For direct - burial long haul line . Bridge and culvert, Duct, Bullet - proof aerial deployment and LANs.
长途通信直埋干线，桥涵，管道，架空（防弹）及市内通信。The key points of polypropylene fiber concrete in bridge and culvert works are also introduced.
文中还介绍了聚丙烯纤维混凝土在桥涵工程中的施工要点。Vehicle bumping at bridge-head is a kind of common phenomenon in the small bridges and culverts of mountain highway under operation.
桥头跳车是山区公路小桥涵运营中的一种常见现象，它影响了行车的舒适与安全。Debris flow is the most typical geological disaster along Tianshan Highway, and it seriously threats the roads, bridges and culverts.
泥石流是天山公路沿线发育最典型的地质灾害，是道路路基、路面、桥涵结构强烈的毁损动力。General Code for Design of Highway Bridges and Culverts?
公路桥涵设计通用规范Problems such as head rising, head firming or deviated direction often occur during bridge and culvert construction with jacking method.
桥涵顶进施工中常出现抬头、扎头或方向偏差等问题，对此除应加强观测、认真预防外，还必须及时纠偏。Application of the used-for-bridge pool as a protection for bridges culverts across mountainous roads
消力池在山区公路桥涵防护中的应用Reasons for Damage of Light Bridge Abutment of Small Bridge-Culvert, and Measures for Prevention and Treatment of It
小桥涵轻型桥台损坏原因及防治措施Method for track reinforcing and its inspecting calculation in construction of existing culvert lengthening
既有线桥涵接长施工中线路的加固方法及检算