無梁拱(gong)(太空瓦)有(you)哪些(xie)好處(chu)?
無梁拱(太空瓦)結構的(de)好處不僅僅體現在(zai)跨度大、成(cheng)本低、施工(gong)快這三點上，江(jiang)蘇杰達鋼(gang)結構工(gong)程(cheng)有限公司今天(tian)帶大家深入認(ren)識一下金屬拱形波紋鋼(gang)屋蓋結構的(de)好處。
無梁拱(太空瓦(wa))的具(ju)體型號(hao)為914-610(拱形屋頂被廣泛用于工業廠房、倉儲庫房、體育場館、集貿(mao)市(shi)場、車庫機(ji)庫等(deng)，它(ta)無梁無擦、空間高大(da)開(kai)闊，可以隨意分(fen)割(ge)組合，使用方(fang)便(bian)，自重輕、剛性強、彈性好、抗震性能優越(yue)等(deng)特點。
MIC240/120拱(gong)(gong)(gong)(gong)形屋(wu)面(mian)還(huan)具有(you)承壓效果，拱(gong)(gong)(gong)(gong)所承受的(de)(de)荷載(zai)(zai)不(bu)同(tong)，其壓力(li)(li)(li)曲(qu)線(xian)的(de)(de)線(xian)形也不(bu)相同(tong)，一般按(an)恒載(zai)(zai)下壓力(li)(li)(li)曲(qu)線(xian)確定(ding);在活載(zai)(zai)作用(yong)下，拱(gong)(gong)(gong)(gong)內力(li)(li)(li)可能產生彎(wan)矩，這時體現出(chu)金屬(shu)波(bo)紋鋼(gang)屋(wu)蓋的(de)(de)好處：鉸(jiao)(jiao)的(de)(de)設置(zhi)就(jiu)會影響拱(gong)(gong)(gong)(gong)內彎(wan)矩的(de)(de)分布狀況。與剛架相仿，只有(you)地基良好或(huo)兩側拱(gong)(gong)(gong)(gong)肢處有(you)穩定(ding)邊跨結構(gou)時才采用(yong)無鉸(jiao)(jiao)拱(gong)(gong)(gong)(gong)，這種拱(gong)(gong)(gong)(gong)很少用(yong)于房屋(wu)建筑。雙(shuang)鉸(jiao)(jiao)拱(gong)(gong)(gong)(gong)應(ying)用(yong)較(jiao)多(duo)，為適應(ying)軟弱地基上支座沉降差及拱(gong)(gong)(gong)(gong)拉桿變(bian)形，最好采用(yong)靜定(ding)結構(gou)的(de)(de)三鉸(jiao)(jiao)拱(gong)(gong)(gong)(gong)。
金屬波(bo)紋鋼(gang)屋蓋好處(chu)在(zai)于(yu)這種結構拱以(yi)以(yi)曲桿抗衡(heng)并傳(chuan)遞(di)外力(li)給支座，故(gu)鉸支座不僅承(cheng)(cheng)受(shou)豎向力(li)，并有相(xiang)當大的(de)(de)水平向外的(de)(de)拱腳推(tui)(tui)(tui)力(li)，其合力(li)就(jiu)位(wei)于(yu)拱軸曲線在(zai)支座點的(de)(de)切線方(fang)向上。拱腳有推(tui)(tui)(tui)力(li)是其主要(yao)力(li)學特征之(zhi)一，矢高(gao)f越小，推(tui)(tui)(tui)力(li)越大。一次超(chao)靜(jing)定的(de)(de)雙鉸拱，支座的(de)(de)垂直(zhi)或水平位(wei)移(yi)(yi)均(jun)會引起內力(li)變化，對支座在(zai)推(tui)(tui)(tui)力(li)作(zuo)用下(xia)無(wu)變位(wei)的(de)(de)要(yao)求就(jiu)更嚴格(ge)。由此可(ke)見，為了使拱保(bao)持正常工作(zuo)，務必確保(bao)其支座能承(cheng)(cheng)受(shou)住推(tui)(tui)(tui)力(li)而(er)不位(wei)移(yi)(yi)，故(gu)拱腳推(tui)(tui)(tui)力(li)的(de)(de)結構處(chu)理，是拱形屋頂設計的(de)(de)中心(xin)問題(ti)。
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