框架型型鋼支(zhi)(zhi)架主要用(yong)于(yu)水平(ping)管道的(de)承(cheng)(cheng)(cheng)(cheng)重。該類支(zhi)(zhi)架常(chang)(chang)利用(yong)系(xi)統已有的(de)梁(liang)(liang)柱作(zuo)為(wei)生根點，其特點是承(cheng)(cheng)(cheng)(cheng)重能(neng)力大(da)(da)，支(zhi)(zhi)承(cheng)(cheng)(cheng)(cheng)剛度(du)大(da)(da)，常(chang)(chang)代替系(xi)統支(zhi)(zhi)承(cheng)(cheng)(cheng)(cheng)梁(liang)(liang)進行局部(bu)支(zhi)(zhi)承(cheng)(cheng)(cheng)(cheng)。

  常見的框架型型鋼支架形(xing)式如(ru)圖9-32所示(shi)。圖9-32中(zhong)共給出了A、B、C、D四種(zhong)形式(shi)，究竟(jing)采用(yong)哪(na)種(zhong)形式(shi)視(shi)原有的梁柱和被支承管的位置而定(ding)。一(yi)般情況(kuang)下(xia)，該種(zhong)支架的尺寸最(zui)(zui)長應不(bu)超(chao)(chao)過(guo)1500mm，最(zui)(zui)高尺寸H應不(bu)超(chao)(chao)過(guo)2000mm，支承荷載(zai)視(shi)所用(yong)型鋼規格(ge)、尺寸L和H而定(ding)，一(yi)般最(zui)(zui)多不(bu)超(chao)(chao)過(guo)10000N。