VIBRATION ISOLATION SEPARATOR

PROBLEM TO BE SOLVED: To provide a vibration isolation separator allowing for favorable construction of a concrete wall that prevents transmission of vibration from an underground wall side that is an earth retaining wall side to a formwork side.SOLUTION: The vibration isolation separator is provided that maintains a distance between a buffer layer 32 installed as an accessory element in an underground wall 30 and a formwork 40. The separator has a first plate-like part 111 and a second plate-like part 112, which are separated from each other in a separation direction of the buffer layer 32 and the formwork 40 and face to each other. An end 48b of a formwork side bolt 48 is fixed to the second plate-like part 112. An elastic body 130 is disposed between the first plate-like part 111 and the second plate-like part 112. The elastic body 130 is fixed to an end 35a of an underground wall side bolt 35 inserted in a hole part 111a formed on the first plate-like part 111 and engages with the first plate-like part 111. The elastic body 130 deforms following an outer shape of the elastic body 130 between the first plate-like part 111 and the second plate-like part 112 and is covered with a protection cap part 140 that is tightly attached to an outer circumferential surface 1341.SELECTED DRAWING: Figure 5 【課題】土留壁である地中壁側から型枠側への振動の伝達を防止したコンクリート壁を好適に施工できる防振セパレーターを提供する。【解決手段】地中壁３０に添設した緩衝層３２と型枠４０との間隔を保持する防振セパレーターである。緩衝層３２と型枠４０の離間方向で離間して対向する第１板状部１１１及び第２板状部１１２を有する。第２板状部１１２には型枠側ボルト４８の端部４８ｂが固定され、第１板状部１１１及び第２板状部１１２間には弾性体１３０が配置されている。弾性体１３０は、第１板状部１１１に形成された孔部１１１ａを挿通する地中壁側ボルト３５の端部３５ａに固定され、第１板状部１１１に係合する。弾性体１３０は、第１板状部１１１及び第２板状部１１２の間で、弾性体１３０の外形に追従して変形し、外周面１３４１に密着する保護キャップ部１４０により覆われている。【選択図】図５