新型木塑保温墙板力学性能分析与试验研究
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摘要
木塑保温墙板的研制充分利用了塑料、木粉等废料,工艺简单、绿色环保、造价低廉,对满足建筑市场墙体材料的大量需求有重要的意义。目前已对木塑墙板的配方、规格、生产工艺有了初步了解,但作为新型的墙体材料应用到实际工程中还有很多工作要做。
本文以试验为基础,利用有限元软件ANSYS对木塑保温墙板的力学性能进行了分析,试验数据验证了有限元分析的正确性,有限元分析弥补了试验的局限性,最后得出了较全面的结论,为木塑保温墙板的推广应用提供了有益的理论依据。
本文的主要研究内容有:
(1)依据规范的要求对木塑保温墙板的材料力学性能进行试验研究。对所得的试验数据进行分析,得到木塑材料的抗压强度、抗弯强度和它们的荷载.位移曲线,分析结果表明木塑材料的强度和变形能力均能满足实际工程的要求。
(2)依据规范的要求对木塑保温墙板的力学性能进行试验研究。对所得的试验数据进行分析,得到横向荷载和轴向荷载作用下的承载力和冲击荷载作用下的冲击能量,分析横向荷载和轴向荷载作用下的荷载-位移曲线、应力-应变曲线,研究冲击荷载作用下的抗冲击性能,分析结果表明木塑保温墙板具有优异的力学性能,是其他墙体材料无法比拟的。
(3)利用有限元软件ANSYS对木塑保温墙板的力学性能进行分析。对比试验结果,进一步分析在横向荷载作用下构件尺寸及材料属性变化对承载力的影响,分析结果表明构件尺寸和材料属性的变化会对墙板的承载力产生较大影响。
(4)以木塑保温墙板的体积最小为目标,利用复形法和ANSYS中的优化模块分别对木塑保温墙板的尺寸进行优化。对比两种方法的优化结果,得到木塑保温墙板尺寸的最优值,此结果满足设计要求,节约了材料,降低了造价。
(5)利用有限元软件ANSYS对钢框架木塑保温墙体体系进行分析。模拟一个带木塑保温墙的单跨两层钢框架,对此钢框架的强度、刚度、荷载-位移曲线、刚度退化曲线、延性进行分析,并与纯钢框架进行对比,分析结果表明木塑保温墙板与钢框架之间有良好的协同工作能力。
The research of the wood-plastic thermal insulation wall has been made by waste materials including plastics and wood flowers and a series advantages including uncomplicated manufacture process, environmental protection and low cost. It satisfies the increasing wall material requirements in building market. Few preliminary techniques of mix design, specification and the manufacture processing are understandable at present. However there is still much work to do when it is put into practice.
Based on the experimental results, this paper has completed the analyses for the mechanical properties of the wood-plastic thermal insulation wall by means of finite element program ANSYS. The experimental data verifies the accuracy of the finite element model, and the finite element simulation may in turn make up the insufficiency of the experimental data. Finally, this paper obtains more comprehensive conclusions and provides useful theoretical reference for the popularization and application of the wood-plastic thermal insulation wall.
The main researches of this thesis are as follows:
(1) According to the Code, the mechanical properties of the wood-plastic thermal insulation wall material are investigated by tests. By experimental data analyzing, the compression strength, the bending strength and the load-displacement curves of the wood-plastic material are obtained. The results show that the strength and deformation ability satisfy the engineering requirements.
(2) According to the Code, the mechanical properties of the wood-plastic thermal insulation wall are investigated by tests. By experimental data analyzing, the load carrying capacity under lateral load, the load carrying capacity under axial load and impact energy under impact load are obtained; the load-displacement curves and the stress-strain curves under lateral load, the load-displacement curves and the stress-strain curves under axial load and the resist impact resistance properties are analyzed. The results show that the wood-plastic thermal insulation wall has better mechanical properties than other comparable wall materials.
(3) The analyses for the mechanical properties of the wood-plastic thermal insulation wall are completed by means of the finite element software ANSYS. Compared with the test results, the paper has additionally analyzed the influences by dimensional change and material property change on the load carrying capacity under lateral load. The results indicate that the dimensional change and material property change significantly affects load carrying capacity of plate.
(4) In order to reduce the volume of the wood-plastic thermal insulation wall, this paper adopts both the complex method and the finite element optimal module in ANSYS programs respectively to optimize the dimensions design. The results of both methods are compared and the optimum design result is given which satisfies the design requirements. The materials and cost are reduced by using the optimal methods.
(5) The analyses for the wood-plastic thermal insulation infilled wall steel frame system are carried on by means of the finite element software ANSYS. The paper simulates a one-span two-storey steel frame with the infilled wall. In comparison with the pure steel frame, the strength, rigidity, load-displacement curve, stiffness degeneration curve and ductility of the steel frame with the infilled wall are analyzed. The results show that the coordinated working performance between the wood-plastic thermal insulation infilled wall and the steel frame is excellent.
本文以试验为基础,利用有限元软件ANSYS对木塑保温墙板的力学性能进行了分析,试验数据验证了有限元分析的正确性,有限元分析弥补了试验的局限性,最后得出了较全面的结论,为木塑保温墙板的推广应用提供了有益的理论依据。
本文的主要研究内容有:
(1)依据规范的要求对木塑保温墙板的材料力学性能进行试验研究。对所得的试验数据进行分析,得到木塑材料的抗压强度、抗弯强度和它们的荷载.位移曲线,分析结果表明木塑材料的强度和变形能力均能满足实际工程的要求。
(2)依据规范的要求对木塑保温墙板的力学性能进行试验研究。对所得的试验数据进行分析,得到横向荷载和轴向荷载作用下的承载力和冲击荷载作用下的冲击能量,分析横向荷载和轴向荷载作用下的荷载-位移曲线、应力-应变曲线,研究冲击荷载作用下的抗冲击性能,分析结果表明木塑保温墙板具有优异的力学性能,是其他墙体材料无法比拟的。
(3)利用有限元软件ANSYS对木塑保温墙板的力学性能进行分析。对比试验结果,进一步分析在横向荷载作用下构件尺寸及材料属性变化对承载力的影响,分析结果表明构件尺寸和材料属性的变化会对墙板的承载力产生较大影响。
(4)以木塑保温墙板的体积最小为目标,利用复形法和ANSYS中的优化模块分别对木塑保温墙板的尺寸进行优化。对比两种方法的优化结果,得到木塑保温墙板尺寸的最优值,此结果满足设计要求,节约了材料,降低了造价。
(5)利用有限元软件ANSYS对钢框架木塑保温墙体体系进行分析。模拟一个带木塑保温墙的单跨两层钢框架,对此钢框架的强度、刚度、荷载-位移曲线、刚度退化曲线、延性进行分析,并与纯钢框架进行对比,分析结果表明木塑保温墙板与钢框架之间有良好的协同工作能力。
The research of the wood-plastic thermal insulation wall has been made by waste materials including plastics and wood flowers and a series advantages including uncomplicated manufacture process, environmental protection and low cost. It satisfies the increasing wall material requirements in building market. Few preliminary techniques of mix design, specification and the manufacture processing are understandable at present. However there is still much work to do when it is put into practice.
Based on the experimental results, this paper has completed the analyses for the mechanical properties of the wood-plastic thermal insulation wall by means of finite element program ANSYS. The experimental data verifies the accuracy of the finite element model, and the finite element simulation may in turn make up the insufficiency of the experimental data. Finally, this paper obtains more comprehensive conclusions and provides useful theoretical reference for the popularization and application of the wood-plastic thermal insulation wall.
The main researches of this thesis are as follows:
(1) According to the Code, the mechanical properties of the wood-plastic thermal insulation wall material are investigated by tests. By experimental data analyzing, the compression strength, the bending strength and the load-displacement curves of the wood-plastic material are obtained. The results show that the strength and deformation ability satisfy the engineering requirements.
(2) According to the Code, the mechanical properties of the wood-plastic thermal insulation wall are investigated by tests. By experimental data analyzing, the load carrying capacity under lateral load, the load carrying capacity under axial load and impact energy under impact load are obtained; the load-displacement curves and the stress-strain curves under lateral load, the load-displacement curves and the stress-strain curves under axial load and the resist impact resistance properties are analyzed. The results show that the wood-plastic thermal insulation wall has better mechanical properties than other comparable wall materials.
(3) The analyses for the mechanical properties of the wood-plastic thermal insulation wall are completed by means of the finite element software ANSYS. Compared with the test results, the paper has additionally analyzed the influences by dimensional change and material property change on the load carrying capacity under lateral load. The results indicate that the dimensional change and material property change significantly affects load carrying capacity of plate.
(4) In order to reduce the volume of the wood-plastic thermal insulation wall, this paper adopts both the complex method and the finite element optimal module in ANSYS programs respectively to optimize the dimensions design. The results of both methods are compared and the optimum design result is given which satisfies the design requirements. The materials and cost are reduced by using the optimal methods.
(5) The analyses for the wood-plastic thermal insulation infilled wall steel frame system are carried on by means of the finite element software ANSYS. The paper simulates a one-span two-storey steel frame with the infilled wall. In comparison with the pure steel frame, the strength, rigidity, load-displacement curve, stiffness degeneration curve and ductility of the steel frame with the infilled wall are analyzed. The results show that the coordinated working performance between the wood-plastic thermal insulation infilled wall and the steel frame is excellent.
引文
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[2]许淑芳,张兴虎,马孝德,姜维山.框支格构式轻型板结构试验研究[J].西安建筑科技大学学报,1998,30(3):240-243
[3]Lin Haiyan,QuNan.Residential Building Energy Consumption and Building Envelop[J].China,Hangzhou(International)Optimum Human Settlements & Environment Seminar,April,2003:90-92
[4]徐占发.建筑节能技术实用手册[M].北京:中国建筑工业出版社,2005
[5]孙丽,付中英,岳德山.我国墙体改革的现状及发展趋势[J].建筑砌块与砌块建筑,1998,2:28-32
[6]孙氰萍.加快发展我省墙体革新与节能建筑[J].四川建材,2004,5:22-24
[7]林克辉.新型建筑材料及应用[M].广州:华南理工大学出版社,2006
[8]李思远,杨伟,杨鸣波.木塑复合材料挤出成型工艺及性能的研究[J].塑料工业,2003,23(11):22-24
[9]何国山.我国木塑产品的现状、研究和发展[J].科技信息,2007,25:296
[10]邹石龙.木塑复合材料发展现状及其存在的问题[J].广东建材,2007,11:211-212
[11]王颖.木塑复合材料研究概况[J].上海塑料,2007,4:6-10
[12]张天昊,张求慧,李建章.木塑复合材料改性研究进展及应用前景[J].包装工程,2008,29(2):188-190
[13]石安富,龚云表.工程塑料手册[M].上海:上海科学技术出版社,2003,3
[14]国家质量技术监督局.塑料压缩性能试验方法.中华人民共和国国家标准GB/T 1041-92
[15]国家质量技术监督局.塑料弯曲性能试验方法.中华人民共和国国家标GB/T 9341-2000
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