ANCHOR INSTALLATION STRUCTURE

• Main Authors: TAKAMURO KAZUTOSHI, NOMURA NOBUO, KUBOTA YOICHI
• Format: Patent
• Language: English; Japanese
• Published: 18.03.2021
• Subjects: ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTIONOF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, ORTHE LIKE; BLASTING; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING; EMBANKMENTS; ENGINEERING ELEMENTS AND UNITS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HYDRAULIC ENGINEERING; LIGHTING; MECHANICAL ENGINEERING; SOIL SHIFTING; THERMAL INSULATION IN GENERAL; UNDERGROUND OR UNDERWATER STRUCTURES; WEAPONS

To provide an anchor installation structure which can obtain a fixing force with essential and sufficient installation strength in normal usage, and can prevent breakage of a fragile base material where an anchor is installed and in which a repair/recovery work at breakage can be carried out with less labor even when an impact force is applied.SOLUTION: An anchor installation structure installs, in a fragile base material 100, an anchor 1 constituted of: an exterior body 2 formed with a female screw portion 21 at its inner periphery; and a breakage inducing bolt 3 formed with a male screw portion 33 screwed with the female screw portion 21 of the exterior body 2 on its outer periphery. The exterior body 2 is stored in a bottomed hole 110 formed in the fragile base material 100. The male screw portion 33 of the breakage inducing bolt 3 is screwed with the female screw portion 21 of the exterior body 2, to fix the breakage inducing bolt 3 to the fragile base material 100. At a predetermined position in a bolt axis direction in a protruding part of the breakage inducing bolt 3 which protrudes from a surface of the fragile base material 100, there is provided a breakage inducing portion 34 with strength at least lower than that of the male screw portion 33 screwed with the exterior body 2.SELECTED DRAWING: Figure 5 【課題】通常の使用時には必要十分な設置強度の定着力を得ることができると共に、万一衝撃力が加わったときにアンカーが設置されている脆弱母材の破壊を防止でき、破損時の修理・復旧作業を少ない労力で行うことができる。【解決手段】内周に雌ねじ部２１が形成された外装体２と、外装体２の雌ねじ部２１に螺合される雄ねじ部３３が外周に形成された破断誘発ボルト３から構成されるアンカー１を脆弱母材１００に設置するアンカー設置構造であり、脆弱母材１００に形成された有底穴１１０に外装体２が収容され、破断誘発ボルト３の雄ねじ部３３が外装体２の雌ねじ部２１に螺合されて破断誘発ボルト３が脆弱母材１００に定着されていると共に、脆弱母材１００の表面から突出する破断誘発ボルト３の突出部分におけるボルト軸方向の所定位置に、少なくとも外装体２へ螺合する雄ねじ部３３よりも強度が低い破断誘発部３４が設けられる。【選択図】図５