Effect of Void on Footing Behavior Under Eccentric and Inclined Loads

by M. C. Wang, Pennsylvania State Univ, United States,
C. S. Yoo, Pennsylvania State Univ, United States,
C. W. Hsieh, Pennsylvania State Univ, United States,

Document Type: Proceeding Paper

Part of: Foundation Engineering: Current Principles and Practices


The effect of underground void on the behavior of strip footings subjected to eccentric and inclined loads was investigated using the finite element method of analysis. Results of the analysis demonstrated that the bearing capacity of footings underlain by central circular voids decreases with increasing load eccentricity in a manner similar to that for footings without voids. However, the presence of voids reduces the extent of load eccentricity effect; and the degree of reduction is greater at smaller depth to void. Thus, the effect of void offsets the effect of load eccentricity, and the degree of offsetting depends on the level of load eccentricity and void conditions.

Subject Headings: Voids | Load bearing capacity | Finite element method | Footings | Eccentric loads | Soil strength | Soil analysis

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