| 钢筋混凝土吊车梁荷载效应谱试验研究与疲劳分析 |
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| 引用本文： | 赵东拂,宋玉普,杨健辉,覃丽坤. 钢筋混凝土吊车梁荷载效应谱试验研究与疲劳分析[J]. 土木工程学报, 2004, 37(1): 39-44 |
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| 作者姓名： | 赵东拂 宋玉普 杨健辉 覃丽坤 |
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| 作者单位： | 1. 大连理工大学土木系;北京建筑工程学院土木系
2. 大连理工大学土木系 |
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| 基金项目： | 国家自然科学基金资助项目(批准号50078010) |
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| 摘 要： | 针对吊车梁荷载为大量重复动态随机荷载这一主要特点.通过对生产运行中的吊车梁进行较长时间连续测试分析,建立了吊车梁的荷载效应谱。采用模糊理论确定吊车梁循环荷载幅值及峰值均服从正态分布规律,并由此对吊车梁进行了疲劳分析,得到了更能反映实际情况的计算结果。
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| 关 键 词： | 荷载效应谱 模糊优选法 正态分布 疲劳分析 |
| 文章编号： | 1000-131X(2004)01-0039-06 |
| 修稿时间： | 2001-12-17 |
EXPERIMENTAL RESEARCH ON LOADING EFFECT SPECTRUM AND FATIGUE ANALYSIS OF R.C.CRANE BEAM |
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| Zhao Dongfu Song Yupu Yang Jianhui Qinlikun. EXPERIMENTAL RESEARCH ON LOADING EFFECT SPECTRUM AND FATIGUE ANALYSIS OF R.C.CRANE BEAM[J]. China Civil Engineering Journal, 2004, 37(1): 39-44 |
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| Authors: | Zhao Dongfu Song Yupu Yang Jianhui Qinlikun |
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| Affiliation: | Dalian University of Technology Beijing Instituty of Civil Engineering and Architecture |
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| Abstract: | Through the continual monitoring and analyzing of usual working cranes over three months, that the main character of crane load belongs to a large number of dynamic repeated cyclic random loads, hence the loading effect spectrum of R. C. crane beem has been established. Using the fuzzy theory, a conclusion that the amplitude value and peak value of the cyelic load on crane beam are subordinated to the regularity of normal distribution, in case the fatigue behaviour of R. C crane beam is analyzed according to that conclusion, thus the reffecting more practical reality calculated results can be obtained. |
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| Keywords: | loading effect spectrum fuzzy optimum selection method normal distribution fatigue analysis |
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