岩土力学
巖土力學
암토역학
ROCK AND SOIL MECHANICS
2014年
7期
1979-1986
,共8页
桂勇%邓通发%罗嗣海%周军平
桂勇%鄧通髮%囉嗣海%週軍平
계용%산통발%라사해%주군평
GeoStudio%蒙特卡罗%二元指标体系%边坡稳定%降雨%可靠度
GeoStudio%矇特卡囉%二元指標體繫%邊坡穩定%降雨%可靠度
GeoStudio%몽특잡라%이원지표체계%변파은정%강우%가고도
GeoStudio%Monte Carlo%dual index system%slope stability%rainfall%reliability
边坡是一个具有明显不确定性、模糊性和时变性的系统,安全系数及可靠度理论在边坡稳定评价上各有优缺点。二元体系是基于确定性指标(安全系数)和不确定指标(可靠度)建立的边坡稳定综合评价指标体系,兼有二者的优点,具有重要的理论意义和实践价值。考虑到边坡材料指标具有区间分布及稳定边坡的安全系数不能小于其临界值的特点,对纯数学理论模型进行修正,提出了一种更加符合工程实际的边坡稳定二元评价体系,同时选取蒙特卡罗模拟法,将该二元评价体系融入GeoStudio软件,借助GeoStudio软件强大的计算能力,形成一套完整而高效的边坡稳定二元指标分析方法。采用该方法进行了降雨条件下花岗岩残坡积土边坡稳定性分析,得出了有益的结论,验证了该方法的可行和高效。
邊坡是一箇具有明顯不確定性、模糊性和時變性的繫統,安全繫數及可靠度理論在邊坡穩定評價上各有優缺點。二元體繫是基于確定性指標(安全繫數)和不確定指標(可靠度)建立的邊坡穩定綜閤評價指標體繫,兼有二者的優點,具有重要的理論意義和實踐價值。攷慮到邊坡材料指標具有區間分佈及穩定邊坡的安全繫數不能小于其臨界值的特點,對純數學理論模型進行脩正,提齣瞭一種更加符閤工程實際的邊坡穩定二元評價體繫,同時選取矇特卡囉模擬法,將該二元評價體繫融入GeoStudio軟件,藉助GeoStudio軟件彊大的計算能力,形成一套完整而高效的邊坡穩定二元指標分析方法。採用該方法進行瞭降雨條件下花崗巖殘坡積土邊坡穩定性分析,得齣瞭有益的結論,驗證瞭該方法的可行和高效。
변파시일개구유명현불학정성、모호성화시변성적계통,안전계수급가고도이론재변파은정평개상각유우결점。이원체계시기우학정성지표(안전계수)화불학정지표(가고도)건립적변파은정종합평개지표체계,겸유이자적우점,구유중요적이론의의화실천개치。고필도변파재료지표구유구간분포급은정변파적안전계수불능소우기림계치적특점,대순수학이론모형진행수정,제출료일충경가부합공정실제적변파은정이원평개체계,동시선취몽특잡라모의법,장해이원평개체계융입GeoStudio연건,차조GeoStudio연건강대적계산능력,형성일투완정이고효적변파은정이원지표분석방법。채용해방법진행료강우조건하화강암잔파적토변파은정성분석,득출료유익적결론,험증료해방법적가행화고효。
Slope is a system with visible uncertainty, illegibility and time-varying characteristics. Safety factor and reliability theory have both advantages and disadvantages in slope stability evaluation. Dual index system is a slope stability comprehensive evaluation system which is established based on a specified index (safe factor) and an uncertain index (reliability). It has both benefits of the indices, and important theory significance and practical value. Considering the interval distribution of material indices and the stable slope's safety factor cannot be less than the critical value, the pure mathematics model is modified. A more realistic dual index system of slope stability is proposed. At the same time, the Monte Carlo simulation method is selected. The dual index system is blent in GeoStudio software. With the help of the powerful computing ability of GeoStudio, a complete and efficient dual index analysis method of slope stability is formed. This method has been applied to analyzing stability of a slope of granite residual soil deposits under rainfall condition. And then some useful conclusions are drawn. It is proved that the method is feasible and efficient.