Prevention and correction of uneven rising in slip-form construction

Taking the construction by slip-form technique without derrick frame during the erection of a 120m high reinforced concrete chimney of some seaside petrochemical company as an example,in this paper the authors analyze the uneven rising during its construction,introduce corresponding correction methods,and give effective control methods by combination of outside and inside control.Frequently measuring and checking can discover uneven rising in time and correct of uneven rising so that a tall cylinder building by slip-form may be finished in time with satisfied quality.