A construction example of solving the problem of replacing columns without interrupting the business of the building by means of column jacking and column cutting in thetechnological reconstruction of an outdated factory building so as to avoid considerable pecuniaryloss of the concerned enterprise is presented and discussed.

In light of design and analysis of dismantling column of a shop, the paper provides an effective design method by which we can draw out understratum column on base of adding reinforced concrete framework bearing column.

Construction technique of the beam bottom s reinforcement and strengthening for holding beams to change poles on steel reinforcement concrete;

In order to enhance the efficiency of nonlinear computation,the model is simplified in the project of supporting beam and removing column related to high structure.

The problems of reforming a mill building with reinforeced concrete bent frame can be solved effectively by a scheme of supporting beam and removing column,using adhesion supporting steel pole & bracket as well as artificial bored pile etc according to the characteristics of the project.

A good effect has been achieved by drawing column method combined supporting beam and removing column with bridle truncated column,adjacent concrete columns of the single story industrial building are continuously demolished.