隔河岩通航渡槽工程荷载测试及挠度变形分析  

Load test and deflection analysis for navigation aqueduct of Geheyan Hydropower Station

作　　者：张保军[1] 李亦明[1] 尤迎春 

机构地区：[1]长江科学院工程安全与病害防治研究所,湖北武汉430010 [2]湖北清江有限责任公司,湖北宜昌443002

出　　处：《人民长江》2012年第24期91-93,共3页Yangtze River

摘　　要：为了检验清江隔河岩水利枢纽通航渡槽是否达到设计要求,对其进行了充水荷载试验。试验采用5级蓄水荷载方式,并结合施工期安装的钢筋计、应变计等仪器进行相应测试。结果表明:随着渡槽每级加载水位的上升,渡槽跨中结构向下挠度亦增大,最大挠度值为22.2 mm;0号墩和筒体台最大下沉量为8.15 mm和6.52 mm,下沉量小于设计允许值20 mm;在荷载试验作用下建筑物受力均匀,建筑物处于弹性工作状态。Water-filling load test was conducted to verify the performance of a navigation aqueduct of Geheyan Hydropower Station on Qingjiang River.For examining the stress status,we adopt 5-level water-filling load,and the monitoring data acquisition was realized by steel bar meter and strain gauge embedded during previous construction period.The test results show that the deflection at mid-span of the aqueduct increase with the augmentation of the water level,reaching the highest deflection of 22.2 mm;the largest settlement of No.0 pile and the drum abutment are 8.15 mm and 6.52 mm respectively,which are smaller than the design allowable value by 20 mm.The structures operated in an elasticity state and uniform stress condition during the load test.

关 键 词：通航渡槽 荷载试验 挠度 变形 下沉量 隔河岩水电站 

分 类 号：TV672.3[水利工程—水利水电工程]