滨海深基坑碳纤维锚索支护变形特性现场试验

Field Test of Deformation Characteristics for Carbon Fiber Anchor Cable Support in Coastal Deep Foundation Pit

摘要

为了研究碳纤维锚索应用于滨海深基坑支护工程的可行性,依托烟台市某滨海深基坑工程,开展深基坑灌注桩+预应力碳纤维锚索支护工程现场试验。开发预应力碳纤维锚索成套化施工工艺,揭示碳纤维锚索随基坑开挖过程的预应力损失规律,明确深基坑的变形特性。研究结果表明,所提出的预应力碳纤维锚索成套化施工工艺在滨海深基坑支护工程中成功应用,具有较强的适用性。

Abstract

To thoroughly investigate the feasibility of carbon fiber anchor cable support in coastal deep excavations, a field test was conducted on cast-in-place pile + prestressed carbon fiber anchor cable support based on a deep excavation project in Yantai City. This study analyzed the prestress loss laws and deformation patterns of the deep foundation pit during excavation under the action of prestressed carbon fiber anchor cables using a complete set of construction techniques. The study results show that the prestressed carbon fiber anchor cable has been successfully applied in coastal deep foundation pit support projects.

关键词

深基坑 / 碳纤维锚索 / 现场试验 / 锚索轴力 / 基坑变形

Key words

deep foundation pit / carbon fiber anchor cable / field test / anchor cable shaft force / foundation pit deformation

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基金资助

国家自然科学基金资助项目(52478348)

山东省自然科学基金资助项目(ZR2024ME224)

青岛市自然科学基金原创探索项目(24-4-4-zrjj-180-jch)

山东省泰山学者工程项目(tsqn202306234)

山东省住房城乡建设科技计划项目(2024KYKF-FZJZ047)