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××线三道河3号小桥,设计为一孔16m钢筋混凝土梁桥,全长32.86m,主体圬工433m~3。本桥与黔桂线三道河小桥并肩。既有桥是两孔8m钢筋混凝土梁桥,全长33.30m,桥位于线路直线上,新老桥的线间距4.00m,西端桥台总高度10.58m,两台基础均置于石灰岩上,允许承载力>6 kg/cm~2,设计应力为3.6kg/cm~2。由于本桥施工时需要挖弃既有桥的一侧锥体,致使既有线路基的稳定受到影响,危及列车运行的安全。因此要采取
× × Line 3 Daohe River Bridge, designed as a hole 16m reinforced concrete beam bridge, a total length of 32.86m, the main workers 433m ~ 3. The bridge and Qian Guangxi line three Daoqiao. The existing bridge is a two-hole 8m reinforced concrete beam bridge with a total length of 33.30m. The bridge is located on the line straight line. The spacing between the new bridge and the old bridge is 4.00m. The total height of the abutment platform at the west is 10.58m. Both of the foundations are placed on the limestone. Bearing capacity> 6 kg / cm ~ 2, design stress is 3.6kg / cm ~ 2. Because of the construction of the bridge need to abandon the existing bridge side of the cone, resulting in the stability of existing line base affected, endangering the safety of train operation. So to take