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在桥梁、房屋的检测试验中 ,砼应变测量是必测项目 ,目前常用的方法是电阻应变测量技术 ,此方法简单易行 ,但由于环境因素影响较明显 ,在测试中应注意。本文在如何提高砼应变测试的精度上进行了探讨 相似文献
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牵引电机试验台是针对电力机车中牵引电机试验提出的。该试验台主要完成电力机车大修规程所要求的空载试验、小时温升试验、速率试验、换向试验和超速试验。文中给出了主控电路的设计,并采用Matlab/Simulink方法对实际系统进行仿真,给出工程设计和实际系统之间产生差距的原因,有助于在实际中设计出较优的系统。 相似文献
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In order to study the seismic behavior of frame with specially shaped columns,the hysteretic curve was analyzed based on a quasi-static test of a two-span,three-story frame with specially shaped columns.The top layer framework curve and the corresponding resilience model were obtained from the hysteretic curve.And the stiffness and strength degeneration were also investigated.The results indicated that the stiffness degeneration is not obvious,thus the frame with specially shaped columns has high earthquake-resistant behavior.The resilience model calculated from the test can provide reference for design and nonlinear finite element analysis. 相似文献
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