JPH10115501A - Measuring instrument for horizontal displacement of laminated rubber support - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a correct measurement result in a simple manipulation, by setting a movable vertical plate at a height of a laminated rubber support, pressing a horizontal displacement-measuring instrument until a vertical reference face butts against a rubber face of the laminated rubber support and pressing a lower or an upper scale with a gap to butt against the rubber face. SOLUTION: An upper steel plate 112 and a lower steel plate 114 are arranged to project from an upper and a lower ends of a cylindrical laminated rubber body 110. A lower and an upper scales 4, 5 of a horizontal displacement- measuring instrument S are set first at a zero position to agree with vertical reference faces A, B. A clamping jig 27 of a height-adjusting mechanism is loosened to extend a movable vertical plate 3 to fit heights of the upper and lower steel plates 112, 114 of a laminated rubber support Q. Thereafter, the measuring instrument S is pressed to butt against the laminated rubber body 110. The lower scale 4 is pressed then to butt against the laminated rubber body 110, and a scale of the lower scale is read. If it is difficult to read the lower scale, a pressing bolt 15 is clamped to take out the whole instrument S to read the scale.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horizontal displacement measuring tool for a laminated rubber bearing for seismic isolation installed in a seismic isolation building.

[0002]

[Prior art]

(Background of the Invention) As shown in FIG. 8, a base-isolated building using a base-isolated rubber bearing has a lower plate 100 mounted on a foundation B.
A seismic isolation rubber bearing Q is mounted and fixed thereon, and columns 102 and beams 104 serving as an upper frame G of the building are constructed on the seismic isolation rubber bearing Q to support the entire building. The seismic isolation rubber bearing Q
Generally adopts a structure in which a laminated rubber body 110 in which rubber layers and thin steel plates are alternately laminated is sandwiched between upper and lower mounting steel plates 112 and 114, but a so-called lead-enclosed laminated structure in which a lead core is embedded in the laminated rubber body 110. A rubber body structure is also employed. Thus, when a seismic motion occurs, the elastic deformation of the laminated rubber body 100 of the seismic isolation rubber bearing Q further adds to the plastic deformation of the lead core, thereby absorbing the energy of the seismic motion and reducing the shaking of the building. Therefore, due to the elastic deformation characteristics of the seismic isolation rubber bearing Q, a residual deformation after the seismic behavior or a deformation action at the time of building is inevitably generated. In addition, the deformation | transformation effect | action at the time of construction of a building causes eccentricity of concrete casting at the time of construction of an upper skeleton, and drying shrinkage of cast concrete, and a minute displacement ((delta)) arises. Therefore, the measurement of the horizontal displacement, especially the deformation of the seismic isolation rubber, must be performed continuously, not only during the construction of the building, and also during the earthquake, and is important for the maintenance and management of the seismic isolation building.

(Prior art) FIG. 9 shows a conventional method for measuring the horizontal displacement of a seismic isolation rubber bearing. In this method, an upper L-shaped ruler 120 is attached to the upper steel plate 112 of the seismic isolation rubber bearing Q, and a lower L-shaped ruler 122 is attached to the lower steel plate 114 by using a measuring tool R at a measuring point. It is read on a scale 124. However, according to this method, the fixing of the L-shaped ruler 120 installed on the upper steel plate 112 and the vertical and vertical alignment are complicated, and at the same time, the reading of the scale 124 is performed in a narrow space. There are various problems that misreading is likely to occur.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has been made in view of the fact that the measurement of the horizontal displacement of this type of seismic isolation rubber bearing has to be performed in a narrow place. It is an object of the present invention to provide a laminated rubber bearing horizontal displacement measuring tool capable of obtaining accurate measurement results with a simple operation. It is another object of the present invention to provide a horizontal displacement measuring instrument which is convenient for storage.

[0005]

Means for Solving the Problems A horizontal displacement measuring tool for a laminated rubber bearing according to the present invention has the following configuration to achieve the above object. That is, a base portion 1 having a horizontal bottom surface, a fixed vertical plate 2 fixed to the base portion 1 and having a first vertical reference surface A on the front surface and rising vertically, and vertically moving along the fixed vertical plate 2 The movable vertical plate 3 having a second vertical reference surface B that is fixed at an arbitrary position and is flush with the first vertical reference surface A, is mounted on the base 1, It is characterized by comprising a lower scale 4 protruding forward from the vertical reference plane, and an upper scale 5 mounted on the upper end of the movable vertical plate 3 and protruding forward from the second vertical reference plane.

(Operation) In use, the movable vertical plate 3 is adjusted to the height of the laminated rubber bearing, and the horizontal displacement measuring tool is pushed until the vertical reference planes A and B contact the rubber surface of the laminated rubber bearing. Further, one of the lower scale 4 and the upper scale 5 having an empty gap is pushed until it comes into contact with the rubber surface, and the pushing length is measured.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a horizontal displacement measuring tool for a laminated rubber bearing according to the present invention will be described with reference to the drawings. Figure 1
FIG. 6 shows a horizontal displacement measuring tool S of the embodiment. That is, FIGS. 1 to 3 show the entire configuration, and FIGS. 4 to 6 show the partial configuration.

The horizontal displacement measuring tool S includes a base 1 having a rectangular parallelepiped shape, a fixed vertical plate 2 having a first reference plane A at the front of the base 1 and rising vertically, and a fixed vertical plate 2. A movable vertical plate 3 having a second reference surface B which is moved up and down by two guide recesses; a lower scale 4 mounted on the base 1; and an upper scale 5 mounted on the movable vertical plate 3.

The detailed structure of each part will be described below. Base part 1 (see FIGS. 1 to 5) The base part 1 is made of a wide weight body, and is arranged side by side in the width direction.
The base pieces 1A, 1B.
B has a function of tightly attaching the fixed vertical plate 2 and holding the lower scale 4. Further, the bottom surface 1a of the base 1 is flat, and a stable installation state is obtained. More specifically, the base piece portions 1A and 1B and the fixed vertical plate 2 are provided with bolt insertion holes 10 and screw holes 10a at two locations.
Is mounted, and the screw portion 11a is screwed into the screw hole 10a to be integrated. In the present embodiment, when viewed from the front, the right base piece 1A is small and the left base piece 1B is large, but this aspect can be changed as appropriate. Inside the base piece 1A, a guide groove 13 for slidingly guiding the lower scale 4 is formed in a lower portion in a horizontal direction on the inner side. A screw hole 14 communicating with the guide groove 13 is formed so as to penetrate from the outer surface, and a holding bolt 15 is screwed into the screw hole 14.

Fixed vertical plate 2 The fixed vertical plate 2 is made of a flat plate having a certain thickness and a high height, and is narrowly attached to the base pieces 1A and 1B and is vertically set up. The front end face 2a forms a vertical reference plane A. The fixed vertical plate 2 has a guide recess 17 which is cut in a rectangular shape on the side surface from the front end surface and the upper end surface, and
A long hole 18 is formed in the center of the guide concave portion 17 in a longitudinal direction so as to penetrate.

Movable vertical plate 3 The movable vertical plate 3 is formed of a vertically long flat plate fitted into the guide recess 17 of the fixed vertical plate 2, and its front end surface 3a forms a vertical reference plane B. Slot 2 corresponding to slot 18 on the side
0 is opened in a penetrating manner in the vertical direction. A scale holder 22 is attached to the upper side surface with a set screw. The scale holding body 22 has a guide groove 23 for slidingly guiding the upper scale 5 formed on the inner side surface so as to be recessed in the horizontal direction. The screw hole 2 communicating with the guide groove 23
4 is formed so as to penetrate from the outer surface, and a holding bolt 25 is screwed into the screw hole 24. (Height Adjusting Mechanism) The movable vertical plate 3 can be moved up and down along the fixed vertical plate 2 and is fixed at an arbitrary position by the height adjusting mechanism. As shown in FIG. 6, the height adjusting mechanism of the present embodiment includes long holes 18 and 20 and two fasteners 27 slidably mounted along the long holes 18 and 20. The tightening tool 27 includes a bolt rod 28 and a nut 29 that is screwed to a screw portion 28a of the bolt rod 28. A contact part 28b is formed in a flange shape at the other end of the bolt rod 28,
The movable vertical plate 3 is fixedly held by tightening the nut 29.

Lower and upper scales 4, 5 The lower and upper scales 4, 5 are thin, long and narrow, and have a zero sign at the front end. Therefore, the protruding length from the vertical reference planes A and B immediately indicates the measured value. The lower scale 4 is fitted into the guide groove 13 of the base 1, and
5 is fixed and released. The upper scale 5 is inserted into the guide groove 23 of the scale holder 22 of the movable vertical plate 3,
It is fixed and released with the holding bolt 25.

(Mode of Use) The horizontal displacement measuring tool S is used as follows. FIG. 7 shows a measurement state of the seismic isolation laminated rubber bearing Q. In the figure, reference numeral 110 denotes a laminated rubber body that retains a cylindrical shape, and upper and lower steel plates 112 and 114 are disposed at upper and lower ends of the laminated rubber body 110 so as to protrude from the laminated rubber body 110. First, the lower and upper scales 4 and 5 of the horizontal displacement measuring tool S are set at the zero position, that is, the lower and upper scales 4 and 5 are matched with the vertical reference planes A and B. At this time, the holding bolts 15 and 25 are loosened. In addition, the fastening member 27 of the height adjusting mechanism is loosened, the movable vertical plate 3 is extended to match the height of the upper and lower steel plates 112 and 114 of the laminated rubber bearing Q, and then the fastening member 27 is tightened to move the movable vertical plate 3. Fix it. Next, the horizontal displacement measuring tool S is placed on the lower steel plate 114 at the measurement position, and is advanced toward the rubber body 110, and one of the upper and lower ends, in this case, the upper end contacts the rubber body 110. Stop pushing with the button pressed. In this state, one of the upper and lower scales 4 and 5, in this case, the lower scale 4 is inserted further to the back, and the lower scale 4 is
Stop at the position where it abuts. In this state, the scale of the lower scale 4 is read. If reading of the lower scale 4 is difficult, the holding bolt 15 of the lower scale 4 is tightened, the entire horizontal displacement measuring tool S is pulled out, and the scale of the lower scale 4 is read. After use, the movable vertical plate 3 is contracted, and the scales 4 and 5 return to their original positions. Further, individual members, namely, base pieces 1A and 1B, fixed vertical plate 2, movable vertical plate 3, and lower / upper scale 4,
5 is dismantled and stored.

As described above, according to the horizontal displacement measuring tool S of the present embodiment, the bottom 1a of the base 1 and the fixed vertical plate 2
In addition, accurate perpendicularity can be obtained by the reference planes A and B of the movable vertical plate 3, and accurate measurement accuracy by the scales 4 and 5 can be obtained. Further, since the movable vertical plate 3 moves up and down along the guide concave portion 17 of the fixed vertical plate 2, a precise vertical movement operation is performed. Further, the horizontal deformation of the laminated rubber body can be measured by a simple operation. Furthermore, after use, the individual members can be disassembled and conveniently stored in a small storage space.

The present invention is not limited to the above embodiment, and various design changes can be made within the scope of the basic technical concept of the present invention. That is, the following embodiments are included in the technical scope of the present invention. In the base 1, the base pieces 1A and 1B may simply hold and fix the fixed vertical plate 2.

[0016]

According to the horizontal displacement measuring device of the laminated rubber bearing of the present invention, in the measurement of the horizontal displacement of the laminated rubber bearing, an accurate operation result can be obtained with a simple operation even in a work in a narrow place. Can be. In addition, disassembly of each member facilitates storage.

[Brief description of the drawings]

FIG. 1 is an elevational view showing an entire horizontal displacement measuring tool of a laminated rubber bearing according to an embodiment of the present invention.

FIG. 2 is a side view thereof (a view taken in the direction of arrow II in FIG. 3).

FIG. 3 is a front view of the same (a view taken along line III in FIG. 2).

FIG. 4 is a sectional view taken along line IV-IV of FIG. 2;

FIG. 5 is a sectional view taken along line VV of FIG. 2;

FIG. 6 is a sectional view of a main part of a height adjusting mechanism.

FIG. 7 is a diagram showing a measuring procedure performed by using the present measuring tool.

FIG. 8 is a layout / structure diagram of seismic isolation rubber bearings.

FIG. 9 is a diagram showing a measurement procedure of a conventional seismic isolation rubber bearing.

[Explanation of symbols]

S: horizontal displacement measuring tool for laminated rubber bearing, 1 ... base, 1
A, 1B: base piece, 2: fixed vertical plate (vertical reference plane A), 3: movable vertical plate (vertical reference plane B), 4: lower scale, 5: upper scale

Claims (1)

[Claims] 1. A base portion 1 having a horizontal bottom surface, a fixed vertical plate 2 fixed to the base portion 1 and having a first vertical reference plane A on the front surface and rising vertically, along the fixed vertical plate 2. A movable vertical plate 3 having a second vertical reference plane B which is fixed at an arbitrary position and is flush with the first vertical reference plane A; A lower scale 4 protruding forward from the first vertical reference plane, and an upper scale 5 mounted on the upper end of the movable vertical plate 3 and protruding forward from the second vertical reference plane. Horizontal displacement measurement tool for laminated rubber bearings.