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FAST工程环形检修道路在5H崩塌槽堆积体处拟通过桥梁方案跨越,但其施工工期长、造价高,对桥梁基础持力层的要求也高。鉴于此,各方在通过详细勘察、专项论证之后,提出了“桥改路”方案,即通过路基形式穿越崩塌堆积体,并对路基进行安全防护。实践证明该方案可行、经济、安全、有效,成功达到了节省工期和造价的目的。“桥改路”方案的成功表明:只要经过合理的勘察设计施工,利用路基形式穿越崩塌堆积体是可行的。这也对类似条件下的工程提供了一定的参考和借鉴。
The FAST Project Ring Road is intended to be bridged through a bridge scheme at 5H collapse trough but its construction period is long, the cost is high, and the requirement for the foundation of bridge foundation is also high. In view of this, after thorough investigation and special demonstration, all parties proposed a scheme of “bridge-to-road improvement”, that is, crossing the collapse accumulation body through the roadbed form and conducting road safety protection. Practice has proved that the program is feasible, economical, safe and effective, and has successfully achieved the goal of saving construction time and cost. The success of the scheme of “bridge to change road” shows that it is feasible to use the roadbed form to cross the collapse stack as long as the reasonable survey, design and construction are carried out. This also provides some reference and reference for the projects under similar conditions.