本文關(guān)鍵詞： 裝配式預(yù)應(yīng)力混凝土多層框架 有限元 抗震性能 構(gòu)造措施　出處：《福州大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：裝配式預(yù)應(yīng)力混凝土多層框架結(jié)構(gòu)體系滿足我國(guó)建筑業(yè)走可持續(xù)發(fā)展戰(zhàn)略要求,應(yīng)用前景廣闊。然而,以往對(duì)其結(jié)構(gòu)體系的研究主要集中在預(yù)應(yīng)力混凝土梁柱節(jié)點(diǎn)的靜力試驗(yàn)研究和計(jì)算分析方面；在整體結(jié)構(gòu)方面,特別是整體結(jié)構(gòu)抗震性能方面的研究卻鮮見報(bào)道。此外,該結(jié)構(gòu)體系中的預(yù)制板與梁的搭接面積小,預(yù)制板在高效預(yù)應(yīng)力筋作用下產(chǎn)生反拱；預(yù)制板之間存在拼縫等必然會(huì)對(duì)樓蓋和框架之間的協(xié)調(diào)工作產(chǎn)生影響,從而影響其框架結(jié)構(gòu)的抗震性能。因此,有必要對(duì)裝配式預(yù)應(yīng)力混凝土多層框架結(jié)構(gòu)的抗震性能進(jìn)行研究。首先,本文通過(guò)分析阪神、唐山、汶川、玉樹等地震中裝配式房屋結(jié)構(gòu)的破壞現(xiàn)象,總結(jié)了其破壞規(guī)律并提出了相應(yīng)的防震措施。其次,本文運(yùn)用SAP2000分別建立了裝配式預(yù)應(yīng)力混凝土多層框架結(jié)構(gòu)和現(xiàn)澆多層框架結(jié)構(gòu)的有限元模型進(jìn)行對(duì)比分析。從結(jié)構(gòu)的自振頻率、振型等動(dòng)力特性；樓層剪力、樓層變形、彈性層間位移等地震響應(yīng)；頂點(diǎn)最大位移、最大加速度、柱底剪力等時(shí)程曲線；結(jié)構(gòu)塑性發(fā)展、滯回曲線、累積滯回耗能等方面對(duì)裝配式預(yù)應(yīng)力混凝土多層框架結(jié)構(gòu)進(jìn)行抗震分析,探求該結(jié)構(gòu)體系在多遇地震和罕遇地震作用下的抗震性能。再次,在既有裝配式梁-板節(jié)點(diǎn)、拼縫、疊合面連接構(gòu)造措施的基礎(chǔ)上,總結(jié)并提出了幾點(diǎn)改進(jìn)裝配式預(yù)應(yīng)力混凝土多層框架結(jié)構(gòu)的節(jié)點(diǎn)、拼縫、疊合面構(gòu)造措施的建議。研究結(jié)果表明：(1)裝配式預(yù)應(yīng)力混凝土結(jié)構(gòu)在各大地震中的實(shí)際震害表現(xiàn)為樓蓋連接等非結(jié)構(gòu)構(gòu)件的破壞,其原因主要為樓蓋自身及其連結(jié)構(gòu)件的抗震強(qiáng)度不足和樓蓋連接處薄弱造成的,應(yīng)通過(guò)抗震驗(yàn)算和加強(qiáng)抗震構(gòu)造措施來(lái)防止。(2)在多遇地震作用下,裝配式預(yù)應(yīng)力混凝土多層框架結(jié)構(gòu)抗震性能與現(xiàn)澆多層框架結(jié)構(gòu)相當(dāng)；在罕遇地震作用下,其具有較好的延性和耗能能力,表現(xiàn)出了較優(yōu)越的抗震性能。(3)梁-板連接節(jié)點(diǎn)處,宜在疊合梁上增設(shè)反沿,宜將預(yù)制板底端部鋼筋伸出足夠的錨固長(zhǎng)度；在拼縫處,宜將齒形縫的矩形面改為圓弧面,宜設(shè)置接縫鋼筋；在板的疊合面處,可將預(yù)制板中的縱向格構(gòu)鋼筋改為縱向肋。最后,本文根據(jù)裝配式預(yù)應(yīng)力混凝土多層框架結(jié)構(gòu)抗震性能的分析結(jié)果,對(duì)其應(yīng)用與研究問(wèn)題作了些展望。
[Abstract]:Assembly prestressed concrete multi-story frame structure system meets the sustainable development strategy requirements of China's construction industry and has a broad application prospect. In the past, the research of its structure system mainly focused on the static test research and calculation analysis of the prestressed concrete Liang Zhu joint. However, there are few reports on the seismic behavior of the whole structure, especially on the seismic behavior of the whole structure. In addition, the overlap area between the prefabricated board and the beam is small, and the prefabricated slab produces the reverse arch under the action of high efficiency prestressing tendons. The existence of joint between the prefabricated panels will inevitably affect the coordination between the floor and the frame, thus affecting the seismic performance of the frame structure. It is necessary to study the seismic behavior of prestressing concrete multi-story frame structure. Firstly, this paper analyzes the damage phenomenon of prefabricated house structure in Hanshin, Tangshan, Wenchuan, Yushu and other earthquakes. The damage law is summarized and the corresponding earthquake prevention measures are put forward. Secondly. In this paper, the finite element models of prestressing concrete multi-story frame structure and cast-in-place multi-story frame structure are established by SAP2000, respectively. The dynamic characteristics of the structure, such as natural vibration frequency and vibration mode, are compared and analyzed. Floor shear force, floor deformation, elastic floor displacement and other seismic responses; Peak maximum displacement, maximum acceleration, column bottom shear and other time history curves; Structural plastic development, hysteretic curve, cumulative hysteretic energy dissipation and other aspects of prefabricated prestressed concrete multi-story frame structure seismic analysis. To explore the seismic performance of the structure system under the action of frequent and rare earthquakes. Thirdly, on the basis of the existing structural measures of prefabricated beam-plate joints, joints and overlapping planes. This paper summarizes and puts forward several points to improve the joints and joints of prestressing concrete multi-story frame structure. The research results show that the actual earthquake damage of prestressing concrete structure in every major earthquake is the failure of non-structural members such as floor connection. The main reasons are the insufficient seismic strength of floor itself and its connecting members and the weakness of floor joints, which should be prevented by seismic checking and strengthening seismic structural measures. The seismic behavior of prestressing concrete multi-story frame structure is equivalent to that of cast-in-place multi-story frame structure. Under the action of rare earthquake, it has better ductility and energy dissipation ability, and shows superior seismic performance. 3) the joint of beam-plate should be added to the composite beam. The reinforcement at the bottom of the prefabricated plate should be extended with sufficient anchoring length; At the joint, the rectangular surface of the tooth joint should be changed to the arc surface, and the joint reinforcement should be set. The longitudinal lattice reinforcement in prefabricated slab can be changed into longitudinal rib at the superimposed plane. Finally, the seismic behavior of prefabricated prestressed concrete multi-story frame structure is analyzed in this paper. Some prospects for its application and research are given.
【學(xué)位授予單位】：福州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU378.4;TU352.11

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