人致荷载下深圳市综合交通枢纽大跨度楼盖动力特性及舒适度分析

刘文锐; 张安玲; 高修建; 井司南; 陈志华

doi:10.13206/j.gjgS24120301

人致荷载下深圳市综合交通枢纽大跨度楼盖动力特性及舒适度分析

doi: 10.13206/j.gjgS24120301

1. 中国铁路设计集团有限公司, 天津 300308;
2. 天津大学建筑工程学院, 天津 300072;
3. 滨海土木工程结构与安全教育部重点实验室, 天津 300072

基金项目:

国家重点研发计划（SQ2019YFD110080）。

详细信息

作者简介:
刘文锐，硕士研究生，工程师，主要从事钢结构设计工作。

通讯作者:
张安玲，博士研究生，主要从事结构分析及计算工作，an_ling1997@tju.edu.cn。

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出版历程
- 收稿日期: 2024-12-03

Dynamic Characteristics and Comfort Analysis of the Long-Span Floors in Shenzhen Comprehensive Transportation Hub Under Human-Induced Loads

1. China Railway Design Corporation, Tianjin 300308, China;
2. School of Civil Engineering, Tianjin University, Tianjin 300072, China;
3. Key Laboratory of Coast Civil Structure Safety of Ministry of Education, Tianjin 300072, China

摘要

摘要: 随着生活水平的不断提高，越来越多的人重视居住环境的舒适度。而影响舒适度的重要因素之一就是建筑楼盖的振动，当人类活动的某一频率与建筑楼盖的自振频率重合或接近时楼盖振幅达到最大，进而从生理上引起人们的不适感。2020年1月1日起，我国正式实施了JGJ/T 441—2019《建筑楼盖结构振动舒适度技术标准》，这是我国第一部系统总结建筑楼盖舒适度要求的规范。为此，参考JGJ/T 441—2019中楼盖舒适度评估标准，利用MIDAS/Gen软件对深圳市综合交通枢纽工程中较为不利的东景观平台、东站台和西站台进行模态分析，对单人及多人的连续行走、连续跑动及连续跳跃等工况进行模态分析和人动力响应分析。结果表明：将楼盖视为以行走激励为主的楼盖结构时，东景观平台、东站台和西站台的一阶竖向自振频率均大于3 Hz，竖向峰值加速度均不大于0.15 m/s²，频率和加速度双重指标满足我国JGJ/T 441—2019的要求，楼盖满足人们正常使用需求。
- 深圳市综合交通枢纽 /
- 人致荷载 /
- 振动舒适度 /
- 竖向自振频率 /
- 峰值加速度
Abstract: With the continuous improvement of quality of life， growing attention has been paid to the comfort of living environments. One of the critical factors affecting comfort is floor vibration. When the frequency of a human activity coincides with or approaches the natural frequency of a building floor， resonance occurs， causing the floor’s vibration amplitude to reach its maximum， which can lead to physiological discomfort. Since January 1， 2020， China has officially implemented the Technical Standards for Structural Vibration Comfort of Building Floors （JGJ/T 441-2019）， which is the first specification to systematically summarize the comfort requirements for building floors. This study reviewed existing Chinese and international codes on vibration comfort evaluation. Based on the intended functions of the long-span floors of the Shenzhen Comprehensive Transportation Hub， the MIDAS/Gen software was used to conduct a modal analysis of the more critical areas： the east landscape platform， the east platform， and the west platform. Modal and dynamic response analyses were subsequently performed under single-person and multi-person continuous walking， running， and jumping scenarios. The results showed that when the long-span floors were treated as structures primarily subjected to walking excitation， the first-order vertical natural frequencies of the east landscape platform， east platform， and west platform were all greater than 3 Hz， and their vertical peak accelerations did not exceed 0.15 m/s². Both the frequency and acceleration criteria met the requirements of China’s current specification， confirming that the long-span floors satisfied normal serviceability requirements.
- Shenzhen Comprehensive Transportation Hub /
- human-induced load /
- vibration comfort /
- vertical natural frequency /
- peak acceleration

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