本文關(guān)鍵詞： 裝配式 耗能 鉸節(jié)點(diǎn) 設(shè)計(jì)可控 弱梁強(qiáng)柱　出處：《哈爾濱工業(yè)大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

【摘要】：地震災(zāi)害自古以來就是人類面臨的最嚴(yán)重的自然災(zāi)害之一,具有極強(qiáng)的隨機(jī)性、不可預(yù)測性和大范圍波及性,嚴(yán)重威脅著人類的生存和社會發(fā)展。近年來頻發(fā)的強(qiáng)烈地震造成建筑結(jié)構(gòu)大量破壞,導(dǎo)致大量的人員傷亡和財(cái)產(chǎn)損失。對于鋼框架結(jié)構(gòu),梁柱節(jié)點(diǎn)的抗震性能對多層鋼框架的抗震性能起著決定作用,人們一直尋求有效的節(jié)點(diǎn)設(shè)計(jì),防止節(jié)點(diǎn)發(fā)生脆性破壞,以節(jié)點(diǎn)良好的延性和耗能能力有效提高結(jié)構(gòu)的抗震性能。對于一些建筑,甚至要求其在大震作用下經(jīng)過簡單修復(fù)即可繼續(xù)使用。在此背景下,本課題提出了一種可用于裝配式鋼結(jié)構(gòu)中的預(yù)制裝配梁端鋼板耗能鉸節(jié)點(diǎn),它的設(shè)計(jì)思路是:首先節(jié)點(diǎn)通過銷軸連接,形成鉸接機(jī)制,承擔(dān)豎向荷載,然后鉸接銷軸四周通過螺栓連接鋼板,四周鋼板為節(jié)點(diǎn)提供了抗轉(zhuǎn)動的能力。此節(jié)點(diǎn)各參數(shù)可獨(dú)立于梁柱進(jìn)行設(shè)計(jì)并易于調(diào)整,其中鋼板兼有承載與耗能的功能,耗能能力強(qiáng)。對于采用此預(yù)制裝配梁端鋼板耗能鉸節(jié)點(diǎn)的結(jié)構(gòu),通過合理的參數(shù)設(shè)計(jì),容易實(shí)現(xiàn)“弱梁強(qiáng)柱”這種良好的抗震體系,實(shí)現(xiàn)在大震作用下,結(jié)構(gòu)變形和耗能主要集中在節(jié)點(diǎn)上,節(jié)點(diǎn)組合鋼板進(jìn)入塑性耗能,節(jié)點(diǎn)其余部分和結(jié)構(gòu)主體構(gòu)件依然處于彈性或弱非線性階段,地震作用后,可以更換四周鋼板實(shí)現(xiàn)結(jié)構(gòu)整體功能的快速恢復(fù),修復(fù)簡單較易實(shí)現(xiàn)�；诖吮疚难芯苛艘韵聝�(nèi)容:(1)基于節(jié)點(diǎn)的設(shè)計(jì)思路,進(jìn)行了節(jié)點(diǎn)的構(gòu)造設(shè)計(jì)。采用ABAQUS有限元分析軟件建立了四種采用不同截面鋼板的節(jié)點(diǎn)的有限元模型,分別對它們進(jìn)行了單調(diào)位移加載和變幅循環(huán)加載模擬,研究了這四種采用不同截面鋼板的節(jié)點(diǎn)的變形形式、應(yīng)力應(yīng)變分布、剛度、強(qiáng)度、耗能能力及疲勞性能,同時也為后續(xù)節(jié)點(diǎn)的足尺試驗(yàn)提供了設(shè)計(jì)參考。(2)根據(jù)有限元分析結(jié)果,舍棄了其中一種性能較差的鋼板組合方式,對采用其余三種鋼板組合方式的節(jié)點(diǎn)進(jìn)行了擬靜力試驗(yàn)和疲勞性能試驗(yàn),詳細(xì)記錄并分析了試驗(yàn)現(xiàn)象,得到了三種節(jié)點(diǎn)的滯回曲線,結(jié)合試驗(yàn)現(xiàn)象分析了這三種節(jié)點(diǎn)的變形形式、剛度、強(qiáng)度、耗能能力,通過等幅疲勞試驗(yàn)研究驗(yàn)證了三種節(jié)點(diǎn)均具有優(yōu)異的疲勞性能。(3)根據(jù)有限元分析和試驗(yàn)研究結(jié)果,對比采用不同鋼板組合節(jié)點(diǎn)的力學(xué)性能,并考慮可裝配性、可更換性,采用槽型截面鋼板的節(jié)點(diǎn)是最優(yōu)選擇�；诒“宓男隙壤碚摵陀邢迵隙壤碚�,推導(dǎo)出采用槽型截面鋼板節(jié)點(diǎn)的恢復(fù)力模型。然后基于本文提出的采用預(yù)制裝配梁端鋼板耗能鉸節(jié)點(diǎn)結(jié)構(gòu)的設(shè)計(jì)思路,具體設(shè)計(jì)了一個三層鋼框架結(jié)構(gòu),分別對其進(jìn)行靜力非線性分析和動力時程非線性分析,驗(yàn)證了該設(shè)計(jì)思路的可行性。
[Abstract]:Since ancient times, earthquake disaster is one of the most serious natural disasters faced by human beings, which has strong randomness, unpredictability and wide range of contagion. Serious threat to human survival and social development. In recent years, frequent strong earthquakes caused a large number of damage to the building structure, resulting in a large number of casualties and property losses. The seismic behavior of Liang Zhu joints plays a decisive role in the seismic performance of multi-story steel frame. People have been looking for effective joint design to prevent the joint from brittle failure. The good ductility and energy dissipation capacity of the joints can effectively improve the seismic performance of the structure. For some buildings, it is even required to be simply repaired under the action of large earthquakes. In this paper, a prefabricated assembly beam end steel energy consumption joint is proposed, which can be used in the assembly steel structure. The design idea is: first, the joints are connected by pin shaft to form hinge mechanism to bear the vertical load. The hinged pin shaft is then bolted around the steel plate, which provides the joint with the ability to resist rotation. The parameters of the joint can be designed independently of Liang Zhu and are easy to adjust. The steel plate has the function of bearing and energy dissipation, and the energy dissipation ability is strong. For the structure of the steel plate energy dissipation hinge joint with this precast assembly beam end, the reasonable parameter design is adopted. It is easy to realize the good seismic system of "weak beam and strong column". Under the action of strong earthquake, the deformation and energy dissipation of the structure are mainly concentrated on the joints, and the combined steel plate of the joint enters into the plastic energy dissipation. The rest of the joints and the main members of the structure are still in the elastic or weakly nonlinear stage. After earthquake, the surrounding steel plates can be replaced to achieve the rapid recovery of the whole function of the structure. The repair is simple and easy to implement. Based on this, this paper studies the following contents: 1) Node-based design ideas. ABAQUS finite element analysis software is used to establish four finite element models of joints with different sections of steel plates. The monotone displacement loading and cyclic loading with variable amplitude are simulated, and the deformation forms, stress-strain distribution, stiffness, strength, energy dissipation capacity and fatigue performance of the four joints with different sections are studied. At the same time, it also provides the design reference for the full-scale test of the subsequent joints. (2) according to the results of finite element analysis, one of the poor performance of steel plate combination is abandoned. The pseudo-static test and fatigue performance test were carried out for the joints with the other three kinds of steel plate combinations. The experimental phenomena were recorded and analyzed in detail, and the hysteretic curves of the three joints were obtained. The deformation form, stiffness, strength and energy dissipation capacity of the three joints are analyzed in combination with the experimental phenomena. According to the finite element analysis and experimental results, the mechanical properties of the joints with different steel plates are compared. Considering the assemblability and exchangeability, the joint of slotted steel plate is the best choice. Based on the theory of small deflection and finite deflection of thin plate. The restoring force model of steel plate joints with slot section is derived. Then a three-story steel frame structure is designed based on the design idea of the joint structure of steel plate energy dissipation hinge with prefabricated assembly beam end proposed in this paper. Static nonlinear analysis and dynamic time history nonlinear analysis are carried out to verify the feasibility of the design idea.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TU398;TU352.11
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本文編號：1477389