Technology Empowerment | China Construction Eighth Engineering Division South Company Successfully Applied Precast Concrete Hollow Sandwich
The precast concrete hollow sandwich panel structural system is a new type of precast structural system with large span and large space.
The core idea is to “break down the whole into parts”, transforming the traditional thick solid concrete beam and slab structure into a sandwich structure composed of concrete upper ribs, lower ribs, precast shear keys, precast ribbed panels, and cast-in-place composite panels.
Its structural thickness can be taken as 1/25~1/30 of the span, which can increase the indoor net height by 15%~20% compared to traditional structural systems, greatly improving the spatial experience.
It usually adopts a mixed construction method of “prefabrication+cast-in-place”, which not only ensures the integrity of the structure but also greatly improves the construction efficiency, in line with the policy background of vigorously developing precast buildings in China.
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