| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.17 ( October 1987 ) ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Aluminum-Alloy Maintenance Trolleys for the Super-Long Bridge Shin-ichi Endo, Atsushi Shiga, Eitatsu Yamamoto, Kanji Fukushima |
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Synopsis : The design of the aluminum-alloy-made maintenance trollies, which was to be equipped to the Bannosu-Bridge as a part of the Kojima-Sakaide route linking Honsyu and Shikoku Island of Japan, was started taking into consideration the characteristics of the aluminum-alloy materials such as the galvanic corrosion problem between different materials - aluminum alloy for structural parts and steel for mechanical parts - and the welding procedure of the aluminum-alloy structure which posed most important problems. As the trollies were to be operated under the limited spaces of bridge girders, the compact size and the maintenance-free operation were emphasized in designing. For welding of the aluminum alloy, a fundamental experiment with a structure model, was carried out before starting of manufacture. Based upon the data obtained, control standards and circumstantial conditions for welding settled, and the manufacturing process of the aluminum-alloy structure with minimum distortion was established. |
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