This report is a state-of-the-art assessment of foundation engineering for trans¬mission line structures, with particular emphasis on uplift/compression foundation design loads. The scope of this report is broad and includes many aspects of geo-technical, foundation and structural engineering. After presenting the basic analysis/design philosophy, strategies for site characterization are described. Procedures for site reconnaissance, field exploration and laboratory testing follow. Detailed methodologies are given to evaluate the compression and uplift capa¬cities of foundations in soil, including procedures to predict foundation move¬ments. Evaluation of foundations in rock and anchors follows. Load test proce¬dures and methods to evaluate load test results are described, with illustrations that confirm the design methodologies. The response of transmission line struc¬tures to differential foundation movements is presented with examples, and an Il-lustration is given of total structure response to foundation movements.
展开▼
