JP2011117585A - Pendular movement type origin self-reset type three-dimensional base isolation apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively prevent a base-isolated object from collapsing and breaking down in the event of an earthquake causing excessive vertical acceleration thereto by reducing and absorbing the response acceleration of a base isolation apparatus or base-isolated object. <P>SOLUTION: A cylindrical piston with a built-in coil spring (coil spring piston body) A suspends an entire constant load applied to the point of a universal joint A-2 from the point of a coil spring suspension shaft A-1 to reduce longitudinal and lateral acceleration. Guide rollers mounted crosswise in a lower guide rail 2-1 and an upper guide rail 1-1 convert three-dimensional arc motion applied to the point of the universal joint A-2 into planar motion. Steel plates pressure-regulated by bolts from both sides of the crossed roller region develop frictional resistance to reduce excessive force. A property of pendular movement origin self-reset at the point of the universal joint A-2 provides a return to the working origin prior to earthquake motion. As to vertically upward acceleration, cylindrical arm parts mounted with coil springs of coil spring slide parts L telescope to reduce the vertically upward acceleration effectively. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The invention relates to a device for reducing seismic isolation in a three-dimensional direction, which has been invented so as to effectively attenuate and reduce the occurrence of excessive vertical acceleration on the seismic isolation object when an earthquake occurs.

Coil spring piece fixed type and hydraulic pressure using a device equipped with an iron ball type rolling or laminated rubber or a two-dimensional acceleration reducing device in an air pressure type device for the purpose of reducing the vertical acceleration extending in the vertical and lateral directions. In recent years, seismic isolation devices that use dampers have attracted the most attention, and some have seen widespread use. It must be arranged, and it is a large-scale work in progress, and downsizing of the apparatus is currently urgently required. For this reason, the equipment cost and the installation cost cannot be reduced, and the problem is that it takes too much time to spread. In addition, seismic isolation devices that technically require a high level of horizontal accuracy at the time of site construction have been widely used, and many of the devices that protect against earthquake motion, such as precision machinery and computer artwork, are characterized by reduced planar motion. There are many seismic devices, and seismic isolation devices for general detached houses are widely used both at home and abroad. At present, seismic isolation devices having a reduction function for three-dimensional dynamic acceleration have not been seen.

JP, 2003-097638, A By using two or more spheres, it is a two-dimensional motion-attenuating seismic isolation device that reduces the acceleration and receives the force. JP, 2003-097636, A (Gazette) It is as a device which attenuates surplus acceleration with a friction damper. JP, 2003-097637, A (Gazette) It is an apparatus which receives force with respect to response acceleration using rolling of a restoration slope of multiple sphere use.

At present, many seismic isolation devices require advanced installation technology and high precision horizontal level installation technology such as single-ball type rolling bearings, and are installed at the exact positions of many seismic isolation devices themselves. It is extremely difficult.

Also, the influence of vertical acceleration on seismic isolation objects when an earthquake occurs can be seen in the conventional technology in terms of two-dimensional reduction with respect to vertical acceleration, and it is possible to reduce the three-dimensional dynamic acceleration as a single object. No seismic device is seen. At the end of the earthquake, the two-dimensional reduction device is often used by combining the self-return to the origin and the technology to return the seismic isolation object to the starting point in combination with a damper or a single ball type rolling bearing. No seismic isolation device has been formed to reduce the three-dimensional dynamic acceleration as a single object with functions.

1 is inserted into the inside of the washer of the cylindrical semispherical body with the suspension shaft of A-1 in FIG. 1 as the suspension shaft of the coil spring built-in type in FIG. Along with the periodic motion, all constant loads are suspended from the fixed point, and the point A-2 in Fig. 1 corresponds to the vertical acceleration front / rear and left / right directions, using the self-reset of the origin of the pendulum motion, It is configured to return by attractive force, and in order to bring back the origin self-return with the conventional acceleration reduction technology, it is necessary to operate multiple devices at the same time by mechanical mechanism. This is a three-dimensional motion seismic isolation device characterized in that it can be solved by the invention of this seismic isolation device.

11 is inserted into the cylindrical semicircular spherical washer jig of FIG. 11 shown in FIG. 11 by inserting the coil spring built-in piston mandrel of A-4 in FIG. 11 to fix A-1 in FIG. Make a certain periodic movement around the point. This is a washer-type jig for reducing the frictional resistance generated at this time by the washer of the cylindrical semispherical body of A-5 in FIG. It is.

The load applied to the mandrel of the piston with a built-in coil spring of A-4 in FIG. 11 described in “0006” and receiving a constant load at the time of no vibration is the first load, and the deflection ratio of the spring load / stress characteristic is from 20%. Set within the range of 40% and suspend all constant loads extending to A-2 in FIG. The load received during acceleration is the second load, and it acts within the spring usage range of 80% to 98% with respect to the front / rear / left / right acceleration extending to A-2 in FIG. It is characterized by reducing the acceleration when it is made to work. The three-dimensional motion isolation device is characterized in that the constant load deflection ratio is adjusted by rotating the nut 4 in FIG.
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2 and the upper roller D-1 and D shown in FIG. 2 and the lower part of the apparatus similar to the alphabet H in FIG. 2 mounted inside the guide rail 1-1 shown in FIG. The roller roller E-1 and the bearing roller composed of the four wheel shafts of E are crossed and connected to the center part of the fuselage of FIG. This is a three-dimensional motion seismic isolation device characterized in that the vertical longitudinal and lateral accelerations can be reduced by converting the longitudinal and longitudinal lateral motions along the straight line inside the crossed guide rail.
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In FIG. 5, the entire apparatus shown in FIG. 5 is subtracted from 3% to 10% of the entire constant load, and the state in which the underload is distributed to the H apparatus base in FIG. 1 is maintained. The horizontal balance of each floor load of the seismic isolation object due to rattling of the clearance from the entire device during vertical acceleration is maintained. At the same time, it is a three-dimensional motion seismic isolation device that can effectively prevent rattling noises and the like.
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The inside of the crossed guide rail C-type steel material described in “0009” is formed on the both sides of the center portion of the bearing roller composed of the four wheel shafts of FIG. A friction member is provided, and a flat steel material is used for B-1 in FIG. 7 at the opposite part, and the bolt member shaft in S in FIG. 7 inserted through the coil spring of BN in FIG. 7 is guided through R1 in FIG. The nut is pressed and pinched through the hole, and the nut member N in FIG. 7 screwed into the bolt member S in FIG. 7 is rotated to adjust the pressure. As a result, frictional resistance is generated and the surplus force of the acceleration is reduced, and the braking device function is provided by the function of all the devices Q1 and Q2 in FIG. 7, and the acceleration reduction width is obtained by rotating the nut member S in FIG. It is a seismic isolation device that is characterized in that it can be controlled. As described above, the three-dimensional motion isolation device is characterized in that it is possible to eliminate the need for a hydraulic device or a rubber layer type device having a damper function.

1 according to the vertical acceleration in the vertical direction of the present invention is linked to the center of the vertical axis of both arms shown in FIG. And the constant load was set so that the height of the spring use range of the first load of the spring load / stress characteristics exceeded the specified height at the first load. In the absence of vibration, the set width is always kept at 0% of the AC coil spring deflection rate in FIG. 4, and absorbed and reduced by utilizing the contraction of the arm portion where the coil spring is mounted on the cylindrical slide portion in FIG. This is a 3D motion seismic isolation device characterized in that vertical vertical acceleration can be reduced.

For the wind fluctuation fixing device other than the seismic motion, the tip of the bolt type piston round steel bar with the built-in AC coil spring of FIG. 12 and the A23 main caster caster of FIG. It is characterized in that it is dropped into a semicircular spherical shape in the center of the A21 disk-shaped steel plate and the pressure can be adjusted by rotating the nut A22 in FIG. In addition, for the wind fluctuation fixing device, the release adjustment reference value at the time of occurrence of earthquake motion is set separately, and the wind fluctuation adjusting function fixing device is installed inside the seismic isolation device, so that the wind fluctuation fixing device can be finely adjusted. It is a 3D motion seismic isolation device characterized by being possible.

In accordance with the design documents and the like planned in advance at the technical level at the time of construction, both the arm portions linked to 1 in FIG. 1 and 1-1 and 2- in FIG. The C-type steel material above and below the crossed guide rail of 1 has a mechanism in which the guide roller shown in Fig. 2 is installed to contact the base of the seismic isolation device, and there is an error in the balance due to each floor load of the seismic isolation object Even if this occurs, the level is maintained. The range of height difference between each device is a lens type or radio wave level level, and the horizontal / vertical direction is based on the error unit range within 1 / 1mm, and is 1 / 100mm or 1 / 1000mm seismic isolation. Equipment installation accuracy is not required. As described above, it is constructed with a range of technical skills that do not have high precision, and is a construction method characterized by not requiring highly skilled engineers.

The present invention can be installed and used in a state where the entire range of functions of the three-dimensional dynamic acceleration seismic isolation device having the configuration shown in FIG. 1 to FIG. 12 (excluding FIGS. 8 and 9) is rotated by 180 degrees. This is a seismic isolation device.

This is a three-dimensional motion seismic isolation device characterized by effectively preventing the seismic isolation target object from collapsing or damaging due to response acceleration by the function of all the functions described so far.

As described above, the present invention suspends all constant loads from a fixed point and uses the self-reset of the origin of the pendulum motion, and the guide roller 1-1 of FIG. 1 and the guide rail 2-1 of FIG. It is characterized in that the three-dimensional circular arc motion over the two crossed guide rollers is guided to a planar motion and is naturally returned to the starting point of the operation by attractive force.
At the same time, the contraction function of the arm portion L in FIG. 1 works to reduce the acceleration from the downward direction. By combining these three functions, it is possible to reduce the acceleration in the three-dimensional direction.
In addition, it is functioning by having a mechanical mechanism that does not require an electric power source even after the failure of the lifeline due to repeated aftershocks, etc., and it is a seismic disaster that targets general detached houses and is subject to seismic isolation. Objects can be reduced more effectively than acceleration, and life and property can be protected from earthquake disasters. In particular, the seismic isolation object can be effectively preserved from collapsed damage even from several tens or hundreds of preseismic earthquakes since the earthquake occurred. In addition, damage to household goods etc. is effectively reduced and minimized. It is a 3D motion isolation device characterized by things.

FIG. 3 is a front sectional view of a three-dimensional motion isolation device. FIG. 4 is a perspective view of a 4-axis wheel bearing roller. These are sectional views of the upper and lower guide rollers and the upper and lower guide rails. FIG. 3 is a cross-sectional side view of a three-dimensional motion isolation device. FIG. 4 is a perspective view of FIG. 3. FIG. 4 is a perspective view of coil springs of the device base portion, the cross guide rail and the arm portion. FIG. 4 is a plan view of a QQ cross section of FIG. 3. FIG. FIG. FIG. 2 is an elevational sectional view of a cylindrical piston with a built-in coil spring. FIG. FIG. 3 is a perspective view of a wind fluctuation fixing device.

The seismic isolation device of the present invention is a two-story building and a three-story building of a wooden structure and a steel-framed building of a general detached house as shown in the plan view of FIG. 9 and the plan view of FIG. This is a seismic isolation device for vertical acceleration, up to construction, with an example of a building area of 50m ² on the plan view of Fig. 9, and installation of seismic isolation devices for ordinary detached houses. The implementation plan is based on the number 6, and the number of seismic isolation devices is changed by changing the area of the seismic isolation object.

For production, it is designed to simplify technical problems with precision and to reduce production costs. In addition, it is possible to easily describe in the house design book and to shorten the construction period significantly. Regarding usage, the floor area per general detached house is planned to be 70 m ² or more, and the implementation plan is based on 6 or more seismic isolation equipment standards.

DESCRIPTION OF SYMBOLS 1 Fixed arm from foundation 2 Fixed arm from foundation 3 Lock nut 4 Spring stress adjustment nut 5 Cylindrical semispherical body Zagane 1-1 Upper guide rail 1-B Building foundation receiving H-shaped steel 2-1 Lower guide rail A Coil spring piston Main body AA Coil spring A-C Stopper A-1 Coil spring suspension shaft A-2 Universal joint A-3 Piston mandrel insertion hole A-4 Piston mandrel A-5 Piston mandrel insertion hole A21 Flat steel circular plate A22 Adjustment nut A23 Menchuchi caster B-1 Brake friction plate steel BN Coil spring BP Roller friction zone D Upper guide roller right D-1 Upper guide roller left E Lower guide roller right E-1 Lower guide roller left F Guide roller connecting steel GH Steel base support GL Ground Line H Device picture base H-1 Fixed insertion hole J Seismic isolation device installation position K Iron Reinforced concrete underground beam L Coil spring / slide part M Seismic isolation object N Nut Q1 Range Q2 Range R1 Brake insertion hole S Bolt

Claims (10)

A center point of the upper part of the brich-type arm extended from the opposite sides of the base of the base isolation device and the center of the lower part of the arm resembling a U-shape extending downward and coupled to the base of the base isolation object are mutually connected. In the meantime, a coil spring built-in type piston mandrel is inserted through the inside of the washer of the cylindrical semispherical body with the upper center as a fixed point. In addition, from the fixed point at the center of the upper part, it is configured to return to the starting point before the occurrence of the earthquake motion by using the periodic self-returning property of the pendulum motion by suspending all constant loads at this point and suspending the constant load around this one point. This is a seismic isolation device. The cylindrical semispherical body washer according to claim 1 allows a piston spring with a built-in coil spring to be inserted inside the washer, and to perform a constant periodic motion around the fixed point, at the fixed point suspension shaft portion. A washer-type jig characterized by reducing frictional resistance by a cylindrical semispherical body. The coil spring built-in type piston mandrel is suspended in the range of 20% to 40% when the constant rate of the whole load is extended to the mandrel of the piston with built-in coil spring and the deflection rate of the spring load / stress characteristics is set during no vibration. Also, the nut member screwed onto the upper part of the bolt member is rotated to freely adjust the deflection rate of the coil spring, and the constant load is set within the range of 80% to 98%, and the coil spring built-in type piston mandrel is suspended. This is a constant load deflection ratio adjustable type seismic isolation device characterized by maintaining the lowered state. Along with the self-returning property of the pendulum movement of claim 1, the lower groove of the guide rail C-type steel material crossing the vertical, longitudinal, left-right acceleration is connected to the apparatus body upward, and the upper C-type steel material is Fix downward from the bottom of the arm linked from the base side. A device in which the center part of the bearing roller body composed of four wheel shafts resembling the upper case of the alphabet H is vertically cross-connected in the interior where the C-shaped steel material is provided with a distance and is not connected is operated in the front-rear and left-right directions. The seismic isolation device is characterized in that the arc motion of the pendulum generated at this time is converted into a vertical plane motion in the horizontal direction. 5. The lower groove of the crossed guide rail C-type steel material according to claim 4 is connected to the apparatus main body upward, and the upper C-type steel material is fixed downward to the lower side of the arm portion interlocked from the building base side. And each C-shaped steel material is crossed in a state of being opposed in an unconnected state, and the center part of the bearing roller body composed of a four-wheel shaft resembling an alphabetic H capital letter is provided at a distance and cross-connected vertically. Thus, the seismic isolation device is characterized in that it is distributed as a downward load in the downward direction in the range of 3% to 10% of the total constant load, in combination with the entire range of claim 3. 5. A frictional portion is provided on both sides of the center portion of the bearing roller body composed of a four-wheel shaft resembling the alphabet capital letter H, and the inside of the crossed guide rail C-type steel material according to claim 4 is long on opposite side surfaces. A coil spring is inserted through the bolt member shaft attached in a T-shape to three steel pieces, and is pressed with a nut member screwed into the bolt member shaft through the insertion holes on both outer sides of the C-type steel material. This is a seismic isolation device characterized in that it is a reduction device with a surplus force adjustment function that enables a brake device mechanism (damper mechanism) that reduces the surplus force of acceleration. A cylindrical slide part is installed at the center of the vertical axis of both arm parts linked with the building foundation, and a coil spring is attached. The constant load is the first load of the first load of the spring load / stress characteristic. The seismic isolation feature is set to exceed the specified height at the time of one load, and the set width is always kept at 0% for the coil spring when there is no vibration to reduce the vertical vertical acceleration. Device. From the outer edge of the brich-type arm that extends upward from the base of the seismic isolation device, the tip of the bolt-type piston round steel bar with a built-in coil spring is installed upward, and the building base is placed at the opposite location. A disc-shaped plate steel plate is installed on the lower surface of the fixed H steel material, and the tip of the main caster casts downward from the center portion of the H-steel pierced into a semicircular sphere. The nut member screwed into the lower part of the bolt is rotated to adjust the pressure. This is a seismic isolation device characterized by a fixing device with a function of adjusting wind fluctuations other than earthquake motion. At the time of installation, according to the technical standards planned in advance, the structure where both arm parts linked from the building foundation and the crossed guide rail C-shaped steel material above and below the base part of the seismic isolation device Even if an error occurs in the balance of each floor load of a fixed load, the levelness is maintained. As a result, the installation standard for the height difference between the devices is set to be 1/100 mm or 1/1 mm by using a lens type or radio wave level level, and the horizontal and vertical error range is 1/1 mm or less. 1000mm seismic isolation device installation accuracy is not required. As described above, it is constructed with a range of technical skills that do not have high precision, and is a construction method characterized by not requiring highly skilled engineers. The present invention is a seismic isolation characterized in that it can be installed and used in a state where the entire range of configurations and functions extending to the three-dimensional dynamic acceleration seismic isolation device described in claims 1 to 9 is rotated 180 degrees. Device.

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