码头荷载对全直桩码头分段长度的影响

Influence of Wharf Load on Subsection Length of Straight Pile Wharf

对上部结构为装配整体式高桩梁板结构,规范规定结构的分段长度宜取为60~70 m,而在实际工程中,已有采用分段长度超过规范要求的案例,且运行状态良好,因此在实际工程中研究码头的合理分段长度具有重要的意义。本文采用单因素和多因素结合的方法,以均匀地质条件下全直桩码头为例,分析水平荷载、温度荷载及荷载组合情况下结构的位移和内力情况,得出影响码头分段长度的荷载控制因素为水平荷载和温度荷载,且随着结构跨度的变化,两者的主导地位发生变化。合理的码头分段长度应结合码头荷载工况,根据内力和变形来综合选取。

60~70 m long subsection of wharf structure applies to the integral assembled beam-slab superstructure supported on piles according to the relevant code. However, the subsection length is more than the specified length in the engineering practice, and the integral structures work well. So it is important to study reasonable subsection length of a wharf in engineering design. Based on straight pile wharf under uniform geological condition, the method of single factor combined with multiple factors has been used to analyze the inner force and deformation of wharf structure under the condition of horizontal load, temperature load and other load combinations. The analysis results show that the horizontal and temperature loads affect the subsection length of a wharf, and the dominant position of the above two loads will change with the variation of structural span. Reasonable subsection length of a wharf should be selected by analyzing inner force and deformation under the work conditions of wharf loads.