曲线分幅共墩悬浇T构梁纵、横桥向不平衡控制方法OA
The Control Method for Longitudinal & Transverse Unbalance of Curve-split Common Pier Suspended Sast T-structure Beam
依托某特大桥主桥预应力混凝土连续刚构桥工程,对悬浇T构梁进行了受力分析,并分析了齿块荷载对主梁线形的影响,发现在大悬臂状态下,较小重量的齿块会对主梁产生较大力矩,且在监控计算中需要考虑预应力锚固齿块对主梁的影响;运用有限元分析方法计算出了不平衡力矩,再根据等弯矩配重原理给出了悬浇T构梁纵、横桥向的配重方案,并对横桥向的配重方案加以计算分析,验证了配重方案的可行性和准确性.
Based on the prestressed concrete continuous rigid frame bridge project of the main bridge of a large bridge,the force of the suspended cast T-frame beam is analyzed as well as the influence of tooth block load on the linear shape of the main beam.It is found that under the condition of large cantilever,the smaller weight of the tooth block will produce larger torque on the main beam.The influence of the prestressed anchor tooth block should be consid-ered in the monitoring calculation;The unbalance moment is calculated by the finite element method.According to the principle of equal bending moment,the counterweight scheme of the longitudinal and transverse bridge direction is given,and one of the transverse bridge direction is calculated and analyzed to verify the feasibility and accuracy.
杨卫涛;刘兆奇;丁建刚;程高
甘肃公航旅天庄高速公路管理有限公司,甘肃天水 741000长安大学公路学院,陕西西安 710064中铁七局集团有限公司,河南郑州 450016
交通运输
大跨径连续梁悬浇T构梁配重不平衡齿块等弯矩有限元分析
long span continuous beamcantilevered T-frame beamcounterweightunbalancetooth blockequal bending momentfinite element analysis
《市政技术》 2024 (001)
60-67 / 8
甘肃省重点研发计划-工业类项目(22YF11GA304);陕西省地方标准项目(22-59B);陕西省秦创原交通基础设施融合与智能建造'科学家+工程师'队伍建设项目,陕西省秦创原"科学家+工程师"队伍建设项目(2022KXJ-036)
评论