Methods of calculating reinforced-concrete members of power structures

Power Technology and Engineering -     

Investigation of concrete and reinforced-concrete members of hydraulic structures

Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 6, pp. 1–3, June, 1994.     

Methods of calculating massive reinforced-concrete members and hydraulic structures

Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 5, pp. 21–24, May, 1990.     

Development of methods of calculating reinforced-concrete members in Russian standards

Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 6, pp. 24–26, June, 1994.     

钻芯法检测农田水利工程预制薄壁构件混凝土强度探讨

钻芯法检测混凝土强度时,骨料粒径决定了芯样的直径,芯样直径最少要为2倍以上骨料粒径.以农田水利工程薄壁构件为例,研究20mm细石粒径骨料的预制构件混凝土实体强度检测方法,在尽量减少骨料粒径因素的前提下,研究了40mm芯样直径与28d龄期150mm试块强度的关系,并推定了该直径芯样的对数函数关系式及相应曲线.可为混凝土预制构件小直径芯样强度检测方法提供一定的借鉴.     

混凝土动态双轴强度探讨

本文根据单轴和等压双轴的动态强度的特性,提出用一抛物线方程和双曲线方程来模拟拉-压区和压-压区的强度变化规律,方程的参数是单轴动态强度的函数.在拉-压区和压-压区分别推导出混凝土的动态强度.建立了完整的混凝土静、动态双轴强度包络线.为了得到一致的动态强度准则,建立了统一静态应变率下的混凝土动态单轴抗压强度和动态单轴抗拉强度与应变率的关系式,并根据已有的试验结果,建立了类似的等压双轴动态强度变化关系式,以用于双轴动态强度预测.根据本文方法得到的包络线在拉-压区和压-压区连续光滑,预测的动态双轴强度与已有的试验结果吻合较好,可作为工程实际应用的参考值.     

Formwork in the construction of reinforced-concrete beds of drilling platforms

Methods are presented for the slip forming of structures erected for the power-generation complex. __________ Translated from Gidrotekhnicheskoe Stroitel’stvo, No. 3, March 2007, pp. 2–10.