[1]杨翠萍,孟广清,石方建,等.徐州刘山北泵站大体积混凝土施工期温控防裂应用研究[J].江苏水利,2019,(07):49-53+57.
　YANG Cuiping,MENG Guanqing,SHI Fangjian,et al.Research and application on temperature control and crack prevention measures of mass concrete during construction period in Xuzhou Liushan North Pumping Station[J].JIANGSU WATER RESOURCES,2019,(07):49-53+57.
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徐州刘山北泵站大体积混凝土施工期温控防裂应用研究()
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《江苏水利》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2019年07期
页码:
49-53+57
栏目:
水利工程建设
出版日期:
2019-07-19

文章信息/Info

Title:
Research and application on temperature control and crack prevention measures of mass concrete during construction period in Xuzhou Liushan North Pumping Station
文章编号:
1007-7839(2019)07-0049-05
作者:
杨翠萍1;  孟广清1;  石方建1;  张智沛2;  孙巧荣2;  强 晟2
1.徐州市水务局, 江苏 徐州 221018; 2.河海大学水利水电学院, 江苏 南京 210098
Author(s):
YANG Cuiping1;  MENG Guanqing1;  SHI Fangjian1;  ZHANG Zhipei2;  SUN Qiaorong2;  QIANG Sheng2
1.Xuzhou Water Conservancy Bureau, Xuzhou 221018, Jiangsu; 2.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, Jiangsu
关键词:
泵站;  大体积混凝土;  温控防裂;  施工期;  应力
Keywords:
pumping station;  mass concrete;  temperature control and crack prevention;  construction period;  stress
分类号:
TV544
文献标志码:
B
摘要:
徐州刘山北泵站大体积混凝土由于泵站结构形式复杂等因素而导致施工期容易开裂,采用埋置式冷却水管模型的三维有限元计算程序,对该泵站的大体积混凝土结构在施工期的温度场和应力场进行仿真计算。结果表明,针对大体积混凝土内外温差和泵站本身结构的复杂性,忽视采用温控措施将导致多个区域混凝土表面产生超抗拉强度的拉应力。通过尝试多种温控和结构优化调整综合措施,最终能将施工期拉应力降至抗拉强度以下以避免开裂。工程最终防裂效果理想,所采取措施可为类似工程提供参考。
Abstract:
Due to the complicated structure of the pumping station, the mass concrete of Xuzhou Liushan North Pump Station is easy to crack during the construction period. The temperature field and the stress field of the mass concrete structure of the pumping station during the construction period were simulated through three-dimensional finite element calculation program using embedded cooling water pipe model. The results showed that in view of the difference between internal and external temperature in the mass concrete and the complexity of the pumping station, failure to use temperature control measures would result in tensile stresses exceeding the tensile strength of concrete in multiple surface areas. By using a variety of temperature control and structural optimization adjustment measures, the tensile stress during construction could be reduced below the tensile strength to avoid cracking. The project had an excellent anti-cracking effect and the measures could provide a reference for similar projects.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2019-04-29
作者简介:杨翠萍(1965—),女,本科,高级工程师,主要从事工程建设管理工作。
更新日期/Last Update: 2019-07-15