【作者】 袁泉；

【导师】 姚谦峰；

【作者基本信息】 西安建筑科技大学 ， 结构工程， 2003， 博士

【摘要】 密肋壁板轻框结构是一种新型结构体系，在前期研究工作中已取得了重要的阶段性成果，但在结构体系的模态分析与非线性地震反应研究等方面尚为空白。本文对密肋壁板轻框结构模态分析、非线性地震反应及基于损伤性能的抗震设计方法进行了较为详细的研究，完成了以下几方面工作： 1．提出了硅酸盐砌块的本构关系，采用实体单元随动强化模型与William-Warnke五参数破坏准则对密肋复合墙板进行了非线性有限元分析，考虑了硅酸盐砌块与混凝土肋梁、肋柱开裂模式，较真实再现了墙板受力破坏的全过程，通过试验结果验证了计算模型的合理性。根据中高层建筑的受力特点，由竖向荷载与水平荷载的变化对于密肋复合墙板受力性能的影响进行了数值模拟分析，并对墙板的设计与构造提出了指导性建议。 2．根据密肋复合墙板的承载力、刚度以及破坏模式与变形性能，提出了密肋复合墙板的四线型恢复力模型，确定了恢复力模型中各个特征参数点的计算公式。在大量数值分析的基础上，提出了密肋复合墙板双参数损伤模型，确定了损伤因子的取值并对部分试验墙板进行了损伤分析，验证了损伤模型的可靠性。 3．进行了1／10比例模型房屋模拟地震振动台试验，通过锤击与正弦波扫频试验得出模型房屋的模态参数，通过地震波激励试验得出模型房屋的地震反应、破坏特征以及抗震性能，通过相似比换算研究了原型结构的模态参数与抗震能力。 4．建立了弹性阶段密肋壁板轻框结构的简化分析模型，采用经典的铁木辛柯梁(TIMOSHENKO)理论研究了密肋壁板轻框结构的模态解析算法。采用三维梁单元与三维壳单元建立了密肋壁板轻框结构模态分析的三维模型，并通过模态压缩技术研究了三维模型有限元模态的可靠性问题。 5．采用三维计算模型，对振动台试验模型与工程实例进行了非线性地震反应分析，建立了密肋壁板轻框结构的非线性地震反应的分析方法。结合现行规范，试验与算例探讨了密肋壁板轻框结构在“小震”下弹性位移角限值和“大震”下弹塑性位移角限值。 6．将基于性能的设计思想引入密肋壁板轻框体系的设计方法中。结合国内外研究成果，建立了本结构剪切型损伤模型。把“小震不坏、中震可修、大震不倒”的抗震设计原则与基于损伤性能的方法统一起来，采用不同的损伤容限值来限定各水准下的结构损伤，从而使所设计的结构充分体现基于损伤性能抗震设计的实质要求。根据已有的研究成果，详细讨论了损伤模型参数计算的两种方法：时程分析法与简化计算法的具体内容和步骤。 本文的创新之处在于： 西安建筑科技大学博士学位论文一 1）．建立了密肋复合墙板的恢复力模型与损伤模型。 2）．采用振动台试验方法研究了密肋壁板轻框结构的模态与地震反应。 3）．建立了密肋壁板轻框结构模态的解析计算方法与有限元计算方法，采用模态压缩技术 研究了有限元模型的可靠性问题。 4）．采用三维模型对试验模型和工程实例进行了非线性地震反应分析，给出了结构层间位 移角限值。 5）．将基于性能的抗震设计思想引入设计方法，建立了结构剪切型损伤模型，在已有研究 成果基础上，讨论了本结构损伤模型参数计算的两种方法。更多还原

【Abstract】 Multi-ribbed slab with light frame structure is a new structural system. Important progress has been made inprevious study, but mode analysis and non-linear earthquake response study on the new structure remain blank andunsolved. The thesis is devoted to these two problems and to aseismic design based on damage property. Such workhas been done as follows:1. Stress-stain relationship of silicate brick was proposed. Solid element kinematic hardening model and William-Wamke 5-parameter failure mode were adopted in the non-linear FEM analysis on the multi-ribbed slab wall. Silicate brick’s, concrete rib beam and rib column’s cracking and crushing law was considered so as to reflect the whole failure process of the slab. Tests were carried out to check the reasonableness of the computation model. Numerical analyses on such factors as vertical load, horizontal load were done. And advice on the design and detailing of the slab were given.2. According to the slab’s bearing capacity, rigidness, failure mode and deformation property, the thesis suggested four-linear resilience model for the slab and computation formula for the characteristic points’ values in the model. Based on large amounts of numerical analysis, bi-parameter damage model of the slab was proposed, damage factors’ value was defined and damage analysis was carried out on some tested slabs, the reliability of the damage model were validated.3. Shaking table test on 1/10 building model was carried out. Through hammer blow test and sine wave swept test, the model’s parameters were acquired. By earthquake wave excitation, the model’s earthquake response, failure traits and aseismic property were gained. Through ratio conversion, prototype’s mode parameters and aseismic capability were studied.4. Simplified analysis model was established for multi-ribbed slab with light frame structure at elastic stage. Classical Timenshenko beam theory was employed in the study on analytic method of the mode. Three-dimensional beam element and three-dimensional shell element were used to establish three-dimensional model for the structure. Mode condensed technology was used to solve reliability problem of three-dimensional FEM mode.5. Three-dimensional computation model was adopted in the non-linear earthquake response of model in shaking table test and practical project so that analysis method of multi-ribbed slab with light frame structure’s non-linear earthquake response was given. To match the prevailing codes, tests and computation examples discussed elastic angular displacement limit value under small earthquake and plastic angular displacement limit value under big earthquake respectively. 6. The idea of a seismic design based on property was introduced into the design method of the new structure.Correlational research achievement both at home and abroad were studied to establish shear-type damage model for the structure. To associate aseismic design idea that "no damage under light earthquake, reparable under medium degree earthquake and no collapse under intense earthquake" with design method based on damage property, the thesis adopted different damage limit values to control structural damages at different levels so that the designed structure can embody the substantial need of aseismic design based on damage property. Based on existing research conclusions, two methods calculating damage model’s parameters were discussed in detail. They are time-history analysis method and simplified method. The originality of the thesis lies in:1) Establishment of restoring force model and damage model of multi-ribbed slab2) Shaking table test to study the mode of earthquake response of multi-ribbed slab with light frame structure 3) Proposal of analytic method and FEM method of the structure’s mode, study on the reliability of the FEMmodel by mode condensed technology 4) Non-linear earthquake response analysis on test model and practical engineering by three-dimensional model,suggestion of inter-layer angular displacement value.5) Introduct更多还原