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鉴于岩锚梁早期温度裂缝的产生和发展对温度应力分布影响很大,基于三维非线性有限元数值计算理论,借助ANSYS通用有限元软件,以某地下厂房岩锚梁为例,模拟了岩锚梁浇筑完成后早期温度场及温度应力场的变化规律,并分别采用Solid45单元和Solid65单元对混凝土单元进行了温度应力分析,通过分析两种方案,推断出裂缝产生部位及温度裂缝的形成对岩锚梁早期应力分布的影响。分析结果为设计施工提出合理温控措施、控制和减少温度裂缝产生提供了有效依据。
Based on the three-dimensional nonlinear finite element numerical calculation theory and ANSYS general finite element software, taking a rock-anchor beam of underground powerhouse as an example, the rock anchor The temperature field and the temperature stress field in the early stage after the pouring of beam were analyzed. The temperature stress of the concrete unit was analyzed by using Solid45 and Solid65 units respectively. By analyzing the two schemes, the formation of cracks and temperature cracks were deduced. Influence of early stress distribution of anchor beam. The analysis results provide an effective basis for putting forward reasonable temperature control measures for design and construction, controlling and reducing temperature cracks.