逆作法结合格构柱与贝雷架模板支撑体系设计与应用

Design and Application of Top-down Construction Method Combining with Lattice＇ Column and Bailey Frame Formwork Supports

结合长沙某超高层建筑地下结构施工的工程实例，介绍了逆作法结合格构柱与贝雷架模板支撑体系的工程设计、节点构造；明确了施工工艺流程与要点；并对实际工程中的支撑体系进行设计验算。结果表明，该支撑体系满足承载力要求；指出将逆作法与该模板支撑体系结合，较好地解决了深基坑开挖对相邻高层建筑基础扰动这一难点，从而保证了施工安全，降低了施工难度，缩短了施工周期。

With an underground structure construction project of super high-rise building in Changsha, the project design, joint construction, calculation, construction process and point of top-down method combining with lattice column and Bailey frame formwork supports system are discussed. The results confirm that the system meets bearing capacity and solves the problem of disturbance to adjacent high-rise building＇ s foundation. Therefore the construction safety is assured and construction period is shortened.