Steel component concrete encasement construction technique

Abstract

The invention discloses a construction technique of wrapping concrete outside a steel member. The construction technique adopts the steps: firstly, concrete is prepared; secondly, a first layer of reinforcing steel bars is prepared outside the steel member, and the distance between every two adjacent reinforcing steel bars is not less than 80 mm; thirdly, the concrete is sprayed to the surface ofthe steel member, and the thickness of the concrete is controlled between 70 mm to 100 mm; fourthly, a second layer of reinforcing steel bars is prepared outside the concrete layer; fifthly, the concrete is sprayed according to the third step; and sixthly, the fourth step and the fifth step are repeated according to the requirements, and the concrete is cured conventionally. The construction technique can avoid the problems in the existing casting method for wrapping concrete outside the steel member, mould plates are not required or less mould plates are required, therefore the investment isgreatly reduced and the construction period is shortened.

Description

technical field [0001] The invention relates to a building construction technology, in particular to a construction technology of steel components wrapped with concrete. Background technique [0002] In recent years, with the continuous expansion of building scale, continuous innovation of architectural forms, and rapid development of design and construction technology, steel pipe concrete and steel concrete structures have been more and more widely used. At present, in the application of steel-concrete structures, the steel or steel pipe outsourcing concrete is poured by the traditional method of direct pouring and tamping of the supporting formwork. [0003] Due to the complex surface of the steel components, the air is not easy to discharge, therefore, the above-mentioned traditional method of construction is likely to cause inaccurate vibration. Compared with the section steel, the steel pipe occupies a larger space in the column, so the section of the outer concrete is...

AI Technical Summary

Problems solved by technology

[0003] Due to the complex surface of steel components, the air is not easy to discharge, therefore, the above-mentioned traditional method of construction is likely to cause inaccurate vibration

Compared with the section steel, the steel pipe occupies a larger space in the column, so the section of the outer concrete is smaller, which is not convenient for vibration; moreover, because there are more steel bars and welded studs bound outside the steel pipe, it also makes it difficult to use direct pouring. When pouring by the pounding method, it is difficult for the vibrator to vibrate in place

In addition, for some occasions where the space is narrow or the structure is complex and the formwork cannot be supported, it is impossible to pour concrete out of the steel structure.

In short, this method of pouring concrete out of the steel-concrete structure by directly pouring and tamping the formwork is not only difficult in construction, but also leads to a long construction period due to the formwork support work, and it is difficult to guarantee the construction quality

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