無梁拱(gong)(太空瓦)的具體型(xing)號為914-610(拱(gong)形屋頂被廣泛用于工(gong)業廠房(fang)、倉儲(chu)庫房(fang)、體育(yu)場(chang)館、集貿市場(chang)、車庫機庫等，它無梁無擦(ca)、空間高大開闊(kuo)，可以隨意分(fen)割組合，使(shi)用方便，自重輕、剛性(xing)強、彈性(xing)好(hao)、抗震性(xing)能優(you)越(yue)等特點。
拱(gong)(gong)形(xing)屋面還(huan)具有(you)承(cheng)壓效果，拱(gong)(gong)所承(cheng)受的荷載(zai)不同，其(qi)壓力曲線(xian)(xian)的線(xian)(xian)形(xing)也(ye)不相同，一般按恒載(zai)下(xia)壓力曲線(xian)(xian)確定;在(zai)活載(zai)作用(yong)下(xia)，拱(gong)(gong)內(nei)力可能產生彎矩，這時體現出(chu)金(jin)屬波(bo)紋鋼屋蓋的好處：鉸的設置就會影響拱(gong)(gong)內(nei)彎矩的分布狀況。與剛架相仿，只有(you)地基(ji)(ji)良(liang)好或兩側拱(gong)(gong)肢處有(you)穩定邊跨結構時才采用(yong)無(wu)鉸拱(gong)(gong)，這種拱(gong)(gong)很少(shao)用(yong)于房(fang)屋建(jian)筑。雙鉸拱(gong)(gong)應(ying)用(yong)較多，為適應(ying)軟弱地基(ji)(ji)上支座(zuo)沉降差(cha)及拱(gong)(gong)拉(la)桿變形(xing)，最好采用(yong)靜定結構的三鉸拱(gong)(gong)。
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