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  本文關鍵詞： HRB500E 梁柱節(jié)點 抗震性能 反復荷載 單調(diào)荷載　出處：《華中科技大學》2015年碩士論文　論文類型：學位論文

【摘要】：隨著我國經(jīng)濟的快速發(fā)展和建筑形式的多樣化,普通鋼筋在資源和環(huán)境等的約束下,已經(jīng)難以滿足我國土木工程領域新形勢的發(fā)展需求,推廣應用高強鋼筋成為了歷史的必然選擇。由于我國是全球地震活動強烈與地震災害嚴重的國家之一,建筑結構抗震設計已成為結構設計的關鍵內(nèi)容,其中對于大量建筑所采用的鋼筋混凝土框架結構,其梁柱節(jié)點是決定結構抗震性能的關鍵部位。HRB500E是我國目前針對現(xiàn)有國情開發(fā)的一種新型高強抗震鋼筋,對配置HRB500E高強抗震鋼筋的鋼筋混凝土梁柱節(jié)點的試驗研究還很缺乏。因此,本文采用試驗和有限元分析兩種研究方法對配置HRB500E的鋼筋混凝土梁柱中節(jié)點分別在單調(diào)和反復荷載下的受力性能進行深入研究,為在實際工程中推廣應用HRB500E高強抗震鋼筋提供試驗和理論依據(jù)。首先,本文參照現(xiàn)行相關規(guī)范設計了4個鋼筋混凝土梁柱中節(jié)點足尺試件,其中2個配置HRB500E,另2個配置HRB335,并對這些試件進行了低周往復加載試驗。對配置HRB500E的試件在裂縫發(fā)展、破壞形態(tài)、滯回特性、耗能、延性和剛度退化等方面與等體積配置HRB335的試件作了對比分析。結果表明:按照我國現(xiàn)行規(guī)范設計的配置HRB500E的鋼筋混凝土梁柱中節(jié)點與等體積配置HRB335的鋼筋混凝土梁柱中節(jié)點存在著類似的破壞現(xiàn)象,同時兩者均具有良好的延性。但配置HRB500E的鋼筋混凝土梁柱中節(jié)點有更高的承載力、變形能力和耗能能力,表現(xiàn)出了良好的抗震性能。其次,對參照我國現(xiàn)行相關規(guī)范設計的6個鋼筋混凝土梁柱中節(jié)點足尺試件進行了單調(diào)和反復荷載試驗。其中2個配置HRB500E,2個配置HRB335,2個配置HRB600。每種相同鋼筋型號的試件設計參數(shù)完全相同,一個施加低周循環(huán)往復荷載,另一個施加單調(diào)反對稱荷載。研究加載模式的差別對鋼筋混凝土梁柱中節(jié)點的影響,并將配置HRB500E的試件與配置HRB600、HRB335的試件進行各方面的對比,進一步考察了應用HRB500E鋼筋的技術優(yōu)勢。最后,本文借助ABAQUS有限元分析軟件對受單調(diào)荷載的鋼筋混凝土梁柱中節(jié)點試件建立相應的有限元模型,并與試驗結果進行詳細對比分析,驗證了有限元模型的有效性,在此基礎上進行了相關參數(shù)分析。通過重點研究節(jié)點核心區(qū)配箍率和軸壓比與節(jié)點區(qū)域鋼筋應變的關系,全面研究了節(jié)點核心區(qū)箍筋的作用以及軸壓比的具體影響規(guī)律。
[Abstract]:With the diversification of China's rapid economic development and construction in the form of ordinary steel in resources and environmental constraints, has been difficult to meet the development needs of the new situation in China in the field of civil engineering, popularization and application of high strength steel has become the inevitable choice of history. Because China is one of the global seismicity and earthquake disaster seriously country, seismic design of building structure has become the key content of the structural design, the reinforced concrete frame structure with a large building, the beam column joint is.HRB500E key parts determine the structural seismic performance is our current existing conditions for the development of a new type of high strength reinforced, experimental study on reinforced concrete beam column joints the configuration of HRB500E high strength reinforced is still lacking. Therefore, this paper using experimental and finite element analysis of reinforced two research methods of HRB500E mixed configuration Concrete beam columns node respectively under monotonic and cyclic loading by in-depth study of performance for HRB500E application in practical engineering to provide experimental and theoretical basis of high strength reinforced. First of all, according to the current standard design of 4 full-scale reinforced concrete beam columns joint specimens, including 2 configuration HRB500E the other 2 configurations of HRB335, and the low cyclic loading tests on the specimens. The failure pattern of the specimen in the crack development, configuration HRB500E, hysteretic characteristics, ductility and energy dissipation, stiffness degradation and volume configuration of HRB335 specimens were analyzed. The results showed that: according to the reinforced concrete our current standard beam columns node design of the configuration of the HRB500E reinforced concrete Liang Zhuzhong nodes with equal volume configuration HRB335 exist the phenomenon is similar, and both have good ductility. But the allocation of HRB5 Reinforced concrete beam columns node 00E has higher bearing capacity, deformation and energy dissipation capacities, showed good seismic performance. Secondly, according to the related regulations of our country design of 6 reinforced concrete beam columns joint full-scale specimens of monotonic and cyclic loading test. The 2 configuration HRB500E the 2 configuration HRB335,2 configuration HRB600. each kind of the same type reinforced specimen design parameters are exactly the same, a week under low cyclic loading, another applied monotonic antisymmetric loading. Influence of loading mode difference of RC Liang Zhuzhong node, and the specimen and the HRB600 configuration of HRB500E, compare the the HRB335 specimens, further investigated the technical advantages used HRB500E steel. Finally, the test node of reinforced concrete beam columns under monotonic load by means of the finite element analysis software ABAQUS The establishment of a corresponding finite element model, and makes a detailed comparative analysis and experimental results verify the validity of the finite element model, based on the analysis of relevant parameters. Through the research on the core zone of the joint stirrup ratio and axial compression ratio and the relationship between regional node reinforcement strain, a comprehensive study of the specific influence of axis the pressure ratio of stirrup joint core role.

【學位授予單位】：華中科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TU375.1

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1 馬健;配置HRB500E鋼筋混凝土梁柱中節(jié)點試驗及有限元研究[D];華中科技大學;2015年

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本文編號：1550264