Contrary to conventional buildings, the structural robustness of modular high-rise buildings has not been studied due to the lack of the numerical and experimental studies and design guides. To gain a better understanding of their structural robustness against progressive collapse, this paper investigates the robustness of modular high-rise buildings using the alternative load path method with nonlinear time-history analysis. A numerical model of a typical modular tall building subjected to a corner module removal scenario was developed to explore its typical response, resistance mechanism and progressive collapse. A comprehensive parametric study was then performed to examine the effects of a wide range of parameters (e.g. column cross-section, inter-module connection and bracing system) and configurations on the progressive collapse and structural robustness of modular buildings. The result showed that bracing systems can enhance the structural robustness effectively by sharing redistributed loads and restraining structural members. The removal of corner members is more critical because there are limited adjacent members for sharing the redistributed loads. Inter-module connections should provide adequate strength to develop more alternative load paths when extreme events occur. Finally, design recommendations for improving the robustness of modular buildings were also proposed based on the findings from the parametric study.

Huu-Tai Thai

Quang Vu Ho

Wenqian Li

Tuan Ngo

Structure and Infrastructure Engineering

STRUCTURE AND INFRASTRUCTURE ENGINEERING - MAINTENANCE, MANAGEMENT, LIFE-CYCLE DESIGN AND PERFORMANCE 是一本国际期刊，专门介绍各种基础设施的维护、管理和生命周期性能方面的最新进展，例如：建筑物、桥梁、水坝、铁路、地下建筑、海上平台、管道、海军舰艇、海洋结构、核电站、飞机和其他类型的结构，包括航空航天和汽车结构。该杂志介绍了用于分析、预测和优化基础设施性能的最先进技术的研究和发展。需要填补的主要空白是基础设施系统维护、管理和生命周期性能方面的研究人员和从业人员之间的空白，以及从事不同类型基础设施工作的专业人员之间的空白。为此，该期刊将提供一个广泛融合科学、技术和实用论文的论坛。该期刊得到国际生命周期土木工程协会 (IALCCE) 和国际桥梁维护与安全协会 (IABMAS) 的认可。

Structure and Infrastructure Engineering is an international journal dedicated to the maintenance, management, life-cycle design, and performance of various infrastructures. The journal covers the latest advancements in areas such as buildings, bridges, dams, railways, underground constructions, offshore platforms, pipelines, naval vessels, marine structures, nuclear power plants, aircraft, and other types of structures, including aerospace and automotive structures. It aims to present cutting-edge research and developments in technologies used for analyzing, predicting, and optimizing infrastructure performance. The journal seeks to bridge the gap between researchers and practitioners in the field of infrastructure system maintenance, management, and life-cycle performance, as well as among professionals working on different types of infrastructure. To this end, it provides a broad forum that integrates scientific, technical, and practical papers, and is recognized by the International Association for Life-Cycle Civil Engineering (IALCCE) and the International Association for Bridge Maintenance and Safety (IABMAS).

《Structure and Infrastructure Engineering》是一本国际期刊，专注于基础设施的维护、管理、生命周期设计和性能。期刊涵盖建筑物、桥梁、水坝、铁路、地下建筑、海上平台、管道、海军舰艇、海洋结构、核电站、飞机及其他类型的结构，包括航空航天和汽车结构等领域的最新研究进展。期刊致力于介绍用于分析、预测和优化基础设施性能的先进技术。期刊旨在填补基础设施系统维护、管理和生命周期性能研究人员与从业人员之间的空白，以及不同类型基础设施专业人员之间的沟通缺口。为此，期刊提供一个融合科学、技术和实用论文的广泛论坛，得到了国际生命周期土木工程协会（IALCCE）和国际桥梁维护与安全协会（IABMAS）的认可。

Progressive collapse and robustness of modular high-rise buildings

The structural robustness of modular high-rise buildings has not been studied due to the lack of the numerical and experimental studies and design guides, but the design guides suggest that this should be changed.

Category	Quartile
工程技术	3
工程技术, 工程土木	3
工程技术, 工程机械	3

Progressive collapse and robustness of modular high-rise buildings

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Category	Quartile
ENGINEERING, MECHANICAL	2