• Title/Summary/Keyword: temporary shoring structures

Search Result 2, Processing Time 0.022 seconds

Reliability Analysis of Three-Dimensional Temporary Shoring Structures Considering Bracing Member and Member Connection Condition (가새재 및 부재 연결 조건을 고려한 3차원 가설 동바리 구조물의 신뢰성 해석)

  • Ryu, Seon-Ho;Ok, Seung-Yong;Kim, Seung-Min
    • Journal of the Korean Society of Safety
    • /
    • v.34 no.1
    • /
    • pp.53-61
    • /
    • 2019
  • 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.

A Study on Standards for Components for Tied Post System Scaffolding and Shoring (조립형 비계 및 동바리 부재 기준에 관한 연구)

  • Moon, Seong-Oh;Lee, Sang-Yeol;Youn, Ye-Bin
    • Proceedings of the Korean Institute of Building Construction Conference
    • /
    • 2021.11a
    • /
    • pp.25-26
    • /
    • 2021
  • System scaffolding and shoring are temporary structures in which vertical members, horizontal members, bracing members and trusses are assembled and installed. In order to ensure quality and safety, the quality test shall be carried out in accordance with the Guidelines for Quality Management of Construction Works (MOLIT Notice No. 2020-750). The quality test method (national standard) for Components for tied post system scaffolding and shoring is based on the Korean standards (KS F 8021) and the Safety certification standards (MOEL Notice No. 2021-22). However, the two standards differ in some aspects such as performance standards and etc, so cause confusion when applying them on-site. In addition, the standard for truss are applied only to trusses for shoring and cannot be applied to trusses for scaffolding. Therefore, this study aims to unify the two national standards and establish realistic standards.

  • PDF