The Deflection of Earth Retaining Diaphragm wall during Deep Excavation

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The Deflection of Earth Retaining Diaphragm wall during Deep Excavation

Author: Chin Der Ou | Size: 350 KB | Format: PDF | Quality: Scanner | Publisher: Conference on Soil & Foundation | Year: 1981 | pages: 7

Abstract :

The technique of constructing reinforced concrete diaphragm wall together with internal bracing or tie back system in deep excavation has been practiced for many years. It has become on of the most popular earth retaining schemes for deep excavation nowadays, yet the analytical methods on the lateral displacement and deflection of the diaphragm wall are still in vague and a sort of art.

This report describes a simple spring model method to predict the lateral displacement and deflection of the diaphragm wall in according to sequence of excavation. A scheme of selecting proper soil strength parameters and earth pressure diagram as well as determination on the soil spring constants is introduced.

Direct measurements on the lateral movement of the diaphragm wall has been carried out in site during deep excavation. The results demonstrated that the prediction for lateral movement of the diaphragm wall by the spring model method has a reasonably fail accuracy.

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