现浇预应力连续箱梁沉落值预设与控制

Preseting of Settlement of Prestressed Continuous Box Beam Cast in Situ

对于现浇预应力连续箱梁,支架的沉落控制是十分必要的技术手段,预留拱度的设置以及箱梁底面标高的控制,是施工成败的关键。利用施工期间的观测数据,对比分析,总结出其中的规律。

Casting in situ the prestressed continuous box beam and controlling the stand settlement are technical means extremely necessary. Setting up of precamber and contral of box beam bottom elevation are the key of success and failure in the construction. The paper summarises the laws of box beam making with data observed during construction and through comparative analysis.