本文選題：外圍裝飾結(jié)構(gòu) + 風(fēng)荷載　； 參考：《力學(xué)季刊》2014年03期

【摘要】：在建筑外圍布置復(fù)雜裝飾結(jié)構(gòu)能夠進(jìn)一步提高建筑的視覺效果,但復(fù)雜裝飾結(jié)構(gòu)對(duì)風(fēng)荷載的敏感性往往要超過主體建筑,因此對(duì)建筑結(jié)構(gòu)的抗風(fēng)設(shè)計(jì)安全性提出了更高的要求.建筑外圍裝飾結(jié)構(gòu)由于其體量小數(shù)量大而導(dǎo)致直接進(jìn)行物理風(fēng)洞試驗(yàn)變得幾乎不可能,因此本文研究利用數(shù)值風(fēng)洞技術(shù)來解決外圍裝飾結(jié)構(gòu)的風(fēng)荷載問題.結(jié)合高性能的硬件計(jì)算平臺(tái),通過設(shè)置合理的網(wǎng)格剖分形式,解決了流蘇結(jié)構(gòu)多個(gè)移動(dòng)位置下的三維空間高質(zhì)量網(wǎng)格的生成難題.數(shù)值模擬了各層流蘇在不同風(fēng)向角下的風(fēng)荷載體型系數(shù)分布規(guī)律,并統(tǒng)計(jì)分析了所有風(fēng)向角下流蘇結(jié)構(gòu)體型系數(shù)極值分布,給出了設(shè)計(jì)所需的各層流蘇極值風(fēng)參數(shù)取值范圍.數(shù)值模擬結(jié)果顯示出了流蘇結(jié)構(gòu)風(fēng)荷載的極值區(qū)域位于建筑外形的拐角區(qū)域,當(dāng)結(jié)構(gòu)面臨可能的大風(fēng)天氣時(shí),流蘇結(jié)構(gòu)的停止位置宜避免將長(zhǎng)條的流蘇桿件置于上述區(qū)域,以提高流蘇結(jié)構(gòu)的抗風(fēng)安全性.
[Abstract]:The complex decoration structure can improve the visual effect of the building further, but the sensitivity of the complex decoration structure to the wind load is often higher than that of the main building, so the safety of the wind resistant design of the building structure is put forward a higher requirement. It is almost impossible to carry out the physical wind tunnel test directly because of the small volume and large quantity of the exterior decoration structure. Therefore, the numerical wind tunnel technique is used to solve the wind load problem of the peripheral decoration structure. Based on the high performance hardware computing platform, the problem of generating high quality mesh in three dimensional space with multiple moving positions of tassel structure is solved by setting a reasonable mesh generation form. The distribution law of body shape coefficient of each layer of tassel under different wind direction angle is simulated numerically, and the extreme distribution of shape coefficient of tassel structure under all wind direction angles is statistically analyzed, and the range of extreme wind parameters of each layer of tassel for design is given. The numerical simulation results show that the extreme region of wind load of tassel structure is located at the corner of the building shape. When the structure is faced with a possible strong wind weather, the stop position of the tassel structure should be avoided by placing the long tassel bar in the above area. In order to improve the wind safety of tassel structure.
【作者單位】： 上海應(yīng)用技術(shù)學(xué)院城市建設(shè)與安全工程學(xué)院;同濟(jì)大學(xué)土木工程防災(zāi)國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【基金】：上海市自然科學(xué)基金(13ZR1441100)
【分類號(hào)】：TU312.1
，

本文編號(hào)：1902505