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珠江口隧道水下近距离侧穿桥桩影响分析

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为确保盾构隧道近距离施工过程中既有交通结构安全运营,以珠江口隧道万顷沙侧盾构段近距离侧穿凫洲大桥48、49号桥墩工程为例,建立了考虑壁后注浆、地层损失率等多因素精细化数值模拟模型,对地层加固后盾构侧穿凫洲大桥桥桩的相互作用进行安全评估,分析桩基竖向位移、水平位移、差异性沉降,结果表明:加固措施合理有效,对桥桩及桩周土体变形起到了控制作用.
Analysis on the Influence of Short Distance Lateral Crossing of Bridge Piles in Pearl River Estuary Tunnel
In order to ensure the operationof existing traffic safety structures during the short distance construction of shield tunnel this paper takes the No.48 and 49 of Fuzhou Bridge Pier Engineering,which nearby passes through shield section on Wanqingsha of Pearl River Estuary tunnel as an example,establishes a detailed nu-merical simulation model considering multiple factors such as grouting behind the wall and formation loss rate.The safety assessment and analysis were carried out on the interaction between pile piles of shield side cross-ing Fuzhou Bridge after formation reinforcement.The results show that the strengthening measures are reason-able and effective,which can control the deformation of bridge pile and soil around the pile.

tunnel engineeringshield methodbridge piles

吴仲伦、李腾飞、于勇

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中国铁路广州局集团公司 江门工程建设指挥部,广东 江门 529100

中铁第六勘察设计院集团有限公司, 天津 300308

隧道工程 盾构法 桥桩

2024

天津建设科技
天津市建设科技信息中心 天津市市政工程研究院

天津建设科技

影响因子:0.299
ISSN:1008-3197
年,卷(期):2024.34(1)
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