CONSTRUCTION TECHNOLOGY OF WALL-COLUMN CONCRETE UNDERPINNING

The detection of a 11-layers frame shear wall structure shows that the concrete strength of the seventh partial wall columns and the eighth partial beam and floor plate in that building are very low.For meeting the related nantional standards and avoiding demolishment of the building,the underpinning and strengthening methods are used,with which the loads of center column are underpined by the diagonal steel strut and the cross-sectional areas of side pillar are strengthened,both ends of shear wall are chiseled in turn and then concrete is poured again.