中外隧洞衬砌结构分析方法差异研究

发布时间：2018-05-13 21:02

本文选题：Bierbaumer理论 + 围岩压力　；参考：《人民长江》2016年06期

【摘要】：针对厄瓜多尔CCS水电站监理提出采用Bierbaumer理论计算隧洞围岩压力和使用美国规范进行结构分析的要求,结合围岩类别参数,综合分析了岩柱法、太沙基理论、普氏压力拱理论、Bierbaumer理论、国内规范中围岩压力计算差异及各自的优缺点。分析表明,前三种理论不适合于该工程围岩压力分析。提出立足于Bierbaumer理论,同时借鉴国内规范对围岩荷载计算方法进行修正。全面采用美国规范进行地震及非地震工况的结构设计,同时采用SAP2000、ANSYS等有限元软件分析尾水洞特殊部位,如大断面衬砌拐角及拱肩受力过大、洞壁大埋管造成结构厚度削弱、U型断面壁薄等问题。研究认为各关键结构设计满足美国规范各项要求,可供国外类似工程的设计和研究借鉴。
[Abstract]:According to the requirements of the supervision of Ecuador CCS hydropower station to use Bierbaumer theory to calculate the surrounding rock pressure of the tunnel and to use the American code for structural analysis, combined with the parameters of surrounding rock category, the rock column method and the theory of Teshaji are comprehensively analyzed. The theory of pressure arch is based on Bierbaumer's theory, and the difference of calculation of surrounding rock pressure in domestic codes and their advantages and disadvantages. The analysis shows that the first three theories are not suitable for the surrounding rock pressure analysis of the project. Based on Bierbaumer theory and using domestic codes for reference, the calculation method of surrounding rock load is revised. The structural design of seismic and non-seismic working conditions is carried out according to American codes. At the same time, the finite element software SAP2000 ANSYS is used to analyze the special parts of the tailrace tunnel, such as large section lining corner and overloaded arch shoulder. The thickness of the large buried pipe of the tunnel wall weakens the thickness of the U-shaped section wall, and so on. It is concluded that the key structural designs meet the requirements of American codes and can be used for reference in the design and research of similar projects abroad.
【作者单位】：黄河勘测规划设计有限公司;
【分类号】：TV554

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