长江三峡永久船闸高边坡预应力锚索监测  

Monitoring of prestressing anchors in high slope for Three Gorges Projects permanent shiplock

作　　者：袁培进[1] 吴铭江[1] 陆遐龄[1] 张昌仁 

机构地区：[1]中国水利水电科学研究院,北京100044 [2]中国水利水电第十四工程局,云南昆明650041

出　　处：《岩土力学》2003年第S1期198-201,共2页Rock and Soil Mechanics

摘　　要：简要介绍了三峡工程永久船闸二期高边坡350 t级预应力锚索监测工程情况。监测结果表明,测力计张拉实测荷载与千斤顶加荷相差率为2.51 %,锁定损失率为2.46 %,锁定后损失率为11.81 %,总损失率为14.45 %。其荷载变化特征可总体归纳为下降稳定性、周期变化性和折线突降性三种类型,群锚效应观测无明显反应。在测力计的标定和安装过程中显示,基座钢垫板的尺寸、刚度及表面加工平整度对测力计的受力状态影响较大。The result of monitoring of prestressing anchors on the slope of TGPs permanent shiplock displays that the load fluctuation have three specific characters, steadily downward trend, cyclical vibration and sudden reduction. During the calibration and erection of dynamometer, the size characteristics, stiffness and surface roughness of base plate play influence on the stress-state of dynamometer.

关 键 词：永久船闸 预应力锚索 测力计 荷载损失率 荷载变化 群锚效应 

分 类 号：U641[交通运输工程—船舶及航道工程]