在水湿地灌区开发建设中，由于排灌渠道纵横交错，必须设置足够的农道桥，来满足交通运输要求。水湿地土质松软、粘重，承载力低，含水量大，冻害破坏十分严重。采用传统结构，需要将桥墩基础置于冻深以下，这种结构设置方式不仅基础工程投资比例大，而且在地下水埋深很浅的水 In the development and construction of irrigated wetland, due to the criss-crossing arrangement of irrigation and drainage channels, enough agricultural bridges must be set up to meet the requirements of transportation. Water wetland soft soil, sticky weight, low bearing capacity, water content, damage to frost damage is very serious. With the traditional structure, the pier foundation needs to be placed below the freezing depth. This kind of structure setting not only has a large proportion of investment in basic construction but also has a very shallow groundwater depth