本文選題：HSRC框架柱 + 低周反復加載　； 參考：《重慶大學》2013年博士論文

【摘要】：型鋼高強混凝土（簡稱HSRC）結(jié)構(gòu)是指高強混凝土的內(nèi)部配置型鋼和鋼筋的組合結(jié)構(gòu)，能滿足當代工程結(jié)構(gòu)向大跨、高聳、重載方向發(fā)展的需要。本文主要通過試驗、理論分析及有限元模擬分析，研究HSRC框架柱在低周反復荷載作用下的抗震性能、恢復力模型以及翼緣加栓釘對其抗震性能的影響。本文結(jié)合重慶市建設(shè)委員會項目《勁性骨架高強混凝土結(jié)構(gòu)應用性研究》（城科字2004第25號），主要研究內(nèi)容及成果概括如下： ①進行了19根低周反復加載作用下混凝土強度等級為69.9~84.4MPa的HSRC框架柱的試驗研究，，觀察了HSRC框架柱的破壞過程及破壞形態(tài)，獲得了HSRC框架柱的滯回曲線，從而得到了HSRC框架柱的骨架曲線、延性比、耗能指標等結(jié)果；分析了含鋼量、軸壓比、配箍率、剪跨比及混凝土強度等因素對型鋼高強混凝土框架柱抗震性能的影響。 ②在試驗研究的基礎(chǔ)上用試驗擬合法確定了建立了型鋼高強混凝土框架柱低周反復荷載作用下的恢復力模型。 ③利用ANSYS對低周反復加載的型鋼高強混凝土框架柱的水平荷載—位移曲線進行分析，理論分析結(jié)果與試驗結(jié)果吻合較好；理論分析了各參數(shù)對HSRC框架柱抗震性能的影響。 ④在試驗結(jié)果的基礎(chǔ)上研究了HSRC壓彎剪構(gòu)件的粘結(jié)開裂破壞強度并推導了計算粘結(jié)開裂破壞強度的簡化計算公式；研究了抗彎強度計算方法，驗證了相關(guān)規(guī)范［8］抗彎強度計算公式的安全性；研究了延性系數(shù)與各參數(shù)的關(guān)系，推導了HSRC壓彎剪構(gòu)件的延性系數(shù)的簡化公式。 ⑤進行了5根低周反復加載翼緣加相同栓釘?shù)男弯摳邚娀炷量蚣苤鶎Ρ仍囼炑芯�，分析了翼緣加栓釘對型鋼高強混凝土框架柱的破壞形態(tài)、滯回曲線、骨架曲線、延性系數(shù)、耗能指標等規(guī)律的影響，初步得到了翼緣加栓釘能有效提高同等條件下型鋼高強混凝土框架柱抗震性能及延性的結(jié)論。 ⑥通過6根低周反復加載翼緣加不同形式和個數(shù)栓釘?shù)腍SRC框架柱對比試驗，提出了型鋼翼緣的合理栓釘布置形式。提出，只要栓釘布置得當，含鋼量低的HSRC框架柱仍能達到或超過高含鋼量的HSRC框架柱延性系數(shù)及耗能性能，從而達到在滿足使用功能要求和抗震性能要求的情況下節(jié)約鋼材的目的。
[Abstract]:Steel reinforced high strength concrete (HSRC) structure is a composite structure of high strength concrete with steel and steel bars, which can meet the needs of the development of modern engineering structures towards the direction of long span, high rise and heavy load. In this paper, the seismic behavior of HSRC frame columns under low cyclic loading is studied by means of experiment, theoretical analysis and finite element simulation analysis. The restoring force model and the effect of flange bolted nails on the seismic performance of HSRC frame columns are studied in this paper. In this paper, according to the project of Chongqing Construction Committee, "Application study of stiffened skeleton high-strength concrete structure" (No. 25 of City Science word 2004), the main research contents and results are summarized as follows: 1. 19 low-cycle concrete structures are added repeatedly. Experimental study on HSRC frame columns with concrete strength grade of 69.9 ~ 84.4 MPA under loading, The failure process and failure pattern of HSRC frame column are observed, the hysteretic curve of HSRC frame column is obtained, the results of skeleton curve, ductility ratio, energy consumption index and so on are obtained, and the steel content, axial compression ratio and hoop ratio are analyzed. The influence of shear span ratio and concrete strength on the seismic behavior of steel reinforced high strength concrete frame columns is discussed. 2 based on the experimental study, the low cycle inversion of steel reinforced high strength concrete frame columns is established by means of experimental fitting method. The model of restoring force under complex load. 3. The horizontal load-displacement curve of steel reinforced high strength concrete frame column subjected to low cycle repeated loading is analyzed by ANSYS. The theoretical analysis results are in good agreement with the experimental results. The influence of various parameters on the seismic behavior of HSRC frame columns is theoretically analyzed. 4 based on the experimental results, the bond cracking failure strength of HSRC compression and bending shear members is studied and a simplified formula for calculating bond cracking failure strength is derived. The calculation method of flexural strength is studied, and the safety of calculation formula of flexural strength of relevant code [8] is verified, and the relation between ductility coefficient and various parameters is studied. A simplified formula for ductility coefficient of HSRC compression-bending shear members is derived. (5) A comparative experimental study of five steel reinforced high strength concrete frame columns with low cycle repeated flange loading with the same studs is carried out. The influence of flange bolting on the failure pattern, hysteretic curve, skeleton curve, ductility coefficient and energy dissipation index of steel reinforced high strength concrete frame column is analyzed. The conclusion that flange bolting can effectively improve the seismic behavior and ductility of steel reinforced high strength concrete frame columns under the same conditions is obtained. 6 HSRC with different forms and numbers of studs by six low cycle repeated loading flanges Frame column contrast test, The reasonable pin arrangement of section steel flange is put forward. It is proposed that the ductility coefficient and energy dissipation performance of HSRC frame columns with low steel content can still reach or exceed that of HSRC frame columns with high steel content as long as the pins are properly arranged. In order to meet the use of functional requirements and seismic performance requirements in the case of saving steel.
【學位授予單位】：重慶大學
【學位級別】：博士
【學位授予年份】：2013
【分類號】：TU352.11;TU398.9

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