Structural integrity of steel plate ultra high-performance concrete modules

Sawab, Jamshaid; Luu, C. H.; Nie, Xin; Lim, Ing; Mo, Y. L.; Li, Mo

doi:10.1080/24705314.2016.1211236

Cited by 16 publications

(5 citation statements)

References 16 publications

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“…To ensure the durability of the SSA in the health monitoring of concrete structures, the embedded SSA should provide sufficient capacity when the concrete structure is overloaded. In the design of the SSA, the UHPC material [47] was selected to protect the fragile spherical piezoceramic shell. Since the strength of the UHPC is much greater than normal concrete used in construction, the SSA with the UHPC protection can provide an unparalleled survival rate compared to other protection materials when the concrete structure is overloaded.…”

Section: D Printed Molds and Uhpc Casesmentioning

confidence: 99%

“…First, the spherical piezoceramic shell was electrically isolated via liquid electrical tape. Second, two semispherical shell cases made of ultra-high performance concrete (UHPC) [47] were cast with the pre-designed molds, which were fabricated using a 3D printer. Third, the two cast UHPC cases and spherical piezoceramic shell were assembled together using epoxy resin.…”

Section: Introductionmentioning

confidence: 99%

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A novel embeddable spherical smart aggregate for structural health monitoring: part I. Fabrication and electrical characterization

Kong

Fan

Bai

et al. 2017

Smart Mater. Struct.

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Recently developed piezoceramic-based transducers, known as smart aggregates (SAs), have shown their applicability and versatility in various applications of structural health monitoring (SHM). The lead zirconate titanate (PZT) patches embedded inside SAs have different modes that are more suitable for generating or receiving different types of stress waves (e.g. P and S waves, each of which has a unique role in SHM). However, due to the geometry of the 2D PZT patch, the embedded SA can only generate or receive the stress wave in a single direction and thus greatly limits its applications. This paper is the first of a series of two companion papers that introduces the authors’ latest work in developing a novel, embeddable spherical smart aggregate (SSA) for the health monitoring of concrete structures. In addition to the 1D guided wave produced by SA, the SSA embedded in concrete structures can generate or receive omni-directional stress waves that can significantly improve the detection aperture and provide additional functionalities in SHM. In the first paper (Part I), the detailed fabrication procedures with the help of 3D printing technology and electrical characterization of the proposed SSA is presented. The natural frequencies of the SSA were experimentally obtained and further compared with the numerical results. In addition, the influence of the components’ thickness (spherical piezoceramic shell and epoxy) and outer radius (spherical piezoceramic shell and protection concrete) on the natural frequencies of the SSA were analytically studied. The results will help elucidate the key parameters that determine the natural frequencies of the SSA. The natural frequencies of the SSA can thus be designed for suitability in the damage detection of concrete structures. In the second paper (Part II), further numerical and experimental verifications on the performance of the proposed SSA in concrete structures will be discussed.

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Section: D Printed Molds and Uhpc Casesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A novel embeddable spherical smart aggregate for structural health monitoring: part I. Fabrication and electrical characterization

Kong

Fan

Bai

et al. 2017

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

“…The results showed that the CDP model offers faster analysis with reliable results compared to SPH. Sawab et al [10] and [11] performed an experimental and numerical study on the sandwich panels fabricated using ultra-high performance concrete (UHPC) used for the small modular reactor. They obtained the optimum reinforcement configurations for maximum shear performance.…”

Section: Introductionmentioning

confidence: 99%

Predicting the Structural Performance of Sandwich Concrete Panels Subjected to Blast Load Considering Dynamic Increase Factor

Hanifehzadeh¹,

Mousavi²

2019

JCEST

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The safety of the civil structures could be significantly improved against shock waves and blast loads by using steel concrete steel (SCS) protective walls. A numerical study has been performed to simulate the response of SCS wall subjected to a near-field blast load. A conventional SCS panel subjected to near-field blast load and its structural performance is evaluated in terms of maximum damage and deformation. The simulations performed using ABAQUS\EXPLICIT finite element package and built-in concrete damage plasticity concrete constitutive formulation. The maximum deformation, plastic strain, and failure mode under different loading scenarios have been investigated. The aim of this study is predicting the structural response of the SCS panel with different blast charge and identification of optimum configuration in terms of concrete strength and plate thickness. In the second part of the study, two novel sandwich configurations consisting of a corrugated metal sheet and the concrete core are proposed and compared with the conventional protective walls. The optimum parameters for each structural component are identified using an optimization procedure. Based on this study, using the proposed wall configuration will results in superior performance compared to the conventional walls while the extra cost of fabrication is insignificant.

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“…It is capable of rationally predicting the cyclic shear behavior of reinforced concrete membrane elements including the stiffness, ultimate strength, descending branch, ductility and energy dissipation capacity. The model is even extended to study the behavior of steel plate ultra high-performance concrete structures [25].…”

Section: Introductionmentioning

confidence: 99%

Development of CSMM-based shell element for reinforced concrete structures

Luu

Hsu

2017

Engineering Structures

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Reinforced concrete shell structures have been widely used in a variety of modern engineering applications. It is found from earthquake reconnaissance that reinforced concrete (RC) shell structures, such as nuclear containments, cooling towers, roof domes, shear walls, etc., are the key elements in resisting earthquake disturbances. This paper presents the development of a finite element analysis (FEA) program, SCS-3D, to predict the inelastic behavior of RC shell structures. In the program, a Cyclic Softened Membrane Model (CSMM)-based shell element is developed based on the degenerated shell theory with a layered approach and taking into account the CSMM developed at the University of Houston. To form the FEA program, the constitutive relation modules and the analysis procedure were implemented into a finite element program development framework, OpenSees developed at UC Berkeley. Several large-scale structural tests were employed to validate the developed FEA program, including RC panels subjected to a combination of shear and bending, three-dimensional RC shear wall and cylindrical RC tanks subjected to reversed cyclic loading.

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Structural integrity of steel plate ultra high-performance concrete modules

Cited by 16 publications

References 16 publications

A novel embeddable spherical smart aggregate for structural health monitoring: part I. Fabrication and electrical characterization

A novel embeddable spherical smart aggregate for structural health monitoring: part I. Fabrication and electrical characterization

Predicting the Structural Performance of Sandwich Concrete Panels Subjected to Blast Load Considering Dynamic Increase Factor

Development of CSMM-based shell element for reinforced concrete structures

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