Computation & Study On The Deflection Of The Braced Structure And Its Affection Factors In Excavation Of Soft Soil

AbstractIt's a valuable problem in foundation pit of soft soil to study its lateral wall deflection and the surface settlement behind the retain wall. This paper introduces the current general situation on that question and describes the principle difficult in engineering practices which needs helps from researchers. After analyzing a serial of samples by FEM, studying their calculated and practical data, this article gives a typical distribution curve of the surface settlement behind the retain wall. Using this curve, the surface settlement can be calculated through the lateral wall deflection, which can be gotten by elastic reactance method . The paper also examines the influence of a number of factors which affecting the deflections of foundation pits, such as the wall stiffness, prestressed technology, soil consolidation technology, and get some useable conclusions.