| 哈牡线季节性冻土接触网基础处理措施探讨 |
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| 引用本文： | 伏松平. 哈牡线季节性冻土接触网基础处理措施探讨[J]. 铁道建筑技术, 2020, 0(4): 125-128 |
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| 作者姓名： | 伏松平 |
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| 作者单位： | 北京中铁建电气化设计研究院有限公司 |
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| 基金项目： | 中国铁建股份有限公司科技研发计划项目(11-50C)。 |
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| 摘 要： | 针对哈尔滨至牡丹江电气化改造工程季节性冻土分布的实际工程特点,结合季节性冻土条件下接触网基础的设计理念,对本项目选用的扩大型钢柱基础和不带扩底的拉线基础进行切向冻胀应力计算分析,并考虑影响切向冻胀力的水分、土质、负温以及基础侧表面的粗糙度等主要因素,提出了对钢柱基础采用换填加扩大型基础的处理措施,对接触网的下锚拉线基础提出了换填及加大埋深等防冻胀处理措施以抵抗季节性冻土的上拔力。
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| 关 键 词： | 季节性冻土 接触网 基础 处理措施 |
Discussion on Foundation Treatment Measures of Overhead Contact System of Harbin-Mudanjiang Electrification Line in Seasonal Frozen Soil Area |
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| FU Songping. Discussion on Foundation Treatment Measures of Overhead Contact System of Harbin-Mudanjiang Electrification Line in Seasonal Frozen Soil Area[J]. Railway Construction Technology, 2020, 0(4): 125-128 |
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| Authors: | FU Songping |
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| Affiliation: | (Beijing China Railway Constnuetion Elcrnfeation Design&Reearch Institute Co.Ld,Beijing 00043,China) |
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| Abstract: | According to the actual engineering conditions of Harbin-Mudanjiang eletrification project in seasonal frozen soil area,this paper first calculated and analyzed the tangential frost hearing stress for the foundation with the bottom expansion of the steel mast and the cable-guyed foundltion without the expansion botton in combination with the design concept of OCS foundation under seasonal frozen soil conditions.Secondly,considering the muin factors afetirg the tangential frost hearing force,such as rate of water content,soil condition,negative temperature and the rughness of the foundation side surface,the measures of replacing soil and foundlation with bottom expansion for the steel column,and the measures of replacing soil and increasing the buried depth for stay foundation without the expansion botton of additive conductor,were presented to resist the uplift force of seasonal fruzen soil. |
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| Keywords: | seasonal frozen soil Overhead Contact System(0OCS) foundation treatment measure |
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