钢管混凝土组合格构柱高墩偏压试验研究

雅泸高速公路黑石沟特大桥在国内首次提出并采用了钢管混凝土组合格构柱高墩。为研究这种结构形式高墩的组合性能,进行了偏压试验和破坏试验,考察了钢管混凝土柱肢、钢管外包混凝土及腹板剪力墙的受力性能。试验结构表明:正常使用极限状态下,钢管混凝土组合格构柱处于小偏心受压,结构处于弹性状态。

Study on Eccentric Compression Test of Concrete-filled Steel Tube Assembled Lattice Column High Pier

The concrete-filled steel tube assembled lattice column high pier is firstly put forward and used in Heishigou Super-long Bridge in Yalu Expressway of China.In order to study the assembling performance of this structural high pier,the eccentric compression test and the destroying test are carried out to inspect the stress performances of concrete-filled steel tube column pier,steel tube concrete and web shear wall.The tested structures show that the concrete-filled steel tube assembled lattice column is at the small eccentric compression and the structure is at the spring status under the normal using limitation.