全长黏结非金属抗浮锚杆体系设计方法研究  

Research on design method of full-length bonded non-metal anti-floating anchor system

作　　者：白晓宇[1] 井德胜 张明义[1] 涂兵雄[2] 魏国 吕承禄 黄春霞 BAI Xiaoyu;JING Desheng;ZHANG Mingyi;TU Bingxiong;WEI Guo;LÜ Chenglu;HUANG Chunxia(College of Civil Engineering,Qingdao University of Technology,Qingdao 266520,China;Huaqiao University,Qingdao University of Technology,Xiamen 361021,China;Qingdao Shiyun Construction Machinery Co.Ltd,Qingdao 266042,China;Nanjing Chenyuan Construction Technology Co.Ltd.,Nanjing 210028,China)

机构地区：[1]青岛理工大学土木工程学院,山东青岛266520 [2]华侨大学土木工程学院,福建厦门361021 [3]青岛施运机械施工有限责任公司,山东青岛266042 [4]南京宸远建筑科技有限公司,江苏南京210028

出　　处：《中南大学学报（自然科学版）》2022年第8期3168-3177,共10页Journal of Central South University:Science and Technology

基　　金：山东省自然科学基金重点资助项目(ZR2020KE009);国家自然科学基金资助项目(51708316);山东省博士后创新项目(201903043);山东省高等学校科技计划项目(J16LG02)。

摘　　要：从全长黏结非金属抗浮锚杆的作用机理和破坏模式出发,对非金属抗浮锚杆的选型、内锚固段设计、外锚固段设计以及稳定性验算进行论述。研究结果表明:在锚杆选型中,应充分利用直径小、强度高的GFRP抗浮锚杆替代大直径钢筋锚杆;在外锚固设计中,明确了内锚固段极限黏结长度的计算方法,提出了机械锚固、金属-GFRP混合连接以及不同直径锚筋连接的设计方法,为抗浮工程设计提供了新思路;在内锚固设计中,建议在保证锚杆抗拔承载力的前提下,适当缩短锚固段长度;在抗浮稳定性设计中,应采用综合安全系数法和分项系数表达方式进行抗浮体系验算。Based on the mechanism and failure mode of full-length bonded non-metallic anti-floating anchor, the selection of non-metallic anti-floating anchor, the design of internal and external anchorage sections and the stability checking calculation were discussed. The results show that GFRP anti-floating anchor with small diameter and high strength should be fully used to replace large diameter steel anchor in anchor selection. In the external anchorage design, the calculation method of the ultimate bond length of the internal anchorage section is clarified,and the design methods of mechanical anchorage, metal-GFRP hybrid connection and different diameter anchor bar connection are proposed, which provides a new idea for anti-floating engineering design. In the internal anchorage design, it is suggested that the anchorage length should be appropriately shortened on the premise of ensuring the uplift bearing capacity of the anchor. In the design of anti-floating stability, the comprehensive safety factor method and the expression of partial coefficient should be used to check the anti-floating system.

关 键 词：非金属抗浮锚杆 设计方法 内锚固段 外锚固段 稳定性验算 

分 类 号：TU47[建筑科学—结构工程]