本文選題：滑坡防治 + 預應力格構(gòu)錨固體系�。� 參考：《長安大學》2015年碩士論文

【摘要】：預應力格構(gòu)錨固體系是一種主動抗滑結(jié)構(gòu),具有表面護坡和深層加固雙重兼顧,結(jié)構(gòu)輕便,施工簡單,技術風險低等優(yōu)點。在滑坡防治工程中可以和抗滑樁等技術組合協(xié)調(diào)使用,與植被護坡技術相配合,既可以達到保證滑坡穩(wěn)定性的目的,又可以對滑坡進行有效的綠化,是一種高效、經(jīng)濟、環(huán)保的滑坡治理加固措施。但由于該技術在工程中應用時間不長,直至目前尚未建立有效、完善的設計理論,對其設計主要還是依據(jù)工程實踐經(jīng)驗,因此對預應力格構(gòu)錨固體系設計理論開展研究,具有重要的理論意義和工程應用價值。本文依托中國地質(zhì)調(diào)查局項目“滑坡防治格構(gòu)錨固技術大型物理模型試驗(項目編號:1212011220145)”,重點研究了預應力格構(gòu)錨固體系的抗滑機理、變形特點和破壞模式,通過研究得出如下主要成果:(1)根據(jù)相似理論確定了模型試驗相似常數(shù),對預應力格構(gòu)錨固物理模型試驗進行了設計。(2)通過全站儀監(jiān)測和位移計測試,得到了滑坡體和格構(gòu)梁位移變形情況;通過埋設在坡腳和坡體的壓力盒,對格構(gòu)錨固體系中滑體內(nèi)部應力分布規(guī)律進行了測試;通過在格構(gòu)梁底部埋設微型壓力盒,測試了格構(gòu)梁底部地基反力分布規(guī)律;通過安裝在錨頭的錨桿拉力計和在錨桿主筋上粘貼應變片,研究了預應力格構(gòu)錨固體系中錨桿受力特點、分布規(guī)律以及變形情況;通過粘貼在格構(gòu)梁鋼筋上的應變片,測試得到滑坡時格構(gòu)梁應力變化規(guī)律。(3)運用故障類型與影響分析(FMEA)方法對預應力格構(gòu)錨固體系破壞類型進行了分析,總結(jié)了體系主要破壞類型,分析了設計和施工階段加強要點,對預應力格構(gòu)錨固體系設計具有一定的參考價值。
[Abstract]:Prestressed latticed Anchorage system is an active anti-slide structure, which has the advantages of both surface slope protection and deep reinforcement, lightweight structure, simple construction, low technical risk and so on. In landslide prevention and control engineering, it can be used in coordination with anti-slide piles and other technologies, and with vegetation slope protection technology. It can not only ensure the stability of landslide, but also make effective greening of landslide. It is an efficient and economical method. Environmental protection measures for landslide treatment and reinforcement. However, since the application of this technology in engineering is not long, until now, the effective and perfect design theory has not been established, and its design is mainly based on engineering experience, so the design theory of prestressed latticed Anchorage system is studied. It has important theoretical significance and engineering application value. Based on the project of China Geological Survey "Large-scale physical Model Test of landslide Prevention and Control Lattice Anchorage Technology (Project No.: 1212011220145)", this paper focuses on the anti-sliding mechanism, deformation characteristics and failure mode of prestressed latticed Anchorage system. According to the similarity theory, the similarity constant of the model test is determined, and the physical model test of prestressed lattice Anchorage is designed. The displacement and deformation of sliding body and lattice beam are obtained, the stress distribution of sliding body in lattice Anchorage system is measured by the pressure box embedded in slope foot and slope body, and the micro pressure box is embedded at the bottom of lattice beam. The distribution law of the reaction force at the bottom of the lattice beam is tested, and the stress characteristics, distribution and deformation of the anchor rod in the prestressed latticed Anchorage system are studied by means of the anchor tension meter installed on the anchor head and the strain gauge affixed to the main reinforcement of the anchor bar. By means of the strain gauge attached to the steel bar of lattice beam, the stress variation law of lattice beam during landslide is obtained. The failure type and influence analysis are used to analyze the failure type of prestressed lattice Anchorage system, and the failure type of prestressed lattice Anchorage system is analyzed by FMEA method. The main failure types of the system are summarized, and the key points of strengthening in design and construction are analyzed, which has certain reference value for the design of prestressed lattice Anchorage system.
【學位授予單位】：長安大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P642.22

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