本文關(guān)鍵詞：雙型鋼混凝土轉(zhuǎn)換梁及其節(jié)點的抗震性能的研究　出處：《湖南大學》2014年博士論文　論文類型：學位論文

  更多相關(guān)文章： 雙型鋼混凝土 抗彎承載力 彎曲試驗 轉(zhuǎn)換節(jié)點 抗剪機理 延性 滯回曲線 低周反復荷載 振動臺實驗 性能分析 構(gòu)造措施

【摘要】：本文以廣東某高層建筑為工程背景，針對大跨度轉(zhuǎn)換結(jié)構(gòu)，提出了雙型鋼混凝土轉(zhuǎn)換梁及其節(jié)點的構(gòu)造新組合形式，解決了工程設計中面臨的難題。雙型鋼混凝土轉(zhuǎn)換梁是由外包鋼筋骨架、混凝土和組合型鋼等三部分組成，其中組合型鋼由兩根工字鋼通過綴板連接而成。為了施工方便，上部被轉(zhuǎn)換部型鋼柱與雙型鋼轉(zhuǎn)換梁采用了端板螺栓連接的方式。為明確雙型鋼混凝土轉(zhuǎn)換梁及其節(jié)點的各項抗震性能指標，本文從構(gòu)件、節(jié)點、結(jié)構(gòu)和構(gòu)造等四方面開展研究工作。 第一方面，本文通過6組雙型鋼混凝土梁的四點加載靜力彎曲試驗，研究其箍筋率、型鋼翼緣尺寸、型鋼間距、縱筋配筋率和銷釘布置對雙型鋼混凝土梁的開裂荷載和極限荷載的影響。研究發(fā)現(xiàn)雙型鋼混凝土梁具有較高的承載能力和較好的延性。文中給出了雙型鋼混凝土梁的抗彎承載力計算公式。根據(jù)試驗數(shù)據(jù)并結(jié)合疊加設計原理計算數(shù)據(jù)，修正了約束混凝土的抗彎承載力以及公式的整體性。本文將雙型鋼混凝土梁的短期效應剛度分成三部分：鋼筋混凝土剛度、雙型鋼剛度和約束混凝土剛度。提出了短期效應剛度及相應的撓度計算公式。通過分析屈服彎矩和極限彎矩的計算公式，推出雙型鋼混凝土梁的延性系數(shù)（構(gòu)件延性和截面延性）計算公式。 第二方面，通過兩個雙型鋼混凝土梁式轉(zhuǎn)換節(jié)點豎向和水平荷載作用下的低周反復荷載試驗，研究了節(jié)點的破壞形態(tài)、承載能力、剛度、滯回特性、延性、耗能能力及關(guān)鍵位置鋼筋和型鋼的應變等性能。試驗結(jié)果反應出雙型鋼混凝土轉(zhuǎn)換梁柱節(jié)點符合抗震設計關(guān)于轉(zhuǎn)換結(jié)構(gòu)的“強梁強柱，更強節(jié)點”和“強轉(zhuǎn)換層，弱框架層”兩個破壞機制，具有良好的轉(zhuǎn)換結(jié)構(gòu)的特性。根據(jù)試驗數(shù)據(jù)和有限元分析結(jié)果，本章研究了雙型鋼混凝土梁式轉(zhuǎn)換節(jié)點的抗剪機理，并提出了其抗剪承載力計算公式。通過對比“日本規(guī)范”、我國“JGJ規(guī)范”和“YB規(guī)范”的抗剪承載力計算值，表明本章提出的節(jié)點抗剪承載力計算公式的合理性。另外，本章還對被轉(zhuǎn)換型鋼柱的“端板螺栓連接”的設計方法做了比較和歸納。 第三方面，通過1:35縮尺模型進行單向、雙向和三向地震作用下振動臺試驗，研究雙型鋼混凝土轉(zhuǎn)換梁在結(jié)構(gòu)中抗震性能。振動臺實驗的結(jié)果表明雙型鋼混凝土梁式轉(zhuǎn)換結(jié)構(gòu)具有三大破壞機制。通過性能分析，雙型鋼混凝土梁式轉(zhuǎn)換結(jié)構(gòu)在多遇地震、設防烈度地震和罕遇地震均能滿足設定的各項性能指標，表現(xiàn)出較好的變形能力和抗震性能；通過反應譜法、彈塑性時程分析法、彈塑性靜力推覆法和多水準能力譜法研究了雙型鋼混凝土轉(zhuǎn)換梁及其節(jié)點的應力、變形及其損傷指標，結(jié)果顯示，，雙型鋼混凝土轉(zhuǎn)換梁及其節(jié)點具有較好抗震性能，更值得一提的是，其抗剪性能優(yōu)越。 第四方面，結(jié)合我國現(xiàn)行規(guī)范、實驗數(shù)據(jù)和現(xiàn)場施工情況，給出了雙型鋼混凝土轉(zhuǎn)換梁及其節(jié)點的材料、構(gòu)造和施工方面的建議。在材料中，結(jié)合我國現(xiàn)行的幾本型鋼規(guī)范給出雙型鋼混凝土轉(zhuǎn)換梁及其節(jié)點的各種組成材料的規(guī)定。在構(gòu)造中，給出了雙型鋼混凝土構(gòu)件應該遵循的一般構(gòu)造和具有自身特點的構(gòu)造設計。在施工中，總結(jié)了現(xiàn)場施工過程的工藝。
[Abstract]:In this paper, a high-rise building in Guangdong as the engineering background, for a large span transfer structure, puts forward the structure of the new combination of two steel reinforced concrete beams and joints, to solve the problem of engineering design. Two steel reinforced concrete transfer beam is a reinforced concrete skeleton, and the combination of steel and other three parts among them, combined by two steel I-beam through batten plates connected together. In order to facilitate the construction of the upper converted steel column and double steel girder with bolted end plate connection way. For the definition of steel reinforced concrete transfer beam and node seismic performance indexes, this paper from the member nodes, carry out four aspects of research and structure.
First, based on the four point bending test under static load the 6 pairs of steel reinforced concrete beam, study the stirrup ratio of flange, steel, steel spacing, effect of longitudinal reinforcement ratio and the pin layout of double steel concrete beams cracking load and ultimate load. The study found that two steel reinforced concrete the beam has high bearing capacity and good ductility. Given two steel reinforced concrete beam flexural capacity calculation. According to the experimental data and calculated data according to the superposition principle of design, the overall correction of bending bearing capacity formula and confined concrete. The short-term effect of double reinforced concrete beams the stiffness is divided into three parts: reinforced concrete steel double stiffness, stiffness and stiffness of confined concrete is proposed. The calculation formula of short-term effects of stiffness and the corresponding calculation formula of deflection. Through the analysis of the yield moment and ultimate moment, push The formula for calculating the ductility coefficient (ductility and cross section ductility) of a double type steel concrete beam.
Second, through two pairs of steel reinforced concrete beam type conversion function node of vertical and horizontal loads under low cyclic loading test, failure modes of the joints, bearing capacity, stiffness, hysteretic behavior, ductility, energy dissipation capacity and strain properties of the key position of steel and steel. The test results reflect double steel reinforced concrete transfer beam column joints with seismic design on the transfer structure "strong column beam and stronger joint" and "strong weak conversion layer, frame layer two failure mechanism, has the characteristics of good conversion structure. According to the test data and the results of finite element analysis, this chapter studies the double steel reinforced concrete beam type conversion joint shear mechanism and the calculation formula of the shear bearing capacity is proposed. By comparing the" Japanese norms ", China's" JGJ specification "and" YB specification "for calculating the shear strength values show that this chapter proposes anti node The calculation formula of shear bearing capacity is reasonable. In addition, this chapter also compares and summarizes the design method of "end plate bolt connection" of converted steel columns.
Third, through the 1:35 scale model of one-way, two-way and three earthquake shaking table test on two steel reinforced concrete transfer beam structure in seismic performance. The experimental results show that the double vibration of steel reinforced concrete beam type transfer structure with three failure mechanism. Through the performance analysis, two steel reinforced concrete beams transfer structure in the earthquake fortification intensity, earthquake and rare earthquake can meet the performance indicators set, show the deformation capacity and good seismic performance; the response spectrum method, the elastic-plastic time history analysis method, the stress of the steel reinforced concrete transfer beam and double node static pushover multi level method and capacity spectrum method, the deformation and the damage index, results show that the double steel reinforced concrete transfer beam and joint has good seismic performance, it is worth mentioning that the shear performance is superior.
Fourth, according to China standard, experimental data and site construction conditions, given two steel reinforced concrete transfer beam and joint material, construction and construction suggestions. In the material, combined with a variety of provisions in China a few of the current standard of steel are two steel reinforced concrete transfer beam and the composition of the material node in construction, the double steel reinforced concrete members should follow the general structure and structural design. With its own characteristics in construction, summarizes the process of the construction process.

【學位授予單位】：湖南大學
【學位級別】：博士
【學位授予年份】：2014
【分類號】：TU398.9;TU352.11

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本文編號：1438222