本文選題：預制裝配式 + 型鋼混凝土梁�。� 參考：《蘇州科技大學》2017年碩士論文

【摘要】：型鋼混凝土結(jié)構(gòu)以其優(yōu)越的力學性能備受建筑行業(yè)重視。然而其施工難度大,成本高,一直無法在工程中大規(guī)模推廣。針對這一情況,本課題組提出預制裝配式型鋼混凝土(Prefabricated Steel Reinforced Concrete,簡稱PSRC)梁的概念。結(jié)合傳統(tǒng)型鋼混凝土梁與混凝土疊合梁的特點,將原本一次澆筑的構(gòu)件分預制腹板與現(xiàn)澆翼緣兩次澆筑,形成一種新型的結(jié)構(gòu)形式。根據(jù)預制腹板截面形式的不同可分為U型、V型及矩型腹板PSRC梁。本文針對預制U型截面腹板PSRC梁開展低周反復荷載試驗及理論分析,主要完成了以下研究工作:(1)針對三根預制U型截面腹板PSRC梁開展低周反復荷載試驗,分析剪跨比及現(xiàn)澆部分混凝土強度對PSRC梁破壞特征、荷載-撓度滯回曲線、骨架曲線、應(yīng)變規(guī)律、延性、變形恢復能力、強度衰減規(guī)律、剛度退化規(guī)律及耗能性能等抗震性能的影響。(2)與同期進行的兩根相同設(shè)計參數(shù)的預制V型截面腹板PSRC梁及預制矩型截面腹板PSRC梁進行試驗現(xiàn)象及數(shù)據(jù)對比,分析預制部分不同的截面形式對PSRC梁承載力及抗震性能的影響。(3)結(jié)合試驗現(xiàn)象及數(shù)據(jù),通過理論推導建立了PSRC梁受彎承載力及撓度計算公式。(4)結(jié)合理論推導與試驗數(shù)據(jù),建立了PSRC梁荷載-撓度三折線骨架曲線理論模型,并以此進行了擴大參數(shù)分析。
[Abstract]:Steel reinforced concrete (SRC) structure has attracted much attention of the construction industry for its superior mechanical properties. However, its construction is difficult, high cost, has been unable to be widely used in the project. In view of this situation, the concept of prefabricated steel reinforced concrete (PSRCc) beam is proposed. Combined with the characteristics of the traditional steel reinforced concrete beam and concrete composite beam, the members originally cast at one time are divided into precast web plate and cast-in-place flange twice to form a new structure form. According to the different sections of prefabricated web, it can be divided into U-shaped, V-shaped and rectangular web PSRC beams. In this paper, low cycle repeated load test and theoretical analysis are carried out for prefabricated U-section web PSRC beams. The following research work is mainly completed: 1) low cycle repeated load tests on three prefabricated U-section web PSRC beams are carried out. The failure characteristics of PSRC beam, load-deflection hysteresis curve, skeleton curve, strain law, ductility, deformation recovery ability and strength attenuation law of PSRC beams caused by shear span ratio and cast-in-situ concrete strength are analyzed. The effect of stiffness degradation law and energy dissipation performance on seismic performance is compared with two precast V-section web PSRC beams with the same design parameters and prefabricated rectangular web PSRC beams with the same design parameters. This paper analyzes the influence of different sections of precast parts on the bearing capacity and seismic behavior of PSRC beams. It combines the experimental phenomena and data, and establishes the formula for calculating the flexural capacity and deflection of PSRC beams by theoretical derivation, combining with the theoretical derivation and test data. The theoretical model of the load-deflection three-fold skeleton curve of PSRC beam is established, and the extended parameter analysis is carried out.
【學位授予單位】：蘇州科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TU317;TU398.9

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本文編號：2009578