本文選題：混合結(jié)構(gòu)　切入點：豎向變形差　出處：《武漢理工大學(xué)》2013年碩士論文

【摘要】：鋼框架-鋼筋混凝土混合結(jié)構(gòu)是一種能夠充分發(fā)揮不同材料和不同結(jié)構(gòu)性能的結(jié)構(gòu)體系,受力合理、抗震性能好,而在超高層建筑中經(jīng)常使用。但是隨著高度的不斷增高,不同豎向構(gòu)件的變形差異差異問題也逐漸凸顯出來。過大的豎向變形差異會對結(jié)構(gòu)的安全、適用性能受到影響,對結(jié)構(gòu)構(gòu)件造成破壞。因此,研究豎向變形差異具有十分重要意義。 本文從理論方面分析了豎向構(gòu)件變形差異產(chǎn)生的原因。對影響豎向變形差異的幾個主要因素：彈性壓縮、混凝土的收縮和徐變等詳細(xì)的概述。對高層結(jié)構(gòu)在豎向荷載作用下的結(jié)構(gòu)計算方法：整體結(jié)構(gòu)一次加載和模擬施工階段加載進(jìn)行了相關(guān)的理論推導(dǎo)。一次加載豎向構(gòu)件變形趨勢“底部小,頂部大”,變形逐漸累積；模擬施工階段加載變形趨勢“兩邊小,中間大”。 利用SAP2000有限元軟件進(jìn)行建模計算分析。分別考慮不同計算方法：整體結(jié)構(gòu)一次加載和模擬施工階段加載情況。在計算過過程中,將分別進(jìn)行了彈性壓縮變形、混凝土的收縮徐變以及核心筒超前施工等,豎向構(gòu)件的變形以及變形差的發(fā)展規(guī)律。計算結(jié)果表明：計算方法的不同得到的變形和變形差區(qū)別較大；混凝土的收縮徐變有利于減小變形差異；核心筒超前施工豎向構(gòu)件變形增大,但是變形差會減小等。 在豎向構(gòu)件變形差分析的基礎(chǔ)上,從結(jié)構(gòu)設(shè)計、施工措施和混凝土材料等三個方面出發(fā),對豎向變形差的控制措施提了一些建議。
[Abstract]:Steel frame-reinforced concrete hybrid structure is a kind of structure system which can give full play to different materials and different structural properties. It has reasonable force and good aseismic performance, but it is often used in super high-rise buildings. However, with the increasing of height, The problem of deformation difference of different vertical members is also becoming more and more obvious. Too large vertical deformation difference will affect the safety and applicability of the structure and damage the structural members. It is very important to study the difference of vertical deformation. In this paper, the causes of the deformation difference of vertical members are analyzed theoretically. The main factors affecting the difference of vertical deformation are elastic compression, elastic compression, elastic compression, elastic compression, elastic compression, elastic compression, and elastic compression. A detailed overview of shrinkage and creep of concrete. The calculation method of high-rise structure under vertical load: the theoretical derivation of integral structure under single loading and simulating construction stage loading. The deformation trend toward the component is "small at the bottom," Large top, gradual accumulation of deformation, simulation of construction stage loading deformation trend of "small on both sides, large in the middle". SAP2000 finite element software is used to model and analyze the model. Different calculation methods are taken into account: single load of the whole structure and simulation of the loading in the construction stage. In the course of calculation, elastic compression deformation is carried out separately. The shrinkage and creep of concrete and the advance construction of the core tube, the deformation of vertical members and the development law of deformation difference. The calculation results show that the difference of deformation and deformation difference between different calculation methods is great; The shrinkage and creep of concrete is beneficial to reduce the difference of deformation, and the deformation of vertical members in the core tube construction before construction increases, but the difference of deformation will decrease, etc. Based on the analysis of the deformation difference of vertical members, some suggestions on the control measures of vertical deformation difference are put forward from three aspects: structural design, construction measures and concrete materials.
【學(xué)位授予單位】：武漢理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU973.1

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