本文選題：FRP抗震加固設(shè)計 + 數(shù)值分析　； 參考：《東北大學(xué)》2013年博士論文

【摘要】：對既有結(jié)構(gòu)進行抗震加固,是減輕地震災(zāi)害、減少人民生命財產(chǎn)損失的有效手段。隨著纖維復(fù)合材料的發(fā)展,采用纖維增強塑料(fiber-reinforced polymer, FRP)對結(jié)構(gòu)構(gòu)件進行抗震加固引起土木工程人員的廣泛關(guān)注。然而,針對FRP加固結(jié)構(gòu)而言,目前的抗震設(shè)計理論無法對不同地震作用下、不同加固預(yù)期目標(biāo)給予針對性的FRP加固設(shè)計；沒有評價FRP加固結(jié)構(gòu)抗震性能的標(biāo)準(zhǔn)和準(zhǔn)確評估其抗震性能的有效方法。因此,給出一套完整的、適合FRP加固結(jié)構(gòu)的抗震設(shè)計理論是非常有必要的。基于性能的結(jié)構(gòu)抗震設(shè)計理論是一種新概念的抗震設(shè)防理論,其核心思想是依據(jù)建筑物的重要程度,使所設(shè)計的建筑結(jié)構(gòu)在遭受未來不同地震作用時具有預(yù)期的抗震能力和使用功能,該理論有系統(tǒng)評估普通混凝土結(jié)構(gòu)抗震性能的方法,能夠準(zhǔn)確評估結(jié)構(gòu)的整體抗震性能。本文將基于性能的結(jié)構(gòu)抗震設(shè)計思想引入FRP加固設(shè)計中,針對FRP加固鋼筋混凝土框架開展了相關(guān)研究。本文主要內(nèi)容及結(jié)論有以下幾個方面：(1)從適用性、經(jīng)濟可修性、安全性三個方面劃分了FRP加固柱、梁構(gòu)件的性能水平。選取位移角作為性能指標(biāo),將顯著影響位移角的屬性因素引入到位移角的量化當(dāng)中,給出基于性能的FRP加固構(gòu)件性能水平的指標(biāo)限值。在節(jié)點滿足構(gòu)造要求的情況下,依據(jù)FRP加固混凝土構(gòu)件柱、梁的性能水平,將FRP加固鋼筋混凝土框架的性能水平劃分為五個等級：正常使用、暫時使用、修復(fù)使用、生命安全及防止倒塌。(2)給出適用于FRP混凝土加固構(gòu)件的塑性鉸模型。依據(jù)塑性鉸的轉(zhuǎn)角變形能力劃分其性能水平等級并給出相關(guān)表格。通過算例驗證了FRP混凝土加固構(gòu)件塑性鉸模型應(yīng)用于Etabs的可行性。算例結(jié)果表明,基于本文給出的塑性鉸模型所得到基底剪力、極限變形能力(頂點位移)比采用Etabs默認(rèn)塑性鉸模型均有所提高。相同地震作用下采用本文給出的塑性鉸模型所得到的頂點位移和層間位移比默認(rèn)塑性鉸模型均有所減小。(3)給出FRP加固混凝土柱、梁截面屈服前、后剛度以及FRP節(jié)點剪切剛度求解公式。依據(jù)現(xiàn)有試驗結(jié)果驗證了截面剛度公式的準(zhǔn)確性。給出層間側(cè)向剛度與梁、柱、節(jié)點剛度的關(guān)系式。將目標(biāo)層間側(cè)向剛度概念引入直接基于位移結(jié)構(gòu)抗震設(shè)計中,利用層間側(cè)向剛度計算FRP加固量,可以定量地解決FRP加固混凝土構(gòu)件的加固量問題。(4)針對FRP加固混凝土框架結(jié)構(gòu),提出了一種基于能力譜法考慮FRP加固混凝土構(gòu)件耗能增量的抗震性能評估方法。該方法以FRP構(gòu)件耗能增量對結(jié)構(gòu)整體等效阻尼比的影響為依據(jù),修正了FRP加固混凝土框架的等效阻尼比�；谠摰刃ё枘岜�,能夠更加真實的反映FRP加固混凝土框架結(jié)構(gòu)的抗震性能。
[Abstract]:Seismic reinforcement of existing structures is an effective means to reduce earthquake disasters and reduce the loss of people's lives and property. With the development of fiber composite materials, the application of fiber reinforced plastic fiber reinforced polymer (FRPP) to the seismic strengthening of structural members has attracted widespread attention of civil engineers. However, for the FRP reinforced structures, the current seismic design theory can not be targeted to different reinforcement targets of FRP reinforcement design under different earthquake. There is no standard to evaluate the seismic performance of FRP strengthened structures and an effective method to evaluate its seismic performance accurately. Therefore, it is necessary to give a complete set of seismic design theory suitable for FRP reinforced structure. The performance-based seismic design theory of structures is a new concept of seismic fortification theory, whose core idea is based on the importance of buildings. The designed building structure has the expected seismic capacity and function when it is subjected to different earthquake in the future. The theory has a systematic method to evaluate the seismic performance of ordinary concrete structure and can accurately evaluate the overall seismic performance of the structure. In this paper, the performance-based seismic design of structures is introduced into the design of FRP reinforcement, and the relevant research on reinforced concrete frames strengthened by FRP is carried out. The main contents and conclusions of this paper are as follows: 1) the performance level of FRP strengthened columns and beam members is divided from three aspects: applicability, economic repairable and safety. The displacement angle is selected as the performance index, and the attribute factors which affect the displacement angle are introduced into the quantization of the displacement angle, and the index limit of the performance level of the FRP strengthened member based on the performance is given. Under the condition that the joints meet the construction requirements, according to the performance level of FRP reinforced concrete members and beams, the performance level of reinforced concrete frame strengthened by FRP is divided into five levels: normal use, temporary use, repair use. A plastic hinge model for FRP reinforced concrete members is presented. According to the angle deformation ability of plastic hinge, the performance level is classified and the relevant tables are given. The feasibility of applying the plastic hinge model of FRP reinforced concrete member to Etabs is verified by an example. The numerical results show that the ultimate deformation capacity (vertex displacement) based on the plastic hinge model presented in this paper is higher than that of the Etabs default plastic hinge model. Under the same earthquake action, the vertex displacement and the interstory displacement obtained by the plastic hinge model given in this paper are smaller than those of the default plastic hinge model. After stiffness and FRP joint shear stiffness formula. The accuracy of the cross-section stiffness formula is verified by the existing experimental results. The relationship between the lateral stiffness and the stiffness of beams, columns and joints is given. The concept of lateral stiffness of target floors is introduced into the seismic design of displacement-based structures directly, and the reinforcement quantity of FRP can be quantitatively solved by using interstory lateral stiffness to solve the problem of reinforcement quantity of concrete members strengthened by FRP. A method for evaluating seismic performance of concrete members strengthened with FRP based on capacity spectrum method is presented. This method is based on the effect of the energy dissipation increment of FRP members on the overall equivalent damping ratio of the structure, and modifies the equivalent damping ratio of the concrete frame strengthened by FRP. Based on the equivalent damping ratio, the seismic behavior of concrete frame structure strengthened by FRP can be more truly reflected.
【學(xué)位授予單位】：東北大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2013
【分類號】：TU375.4;TU352.11

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 馬愷澤;劉伯權(quán);鄢紅良;梁興文;;高層建筑結(jié)構(gòu)抗震性能評估方法的研究與改進[J];建筑科學(xué)與工程學(xué)報;2012年04期

2 李浩;王文;易偉建;;基于能力譜的概率-非概率結(jié)構(gòu)體系抗震可靠度[J];地震工程與工程振動;2012年01期

3 李翔;顧祥林;;碳纖維布加固低強度混凝土梁的抗彎承載力[J];土木工程學(xué)報;2012年01期

4 黃培彥;張術(shù)寬;鄭順潮;周昊;鄭小紅;;FRP片材在土建修復(fù)加固工程中應(yīng)用的力學(xué)問題[J];固體力學(xué)學(xué)報;2010年05期

5 趙根田;曹芙波;;CFRP加固鋼筋混凝土震損短柱的抗震性能研究[J];工程抗震與加固改造;2010年05期

6 夏多田;唐艷娟;王玉山;石磊;;碳纖維布加固鋼筋混凝土柱的抗震性能試驗研究[J];石河子大學(xué)學(xué)報(自然科學(xué)版);2010年04期

7 門進杰;史慶軒;周琦;;框架結(jié)構(gòu)基于性能的抗震設(shè)防目標(biāo)和性能指標(biāo)的量化[J];土木工程學(xué)報;2008年09期

8 王吉忠;王蘇巖;黃承逵;;CFRP加固高強混凝土柱抗震性能和延性研究[J];大連理工大學(xué)學(xué)報;2008年05期

9 楊刻亞;楊春梅;吳慶文;;GFRP管混凝土圓形管柱抗震性能試驗研究[J];長春工程學(xué)院學(xué)報(自然科學(xué)版);2008年02期

10 彭亞萍;王鐵成;張玉敏;徐堯;;FRP加固混凝土梁柱邊節(jié)點抗震性能試驗[J];哈爾濱工業(yè)大學(xué)學(xué)報;2007年12期

相關(guān)博士學(xué)位論文 前1條

1 李建輝;混雜FRP及其加固腐蝕混凝土柱抗震性能試驗與理論研究[D];北京工業(yè)大學(xué);2010年

相關(guān)碩士學(xué)位論文 前4條

1 郭永恒;基礎(chǔ)隔震結(jié)構(gòu)基于性能的設(shè)計方法研究[D];廣州大學(xué);2007年

2 湯統(tǒng)壁;耗能減震鋼結(jié)構(gòu)基于性能的抗震設(shè)計方法研究[D];廣州大學(xué);2007年

3 郝娜;橡膠墊基礎(chǔ)隔震結(jié)構(gòu)基于性能的抗震評估方法[D];西安建筑科技大學(xué);2007年

4 王燁華;粘彈性阻尼高層鋼結(jié)構(gòu)基于性能的抗震設(shè)計方法研究[D];廣州大學(xué);2006年

，

本文編號：1804469