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High-voltage transmission tower-line system subjected to disaster loads

Progress in Natural Science:Materials International 2006年第9期16卷 899-911页

作者： LI Hongnan and BAI Haifeng ( State Key Laboratory of Coastal and Offshore Engineering, School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China China Railway No. 9 Group Co., Ltd., Shenyang 110013, China) State Key Laboratory of Coastal and Offshore Engineering School of Civil and Hydraqlic Engineering Dalian University of Technology Dalian 116024 China China Railway No.9 Group Co. Ltd. Shenyang 110013 China

The high-voltage power transmission system is an important lifeline structure. It is significant for wide researches on the features and ability of the system subjected to earthquake and environmental loads. The promising prosperity of the system has been demonstrated around the world. The corresponding advances of the system with respect to the mechanism of loading action, analytical methods, experimental research measurements, structural vibration control, fatigue damage, lifetime prediction, and design methods are comprehensively discussed herein. Finally, further research work on dynamic response characteristics of high-voltage transmission tower-line system in the near future is predicted.

关键词： high-voltage power transmission tower-line system loading effects dynamic analysis experimental researches design theories.

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Product model structure for generalized optimal design

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Progress in Natural Science:Materials International 2002年第4期 56-62页

作者： QIU Qingying , FENG Peien, WU Jianwei and PAN Shuangxia(State Key Laboratory of CAD&CG, Zhejiang University, Hangzhou 310027, China) State Key Laboratory of CAD&CG Zhejiang University Hangzhou 310027 China

The framework of the generalized optimization product model with the core of network- and tree-hierarchical structure is advanced to improve the characteristics of the generalized optimal design. Based on the proposed node-repetition technique, a network-hierarchical structure is united with the tree-hierarchical structure to facilitate the modeling of serialization and combination products. The criteria for product decomposition are investigated. Seven tree nodes are defined for the construction of a general product model, and their modeling properties are studied in detail. The developed product modeling system is applied and examined successfully in the modeling practice of the generalized optimal design for a hydraulic excavator.

关键词： product model optimization modeling generalized optimal design design theories.

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