JP2970449B2 - Rocking vibration test equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rocking vibration test apparatus capable of simulating the movement of the upper floor of a skyscraper swaying due to wind or the like with a small-scale and simple device. It is used for the purpose of simulating how a person feels shaking on the upper floor.

[0002]

2. Description of the Related Art At present, the maximum height of a tall building in Japan is about three.
Although it is 00m, research and development are being promoted at the public and private levels with the aim of realizing ultra-high-rise buildings of 600-1000m or more. One of the research subjects is to examine how people in the room feel the shaking when the building shakes due to an earthquake or typhoon. As shown in FIG. 1, when an ultra-high-rise building swings around its base, its upper floor becomes a tilting and swinging motion in which horizontal motion and vertical motion are regularly combined, and its cycle and amplitude become considerably large. For example, 10-20
It is assumed that an amplitude of 1 m or more frequently occurs with a cycle of about seconds. Investigating how a person feels such a shaking is one of the important points in designing a super-high-rise building.

Conventionally, various vibration test apparatuses have been developed to simulate the vibration of a building. For example, as disclosed in Japanese Patent Application Laid-Open No. 56-90232, horizontal vibration is applied to a test table by an appropriate actuator, and vertical vibration is suppressed by supporting a test body by a spring and a damper mounted on the test table. Allow.

[0004]

In the conventional vibration test apparatus, as described above, the vertical vibration is a random vibration generated as a result of the horizontal vibration, and the horizontal vibration and the vertical vibration are regularly combined. No tilting rocking movement could be generated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to simulate the movement of the upper floor of a skyscraper swaying due to wind or the like with a small and simple device. A rocking vibration test device is provided.

[0006]

According to the rocking vibration test apparatus of the present invention, there is provided a test stand having a plurality of wheels mounted on a lower surface thereof protruding from a lower surface of the test stand. And the top of the angled slope is straddled by the plurality of wheels so that the test table travels on the angled slope and rocks. Here, the mountain-shaped inclined surface may be configured by a rail that is linear in plan, and the test table may be configured to reciprocate along the rail. Also, the angled inclined surface is composed of four panels combined in a substantially pyramid shape, and the four spherical wheels of the test stand are respectively mounted on the respective panels, and the test stand is reciprocated, turned or circled. It can be configured to be. Further, the test table may be pulled upward by a suitable lifting means so as to reduce the weight applied to each wheel within a range where each wheel does not rise from the angled slope. Further, an angle adjusting mechanism for variably setting the angle of inclination can be attached to the angled inclined surface. In addition, a test room that simulates a room of a skyscraper can be mounted on the test table via an anti-vibration rubber.

[0007]

When the test table is run on the mountain-shaped slope while maintaining the arrangement relationship of straddling the top of the mountain-shaped slope with the plurality of wheels, when one wheel goes up the slope, another wheel is tilted. Down the plane, and the test stand tilts. Running in the opposite direction will tilt the test stand in the opposite direction. In this way, the horizontal movement and the tilting movement are regularly combined, such as the movement of the upper floor of a skyscraper that rocks and vibrates. A large tilting and swinging motion can be simulated.

[0008]

2 to 4 show the configuration of a rocking vibration test apparatus according to an embodiment of the present invention. The test table 1 of this embodiment has a rectangular planar shape, and wheels 2 are protruded near four corners on its lower surface. On the test stand 1 is mounted a box-shaped test chamber 4 having an interior simulated in a building room via an anti-vibration rubber 3.

In this embodiment, the above-mentioned angled slope is constituted by two sets of rails 5a and 5b which are linear in plan. In FIG. 2, one set of rails 5a (two parallel rails) arranged on the left side is installed to be inclined upward to the right, and another set of rails 5b (also shown) is arranged on the right side. (Parallel two rails) are installed at an angle to the left. That is, the rail 5a
Is lifted by a jack 6a, and the left end of the rail 5b is lifted by a jack 6b. The inclination angles of the rails 5a and 5b can be variably set by the jacks 6a and 6b.

In FIG. 2, the left wheel 2 of the test stand 1 is mounted on the left rail 5a, the right wheel 2 is mounted on the right rail 5b, and the top of the chevron slope formed by the rails 5a and 5b is positioned at the top. The arrangement is such that the left and right wheels 2 straddle greatly. In this state, the test table 1 can reciprocate along the rails 5a and 5b. As shown in FIG. 3, guide walls 7 are formed on the left and right sides of the traveling path of the test table 1 to prevent the test table 1 from rolling in the traveling direction. Wheels 8 projecting laterally are provided on both side surfaces, and the test table 1 reciprocates while the side wheels 8 abut on the guide walls 7.

As a drive mechanism for reciprocating the test table 1 along the rails 5a and 5b, a push-pull mechanism using a hydraulic cylinder 9 as an actuator is provided as shown in FIG. The tip of the piston rod of the hydraulic cylinder 9 is the test bench 1
And a base end of the hydraulic cylinder 9 is rotatably connected to the bracket 12 of the fixed base 11 via a horizontal shaft. . The shaft-coupled joint absorbs the vertical displacement caused by the horizontal displacement of the test table 1.

The hydraulic cylinder 9 is connected to a hydraulic source 14 via a servo valve 13, and expands and contracts with a stroke of about 2 meters. The servo valve 13 is electrically controlled by a control device (not shown), and the expansion and contraction operation of the hydraulic cylinder 9 is controlled by a stroke, cycle, and speed pattern according to an arbitrary program.

As shown in FIG. 2 and FIG. 3, four wires 16 each having a coil spring 15 in the middle thereof are suspended from the ceiling, and the lower ends of the wires 16 are connected near the four corners of the test table 1. Then, the test table 1 is pulled upward by the spring force of the coil spring 15 of each wire 16. The total pulling force of each spring 15 is set to about ／ of the total weight of the test bench 1 and the test chamber 4, and each wheel 2 does not rise from the rails 5 a and 5 b over the entire travel range of the test bench 1. Has been adjusted as follows. With this configuration, the weight applied to each wheel 2 is greatly reduced, and the traveling driving force of the test stand 1 is reduced, and traveling noise and vibration are reduced.

The operation of the rocking vibration test apparatus configured as described above will be described below.

A person who wants to experience rocking vibration of the upper floor of an ultra-high-rise building enters the test room 4 as shown in FIG. Then, the hydraulic cylinder 9 is driven to expand and contract according to a predetermined stroke, cycle and speed pattern, and the test table 1 is reciprocated along the rails 5a and 5b. In FIG.
When the test stand 1 travels to the left, the left wheel 2 goes down the slope along the left rail 5a, the right wheel 2 goes up the slope along the right rail 5b, and the test stand 1 leans to the left.
When the test stand 1 runs to the right, the left wheel 2 goes up the slope along the left rail 5a, the right wheel 2 goes down the slope along the right rail 5b, and the test stand 1 leans to the right.
In this way, horizontal movement and tilting movement are regularly combined, such as the movement of the upper floor of a skyscraper that rocks and vibrates, the distance to the center of oscillation is several hundred meters or more, and the period and amplitude are very large. A large tilting and swinging motion can be simulated.

Although the above-described embodiment is a two-dimensional tilting and oscillating motion, according to the embodiments shown in FIGS. 5 and 6, a three-dimensional and more realistic swinging of a skyscraper is simulated. Can occur.

FIG. 5 is a plan view of the angled slope. In this case, the angled inclined surface is composed of four panels 17 which are combined in a substantially quadrangular pyramid, and four spherical wheels 18 provided on the test table 1 are provided.
Are placed on each panel 17, and two systems of actuators for pushing and pulling the test table 1 in two orthogonal directions are added (not shown), and the test table 1 is reciprocated, swiveled, or round running on each panel 17. . As shown in FIG. 6, the panel 17 is a right-angled isosceles triangle, and the jack 6 provided on the lower surface side of the apex portion is moved up and down, so that the inclination angle of the panel 17 is variably set using the bottom portion of the panel 17 as a hinge. it can.

[0018]

According to the present invention, since the tilting movement is automatically generated in accordance with the horizontal movement of a large stroke, the distance to the swing center is several hundred meters or more with simple equipment and simple control. Thus, a slow tilting and oscillating motion having a very large period and a large amplitude can be generated. Therefore, it is possible to simulate the movement of the upper floor of a skyscraper that rocks and vibrate, so that it is possible to perform evaluation tests and various simulations on the livability of the ultra-high-rise building with simple equipment, realizing an ultra-high-rise building. Collect various data for.

If the mountain-shaped inclined surface is constituted by a rail which is linear in a plane and the test table is reciprocated along the rail, it is a two-dimensional tilting and oscillating movement. It can be implemented with simpler equipment and control. Further, the angled inclined surface is composed of four panels combined in a substantially quadrangular pyramid, and four spherical wheels of the test table are respectively mounted on the respective panels, and the test table is reciprocated, turned or circled. With such a configuration, a three-dimensional shaking of a skyscraper that is more realistic can be generated. Also,
If the test table is pulled upward by a suitable lifting means, and the weight applied to each wheel is reduced within a range in which the wheels do not rise from the angled slope, traveling of the test table becomes extremely smooth. In addition, unnecessary noise and vibration caused by traveling are not generated, and the power of the actuator for traveling the test table may be small. If the angle-adjusting mechanism for variably setting the angle of inclination is provided on the angled slope, the operating characteristics can be changed in various ways. In addition, if a test room simulating a room of a skyscraper is mounted on the test stand via the vibration isolating rubber, an evaluation test of the livability of the skyscraper in a very quiet environment is actually performed. Can be done accurately.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a form of rocking vibration of a super-high-rise building.

FIG. 2 is a front view of a rocking vibration test apparatus according to one embodiment of the present invention.

FIG. 3 is a side view of the same device.

FIG. 4 is a detailed view of a test table drive mechanism of the same device.

FIG. 5 is a plan view showing a main part of another embodiment of the present invention.

FIG. 6 is a partial perspective view of an inclined surface forming mechanism according to another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Test stand 2 Wheel 3 Anti-vibration rubber 4 Test room 5a, 5b Wheel 6, 6a, 6b
Jack 7 Guide wall 8 Side wheel 9 Hydraulic cylinder 10 Bracket 11 Fixed base 12 Bracket 13 Servo valve 14 Hydraulic source 15 Coil spring 16 Wire 17 Panel 18 Spherical wheel

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-115581 (JP, A) JP-A-57-103460 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G01M 7/02 G09B 9/00

Claims (6)

(57) [Claims] 1. A test stand having a plurality of wheels mounted at relatively large intervals projecting from a lower surface is provided, and the test stand is mounted on a mountain-shaped inclined surface. A rocking vibration testing device, wherein the rocking motion is performed by causing the test table to travel on the angled inclined surface with an appropriate actuator so as to make a rocking motion with an arrangement relationship that straddles the plurality of wheels. 2. The rocking vibration test apparatus according to claim 1, wherein the angled inclined surface is formed by a rail that is linear in plan, and the test table reciprocates along the rail. . 3. The angled inclined surface is formed by combining four panels into a substantially quadrangular pyramid, and four spherical wheels provided on the test stand are respectively mounted on the respective panels, and the test stand is provided. 2. The rocking test device according to claim 1, wherein the device performs reciprocating, turning, or round traveling. 4. The test table is pulled upward by an appropriate lifting means, and is configured to reduce the weight applied to each wheel within a range where each wheel does not rise from the angled slope. Claim 1 characterized by the following:
The locking test apparatus according to any one of claims 1 to 3, wherein 5. The rocking test apparatus according to claim 1, wherein an angle adjusting mechanism for variably setting the angle of inclination is attached to the angled inclined surface. 6. The rocking vibration according to claim 1, wherein a test chamber simulating a room of a skyscraper is mounted on the test table via a rubber vibration insulator. Testing equipment.