本文選題：擬動(dòng)力試驗(yàn) + 裝配式樓板��； 參考：《西安建筑科技大學(xué)》2015年碩士論文

【摘要】：本課題組綜合考慮現(xiàn)澆混凝土樓板在施工過程中存在的施工周期長(zhǎng)、現(xiàn)場(chǎng)濕作業(yè)多、結(jié)構(gòu)自重大等缺點(diǎn),結(jié)合相關(guān)規(guī)范中對(duì)于裝配式混凝土樓板應(yīng)用范圍的限定,設(shè)計(jì)出一種在板底附加斜撐,在梁板、板板結(jié)點(diǎn)采用新型連接方式的裝配式樓板體系,以探索采用新型裝配式樓板體系代替現(xiàn)澆整體式樓板可能性,本文研究?jī)?nèi)容與成果包括:1.對(duì)按照1/4比例縮尺制作的現(xiàn)澆整體式樓板-鋼框架剪力墻結(jié)構(gòu)、采用新型連接的裝配式樓板鋼框架-剪力墻結(jié)構(gòu)進(jìn)行等效單自由度擬動(dòng)力試驗(yàn),通過對(duì)兩種試驗(yàn)?zāi)Ｐ偷目拐鹦阅苤笜?biāo)進(jìn)行對(duì)比與分析,表明采用新型連接的裝配式樓板,其梁板結(jié)點(diǎn)、板板結(jié)點(diǎn)連接牢靠,板底斜撐工作性能良好,板底附加斜撐的采用新型連接的裝配式樓板能夠有效地增強(qiáng)結(jié)構(gòu)的整體性與變形協(xié)調(diào)能力,使之具有與現(xiàn)澆式混凝土樓板結(jié)構(gòu)等效的良好抗震性能。因此,可以考慮在高烈度地區(qū)采用板底附加斜撐的新型樓板體系代替現(xiàn)澆混凝土樓板。2.以深梁理論為基礎(chǔ),將裝配式樓板等效為水平放置的深梁,用理論方法分別計(jì)算現(xiàn)澆整體式混凝土樓板、新型裝配式樓板以及斜撐體系的平面內(nèi)等效剛度,計(jì)算結(jié)果從理論上證明了采用板底附加斜撐的新型預(yù)制裝配式混凝土樓板體系具有與現(xiàn)澆混凝土樓板幾乎相同的平面內(nèi)剛度。提出考慮附加板底斜撐的新型裝配式樓板結(jié)構(gòu)的剛度系數(shù)比Rz,通過與剛性樓蓋假設(shè)下剪力分配的結(jié)果對(duì)比分析表明,這一誤差范圍滿足相關(guān)文獻(xiàn)中規(guī)定的對(duì)于非剛性樓蓋其剪力傳遞誤差值的要求,證明了考慮板底附加斜撐貢獻(xiàn)的剛度系數(shù)比Rz,能夠作為衡量板底附加斜撐的樓板剛性的重要指標(biāo)。3.通過數(shù)值模型分析手段,分別制作四種試件以對(duì)比分析斜撐的設(shè)置對(duì)純框架-剪力墻結(jié)構(gòu)、帶有樓板的框架-剪力墻結(jié)構(gòu)的影響,發(fā)現(xiàn)在試件處于彈塑性階段時(shí),斜撐的存在能夠有效降低帶有樓板的框剪結(jié)構(gòu)沿水平荷載方向的位移,并且能夠提高其結(jié)構(gòu)的極限承載力,證明了斜撐具有提升帶有樓板的框架剪力墻結(jié)構(gòu)能夠提高其結(jié)構(gòu)的極限承載力,證明了斜撐具有提升帶有樓板的框架剪力墻結(jié)構(gòu)整體性與樓板平面內(nèi)剛度的作用。同時(shí)綜合考慮經(jīng)濟(jì)、使用功能的多方面因素,設(shè)計(jì)了一種新型八字形斜撐。數(shù)值分析結(jié)果證明:在試件處于彈性以及彈塑性階段時(shí),帶有新型斜撐的試件較水平X斜撐試件能夠有效降低沿水平荷載方向的位移,使內(nèi)力分布更均勻,證明了八字型斜撐具有比水平X型斜撐更好的工作性能與應(yīng)用價(jià)值。
[Abstract]:Considering the disadvantages of the construction of cast-in-place concrete floor slab, such as long construction period, more wet work on site, and significant structure, this group combined with the limitation of the application range of prefabricated concrete floor slab in relevant codes. A new type of fabricated floor system with additional diagonal brace on the bottom of the slab and a new type of connection between the beam and the slab is designed to explore the possibility of using the new type of fabricated floor system instead of the cast-in-place integral floor system. The research contents and results of this paper include: 1. The one-degree-of-freedom pseudo-dynamic test of a cast-in-place integral floor slab-steel frame shear wall structure made according to a scale of 1 / 4 is carried out using a new type of fabricated floor steel frame-shear wall structure. By comparing and analyzing the seismic performance indexes of the two test models, it is shown that the beam-slab node and plank-plate node are firmly connected, and the working performance of inclined brace of slab bottom is good. A new type of fabricated floor with additional diagonal brace on the bottom of the slab can effectively enhance the overall and deformation coordination ability of the structure and make it have good seismic performance equivalent to that of the cast-in-place concrete floor structure. Therefore, a new type of floor system with inclined brace on the bottom of the slab can be considered to replace the cast-in-place concrete floor in the high intensity area. Based on the deep beam theory, the assembled floor slab is equivalent to the horizontal deep beam, and the in-plane equivalent stiffness of the cast-in-place integral concrete floor slab, the new assembled floor slab and the inclined bracing system is calculated by the theoretical method, respectively. The calculation results show that the new precast prefabricated concrete floor system with inclined brace on the bottom of the slab has almost the same in-plane stiffness as the cast-in-place concrete floor. In this paper, the stiffness coefficient ratio of a new type of fabricated floor structure with additional slanting brace is put forward, and the results of shear force distribution under the assumption of rigid floor are compared and analyzed. This range of errors meets the requirements of the shear transmission error for non-rigid floor floors as stipulated in the relevant literature. It is proved that the stiffness coefficient of the slab with additional diagonal brace is more than Rz, which can be used as an important index to measure the rigidity of the floor with additional inclined brace on the floor. By means of numerical model analysis, four kinds of specimens were made to compare the effects of inclined bracing on the pure frame-shear wall structure and the frame-shear wall structure with floor. It was found that the specimen was in the elastic-plastic stage. The existence of oblique brace can effectively reduce the displacement of frame-shear structure with floor slab along the direction of horizontal load, and can improve the ultimate bearing capacity of the structure. It is proved that the inclined brace can raise the ultimate bearing capacity of the frame shear wall structure with floor slab, and that the inclined brace has the function of lifting the whole structure of frame shear wall with floor slab and the stiffness of floor plane. At the same time, a new type of octagonal diagonal brace is designed considering the economy and various factors of function. The numerical results show that when the specimen is in the elastic and elastic-plastic stage, the specimen with new inclined brace can effectively reduce the displacement along the horizontal load direction and make the distribution of internal force more uniform than that of the horizontal X inclined braced specimen. It is proved that the octahedral diagonal brace has better working performance and application value than horizontal X diagonal brace.
【學(xué)位授予單位】：西安建筑科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU398

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本文編號(hào)：1779824