装配式后灌芯混凝土板受力性能试验研究

发布时间：2018-01-13 14:41

本文关键词：装配式后灌芯混凝土板受力性能试验研究　出处：《吉林建筑大学》2017年硕士论文　论文类型：学位论文

【摘要】：装配式建筑具有建设周期短、生产效率高、工程质量安全等级高的优点,其环保高效的生产建造方式符合我国建筑行业战略转型发展的要求。装配式楼板是装配式建筑中的一个重要组成部分,本文对一种新型装配式混凝土板—装配式后灌芯混凝土板进行研究。装配式后灌芯混凝土板是由预制横向空心混凝土条形板和现浇钢筋混凝土两部分组成的共同受力的整体。预制横向空心混凝土条形板的板侧开有横向空心圆孔,形成与现浇钢筋混凝土的侧向叠合,其板厚即为装配式后灌芯混凝土板的板厚,同一跨度条件下装配式后灌芯混凝土板较目前使用的叠合楼板厚度小,具有良好的经济性;此外,施工过程中预制条板为工人提供干作业面并且大量避免了现场支模引起的传统施工作业的弊端,减小对施工环境的影响。主要研究内容如下:(1)预制横向空心混凝土条形板静力性能试验研究对两组共四件尺寸为3000×596×100mm3的预制横向空心混凝土条形板进行静力试验,试验结果表明:预制横向空心混凝土条形板的试验极限承载能力高于理论计算的极限承载力,可以根据规范法进行承载力计算,且计算结果具有足够的安全储备,极限破坏时试件具有明显的破坏预兆,具有足够的刚度和抵抗变形的能力。(2)装配式后灌芯混凝土双向板静力性能试验研究对两组共两件尺寸为4000×3200×100mm3的装配式后灌芯混凝土双向板进行静力试验,试验结果表明:装配式后灌芯混凝土双向板的试验极限承载能力高于理论计算的极限承载力,可以根据规范法进行承载力计算,且计算结果具有足够的安全储备,实现了由施工阶段预制条板受力到使用阶段双向板受力的转变,板底裂缝分布符合双向板特征,裂缝的分布及密集程度说明试件整体性良好,受力合理。(3)两端悬挑装配式后灌芯混凝土单向板静力性能试验研究对两组共两件尺寸为5120×1320×100mm3的两端悬挑装配式后灌芯混凝土单向板进行静力试验,试验结果表明:两端悬挑装配式后灌芯混凝土单向板的试验极限承载能力高于理论计算的极限承载力,可以根据规范法进行承载力计算,且计算结果具有足够的安全储备,负弯矩钢筋有效承担支座处的弯矩和剪力,布置方式合理,试件整体性能良好。(4)各试件基于ABAQUS的有限元模拟分析本文应用ABAQUS有限元软件对各试件进行模拟分析,试验结果与模拟分析计算结果吻合良好,表明模型与参数可靠。本文研究为工程设计及理论分析提供依据。
[Abstract]:Prefabricated buildings have the advantages of short construction period, high production efficiency and high engineering quality and safety grade. Its environmental protection and efficient production and construction methods meet the requirements of the strategic transformation and development of the construction industry in China. Assembly floor is an important part of the assembly building. In this paper, a new type of prefabricated concrete slabs is studied, which is composed of prefabricated transverse hollow concrete strips and cast-in-place reinforced concrete slabs. The transverse hollow circular hole is opened on the side of the slab of the precast transverse hollow concrete strip. The thickness of the slab is the thickness of the prefabricated backfilling concrete slab, and the thickness of the prefabricated backfilled concrete slab is smaller than that of the present superimposed floor slab under the same span condition. Have good economy; In addition, prefabricated strip boards provide workers with dry working surfaces during construction and avoid the disadvantages of traditional construction work caused by field formwork. To reduce the impact on the construction environment. The main research contents are as follows: 1). Static performance test of precast transverse hollow concrete strip slabs static tests were carried out on two groups of four prefabricated transverse hollow concrete strips with dimensions of 3000 脳 596 脳 100mm3. The test results show that the experimental ultimate bearing capacity of precast transverse hollow concrete strip is higher than that of theoretical calculation, and can be calculated according to the code method. The calculated results have sufficient safety reserve, and the specimen has obvious damage warning when the limit failure. Have sufficient stiffness and resistance to deformation. Static performance Test of two sets of Prefabricated backfilling concrete Bidirectional Slab static Test was carried out on two groups of fabricated backfill concrete two-way slabs with size 4000 脳 3200 脳 100mm3. The experimental results show that the experimental ultimate bearing capacity of the assembled backfilling concrete two-way slab is higher than that of the theoretical calculation, and can be calculated according to the criterion method. And the calculation results have sufficient safety reserves, from the construction stage of prefabricated strip plate force to the use of two-way plate force transformation, the slab bottom crack distribution conforms to the bidirectional plate characteristics. The distribution and density of cracks indicate that the integrity of the specimens is good. Reasonable force). Static behavior Test study on two groups of two groups of cantilever assembled backfilling concrete unidirectional Slab with the size of 5120 脳 1320 脳 100mm3. The test. The test results show that the ultimate bearing capacity of the cantilevered backfilling concrete unidirectional slab is higher than that of the theoretical calculation, and can be calculated according to the code method. And the calculation results have sufficient safety reserve, negative moment steel bar can effectively bear the moment and shear force of the bearing, and the arrangement is reasonable. The whole performance of the specimen is good. 4) the finite element simulation analysis of each specimen based on ABAQUS is carried out by using the ABAQUS finite element software in this paper. The experimental results are in good agreement with the calculated results of the simulation analysis, which indicates that the model and the parameters are reliable. The research in this paper provides the basis for the engineering design and theoretical analysis.
【学位授予单位】：吉林建筑大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU37

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