Experimental Behavior and Design of Steel Plate Composite-to-Reinforced Concrete Lap Splice Connections

Seo, Jungil; Varma, Amit H.

doi:10.1061/(asce)st.1943-541x.0001711

Cited by 25 publications

(14 citation statements)

References 13 publications

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“…The parameters considered included: (i) the rebar size, (ii) shear reinforcement ratio, (iii) rebar embedment length into the SC wall, and (iv) location with respect to the steel faceplate. Seo and Varma [20] extended the experimental investigations by conducting additional full-scale tests to investigate the axial tension behavior of SC-to-RC non-contact lap splice connections. The experimental investigation focused on the influence of three different tie designs on their behavior.…”

Section: Sc Wall-to-rc Basemat Non-contact Lap Splicementioning

confidence: 99%

“…The construction of the AP1000 ® nuclear power plants and the research investigations described above suggest that SC walls have tremendous potential to serve as an alternative to conventional reinforced concrete (RC) walls while expediting construction; however, this potential can be achieved only when the SC walls are connected and the externally induced forces transferred successfully to the RC basemat. Three possible SC wall-to-RC basemat connection technologies have been described and identified [20,21], but it can still be challenging to design and detail connections between SC walls and RC basemat due to the complex and unclear force transfer mechanisms associated with the connections. This paper provides results from experimental and analytical investigations conducted on SC wall-to-RC basemat connections to evaluate their fundamental behavior and strength.…”

Section: Introductionmentioning

confidence: 99%

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SC Wall-to-RC Basemat Over-Strength Connection: Behavior and Design

2022

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This paper presents results from experimental and analytical investigations conducted to evaluate the lateral load behavior and capacity of steel-plate composite (SC) wall-to-reinforced concrete (RC) basemat connections. Two SC wall-to-reinforced concrete basemat connection specimens were tested. These SC wall specimens had a height-to-length ratio of 0.6 and did not include boundary elements. The experimental results include the lateral force-displacement (V-Δ) responses of the specimens and observations of local damage such as steel plate local buckling and concrete crushing. 3D finite element models were developed and benchmarked using the experimental results. The benchmarked models were used to conduct analytical parametric studies, expand the database, and gain additional insights into the behavior of SC wall-to-RC basemat connections. The parameters included in analytical investigations were the wall aspect ratio (h/lw), reinforcement ratio (ρ), and wall thickness (T).

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Section: Sc Wall-to-rc Basemat Non-contact Lap Splicementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

SC Wall-to-RC Basemat Over-Strength Connection: Behavior and Design

2022

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“…Some recommendations were presented for designing this wall‐basemat connection by testing and numerical modeling three specimens. [ 20 ]…”

Section: Introductionmentioning

confidence: 99%

Numerical study on split base plate connection with concentric anchors between steel‐plate composite wall and concrete basemat

Sadeghi

Mirghaderi

Epackachi

et al. 2022

Structural Design Tall Build

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Steel-plate composite (SC) walls can be connected to a concrete basemat using a base plate and a set of anchors eccentric to the wall. The base plate can be separated into two parts so that the concrete of the wall and basemat is cohesive, and thus, the wall can be manufactured more easily and economically. Additionally, compression and shear demand are directly transferred from infill concrete to concrete basemat.Another change in the base plate connection of available tested walls involves transferring anchors to the bottom of faceplates. As a result of this modification, the base plate is removed from the force transmission chain, and the force is transferred directly from the wall to the anchors. After presenting the design criteria for this type of connection, three test walls with concrete foundations were verified in LS-Dyna.The walls were modeled with a split base plate connection and concentric anchors, and then compared to other types of wall-basemat connections. Three rectangular sections were then chosen as benchmarks and modeled with three anchors of different sizes to evaluate the effect of this parameter on walls behavior. The design equations presented for the single base plate connection were found applicable to design split base plate connections. Then all walls were compared to the test wall-fixed base wall connection. Finally, the models were analyzed with elastic walls to determine whether the foundation is stronger than the wall. The split base plate connection with concentric anchors was found to be stronger than connected parts and can be an alternative to existing connections.concentric anchors, concrete basemat, rectangular steel-plate composite walls, split base plate connection | INTRODUCTION AND BACKGROUNDSteel-plate composite (SC) walls are introduced as a lateral force resisting system in ASCE 7. [1] SC walls consist of two steel faceplates with concrete fill between the plates, with or without boundary elements. Tie bars or a combination of tie bars and shear studs can be used to achieve the composite action between the plates and concrete fill. An SC wall can be used when a relatively large seismic demand on the walls leads to dense reinforcement and large thicknesses in conventional concrete shear walls or relatively large wall thicknesses of the web infill and boundary elements in special plate shear walls. [2] SC walls correct the defects of steel plate shear walls. [3]

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“…The anchor method, using rebar anchors and base plates has been investigated by large-scale tests, and the direct shear strength of rebar-coupler anchor systems were proposed [18]. The dowel method, later named as lap-splice connection by Seo et al [19], is feasible for construction where the dowel rebars inserting upwards into the SC wall and extending downwards into the RC foundation, as the tensile strength of the lap-splice connections have been studied [19][20][21]. Kurt et al [22] first experimentally investigated the behavior of SC wall-tofoundation lap-splice connection under cyclic lateral force without considering the effect of axial compression force.…”

Section: Introductionmentioning

confidence: 99%

In‐plane Seismic Performance of SC wall to foundation connections

Wang

Zhou

Xu³

et al. 2021

ce papers

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Steel‐plate composite (SC) structures have been studied and used in nuclear power plants since the 1990s. However, the seismic performance of the connection between SC wall and foundation has not drawn adequate attention. In this paper, four large‐scale SC‐wall‐to‐foundation connections were designed and tested under combined constant axial‐compression and cyclic in‐plane lateral‐force. Two types of construction details were considered, namely lap‐splice and embed‐ding. Through the general observations, all the specimens failed by flexure, as the crushing of concrete, yielding of dowel rebars or steel plates occurred. The in‐plane seismic performance of the connections including the load‐carrying capacity and ductility were summarized and analyzed. The existing equations for calculating the shear and flexural strength of SC walls subjected to in‐plane loading were evaluated with test results. Since test results show that both of the connection types are feasible for practical use, further investigations on the design of lap‐splice and embedding connections were recommended.

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Experimental Behavior and Design of Steel Plate Composite-to-Reinforced Concrete Lap Splice Connections

Cited by 25 publications

References 13 publications

SC Wall-to-RC Basemat Over-Strength Connection: Behavior and Design

SC Wall-to-RC Basemat Over-Strength Connection: Behavior and Design

Numerical study on split base plate connection with concentric anchors between steel‐plate composite wall and concrete basemat

In‐plane Seismic Performance of SC wall to foundation connections

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