蒸压粉煤灰砖砌体力学性能及墙体抗震性能试验研究

发布时间：2018-03-08 19:23

本文选题：蒸压粉煤灰砖　切入点：砌体　出处：《沈阳建筑大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着可持续发展指导方针在我国资源利用领域的实施,国家在建筑领域提出了节能、节土的墙体改革政策。蒸压粉煤灰砖具有低碳、节能、利废等优点。在其发展的早期由于生产工艺等原因,蒸压粉煤灰砖的耐久性较差,使其在具体应用中受到限制。现今蒸压粉煤灰砖通过对压制成型等工艺环节的改进,其强度和耐久性有了很大的提高。为了在实际工程中合理地对经高压多次排气压制成的蒸压粉煤灰砖进行应用,并为相关规范的编制提供试验及理论依据,本文开展了如下研究工作：(1)研究蒸压粉煤灰砖的力学性能。通过试验对蒸压粉煤灰单块砖进行抗压与抗折性能的试验,分析了影响蒸压粉煤灰砖抗压强度与抗折强度影响因素。(2)通过试验研究了蒸压粉煤灰砖砌体的轴心受压力学性能。考虑了砂浆强度对砌体抗压强度的影响,对比分析了蒸压粉煤灰砖砌体与烧结砖砌体的轴心受压力学性能。(3)通过试验研究了蒸压粉煤灰砖沿通缝抗剪性能,考虑了不同砂浆强度对砌体抗剪性能的影响,得出了其抗剪破坏特征,分析了砂浆对蒸压粉煤灰砖砌体沿通缝抗剪强度的影响。(4)通过试验研究了蒸压粉煤灰砖墙体在低周往复荷载作用下的抗震性能,分析了蒸压粉煤灰墙体的承载力、变形与破坏特征,以及强度、刚度、延性、耗能等性能,最后总结分析了影响蒸压粉煤灰墙体抗震性能的因素。
[Abstract]:With the implementation of sustainable development guidelines in the field of resource utilization in China, the state has put forward a wall reform policy of saving energy and soil in the field of construction. In the early stage of its development, because of the production process, the durability of autoclaved pulverized coal brick is poor, which makes it limited in specific application. Its strength and durability have been greatly improved. In order to reasonably apply autoclaved fly ash brick pressed by high pressure multiple exhaust in practical engineering, and to provide experimental and theoretical basis for the compilation of relevant codes, The mechanical properties of autoclaved fly ash brick were studied in this paper. The compressive and flexural properties of autoclaved fly ash single brick were tested. The influence factors of compressive strength and flexural strength of autoclaved fly ash brick are analyzed. The mechanical properties of autoclaved fly ash brick masonry under axial compression are studied through experiments, and the influence of mortar strength on the compressive strength of masonry is considered. The axial compression mechanical properties of autoclaved fly ash brick masonry and sintered brick masonry are compared and analyzed. The shear resistance of autoclaved fly ash brick along the pass joint is studied through experiments. The influence of different mortar strength on the shear resistance of masonry is considered. The shear failure characteristics of autoclaved fly ash brick masonry are obtained, and the influence of mortar on the shear strength along the opening joint of autoclaved fly ash brick masonry is analyzed. The seismic behavior of autoclaved fly ash brick wall under low cycle reciprocating load is studied through experiments. The bearing capacity, deformation and failure characteristics, strength, stiffness, ductility and energy dissipation of autoclaved fly ash wall are analyzed. Finally, the factors affecting seismic performance of autoclaved fly ash wall are summarized and analyzed.
【学位授予单位】：沈阳建筑大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU364;TU352.11

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