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桥式起重机箱形主梁变形时采用电焊法矫正,其原理基本上同火焰法相似。当主梁同时兼有旁弯和下挠时,必须首先矫正旁弯。一、准备工作 1.紧固行车,防止行车承受矫正中施加的顶力时产生任何位移。应进行整体紧固,其一可在端梁上压重;其二可将重机端梁通过结构件与大车轨道砼梁夹固。我们采用在主梁和端梁的四个交接处下方,垫以足够重量的钢坯,并在两者中间装机械顶,以调节
Bridge girder box girder deformation by electric welding method of correction, the principle is basically the same with the flame method. When the main beam has both side-bends and down-turns, the side-bends must first be corrected. First, the preparatory work 1. Tighten the car, to prevent the driving force correction imposed in the top force generated when any displacement. The overall fastening should be carried out, one of which can be heavy on the end beam; the other can be heavy machine end beams through the structure and cart rail concrete beams. We use below the four junctions of the girders and end beams, padded with a steel billet of sufficient weight and fitted with a mechanical top between them to adjust