在大桥钢梁悬臂安装时,为保证施工顺利进行,且为设计积累参考数据,需较准确地了解其最大受力杆件的安装应力,常要进行应力测量。在此工作中,若用电阻丝片测量,因时间较长,而又在室外,需采取严格的防潮措施,且初读数不稳定,所以我们主要是用手持式变形仪来测量安装应力的。在测量过程中,遵照伟大领袖毛主席关于“读书是学习,使用 In the installation of steel girder cantilever beam, in order to ensure the smooth construction, and the accumulation of reference data for the design, the more accurate understanding of the maximum stress of the installation of the bar stress, often stress measurement. In this work, if using resistance wire measurement, due to longer time, but outdoors, to take strict moisture-proof measures, and the initial reading is not stable, so we are mainly used to measure the installation of hand-held deformation instrument stress. In the measurement process, follow the great leader Chairman Mao on "reading is to learn, use