Deformation Behavior Analyses of Braced Excavation Considering Adjacent Structure by User-Defined Soil Models

This paper documents a study on deformation characteristics of a braced excavation, in which the excavation process was performed by zoned approach, with consideration of neighboring structure through the in-situ measurement and numerical analysis. The field observations indicate that the wall and ground displacement behavior induced by the zoned excavation approach is similar to those resulted from conventional excavation method as the measured values can be predicted properly by empirical methods based on the traditional excavation. In addition, the deviation between the building deformation and the greenfield ground settlement is examined by means of the settlement ratio between those two quantities. This ratio is found to vary within a small range. Furthermore, the excavation-induced building settlement is studied to examine the properness of a proposed building simulation method in the literature. Then, the effects of building properties including weight and rigidity on the building deformations are evaluated. Study on the obtained results provides a valuable insight regarding how to enhance the accuracy of building simulation in numerical analysis and what the excavation-induced building responses can be expected.

並列關鍵字

Numerical analysis ； braced excavation ； adjacent structure ； user-defined soil model ； excavation response

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