季节性冻土区光伏支架基础冻胀防治措施研究综述  

REVIEW ON PREVENTION AND CONTROL MEASURES OF FROST HEAVE OF PHOTOVOLTAIC SUPPORT FOUNDATION IN SEASONAL FREEZING AREA

作　　者：姜伟 晏华斌[2] 张钰 刘英杰 付世博 李栋 刘功良[3] JIANG Wei;YAN Huabin;ZHANG Yu;LIU Yingjie;FU Shibo;LI Dong;LIU Gongliang(Department of Civil Engineering,Northeast Petroleum University,Heilongjiang Daqing 163318,China;Qinghai Yellow River Photovoltaic System Design Consulting Co.,Ltd.,Xi’an 710000,China;College of Engineering and Water Conservancy,Heilongjiang Bayi Agricultural University,Heilongjiang Daqing 163319,China)

机构地区：[1]东北石油大学土木建筑工程学院,黑龙江大庆163318 [2]青海黄河光伏系统设计咨询有限公司,西安710000 [3]黑龙江八一农垦大学,黑龙江大庆163319

出　　处：《低温建筑技术》2022年第7期144-148,共5页Low Temperature Architecture Technology

基　　金：大庆市新能源领域“揭榜挂帅”科技攻关项目(HGS-KJ/KJGLB-[2021]No30);国家住房与城乡建设部项目(2020-K-162,2020-K-184);黑龙江省自然科学基金项目(LH2021E022)。

摘　　要：为了研究季节性冻土可能引起光伏支架基础因冻胀融沉产生较大位移,导致光伏板波浪式变形,影响光伏发电效率的问题,文中通过对季节性冻区光伏支架基础的冻胀危害和冻胀防治措施进行综述,基于有限元模型分析冻土力学和基础冻胀原理,探讨光伏基础经济性和适用性等因素。结果汇总了地基土的改良、桩基础的埋深、柔性材料隔离及新型斜面基础4类冻胀防治措施,经过分析与评价得出保温法、涂敷法、套管法及钢管螺旋桩抗冻胀融沉效果好,为季节性冻土区地面光伏系统支架基础工程施工及基础的冻胀防治提供新方法和参考。Seasonal frozen soil may cause large displacement of photovoltaic(PV)support foundation.Frost heaving and thaw settlement lead to wave deformation of PV panels and affecting the efficiency of PV power generation.This study summarized the frost heaving hazards and prevention measures of PV support foundation in seasonal frozen re⁃gions,including improvement of foundation soil,buried depth of pile foundation,isolation of flexible materials,and new slope foundation.The mechanics of frozen soil and the principle of foundation frost heaving based on the finite element models were analyzed,and the economic and applicability of PV foundations were discussed.It was conclud⁃ed that the isolation method,coating method,casing method,and steel pipe screw pile had good frost heaving and thaw settlement resistance effects,which provided the reference for the construction,the prevention,and control of foundation frost heaving of PV support foundations in seasonal frozen regions.

关 键 词：光伏支架基础 抗冻胀措施 季节性冻区 有限元模型 

分 类 号：TU471.7[建筑科学—结构工程]