Underpinning of Distressed Foundations, an engineering paper prepared for AREMA by the Prasads (father and daughter, the former a New York University Ph.D. candidate and MTA New York City Transit employee; the latter an NYU undergraduate), discusses the basic concept of underpinning of distressed foundations: “In general, underpinning is the method of providing additional strength to the foundation of an existing building and/or its associated infrastructure. This can be achieved by providing additional depth or increasing the soil’s bearing capacity by adding suitable supports to existing foundations. Underpinning is a repair/rehabilitation process that strengthens existing deteriorated foundations. Its main intent is to hold the structure without structural failure and differential/total settlement that would be detrimental to the structure’s integrity and function. The right underpinning method should be decided upon only after understanding the foundation structure and support, and factors responsible for foundation damage. In this paper, many types of underpinning are reviewed, and methods of analysis are presented under a variety of soil and foundation conditions. This paper also covers underpinning distressed foundations of railroads, railroad bridge piers, and abutments.” Download Underpinning of Distressed Foundations: Prasad_Underpinning-of-Foundation_AREMA-2020-ConferenceDownload The post ‘Underpinning of Distressed Foundations’ appeared first on Railway Age. Continue reading...
