双梁式架桥机横向稳定性分析及防止倾覆的措施

现代铁路架桥机既是铁路桥梁架设的专用设备，更是集机、电、液技术为一体，具有起重、运输等机械特点的综合型设备，评定其技术性能最为重要的就是其是否具有安全可靠性。分析总结我国铁路史上架桥机历次的倾覆事故得知，绝大多数是由于整机的横向失称而造成的。因此，架桥机的横向稳定是确保其安全可靠的基础，任何拥有或使用该机的单位都要围绕这一特性制定一系列规程及措施。铁道部第二工程局近二十年主要使用双梁式架桥机，因此

ANALYSIS ON LATERAL STABILITY OF DOUBLE-ARMED BRIDGE ERECTING MACHINE AN D PREVENTIVE MEASURE AGAINST OVERTURNING

Modern railway bridge erecting machine is not only a sp ecial equipment for erecting the railway bridge span,but also a synthetic equipm ent with mechanical specialities of hoisting,transportation,etc,which combines t he mechanical,electric and hydraulic techniques as a whole.The most importance o f evaluating its technical functions is that it hsa safety reliability or not.By analyzing and summarizing several overturning accidents of the bridge erecting machines occur red in the history of Chinese railways,it is known that the most accidents were caused by the failure of alteral stability of the entire machine.Therefore,the l ateral stability of the bridge erecting machine is the base for ensuring its saf ety and reliability.It is necessary to establish a series of codes and measures according to this speciality for every department who possesses or applies such machines.Double-armed bridge erecting machines were mainly used by the Second E ngineering Bureau of MOR in recent 20 years.Therfore,in accordance with the spec iality of the double-armed bridge erecting machine,its lateral stability has be en analyzed in this paper.The principle to raise its stability during design and the safety measures to prevent overturn during application are also proposed.