本文選題：高大模板支撐體系 + 承載力穩(wěn)定性��； 參考：《安徽建筑大學(xué)》2015年碩士論文

【摘要】：隨著我國(guó)國(guó)民經(jīng)濟(jì)水平的不斷發(fā)展,土木工程施工工藝水平得以持續(xù)的提高。造型復(fù)雜化以及功能多樣化的發(fā)展目標(biāo),已經(jīng)成為現(xiàn)代高層建筑發(fā)展趨勢(shì)。在建筑工程中,利用高大模板支撐體系施工的現(xiàn)澆混凝土結(jié)構(gòu)頻繁出現(xiàn),且在工程中得以廣泛的推廣應(yīng)用。鋼管腳手架支撐體系被多次應(yīng)用在高支模體系中,但高支模內(nèi)架支撐體系承載力穩(wěn)定性是施工的難題。與普通模板工程支撐體系相比,高大模板工程支撐體系的特點(diǎn)是:當(dāng)前在高支模施工技術(shù)中,關(guān)于此類模板工程的施工技術(shù)規(guī)程相對(duì)較為缺乏,而且關(guān)于鋼管腳手架模板支撐體系的架體設(shè)計(jì),以及施工規(guī)范相對(duì)不完備,僅對(duì)架體中斜桿提出了相關(guān)構(gòu)造要求,并未作設(shè)計(jì)深化計(jì)算要求。施工過程中很大程度上依靠工程經(jīng)驗(yàn),再加上由于地基基礎(chǔ)下沉,以及設(shè)計(jì)計(jì)算和施工管理措施不當(dāng)?shù)仍?致使架體支撐系統(tǒng)失穩(wěn)導(dǎo)致的倒塌而發(fā)生重大安全事故并不罕見。因此,如何有效的預(yù)防高支模內(nèi)架承載力失穩(wěn)是施工中的關(guān)鍵技術(shù)問題之一。本文結(jié)合某工程實(shí)例現(xiàn)場(chǎng)調(diào)研,并且借助有限元分析軟件SAP2000,進(jìn)行了以下幾個(gè)方面的研究工作:(1)整理了國(guó)內(nèi)外研究人員對(duì)扣件式鋼管腳手架以及模板支架工程的研究現(xiàn)狀,簡(jiǎn)要分析了高大模板扣件式鋼管內(nèi)架承載力失穩(wěn)的成因和破壞特征。(2)結(jié)合規(guī)范推薦的架體桿件受力計(jì)算方法,全面對(duì)高大模板內(nèi)架支撐體系的極限受壓承載力進(jìn)行理論分析。(3)結(jié)合某高支模工程實(shí)例,從施工要求以及技術(shù)保證條件、施工計(jì)劃等各個(gè)方面進(jìn)行施工部署計(jì)算分析,是在實(shí)際工程中的具體實(shí)施應(yīng)用。(4)針對(duì)該工程高大模板支撐體系的縱距、橫距、步距、掃地桿的高度、豎直桿超出頂端長(zhǎng)度、水平和豎向剪刀撐加強(qiáng)層的間距等構(gòu)造因素的變化,分析研究這些因素對(duì)幾何尺寸體系不變扣件式鋼管模架穩(wěn)定承載力產(chǎn)生的影響。(5)結(jié)合有限元軟件和現(xiàn)場(chǎng)數(shù)據(jù)監(jiān)測(cè)的結(jié)果計(jì)算分析,得到了保證高大模板扣件式鋼管內(nèi)架支撐體系的承載力穩(wěn)定性條件,給出了具體設(shè)計(jì)和施工中注意的問題和合理化建議。(6)分析高大模板扣件式鋼管內(nèi)架支撐體系中,各種構(gòu)造因素對(duì)承載力穩(wěn)定性的影響。在工程施工環(huán)節(jié)中,應(yīng)采取積極有效的措施并嚴(yán)格按照相關(guān)規(guī)范規(guī)程執(zhí)行,以確保施工安全。
[Abstract]:With the development of our national economy, the construction technology level of civil engineering has been continuously improved. The development target of complex modeling and diversified functions has become the development trend of modern high-rise buildings. In building engineering, cast-in-place concrete structures constructed with tall formwork support system appear frequently and are widely used in engineering. Steel tube scaffolding bracing system has been used in high support formwork system for many times, but the stability of bearing capacity of high support mould inner frame bracing system is a difficult problem in construction. Compared with ordinary formwork support system, the characteristics of tall formwork support system are: at present, in the construction technology of high supporting formwork, the construction technical specification of this kind of formwork is relatively lacking. Moreover, the frame design of steel tube scaffolding formwork bracing system and the construction code are relatively incomplete. Only the relevant structural requirements for the inclined bar in the frame body are put forward, but the design deepening calculation requirements are not made. In the process of construction, it is not uncommon to rely on engineering experience to a great extent, and because of the subsidence of foundation foundation, the improper design, calculation and construction management measures, and so on, which results in the collapse of frame bracing system. Therefore, how to effectively prevent the bearing capacity instability of high-support mould is one of the key technical problems in construction. In this paper, with the help of the finite element analysis software SAP2000, the research status of fastener steel tube scaffolding and formwork scaffold is sorted out in this paper, which is based on the field investigation of a project case, and the following research work is done in the following aspects: (1) domestic and foreign researchers' research status of fastener type steel tube scaffolding and formwork support. This paper briefly analyzes the cause of failure of bearing capacity of tall formwork fastener steel tube and its failure characteristics. This paper makes a theoretical analysis on the ultimate compressive bearing capacity of the support system of the inner frame of the tall formwork in an all-round way. Combined with an example of a high-supported formwork project, the construction deployment calculation and analysis are carried out from various aspects, such as construction requirements, technical guarantee conditions, construction plan, and so on. It is the concrete implementation in the actual project. 4) aiming at the vertical distance, the transverse distance, the step distance, the height of the sweeping pole and the vertical bar exceeding the top length of the support system of the tall formwork of the project, Changes in structural factors, such as horizontal and vertical shear braces, spacing between strengthened layers, The influence of these factors on the stable bearing capacity of the steel tube die frame with invariable fastener is analyzed. The results of finite element software and field data monitoring are calculated and analyzed. The stability condition of bearing capacity of tall formwork fastener type steel tube inner frame bracing system is obtained, and the problems that should be paid attention to in the design and construction and the reasonable suggestion .6) are given to analyze the high formwork fastener steel tube inner frame bracing system. The influence of various structural factors on the stability of bearing capacity. In order to ensure construction safety, active and effective measures should be taken and carried out strictly in accordance with relevant codes and regulations.
【學(xué)位授予單位】：安徽建筑大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU755.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前7條

1 李大華;林東良;陳艷梅;;某大劇院工程高大模板支撐體系施工方案研究[J];安徽建筑工業(yè)學(xué)院學(xué)報(bào)(自然科學(xué)版);2011年04期

2 胡長(zhǎng)明;梅源;董攀;張小勇;;扣件式高大模板支撐體系穩(wěn)定承載力折減系數(shù)的分析與研究[J];工業(yè)建筑;2010年02期

3 胡長(zhǎng)明;梅源;王雪艷;閆鑫;;構(gòu)造因素對(duì)高大模板支撐體系穩(wěn)定承載力影響的研究[J];建筑技術(shù);2009年02期

4 余宗明,王亮;腳手架及模板支撐架安全應(yīng)用的技術(shù)關(guān)鍵[J];建筑施工;2004年01期

5 林東良;李大華;;某大劇院工程高大模板支撐體系施工方案研究[J];山西建筑;2012年01期

6 杜榮軍;腳手架結(jié)構(gòu)的穩(wěn)定承載能力[J];施工技術(shù);2001年04期

7 曾凡奎;李昌華;李新聞;胡長(zhǎng)明;;扣件式鋼管高大模板支架現(xiàn)場(chǎng)試驗(yàn)研究[J];施工技術(shù);2009年08期

，

本文編號(hào)：1804061