本文選題：邊坡　切入點(diǎn)：RFPA軟件　出處：《大連理工大學(xué)》2015年碩士論文

【摘要】：隨著國(guó)民經(jīng)濟(jì)的高速增長(zhǎng),建筑工程及其他建設(shè)項(xiàng)目更加高速地發(fā)展。深基坑工程作為各種建設(shè)工程的前期和基礎(chǔ)性工作,對(duì)于建筑工程能否順利實(shí)施起到?jīng)Q定性的作用。通過(guò)工程技術(shù)人員和科技工作者共同努力,以及計(jì)算機(jī)技術(shù)已達(dá)到一個(gè)新的水平,工程質(zhì)量也不斷提高。本文以天津市某銀行綜合業(yè)務(wù)樓項(xiàng)目為模型,研究深基坑開(kāi)挖后的邊坡變形問(wèn)題。通過(guò)RFPA軟件模擬與實(shí)際觀測(cè)進(jìn)行對(duì)比、得以更加準(zhǔn)確詳細(xì)地分析。這樣,有助于積累類(lèi)似工程的經(jīng)驗(yàn),進(jìn)而應(yīng)用科學(xué)的方法進(jìn)行現(xiàn)代化建設(shè)。通過(guò)RFPA軟件進(jìn)行模擬,直觀地得到坡體滑移破壞面,并求得安全系數(shù)。由即得的邊坡潛在破壞面和穩(wěn)定安全系數(shù)對(duì)基坑工程穩(wěn)定性進(jìn)行判斷,評(píng)定支護(hù)措施發(fā)揮的作用。經(jīng)過(guò)與實(shí)際監(jiān)測(cè)情況的對(duì)比,判斷RFPA軟件模擬對(duì)于邊坡穩(wěn)定性分析是否實(shí)用。本文主要采用RFPA強(qiáng)度折減法的基本原理,這類(lèi)方法具有非常突出的優(yōu)點(diǎn),不必預(yù)先假設(shè)滑動(dòng)破壞面的方位和形狀,采用不斷降低巖土體自身強(qiáng)度的方式,最終是坡體模型發(fā)生破壞,一般發(fā)生在邊坡模型強(qiáng)度最薄弱的環(huán)節(jié),用此種方法來(lái)確定遭受剪切力破壞的部位,最終根據(jù)相應(yīng)的剪切滑動(dòng)面來(lái)分析對(duì)應(yīng)的邊坡穩(wěn)定安全系數(shù)。因此,以此項(xiàng)目的地質(zhì)勘察報(bào)告的數(shù)據(jù)作為參數(shù)的來(lái)源,以基坑的變形觀測(cè)報(bào)告的實(shí)際數(shù)據(jù)作為基準(zhǔn),根據(jù)現(xiàn)場(chǎng)參數(shù)進(jìn)行RFPA軟件模擬。經(jīng)過(guò)模擬邊坡支護(hù)與無(wú)邊坡支護(hù)的邊坡失穩(wěn)過(guò)程,有助于加深對(duì)邊坡破壞過(guò)程的理解。通過(guò)理論與具體施工項(xiàng)目的比較,進(jìn)行經(jīng)驗(yàn)的積累,有助于類(lèi)似的項(xiàng)目工作更加順利地開(kāi)展,進(jìn)而節(jié)約整個(gè)社會(huì)的時(shí)間成本和經(jīng)濟(jì)成本。
[Abstract]:With the rapid growth of the national economy, construction projects and other construction projects are developing at a higher speed. Play a decisive role in the smooth implementation of construction projects. Through the joint efforts of engineering technicians and scientific and technological workers, and computer technology has reached a new level, The engineering quality is also improving continuously. This paper takes a comprehensive business building project of a bank in Tianjin as a model to study the problem of slope deformation after deep foundation pit excavation. The simulation results are compared with the actual observation by RFPA software. In this way, it will be helpful to accumulate experience of similar engineering and to use scientific methods to carry out modernization construction. The slip failure surface of slope body can be obtained intuitively by simulation with RFPA software. The safety factor is obtained. The stability of foundation pit engineering is judged by the potential failure surface and the stability factor of the slope, and the function of supporting measures is evaluated. In this paper, the basic principle of RFPA strength reduction method is used to determine whether the RFPA software simulation is useful for slope stability analysis. This kind of method has very outstanding advantages and does not need to presuppose the orientation and shape of the sliding failure surface. In order to reduce the strength of rock and soil continuously, the failure of slope model is the final one, which usually occurs in the weakest link of slope model. This method is used to determine the site of shear failure. Finally, according to the corresponding shear slip surface, the corresponding slope stability safety factor is analyzed. Therefore, the data of the geological survey report of the project is taken as the source of the parameters, and the actual data of the deformation observation report of the foundation pit is taken as the benchmark. According to the field parameters, the RFPA software is used to simulate the slope failure process, which is helpful to the understanding of the slope failure process. Through the comparison between the theory and the concrete construction project, the experience is accumulated. Help similar projects to work more smoothly, thereby saving the time and economic costs of the whole society.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：P642.22;TU473

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