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A platform for research: civil engineering, architecture and urbanism
Hybrid Method for Predicting the Response of a Pile-Raft Foundation to Adjacent Braced Excavation
With the increasing development of underground spaces in cities, a critical indicator for the design of excavation in urban areas is controlling the damage potential of adjacent buildings. Unfortunately, the design of excavations in built-up areas is very challenging because no analysis method has been developed for predicting the influence of excavation on adjacent pile-supported buildings. In this study, the small-strain-based empirical method was adopted for calculating the free-field soil movement induced by braced excavation, and a two-step method was developed to calculate the pile-raft response to braced excavation based on solutions for layered materials. Both the vertical and horizontal responses of the pile-raft foundation are considered. The proposed method was validated through a comparison of its results with those from model tests, the finite-element method, and existing methods in the literature. The proposed method could provide acceptable results of the horizontal and double-directional response of a pile-raft foundation induced by excavation in homogeneous and layered soil. Therefore, it can be used for estimating potential damage from excavation to adjacent buildings.
Hybrid Method for Predicting the Response of a Pile-Raft Foundation to Adjacent Braced Excavation
With the increasing development of underground spaces in cities, a critical indicator for the design of excavation in urban areas is controlling the damage potential of adjacent buildings. Unfortunately, the design of excavations in built-up areas is very challenging because no analysis method has been developed for predicting the influence of excavation on adjacent pile-supported buildings. In this study, the small-strain-based empirical method was adopted for calculating the free-field soil movement induced by braced excavation, and a two-step method was developed to calculate the pile-raft response to braced excavation based on solutions for layered materials. Both the vertical and horizontal responses of the pile-raft foundation are considered. The proposed method was validated through a comparison of its results with those from model tests, the finite-element method, and existing methods in the literature. The proposed method could provide acceptable results of the horizontal and double-directional response of a pile-raft foundation induced by excavation in homogeneous and layered soil. Therefore, it can be used for estimating potential damage from excavation to adjacent buildings.
Hybrid Method for Predicting the Response of a Pile-Raft Foundation to Adjacent Braced Excavation
Mu, Linlong (author) / Chen, Wei (author) / Huang, Maosong (author) / Lu, Qi (author)
2020-02-04
Article (Journal)
Electronic Resource
Unknown
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