發(fā)布時(shí)間：2018-01-12 14:32

  本文關(guān)鍵詞：在役建筑增層可行性預(yù)判及工程應(yīng)用研究　出處：《山東農(nóng)業(yè)大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 在役建筑 增層改造 可靠性 預(yù)估 ANSYS 抗震

【摘要】：伴隨著工程技術(shù)的飛速發(fā)展和房地產(chǎn)事業(yè)的蒸蒸日上,現(xiàn)如今許多老舊在役建筑已經(jīng)成為經(jīng)濟(jì)發(fā)展和社會進(jìn)步的阻礙。對于老舊在役建筑處理不善,如拆除重建或廢棄閑置,很有可能會對周邊環(huán)境造成污染和安全隱患,引起不必要的損失。所以近年來國家政府和國內(nèi)外設(shè)計(jì)人員普遍關(guān)注老舊在役建筑的處理問題。在原有老舊在役建筑上進(jìn)行增層改造修葺一新,不僅可以改變原有建筑的外貌,還能夠增加建筑物的使用面積,改善建筑物的用途,達(dá)到1+12的效果,使得在役建筑物增層改造工程的經(jīng)濟(jì)效益明顯優(yōu)于重建工程。所以對一些在役建筑物進(jìn)行增層改造,不僅符合時(shí)代發(fā)展潮流,對我國經(jīng)濟(jì)長遠(yuǎn)發(fā)展亦具有重要意義。在役建筑增層改造目前還沒有形成系統(tǒng)性的法規(guī)和規(guī)范,而現(xiàn)如今我們對于在役建筑的增層改造還停留在設(shè)計(jì)院利用現(xiàn)有數(shù)據(jù),通過軟件進(jìn)行精確計(jì)算。這樣便耗費(fèi)了建設(shè)方大量時(shí)間和金錢,結(jié)果卻未必盡如人意。本文通過查閱國內(nèi)外大量文獻(xiàn),通過建筑物使用時(shí)間的長短,了解建筑物的具體使用情況,依托其原有地基承載力的提高,總結(jié)并提出了預(yù)判和預(yù)估方法,利用這種方法可以快速對框架結(jié)構(gòu)和砌體結(jié)構(gòu)進(jìn)行判斷,其能否進(jìn)行增層以及可增層數(shù)為多少進(jìn)行了科學(xué)合理的預(yù)估,另外對各個增層方法的優(yōu)缺點(diǎn)進(jìn)行了闡釋,并根據(jù)其需求為其選擇合理的增層方案以及簡單評價(jià)標(biāo)準(zhǔn),這樣一來便為建設(shè)方節(jié)約大量人力物力,增加效率。工程改造實(shí)例根據(jù)泰安市一框架結(jié)構(gòu)商業(yè)大廈增層,通過工程軟件PKPM對其進(jìn)行增層改造方案的設(shè)計(jì)與計(jì)算,應(yīng)用大型有限元軟件ANSYS對其進(jìn)行模態(tài)分析和地震作用下的動力時(shí)程分析,探究了增層前后結(jié)構(gòu)各項(xiàng)安全指標(biāo)變化和抗震規(guī)律的變化。本文主要的研究內(nèi)容有以下幾個方面:1、簡單介紹了增層改造的背景與意義;2、簡要概述了國內(nèi)外增層改造研究現(xiàn)狀;3、專業(yè)性的闡釋了可靠度理論的發(fā)展和在役建筑結(jié)構(gòu)可靠性鑒定流程;4、充分地探究了增層改造預(yù)估的可行性以及詳細(xì)地介紹現(xiàn)階段增層改造工程中常用的增層方案技術(shù)及其適用性;5、結(jié)合工程實(shí)例運(yùn)用PKPM結(jié)構(gòu)模塊對需要增層改造的原有結(jié)構(gòu)進(jìn)行PMCAD建模及SATWE內(nèi)力計(jì)算,得到增層前該結(jié)構(gòu)的相關(guān)數(shù)據(jù)和關(guān)系,并判斷該結(jié)構(gòu)是否適合增層,增層的富裕度進(jìn)行探究;6、根據(jù)探究的詳細(xì)情況和所設(shè)計(jì)的工況條件選擇合理的增層設(shè)計(jì)方案,對增層后結(jié)構(gòu)進(jìn)行重新建模分析;7、結(jié)合工程實(shí)例運(yùn)用ANSYS對增層改造的原結(jié)構(gòu)和增層改造后的結(jié)構(gòu)進(jìn)行模態(tài)分析和地震作用下的動力時(shí)程分析,對比分析增層對結(jié)構(gòu)產(chǎn)生的影響,以及如何處理;8、經(jīng)最終分析結(jié)果表明本增層設(shè)計(jì)方案改造后的結(jié)構(gòu)具有良好的穩(wěn)定性及抗震性能,其各項(xiàng)指標(biāo)均滿足現(xiàn)行規(guī)范要求。因此本增層改造預(yù)估及設(shè)計(jì)方案的探究對以后類似的增層改造工程具有一定參考價(jià)值。
[Abstract]:Along with the engineering technology and the rapid development of real estate industry on the upgrade, now many of the old buildings in service has become the economic development and social advancement. For the old buildings in service are not, such as the demolition and reconstruction of abandoned or idle, is likely to cause pollution and safety hazards on the surrounding environment, causing unnecessary the loss. So in recent years, the national government and the domestic and foreign designers attention old in dealing with the problem of existing building. In the original old buildings in service on increasing storey renovated, can not only change the appearance of the original building, but also to increase the use of the building area, improve the use of the building, to the effect of 1+12, which increased floor renovation project economic benefit is better than reconstruction in service buildings. So some buildings in service by layer transformation, not only accords with the development trend of the times, to Also plays an important role in the long-term development of China's economic growth in the transformation of the existing building layer. It has not formed a system of regulations and norms, and now we for increasing storey buildings in service is still in the design institute by using existing data, accurate calculation by software. This will cost a lot of time and money building the result is not satisfactory. In this paper, by consulting a large number of domestic and foreign literature, the use of the length of time through the building, the specific use of the original understanding of the building, improve the foundation bearing capacity based on the summary and put forward the anticipation and prediction method, this method can be used to quickly judge the frame structure and masonry structure, it can be by layers and layers of increasing many scientific and reasonable estimates, the advantages and disadvantages of each other by layer method are explained, and according to the needs of its choice Reasonable and simple reforming project evaluation standard, so that it is the construction side to save a lot of manpower and resources, increase the efficiency of engineering examples in Tai'an city. According to the framework of commercial building by layer, based on the engineering design and calculation software PKPM layer reconstruction scheme, using large-scale finite element software ANSYS modal analysis and under the action of earthquake on the time history analysis, to explore the changes of multilayer structure before and after the safety index changes and seismic rules. The main contents of this paper are as follows: 1, briefly introduces the background and significance of heightening reform; 2, a brief overview of the research status at home and abroad by the transformation layer; 3, professional interpretation of the reliability theory and the development of the existing building structure reliability appraisal process; 4, fully explored the feasibility and prediction of modifying layers in detail at this stage by layer modification The commonly used scheme by layer technology and its application in engineering; 5, combined with the engineering examples of the use of PKPM PMCAD modeling and SATWE module structure internal force calculation of the original structure need additional layer modification, gain layer before the relevant data structure and relationship, and determine whether the structure is suitable for increasing layer by layer research the degree of prosperity; 6, according to the details of the inquiry and the design of the working conditions of reasonable selection of the enhancement layer design of increasing layer structure after re modeling; 7, combined with the engineering examples of the use of the original structure of ANSYS adding layer and dynamic modal analysis and seismic time history analysis by structure layer after the transformation, comparative analysis of the influence of the structure of the layer increased, and how to deal with; 8, the final results of the analysis show that the increase of the structure layer design scheme is modified with stability and good seismic performance, and the indexes of the All of them meet the requirements of the current standard. Therefore, the exploration of the prediction and design of this increasing layer is of certain reference value to the similar project.

【學(xué)位授予單位】：山東農(nóng)業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TU746.3

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