It was rectified by method of preloaded pile underpinning.
采用预压桩托换法后，恢复正常使用功能。
2
Design thought and method of underpinning beam, column, foundation and relative joint construction in remodeling office building for Committee of Family Planning in Harbin are introduced.
提出了哈尔滨市计生委办公楼结构改造所需的托换梁、托换柱、托换基础及相关连接构造的设计思路和方法。
3
Steel tubular pile underpinning technology is an effective method to develop underground space in retrofitting of existing buildings.