Progressive collapse analysis of corner-supported composite modular buildings

Peng, Jiahao; Hou, Chunfeng; Shen, Luming

doi:10.1016/j.jobe.2021.103977

Cited by 19 publications

(8 citation statements)

References 44 publications

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“…The main reason for this is that no standard design approach exists, and no industry-accepted connections and design guideline this relatively new construction technique exist [11,13]. Several recent studies have attempted to better understand the overall structura haviour and robustness of corner-supported MSBs [14][15][16][17][18][19][20][21]. Alembagheri et al [15] in tigated the role of inter-module connections (i.e., connections between modules) in Several recent studies have attempted to better understand the overall structural behaviour and robustness of corner-supported MSBs [14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

“…Several recent studies have attempted to better understand the overall structura haviour and robustness of corner-supported MSBs [14][15][16][17][18][19][20][21]. Alembagheri et al [15] in tigated the role of inter-module connections (i.e., connections between modules) in Several recent studies have attempted to better understand the overall structural behaviour and robustness of corner-supported MSBs [14][15][16][17][18][19][20][21]. Alembagheri et al [15] investigated the role of inter-module connections (i.e., connections between modules) in the robustness of corner-supported MSBs by notionally removing a complete modular unit to simulate the loss of supports.…”

Section: Introductionmentioning

confidence: 99%

“…In the analysis [19], only the semi-rigidity of inter-module connections has been considered; however, the intramodule connections were assumed to be fully rigid. The role of intra-module connections was highlighted by Peng et al [21] in a progressive collapse analysis of a multi-storey corner-supported MSB modelled using a combination of finite shell and solid elements. The fracture of the intra-module connections was identified as one of the governing failure mechanisms causing collapse.…”

Section: Introductionmentioning

confidence: 99%

“…Most of the studies to date investigating the structural robustness of corner-supported MSBs have focused on the effect of inter-module connections (i.e., connections between the modules) while assuming that the intra-module connections were fully rigid. However, in corner-supported MSBs where hollow section columns are often used [6,[16][17][18][19][20][21]25,26], the welded connections between the beams and columns may not be fully rigid despite the connections being welded. The reason for this is that the face of the hollow section columns where the beam is connected may deform locally when subjected to an end moment from the beams under floor loadings [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

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Computational Modelling of Intra-Module Connections and Their Influence on the Robustness of a Steel Corner-Supported Volumetric Module

Heng,

Hyland,

Hough

et al. 2024

Modelling

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This paper investigates the robustness of a single 3D volumetric corner-supported module made of square hollow-section (SHS) columns. Typically, the moment–rotation (M-θ) behaviour of connections within the module (intra-module) is assumed to be fully rigid rather than semi-rigid, resulting in inaccurate assessment (i.e., overestimated vertical stiffness) during extreme loading events, such as progressive collapse. The intra-module connections are not capable of rigidly transferring the moment from the beams to the SHS columns. In this paper, a computationally intensive shell element model (SEM) of the module frame is created. The M-θ relationship of the intra-module connections in the SEM is firstly validated against test results by others and then replicated in a new simplified phenomenological beam element model (BEM), using nonlinear spring elements to capture the M-θ relationship. Comparing the structural behaviour of the SEM and BEM, under notional support removal, shows that the proposed BEM with semi-rigid connections (SR-BEM) agrees well with the validated SEM and requires substantially lower modelling time (98.7% lower) and computational effort (97.4% less RAM). When compared to a BEM with the typically modelled fully rigid intra-module connections (FR-BEM), the vertical displacement in the SR-BEM is at least 16% higher. The results demonstrate the importance of an accurate assessment of framing rotational stiffness and the benefits of a computationally efficient model.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Computational Modelling of Intra-Module Connections and Their Influence on the Robustness of a Steel Corner-Supported Volumetric Module

Heng,

Hyland,

Hough

et al. 2024

Modelling

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“…Selected geometric and physical parameters are also investigated. Peng et al [33] evaluated newly designed composite modular buildings against column loss. The results indicated that the dynamic amplification factor was influenced by building height.…”

Section: Introductionmentioning

confidence: 99%

Variable Factors Affecting Progressive Destruction of Composite Steel Tall Building

Lotfy¹,

Mortagi

Madawy

2022

Buildings

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In recent years, the presence of progressive collapse in tall buildings induced a catastrophic event which attracted the majority of the community’s attention. The purpose of this paper is to develop a 3D numerical analysis of tall building under column loss. A composite steel frame building with 25 stories with five spans in both directions is proposed. The building has 3m story height and 8m span in both directions. The building is designed through the commercial software SAP2000 software against wind loads based on Eurocode 1-2005. The focus here is to investigate various parametric studies under abrupt column loss of multi-story composite building. The effect of composite slab is considered with full composite action between beam and slab. The findings of a parametric formulation incorporating important parameters for the progressive collapse design technique are given and confirmed using nonlinear dynamic time history analyses. The assessment of results has been introduced based on deformation, axial force in columns, equivalent plastic strain, major moment and axial force in the considered beams above the column loss. Next, a probabilistic analysis has been performed to assess the behavior of composite steel buildings against column loss. The study investigates the critical column loss and pinpoints the location of the next critical column. The results show that the concrete grade, position of the removed column, beams cross-section, and place of bracings have a significant effect in the response of the building rather than the steel grade and bottom reinforcement density. The removal of exterior column has the significant increase of the axial force percentage by 111.4% for the corner column. The corner column removal gives the maximum equivalent plastic strain with a value of 0.00449. Furthermore, the results reveal the potential impact of uncertainty on the structural elements of the considered buildings through the progressive collapse analysis. The vertical displacement above the column is fitted with mean value of 0.0251387 m and with a coefficient of variation 0.01664.

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Numerical Study on the Seismic Performance of CFST Modular Frame with Stainless Steel Connections

Liang,

Hou

2024

Lecture Notes in Civil Engineering

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Progressive collapse analysis of corner-supported composite modular buildings

Cited by 19 publications

References 44 publications

Computational Modelling of Intra-Module Connections and Their Influence on the Robustness of a Steel Corner-Supported Volumetric Module

Computational Modelling of Intra-Module Connections and Their Influence on the Robustness of a Steel Corner-Supported Volumetric Module

Variable Factors Affecting Progressive Destruction of Composite Steel Tall Building

Numerical Study on the Seismic Performance of CFST Modular Frame with Stainless Steel Connections

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