在桥架型起重机安装监督检验和定期检验时,需要测量在额定载荷时主梁下挠值和静载试验时主梁的永久变形,用以考察主梁的静刚度和强度。1常用方法《起重机械监督检验规程》中规定的方法为水准仪法或钢丝法,是通常采用的检验方法。1.1水准仪法水准仪测量法分为将水准仪放桥架上和地面上两种。 In the bridge crane installation supervision and inspection and periodic inspection, the need to measure the nominal load under the deflection of the main girder and static load test of the permanent deformation of the main beam, in order to examine the main girder static stiffness and strength. A common method “Crane Supervision and Inspection Procedures,” the method specified in the level of law or wire method is the commonly used test methods. 1.1 level method Level measurement method is divided into the level on the bridge and on the ground two.