Based on the analysis of the highway bridges damages in the earthquakes of recently twenty years and the introduction of the development and the present technology of the world, the paper has explored a useful falling-off prevention device.
本论文在分析近20年来桥梁震害及其原因和介绍国内外防止落梁技术的发展和现状的基础上，开发了有效的落梁防止装置。
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