预应力锚索地梁支护参数优化  

Optimization of Prestressed Anchor Cable Ground Beam Support Parameters

作　　者：邹卫东 ZOU Weidong(China Railway 21st Bureau Group 6th Engineering Co.Ltd.,Tianjin 300392,China)

机构地区：[1]中铁二十一局集团第六工程有限公司,天津300392

出　　处：《铁道建筑技术》2025年第2期36-40,92,共6页Railway Construction Technology

基　　金：中铁二十一局集团有限公司科研开发项目(2021C-6)。

摘　　要：基于朔黄铁路线28#~34#坡,即K74+080上行~K125+262上行段高路堑护坡综合整治工程实例,对高陡路堑边坡进行基于安全系数的参数分析,研究其在不同锚固体锚杆长度、间距、布设角度、预应力数值下的边坡安全系数变化规律,提出33#、34#边坡加固工程优化设计方案。研究表明:实际边坡支护实施方案存在较大优化空间,可以在预应力锚索地梁不同的地梁尺寸、锚固长度、锚固体间距和布设角度等方面进行方案优化设计以避免工程材料冗余浪费,从而在满足稳定性需求的前提下尽可能降低工程造价。研究结果期望对同类工程的路堑边坡预应力锚索地梁支护设计提供有益参考。Based on the 28#~34#slope of the Shuozhou-Huanghua railway line:K74+080 uplink~K125+262 uplink section high cutting slope comprehensive improvement engineering example,the parameter analysis based on the safety factor was carried out for the high and steep cutting slope.The variation law of slope safety factor under different anchor rod lengths,spacing,deployment angles,and prestress values was studied,and optimization design schemes for slope reinforcement projects of 33#and 34#were proposed.The research shows that there is a large optimization space in the actual slope support implementation scheme,and the scheme can be optimized in terms of different ground beam sizes,anchor lengths,anchor distances,and laying angles of prestressed anchor cable ground beams to avoid redundant waste of engineering materials.Therefore,the lowest engineering cost can be obtained as much as possible under the premise of meeting the stability requirements.It is expected to provide a beneficial reference for the design of prestressed anchor cable ground beam support for cutting slopes of similar projects.

关 键 词：预应力锚索 地梁 支护 安全系数 参数优化 

分 类 号：U213.158[交通运输工程—道路与铁道工程]