Study on the flexural behavior of precast concrete multi-ribbed sandwich slabs under different boundary conditions

Chen, Zheng; Xiong, Feng; Liu, Ye; Yu, Minjiu

doi:10.1016/j.engstruct.2023.116342

Cited by 3 publications

(2 citation statements)

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“…Connectors play a crucial role in the joint force transmission of concrete sandwich panels, with their structure and performance significantly influencing the load-bearing capacity of sandwich panels [31]. With the increasing research on concrete sandwich panel structures, various forms of connectors for sandwich panels have emerged, including Zreinforced (BFRP [7] and GFRP [19]), space fabric net [15], reinforced truss [12], steel wire truss [18], concrete cylinders [17], steel wire mesh [21], hollow glass FRP tubes [8], short UHPC columns [25], concrete ribs [9], and rivets [26]. Different forms of connectors have Connectors play a crucial role in the joint force transmission of concrete sandwich panels, with their structure and performance significantly influencing the load-bearing capacity of sandwich panels [31].…”

Section: Introductionmentioning

confidence: 99%

“…Wall components primarily withstand axial or eccentric pressure, whereas roof and floor components mainly support bending loads. References [9,11,14,22,32] studied the bending performance of concrete sandwich panel structures under transverse loads, mainly investigating cracking patterns, strength, stiffness, and other indicators. Reference [33] discussed the bending load-bearing capacity by conducting bidirectional plate bending experiments, while reference [7] studied the out-of-plane bending behavior of wall panels.…”

Section: Introductionmentioning

confidence: 99%

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Study on Calculation Method of Bending Performance of Concrete Sandwich Composite Slab

Cheng,

Hu,

Wang

2024

Materials

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In order to explore the flexural behavior of a concrete sandwich panel under concentrated boundary conditions, based on Kirachhoff’s elastic thin plate theory in this paper, the geometric deformation, physical conditions, and equilibrium relationship of a sandwich panel are deduced by constructing the layered analysis model of the sandwich panel, the basic differential equation of the flexural deformation of the concrete sandwich thin plate is obtained, and the mathematical expression of the internal force and displacement under the boundary condition of concentrated support is given. Combined with an engineering example, the proposed calculation method is verified. The results show that, in the arrangement of reliable connectors for concrete sandwich panels, the concrete wythes bear the load while the contribution of the core layer to the bending capacity of the structure can be ignored. When subjected to a laterally distributed load, the sandwich panel mainly experiences out-of-plane bending deformation, and the bending normal stress in the concrete panel layer shows a linear non-uniform distribution along the thickness direction of the panel. The bending deformation performance and bearing efficiency of a concrete sandwich slab with the change in concentrated support position have significant effects, and the load transfer efficiency can be improved by optimizing the arrangement of supports. Except for small local areas near the supports, the bending stress distribution and deformation behavior of the concrete sandwich panel can be accurately analyzed by the calculation method established in this paper.

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