城市核心区域桥梁扩大基础托换施工技术研究

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中图分类号：K928.78 文献标志码：A 文章编号：2095-2945（2026）03-0135-05

Abstract：Withtherapiddevelopmentofundergroundengineringindomesticcities，theconflictbetweentunnelsection engineeringandexistingurbanelevatedandbridgepilefoundationshasbecomeincreasinglyobvious.Basedontheconstruction exampleofexpandedfoundationunderpinningofQingnianRiverBridgefoundation，thispaperdiscusestheexpandedfoundation pilefoundationunderpiningtechnologyandintroducesitsconstructionprocessandtechnicalparametersindetailRelevant conclusions can provide reference for the construction of similar projects.

Keywords：shield tunnel；bridgepilefoundation；expandedfoundationunderpinning;systemconversionconstruction；bridge structure

目前，随着城市地下空间发展速度的不断加快，在地下工程中常常遇见不同构筑物之间相互交错影响的情况[1-2]。（剩余5471字）