| 摘要: |
| 对龙滩电站碾压砼坝的断面设计计算.提出:建基面的抗滑稳定与碾压砼层间稳定不同;龙滩碾压砼的胶凝材料用量按不同高程上、中、下三个层次进行碾压砼级配选择.上部水泥60kg/m3.粉煤灰90kg/m3;中部水泥用量65kg/m3.粉煤灰100kg/m3;底部水泥用量75kg/m3.粉煤灰105kg/m3。碾压砼的层间抗剪强度指标上部f'为1.1.c'为0.8MPa;中部f'为1.1,c'为1.0MPa;底部f'为1.1.c'为1.3MPa。碾压砼的层间稳定计算.采用不同安全系数计算式,即P=f'W/Kf'+c'B/Kc'基本组合;Kf'采用2.0;Kc'采用10;坝的宽高比在0.75~0.8之间较为理想。 |
| 关键词: 龙滩水电站 碾压混凝土坝 断面 设计 建议 |
| DOI： |
| 投稿时间：1994-04-28 |
| 基金项目: |
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| Proposition for Section Design of Rolled Concrete Dam of Longtan Hydropower Project |
|
Wu Shengguang
|
| (Guangxi Longtan Hydroelectric Project Construction Corporation, 6 Minzhu Road, Nanning, Guangxi, 530023) |
| Abstract: |
| By the calculation of design of rolled concrete dam of Longtan hydropower project, proposition is put forward as follows:Stability against sliding between rock foundation and dam interface are different from that of rolled concrete lifts interfaces. The proportion of cementitious material contents of the rolled concrete should be different on different levels of the dam. The contents of cement and fly ash in upper level are 60 kg/m3 and 90 kg/m3 respectively, 65 kg/m3 and 100 kg/m3 respectively in middle level, and 75 kg/m3 and 105 kg/m3 respectively in low level. Shear strength indexes of the rolled concrete lifts interfaces are adopted as follows:In upper level,f' is 1.1 and of is 0.8 MPa;in middle level, f' is 1.1 and c' is 1.0 MPa; In low level, f' is 1.1 and c' is 1.3 MPa. The calculation of stability of the rolled concrete lifts interfaces are conducted by A equation which contains different satety factors. The equation is P=f'W/Kf'+c'B/Kc', where Kf' is 2.0,Kc' is 10. The width/height ratio of the dam from 0.75 to 0.80 is quite ideal. |
| Key words: Longtan hydropower project rolled concrete dam section design proposal |
