Effect of nonstructural mass on debris impact demands: Experimental and simulation studies

Aghl, P. Piran; Naito, Clay; Riggs, H. R.

doi:10.1016/j.engstruct.2015.01.048

Cited by 10 publications

(2 citation statements)

References 19 publications

(28 reference statements)

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“…More recent work was conducted to study the effect that supplemental uniform NSM attached to the debris has on the generated impact demands (Piran Aghl et al, 2015). Both experimental and numerical studies were carried out on a shipping container with uniform NSM mass.…”

Section: Introductionmentioning

confidence: 99%

A simplified model for estimating axial impact forces resulting from debris with non-uniform nonstructural mass

Aghl

Naito

Riggs

2016

Advances in Structural Engineering

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The impact forces resulting from the debris strikes during tsunami and flood events can lead to extreme damage to the structures located in inundation zones. It is important to estimate reliably such impact demands in order to design structures safely. This study is aimed to develop a simplified one-dimensional model to predict the impact force and duration for axial impact of the debris with non-uniformly distributed nonstructural mass. The focus herein is on in-air impact. An experimental study is carried out on a 6.1-m rectangular steel tube with different configurations of rigidly attached nonstructural mass under elastic response. A nonlinear dynamic finite element model of a steel tube with nonstructural mass is also developed and validated by comparing with the experimental data. Parametric studies are carried out to investigate the effect of nonlinearity on impact demands. The results reveal that the peak impact force is sensitive to the location of the nonstructural mass. It is also observed that the peak impact force is not affected by the magnitude of nonstructural mass during inelastic response. The experimental and simulation results are also used to assess the applicability of the simplified design-oriented one-dimensional model. It is found that the debris impact demands are well represented by the proposed one-dimensional model.

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Section: Introductionmentioning

confidence: 99%

A simplified model for estimating axial impact forces resulting from debris with non-uniform nonstructural mass

Aghl

Naito

Riggs

2016

Advances in Structural Engineering

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“…The average impact duration and effective constant stiffness are used to calculate the impact force equation from FEMA p-646 and ASCE 7-10. The effect debris attached with the nonstructural mass (NSM) and the maximum impact force and duration were investigated by [19]. Empty and loaded shipping containers were used in the experiments and to validate the results, a nonlinear dynamic finite element model was established.…”

Section: Impact Force Due To Debrismentioning

confidence: 99%

Mitigation of tsunami debris impact by fender structures for reinforced-concrete buildings

Tun¹

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The impact of large debris such as loaded shipping containers can cause significant damage to buildings at shorelines. In this study, the building and protection structures are connected with fenders to reduce the impact of large debris. The objective is to study the building with a fender structure that reduces the impact of the shipping container. For a fender structure, cone-shaped rubber fenders are used to absorb the impact energy. Various fender reactions are considered as a parameter to conduct the efficiency of the fender. Tsunami pushover analyses using the force-controlled and displacement-controlled methods are used to obtain the capacity of the building. The energy approach for shipping container impact is used to evaluate the resistance of the building. Capacity curves, energy absorptions, inter-story drift ratios of the buildings with and without fender structures are studied. The fender can effectively absorb the debris impact. A design recommendation is proposed for the building with a fender structure. It is found that fender yield forces in the fender structure is the key parameter for the performance of the main building. Then, a three-dimensional tsunami pushover analysis is conducted on the building with 6 fender units. It is found that building with fenders can effectively resist all types of shipping container impact cases.

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Review of resilience assessment of coastal bridges to extreme wave-induced loads

Qeshta

Hashemi

Gravina

et al. 2019

Engineering Structures

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Effect of nonstructural mass on debris impact demands: Experimental and simulation studies

Cited by 10 publications

References 19 publications

A simplified model for estimating axial impact forces resulting from debris with non-uniform nonstructural mass

A simplified model for estimating axial impact forces resulting from debris with non-uniform nonstructural mass

Mitigation of tsunami debris impact by fender structures for reinforced-concrete buildings

Review of resilience assessment of coastal bridges to extreme wave-induced loads

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