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在寒区道桥设计施工中,许多地方多采用轻型墩台基础、灌注桩基础等,这些方法虽然都有一定的抗冻拔效果,但造价较高。黑龙江省肇东市在排灌渠系的桥闸设计施工中,采用锚固底梁基础,并在10座农道桥上应用。经多年观测证明,效果很好。以肇东市,1988年所建涝洲灌区干渠8米3跨的两棵树桥为例。渠道设计流量18米~3/秒,渠深3.0米,设计水深2.0米,渠底1.0米以下有近4米的粉细砂层,地下水位距地表1.0米。设计锚固底梁基础(底梁
In cold area bridge design and construction, many places use light pier foundation, pour pile foundation, although these methods have some anti-freezing effect, but the higher the cost. In Zhaodong, Heilongjiang Province, in the design and construction of the bridge gate of the irrigation and drainage canal system, the foundation of the anchorage bottom beam is adopted and applied on 10 rural road bridges. After years of observation shows that the effect is very good. Taking Zhaodong City and the Shuangzhou Irrigation District constructed in 1988 as an example, two tree bridges spanning 8 meters and 3 meters are taken as an example. Channel design flow of 18 m ~ 3 / s, depth of 3.0 m, design depth of 2.0 m, bottom of 1.0 m below the bottom of nearly 4 m of fine sand, groundwater level 1.0 m above the surface. Design anchor bottom beam foundation (bottom beam