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INSPECTION AND REINFORCEMENT OF WIND TURBINE FOUNDATIONS WITH STRATIFICATION
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摘要: 某工程7座风机基础在浇筑过程中,施工缝处理不当,基础存在分层。通过钻芯、地质雷达探测等方法对混凝土密实度进行了检测;并考虑风机基础结构和荷载的特殊性,分析分层面对基础承载能力的影响;综合检测和分析结果评价了各基础的安全性;对于安全性不满足要求的基础,提出压力注浆和在分层面增设抗剪键的加固方案,取得良好加固效果,现基础已安全运行2年;此外,对风机基础分层问题的防治提出了可行建议。Abstract: Construction joints of seven turbine foundations were not treated appropriately during pouring.In the detection and appraisal,density of concrete was detected through core-drilling and redar-detection;bearing capacity analysis and safety evaluation were performed with consideration of the specialty of wind turbine foundations;feasible treatment suggestions like pressure-grouting and adding shear connectors were also proposed,which had achieved good effect.Which supplied a reference for prevention and treatment of stratification of wind turbine foundations.
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Key words:
- wind turbine foundation /
- stratification /
- density of concrete /
- bearing capacity /
- safety evaluation
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CECS 03:200700钻芯法检测混凝土强度技术规程[S]. [2] 魏超,肖国强,王法刚.地质雷达在混凝土质量检测中的应用研究[J].工程地球物理学报,2004,1(5):447-451. [3] 易桂香,席向东.风机基础施工缝的安全性分析[C]∥第20届全国结构工程学术会议论文集.北京:工程力学杂志社,2011. [4] FD 0032007风电机组地基基础设计规定[S]. [5] 徐至钧.高塔基础设计与计算(修订版)[M].北京:中国石化出版社,2002. [6] GB 500112010建筑抗震设计规范[S]. [7] GB 501442008工业建筑可靠性鉴定标准[S]. [8] 王赫.建筑工程事故处理手册[M].2版.北京:中国建筑工业出版社,1998. [9] 胡彦辉,岳清瑞,张耀凯.高强灌浆料在结构加固修补技术中的应用[J].工业建筑,1999,29(6):58-59. [10] GB 505502010建筑结构加固工程施工质量验收规范[S]. [11] 伞志丰.风电场风机基础施工技术[J].施工技术,2011(1):18-20. [12] 舒华.风电工程风机基础大体积混凝土施工与质量控制[J].甘肃水利水电技术,2010,46(7):62-64. -
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