粮食荷载作用下密肋房式粮仓复合墙体整体受力性能分析

发布时间：2018-07-07 22:26

本文选题：密肋复合板结构 + 试验研究　；参考：《河南工业大学》2017年硕士论文

【摘要】：建筑工业化最初是一些发达国家为了克服传统建筑生产中存在的耗能高、污染大、施工质量差等一系列问题而出现的。近年来,我国民用建筑工业化发展如火如荼,先后出现了大板建筑、框架轻板建筑、大模板建筑等形式,政府也先后出台多项政策来保障了建筑工业化的高速、优质发展。然而粮仓建筑的工业化水平依然很低,存在着建设过程中现场工作量大,可持续发展水平低,对新材料、新技术的容纳程度低,对环境的亲和性弱,工业化程度滞后等一系列的问题。密肋复合板结构作为一种轻质、高强、节能的新型预制装配式结构,在民用建筑中展现出来了良好的抗震性能、施工适用性强、工业化程度高等一系列优点。密肋复合板结构在粮仓中的适用性及优点也已经得到了初步的验证。但是把密肋复合板结构引入到平房仓中来,对整体结构的受力性能尚缺乏系统性的分析。本文的主要研究内容如下:对国内学者关于密肋复合板结构的研究成果进行梳理分析,设计结构模型试验,对密肋复合墙板进行侧向压力作用下的破坏性试验。研究分析密肋复合板结构在侧压力荷载作用下的受力、破坏形式,试件对均分布荷载的承载能力及受力机理。采用大型通用有限元软件ABAQUS建立了密肋复合板结构的有限元分析模型,并通过与试验同样的加载制度进行了数值模拟分析,与试验结果比对,验证其有效性和合理性。同时,更加直观而全面的分析了密肋复合板结构的受力性能。利用通过验证的有限元模型系数,建立相同大小的370mm厚普通砖墙传统平房仓和300mm厚密肋房式仓模型,分别进行整体受力性能分析,对比了两种仓型在粮食荷载作用下的内力、应力、变形等情况,分析表明密肋房式仓的抗侧能力和分散传递荷载的能力更加显著。
[Abstract]:The industrialization of construction appeared in some developed countries in order to overcome a series of problems such as high energy consumption, high pollution and poor construction quality. In recent years, the industrialization of civil architecture in our country has developed in full swing, such as large slab building, frame light slab building, large formwork building and so on. The government has also issued many policies to guarantee the high speed and high quality development of construction industrialization. However, the industrialization level of granary building is still very low, there is a heavy workload in the construction process, low level of sustainable development, low capacity for new materials and new technologies, and weak affinity to the environment. The degree of industrialization lags behind a series of problems. As a new type of prefabricated structure with light weight, high strength and energy saving, the multi-ribbed composite plate structure has shown a series of advantages in civil buildings, such as good seismic performance, strong construction applicability, high degree of industrialization and so on. The applicability and advantages of multi-ribbed composite plate structure in granary have also been preliminarily verified. However, the mechanical performance of the whole structure is still lack of systematic analysis when the multi-ribbed composite plate structure is introduced into the bunker. The main contents of this paper are as follows: carding and analyzing the research results of domestic scholars on the structure of multi-ribbed composite panels, designing structural model tests, and carrying out destructive tests on multi-ribbed composite wall panels under lateral pressure. The stress and failure mode of multi-ribbed composite plate structure under lateral pressure are studied and analyzed. The load-bearing capacity and stress mechanism of the specimen to average distributed load are analyzed. The finite element analysis model of multi-ribbed composite plate structure is established by using Abaqus, and the validity and rationality of the model are verified by the numerical simulation of the same loading system as the test results. At the same time, the mechanical performance of multi-ribbed composite plate structure is analyzed more intuitively and comprehensively. By using the verified finite element model coefficient, the traditional warehouse model of 370mm thick brick wall and the model of 300mm thick rib warehouse are established, and the internal forces of the two types under grain load are compared. The analysis of stress and deformation shows that the lateral resistance and the ability of spreading load are more obvious.
【学位授予单位】：河南工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU31

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