软土地区低净空异型现浇箱梁施工技术

The Construction Technology of Low Clearance Special Cast-in-place Box Girder in Soft Soil Area

针对软土地区低净空异型现浇箱梁施工,创造性地提出了"古法新用"的概念,采用土胎模形成箱梁底模,并结合设置大跨径龙门吊应用于现浇箱梁施工,创建了一套高效安全的现浇箱梁施工技术,在保证质量尤其是外观质量和提高施工效率的同时,又极大地降低了施工成本、施工难度和施工作业风险。

Point at for special cast-in-place box in soft soil area of low clearance girder construction,creatively put forward the concept of ＂new＂ ancient law,use the soil mould formation shaped box girder bottom formwork,and combined with the setting of large span gantry crane fore cast-in-place box girder construction,create a set of efficient and safe low headroom special-shaped cast-in-place box beam construction technology. In ensuring quality especially appearance quality and improve construction efficiency,but also greatly reduce the construction cost,construction difficulty and construction operation risk.