發(fā)布時間：2018-06-09 04:02

  本文選題：混凝土剪力墻 + 鋼梁��； 參考：《清華大學(xué)》2013年碩士論文

【摘要】：隨著經(jīng)濟建設(shè)的快速發(fā)展，鋼－混凝土組合結(jié)構(gòu)——這一適合我國國情的結(jié)構(gòu)形式在各個領(lǐng)域得到廣泛應(yīng)用，特別是在超高層結(jié)構(gòu)中，以鋼框架—核心筒為代表的組合結(jié)構(gòu)更是層出不窮。然而在國內(nèi)，對于超高層建筑中關(guān)鍵性的鋼梁—剪力墻節(jié)點研究卻并不多，國外可供參考的節(jié)點類型也有限。特別是對結(jié)構(gòu)整體抗震性能有重要影響的鋼梁—剪力墻節(jié)點抗拔性能研究更是缺乏。在前人研究基礎(chǔ)上，并結(jié)合實際工程實際，本文研發(fā)了新型鋼梁—混凝土剪力墻T型鉸接節(jié)點，并進(jìn)行了抗拔性能研究。主要研究工作包括： （1）調(diào)研和總結(jié)了國內(nèi)外組合結(jié)構(gòu)應(yīng)用現(xiàn)狀，鋼梁—混凝土剪力墻節(jié)點研究現(xiàn)狀及方法，提出了本文研究的思路和技術(shù)路線； （2）以某實際工程為背景，對其中關(guān)鍵的梁柱節(jié)點與墻梁節(jié)點進(jìn)行抗震性能試驗研究，對其滯回性能、延性、耗能能力、變形恢復(fù)能力等進(jìn)行探討，并進(jìn)行了有限元模擬及參數(shù)分析，對此類節(jié)點給出了設(shè)計建議； （3）設(shè)計了不同埋深、豎向配筋率、腹板栓釘個數(shù)及位置的六個鋼梁—混凝土剪力墻T型鉸接節(jié)點，進(jìn)行抗拔性能試驗研究。通過對試驗現(xiàn)象的觀察，給出了不同構(gòu)件的破壞特征；通過對承載力、不同位置處節(jié)點板翼緣與腹板及豎向鋼筋的應(yīng)力分析，研究了影響抗拔承載力的重要因素，并基本掌握其傳力機制，給出構(gòu)造建議； （4）利用通用有限元軟件MSC.MARC對試驗構(gòu)件進(jìn)行建模分析，研究了剪力墻及節(jié)點區(qū)鋼構(gòu)件局部應(yīng)力應(yīng)變特性；對帶栓釘進(jìn)行變參數(shù)分析，研究了栓釘尺寸及位置對節(jié)點承載力的影響。 （5）在試驗研究的基礎(chǔ)上，利用剛塑性假設(shè)和混凝土雙剪破壞理論，對腹板無栓釘構(gòu)件抗拔承載力進(jìn)行理論推導(dǎo)，給出了簡化計算公式，并與試驗結(jié)果進(jìn)行對比；對20個節(jié)點板腹板無栓釘構(gòu)件進(jìn)行有限元數(shù)值模擬，并將分析結(jié)果與公式計算結(jié)果對比；在此基礎(chǔ)上利用彈性地基梁等理論給出了發(fā)生節(jié)點板腹板屈服破壞的相關(guān)條件； 最后，，在總結(jié)全部成果的基礎(chǔ)上提出了進(jìn)一步研究的展望。
[Abstract]:With the rapid development of economic construction, the steel-concrete composite structure, which is suitable for China's national conditions, has been widely used in various fields, especially in super-high-rise structures. Steel frame-core tube as the representative of the composite structure is emerging in endlessly. However, in China, there are few researches on the key steel beam-shear wall joints in super high-rise buildings, and the types of connections available for reference abroad are also limited. Especially, the research on the pull-out performance of the steel beam-shear wall joints which have important influence on the seismic behavior of the whole structure is even less. On the basis of previous research and actual engineering practice, a new type of steel beam-concrete shear wall T-hinge joint is developed and its pull-out performance is studied. The main research work includes: 1) the present situation of application of composite structures at home and abroad, the present research status and methods of steel beam-concrete shear wall joints, the ideas and technical route of this paper are put forward. The key Liang Zhu joints and wall beam joints are tested for seismic performance. The hysteretic performance, ductility, energy dissipation capacity, deformation and recovery capacity are discussed, and finite element simulation and parameter analysis are carried out. The design suggestions for this kind of joints are given. (3) six T-type joints with different burying depth, vertical reinforcement ratio, number and position of web studs are designed, and the pull-out performance of T-joints is studied. Through the observation of the experimental phenomena, the failure characteristics of different members are given, and the important factors affecting the pull-out bearing capacity are studied through the stress analysis of the flange of the joint plate and the web plate and the vertical steel bar at different locations and bearing capacity. Finally, the author makes use of the general finite element software MSC.MARC to model and analyze the test members, studies the local stress-strain characteristics of shear walls and steel members in the joint area, and analyzes the variable parameters of the steel members with studs. The influence of pin size and location on the bearing capacity of joints is studied. On the basis of experimental study, the pull-out capacity of web unbolted members is derived by using rigid-plastic hypothesis and concrete double shear failure theory. The simplified calculation formula is given and compared with the experimental results, and the finite element numerical simulation of 20 node plate web members is carried out, and the analysis results are compared with the formula results. On the basis of this, using the theory of elastic foundation beam and so on, the related conditions for the yield failure of the web of the joint plate are given, and finally, the prospect of further research is put forward on the basis of summing up all the results.
【學(xué)位授予單位】：清華大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU398.9

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