Research on Structural Design Technology for Prefabricated Steel-Structure Public Buildings
装配式钢结构公共建筑结构设计技术研究

摘要

针对装配式钢结构在公共建筑应用中存在的结构体系适配性不足、节点可靠性管控难度大、全专业设计协同性弱等核心问题，为提升结构设计的科学性与工程落地性，结合大型公共建筑大跨度、功能多元、荷载工况复杂的核心特征，从结构体系适配、关键构造优化、性能保障体系构建、数字化协同设计四个维度展开系统性分析，结合工程案例完成设计方法的可行性验证。提出适配公共建筑场景的模块化复合结构设计体系，形成标准化与定制化协同的设计方法，可有效降低结构用钢量、缩短施工周期，同步提升结构抗震性能与长期耐久性，为同类工程设计提供理论支撑与实践参考。

Abstract

In view of the core problems in the application of prefabricated steel structures in public buildings, such as insufficient adaptability of structural systems, difficulties in controlling joint reliability, and weak interdisciplinary design coordination, this paper aims to improve the scientific basis and engineering applicability of structural design. Based on the key characteristics of large public buildings, including large spans, diverse functions, and complex load conditions, a systematic analysis is conducted from four dimensions: structural system adaptability, optimization of key structural details, construction of a performance assurance system, and digital collaborative design. The feasibility of the proposed design method is verified through an engineering case. The paper proposes a modular composite structural design system suitable for public building scenarios and forms a design method that integrates standardization with customization. This method can effectively reduce steel consumption, shorten the construction period, and simultaneously improve seismic performance and long-term durability, thereby providing theoretical support and practical reference for the design of similar projects.