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基本説明
Provides the practicing engineer with a summary of the state-of-the art knowledge of expansive soils and practical solutions based upon the author's experience.
Full Description
Since the first edition of Foundations on Expansive Soils appeared in 1975, considerable advancements have been made in this field. While most of the research has been concentrated in the area of heave prediction, identification of swelling soil and soil suction, studies on unsaturated soil, finite element analysis and stress modeling have also commanded a great deal of attention. More and more nations are becoming aware of the damage caused by expansive soils and it could be said that more than half the world is affected by swelling soils. As a consulting geotechnical engineer, the author has seen little advancement in the practical application of theoretical approaches towards solving engineering problems. Both geotechnical engineers and structural engineers adhere to the initial concept that by isolating water, the problem can be resolved. Unfortunately, more and more structural failure has been reported. This book provides the practicing engineer with a summary of the state-of-the art knowledge of expansive soils and practical solutions based upon the author's experience.
Contents
Part I. Theory and Practice. 1. Nature of expansive soils. Introduction. Origin of expansive soils. Distribution of expansive soils. Damage caused by expansive soils. Clay minerals. Recognition of expansive soils. Physical properties of expansive soils. 2. Mechanics of swelling. Introduction. Moisture migration. Swelling potential. Swelling pressure. Mechanics of swelling pressure. Lateral pressure. Shrinkage. 3. Field and laboratory investigation. Introduction. Site investigation. Drilling and sampling. Laboratory testing. 4. Drilled pier foundation. Introduction. Pier capacity. Mechanics of pier uplift. Belled piers. Friction piers. Failure of the pier system. State-of-art design. 5. Footing foundations. Introduction. Continuous footings. Pad foundations. Footings on selected fill. Mat foundation. Tunnel foundation. 6. Slabs on expansive soils. Introduction. Slab-on-ground. Stiffened slabs. Floating slabs. 7. Moisture control. Introduction. Horizontal moisture barriers. Vertical moisture barriers. Subsurface drainage. Peripheral drains. Surface drainage. 8. Soil stabilization. Introduction. Prewetting. Compaction control. Soil replacement. Lime stabilization. Chemical stabilization. Miscellaneous structure. 9. Soil suction. Introduction. What is soil suction? Measurement of suction. The application of soil suction in geotechnical practice. 10. Investigation of foundation movement. Introduction. History. Distress study. Investigation. Cause of movement. Remedial construction. Legal aspect. Part II. Case Studies. I. Distress caused by pier uplift. General. History. Investigation. Cause of movement. Remedial construction. II. Distress caused by improper pier design and construction. General. Existing condition. Cause of movement. Remedial measures. III. Distress caused by heaving of footing pad and floor slab. General. History. Distress. Investigation. Treatment. Remedial construction. IV. Distress caused by heaving of continuous footings. General. History. Subsoil condition. Cause of movement. Remedial measures. V. Distress caused by rise of water table. General. History. Subsoil conditions. Water table. Cause of movement. Source of moisture. Evaluation of building conditions. Remedial measures. VI. An anatomy of a lawsuit. General procedure for geotechnical investigation. Abstract from preliminary soil report. Abstract from geotechnical report. Distress and publicity. Summons. Response. Expert testimony. Damage to the profession. Appendices. A. Standard test methods for one-dimensional swell or settlement potential of cohesive soils. B. Conversion factors. Subject index. Author index.
