本文選題：裝配預制梁 + 抗剪承載力�。� 參考：《遼寧工程技術大學》2015年碩士論文

【摘要】：隨著我國建筑行業(yè)突飛猛進的發(fā)展,預制裝配式結構已成為施工過程中常用的生產方式。相對于傳統(tǒng)現場澆筑混凝土方法,預制裝配結構不僅可以有效的加快施工速度,縮短建設周期,提高勞動生產率,而且可以有效降低資源消耗,有助于促進我國建筑行業(yè)工廠化、產業(yè)化和城市化進程。本文為了研究企口現澆裝配預制梁的抗剪性能,共設計和制作了8根鋼筋混凝土梁,分別對5根簡支梁和3根連續(xù)梁進行抗剪承載力試驗,同時采用數值分析,從試驗和模擬兩方面對企口現澆裝配預制梁的抗剪性能進行研究。首先,對企口現澆裝配預制梁進行抗剪承載力試驗,觀察在兩點對稱集中荷載作用下裝配預制梁的荷載-撓度關系、荷載-縱筋和荷載-箍筋以及荷載-混凝土應變發(fā)展規(guī)律、正截面開裂荷載、斜截面開裂荷載、極限承載力的變化情況,分析裝配預制梁的裂縫延伸趨勢、斜截面破壞形態(tài)、企口處新舊混凝土的連接性能和預制段長度對試驗構件整體變化趨勢的影響,并與整澆對比梁的力學性能進行對比分析。試驗結果表明：裝配預制梁與整澆對比梁具有相似的變形規(guī)律及破壞形態(tài),并有相近的抗剪承載力。隨著荷載的持續(xù)增加,企口截面剛度有所削弱,但對構件整體變形影響較小。其次,利用有限元分析軟件ADINA,通過對裝配預制梁的模擬,分析預制段長度對模型整體變化趨勢的影響,找出企口位置的合理區(qū)域,并通過對模擬所得數據與試驗數據比對分析。
[Abstract]:With the rapid development of the construction industry in China, prefabricated assembly structure has become a common production method in the construction process. Compared with the traditional site pouring concrete method, the precast assembly structure can not only speed up the construction speed, shorten the construction cycle, improve the labor productivity, but also effectively reduce the consumption of resources, and help to reduce the consumption of resources. In order to promote the process of industrialization, industrialization and urbanization in China's construction industry. In order to study the shear performance of prefabricated beams, 8 reinforced concrete beams were designed and made, and the shear capacity tests of 5 simple supported beams and 3 continuous beams were carried out respectively. At the same time, the numerical analysis was used to face the test and Simulation of the two parties. The shear resistance of cast-in-situ precast beams is studied. First, the shear bearing capacity test of the prefabricated beam is carried out. The load deflection relationship of the prefabricated beams under two symmetrical concentrated loads is observed. The stress of the prefabricated beams, the load longitudinal reinforcement, the load hoop and the load concrete stress change law, the cross section cracking load and the oblique section open. The crack extension of the prefabricated beam, the failure form of the oblique section, the connection property of the old and the old concrete and the length of the prefabricated section on the overall change trend of the test component are analyzed, and the mechanical properties of the contrast beam are compared with that of the contrast beam. The experimental results show that the prefabricated beam is assembled. The contrast beam has similar deformation laws and failure modes, and has similar shear bearing capacity. With the continuous increase of the load, the rigidity of the section is weakened, but it has little effect on the whole deformation of the component. Secondly, the finite element analysis software ADINA is used to simulate the prefabricated beam, and the length of the prefabricated section is analyzed as a whole. The influence of the trend of change is found, and the reasonable area of the location is found, and the simulation data are compared with the experimental data.

【學位授予單位】：遼寧工程技術大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TU37;TU756

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