南方某高流速区江边取水泵站结构设计与探讨
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摘要
南方某江边取水泵站位于水库下游约1 km,洪水期受水库泄洪影响,泵站部位局部水流流速达5 m/s。高流速冲刷使泵站底部卵石层地基层面不稳定,泵站受水流冲击并可能会产生振动。通过采取"半嵌入型"平面布置方式、钻孔灌注桩与高压旋喷桩结合的地基处理方式、端部半圆形泵站体型等措施,成功解决了各个难点问题。工程经受住了洪水考验,取得了良好的施工和运行效果,可为类似工程设计提供借鉴。
A riverside water pumping station is located at the downstream of the reservoir about 1 km. The flood discharge from reservoir could cause local flow velocity of pumping station up to 5 m/s.High flow velocity scour made the pebbles at the bottom unstable,and vibration occurred to the pumping station since it was impacted by the water flow. By adopting a "semi embedded"layout pattern,in combination of bored pile and high pressure jet pile foundation treatment and shape measure of end semicircle,the difficult problems were successfully solved. The pumping station had withstood the test of the flood,and achieved good construction and operation results,which could provide experience for similar project design.
A riverside water pumping station is located at the downstream of the reservoir about 1 km. The flood discharge from reservoir could cause local flow velocity of pumping station up to 5 m/s.High flow velocity scour made the pebbles at the bottom unstable,and vibration occurred to the pumping station since it was impacted by the water flow. By adopting a "semi embedded"layout pattern,in combination of bored pile and high pressure jet pile foundation treatment and shape measure of end semicircle,the difficult problems were successfully solved. The pumping station had withstood the test of the flood,and achieved good construction and operation results,which could provide experience for similar project design.
引文
[1]GB 50069—2002,给水排水工程构筑物结构设计规范[S].北京:中国建筑工业出版社,2003.GB 50069-2002,Structural Design Code for Special Structures of Water Supply and Waste Water Engineering[S].Beijing:China Architecture&Building Press,2003(in Chinese).
[2]JGJ 94—2008,建筑桩基技术规范[S].北京:中国建筑工业出版社,2008.JGJ 94-2008,Technical Code for Building Pile Foundations[S].Beijing:China Architecture&Building Press,2008(in Chinese).
[3]GB 50007—2011,建筑地基基础设计规范[S].北京:中国建筑工业出版社,2012.GB 50007-2011,Code for Design of Building Foundation[S].Beijing:China Architecture&Building Press,2012(in Chinese).
[4]SL 303—2004,水利水电工程施工组织设计规范[S].北京:中国水利水电出版社,2004.SL 303-2004,Specifications for Construction Planning of Water Resources and Hydropower Engineering[S].Beijing:China Water&Power Press,2004(in Chinese).
[5]GB 50141—2008,给水排水构筑物工程施工及验收规范[S].北京:中国建筑工业出版社,2009.GB 50141-2008,Code for Construction and Acceptance of Water and Sewerage Structures[S].Beijing:China Architecture&Building Press,2009(in Chinese).
[2]JGJ 94—2008,建筑桩基技术规范[S].北京:中国建筑工业出版社,2008.JGJ 94-2008,Technical Code for Building Pile Foundations[S].Beijing:China Architecture&Building Press,2008(in Chinese).
[3]GB 50007—2011,建筑地基基础设计规范[S].北京:中国建筑工业出版社,2012.GB 50007-2011,Code for Design of Building Foundation[S].Beijing:China Architecture&Building Press,2012(in Chinese).
[4]SL 303—2004,水利水电工程施工组织设计规范[S].北京:中国水利水电出版社,2004.SL 303-2004,Specifications for Construction Planning of Water Resources and Hydropower Engineering[S].Beijing:China Water&Power Press,2004(in Chinese).
[5]GB 50141—2008,给水排水构筑物工程施工及验收规范[S].北京:中国建筑工业出版社,2009.GB 50141-2008,Code for Construction and Acceptance of Water and Sewerage Structures[S].Beijing:China Architecture&Building Press,2009(in Chinese).