A study on the resistance of SC walls subjected to missile impact using large-scale impact tests

Kim, Kapsun; Lee, Kyungkoo; Shin, Jinwon; Lee, Jaegon; Varma, Amit H.

doi:10.1016/j.ijimpeng.2020.103507

Cited by 11 publications

(2 citation statements)

References 4 publications

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“…Although terrorist attacks have escalated in recent decades, impact analysis has become critical to guarantee that buildings are secure. Impact loading scenarios include the influence of falling items on industrial flooring [ 2 ], impacts from a ship or ice collisions on the seafloor and offshore structures [ 3 ], accidents involving vehicles and bridges or structures [ 4 ] and nuclear containment facilities that are affected by airplanes and missiles [ 5 ]. As a result of the confined and transitory nature of impact loading, structural elements exposed to it may react differently from those under a static load.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Analytical Modeling of Flexural Impact Strength of Preplaced Aggregate Fibrous Concrete Beams

2022

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Preplaced aggregate fibrous concrete (PAFC) is a revolutionary kind of concrete composite that is gaining popularity and attracting the interest of academics from across the world. PAFC is a uniquely designed concrete prepared by stacking and packing premixed fibers and coarse aggregate in a steel mold. The gaps between the fibers and aggregates are subsequently filled by injecting a cement grout with high flowability. This study investigates the impact performance of three different sizes of PAFC beams. Steel and polypropylene fibers were used in a 3% dosage to make three different beam sizes, measuring 550 × 150 × 150 mm, 400 × 100 × 100 mm, and 250 × 50 × 50 mm. According to ACI Committee 544, all beams were subjected to a drop weight flexural impact test. Compressive strength, impact energies at initial crack and failure, ductility index, and failure mode were evaluated. Additionally, analytical modeling was used to compute the failure impact energy for the fibrous beams. The results showed that the addition of fibers increased the capacity of the tested beams to absorb greater flexural impact energy. Compared to polypropylene fibers, steel fibers had better crack propagation and opening resistance because of their higher tensile strength and crimped and hooked end configuration. For all large-size beams, the analysis of the percentage increase in impact energy at the failure stages was found to be 5.3 to 14.6 times higher than the impact energy at cracking.

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Section: Introductionmentioning

confidence: 99%

Experimental and Analytical Modeling of Flexural Impact Strength of Preplaced Aggregate Fibrous Concrete Beams

2022

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“…Shear connectors provide composite action, whereas tie bars provide structural integrity and serve as out-of-plane reinforcement. Significant experimental and analytical research has been conducted around the world on the behavior and design of SC walls over the last two decades for various force demands including in-plane shear (Ozaki et al, 2004;Lee et al, 2009;Song et al, 2014;Bhardwaj et al, 2019), out-of-plane flexure and shear (McKinley and Boswell, 2002;Foundoukos and Chapman, 2008;Hong et al, 2009;Leng et al, 2015;Sener et al, 2015), axial compression (Takeuchi et al, 1998;Choi and Han, 2009;Zhang et al, 2020), and impact loading (Bruhl et al, 2015a;Kim et al, 2020). The results from some of the aforementioned and other research programs have been used to develop design specifications and aids such as JEAC-4618 (JEAC, 2009), KEPIC-SNG (KEA, 2010), AISC N690 (AISC, 2018), AISC Design Guide 32 Varma, 2017), andAISC 341-16 (AISC, 2016).…”

Section: Introductionmentioning

confidence: 99%

Steel-Plate Composite Wall-to-Reinforced Concrete Wall Mechanical Connection-Part 1: Out-of-Plane Flexural Strength

Seo,

Anwar,

Varma

et al. 2022

Eng J

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In safety-related nuclear structures, steel-plate composite (SC) walls are often used in combination with reinforced concrete (RC) walls or foundations. Appropriate connections are required to transfer force demands from the SC walls to the RC components without the connection failure that is often associated with brittle failure mode. This paper presents a design procedure developed for mechanical connections between SC and RC walls. This procedure implements the full-strength connection design approach in ANSI/AISC N690-18, Specification for Safety-Related Steel Structures for Nuclear Facilities, which requires connections to be stronger than the weaker of the connected walls. This paper also presents the results from experimental and analytical investigations conducted to verify the structural performance of the full-strength SC-to-RC connection. The focus of this paper (Part 1) is on the evaluation of the performance, strength, and ductility of SC wall–to–RC wall mechanical connections subjected to out-of-plane flexure. The results include global force-displacement responses, observations on concrete crack propagation, as well as applied force-strain responses of the connection region. The experimentally observed and analytically predicted results verify the conservatism of the proposed design procedure.

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Overview of Concrete-Filled Composite Plate Shear Wall Systems for Mid- and High-Rise Buildings

Froozanfar,

Moradi,

Kianoush

2024

Lecture Notes in Civil Engineering

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A study on the resistance of SC walls subjected to missile impact using large-scale impact tests

Cited by 11 publications

References 4 publications

Experimental and Analytical Modeling of Flexural Impact Strength of Preplaced Aggregate Fibrous Concrete Beams

Experimental and Analytical Modeling of Flexural Impact Strength of Preplaced Aggregate Fibrous Concrete Beams

Steel-Plate Composite Wall-to-Reinforced Concrete Wall Mechanical Connection-Part 1: Out-of-Plane Flexural Strength

Overview of Concrete-Filled Composite Plate Shear Wall Systems for Mid- and High-Rise Buildings

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