堆载对边坡预应力锚索张力的影响研究  

Influence of Piled Load on the Tension of Slope Prestress Anchor Cable

作　　者：赖道平[1] 何明杰[1] 王瑞贵[1] 李军[1] 

机构地区：[1]中国水电顾问集团华东勘测设计研究院,浙江杭州310014

出　　处：《水力发电》2010年第10期18-21,共4页Water Power

基　　金：浙江省新世纪151人才工程(2009)

摘　　要：预应力锚索广泛应用于高边坡、地下洞室等岩土工程领域。目前预应力锚索张力锁定值的确定主要凭借设计人员的经验,取值相差悬殊。以锦屏二级水电站工程1 560 m高程储料平台边坡为例,采用FLAC数值分析程序模拟料仓加载对预应力锚索张力的影响,以确定锚索后期的附加张力。用边坡多点位移计和锚索测力计的观测数据验证,计算成果准确地反映了边坡和锚索的运行状态。本研究方法可为边坡预应力锚索吨位计算和锁定张力设计提供合理可靠的依据。In the current design stage, the tension of prestress anchor cable was mainly determined by designer＇s experience, and the value selected by different designer was much different. The FLAC numerical analysis program was applied to study the influence of piled load on the tension of prestress anchor cable and determine the extra tension on the anchor cable for the storage platform slope of Jinping Ⅱ Hydropower Station with an altitude of 1560 m. The simulation is consistent with the monitoring data of multiple point extensometer and anchor cable dynamometer. The numerical analysis can provide reasonable and reliable basis for the determination of tonnage and tension of slope prestress anchor cable in design phase.

关 键 词：锚索 预应力 边坡 附加张力 锦屏二级水电站 

分 类 号：TV222[水利工程—水工结构工程] TV271