本文選題：預(yù)制裝配式結(jié)構(gòu) + RCS混合結(jié)構(gòu)��； 參考：《江蘇科技大學(xué)》2014年碩士論文

【摘要】：混凝土柱-鋼梁混合結(jié)構(gòu)（reinforcedconcretecolumn-steelbeam，RCS）充分發(fā)揮了鋼與混凝土兩種材料各自的優(yōu)點，是一種可持續(xù)發(fā)展的結(jié)構(gòu)體系，其綜合性能要優(yōu)于傳統(tǒng)鋼筋混凝土框架結(jié)構(gòu)和鋼框架結(jié)構(gòu)，被稱為“低成本高效率”的結(jié)構(gòu)形式。將這種體系應(yīng)用到預(yù)制裝配式當(dāng)中，發(fā)展裝配式混合結(jié)構(gòu)體系，，這對于改變我國粗放型建筑施工作業(yè)，順應(yīng)建筑產(chǎn)業(yè)化發(fā)展趨勢，無疑具有重要的經(jīng)濟和社會意義。為充分發(fā)揮混合結(jié)構(gòu)（RCS）體系的優(yōu)點，本文結(jié)合削弱外伸節(jié)點的特點和耗能減震技術(shù)的研究，提出了3種不同的干作業(yè)螺栓連接方式混合節(jié)點。 為了研究全裝配式RCS混合結(jié)構(gòu)節(jié)點的抗震性能，根據(jù)提出的3種不同的干作業(yè)螺栓連接混合節(jié)點，通過擬靜力試驗，分別對節(jié)點構(gòu)件的破壞特征、破壞機理以及承載能力、延性和耗能能力等抗震性能進行了試驗研究。研究結(jié)果表明：（1）結(jié)合鋼結(jié)構(gòu)削弱外伸梁端節(jié)點的理念，將塑性鉸的位置從梁端外移到削弱處，能避免塑性鉸對核心區(qū)的不利影響，實現(xiàn)強柱弱梁的抗震設(shè)計要求；（2）采用單蓋板連接的鋼梁拼接節(jié)點，其耗能性能不如雙蓋板連接的鋼梁拼接節(jié)點；（3）采用無箍筋的鋼構(gòu)套構(gòu)造，節(jié)點核心區(qū)具有較高的承載能力和良好的耗能性能；（4）蓋板拼接節(jié)點的滯回曲線呈Z字型，反映出存在較大滑移的影響；（5）外伸端板的半剛性連接節(jié)點，其滯回曲線呈紡錘形，端板屈曲能較好地耗散能量，具有良好的抗震性能；（6）蓋板內(nèi)側(cè)設(shè)置摩擦銅片后，能起到很好的耗能效果；通過合理設(shè)計，震后破損的構(gòu)件還可能實現(xiàn)修復(fù)和替換功能。 在試驗研究基礎(chǔ)上，結(jié)合試驗的破壞特征，使用非線性連接單元，建立用于框架結(jié)構(gòu)分析的耗能拼接節(jié)點的彎矩—轉(zhuǎn)角模型，對該RCS混合結(jié)構(gòu)耗能節(jié)點進行數(shù)值模擬。通過對比可以發(fā)現(xiàn)，數(shù)值模擬曲線和試驗曲線基本一致，因此，可以利用該連接單元模擬實際的摩擦耗能拼接節(jié)點。 為了研究全裝配式RCS混合結(jié)構(gòu)節(jié)點耗能對框架結(jié)構(gòu)整體抗震性能影響，利用SAP2000建立普通框架結(jié)構(gòu)和帶摩擦耗能節(jié)點的框架結(jié)構(gòu)，進行了模態(tài)分析，用位移控制法在兩種加載模式下進行靜力彈塑性推覆分析，研究表明：連接的剛度會影響結(jié)構(gòu)的低階自振周期，但是對高階模態(tài)影響很小；采用耗能節(jié)點的全裝配式RCS混合結(jié)構(gòu)能夠有效減少底部受力，表現(xiàn)出較好的延性；結(jié)構(gòu)的層位移角都符合抗震規(guī)范的要求。
[Abstract]:Concrete column-steel beam composite structure (RCSs) gives full play to the advantages of both steel and concrete materials, and is a kind of structure system of sustainable development. Its comprehensive performance is better than that of traditional reinforced concrete frame structure and steel frame structure. It is called "low cost and high efficiency" structure form. It is of great economic and social significance to apply this system to the prefabricated assembly and develop the prefabricated hybrid structure system, which is of great economic and social significance for changing the extensive construction work and conforming to the development trend of building industrialization. In order to give full play to the advantages of hybrid structure (RCSs) system, combined with the characteristics of weakening outstretched joints and the study of energy dissipation technology, three different types of dry-working bolted joints are proposed. In order to study the seismic behavior of fully assembled RCS hybrid structure joints, according to the three kinds of different dry working bolted joints, the failure characteristics, failure mechanism and bearing capacity of the joints were tested by pseudo-static test. The seismic performance such as ductility and energy dissipation capacity are studied experimentally. The research results show that combining with the idea that steel structure weakens the end joints of outstretched beams, the position of plastic hinge is moved from the end of beam to the place of weakening, which can avoid the adverse effect of plastic hinge on the core region and meet the seismic design requirements of strong column and weak beam. (2) the energy dissipation performance of the steel beam splicing joint with single cover plate is lower than that of the steel beam splicing joint with double cover plate. The joint is constructed with steel jacket without stirrups, and the core area of the joint has higher bearing capacity and better energy dissipation performance. (4) the hysteretic curve of the joint of cover plate is Z shape, which reflects that there is a great influence of slip on the semi-rigid connection joint with extended end plate. The hysteretic curve of the hysteretic joint is spindle-shaped, and the end-plate buckling can dissipate energy well and has good seismic performance. 6) the friction copper plate on the inner side of the cover plate can play a good energy dissipation effect, and the damaged components may be repaired and replaced by reasonable design. On the basis of experimental research and combined with the failure characteristics of the test, the moment-rotation model of the energy dissipation joint used in the analysis of frame structure is established by using nonlinear connection element, and the numerical simulation of the energy dissipation node of the RCS hybrid structure is carried out. By comparison, it is found that the numerical simulation curve and the experimental curve are basically the same. Therefore, the connection element can be used to simulate the actual friction energy dissipation joints. In order to study the effect of energy dissipation on the whole seismic performance of frame structure with fully assembled RCS hybrid structure, the general frame structure and the frame structure with friction energy dissipation joint are established by SAP2000, and the modal analysis is carried out. The static elastic-plastic nappe analysis is carried out under two loading modes by using the displacement control method. The results show that the stiffness of the connection will affect the low-order natural vibration period of the structure, but it has little effect on the high-order modes. The fully assembled RCS hybrid structure with energy-dissipation joints can effectively reduce the stress at the bottom and show good ductility, and the displacement angles of the structure all meet the requirements of seismic code.
【學(xué)位授予單位】：江蘇科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TU352.11;TU398.9

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相關(guān)期刊論文 前2條

1 許勇;劉波;張季超;陳原;楊作用;王可怡;;新型裝配整體式混凝土結(jié)構(gòu)主次梁節(jié)點試驗研究[J];工業(yè)建筑;2009年08期

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