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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Mat Foundation and its Interaction with the Superstructure
Author(s): P. V. Banavalkar
Publication: Special Publication
Appears on pages(s): 13-50
Keywords: creep properties; frames; mat foundations; soil mechanics; settlement (structural); soil stabilization; stiffness; superstructures; Structural Research
Abstract:Over the years, methods of analysis, design, and construction for structures have gone through major modifications; however, the use of mat foundations to support building loads is ancient and very well documented. The mat foundation is a result of merging individual spread footings which support column loads and rest on soil strata, piles, or piers. The size of the mat foundation partially or fully covers the footprint of the tower structure and usually extends well beyond its footprint. The bearing strata of a mat foundation is determined by the allowable soil bearing capacity, the mat performance in terms of its settlement, and its impact on the structural behavior of the superstructure. This paper discusses the analysis of a soil-supported mat foundation with emphasis on the variation of both structural members and soil properties as they impact design. The different parameters considered in this study are structural property of concrete mat; variation of modulus of subgrade reaction, both in spatial and time domain; and variation in the loading pattern imposed on the mat. An interaction between a realistic superstructure having a perimeter tubular structural frame and a corresponding mat foundation is investigated for different parametric values, such as the stiffness of structural frame and soil properties.
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