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由第二設計院编制的全路通用图“道碴桥面鋼筋混凝土梁、预应力鋼筋混凝土梁矩形高墩”(式桥4042),业經审查完竣,在全路推广使用。該图系按中-22級設計。跨度为24m、23.8m、27.7m及31.7m,配合专桥1002及大138梁部結构。該图墩身高度(顶帽底至基顶高度)自30m起至60m(与梁跨大小有关)。基底均按岩石地基設計,最大应力自5公斤/平方厘米开始。該图分别按直綫及曲綫設計。曲綫上桥墩采用墩頂预偏心,墩身对称边坡的形式。該图适用于非地震区无水或流量較小的谷架桥,計算中未考虑地震力,水流冲击力,冰压力及船舶撞击力。
The general plan “ballastless deck reinforced concrete beam and prestressed reinforced concrete beam rectangular tall piers” (type bridge 4042) prepared by the Second Design Institute is the general plan of the whole road and has been widely used in the whole road after being examined. The figure is based on the -22 level design. Span of 24m, 23.8m, 27.7m and 31.7m, with the special bridge 1002 and the big 138 beam structure. The figure pier height (top hat to base height) from 30m up to 60m (with the beam span size). The basement is designed on a rock foundation with a maximum stress of 5 kg / cm 2. The figure is designed according to straight line and curve. The pier on the curve adopts the pre-eccentricity on the pier top and the symmetrical slope on the pier body. This map is applicable to the valley bridge with no water or small flow in the non-seismic area. The earthquake force, the current impact force, the ice pressure force and the ship impact force are not taken into account in the calculation.