随着混凝土在工程中的广泛应用, 其裂缝问题也越来越受到人们的重视, 由于施工或其它外界因素造成的裂 缝, 不仅影响结构的美观, 而且由于裂缝造成抗渗性能的下降, 引起漏水, 还会影响结构的正常使用功能。以安阳县 双泉水库溢洪道混凝土衬砌为工程实例, 建立了基于ANSYS 的有限元模型, 通过施加不同的工况, 分析其温度场、 应力场的变化规律, 研究了混凝土衬砌裂缝产生的原因及裂缝产生的初始位置, 并且提出了对混凝土温度应力控制 的措施。

With the w ide application o f concrete in eng ineering , the cr ack pro blem has received mo re attention. Cr acks are usually caused by constr uctio n o r o ther ext ernal factor s, w hich no t o nly affect the aesthet ics of str uctur e, but also affect the str uctur e function because cracks can decrease t he permeability and then induce leaking . In this paper , the spillway concrete lining of Shuan2 gquan Reservoir in Anyang County was used as a case study. The finite element model was developed using ANSYS to analyze the varia2 tion rules of temperature and stress fields under different wo rking conditions, and to investigate the causes of cracks in the concrete lin2 ing and initial position of cracks. The measur es fo r temperature and stress contro l of concrete w ere pr oposed.