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Durability of Bridge Expansion Joints with Perforated Dowels Under traffic impact loading

Transactions of Tianjin University 2006年第B09期12卷 42-45页

作者： YODA Teruhiko YOSHIDA Tetsuya SETA Makoto Department of Civil and Environmental Engineering Waseda UniversityTokyo 169-8555Japan Kyouryou Maintenance Co.Ltd Tokyo 115-0055Japan

In design phases, expansion joints are required to have movement capacity, bearing capacity for static and dynamic loading, watertight, low noise emission and traffic safety. On the basis of the fact that failure due to dynamic loading is the main reason for the observed damages, attention is focused on the bearing capacity for dynamic loading governed by impact, because it differs from the static loading. In this study, from the viewpoint of durability, experimental studies for dynamic behavior were conducted for aluminium alloy expansion joints with perforated dowels. The validity of the perforated dowels against traffic impact loading was confirmed by both experimental and numerical studies.

关键词： bridge expansion joints traffic impact loading durability aluminium alloy

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Design of Bridge Expansion Joints with Perforated Dowels Under impact loading

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Transactions of Tianjin University 2008年第5期14卷 340-343页

作者： YODA Teruhiko AYASHI Mamiko Department of Civil and Environmental Engineering Waseda University

The expansion joints are expected to have movement capacity, bearing capacity for static and dynamic loading, water-tightness, low noise emission and traffic safety. In particular, the failure due to impact loading is the main reason for the observed damages. The problem of dynamic behavior of the expansion joints is so complex that we shall focus our attention on the impact factor for vehicle load that is governed by traffic impact. In order to overcome this difficulty, the cantilever-toothed aluminum joint (finger joint) is one of the promising joints under impact loading. In this study, from the viewpoint of design methodology, numerical studies for impact behavior were conducted for aluminum alloy expansion joints with perforated dowels. The design impact factor for the expansion joints with the perforated dowels against traffic impact loading was examined by using numerical simulations.

关键词： bridge expansion joints traffic impact loading perforated dowel

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