Exploit Social Distancing in Construction Scheduling: Visualize and Optimize Space–Time–Workforce Tradeoff

He, Chuanni; Liu, Min; Zhang, Yuxiang; Wang, Zhigao; Hsiang, Simon M.; Chen, Gongfan; Jiang, Chen

doi:10.1061/(asce)me.1943-5479.0001037

Cited by 9 publications

(3 citation statements)

References 36 publications

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“…In the field of construction engineering, Chen et al redesigned the 16 steps of prefabricated constructed buildings using the Judgment, Processing, and Transfer modules of the Arena, which resulted in an overall savings of 24% in production time and a reduction in space requirements, idle time, and resource conflicts in assembly operations [19]. He et al applied Arena Simulation to 17 activities in a high-rise residential building to simulate 89 workforce and 2 fast-follow-up levels to explore the impact of scenario changes on the project [23]. This research applied Arena Simulation 15.1 to establish the simulation model.…”

Section: Arena Computer Simulationmentioning

confidence: 99%

Duration and Labor Resource Optimization for Construction Projects—A Conditional-Value-at-Risk-Based Analysis

Ding,

Liu,

Hsiang

et al. 2024

Buildings

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The complexity and uncertainty of construction projects contribute to low efficiency in the construction industry. This research applied the Takt-time planning method to optimize the construction working process, and proposed a risk control framework based on Value at Risk (VaR) and Conditional Value at Risk (CVaR) approaches to explore and predict a project schedule and cost performance under different scenarios. This research selected a high-rise residential building project for a case study and collected 1672 productivity data samples. Arena Simulation models were established based on 90 combinations of labor assignments to assess Takt-time planning strategies’ impact on project performance in four scenarios. The VaR and CVaR evaluations at 75% and 90% confidence levels were compared to balance project benefits and risks. Without any overtime or additional workers, this research found a Takt-time planning method that can reduce the project duration by 20.2% and labor costs by 2.1% at the same time, using a labor assignment of 12 bar placers, 12 carpenters, and 5 pipefitters. The findings can assist construction managers to achieve a shorter duration, reduced cost, and safer work environment, which will be very effective and beneficial to improve project overall performance.

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Section: Arena Computer Simulationmentioning

confidence: 99%

Duration and Labor Resource Optimization for Construction Projects—A Conditional-Value-at-Risk-Based Analysis

Ding,

Liu,

Hsiang

et al. 2024

Buildings

Self Cite

View full text Add to dashboard Cite

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“…[8] Then, using ENVI software, ROIs (Region of Interest) for various land use types are established to extract the land use information for the years 2002, 2009, 2015, and 2020 using supervised classification methods. [9] Finally, a comparative analysis is conducted on the results of the supervised classification to obtain the temporal sequence of land use changes in the study area, as shown in Figure 2 and Table 1. and 2020, arable land was the main substrate in the study area, accounting for 72.48%, 64.76%, 57.35%, and 62.31% of the total area, respectively.…”

Section: Climate Characteristicsmentioning

confidence: 99%

Research on the Changes in the Ecological Landscape Pattern and the Benefits Functions of Flood Control in the Dasi River Basin

2023

IJNDES

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Water ecological health and safety assessment is the core of water ecological security research, and it is a powerful tool for discovering and addressing safety hazards in the water environment. Water ecological environment protection is a systemic issue that crosses scales and regions. It not only involves the protection of the water ecosystem itself but also extends to the interaction between the entire urban area and the water environment. Therefore, achieving water ecological health and safety requires not only attention to water quantity and quality related to water resources supply and demand and water pollution caused by urbanization but also the comprehensive consideration of the stability of the ecosystem structure caused by land use activities and its ability to provide the necessary well-being benefits for human production and life stability. This plays a crucial role in maintaining regional water environment and economic and social stability in the long term.

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“…After completing the grouting reinforcement construction of the reservoir curtain according to the above steps, the reliability of the reinforced impermeable wall was analyzed using a finite element model in this study. In the reliability analysis, the weight and density of the reinforced wall were the main factors considered [9]. In order to take into account the time-dependent nature of the impermeable wall, the reliability analysis process was transformed into random variables.…”

Section: Reinforcement Reliability Calculation Modelmentioning

confidence: 99%

Research on Grouting Reinforcement Construction Technology of Reservoirs in Water Conservancy Project Construction

2023

jceup

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In order to improve the service life of reservoirs and reduce the risks associated with their use in water conservancy projects, this study focuses on the curtain grouting reinforcement construction technology applied in the construction of reservoirs in a specific region. The physical and mechanical properties of the geological conditions of the dam foundation site of the reservoir are analyzed, taking into account factors such as construction period, cost, and desired treatment effects. The curtain grouting reinforcement technology is adopted, which involves five steps: drilling, flushing, hydraulic testing, grouting and sealing, and special case handling, to reinforce the leakage of the reservoir. The reliability of the reinforced anti-seepage measures is analyzed using finite element models. The experimental results show that the construction results of each step meet the construction standards. The permeability coefficients at different locations are within the allowable range of 8.9×10-6cm/s, and the results of the specific discharge of the soil layers are smaller than the allowable decrease in specific discharge. The construction effect meets the reinforcement requirements.

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Exploit Social Distancing in Construction Scheduling: Visualize and Optimize Space–Time–Workforce Tradeoff

Cited by 9 publications

References 36 publications

Duration and Labor Resource Optimization for Construction Projects—A Conditional-Value-at-Risk-Based Analysis

Duration and Labor Resource Optimization for Construction Projects—A Conditional-Value-at-Risk-Based Analysis

Research on the Changes in the Ecological Landscape Pattern and the Benefits Functions of Flood Control in the Dasi River Basin

Research on Grouting Reinforcement Construction Technology of Reservoirs in Water Conservancy Project Construction

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