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| ASSEMBLY TECHNIQUE OF STEEL TUBE ARCH RIBS FOR 100m MAIN SPAN OF HONGZHOU MAJOR BRIDGE |
| JIANG Xian-yang,CAI Jin-huo |
| Eleventh Engineering Bureau of MOR,Xiangfan,Hubei 441003 |
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Abstract The main span of the Hongzhou highway major bridge in Sichuan Province is a half-through composite steel tube concrete arch bridge with a length of 100 m and a height of 25 m. The arch circle consists of two ribs. Each rib was constructed by three circular steel tubes with variable cross-sec- dons. The arch ribs were assembled by hoisting and fabricated in high-altitude. The paper makes calculation and check for the hoisting scheme,describes the construction method in detail,and introduces the techniques for its position control and the curvature control of the arch ribs.
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Received: 25 February 1999
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1999, Vol. 16 
