Assessment of Superposition as a Design Framework for the Combined Effects of Soil Improvement and Foundation Remediation

helical piers;micropiers;capacity enhancement;small-scale;1-g testing;piled foundations;sand

Manke, Jonathan Peter ; Dr. M S Rahman, Committee Member,Dr. Debra Laefer, Committee Chair,Dr. Roy Borden, Committee Member,Manke, Jonathan Peter ; Dr. M S Rahman ; Committee Member ; Dr. Debra Laefer ; Committee Chair ; Dr. Roy Borden ; Committee Member

University:North Carolina State University

关键词: helical piers;    micropiers;    capacity enhancement;    small-scale;    1-g testing;    piled foundations;    sand;   

Others  :  https://repository.lib.ncsu.edu/bitstream/handle/1840.16/2273/etd.pdf?sequence=1&isAllowed=y

美国|英语

来源: null

【 摘 要 】

The problem of pile foundation reuse provides an ideal opportunity to evaluate the validity of superposition as a design paradigm for ground intervention and ground reinforcement (GIGR) techniques when used in combination with in situ foundations.Grouted, helical piers, a relatively new technology, are proposed as a capacity improvement option for existing pile foundations.The relationship between these geotechnical elements was evaluated through the axial and lateral testing of small-scale, cast-in-place foundations in uniform, dry sand.These tests showed that the implementation of ground modification techniques caused an increase in the axial and lateral load-deflection performance of the foundation, with superposition as the most probable design methodology.