摘要
不同张力构件的热膨胀性能存在明显区别。为了研究张力构件热膨胀性能对张力穹顶温度响应,以肋环型张力穹顶为例,分别开展不同特性张力构件布置方式对索穹顶温度响应影响规律研究。结果表明:在正常设计范围内,改变预应力水平,仅能改变张力穹顶中极限温度作用,不能改变各张力构件内力对温度敏感性;在升温过程中下部张力杆件的热膨胀性能对各张力构件温度敏感性影响较大;在一致温度场中,张力穹顶最外圈的脊部张力构件是温度敏感性最高的构件。
The thermal expansion properties of tension components are distinctly different. The temperature response of tension dome was analyzed based on variable layout and thermal expansion properties of tension components using Geiger type tension dome. It was shown that the ultimate temperature action of tension dome is changed with a change of prestress level but the temperature-sensibility of the tension components was almost invariant. In temperature-rise process,the thermal expansion properties of bottom tension components had great effect on temperature-sensibility of tension dome. The rigid tension components on outer ring had maximum temperature-sensibility in constant temperature field.
出处
《工业建筑》
CSCD
北大核心
2015年第8期10-13,42,共5页
Industrial Construction
基金
国家自然科学基金项目(51378031)
国家自然科学青年基金项目(51408016)
北京工业大学基础研究基金项目(14312009)
关键词
张力构件
柔性索
高强钢拉杆
张力穹顶
温度响应
tension components
flexible cable
high strength steel tie rod
tension dome
temperature response
