中厚壁冷弯钢管混凝土桥墩合理截面研究

Reasonable Section Research on Medium-walled Cold-formed Steel Piers-walled Cold-formed Steel Piers

结合工程实例,通过ANSYS分析在同等条件下用中厚壁冷弯钢管混凝土桥墩取代钢筋混凝土桥墩时,中厚壁冷弯钢管混凝土桥墩所需要的合理截面尺寸。文中从承载力、墩顶水平位移和工程经济适用性3个方面进行比较分析。结果表明:依托实际工程项目的钢筋混凝土桥墩截面为1.6m×4m时,与其等效的合理中厚壁冷弯钢管混凝土桥墩截面为2.2m×1.8m。

With practical instances,under the same conditions by ANSYS,the reasonable section that is used to be instead of reinforced concrete bridge piers with medium-walled cold-formed steel pipes is researched.A comparative analysis from three aspects is made in the article,which are bearing capaci-ty,lateral displacement of pier and the engineering applicability of the economic.The results show that：when the actual section of the reinforced concrete pier is 1.6 m×4 m,the reasonable equivalent section of medium-walled cold-formed steel pier is 2.2 m×1.8 m.