Numerical study on the effects of diaphragm stiffness and strength on the seismic response of multi-story modular buildings

Srisangeerthanan, Sriskanthan; Hashemi, Javad; Rajeev, Pathmanathan; Gad, Emad; Fernando, Saman

doi:10.1016/j.engstruct.2018.02.048

Cited by 72 publications

(17 citation statements)

References 16 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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“…It was also observed that the maximum base shear that the structure could resist was higher than that of traditional steel buildings. Srisangeerthanan et al [ 127 ] further investigated the effects of diaphragm discontinuities in MSC by parametric analysis on a 4-story MSC. They found that the stiffness of the diaphragm had a significant influence on the seismic performance of MSC.…”

Section: Global Seismic Response and Design Criteriamentioning

confidence: 99%

Seismic performance of mid-to-high rise modular steel construction - A critical review

Deng

Zong

Ding

et al. 2020

Thin-Walled Structures

105

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“…In Table 3, the modal participating mass ratios are given for the first three vibration modes. If the condition given by Equation (42) is obeyed, it means that it is a rigid diaphragm (Figure 4) [14]. Rigid diaphragm distributes the horizontal forces to the lateral resisting elements, in direct proportion to their relative stiffness.…”

Section: Case Studymentioning

confidence: 99%

“…Several cases are analysed by taking into account the following hypotheses: (i) The principle of the rigid diaphragm, which is described in [14], can be implemented by structural conformation. These structural elements must have an elastic behaviour according to [2], and ensure spatial connection between the structural elements.…”

Section: Introductionmentioning

confidence: 99%

A Method for Reducing of the Overall Torsion for Reinforced Concrete Multi-Storey Irregular Structures

Botiș

Cerbu

2020

Applied Sciences

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The uneven distributions of mass and stiffness in the case of multi-storey concrete buildings lead to a torsion sensitivity of those civil structures under dynamical loadings like earthquakes or wind and gusts. In order to minimize the overall torsion, it is imperatively necessary to reduce the distance between the centre of mass (CM) and centre of stiffness (CS) in the design stage. In this context, the main purpose of this paper is to present a theoretical method of reducing torsion by minimizing the distance between CM and CS at the level of each floor of the structure. Principal stiffness axes are also changed in convenient directions so that the movement of the structure leads to a favourable plastic mechanism in the fundamental mode of vibration. To achieve the goal, the main objective is to change the dimensions and orientations of the pillars located on the perimeter of the structures. The described method was used to study: irregular shaped structures in plan; structures with stairs or with central concrete core; structures with elevation retractions. The overall torsion reducing was achieved with Matlab programs, and the verification of the results was carried out by using the software ETABS 2016.

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Numerical study on the effects of diaphragm stiffness and strength on the seismic response of multi-story modular buildings

Cited by 72 publications

References 16 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

Seismic performance of mid-to-high rise modular steel construction - A critical review

A Method for Reducing of the Overall Torsion for Reinforced Concrete Multi-Storey Irregular Structures

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