Dynamic load test on progressive collapse resistance of fully assembled precast concrete frame structures

Zhou, Yun; Xiang, Huimin; Pei, Yilin; Hwang, Hyeon‐Jong; Chen, Taiping; Yi, Wei-Jian; Deng, Lu

doi:10.1016/j.engstruct.2020.110675

Cited by 48 publications

(13 citation statements)

References 33 publications

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“…Therefore, to avoid such losses, carbon-FRP wraps should be employed. [33][34][35][36] To date, a number of researchers have investigated several properties of RAC with notable reviews on RAC that proved to be much more effective in terms of durability and mechanical aspects. 5,[37][38][39][40][41][42] Different studies suggested a reduction in the COS by 10%-20% with enhancement in the substitution of natural coarse aggregates (NCA) by recycled coarse aggregates (RCA).…”

Section: Introductionmentioning

confidence: 99%

“…Progressive collapse of the structural elements of reinforced concrete enhances as the reinforcement deteriorates. Therefore, to avoid such losses, carbon‐FRP wraps should be employed 33–36 . To date, a number of researchers have investigated several properties of RAC with notable reviews on RAC that proved to be much more effective in terms of durability and mechanical aspects 5,37–42 .…”

Section: Introductionmentioning

confidence: 99%

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Effectiveness of FRP confinement for low strength recycled aggregate concrete compressive members having optimized combination of fibers

Raza,

Elhag,

Ouni

et al. 2023

Structural Concrete

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The quantity of recycled concrete aggregates is increasing day by day due to the enhanced demolition rate of old infrastructures, which is dangerous to the environment's sustainability. Therefore, it is essential to handle these recycled aggregates for sustainable development. Furthermore, due to the low compressive strength (COS) of recycled aggregate concrete (RAC), it has always remained an active research area to ameliorate the mechanical performance of such concrete by either adding fibers and/or laterally confining with carbon fiber reinforced polymer (carbon‐FRP) wraps. The main objective of the current investigation is to improve the strength of hybrid fiber‐reinforced recycled aggregate concrete (HFRAC) transversely wrapped with carbon‐FRP wraps. The axial COS, axial strain, and compressive stress–strain graphs of the tested samples were assessed by manufacturing a total sum of 18 cylindrical samples wrapped with either one or two carbon‐FRP wraps. Two different grades of HFRAC were fabricated that is, 15 and 20 MPa containing hybrid fibers (steel and polypropylene fibers). The results showed that the transverse wrapping effectively ameliorated the axial strain, COS, and axial stiffness of HFRAC samples. By using a single layer of carbon‐FRP wraps, an enhancement of 115.7% was observed while using two layers of carbon‐FRP wraps, an enhancement of 130.7% was observed in the COS of 15 MPa group HFRAC samples. Similarly, by using a single layer of carbon‐FRP wraps, an enhancement of 37.4% occurred while using two layers of carbon‐FRP wraps, an enhancement of 112.6% occurred in the COS of 20 MPa group HFRAC samples. Hence, the lateral wrapping of low‐strength HFRAC is more efficient than the high‐strength HFRAC. A theoretical investigation based on the analysis of 11 different models was also performed to predict the COS of carbon‐FRP‐wrapped HFRAC samples.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effectiveness of FRP confinement for low strength recycled aggregate concrete compressive members having optimized combination of fibers

Raza,

Elhag,

Ouni

et al. 2023

Structural Concrete

View full text Add to dashboard Cite

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“…This type of assembled building structure has been widely used in many foreign countries. Due to its stable quality, high production efficiency, and environmental protection, assembled concrete structures are increasingly attracting the attention of real estate developers, building construction companies, and designers in China [2]. At the same time, assembled concrete structures are not only an emerging green and energy-saving building structure but also an effective way to achieve sustainable development in housing construction [3].…”

Section: Introductionmentioning

confidence: 99%

Structural Assembly Analysis of Concrete Buildings with Intelligent Finite Element Analysis

et al. 2022

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In recent years, with the rapid development of China’s construction industry, assembled buildings have become more and more common. In this context, China attaches great importance to the development of assembled buildings and has introduced a series of policies to support the promotion of assembled buildings. Assembled building technology has become relatively mature in some developed countries. From their experience, it can be learned that the construction of an assembled concrete structure technology system is the basis for the promotion of assembled concrete buildings. A factory-based production model enables prefabricated concrete elements to be produced to a good quality. The key to the technical system for the construction of assembled concrete structures is the connection of the prefabricated elements. At the same time, it is essential to consider not only the reliability of the structural performance of the assembled concrete structure but also the cost and safety of the design, production, transport, and construction processes. In fact, the safety of an assembled concrete structure depends to a large extent on whether the nodal connection technology meets the design and quality requirements. Unlike conventional cast-in-place concrete structures, the key nodes of assembled concrete structures have a greater impact on the mechanical properties of the load transfer. In other words, this influence is directly related to the design of the prefabricated elements. Hence, the mechanical properties of precast nodal joints, such as good stiffness, are essential for the structural safety of assembled buildings. In the case of assembled buildings, the correct form of nodal connection is decisive in ensuring that the connection meets the design and service requirements. In addition to this, the correct nodal connection form will ensure that the design life is maintained. The uneven quality of many prefabricated components has limited the promotion of assembled concrete structures and is a key constraint to their development. At this stage, there are no uniform standards for quality control systems and measures on site in China, and the level of technical management is not yet fully mature. What is more, the overall quality of construction personnel is not high enough, which might lead to some frequent issues with the quality of connections in the field during the actual construction process. As a result, the development of assembled concrete structures urgently requires perfect construction management standards as a guide for on-site joint construction, so as to guarantee the quality level of on-site joint construction. In order to study the force performance of assembled concrete structures, this paper establishes an analytical model for assembled concrete buildings based on the intelligent finite element method. To be specific, this research introduces artificial neural network theory into the structural analysis of assembled buildings and transports it into the finite element solution, thus forming an intelligent finite element method.

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“…and extrinsic (severe environment, accidental loading [ 12 ], etc.) factors, concrete structures usually undergo deterioration during the whole lifespan, such as concrete cracking [ 13 ], steel corrosion [ 14 , 15 ], spalling [ 16 ], and structure collapse [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

Cement-Based Piezoelectric Ceramic Composites for Sensing Elements: A Comprehensive State-of-the-Art Review

Ding

Liu

Shiotani

et al. 2021

Sensors

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Compatibility, a critical issue between sensing material and host structure, significantly influences the detecting performance (e.g., sensitive, signal-to-noise ratio) of the embedded sensor. To address this issue in concrete-based infrastructural health monitoring, cement-based piezoelectric composites (piezoelectric ceramic particles as a function phase and cementitious materials as a matrix) have attracted continuous attention in the past two decades, dramatically exhibiting superior durability, sensitivity, and compatibility. This review paper performs a synthetical overview of recent advances in theoretical analysis, characterization and simulation, materials selection, the fabrication process, and application of the cement-based piezoelectric composites. The critical issues of each part are also presented. The influencing factors of the materials and fabrication process on the final performance of composites are further discussed. Meanwhile, the application of the composite as a sensing element for various monitoring techniques is summarized. Further study on the experiment and simulation, materials, fabrication technique, and application are also pointed out purposefully.

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Dynamic load test on progressive collapse resistance of fully assembled precast concrete frame structures

Cited by 48 publications

References 33 publications

Effectiveness of FRP confinement for low strength recycled aggregate concrete compressive members having optimized combination of fibers

Effectiveness of FRP confinement for low strength recycled aggregate concrete compressive members having optimized combination of fibers

Structural Assembly Analysis of Concrete Buildings with Intelligent Finite Element Analysis

Cement-Based Piezoelectric Ceramic Composites for Sensing Elements: A Comprehensive State-of-the-Art Review

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