深水库区钻孔平台方案比选及成孔锚固施工技术研究

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摘 要:结合温岭至常山公路遂昌湖山至黄沙腰段工程红星坪大桥施工条件,单桩独柱墩7 m×58 m跨径桥梁在深水库区、大落差、硬质裸岩地质条件下,从安全、工期、经济性和适用性方面选定施工便捷、安全可控且成本可控的固定平台+联络通道施工方法。同时介绍平台成孔锚固工艺,为类似工程提供借鉴。
关键词:超大直径;单桩独柱;深水裸岩;固定平台;成孔锚固
中图分类号:U445 文献标志码:A 文章编号:2095-2945(2024)33-0169-04
Abstract: Combined with the construction conditions of Hongxingping Bridge in the Suichang Hushan to Huangshayao section of Wenling-Changshan Highway, the single-pile single-column pier 7 m×58 m span bridge is under the geological conditions of deep-water reservoir area, large drop, and hard bare rock. From the aspects of safety, construction period, economy and applicability, a fixed platform + communication channel construction method that is convenient, safe and controllable, and the platform hole-forming and anchoring technology is introduced to provide reference for similar projects.
Keywords: ultra-large diameter; single pile and single column; deepwater bare rock; fixed platform; hole-forming anchorage
深水库区桥梁施工平台是完成桥梁基础及下构的必要条件,尤其对于单桩独柱墩结构施工难度大,其施工平台选择直接决定了桥梁施工工期长短、造价高低以及安全、质量的可控程度。(剩余3251字)