Construction Process Control of Large Extra Caissons  

作　　者：胡少伟 王红霞 樊建生 

机构地区：[1]Department of Materials and Structural Engineering, Nanjing Hydraulic Research Institute, Nanjing 210024, China [2]School of Naval Architecture and Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200030, China [3]Department of Civil Engineering, Tsinghua University, Beijing 100084, China

出　　处：《Tsinghua Science and Technology》2005年第3期359-363,共5页清华大学学报（自然科学版（英文版）

摘　　要：The complexity of geotechnical engineering and variability in construction circumstances of large extra caissons make the problem of maintaining appropriate sink attitude quite difficult, especially in keeping sink uniformity and achieving the expected final sink depth. A new construction control method is presented using ∞H theory, considering uncertainties in the mechanics model and external noise in the construction site parameters. The design method of an ∞H controller has consequently been obtained for large extra caissons. Control results using only constructor experiences are compared with simulation results using the ∞ H controller for a practical engineering situation, which indicates that the ∞H controller is successful in maintaining sink uniformity, avoiding sink as well as in achieving the expected final sink depth.The complexity of geotechnical engineering and variability in construction circumstances of large extra caissons make the problem of maintaining appropriate sink attitude quite difficult, especially in keeping sink uniformity and achieving the expected final sink depth. A new construction control method is presented using ∞H theory, considering uncertainties in the mechanics model and external noise in the construction site parameters. The design method of an ∞H controller has consequently been obtained for large extra caissons. Control results using only constructor experiences are compared with simulation results using the ∞ H controller for a practical engineering situation, which indicates that the ∞H controller is successful in maintaining sink uniformity, avoiding sink as well as in achieving the expected final sink depth.

关 键 词：large extra caissons construction process attitude control ∞H control 

分 类 号：U445.557[建筑科学—桥梁与隧道工程]