（1 同济大学建筑工程系， 上海 200092； 2 上海风畅土木工程技术有限公司， 上海 200092）

［摘要］插入式钢基础环是塔筒和基础之间常用的连接方式。由于钢基础环与混凝土基础之间变形往往不能协调一致，导致很多基础环在运行一段时间后出现了明显滑移，并在基础环T型板上方与混凝土之间产生较大空隙，甚至会出现混凝土开裂、压碎破坏的情况。针对这类问题，结合工程案例中基础环基础的特点和常见破坏形式，根据有关规范和文献，总结提出了有关基础环T型板上方混凝土局部受压承载力及抗冲切承载力、T型板上方基础环外侧混凝土抗压疲劳强度和悬挑板根部钢筋抗拉疲劳强度验算的工程算法；并通过工程案例对此工程算法进行了验证；可为同种类型基础环基础的设计提供参考。

［关键词］风力发电塔； 基础环基础； 基础设计； 工程算法

中图分类号：TU470+.3文献标识码：A文章编号：1002-848X(2019)10-0115-04

Research on engineering calculation algorithm for embedded-ring foundation of wind turbine tower

Chen Junling1, Bian Bo1, Feng Youquan2

(1 Department of Structural Engineering, Tongji University, Shanghai 200092, China;2 Shanghai Fengchang Civil Engineering Technology Co., Ltd., Shanghai 200092, China)

Abstract:Steel embedded-ring foundation is a common connection between tower tube and foundation. Because the deformation between steel embedded-ring foundation and concrete foundation is often inconsistent, many foundation rings slip obviously after a period of operation, and there are large voids between the top of T-shaped slab of embedded-ring and concrete, and even concrete cracking and crushing will occur. In view of these problems, combined with the characteristics and common failure modes of embedded-ring foundation in engineering cases, according to relevant codes and documents, the engineering calculation  algorithm was summarized and put forward for checking the local compressive and punching shear bearing capacity of concrete above embedded-ring T-shaped slab, the compressive fatigue strength of concrete outside embedded-ring above T-shaped slab and the tensile fatigue strength of steel bar at the root of cantilever slab. The engineering case validated the engineering calculation algorithm, which could provide reference for the design of the same type of embedded-ring foundation.

Keywords:wind turbine tower; embedded-ring foundation; foundation design; engineering calculation algorithm

作者简介：陈俊岭，博士，教授，博士生导师，一级注册结构工程师，Email: chenjl@tongji.edu.cn。