人字构架预应力装配式RC双柱基础受力性能数值分析  

Numerical analysis of mechanical performance of prestressed RC double-column foundation with herringbone frame

作　　者：肖波 段妹男 庞瑞[2] 刘洋航 XIAO Bo;DUAN Mei-nan;PANG Rui;LIU Yang-hang(State Grid Henan Economic Research Institute,Zhengzhou 450052,China;College of Civil Engineering and Architecture,Henan University of Technology,Zhengzhou 450001,China)

机构地区：[1]国网河南省电力公司经济技术研究院,河南郑州450052 [2]河南工业大学土木工程学院,河南郑州450001

出　　处：《河南城建学院学报》2024年第1期1-9,共9页Journal of Henan University of Urban Construction

基　　金：国家自然科学基金面上项目(51778214);国网河南省电力公司经济技术研究院项目(SGHAYJ00JS2200105)。

摘　　要：提出了一种变电站人字构架预应力装配式钢筋混凝土(RC)双柱基础(简称装配式基础)。这种装配式基础具有建造效率高、受力性能好、节能减排等优点。采用考虑材料非线性、基础与地基共同作用的数值分析方法,对实际荷载和全过程加载下的装配式基础进行了受力性能和破坏形态分析,并与同条件下的现浇基础对比分析。结果表明:装配式基础在实际荷载下的承载力和应力状态均满足规范要求;在全过程加载下,装配式基础具有良好的受力性能和协调变形能力,两类基础均有较大的安全储备;基于土重法和R.Ganesh理论,提出了装配式基础承载力的计算方法,其计算值与数值分析结果吻合良好。A substation herringbone frame prestressed fabricated reinforced concrete(RC)double column foundation(hereinafter referred to as fabricated foundation)is proposed.The fabricated foundation has the characteristics of high construction efficiency,good mechanical performance,energy saving and emission reduc-tion.In order to fully understand the mechanical properties of the prefabricated foundation,the mechanical properties and failure modes of the prefabricated foundation under actual load and full load were analyzed by using the numerical analysis method considering material nonlinearity and the interaction between basics and foundation,and compared with the cast-in-place foundation under the same conditions.The results reveal that the bearing capacity and stress state of the prefabricated foundation under the actual load meet the requirements of the code.Under the whole process loading,the prefabricated foundation has good mechanical performance and coordinated deformation ability,and both types of foundations have large safety reserves.Based on the soil weight method and R.Ganesh theory,a calculation method for the bearing capacity of the prefabricated foundation is proposed.The calculated values are in good agreement with the numerical analysis results.

关 键 词：变电站人字构架 装配式基础 预应力连接 数值分析 理论计算 

分 类 号：TU471.11[建筑科学—结构工程]