這類方式可簡化工作程序流程，提升組裝(zhuang)(zhuang)速率，但桁(heng)(heng)架結構預制(zhi)構件較(jiao)(jiao)重，實際操(cao)作較(jiao)(jiao)艱難。半一貝(bei)雷(lei)片(pian)體(ti)式組裝(zhuang)(zhuang)，是將下(xia)弦(xian)(xian)提升弦(xian)(xian)桿(gan)與桁(heng)(heng)架結構事先(xian)(xian)用弦(xian)(xian)桿(gan)地腳螺栓連(lian)在(zai)一起，待拼裝(zhuang)(zhuang)好后(hou)，再拼裝(zhuang)(zhuang)桁(heng)(heng)架上(shang)弦(xian)(xian)加強弦(xian)(xian)桿(gan)。單個(ge)構件拼裝(zhuang)(zhuang)是將桁(heng)(heng)架平放在(zai)拼裝(zhuang)(zhuang)位置處(chu)，先(xian)(xian)拼裝(zhuang)(zhuang)下(xia)弦(xian)(xian)加強弦(xian)(xian)桿(gan)，再把桁(heng)(heng)架豎直拼裝(zhuang)(zhuang)桁(heng)(heng)架上(shang)弦(xian)(xian)加強弦(xian)(xian)桿(gan)，這種方法(fa)作業程序較(jiao)(jiao)繁，但單個(ge)構件較(jiao)(jiao)輕，貝(bei)雷(lei)梁(liang)操(cao)作較(jiao)(jiao)輕便。