Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Active control method and system for bridge floor elevation in bowstring arch bridge suspender replacement construction
The invention relates to a suspender replacement construction technology, in particular to a bridge floor elevation active control method and system for suspender replacement construction of a tied-arch bridge. According to the method, based on establishment of an optimization equation of a cable force factor, a straining beam section temperature gradient and a control point elevation theoretical value, theoretical values of the cable force factor and the straining beam section temperature gradient under various working conditions are solved; constructing a Bayesian network model by taking the replacement suspender cable force deviation, the temporary suspender cable force deviation, the adjacent suspender cable force deviation and the straining beam section temperature gradient deviation as root nodes and the control point relative elevation deviation as leaf nodes; feedback information is converted into dimensionless deviation data in the suspender replacement process, reasoning of the Bayesian network is achieved, the liftable laser measuring instrument is adopted for measuring the elevation, synchronous lifting and descending of the bridge floor are achieved through the bridge floor pocket lifting device, high precision and high timeliness are achieved, and the method is suitable for large-scale popularization and application. And errors caused by a manual control method are avoided.
本发明涉及吊杆更换施工技术，特别涉及一种系杆拱桥吊杆更换施工桥面标高主动控制方法及系统。该方法基于建立索力因素、系梁截面温度梯度与控制点标高理论值的优化方程，进而求解各工况索力因素、系梁截面温度梯度的理论值；以更换吊杆索力偏差、临时吊杆索力偏差、相邻吊杆索力偏差以及系梁截面温度梯度偏差为根节点，控制点相对标高偏差为叶节点构建贝叶斯网络模型；吊杆更换过程中将反馈信息转化为无量纲的偏差数据，并实现贝叶斯网络的推理，本发明采用可升降的激光测量仪进行标高的测量，并通过桥面兜吊装置实现桥面的同步提升和下降，具有高精度和高时效性，避免了人为控制方法造成的误差。
Active control method and system for bridge floor elevation in bowstring arch bridge suspender replacement construction
The invention relates to a suspender replacement construction technology, in particular to a bridge floor elevation active control method and system for suspender replacement construction of a tied-arch bridge. According to the method, based on establishment of an optimization equation of a cable force factor, a straining beam section temperature gradient and a control point elevation theoretical value, theoretical values of the cable force factor and the straining beam section temperature gradient under various working conditions are solved; constructing a Bayesian network model by taking the replacement suspender cable force deviation, the temporary suspender cable force deviation, the adjacent suspender cable force deviation and the straining beam section temperature gradient deviation as root nodes and the control point relative elevation deviation as leaf nodes; feedback information is converted into dimensionless deviation data in the suspender replacement process, reasoning of the Bayesian network is achieved, the liftable laser measuring instrument is adopted for measuring the elevation, synchronous lifting and descending of the bridge floor are achieved through the bridge floor pocket lifting device, high precision and high timeliness are achieved, and the method is suitable for large-scale popularization and application. And errors caused by a manual control method are avoided.
本发明涉及吊杆更换施工技术，特别涉及一种系杆拱桥吊杆更换施工桥面标高主动控制方法及系统。该方法基于建立索力因素、系梁截面温度梯度与控制点标高理论值的优化方程，进而求解各工况索力因素、系梁截面温度梯度的理论值；以更换吊杆索力偏差、临时吊杆索力偏差、相邻吊杆索力偏差以及系梁截面温度梯度偏差为根节点，控制点相对标高偏差为叶节点构建贝叶斯网络模型；吊杆更换过程中将反馈信息转化为无量纲的偏差数据，并实现贝叶斯网络的推理，本发明采用可升降的激光测量仪进行标高的测量，并通过桥面兜吊装置实现桥面的同步提升和下降，具有高精度和高时效性，避免了人为控制方法造成的误差。
Active control method and system for bridge floor elevation in bowstring arch bridge suspender replacement construction
一种系杆拱桥吊杆更换施工桥面标高主动控制方法及系统
WANG HAO (Autor:in) / LIAO RUIXUAN (Autor:in) / XU ZIDONG (Autor:in) / MAO JIANXIAO (Autor:in)
15.12.2023
Patent
Elektronische Ressource
Chinesisch
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