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组合式桁架已在国内外推广使用,如通用图集EG907、CG315中的吊车梁、屋架。苏联卡列斯特托拉斯推荐如图3a中的屋架,我们设计并已建成如图4的15至18米跨度屋架,以
The combined truss has been widely used at home and abroad, such as the crane beam and truss in General Atlas EG907 and CG315. The Soviet Union has recommended the truss in Fig. 3a for the roofing of Fig. 3a. We designed and built a 15- to 18-meter span truss as shown in Fig. 4.