模拟混凝土跳仓浇筑的高拱坝温度应力仿真分析

作者：张宇鑫 黄达海 宋玉普

单位：大连理工大学海岸与近海工程国家重点实验室 清华大学高坝大型复杂结构国家专业实验室 大连理工大学海岸与近海工程国家重点实验室 辽宁大连116024  北京100084  辽宁大连116024

关键词：高拱坝  跳仓浇筑  温度应力  仿真分析

分类号：TV642.4

出版年,卷(期):页码：2002,26(4):34-39

摘要：

解决了大坝施工过程仿真分析中由混凝土跳仓引起的新老数据传递、带宽恶化等问题 ;对差分步长过大引起的水化热损失进行了补偿 ,在提高了求解精度的同时 ,使求解速度得到成倍提高 ;编制了能模拟跑仓浇筑的高拱坝温度及应力三维有限元仿真分析通用软件。以实际工程为依托 ,对采用跳仓浇筑高拱坝施工全过程温度及应力的特点及变化规律进行了研究 ,成果可以供设计单位参考

This paper solved some problems of dam simulation analysis in the construction such as transformation between new and old data, bandwidth deterioration caused by sequence construction methods; by compensating the lost heat of hydration caused by large difference step size, this paper not only advanced results precision, also improved solution velocity greatly Three dimensional finite element simulation analysis program was compiled, which can be used to simulate temperature and stresses of high arch dam constructed with sequence methods Based on the practical project, the characteristics of temperature and stresses in the high arch dam construction with sequence methods was studied, the research results of this paper are valuable for designers

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参考文献：

[1]　朱伯芳.大体积混凝土温度应力与温度控制[M].北京:中国电力出版社,1998. [2]　朱伯芳.混凝土结构徐变应力分析的隐式解法[J].水利学报,1987,(9). [3]　BeyerW H.CRC StandardMathematicalTables[M].1985. [4]　H.S.Carslaw.Conduction ofHeat inSolids[M].NewYork:OxfordUniversityPress,1986. [5]　王树和等.高拱坝全过程温度应力仿真研究[J].水利水电技术,2000,(7). [6]　朱伯芳.不稳定温度场数值分析的时间域分区异步长解法[J].水利学报,1995,(8)

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