本文選題：滑坡防治 + 預(yù)應(yīng)力格構(gòu)錨固體系��； 參考：《長(zhǎng)安大學(xué)》2015年碩士論文

【摘要】：預(yù)應(yīng)力格構(gòu)錨固體系是一種主動(dòng)抗滑結(jié)構(gòu),具有表面護(hù)坡和深層加固雙重兼顧,結(jié)構(gòu)輕便,施工簡(jiǎn)單,技術(shù)風(fēng)險(xiǎn)低等優(yōu)點(diǎn)。在滑坡防治工程中可以和抗滑樁等技術(shù)組合協(xié)調(diào)使用,與植被護(hù)坡技術(shù)相配合,既可以達(dá)到保證滑坡穩(wěn)定性的目的,又可以對(duì)滑坡進(jìn)行有效的綠化,是一種高效、經(jīng)濟(jì)、環(huán)保的滑坡治理加固措施。但由于該技術(shù)在工程中應(yīng)用時(shí)間不長(zhǎng),直至目前尚未建立有效、完善的設(shè)計(jì)理論,對(duì)其設(shè)計(jì)主要還是依據(jù)工程實(shí)踐經(jīng)驗(yàn),因此對(duì)預(yù)應(yīng)力格構(gòu)錨固體系設(shè)計(jì)理論開展研究,具有重要的理論意義和工程應(yīng)用價(jià)值。本文依托中國(guó)地質(zhì)調(diào)查局項(xiàng)目“滑坡防治格構(gòu)錨固技術(shù)大型物理模型試驗(yàn)(項(xiàng)目編號(hào):1212011220145)”,重點(diǎn)研究了預(yù)應(yīng)力格構(gòu)錨固體系的抗滑機(jī)理、變形特點(diǎn)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(yàn)相似常數(shù),對(duì)預(yù)應(yīng)力格構(gòu)錨固物理模型試驗(yàn)進(jìn)行了設(shè)計(jì)。(2)通過全站儀監(jiān)測(cè)和位移計(jì)測(cè)試,得到了滑坡體和格構(gòu)梁位移變形情況;通過埋設(shè)在坡腳和坡體的壓力盒,對(duì)格構(gòu)錨固體系中滑體內(nèi)部應(yīng)力分布規(guī)律進(jìn)行了測(cè)試;通過在格構(gòu)梁底部埋設(shè)微型壓力盒,測(cè)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(jì)和在錨桿主筋上粘貼應(yīng)變片,研究了預(yù)應(yīng)力格構(gòu)錨固體系中錨桿受力特點(diǎn)、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(yīng)變片,測(cè)試得到滑坡時(shí)格構(gòu)梁應(yīng)力變化規(guī)律。(3)運(yùn)用故障類型與影響分析(FMEA)方法對(duì)預(yù)應(yīng)力格構(gòu)錨固體系破壞類型進(jìn)行了分析,總結(jié)了體系主要破壞類型,分析了設(shè)計(jì)和施工階段加強(qiáng)要點(diǎn),對(duì)預(yù)應(yīng)力格構(gòu)錨固體系設(shè)計(jì)具有一定的參考價(jià)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(xué)位授予單位】：長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P642.22

【相似文獻(xiàn)】

相關(guān)期刊論文 前3條

1 鄒勇,傅旭東;格構(gòu)錨固技術(shù)在治理滑坡中的應(yīng)用[J];巖土力學(xué);2003年S2期

2 張濤;石勝偉;謝忠勝;梁炯;杜淵;;格構(gòu)錨固體系梁下土體反力分布規(guī)律的試驗(yàn)研究[J];水文地質(zhì)工程地質(zhì);2014年03期

3 ;[J];;年期

相關(guān)博士學(xué)位論文 前1條

1 陳春利;滑坡格構(gòu)錨固防治工程大型物理模型試驗(yàn)研究[D];長(zhǎng)安大學(xué);2014年

相關(guān)碩士學(xué)位論文 前2條

1 胡兆江;滑坡防治預(yù)應(yīng)力格構(gòu)錨固技術(shù)物理模型試驗(yàn)研究[D];長(zhǎng)安大學(xué);2015年

2 梁煒;預(yù)應(yīng)力格構(gòu)錨固體系模型試驗(yàn)及數(shù)值模擬研究[D];長(zhǎng)安大學(xué);2015年

，

本文編號(hào)：1955086