Design Process of Deep Soil Mixed Walls for Excavation Support

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The use of deep soil mixing (DSM) technology for excavation support is growing in use across the world. In recent years, a number of projects in the United States have incorporated DSM for excavation walls. As deep soil mixing becomes a more economical alternative to traditional excavation support systems, determining which methods of design are most appropriate will become an important issue. Currently, standardized guidelines for design of DSM walls are not available. Case histories such as the Islais Creek Transport/Storage Project in San Francisco California can be used to illustrate the design process and steps that are unique to DSM excavation support. The focus of this paper is to present a case history to illustrate a design process for DSM walls.


deep soil mixing, excavations, beam-column method, finite element method

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