大型薄壁预应力U形槽原型充水试验分析  

Prototype water-filling test for large-scaled pre-stressed U-aqueduct

作　　者：冯光伟 贾少燕 赵廷华 水淼 张玉明 

机构地区：[1]河南省水利勘测设计研究有限公司,河南郑州450016

出　　处：《人民长江》2013年第16期36-38,共3页Yangtze River

基　　金："十一五"国家科技支撑计划重大项目"南水北调工程若干关键技术研究与应用之大流量预应力渡槽设计和施工技术研究"(2006BAB04A05);南水北调中线干线工程科技项目"大型预应力U型预制槽1:1原型试验和预应力张拉试验研究"(ZXJ/KY/YYL-001)

摘　　要：为了解大型预应力U形渡槽空间应力的分布状态与规律,对在建的南水北调中线沙河渡槽开展了原型结构充水试验研究。通过试验,监测各充水水位下槽体应力应变及结构变形,并与数模计算成果进行对比。分析表明,排除温度、混凝土徐变等非荷载因素影响后,各项目实测值与数模计算值吻合较好,表现出一致的规律性。同时,通过槽体充水试验,渡槽安全性得到验证,到达了设计预期的承载能力和抗裂能力。For mastering the stress distribution laws of large - scaled U - type pre - stressed aqueduct, prototype water - filling test was carried out for Shahe aqueduct of Middle Route Project of South - to - North Water Diversion. By the test, the stress and strain of the aqueduct under different water levels were monitored and compared with results of numerical simulation. After eliminating influences factors of temperature and creep, the measured data was well accordance with the numerical results and showed the same regularity. The test also verified that the aqueduct safety can be guaranteed with expected bearing capacity and crack - resistance.

关 键 词：原型试验 充水试验 渡槽 南水北调中线工程 

分 类 号：TV67[水利工程—水利水电工程]