红花二线船闸下闸首温控仿真分析

针对大型船闸易由温度控制不当产生温度裂缝从而破坏整体结构的问题,采用温度应力仿真的方法对其进行研究。综合考虑混凝土性能、边界条件、浇筑方案等诸多对船闸温度应力造成影响的因素,结合ANSYS自带的APDL语言进行二次开发,编写热力学参数命令流对红花二线船闸下闸首不同工况全过程瞬态温度场和应力场进行仿真分析。结果表明,采取降低浇筑温度并适当配合通水措施能有效控制其温度应力。总结出的大体积混凝温度应力计算和控制的流程,可成熟运用于实际工程。

Simulation and analysis of temperature of lower gate head of Honghua second ship lock

Aiming at the problem that the large ship lock is easy to generate temperature cracks due to improper temperature control and destroy the overall structure,we apply the method of temperature stress simulation to research the problem.Taking comprehensive factors such as the influence of concrete performance,boundary conditions into account,combined with the APDL language of ANSYS for secondary development,we write the thermodynamic parameter command flow to analyze the transient temperature field and stress fields of the lower gate of the Honghua second ship lock.The results show that the temperature can be effectively controlled by reducing the pouring temperature and the water passing measures.The process framework for calculating and controlling the large volume coagulation temperature stress is summarized,which can be used in actual engineering.