Development of formwork automation design software for improving construction productivity

Lee, Bokyeong; Choi, Hyeonggil; Min, Byongwang; Ryu, Jung-Rim; Lee, Dong‐Eun

doi:10.1016/j.autcon.2021.103680

Cited by 20 publications

(7 citation statements)

References 18 publications

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“…The traditional cast-in-place construction has become an unfavorable approach in practice due to the harm to the built environment and high resource consumption (Abbasnejad et al, 2020;Jiang, 2021;Lee, 2021). To achieve a higher building efficiency and a lower carbon emission footage, the need for novel construction approaches using modular and prefabrication has been highly demanded (Gharbia, et al, 2020;Pan & Pan, 2020;Pradhananga et al, 2021;Zhou et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Parametric design and modular construction of a large additive-manufactured hypar shell structure

Su,

Yuan,

Fan

et al. 2023

ARIN

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Despite recent advances in additive manufacturing technologies, challenges remain to build 3D-printed structures at the architectural scale due to the high cost of large printing equipment. To address this challenge, modular construction has demonstrated its merit by making smaller prefabricated components and using on-site assembly. This paper presents a case study of a 3D-printed hypar shell structural art using modular construction. Guided by parametric design and structural analysis, we optimized the hypar shell to form a butterfly-like shape with a hollow-out pattern. The prefabrication of modular units was completed using commercial 3D printers to catch a limited production time. The prefabricated modular unit of the hypar shell was assembled on site for the Guangzhou International Light Festival, in which the lighting effect was added through the adjustable transparency of hollow spaces within the sandwiched panels. The 3D-printed hypar shell was also disassembled and rebuilt in the UK, showcasing the adaptability and flexibility of the modular design. The resulting 3D-printed structural art not only provides unique aesthetics for the built environment but also demonstrates the possibility of building large shell structures with a low budget by reducing complex falsework.

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Section: Introductionmentioning

confidence: 99%

Parametric design and modular construction of a large additive-manufactured hypar shell structure

Su,

Yuan,

Fan

et al. 2023

ARIN

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“…The FWS provides the geometry and strength that concrete demands to obtain the shape and the structural design properties of the cured concrete [5]. In addition, FWSs have a significant impact on the time and cost performance of RC structures since formwork activities are performed continuously throughout the construction process [6]. Indeed, the FWS can account for up to two-thirds of the total cost of the RC structural frame [7] and it can have a major impact on the total duration of the project as the FWS affects the floor cycle time of building construction projects [8].…”

Section: Introductionmentioning

confidence: 99%

Formwork System Selection Criteria for Building Construction Projects: A Structural Equation Modelling Approach

2022

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Selecting the appropriate formwork system (FWS) is a critical aspect in the successful completion of reinforced concrete (RC) building construction projects. The selected FWS has a significant impact on the cost, time, and quality performances of the project. As there are many FWSs and formwork fabricators (FWFs) available, the selection of the FWS depends on several compromising and conflicting criteria. This study aims to identify the FWS selection criteria groupings (e.g., latent factors) and investigate the quantitative interrelationships among them. For this purpose, 35 FWS selection criteria were identified through literature review, and a questionnaire was developed. The data from the questionnaire were statistically analyzed, and five latent factors were identified: FWS-FWF characteristics, structural design, local conditions, cost, and performance indicators. A conceptual framework was developed based on the latent factors, and a structural equation modelling (SEM) approach was utilized to identify the effects among the latent factors. The results of the SEM approach confirmed that FWS-FWF characteristics are affected by the structural design and local conditions and FWS-FWF characteristics have a substantial effect on cost and the performance indicators of the project. The findings of this study may assist construction professionals in selecting the FWS in building construction projects.

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“…Compared to permanent structures, temporary formwork systems are more fragile and require sufficient strength, stiffness, and stability [3]. The quality inspection of formwork systems is an essential construction management procedure that examines, measures, and gauges whether the characteristics (e.g., number, size, and spacing) of installed formwork systems properly meet specific design requirements.…”

Section: Introductionmentioning

confidence: 99%

Measuring The Spacing of Formwork System Members Using 3D Point Clouds

Wu¹,

Prieto²,

Soto³

2022

Proceedings of the Creative Construction E-Conference 2022

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Formwork systems significantly impact the safety risk, construction productivity, and capital investment of infrastructure projects. Ensuring that formwork systems are properly installed is fundamental to avoid those adverse impacts. To do that, quality inspection during installation is important. The traditional spacing inspection process of different members of the formwork system is time-consuming and labordemanding, and it is easily affected by the inspector's knowledge and skills. This study proposes a methodology for the spacing measurement of formwork system members using 3D point clouds to overcome these shortcomings. The feasibility and effectiveness of the proposed methodology were tested on a formwork system mockup. The mean absolute percentage error (MAPE) of the eight spacing measurements compared to those using a measuring tape was 1.05%. The experimental test demonstrates that the 3D point cloud approach is promising, and it has the potential to be an alternative solution to measure the spacing of formwork system members.

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Development of formwork automation design software for improving construction productivity

Cited by 20 publications

References 18 publications

Parametric design and modular construction of a large additive-manufactured hypar shell structure

Parametric design and modular construction of a large additive-manufactured hypar shell structure

Formwork System Selection Criteria for Building Construction Projects: A Structural Equation Modelling Approach

Measuring The Spacing of Formwork System Members Using 3D Point Clouds

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