本文選題：耗能減震 + 低屈服點(diǎn)鋼��； 參考：《華中科技大學(xué)》2013年碩士論文

【摘要】：支撐是結(jié)構(gòu)抗側(cè)力體系的一種重要構(gòu)件，阻尼器可以大幅降低主體結(jié)構(gòu)的地震反應(yīng)，低屈服點(diǎn)鋼屈曲約束支撐(簡(jiǎn)稱BRB)是一種新型的耗能構(gòu)件。低屈服點(diǎn)鋼屈服點(diǎn)比普通鋼材低，較小變形時(shí)即可進(jìn)入塑性，耗散能量。本文用BLY100低屈服點(diǎn)鋼制作屈曲約束支撐，克服了傳統(tǒng)支撐體系受壓屈曲的缺點(diǎn)，其滯回曲線十分飽滿，是一種較有應(yīng)用前景的結(jié)構(gòu)體系。 本文首先介紹了低屈服點(diǎn)鋼屈曲約束支撐的原理和構(gòu)造形式，用有限元軟件ANSYS對(duì)六種長(zhǎng)度和截面面積不同的屈曲約束支撐進(jìn)行分析，得出其耗能量、屈服前剛度、屈服后剛度與截面面積、長(zhǎng)度的關(guān)系。然后，制作一個(gè)屈曲約束支撐，進(jìn)行拉壓試驗(yàn)，得到其滯回曲線，，結(jié)果表明其滯回曲線比較飽滿，具有出色的耗能能力，與ANSYS分析結(jié)果一致。最后，通過算例得出屈曲約束支撐具有較好的抗震能力，可以改善支撐框架結(jié)構(gòu)的承載能力，通過滯回耗能減小結(jié)構(gòu)在地震作用下反應(yīng)，降低了主體結(jié)構(gòu)的破壞程度，提高了整體結(jié)構(gòu)的抗震能力。 BLY100低屈服點(diǎn)鋼制作的屈曲約束支撐能降低結(jié)構(gòu)的地震內(nèi)力，具有出色的耗能能力，是很有應(yīng)用前景的新型耗能減震裝置。
[Abstract]:Bracing is an important component of structural lateral force system. Damper can greatly reduce the seismic response of the main structure. Low yield point steel buckling restrained bracing (BRBs) is a new type of energy dissipation member. The yield point of low yield point steel is lower than that of common steel. In this paper, BLY100 steel with low yield point is used to make buckling restrained braces, which overcomes the shortcoming of traditional bracing system under compression buckling, and its hysteretic curve is very full, which is a kind of structural system with better application prospect. In this paper, the principle and construction form of buckling restrained braces of low yield point steel are introduced. Six kinds of buckling restrained braces of different length and cross section area are analyzed by finite element software ANSYS, and the energy consumption and the stiffness before yield are obtained. The relationship between stiffness and cross-section area and length after yield. Then, a buckling restrained bracing is made, and the hysteretic curve is obtained by tensile and compression tests. The results show that the hysteretic curve is full and has excellent energy dissipation ability, which is consistent with the results of ANSYS analysis. Finally, it is concluded that buckling restrained braces have good seismic capacity, which can improve the bearing capacity of braced frame structures, reduce the response of the structures under earthquake through hysteretic energy dissipation, and reduce the failure degree of the main structure. The buckling restrained bracing made of BLY100 low yield point steel can reduce the seismic internal force of the structure and has excellent energy dissipation ability. It is a new type of energy dissipation device with good application prospect.
【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU391

【參考文獻(xiàn)】

相關(guān)期刊論文 前5條

1 周云,徐彤,俞公驊,李希平;耗能減震技術(shù)研究及應(yīng)用的新進(jìn)展[J];地震工程與工程振動(dòng);1999年02期

2 章叢俊;李愛群;趙明;;軟鋼阻尼器耗能減震結(jié)構(gòu)的研究與應(yīng)用綜述[J];工業(yè)建筑;2006年09期

3 郭彥林,劉建彬,蔡益燕,鄧科;結(jié)構(gòu)的耗能減震與防屈曲支撐[J];建筑結(jié)構(gòu);2005年08期

4 張文元;李姝穎;李東偉;;菱形開洞軟鋼阻尼器及其在結(jié)構(gòu)減震中的模擬分析[J];世界地震工程;2007年01期

5 周云,周福霖;耗能減震體系的能量設(shè)計(jì)方法[J];世界地震工程;1997年04期

本文編號(hào)：2016263