分散型高压力下坡体承压风险监控方法研究

Simulation Research for Pressure Distribution Prediction of Building

研究分散型高压力下坡体承压风险监控方法具有重要意义。坡体的结构较为复杂,不同坡度的压力不同,为准确预测坡体建筑物表面压力分布,提出一种基于压力流体动能分析的高压坡体承压检测模型。通过对建筑坡体进行压力检测,运用有效的分类处理机制,去除外界干扰,建立压力优化检测模型,对分散型的建筑坡体进行承压检测。仿真结果表明,给定合适边界条件和计算方法,使用这种优化压力计算模型能够得到准确获取分散型坡体压力系数计算结果,可以为更加复杂的工程实际计算提供研究参考和应用依据。

Research for accurate calculation of surface pressure distribution for high-rise building is very important.Aim at practical application of computational wind engineering,in order to get suitable turbulence model and numeration method to calculate accurately the pressure distribution,surface pressure distribution of cubic-building is calculated with modified atmospheric boundary layer,different turbulence models and coarse mesh.Comparison and analysis with experiments,it is found that there is an error for the surface pressure distribution prediction of RANS and DES models,while LES result is better.The numerical result shows that LES could gain accurate data with coarse mesh and appropriate boundary condition,offering references and bases for complex project computation.