Nuclear Containment Mat Design Concepts

by King-Yuen Chu, (M.ASCE), Proj. Staff Engr.; Brown & Root, Inc., Houston, TX,
Alan A. Broussard, (A.M.ASCE), Struct. Engr.; Brown & Root, Inc., Houston, TX,

Serial Information: Journal of the Power Division, 1974, Vol. 100, Issue 1, Pg. 85-96

Document Type: Journal Paper


The design of the foundation mat for a reactor containment vessel must consider soil-structure interaction. The impact of this interaction on the mat thickness and reinforcing is a function of the relative stiffness of the mat and the supporting soil. A slab on Winkler foundations solution with consideration of mat uplift is used to evaluate the sensitivity of the foundation mat design to a range of soil spring constants. It is established that the mat bending moments and soil bearing pressures are the keys to determining the preliminary mat design; therefore, these are plotted versus mat thickness for a range of soil spring constants. These results are presented as working graphs that can be used for preliminary mat design for a range of soil stiffnesses.

Subject Headings: Foundation design | Mat foundations | Soil pressure | Materials engineering | Conceptual design | Thickness | Soil stabilization | Stiffening

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