TWI468577B - Torsional anti-wind and anti-seismic system and process - Google Patents

Description

Torsional windproof seismic system and method

The present invention relates to a torsional wind-resistant system and method, and more particularly to a method for dissipating seismic energy by using a displacement mechanism generated between adjacent structures to generate energy dissipation through a torsion deformation mechanism.

According to the recent global catastrophic earthquakes, the occurrence of each major earthquake is often accompanied by the collapse of thousands and tens of thousands of lives, accompanied by the fragmentation of countless families. The disruption of traffic and telecommunications caused by strong earthquakes and the shackles of facilities have led to economic losses such as economic pauses and market losses, which are difficult to estimate; plus the social problems caused by the tens of thousands of victims being homeless, the people’s The impact of distrust and the decline of the country’s overall competitiveness have seriously affected the development of the country’s society.

For example, on March 11, 2011, a strong earthquake with a scale of 9.0 in the outer sea of Miyagi, Japan was launched. In addition to the collapse of the building structure and casualties, the huge earthquake energy release further caused up to twenty-three. The tsunami waves of high feet invaded the eastern coast of Japan, causing serious casualties and serious radiation leakage from the Fukushima nuclear power plant. The environmental pollution, economic losses and social costs caused by it are even more difficult to estimate. Taiwan and Japan are also in the Pacific Rim earthquake zone. The strong earthquake with a size of 9.0 or above in the same size may occur in Taiwan. The Chinese people have experienced the 921 episode of the Great Earthquake, and they have learned from the 311 strong earthquake in Japan. The shock resistance of the object should have a higher recognition.

The traditional building structure is designed and constructed according to the toughness design concept, allowing the building structure to produce plastic angle at the beam end to dissipate the seismic energy, emphasizing the concept that the small earthquake is not bad, the medium earthquake can be repaired, and the large earthquake does not fall, so as to reduce casualties. . However, for the building structure of the medical and fire protection system standing at the forefront of disaster relief, it will be even more important to immediately invest in disaster relief after the earthquake. Even if the building structure of the medical and fire protection system did not collapse during the earthquake, if the related medical and fire rescue equipment was displaced, dumped or even seriously damaged, it could not immediately be put into disaster relief work, which would further boost the earthquake. Casualties. In addition, for the production plants of high-tech manufacturers, the design concept of the stacked factory buildings leads to insufficient seismic resistance of the Fab layer. In addition to the structural damage to the structure, the production machine equipment inside the structure is also prone to displacement and overturning. It is difficult to put into production immediately after the earthquake, and it is difficult to estimate the losses caused by the shutdown of the plant and the loss of orders. Therefore, for medical buildings, energy dissipators, technology factories, shelters, etc., which emphasize the building structure that must maintain its functionality after the earthquake, its seismic design must be considered in a more active "functional design" direction. The application of the concept of "structural control" provides the possibility of installing a seismic device in the structure to absorb energy during the earthquake, share the seismic force with the structural members, reduce the structural vibration response, and enhance the structure. Shockproof safety.

In recent years, with the advancement of computer technology and materials technology, various innovative structural isolation and energy dissipating devices have been developed, including basic isolation, energy dissipation and active/semi-active control systems. Among them, the basic isolation and energy dissipation design are passive control systems, because there is no need for additional power supply, simple design, easy to grasp the behavior of the organization, and have more development potential.

Base isolation is an effective building anti-vibration method when it meets certain conditions. At present, many hospital buildings in the countries with strong earthquakes such as California, Japan and Taiwan have adopted this design. The isolation design extends the basic period of the structure by a flexible isolation support—the design target is usually between 2 and 3 seconds, avoiding the main vibration frequency of the earthquake to isolate the transmission path of the seismic force and reducing the seismic force that the structure must withstand. However, the application of isolation design has its premise, not all sites, any type of building can be applied. On the other hand, energy dissipation is an appropriate combination of the energy dissipating device and the structure, and the interlayer displacement or relative velocity of the structure during the earthquake is converted into the driving mechanism of the energy dissipating device, so that it absorbs the seismic energy, and further Improve the shock resistance of the structure. The energy dissipation and damping method has better reliability and economy, and has been widely accepted by the industry in recent years. As far as the principles of physics and vibration mechanics are concerned, any structure that constitutes an energy absorbing damping material or device must at least satisfy one of the two basic requirements of plastic deformation or flow resistance characteristics, which are subjected to extensive deformation of the metal material to withstand it. The stress exceeds the material's lodging strength, and the elastic behavior enters the plastic deformation, and then the energy is generated during the reciprocating motion. The resistance is related to the displacement deformation of the member, and is generally called a "displacement energy dissipating component". Metallic Yielding Damper, Buckling Restrained Braces (BRB), round bar stiffening energy damper, etc.; or using a damping device to form the relative motion between components, indirectly driving its inclusion The flow of liquid or semi-solid materials creates resistance, and the magnitude of the resistance is related to the flow velocity of the fluid. It is generally called the “speed-type energy dissipating component”, or the viscosity of the material itself produces a resistance to vibration, such as stickiness. Hysteretic flow Dampers (Viscous Fluid Damper). In addition, there is a "friction damper" developed by the principle of frictional energy dissipation. Since the dissipating energy is proportional to the relative displacement of the friction interface, the "friction damper" can also be classified as a "displacement energy dissipating element". The friction damper mainly achieves the purpose of dissipating seismic energy by the negative work done by the frictional force of the friction interface and the relative sliding displacement.

However, the comprehensive analysis of the force-dissipation mode of the existing damper can be found that the damper often utilizes the amount of interlayer displacement generated by the structure when the earthquake is applied, and the energy-transfer mode of different types causes the energy-dissipating component to be generated. A large amount of bending deformation or axial deformation causes the material to reach the stress and dissipate energy. However, in addition to the conventional bending and axial displacement, the method of causing the material to undergo large deformation and transformation into the plastic phase allows the material to undergo a large torsional deformation and also achieves the stress, and is generated during the repetitive motion. The effect of energy dissipation.

The present invention proposes a force mode that breaks through the traditional bending or axial deformation, so as to utilize the displacement between the layers of the floor and the design of the mechanism, so that the energy dissipating component generates a torsion deformation mechanism, so that the material reaches plasticity to dissipate the seismic energy. .

The main object of the present invention is to provide a torsional wind-resistant earthquake-damping system and method, which has a torsional deformation energy dissipation mechanism through the vibration-damping system, so that energy can be dissipated during the reciprocating motion, and the protection is ensured. The safety of the structure.

The above main objects and effects of the present invention are achieved by the following specific technical means:

The utility model relates to a torsional wind and seismic system, which comprises a fixed base, a rotating collar, a torsion element and an axial displacement base; the fixed base and the axial displacement base are respectively fixed on the two adjacent structures; the axial displacement The base protrudes from a shaft portion, the peripheral wall of the shaft portion has a spiral rib; the torsion element is fixed between the rotating collar and the fixed base, and the peripheral wall of the hole in the rotating collar is provided with a guiding groove corresponding to the spiral rib.

Accordingly, when the axial displacement base is displaced up and down between the rotating collars, the rotating collar can be rotated to cause the torsion component to be twisted, and the torsion component is deformed and subjected to the stress of the material after the reciprocating motion. The energy is dissipated to protect the structure.

That is, the present invention converts the displacement generated by the two structures into a torsion amount when the two structures are displaced by the vibration force by being connected between the two structures. In order to reduce the amount of displacement generated by the two structures during the reciprocating motion, the shock absorption effect can be achieved.

Wherein, in the preferred embodiment of the torsional wind-resistant shock-damping system as described above, the torsion element has a circular cross-sectional structure.

Wherein, in the preferred embodiment of the torsional wind-resistant shock-damping system as described above, the torsion element is a cylinder of uniform cross section.

Wherein, in the preferred embodiment of the torsional wind and vibration system as described above, the torsion element has a variable cross-sectional structure.

The present invention, through the arrangement of the above structure, will at least have the advantages described below:

1. The torsional wind and seismic system of the present invention does not require additional maintenance, and has no problem of aging and oil leakage. Therefore, it is more feasible and applicable when applied to energy dissipation of building structures.

2. The torsional wind and seismic system of the present invention transmits torsional deformation through axial displacement during reciprocating motion, and dissipates energy, thereby protecting the safety of the structure.

For a more complete and clear disclosure of the technical content, the purpose of the invention and the effects thereof achieved by the present invention, it is explained in detail below, and please refer to the drawings and drawings:

Referring to the first drawing, which is an exploded perspective view of the torsional wind and seismic system of the present invention, the second figure shows a three-dimensional combination of the torsional wind and seismic system of the present invention.

The torsional wind and seismic system of the present invention comprises: a fixed base (1), a rotating collar (2), a plurality of torsion elements (3), and an axial displacement base (4); wherein:

The fixed base (1) and the axial displacement base (4) are respectively fixed on two adjacent structural bodies; the axial displacement base (4) axially protrudes from a shaft portion (41), and the shaft is The peripheral wall of the portion (41) is provided with at least two helical ribs (42); the rotating collar (2) and the fixed base (1) fix the torque elements (3), and the rotating collar (2) An axial through hole (21) is disposed, and a peripheral wall (21) is provided with at least two guiding grooves (22), and the guiding grooves (22) correspond to the spiral ribs (42) And the spiral ribs (42) are correspondingly accommodated.

Through the above structure, the torsional wind-resistant vibration-damping method of the present invention is when the axial displacement base (4) is subjected to an axial vibration force F, due to the helical displacement of the axial displacement base (4) The rib (42) and the guiding groove (22) of the rotating collar (2) are embedded with each other, so that the axial displacement base (4) is axially displaced upward and downward, and the rotating collar is driven (2) Repeatedly rotating, the repeated rotation of the rotating collar (2) will cause torsional deformation of the torsion elements (3) to deform the force of the torsion element (3) to the material, and then reciprocate The energy is dissipated during the movement to achieve shock absorption and protect the safety of the structure.

In the preferred embodiment of the torsional wind and vibration system according to the present invention, the torsion element (3) may be made of a ductile metal material such as medium carbon steel, mild steel, alloy or copper. The longitudinal section of the torsion element (3) varies according to different boundary conditions and force transmission modes, and considers three different types of uniform section, variable section and curvature section, such as the third figure and the fourth figure. The fifth picture is shown.

Under the structural arrangement of the torsion element (3), when the torsional wind-resistant system of the present invention is twisted by the action of the torque, the torsion element (3) can be simultaneously applied to each elevation section. The fall is reached, and excessive stress and strain damage at both ends of the torsion element (3) can be avoided.

In addition, the torsional wind and seismic system of the present invention is joined to the H-shaped steel and is connected in a diagonally or seismically-damped wall type. When the structure is affected by the earthquake to produce the displacement between the layers, the axial displacement of the bracing or steel frame will be caused, so the axial displacement base (4) of the torsional wind-resistant system will be able to rotate the collar (4). 2) Repeatedly entering and exiting (see Figure 3). Since the surface of the axial displacement base (4) and the inner diameter of the rotating collar (2) have corresponding helical ribs (42) and guiding grooves (22), the axial displacement base (4) is rotated on the sleeve. When the ring (2) is displaced up and down, the rotating collar (2) can be driven to make the torsion element (3) torsion, and the torsion element (3) is deformed and stressed to reach the material's relief stress, and then reciprocated during the reciprocating motion. The dissipation of energy to protect the safety of the structure.

When the torsion element (3) has a circular cross-sectional structure, and the torsion element (3) is twisted by the torsion force, the torsion element (3) will dissipate energy after reaching the material relief stress, so the material is processed by different materials. The manufactured torsion elements (3) will have their own stress-strain curves. The torque experienced by the torsion element (3) can be expressed as:

　  　　　　　　　　　　　　　　　

Among them is the radius of the torsion bar, which is the shear stress of the material.

If the stress-strain relationship of the torsion element (3) is nonlinear or has no obvious point of relief, the torsion of the torsion element (3) can be rewritten as:

　　 　　　　　　　　　　　　　　　　

Among them, the maximum shear strain of the material can be determined by the material torque test.

When the torsion element (3) is a cylinder of uniform cross section, the torsional deformation curve of the torsional deformation caused by the torsion force T at both ends is consistent with the torque variation [refer to the fourth figure]. When the force exceeds the stress, the two ends of the torsion element (3) will first fall at the two fixed ends, and the plastic deformation will be limited to a limited range adjacent to the two solid ends. Still not reached.

When the torsion element (3) is a curved section structure (refer to FIG. 5), the axial elevation of the torsion element (3) changes in a curve, and has a better energy dissipation capability.

Referring to the sixth figure, the torsion element (3) is arranged in the same structure when the curvatures of the respective elevation sections are the same. When the torsion element (3) fixed at both ends is deformed by torque torsion, its torque distribution and its area and inertia The moment curve changes so that when the force reaches the stress, the whole torsion element (3) can be fully degraded, and each section enters the plastic stage at the same time, and has better energy dissipation capability.

The torsional wind and seismic system of the present invention can be installed in the structure by using a seismic wall or a diagonal bracing type in engineering practice; therefore, the installation method of the present invention can adopt a seismic wall according to different needs of the user or The diagonal bracing type is assembled.

The above is only a part of the embodiments of the present invention, and is not intended to limit the present invention. It is intended to be included in the scope of the present invention.

In summary, the embodiments of the present invention can achieve the expected use efficiency, and the specific technical means disclosed therein have not been seen in similar products, nor have they been disclosed before the application, and have completely complied with the patent law. The regulations and requirements, the application for invention patents in accordance with the law, and the application for review, and the grant of patents, are truly sensible.

(1). . . Fixed base

(2). . . Rotating collar

(twenty one). . . Middle hole

(twenty two). . . Guide groove

(3). . . Torque element

(4). . . Axial displacement base

(41). . . Shaft

(42). . . Spiral rib

The first figure: reveals the exploded view of the torsional wind and seismic system of the present invention

Second figure: reveals a three-dimensional combination diagram of the torsional wind and seismic system of the present invention

Fig. 3 is a perspective view showing the state of the torsional wind and seismic system of the present invention under stress

The fourth figure is a structural diagram showing the torsion component of the present invention and a schematic diagram of the force fluctuation

Fig. 5 is a schematic view showing the structure diagram and force drop of the two torsion elements of the present invention

Fig. 6 is a schematic view showing the structure diagram and stress drop of the three torsion elements of the present invention

(1). . . Fixed base

(2). . . Rotating collar

(twenty one). . . Middle hole

(twenty two). . . Guide groove

(3). . . Torque element

(4). . . Axial displacement base

(41). . . Shaft

(42). . . Spiral rib

Claims (6)

A torsional wind and seismic system includes a fixed base, a rotating collar, a plurality of torsion elements, and an axial displacement base; the fixed base and the axial displacement base are respectively fixed to two adjacent structures The axial displacement base protrudes from a shaft portion, and the peripheral wall of the shaft portion has a spiral rib; the torsion element is fixed between the rotating collar and the fixed base, and the rotating collar is provided with a middle hole The peripheral wall is provided with a guiding groove for receiving the spiral rib. The torsional wind and seismic system according to claim 1, wherein the torsion element has a circular cross section structure. The torsional wind and seismic system according to claim 1, wherein the torsion element is a cylinder of uniform cross section. The torsional wind and seismic system according to claim 1, wherein the torsion element is a variable cross-sectional structure. The invention relates to a torsional wind-resistant shock-sensing method, which mainly converts any kind of mobile vibrational kinetic energy between two structures up and down or left and right or obliquely, and acts on a torsion element disposed between two structures, and along The torsional deformation force of the torsion element rotating in the axial direction causes the torsion element to be twisted and deformed to dissipate energy. The torsional wind-resistant shock-damping method according to claim 5, which comprises the torsional wind-resistant shock-damping system according to any one of claims 1 to 4.