單層磚柱廠房震害分析及破壞機(jī)理研究
發(fā)布時(shí)間:2018-07-16 13:19
【摘要】:新中國成立以來,我國工業(yè)化進(jìn)程持續(xù)發(fā)展。而單層磚柱廠房由于其造價(jià)低廉,施工方便,材料易獲得,所以至今仍廣泛應(yīng)用于我國中小型工業(yè)企業(yè)的生產(chǎn)用房、倉庫以及其他輔助用房。自1949年建國以來,我國對(duì)建筑結(jié)構(gòu)抗震設(shè)防和抗震設(shè)計(jì)就十分重視,尤其是邢臺(tái)地震發(fā)生以來,我國頒布了數(shù)次抗震設(shè)計(jì)規(guī)范。歷屆抗震設(shè)計(jì)規(guī)范中都考慮了單層磚柱廠房的抗震設(shè)計(jì)。單層磚柱廠房作為工業(yè)廠房結(jié)構(gòu)的一種,經(jīng)歷了建國以來歷次大地震的考驗(yàn),同時(shí)也促進(jìn)了單層磚柱廠房結(jié)構(gòu)形式的不斷發(fā)展。 為充分研究單層磚柱廠房的抗震性能及破壞機(jī)理,本文基于歷史地震中單層磚柱廠房的震害資料,進(jìn)行了詳細(xì)的震害分析,給出了影響地震破壞的主要因素,編制了震害現(xiàn)場(chǎng)調(diào)查表和震害匯總表,對(duì)比出四種常用單層磚柱廠房震害預(yù)測(cè)方法的準(zhǔn)確度,并采用有限元軟件對(duì)廠房的地震破壞機(jī)理進(jìn)行了分析研究。 論文主要完成了以下工作: 1.在掌握單層磚柱廠房抗震研究現(xiàn)狀的基礎(chǔ)上,對(duì)收集到的單層磚柱廠房震害資料進(jìn)行了整理,分別總結(jié)了其常見的地震破壞形式及其震害原因,統(tǒng)計(jì)得到了單層磚柱廠房的地震易損性矩陣。 2.找出了影響單層磚柱廠房震害程度的主要因素,并采用多元線性回歸法、最小二乘法回歸擬合出各影響因素取值,并建立了單層磚柱廠房震害快速評(píng)估模型并編譯了評(píng)估軟件。 3.根據(jù)單層磚柱廠房震害現(xiàn)場(chǎng)調(diào)查工作需求,同時(shí)參考地震現(xiàn)場(chǎng)調(diào)查規(guī)范,設(shè)計(jì)了單層磚柱廠房單體震害現(xiàn)場(chǎng)調(diào)查表和震害匯總表。 4.采用逐步回歸法、柱頂位移法、樹狀圖法和模糊震害指數(shù)法分別對(duì)12棟典型單層磚柱廠房進(jìn)行了單體震害預(yù)測(cè)和群體震害預(yù)測(cè),并將四種方法的震害預(yù)測(cè)結(jié)果與實(shí)際震害情況進(jìn)行了對(duì)比分析。 5.應(yīng)用大型有限元分析軟件ABAQUS對(duì)蘆山地震中兩棟典型的單層磚柱廠房進(jìn)行了時(shí)程分析,選用6條經(jīng)典地震波作為地震動(dòng)輸入,提取了單層磚柱廠房在強(qiáng)震動(dòng)作用下的損傷云圖及內(nèi)力,根據(jù)計(jì)算結(jié)果研究了單層磚柱廠房在地震動(dòng)作用下的破壞機(jī)理。
[Abstract]:Since the founding of New China, China's industrialization process has continued to develop. Because of its low cost, convenient construction and easy access to materials, single-story brick factory building is still widely used in production rooms, warehouses and other auxiliary rooms of small and medium-sized industrial enterprises in China. Since the founding of the people's Republic of China in 1949, great importance has been attached to the seismic fortification and seismic design of building structures, especially since the Xingtai earthquake occurred, several seismic design codes have been issued in China. The seismic design of single-story brick column factory building has been considered in previous seismic design codes. As a kind of industrial factory building, single-story brick column factory house has experienced the test of every great earthquake since the founding of the people's Republic of China, and has also promoted the continuous development of the structure form of single-story brick column factory building. In order to fully study the seismic behavior and failure mechanism of single-story brick column factory building, based on the seismic damage data of single-story brick column factory building during historical earthquakes, this paper makes a detailed analysis of earthquake damage, and gives the main factors that affect the earthquake damage. The earthquake damage field questionnaire and the earthquake damage summary table are compiled, and the accuracy of four commonly used prediction methods for earthquake damage of single-story brick column factory building is compared. The earthquake failure mechanism of the building is analyzed and studied by using finite element software. The main work of this paper is as follows: 1. On the basis of mastering the present situation of seismic research of single-story brick column factory building, the collected seismic damage data of single-story brick column factory building are sorted out, and the common seismic failure forms and the causes of earthquake damage are summarized respectively. The seismic vulnerability matrix of single-story brick column factory building is obtained statistically. The main factors affecting the earthquake damage degree of single-story brick column factory building are found out, and the values of each influencing factor are fitted by multivariate linear regression method and least square regression method. The rapid assessment model of earthquake damage of single-story brick column factory building is established and the evaluation software is compiled. According to the demand of site investigation of single-story brick column factory building and referring to the criterion of earthquake field investigation, the questionnaire and summary table of single earthquake disaster site of single-story brick column factory building are designed. 4. Using stepwise regression method, column-top displacement method, tree chart method and fuzzy earthquake damage index method, 12 typical single-story brick column buildings were predicted for single earthquake damage and group earthquake damage, respectively. The results of earthquake disaster prediction of four methods are compared with the actual earthquake damage. 5. 5. Using Abaqus, a large-scale finite element analysis software, the time-history analysis of two typical single-story brick column buildings in the Lushan earthquake was carried out. Six classical seismic waves were selected as the input of ground motion. The damage cloud map and internal force of single-story brick column powerhouse under strong vibration were extracted, and the failure mechanism of single-story brick column powerhouse under ground motion was studied according to the calculated results.
【學(xué)位授予單位】:中國地震局工程力學(xué)研究所
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2013
【分類號(hào)】:TU362;TU312.3
本文編號(hào):2126507
[Abstract]:Since the founding of New China, China's industrialization process has continued to develop. Because of its low cost, convenient construction and easy access to materials, single-story brick factory building is still widely used in production rooms, warehouses and other auxiliary rooms of small and medium-sized industrial enterprises in China. Since the founding of the people's Republic of China in 1949, great importance has been attached to the seismic fortification and seismic design of building structures, especially since the Xingtai earthquake occurred, several seismic design codes have been issued in China. The seismic design of single-story brick column factory building has been considered in previous seismic design codes. As a kind of industrial factory building, single-story brick column factory house has experienced the test of every great earthquake since the founding of the people's Republic of China, and has also promoted the continuous development of the structure form of single-story brick column factory building. In order to fully study the seismic behavior and failure mechanism of single-story brick column factory building, based on the seismic damage data of single-story brick column factory building during historical earthquakes, this paper makes a detailed analysis of earthquake damage, and gives the main factors that affect the earthquake damage. The earthquake damage field questionnaire and the earthquake damage summary table are compiled, and the accuracy of four commonly used prediction methods for earthquake damage of single-story brick column factory building is compared. The earthquake failure mechanism of the building is analyzed and studied by using finite element software. The main work of this paper is as follows: 1. On the basis of mastering the present situation of seismic research of single-story brick column factory building, the collected seismic damage data of single-story brick column factory building are sorted out, and the common seismic failure forms and the causes of earthquake damage are summarized respectively. The seismic vulnerability matrix of single-story brick column factory building is obtained statistically. The main factors affecting the earthquake damage degree of single-story brick column factory building are found out, and the values of each influencing factor are fitted by multivariate linear regression method and least square regression method. The rapid assessment model of earthquake damage of single-story brick column factory building is established and the evaluation software is compiled. According to the demand of site investigation of single-story brick column factory building and referring to the criterion of earthquake field investigation, the questionnaire and summary table of single earthquake disaster site of single-story brick column factory building are designed. 4. Using stepwise regression method, column-top displacement method, tree chart method and fuzzy earthquake damage index method, 12 typical single-story brick column buildings were predicted for single earthquake damage and group earthquake damage, respectively. The results of earthquake disaster prediction of four methods are compared with the actual earthquake damage. 5. 5. Using Abaqus, a large-scale finite element analysis software, the time-history analysis of two typical single-story brick column buildings in the Lushan earthquake was carried out. Six classical seismic waves were selected as the input of ground motion. The damage cloud map and internal force of single-story brick column powerhouse under strong vibration were extracted, and the failure mechanism of single-story brick column powerhouse under ground motion was studied according to the calculated results.
【學(xué)位授予單位】:中國地震局工程力學(xué)研究所
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2013
【分類號(hào)】:TU362;TU312.3
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