盾构管片弹性橡胶密封垫防水性能灵敏度分析

发布时间：2018-04-26 15:30

本文选题：弹性橡胶密封垫 + 随机参数　；参考：《同济大学学报(自然科学版)》2017年03期

【摘要】：为研究由生产加工造成的橡胶密封垫材料和几何参数的随机性对盾构管片接头防水性能的影响,选择密封垫橡胶的材料硬度孔洞圆心坐标孔径等参数作为随机输入变量,以密封垫表面平均接触应力为分析目标,运用ANSYSPDS随机分析模块计算各随机参数对表面平均接触应力的灵敏度数值,并在此基础上探究各随机参数的公差对密封垫防水性能的影响程度.对某城市地铁盾构隧道弹性密封垫的分析结果表明:橡胶材料力学参数是影响抗水能力的主要因素,尤其是C10.几何参数中,截面上部孔径的变化对下表面接触应力影响较大,而圆孔位置对临近表面的接触应力影响敏感,中部圆孔对上、下表面接触应力的影响程度相当.
[Abstract]:In order to study the effect of the randomness of rubber gasket material and geometric parameters on the waterproof performance of shield segment joint, the hardness of rubber material was selected. Hole center coordinates? Taking the average contact stress of the gasket surface as the analysis object, the ANSYSPDS random analysis module is used to calculate the sensitivity of each random parameter to the average contact stress of the surface. On this basis, the influence of tolerance of random parameters on waterproofing performance of gasket was investigated. The analysis results of elastic gasket for shield tunnel of a city subway show that the mechanical parameters of rubber materials are the main factors affecting the water resistance, especially C10. Among the geometric parameters, the change of the upper section aperture has a great influence on the contact stress of the lower surface, while the position of the circular hole is sensitive to the contact stress near the surface, and the influence degree of the contact stress on the upper and lower surface of the central circular hole is the same.
【作者单位】：同济大学铁道与城市轨道交通研究院;
【基金】：流体及动力机械教育部重点实验室开放基金(SZJJ2015-034)
【分类号】：U455.43

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