Experimental investigation on alternate load path mechanisms in double-span beams with unsymmetrical span length and reinforcement detailing

Namyo Salim Lim; Anh Tuan Pham; Kang Hai Tan

Experimental investigation on alternate load path mechanisms in double-span beams with unsymmetrical span length and reinforcement detailing

Namyo Salim Lim, Anh Tuan Pham^*, Kang Hai Tan^*

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In the design and assessment of reinforced concrete (RC) structure against progressive collapse via single column removal scenario, also known as “alternate load path method”, development of secondary mechanisms, i.e. compressive arch action (CAA) and catenary action (CA) in double-span beams has been investigated and identified in many previous researches. The majority of the experimental tests are conducted on symmetrical double-span beams (identical span length and reinforcement detailing at both beam span). However, variations in details of beams adjacent to one another are not uncommon in RC building designs and constructions. Hence, a research study (as presented in this paper) with total of 5 RC frame tests are conducted to investigate the development of secondary mechanisms (CAA and CA) in a double-span beam with unsymmetrical 1) span length and 2) beam detailing. For each unsymmetrical case (span length and beam detailing), there will be 1 unsymmetrical double-span beam, and 2 symmetrical double-span beams (each representing one side of the unsymmetrical double-span beam) to serve as reference for quantifying the development of secondary mechanism in unsymmetrical double-span beams. The behaviour and development of secondary mechanisms are thoroughly analysed based on test observation, measured forces and displacements, etc.

Original language	English
Title of host publication	Concrete Innovations in Materials, Design and Structures - Proceedings of the fib Symposium, 2019
Editors	Wit Derkowski, Piotr Gwozdziewicz, Lukasz Hojdys, Piotr Krajewski, Marek Pantak
Publisher	fib. The International Federation for Structural Concrete
Pages	1303-1314
Number of pages	12
ISBN (Print)	9782940643004
Publication status	Published - 2019
Externally published	Yes
Event	International fib Symposium on Concrete Innovations in Materials, Design and Structures, 2019 - Kraków, Poland Duration: May 27 2019 → May 29 2019

Publication series

Name	fib Symposium
ISSN (Print)	2617-4820

Conference

Conference	International fib Symposium on Concrete Innovations in Materials, Design and Structures, 2019
Country/Territory	Poland
City	Kraków
Period	5/27/19 → 5/29/19

Bibliographical note

Publisher Copyright:
© fédération internationale du béton (fib). This document may not be copied or distributed without prior permission from fib.

ASJC Scopus Subject Areas

Civil and Structural Engineering
Building and Construction
Materials Science (miscellaneous)

Keywords

Detailing
Experimental
Progressive collapse
Span-length
Unsymmetrical double-span beams

Cite this

Lim, N. S., Pham, A. T., & Tan, K. H. (2019). Experimental investigation on alternate load path mechanisms in double-span beams with unsymmetrical span length and reinforcement detailing. In W. Derkowski, P. Gwozdziewicz, L. Hojdys, P. Krajewski, & M. Pantak (Eds.), Concrete Innovations in Materials, Design and Structures - Proceedings of the fib Symposium, 2019 (pp. 1303-1314). (fib Symposium). fib. The International Federation for Structural Concrete.

Lim, Namyo Salim ; Pham, Anh Tuan ; Tan, Kang Hai. / Experimental investigation on alternate load path mechanisms in double-span beams with unsymmetrical span length and reinforcement detailing. Concrete Innovations in Materials, Design and Structures - Proceedings of the fib Symposium, 2019. editor / Wit Derkowski ; Piotr Gwozdziewicz ; Lukasz Hojdys ; Piotr Krajewski ; Marek Pantak. fib. The International Federation for Structural Concrete, 2019. pp. 1303-1314 (fib Symposium).

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title = "Experimental investigation on alternate load path mechanisms in double-span beams with unsymmetrical span length and reinforcement detailing",

abstract = "In the design and assessment of reinforced concrete (RC) structure against progressive collapse via single column removal scenario, also known as “alternate load path method”, development of secondary mechanisms, i.e. compressive arch action (CAA) and catenary action (CA) in double-span beams has been investigated and identified in many previous researches. The majority of the experimental tests are conducted on symmetrical double-span beams (identical span length and reinforcement detailing at both beam span). However, variations in details of beams adjacent to one another are not uncommon in RC building designs and constructions. Hence, a research study (as presented in this paper) with total of 5 RC frame tests are conducted to investigate the development of secondary mechanisms (CAA and CA) in a double-span beam with unsymmetrical 1) span length and 2) beam detailing. For each unsymmetrical case (span length and beam detailing), there will be 1 unsymmetrical double-span beam, and 2 symmetrical double-span beams (each representing one side of the unsymmetrical double-span beam) to serve as reference for quantifying the development of secondary mechanism in unsymmetrical double-span beams. The behaviour and development of secondary mechanisms are thoroughly analysed based on test observation, measured forces and displacements, etc.",

keywords = "Detailing, Experimental, Progressive collapse, Span-length, Unsymmetrical double-span beams",

author = "Lim, {Namyo Salim} and Pham, {Anh Tuan} and Tan, {Kang Hai}",

note = "Publisher Copyright: {\textcopyright} f{\'e}d{\'e}ration internationale du b{\'e}ton (fib). This document may not be copied or distributed without prior permission from fib.; International fib Symposium on Concrete Innovations in Materials, Design and Structures, 2019 ; Conference date: 27-05-2019 Through 29-05-2019",

year = "2019",

language = "English",

isbn = "9782940643004",

series = "fib Symposium",

publisher = "fib. The International Federation for Structural Concrete",

pages = "1303--1314",

editor = "Wit Derkowski and Piotr Gwozdziewicz and Lukasz Hojdys and Piotr Krajewski and Marek Pantak",

booktitle = "Concrete Innovations in Materials, Design and Structures - Proceedings of the fib Symposium, 2019",

}

Lim, NS, Pham, AT & Tan, KH 2019, Experimental investigation on alternate load path mechanisms in double-span beams with unsymmetrical span length and reinforcement detailing. in W Derkowski, P Gwozdziewicz, L Hojdys, P Krajewski & M Pantak (eds), Concrete Innovations in Materials, Design and Structures - Proceedings of the fib Symposium, 2019. fib Symposium, fib. The International Federation for Structural Concrete, pp. 1303-1314, International fib Symposium on Concrete Innovations in Materials, Design and Structures, 2019, Kraków, Poland, 5/27/19.

Experimental investigation on alternate load path mechanisms in double-span beams with unsymmetrical span length and reinforcement detailing. / Lim, Namyo Salim; Pham, Anh Tuan; Tan, Kang Hai.
Concrete Innovations in Materials, Design and Structures - Proceedings of the fib Symposium, 2019. ed. / Wit Derkowski; Piotr Gwozdziewicz; Lukasz Hojdys; Piotr Krajewski; Marek Pantak. fib. The International Federation for Structural Concrete, 2019. p. 1303-1314 (fib Symposium).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Experimental investigation on alternate load path mechanisms in double-span beams with unsymmetrical span length and reinforcement detailing

AU - Lim, Namyo Salim

AU - Pham, Anh Tuan

AU - Tan, Kang Hai

N1 - Publisher Copyright: © fédération internationale du béton (fib). This document may not be copied or distributed without prior permission from fib.

PY - 2019

Y1 - 2019

N2 - In the design and assessment of reinforced concrete (RC) structure against progressive collapse via single column removal scenario, also known as “alternate load path method”, development of secondary mechanisms, i.e. compressive arch action (CAA) and catenary action (CA) in double-span beams has been investigated and identified in many previous researches. The majority of the experimental tests are conducted on symmetrical double-span beams (identical span length and reinforcement detailing at both beam span). However, variations in details of beams adjacent to one another are not uncommon in RC building designs and constructions. Hence, a research study (as presented in this paper) with total of 5 RC frame tests are conducted to investigate the development of secondary mechanisms (CAA and CA) in a double-span beam with unsymmetrical 1) span length and 2) beam detailing. For each unsymmetrical case (span length and beam detailing), there will be 1 unsymmetrical double-span beam, and 2 symmetrical double-span beams (each representing one side of the unsymmetrical double-span beam) to serve as reference for quantifying the development of secondary mechanism in unsymmetrical double-span beams. The behaviour and development of secondary mechanisms are thoroughly analysed based on test observation, measured forces and displacements, etc.

AB - In the design and assessment of reinforced concrete (RC) structure against progressive collapse via single column removal scenario, also known as “alternate load path method”, development of secondary mechanisms, i.e. compressive arch action (CAA) and catenary action (CA) in double-span beams has been investigated and identified in many previous researches. The majority of the experimental tests are conducted on symmetrical double-span beams (identical span length and reinforcement detailing at both beam span). However, variations in details of beams adjacent to one another are not uncommon in RC building designs and constructions. Hence, a research study (as presented in this paper) with total of 5 RC frame tests are conducted to investigate the development of secondary mechanisms (CAA and CA) in a double-span beam with unsymmetrical 1) span length and 2) beam detailing. For each unsymmetrical case (span length and beam detailing), there will be 1 unsymmetrical double-span beam, and 2 symmetrical double-span beams (each representing one side of the unsymmetrical double-span beam) to serve as reference for quantifying the development of secondary mechanism in unsymmetrical double-span beams. The behaviour and development of secondary mechanisms are thoroughly analysed based on test observation, measured forces and displacements, etc.

KW - Detailing

KW - Experimental

KW - Progressive collapse

KW - Span-length

KW - Unsymmetrical double-span beams

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M3 - Conference contribution

AN - SCOPUS:85134799966

SN - 9782940643004

T3 - fib Symposium

SP - 1303

EP - 1314

BT - Concrete Innovations in Materials, Design and Structures - Proceedings of the fib Symposium, 2019

A2 - Derkowski, Wit

A2 - Gwozdziewicz, Piotr

A2 - Hojdys, Lukasz

A2 - Krajewski, Piotr

A2 - Pantak, Marek

PB - fib. The International Federation for Structural Concrete

T2 - International fib Symposium on Concrete Innovations in Materials, Design and Structures, 2019

Y2 - 27 May 2019 through 29 May 2019

ER -

Lim NS, Pham AT, Tan KH. Experimental investigation on alternate load path mechanisms in double-span beams with unsymmetrical span length and reinforcement detailing. In Derkowski W, Gwozdziewicz P, Hojdys L, Krajewski P, Pantak M, editors, Concrete Innovations in Materials, Design and Structures - Proceedings of the fib Symposium, 2019. fib. The International Federation for Structural Concrete. 2019. p. 1303-1314. (fib Symposium).

Experimental investigation on alternate load path mechanisms in double-span beams with unsymmetrical span length and reinforcement detailing

Abstract

Publication series

Conference

Bibliographical note

ASJC Scopus Subject Areas

Keywords

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Cite this