重力式锚碇底板超大仓面不均匀分层施工技术
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摘要
随着我国基础建设的快速发展,大体积混凝土在桥梁建设中被广泛应用。大体积混凝土温度应力分析、温度场控制、抗裂分析是施工过程中的重要研究课题。本文依托棋盘洲长江公路大桥锚碇底板工程,根据热传导理论结合有限单元法,建立了重力式锚碇底板仿真计算模型。通过系统参数分析提出了棋盘洲长江公路大桥重力式锚碇底板超大仓面不均匀分层施工技术方案。结合现场实测数据验证了本论文所提出的重力式锚碇底板超大仓面不均匀施工技术方案的有效性。
With the rapid development of the infrastructure in China,mass concrete has been widely used in bridge construction. Temperature stress analysis,temperature field control and crack resistance analysis of mass concrete are important research topics in the construction process. This paper relies on the anchorage floor of the Qipanzhou Changjiang Highway Bridge. Based on the theory of heat conduction and combined with the finite element method,the simulation model of the gravity anchorage floor is established. Through the analysis of the system parameters,the technicalscheme for the non-uniform layered construction of the oversized warehouse floor of the gravity anchorage floor of the Qipanzhou Changjiang Highway Bridge is proposed. Combining with the field measurement data,the effectiveness of the non-uniform construction technology scheme of the large-sized warehouse floor of the gravity anchorage floor which is proposed in this paper is verified.
With the rapid development of the infrastructure in China,mass concrete has been widely used in bridge construction. Temperature stress analysis,temperature field control and crack resistance analysis of mass concrete are important research topics in the construction process. This paper relies on the anchorage floor of the Qipanzhou Changjiang Highway Bridge. Based on the theory of heat conduction and combined with the finite element method,the simulation model of the gravity anchorage floor is established. Through the analysis of the system parameters,the technicalscheme for the non-uniform layered construction of the oversized warehouse floor of the gravity anchorage floor of the Qipanzhou Changjiang Highway Bridge is proposed. Combining with the field measurement data,the effectiveness of the non-uniform construction technology scheme of the large-sized warehouse floor of the gravity anchorage floor which is proposed in this paper is verified.
引文
[1]Husein Malkawi A I,Mutasher S A,Qiu T J.Thermal-structural modeling and temperature control of roller compacted concrete gravity dam[J].Journal of Performance of Constructed Facilities,2003,17(4):177-187.
[2]Kawaguehi T,Nakane S.Investigations on determining thermal stress in massive concrete structures[J].ACIMaterials Journal,1996,93(l):96-101.
[3]Kim J H J,Jeon S E,Kim J K.Development of new device for measuring thermal stresses[J].Cement and Concrete Research,2002,32:1645-1651.
[4]刘宁,刘光廷.大体积混凝土结构温度场的随机有限元算法[J].清华大学学报(自然科学版),1996,36(1):41-47.
[5]朱伯芳.不稳定温度场数值分析的分区异步长解法[J].水利学报,1995,(8):46-52.
[6]马保国,张平均,许婵娟,等.微矿粉在大体积混凝土中水化热及抗裂分析[J].武汉理工大学学报,2003,25(11):18-21.
[7]马保国,张平均,张莉,等.微矿粉在大体积混凝土中自催化效应的研究[J].混凝土,2003,(9):25-27.
[8]刘沐宇,徐黎明,汪峰,等.广州黄埔大桥承台大体积混凝土温度控制与监测分析[J].华中科技大学学报(城市科学版),2008,25(1):12-16.
[9]张湧,刘斌,贺拴海,等.桥梁大体积混凝土温度控制与防裂[J].长安大学学报(自然科学版),2006,26(3):43-46.
[10]王强,夏菲,刘太乾,等.大体积高强混凝土施工过程中温度场分析[J].沈阳工业大学学报,2014,36(4):453-458.
[11]谭广柱,刘书贤,张驰,等.大体积混凝土温度应力场变化分析[J].土木工程与管理学报,2013,30(1):20-24.
[12]孙维刚,倪富陶,刘来君,等.大体积混凝土水化热温度特征数值分析[J].江苏大学学报(自然科学版),2015,36(4):475-479.
[13]赵蒙屏,费文平,贾水欣.基于ANSYS二次开发的大体积混凝土温度徐变应力分析[J].武汉大学学报(工学版),2016,49(4):516-520.
[14]夏雄,吴炎,胡坤,等.大体积混凝土温度演变规律研究[J].混凝土,2017,(6):152-156.
[15]JGJ/T 178-2009,补偿收缩混凝土应用技术规程[S].
[16]JTS 202-1-2010,水运工程大体积混凝土温度裂缝控制技术规程[S].
[17]JTG/T F50-2011,公路桥涵施工技术规范[S].
[2]Kawaguehi T,Nakane S.Investigations on determining thermal stress in massive concrete structures[J].ACIMaterials Journal,1996,93(l):96-101.
[3]Kim J H J,Jeon S E,Kim J K.Development of new device for measuring thermal stresses[J].Cement and Concrete Research,2002,32:1645-1651.
[4]刘宁,刘光廷.大体积混凝土结构温度场的随机有限元算法[J].清华大学学报(自然科学版),1996,36(1):41-47.
[5]朱伯芳.不稳定温度场数值分析的分区异步长解法[J].水利学报,1995,(8):46-52.
[6]马保国,张平均,许婵娟,等.微矿粉在大体积混凝土中水化热及抗裂分析[J].武汉理工大学学报,2003,25(11):18-21.
[7]马保国,张平均,张莉,等.微矿粉在大体积混凝土中自催化效应的研究[J].混凝土,2003,(9):25-27.
[8]刘沐宇,徐黎明,汪峰,等.广州黄埔大桥承台大体积混凝土温度控制与监测分析[J].华中科技大学学报(城市科学版),2008,25(1):12-16.
[9]张湧,刘斌,贺拴海,等.桥梁大体积混凝土温度控制与防裂[J].长安大学学报(自然科学版),2006,26(3):43-46.
[10]王强,夏菲,刘太乾,等.大体积高强混凝土施工过程中温度场分析[J].沈阳工业大学学报,2014,36(4):453-458.
[11]谭广柱,刘书贤,张驰,等.大体积混凝土温度应力场变化分析[J].土木工程与管理学报,2013,30(1):20-24.
[12]孙维刚,倪富陶,刘来君,等.大体积混凝土水化热温度特征数值分析[J].江苏大学学报(自然科学版),2015,36(4):475-479.
[13]赵蒙屏,费文平,贾水欣.基于ANSYS二次开发的大体积混凝土温度徐变应力分析[J].武汉大学学报(工学版),2016,49(4):516-520.
[14]夏雄,吴炎,胡坤,等.大体积混凝土温度演变规律研究[J].混凝土,2017,(6):152-156.
[15]JGJ/T 178-2009,补偿收缩混凝土应用技术规程[S].
[16]JTS 202-1-2010,水运工程大体积混凝土温度裂缝控制技术规程[S].
[17]JTG/T F50-2011,公路桥涵施工技术规范[S].