南水北调东线宝应泵站肘形流道温控技术研究
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摘要
宝应站枢纽工程位于江苏省宝应县境内,作为南水北调东线一期工程的水源工程,其主要作用是与江都泵站共同组成第一级抽江泵站,以满足南水北调规划确定的东线一期工程的要求,并可结合抽排里下河地区涝水。
水工泵站工程结构形式颇为复杂,在以往的工程建设过程中,泵站混凝土在施工期时有开裂的现象发生已是不争的事实,这已成为工程业主、设计和施工人员困惑和关注的工程问题。
为了今后能对同类泵站工程的建设提供更好的经验和安全保障,工程业主就本论文研究课题专门立项,对论文提出的问题进行重点研究,研究结论具有重要的学术价值和工程推广应用前景。
本论文采用以下研究方法和技术路线:
1、采用非稳定温度场和应力场仿真计算的有限单元法,对泵站混凝土温控防裂问题进行研究,对混凝土施工全过程温度场和应力场进行动态仿真分析。
2、密切配合工程建设管理者方及施工者,据有限单元法仿真计算分析结果,在工程的主要施工环节,及时量化地掌握混凝土结构各部位的受力状况和可能开裂特征,提供相关资讯。
3、从施工现场观测资料的反分析和对比分析中,验证和评述现有施工方案,并进行施工反馈分析,总结经验和选择防裂措施,确保混凝土结构不出现裂缝或基本不出现裂缝。
The key project of Baoying pump station, as a headwaters project of the project of South-to-North Water Diversion in east of China,is locate in Baoying country, Jiangsu province. The pump station is principally use to buildup a First grade pump station with pump station of Jiangdu to suffice the first-stage construction of the project of South-to-North Water Diversion in east of China, and pump drainage water logging from Lixia River zone.The structure style of hydraulic pump station is very complex. It is a unassailable truth that there is crack occur in concrete of those established pump stations during construction period. And the building owners, designers and constructors were puzzled for that for a long time.For supply better experience and insurance to posterior similar pump stations, the building owners approve and initiate this project and consign Hohai University to study it. This task should have very important theory value and utility value.We adopt study methods and technical lines as following:1. We adopt finite-element method to simulate the unsteady temperature field and stress field, to study temperature control and crack prevention of concrete of pump station, and to get result of dynamic simulate analysis to the temperature and stress field of concrete in whole construction process.2. Coorperate with the managers and constructors of the project, base on the result of simulate calculate and analyzes from finite-element method, predominate the quantized stress position and the specificity of possibledehiscence and supply coherent information to the managers and constructors. 3. Base on the back analysis and comparative analysis to field data, verifyand comment the exiting schemes, progress feedback analysis on construction, summarize experience and select measures of crack prevention to insure there is no or little crack in concrete structure.
水工泵站工程结构形式颇为复杂,在以往的工程建设过程中,泵站混凝土在施工期时有开裂的现象发生已是不争的事实,这已成为工程业主、设计和施工人员困惑和关注的工程问题。
为了今后能对同类泵站工程的建设提供更好的经验和安全保障,工程业主就本论文研究课题专门立项,对论文提出的问题进行重点研究,研究结论具有重要的学术价值和工程推广应用前景。
本论文采用以下研究方法和技术路线:
1、采用非稳定温度场和应力场仿真计算的有限单元法,对泵站混凝土温控防裂问题进行研究,对混凝土施工全过程温度场和应力场进行动态仿真分析。
2、密切配合工程建设管理者方及施工者,据有限单元法仿真计算分析结果,在工程的主要施工环节,及时量化地掌握混凝土结构各部位的受力状况和可能开裂特征,提供相关资讯。
3、从施工现场观测资料的反分析和对比分析中,验证和评述现有施工方案,并进行施工反馈分析,总结经验和选择防裂措施,确保混凝土结构不出现裂缝或基本不出现裂缝。
The key project of Baoying pump station, as a headwaters project of the project of South-to-North Water Diversion in east of China,is locate in Baoying country, Jiangsu province. The pump station is principally use to buildup a First grade pump station with pump station of Jiangdu to suffice the first-stage construction of the project of South-to-North Water Diversion in east of China, and pump drainage water logging from Lixia River zone.The structure style of hydraulic pump station is very complex. It is a unassailable truth that there is crack occur in concrete of those established pump stations during construction period. And the building owners, designers and constructors were puzzled for that for a long time.For supply better experience and insurance to posterior similar pump stations, the building owners approve and initiate this project and consign Hohai University to study it. This task should have very important theory value and utility value.We adopt study methods and technical lines as following:1. We adopt finite-element method to simulate the unsteady temperature field and stress field, to study temperature control and crack prevention of concrete of pump station, and to get result of dynamic simulate analysis to the temperature and stress field of concrete in whole construction process.2. Coorperate with the managers and constructors of the project, base on the result of simulate calculate and analyzes from finite-element method, predominate the quantized stress position and the specificity of possibledehiscence and supply coherent information to the managers and constructors. 3. Base on the back analysis and comparative analysis to field data, verifyand comment the exiting schemes, progress feedback analysis on construction, summarize experience and select measures of crack prevention to insure there is no or little crack in concrete structure.
引文
[1] 朱伯芳.大体积混凝土温度应力与温度控制[M].中国电力出版社,1999,3.
[2] 朱伯芳.不稳定温度场时间区域异步长解法[J].水利学报.1995.8
[3] 朱伯芳.有限单元法原理与应用(第二版)[M].中国水利电力出版社,1998
[4] 龚召熊,张锡祥,肖汉江,汪安华.水工混凝土的温控与防裂[M].中国水利水电出版社,1999,5.
[5] 王淑云,方宝榕等.数值分析方法[M]河海大学出版社,1996
[6] 张超然,王忠诚,戴会超,等.三峡水利枢纽混凝土工程温度控制研究[M].中国水利水电出版社,2001,1.
[7] 邓进标,邹志晖,韩伯鲤等.水工混凝土建筑物裂缝分析及其处理[M].武汉水利电力大学出版社,1998.
[8] 黄国兴,惠荣炎.混凝土的收缩[M].中国铁道出版社,1990.
[9] 周明,陈振建.遗传算法原理及应用[M].国防工业出版社,2000.
[10] 张晓缋,戴冠中,徐乃平.一种新的优化搜索算法——遗传算法[J].控制理论与应用,1995.6.
[11] 朱岳明,刘勇军,谢先坤,等.确定混凝土温度特性参数的试验与反演分析[J].岩土工程学报,2002,2.
[12] 朱岳明,张建斌.碾压混凝土坝高温期连续施工采用冷却水管进行温控的研究[J].水利学报,2002,11.
[13] 朱岳明,徐之青,张琳琳.掺氧化镁混凝土筑坝技术的述评[J].红水河,2002,3.
[14] 张建斌,朱岳明.碾压混凝土坝三维温度场仿真分析的浮动网格法[J].水力发电,2002,7.
[15] 朱岳明,秦宾,张建斌.基于生长单元网格浮动的碾压混凝土坝温度场分析[J].河海大学学报,2002,5.
[16] 朱岳明,刘勇军,黎军,张建斌.碾压混凝土拱坝整体三维温度场应力场仿真计算分析[J].河海大学学报(增刊),2002,5.
[17] 朱岳明,黎军,刘勇军.石梁河新建泄洪水闸闸墩裂缝成因分析[J].红水河,2002,2.
[18] 朱岳明,贺金仁,刘勇军.龙滩高碾压混凝土重力坝夏季不同浇筑温度的温控 防裂研究[J].水力发电,2002.11.
[19] 曹为民,谢先坤,朱岳明.过渡单元和层合单元在混凝土三维温度场仿真计算中的应用[J].水利水电技术,2002,4.
[20] 刘勇军,朱岳明,等.温度问题现场反分析及施工反馈模式[J].河海大学学报(2004).
[21] 朱岳明,贺金仁.龙滩高碾压混凝土重力坝仓面长间歇和寒潮冷击温控防裂分析[J].水力发电(2003).
[22] 朱岳明,刘勇军,谢先坤,等.石梁河新建泄洪闸施工期闸墩裂缝成因分析与加固措施研究[R].河海大学,1999,10.
[23] 朱岳明,徐之青,贺金仁,等.洪口水电站碾压混凝土重力坝温控防裂研究[R].河海大学高坝及地下结构工程研究所,2002,12.
[24] 朱岳明,贺金仁.混凝土温升试验与热力学特性参数反演分析[J].水利学报(2003).
[25] 朱岳明,徐之青,贺金仁,等.混凝土水管冷却温度场求解的一种正确算法[J].长江科学院院报(2003).
[26] 朱岳明,贺金仁,张建斌.混凝土水管冷却试验与计算及应用[J].河海大学学报(2003).
[27] 朱岳明,刘勇军,黎军,张建斌.碾压混凝土拱坝整体三维温度场应力场仿真计算分析[J].河海大学学报,2002年5期(’2001南京全国拱坝新技术研讨会论文增刊).
[28] 张建斌.碾压混凝土坝三维温度场有限元仿真分析的层合单元模型的浮动网格法[D].河海大学硕士学位论文,2000.3.
[29] 谢先坤.大体积混凝土结构三维温度场、应力场有限元仿真计算及裂缝成因机理分析[D].河海大学硕士学位论文,2001.3.
[30] 黎军.水工结构施工期混凝土温度场反分析及其应用[D].河海大学硕士学位论文,2002.3.
[31] 刘勇军.水工混凝土温度与防裂技术研究[D].河海大学博士学位论文(朱岳明指导),2002,12.
[32] 贺金仁.高碾压混凝土重力坝的温控防裂研究[D].河海大学硕士学位论 文,2003.3.
[33] 徐之青.水工混凝土温控防裂的理论与应用研究[D].河海大学硕士学位论文,2003.3.
[34] 陈建余.非稳定饱和-非饱和渗流场数值计算关键技术及其应用研究[D].河海大学博士学位论文(朱岳明指导),2003.10.
[35] 曹为民.水工立交地涵工程混凝土施工期温控防裂研究[D].河海大学硕士学位论文,2003.4.
[36] 马东亮.二河新泄洪闸工程混凝土温控防裂研究[D].河海大学硕士学位论文,2003.4.
[37] 林志祥.混凝土大坝温度应力数值仿真分析关键技术研究[D].南京:河海大学博士学位论文(朱岳明指导),2005.
[38] S. Sakurui&K.Takeuchi, Back analysis of measured displacement of tunnels, Rock mech.. and Rock Eng., Vol. 16, No. 3, 1988, 173180
[39] D. M. Himmelblau, Applied nonlinear programming, McGraw-Hill Book Company, 1972
[40] A. K. Gupta, A finite elenment for transition from a fine to a coarse grid, Internation Journal for numerical methods in Engineering, Vol. 1235-15, 1978
[41] Rapheal JM Prediction of temperatue in rivers and reservoirs Journal of Power Div. ASCE,PO2,1962
[42] G. Gioda, Some remarks on back analysis and characterization probiems ingeomechanics, proc. 5th Int. conf on Numer. Methods in eomech, Nagoya, 1985, 4.
[43] Oriob jT, Selna LG temperature prediction in deep reservoirs J. of Hydraulics Div ASCE, HY2, 1970
[44] M. Hisatake & T. Ito, Back analysis for tunnel by optimization method, Proc. 5th Int. conf. on Numer. methods in Geomech., Nagoya, 1985. 4, 1301～1307
[45] Hsu TC. Microcracking of plain concrete and the shape of the stress-strain curve Joual ACI, 1963. NO. 2
[46] Jonasson, J. -E. and moisture fixation and moisture transter in concrete, in 8th International Conference on Structure Mechanics in Reactor Technology, Brussels, Belgium August 19～23, 1985.
[47] Kaplan MF. Crack propagation andfracture of concrete. Journal ACI, 1963, No. 2
[48] Kaplan MF. Stains and stresses of concrete at initiation of cracking, near faiture J. ACI, 1963, V. 60. No.2
[49] Jonasson, J. -E. and Ronin, V., Energetically Modified Cement, in proceedings of the International symposium Utilization of High-strength concrete 1993, 20-24 june Lillehammer, Norway.
[50] Bazant Z P and Cedolin L. Blunt crack band propagation in finite element analysis. J. Eng. Mech.. Div. ASCE, V. EM2, 297～315, 1979
[51] Wang, C., and Dilger, W. H., Predietion of concrete strength development during construction, paper presented at 1994 Annual Confrence of the Candian Society for civil Engineering, 1994.
[52] Clark RR. Cool concrete at Detroit dam Eng. News Rec. 21, Dec. 28
[53] ACI Committee 209, Prediction of creep, shrinkage and temperature effects in concrete structures, No. 2 draft, Am. Conr. int. Detroit, 1978
[2] 朱伯芳.不稳定温度场时间区域异步长解法[J].水利学报.1995.8
[3] 朱伯芳.有限单元法原理与应用(第二版)[M].中国水利电力出版社,1998
[4] 龚召熊,张锡祥,肖汉江,汪安华.水工混凝土的温控与防裂[M].中国水利水电出版社,1999,5.
[5] 王淑云,方宝榕等.数值分析方法[M]河海大学出版社,1996
[6] 张超然,王忠诚,戴会超,等.三峡水利枢纽混凝土工程温度控制研究[M].中国水利水电出版社,2001,1.
[7] 邓进标,邹志晖,韩伯鲤等.水工混凝土建筑物裂缝分析及其处理[M].武汉水利电力大学出版社,1998.
[8] 黄国兴,惠荣炎.混凝土的收缩[M].中国铁道出版社,1990.
[9] 周明,陈振建.遗传算法原理及应用[M].国防工业出版社,2000.
[10] 张晓缋,戴冠中,徐乃平.一种新的优化搜索算法——遗传算法[J].控制理论与应用,1995.6.
[11] 朱岳明,刘勇军,谢先坤,等.确定混凝土温度特性参数的试验与反演分析[J].岩土工程学报,2002,2.
[12] 朱岳明,张建斌.碾压混凝土坝高温期连续施工采用冷却水管进行温控的研究[J].水利学报,2002,11.
[13] 朱岳明,徐之青,张琳琳.掺氧化镁混凝土筑坝技术的述评[J].红水河,2002,3.
[14] 张建斌,朱岳明.碾压混凝土坝三维温度场仿真分析的浮动网格法[J].水力发电,2002,7.
[15] 朱岳明,秦宾,张建斌.基于生长单元网格浮动的碾压混凝土坝温度场分析[J].河海大学学报,2002,5.
[16] 朱岳明,刘勇军,黎军,张建斌.碾压混凝土拱坝整体三维温度场应力场仿真计算分析[J].河海大学学报(增刊),2002,5.
[17] 朱岳明,黎军,刘勇军.石梁河新建泄洪水闸闸墩裂缝成因分析[J].红水河,2002,2.
[18] 朱岳明,贺金仁,刘勇军.龙滩高碾压混凝土重力坝夏季不同浇筑温度的温控 防裂研究[J].水力发电,2002.11.
[19] 曹为民,谢先坤,朱岳明.过渡单元和层合单元在混凝土三维温度场仿真计算中的应用[J].水利水电技术,2002,4.
[20] 刘勇军,朱岳明,等.温度问题现场反分析及施工反馈模式[J].河海大学学报(2004).
[21] 朱岳明,贺金仁.龙滩高碾压混凝土重力坝仓面长间歇和寒潮冷击温控防裂分析[J].水力发电(2003).
[22] 朱岳明,刘勇军,谢先坤,等.石梁河新建泄洪闸施工期闸墩裂缝成因分析与加固措施研究[R].河海大学,1999,10.
[23] 朱岳明,徐之青,贺金仁,等.洪口水电站碾压混凝土重力坝温控防裂研究[R].河海大学高坝及地下结构工程研究所,2002,12.
[24] 朱岳明,贺金仁.混凝土温升试验与热力学特性参数反演分析[J].水利学报(2003).
[25] 朱岳明,徐之青,贺金仁,等.混凝土水管冷却温度场求解的一种正确算法[J].长江科学院院报(2003).
[26] 朱岳明,贺金仁,张建斌.混凝土水管冷却试验与计算及应用[J].河海大学学报(2003).
[27] 朱岳明,刘勇军,黎军,张建斌.碾压混凝土拱坝整体三维温度场应力场仿真计算分析[J].河海大学学报,2002年5期(’2001南京全国拱坝新技术研讨会论文增刊).
[28] 张建斌.碾压混凝土坝三维温度场有限元仿真分析的层合单元模型的浮动网格法[D].河海大学硕士学位论文,2000.3.
[29] 谢先坤.大体积混凝土结构三维温度场、应力场有限元仿真计算及裂缝成因机理分析[D].河海大学硕士学位论文,2001.3.
[30] 黎军.水工结构施工期混凝土温度场反分析及其应用[D].河海大学硕士学位论文,2002.3.
[31] 刘勇军.水工混凝土温度与防裂技术研究[D].河海大学博士学位论文(朱岳明指导),2002,12.
[32] 贺金仁.高碾压混凝土重力坝的温控防裂研究[D].河海大学硕士学位论 文,2003.3.
[33] 徐之青.水工混凝土温控防裂的理论与应用研究[D].河海大学硕士学位论文,2003.3.
[34] 陈建余.非稳定饱和-非饱和渗流场数值计算关键技术及其应用研究[D].河海大学博士学位论文(朱岳明指导),2003.10.
[35] 曹为民.水工立交地涵工程混凝土施工期温控防裂研究[D].河海大学硕士学位论文,2003.4.
[36] 马东亮.二河新泄洪闸工程混凝土温控防裂研究[D].河海大学硕士学位论文,2003.4.
[37] 林志祥.混凝土大坝温度应力数值仿真分析关键技术研究[D].南京:河海大学博士学位论文(朱岳明指导),2005.
[38] S. Sakurui&K.Takeuchi, Back analysis of measured displacement of tunnels, Rock mech.. and Rock Eng., Vol. 16, No. 3, 1988, 173180
[39] D. M. Himmelblau, Applied nonlinear programming, McGraw-Hill Book Company, 1972
[40] A. K. Gupta, A finite elenment for transition from a fine to a coarse grid, Internation Journal for numerical methods in Engineering, Vol. 1235-15, 1978
[41] Rapheal JM Prediction of temperatue in rivers and reservoirs Journal of Power Div. ASCE,PO2,1962
[42] G. Gioda, Some remarks on back analysis and characterization probiems ingeomechanics, proc. 5th Int. conf on Numer. Methods in eomech, Nagoya, 1985, 4.
[43] Oriob jT, Selna LG temperature prediction in deep reservoirs J. of Hydraulics Div ASCE, HY2, 1970
[44] M. Hisatake & T. Ito, Back analysis for tunnel by optimization method, Proc. 5th Int. conf. on Numer. methods in Geomech., Nagoya, 1985. 4, 1301～1307
[45] Hsu TC. Microcracking of plain concrete and the shape of the stress-strain curve Joual ACI, 1963. NO. 2
[46] Jonasson, J. -E. and moisture fixation and moisture transter in concrete, in 8th International Conference on Structure Mechanics in Reactor Technology, Brussels, Belgium August 19～23, 1985.
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