Failure mechanisms of hexagonal-shaped intra-module connections in modular steel building

Yazmin Sahol Hamid , Hazrina Mansor , Mohamad Zarif Mirza Alias , Nurul Hidayah Saberi , Norazlinda Elisa Alias
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Abstract

Modular construction has gained popularity for its cost-effectiveness, time savings, and environmental benefits. This research delves into innovating modular buildings to enhance their aesthetic value in contemporary architectural designs. Traditional rectangular modules have lost architectural significance in the modern era. The study focuses on the failure mechanisms of hexagonal intra-module connections under nonlinear static analysis, aiming for advanced structural design and performance in modular construction. The study tested a control model, a Welded Flange Bolted Web (WFBW) connection, and three variations with different parameters: boundary condition, bolt arrangement, and steel grade. For the boundary condition, the tie constraint between the beam's flanges and the diaphragm was removed. Bolt arrangement was assessed with staggered and non-staggered bolts. Steel grade variations included S275 and S355. Results showed that the WFBW connection outperformed the Bolted Web (BW) connection in load resistance. The most damaged component was the beam, with bearing failure at the upper bolt hole. Non-staggered bolts exhibited larger displacements than staggered bolts. The study emphasized the significance of steel material strength in terms of stress and strain on bolt capacity. It highlights the importance of intra-module connections in modular steel structures and the need to consider design parameters carefully. The findings offer insights into improving modular connections' performance and failure mechanisms, facilitating the creation of aesthetically pleasing and structurally sound modular structures. This nonlinear static analysis aids in developing advanced modular construction designs, enhancing architectural significance in the modern era. By merging structural performance and aesthetics, the study promotes innovative modular construction to meet contemporary architectural demands.

模块化钢结构建筑中六角形模块内连接的失效机理
模块化建筑因其成本效益高、节省时间和环保优势而广受欢迎。本研究将深入探讨如何创新模块化建筑,以提高其在现代建筑设计中的美学价值。传统的矩形模块已经失去了现代建筑的意义。本研究侧重于非线性静态分析下六边形模块内连接的失效机理,旨在提高模块化建筑的结构设计和性能。研究测试了一个控制模型,即焊接法兰螺栓腹板(WFBW)连接,以及三种不同参数的变体:边界条件、螺栓布置和钢材等级。对于边界条件,梁的翼缘和横隔膜之间的连接约束被移除。螺栓布置采用交错和非交错螺栓进行评估。钢材等级包括 S275 和 S355。结果表明,WFBW 连接的抗荷载性能优于螺栓腹板(BW)连接。受损最严重的部件是横梁,上部螺栓孔处的支承失效。非交错螺栓的位移大于交错螺栓。研究强调了钢材料强度在应力和应变方面对螺栓承载能力的重要性。研究强调了模块化钢结构中模块内连接的重要性,以及仔细考虑设计参数的必要性。研究结果为改善模块连接性能和失效机制提供了启示,有助于创建美观且结构合理的模块结构。这种非线性静态分析有助于开发先进的模块化建筑设计,增强现代建筑的意义。通过融合结构性能和美学,该研究促进了创新模块化建筑的发展,以满足当代建筑的需求。
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