摘要
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。
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.
出处
《水利与建筑工程学报》
2015年第4期210-214,共5页
Journal of Water Resources and Architectural Engineering
关键词
随机变量
蒙特卡洛法
回填钢管
风险值
random variables
Monte Carlo method
backfill penstoek
risk value
作者简介
张静（1990-），女，四川安岳人，硕士研究生，研究方向为水力可靠度理论。E-mail：18099175425@163．com
通讯作者：王长新（1957-），男，辽宁抚顺人，教授，博士生导师，主要从事水工水力学、河流泥沙和水力可靠度理论方面的研究和教学工作。E-mail：wangcx@xjau．edu．cn
