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采用先按规范和设计图纸取值计算桥梁结构理想状态,后根据实测结果进行参数识别修正模型参数的方法,较好地预测施工阶段的立模标高。采用相对立模标高较好地解决了温度变化对主梁标高的影响。此方法应用于珠江大桥的监控过程中,确保了合拢精度,使成桥后的结构线形和内力满足设计要求。
The ideal condition of the bridge structure is calculated according to the specifications and design drawing values, and then the parameter identification and correction of the model parameters are carried out according to the measured results to better predict the vertical elevation of the construction stage. The relative elevation of the mold is a good solution to the temperature changes on the main beam elevation. This method is applied to the monitoring process of the Pearl River Bridge to ensure the closing accuracy, so that the structural linearity and internal force after the bridge can meet the design requirements.