A Novel Structural Design Method for Modular Buildings Based on Element Stiffness Contribution

ZHONG Xu; CHEN Hao; WANG Xiaoxiang; SHI Tuo; HUANG Wei; PAN Yanran

doi:10.3724/j.gyjzG25030302

Volume 56 Issue 7

Jul. 2026

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2026 > 56(7): 101-111

ZHONG Xu, CHEN Hao, WANG Xiaoxiang, SHI Tuo, HUANG Wei, PAN Yanran. A Novel Structural Design Method for Modular Buildings Based on Element Stiffness Contribution[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(7): 101-111. doi: 10.3724/j.gyjzG25030302

Citation:

ZHONG Xu, CHEN Hao, WANG Xiaoxiang, SHI Tuo, HUANG Wei, PAN Yanran. A Novel Structural Design Method for Modular Buildings Based on Element Stiffness Contribution[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(7): 101-111. doi: 10.3724/j.gyjzG25030302

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A Novel Structural Design Method for Modular Buildings Based on Element Stiffness Contribution

doi: 10.3724/j.gyjzG25030302

1. Hunan Construction Investment Group Co., Ltd., Changsha 410004, China;
2. Hunan Construction Engineering Group Co., Ltd., Changsha 410016, China;
3. Zhongxiang Intelligent Construction Co., Ltd., Changsha 410015, China;
4. School of Civil Engineering, Central South University, Changsha 410075, China

Received Date: 2025-03-03
Available Online: 2026-08-31
Publish Date: 2026-07-20

Abstract

Abstract

Modular construction is a novel building form in which factory-integrated three-dimensional modules are connected into an integrated whole on-site. At the current stage， the structural forms adopted in modular construction， such as stacked box structures and embedded modular structures， have certain limitations in practical application. Therefore， an innovative modular construction system based on a sparse steel frame is proposed. However， the structural frame of this innovative modular construction features large slenderness ratios of columns and long spans of beams， which may impact its economic efficiency and practical applicability for high-rise building applications. Aiming at the above-mentioned problems of the innovative modular construction， this paper proposed an equivalent modeling method that can reflect the stiffness contribution of individual modules. Parametric analysis was carried out to investigate the influence of modular stiffness contribution on the overall structural responses. Subsequently， structural optimization design based on modular stiffness contribution was conducted， and the effectiveness of the optimization was evaluated. The results showed that the inter-storey lateral stiffness of the overall structure could be improved and the reserve bearing capacity of components in the sparse steel frame could be enhanced when the modular stiffness contribution was considered in structural analysis. On the premise of ensuring the overall structural performance， the steel consumption per unit area of the sparse steel frame was effectively reduced compared with the unoptimized reference models when the modular stiffness contribution was taken into account.
- modular construction,
- sparse frame,
- equivalent bracing model,
- parametric analysis,
- structural optimization design

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References(24)

References

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