SoilStructure Interaction of Buried Structures（SoilStructure埋结构的相互作用）.pdfVIP

A2K04: Committee on Subsurface Soil-Structure Interaction Chairman: Thomas C. Sandford Soil-Structure Interaction of Buried Structures THOMAS C. SANDFORD, University of Maine The analysis, design, and performance of buried structures associated with transportation facilities, such as buried culverts, grade crossings, and soil-structure systems, requires an understanding of soil-structure interaction. Buried structures usually cannot resist the loads to which they are subjected, including soil, without utilizing the strength of the surrounding soil in a complex interaction. The soil-structure interaction of a buried structure is affected by the structure’s material, size, and stiffness; by the method of construction in the field (e.g., trench, embankment, or tunnel); by the type and placement of the backfill material; and by the external loading. TRENDS AFFECTING SUBSURFACE SOIL-STRUCTURE INTERACTION During the past few years, a number of trends have led to changes in the designs for buried structures. In the coming decade, the following trends are expected to result in further changes to buried structures: Rehabilitation of existing structures will become a more important aspect of work associated with buried structures. New or improved materials will continue to be developed for structures and for backfill. The weight of vehicles on highways will increase. Environmental restraints and limitations on public disruption will continue to affect construction. Some resources, such as high-quality fill, will become less available and thus more costly in some locations. Computational power will increase, and new computers will cost less than the computers of today. Reliability-based design will emerge as the use of load and resistance factor design (LRFD) increases. Property-monitoring equipment will improve in cost and ease of use. Research into problems and un