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| 大跨度摄影棚钢结构简化抗震计算方法研究 |
| Study on simplified seismic calculation method for Long-span photostudio steel structures |
| 投稿时间：2025-08-21 修订日期：2025-09-19 |
| DOI： |
| 中文关键词: 大跨度摄影棚钢结构 简化结构模型 抗震设计 自振周期 地震力 |
| 英文关键词:Long-span photostudio steel structure Simplified structural model Seismic design Natural vibration period Seismic force |
| 基金项目:湖南省自然科学基金（2023JJ31013）；湖南省教育厅科研重点项目（23A0205）。 |
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| 中文摘要: |
| 针对大跨度摄影棚钢结构杆件数量多、计算复杂的问题，基于截面惯性矩等效原理，提出了一种适用于该类结构的简化抗震计算方法。通过合理假定，将原桁架结构体系简化为单层单跨的等效钢框架结构模型，推导了简化结构模型的截面几何参数、刚度矩阵与质量矩阵的计算表达式，提出了结构基本自振周期和地震力的简化计算公式。通过对多个结构模型进行计算，并与有限元分析结果和多国简化公式计算结果进行对比，验证了简化模型和相关公式的计算精度。研究成果可为大跨度摄影棚钢结构的抗震计算提供参考。 |
| 英文摘要: |
| A simplified seismic calculation method for long-span steel photostudio structures is proposed to address the challenges of numerous members and complex computation, based on the principle of equivalent section moment of inertia. Through reasonable assumptions, the truss structure is simplified into a single-layer single-span equivalent steel frame model. Calculation expressions for the section geometric parameters, stiffness matrix, and mass matrix of the simplified model are derived, and simplified formulas for the fundamental natural vibration period and seismic force are established. The accuracy of the simplified model and formulas is verified by analyzing multiple structural models and comparing the results with those from finite element analysis and international simplified formulas. The research findings provide a valuable reference for the seismic design and analysis of long-span steel photostudio structures. |
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