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Modified method of Prestressing Steel Trusses by inducing Lack of fit


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  • Product Description

Trusses are the most common steel structures generally adopted for railway bridges, industrial buildings etc. The quantity of steel used in these structures is very high. Increased quantity of steel increases the cost of the structure. In general, prestress involves the imposition of stresses opposite in sign to those which are caused by the subsequent application of the working loads. The technique of prestressing can be adapted to steel trusses by inducing lack of fit. This work aims at showing that an iterative procedure can identify the member and the amount of lack of fit in that member that results in reduced member forces in the truss. Methodology is illustrated with the help of a typical example. A truss subjected to an external load is analyzed for different magnitudes of lack of fit in each member. The case with minimum sum of compressive and tensile forces is identified so that the sum of the forces obtained due to external loads and the forces obtained after prestressing are less than the forces obtained due to external loads. Hence the corresponding cross sections required is also less comparatively there by resulting a considerable saving in steel quantity.

Product Specifications
SKU :COC57746
AuthorPonnada Markandeya Raju and Thonangi Raghuram Sandeep
Number of Pages168
Publishing Year2012-11-01T00:00:00.000
Edition1 st
Book TypeEnvironmental science, engineering & technology
Country of ManufactureIndia
Product BrandLAP LAMBERT Academic Publishing
Product Packaging InfoBox
In The Box1 Piece
Product First Available On ClickOnCare.com2015-06-08 00:00:00