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• CN 62-1072/P
• ISSN 1000-0240
• 创刊于1979年
• 主管单位：中国科学院
• 主办单位：中国科学院寒区旱区
•                  环境与工程研究所
•                  中国地理学会

• 寒区科学与技术 •

改进的无网格法及其在冻土区桩基温度场中的应用

1. 1. 长安大学 建筑工程学院, 陕西 西安 710064,;
2. 中铁二院西北勘察设计有限责任公司, 甘肃 兰州 730000
• 收稿日期:2018-04-08 修回日期:2018-07-12 出版日期:2018-10-25 发布日期:2018-12-10
• 作者简介:高志华(1975-),女(汉),山西万荣人,副教授,2008年在中国科学院寒区旱区环境与工程研究所获博士学位,从事寒区工程数值计算及土力学研究.E-mail:zhgao@chd.edu.cn.
• 基金资助:
国家自然科学基金项目（51579013）资助

Analysis of temperature distribution along piles in permafrost regions by the improved element-free Galerkin method

GAO Zhihua1, ZHAO Zhao1, ZENG Huihui2, TIAN Wei1

1. 1. School of Civil Engineering, Chang'an University, Xi'an 710061, China;
2. CREEC(Northwest) Survey and Design Co. Ltd., Lanzhou 730000, China
• Received:2018-04-08 Revised:2018-07-12 Online:2018-10-25 Published:2018-12-10

Abstract: The element-free Galerkin method (EFG) has been improved by using the orthonormal basis functions to obtain a shape function. So, the improved element-free Galerkin method (IEFG) can obtain the solution of undetermined coefficients directly without the inverse matrices. An ill-conditional or singular matrices can be avoided by the method. Because of the advantages of the IEFG, it has greater computational efficiency and can obtain the solution for arbitrary node distribution. In this paper, the method was introduced to analyze the temperature distribution along piles in permafrost. The control equations of temperature field in permafrost regions were established. The effects of heat conduction and latent heat on the temperature distribution were considered and the release of concrete hydration heat was studied by control equation. It is concluded that the calculated results are in good agreement with the monitoring data and the results by the finite element method.

• P642.14