Ultrahigh-Performance Concrete for Posttensioned Precast Bridge Piers for Seismic Resilience

Yang, Cancan; Okumus, Pinar

doi:10.1061/(asce)st.1943-541x.0001906

Cited by 70 publications

(21 citation statements)

References 25 publications

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“…Based on the opinions put forward by Naito et al (2010), inferior corrosion resistance of the beams can be treated as the primary reason for a series of failures of precast concrete bridge systems. To help address performance defects and promote sustainable development, the building behavior needs to be monitored and the performance testing methods need to be further improved (Yang and Okumus, 2017). Similarly, cluster #5, 6, 9 and 12 also involve the behavior and performance correlative studies, including cost effective, sustainability, CO 2 reduction, seismic performance.…”

Section: Resultsmentioning

confidence: 99%

Exploring a body of knowledge for promoting the sustainable transition to prefabricated construction

Luo

Xue

Tan

et al. 2020

ECAM

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PurposeThis paper aimed to introduce a systematic body of knowledge via a scientometric review, guiding the sustainable transition from conventional construction to prefabricated construction. The construction industry currently faces a challenge to balance sustainable development and the construction of new buildings. In this context, one of the most recent debates is prefabricated construction. As an emerging construction approach, although existing knowledge makes contributions to the implementation of prefabricated construction, there is a lack of a comprehensive and in-depth overview of the critical knowledge themes and gaps.Design/methodology/approachThis study uses the scientometric analysis to review the state-of-the-art knowledge of prefabricated construction. It retrieved data from the Web of Science core collection database. CiteSpace software was used to conduct the analysis and visualization; three analysis methods identify the knowledge hotspots, knowledge domains and knowledge topics. Finally, according to integrating the hidden connections among results, a body of knowledge for prefabricated construction application can be inferred.FindingsThe results show that 120 knowledge hotspots, five critical knowledge domains and five prominent knowledge topics are vital for promoting implementation of prefabricated construction. Based on the afore analysis, a body of knowledge for prefabricated construction that can systematically cover a broad knowledge of prefabricated construction-related research and activities are integrated and proposed in this paper.Originality/valueBody of knowledge systematically covers a broad knowledge of prefabricated construction applications and is vital to guide researchers and practitioners to conduct related research and activities, thereby promoting the sustainable transition to prefabricated construction implementation.

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Section: Resultsmentioning

confidence: 99%

Exploring a body of knowledge for promoting the sustainable transition to prefabricated construction

Luo

Xue

Tan

et al. 2020

ECAM

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“…Generally, weakening results in lower force demand on the system together with increased displacement demand. To accommodate additional displacement demands and to ensure minimized damage, external confining mechanisms, damping mechanisms, advanced cementitious materials, or jacketing may be provided (Kam and Pampanin 2008;Kam and Pampanin 2010;Pampanin 2006;Yang and Okumus 2017;Yang et al 2019). Ireland et al (2007) selectively weakened RC shear walls through vertical and/or horizontal straight base cut and used external energy dissipaters to investigate the strength and residual drift of the retrofitted walls.…”

Section: Figure 1 Elevation View Of the Pre-retrofit Wall (Sw6)mentioning

confidence: 99%

Seismic Retrofit of Reinforced Concrete Shear Walls to Ensure Reparability

Basereh

Okumus

Aaleti

2020

Structures Congress 2020

Self Cite

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Many reinforced concrete (RC) buildings built before the adoption of modern seismic codes in high seismic regions need to be retrofitted to perform well in a major earthquake. This study introduces a new retrofit method for code-deficient reinforced concrete shear walls that are vulnerable to non-ductile failure modes due to improper detailing or lack of well-confined boundary elements. The retrofit method combines weakening of shear walls with a base cut and self-centering of the walls with the addition of external unbonded post-tensioned strands. The retrofitted walls are expected to have controlled rocking behavior as opposed to the original walls that undergo shear and flexure and are expected to have minimized damage caused by earthquakes resulting in shorter repair times and lower repair costs. Three-dimensional finite element models of pre-and post-retrofit shear walls under cyclic lateral loading were used to identify working details of the retrofit method. To transfer shear at base and minimize shear slip, shear keys and other non-straight wall base cut shapes were explored. The contribution of shear, flexure, and rocking to the global response were measured and compared for pre-and postretrofit walls. Results of analysis showed that rocking is the governing behavior for the retrofitted walls and contribution of shear to displacements decreased due to retrofit. Changes in residual displacements, energy dissipation, strength, and secant stiffness due to retrofit were documented.

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“…Three segmental hollow columns posttensioned with 15.2-mm diameter unbonded strands were tested by Yang and Okumus (2017). Normal concrete was used in all segments of the first tested column.…”

Section: Compressive Membersmentioning

confidence: 99%

A review on seismic behavior of ultra-high performance concrete members

Fang

Shi

et al. 2020

Advances in Structural Engineering

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Ultra-high performance concrete (UHPC) is a type of cementitious composite, and demonstrates very high compressive strength and good ductility. The favorable ductility and energy dissipation capacity of UHPC material make it possible to achieve excellent seismic performance in all kinds of structural members. The paper reviewed the recent progress on the seismic behavior of UHPC members, including flexural members (beams and plates), compressive members (columns and shear walls), joints (beam-column joints and plate-column joints), strengthening (strengthening for columns, shear walls and joints) and connections (bar lap splice and grout). A series of potential future researches on the seismic behavior of UHPC members were finally suggested for promotion of the application of UHPC in civil engineering.

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Ultrahigh-Performance Concrete for Posttensioned Precast Bridge Piers for Seismic Resilience

Cited by 70 publications

References 25 publications

Exploring a body of knowledge for promoting the sustainable transition to prefabricated construction

Exploring a body of knowledge for promoting the sustainable transition to prefabricated construction

Seismic Retrofit of Reinforced Concrete Shear Walls to Ensure Reparability

A review on seismic behavior of ultra-high performance concrete members

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