应用于强冻胀土的光伏支架基础方案分析  

ANALYSIS OF PV SUPPORT FOUNDATION SCHEME APPLIED TO STRONG FROST HEAVING SOIL

作　　者：于满满 杜佼蕾 Yu Manman;Du Jiaolei(Longyuan(Beijing)Solar Energy Technology Co.,Ltd.,Beijing 100034,China)

机构地区：[1]龙源(北京)太阳能技术有限公司,北京100034

出　　处：《太阳能》2021年第10期52-58,共7页Solar Energy

摘　　要：本文以冻胀性评价为强冻胀、冻胀等级为Ⅳ级、标准冻结深度为2.20 m的地基土为研究对象,根据相关规范和标准,分别对在此种强冻胀土情况下光伏支架基础方案采用钢筋混凝土条形基础、预应力高强混凝土管桩基础、钻孔灌注桩基础、“预应力高强混凝土管桩基础+冻土层换填法”、“钻孔灌注桩基础+冻土层换填法”时光伏支架基础的承载力和稳定性进行了计算和分析。结合工程经济性分析后发现,“预应力高强混凝土管桩基础+冻土层换填法(或涂刷隔离剂)”方案或“钻孔灌注桩基础+冻土层换填法(或涂刷隔离剂)”方案可较好的应用于实际工程。In this paper,the foundation soil with frost heaving evaluation as strong frost heaving,frost heaving gradeⅣand standard freezing depth of 2.20 m is taken as the research object.Under this strong frost heaving soil condition,according to relevant specifications and standards,the bearing capacity and stability of several different PV support foundation schemes such as reinforced concrete strip foundation,prestressed high strength concrete pipe pile foundation,bored pile foundation,“prestressed high strength concrete pipe pile foundation+permafrost replacement method”and“bored pile foundation+permafrost replacement method”are calculated and analyzed respectively.Combined with the economic analysis of the project,it is showed that the scheme of“prestressed high strength concrete pipe pile foundation+permafrost replacement method(or brushing isolating agent)”or the scheme of“bored pile foundation+permafrost replacement method(or brushing isolating agent)”can be better applied to practical projects.

关 键 词：强冻胀土 光伏支架基础 预应力高强混凝土管桩 钻孔灌注桩 冻土层换填 钢筋混凝土条形基础 隔离剂 

分 类 号：TU923[建筑科学—建筑设计及理论]