爆炸載荷下中空鋼化夾層玻璃動力響應(yīng)研究
發(fā)布時間：2018-11-05 17:47
【摘要】：中空鋼化夾層玻璃是一種現(xiàn)代高層建筑新型的玻璃幕墻復(fù)合結(jié)構(gòu),具有保溫隔熱、隔音、抗冷凝等優(yōu)良性能,還具有抵抗一定的載荷和沖擊力的作用,其結(jié)合了中空玻璃與夾層玻璃的優(yōu)點,使之在近幾年時間里逐漸成為現(xiàn)代高層建筑玻璃幕墻的首選。由于一些人為或者不可避免的自然因素造成的災(zāi)害仍然威脅著大家的安全。所以為了保證人員及財產(chǎn)的安全,避免由于災(zāi)害致使室內(nèi)人員受到玻璃碎片飛濺的傷害,中空鋼化夾層玻璃的抗爆性能研究是國內(nèi)外研究的熱點及必要。根據(jù)近幾年國內(nèi)外學(xué)者在玻璃幕墻抗爆性能方面的工作及研究成果,本文采用有限元模擬與理論分析的手段,研究了爆炸載荷作用下中空鋼化夾層玻璃的動力響應(yīng)。具體的研究內(nèi)容包括:(1)利用LS-DYNA有限元軟件,建立了中空夾層玻璃模型,并基于多物質(zhì)ALE算法模擬了在35g TNT,爆距為50cm時中空夾層玻璃的動力學(xué)響應(yīng),通過變化PVB夾層屬性和中空氣體層厚度分析了其變化對玻璃板動態(tài)響應(yīng)的影響。(2)相同工況下,利用LS-DYNA軟件,分別對比了中空夾層玻璃與夾層玻璃以及中空夾層玻璃與中空玻璃的板心撓度,依此來對比這三種玻璃的抗爆性能,其對比結(jié)果為抗爆玻璃的選型和設(shè)計提供科學(xué)參考依據(jù)。(3)基于薄板的小撓度理論和玻璃等效厚度計算規(guī)范,對爆炸載荷作用下的中空鋼化夾層玻璃的撓度進行了理論計算,將理論得到的板心撓度最大值與數(shù)值模擬得到的值進行了比擬驗證。通過以上幾方面的研究,得到主要結(jié)論有:1、爆炸載荷下的中空鋼化夾層玻璃下板心的撓度較上板心的撓度大,表明受爆炸載荷的中空夾層玻璃,其下板受到的影響較上板明顯。(1)隨著氣體層厚度的增加,中空鋼化夾層玻璃的上層玻璃板撓度減小,而下層玻璃板撓度增加,表明中空氣體層的厚度越大,其下層玻璃越容易破壞。且在中空氣體層厚度為12mm時,板心最大撓度變化率發(fā)生突變。(2)一定氣體層厚度下,隨PVB夾層楊氏模量的增加,上下玻璃板的撓度均減小。且PVB楊氏模量達到500MPa時,板心最大撓度變化率發(fā)生突變。因此在該工況下,中空氣體層厚度不應(yīng)該超過12mm,而PVB楊氏模量不應(yīng)該小于500MPa。2、相同尺寸的中空夾層玻璃相比于夾層玻璃,中空夾層玻璃內(nèi)側(cè)玻璃板心最大撓度較夾層玻璃減小了1/4;相同工況下的中空鋼化夾層玻璃上下玻璃板相比于中空玻璃,其撓度分別減小了1/2與1/3。綜合上述兩種對比結(jié)果,都表明中空鋼化夾層玻璃有更好的抗爆性。
[Abstract]:Hollow toughened laminated glass is a new type of glass curtain wall composite structure of modern high-rise building. It has excellent properties such as heat insulation, sound insulation, anti-condensation and so on, and also has the function of resisting certain load and impact. It combines the advantages of insulating glass and laminated glass, making it the first choice of glass curtain wall of modern high-rise building in recent years. Disasters caused by some man-made or unavoidable natural factors still threaten everyone's safety. Therefore, in order to ensure the safety of personnel and property and avoid the damage of indoor personnel caused by the damage caused by glass fragments, the research on the anti-explosion performance of hollow toughened laminated glass is a hot topic and necessary at home and abroad. According to the work and research achievements of domestic and foreign scholars in the field of anti-explosion performance of glass curtain wall in recent years, the dynamic response of hollow toughened laminated glass under explosion load is studied by means of finite element simulation and theoretical analysis. The specific research contents are as follows: (1) the hollow laminated glass model is established by using LS-DYNA finite element software, and the dynamic response of the hollow laminated glass is simulated based on the multi-material ALE algorithm when the explosion distance of 35g TNT, is 50cm. By changing the properties of PVB interlayer and the thickness of hollow gas layer, the influence of the change on the dynamic response of glass plate is analyzed. (2) under the same working condition, the LS-DYNA software is used. The plate center deflection of the hollow laminated glass and the sandwich glass and the hollow laminated glass and the hollow glass are compared respectively, and the explosion-resistant properties of the three kinds of glass are compared according to the deflection of the plate center of the hollow laminated glass and the hollow laminated glass. The results provide a scientific reference for the selection and design of explosion-resistant glass. (3) the theory of small deflection based on thin plate and the equivalent thickness calculation specification of glass. The deflection of hollow toughened laminated glass subjected to explosive loading is calculated theoretically and the maximum deflection of plate center obtained by the theory is compared with the value obtained by numerical simulation. The main conclusions are as follows: 1. The deflection of the hollow toughened laminated glass core under explosive load is larger than that of the upper plate core, which indicates that the hollow laminated glass subjected to explosive load has a larger deflection than that of the upper plate core. (1) with the increase of the thickness of the gas layer, the deflection of the upper glass plate of the hollow toughened laminated glass decreases, while the deflection of the lower layer of the glass plate increases, which indicates that the thickness of the hollow gas layer increases. The lower the glass, the easier it is to break. When the thickness of the hollow gas layer is 12mm, the maximum deflection of the plate center changes suddenly. (2) with the increase of the Young's modulus of the PVB interlayer, the deflection of the upper and lower glass plates decreases with the increase of the thickness of the gas layer. When the Young's modulus of PVB reaches 500MPa, the maximum deflection of plate center changes suddenly. Therefore, under this condition, the thickness of the hollow gas layer should not exceed 12mm, and the Young's modulus of PVB should not be less than 500MPa.2.The same size of hollow laminated glass should be compared to the laminated glass. The maximum deflection of the inner glass core of the hollow laminated glass is 1 / 4 less than that of the laminated glass. The deflection of the upper and lower glass plates of the hollow toughened laminated glass under the same working conditions is reduced by 1 / 2 and 1 / 3 respectively compared with the hollow glass. The results show that the hollow toughened laminated glass has better explosion resistance.
【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TU973.39
本文編號：2312841
[Abstract]:Hollow toughened laminated glass is a new type of glass curtain wall composite structure of modern high-rise building. It has excellent properties such as heat insulation, sound insulation, anti-condensation and so on, and also has the function of resisting certain load and impact. It combines the advantages of insulating glass and laminated glass, making it the first choice of glass curtain wall of modern high-rise building in recent years. Disasters caused by some man-made or unavoidable natural factors still threaten everyone's safety. Therefore, in order to ensure the safety of personnel and property and avoid the damage of indoor personnel caused by the damage caused by glass fragments, the research on the anti-explosion performance of hollow toughened laminated glass is a hot topic and necessary at home and abroad. According to the work and research achievements of domestic and foreign scholars in the field of anti-explosion performance of glass curtain wall in recent years, the dynamic response of hollow toughened laminated glass under explosion load is studied by means of finite element simulation and theoretical analysis. The specific research contents are as follows: (1) the hollow laminated glass model is established by using LS-DYNA finite element software, and the dynamic response of the hollow laminated glass is simulated based on the multi-material ALE algorithm when the explosion distance of 35g TNT, is 50cm. By changing the properties of PVB interlayer and the thickness of hollow gas layer, the influence of the change on the dynamic response of glass plate is analyzed. (2) under the same working condition, the LS-DYNA software is used. The plate center deflection of the hollow laminated glass and the sandwich glass and the hollow laminated glass and the hollow glass are compared respectively, and the explosion-resistant properties of the three kinds of glass are compared according to the deflection of the plate center of the hollow laminated glass and the hollow laminated glass. The results provide a scientific reference for the selection and design of explosion-resistant glass. (3) the theory of small deflection based on thin plate and the equivalent thickness calculation specification of glass. The deflection of hollow toughened laminated glass subjected to explosive loading is calculated theoretically and the maximum deflection of plate center obtained by the theory is compared with the value obtained by numerical simulation. The main conclusions are as follows: 1. The deflection of the hollow toughened laminated glass core under explosive load is larger than that of the upper plate core, which indicates that the hollow laminated glass subjected to explosive load has a larger deflection than that of the upper plate core. (1) with the increase of the thickness of the gas layer, the deflection of the upper glass plate of the hollow toughened laminated glass decreases, while the deflection of the lower layer of the glass plate increases, which indicates that the thickness of the hollow gas layer increases. The lower the glass, the easier it is to break. When the thickness of the hollow gas layer is 12mm, the maximum deflection of the plate center changes suddenly. (2) with the increase of the Young's modulus of the PVB interlayer, the deflection of the upper and lower glass plates decreases with the increase of the thickness of the gas layer. When the Young's modulus of PVB reaches 500MPa, the maximum deflection of plate center changes suddenly. Therefore, under this condition, the thickness of the hollow gas layer should not exceed 12mm, and the Young's modulus of PVB should not be less than 500MPa.2.The same size of hollow laminated glass should be compared to the laminated glass. The maximum deflection of the inner glass core of the hollow laminated glass is 1 / 4 less than that of the laminated glass. The deflection of the upper and lower glass plates of the hollow toughened laminated glass under the same working conditions is reduced by 1 / 2 and 1 / 3 respectively compared with the hollow glass. The results show that the hollow toughened laminated glass has better explosion resistance.
【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TU973.39
【參考文獻】
相關(guān)期刊論文 前10條
1 李勝杰;李志強;王志華;李鑫;趙隆茂;;爆炸載荷作用下夾層玻璃裂紋擴展的研究[J];兵工學(xué)報;2014年S2期
2 張其林;陶志雄;王勛;陳峻;謝步瀛;;爆炸作用下夾層玻璃幕墻動力響應(yīng)試驗研究[J];建筑結(jié)構(gòu)學(xué)報;2013年04期
3 段雷琳;高軒能;;爆炸沖擊荷載下玻璃幕墻建筑抗爆研究[J];低溫建筑技術(shù);2012年05期
4 王勛;張其林;陶志雄;陳俊;陳峻;;四邊簡支夾層玻璃承載性能理論和試驗研究[J];建筑結(jié)構(gòu);2012年02期
5 呂衛(wèi)東;黃華;甘露;劉伯權(quán);;玻璃幕墻抗爆防護設(shè)計研究[J];鋼結(jié)構(gòu);2011年12期
6 鄧榮兵;金先龍;陳峻;;爆炸流場與玻璃幕墻動力響應(yīng)的仿真計算方法[J];振動與沖擊;2011年03期
7 陶志雄;張其林;陳俊;陳峻;謝步瀛;;夾層玻璃PVB膠片抗剪性能試驗研究[J];結(jié)構(gòu)工程師;2011年01期
8 鄧榮兵;金先龍;陳峻;;中空夾膠玻璃幕墻爆炸響應(yīng)的三維數(shù)值模擬[J];上海交通大學(xué)學(xué)報;2010年10期
9 葛杰;張端馳;張浩;;建筑玻璃在爆炸荷載下的動力響應(yīng)特征[J];門窗;2010年10期
10 陶志雄;張其林;陳俊;陳峻;謝步瀛;;四邊簡支夾層玻璃受彎承載力試驗研究及有限元分析[J];建筑結(jié)構(gòu)學(xué)報;2010年10期
相關(guān)會議論文 前1條
1 殷永煒;張其林;王丹;;點支式玻璃結(jié)構(gòu)體系發(fā)展概況及技術(shù)述評[A];第二屆全國現(xiàn)代結(jié)構(gòu)工程學(xué)術(shù)研討會論文集[C];2002年
相關(guān)博士學(xué)位論文 前1條
1 龐世紅;夾層玻璃等效厚度研究[D];中國建筑材料科學(xué)研究總院;2009年
相關(guān)碩士學(xué)位論文 前5條
1 李勝杰;爆炸載荷下夾層玻璃的動態(tài)響應(yīng)及裂紋擴展的研究[D];太原理工大學(xué);2015年
2 李永琛;玻璃幕墻結(jié)構(gòu)抗爆炸性能研究[D];沈陽工業(yè)大學(xué);2014年
3 葛玉龍;雙層U形玻璃及中空夾層玻璃受力性能研究[D];南京工業(yè)大學(xué);2013年
4 王學(xué);基于ALE方法求解流固耦合問題[D];國防科學(xué)技術(shù)大學(xué);2006年
5 袁帥;任意拉格朗日—歐拉方法及其在二維數(shù)值計算中的初步應(yīng)用[D];中國工程物理研究院北京研究生部;2003年
，本文編號：2312841
本文鏈接：http://sikaile.net/jianzhugongchenglunwen/2312841.html
最近更新
教材專著
