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http://dx.doi.org/10.14346/JKOSOS.2019.34.1.53

Reliability Analysis of Three-Dimensional Temporary Shoring Structures Considering Bracing Member and Member Connection Condition  

Ryu, Seon-Ho (Department of Civil, Safety and Environmental Engineering, Hankyong National University)
Ok, Seung-Yong (Department of Civil, Safety and Environmental Engineering & Construction Engineering Research Institute, Hankyong National University)
Kim, Seung-Min (Hankyung S&C Corporate Research Institute)
Publication Information
Journal of the Korean Society of Safety / v.34, no.1, 2019 , pp. 53-61 More about this Journal
Abstract
This study performs reliability analysis of three-dimensional temporary shoring structures with three different models. The first model represents a field model which does not have diagonal bracing members. The installation of bracing members is often neglected in the field for convenience. The second model corresponds to a design model which has the bracing members with the hinge connection of horizontal and bracing members at joints. The third model is similar to the second model but the hinge connection is replaced with partial rotational stiffness. The reliability analysis results revealed that the vertical members of the three models are safe enough in terms of axial force, but the vertical and horizontal members exhibit a big difference among the three models in terms of combination stress of axial force and bi-axial bending moments. The field model showed significant increase in failure probability for the horizontal member, and thus the results demonstrate that the bracing member should be installed necessarily for the safety of the temporary shoring structures.
Keywords
temporary shoring structures; reliability analysis; first-order reliability method; monte carlo simulation; failure probability;
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