Author(s)

GuangLiang Qiu^1,2, Jie Luo^1,2, XiaoXia Zhao^1,2*, BoBo Li^1,2, BaoAn Zhang^1,2

Affiliation(s)

¹China Construction Fourth Engineering Divion Corp.,Ltd., Guangdong 510000, Guangzhou, China.

²China Construction Fourth Engineering Bureau Construction Investment Co., Ltd., Shanghai 200000, China.

Corresponding Author

XiaoXia Zhao

ABSTRACT

This paper proposes a crack-prevention construction method for cantilevered multi-story, large-span steel-reinforced concrete walls, based on a specific multi-story structure with a 23m span. Before construction, the method involves building a three-dimensional finite element numerical model to thoroughly analyze the stress distribution of the cantilevered multi-story steel-reinforced concrete exterior wall under various working conditions. This allows for the optimization of reasonable construction procedures at each stage and the division of the cantilever structure into tension and compression zones. After the multi-story cantilevered steel frame is assembled, the temporary support system at the bottom is removed.  The compression zone and wall sections subjected to smaller loads are then cast in a stepped manner, followed by the tension zone. This increases the overall stiffness of the cantilever wall in the compression zone and releases stress in the tension zone to mitigate strain. This cleverly avoids simultaneous deformation of the concrete and steel frame due to excessive tensile stress, thereby reducing the risk of large-area cracks or through-cracks in the cantilever wall.

KEYWORDS

Cantilevered; Multi-story large-span; Steel-reinforced concrete wall; Crack-prevention construction

CITE THIS PAPER

GuangLiang Qiu, Jie Luo, XiaoXia Zhao, BoBo Li, BaoAn Zhang. Construction techniques and applications for crack prevention in cantilevered multi-story large-span steel-reinforced concrete walls.Multidisciplinary Journal of Engineering and Technology. 2026, 3(1): 13-19. DOI: https://doi.org/10.61784/mjet3034.

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