本文選題：三維穩(wěn)定性分析 + 擋土墻加固�。� 參考：《江西理工大學(xué)》2015年碩士論文

【摘要】：隨著國家西部大開發(fā)戰(zhàn)略的繼續(xù)推進(jìn),高速公路和鐵路、市政工程等基礎(chǔ)建設(shè)發(fā)展迅速,其帶來的一系列邊坡穩(wěn)定性問題已經(jīng)成為事關(guān)工程成敗的重要因素。實(shí)際工程中,邊坡失穩(wěn)多數(shù)是呈現(xiàn)三維破壞狀態(tài),對(duì)其進(jìn)行三維穩(wěn)定性分析,可以獲得更加真實(shí)、符合實(shí)際的分析結(jié)果,以及減少不必要的損失與浪費(fèi)。對(duì)于不穩(wěn)定邊坡的處理,常用的措施是采取相應(yīng)的支擋結(jié)構(gòu)進(jìn)行加固處理。擋土墻以其結(jié)構(gòu)形式簡單、施工方便、造價(jià)低廉和便于就地取材等諸多優(yōu)點(diǎn)在工程中得到了廣泛的應(yīng)用。本文針對(duì)任意形狀的滑裂面,基于最小勢(shì)能原理,建立了三維邊坡穩(wěn)定性分析方法,并在該分析方法的基礎(chǔ)上進(jìn)一步提出了擋土墻加固邊坡的三維最小勢(shì)能分析法。文中的主要研究內(nèi)容包括以下幾個(gè)方面:(1)針對(duì)任意形狀的滑裂面,把滑體作為一個(gè)整體,建立三維計(jì)算模型,得到滑體的總勢(shì)能,基于最小勢(shì)能原理,求得滑體位移,通過選擇合理的安全系數(shù)計(jì)算方式,提出了三維邊坡最小勢(shì)能穩(wěn)定性分析方法。(2)對(duì)于擋土墻加固邊坡,建立三維計(jì)算模型時(shí)考慮了擋土墻與土體接觸面之間所儲(chǔ)存的勢(shì)能,基于以上建立的三維最小勢(shì)能法,提出了擋土墻加固邊坡三維最小勢(shì)能穩(wěn)定性分析方法。(3)為了方便分析與計(jì)算,基于以上建立的分析方法,運(yùn)用MATLAB軟件,將計(jì)算模塊與界面模塊相結(jié)合,開發(fā)了邊坡以及擋土墻加固邊坡的三維穩(wěn)定性分析程序。(4)將本文提出的方法應(yīng)用于擋土墻加固公路路塹邊坡和擋土墻加固基坑工程實(shí)例中,驗(yàn)證了本文所提出方法的工程實(shí)用性。
[Abstract]:With the development of national western development strategy and the rapid development of highway, railway, municipal engineering and other infrastructure, a series of slope stability problems have become an important factor related to the success or failure of the project. In practical engineering, the slope instability is mostly presented in the state of three dimensional failure. The analysis of the three dimensional stability of the slope can get more realistic, accord with the actual analysis results, and reduce the unnecessary loss and waste. For the treatment of unstable slope, the common measure is to adopt the corresponding retaining structure to reinforce the slope. Retaining wall has been widely used in engineering with its advantages such as simple structure, convenient construction, low cost and easy to use local materials. In this paper, based on the principle of minimum potential energy, a three-dimensional slope stability analysis method is established for a sliding surface with arbitrary shape. Based on this method, a three-dimensional minimum potential energy analysis method for retaining wall strengthening slope is proposed. The main research contents in this paper include the following aspects: 1) for the sliding surface of arbitrary shape, the sliding body is taken as a whole, and the three-dimensional calculation model is established, and the total potential energy of the sliding body is obtained. Based on the principle of minimum potential energy, the displacement of the sliding body is obtained. By selecting a reasonable calculation method of safety factor, the method of minimum potential energy stability analysis of three-dimensional slope is put forward. The potential energy stored between retaining wall and soil interface is taken into account when the three-dimensional calculation model is established for the reinforcement of slope with retaining wall. Based on the three dimensional minimum potential energy method established above, a method for analyzing the stability of the three dimensional minimum potential energy of retaining wall reinforced slope is put forward. In order to facilitate the analysis and calculation, the MATLAB software is used based on the above analysis method. Combining the calculation module with the interface module, the three-dimensional stability analysis program of slope and retaining wall reinforced slope is developed. The method proposed in this paper is applied to the engineering example of retaining wall strengthening highway cutting slope and retaining wall strengthening foundation pit. The engineering practicability of the proposed method is verified.
【學(xué)位授予單位】：江西理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU43;TU476.4

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