MN73屋(wu)(wu)面(mian)系(xi)統可通過(guo)屋(wu)(wu)面(mian)板的(de)自由滑動(dong)釋放熱(re)脹冷(leng)縮產生的(de)形(xing)變(bian)。系(xi)統設計時一般將屋(wu)(wu)面(mian)板在屋(wu)(wu)檐處固定(ding)，屋(wu)(wu)脊處自由伸縮，使(shi)該形(xing)變(bian)既不影響建筑(zhu)功能，又不破壞建筑(zhu)外觀。
美耐建筑自(zi)(zi)主研發的(de)(de)滑(hua)(hua)動(dong)(dong)(dong)(dong)支架(jia)是連接屋(wu)面(mian)(mian)(mian)板(ban)和結構件(jian)、且實現屋(wu)面(mian)(mian)(mian)板(ban)自(zi)(zi)由(you)滑(hua)(hua)動(dong)(dong)(dong)(dong)的(de)(de)關鍵。一方面(mian)(mian)(mian)，可(ke)滑(hua)(hua)動(dong)(dong)(dong)(dong)式連接件(jian)可(ke)同時承載(zai)屋(wu)面(mian)(mian)(mian)上的(de)(de)雪壓和人行(xing)壓力，也(ye)可(ke)以(yi)拉緊屋(wu)面(mian)(mian)(mian)，避免(mian)被風掀起。另一方面(mian)(mian)(mian)，連接件(jian)的(de)(de)可(ke)滑(hua)(hua)動(dong)(dong)(dong)(dong)性能可(ke)以(yi)使屋(wu)面(mian)(mian)(mian)板(ban)自(zi)(zi)由(you)滑(hua)(hua)動(dong)(dong)(dong)(dong)，從而釋放熱應(ying)力，避免(mian)連接破壞。同時，檁(lin)條預沖孔(kong)技術也(ye)確保了數量(liang)眾多(duo)的(de)(de)連接件(jian)在一條直(zhi)線(xian)上順(shun)暢(chang)滑(hua)(hua)動(dong)(dong)(dong)(dong)。
此外，在高低跨處(chu)、屋(wu)面(mian)開(kai)口等節點處(chu)，屋(wu)面(mian)的熱脹冷(leng)縮(suo)也得(de)到了(le)妥善處(chu)理。
