摘要
沙牌碾压混凝土拱坝高 130m ,具有混凝土工程量大、全年施工、坝体应力水平高、温控措施简单等特点。由于碾压混凝土在施工期的水化热温升要影响拱坝的最终应力状态 ,坝体可因温降收缩而产生贯穿性裂缝 ,从而影响拱坝的整体稳定性 ,因此 ,降低温度作用对坝体的不利影响 ,选择适合碾压混凝土施工的坝体结构分缝设计 ,对高碾压混凝土拱坝设计尤其关键。
As the heat of hydration in construction period raising temperature of roller compacted concrete imfluences final stress state of arch dam,the penetrating cracks appear on dam due to temperature lowering contraction,and it influences the integral stability of arch dam,so,the detrimental impact of temperature lowering effect on dam and the dam structure jointing design adopting proper roller compacted concrete construction are specially critical for high roller compacted concrete arch dam design.The paper mainly introduces research result of 130m high Shapai Arch Dam in such respect.
出处
《水电站设计》
2002年第1期21-25,共5页
Design of Hydroelectric Power Station
关键词
碾压混凝土
拱坝
设计
温度应力
结构缝
沙牌水电站
roller compacted concrete dam
concrete property
arch dam
structural joint
Shapai Hydroelectric Plant
