杨瑞刚,段治斌,徐格宁,赵广立

• 1:太原科技大学机械工程学院
• 2:山西省特种设备监督检验研究院

摘要(Abstract)：

针对大型桥式起重机静载试验大吨位载荷加载困难影响起重机结构安全评价的问题,基于起重机结构设计理论,提出了大型桥式起重机降载当量试验方法,并对降载计算及计算误差进行了探讨。由相似理论建立位移、变形与载荷的关系,以确定相似控制量,通过测试起重机起升载荷较小时的变形和位移,推断起重机起升载荷为极限值时的变形和位移情况。通过逐级加载的方式测试与大型桥式起重机结构特性近似相似的50 t中型双梁桥式起重机跨中截面危险点的应力,将测试应力值与理论计算值进行比较。结果表明,适当降载比例的降载试验能实现一定精度的结构响应预测,可用于起重机结构安全评价。

关键词(KeyWords)： 安全工程;大型起重机;相似理论;降载当量试验;安全评价

Abstract:

Keywords:

基金项目(Foundation): “十二五”国家科技支撑计划项目(2011BAK06B05);; 质检公益性行业科研专项项目(201210068-3);; 山西省自然科学基金项目(2011011019-2)

作者(Author): 杨瑞刚,段治斌,徐格宁,赵广立

参考文献(References)：

• [1]YANG Ruigang(杨瑞刚),XU Gening(徐格宁),SHU Xuefeng(树学峰).On the crane safety assessment based on the unascertained measuring theory[J].Journal of Safety and Environment(安全与环境学报),2011,11(2):224-227.
• [2]YANG Xinhua(杨新华).Method of monitoring main beam dead stiffness of high tonnage bridge crane[J].Industrial Safety and Dust Control(工业安全与防尘),1998(1):22-24.
• [3]WU Qianyong(邬钱涌).Research of load test simulation system for cranes(门式起重机模拟加载测试系统研究)[D].Chengdu:Southwest Jiaotong University,2012.
• [4]CAI Zhipeng(蔡志鹏),ZHAO Haiyan(赵海燕),LU Anli(鹿安理),et al.Welding distortions of huge structures controlled accurately through the numerical method combined with model experiment[J].Chinese Journal of Mechanical Engineering(机械工程学报),2002,38(10):100-104.
• [5]HU Jianhua(胡建华),SHEN Ruili(沈锐利),ZHANG Guiming(张贵明),et al.A total bridge mode study of the Pingsheng bridge in Foshan[J].China Civil Engineering Journal(土木工程学报),2007,40(5):17-25.
• [6]YU Shanwu(余山雾),CAI Min(蔡敏).The study on analysis of the construction model and technology of civil engineering tests[J].Journal of Anhui Institute of Architecture&Industry:Natural Science(安徽建筑工业学院学报:自然科学版),2009,17(5):17-21.
• [7]YANG Junjie(杨俊杰).The similarity theory and structural model test(相似理论与结构模型试验)[M].Wuhan:Wuhan University of Science and Technology Publishing House,2005.
• [8]XU Gening(徐格宁).Mechanical equipment design for metal structures(机械装备金属结构设计)[M].Beijing:Machinery Industry Press,2009.
• [9]BAI Xiangzhong(白象忠).Relaxation of similarity requirements[J].Experimental Mechanics(实验力学),1988,3(4):412-417.
• [10]PAN Guangbin(潘光斌),CHEN Guang(陈光).Uncertainty analysis of indirect measuring system models[J].Acta Metrologica Sinica(计量学报),2006,27(4):397-399.