本文選題：關(guān)鍵滑動(dòng)面 + 最危險(xiǎn)滑動(dòng)面��； 參考：《長(zhǎng)沙理工大學(xué)》2013年碩士論文

【摘要】：在邊坡工程中，通常是通過(guò)計(jì)算分析確定具有最小安全系數(shù)的最危險(xiǎn)滑動(dòng)面，進(jìn)而對(duì)邊坡的穩(wěn)定性進(jìn)行評(píng)價(jià)，并做出相應(yīng)的處治方案。然而很多工程實(shí)例表明，僅憑最危險(xiǎn)滑動(dòng)面往往不能真實(shí)地表示邊坡的穩(wěn)定性程度，也不能充分滿足支護(hù)設(shè)計(jì)的要求。眾所周知，邊坡加固方案設(shè)計(jì)是根據(jù)滑坡推力的大小來(lái)進(jìn)行的，然而，最危險(xiǎn)滑動(dòng)面計(jì)算得到的滑坡推力并不一定就是該邊坡存在的最大滑坡推力；同時(shí)，邊坡處治涉及到處治范圍，若僅針對(duì)最危險(xiǎn)滑動(dòng)面進(jìn)行加固處治而不考慮處治范圍，就不能保證處治效果。 本文針對(duì)邊坡工程研究現(xiàn)狀，提出了使用一組在邊坡穩(wěn)定性評(píng)價(jià)和處治中起控制作用的潛在滑動(dòng)面來(lái)解決邊坡穩(wěn)定性評(píng)價(jià)及邊坡處治問(wèn)題。本文將這一組在邊坡處治中起著控制作用的潛在滑動(dòng)面定義為關(guān)鍵滑動(dòng)面，并在提出關(guān)鍵滑動(dòng)面概念的基礎(chǔ)上，以土質(zhì)邊坡問(wèn)題為研究對(duì)象，展開了如下研究： 1、針對(duì)目前在邊坡工程中通常僅憑最危險(xiǎn)滑動(dòng)面進(jìn)行穩(wěn)定性分析和處治設(shè)計(jì)不足，提出了關(guān)鍵滑動(dòng)面的概念。關(guān)鍵滑動(dòng)面共包括三種滑動(dòng)面，即反映邊坡穩(wěn)定程度的最危險(xiǎn)滑動(dòng)面，邊坡處治時(shí)控制滑坡推力設(shè)計(jì)的最大滑坡推力滑動(dòng)面和反映邊坡潛在滑動(dòng)區(qū)域的最深滑動(dòng)面。 2、研究了最大滑坡推力滑動(dòng)面的實(shí)現(xiàn)方法。假定滑動(dòng)面為圓弧滑動(dòng)面，采用固定模式搜索法進(jìn)行最危險(xiǎn)滑動(dòng)面的搜索，并采用不平衡推力法計(jì)算所有潛在滑動(dòng)面的剩余下滑力。通過(guò)對(duì)所有潛在滑動(dòng)面對(duì)應(yīng)的剩余下滑力的比較，，找出最大滑坡推力滑動(dòng)面。 3、應(yīng)用c++的微軟基礎(chǔ)類庫(kù)（MFC），在vs2010環(huán)境下編制了面向?qū)ο蟮倪吰路�(wěn)定性分析程序——基于關(guān)鍵滑動(dòng)面的邊坡穩(wěn)定性分析程序。本程序共包括模型建立和參數(shù)設(shè)置、最危險(xiǎn)滑動(dòng)面搜索模塊和擴(kuò)展模塊三大模塊，其中擴(kuò)展模塊又包括最大滑坡推力滑動(dòng)面模塊和最深滑動(dòng)面模塊。 4、分別采用研制的程序和商業(yè)軟件對(duì)經(jīng)典算例進(jìn)行了計(jì)算分析，驗(yàn)證了程序的正確性。對(duì)三種關(guān)鍵滑動(dòng)面之間的關(guān)系進(jìn)行了比較，并論證了最大滑坡推力滑動(dòng)面和最深滑動(dòng)面在邊坡處治中的工程意義。 5、在編制邊坡穩(wěn)定性分析程序時(shí)，根據(jù)在邊坡穩(wěn)定性分析中滑動(dòng)面的數(shù)據(jù)結(jié)構(gòu)特點(diǎn)，本文選擇了高效的容器結(jié)構(gòu)存儲(chǔ)滑動(dòng)面的數(shù)據(jù)。
[Abstract]:In slope engineering, the most dangerous sliding surface with minimum safety factor is usually determined by calculation and analysis, and then the slope stability is evaluated and the corresponding treatment scheme is made. However, many engineering examples show that only the most dangerous sliding surface can not truly express the stability of the slope, nor can it fully meet the requirements of the support design. As we all know, the design of slope reinforcement scheme is based on the magnitude of landslide thrust. However, the landslide thrust calculated by the most dangerous sliding surface is not necessarily the maximum landslide thrust existing in the slope; at the same time, Slope treatment involves the scope of treatment. If only the most dangerous sliding surface is strengthened and the scope of treatment is not considered, the treatment effect can not be guaranteed. In this paper, a set of potential sliding surfaces which play a controlling role in the evaluation and treatment of slope stability are proposed to solve the problem of slope stability evaluation and slope treatment. In this paper, a group of potential slip surfaces which play a controlling role in slope treatment are defined as critical sliding surfaces. Based on the concept of critical sliding surfaces, the problem of soil slopes is considered as an object of study. The following researches are carried out: 1. Aiming at the problem of stability analysis and design of the most dangerous sliding surface in slope engineering at present, the concept of critical sliding surface is put forward. The critical slip surface consists of three sliding surfaces, the most dangerous sliding surface, which reflects the stability of the slope. The maximum landslide thrust sliding surface and the deepest sliding surface reflecting the potential sliding area of the slope are controlled when the slope is treated. 2. The realization method of the maximum landslide thrust sliding surface is studied. Assuming that the sliding surface is an arc sliding surface, the most dangerous sliding surface is searched by fixed mode search method, and the residual sliding force of all potential sliding surfaces is calculated by unbalanced thrust method. By comparing the residual sliding forces corresponding to all potential sliding surfaces, To find out the maximum landslide thrust sliding surface. 3. Using the Microsoft Foundation Class Library (MFC) of c, an object-oriented slope stability analysis program based on critical sliding surface is developed under vs2010 environment. This procedure includes three modules: model building and parameter setting, most dangerous sliding surface searching module and extending module. The extension module also includes the maximum landslide thrust sliding surface module and the deepest sliding surface module. 4. The program and commercial software are used to calculate and analyze the classic examples to verify the correctness of the program. The relationship between the three key sliding surfaces is compared, and the engineering significance of the maximum landslide thrust sliding surface and the deepest sliding surface in slope treatment is demonstrated. 5. When compiling the slope stability analysis program, According to the data structure characteristics of sliding surface in slope stability analysis, an efficient container structure is selected to store sliding surface data.
【學(xué)位授予單位】：長(zhǎng)沙理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU753.8

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