公路边坡抗震支挡防护计算方法研究

发布时间：2018-05-12 17:26

本文选题：公路边坡 + 地震力偏角　；参考：《长安大学》2014年硕士论文

【摘要】：随着我国公路交通建设的快速发展，高速公路逐渐向山区及其它地形复杂地区延伸。在高速公路的建设过程中，将会遇到大量的公路边坡，这些公路边坡的稳定性受边坡岩土体性质、地质条件及外部环境（如地震荷载等）的影响。对于稳定性不满足设计要求的边坡，需要对其进行边坡防护。传统的边坡抗震支挡防护采用拟静力法进行计算，忽视了地震力偏角、坡体地质分层、坡顶坡率等因素对边坡稳定性的影响，存在较大误差，已不能满足工程设计要求。因此，本文以十天高速公路为依托工程，通过现场工程调查，理论计算和分析评价等方法，对公路边坡的抗震支挡防护计算方法进行研究，主要包括以下内容： 1.对国内外公路边坡抗震支挡防护相关资料开展了较系统的调研和检索，，对现有抗震支挡防护措施及其理论计算方法进行了分析评价，同时分析了公路边坡的地质构造、地形地貌、水文地质条件、岩土体结构类型、地震力偏角等因素对公路边坡稳定性的影响。 2.在国内外资料调研、工程现场调查的基础上，对公路边坡滑动失稳机理和抗震支挡防护计算方法开展了深入研究，提出了公路边坡抗震支挡防护的力学模型及计算方法，编制了相应的计算分析软件。 3.在上述计算软件的基础上，针对影响公路边坡稳定性的岩土体性质参数、防护措施、地震荷载等因素开展了系统的计算分析，得出了公路边坡在不同坡体参数以及地震参数情况下的稳定性变化规律，为公路边坡抗震设计提供了参考依据。 4.以十堰至天水高速公路陕西段为依托工程，在对工程工作区地震安全评价的基础上，结合地质勘探、岩土参数取样试验，选择了三处典型边坡工程进行了稳定性评价。
[Abstract]:With the rapid development of highway traffic construction in China, expressway gradually extends to mountainous areas and other complex terrain areas. In the process of highway construction, a large number of highway slopes will be encountered. The stability of these highway slopes is affected by the rock and soil properties of the slopes, geological conditions and external environment (such as earthquake load). Slope protection is needed for slopes whose stability does not meet the design requirements. The traditional anti-seismic retaining protection of slope is calculated by quasi-static method, and the influence of seismic force deviation angle, geological stratification of slope body and slope ratio on slope stability is ignored, and there are large errors, which can not meet the requirements of engineering design. Therefore, based on the 10-day expressway project, through the field engineering investigation, theoretical calculation and analysis and evaluation methods, this paper studies the calculation method of anti-seismic retaining protection of highway slope, mainly including the following contents: 1. This paper makes a systematic investigation and retrieval on the relative data of anti-seismic retaining protection of highway slopes at home and abroad, analyzes and evaluates the existing anti-seismic retaining protection measures and their theoretical calculation methods, and analyses the geological structure of highway slopes at the same time. The influence of topography, hydrogeology, rock and soil structure, seismic force deviation angle on the stability of highway slope. 2. Based on the investigation of domestic and foreign data and the field investigation of engineering, the mechanism of sliding instability of highway slope and the calculation method of anti-seismic retaining protection are studied deeply, and the mechanical model and calculation method of anti-seismic retaining protection of highway slope are put forward. The corresponding calculation and analysis software is developed. 3. On the basis of the above calculation software, a systematic calculation and analysis is carried out on the factors affecting the stability of highway slope, such as the property parameters of rock and soil, the protective measures, the seismic load, and so on. The stability variation law of highway slope under different slope body parameters and seismic parameters is obtained, which provides a reference for seismic design of highway slope. 4. Based on the project of Shaanxi section of Shiyan to Tianshui Expressway, on the basis of seismic safety evaluation of the work area of the project, combined with geological exploration and geotechnical parameter sampling test, three typical slope projects were selected for stability evaluation.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U417.1

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