新型大跨度空间结构施工拼装温度方案合理性数值研究

发布时间：2018-04-22 13:34

本文选题：大跨度空间结构 + 温度应力　；参考：《结构工程师》2014年06期

【摘要】：大跨度空间结构往往施工工期较长,这就导致结构施工期间的温度变化幅度较大。一般北方地区年最高气温与最低气温往往相差超过40°C,考虑太阳辐射影响后,结构表面温度更可相差60°C~100°C,加之空间结构本身往往属于高次超静定结构,致使结构建设过程中极易产生较大的施工内力,出现重大安全隐患。有鉴于此,对新型大跨度空间结构的施工拼装过程进行了数值模拟研究,探讨了不同温度模型对结构拼装所产生的影响(温度应力方面),最后给出了较优的施工拼装温度计算模型。
[Abstract]:Long span space structures tend to have a long construction period, which results in a large variation of temperature during construction. In general, the difference between the annual maximum temperature and the lowest temperature in the northern region is more than 40 掳C. considering the influence of solar radiation, the surface temperature of the structure can be more than 60 掳C ~ (100 掳C), and the spatial structure itself is often a high-order statically indeterminate structure. In the process of structure construction, it is easy to produce a large internal force of construction, and there are major hidden dangers of safety. In view of this, the construction and assembly process of new large-span spatial structures is numerically simulated. This paper discusses the influence of different temperature models on the structure assembly (temperature stress), and finally gives a better calculation model of the construction assembly temperature.
【作者单位】：南昌工程学院土木与建筑工程学院;
【基金】：江西省科技支撑(2013BBG70099) 江西省青年基金(20144BAB2160014) 江西省教改课题(JXJG-12-18-18)
【分类号】：TU745.2

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