新型节能页岩烧结砌块结构受力性能及设计方法研究

发布时间：2018-01-05 22:20

本文关键词：新型节能页岩烧结砌块结构受力性能及设计方法研究　出处：《西安建筑科技大学》2014年博士论文　论文类型：学位论文

【摘要】：“十一五”期间开发了单一墙体材料满足建筑节能65%的目标要求的新型节能页岩烧结砌块，并已建成国内第一条、世界上规模最大的新型节能页岩烧结砌块生产线，奠定了新型节能页岩烧结砌块在我国广泛推广应用和开展国际合作的良好基础，但是由于受到时间和应用条件的限制，尚未进行力学性能、抗震性能和设计方法研究。本文针对新型节能页岩烧结砌块——页岩烧结保温砌块和页岩烧结复合外墙保温砌块（WDF）展开系统的试验研究，并根据试验研究成果提出结构设计方法，为新型节能页岩烧结砌块的推广和应用提供支撑，本文具体研究内容如下：（1）页岩烧结保温砌块砌体力学性能试验研究针对29排孔和21排孔两类页岩烧结保温砌块分别开展了砌体抗压性能试验和抗剪性能试验研究，获得了页岩烧结保温砌块砌体基本力学性能指标，掌握了该类砌体破坏特征和破坏机理，提出了抗压强度和抗剪强度计算表达式，并对砌体变形性能进行研究，得到砌体应力－应变关系式，给出了弹性模量计算表达式和泊松比建议取值；此外还进行了29排孔页岩烧结保温砌块砌体在剪压复合受力状态下的抗剪性能试验，掌握了剪压破坏的基本特征，提出了砌体静力抗剪强度计算公式。（2）页岩烧结保温砌块承重墙体抗震性能试验研究通过10片足尺页岩烧结保温砌块墙体试件低周反复荷载试验，，分析了该类墙体破坏形态和破坏特征，同时对墙体各项抗震性能指标（滞回曲线、骨架曲线、延性、耗能性能、刚度退化、抗震抗剪承载力等）进行了详细的分析和计算，并针对墙体恢复力模型和抗倒塌性能进行分析，最后提出了页岩烧结保温砌块墙体抗震抗剪承载力建议公式，为页岩烧结保温砌块的推广和应用提供了试验数据和理论支持。（3）页岩烧结保温砌块框架填充墙平面外振动台试验研究通过对四片足尺单层单跨页岩烧结保温砌块框架填充墙试件进行平面外模拟地震振动台试验，研究了在El-Centro波、Taft波、天津宁河波和Double El-Centro波等地震波作用下模型结构反应的特点，通过频率、加速度、相对位移、钢筋应变反应分析了填充墙与框架结构之间的连接构造措施对模型结构的平面外地震反应的影响，建议在实际工程中采用与框架均柔性连接的构造方式，水平拉结带间距不超过五皮砌块高度、填充墙与框架梁之间的拉结筋间距取1m。（4）剪力墙外贴WDF保温体系平面外振动台试验研究通过对四片足尺剪力墙外贴WDF保温体系试件进行平面外模拟地震振动台试验，研究了在El-Centro波、Taft波、天津宁河波和Double El-Centro波等地震波作用下模型结构反应的特点，通过频率、加速度、相对位移、钢筋应变反应分析了锚栓布置数量及布置形式对模型结构的平面外地震反应的影响，建议在工程设计中可适当考虑加强结构顶部构造措施，比如增加锚栓个数等。（5）页岩烧结保温砌块墙体刚架－等效单斜撑力学模型在页岩烧结保温砌块墙体低周反复荷载试验研究的基础上，提出了页岩烧结保温砌块墙体刚架－等效单斜撑力学模型，并采用SAP2000有限元分析程序分别对该模型在弹性阶段和弹塑性阶段进行分析验证。通过分析提出了等效单斜撑有效宽度计算公式，确定了等效单斜撑塑性铰的基本属性，提出了等效单斜撑轴向屈服力和屈服位移计算表达式，并提出了等效单斜撑塑性铰的力－位移本构关系，通过和试验结果比较发现，利用页岩烧结保温砌块墙体刚架－等效单斜撑力学模型可以很好地反映原型结构在弹性阶段和弹塑性阶段的受力性能。（6）新型节能页岩烧结砌块结构设计方法研究根据试验研究成果和实际工程应用资料以及现有规范规定，分别提出页岩烧结保温砌块砌体强度设计指标、页岩烧结保温砌块墙体抗震设计方法、新型节能页岩烧结砌块结构构造技术和新型节能页岩烧结砌块结构施工技术，为《页岩烧结保温砌块结构设计规程》、《页岩烧结保温砌块结构构造图集》和《新型节能页岩烧结砌块结构施工技术规程》的编制提供基本参数，并为新型节能页岩烧结砌块的推广和应用提供依据。
[Abstract]:"The new energy-saving shale sintered block in 11th Five-Year during the development of single wall materials to meet energy-saving 65% of the objectives and requirements, and has completed the first section, the world's largest new energy saving sintered shale brick production line, laid a good foundation of new energy-saving shale sintered block in our country wide application and carry out international cooperation. But due to time and application conditions, not mechanical properties, research performance and seismic design method.
According to the new energy-saving shale sintered block of shale sintering block and shale sintered composite insulation block (WDF) experimental study on the system, and puts forward the structure design method based on the experimental results, to provide support for the promotion and application of new energy-saving shale sintered block, the specific contents are as follows:
(1) experimental study on mechanical properties of shale sintered insulation block masonry
In the 29 row of holes and 21 rows of holes of two types of shale fired heat insulation block were carried out experimental study on the performance of the compressive test and masonry shear, the basic mechanical properties of masonry shale sintering, mastered its failure characteristics and failure mechanism of masonry, compressive strength and shear strength calculation formula is put forward, and Study on deformation behavior of masonry masonry, obtained the stress-strain relationship, given elastic modulus and Poisson's ratio calculation formula recommended values; in addition to the 29 rows of holes in the shale fired heat insulation block masonry shear shear test and compression stress condition, grasp the basic characteristics of shear compression failure, put forward the calculation formula of shear strength of masonry.
(2) experimental study on seismic performance of shales sintered insulation block bearing wall
The 10 pieces of full scale shale fired heat insulation masonry wall specimens under low cyclic loading test, analyzed the morphological damage characteristics and damage the wall, while the index of the seismic performance of the wall (hysteretic curve, skeleton curve, ductility, energy dissipation, stiffness degradation, seismic shear strength etc.) is analyzed and calculated. In detail, and the restoring force of the wall analysis model and anti collapse performance, finally put forward the shale fired heat insulation block wall seismic shear capacity formula, provides support for test data and theory for the popularization and application of the shale fired heat insulation block.
(3) experimental study on the outer shaking table of the filled wall of the shale sintered insulation block frame
The plane through the four full-scale single span shale fired heat insulation block wall filled frame specimens and shaking table test on the El-Centro wave, Taft wave, characteristics, model structure reaction of Tianjin Ninghe wave and Double El-Centro wave under the action of seismic waves by frequency, acceleration, relative displacement, strain of steel reaction analysis of the influence of filling connection measures between the wall and frame structure of plane seismic response to the structure of the model, and the proposed frame are flexible connection structure in practical engineering, the level spacing of not more than five drawknot belt leather block height, filling Rachel reinforcement spacing between 1m. wall and frame beam
(4) experimental study on the outside plane vibrating table of the WDF insulation system outside the shear wall
Based on four full-scale shear wall with WDF insulation system of specimen plane shaking table test on the El-Centro wave, Taft wave, characteristics, model structure reaction of Tianjin Ninghe wave and Double El-Centro wave under the action of seismic waves by frequency, acceleration, relative displacement, strain of steel reaction were analyzed out of plane seismic response of anchor bolt arrangement number and layout of the model structure, suggestions in engineering design may be appropriate to consider strengthening the structure on top of structural measures, such as increasing the number of anchors.
(5) mechanical model of rigid frame equivalent monoclinic bracing of shale sintered insulation block wall
Based on the study of masonry wall under low cyclic loading tests of insulation shale, the shale fired heat insulation block wall rigid frame diagonal equivalent mechanical model, and the SAP2000 finite element analysis program of the model is tested in elastic stage and plastic stage. Through the analysis of the equivalent diagonal effectively the width calculation formula to determine the equivalent diagonal basic properties of the plastic hinge, the equivalent diagonal axial yield force and yield displacement calculation formula, and put forward the equivalent diagonal force displacement plastic constitutive relation, by comparing with the experimental results, using the shale fired heat insulation block wall rigid frame equivalent diagonal mechanical model can well reflect the prototype structure on the mechanical behavior of elastic and elastic-plastic stage.
(6) study on the design method of new energy saving shale sintering block
According to the provisions of the result of the research and the practical application and the existing norms, respectively put forward masonry strength design index of sintering shale, the shale fired heat insulation block wall seismic design method, the new energy-saving shale sintered block structure technology and new energy saving shale sintered block structure construction technology, "the shale fired heat insulation block structure design specification >, < provide the basic parameters for shale fired heat insulation block structure of" and "new energy saving shale sintered block structure construction technology in accordance with the rules, and provide the basis for the new energy-saving shale fircd promotion and application block.

【学位授予单位】：西安建筑科技大学
【学位级别】：博士
【学位授予年份】：2014
【分类号】：TU364

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