水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2015年
4期
210-214
,共5页
随机变量%蒙特卡洛法%回填钢管%风险值
隨機變量%矇特卡洛法%迴填鋼管%風險值
수궤변량%몽특잡락법%회전강관%풍험치
random variables%Monte Carlo method%backfill penstock%risk value
水电工程中压力钢管的结构安全对整个电站的安全运行有着重要的影响，而水锤对管道的安全性影响非常大，因而以特吾勒水电站回填式压力钢管为例，建立了计算水锤压力风险的功能函数，利用蒙特卡洛方法计算了考虑和不考虑轴向应力两种情况下的水锤压力风险值，并具体计算分析了各随机变量对综合风险的影响，结果表明利用第四强度理论计算水锤压力风险更加符合实际，为压力钢管的设计提供了依据。
水電工程中壓力鋼管的結構安全對整箇電站的安全運行有著重要的影響，而水錘對管道的安全性影響非常大，因而以特吾勒水電站迴填式壓力鋼管為例，建立瞭計算水錘壓力風險的功能函數，利用矇特卡洛方法計算瞭攷慮和不攷慮軸嚮應力兩種情況下的水錘壓力風險值，併具體計算分析瞭各隨機變量對綜閤風險的影響，結果錶明利用第四彊度理論計算水錘壓力風險更加符閤實際，為壓力鋼管的設計提供瞭依據。
수전공정중압력강관적결구안전대정개전참적안전운행유착중요적영향，이수추대관도적안전성영향비상대，인이이특오륵수전참회전식압력강관위례，건립료계산수추압력풍험적공능함수，이용몽특잡락방법계산료고필화불고필축향응력량충정황하적수추압력풍험치，병구체계산분석료각수궤변량대종합풍험적영향，결과표명이용제사강도이론계산수추압력풍험경가부합실제，위압력강관적설계제공료의거。
The safety of steel penstock structure in hydropower projects has an important influence on the safe operation of the whole power plant ,and the water hammer has a great impact on the safety of the pentocks .Based on this ,a perfor-mance function was developed to calculate the risk caused by water hammer in the backfill penstock of Tewule hydropower station .Monte Carlo method was adopted to calculate the risk caused by water hammer with or without the consideration of axial stress ,and the effect of random variables on the comprehensive risks were analyzed .The results indicate that the fourth strength theorem is more suitable for the risk calculation .This will provide the theoretical basis for the design of steel penstocks .
