徒骇河特大桥施工监控应力监测与分析  

Stress monitoring and analysis in construction monitoring of Tuhai River extra large bridge

作　　者：张太磊 徐兴伟 王明 ZHANG Tailei;XU Xingwei;WANG Ming(Shandong Hi-Speed Engineering Testing Co.,Ltd.,Shandong Jinan 250002 China;College of Transportation Engineering,Shandong Jianzhu University,Shandong Jinan 250101 China)

机构地区：[1]山东高速工程检测有限公司,山东济南250002 [2]山东建筑大学交通工程学院,山东济南250101

出　　处：《山东交通科技》2024年第5期22-24,34,共4页

摘　　要：为确保徒骇河特大桥施工过程的安全性,利用midas Civil建立非线性有限元模型,分别在主梁浇筑各阶段和全桥二期铺装后对主梁关键截面进行应变数据采集,并对实测值与理论值的误差进行处理,对数值模型进行迭代修正,依据最终得出的高精度模型对施工质量进行实时监测。监测结果表明:主梁浇筑过程中,处于全截面受压状态,各应力监测截面实测数据与数值模拟计算值较吻合;主梁二期铺装后,主梁整体应力数据与数值模拟规律一致且无异常变化,结构整体处于安全状态。To ensure the safety of the construction process for the Tuhai River extra large bridge,a nonlinear finite element model was established using midas Civil.Strain data were collected at critical sections of the main beam during the pouring stage of the main beam and after the second-phase pavement of the entire bridge.The errors between the measured values and theoretical values were processed,and the numerical model was iteratively corrected.Real-time monitoring of construction quality was then conducted based on the final high-precision model.The monitoring results indicated that during the pouring process of the main beam,it was in a fully compressed section state,and the measured data of each stress monitoring section were in good agreement with the numerical simulation values.After the second-phase pavement of the main beam,the overall stress data of the main beam were consistent with the numerical simulation patterns,and there were no abnormal changes,indicating that the overall structure was in a safe condition.

关 键 词：桥梁工程 应力监测 正装分析 连续梁桥 数值模拟 

分 类 号：U448.215[建筑科学—桥梁与隧道工程]