【作者】 李明；

【导师】 郑先昌； 蒋涛；

【作者基本信息】 广州大学 ， 建筑与土木工程， 2012， 硕士

【摘要】 岩质边坡问题是常见的岩土工程问题，鉴于边坡失稳产生的灾害后果严重，边坡防护加固的研究工作得到国内外众多专家学者的高度重视。现如今边坡支护的技术发展比较迅速，但是很多支护方案的理论依据还不是很成熟，从而出现了理论的发展滞后于技术的发展的现象。理论的不成熟导致了边坡支护设计方案相对比较保守。在经济性、便利性和安全性这三个方面中，设计工作者往往仅重视安全性。为了保证工程具有足够的安全性系数，有时甚至不得不降低对其他两方面的考虑程度。边坡优化设计的目的就是为了保证在具有足够安全性的前提下，更多的考虑经济性和便利性，使得三者之间的关系变得更加的协调。本文以广东（中旅）南海西岸旅游产业园五星级酒店边坡支护工程为实际案例。此工程采用锚喷支护（挂网喷砼+锚杆+预应力锚索+腰梁）方案，笔者运用有限元分析软件Midas GTS对边坡支护前后的稳定性进行分析，对比边坡支护前后稳定性系数的差异。根据收集边坡的勘察设计资料，通过对现场边坡情况的观察，发现边坡支护比较保守，对此设计方案进行优化是可取的。本文仅对锚杆部分进行优化，方法采用正交试验设计法。通过对试验结果进行分析，得出了锚杆的长度、锚杆的倾角和锚杆的垂直距离三者之间的相对优化的组合形式。优化后的设计不论是在安全性还是在经济性和便利性方面都得到了提高。更多还原

【Abstract】 Rock slope is a common problem of geotechnical engineering problem，due tothe serious consequences of disasters caused by slope failure，a lot of domestic andinternational experts and scholars highly concentrate their attention on researchwork in slope protection and reinforcement. Nowadays slope supportingtechnologies are developing more rapidly，but many support theories are not verymature，which results in the phenomenon of the development of the theory lagsbehind the development of the technology.The immature theory leads to the resultthat the supporting design of slope is relatively conservative. In the aspects ofeconomy，convenience and safety, designers are often pay attention to safetyfactor.In order to ensure the safety coefficient of the project, in some casesdesigners have to lower the degree of consideration of others. The purpose of theslope optimum design is to ensure that in the premise of the slope has a enoughsafety coefficient，more consideration of economy and convenience have beenmade，and make the relationship between those more coordinate.This paper is based on practical case of the Guangdong (CTS) south west banktourism industrial park slope supporting project of five-star hotel. This projectadopts the scheme of anchor and shotcrete support (net-suspended spray concreteand anchor bolt and prestressed anchor cable and waist beams)the author uses thefinite element analysis software Midas GTS to analyze the slope stability coefficientbetween before and after supportion，and compares the difference of stabilitycoefficient in two cases. The author collected the slope survey and design materials,and observed the scene of the slope in practice, and finally discovered the slopesupport scheme is relatively conservative. so optimum design is desirable. In thispaper，only part of anchor bolt is optimized，and the optimum method uses themethod of orthogonal test design. Through the analysis of test results, it is concludedthat the relative optimization of the combination of the form of the anchor boltlength，the anchor bolt angle and the vertical distance has been chose. The optimum design has improved the degree of aspects in safety and in economy andconvenience.更多还原