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三、施工工艺主梁用预应力或非预应力简支梁均可,其预制工艺仍按一般施工程序进行。仅在梁顶留一条槽,长约60～150cm、宽约20～52cm、深约10～15cm。主梁上翼缘内预埋一段粗钢筋,并在槽内露出搭接长度,供连接筋现场焊接后,一并浇在混凝土内。这种用焊接的连接方式,易于产生较大的内应力,一般宜少采用。最好在梁槽内预埋连接筋,两端按钢筋锚固长度控制。对于组合箱梁及T梁,在梁侧及明槽内
Third, the construction process Beam with prestressed or non-prestressed simply supported beams can be, the prefabricated process is still carried out according to the general construction procedures. Only stay in a beam roof, about 60 ~ 150cm, width of 20 ~ 52cm, depth of about 10 ~ 15cm. A thick steel bar is embedded in the flange of the main beam, and the lap length is exposed in the groove for site welding of the connecting bars and pouring into the concrete together. This welding connection, prone to greater internal stress, generally should be less used. It is best to prefabricated in the beam slot connecting bars, both ends of the length of the anchor by the control of steel. For composite box girders and T-beams, on the beam side and in the clear groove