An experimental and numerical study on the in-plane axial and shear behavior of sprayed in-situ concrete sandwich panels

Serpilli, Michèle; Clementi, Francesco; Lenci, Stefano

doi:10.1016/j.engstruct.2020.111814

Cited by 14 publications

(2 citation statements)

References 32 publications

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“…Furthermore, only discrete measures in several points of the specimens may be derived [14]. On the other hand, commonly, Finite Element Method (FEM) plane models are used to reproduce the experimental behavior of cRCSP-based walls ( [15], [16]). As known, those models are able to return the numerical point-by-point response of the wall, that cannot be directly compared with the corresponding experimental results, therefore force-displacement curves, cracking patterns, and limited local measurements are used to the scope.…”

Section: Introductionmentioning

confidence: 99%

Continuous Strain Field Estimation for Cast-in-Situ Reinforced Concrete Sandwich Walls Under Cyclic Lateral in-Plane Loading

Riascos González,

Cassese,

Occhiuzzi

et al. 2023

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Cast-in-situ reinforced concrete sandwich walls represent a promising solution for energy-efficient housing. Nevertheless, their use in earthquake-prone areas is fairly limited because of the lack of seismic guidelines. Furthermore, the evaluation of seismic response of such a structural typology can be partially considered a still open issue. In this study, the in-plane seismic behavior of cast-in-situ reinforced concrete sandwich walls is investigated through cyclic experimental tests on real scale sandwich walls composed of a central layer of insulating material closed between two external reinforced shotcrete layers. Experimental load-displacement curves and observed damage are briefly described. A special focus on the deformative mechanisms of the walls is dealt with. A hybrid experimental-numerical procedure is proposed,to derive continuous strain fields starting from local discrete experimental measures, with promising preliminary results.

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Section: Introductionmentioning

confidence: 99%

Continuous Strain Field Estimation for Cast-in-Situ Reinforced Concrete Sandwich Walls Under Cyclic Lateral in-Plane Loading

Riascos González,

Cassese,

Occhiuzzi

et al. 2023

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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“…Experimental studies are limited to determining the optimal placement of reinforcement in the joints between wall panels, bridge plate joints [15][16][17], as well as issues of concrete work in the joint, issues of adhesion of panel concrete and butt concrete [18]. In addition, the issues of shear strength are also considered in relation to the construction of multi-layer wall panels [19][20][21], data on the flexibility of the reinforcement in the joints, the influence of its position on the nature of the destruction of the joints and the connected panels, the destructive loads are obtained. The obtained data can be partially applied to the joints of building elements, for example, when studying the influence of the number and location of embedded parts and fittings in the joints, studying the nature of joint failure during shear [22,23].…”

Section: Introductionmentioning

confidence: 99%

Structural solution of the horizontal joint of floor slabs in girderless frame

Mironova

2021

E3S Web Conf.

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Despite the widespread use of monolithic construction, precast concrete remains in demand in the construction of residential and administrative buildings. Regardless of the advantages in technology and the quality of work, it is necessary and appropriate to modernize the existing design solutions, which allows you to simplify and speed up the technological operations during construction. Moreover, in the construction of complex nodes and joints, the qualification of workers is important, so simplifying the work without losing the quality of construction and ensuring strength, stability and durability is an important task. This problem can be solved by using modern embedded parts in the joints that do not require welding and other complex technological operations. In this paper, a constructive solution of the horizontal joint of the floor slabs located in the zone of action of minimal forces is proposed on the example of a girderless frame. The purpose of the study is to determine the stress-strain state of the proposed structural solution of the horizontal joint of floor slabs using loopshaped embedded parts «PFEIFER» and to develop recommendations for determining the shear compliance. Based on the analysis of the results of numerical modeling, the features of the stress-strain state of the joint during shear operation are revealed. The results obtained can be used in the design of buildings with precast-monolithic ringless frames, in the modernization of existing standard solutions of precast-monolithic frames, as well as other load-bearing systems made of precast concrete.

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Flexural behavior of innovative multifunctional concrete sandwich shells with different types of connectors

Chen,

Zhang,

Wan

et al. 2024

Structural Concrete

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This study develops an innovative multifunctional concrete sandwich shell based on a combined experimental and finite element (FE) study on its flexural behavior. The sandwich shell is made up of inner and outer concrete layers connected by connectors, with a middle functional layer that provides various functions such as insulation, acoustic, and vibration control. Bending tests were conducted on four groups of specimens, including three groups of sandwich shells with different types of connectors, that is, truss, grid, and plate connectors, and one reference group of solid shells. Loads, displacements, and strains were recorded during the tests. The FE analysis showed good correlation with the experimental results. Furthermore, a parametric study was conducted using the FE model to evaluate the influence of different parameters, such as middle layer thickness and number of connectors. The results show that the performance of the sandwich shell is comparable to, and in some cases better than, that of the solid shell, depending on the type of connectors used. This study provides a proof of concept for the sandwich shell and establishes a prototype structure for future research.

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An experimental and numerical study on the in-plane axial and shear behavior of sprayed in-situ concrete sandwich panels

Cited by 14 publications

References 32 publications

Continuous Strain Field Estimation for Cast-in-Situ Reinforced Concrete Sandwich Walls Under Cyclic Lateral in-Plane Loading

Continuous Strain Field Estimation for Cast-in-Situ Reinforced Concrete Sandwich Walls Under Cyclic Lateral in-Plane Loading

Structural solution of the horizontal joint of floor slabs in girderless frame

Flexural behavior of innovative multifunctional concrete sandwich shells with different types of connectors

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