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Safety evaluation and the static-dynamic coupling analysis of counter-arched slab in plunge pool 总被引:1,自引:0,他引:1
The stability of plunge pool slab of drainage structure is crucial to energy dissipation, but the working conditions of counter-arched
slab are very complex and its stress procedure is considerably nonlinear and coupling. Therefore, a nonlinear static and dynamic
coupling method to analyze the counter-arched slab configuration is put forward, which can reflect the coupling of dynamic
loads, slab, anchor bars, groundwork and abutment as well as the dynamic procedure of instability. Various nonlinear factors
and static-dynamic coupling are taken into consideration, and the working conditions, stress mechanism, dynamic instability
procedure and influential instability factors are revealed. The proposed method thus provides a comprehensive safety evaluation
method of plunge pool, which further provides an important theoretical basis for engineering design of counter-arched slab
in plunge pool.
Supported by the National Science Fund for Distinguished Young Scholars (Grant No. 50725929) and the National Natural Science
Foundation of China (Grant Nos. 50539060, 50679052, 50779044) 相似文献
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介绍了现有双塔加压、单塔加压侧线抽出、单塔低压全抽出等酸性水汽提工艺的主要特点,指出了现有工艺存在经汽提后的净化水作为回用水时带碱及被过度汽提等问题,提供了一种新型的带液相侧线抽出的酸性水汽提方法,即在酸性水汽提塔下部位置自上而下依次设置1~#、2~#无碱回用水线及碱液注入线,1~#无碱回用水中NH_3、H_2S含量相对较高,可用作加氢裂化或催化裂化等装置的回用水;2~#无碱回用水中NH_3、H_2S含量相对较低,可用作常减压、加氢精制等装置的回用水。该方法针对各装置对回用水不同的质量要求,采用不同的汽提深度,避免不必要的汽提蒸汽浪费,从而可实现在回用水中不含碱液的前提下大幅度降低能耗的目标。 相似文献
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李保源 《纺织高校基础科学学报》1992,(3)
运用Polyflow有限元计算软件包分析了非牛顿流体在牵引辊表面的流场.流体模型采用幂律流体和Maxwell流体.结果表明:非牛顿流体的剪切稀化特性明显压抑涡的形成;而其弹性和拉伸特性则导致大涡的产生. 相似文献
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蘑菇湖水库放水涵洞修补处理措施及效果 总被引:1,自引:0,他引:1
结合具体工程实例,阐述了用高压灌浆工艺对涵洞裂缝进行化学灌浆,用聚氨酯砂浆对伸缩缝进行修补,用膨胀螺栓固定钢丝网涂抹丙乳砂浆工艺对涵洞洞身进行防冲耐磨性处理的过程,以使放水涵洞达到正常使用功能,积累了水库涵洞的修补处理经验. 相似文献
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分析了蘑菇湖水库泄水涵洞下游消能的现状及存在的问题,通过对垂直边墙水平扩散消力池的水力计算和水工模型试验,提出了在消力池尾部加消力槛的改进措施,经实际运用,得到了满意的消能效果。 相似文献