Imperial College London
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Dr Christian Malaga-Chuquitaype

Faculty of Engineering, Department of Civil and Environmental Engineering

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 5007c.malaga Website CV

 
 
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Assistant

 

Ms Ruth Bello +44 (0)20 7594 6040

 
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Location

 

322Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Kampas:2021:10.1016/j.engstruct.2020.111501,
author = {Kampas, G and Kalapodis, N and McLean, T and Malaga, Chuquitaype C},
doi = {10.1016/j.engstruct.2020.111501},
journal = {Engineering Structures},
pages = {1--20},
title = {Limit-state analysis of parabolic arches subjected to inertial loading in different gravitational fields using a variational formulation},
url = {http://dx.doi.org/10.1016/j.engstruct.2020.111501},
volume = {228},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - For thousands of years, arches have been used as durable structures that are easy to build and that rely on gravity for their inherent stability. Since then, many researchers and engineers have studied their stability either when subjected to gravity or inertial loading. Currently, given the Insight mission to Mars and the ambitious Artemis program to the Moon, it has become apparent that there will soon be the need to design and build the first resilient extraterrestrial structures and arches represent an ideal option for such structures. This paper focuses on the stability of parabolic arches with different embrace angles subjected to different levels of equivalent inertial loading in low-gravity conditions. The results are contrasted with the well-studied circular arches. More specifically, this investigation employs variational principles to identify the imminent mechanisms and numerical methods based on the limit thrust line concept in order to estimate the minimum required thickness of parabolic arches for a given loading and in different gravitational fields. The paper shows that although parabolic arches can be much more efficient than their circular counterparts for gravitational-only loading, this is not the case for different combinations of inertial loading and embrace angles where the opposite can be true. It highlights the dominant effect of low-gravity conditions on the minimum thickness requirements for both types of arches and considers the effect of a potential additional infill for shielding from radiation. Furthermore, this study reveals a self-similar behaviour, introduces a “universal” inertial loading and showcases through the use of master curves the areas where the parabolic arches are more efficient than the circular and the opposite. These areas can be used for the preliminary design of such structures. Additionally, the paper identifies hidden patterns associated with the developed mechanisms between the two different geometri
AU  - Kampas,G
AU  - Kalapodis,N
AU  - McLean,T
AU  - Malaga,Chuquitaype C
DO  - 10.1016/j.engstruct.2020.111501
EP  - 20
PY  - 2021///
SN  - 0141-0296
SP  - 1
TI  - Limit-state analysis of parabolic arches subjected to inertial loading in different gravitational fields using a variational formulation
T2  - Engineering Structures
UR  - http://dx.doi.org/10.1016/j.engstruct.2020.111501
UR  - https://www.sciencedirect.com/science/article/pii/S014102962034102X?via%3Dihub
UR  - http://hdl.handle.net/10044/1/85100
VL  - 228
ER  -
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