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林依然1912

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[交流] 预应力钢索高温蠕变试验

1、进行高温蠕变试验时,需要设置初始应力,应力水平是如何选取的?
2、不同强度等级钢丝做蠕变试验,进行对比,应力水平是选取一样大?还是按各钢丝强度等级的百分之几来选取?
比如:应力水平是都选用1002N/mm2   还是  都选用50%的极限强度?最后将两种强度等级钢丝的蠕变应变时间曲线进行对比呢?
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