Civil Engineering Association

Structural bearings and expansion joints for bridges

Structural Bearings and Expansion Joints for Bridges
Günter Ramberger; Professor, Technical University, Vienna, Austria

89 pages and 131 illustrations, in English
Format: 170 x 240 mm
ISBN 3857481056
Published: May 2002

This book is aimed at both students and practicing engineers, working in the field of bridge design, construction, analysis, inspection maintenance and repair.

Contents
Bridge superstructures have to be designed to permit thermal and live load strains to occur without unintended restraints. Bridge bearings have to transfer forces from the superstructure to the substructure, allowing all movements in directions defined by the designer. The two functions - transfer the loads and allow movements only in the required directions for a long service time with little maintenance - are not so easy to fulfill. Different bearings for different purposes and requirements have been developed so, that the bridge designer can choose the most suitable bearing.

By the movement of a bridge, gaps are necessary between superstructure and substructure. Expansion joints fill the gaps, allowing traffic loads to be carried and allowing all expected displacements with low resistance. Expansion joints should provide a smooth transition, avoid noise emission as far as possible and withstand all mechanical actions and chemical attacks (de-icing) for a long time. A simple exchange of all wearing parts and of the entire expansion joint should be possible.

The present volume provides a comprehensive survey of arrangement, construction and installation of bearings and expansion joints for bridges including calculation of bearing reactions and movements, analysis and design, inspection and maintenance. A long list of references deals with the subjects but also with aspects in the vicinity of bearings and expansion joints.

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regards

Grunf

kowheng

arshiakh