天津体育中心自行车馆服役期结构响应监测及分析  

MONITORING AND ANALYSIS OF STRUCTURAL RESPONSE OF TIANJIN SPORTS CENTER VELODROME IN SERVICE PERIOD

作　　者：马青[1] 陈志华[1,2] 支家强 王小盾[1] 刘红波[1,2] 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]天津大学水利工程仿真与安全国家重点实验室,天津300072 [3]天津市建设工程技术研究所,天津300204

出　　处：《工业建筑》2015年第8期48-52,共5页Industrial Construction

基　　金：国家自然科学基金项目(51208355);天津市建交委科技项目(2013-15;2014-1)

摘　　要：天津体育中心自行车馆为双层弦支穹顶结构。为了保证该屋盖在使用期间的安全,并对结构的受力性能和温度分布进一步研究,对天津体育中心自行车馆屋盖弦支穹顶结构在使用过程中的温度和应力进行监测。采用热电偶法直接测量杆件表面温度,用振弦计测量了结构关键杆件的应变,获得大量有关天津体育中心自行车馆屋盖结构温度及应力分布状态的数据。通过对这些数据分析表明:正常使用中的钢结构尤其是大跨度空间结构的应力变化主要受温度控制;构件温度与环境温度基本一致,最高温度可取为当地日最高气温;结构最低温度,在能够保证供暖的条件下,高于当地平均最低温度,可以根据实际情况取值。Double-layered suspen-dome structure was applied in Tianjin Sports Center Velodrome. Temperature and strain monitoring was carried out to guarantee the safety and to study the mechanical characteristic and temperature distribution of the dome. Temperature of members was measured by thermocouple method and strain of the key members by vibration wire strain sensor. A great number of data of temperature and stress distribution were obtained during monitoring. By analyzing these data,it is shown that strain change under ordinary situation is largely caused by temperature change in steel structure especially long-span space structure. Member temperature is coincides with environment temperature,which means the daily maximum temperature could be taken as the highest temperature of structure and actual temperature in the building could be lowest temperature of structure when heating is guaranteed in winter.

关 键 词：弦支穹顶 监测 服役期 温度作用 

分 类 号：TU317[建筑科学—结构工程]