季节性冻土地区接触网支柱基础的选型与抗冻拔设计  

Type Selection and Frost Uplift Resistance Design of OCS Mast Foundation in Seasonally Frozen Soil Area

作　　者：汪小锋 WANG Xiaofeng

机构地区：[1]中铁二院成都勘察设计研究院有限责任公司

出　　处：《电气化铁道》2022年第2期26-29,共4页Electric Railway

摘　　要：季节性冻土地区如何防止接触网支柱基础发生冻拔破坏,一直是困扰铁路行业的难题。本文对季节性冻土地区接触网支柱基础选型进行详细分析,得出桩基础为季节性冻土地区接触网支柱基础的首选形式,提出了接触网支柱桩基础抗冻拔的具体措施,并结合工程实例对采用此类措施后桩基础抗冻拔的稳定性进行了分析验证。To prevent the OCS mast foundation from freezing and uplift in seasonally frozen soil area has been becoming a difficult problem perplexing the practitioners in the field of railway industry for a long time. The paper analyzes in details the selection of types of OCS mast foundations in seasonally frozen soil area, obtains that the pile foundation is preferred for the OCS mast foundation in the seasonally frozen soil area, puts forward the specific measures for frost uplift resistance of OCS mast pile foundation, analyzes and verifies the stability of frost uplift resistance of pile foundation after adopting of such measures, combining with the actual engineering examples.

关 键 词：季节性冻土 接触网支柱 桩基础 抗冻拔 切向冻胀力 

分 类 号：U225.42[交通运输工程—道路与铁道工程]