压力注浆在某桥头处理中的应用

Application of Pressure-grouting Technique in Foundation Treatment for Bridge Ends

江苏省某市立交桥桥头由于填筑和工期的影响,通车一年后出现桥头挡墙不均匀沉降、桥头搭板脱空的现象,桥头跳车严重。通过对挡墙基础和桥头搭板采用压浆处理,然后对局部路面进行铣刨加铺,有效地解决了桥头跳车的发生。

Because of subgrade filling and construction period at bridge head for cross bridgehead in Jiangsu province,uneven settlement of retaining wall and void under bridge end plate are appeared one year after the opening,and bumping phenomenon is widespread at the roadbed-bridge transition section. Through the application of pressure-grouting technique applied in basis of retaining wall and under bridge end plate,and then milling-planning and slotting filling applied in the partly asphalt pavement,it is proved to be effective and reliable to prevent car-jumping at end of bridge.