始對系(xi)(xi)(xi)統(tong)(tong)停止相應的設計(ji)研討和大比(bi)(bi)例(li)實驗，一同(tong)分離(li)理論(lun)計(ji)算剖析了(le)該(gai)支(zhi)撐系(xi)(xi)(xi)統(tong)(tong)較其他支(zhi)撐系(xi)(xi)(xi)統(tong)(tong)的優點。防委曲支(zhi)撐可為構(gou)造或排架構(gou)造提(ti)供(gong)很大的抗側剛度(du)和承載力支(zhi)撐系(xi)(xi)(xi)統(tong)(tong)與(yu)非支(zhi)撐系(xi)(xi)(xi)統(tong)(tong)荷載位(wei)移(yi)曲線對比(bi)(bi)圖(tu)1.支(zhi)撐系(xi)(xi)(xi)統(tong)(tong)與(yu)非支(zhi)撐系(xi)(xi)(xi)統(tong)(tong)荷載位(wei)移(yi)曲線對比(bi)(bi)選(xuan)用支(zhi)撐的構(gou)造系(xi)(xi)(xi)統(tong)(tong)在建筑(zhu)構(gou)造中運用非常普(pu)遍。

    普通(tong)支(zhi)(zhi)撐(cheng)(cheng)受(shou)壓會產生委曲現象，當(dang)支(zhi)(zhi)撐(cheng)(cheng)受(shou)壓委曲后(hou)，剛度(du)和(he)承(cheng)載(zai)力急劇降落。在地(di)震或風的(de)作用下(xia)，支(zhi)(zhi)撐(cheng)(cheng)的(de)內(nei)力在受(shou)壓。普通(tong)支(zhi)(zhi)撐(cheng)(cheng)實驗(yan)滯回曲線(xian)圖2.普通(tong)支(zhi)(zhi)撐(cheng)(cheng)實驗(yan)滯回曲線(xian)和(he)受(shou)拉(la)兩種(zhong)情況下(xia)往復改動。

    當支(zhi)撐(cheng)由壓(ya)曲(qu)情況(kuang)逐步變至(zhi)受(shou)拉情況(kuang)時，支(zhi)撐(cheng)的(de)內(nei)力以(yi)及剛度接近為(wei)零。因此普(pu)通(tong)支(zhi)撐(cheng)在(zai)重復(fu)荷載作(zuo)用(yong)下滯(zhi)回功用(yong)較差為(wei)處置(zhi)普(pu)通(tong)支(zhi)撐(cheng)受(shou)壓(ya)委(wei)(wei)曲(qu)以(yi)及滯(zhi)回功用(yong)差的(de)問(wen)題，在(zai)支(zhi)撐(cheng)外部設(she)置(zhi)套管，約(yue)束支(zhi)撐(cheng)的(de)受(shou)壓(ya)委(wei)(wei)曲(qu)，構成委(wei)(wei)曲(qu)約(yue)束。

標簽：