摘要
绍兴曹娥江袍江大桥主桥为(40+185+185+185+40)m带边拱的3跨中承式系杆拱桥,为了解大桥在发生船桥相撞时的状况,对大桥船撞桥墩撞击力进行计算。采用2个国内规范的计算公式、3个国际桥梁和结构工程协会(IABSE)指南中的公式进行计算,同时建立有限元模型进行仿真计算。经过对比分析,IABSE指南中的索尔-诺特-格林那(SKG)公式与有限元仿真结果基本一致,适用于大桥的最大撞击力计算;桥墩遭受船舶撞击时,最大碰撞力远大于桥墩本身设计的抗撞强度,因此需要设计防撞装置来保护桥墩。
The main bridge of Paojiang Bridge over Caoejiang River in Shaoxing City is a （40 ＋185＋185＋185＋40） m three-span half through tied arch bridge with side arches. To investi- gate the condition of the bridge under vessel collision, the force of vessel colliding against pier was caleulated. Two calculation formulas in Chinese Code and three calculation formulas in the guidelines of International Association for Bridge and Structural Engineering （IABSE） were em- ployed in the calculation and the finite element model was also established to carry out simulation calculation. The contrastive analysis shows that the result calculated by the SKG （Saul-Svelsson, Knott, Greiner） formula in the guidelines of IABSE basically agrees with the simulation result by the finite element model and the SKG formula is suitable for calculation of the maximum vessel collision force of the pier. When vessel colliding against a pier, the maximum collision force is far greater than the anti-collision strength designed for the pier. Therefore, anti-collision facilities should be designed to provide protection for the pier.
出处
《世界桥梁》
北大核心
2011年第5期61-64,共4页
World Bridges
关键词
系杆拱桥
桥墩
撞击力
有限元法
tied arch bridge
pier
collision force
finite element method
