详细介绍了关于水工非杆系结构的国内外研究现状 和主要的前期研究成果，对研究中存在的主要问题和难点进行了较为全面和系统的总结。对 进一步开展研究的重点、内容及其关键问题进行了深入地阐述，对研究方法和研究技术路线 提出了较为全面和详细的建议，对今后开展具体研究工作具有较强的理论指导意义，为开展 深入研究奠定了基础。

A detailed introduction to the research status and the main achievements at home and abroad on hydraulic non-bar structures has been made, a completed and systemic summarization on the existing problems and the difficulties in the research has been described, the main contents and the key areas for further research have been proposed, and a completed and detailed suggestion on the research method and technical approach has been established. The conclusion achieved will provide the research extension with more theoretic and constructive instruction, which can be considered as a basis for the further development of related research.