TENSIONLESS PIER FOUNDATION

摘要

A hollow, cylindrical pier foundation (10) is constructed of cementitious material (68) poured in situ between inner (12) and outer (14) corrugated metal pipe shells. The foundation is formed within a ground pit (16) and externally and internally back filled. The lower end of the foundation has a circumferential ring (22) fully embedded therein and sets of inner (20) and outer (21) circumferentially spaced bolts have their lower ends anchored to the anchor ring, their upper ends projecting up outwardly of the top of the foundation and a majority of the midportions thereof free of connection with the cementitious material of which the foundation is constructed. The base flange (80) of a tubular tower (74) is positioned downwardly upon the upper end of the foundation with the upper ends of the inner and outer sets of bol ts projecting upwardly through holes (76, 78) provided therefor in the base flange.