隧道二次衬砌支护的非概率可靠性分析
发布时间：2018-12-10 15:40
【摘要】：本文以省界隧道为依托，针对隧道不同围岩下不同衬砌的可靠性问题，采用了荷载—结构模型，通过区间理论计算出衬砌不同截面的非概率可靠性指标，本文主要做了以下几个方面的研究工作。 1.通过工程数据的整理，用荷载-结构模型分别对浅埋段、深埋段、加宽段衬砌的内力进行分析和求解。 2.介绍了可靠性的基本概念和利用区间计算的理论来计算非概率体系下可靠指标的方法和意义。 3.将之前的所有准备工作的成果应用到省界隧道的衬砌中来，得出所有衬砌各截面的非概率可靠性指标，找出衬砌的薄弱面和薄弱的衬砌。 4.通过对薄弱面和薄弱衬砌的控制，提高隧道衬砌的非概率可靠性指标。 5.对省界隧道的衬砌整体的非概率可靠性指标进行分析，提出了提高衬砌整体非概率可靠性指标的方法。
[Abstract]:In this paper, based on the provincial boundary tunnel and aiming at the reliability of different lining under different surrounding rock, the load-structure model is adopted, and the non-probabilistic reliability index of different sections of lining is calculated by interval theory. This paper mainly does the following research work. 1. The internal forces of lining in shallow buried section, deep buried section and widening section are analyzed and solved by using load-structure model through the collation of engineering data. 2. This paper introduces the basic concept of reliability and the method and significance of using the theory of interval calculation to calculate the reliability index in non-probabilistic system. 3. By applying all the previous preparatory work to the lining of the provincial boundary tunnel, the non-probabilistic reliability indexes of each section of the lining are obtained, and the weak surface and the weak lining of the lining are found out. 4. The non-probabilistic reliability index of tunnel lining is improved by controlling the weak surface and weak lining. 5. The non-probabilistic reliability index of the whole lining of the provincial boundary tunnel is analyzed, and the method to improve the non-probabilistic reliability index of the lining is put forward.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U455.91
本文编号：2370825
[Abstract]:In this paper, based on the provincial boundary tunnel and aiming at the reliability of different lining under different surrounding rock, the load-structure model is adopted, and the non-probabilistic reliability index of different sections of lining is calculated by interval theory. This paper mainly does the following research work. 1. The internal forces of lining in shallow buried section, deep buried section and widening section are analyzed and solved by using load-structure model through the collation of engineering data. 2. This paper introduces the basic concept of reliability and the method and significance of using the theory of interval calculation to calculate the reliability index in non-probabilistic system. 3. By applying all the previous preparatory work to the lining of the provincial boundary tunnel, the non-probabilistic reliability indexes of each section of the lining are obtained, and the weak surface and the weak lining of the lining are found out. 4. The non-probabilistic reliability index of tunnel lining is improved by controlling the weak surface and weak lining. 5. The non-probabilistic reliability index of the whole lining of the provincial boundary tunnel is analyzed, and the method to improve the non-probabilistic reliability index of the lining is put forward.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U455.91
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本文编号：2370825
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