深圳大学学报理工版

装配式预制构件优化设计是建筑产品节能、环保、全生命周期价值最大化的基础. 为使装配式轻质隔墙板在满足力学性能、保温隔热性能和预制简单等条件下获得最优结构,对新型装配式轻质隔墙板进行了数值分析及优化设计. 基于标准化隔墙板,将圆形孔洞调整为椭圆形孔洞,通过数值分析比较了两种隔墙板(圆形截面和椭圆形截面)的受力性能和保温隔热性能. 考虑施工和使用过程可能出现的荷载模式,对隔墙板的整体刚度和薄弱点的应力集中效应进行了分析.通过设定热参数,比较了两种隔墙板在密闭空间内的降温时间. 结果表明,采用椭圆形孔洞隔墙板不仅自身质量减少5.6%,孔洞应力集中效应也有一定程度减小,其保温性能比圆形孔洞隔墙板提升了12%.

The optimum design of the prefabricated components is the foundation of energy saving, environmental protection and maximum life cycle value of building products. In this paper, the numerical analysis and optimum design of a new type of lightweight partition board are carried out to meet the requirements of mechanical properties, thermal transferring and simple prefabrication. Based on the standard partition board and numerical analysis, the circular cross section type partition board is modified to the elliptical cross section type. The numerical analysis is carried out to compare two types of partition plates(circular section and elliptical cross section)with respect to the mechanical performance and heat transfer performance. Among them, load modes which may occur in construction and service stage, are used to study the mechanical properties, effect of stress concentration and overall partition board stiffness. The heat transfer performance analysis is also done to compare the cooling time for the two kinds of partition boards in the confined space. The numerical analysis results show that the elliptical partition board not only reduces its weight by 5.6%, but also reduces the stress concentration effect of the hole to a certain extent. The thermal transferring performance of the elliptical partition board is 12% higher than that of the circular partition plate.

引言
1 数值试验设计
2 结果与分析
3 结论

图1 隔墙板截面(单位:mm)<br/>Fig.1 Cross-section of partition board(unit: mm)

图1 隔墙板截面(单位:mm)
Fig.1 Cross-section of partition board(unit: mm)

表1 隔墙板参数<br/>Table 1 Parameters of partition board

表1 隔墙板参数
Table 1 Parameters of partition board

图2 两种隔墙板网格模型<br/>Fig.2 Mesh model of two types of partition board

图2 两种隔墙板网格模型
Fig.2 Mesh model of two types of partition board

图3 荷载模型(单位:mm)<br/>Fig.3 Testing model(unit:mm)

图3 荷载模型(单位:mm)
Fig.3 Testing model(unit:mm)

图4 单侧对流换热模型网格<br/>Fig.4 Mesh model of unilateral convection

图4 单侧对流换热模型网格
Fig.4 Mesh model of unilateral convection

表2 隔墙板刚度值<br/>Table 2 Model stiffness values

表2 隔墙板刚度值
Table 2 Model stiffness values

图5 隔墙板受压应力集中效应<br/>Fig.5 Stress concentration effects of partition boards

图5 隔墙板受压应力集中效应
Fig.5 Stress concentration effects of partition boards

图6 隔墙板侧面加载应力云图<br/>Fig.6 Stress contour of partition board under side loading

图6 隔墙板侧面加载应力云图
Fig.6 Stress contour of partition board under side loading

图7 隔墙板受弯拉应力<br/>Fig.7 Bending stress of partition board

图7 隔墙板受弯拉应力
Fig.7 Bending stress of partition board

图8 隔墙板降温比较<br/>Fig.8 Cooling time of two types of partition boards

图8 隔墙板降温比较
Fig.8 Cooling time of two types of partition boards

表3 从25 ℃降温至20 ℃的时间<br/>Table 3 Time of cooling down from 25 ℃ to 20 ℃

表3 从25 ℃降温至20 ℃的时间
Table 3 Time of cooling down from 25 ℃ to 20 ℃

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备注

引言

1 数值试验设计

2 结果与分析

3 结论

期刊信息

备注

引言

1 数值试验设计

2 结果与分析

3 结 论

期刊信息

3 结论