【摘要】：近年來(lái)隨著我國(guó)經(jīng)濟(jì)的迅速發(fā)展,輕質(zhì)高強(qiáng)材料的大量應(yīng)用,高層建筑和高聳結(jié)構(gòu)正朝著高度越來(lái)越高、細(xì)長(zhǎng)化、輕質(zhì)高強(qiáng)、阻尼小的方向發(fā)展,導(dǎo)致上述結(jié)構(gòu)剛度較柔,對(duì)風(fēng)荷載越來(lái)越敏感,在強(qiáng)風(fēng)荷載作用下的側(cè)移和風(fēng)致加速度明顯增大,風(fēng)荷載往往成為控制此類(lèi)高柔建(構(gòu))筑物結(jié)構(gòu)設(shè)計(jì)的主要控制荷載。為控制超高層建筑和高聳結(jié)構(gòu)在強(qiáng)風(fēng)作用下產(chǎn)生過(guò)大的風(fēng)致側(cè)移和風(fēng)致加速度,以滿(mǎn)足規(guī)范對(duì)上述結(jié)構(gòu)在強(qiáng)風(fēng)作用下的變形及舒適度要求。本文把地震工程中常用的摩擦擺(Fricition Pendulum Syetem,FPS)隔震系統(tǒng)和常用的調(diào)頻質(zhì)量阻尼器(Tunned Mass Damper,TMD)被動(dòng)控制系統(tǒng)有機(jī)結(jié)合,形成一種新型的摩擦擺調(diào)諧質(zhì)量阻尼器(FPS-TMD)被動(dòng)控制系統(tǒng)。放置在高層建筑與高聳結(jié)構(gòu)頂部,來(lái)達(dá)到對(duì)主體結(jié)構(gòu)進(jìn)行風(fēng)振控制的目的。在對(duì)FPS-TMD系統(tǒng)本身的靜動(dòng)力學(xué)特征進(jìn)行理論分析的基礎(chǔ)上,本文對(duì)高聳結(jié)構(gòu)頂部設(shè)置此新型FPS-TMD系統(tǒng),在風(fēng)荷載作用下的風(fēng)振響應(yīng)理論進(jìn)行了詳細(xì)而系統(tǒng)的理論分析和推導(dǎo)。并結(jié)合本論文的理論分析成果,以高聳結(jié)構(gòu)廣州新電視塔為實(shí)例,在對(duì)其順風(fēng)向脈動(dòng)風(fēng)荷載進(jìn)行模擬的基礎(chǔ)上,采用此高聳結(jié)構(gòu)的豎向集中質(zhì)量多自由度簡(jiǎn)化模型和三維整體有限元模型,對(duì)此高聳結(jié)構(gòu)頂部假設(shè)設(shè)置FPS-TMD的風(fēng)振控制效率進(jìn)行了較為系統(tǒng)的分析,并對(duì)采用兩類(lèi)有限元模型進(jìn)行風(fēng)振控制的分析結(jié)果進(jìn)行了對(duì)比。本文主要研究的內(nèi)容如下:對(duì)摩擦擺調(diào)諧質(zhì)量阻尼器(FPS-TMD)系統(tǒng)的力學(xué)特征、自治動(dòng)力特性進(jìn)行了相關(guān)研究及部分計(jì)算公式的推導(dǎo),闡明了FPS-TMD系統(tǒng)自身的靜動(dòng)力學(xué)特性。在此基礎(chǔ)上推導(dǎo)建立了多高層結(jié)構(gòu)頂部帶FPS-TMD系統(tǒng)與主體結(jié)構(gòu)相結(jié)合的結(jié)構(gòu)體系,在風(fēng)荷載作用下的風(fēng)致時(shí)程動(dòng)力分析的相關(guān)數(shù)值方法及動(dòng)力分析策略。利用諧波疊加法,結(jié)合對(duì)廣州新電視塔進(jìn)行風(fēng)洞實(shí)驗(yàn)的分析結(jié)果,利用準(zhǔn)定常假定對(duì)與主體結(jié)構(gòu)的順風(fēng)向荷載進(jìn)行數(shù)值模擬,應(yīng)用廣州新電視塔的豎向集中質(zhì)量多自由度簡(jiǎn)化模型。假設(shè)其頂部設(shè)置FPS-TMD被動(dòng)控制系統(tǒng),通過(guò)選用FPS-TMD系統(tǒng)的不同參數(shù),如FPS-TMD系統(tǒng)質(zhì)量、滑道半徑、不同摩擦系數(shù)模型等,對(duì)此高聳結(jié)構(gòu)進(jìn)行了風(fēng)振響應(yīng)及風(fēng)振控制效率的參數(shù)化分析。數(shù)值分析表明通過(guò)選用適當(dāng)?shù)腇PS-TMD系統(tǒng)參數(shù),對(duì)主體結(jié)構(gòu)的風(fēng)振位移和風(fēng)致加速度控制效率明顯。通過(guò)對(duì)大型通用有限元軟件SAP2000的摩擦擺隔振阻尼器單元,進(jìn)行改進(jìn)和擴(kuò)充,采取一系列分析工況的組合,實(shí)現(xiàn)了利用SAP2000軟件,進(jìn)行高層建筑和高聳結(jié)構(gòu)頂部設(shè)置FPS-TMD系統(tǒng)的風(fēng)振時(shí)程動(dòng)力分析方法。同時(shí)采用廣州新電視塔三維整體有限元模型,選用多種不同的風(fēng)振控制模型,對(duì)此高聳結(jié)構(gòu)進(jìn)行了在選用不同模型工況下的風(fēng)振響應(yīng)及風(fēng)振控制效率分析,對(duì)各類(lèi)不同分析工況下的風(fēng)振控制結(jié)果進(jìn)行了對(duì)比分析。采用三維有限元整體模型的數(shù)值分析表明,用多重質(zhì)量塊的FPS-MTMD系統(tǒng),以及設(shè)置雙向FPS-TMD系統(tǒng)后,對(duì)本文中所涉及的分析工況而言風(fēng)振控制效率接近。但設(shè)置雙向FPS-TMD系統(tǒng)時(shí),可以有效抵御來(lái)自包括順風(fēng)向和橫風(fēng)向荷載的共同作用。通過(guò)本文綜合分析表明,本文提出的FPS-TMD系統(tǒng)可以有效地減少風(fēng)荷載對(duì)主體結(jié)構(gòu)的風(fēng)致振動(dòng)響應(yīng),同時(shí)FPS-TMD系統(tǒng)因?yàn)榫哂辛己玫姆�(wěn)定性和自復(fù)位、自限位功能。FPS-TMD系統(tǒng)作為一種有效的被動(dòng)減振裝置,可以有效地利用于高層建筑和高聳結(jié)構(gòu)的風(fēng)振控制體系中。
[Abstract]:In recent years, with the rapid development of our country's economy, many applications of lightweight high-strength materials, high-rise buildings and high-rise structures are moving toward higher and higher heights, elongated, light-weight, high-strength and small damping, resulting in the above-mentioned structural rigidity being more flexible and more sensitive to wind load. Side-shift and wind-induced acceleration under strong wind load are obviously increased, and wind load tends to be the main control load to control the structural design of such high-flexible buildings (structures). In order to control the high-rise building and the high-rise structure, a large wind-induced side-shift and wind-induced acceleration are generated under the action of strong wind, so as to meet the requirements for deformation and comfort of the structure under strong wind action. In this paper, a novel friction pendulum tuning mass damper (FPS-TMD) passive control system is formed by combining the common friction pendulum (FPS) seismic isolation system and the common FM mass damper (TMD) passive control system in seismic engineering. and the aim of wind vibration control on the main body structure is achieved by placing the high-rise building and the top of the high-rise structure. Based on the theoretical analysis of the static dynamic characteristics of FPS-TMD system, this paper introduces the new FPS-TMD system at the top of the high-rise structure, and gives a detailed analysis and deduction of the wind-vibration response theory under wind load. Based on the analysis of the theoretical analysis of the thesis, based on the simulation of the wind load of the high-rise building, the multi-degree-of-freedom simplified model and the three-dimensional integral finite element model of the high-rise structure are adopted. At the top of this high-rise structure, the wind vibration control efficiency of FPS-TMD is analyzed, and the results of wind vibration control using two kinds of finite element models are compared. The main contents of this paper are as follows: The mechanical characteristics and autonomous power characteristics of the friction pendulum tuned mass damper (FPS-TMD) system are studied and some calculation formulas are derived, and the static and dynamic characteristics of FPS-TMD system are expounded. On the basis of this, the structure system of FPS-TEX system and the main body structure in the top of the multi-layer structure is deduced, and the relevant numerical method and dynamic analysis strategy of the wind-induced time-range dynamic analysis under wind load are established. Based on the analysis of the wind tunnel experiment of Guangzhou New TV Tower by harmonic superposition method, a numerical simulation of the wind tunnel load with the main structure is carried out by using the quasi-stationary assumption, and the multi-degree-of-freedom simplified model of the vertical concentrated mass of the new TV tower in Guangzhou is applied. Assuming that the top of the system is equipped with FPS-TMD passive control system, the wind vibration response and wind vibration control efficiency of the high-rise structure are analyzed by selecting different parameters of FPS-TMD system, such as FPS-TMD system mass, slideway radius, different friction coefficient model, etc. Numerical analysis shows that the wind-vibration displacement and the wind-induced acceleration control efficiency of the main body structure are obviously improved by selecting the appropriate FPS-TMD system parameters. Through the improvement and expansion of the friction pendulum vibration isolation damper unit of the large-scale general-purpose finite element software SAP2000, a series of combination of analysis conditions is adopted to realize the wind-vibration time-range dynamic analysis method for the high-rise building and the top of the high-rise structure by using the SAP2000 software. At the same time, the three-dimensional integral finite element model of Guangzhou New TV Tower is adopted, and a variety of different wind vibration control models are selected, and the wind vibration response and the wind vibration control efficiency analysis under different model conditions are selected for the high-rise structure. The wind vibration control results under different analysis conditions were compared and analyzed. Numerical analysis of the three-dimensional finite element model shows that the wind vibration control efficiency is close to the analysis conditions involved in this paper after the FPS-MTMD system with multiple mass blocks and the two-way FPS-MTMD system are set up. However, in the case of a two-way FPS-TMD system, it is possible to effectively resist the common effects of loads from both downwind and crosswind directions. Through the comprehensive analysis of this paper, the FPS-TMD system proposed in this paper can effectively reduce the wind-induced vibration response of wind load on the main structure, and the FPS-TMD system has good stability and self-resetting and self-limiting function. FPS-TMD system is a kind of effective passive vibration damping device, which can be used effectively in the wind vibration control system of high-rise buildings and high-rise structures.
【學(xué)位授予單位】：廣州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TU973.213

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