本文選題：帶肋　切入點：疊合樓板　出處：《西安建筑科技大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：帶肋鋼筋桁架混凝土疊合樓板是一種新型疊合結(jié)構(gòu)，它是將在工廠加工成的鋼筋桁架固定好后，澆筑混凝土形成帶肋鋼筋桁架混凝土預(yù)制薄板，，待預(yù)制薄板吊裝就位后澆筑疊合層混凝土制作而成的。施工時無需設(shè)臨時支撐、無需支模，具有二階段制造和二次受力的特點。 本文對帶肋鋼筋桁架混凝土疊合樓板在施工階段和正常使用階段的受力性能進行了試驗研究，發(fā)現(xiàn)當(dāng)該疊合樓板中的預(yù)制板部分短期剛度滿足規(guī)范要求時，使用階段的疊合板承載力即可滿足要求，且撓度遠小于規(guī)范限值。 利用ANSYS通過改變各種參數(shù)，確定了各參數(shù)對其受力性能的影響。分析表明：混凝土肋高對預(yù)制板短期剛度影響最為明顯，肋寬次之；鋼筋桁架參與了樓板整體受力，桁架高度及上、下弦桿鋼筋直徑對兩階段的短期剛度均有很大影響；腹桿直徑對預(yù)制板和疊合板短期剛度幾乎沒有影響，設(shè)計中只需滿足構(gòu)造要求即可。在此基礎(chǔ)上，得到常用跨度下帶肋鋼筋桁架混凝土疊合樓板選用表，及其經(jīng)濟適用跨度。 最后，結(jié)合試驗數(shù)據(jù)及有限元分析，以平截面假定為基礎(chǔ)，綜合考慮鋼筋桁架及混凝土肋等對預(yù)制板截面剛度的貢獻，通過一定的簡化假定進行理論推導(dǎo)，提出了帶肋鋼筋桁架混凝土疊合樓板在施工階段和正常使用階段短期剛度及承載力的計算公式。
[Abstract]:The reinforced truss concrete composite floor slab with ribs is a new type of superimposed structure. It is a prefabricated concrete slab formed by pouring concrete after fixing the steel bar truss manufactured in a factory. It is made of concrete of superimposed layer after the precast thin plate is hoisted and put in place. It does not need temporary support and die support during construction, and it has the characteristics of two-stage manufacture and secondary force. In this paper, the mechanical behavior of reinforced truss reinforced concrete composite slabs with ribs in construction stage and normal service stage is studied experimentally. It is found that when the short-term stiffness of prefabricated slabs in the composite slabs meets the requirements of the code, The bearing capacity of laminated plates in service stage can meet the requirements, and the deflection is far less than the limit value of the specification. By changing various parameters of ANSYS, the influence of each parameter on its mechanical performance is determined. The analysis shows that the concrete rib height has the most obvious influence on the short-term stiffness of the prefabricated slab, followed by the rib width, and the steel truss takes part in the whole force of the floor slab. The height of the truss and the upper, lower chord steel bar diameter have great influence on the short-term stiffness of the two stages, and the web bar diameter has little effect on the short-term stiffness of the prefabricated board and the composite plate, so the design only needs to meet the structural requirements. The selection of concrete composite floor slabs with ribbed steel truss under common span and its economical and applicable span are obtained. Finally, combining the test data and finite element analysis, based on the assumption of plane section, considering the contribution of steel truss and concrete rib to the section stiffness of prefabricated slab, the theoretical derivation is carried out through a certain simplified assumption. A formula for calculating the short term stiffness and bearing capacity of reinforced truss reinforced concrete composite floor slabs with ribs in construction and normal service stages is presented.
【學(xué)位授予單位】：西安建筑科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU375

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