摘要
通过对泵送大坝混凝土弹性模量与抗压强度试验结果的关系拟合,推导建立了弹性模量与成熟度间的函数关系,并通过考虑成熟度影响描述温度场与应力场耦合,使仿真计算结果更贴近实际,解决了程序计算中混凝土弹性模量不受温度因素影响的缺陷。对比分析成熟度对混凝土开裂风险的影响,对混凝土早期开裂预警并采取措施有重要意义。
In the actual design of concrete structures,compressive strength is most obtainable and the most intuitive. By fitting the relationship between elastic modulus and compressive strength of the dam pumping concrete, a function of the relationship between the maturity and elastic modulus of concrete is set up. By considering the impact of maturity to describe the temperature field and stress field in the coupling,the simulation results are closer to the actual situation. Defect of noelastic modulas change of concrete from the effects of temperature in program calculation is resolved. Warning for cracking of early age concrete has a greater significance.
出处
《水电能源科学》
北大核心
2009年第4期114-116,228,共4页
Water Resources and Power
基金
国家自然科学基金资助重点项目(505390105053902050579080)
关键词
混凝土
成熟度
弹性模量
抗压强度
仿真计算
裂缝
concrete
maturity
elastic modulus
compressive strength
simulation
crack
