临近既有线桥梁施工防护

Construction Protection of Bridge besides Existing Railway Lines

通过比较余家湾下行特大桥桥梁施工防护方式,采用理正基坑软件求出人工挖孔桩支护方式各内力,并计算出布桩方式、桩长及配筋,验证结构整体稳定性及抗倾覆性。最终将计算结果应用到现场实际,达到预期的支护效果。

By comparing the protection methods for construction of beams of Yujiawan downward extra-large bridge, the Lizheng-excavation software is applied to calculate all internal forces of supporting method for artificial drilled piles, pile arrangement, pile length and reinforcement assembly, and prove the stability of complete structure and anti overturning stability. The final calculated results are put into practice and an expected supporting effect is obtained.