【作者】 张怀金；

【导师】 孙伟民；

【作者基本信息】 南京工业大学 ， 结构工程， 2004， 硕士

【摘要】 在建设中，要贯彻“保护土地资源，保护耕地”的基本国策，还要兼顾节能的迫切要求，复合型空心砌块必将受到大力地推广和应用。本文对一种节能效果很好的新型复合混凝土小型空心砌块的结构和抗震性能进行试验研究。 该砌块具有节能、节土、环保、施工方便等诸多优点，其砌筑而成的墙体节能效果类似于夹心墙，而施工工艺却简化很多。但是，关于该类砌块工程中应用的文献很少，也不见相关的试验资料，规范更是一片空白，使得该砌块的推广使用受到很大的限制。本文就是对该砌块砌体基本力学和抗震性能进行了一系列的试验和理论研究，进行分析和总结，给出了一些结论和建议，这些结论和建议具有现实的工程意义。 具体的研究内容如下： 对该砌块单体进行抗压试验，得到该砌块的块体抗压强度。然后，进行砌块砌体的抗压试验，得到砌块砌体的抗压强度。同时按照不同的构造要求，砌筑了3片不同的墙体试件，进行抗压试验，考察受力性能，比较承载力试验值和计算值，得到适合该砌体墙的抗压计算方法，探讨了不同构造措施对墙体试件在竖向荷载下受力性能的影响。 对抗剪试件进行抗剪强度试验研究，与规范所给出的抗剪强度公式相比较，给出了适合本砌体的抗剪强度公式，并应用到墙体的抗震抗剪承载力计算中。 采用有限元分析软件Ansys 模拟墙体在实际工程中竖向力和水平力共同作用下的受力性能，对其进行非线性分析，根据分析成果来设计和分析墙体试件在竖向力和水平低周反复荷载下的试验。 制作了2片墙片试件，进行竖向荷载下的水平低周反复荷载试验，分析了在不同的构造措施条件下复合砌块砌体墙片的滞回特性、延性、耗能能力、刚度退化、破坏机理等抗震力学性能。 通过试验和理论分析进行总结，提出了复合砌块砌体抗压、抗震抗剪承载力计算建议方法，同时也提出了构造建议和设计建议，为复合混凝土小型空心砌块的推广和应用提供参考。更多还原

【Abstract】 In the construction, the national policy of "Protecting land source and farm" must be executed and the urgent requirement of energy saving have to be met as well. Composite concrete small hollow blocks with the advantages of both energy saving and land source protecting are to be adopted widely soon. The experimental study on the structural and seisemic behavior of masonry walls made of this type blocks is presented in the paper.This type of blocks has many excellent properties such as: energy insulating, land saving, environment p rotecting, easy t o b e c onstructed, e tc. Walls c onstructed w ith this type of blocks have as good energy abilities as cavity wall filled with insulation while the construction process is much easier. In our nation, information and studies on the performance of this new type of blocks are scarce and the code is also completely blank about this, which delays and limits the utility of it. This paper presents a series of experimental and theoretical studies, some conclusions are drawn and some suggestions are given also, which has practical engineering meanings.The main study contents:Compression experiments are made to test the compression strength of both single blocks and standard masonry specimens. According to the test results and the code, the compression strengths of the walls are calculated. Then 4 wall samples with different structural methods are tested on the compression strength, the comparison between test results and the calculated values is made to determine an appropriate formula to calculate the compression strength of the walls, the influences of different structural methods on walls’ behavior are also discussed.Experiment is taken to draw the shear strength of composite concrete small hollow block masonry. Then a comparison between the experiment results and the shear strength formula given by the code is made to suggest an appropriate method to determine the shear strength of the blocks. And the experimental shear strength is adopted in the later calculation.Nonlinear analysis on wall models simulating practical walls under compression load and shear is made with FEA program Ansys, which helps to design and analysis the low cyclic experiment.2 full-size wall models are tested under both constant vertical load and horizontal low cyclic load to investigate the lateral resistance, ductility, energy-dissipation,stiffness degradation, hysteresis curves, and failure mechanisms.Through the experimental study and theoretical analysis, the behavior of the composite concrete small hollow block masonry walls under compression, shear and seismic loads are concluded.At the same time, some structural suggestions and designing suggestions are presented based on the experiment study and theoretical analysis in this paper to offer basic references for the use of composite blocks.更多还原