中文摘要：

能量桩是一种由地源热泵技术与桩基埋管换热器结合组成的经济高效节能减排技术。简要介绍了基于地源热泵技术的能量桩技术原理、桩型、埋管形式以及技术经济优势，总结了近年来国内外能量桩技术的研究现状及其工程应用，包括基于灌注桩的传热管埋管形式和基于预制桩的传热管埋管形式；指出了目前工程应用中存在的一些主要问题，并提出一种新型PCC能量桩技术及其施工工艺；最后简要分析了能量桩技术在国家节能减排工程中的应用前景，并提出有待进一步研究的方向。

英文摘要：

The energy pile is the combination of ground source heat pump technology and purposely designed pile for storing energy in the ground using buried pipes during hot climates and retrieving energy from it when it is needed. The technical principles, pile types, buried forms and economic advantages of the energy pile are introduced. The heat transfer pipes can be buffed in drilled shaft, precast piles, steel piles and cement mixing piles. The current advances and research status of energy piles at home and abroad and their engineering applications （including drilled shafts and precast piles） in recent years are reviewed and summarized. Moreover, some major problems in engineering applications are revealed, leading to the development of a new PCC energy pile. The prospects of the PCC energy pile in the national energy saving projects of China are analyzed, and the further research orientation is proposed.