Subproject B1

Optimized Structural Segments for Durable and Robust Tunnel Lining Systems


Overview

Following two complementary approaches the subproject intends to develop hybrid concrete lining segments regarding aspects of safety, durability and robustness. Particularly of interest are: a) a multi-level optimization-based design concept, subsequent robustness analyses and subsidiary experiments as well as b) the manufacturing process and the development of suitable precast systems with applicable joint and material concepts. Thus obtained small-sized and tailor-cut built-in components acc. to a "fresh on solid" or "fresh in fresh" concreting concept for a monolithic production process are investigated and tested experimentally.

  • Overview
  • Publications
  • Scientists
  • Detailed Description
Multi-Level approach ( building / component / material) (top), topology optimization results (bottom left) and experimental results of hybrid test specimen(bottom right)


Various geometrical profiles of the bonding zone (pyramid, truncated pyramid, plane) (left) and shear load - displacement response of hybrid samples and corresponding fracture patterns (right)


Optimization results considering various eccentricities (left) with corresponding reinforcement designs (center) and cracking patterns for specimen with conventional and hybrid reinforcement concepts (right)