JPH0615795B2 - Anti-vibration and seismic combination structure of multiple tower structures - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to anti-vibration and vibration-proofing of tower-like structures such as unit racks, chimneys, tower tanks, cooling towers, exhaust towers, reaction towers and various iron towers. The present invention relates to a structure, and more particularly, to a vibration-proof and seismic combined structure of a plurality of tower-shaped structures.

[Conventional technology]

In general, when a plurality of tower-shaped structures are installed adjacent to each other, anti-vibration / seismic measures are taken independently for each structure.

FIG. 32 is a front view showing a unit type rack as an example of a tower-shaped structure. In this unit type rack 51, a large number of cantilever-shaped arms 53 are projectingly provided from a tower-shaped rack main body 52, and these arms are provided. The load 50 is hooked on each of the 53 to be stored, and the unit rack 51 is used as a three-dimensional automatic warehouse. Note that in FIG. 32, a wire wound in a coil shape as the load 50 is shown.

In this way, the unit type rack is formed with a certain depth so that the plurality of arms 53 arranged in the vertical direction are arranged in the horizontal direction (direction perpendicular to the paper surface in the drawing).

In general, many unit-type racks 51 as such a three-dimensional automated warehouse are installed adjacent to each other, but each rack 51 is installed against an external force such as an earthquake acting on each rack 51. 51 is designed to resist alone.

Further, as shown in FIG. 33, a stacker crane 54 may be provided between the two racks 51, 51 adjacent to each other for loading and unloading the load loaded on each rack. In this case, in order to support the guide rail 55 at the top of the stacker crane 51, the guide rail support member 5 is provided at the top of the racks 51, 51.
6 is installed, but the support member 56 does not provide the anti-seismic effect, and the anti-vibration and anti-seismic measures are taken by each rack alone.

[Problems to be solved by the invention]

However, in the conventional anti-vibration / seismic countermeasures for each structure in the tower-shaped structure, in particular, in the case of a tower-shaped structure having a large load weight such as the unit rack 51 for loading a heavy load, the inertia of the load is increased. Because the force is great, the structure of the structure and the structural material must be very strong,
Therefore, it causes a great financial burden.

The present invention is intended to solve the above-mentioned problems, and it is possible to economically and rationally perform vibration-proof and earthquake-proof measures for tower-shaped structures with a very simple structure. It is an object to provide a vibration-proof and seismic combination structure for structures.

[Means for solving problems]

Therefore, the vibration-proof and earthquake-resistant combination structure of a plurality of tower-like structures of the present invention, a plurality of tower-like structures having different vibration characteristics,
A damper mechanism that includes a beam member that connects the respective upper portions of these tower-like structures to each other, and that can restrain relative movement of the tower-like structures to the connecting portion between at least one of the plurality of tower-like structures and the beam member. And a shear pin mechanism are arranged side by side, and the shear pin mechanism is fixed to one of the both so as to operate at a predetermined movement amount of the relative movement, and the shear pin is disposed on the other of the both. It is characterized in that it is configured with an elongated hole that can guide the to the required stroke.

[Action]

In the vibration-proof and seismic-resistant combination structure of a plurality of tower-shaped structures of the present invention described above, one of the two tower-shaped structures connected to each other is induced by a vibration external force such as an earthquake to cause a horizontal vibration or the like. When the movement increases, the other of the two tower-like structures has different vibration characteristics from the one tower-like structure,
The motion induced by the vibration external force is very small, and the one tower-shaped structure also makes a relative motion with respect to the other tower-shaped structure, and the mutual movement of both structures with respect to this relative motion. The damper mechanism provided via the beam member operates between the
The movement of the one tower-shaped structure is suppressed.

The operation of the damper mechanism is stopped by the operation of the shear pin mechanism provided in parallel with the damper mechanism between the two tower-shaped structures. That is, when the relative displacement of the two tower-shaped structures reaches a predetermined value (predetermined movement amount), the shear pin engages with one end of the long hole provided in the shear pin mechanism,
The two tower-shaped structures transmit the force via the same shear pin, so that the relative displacement between the two structures does not increase any more, and the operation of the damper mechanism stops. After the operation of the shear pin, the displacement of one of the tower-shaped structures causes the displacement of the other tower-shaped structure together with the displacement (smaller than the displacement of the one tower-shaped structure by a required stroke provided in the shear pin mechanism. While displacing), the force applied to the one tower-shaped structure is shared to suppress the load and the displacement of the tower-shaped structure of the same side.

When a larger vibration external force such as a large earthquake is applied to the one tower-shaped structure, the shear pin breaks by itself, and acts to absorb the kinetic energy of the one tower-shaped structure due to the external force, After that, the damper mechanism again acts on the same tower-shaped structure, and the movement of the one tower-shaped structure is suppressed by the damper mechanism.

When one of the two tower-shaped structures connected to each other is deformed by a static external force such as an offset load, the displacement of the upper part of the one tower-shaped structure caused by the deformation is the predetermined value. Then, the shear pin operates, and as described above, the force applied to one tower-shaped structure is shared by the other tower-shaped structure, and the load and displacement of one tower-shaped structure are suppressed. .

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 to 24 show a vibration-proof and vibration-proof combination structure of a plurality of tower-shaped structures as a first embodiment of the present invention. FIG. 1 is a front view thereof, FIG. 2 is a perspective view thereof, and FIG. FIG. 4 is a perspective view of the damper mechanism, FIG. 4 is a sectional view of the damper mechanism, FIG. 5 is a side view of the shear pin mechanism, FIG. 6 is a side view showing a modified example of the shear pin mechanism, and FIG. FIG. 8 is a side view showing another modified example of the shear pin mechanism, FIG.
VIII arrow view, FIG. 9 is a side view of the sear pin, FIG. 10 is a side view showing a modified example of the sear pin, and FIG. 11 is three tower-like structures without the vibration-proof and seismic-resistant combined structure of the present invention. FIG. 12 is a front view showing a state in which each piece of luggage is loaded, FIG. 12 is a schematic view of the structure system in FIG. 11, FIG. 13 is a schematic view showing a primary vibration mode in the structure system, and FIG. FIG. 15 is a schematic diagram showing a secondary vibration mode in the same structure system, FIG. 15 is a schematic diagram showing an example of vibration mode when an external force such as an earthquake acts on the same structure system, and FIG. 16 is a schematic view of FIG. And FIG. 17 is a schematic front view showing an example in which a load is loaded on a structure provided with the structure of the present invention, and FIG. 18 is a case where a sheer pin mechanism is not provided in the load loaded state. Fig. 19 shows the displacement of FIG. 20 is a schematic view showing a displacement when a shear pin mechanism is provided, FIG. 20 is a schematic front view showing another loading example in a structure similar to FIG. 17, and FIG. Fig. 22 is a schematic diagram showing the displacement when the shear pin mechanism is not provided, Fig. 22 is a schematic diagram showing the case where the shear pin mechanism is provided in the loaded state, and Figs. 23 (a) and (b) are tower-shaped structures. FIG. 24 is a side view showing a structural example in the longitudinal direction, and FIG. 24 is a perspective view showing a modified example of the vibration-proof and vibration-proof combined structure of a plurality of tower-shaped structures according to the present invention.

As shown in FIGS. 1 and 2, in the first embodiment, three unit racks as tower-like structures are adjacent to each other, and the central unit rack 1 is formed to have a large width in the lateral direction 27. It has strong bending rigidity (unit rack 1 is called strong rack below), and unit racks 2 and 2 on both sides of it.
Are the ones having the same small width in the lateral direction 27 (half the width of the rack 1) and weak bending rigidity (the unit rack 2 is hereinafter referred to as a weak rack). A large number of cantilever-shaped arms 1a, 1b are provided on both sides of each rack 1, 2, 2 for loading loads as in the conventional case.

The top of the central strong rack 1 and the weak racks 2 and 2 on both sides of it
A plurality of beam members 3, 3 are arranged side by side in the lateral direction 27 while connecting both ends of the beam members 3 and 3 to the respective racks by pins 4. Especially the pin 4 at the top of the strong rack 1 in the center
Is the lid member 12 of the damper mechanism 7 as shown in the third and fourth parts.
The beam member 3 and the damper mechanism 7 are pin-coupled while fitting in the pin hole 6 of the eye plate 5 provided on the upper part.

The damper mechanism 7 includes a damper body 8 filled with a damping viscous fluid, a lid member 12 that covers an upper portion of the damper body 8, and a plate 10 horizontally fixed to a lower surface of the lid member 12 via a rod 9. It consists of and.

The engagement surfaces of the lid member 12 and the damper body 8 are slidable with respect to each other. At the time of the sliding, the lower surface of the plate 10 fixed to the lid member 12 side is the viscous fluid inside the damper body 8. While receiving the viscous frictional resistance, the damper mechanism 7 operates by preventing the mutual movement between the lid member 12 and the damper body 8.

Such a damper mechanism 7 is installed such that the damper body 8 is fixed on the rack top beam 13 at the top of the strong rack 1 in the center.

Between the cover member 12 of the damper mechanism 7 and the damper body 8, there are shear pin mechanisms 17, 1 as shown in FIGS.
Either 7'or 17 "is installed.

A shear pin mechanism 17 shown in FIG. 5 includes a pair of eye plates 14 and 14 fixed to the lower surface of the lid member 12 that is detached from the damper body 8, an eye plate 16 fixed to the outer side surface of the damper body 8, and a shear pin. The eye plates 14, 14, 16 are provided in parallel with the eye plate 5 fixed to the upper surface of the lid member 12. That is, as shown in FIG. 8, the eye plate 1
6 is fitted between the pair of eye plates 14 and 14, and eye plates 14 and 14 are provided with elongated holes 15 respectively. The eye plate 16 is provided with a circular hole, and the sheer pin 18 is inserted into the elongated holes 15 and 15 and the circular hole, and the head of the sheer pin 18 and the stop pin 19 prevent the sheer pin 18 from moving in the axial direction. In addition, when the damper body 8 and the lid member 12 slide, the elongated holes 15 of the eye plates 14, 14 that move together with the lid member 12 slide on the side surface of the shear pin 18. Has become.

Normally (when external force does not work), the shear pin 18 is a slot 1
When the lid member 12 and the damper body 8 slide relative to each other due to an external force or the like, the horizontal relative position of the lid member 12 and the damper body 8 changes, and The relative position between the shear pin 18 and the slot 15 also changes by the amount of change.

When the relative change between the rack 1 and the rack 2 is about to reach a predetermined value (predetermined movement amount) δcr or more, the shear pin 18 moves into the slot 1
The lid member 12 and the damper main body 8 are integrally moved horizontally by engaging with one of the both end surfaces of the member 5 via the shear pin 18.

As shown in FIGS. 8 and 9, the notch 2 is provided in the shear pin 18.
0 and 20 are arranged and installed at positions between the eye plates 15, 15 and 16, respectively.
If a force exceeding a predetermined limit is exerted between and 16 and notch 2,
Shear fracture occurs at the 0 part.

A shear pin mechanism 17 ′ shown in FIG. 6 includes a lid member 12 and an elongated hole 22 provided outside the damper body 8, a shear pin receiver 23 provided on an outer portion of the damper body 8, and a shear pin 2
1 and the sheer pin 21 covers the head with the lid member 1
It is installed while being engaged with the upper surface of No. 2 and being fixed to the lower portion inside the sheer pin receiver 23.

The shear pin 21 and the slot 22 are slidable with respect to each other, and operate in the same manner as the shear pin mechanism 17 described above. Further, as shown in FIGS. 6 and 10, the sear pin 21 includes a lid member 12 and a sear pin receiver 2 as shown in FIGS.
The notch 20 is provided only between the notch 3 and the notch 3.

The shear pin mechanism 17 ″ shown in FIG. 7 includes a shear pin hole 24 provided outside the damper body 8 of the lid member 12, a shear pin receiver 25 provided on the outer side of the damper body 8, and a shear pin 21. The sea pin 21 is fixed in the sea pin hole 24, and the lower part of the sea pin 21 is the sea pin receiver 2
5 can slide horizontally in the long groove 26, and this shear pin mechanism 17 ″ also operates in the same manner as the above shear pin mechanism 17.

Since the vibration-proof and vibration-proof combination structure of a plurality of tower-shaped structures as the first embodiment of the present invention is configured as described above, the arms 1a and 2a of the racks 1 and 2 have the first structure.
As shown in FIG. 1, a load 29 is loaded. The racks 1 and 2 and the load 29 are modeled and illustrated as mass points m of all the load 29 having substantially the same weight, as shown in FIG. Here, the racks 1 and 2 are indicated by straight lines, and the mass point m as the load 29 is indicated by a small circle. As the thickness of the straight line indicates the rigidity of the rack, the rack 1 having high rigidity is indicated by a thick solid line. The rack 2 having a low rigidity is indicated by a thin solid line (the width d ₁ of the rack ₁ is 2 of the width d ₂ of the rack 2).
Rack 1
Comprising bending stiffness I1 is four times the bending stiffness I ₂ rack 2).

In this way, the rack 1 and the rack 2 are modeled as pillars in which the mass points m are dispersed and the lower end is fixed, and each rack 1,
When the natural vibration analysis is performed from the relationship of the rigidity of 2, the first natural frequency f ₁ of the rack ₁ is the first natural frequency f _{2 of the} rack _2.
It's almost double that of the three modeled racks 1,
Considering 2 and 2 as one structure system, the vibration of this structure system is a primary vibration in which only the rack 2 vibrates at the primary natural frequency f ₂ of the rack 2, and the vibration is shown in FIG. Such a vibration form (first mode), and the first natural frequency of rack 1
At f ₁ , secondary vibration occurs, in which only rack 1 vibrates,
The vibration mode (secondary mode) as shown in the figure is adopted.

When an external force such as an earthquake is applied to the structure racks 1 and 2 having different vibration characteristics, the racks 1 and 2 perform different movements as shown in FIG. ₁ and δ ₂ , where the top displacement of the weak rack 2 is δ ₂ , δ ₁ and δ ₂ are not equal (δ ₁ ≠ δ ₂ ) and relative displacement δ (= | δ ₁ −δ ₂ |) is generated.

In contrast to this relative displacement δ, in the vibration-proof and seismic combination structure of a plurality of tower-shaped structures as the first embodiment of the present invention, the displacements of the racks 1 and 2 are slightly different from the above displacements due to the damping device. , The displacement of the strong rack 1 becomes δ ₁ ′ (δ ₁ ), and the displacement of the weak rack 2 becomes δ ₂ ′ ( ₂ ), which is a relative displacement δ ′ (= | δ ₁ ′ −δ ₂ '| Δ) is generated, but the damper mechanism 7 provided between the racks 1 and 2 works to reduce the relative displacement δ', and the kinetic energy of the rack that is largely moving is absorbed by the damper mechanism. 7 absorbs and damps its movement.

For example, when an external vibration force close to the first-order mode in which the rack 2 vibrates greatly such as seismic force is exerted, the rack 1 does not vibrate significantly, and a relative displacement δ ′ is generated between the top of the rack 1 and the top of the rack 2. The horizontal relative displacement δ ′ of the rack 1 is transmitted to the lid member 12 of the damper mechanism 7 via the beam member 3, and the relative displacement between the lid member 12 and the damper main body 8 provided on the rack 1 side is generated. The damper mechanism 7 acts so as to prevent movement.

When the relative displacement δ becomes larger than the predetermined value δcr, the shear pin mechanism 17 operates and both the rack 1 and the rack 2 start moving together, and the rack 1 moves due to its bending rigidity I _1. It works to suppress the movement of 2. At this time, the operation of the damper mechanism 7 is stopped.

Further, when a large external force such as an earthquake force acts and the shearing force applied to the shear pin 18 by the relative motion between the rack 1 and the rack 2 exceeds the breaking load of the shear pin 18, the shear pin 18
While breaking in the shearing direction at the notch 20, the rack 2
Absorbs the kinetic energy of. After the shear pin 18 is broken, the operation of the damper mechanism 7 is restarted again, and the damper mechanism 7 absorbs the kinetic energy of the rack 2.

Thus, the vibration damping effect of the vibrating body (in this case, the rack 2) can be obtained by the operation of the damper mechanism 7 and the shear pin mechanism 17.

Even when the rack 1 is in a secondary mode in which a vibration external force of a higher frequency acts to cause the rack 1 to mainly vibrate, the rack 2 does not vibrate much, and similar to the vibration isolation action in the above-described primary mode. The damper mechanism 7 and the shear pin mechanism 17 operate to obtain the vibration damping effect of the rack 1.

Generally, when a vibration external force acts on a structure, it is most dangerous that the frequency of the vibration external force is close to the natural frequency of the structure and the structure resonates with the external force. In the vibration-proof and vibration-proof combination structure of a plurality of tower-shaped structures as one embodiment of the present invention, the resonance motion of the structures is sufficiently suppressed even when an external force close to the number of intrinsic centers of the structures acts.

On the other hand, an example of a case where a static external force is applied to these racks 1 and 2 is shown in FIGS. 17 to 22. FIG. 17 shows both sides of the strong rack 1 at the center, both sides of the weak rack 2 at the right end, and the left end. This is a schematic representation of a state in which the load 29 is loaded only on the right arm 2a of the weak rack 2, and the downward arrow indicates the load 29.

FIG. 18 shows the case where only the damper mechanism 7 is installed and the shear pin mechanism is not provided.
Tries to bend to the right, but the damper mechanism 7 interposed between the weak rack 2 at the left end and the strong rack 1 at the center cannot counter such a static external force, so the left end The deflection of the weak rack 2 does not act on the central strong rack 1. However, the weak rack 2 at the right end, which is connected to the weak rack 2 at the left end through the beam members 3 and 3, is displaced in the same manner as the weak rack at the left end, so that the bending moment acting on the weak rack 2 at the left end due to one side load is applied. Are weak racks 2 and 2 at both ends
Then, while sharing the load, both are bent to the right by the bending amount δa to oppose the one-sided load. However, in the case where the shear pin mechanism 17 is attached, as shown in FIG. 19, when the flexure amount δa is about to increase to a predetermined value δcr or more, the shear pin mechanism 17 between the strong rack 1 and the weak rack 2 is The strong rack 1 also starts to bend together with the weak rack 2 (however, the bending amount δs of the strong rack 1 in this case is smaller than the bending amount δc of the weak rack 2 by a predetermined value δcr).

In this way, since a large one-sided load is also counteracted by the strong rack 1 at the center, the flexural both δc of the weak racks 2 and 2 on both sides are increased only slightly after exceeding the predetermined value δcr. Therefore, the bending force becomes a value smaller than both flexures δa when the shear pin mechanism 17 is not provided.

FIG. 20 shows a case where the central strong rack 1 is loaded on one side. In this case as well, the damper mechanism 7 cannot counter the static load, and only the strong rack 1 bends to the right.

In the case where only the damper mechanism 7 is installed and the shear pin mechanism 17 is not provided, the strong rack 1 always opposes the one-sided load, so that the strong rack 1 exhibits a large deflection amount δa ′ as shown in FIG. By installing the shear pin mechanism 17,
As shown in FIG. 22, when the flexure amount δc ′ of the strong rack 1 tries to increase to a predetermined value δcr or more, the shear pin mechanism 17
Is actuated to bend to the right along with the weak racks 2 and 2 on both sides and the strong rack 1 (deflection amount δ _{s ′} ), while opposing the one-sided load, the deflection amount δ c ′ of the strong rack 1 has a predetermined value δ cr. From the point of passing, the increase is only small, which is smaller than the deflection amount Δa ′ without the shear pin mechanism 17.

In this way, even if a static one-sided load is applied to a part of the structure system of the racks 1, 2, 2, the load is resisted by the entire structure system by the operation of the shear pin mechanism 17, so that the structure Local deformation of the system is suppressed and damage to the structure system is prevented.

In the present embodiment, the central rack of the three racks is a strong rack and the racks on both sides are weak racks. However, conversely, the central rack is a weak rack and the racks on both sides are substantially the same rack type. Even in the case of a strong rack, a multi-tower structure in which the damper mechanism and the sheer pin mechanism are provided at the top of the central rack and the central rack and the racks on each side are also connected by beam members in the same manner. With the vibration-proof and seismic-resistant combination structure described above, the same operation and effect as in the present embodiment can be obtained.

Further, as a method of giving different vibration characteristics to racks having substantially similar vibration characteristics, as shown in FIGS. 23 (a) and 23 (b), in the structure in the longitudinal direction 28 of the rack, The brace assembly 32 may be sparsely and densely arranged to change the rigidity of the rack.

That is, as shown in FIG. 23 (a), when the brace assembly 32 is densely provided on the structural surface in the longitudinal direction 28 of the rack, the structural rigidity of the rack is increased and the natural frequency is increased, and conversely, FIG. As shown in (b), when the brace assembly 32 is roughly provided, the rigidity of the rack is lowered and the natural frequency is reduced, and thus the change in the vibration characteristic is given.

Further, in this embodiment, the beam member 3 that connects the tops of the racks 1, 2, and 2 is provided in the short-side direction 27 of the structure system of the racks 1, 2, and 2. Then
The damper mechanism 7 and the sheer pin mechanism 17 are attached to each rack 1,
2 acts only in the lateral direction 27, and does not act in the longitudinal direction 28 of each rack 1, 2.

Therefore, as shown in FIG. 24, the beam member 3 is attached to the rack 1,
If the brace structure 33 is arranged in a direction that includes both the short-side direction 27 component and the long-side direction 28 component in the structure system of 2, 2, the short-side direction 2 of the rack 1, 2, 2 structure system.
The damper mechanism 7 and the sheer pin mechanism 17 act in the longitudinal direction 28 together with 7, so that the vibration damping effect in both directions 27 and 28 can be obtained.

Next, the second embodiment of the present invention will be explained.
31 show a vibration-proof and vibration-proof combined structure of a plurality of tower-shaped structures as a second embodiment of the present invention. FIG. 25 is a front view thereof, and FIG. 26 is a vibration-proof and vibration-proof combined structure of the present invention. Fig. 27 is a front view showing a state in which a load is respectively loaded on two tower-like structures having no structure, Fig. 27 is a schematic view of the structure system in Fig. 26, and Fig. 28 is a primary vibration mode in the structure system. Fig. 29 is a schematic diagram showing a secondary vibration mode in the same structure system, Fig. 30 is a schematic diagram showing an example vibration mode when an external force such as an earthquake acts on the same structure system, FIG. 31 is a front view schematically showing FIG. 25.

As shown in FIG. 25, the structure of the vibration-proof and vibration-proof combination structure for a plurality of tower-shaped structures according to the second embodiment is The beam member 3 that connects the weak rack 2 and the weak rack 2 on the same right side to the strong rack 1 at the center is removed, and all other members have the same configuration as the first implementation order. Has become.

That is, a strong rack 1 on the right side and a weak rack 2 on the left side are erected, and the tops of both racks 1 and 2 are pin-coupled via a beam member 3, and on the rack top beam 13 on the top of the right strong rack 1. Is provided with a damper mechanism 7 and a shear pin mechanism 17.

Since the vibration-proof and seismic-resistant combined structure of a plurality of tower-shaped structures in this embodiment is configured as described above, the same effects as those of the first embodiment can be obtained as follows.

FIG. 26 shows the load 2 on each arm 1a, 2a of both racks 1, 2.
9 is a front view showing an example in which 9 racks are stacked. As shown in FIG. 27, the front view can be modeled as a pillar in which mass points m are dispersed and only the lower end is fixed. , 2
When the vibration analysis of the rack 1 is performed, as in the first embodiment, the rack 1
1st natural frequency f ₁ of rack 2 is almost 2 of natural frequency f ₂ of rack 2
1 of the structure system consisting of two racks 1 and 2
In the second vibration mode, only the rack 2 vibrates as shown in FIG. 28 (the frequency at this time is f ₂ ), and the second vibration mode is the second vibration mode.
As shown in FIG. 9, only the rack 1 vibrates (the frequency at this time is f ₁ ).

When an external vibration such as an earthquake acts on the above structure system, the racks 1 and 2 move differently, and the displacement δ ₁ of each rack top,
[delta] ₂ (displacement [delta] ₁ of rack 1, a rack displacement [delta] ₂ of 2) different ([delta] ₁ ≠ [delta] _2), relative displacement to both the rack top ([delta] = |
δ ₁ −δ ₂ |) is generated.

At this time, as shown in FIG. 31, when the damper mechanism 7 is attached to the structure system, the displacements of the racks 1 and 2 are slightly different from those of the strong rack 1 as in the first embodiment.
Is δ ₁ ′ (δ ₁ ) and the weak rack 2 is δ ₂ ′ (δ ₂ ), which is a relative displacement δ ′ (= | δ ₁ ′ −δ ₂ ′ | δ) is generated and the damper mechanism 7 acts so as to prevent the relative displacement δ ′, so that the movement of the structural system is largely damped while suppressing the relative movement.

Further, depending on the magnitude of the displacement between the racks, as in the first embodiment, the shear pin mechanism 17 operates to absorb the kinetic energy due to the external force in the structure of the two racks 1 and 2 or to further increase the force. On the other hand, the shear pin 18 is broken to absorb the kinetic energy.

Further, also in terms of static load, the bending moment applied to the rack 2 (or 1) due to one side load is shared by the other rack 1 (or 2) via the shear pin mechanism 17, and the external force is applied to the entire structure system. Since they oppose each other, the local deformation of the structure system is suppressed, and the destruction of the structure system is prevented.

〔The invention's effect〕

As described in detail above, according to the vibration-proof and seismic combination structure of a plurality of tower-shaped structures of the present invention, a plurality of tower-shaped structures having different vibration characteristics from each other and upper portions of these tower-shaped structures are mutually connected. And a beam mechanism that is capable of restraining relative movement between the at least one of the tower-shaped structures and the beam member. A shear pin mechanism is fixed to one of the two so that the shear pin mechanism operates at a predetermined movement amount of the relative movement, and an elongated hole that is disposed on the other of the both and that can guide the shear pin to a required stroke. With a simple structure that is configured with, when a minute vibration external force such as passing by a heavy vehicle works, the damper mechanism operates and a reliable vibration damping effect is obtained, and when a large vibration external force due to an earthquake etc. acts. Sea pin machine Is activated, the movement of each structure is suppressed while counteracting the external force in the entire structure system, and when a large vibration external force acts such as a large-scale earthquake, the shear pin absorbs the kinetic energy of the structure while shear breaking. Damping the structure's motion, and after the shear pin breaks, the damper mechanism operates again to dampen the structure's motion, so that the damper mechanism or the shear pin mechanism always works to reliably suppress the vibration in the structure system. It is possible to obtain a sufficient seismic effect.

In addition, even when a static load acts on the structure and a bending moment is applied to the structure, static deformation is reliably suppressed while countering the bending moment in the entire structure system via the shear pin mechanism. This also has the advantage of preventing damage to the structure system.

[Brief description of drawings]

1 to 24 show a vibration-proof and vibration-proof combination structure of a plurality of tower-shaped structures as a first embodiment of the present invention. FIG. 1 is a front view thereof, FIG. 2 is a perspective view thereof, and FIG. FIG. 4 is a perspective view of the damper mechanism, FIG. 4 is a sectional view of the damper mechanism, FIG. 5 is a side view of the shear pin mechanism, FIG. 6 is a side view showing a modified example of the shear pin mechanism, and FIG. FIG. 8 is a side view showing another modified example of the shear pin mechanism, FIG.
VIII arrow view, FIG. 9 is a side view of the sear pin, FIG. 10 is a side view showing a modified example of the sear pin, and FIG. 11 is three tower-like structures without the vibration-proof and seismic-resistant combined structure of the present invention. FIG. 12 is a front view showing a state in which each piece of luggage is loaded, FIG. 12 is a schematic view of the structure system in FIG. 11, FIG. 13 is a schematic view showing a primary vibration mode in the structure system, and FIG. FIG. 15 is a schematic diagram showing a secondary vibration mode in the same structure system, FIG. 15 is a schematic diagram showing an example of vibration mode when an external force such as an earthquake acts on the same structure system, and FIG. 16 is a schematic view of FIG. And FIG. 17 is a schematic front view showing an example in which a load is loaded on a structure provided with the structure of the present invention, and FIG. 18 is a case where a sheer pin mechanism is not provided in the load loaded state. Fig. 19 shows the displacement of FIG. 20 is a schematic view showing a displacement when a shear pin mechanism is provided, FIG. 20 is a schematic front view showing another loading example in a structure similar to FIG. 17, and FIG. Fig. 22 is a schematic diagram showing the displacement when the shear pin mechanism is not provided, Fig. 22 is a schematic diagram showing the case where the shear pin mechanism is provided in the loaded state, and Figs. 23 (a) and (b) are tower-shaped structures. FIG. 24 is a side view showing a structural example in the longitudinal direction, and FIG. 24 is a perspective view showing a modified example of the vibration-proof and vibration-proof combined structure of a plurality of tower-shaped structures according to the present invention.
5 to 31 show a vibration-proof and vibration-proof combination structure of a plurality of tower-shaped structures as a second embodiment of the present invention. FIG. 25 is a front view thereof, and FIG. 26 is a vibration-proof and vibration-proof combination of the present invention. FIG. 27 is a schematic view of the structure system shown in FIG. 26, and FIG. 28 is a primary vibration in the same structure system. Fig. 29 is a schematic diagram showing modes, Fig. 29 is a schematic diagram showing secondary vibration modes in the same structure system, and Fig. 30 is a schematic diagram showing examples of vibration modes when an external force such as an earthquake acts on the same structure system,
FIG. 31 is a front view schematically showing FIG. 25, and FIGS. 32 and 33 are front views showing a conventional tower-shaped structure, respectively. 1 ... Strong rack, 1a ... Arm, 2 ... Weak rack, 2
a ... arm, 3 ... beam member, 4 ... pin, 5 ... eye plate, 6 ... pin hole, 7 ... damper mechanism, 8 ... damper body, 9 ... rod, 10 ... plate, 11 ... Viscous fluid, 12 ... Lid member, 13 ... Rack top beam, 14
...... Eye plate, 15 ...... elongated hole, 16 ...... Eye plate, 17, 17 ', 17 "...... Shear pin mechanism, 18 ......
Shear pin, 19 ... Stop pin, 20 ... Notch, 21 ...
… Shear pin, 22 …… Oval hole, 23 …… Shear pin receiver, 2
4 ... Shear pin hole, 25 ... Shear pin receiver, 26 ... Long groove, 27 ... Short side direction, 28 ... Longitudinal direction, 29 ... Loading, 30 ... Primary mode, 31 ... Secondary mode, 32
…… Brace assembly, 33 …… Brace structure, f ₁ …… First natural frequency of rack 1, f ₂ …… First natural frequency of rack 2, I ₁ …… Bending rigidity of rack 1, I ₂ … ... rack 2
Flexural rigidity, m ... mass point as cargo, δ ₁・ ・ ・ top displacement of rack 1, δ ₂・ ・ ・ top displacement of rack 2, δ,
δ '... Mutual displacement between rack 1 and rack 2, δcr ... Predetermined value (predetermined displacement value), δa, δa', δc, δc ', δ
s, δs' ... Deflection amount.

Claims (1)

[Claims] 1. A tower structure comprising a plurality of tower-shaped structures having mutually different vibration characteristics, and a beam member interconnecting respective upper portions of these tower-shaped structures, wherein at least one of the plurality of tower-shaped structures and the above A damper mechanism and a shear pin mechanism capable of restraining the relative movement of the both are arranged side by side at the connecting portion with the beam member, and the shear pin mechanism operates in a predetermined movement amount of the relative movement so that one of the two A vibration isolator for a plurality of tower-shaped structures, characterized in that it is provided with a shear pin fixed to the above and an elongated hole which is disposed on the other side of the both and which can guide the shear pin to a required stroke. Earthquake resistant combination structure.