Dynamic loading on a prefabricated modular unit of a building during road transportation

Godbole, Siddhesh; Lam, Nelson; Mafas, Mohamed; Fernando, Saman; Gad, Emad; Hashemi, Javad

doi:10.1016/j.jobe.2018.03.017

Cited by 41 publications

(25 citation statements)

References 14 publications

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“…However, several barriers affecting the development of prefabricated buildings are often mentioned, including a higher total cost [9], impaired aesthetics [10], additional risks [11], a lack of professional expertise [12], and the absence of management experience [13]. Nevertheless, prefabricated buildings are still favored by the government of China due to their many advantages, including their faster construction speed [14], less required on-site labor [15], higher construction quality [16], sustainable development [17], and superior occupational health and safety [18]. With the development of prefabricated buildings, some new issues are beginning to emerge and become increasingly prominent, especially the design changes of prefabricated buildings.…”

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confidence: 99%

Research on the Barrier Analysis and Strength Measurement of a Prefabricated Building Design

Yuan

Wang

et al. 2020

Sustainability

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As a sustainable and cleaner type of facility, prefabricated buildings face more design barriers than traditional non-prefabricated buildings. Identifying and managing these barriers is key to improving the success rate of prefabricated building design. However, direct studies on these design barriers are extremely rare. The present study solved this problem by combining multiple methods, including grounded theory (GT), structured self-intersection matrix (SSIM), analytic network process (ANP), and the linear weighted sum method (LWSM). GT was adopted to identify the barriers to prefabricated building design and then SSIM was used to analyze the interactions among them. The eight design barriers were finally identified and classified into three clusters: technical barriers, economic barriers, and management barriers. A further analysis found that there is dependence and feedback among these clusters. The technical barrier cluster and management barrier cluster experience self-feedback. A network model based on ANP was next established to calculate the weights of the barrier elements and then this model was combined with LWSM to evaluate the overall design barrier strength of a project case. The results showed that architectural individualization has the greatest impact on prefabricated building design, followed by the collaborative issues among multiple units and professional designer issues. The overall design barrier strength of the project case was larger. Therefore, the first suggestion provided to the facility management sector is to establish a library for standard house types to achieve architectural design through multihouse combinations.Sustainability 2020, 12, 2994 2 of 16 construction [7], and off-site construction [8]. Whether emergency-driven or market-driven, prefabricated buildings are becoming increasingly popular. However, several barriers affecting the development of prefabricated buildings are often mentioned, including a higher total cost [9], impaired aesthetics [10], additional risks [11], a lack of professional expertise [12], and the absence of management experience [13]. Nevertheless, prefabricated buildings are still favored by the government of China due to their many advantages, including their faster construction speed [14], less required on-site labor [15], higher construction quality [16], sustainable development [17], and superior occupational health and safety [18]. With the development of prefabricated buildings, some new issues are beginning to emerge and become increasingly prominent, especially the design changes of prefabricated buildings. Bogenstatter noted that the design stage determines up to 80% of operational costs, as well as the environment impacts [19,20]. Hence, design changes can waste a great deal of time and money and even affect the quality of buildings. Overcoming this issue remains a troubling prospect for industry insiders and researchers.Design changes are common not just for ordinary buildings but also for prefabricated buildings. However, the design of a p...

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confidence: 99%

Research on the Barrier Analysis and Strength Measurement of a Prefabricated Building Design

Yuan

Wang

et al. 2020

Sustainability

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“…The direct coupling method is to directly establish the contact model and analyze the coupled element with displacement and temperature freedom. The temperature field and stress field can be obtained simultaneously [11]. The sequential coupling method divides thermal analysis and structural stress analysis into two steps.…”

Section: Thermal Stress Coupling Methods Of Brake Discmentioning

confidence: 99%

Active Tilt Control of Brake Disc Bolt Load for Heavy Semitrailer

2019

IJOMAM

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In order to explore the active roll control of brake disc bolt load of heavy semi-trailer, the finite element simulation model of brake disc is constructed by using thermal coupling simulation algorithm, vehicle friction braking principle and heat transfer principle, and the temperature field and thermal stress bolt load of brake disc are analyzed. The results show that when analyzing the internal temperature of the brake disc, the heat transfers from the disc to the inner side, the temperature of the disc first rises and then decreases, and the internal temperature keeps rising. When analyzing the finite element model of the brake disc, it is found that during the braking process, the tensile stress and equivalent stress on the upper side of the bolt hole in the tooth of the brake disc are the largest parts, which are most vulnerable to damage. Therefore, through the research on active roll control of brake disc bolt load of heavy semi-trailer, the finite element simulation model is validated to meet the expectations. Although there are some shortcomings in the research process, it still provides some new ideas for the improvement of brake disc of heavy semi-trailer.

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“…In this case, the single-hub H-S D-P network can no longer satisfy the demand, and should be replaced with a multi-hub network. (2) 1.000000 X (5,9) 0.7000000 P (3) 1.000000 X (6,9) 2.230000 P (8) 1.000000 Y (2,4) 0.7090000 P (9) 1.000000 Y (2,5) 0.7120000 X (1,9) 2.000000 Y (3,3…”

Section: Empirical Analysis On the Model Of Traditional Freight Statimentioning

confidence: 99%

“…Then, the following results were obtained through calculation (as shown in Table 9). (2) 1.000000 P (3) 1.000000 P (8) 1.000000 P (9) 1.000000 X (1,9) 2.101500 X (2,8) 2.221000 X (3,3) 1.513500 X(4,2)…”

Section: Empirical Analysis On the Model Of Shared Freight Station Dementioning

confidence: 99%

“…1.706000 X (5,2) 0.099 X (5,9) 0.8850000 X (6,9) 2.569000 Y (2,4) 0.6100000 Y (2,5) 1.195000 Y(8,1) 1.530000 Y (8,2) 0.6910000 Y (3,3) 1.513500 Y (9,2) 0.9385000 Y (9,5) 0.1339000 Y (9,6) 4.483100 Total cost RMB 156.35 million yuan Therefore, alternative freight stations 2, 3, 8 and 9 were selected for transport services.…”

Section: Empirical Analysis On the Model Of Shared Freight Station Dementioning

confidence: 99%

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Optimization of Drop-and-Pull Transport Network Based on Shared Freight Station and Hub-and-Spoke Network

Feng¹,

Cheng²

2019

JESA

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The current drop-and-pull (D-P) transport process has many defects, including but not limited to the insufficient information sharing, the private ownership of vehicles and infrastructure, and the mismatch between vehicles and goods. Moreover, the hardware and software of existing freight stations fall short of the demand for D-P transport. To solve these problems, this paper optimizes the design of the D-P transport network based on shared freight station and the hub-and-spoke (H-S) network. The freight stations were taken as the hubs, and the routes between supply/demand point and freight station are treated as spokes. On this basis, an optimization model was established to minimize the total cost of freight stations and maximize the force from freight stations on supply/demand points in the H-S D-P network. In addition, all the supply/demand points in the region are covered by the selected freight stations. The LINGO software was introduced to solve the established model. Taking a region in southern China for example, the proposed shared freight station design was compared with the traditional freight station design. The results show that the single-hub H-S D-P network obtained by the traditional design could meet the demand when the D-P demand was relatively small; however, only the multi-hub H-S D-P network obtained by the shared freight station design could fulfil a large D-P demand in an efficient manner. The research findings show that the shared freight station is the future of D-P transport.

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Dynamic loading on a prefabricated modular unit of a building during road transportation

Cited by 41 publications

References 14 publications

Research on the Barrier Analysis and Strength Measurement of a Prefabricated Building Design

Research on the Barrier Analysis and Strength Measurement of a Prefabricated Building Design

Active Tilt Control of Brake Disc Bolt Load for Heavy Semitrailer

Optimization of Drop-and-Pull Transport Network Based on Shared Freight Station and Hub-and-Spoke Network

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