【作者】 严德群；

【导师】 姜弘道； 张燎军；

【作者基本信息】 河海大学 ， 水工结构工程， 2001， 硕士

【摘要】 三维锚杆的数值模拟及其与结构、岩基的相互作用分析一直是土木、水利领域研究的重要课题。对目前的分析方法进行研究、对比、改进，提出更合理、适用的数学模型和计算方法，在实际工程中具有重要意义。 首先，本文在总结对比现有几种锚杆数值分析方法的基础上，对考虑了灌浆切向受力性态的三维锚杆单元理论及应用进行了深入研究，用有限元方法开发了计算程序，并通过实例对不同分析方法的特点和实用性进行了研究和验证。 其次，本文对结构和基础的接触问题研究现状进行了回顾分析，并在“空间无厚度接触单元”的基础上，提出了模拟接缝面切向滑动的本构关系，采用“变增量搜索法”进行计算，通过算例分析得到了该模型的合理性、实用性验证。 最后，作为工程应用实例，对三峡船闸人字门支持体结构-锚杆-岩基的相互作用进行了计算分析，得到了各部分的变形特征和应力规律，给工程设计提供了一些具有实用价值的参考依据。更多还原

【Abstract】 AbstractThe numerical simulating methods of bolt and it’s interaction with structure and rock foundation are key problems in the research of civil engineering and hydraulic structure engineering. It’s very important to improve the old calculation methods and mathematics models based on deeply researching and contrasting of them.First of all, this dissertation reviews several bolt numerical simulating methods which are used at present, and makes special research to the theory and applicability of the 3-D bolt element which takes the tangential mechanics properties of the grout into account. By means of the FEM and the models mentioned, the program is developed to simulate the bolt and the structure. Through an example, the characteristics and the feasibilities of several analysis methods are verified to be correct.Secondly, around the present research situation about the interaction analysis of structure and foundation, this dissertation gives a detail review. Based on the 3-D non-thickness jointed element theory, a new model is proposed which simulates the tangential slip effect of the jointed face. By means of Increment Loads searched automatically Methods, the program is achieved to validate the feasibilities of the model.At last, applying- the methods mentioned before, this dissertation analyses the interaction among the structure, bolt and rock foundation of miter gates’ support structure in Three George project’s forever lock, and draws conclusions of each part’s mechanics characteristics. These results are very useful to the design of the project.更多还原