JP5622130B1 - Hanging base isolation structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a building from collapsing due to earthquake motion and to realize damage caused by storm water at low cost. A suspension structure [2] is provided between a base frame [1] having a raised floor to prevent inundation and a floor frame [3], and velocity energy is converted into potential energy. [Selection] Figure 2

Description

  The present invention relates to a seismic isolation structure for disaster prevention of buildings in the Pacific Rim earthquake zone, Indian Ocean seismic zone, and typhoons, monsoons, and other buildings that generate strong winds and disasters.

  This seismic isolation structure is a suspended structure that converts ground vibration, which is velocity energy, into potential energy, and has a stilt type to protect residents from wind and flood damage.

  JP-A-11-270176   JP-A-13-142429   Windmill Basic Izumi Ushiyama Ohmsha   Strong motion observation network (K-NET, KIK-net)   Wikipedia Tornado,

  The conventional seismic isolation structure is provided at the lowest layer of the building and is defenseless against flooding. The present invention mitigates or prevents damage from floods, floods, debris flows, and tsunamis.

  In the present invention, the seismic isolation structure is installed at a height of 1.5 m or more from the basement or the ground surface where there is a risk of inundation, with little inundation damage.

  The present invention is a suspended seismic isolation structure that converts velocity energy of seismic motion into potential energy.

  The holding friction bolt prevents the vibration due to the wind speed of 15 m / s.

  In view of strong winds exceeding 15 m / s, we will provide seismic isolation bungee cords that incorporate elastic bodies.

  Prevents abnormal displacement with fail-safe anchors. This anchor incorporates a shock absorber to prevent impact.

  Make the foundation frame a raised floor.

Effect of the invention

  The present invention moves up and down by earthquake motion, but does not generate horizontal motion that damages human lives or household assets.

  By installing the seismic isolation bungee cord, it is possible to reduce the vertical movement of the floor frame during an earthquake and the horizontal movement during strong winds.

  During strong winds, it will sway due to wind pressure, but will be restored by its own weight.

  Reduce guerrilla rainfall, typhoon and other flood damage, debris flow, and tsunami damage, facilitate foundation inspection after inundation, and clean up sediment. It also facilitates daily inspection of seismic isolation devices and contributes to the health and safety of workers.

Is a schematic view of the whole. These are the relationship diagrams of the foundation frame [1], the suspension structure [2], the floor frame [3], the holding friction bolt [4], and the bungee cord [5]. These are explanatory drawings of the holding friction bolt [4]. These are explanatory drawings of bungee code [5]. These are explanatory drawings of fail safe anchor [6].

BEST MODE FOR CARRYING OUT THE INVENTION

The seismic velocity energy (F) becomes potential energy according to the following equation. m: Mass ν: Seismic velocity g: Gravitational acceleration

前項の位置エネルギーに鑑み、吊り材長さを６５ｃｍとし、ｈ_３００とｈ_２００の差分エネルギーは免震バンジーケーブルにより吸収する。The present invention is a suspended structure, and the period of a building is determined by the length of the suspended material.

In view of the preceding potential energy, the hanging member length and _65cm, differential energy _{h 300} and _{h 200} it is absorbed by the seismic isolation bungee cable.

Prevents shaking caused by winds with a wind speed of 15 m or less.
The energy F ₁₅ generated at a wind speed of 15m is

Preventing anomalous displacement Fail-safe anchors are usually in idler (standby) state, earthquake motion during the Great East Japan Earthquake, horizontal displacement due to 200-300 kine tremors, displacement due to abnormal periods, horizontal tornado winds exceeding expectations The displacement is held to 50 cm or less.

  A shock absorber is incorporated in the fail-safe anchor to prevent impact.

Effect of the invention

  The feature of the present invention is that the damage caused by water damage and debris flow is reduced by the stilt foundation frame, and recovery after damage and maintenance of the equipment are facilitated.

  Friction retainer bolts and seismic isolation bungee cords do not require external energy, and there is no worry of the function being stopped.

  Prevent fatal damage by failsafe anchors in unexpected earthquakes and tornadoes.

[1] Foundation frame [1a] Foundation frame column [1b] Foundation frame beam [2] Suspension structure [2a] Suspension material [2b] Receiving beam [2c] Bundling material [3] Floor frame [4] Holding friction bolt [4a ] High tension bolt [4b] Reinforcement plate [4c] Friction receiving plate [5] Seismic isolation bungee cord [6] Fail safe anchor [6a] Fail safe foundation pillar [6b] Anchor wire [6c] Shock absorber

Claims (3)

  The floor frame [3] is supported by the suspension material [2a], the receiving material [2b], and the bundle material [2c] from the high-floor type foundation frame [1], and the frictional force between the floor frame and the foundation frame is used. A suspension seismic isolation structure characterized by providing a friction bolt [4] for preventing shaking caused by wind force to reduce horizontal vibration.   The seismic isolation bungee cord [5] is installed between the foundation frame and the floor frame, and the idler (play, stand-by) state is set below 100 kanes. The suspension seismic isolation structure according to claim 1, wherein movement is mitigated.   Furthermore, in order to control the energy of the tornado F0 to tornado F2 (instant wind speed 69m) and to keep the displacement caused by the strong earthquake cycle within the legal range, the fail-safe anchor [6] is provided. The suspended seismic isolation structure.

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