[1]王丽,邓继,徐纯霞,等.大体积混凝土温控和预应力协同防裂措施[J].江苏水利,2022,(07):6-10,15.
 WANG Li,DENG Ji,XU Chunxia,et al.Synergistic anti-cracking measures of mass concrete by temperature control and prestress[J].JIANGSU WATER RESOURCES,2022,(07):6-10,15.
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大体积混凝土温控和预应力协同防裂措施()
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《江苏水利》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2022年07期
页码:
6-10,15
栏目:
水利工程建设
出版日期:
2022-08-03

文章信息/Info

Title:
Synergistic anti-cracking measures of mass concrete by temperature control and prestress
文章编号:
1007-7839(2022)07-0006-0005
作者:
王丽1邓继2徐纯霞2朱耀军3蒋梦源45张红石4
(1.淮安市水利勘测设计研究院有限公司,江苏 淮安 223005;2.涟水县水利勘测设计室,江苏 淮安 223499;3.涟水县水生态建设服务中心,江苏 淮安 223499;4.河海大学 水利水电学院,江苏 南京 210098;5.浙江省水文管理中心,浙江 杭州 310009)
Author(s):
WANG Li1 DENG Ji2 XU Chunxia2 ZHU Yaojun3 JIANG Mengyuan45 ZHANG Hongshi4
(1.Huai’an Water Conservancy Survey and Design Research Institute Co., Ltd., Huai’an 223005, China;2.Lianshui County Water Conservancy Survey and Design Office, Huai’an 223499, China;3.Lianshui County Water Ecological Construction Service Center, Huai’an 223499, China;4.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China;5.Zhejiang Hydrology Management Center, Hangzhou 310009, China)
关键词:
预应力温度应力混凝土防裂有限元计算水电站
Keywords:
prestress temperature stress anti-cracking of concrete finite element calculation hydropower station
分类号:
TV122+.1
文献标志码:
B
摘要:
朱码闸水电站的厂房结构复杂,混凝土体积较大,容易在施工期温度应力的作用下产生裂缝。通水冷却是降低混泥土温度应力的常用方法,而预应力技术是一种降低混凝土结构施工期内部拉应力的新方法。为研究温控和预应力对混凝土施工期拉应力的协同作用效果,运用有限单元法得到了不同预应力张拉荷载作用与不同通水冷却措施下,结构内部产生的拉应力降幅。通过对计算结果的分析,最终确定了各仓混凝土的最优防裂措施。
Abstract:
The powerhouse structure of Zhuma sluice Hydropower Station is complex, while the concrete volume is large, which is prone to cracks under the action of temperature stress during construction. Water cooling is a common method to reduce the temperature stress of concrete, and prestressing technology is a new method to reduce the internal tensile stress of concrete structures during construction. In order to study the synergistic effect of temperature control and prestress on tensile stress of concrete during construction, the finite element method was used to obtain the reduction of tensile stress inside the structure under different prestressed tensile loads and different water cooling measures. Through the analysis of the calculation results, the optimal anti-cracking measures for the concrete of each warehouse are finally determined.

参考文献/References:

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[1]陈 坚,于 宙,王 丽,等.软基上水闸截面积和地基对预应力效果的影响规律[J].江苏水利,2021,(01):25.
 CHEN Jian,YU Zhou,WANG Li,et al.Influence law of cross-sectional area of sluice and foundation on prestressed effect on soft foundation[J].JIANGSU WATER RESOURCES,2021,(07):25.
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备注/Memo

备注/Memo:
收稿日期:2022-03-20
作者简介:王丽(1981—),女,高级工程师,本科,主要从事大中型泵站工程规划设计以及BIM应用工作。E-mail:50442537@qq.com
更新日期/Last Update: 2022-07-15