淘金河大型预应力拉杆拱渡槽结构变形及稳定性研究  

Study on stability and deformation of Taojinhe Large-sized Pre-stressed Tie-arch Aqueduct

作　　者：徐海清 吴佐莲[2] 闫运雷 苗怀军 王克忠[3] 

机构地区：[1]山东省水利工程总公司,山东兖州272100 [2]山东农业大学,山东泰安271000 [3]清华大学水沙科学与水利水电工程国家重点实验室,北京100084

出　　处：《水利水电技术》2008年第2期29-31,共3页Water Resources and Hydropower Engineering

摘　　要：淘金河渡槽是南水北调东线工程胶东地区调水工程中的一项大型关键性输水工程,渡槽采用了一种新型的渡槽结构形式——上承式预应力混凝土拉杆拱结构。其结构特性是:(1)肋拱和预应力混凝土拉杆组合形成自平衡受力体系,对槽墩不产生水平推力;(2)整体结构紧凑,支撑高度比下承式拉杆拱渡槽低;(3)不产生一般拱式渡槽的连拱效应,节省加强墩;(4)槽墩轻巧、施工方便、安全可靠,工程造价低。通过对上承式预应力拉杆拱渡槽支承结构稳定性的研究,得出了有益的结论。A new type of structure system for aqueduct, i.e. pre-stressed deck tie-arch structure is applied to the design of Tao- jinhe aqueduct, which is a key structure in the Jiaodong Area Water Transfer Project of the Eastern Route of North-to-South Water Transfer Project. The charaeteristics of the structure are： （1）self-balanced system created through the combination with both the arch-web and pre-stressed tie-beam and no horizontal force on support piers; （2）compact integral structure with the supporting height lower than that of the through tie-arch aqueduct; （3）no continuous arch effect, and then no strengthening pier; （4）light structure for piers and convenient for construction, reliable and safe with lower construction cost. Stability of the top supported pre-stressed tied arch has been studied and some significative are obtained in the paper.

关 键 词：预应力 渡槽 拉杆拱 位移 淘金河渡槽 南水北调东线工程 

分 类 号：TV672.3[水利工程—水利水电工程] TU378[建筑科学—结构工程]