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    蘇州混凝土水泥制品研究院有限公司

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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

    裝配式混凝土框架柱連接節點研究進展
    裝配式混凝土框架柱連接節點研究進展
    • 姚 兵1,朱張峰1,劉德源1,2,杜 詠1
    2020年1期 ? No.285 ? P59-64
    摘要
    引用本文
    摘要:裝配式混凝土結構由于質量可靠、生產效率高、抗震性能好,近年來在國內得到快速發展??蚣苤鳛榭蚣芙Y構的重要受力構件,預制柱之間的連接節點則更是其關鍵部位,節點連接的受力可靠性將決定整體結構的抗震能力,節點連接的構造合理性將影響施工效率與質量。結合近年來國內外裝配式混凝土框架柱連接節點領域的發展概況,從試驗研究與數值模擬兩方面進行總結,并分析了仍然存在的問題及未來發展方向,為我國裝配式混凝土框架結構的發展提供參考。
    Abstract: The prefabricated concrete structure developed rapidly in China in recent years due to its reliable quality, high production efficiency and good seismic performance. As the important force-bearing member of the frame structure, the frame column is the key part of the prefabricated column. The reliability of the joint connection will determine the seismic capacity of the whole structure. The structural rationality of the joint connection can affect the construction efficiency and quality. Combining with the development situation of fabricated concrete frame column connection joints at home and abroad in recent years, the experimental research and numerical simulation are summarized, and the existing problems and future development direction are analysed, which can provide a reference for the development of fabricated concrete frame structures in China.
    尤志國,王璐,劉佳星.多尺寸纖維透水混凝土性能試驗研究[J].混凝土與水泥制品,2020(1):55-58.
    YOU Z G,WANG L,LIU J X.Experimental Study on the Performance of Multi Size Fiber Permeable Concrete [J].China Concrete and Cement Products,2020(1):55-58.
    裝配式建筑預制輕質保溫墻體系統設計與性能研究
    裝配式建筑預制輕質保溫墻體系統設計與性能研究
    • 於林鋒,管 文,樊俊江
    2020年1期 ? No.285 ? P65-68+72
    摘要
    引用本文
    摘要:以輕骨料混凝土技術為基礎,開展裝配式建筑預制輕質保溫墻體系統設計,并對保溫墻體系統性能進行了綜合測試分析。研究結果表明:與相同強度等級的普通混凝土相比,輕骨料混凝土保溫墻體的防水性能不及普通混凝土,其與FRP拉接件的抗拉拔承載力和抗剪承載力分別降低了12%和13%,系統自重減輕了23%;設計了由輕骨料混凝土內葉墻板100 mm、XPS保溫板40 mm、輕骨料混凝土外葉墻板55 mm和面磚飾面層組成的預制輕骨料混凝土夾心保溫外掛墻板系統,可滿足65%的建筑節能設計要求和防水要求。
    Abstract: Based on the technology of lightweight aggregate concrete, the design of precast lightweight thermal insulation wall system for prefabricated buildings was carried out, and the performance of thermal insulation wall system was comprehensively tested and analyzed. The results show that the waterproofing performance of lightweight aggregate concrete insulation wall is inferior to that of ordinary concrete in the same strength grade. The pull-out and shear bearing capacity of lightweight aggregate concrete insulation wall and its FRP connectors are reduced by 12% and 13%, respectively, and the weight of the system can be reduced by 23%. The design of lightweight aggregate concrete inner-leaf wall board is 100 mm, XPS insulation board is 40 mm, and lightweight aggregate concrete outer-leaf wall board is 55 mm. The prefabricated lightweight aggregate concrete sandwich thermal insulation external wall panel system composed of face brick decoration layer can meet 65% of the building energy saving design requirements and waterproof requirements.
    於林鋒,管文,樊俊江.裝配式建筑預制輕質保溫墻體系統設計與性能研究[J].混凝土與水泥制品,2020(1):65-68+72.
    YU L F,GUAN W,FAN J J.Design and Research on Precast Lightweight Insulation Wall System of Prefabricated Buildings[J].China Concrete and Cement Products,2020(1):65-68+72.
    鋁酸鹽水泥基砂漿抗分散性研究
    鋁酸鹽水泥基砂漿抗分散性研究
    • 高禮雄,崔 皓
    2020年1期 ? No.285 ? P69-72
    摘要
    引用本文
    摘要:選用m(鋁酸鹽水泥)∶m(普通硅酸鹽水泥)∶m(水石膏)= 85%∶4%∶11%的三元膠凝體系,通過控制凝結時間制備出了自流平水下抗分散鋁酸鹽水泥基砂漿。通過測試其水陸強度、pH值、濁度并結合SEM微觀分析,探究了鋁酸鹽水泥基砂漿抗分散性。結果表明,通過酒石酸和葡萄糖酸鈉雙摻解決了鋁酸鹽水泥基砂漿流動度損失大的問題。再生乳膠摻量增加優化了砂漿的抗分散能力。通過模擬水下現場澆筑,發現水下成型的鋁酸鹽水泥基砂漿試件的28 d抗壓強度均在70 MPa以上,形成了控制凝結時間的水下成型制備技術。SEM揭示控制凝結時間的澆筑技術,水下成型的鋁酸鹽水泥砂漿試件內部密實、孔隙率低。
    Abstract: A ternary cementing system of m(aluminate cement)∶m(ordinary portland cement)∶m(water gypsum) = 85%∶4%∶11% was used to control the setting time to produce a self-leveling water dispersion resistant aluminate cement-based mortar. The anti-dispersibility of aluminate cement-based mortar was explored by testing its water and land strength, pH value, turbidity and SEM microanalysis. The results show that the problem of large fluidity loss of aluminate cement-based mortar is solved by double mixing of tartaric acid and sodium gluconate. Increasing the amount of recycled latex optimizes anti-dispersion ability of the mortar. By simulating underwater in-situ pouring, the aluminate cement-based mortar specimens molded under water at 28 days has a compressive strength of more than 70 MPa, forming an underwater molding preparation technology to control the setting time. SEM reveals the pouring technology that controls the setting time, and the aluminate cement mortar specimens formed underwater are compact and have low porosity.
    高禮雄,崔皓.鋁酸鹽水泥基砂漿抗分散性研究[J].混凝土與水泥制品,2020(1):69-72.
    GAO L X,CUI H.Study on Anti-dispersion of Aluminate Cement Based Mortar[J].China Concrete and Cement Products,2020(1):69-72.
    沖擊荷載作用下鋼筋混凝土梁力學特性
    沖擊荷載作用下鋼筋混凝土梁力學特性
    • 葛文慧
    2020年1期 ? No.285 ? P73-77+91
    摘要
    引用本文
    摘要:為研究RC梁在沖擊荷載作用下的力學特性,以混凝土強度、縱筋與箍筋配筋率、沖擊體的沖擊速度以及RC梁的跨度為主要參數對RC梁在沖擊作用下的力學性能進行了數值分析,通過與已有試驗結果對數值模型進行標定,獲取了沖擊力時程曲線、位移時程曲線以及破壞形態,驗證了數值結果的正確性。分析結果表明,混凝土強度主要影響RC梁的破壞形態;縱筋配筋率對RC梁跨中位移影響較大;沖擊體速度會同時對RC梁的破壞區域和跨中位移產生影響;RC梁跨度不僅會改變梁跨中位移也會改變梁的振動頻率與反彈速度。
    Abstract: In order to study the mechanical properties of RC beams subjected to impact loads, the mechanical properties of RC beams subjected to impact loads were numerically analyzed by taking concrete strength, ratio of longitudinal reinforcement to stirrup reinforcement, impact velocity of impact body and span of RC beams as main parameters. The numerical models were calibrated with the existing experimental results, and the impact force time history curve, displacement time history curve and breakage were obtained, and the correctness of the numerical results was verified. The results show that the concrete strength mainly affects the failure mode of RC beams. The reinforcement ratio of longitudinal bars has a great influence on the mid-span displacement of RC beams. The impact velocity also affect the damage area and mid-span displacement of RC beams. The span of RC beams can not only change the mid-span displacement of beams, but also change the vibration frequency and rebound speed of beams.
    葛文慧.沖擊荷載作用下鋼筋混凝土梁力學特性數值研究[J].混凝土與水泥制品,2020(1):73-77+91.
    GE W H.Numerical Study on Mechanical Properties of Reinforced Concrete Beams under Impact Loads[J].China Concrete and Cement Products,2020(1):73-77+91.
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