EARTH ANCHOR AND FIXING THEREOF

• Main Authors: WATABE TERUYA, MORIMOTO TOSHIYUKI, HIRAISHI GOICHI, ARIYAMA MINEO, NEMOTO HISASHI, FUJITA MASAKAZU, HIRANO SAKAE, SATO HIROYUKI, TAKEUCHI YOSHIO, YUTANI TAKAO, SUGA KOICHI, YAMAMOTO KAZUHIRO, HAMAZUKA SEIJI
• Format: Patent
• Language: English
• Published: 10.08.1993
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

PURPOSE:To sufficiently secure the covering thickness of grout by a method in which linked centralizers are set on the front and rear ends of earth anchor and projected outwards in an excavated skew pit to centrally position the earth anchor. CONSTITUTION:A tip centralizer 2 and an intermediate centralizer 3 are each attached to the tip cap 5 of a tension member 1 and an attached steel tube 6. The centralizers 2 and 3 are each made up of a link device projected outwards by spring and a stopper to hold the projected position. A cylindrical casing is inserted into an excavated skew pit and the centralizers 2 and 3 in contracted state are inserted into the casing. The casing drawn out to expand the centralizers 2 and 3 in order to position the tension member at the center of the pit. During the period, a grout is injected to form an anchor 4, and after the grout hardens, the head of the tension member 1 is tensed by jacks to fix it. The sufficient covering thickness of the grout in the skew pit can thus be secured.