【摘要】 钢衬钢筋混凝土压力管道应用于大型水电站中,一般在设计时都允许混凝土出现裂缝,但对裂缝宽度进行了限制,而实际工程实测值往往超过计算值.从裂缝宽度计算看出,董哲仁方法存在不足 如用改进后的董哲仁法对三峡钢衬钢筋混凝土压力管道混凝土裂缝进行计算,其结果更接近实测值.更多还原

【Abstract】 Steel lined reinforced concrete penstocks are used in former Soviet Union and China. The concrete cracks are permitted in design of penstocks, but the crack widths are not permitted to exceed the limited value. In the real projects all of the measured values exceed the calculated values. Hence, in this paper the problem of calculating concrete crack width is deliberated.更多还原