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土遗址楠竹锚固界面传力过程研究

芦苇 赵冬 李东波 毛筱霏

芦苇, 赵冬, 李东波, 毛筱霏. 土遗址楠竹锚固界面传力过程研究[J]. 力学学报, 2019, 51(2): 524-539. doi: 10.6052/0459-1879-18-349
引用本文: 芦苇, 赵冬, 李东波, 毛筱霏. 土遗址楠竹锚固界面传力过程研究[J]. 力学学报, 2019, 51(2): 524-539. doi: 10.6052/0459-1879-18-349
Wei Lu, Dong Zhao, Dongbo Li, Xiaofei Mao. STUDY ON THE FORCE TRANSFER PROCESS OF THE ANCHORAGE INTERFACE OF BAMBOO BOLT IN THE RAMMED EARTH SITES[J]. Chinese Journal of Theoretical and Applied Mechanics, 2019, 51(2): 524-539. doi: 10.6052/0459-1879-18-349
Citation: Wei Lu, Dong Zhao, Dongbo Li, Xiaofei Mao. STUDY ON THE FORCE TRANSFER PROCESS OF THE ANCHORAGE INTERFACE OF BAMBOO BOLT IN THE RAMMED EARTH SITES[J]. Chinese Journal of Theoretical and Applied Mechanics, 2019, 51(2): 524-539. doi: 10.6052/0459-1879-18-349

土遗址楠竹锚固界面传力过程研究

doi: 10.6052/0459-1879-18-349
基金项目: 国家自然科学基金(51878547);中国博士后基金(2018M633478)
详细信息
    作者简介:

    2) 芦苇, 讲师,主要研究方向:古建筑加固保护. E-mail: luwei_xauat@qq.com

  • 中图分类号: TU13

STUDY ON THE FORCE TRANSFER PROCESS OF THE ANCHORAGE INTERFACE OF BAMBOO BOLT IN THE RAMMED EARTH SITES

  • 摘要: 竹木锚固技术近年来被广泛应用于土遗址文物加固保护中,但其锚固界面传力机理尚不明确,严重制约着锚固技术的科学化、规模化应用.相关研究成果已经证实了合理的锚固界面粘结-滑移模型对锚固系统性能预测的重要性,本文在此基础上以楠竹-改性泥浆-夯土锚固系统为例,基于考虑完全脱粘现象的三线型粘结-滑移模型开展了锚固界面传力全过程研究.首先将锚固界面传力全过程分为6个连续阶段,分别对各阶段对应的界面应力、应变分布与演化过程进行理论解析,推导了锚杆轴向变形、界面滑移量、界面剪应力、界面剪应变等参数的封闭解,同时给出了极限锚固力与有效锚固长度的计算方法.在此基础上,通过识别载荷-位移曲线特征点对粘结-滑移模型参数进行了标定.最后采用两个土遗址原位拉拔试验对理论解析模型的合理性进行了对比验证,同时着重分析了锚固长度与锚杆轴向刚度两个因素对锚固性能的影响规律.本文提出的解析模型对存在完全脱粘现象的锚固界面传力过程分析具有广泛适用性,能够为土遗址锚固工程设计提供参考与指导.

     

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  • 收稿日期:  2018-10-22
  • 刊出日期:  2019-03-18

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