自密实堆石混凝土在大坝尾留续建工程中的应用  

Application of self compacting concrete at main dam continued project of Tongluogou Reservoir

作　　者：查演 陈文斌[2] ZHA Yan;Chen Wen-bin(Gui zhou Pu hua Construction Co.,Ltd.,Guiyang 550002 ,China;Northwest A&F University,Yangling 712100,China)

机构地区：[1]贵州普华建设工程有限公司,贵州贵阳550002 [2]西北农林科技大学,陕西杨凌712100

出　　处：《广西水利水电》2017年第4期34-37,共4页Guangxi Water Resources & Hydropower Engineering

基　　金：国家科技支撑计划项目(2015SXC21P35);中央高校基本科研业务费专项资金(37809506)

摘　　要：铜锣沟水库尾留续建工程由于施工现场地形条件限制,加上施工工期紧张、施工质量监控难度较大等,很难满足原常规堆石混凝土施工工艺技术要求。经现场勘探,综合考虑大坝结构现状、现场施工条件、施工工期和综合投资效益等因素,经技术、经济等方面的优化比选,优选具有较强流动性和自密实性的自密实堆石混凝土技术,以缩短施工工期,提高施工质量。施工完成后,自密实堆石混凝土结构块体测试结果表明:结构体整体完整性、密实性和抗渗性均较高,块石与混凝土粘结良好,质地均匀,具有较好抗压和防渗性能。The construction of main dam continued project of Tongluogou Reservoir has problems such as limited topographical conditions,short construction period,difficulties in supervision and control of construction quality,so it is difficult to satisfy the technical requirements for conventional rockfill concreting construction.According to the field survey achievements and taking into consideration the multiple factors including current structural status of main dam,site construction conditions,construction period,cost and benefits,after a comparison in respects of technical and economical indexes,self compacting rockfill concrete was adopted since it has strong fluidity and self compactness,and requires shorter construction period with good construction quality.After construction was completed,self compacting concrete structural body were tested and the testing results demonstrate the structural body have relatively high overall integrity,compactness and impermeability;stone is well adhere to concrete and the property is homogeneous,rendering good compressive strength and impermeability.

关 键 词：自密实混凝土 水化热 堆石体 铜锣沟水库 

分 类 号：TV431[水利工程—水工结构工程]