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分别对串联裸管和带三控制杆串联立管进行室内水槽试验,使用DHDAS软件采集立管横向振幅和频率数据,分析不同立管间距对三控制杆涡激振动抑制效果的影响。结果表明,下游立管横向振动较上游立管弱;对于上游立管,随着间距的增大,控制杆的抑制效果逐渐平缓降低,下游立管则先增大后减小;串联立管间距为5~6倍管径时三控制杆抑制效果最佳。 相似文献
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As firms come under greater market pressure, the management of the inter-functional design/manufacture relationship becomes a more important competitive variable. The characteristics of the design-manufacture interface were analyzed, and several methods of the design-manufacture interface relationship management were compared. Based on theories concerned and enterprise practice, how to manage the relationship of design-manufacture interface to reduce the product cost and shorten the time-to-market was demonstrated, finally the competitive advantage was improved. 相似文献
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针对陕北地区箱梁生产中较易出现的收缩裂缝问题进行了分析、调研、处治,结合吴定高速自管模式,找出并归纳了形成原因,同时列举了产生收缩裂缝的要因,对各个要因制定了具体的处治方法。可供同类工程参考。 相似文献
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