西华大学学报（自然科学版）2024，Vol.43Issue(2)：70-76,7.DOI:10.12198/j.issn.1673-159X.5312
泵送灌注钢管混凝土流态数值模拟
Numerical Simulation of Concrete Slurry Flow Through Bumping in Steel Tube
摘要
Abstract
The concrete filled steel tube(CFST)is increasingly widely used in bridge construction at home and abroad.The homogeneity control of concrete during the pouring is the key to ensure the good mechanical properties of CFST members.The distribution of various raw materials in the main concrete pipe directly affects the mechanical properties.In order to explore the distribution of the raw material in the tube during the pumping,the concrete slurry is equivalent to three phase material:air(phase 1),water(phase 2:liquid phase)and particle(phase 3:fake fluid).Through fluid mechanics software,the flow beha-vior and the volume distribution law of each phase were simulated when the tube was vertical layout and tilt layout.The pumping pressure with the height was also obtained.For the vertical layout,the second and the third phases of the concrete slurry shows the overall jacking at different speeds.As for the tilt layout,the second and the third phases rise along the ascending channel and sediment along the descending channel.The both arrangements will lead to the stratification near liquid level,and the sedimentation at the bottom.And the pumping pressure is proportional to the height.The above conclusions can provide a reference for the application of CFST in engineering.关键词
钢管混凝土/物料分布/流体数值模拟/流体力学Key words
concrete filled steel tube(CFST)/distribution of the raw material/numerical simulations of fluid/fluid mechanics分类
交通工程引用本文复制引用
唐克伦,周孝军,赵艺程..泵送灌注钢管混凝土流态数值模拟[J].西华大学学报（自然科学版）,2024,43(2):70-76,7.基金项目
国家自然科学基金资助项目(52008340) （52008340）
西华大学高端人才启动基金项目(Z201130). （Z201130）
