Escavações e Estruturas de Suporte

Objectives

To familiarize students with the theories and methods that govern the conception, design, construction and monitoring of retaining structures, natural slopes and slopes that result from excavation. Supplement the basic knowledge of geotecnics gained in other courses, incorporate concepts acquired in other engineering subjects and apply them to the design these structures

Syllabus

Slopes in rock and soil masses. Slope stability analysis. Limit equilibrium method. Planar, circular and composed slip surfaces. Method of slices. Method of wedges. Stability charts. Strength parameters. Pore water pressure regime. Back analysis of slopes. Slope remediation works: conception and design. Importance of drainage. Nailing and nailed slopes. Reinforced earth. Concept of a flexible retaining structure. Soil-structure interaction. Arch effect. Actions: earth pressures, water pressures and surcharges. Cantilever, single support, multi propped and multi anchored walls. Conception, design and safety verification of solutions. Construction solutions: sheet piles walls, piled walls, diaphragm walls, ?berlin? walls. Shafts. Stability of the excavation base. Vertical stability of anchored walls. Global stability. Anchors. Movements associated with excavations. Temporary works. Importance of the construction sequence. Instrumentation and monitoring. Case studies.

Prerequisites

Attendance of the CU Modelling of Geotechnical Structures

Cross Competence Component

The CU allows the development of transversal competences on Critical Thinking, namely strategic thinking and problem solving approaches, within the practical works and oral presentations; Interpersonal and Intrapersonal Skills (oral, organizational and teamwork, self-discipline, perseverance, self-motivation skills - within the practical works and oral presentations); and Information and Media Literacy (ability to locate and access information, as well as to analyze and evaluate media content - within the practical works and oral presentations). The assessment percentage associated with these competences should be around 20%.

Ethical Principles

All members of a group are responsible for the group's work. In any assessment, every students shall honestly disclose any help received and sources used. In an oral assessment, every students shall be able to present and answer questions about the entire assignment and solution.