本文選題：強(qiáng)度參數(shù)標(biāo)準(zhǔn)值 + 峰值平均值　； 參考：《地下空間與工程學(xué)報》2017年S2期

【摘要】：用分項系數(shù)法來研究拱壩壩肩(拱座)穩(wěn)定性,其關(guān)鍵問題之一是如何確定地基巖體的抗剪斷強(qiáng)度參數(shù)的標(biāo)準(zhǔn)值,目前常見的四種取值方法的物理意義及數(shù)值差異都較大。從不同強(qiáng)度參數(shù)取值方法的保證率及變異系數(shù)的角度分析了四種常見方法的優(yōu)劣及實用性,并結(jié)合錦屏一級水電站與溪洛渡水電站兩個巨型工程拱座巖體強(qiáng)度參數(shù)的工程實例,論證了以參數(shù)的小值平均值作為脆性巖體抗剪斷強(qiáng)度標(biāo)準(zhǔn)值的合理性。建議在《混凝土拱壩設(shè)計規(guī)范》修編時,將脆性巖體的抗剪斷強(qiáng)度參數(shù)的小值平均值作為其標(biāo)準(zhǔn)值,并以此確定拱座穩(wěn)定分析的材料分項系數(shù)與控制指標(biāo)。
[Abstract]:The stability of arch dam abutment (abutment) is studied by the method of partial coefficient. One of the key problems is how to determine the standard value of shear strength parameter of foundation rock mass. This paper analyzes the advantages and disadvantages and practicability of four common methods from the point of view of the guarantee rate and variation coefficient of the different strength parameters, and combines the engineering examples of the rock mass strength parameters of the arch base of two giant projects of Jinping first Hydropower Station and Xiluodu Hydropower Station. The rationality of taking the mean value of parameters as the standard value of shear strength of brittle rock mass is demonstrated. It is suggested that in the revision of the Code for Design of concrete Arch dams, the average value of the small value of shear strength parameters of brittle rock mass should be taken as its standard value, and the material partial coefficient and control index of stability analysis of arch base should be determined accordingly.
【作者單位】： 中國電建集團(tuán)成都勘測設(shè)計研究院有限公司;
【分類號】：TV223

【相似文獻(xiàn)】

相關(guān)期刊論文 前1條

1 陳璇,羅華陽,王先m;拱座穩(wěn)定分析系統(tǒng)的開發(fā)[J];水力發(fā)電;1990年04期

，

本文編號：2001817