基于三剪统一强度理论的挡土墙土压力计算的水平层分析法及加筋挡土墙计算理论研究-交通运输工程专业论文.docxVIP

Calculation study of the Horizontal layer analysis method on Earth Pressure of retaining wall and reinforced earth retaining wall based on the Triple-shear Unified Strength Theory A Dissertation Submitted for the Degree of Master Candidate：Wang Shuhong Supervisor：Prof. Gao Jiang-ping Chang’an University, Xi’an, China i i 摘 要 强度理论是工程中应用最广泛的技术基础理论之一，是各种工程结构强度计算和 设计必需的基础理论，在理论研究、工程应用和材料的有效利用等方面都具有重要的 意义。本文介绍了强度理论的发展过程以及 Mohr-Coulomb 强度理论、双剪统一强度 理论、三剪统一强度理论的内容、基本原理，表达式等，并在此基础上对三种强度理 论进行对比分析，最终得出三剪强度理论是强度理论最一般的形式，其他的强度理论 都是它的特殊情况或线性逼近，它包括了所有强度理论的内容，真正意义上地实现了 强度理论的统一。 本文将三剪统一强度理论应用到挡土墙土压力计算的水平层分析法及加筋挡土墙 的计算中，推导出按水平层分析法计算挡土墙土压力及加筋挡土墙的计算公式，这些 公式可以灵活地适用 于各种不同特性填土 材料土压力的计算。 在此基础上运用 QBASIC 软件分别对三种强度理论计算挡土墙土压力的计算过程进行编程，从而得到 更为准确、科学、全面的解，以期能够充分发挥材料强度潜质、降低工程造价和节约 能源，并能指导工程实际应用，进而带来一定的社会效益和经济效益。 关键词：三剪统一强度理论；双剪强度理论；Mohr-Coulomb 强度理论；挡土墙 土压力；水平层分析法；加筋挡土墙；QBASIC ii ii Abstract Strength theory is the most widely used in engineering technology of one of the basic theory of is all sorts of engineering structure strength calculation and design the necessary basic theory, and theory research and engineering application and the effective use of materials which great significance. This paper introduces the strength theory of the development process and the Mohr-Coulomb strength theory, double shear strength theory, three unified cut unified strength theory of the content and the basic principle, the expression, etc, and based on three strength comparison analysis theory, eventually got three shear strength theory is the most common form of strength theory, other strength theory is its special circumstances or linear approximation, and it includes all the contents of the strength theory, the real realized the strength theory unity. This paper will apply Triple shear unified strength theory to horizontal earth pressure calculation for retaining layer analysis and calculation of reinforced earth retaining wall， and derive the correlation calculation formulas, the formulas can be flexibly app