ASEISMIC BASE ISOLATION PULL BOX

To provide an aseismic base isolation pull box allowing protection of a distribution cable by preventing cable exposure and load on the distribution cable caused by vibration upon an earthquake and like to be absorbed.SOLUTION: An aseismic base isolation pull box 1 is configured to oppositely arrang...

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Main Authors HAYASHI YUSUKE, FUKUDA SATORU, TANAKA FUMIAKI, MIYOSHI TAKAYUKI, ONNAI SHIGEHIRO, ABE KIRIKO, MATSUURA HIROMI
Format Patent
LanguageEnglish
Japanese
Published 24.06.2021
Subjects
BUILDING
BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
EMBANKMENTS
EXCAVATIONS
FENCING
FIXED CONSTRUCTIONS
FOUNDATIONS
GENERATION
HYDRAULIC ENGINEERING
INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINEDOPTICAL AND ELECTRIC CABLES OR LINES
MASTS
SOIL SHIFTING
SWIMMING OR SPLASH BATHS OR POOLS
TENTS OR CANOPIES, IN GENERAL
UNDERGROUND OR UNDERWATER STRUCTURES
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Summary:To provide an aseismic base isolation pull box allowing protection of a distribution cable by preventing cable exposure and load on the distribution cable caused by vibration upon an earthquake and like to be absorbed.SOLUTION: An aseismic base isolation pull box 1 is configured to oppositely arrange a lower box 2 secured on the ground G through a base isolation layer 5 and having a first hole part through which a distribution cable 19 is inserted, and an upper box 3 secured on a base part 11 of a building 10, arranged opposite to the lower box 2 and having a second hole part through which the distribution cable 19 is inserted. A first pipe body 18 is connected to the first hole part, and a second pipe body 22 is connected to the second hole part, and the distribution cable 19 is inserted in the first pipe body 18, the second pipe body 22, and the aseismic base isolation pull box 1. The distribution cable 19 with a coiled extra part is accommodated in an inner space formed by the lower box 2 and the upper box 3, and the lower box 2 and the upper box 3 relatively vibrate in a horizontal direction to positionally deviate at the time of an earthquake.SELECTED DRAWING: Figure 3 【課題】配線ケーブルの外部への露出を防いで保護できる上に、地震等の際にも振動によって配線ケーブルにかかる負荷を吸収できる。【解決手段】免震プルボックス１は、地盤Ｇ上に免震層５を介して固定され配線ケーブル１９を挿通させる第一穴部を有する下部ボックス２と、建物１０の基部１１に固定され且つ下部ボックス２に対向して配設されていて配線ケーブル１９を挿通させる第二穴部を有する上部ボックス３と、を対向して配設した。第一穴部には第一管体１８が、第二穴部には第二管体２２が接続されており、第一管体１８及び第二管体２２と免震プルボックス１内に配線ケーブル１９が挿通されている。下部ボックス２及び上部ボックス３で形成する内部空間内に配線ケーブル１９がとぐろを巻いた余長部を有して収納され、地震時に下部ボックス２及び上部ボックス３は水平方向に相対的に振動して位置ずれする。【選択図】図３
Bibliography:Application Number: JP20190226335