Plain And Reinforced Concrete Arches

Steinman, D. B.; Melan, J.

doi:10.14359/8543

Cited by 3 publications

(1 citation statement)

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“…B. Mander, 1988) , Kent and Park, (1971) (Kent, D.C., and Park, 1971), Cusson-Paultre, 1995 (Cusson, D., andPaultre, 1995) and Hong-Hang Model (Suzuki et al, 2004).etc., and for steel (Indian Standard, 2000), (CP 110, 1972). In various codal provisions ((ACI Standard, 2014), (Thomas, 1990)) stress-strain curve of the concrete material has an initial parabolic ascending portion until strain of 0.002 followed by linearly descending portion which is sometimes even idealized as a straight line until the ultimate strain of 0.0035 (Indian Standard, 2000). Cusson-Paultre, 1995 (Cusson, D., and Paultre, 1995) and Hong-Hang Model,2005(Suzuki et al, 2004.proposed stress-strain model for high strength concrete.…”

Section: Materials Modelmentioning

confidence: 99%

Investigation of Confinement Effects for Determining Moment Curvature and Interaction Diagram of Reinforced Concrete Column

Bhusal

Paudel

Katuwal

2020

Tech J

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This paper presents the relevance of using various material models to represent the inherent material non-linearity of the cross-section in generating moment curvature relationship. Further, confinement effects are imposed on geometry and P-M diagram is constructed of typical cross-section of column adopted in Nepal. Also, the modelling capability and user defined modelling aspects in terms of section, material behavior is assessed and suitability of modelling criteria to depict the actual displacement capacity is studied. It was observed the ultimate curvature of the un-confined concrete section considered was obtained approximately to be 0.16 per m while for studied confined material models the curvature was obtained approximately to be 0.66 per m. This increase in curvature is due to the confinement effect of the lateral ties. It was observed that the loss of strength of concrete in cover is compensated by use of the confinement since gain in axial and bending capacity of the confined concrete in comparison to unconfined one in compression control region. Hence, it is suggested to adopt the confined material model as user-defined for generating hinge property for non-linear analysis of the structures.

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Section: Materials Modelmentioning

confidence: 99%

Investigation of Confinement Effects for Determining Moment Curvature and Interaction Diagram of Reinforced Concrete Column

Bhusal

Paudel

Katuwal

2020

Tech J

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Waste Pozzolanic Material as a Substitute of Geopolymer Mortar

Dhawan

Gupta

Goyal

2022

Proceedings of International Conference on Innovative Technologies for Clean and Sustainable Development (ICITCSD – 2021)

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A practical approach of partial striking technique in high-rise buildings

Sahu,

Shanmugapriya

2023

ECAM

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PurposeThis research proposes a viable method of slab and shore load computation for the partial striking technique utilized in high-rise construction projects to optimize the use of horizontal formwork. The proposed Partial Striking Simplified Method (PSSM) is designed to be utilized by industry practitioners to schedule the construction operations of casting floors in order to control the formwork costs incurred throughout the completion of a project.Design/methodology/approachThe article presents the PSSM for calculating slab and shore loads in multi-story building construction. It introduces the concept of “clearing before striking,” where shore supports are partially removed after a few days of pouring fresh concrete. The PSSM procedure is validated through numerical analysis and compared to other simplified approaches. Additionally, a user-friendly Python program based on the PSSM procedure is developed to explore the capability of the PSSM procedure and is used to study the variations in slab load, shoring level, concrete grade and cycle time.FindingsThe study successfully developed a more efficient and reliable method for estimating the loads on shores and slabs using partial striking techniques for multi-story building construction. Compared to other simplified approaches, the PSSM procedure is simpler and more precise, as demonstrated through numerical analysis. The mean of shore and slab load ratios are 1.08 and 1.07, respectively, which seems to have a slight standard deviation of 0.29 and 0.21 with 3D numerical analysis. The Python program developed for load estimation is effective in exploring the capability of the proposed PSSM procedure. The Python program's ability to identify the floor under maximum load and determine the specific construction stage provides valuable insights for multi-story construction, enabling informed decision-making and optimization of construction methods.Practical implicationsHigh-rise construction in Indian cities is booming, though this trend is not shared by all the country's major metropolitan areas. The growing construction sector in urban cities demands rapid construction for efficient utilization of formwork to control the construction costs of project. The proposed procedure is the best option to optimize the formwork construction cost, construction cycle time, the suitable formwork system with optimum cost, concrete grade for the adopted level of shoring in partaking and many more.Originality/valueThe proposed PSSM reduces the calculation complexity of the existing simplified method. This is done by considering the identical slab stiffness and identical shore layout for uniform load distribution throughout the structure. This procedure utilizes a two-step load distribution calculation for clearing phase. Initially, the 66% prop load of highest floor level is distributed uniformly over the lower interconnected slabs. In the second step, the total prop load is removed equally from all slabs below it. This makes the load distribution user-friendly for the industry expert.

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Plain And Reinforced Concrete Arches

Cited by 3 publications

References 0 publications

Investigation of Confinement Effects for Determining Moment Curvature and Interaction Diagram of Reinforced Concrete Column

Investigation of Confinement Effects for Determining Moment Curvature and Interaction Diagram of Reinforced Concrete Column

Waste Pozzolanic Material as a Substitute of Geopolymer Mortar

A practical approach of partial striking technique in high-rise buildings

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