Advanced Steel Construction

Vol. 11, No. 2, pp. 211-222 (2015)


 EVALUATION FOR EARTHQUAKE-RESISTANT CAPABILITY OF UN-LANDING STEEL ARCH

 

Qinghua Han1,2, Yan Lu 1,2* and Qiuhong Zhao 1,2

1School of Civil Engineering, Tianjin University, Tianjin 300072, China;

2Key Laboratory of Coast Structure Safety (Tianjin University), Ministry of Education, Tianjin 300072, China

*(Corresponding author: E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.)

Received: 31 October 2013; Revised: 5 September 2014; Accepted: 29 September 2014

 

DOI:10.18057/IJASC.2015.11.2.5

 

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ABSTRACT

This paper presents research results on the earthquake-resistant capability of the un-landing steel arch. A shaking table test of an un-landing solid-web steel arch was carried out to present the seismic behavior. During the shaking table test, the acceleration response at the arch-top is largest. The maximum displacement response and the maximum stress at the quarter point of the arch is larger than other test points. The added braces could effectively help decreasing the displacement and deformation of the un-landing steel arch. The seismic response under the Tianjin wave is the largest while that under the Loma Prieta wave is the least, since the predominant frequency of the Tianjin wave is closest to the fundamental frequency of the model. Then IDA approach is applied in the un-landing steel arch. A single IDA curve is plotted, which fits the test result. By the IM-based rule, the capacity point of the structure is acquired. Finally, the earthquake-resistant capability of the un-landing latticed steel tubular arch is evaluated by the multi-record IDA study from a real project. A suite of records by having mean, 16%, 84% fractiles is summarized.

 

KEYWORDS

Un-landing steel arch, earthquake-resistant capability, shaking table test, IDA approach, capacity point


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