This paper describes general structure design and structure load test of girder type railway bridge erecting machine with single simple supported beam and overhead transversely travelling trolley.

本文介绍我国一种新型单梁简支空中横移梁式铁路架桥机的总体结构设计及其结构荷载试验。

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This paper introduces an optimization design method for overhead traveling crane structure with double bridge which is based on system analysis.

介绍了基于系统分析的双梁桥式起重机桥架结构优化设计方法。

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The collapse was the result of a collision between the tractor-trailer and the overhead structure of the bridge, Washington State Patrol Chief John Batiste told reporters.

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