line 22 in the relative displacement of the upper structure 7 and the lower structure 8 on the scribing board 2. A body 20 of the scribing board is formed of materials having transparency or translucency. When the scribing needle 5 moves while coming into contact with one surface in the thickness direction of the body 20, a peelable coating material 21 is applied. When the scribing needle 5 moves, the coating material 21 is peeled off along the moving line.

Description

  The present invention relates to a recording device rule for a displacement trajectory of a structure used in a recording device that records a relative displacement trajectory when the structure vibrates and the upper structure is displaced relative to the lower structure, such as during an earthquake. The present invention relates to a recording apparatus including a writing board and a ruled board.

  The recording device that records the relative displacement trajectory (orbit) when the upper structure is displaced relative to the lower structure in the event of an earthquake, etc., and a ruler that is fixed to either the upper structure or the lower structure, Consists of a combination of fixed scoring plates, and the scoring needle connected to the tip of the scribing tool draws a continuous line on the surface of the scoring needle, such as the top surface of the scoring plate. A line is recorded on a ruled board (refer patent documents 1-3).

  When the ruler is fixed to the superstructure, the trace drawn by the ruler needle is engraved on the surface (upper surface) of the ruler plate as a ruled line, but from the surface side of the ruler plate, the tip of the ruler needle is It is difficult to see the situation where the crease needle is moving with respect to the crease board directly because it is hidden in the crease needle body and directly into the field of view. It is not easy to shoot as a movie. Under such circumstances, the recording of the trace of the scriber needle is only confirmed visually by removing the scriber board from the lower structure or the gantry after the vibration of the structure is finished.

  Even if it is possible to shoot the movement of the tip of the ruler needle as a movie, it is impossible to install a camera right above the axis of the ruler needle through the center of the ruler plate. It is impossible to take an image from a direction perpendicular to the surface of the plate. Therefore, if the camera is to be installed on the front side of the ruled board, it must be installed outside the range of movement of the ruler relative to the ruled board. Since the image is limited to the image that can be seen from the viewpoint close to the top surface of the ruled board, even if the image can be taken, the ruled line and the reference line such as the coordinates previously written on the ruled board It is difficult to accurately grasp the positional relationship.

JP-A-11-142135 (Claim 1, paragraphs 0014 to 0021, FIGS. 1 to 3) JP 2001-13258 A (Claim 1, paragraphs 0008 to 0016, FIGS. 1 and 2) JP 2002-168962 A (Claim 1, paragraphs 0009 to 0023, FIG. 1)

  As described above, even if the camera can be installed on the upper side of the ruler plate, which is the side where the ruler is installed, the image from the vertical line passing through the center of the ruler plate cannot be captured. Therefore, in order to accurately grasp (analyze) the ruled line, the ruled plate must be removed from the frame. In the end, the study of the ground motion grasped from the ruled lines must be after the end of a series of ground motions including aftershocks.

  In addition, it is necessary to remove the scoring plate from the stand to confirm and analyze the scribing lines. For example, when multiple seismic motions occur one after another, the locus of relative displacement due to the seismic motions continues. Since it is drawn as a ruled line, it may be impossible to distinguish a plurality of ruled lines of earthquake motion when checking the ruled line after the end of the earthquake motion. In such a case, it is indispensable to collate the response acceleration data in two horizontal directions in order to distinguish the ruled lines drawn by a plurality of ground motions. Moreover, there is a possibility of lack of accuracy.

  From the above background, the present invention makes it possible to visually check the movement of the scriber needle moving along the upper surface of the scriber board from the vertical line passing through the center of the scriber board, and to track it with a camera or the like. The present invention proposes a scriber board and a recording device for a recording device of a displacement trajectory of a structure.

According to the first aspect of the present invention, there is provided a scoring board for a recording device of a displacement trajectory of a structure. The crease needle at the tip of the scriber fixed and fixed directly or indirectly to the other of the upper structure and the lower structure is relatively displaced when the relative displacement between the upper structure and the lower structure occurs. A scoring plate for a recording device that records a displacement locus as a scoring line,
A coating material that can be peeled off when the scribing needle moves while in contact with one surface in the thickness direction of the main body formed of a transparent or translucent material is applied to the vibration of the structure. Accordingly, when the scribing needle moves, the coating material peels along the movement line, and the trajectory of the coating material peeling is visible as a scribing line from the other surface side in the thickness direction. This is a component requirement.

  As long as the upper structure and the lower structure are in a relationship that causes a relative displacement in the horizontal direction when the structure vibrates, the position is not limited, and within the structure, as shown in FIG. If it is outside the structure, for example, as shown in FIG. 10, the upper structure such as the ground structure and the lower structure such as the foundation are separated from each other through the seismic isolation device. It is. Since the seismic isolation device may be installed on the ground floor, the side to which the lower part of the seismic isolation device is fixed becomes the lower structure, and the side to which the upper part is fixed becomes the upper structure.

  “A crease board that is directly or indirectly fixed to either the upper structure or the lower structure” means that the scriber is directly fixed to either the upper structure or the lower structure, In other words, it may be indirectly fixed to one of the upper structure and the lower structure through some support member (for example, the gantry according to claim 2) to be fixed. Similarly, the ruler that is directly or indirectly fixed to the other of the upper structure and the lower structure is similarly fixed to the other of the upper structure and the lower structure, It means that it may be indirectly fixed to either the upper structure or the lower structure via some support member (support member 6 in the embodiment) that is directly fixed. Basically, the ruler plate 2 is indirectly fixed to the lower structure 8 and the ruler 4 is indirectly fixed to the upper structure 7 as shown in FIG. May be indirectly fixed to the upper structure 7, and the ruler 4 may be indirectly fixed to the lower structure 8.

  The “main body” in claim 1 refers to the main body of the scribing board in a state where the coating material is not applied. The main body of the marking board is molded from a transparent (including translucent) or translucent (transparent) material such as acrylic resin, PET resin, styrene resin or other synthetic resin in addition to glass. As long as it is a plate and has transparency that allows the state of the other side to be visually recognized when viewed from one side in the thickness direction, it is not always necessary to have high transparency. The material of a board is not ask | required. The scribing plate is formed in a polygonal shape such as a square shape because it is mainly supported on a support member (stand), but it is not always necessary, and may be formed in a circular shape or other shapes. . The main body of the ruler plate is mainly formed in a flat plate shape, but this is not always necessary, and the ruler tool side may be formed in a convex or concave curved surface shape.

  One surface in the thickness direction, such as the upper surface (front surface) of the main body of the scribing board, is scraped off by moving (moving) the scoring needle, and one surface of the main body of the scribing board is exposed. A coating material (painting material) such as a paint having properties is applied. “Peelable” in claim 1 means that the coating material peels in principle, but also includes the situation where the coating material does not completely peel off along the line of movement of the scribing needle. Means.

  As a result of the scribing needle moving along the surface of the scoring plate on which the coating material is applied (hereinafter referred to as the coating material side surface) due to the vibration generated in the structure, the surface is traced. As shown in FIG. 3A, the movement of the ruler needle 5 is created as a ruled line 22 when the coating material 21 peels along the line of movement of the ruler needle 5. When the scriber needle 5 traces the surface of the scriber plate 2 on the side of the coating material 21, the scriber needle 5 may scratch the surface and scratch the main body 20 of the scriber plate 2. 5 may damage the surface of the scribing plate main body 20 on the side of the coating material 21. If the material of the coating material 21 maintains the state adhered to the surface on the coating material 21 side of the scoring plate 2 after drying and has the property of being scraped off by the tracing of the scoring needle 5, it does not matter at all. Other paints such as ink, ink and paint are also used.

  In a state where the coating material 21 is applied to the surface of the scribing plate body 20 on the side of the coating material 21, the surface opposite to the surface on which the coating material 21 is applied (hereinafter referred to as the bottom surface). The state (color) of the coating material 21 on the surface on the coating material 21 side can be seen through the ruled plate main body 20 from the surface on the opposite side. From this state, the scribing needle 5 traces (moves) the surface of the scribing plate 2 on the side of the coating material 21, and scrapes (peels) the coating material 21, whereby the scribing needle 5 in which the coating material 21 is absent. 3 is created on the surface of the ruler plate 2 on the side of the coating material 21 as a ruled line 22 as shown in FIG. As a result of the peeling of the coating material 21, the coating material 21 is absent from the surface of the marking line 22 on the side of the coating material 21, so that light passes through the marking line 22 and the marking line 22 is transparent. Appears on the opposite side of the body 20. As a result, as shown in FIG. 3C, the locus of the ruler needle 5 becomes visible as a ruled line 22 from the opposite surface side of the ruler plate 2. The light that passes through the ruled line 22 includes artificial lighting and natural light.

  Since the ruled lines 22 can be viewed from the opposite side of the ruled plate 2 by the movement of the ruler needle 5, the ruled lines as shown in FIGS. 8- (a), (b), and FIG. 22 or the scribing needle 5 can be visually confirmed directly from the opposite surface side of the scoring plate 2 or can be traced (photographed) with a camera or the like.

  When the structure vibrates and moves while being in contact with the surface of the scribing plate 2 on the side of the coating material 21, the tip of the scribing needle 5 or the scribing line 22 is on the side opposite to the scribing plate 2. Therefore, the ruled lines 22 can be recorded and collected as data simultaneously with the occurrence of vibration. Since the ruled lines 22 created by the ruled needle 5 are recorded at the same time as the creation, when the cause of vibration is an earthquake, the degree of shaking generated in the structure (superstructure 7) can be accurately grasped, and in advance It is also possible to predict. Depending on the structure, the cause of vibration may be wind.

  In particular, the ruled line 22 can be photographed from the opposite side of the ruled plate 2 without any obstacles, so that it passes through the center of the ruled plate 2 (center of the reference line) and is perpendicular to the surface of the ruled plate 2. Since the direction, that is, the state of the ruled board 2 from the extension line at the center of the ruled needle 5 can be captured as an image, the relationship between the ruled line 22 and the reference line can be accurately grasped. For example, the amount of relative displacement between the upper structure 7 and the lower structure 8 due to the vibration that is currently occurring, and the relative displacement displayed as a reference line such as a concentric circle preliminarily written on the surface on the coating material 21 side of the ruled board 2 It is possible to grasp the relationship with the allowable value.

  When a moving image of the ruled line 22 being created by the ruled needle 5 is taken, it is possible to independently acquire the trajectory of each earthquake motion when a plurality of earthquake motions occur. Conventionally, in order to check the crease lines created by the crease needle, it has been necessary to remove the crease board from the gantry, so when multiple seismic motions occur, successive crease lines are drawn, resulting in multiple seismic motions. It was difficult to distinguish the ruled lines. On the other hand, in the present invention, the ruled line 22 created by the ruled needle 5 can be recorded and stored as a moving image with the time at the same time, so that the ruled line 22 can be confirmed after the end of the earthquake motion. It is possible to distinguish and accurately analyze a plurality of ruled lines 22 of seismic motion, and at this time, it is not necessary to collate with response acceleration data, and complicated work is not required.

  The scoring plate 2 according to claim 1 is directly or indirectly fixed to either one of the upper structure 7 and the lower structure 8 and records the displacement locus of the structure together with the gantry 3 that supports the scoring plate 2. 1 is formed (claim 2). The gantry 3 has a holding member 33 for holding the scribing plate 2, but the holding member 33 has at least the scoring so as not to obstruct viewing from the surface opposite to the coating material 21 side, such as the lower surface of the scoring plate 2. It has the function of not closing the creation area of the writing line 22 from the surface opposite to the surface on the side of the coating material 21 (claim 2).

  The function that the holding member 33 does not block from the surface opposite to the surface on the side of the coating material 21 is that the region for creating the ruled line 22 is blocked from the surface of the marking plate 2 opposite to the surface on the side of the coating material 21. It is made of a transparent or translucent (transparent) material that does not block the view from the opposite surface side. “The shape in which the scoring plate 2 is not closed from the surface opposite to the surface on the side of the coating material 21” means that the holding member 33 surrounds the scoring plate 2 as shown in FIGS. It refers to the shape of a frame that is continuously held, or the shape of a clamp that holds (grips) a part of the periphery of the ruled board 2 as shown in FIG. In the latter case, the holding member 33 includes a plurality of holding portions 33A. The “material that does not block the field of view from the surface opposite to the surface on the side of the coating material 21” refers to a material made of synthetic resin such as glass or acrylic resin, like the main body 20 of the ruled board 2.

  The holding member 33 of the gantry 3 does not block the creation area of the scribe line 22 of the scribe plate 2 from the surface side opposite to the surface of the coating material 21 such as the lower surface side. While being fixed to the holding member 33, it is possible to observe the ruled line 22 created on the ruled plate 2 by the ruler needle 5 directly from below or above the holding member 33, and to shoot with the camera 11 or the like. Is secured. However, as shown in FIGS. 1, 2, etc., a viewpoint must be placed below the holding member 33 in order to confirm the lower surface of the scribing plate 2 directly from below the holding member 33 visually.

  Therefore, in order to make it possible to confirm the creation area of the ruled line 22 of the ruled board 2 from the periphery of the gantry 3, the surface of the ruled board 2 on the surface opposite to the surface on which the coating material 21 is applied. It is appropriate that a cradle 37 for installing or fixing the reflecting plate 9 or the camera 11 or the like is disposed at a position where the reflection plate 9 or the camera 11 is mounted.

  The cradle 37 is used to install or fix the reflecting plate 9 such as a mirror so that the state of the surface of the scribing plate 2 can be confirmed around the gantry. The reflecting plate 9 reflects the lower surface, which is the surface opposite to the surface on which the scoring line 22 of the scribing plate 2 is created, or the shape of the upper surface. Alternatively, it is possible to recognize the state of the ruled line 22 on the upper surface. In addition to a mirror, a synthetic resin plate such as glass or acrylic is used for the reflecting plate 2, but the material and shape are not limited as long as the lower surface or the upper surface of the ruled plate 2 can be reflected.

  The scoring board body is molded from a transparent or translucent material, and scraped off by tracing the scoring needle on one side of the scoring board body in the thickness direction, exposing the surface of the scoring board body. By applying the coating material (coating material) to be applied, the scraped line can be represented on the surface opposite to the coating material side of the scoring board body, so the scribing created by scraping the coating material The trajectory of the movement of the needle can be viewed from the surface side of the scoring plate opposite to the coating material side using the scoring line.

  As a result, the scribing line can be visually confirmed directly from the side opposite to the coating material side of the scribing board, especially from the vertical line passing through the center of the scribing board, and can be taken with a camera or the like. Simultaneously with the occurrence of vibration of the structure, the ruled lines can be recorded and collected as data while accurately grasping the relationship with the reference line.

It is an elevational view showing a configuration example of a recording apparatus using a scribing plate when the scoring plate is indirectly fixed to the lower structure. It is a longitudinal cross-sectional view of the mount part of FIG. (A) is the top view which showed the surface (upper surface) by which the coating material was apply | coated of the ruled board, (b) is the elevation view of (a), (c) is the bottom view of (a). is there. (A) is a sectional view taken along the line aa in FIG. 1 showing the ruled board and the holding member for holding it, and (b) is a sectional view taken along the line bb in FIG. 1 showing the column and the sleeve fixed thereto. (C) is the cc sectional view taken on the line of FIG. 1 which showed the base, (d) is the dd sectional view taken on the line of FIG. 1 which showed the base. FIG. 2 is an elevational view showing a fixed portion of the ruler plate to the gantry in FIG. 1. It is the elevation which showed the connection part to the support member of the ruler in FIG. It is the perspective view which showed the example at the time of comprising the holding member of the mount frame shown in FIG. 1 from several holding | maintenance part. (A) is an elevation view showing the state of the bottom surface of the scoring plate, which is the surface opposite to the coating material side, viewed through a reflector installed on the stand, and (b) is a ruled plate. It is the elevation which showed a mode that the lower surface of a drawing board is visually observed through a magnifier and a reflecting plate. FIG. 5 is an elevational view showing a state in which a camera is installed on a cradle below a scoring plate and a scoring needle is creating a scribing line and the camera is used to photograph the scoring line. It is the elevation which showed a mode that the recording apparatus was installed between the upper structure supported by the lower structure of foundations etc. with the seismic isolation apparatus, and the lower structure. It is the elevation which showed a mode that the recording device was installed between the housing of the upper floor in the structure, and the housing of the lower floor.

  As shown in FIGS. 10 and 11, FIG. 1 is directly or indirectly fixed to one of the upper structure 7 and the lower structure 8 that cause relative displacement in the horizontal direction when the structure vibrates. When the scriber needle 5 at the tip of the scriber 4 fixed directly or indirectly to the other of the structures 8 makes a relative displacement between the upper structure 7 and the lower structure 8, the locus of the relative displacement is marked. A configuration example of a recording apparatus 1 including a scoring plate 2 that records as lines 22 and a gantry 3 that supports the scoring plate 2 is shown. FIG. 1 shows an example in which the lower structure 8 is a slab that is a lower-level frame in the structure, and the upper structure 7 is a slab or beam that is an upper-level frame.

  FIG. 10 shows an example in which the recording device 1 including the scoring plate 2 of the present invention and the scribing tool 4 are installed between the upper structure 7 and the lower structure 8 separated by the seismic isolation device 12, FIG. An example in which the recording device 1 and the ruler 4 are installed between the upper-floor housing as the upper structure 7 in the structure and the lower-floor housing as the lower structure 8 is shown. The upper structure 7 and the lower structure 8 are mainly slabs and beams as shown in FIGS. 1 and 11, but are not necessarily limited to these, and may be walls, columns, piles, or the like.

  In FIG. 1 and subsequent figures, the scoring plate 2 is supported by a base 3 fixed directly or indirectly to the lower structure 8 and the scoring tool 4 is indirectly fixed to the upper structure 7. The ruler 4 may be directly or indirectly fixed to the structure 7 directly or indirectly. Hereinafter, description will be made according to an example in which the ruler plate 2 is fixed to the lower structure 8 and the ruler 4 is fixed to the upper structure 7.

  As shown in FIGS. 1 and 2, the gantry 3 is a base 31 fixed directly or indirectly to the lower structure 8, a plurality of columns 32 that are erected on the base 31 and joined to the base 31, A holding member 33 that is supported on the upper portion of the support column 32 and holds the ruled board 2 is provided as a basic component. For example, as shown in FIG. 4D, which is a cross-sectional view taken along the line dd in FIG. 1, the pedestal 31 is screwed into the lower structure 8 with anchor bolts 31a and the like arranged around the four corners of the pedestal 31. It is fixed detachably to the lower structure 8 by being fixed by being embedded or the like. The gantry 3 is fixed to the upper structure 7 by turning upside down and directing the pedestal 31 toward the upper structure 7. In that case, the lower surface of the ruled board 2 is the application surface of the coating material 21 to be described later, and becomes the creation surface of the ruled line 22.

  When the holding member 33 holds the ruled plate 2, at least the area for creating the ruled lines 22 is a frame shape that does not block from the lower surface side, that is, the surface opposite to the surface coated with the coating material 21, which will be described later. It is formed in a shape that holds a part of the periphery of the plate 2. Alternatively, it is made of a transparent or translucent plate such as glass or synthetic resin that does not block the creation area of the ruled line 22 from the lower surface side.

  FIG. 1 is a cross-sectional view taken along the line aa in FIG. 1 and is held in a frame shape that holds the periphery of a ruled plate 2 formed in a square plate shape as shown in FIG. The example at the time of forming the member 33 is shown. FIG. 7 shows an example in which the holding member 33 is composed of a plurality of holding portions 33A that sandwich the four corners of the ruled board 2 from above and below. FIG. 5 is an enlarged view of a broken-line circle portion in FIG.

  When the holding member 33 has a frame shape as shown in FIG. 4- (a), the holding member 33 straddles all the struts 32 to constrain all the struts 32 and hold the scribing board 2. However, it works to ensure the stability of the column 32. As shown in FIG. 7, the holding member 33 is composed of a plurality of holding portions 33 </ b> A separated from each other, and the holding member 33 cannot restrain all the columns 32, for example, when the holding member 33 does not extend over all the columns 32. In this case, in addition to the holding member 33, a frame member 34 that straddles all the struts 32 and restrains all the struts 32 is disposed at any level in the axial direction of the struts 32 and connected to all the struts 32.

  As shown in FIG. 4A, when the holding member 33 is formed in a frame shape and has a portion that overlaps the corner portion of the ruler plate 2 at a position corresponding to the corner portion of the ruler plate 2, The plate 2 is supported at least at the corners of the holding member 33. In this case, an insertion hole 2a through which a shaft portion of a bolt 35, which will be described later, is inserted is formed at a corner portion of the scribing plate 2, but the bolt 35 is also provided at a corner portion of the holding member 33 as shown in FIG. An insertion hole 33a through which the shaft portion is inserted is formed. FIG. 4- (a) shows a state where the holding member 33 has such a thickness that the outer peripheral portion of the scribing plate 2 overlaps the inner peripheral portion of the holding member 33 over the entire circumference. In this case, the scribing plate 2 is supported by the holding member 33 not only at the corners but also at the entire periphery near the outer periphery. The holding member 33 shown in FIG. 4A and FIG. 5 overlaps the corner and the outer peripheral portion of the ruler plate 2 so that the ruled line 22 on the ruler plate 2 is not blocked and the ruled line 22 is not blocked. The writing board 2 is held.

  In this case, as shown in FIG. 5, the ruler plate 2 overlaps the holding member 33, and for example, the head of the bolt 35 connected to the upper end of the support column 32 comes into contact with the upper surface of the ruler plate 2. By being pressed against the head toward the holding member 33, the head is held while being supported by the holding member 33. The shaft portion of the bolt 35 passes through the insertion hole 2a of the scribing plate 2 and the insertion hole 33a of the holding member 33 from above, and is fixed to the upper end portion of the support column 32. The sleeve 36 shown in FIG. The ruled board 2 and the holding member 33 are supported on the support column 32 by being inserted or screwed. At this time, the holding member 33 is locked downward by the nut 35b screwed to the shaft portion of the bolt 35, whereby the ruler plate 2 and the holding member 33 are sandwiched between the head of the bolt 35 and the nut 35b in the thickness direction. , Retained.

  The shaft portion of the bolt 35 protruding from the lower surface of the holding member 33 is inserted through the sleeve 36 fixed to the inner peripheral side of the support 32 by welding or the like, and the nuts 35a and 35a are screwed to both sides of the sleeve 36 in the axial direction. Or the screw 36 is fixed to the sleeve 36 by being screwed to the sleeve 36 which is internally threaded, and at the same time, the holding member 33 is fixed to the column 32. The level of the ruled board 2 and the holding member 33 and the inclined state (whether they are horizontal) are adjusted by adjusting the screwing position of the nut 35b screwed to the lower surface side of the holding member 33 of the shaft portion of the bolt 35. Adjusted. In the drawing, the holding member 33 is fixed to the support column 32 using a bolt 35 connected to the upper end of the support column 32 in the axial direction of the support column 32. However, the method of fixing the holding member 33 to the support column 32 is arbitrary. is there.

  As shown in FIG. 2, the reflection plate 9 that reflects the state of the lower surface of the ruled plate 2 at the position facing the lower surface of the ruled plate 2 below the holding member 33, or the state of the lower surface of the ruled plate 2. A cradle 37 for installing or fixing the camera 11 to be photographed is disposed and connected to the support column 32. In the drawing, as shown in FIG. 4- (c), the shaft portion of the bolt 38 is formed by penetrating the support column 32 in the horizontal direction at the arrangement level of the cradle 37 or by arranging a bolt 38 screwed into the support column 32 in the horizontal direction. The cradle 37 is supported by the support columns 32 at the four corners, but the support method of the cradle 37 to the support column 32 is arbitrary.

  In the case shown in the figure, the shaft portion of the bolt 38 passes through the support column 32 and is screwed horizontally into the support plate 37 from the outer peripheral side surface of the support table 37, or is screwed into the support column 32 and screwed into the support table 37. It protrudes to the inner peripheral side (the cradle 37 side) of the support column 32 without doing. When the shaft portion of the bolt 38 is screwed into the cradle 37, the cradle 37 is supported by the shaft portion of the bolt 38 and is also restrained against movement in the in-plane direction (horizontal two directions). When the shaft portion of the bolt 38 is not screwed into the cradle 37, the cradle 37 is supported by the support column 32 by simply being placed on the shaft portion of the bolt 38 protruding to the inner peripheral side of the support column 32. In this case, if the outer peripheral surface of the cradle 37 is in a state where it is inscribed in the pillars 32 at the four corners, the cradle 37 is also constrained in the in-plane direction when supported by the shaft portion of the bolt 38.

  The scribing plate 2 is a glass plate, an acrylic plate, etc., such as the upper surface of the main body 20 formed of a transparent or translucent material, etc. on one surface in the thickness direction (the surface on which the coating material 21 is applied) An application material 21 such as acrylic paint (acrylic paint) and other ink that can be peeled off when moved with respect to the ruler 2 while the ruler needle 5 connected to the tip of the ruler 4 is in contact is applied. Is formed. The main body 20 of the scribing plate 2 is not necessarily a flat plate, and may be a curved plate.

  The coating material 21 peels along the line of movement when the scribing needle 5 moves with respect to the scoring plate 2 with the vibration of the structure. The trajectory of peeling of the coating material 21 at this time is that the main body 20 of the scribing plate 2 is transparent or the like, and the other surface in the thickness direction of the scoring plate main body 20 (the coating material 21 is applied), such as the lower surface side. It is visible from the side opposite the surface. The main body 20 of the scribing plate 2 is formed in an arbitrary planar shape, but a rectangular shape is appropriate in terms of ease of holding the gantry 3 on the holding member 33. In the following, according to the example of FIGS. 1 and 2, the surface of the scoring plate body 20 on the application side of the coating material 21 is referred to as the upper surface, and the surface opposite to the surface on which the coating material 21 is applied is referred to as the lower surface.

  In a state where the coating material 21 is applied to the upper surface of the main body 20 of the scribing plate 2, the scribing of the coating material 21 using a needle or the like as shown in FIG. The center line (coordinate axis) of the direction and a concentric reference line are entered. This reference line is in a state where it can be seen from the lower surface (back surface) side of the ruled board 2 as shown in FIG. In this state, the scribing needle 5 moves with respect to the scoring plate 2 to trace the coating material 21, and by creating a scribing line 22, light passes through only the reference line and the scoring line 22 from above or from below. The reference line and the ruled line 22 can be seen on the lower surface side or the upper surface side of the ruled plate 2.

  As described above, the ruler plate 2 is placed on the holding member 33 of the gantry 3 as shown in FIG. 5. For example, the bolt 35 passing through the insertion hole 2 a of the ruler plate 2 and the insertion hole 33 a of the holding member 33 is provided. While the bolt 35 passes through the sleeve 36 while being sandwiched between the head and the holding member 33, nuts 35 a and 35 a are fastened to the shaft portion of the bolt 35 to be fixed to the holding member 33. The fixing method of 2 to the holding member 33 is arbitrary, and is not limited to the illustrated example.

  FIG. 7 shows an example in which the holding member 33 is composed of a plurality of holding portions 33A that hold the corners of the square-shaped ruled board 2. In this case, the holding portion 33A is sandwiched between the nut 35b shown in FIG. 5 and the head of the bolt 35, which are screwed into the shaft portion of the bolt 35 connected to the upper end of each column 32, and is supported on the nut 35b. And a holding plate 33c sandwiched between the support plate 33b and the head of the bolt 35 and paired with the support plate 33b with the ruled plate 2 interposed therebetween. The shaft portion of the bolt 35 is inserted through the support plate 33 b, the holding plate 33 c, and the insertion hole 2 a of the ruled plate 2.

  The scribing plate 2 is placed on the support column 32 together with the bolt 35 while being sandwiched between the support plate 33b and the holding plate 33c. The shaft portion of the bolt 35 penetrates the sleeve 36, and nuts 35a and 35a are provided on the shaft portion. It is fixed to the column 32 by being fastened. The holding member 33 (holding portion 33A) shown in FIG. 7 holds the ruled plate 2 without clogging the creation area of the ruled line 22 of the ruled plate 2 by overlapping the corners of the ruled plate 2. To do.

  As shown in FIGS. 1 and 2, a support member 6 that supports the ruler 4 is suspended from a slab, a beam, or the like that is the upper structure 7, and the ruler 4 is connected to the lower end of the support member 6. A ruler needle 5 is connected to the tip of the ruler 4 by being connected (connected) or the like. The support member 6 and the ruler 4 are arranged with the axial direction oriented in the vertical direction in principle, but may be inclined with respect to the vertical direction. The upper end portion of the support member 6 is basically joined to the upper structure 7 in a fixed state.

  Although the method of connecting the ruler 4 to the support member 6 is not limited, in the drawing, as shown in FIG. 6, a plurality of holding parts into which the ruler 4 can be inserted in the axial direction at the lower end of the support member 6. 61 and 61 are integrated by welding, bolt joining or the like, and the ruler 4 is inserted into the holding portions 61 and 61, and the ruler 4 is connected in a state where the level of the ruler needle 5 is adjusted. FIG. 6 is an enlarged view of a dashed ellipse portion in FIG.

  The level of the scriber needle 5 is adjusted with the connecting position of the locking member 42 connected to the upper end of the shaft 41 of the ruler 4 to the shaft 41, and the locking member 42 is placed on the uppermost holding part 61. It is adjusted by locking it downward. The scribing needle 5 is supported by the support member 6 when the locking member 42 is locked to the uppermost holding portion 61, but when the scribing needle 5 comes into contact with the upper surface of the scribing plate 2. Since the weight of the scribing needle 5 is applied to the scribing board 2, the scoring needle 5 moves on the top surface of the scoring board 2, and the locking member 42 is the uppermost holding part while creating the scribing line 22. It may float from 61. The locking member 42 is disposed around the ruler 4, and is connected to the ruler 4 when a screw 42 a penetrating the locking member 42 in the radial direction hits the shaft 41 of the ruler 4.

  The ruler 4 passes through a plurality of holding portions 61, 61, and the locking member 42 is locked downward to the holder 61, whereby the weight of the ruler 4 is reduced from the ruler needle 5 to the ruler plate 2. It acts and is supported by the support member 6 in a state where it can freely move up and down in the axial direction with respect to the support member 6 according to the writing pressure of the ruler needle 5.

  In the drawing, a male screw is cut into the shaft portion 41 of the ruler 4 and a nut 43 is screwed into the male screw section, and a stopper 44 is inserted into the lower surface side of the uppermost holding portion 61 in a section other than the male screw section. And the coil spring 45 is interposed between the nut 43 and the stopper 44, and the restoring force of the coil spring 45 is adjusted by adjusting the screwing position of the nut 43 with respect to the shaft portion 41. The pen pressure is adjusted.

  When the coil spring 45 is a natural length (restoring force is 0), the writing pressure is the weight of the ruler 4, and when the coil spring 45 contracts and a restoring force is applied thereto, the restoring force is applied to the nut 43. Since the ruler 4 is pushed downward from the holding portion 61, the writing pressure rises from its own weight. Similarly to the locking member 42, the stopper 44 is disposed around the ruler 4, and a screw 44 a that penetrates the stopper 44 in the radial direction abuts against the shaft 41 of the ruler 4, thereby causing the ruler 4. Connected.

  In FIG. 8A, a reflecting plate 9 such as a mirror is installed on the pedestal 37 of the gantry 3, and a state in which the ruled line 22 is drawn through the reflecting plate 9 on the lower surface of the ruled plate 2 is visually observed. A state in which a ruled line 22 being created is recorded (recorded) on a camera 11 such as a camera is shown. The camera 11 is installed directly on the cradle 37 as shown in FIG. 9, and the state of the lower surface of the ruled board 2 may be directly photographed. When installing the camera 11 on the cradle 37, by setting the power button and the shutter button of the camera 11 to be turned on when an earthquake motion occurs, for example, the camera 11 starts shooting only when the earthquake occurs It is possible to make it. It is possible to turn on both buttons when an earthquake motion occurs by, for example, capturing a P-wave arrival signal or using an initial shock (acceleration) when an S-wave arrives.

  FIG. 8B shows a state in which the magnifying glass 10 is installed between the lower surface of the scoring plate 2 and the reflecting plate 9, and the lower surface of the scoring plate 2 is viewed through the magnifying glass 10 and the reflecting plate 9. . When the range of movement of the scriber needle 5 is narrow, it is not easy to recognize the scriber line 22 at its original size. Therefore, by reflecting the state of the lower surface of the scriber plate 2 through the magnifying glass 10, The line 22 can be easily recognized. Since the concentric reference line placed on the upper surface of the scoring plate 2 serves as an index of the allowable relative displacement amount of the upper structure 7 with respect to the lower structure 8, the scoring line 22 and the reference line are arranged by the intervention of the magnifying glass 10. By making it easy to recognize, the accuracy in judging whether or not the earthquake currently occurring is likely to remain within the allowable relative displacement between the upper structure 7 and the lower structure 8 at the time of the occurrence of the earthquake is improved. It becomes possible to increase.

  In addition to the mirror, a general plate having a mirror function is used as the reflecting plate 9. By using a magnifying reflecting mirror (concave mirror) as the reflecting plate 9, the reflecting plate 9 also functions as the magnifying mirror 10. Therefore, there is an advantage that the combined use of the magnifying glass 10 becomes unnecessary, and the facilities for enlarging and recognizing the ruled line 22 can be reduced.

1 ... Recording device,
2 ... scribe plate, 20 ... main body, 2a ... insertion hole, 21 ... coating material, 22 ... scribe line,
3 ... pedestal, 31 ... pedestal, 31a ... anchor bolt, 32 ... prop
33: Holding member, 33A: Holding portion, 33a: Insertion hole, 33b: Support plate, 33c: Holding plate,
34 …… Frame material,
35 ... Bolt, 35a ... Nut, 35b ... Nut, 36 ... Sleeve,
37 ... cradle, 38 ... bolt,
4... Ruler, 41... Shaft, 42... Locking material, 42 a... Screw, 43... Nut, 44 ....... Stopper, 44 a.
5 ...
6 ... support member, 61 ... holding part,
7 ... Superstructure, 8 ... Substructure,
9 ... reflector, 10 ... magnifier, 11 ... camera,
12 …… Seismic isolation device.

Claims (4)

Directly or indirectly fixed to either the upper structure or the lower structure that causes relative displacement in the horizontal direction when the structure vibrates, and directly or indirectly fixed to the other of the upper structure or the lower structure A scoring plate for a recording device that records a trajectory of the relative displacement as a scoring line when the scoring needle at the tip of the scoring tool is relative displacement between the upper structure and the lower structure;
A coating material that can be peeled off when the scribing needle moves while in contact with one surface in the thickness direction of the main body formed of a transparent or translucent material is applied to the vibration of the structure. Accordingly, when the scribing needle moves, the coating material peels along the movement line, and the trajectory of the coating material peeling is visible as a scribing line from the other surface side in the thickness direction. A scribing board for a recording device of a displacement trajectory of a structure.   The scriber board according to claim 1, and a pedestal that is fixed directly or indirectly to one of the upper structure and the lower structure and supports the scriber board. An apparatus for recording a displacement trajectory of a structure, comprising a holding member that holds a writing board and does not block at least the ruled line creation area from the surface opposite to the surface coated with the coating material.   3. The displacement trajectory recording apparatus for a structure according to claim 2, wherein a cradle is disposed at a position facing the surface of the ruled plate opposite to the surface coated with the coating material. . The recording apparatus according to claim 3, wherein a reflector is detachably fixed to the cradle.

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