| 基于可靠度的特载车荷载分项系数研究 |
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| 引用本文： | 吕颖钊.基于可靠度的特载车荷载分项系数研究[J].浙江交通职业技术学院学报,2014,15(3):5-9. |
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| 作者姓名： | 吕颖钊 |
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| 作者单位： | 杭州市公路管理局,杭州,310030 |
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| 摘 要： | 针对大件运输特载车过桥问题,对特载车荷载分项系数进行研究。根据特载车荷载的特点,确定特载车荷载的概率分布和统计参数。采用概率可靠度方法,对受弯、受剪构件以及6种活恒载比,进行了结构承载能力可靠度计算。以最低可靠指标为尺度,适当考虑了一定的安全余量,推荐了特载车荷载分项系数为1.1。工程应用表明,该系数用于大件运输特载车过桥的结构检算基本可行。
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| 关 键 词： | 大件运输 荷载分项系数 可靠度方法 最低可靠指标 |
Research on Load Subentry Coefficient of Special Load Vehicles Based on Reliability Method |
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| LV Ying-zhao.Research on Load Subentry Coefficient of Special Load Vehicles Based on Reliability Method[J].Journal of Zhejiang Vocational and Technical Institute of Transportation,2014,15(3):5-9. |
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| Authors: | LV Ying-zhao |
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| Institution: | LV Ying- zhao(Highway Administration of Hangzhou, Hangzhou 310030, China) |
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| Abstract: | Aiming at special load vehicle through the bridge,load subentry coefficient was researched. According to the characteristics of special load vehicle,the probability distribution and statistical parameters of special vehicle’s load were determined. Referring to the bending member and shear member,and six ratios of live load to dead load,the reliability indexes of bearing capacity were calculated based on reliability method. According to the permissible reliability index and considering the structural safety,the load subentry coefficient 1. 1 of special load vehicle was recommended. Engineering application shows that the coefficient 1. 1 is feasible for bridge structure checking of large- scale equipment transportation. |
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| Keywords: | large-scale equipment transportation load subentry coefficient reliability method permissible reliability index |
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