Tubbing ring for lining a tunnel

US4812084A · kind A · utility

Assignee

• Ingenieure Mayreder, Kraus & Co. Baugesellschaft m.b.H. · AT

Inventors

• Harald Wagner · Verden, DE
• Alfred Schulter · Linz, AT

Key dates

• Filing date: Dec 17, 1987
• Grant date: Mar 14, 1989
• Expiry date: Dec 17, 2007

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21D11/08
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A tubbing ring for lining a tunnel comprises end faces lying in respective planes, which preferably include an acute angle with each other. The tubbing ring comprises an even number of tubbing blocks, which have abutting longitudinal side faces that have such an inclination to a line which is parallel to the longitudinal axis of the ring that the tubbing blocks constitute ring segments which are substantially trapezoidal in a view on a diametral plane. In order to provide a tubbing ring which is of the kind described first hereinbefore and in which the assembling of the individual blocks is simplified and can be performed with a higher accuracy than before, each block is formed with recesses in its longitudinal side faces in a portion which extends radially at the center of the length of the side face, and in its end faces and said recesses are adapted to receive coupling elements for a positive guidance of the next tubbing block to be inserted into the same tubbing ring and of a corresponding tubbing block of an adjacent tubbing ring to be assembled, each of said longitudinal side faces and of said end faces is preferably smooth in a major part of its area.