【作者】 郑铎； 吴世伟；

【Author】 Zheng Duo (Jilin Hydraulic Reseach Institute) Wu Shiwei (Hohai Univercity)

【机构】 吉林水科所； 河海大学；

【摘要】 本文首先通过安全系数 K 的公式建立求解土坝稳定可靠指标β的力学模型。其次通过搜索最小 K 值与最小的β值,得出 K 与β在某范围内几乎呈线性关系,因而求β_m（?）时,可先求 K_m（?）,然后利用其对应的圆弧求得。这样既可保证计算精度,又可减少计算工作量。最后用本方法较核一个土坝的稳定可靠度。本文还探讨各种随机变量对β的敏感性问题。更多还原

【Abstract】 In this paper,firstly a model of mechanics for finding reliability index β of soil dam stability is given.Then by searching K_■ and β_■,we found that the relationship between safety K and β is approximately linear.So it becomes easily to find β_■ from the circular slip surface corresponding to K_■. Finally the stability of a soildam is calibrated by the method and good result is obtained.The sensitivety of the variables to safety of the dam is also studied.更多还原