房建材料及制品_2020_《混凝土與水泥制品》雜志社

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發布時間：2020-01-06 00:00:00

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房建材料及制品

基于不同連接技術的裝配式混凝土剪力墻抗震性能研究進展

姚丹丹1，劉文鋒2

2020年第9期

摘要

引用本文

摘 ? 要：研究了裝配式剪力墻的連接技術，探討了水平及豎向接縫結合部位連接形式和鋼筋連接形式，分析了不同連接技術的研究現狀和抗震性能，并對裝配式剪力墻連接技術的發展進行了展望。 Abstract: The connection technology of prefabricated shear wall is studied, and the horizontal and vertical seam binding site connection form and the reinforced connection form are discussed, and the research status and seismic performance of different connection technologies are analyzed, and the development of prefabricated shear wall connection technologies is prospected.

姚丹丹,劉文鋒.基于不同連接技術的裝配式混凝土剪力墻抗震性能研究進展[J].混凝土與水泥制品,2020(9):68-73. YAO D D,LIU W F.Research Progress on Seismic Performance of Prefabricated Concrete Shear Walls Based on Different Connection Technologies[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(9):68-73.

鋼筋桁架混凝土疊合板底板吊裝受力性能分析

姚一辰1，韓普各2

2020年第9期

摘要

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摘 ? 要：通過疊合板脫模、吊裝荷載的理論計算，建立了有限元模型，利用理論計算驗證了有限元模型的正確性，得到基于共節點模型以對疊合板進行較真實的仿真模擬。討論了吊繩、節間、懸挑長度、板寬及吊環等影響疊合板吊裝的主要因素，在最不利工況下分析了各因素對疊合板受力性能的影響。 Abstract: Through the theoretical calculation of the demoulding and hoisting load of composite slab, the finite element model is established. The correctness of the finite element model is verified by the theoretical calculation. The model based on the common node can simulate the composite slab more realistically. The main factors that affect the hoisting of the composite slab, such as the lifting rope, the internode, the cantilever length, the width of slab and the hoisting lug are discussed. Under the most unfavorable condition, the influence of various factors on the mechanical properties of composite slabs is analyzed.

姚一辰,韓普各.鋼筋桁架混凝土疊合板底板吊裝受力性能分析[J].混凝土與水泥制品,2020(9):62-67. YAO Y C,HAN P G.Analysis of Mechanical Performance of Reinforced Concrete Composite Slabs with Steel-bar Truss[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(9):62-67.

輕質混凝土夾芯復合墻板傳熱系數研究與工程應用

尚仁杰1，楊瀟1，侯兆新1，寅志強1，孫小曦2

2020年第9期

摘要

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摘 ? 要：蒸壓加氣混凝土與巖棉復合的圍護墻板是一種新型的建筑圍護結構板材，不需要附加保溫層就可滿足寒冷地區的熱工要求。GB 50176—2016《民用建筑熱工設計規范》就如何計算圍護墻板的熱工參數給出了計算方法，但需要相鄰部分熱阻比值不大于1.5，當熱阻比值大于1.5時需要通過傳熱有限元計算考慮熱橋的影響，給傳熱系數計算帶來困難?；诖?，提出了一種傳熱系數的簡化計算方法，借助線性變截面的熱傳導公式，考慮了復合板肋部熱橋影響，以綜合傳熱系數最大為條件，得到了綜合傳熱系數和綜合熱阻。利用所提出的計算方法對某工程外圍護墻板進行了傳熱系數計算，并與有限元計算結果進行了對比，相差僅0.3%，可以滿足工程設計要求。 Abstract: The integrated lightweight composite wallboard made of autoclaved aerated concrete and rock wool panel is a new type of building enclosure system, which can meet the thermal requirements of cold areas in China without additional insulation. GB 50176—2016 The Code for Thermal Design of Civil Buildings gives a thermal calculation method, which requires the thermal resistance ratio of adjacent parts to be less than 1.5, or else it needs to consider the influence of heat bridge by heat transfer finite element calculation. The finite element method brings difficulties to thermal design. Therefore a heat transfer calculation method based on the linear variable cross-section considering the thermal bridge effect of the composite ribs is put forward, and the heat transfer coefficient and thermal resistance of the wallboard are obtained under the condition of maximum heat transfer. The heat transfer coefficient of the composite wallboard is calculated using the method in this paper, and the results are compared with the finite element calculation method, the difference is only 0.3%, which can meet the engineering design requirements.

尚仁杰,楊瀟,侯兆新,等.輕質混凝土夾芯復合墻板傳熱系數研究與工程應用[J].混凝土與水泥制品,2020(9):57-61. SHANG R J,YANG X,HOU Z X,et al.Study and Application of Heat Transfer Coefficient of Lightweight Concrete Sandwich Composite Wallboard[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(9):57-61.

纖維對堿式硫酸鎂水泥泡沫混凝土性能影響

宗京平1，劉潘潘1，吳成友1,2，余紅發1,3

2020年第9期

摘要

引用本文

摘 ? 要：采用化學發泡法制備了堿式硫酸鎂水泥泡沫混凝土（MOSFC），研究了不同摻量的玻璃纖維（GF）和聚丙烯纖維（PP）對MOSFC干密度、導熱系數、孔隙率、體積吸水率、軟化系數和力學性能的影響，并結合XRD、SEM方法分析了其作用機理。結果表明，GF和PP的加入能夠提高MOSFC的強度，且二者的最佳摻量分別為0.5%和1.5%；GF和PP在改善MOSFC力學性能的同時增大了干密度和導熱系數，降低了保溫性能；摻加1.0%的GF能有效改善MOSFC的抗水性能，但PP對MOSFC的抗水性能不利。 Abstract: The chemical foaming method was used to prepare magnesium oxysulfide cement foam concrete(MOSFC), and the effects of glass fiber(GF) and polypropylene fiber(PP) content on the dry density, thermal conductivity, porosity, volumetric water absorption, softening coefficient and mechanical properties of basic magnesium sulfate cement foam concrete were studied, and the mechanism was analyzed by XRD and SEM. The results show that the addition of GF and PP can increase the strength of MOSFC, and the optimal dosage of GF and PP is 0.5% and 1.5%, respectively. The addition of GF and PP can increase the dry density and thermal conductivity while improving the mechanical properties, and the thermal insulation performance decrease. Adding 1%GF can effectively improve the water resistance of MOSFC, but PP is detrimental to the water resistance of MOSFC.

宗京平,劉潘潘,吳成友,等.纖維對堿式硫酸鎂水泥泡沫混凝土性能影響[J].混凝土與水泥制品,2020(9):52-56,73. ZONG J P,LIU P P,WU C Y,et al.Study of Fiber on Performance of Magnesium Oxysulfide Cement Foam Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(9):52-56,73.

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