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K. Kiss, L. Dunai, "Stress History Generation for Truss Bridges using Multi-Level Models", in B.H.V. Topping, (Editor), "Advances in Civil and Structural Engineering Computing for Practice", Civil-Comp Press, Edinburgh, UK, pp 221-229, 1998. doi:10.4203/ccp.56.6.2

Abstract

A technique is described for automatic computation of numerical stress histories in steel truss railway bridges, caused by the passage of pre-defined trains. The 3-D frame of the bridge is combined with FEM plate/shell sub-models of selected details. The effects of joint rigidity and interaction of structural elements are taken into account by the global model. Joint geometry is introduced by local sub-models. Connection nodes in the global beam model correspond to the end cross-section centroids of the sub-model. Their displacements are interpreted as imposed deformations on the submodels.

The load cases for the global model simulate the passage of two vertical unit forces along the stringers. The load cases for the sub-model are unit imposed deformations. Combining these, and applying train loads, numerical stress histories are obtained. The method is illustrated by test load results of an existing railway bridge.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 56 ADVANCES IN CIVIL AND STRUCTURAL ENGINEERING COMPUTING FOR PRACTICE Edited by: B.H.V. Topping Paper VI.2 Stress History Generation for Truss Bridges using Multi-Level Models K. Kiss and L. Dunai Department of Steel Structures,Technical University of Budapest, Hungary doi:10.4203/ccp.56.6.2 purchase the full-text of this paper Full Bibliographic Reference for this paper K. Kiss, L. Dunai, "Stress History Generation for Truss Bridges using Multi-Level Models", in B.H.V. Topping, (Editor), "Advances in Civil and Structural Engineering Computing for Practice", Civil-Comp Press, Edinburgh, UK, pp 221-229, 1998. doi:10.4203/ccp.56.6.2 Abstract A technique is described for automatic computation of numerical stress histories in steel truss railway bridges, caused by the passage of pre-defined trains. The 3-D frame of the bridge is combined with FEM plate/shell sub-models of selected details. The effects of joint rigidity and interaction of structural elements are taken into account by the global model. Joint geometry is introduced by local sub-models. Connection nodes in the global beam model correspond to the end cross-section centroids of the sub-model. Their displacements are interpreted as imposed deformations on the submodels. The load cases for the global model simulate the passage of two vertical unit forces along the stringers. The load cases for the sub-model are unit imposed deformations. Combining these, and applying train loads, numerical stress histories are obtained. The method is illustrated by test load results of an existing railway bridge. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £95 +P&P)
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