“桥管结合”与简支大跨径三肢钢管格构式组合梁设计

COMBINATION OF BRIDGE AND PIPELINE" AND DESIGN OF SIMPLE SUPPORT LARGE SPAN THREE-LIMBS STEEL PIPE LATTICE BUILT-UP BEAM

从有压管道工程中跨越障碍的结构──管路桥的实际出发，提出了“桥管结合”的概念．并根据简支大跨径三肢钢管格构式组合梁的设计和运行情况，论述运用“桥管结合”概念设计桥跨结构，能够使其达到节省材料、减轻自重和提高跨越能力的效果。

The paper raises the notion of 'the combination of bridge and pipeline' from the practice of the pipeline- bridge that is a structure of striding over roadblock in stress pipeline engineering. It also points out that by using the notion of 'the combination of bridge and pipeline' to design the bridgr span structure,the result of saving material, relieving deadweight and enhancing striding over ability can be achieved accord ing to the design and running conditions of simple support large span three- limbs steel pipe lattice built- up beam.