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山区客运专线桥梁与公路桥梁的交叉在所难免。客运专线下穿既有公路时,为保证高铁运营安全,要严格做好防护设计。本文通过研究,拟得到高铁桥梁下穿既有公路桥梁的经济合理的防护方案。通过对西成客运专线下穿既有公路桥梁的防护方案的研究,对多种防护方案进行了对比研究,提出了各个方案的优缺点及适用范围,为类似工程设计提供了依据。
Mountain Passenger Dedicated Bridge and the highway bridge is inevitable. Passenger hotline under the existing roads, in order to ensure the safety of high-speed rail operations, we must strictly carry out protective design. Through the research, this paper intends to get the economical and reasonable protection plan of the existing highways under the bridge. Through the research on the protection scheme of Xicheng Passenger Dedicated Line passing under the existing highway bridges and bridges, a comparative study of various protection schemes has been made, and the advantages and disadvantages as well as the applicable scope of each scheme have been put forward, which provides the basis for similar project design.