空心结构参数对3d打印墙体承载力的影响。实验模型

G. Slavcheva, Артем Левченко, M. Shvedova, Davut Karakchi-Ogli, D. Babenko, P. Yurov
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引用次数: 1

摘要

我们提出了空心3d打印墙承载能力评估的实验研究和建模结果,打印的外壳执行承载功能。根据墙体结构中空洞面积和浇筑层的比例,对3d打印空心墙体的承载能力进行了实验评估。研究发现,在中心荷载情况下,具有承载浇铸层的3d打印墙体可以作为类似于传统砌体结构的承重墙,而无需用结构混凝土和钢筋填充空隙。我们确定了空心3d打印壁的强度降低值,每增加1%的空隙面积,强度降低约0.1 - 0.25 MPa。确定了空心结构参数的极限值,为保证自承重和非承重3d打印墙体的承载能力,其极限值不得超过K = 0.75。建立了空心结构参数与承载力关系的实验模型,可以预测3d打印墙体在中心荷载作用下的承载力。建议在按第一组极限状态计算中心受压下的3d打印墙体单元时,考虑空心结构参数K。
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THE EFFECT OF HOLLOW STRUCTURE PARAMETER ON THE 3D-PRINTED WALL BEARING CAPACITY. EXPERIMENTAL MODEL
We present the results of experimental studies and modelling of the evaluation of the bearing capacity of hollow 3D-printed walls with the printed shell performing bearing functions. The bearing capacity of hollow 3D-printed walls was experimentally assessed depending on the ratio of the void areas and casting layers in the wall structure. It was established that in case of central loading, a 3D-printed wall with bearing casting layers can serve as a bearing wall similar to traditional types of masonry construction without filling voids with structural concrete and reinforcement. We established the value of strength reduction of hollow 3D-printed walls, which amounted to ~0.1 – 0.25 MPa per 1 % of the increased area of voids. The limit value of the hollow structure parameter was determined, which must not exceed K = 0.75 in order to ensure the bearing capacity of self-bearing and non-bearing 3D-printed walls. We obtained an experimental model of the relationship between the hollow structure parameter and the bearing capacity, which allowed predicting the bearing capacity of a 3D-printed wall under central loading. It was suggested to take into account the hollow structure parameter K when calculating the elements of unreinforced 3D-printed walls under central compression according to the first group of limit states.
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来源期刊
CiteScore
0.80
自引率
0.00%
发文量
43
审稿时长
4 weeks
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