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作者在以前的非线性有限元方法基础之上,发展了一种新的算法,并将其用于研究整体式桥台桥梁中的桩由于温度引起的横向偏移对竖向承载能力的影响。文中提供了理论分析方法和若干分析实例,其中包括H形钢支承桩对于弱轴、强轴和45°轴的弯曲问题。结果表明,桩的竖向承载能力明显地受到横向位移的影响。同时得出结论,目前美国大多数州公路部门所采用的有关整体式桥台桥梁的长度限制是保守的。
Based on the previous nonlinear finite element method, a new algorithm is developed and used to study the influence of pile-up due to temperature on the vertical bearing capacity of pile in monolithic bridge abutment. In this paper, theoretical analysis methods and some analysis examples are provided, including the bending of H-shaped steel bearing piles for the weak axis, the strong axis and the 45 ° axis. The results show that the vertical bearing capacity of the pile is obviously affected by the lateral displacement. At the same time, it is concluded that the length restrictions on monolithic abutment bridges adopted by the highway departments in most U.S. states are currently conservative.