抗滑桩治理滑坡的应用技术分析研究.pdf

抗滑桩治理滑坡的应用技术研究摘要抗滑桩在我国用于滑坡的预防和治理已经有了四十多年的历史。本文主要研究了抗滑桩在滑坡治理中的应用和设计方法,介绍了抗滑桩的历史和发展情况并深入探讨了抗滑桩的作用机理、计算参数的选取、设计理论和桩的使用条件等。对一些普遍规律进行了总结并对目前采用的设计方法中存在的问题和设计中应注意的事项提出了一些看法。本课题结合自己参加芜湖市城市防洪青弋江花津桥防洪墙滑坡治理工程的设计实践,在该滑坡工程地质勘察、土工试验和监测资料的基础上,详细的分析了该滑坡产生的原因和原抗滑桩加固设计上的缺陷,建立了滑坡和抗滑桩的简化力学模型,阐明了抗滑桩的作用机理。利用极限平衡理论,采用传递系数法,系统地给出了滑坡推力和桩前剩余抗滑力的计算方法。计算桩身内力时分别利用悬臂桩法、弹性地基框架和TomioIto塑性变形理论建立力学模型,并给出了设计中计算参数取得的途径和具体的计算步骤。同时将竣工后的监测值和理论计算值作了比较,分析了两者问误差产生的原因和各计算方法的局限性。最后还提出了计算分析中未考虑的因素以利于进一步深入研究。关键词:滑坡抗滑桩悬臂桩法弹性地基框架塑性变形理论 The Research Pile forLandslide Cure Abstract Anti—slidingpile has been used forprevention and cure landslide more than forty treatise startsfrom thehistory and application ofanti—slidepile,and discuss roundly theinteractionmechanism between landslideandanti—slide pile as welI as themethod ofdesign and ,the author summarizes certainrolesandputs forward some opinions forthedesign,such asthemethod inthe treatiseofdesign withitscharacters. Based on essfuldesign furstrengthingoflandslide ofanti—flood wallbase located atWuhuH蛔ing bridge,the authoranalyzes the resultoflandslideand the bug ofthelastdesign which was afailure,and build thesimplified machanics model of anti— the model,the landslide thrustandremanentsliding resistance behind thepiles can becalculated withthe limitequilibrium theory and toe蚯cient oftransmission internal force oftheanti—slide pile is calculated with也e cantileverpile frame on elasticbasemethod and Tomio Ito’splastic deformation theory on thebase ofthereasonable parison ofthetheoretic resuR and the fractualmeasure result,the author analyzes the error’s ,ff have been pointed out thatthefactorswhich were notconsidered andthelimition ofcalculationmethod. Key words:landsfide,anti—slide pile,cantilever pile method,fralne on elasticplastic base,deformation theory 合肥工业大学本论文经答辩委员会全体委员审查,确认符合合肥工业大学硕士学位论文质量要求。主席: 委员: 答辩委员会签名绷葛狄合肥工业大学教授合肥工业大学教授乡砚p治安徽省水利水电勘测设计院正高乒诜佩心安徽