Seismic Performance Evaluation of Staggered Truss System by the Shape of Truss

Yoon-Soo Hong; Eun-Jong Yu; Chang-Soon Rha

doi:10.7734/COSEIK.2017.30.5.397

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Seismic Performance Evaluation of Staggered Truss System by the Shape of Truss 트러스 형태에 따른 스태거드트러스 골조시스템의 내진성능 평가

2017. pp. 397-404

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Abstract

The purpose of this study is to evaluate the seismic performance of Staggered Truss Frame(STF) system while changing a shape of truss. The model of this project is a office building of ten floors with Pratt, Howe, Warren, K and Vierendeel truss system applied on each model. Next step is to select the section of elements which satisfy the highest demand capacity ratio by structure design considering gravity load, earthquake load and wind load and then calculate natural period, base shear and story drifts. On the basis of these values, Capacity Spectrum Method(CSM) shows the plastic behavior of STF system such as performance point of Design Earthquake(DE) and Maximum Considered Earthquake(MCE), yield state, plastic hinge etc. to be compared with other truss systems. As a result, Vierendeel STF system especially was found to have the highest strength and stiffness to the corresponding earthquake and all the models for each truss shape fulfilled the target performance level.

Keywords

staggered truss

capacity spectrum method

performance point

plastic hinge

performance level

본 연구의 목적은 트러스의 형태를 바꿔가며 엇갈린 트러스(STF) 시스템의 내진성능을 평가하는 것이다. 예제 구조물은 10층의 철골조 사무실 건물이며, 시스템별로 각각 프랫트러스, 하우트러스, 와렌트러스, 케이트러스와 비렌딜트러스를 적용 하였다. 중력하중, 풍하중, 지진하중을 고려한 구조해석을 실시하여 부재에 높은 DCR을 만족하는 단면을 산정한 후 고유주 기, 밑면전단력과 층간변위를 산출하였다. 그 후, 역량스펙트럼법을 통해 1.2배의 설계지진(DE)과 최대고려지진(MCE)에 대 한 성능점을 산정하고, STF 시스템의 항복여부 및 소성힌지의 분포를 파악하여 구조기준에서 제시한 목표성능수준을 만족 하는지 살펴보았다. 평가 결과, 모든 시스템이 해당 목표성능수준을 만족하였으며, 시스템의 경제성 및 효율성을 따져보았을 때, PR10이나 VR10이 가장 적합한 것으로 나타났다.

키워드

스태거드트러스

역량스펙트럼법

성능점

소성힌지

내진성능수준

References

References

A Brazil, Staggered Truss System Proves Economical For Hotels, Modern Steel Construction, AISC. (2000)

Design Guide 14, Staggered Truss Framing Systems, AISC. (2000)

FEMA 450, NEHRP Recommended Provisions for Seismic Regulations for New Buildings and Other Structures, Building Seismic Safety Coucil. (2003)

KBC 2016, Korean Building Code–Structural, AIK. (2016)

J Kim and J Lee, Paper No.164, Seismic Behaviour of Staggered Truss Systems1st ECEES, Geneva, Switzerland (2006)

J Kim and J Lee, J. Earthq. Eng. Soc. Korea, Seismic Improvement of Staggered Truss Systems using Buckling Restrained Braces, 10(2); 11-19 (2006)

10.5000/EESK.2006.10.2.011

RJ McNamara, Aladdin Hotel, Modern Steel Construction, AISC. (1999)

Midas IT, Midas, Gen Analysis Manual (2016)

S Metz, Staggered Home, Modern Steel Construction, AISC. (2012)

C Rha, J. Inst. Archi. & Urban Studies KMU, A Case Study on Structural Feature of Staggered Truss Frame System (2017)

C Rha, Y Hong and E Yu, J. Comput. Struct. Eng. Inst. Korea, A Study on the Structural Behaviour of Staggered Truss System by the Shape of Truss, 30(3); 199-206 (2017)

10.7734/COSEIK.2017.30.3.199

JB Scalzi, Eng. J. AISC, The Staggered Truss System-Structural Considerations; 138-143 (1971)

Information

Publisher :Computational Structural Engineering Institute of Korea
Publisher(Ko) :한국전산구조공학회
Journal Title :Journal of the Computational Structural Engineering Institute of Korea
Journal Title(Ko) :한국전산구조공학회 논문집
Volume : 30
No :5
Pages :397-404
Received Date : 2017-07-26
Revised Date : 2017-10-10
Accepted Date : 2017-10-16
DOI :https://doi.org/10.7734/COSEIK.2017.30.5.397

Journal of the Computational Structural Engineering Institute of Korea ISSN:1229-3059(Print) 2287-2302(Online) 한국전산구조공학회 논문집

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