Lattice Shear Reinforcement for Enhancement of Slab-Column Connections

Park, Hong-Gun; Kim, You-Ni; Song, Jin-Gyu; Kang, Su-Min

doi:10.1061/(asce)st.1943-541x.0000484

Cited by 29 publications

(15 citation statements)

References 4 publications

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“…The use of shear reinforcement internally anchored on flexural rebars could solve this construction issue, but in terms of research is a subject where little experimental evidence is available. The main results were provided by Yamada et al (1992), Gomes and Andrade (2000), Regan and Samadian (2001), Pilakoutas and Li (2003), Park et al (2007), Trautwein et al (2011) Furche (1997 Caldentey et al (2013) and Furche and Bauermeister (2014) and involve tests on slab-column connections. Results show that in such cases, loss of anchorage can lead to premature failures due to delamination.…”

Section: Latin American Journal Of Solids and Structures 13 (2016) 29mentioning

confidence: 94%

One-Way Shear Resistance of RC Members with Unconnected Stirrups

Ferreira

Barros

Filho

et al. 2016

Lat. Am. j. solids struct.

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This paper presents results of eight experimental tests carried to evaluate the mechanical performance of unconnected "W" stirrups.Reinforced concrete wide beams were tested and their characteristics were idealized to represent column strips in flat slab buildings. The main variables were: the type of shear reinforcement; the shear span to effective depth ratio (av/d); and the flexural (ρl) and shear (ρw) reinforcement ratios. In general, both the response and the shear resistance of the structural elements with unconnected "W" stirrups was similar to those elements with vertical closed stirrups. Increments of shear resistance of up to 84% were achieved, indicating that they have high potential for use as shear reinforcement in slab-column connections.

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Section: Latin American Journal Of Solids and Structures 13 (2016) 29mentioning

confidence: 94%

One-Way Shear Resistance of RC Members with Unconnected Stirrups

Ferreira

Barros

Filho

et al. 2016

Lat. Am. j. solids struct.

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“…선행연구 [12]에서 스터드레일과 전단철근을 이용한 전단보강공법에 대하여 주기하중 실험을 하였다. 실험체 의 크기와 슬래브 구속은 3.2.1절의 실험과 대체로 유사 하며 결과는 Figure 9, Table 2와 같다.…”

Section: 기존 공법과 구조성능 비교unclassified

Development and Application of Lattice Shear Reinforcement for Flat Plate Slab-column Connection

Kang¹,

Park²,

Bang³

et al. 2013

Journal of the Korea Institute of Building Construction

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Although the flat plate system is an efficient structural type due to the simplicity of its construction, the low story height, and the various plan design, the slab-column connections are vulnerable to punching shear failure from gravity load and eccentric shear failure from lateral load. To prevent the structure collapse, various construction methods of slab-column connection reinforcement are developed but none of these satisfies all of structural performance, economics, and constructability. This paper presents the reinforcement of slab-column connection with lattice bars. The structural performance is confirmed with the interior slab-column connection tests subjected to cyclic loading, and the economic feasibility is demonstrated from the structural design under the same condition with lattice bars, stud rails, and stirrups.

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“…Flat-plate slabs are widely used as a structural floor system for residential and commercial buildings, as they feature reduced floor height, flat soffits and simple formwork, which can speed up construction and reduce material and labor consumption (Wight and MacGregor, 2009). In contrast to these advantages, flat-plate slabs generally have low flexural stiffness compared with the conventional concrete slab-beam system and are susceptible to brittle punching shear failure (Park et al, 2012). Punching shear failure involves a truncated cone or pyramid-shaped surface around the column and can cause severe damage to the entire structure; thus, it is important to design flat-plate slabs so that abrupt punching failures never occur at the load level well below the slab's flexural strength (Pilakoutas and Li, 2003).…”

Section: Introductionmentioning

confidence: 99%

Effects of openings on the punching shear strength of RC flat‐plate slabs without shear reinforcement

Lee

Park

et al. 2015

Structural Design Tall Build

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SUMMARYOpenings in RC flat-plate slabs are one of the critical factors that influence the punching shear strength of the slab and determine its thickness in the vicinity of the slab-column joint. This study experimentally investigates the effects of openings on the punching shear strength of flat-plate slabs without shear reinforcement. Tests were performed on eight flat-plate slab specimens considering the layout and number of openings as test variables. The failure characteristics of each specimen are examined, and the effects of the test variables on the punching shear strengths of the test specimens are investigated. The measured punching shear strengths of the test specimens are compared with the predictions of several concrete design codes, including the American Concrete Institute (ACI), Comité Euro-International du Béton and Fédération Internationale de la Précontrainte (CEB-FIP) model and fédération internationale du béton (fib) model codes. This indicates that the reductions in punching shear strength due to the existence of openings are generally proportional to the loss of effective critical sections, and an L-shaped opening layout around the corner of the column may further reduce the punching shear strength and may contribute to the loss of effective critical sections due to the existence of openings.

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Lattice Shear Reinforcement for Enhancement of Slab-Column Connections

Cited by 29 publications

References 4 publications

One-Way Shear Resistance of RC Members with Unconnected Stirrups

One-Way Shear Resistance of RC Members with Unconnected Stirrups

Development and Application of Lattice Shear Reinforcement for Flat Plate Slab-column Connection

Effects of openings on the punching shear strength of RC flat‐plate slabs without shear reinforcement

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