巴塘水电站边坡锚索预应力损失原因分析  

Analysis on the Causes of Prestressed Loss of Slope Anchor Cables in Batang Toru Hydropower Project

作　　者：肖仕进 马继峰 范正春 XIAO Shijin;MA Jifeng;FAN Zhengchun(Sinohydro Bureau 10 Co.,LTD.,Chengdu Sichuan 610036)

机构地区：[1]中国水利水电第十工程局有限公司,四川成都610036

出　　处：《四川水力发电》2024年第3期44-46,61,共4页Sichuan Hydropower

摘　　要：预应力锚索是由锚头、高强钢丝或高强钢绞线和锚固件组成、通过对高强钢丝或钢绞线施加预应力对被锚固体提供主动支护抗力的锚固结构[1]。印度尼西亚巴塘水电站的开挖边坡高达200多m,为了保证边坡稳定,对边坡进行了预应力锚索支护,但该工程的锚索预应力整体表现为衰减损失。对锚索预应力损失产生的原因进行了研究,阐述了对引起锚索预应力损失的各种因素进行的相关分析,结合其他监测成果找出了引起预应力衰减的主要原因,其结果已得到相互验证。Prestressed anchor cables are anchoring structures composed of anchor heads,high-strength steel wires or high-strength steel strands and anchors.By applying prestress to high-strength steel wires or steel strands,active support and resistance are provided to the anchored body.The excavation slope of Batang Toru Hydropower Project in Indonesia is more than 200 meters high.In order to ensure the stability of the slope,prestressed anchor cables were used to support the slope.The overall performance of the anchor cable prestress in this project was attenuation loss.In order to study the reasons for the anchor cable prestress loss,this article analyzes the various factors causing the anchor cable prestress loss,and combines other monitoring results to obtain the factors causing the prestress attenuation.For the main reason,the results have been mutually verified.

关 键 词：巴塘水电站 锚索预应力 损失 原因 监测 

分 类 号：TV7[水利工程—水利水电工程] TV52TV223.3