浅谈大坝混凝土强度标准  

Elementary discussion of main dam concrete strength standard

作　　者：韦卓信[1] 

机构地区：[1]广西水利电力勘测设计研究院,广西南宁530023

出　　处：《广西水利水电》2006年第2期6-9,共4页Guangxi Water Resources & Hydropower Engineering

摘　　要：现行的两本《混凝土重力坝设计规范》(DL5108-1999)和(SL319-2005)共存的情况以往少见,而且混凝土强度标准分别采用强度等级(C)和强度标号(R)。在大坝混凝土设计和施工中究竟采用哪种强度标准?通过对两者的概念及相互关系进行分析,结合工程实际认为:同样是采用28 d龄期的水工结构混凝土采用混凝土强度等级(C)是合适的,但龄期为90 d或180 d的大坝混凝土宜采用混凝土强度标号(R)。Two versions of Concrete Gravity Dam Design Standard, DL5108-1999 and SL319-2005 are both in effect at present, which is seldom seen in the past. Concrete strength are shown in strength level （C） and strength label （R） respectively in two standards. Which standard shall we used in design and construction of main dam concrete？ Based on an analysis of the conceptions and eorrelation of two standards and combined with engineering practice, it is concluded that concrete strength level （C） shall be adopted for hydraulic structure concrete of 28d age-period while concrete strength label （R） shall be used for main dam eoncrete of 90d or 180d ageperiod.

关 键 词：大坝混凝土 强度等级(C) 强度标号(R) 应用 

分 类 号：TV431[水利工程—水工结构工程]