孔径5m和6m斜交盖板涵洞设计图已于1983年三季度完成,图号为“叁桥5009”。以往铁路与渠道或道路斜交时,大多套用斜交正做的盖板涵标准图,这样在平面布置上出、入口两端各多出一个大三角形平台,多用了混凝土和钢筋,并形式上也不美观。如果采用正交正做盖板涵,则必须进行局部改渠或改路,不仅增加了改移工程,而且也造成平面恶化,洞内视线不良,同时还增加了与地方签订协议的困难。 Diameter of 5m and 6m oblique cover culvert design has been completed in the third quarter of 1983, drawing No. “Sanqiao 5009.” In the past, when crossing the railway and the channel or road, most of the standard covers of the culvert were made by using a bias cross. Thus, in the layout, a large triangular platform was added at both ends of the entrance, which used more concrete and steel bar. Not beautiful. If orthogonal cover culverts are used, local diversion or diversion must be carried out. This not only increases the number of rerouting projects, but also worsens the plane and causes poor visibility in the cave. At the same time, it also increases the difficulty of signing agreements with local authorities.