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  本文關鍵詞：公路邊坡表面變形監(jiān)測及工程應用　出處：《重慶交通大學》2015年碩士論文　論文類型：學位論文

  更多相關文章： 激光測距 表面變形監(jiān)測 數據分析 工程應用

【摘要】：隨著我國基礎建設的不斷完善,公路交通的不斷發(fā)展,高等級公路、新建公路及改建公路過程中難免產生大量的邊坡,但由于受自然地質構造和人工活動的影響,邊坡失穩(wěn)破壞日趨增加。如何對邊坡進行監(jiān)測分析其穩(wěn)定性,最終對邊坡變形趨和失穩(wěn)破壞勢進行預測,從而降低或者避免邊坡失穩(wěn)破壞帶來的人員傷亡以及經濟損失顯得非常重要。論文的主要研究內容:采用激光測距技術進行了邊坡表面位移變形監(jiān)測,基于位移監(jiān)測結果建立數學模型分析邊坡變形趨勢,結合GTS軟件模擬邊坡位移動態(tài)以綜合分析邊坡穩(wěn)定性。主要研究成果及工作如下:①對比分析基于激光測距監(jiān)測技術與其他變形監(jiān)測技術的優(yōu)缺點,得到基于激光測距技術在公路邊坡表面變形監(jiān)測中更具優(yōu)勢。②歸納了公路邊坡的分類、變形破壞影響因素以及破壞機理,對公路邊坡變形破壞特征進行了系統(tǒng)的總結。利用邊坡的基本信息結合日常檢查分析邊坡表面變形風險。③利用有限元軟件GTS模擬邊坡表面變形位移以及改進的強度折減法計算出不同折減系數對應模擬位移值,結合實際位移監(jiān)測值進行對比分析。④根據變形監(jiān)測數據建模分析預測變形趨勢以及運用數值模擬分析了邊坡安全系數并結合邊坡工程的實際情況綜合分析了邊坡狀態(tài)。研究結果表明,將邊坡表面變形位移與有限元數值模擬分析方法相結合,可以根據位移值分析邊坡動態(tài),并結合數學模型分析變形趨勢能很好的應用在邊坡的穩(wěn)定性分析中。
[Abstract]:With the continuous improvement of our country's infrastructure and the continuous development of highway traffic, a large number of slopes are inevitably produced in the process of high-grade highway, new highway and highway reconstruction. However, due to the influence of natural geological structure and artificial activities, slope instability is increasing day by day. How to monitor and analyze the slope stability, and finally predict the slope deformation trend and instability failure potential. Therefore, it is very important to reduce or avoid the casualties and economic losses caused by slope failure. The main research content of this paper is: laser ranging technology is used to monitor the displacement and deformation of slope surface. Based on the results of displacement monitoring, a mathematical model is established to analyze the trend of slope deformation. Combined with GTS software to simulate slope displacement dynamics to comprehensively analyze slope stability. The main research results and work are as follows: 1. The advantages and disadvantages of laser ranging monitoring technology and other deformation monitoring technology are compared and analyzed. Based on laser ranging technology in monitoring the surface deformation of highway slope, the classification of highway slope, the influence factors of deformation and failure and the failure mechanism are summarized. 2. The characteristics of deformation and failure of highway slope are systematically summarized. The risk of slope surface deformation is analyzed by using the basic information of slope combined with daily inspection. 3. 3. The finite element software GTS is used to simulate the surface deformation displacement of slope and its modification. The forward strength reduction method calculates different reduction coefficients corresponding to the simulated displacement values. Based on the data of deformation monitoring, the deformation trend is analyzed and the slope safety factor is analyzed by numerical simulation, and the edge is analyzed synthetically according to the actual situation of slope engineering. Slope state. The results show that. By combining the surface deformation of slope with the finite element numerical simulation method, the slope dynamics can be analyzed according to the displacement value, and the deformation trend can be well applied to the stability analysis of the slope combined with the mathematical model.
【學位授予單位】：重慶交通大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U416.14

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