TITLE:
Deep Foundation Pit Excavations Adjacent to Disconnected Piled Rafts: A Review on Risk Control Practice
AUTHORS:
Bantayehu Uba Uge, Yuancheng Guo
KEYWORDS:
Deep Foundation Pit Excavation, Disconnected Piled Raft Foundation, Risk Control, Observational Method
JOURNAL NAME:
Open Journal of Civil Engineering,
Vol.10 No.3,
September
24,
2020
ABSTRACT: Foundation
pit excavation engineering is an old subject full of decision making. Yet, it
still deserves further research due to the associated high failure cost and the
complexity of the geological conditions and/or the surrounding existing
infrastructure around it. This article overviews the risk control practice of
foundation pit excavation projects in close proximity to existing disconnected piled raft. More focus is
given to geotechnical aspects. The review begins with achievements to ensure
excavation performance requirements, and
follows to discuss the complex soil structure interaction involved among the fundamental components: the
retaining wall, mat, piles, cushion, and the soil. After bringing consensus
points to practicing engineers and decision
makers, it then suggests possible future research directions.