主要研究内容包括：(1)对国内外几种主要规范中钢筋混凝土圆管涵的内力计算方法进行了分析、比较、评价。
Several internal force computational methods of the reinforced concrete culvert pipe in the domestic and foreign main standards are compared, analyzed, Appraised.
埋设在高等级公路中的钢筋混凝土圆管涵属于上埋式管涵，作用于其上的竖向土压力影响因素繁多，分析极其复杂。
There are many factors to influence the vertical earth pressure on the reinforced concrete culvert, so it is very difficult for the analysis.
圆管或方管内填充另一种工程材料构成的组合截面构件(如钢管混凝土)在工程结构中得到了广泛的应用。
Combined section columns which are made of a circular or a square tube filled with another material are used widely in engineering structures, such as concrete filled tube.
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