连续刚构桥不等长悬臂施工控制措施数值分析

Numerical Analysis of Control Measures for Continuous Rigid Frame Bridge Construction with Unequal Length Cantilever

连续刚构桥具有诸多优点,能够有效满足特大跨径桥梁的受力要求。针对某连续刚构桥悬臂不等长施工方案,本文研究长跨继续施工和短跨压重荷载之间的控制措施,解决不等跨梁桥悬臂浇筑施工过程中可能存在的偏载问题,分析不同加载方式产生的内力和变形,然后依据分析结果,提出合理的建议。

Continuous rigid frame bridges have many advantages and can effectively meet the force requirements of super long span bridges.Aiming at the unequal-length cantilever construction scheme of a continuous rigid frame bridge,this paper studied the control measures between the continuous construction of long-spans and short-spans under heavy load,solved the possible eccentric load problems during the cantilever pouring of unequal-span girder bridges,and analyzed the internal forces and deformations caused by different loading methods,then put forward rea⁃sonable suggestions based on the analysis results.