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A platform for research: civil engineering, architecture and urbanism
Cantilever pouring bridge construction linear control method
The invention discloses a linear control method for cantilever casting bridge construction, which comprises the following steps of: dividing influence factors of cantilever casting bridge displacement into four types, respectively determining theoretical calculation values and actual measurement values of the four types of displacement, and recording the ratio of the actual measurement values to the theoretical calculation values as error deviation coefficients; a corrected grey theory is adopted to predict an error offset coefficient of subsequent construction; according to the actual measurement method for the elastic deformation of the hanging basket, the final displacement of the hanging basket is adopted, and the elastic deformation of the hanging basket can be obtained after the deformation of a bridge structure and the inclined displacement of the hanging basket caused by the deformation of the bridge structure are deducted; a corrected grey theory prediction method is provided, that is, a linear optimization algorithm is used for replacing a traditional least square method to determine calculation parameters of the grey theory, and the corrected grey theory is used for predicting the state of the bridge, so that the method has the advantages of being higher in accuracy and clearer in calculation.
本发明公开一种悬臂浇筑桥梁施工线形控制方法，即将悬臂浇筑桥梁位移的影响因素分为四类，分别确定这四类位移的理论计算值和实测值，将实测值和理论计算值的比值记为误差偏离系数，采用修正的灰色理论对后续施工的误差偏移系数进行预测；提供一种挂篮弹性变形的实测方法，即采用挂篮的最终位移，扣除桥梁结构的自身变形和桥梁结构变形造成的挂篮倾斜位移后，即可获得挂篮的弹性变形；提出一种修正的灰色理论预测方法，即用线性最优化的算法取代传统的最小二乘法来确定灰色理论的计算参数，采用修正的灰色理论预测桥梁的状态具有精确度更高，计算更清晰的特点。
Cantilever pouring bridge construction linear control method
The invention discloses a linear control method for cantilever casting bridge construction, which comprises the following steps of: dividing influence factors of cantilever casting bridge displacement into four types, respectively determining theoretical calculation values and actual measurement values of the four types of displacement, and recording the ratio of the actual measurement values to the theoretical calculation values as error deviation coefficients; a corrected grey theory is adopted to predict an error offset coefficient of subsequent construction; according to the actual measurement method for the elastic deformation of the hanging basket, the final displacement of the hanging basket is adopted, and the elastic deformation of the hanging basket can be obtained after the deformation of a bridge structure and the inclined displacement of the hanging basket caused by the deformation of the bridge structure are deducted; a corrected grey theory prediction method is provided, that is, a linear optimization algorithm is used for replacing a traditional least square method to determine calculation parameters of the grey theory, and the corrected grey theory is used for predicting the state of the bridge, so that the method has the advantages of being higher in accuracy and clearer in calculation.
本发明公开一种悬臂浇筑桥梁施工线形控制方法，即将悬臂浇筑桥梁位移的影响因素分为四类，分别确定这四类位移的理论计算值和实测值，将实测值和理论计算值的比值记为误差偏离系数，采用修正的灰色理论对后续施工的误差偏移系数进行预测；提供一种挂篮弹性变形的实测方法，即采用挂篮的最终位移，扣除桥梁结构的自身变形和桥梁结构变形造成的挂篮倾斜位移后，即可获得挂篮的弹性变形；提出一种修正的灰色理论预测方法，即用线性最优化的算法取代传统的最小二乘法来确定灰色理论的计算参数，采用修正的灰色理论预测桥梁的状态具有精确度更高，计算更清晰的特点。
Cantilever pouring bridge construction linear control method
悬臂浇筑桥梁施工线形控制方法
LI JUN (author) / REN XIN (author) / LI LE (author) / ZHANG HAIGE (author) / YU WANCHANG (author)
2023-06-09
Patent
Electronic Resource
Chinese
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