Reliability Analysis of Temporary Structures Considering Uncertainty in Rotational Stiffness at Member Joints 


Vol. 34,  No. 5, pp. 87-94, Oct.  2019
10.14346/JKOSOS.2019.34.5.87


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  Abstract

This study deals with the reliability analysis approach of the temporary structure that can consider the uncertainty in rotational stiffness at the joints of the members, for which the semi-rigid connections are modelled as rotational spring and its coefficient is treated as a random variable following uniform distribution. In addition, this study introduces a computational procedure of the effective length coefficient for more accurate buckling load according to connection conditions of the supporting members attached to the joint. From the results of this study, it can be seen that the failure probability of the joint-hinge model (Case 1) presented in the design standard is higher than that of the practical model (Case 5) considering the rotational stiffness at the joints. This implies that the design standard leads to a conservative design of the temporary structure. The results also confirmed that the failure probability of the vertical member, i.e., the most critical member, can be further reduced when the base connection is provided with a fixed end. The comparative results between FORM, SORM and MCS further demonstrated that FORM can have a high level of numerical efficiency while ensuring the accuracy of the solution, compared with SORM and MCS. Based on these results, the proposed approach can be used as an accurate and efficient reliability analysis method of the three dimensional temporary structure.

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  Cite this article

[IEEE Style]

류선호 and 옥승용, "Reliability Analysis of Temporary Structures Considering Uncertainty in Rotational Stiffness at Member Joints," Journal of the Korean Society of Safety, vol. 34, no. 5, pp. 87-94, 2019. DOI: 10.14346/JKOSOS.2019.34.5.87.

[ACM Style]

류선호 and 옥승용. 2019. Reliability Analysis of Temporary Structures Considering Uncertainty in Rotational Stiffness at Member Joints. Journal of the Korean Society of Safety, 34, 5, (2019), 87-94. DOI: 10.14346/JKOSOS.2019.34.5.87.

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