Bearing capacity of free-rotating and restrained footings near slopes

Ching Chuan Huang, Yue Wen Chen

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Loading tests on model horizontal grounds and slopes are performed using a 100-mm-wide strip footing with restrained and free-rotation conditions. Test results reveal that complete restraint against rotations on the footing generates larger values of ultimate bearing capacity and deeper failure surfaces than those for footings with a free-rotation condition. This is true for horizontal and slanted grounds with various slope angles. Test results also reveal that for a vertically loaded footing, a major factor that influences the ultimate bearing capacity of the footing (q u ) is the load eccentricity (e c ) at the footing base. The influence of load inclination on the values of q u for free-rotating and fixed footings is minor because the load inclination angles measured during the loading tests were negligibly small. In the case of a footing placed on a slanted ground, a load eccentric toward the heel of the footing is associated with a larger value of q u than that for a load eccentric toward the toe of the footing when subjected to similar extents of load eccentricity. This observation suggests that the currently used formula for correcting load eccentricity (e c ) has to be updated in order to address the issue of increased q u induced by a load eccentricity toward the heel of the footing.

Original languageEnglish
Pages (from-to)1-10
Number of pages10
JournalJournal of GeoEngineering
Volume14
Issue number1
DOIs
Publication statusPublished - 2019 Jan 1

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology

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