应变法在摩阻试验中的应用与研究  

Application and Research of Strain Method in Friction Test

作　　者：宗成思 何明星 崔鑫[1] ZONG Chengsi;HE Mingxing;CUI Xin

机构地区：[1]上海市建筑科学研究院有限公司,上海200032

出　　处：《上海公路》2024年第2期99-103,I0012,共6页Shanghai Highways

摘　　要：预应力孔道的成孔质量和锚下有效预应力是预应力施工技术的重难点。为掌握孔道弯曲半径和关键点定位坐标准确性,以及预应力施工张拉质量,采用应变法对摩阻试验和反拉法的各试验参数进行验证和对比分析。研究成果可为预应力施工张拉质量的控制提供参考。The quality of prestressing ducts and the effective prestress beneath anchors represent significant challenges in prestressing construction techniques.To ensure accuracy of the bending radius and key point positioning coordinates of the borehole,as well as the quality of prestressed construction and tensioning,the strain method was employed to validate and analyze test parameters from friction tests and reverse tensioning methods.The research results can provide reference for the control of tensioning quality in prestressed construction.

关 键 词：锚下有效预应力 摩阻试验 锚口和锚垫板摩阻 孔道摩阻 应变法 反拉法 

分 类 号：U446.1[建筑科学—桥梁与隧道工程]