The Reduction Analysis of Bearing Capacity of the Footing Near Excavations in the Loess Area
DOI:
https://doi.org/10.54691/grw88762Keywords:
Loess; Excavation; The Foundation Bearing Capacity; Finite Element; Reduction Factor.Abstract
With the increasing development of urban underground space, the impact of foundation pit excavation on adjacent buildings has become a prominent issue. Based on extensive statistical parameters of loess regions and numerical simulations using Geo-Slope, this study analyzes the reduction pattern of the ultimate bearing capacity of adjacent strip foundations under unsupported excavation conditions. The research focuses on the influence of excavation depth (H), distance from the foundation to the pit edge (L), and building width (B) on the reduction of foundation bearing capacity (pu). A reduction factor (K) is introduced. The results show that pu gradually decreases with increasing H and B, and decreases with decreasing L. Moreover, K decreases as λ (λ=L/H) increases.
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