深水庫區(qū)鉆孔平臺方案比選及成孔錨固施工技術(shù)研究

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摘  要：結(jié)合溫嶺至常山公路遂昌湖山至黃沙腰段工程紅星坪大橋施工條件，單樁獨柱墩7 m×58 m跨徑橋梁在深水庫區(qū)、大落差、硬質(zhì)裸巖地質(zhì)條件下，從安全、工期、經(jīng)濟性和適用性方面選定施工便捷、安全可控且成本可控的固定平臺+聯(lián)絡(luò)通道施工方法。同時介紹平臺成孔錨固工藝，為類似工程提供借鑒。

關(guān)鍵詞：超大直徑；單樁獨柱；深水裸巖；固定平臺；成孔錨固

中圖分類號：U445      文獻標(biāo)志碼：A          文章編號：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

深水庫區(qū)橋梁施工平臺是完成橋梁基礎(chǔ)及下構(gòu)的必要條件，尤其對于單樁獨柱墩結(jié)構(gòu)施工難度大，其施工平臺選擇直接決定了橋梁施工工期長短、造價高低以及安全、質(zhì)量的可控程度。（剩余3251字）