| 1. | Wind tunnel tests of the stadium cantilevered roofs and mathematical calculation 体育馆屋盖的风洞试验研究和数值计算 |
| 2. | Effect of geometrical nonlinearity on wind induced response of cable stayed cantilevered roof of stadium 几何非线性对斜拉索悬挑屋盖风激动力响应的影响 |
| 3. | The seismic behavior of sunflower - patterned cable dome and sunflower - patterned cantilever roof are analyzed 地震荷载作用下,结构中的动位移和动内力都不大。 |
| 4. | For sunflower - patterned cable dome , the prestress has no effects on mode ; but for sunflower - patterned cantilever roof , the prestress has evident effects on mode 预应力对葵花型索穹顶结构的振型基本没有影响,但对葵花型张拉挑蓬结构的振型影响较大。 |
| 5. | The simplified method , one time statically indeterminate plane truss , for the solution of sunflower - patterned cable dome and sunflower - patterned cantilever roof is introduced . this method is clear and convenient and the results are reliable 提出了采用一次超静定平面径向桁架结构,求解荷载态下葵花型索穹顶和葵花型环形挑篷内力和位移的简捷计算方法,该方法力学概念明确,思路清晰,计算简便,结果可靠。 |
| 6. | The solution of initial prestress considering dead load is presented , which is more accurate . the calculation model of sunflower - patterned cable dome is built up . the static behavior of sunflower - patterned cable dome and sunflower - patterned cantilever roof is analyzed by ansys program and its results show that thesis two structures have good stiffness and load capability 建立了葵花型索穹顶结构的计算模型;运用ansys有限元软件对葵花型索穹顶结构和葵花型张拉挑蓬结构作了静力性能分析,结果显示这两种结构具有良好的刚度和承载能力。 |
| 7. | The mode number and the frequencies range , which were considered during calculating the wind - induced responses of large cantilevered roof by using the method of frequency domain , were analysed and discussed , according to the results of wind tunnel tests of bahamas and guinea stadium grandstand cantilevered roofs , and the rules that rms displacement and rms internal force responses under strong wind force changing with participant modes number and frequencies range were obtained , and which could be explained from the point of wind pressure power spectrum densities of the measured points on surface of the roof 摘要根据援巴哈马体育场和援几内亚体育场主看台悬挑屋盖风洞试验数据结果,分析和探讨了采用频域分析法计算大跨度悬挑屋盖风振响应时应考虑的结构模态数和频率范围,得到强风作用下悬挑屋盖结构均方根位移与内力响应随参与计算的模态数和频率范围的变化规律,并从屋盖表面测点风压谱密度的角度解释了这种变化规律。 |
| 8. | The dynamic behavior of sunflower - patterned cable dome and sunflower - patterned cantilever roof are analyzed . the effects of prestress on the frequency and mode is considered , the results show that the frequency is increased with increasing the prestress , but prestress affects more on lower order frequency than higher 分析了葵花型索穹顶结构和葵花型张拉挑蓬结构的动力特性;考虑了预应力对这两种结构自振频率和振型的影响,结果表明,预应力增加,这两种结构的自振频率也增加,但预应力对低阶频率比高阶频率影响大。 |