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  本文選題：雙向疊合板　切入點：倒T型預應力混凝土預制板　出處：《湖南科技大學》2013年碩士論文

【摘要】：混凝土疊合結(jié)構(gòu)與現(xiàn)澆結(jié)構(gòu)相比，具有節(jié)約模板、現(xiàn)場作業(yè)量少、施工速度快等優(yōu)點；與預制裝配式結(jié)構(gòu)相比，具有整體性好、抗震性能好等優(yōu)點�；炷两Y(jié)構(gòu)工程中采用疊合結(jié)構(gòu)可以取得顯著的經(jīng)濟效益、社會效益和環(huán)境效益，，在國內(nèi)外獲得了較為廣泛的應用和發(fā)展，但目前的疊合樓蓋結(jié)構(gòu)存在預制板自重較大、疊合面多采用平板、未考慮雙向受力等缺陷和不足。本文對倒T型預應力混凝土雙向疊合板的受力性能進行了研究和分析，并在工程實踐的基礎(chǔ)上總結(jié)和分析了其經(jīng)濟效益、環(huán)境效益以及施工工法，供工程應用參考。 首先介紹了倒T型預應力雙向疊合板的優(yōu)缺點、國內(nèi)外發(fā)展與研究現(xiàn)狀，研究分析了其極限承載力、抗彎剛度及疊合面的抗剪強度。對雙向疊合板的彈性設計方法進行研究分析，并通過具體算例證明了彈性設計方法的合理性。其次，分析了倒T型預應力雙向疊合板的構(gòu)件設計，并提出跨度在2.7m~6.6m之間預制構(gòu)件設計的幾何參數(shù)及合理配筋。 通過有限元計算軟件建立三個模型，分別為普通整澆板、預制底板厚度分別為30mm和45mm的疊合板，研究在相同荷載、邊界條件、構(gòu)件強度、鋼筋配置的情況下，預制底板厚度的變化對疊合板撓度和應力產(chǎn)生的影響，分析疊合板預制構(gòu)件厚度的合理范圍。 通過有限元計算軟件建立三個模型，尺寸分別為4.0m×4.0m、6.0m×6.0m、9.0m×9.0m的疊合板，研究在相同荷載、邊界條件、構(gòu)件強度、鋼筋配置的情況下，總體尺寸的變化導致抵抗變形能力的變化，從該角度進一步分析疊合板所應采取的合理尺寸。 通過有限元計算軟件建立兩個模型，分別為總體尺寸為4.0m×4.0m下8根肋和4根肋的疊合板，研究在相同荷載、邊界條件、構(gòu)件強度、鋼筋配置的情況下，預制構(gòu)件肋的改變對整體工作性能的影響，分析合理布置肋的數(shù)量。 最后，結(jié)合工程實踐，分析了倒T型預應力雙向疊合板的環(huán)境效益，總結(jié)了疊合樓板的施工工法，以促進其推廣應用。
[Abstract]:Compared with the cast-in-place structure, the concrete superimposed structure has the advantages of saving the formwork, less work done on the spot, fast construction speed, and so on, compared with the prefabricated prefabricated structure, it has the advantages of good integrity. The application of superimposed structures in concrete structures can achieve remarkable economic, social and environmental benefits, and has been widely used and developed at home and abroad. However, the existing superimposed floor structure has some defects, such as high self-weight of prefabricated slab, flat plate, no consideration of bidirectional force, etc. In this paper, the mechanical behavior of inverted T-type prestressed concrete bidirectional composite slab is studied and analyzed. The economic benefit, environmental benefit and construction method are summarized and analyzed on the basis of engineering practice. Firstly, the advantages and disadvantages of inverted T-type prestressed two-way composite slab are introduced, the development and research status at home and abroad are introduced, and its ultimate bearing capacity is studied and analyzed. The flexural stiffness and shear strength of the composite plane are studied and analyzed, and the rationality of the elastic design method is proved by an example. The member design of inverted T-type prestressed two-way composite slab is analyzed, and the geometric parameters and reasonable reinforcement of prefabricated members with span between 2.7m~6.6m are put forward. Through finite element calculation software, three models are established, one is common cast-in-place slab, the other is laminated slab with prefabricated bottom slab thickness of 30mm and 45mm respectively. Under the same load, boundary condition, strength of member and configuration of steel bar, three models are established. The influence of the thickness of prefabricated floor on the deflection and stress of the laminated plate is analyzed, and the reasonable range of the thickness of the prefabricated member is analyzed. Three models were established by finite element software, the dimensions of which were 4.0m 脳 4.0m 脳 6.0m 脳 6.0m 脳 6.0m 脳 9.0m respectively. Under the same load, boundary condition, strength of members and configuration of steel bar, the change of total dimension resulted in the change of resistance to deformation. From this point of view, the reasonable size of laminated plates should be further analyzed. Two models, 8 ribs and 4 ribs with a total size of 4.0m 脳 4.0m, are established by the finite element software. Under the same load, boundary conditions, strength of the members, and the configuration of the steel bar, the two models are studied. The influence of the change of the prefabricated rib on the overall working performance is analyzed and the number of reasonably arranged ribs is analyzed. Finally, combined with engineering practice, the environmental benefit of inverted T-type prestressed two-way composite slab is analyzed, and the construction method of superimposed floor slab is summarized in order to promote its popularization and application.
【學位授予單位】：湖南科技大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TU378.5

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本文編號：1662859