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原文传递 Determination of Interaction between Bridge Concrete Approach Slab and Embankment Settlement. Final rept.

题名：	Determination of Interaction between Bridge Concrete Approach Slab and Embankment Settlement. Final rept.
作者：	CAI, C. S.; SHI, X.; VOYIADJIS, G. Z.
关键词：	Concrete-slabs; Embankments-.;Louisiana-; Bridge-abutments; Soil-mechanics; Finite-element-analysis; Expansion-joints; Reinforcement-Structures.
摘要：	Soil embankment settlement causes concrete approach slabs of bridges to lose their contacts and supports from the soil. When soil settlement occurs, the slab will bend in a concave manner that causes a sudden change in slope grade near its ends. Meanwhile, loads on the slab will also redistribute to the ends of the slab, which may result in faulting across the roadway at the pavement end of the approach slab. Eventually, the rideability of the bridge approach slab will deteriorate. State Departments of Transportation (DOTs) are spending millions of dollars each year to deal with problems near the ends of approach slabs. The main objective of this research is to correlate the deformation and internal force of the approach slab with the approach embankment settlements and the approach slab parameters such as length and thickness. This correlation will be used to evaluate the effectiveness of approach slabs and develop guidelines for their structural design. This information will also help determine when settlement controls are necessary.
报告类型：	科技报告