CAJ | 학술논문

随着隧道工程的建设,公路隧道的非对称挤压型破坏问题越发突出. 文章在圆形隧道断面塑性区的鲁宾涅特解基础上,通过旋转最大主应力作用方向,由复变函数理论得到了隧道深埋段非圆形洞口围岩塑性区半径解析公式. 参考非轴对称荷载作用下圆形隧道弹塑性位移解析解,利用映射函数和变换规律,推导出了实际隧道围岩挤压型变形量的计算公式. 研究分析表明,实际隧道围岩塑形区分布与最大主应力及隧洞形状相关,通过一定的分析和计算可得到实际隧道塑形区分布范围,为同类隧道的设计、施工提供参考.
수착수도공정적건설,공로수도적비대칭제압형파배문제월발돌출. 문장재원형수도단면소성구적로빈열특해기출상,통과선전최대주응력작용방향,유복변함수이론득도료수도심매단비원형동구위암소성구반경해석공식. 삼고비축대칭하재작용하원형수도탄소성위이해석해,이용영사함수화변환규률,추도출료실제수도위암제압형변형량적계산공식. 연구분석표명,실제수도위암소형구분포여최대주응력급수동형상상관,통과일정적분석화계산가득도실제수도소형구분포범위,위동류수도적설계、시공제공삼고.
With the development of tunnel projects, problems relate d to the squeezing deformation of highway tunnels under asymmetrical loads are more prominent. In this paper, based on Rubinnat's solution for the plastic zone of a circular tunnel section and by means of rotating the direction of the maximum principal stress, an ana-lytical formula for the radius of the plastic zone of surrounding rock around a non-circular portal of a deep buried tunnel section was derived by the complex variable function theory. Furthermore, referencing the analytical solu-tion to the elastic-plastic displacement of a circular tunnel under an asymmetrical load and using the mapping function and transformation law, a calculation formula for the actual squeezing deformation of tunnel surrounding rock was deduced accordingly. The analysis indicates that the actual plastic zone distribution of a tunnel's sur-rounding rocks is related to the maximum principal stress and shape of the tunnel, and the actual distribution scope of the plastic zone of a tunnel's surrounding rocks can be obtained by analysis and calculation, which pro-vides a reference for the design and construction of similar tunnels.