5-7 December 2018 - Hong Kong, China

CONFERENCE PAPERS

Ninth International Conference on Advances in Steel Structures (ICASS 2018)


SAFETY INVESTIGATION OF SRC STRUCTURES IN CONSTRUCTION

 

Juilin Peng 1*, Chungming Ho 1, Chungsheng Wang 1 and Siulai Chan 2

1 Department of Civil and Construction Engineering, National Yunlin University of Science & Technology, Yunlin, Taiwan, ROC

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2 Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China

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DOI:10.18057/ICASS2018.P.046

ABSTRACT:

The steel reinforced concrete (SRC) structure combines the advantages of the steel structure and the reinforced concrete structure. The steel reinforced concrete structure links reinforced concretes with steels to increase the toughness, shockproof and fire resistance of the structure. In recent years, some building cases with high securities and seismic requirements in Taiwan have been designed by the steel reinforced concrete structure. However, an unexpected construction load is placed on the steel reinforced concrete structure if the construction process of hoisting steels is not correct during the construction. This makes the steel reinforced concrete structure prone to collapse. The study investigates the safety of a case of collapse of steel reinforced concrete structure during construction in Taiwan. Two kinds of analysis methods are used in this study, which are the second-order analysis and the simplified model analysis of composite columns. The results of the study show that the second-order analysis confirms that the designer failed to account for the staged load generated during the construction of steel reinforced concrete structure. This causes the overall weight of the upper steel components to reach the critical load of the lower columns, inducing the buckling of the substructure system. Then after being slightly disturbed, the overall steel reinforced concrete structure collapsed instantly. The simplified model analysis of composite columns shows that when the construction procedure of the steel reinforced concrete structure follows that of the steel structure, the steel reinforced concrete structure may fail during construction. If workers continuously lift steel beams and columns regardless of the construction process of the lower reinforced concrete beams and columns, the weight of the upper steel components of the whole structure may exceed the critical load of the lower structure and then the whole structure collapses. In order to avoid the collapse of steel reinforced concrete structure during the construction process, safety assembly procedures of the steel reinforced concrete structure should be formulated prior to its construction. Thus, the installation of steel beams and columns can be perfectly combined with the operation of reinforced concrete.

Keywords:

Buckling; Construction; Critical load; Steel reinforced concrete (SRC) structure

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IMPORTANT DATES

First call for paper:
1 January 2018
Abstract submission: (CLOSED)
1 April 2018
Notification of abstract acceptance:
on or before 16 April 2018 
Full paper submission: 
15 July 2018
Online Registration Begins:
1 August 2018
Notification of full paper acceptance:
31 August 2018
Early bird registration:
on or before 7 September 2018
Online Registration Closes:
31 October 2018
Announcement of programme:
1 November 2018
ICASS2018 December 05, 2018 08:00 AM