ANALYSES OF INTERACTION BETWEEN TWO PAIRS OF SHIELD TUNNELS AND SOIL, AND THEIR APPLICATION TO DESIGN AND CONSTRUCTION OF PARALLEL SHIELD TUNNELS

Abstract

Since the planning and design stage of the construction of closely running four shield tunnels proposed in Kyoto city, authors have been engaged both in the study about various problems in the parallel shields and in the construction works with close monitoring by computerized construction systems for priority works, aiming for contributing to the influence evaluation of the ground-tunnels behavior in parallel shield tunnels in future.
The paper describes the evaluation and application of the followings; 1. the influence load to the preceding shield by the driving force of following shields, 2. characteristics in load changes in the long term effect of the parallel shields and 3. analytical illustration techniques about the ground behavior mechanism.