本文選題：高填方邊坡　切入點(diǎn)：穩(wěn)定性評價　出處：《西南科技大學(xué)》2015年碩士論文

【摘要】：本文以綿陽黨校高填方邊坡為研究出發(fā)點(diǎn),在充分理解邊坡工程具模糊不確定性本質(zhì)及模糊數(shù)學(xué)的基本原理基礎(chǔ)上,提出采用不確定性的方法——模糊綜合評價法來評價高填方邊坡的穩(wěn)定性,并建立針對高填方邊坡穩(wěn)定性的模糊綜合評價統(tǒng)一模型。通過對高填方邊坡的變形機(jī)理、破壞模式、穩(wěn)定性影響因素以及影響因素中填方體物理力學(xué)指標(biāo)對高填方邊坡穩(wěn)定性影響的敏感程度分析,選取11個邊坡穩(wěn)定性因素建立高填方邊坡模糊綜合評價統(tǒng)一模型。根據(jù)最大隸屬度原則,對定量因素選擇嶺形分布的隸屬函數(shù),定性因素運(yùn)用梯形分布的隸屬函數(shù),采用層次分析法確定各作用因素的權(quán)重值。最后采用高填方邊坡穩(wěn)定性模糊綜合評價模型評價高填方邊坡的穩(wěn)定性等級。利用新評價模型與傳統(tǒng)的評價方法——極限平衡法、數(shù)值模擬法對綿陽黨校高填方邊坡的穩(wěn)定性分別進(jìn)行評價,將三種評價方法所得結(jié)果進(jìn)行對比分析得出:高填方邊坡穩(wěn)定性評價采用模糊綜合評價方法更為簡潔、方便,結(jié)果與邊坡實(shí)際狀態(tài)更為接近,對同類高填方邊坡的穩(wěn)定性評價具有參考價值。
[Abstract]:This paper takes the high fill slope of Mianyang Party School as the starting point and fully understands the nature of fuzzy uncertainty and the basic principle of fuzzy mathematics in slope engineering. A fuzzy comprehensive evaluation method is proposed to evaluate the stability of high fill slope, and a unified fuzzy comprehensive evaluation model for the stability of high fill slope is established. Through the deformation mechanism of high fill slope, the failure mode is established. The influence factors of stability and the sensitivity of the physical and mechanical indexes of filling body to the stability of high fill slope are analyzed. The fuzzy comprehensive evaluation model of high fill slope is established by selecting 11 slope stability factors. According to the principle of maximum membership degree, the membership function of ridge distribution is selected for quantitative factors, and the membership function of trapezoid distribution is used for qualitative factors. The weight of each factor is determined by analytic hierarchy process (AHP). Finally, the fuzzy comprehensive evaluation model of high fill slope stability is used to evaluate the stability grade of high fill slope. The new evaluation model and the traditional evaluation method-limit equilibrium method are used to evaluate the stability of high fill slope. The stability of the high fill slope of Mianyang Party School is evaluated by numerical simulation method. The results obtained from the three evaluation methods are compared and analyzed. The results show that the fuzzy comprehensive evaluation method is more simple and convenient to evaluate the stability of the high fill slope. The results are closer to the actual state of the slope and have reference value for the stability evaluation of the similar high fill slope.
【學(xué)位授予單位】：西南科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TU43

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

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本文編號：1695397