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连霍高速加宽扩建上跨郑西高铁阌乡隧道形成浅埋隧道,对郑西高铁运营安全构成影响。本文对连霍高速跨郑西高铁阌乡隧道概况进行了介绍,论述了连霍高速加宽扩建对阌乡隧道的影响,提出了拱桥式、桩基拱桥式及梁板式加固方案,并从施工、经济及结构安全三个方面对三种方案进行了分析比选,确定梁板式防护方案为最优方案。
Even the Huohuo high-speed widening and expansion of the tunnel across Zhengxi high-speed railway to form shallow tunnel affect the safety of Zhengzhou-Xi’an high-speed rail operation. In this paper, the general situation of Lianhuo high-speed tunnel across Zhengxi high-speed railway is introduced, the influence of Lianhuo high-speed widening on Xiangxiang tunnel is discussed, and the arch bridge, pile-based arch and beam-plate reinforcement schemes are proposed. , Economic and structural safety in three aspects of the three programs were analyzed and compared to determine the best plan beam protection plan.