Construction method of outer wrapped concrete steel pipe composite column

Abstract

The invention discloses a construction method of an outer wrapped concrete steel pipe composite column. The method comprises following steps of installing steel pipe columns; pouring outer wrapped concrete in the range of every floor by layers outside the steel pipe column and carrying out structural construction of a current floor besides the steel pipe columns when outer wrapped concrete within the range of the current floor is finished pouring till outer wrapped concrete, apart from the steel pipe columns of all floors, is finished pouring; and pouring in-column concrete into the steel pipe columns of all floors. The construction method of the outer wrapped concrete steel pipe composite column has following beneficial effects: due to the fact that outer wrapped concrete of every floor is firstly poured by layers and concrete in the steel pipe columns is not constructed immediately, the problem that concrete laitance in the steel pipe columns is not easily chiseled is solved; then, integral pouring operation is performed to in-column concrete of the steel pipe columns of all floors after outer wrapped concrete of all floors is finished pouring; and by utilizing the feature of hydration heat of previously-poured outer wrapped concrete, a heat preservation effect is provided for subsequently-poured in-column concrete in order to avoid additional heat preservation treatment, shorten construction period and save construction cost.

Description

technical field [0001] The invention relates to the field of engineering construction, in particular to a construction method of an outsourcing concrete steel pipe composite column during construction in winter. Background technique [0002] With the increasing number of super high-rise buildings, how to shorten the construction period of super high-rise buildings has become a very important research topic. [0003] Steel pipe composite columns are often used as vertical support in super high-rise buildings. When the steel pipe composite columns are steel pipe composite columns covered with concrete, the method of integrally pouring the inner and outer concrete of the column is usually used to construct the steel pipe composite column. Many, during construction, it is necessary to pour steel pipe composite columns layer by layer, and after pouring the steel pipe composite columns on each floor, construct other structures (such as floor structures) on the same floor, that is,...

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Problems solved by technology

[0003] Steel pipe composite columns are often used as vertical support in super high-rise buildings. When the steel pipe composite columns are steel pipe composite columns covered with concrete, the method of integrally pouring the inner and outer concrete of the column is usually used to construct the steel pipe composite column. Many, during construction, it is necessary to pour steel pipe composite columns layer by layer, and after pouring the steel pipe composite columns on each floor, construct other structures (such as floor structures) on the same floor, that is, pour the steel pipe composite columns on the first floor first , and then carry out the construction of other structures (such as horizontal beams) on the first floor, and then pour the steel pipe composite columns on the second floor as a whole, and then carry out the construction of other structures (such as horizontal beams) on the second floor, and so on By analogy, until the overall pouring of the entire steel pipe composite column is completed, due to the limitation of the pipe diameter of the steel pipe column, using the above method to pour the steel pipe composite column will cause the concrete laitance in the steel pipe column to be difficult to pick.

[0004] However, if the concrete pouring of the entire steel pipe concrete column is completed first, and then the outsourcing concrete is poured layer by layer, although the problem that the concrete laitance in the steel pipe column is not easy to be chiseled is avoided, it is necessary to insulate the internally poured steel pipe concrete , especially during the winter construction period, the insulation time is relatively long, and it is not convenient for the construction of the outer structure of the steel pipe column, which seriously affects the construction period

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