扩大基础式桥梁和涵洞,基础施工非常重要。建筑物基础施工质量的好坏,将来直接影响建筑物的稳定性,特别是软地基基础,质量控制更为重要。粉沙土层软地基采用“井点降水”的方法控制质量;湿陷性黄土层软地基采用“片石或碎石挤淤法”控制质量;饱和软粘土层采用“木板挡土墙,泥浆棒清淤和基底加铺预制混凝土块”的综合方法控制质量。 To expand basic bridges and culverts, basic construction is very important. The quality of the building foundation construction quality will directly affect the stability of the building in the future, especially on the foundation of soft foundation. Quality control is more important. Silt sand soft ground with “well point precipitation ” method to control the quality; collapsible loess soft ground using “slaty stone or stone crushing silt ” control quality; saturated soft clay layer “wood retaining Wall, Mud Dredging and Precast Concrete Blocks ”to control quality.