本文選題：高層建筑結(jié)構(gòu) + 整體穩(wěn)定失效��； 參考：《哈爾濱工業(yè)大學》2014年博士論文

【摘要】：高層結(jié)構(gòu)大震失效的損傷演化量化描述是實現(xiàn)基于性能抗震設計方法的關鍵。為描述高層建筑結(jié)構(gòu)的地震失效機理，本文從結(jié)構(gòu)大震下整體穩(wěn)定失效過程及構(gòu)件損傷發(fā)展累積兩個角度出發(fā)，研究高層建筑結(jié)構(gòu)大震失效演化過程及損傷狀態(tài)的量化，實現(xiàn)了從結(jié)構(gòu)整體穩(wěn)定失效判別指標、基于材料損傷的構(gòu)件損傷到結(jié)構(gòu)整體損傷的失效演化過程量化評價，具體的研究工作如下： （1）高層建筑結(jié)構(gòu)整體穩(wěn)定分析。通過連續(xù)化方法的體系變形分析，建立了高層建筑結(jié)構(gòu)的初始等效抗側(cè)剛度求解方法，明確了結(jié)構(gòu)變形的分布形態(tài)，在此基礎上研究了結(jié)構(gòu)的重力二階效應及其與結(jié)構(gòu)剛重比的關系，并給出了結(jié)構(gòu)體系整體穩(wěn)定的限定條件。 （2）基于整體穩(wěn)定的失效判別方法研究。通過整體穩(wěn)定平衡分析提出了瞬時等效剛重比的概念，揭示了瞬時等效剛重比與結(jié)構(gòu)非線性響應之間的關系，給出了基于瞬時等效剛重比變化的結(jié)構(gòu)整體失效判別方法，得到了失效判別指標與結(jié)構(gòu)失效狀態(tài)的量化關系，，并通過模型試驗，驗證了該失效判別方法的正確性。 （3）基于材料損傷的剪力墻墻肢構(gòu)件失效研究。通過不同設計參數(shù)的鋼筋混凝土剪力墻低周往復試驗結(jié)果分析及失效演化過程的有限元模擬分析，得到了影響鋼筋混凝土剪力墻材料損傷演化特點的高寬比和軸壓比等主要參數(shù)�；跇�(gòu)件的材料損傷發(fā)展特點給出了鋼筋混凝土剪力墻彎曲型失效和剪切型失效兩種失效模式分類。通過材料損傷信息與構(gòu)件性能階段性變化的關系，以材料豎向損傷發(fā)展信息為主，對損傷信息進行提取分類得到能夠合理表征剪力墻構(gòu)件損傷演化特點的損傷指標；針對不同失效模式給出了量化墻肢失效演化過程中各損傷狀態(tài)的損傷指標值的確定方法。 （4）基于材料損傷的連梁構(gòu)件失效研究。明確了影響鋼筋混凝土連梁材料損傷發(fā)展演化特點的主要影響因素為剪跨比、廣義剪壓比及剪箍比。基于連梁水平向材料損傷發(fā)展規(guī)律給出了彎曲型失效、剪切型失效和彎剪型失效三種失效模式的分類。通過材料損傷發(fā)展特點的研究，將能夠合理反映連梁性能變化及損傷特點的損傷信息轉(zhuǎn)化成構(gòu)件損傷指標。針對不同失效模式給出了定量描述連梁失效演化過程中各損傷狀態(tài)的損傷指標值確定方法。 （5）基于材料損傷的鋼筋混凝土梁柱構(gòu)件失效研究。通過不同設計參數(shù)對鋼筋混凝土材料損傷發(fā)展演化特點的影響分析，明確了失效模式關鍵影響因素�；诓牧蠐p傷發(fā)展特點給出了鋼筋混凝土梁柱失效模式的分類。通過材料損傷發(fā)展與構(gòu)件性能階段性變化的關系劃分構(gòu)件性能階段，以沿軸向發(fā)展的損傷為主，分別選取了不同區(qū)域的材料平均受壓損傷為損傷指標，表征梁柱不同的失效模式，針對不同失效模式明確了各階段臨界狀態(tài)的損傷指標值，并給出了定量描述構(gòu)件失效演化過程中各損傷狀態(tài)的損傷指標值確定方法。 （6）高層建筑結(jié)構(gòu)基于構(gòu)件損傷的整體失效研究�；跇�(gòu)件失效演化過程的損傷模型，以構(gòu)件類型、構(gòu)件損傷程度及位置的重要性為依據(jù)定義了構(gòu)件損傷到結(jié)構(gòu)損傷信息傳遞系數(shù)，實現(xiàn)了由材料損傷累積發(fā)展到結(jié)構(gòu)整體損傷的結(jié)構(gòu)大震失效演化全過程量化描述，并將該方法應用到實際工程中。
[Abstract]:In order to describe the seismic failure mechanism of high building structure, this paper studies the failure evolution process and loss of the high rise building structure from two angles of the overall stability failure process and the cumulative damage development of the component. The quantitative evaluation of the damage state has realized the quantitative evaluation of the failure evolution process based on the damage of the material to the overall damage of the structure, and the specific research work is as follows:
(1) the overall stability analysis of the high-rise building structure. Through the analysis of the system deformation of the continuous method, the initial equivalent anti lateral stiffness solution method of the high-rise building structure is established, and the distribution pattern of the structural deformation is clarified. On this basis, the gravity two order effect of the structure and its relation to the structural stiffness ratio are studied, and the structure system is given. The restrictive condition of body stability.
(2) the failure discrimination method based on the whole stability is studied. The concept of instantaneous equivalent rigid weight ratio is proposed through the integral stability equilibrium analysis. The relationship between the instantaneous equivalent rigid weight ratio and the nonlinear response of the structure is revealed. The failure discrimination method based on the change of the instantaneous equivalent rigid weight ratio is given, and the failure criterion and the conclusion are obtained. The quantitative relationship between the failure state and the correctness of the failure identification method is verified by model tests.
(3) failure study of shear wall limb component based on material damage. Through the analysis of low cycle reciprocating test results of reinforced concrete shear walls with different design parameters and the finite element simulation analysis of failure evolution process, the main parameters such as height width ratio and axial pressure ratio affecting the damage evolution characteristics of reinforced concrete shear walls are obtained. Two types of failure mode classification of flexural failure and shear failure of reinforced concrete shear wall are given. Through the relationship between the damage information of the reinforced concrete shear wall and the phase change of the component performance, the information of the material vertical damage development is mainly based on the information of the material vertical damage development, and the shear wall components can be reasonably characterized by the classification of the damage information. The damage index of the damage evolution characteristics and the method for determining the damage index value of each damage state during the failure evolution process of the wall limb are given in the light of different failure modes.
(4) the main influence factors of the damage development and evolution of reinforced concrete beams are the shear span ratio, the generalized shear pressure ratio and the shear hoop ratio, which are based on the damage development of the reinforced concrete beams. The flexural failure, the shear failure and the bending shear failure mode are given three failure modes based on the horizontal beam horizontal material damage development law. Through the study of the characteristics of material damage development, the damage information which can reasonably reflect the damage characteristics of the continuous beam is transformed into the damage index of the component. In this paper, a quantitative method for determining the damage index value of each damage state in the process of failure evolution of continuous beams is given in the light of different failure modes.
(5) failure study of reinforced concrete beams and columns based on material damage. Through the analysis of the influence of different design parameters on the damage and evolution of reinforced concrete material, the key factors of failure mode are clarified. Based on the characteristics of material damage development, the classification of failure modes of reinforced concrete beams and columns is given. The damage development of the reinforced concrete beams and columns is given. The relationship between the component performance phase change and the component performance phase is divided into the component performance phase, which is mainly caused by the damage along the axial direction. The average compression damage of different regions is selected as the damage index, the different failure modes of the beam and column are characterized, and the damage index values of the adjacent state in different stages are clearly defined, and the quantitative description is given. A method for determining the damage index values of each damage state in the process of component failure evolution.
(6) the structure of the high-rise building is based on the whole failure study of structural damage. Based on the damage model of component failure evolution process, the information transfer coefficient of structural damage to structural damage is defined on the basis of the component type, the damage degree and the importance of the position of the component, and the structural large earthquake from the cumulative damage of the material to the overall damage of the structure is realized. The whole process of failure evolution is described quantitatively, and the method is applied to practical engineering.

【學位授予單位】：哈爾濱工業(yè)大學
【學位級別】：博士
【學位授予年份】：2014
【分類號】：TU973.31

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