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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

    秸稈夾芯復合外掛墻板的制備及抗風承載力研究
    秸稈夾芯復合外掛墻板的制備及抗風承載力研究
    • 肖力光,李紀良
    2021年第6期
    摘要
    引用本文
    摘 ? 要:利用秸稈纖維、粉煤灰及硅藻土制備了夾芯復合外掛墻板,研究了秸稈纖維長度、粉煤灰和硅藻土協同作用對秸稈水泥基材料力學性能的影響,確定了粉煤灰及硅藻土的預處理方式,通過正交試驗確定了粉煤灰、硅藻土取代水泥的最佳取代率及水灰比;利用ANSYS有限元軟件對秸稈夾芯復合外掛墻板的抗風承載力進行了數值模擬,分析了不同墻板厚度及鋼絲含量對秸稈夾芯外掛墻板抗風承載力的影響。結果表明:隨著秸稈纖維摻量的增加,試件抗壓強度逐漸下降,其中,秸稈纖維長度為5~10 mm時,秸稈水泥基材料的力學性能最佳;粉煤灰、硅藻土的最佳取代率分別為10%、4%,最佳水灰比為0.48;秸稈夾芯外掛墻板的抗風承載力滿足規范要求,增加墻板厚度及改變鋼絲布置方式均能提高秸稈夾芯復合外掛墻板的抗風承載力,且改變鋼絲布置對抗風承載力的影響顯著。 Abstract: The straw fiber, fly ash and diatomite were used to prepare sandwich composite external wallboard, and the effect of straw fiber length, fly ash and diatomite on the properties of straw cement-based materials was studied, and the ?preprocessing method of fly ash and diatomite was determined. The optimal replacement rate of fly ash and diatomite to replace cement and water-cement ratio were determined by orthogonal test. The wind resistance bearing capacity of straw sandwich composite wallboard was simulated by ANSYS software, and the influence of wall thickness and steel wire content on the wind resistance bearing capacity of straw sandwich external wallboard was analyzed. The results show that with the increase of the straw fiber content, the compressive strength decreases gradually. When the straw fiber length is 5~10 mm, the mechanical properties of straw cement-based materials are the best. The optimal replacement rate of fly ash and diatomite is 10% and 4% respectively, and the optimal water-cement ratio is 0.48. The wind resistance bearing capacity of straw sandwich external wallboard meets the requirements of the code. The wind resistance bearing capacity of straw sandwich external wallboard can be improved by increasing the wallboard thickness and changing the steel wire arrangement, and the effect of changing the steel wire arrangement on the wind resistance bearing capacity is significant.
    肖力光,李紀良.秸稈夾芯復合外掛墻板的制備及抗風承載力研究[J].混凝土與水泥制品,2021(6):65-69. XIAO L G,LI J L.Preparation and Wind Resistance Bearing Capacity of Straw Sandwich External Wall Panels[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(6):65-69.
    矩形螺旋箍筋混凝土短柱力學性能試驗研究
    矩形螺旋箍筋混凝土短柱力學性能試驗研究
    • 魏興娜,李江華,徐 曉,郝文秀
    2021年第6期
    摘要
    引用本文
    摘 ? 要:設計制作了5根配置矩形螺旋箍筋的混凝土短柱和3根配置普通箍筋的混凝土短柱,研究了混凝土強度、箍筋間距對構件極限承載力、力學性能的影響,在試驗的基礎上,利用ANSYS有限元軟件對混凝土短柱進行了靜力非線性分析。結果表明:與普通箍筋混凝土短柱相比,矩形螺旋箍筋混凝土短柱的極限承載力和抗變形能力有所提高;箍筋間距越小,其對混凝土短柱的約束效果越好;混凝土強度等級越高,構件的極限承載力越大;有限元分析結果與試驗結果基本一致。 Abstract: Five concrete short columns with rectangular spiral stirrups and three concrete short columns with ordinary stirrups were designed, and the effects of concrete strength and stirrup spacing on the ultimate bearing capacity and mechanical properties of concrete short columns were studied. Based on the test, the static nonlinear analysis of concrete short columns was carried out by using ANSYS finite element software. The results show that compared with concrete short columns with ordinary stirrups, the ultimate bearing capacity and anti deformation capacity of concrete short columns with rectangular spiral stirrups are improved. The smaller the stirrup spacing, the better the restraint effect. The higher the concrete strength grade, the greater the ultimate bearing capacity. ?The analysis results are basically consistent with the test results.
    魏興娜,李江華,徐曉,等.矩形螺旋箍筋混凝土短柱力學性能試驗研究[J].混凝土與水泥制品,2021(6):70-75. WEI X N,LI J H,XU X,et al.Experimental Study on Mechanical Properties of Concrete Short Columns with Rectangular Spiral Stirrups[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(6):70-75.
    膨脹劑摻量及套箍系數對鋼管混凝土軸壓柱承載力的影響
    膨脹劑摻量及套箍系數對鋼管混凝土軸壓柱承載力的影響
    • 程阿青1, 劉驍帆2, 胡 浪2, 曹新明3
    2021年第6期
    摘要
    引用本文
    摘 ? 要: 通過18根外徑分別為219 mm和273 mm試件的軸壓試驗及227根試件的有限元模擬分析,探討了膨脹劑摻量及套箍系數對試件承載力的影響。結果表明:添加膨脹劑后,初始緊箍力增大,鋼管和混凝土迅速進入協同工作狀態,有效提高了鋼管混凝土的承載力;膨脹劑摻量過大會導致鋼管混凝土的橫向應力增加,承載力降低;當膨脹劑摻量為5%時,屈服承載力和極限承載力的提高幅度最大,分別為11.9%和49.85%;添加膨脹劑的鋼管混凝土柱承載力及延性隨著套箍系數的增加而提高;提出的承載力計算公式可滿足工程實際應用。 Abstract: Through the axial compression test of 18 specimens with 219 mm and 273 mm outer diameter and the finite element simulation analysis of 227 specimens, the influence of expansive agent content and hoop coefficient on the bearing capacity of the specimens was discussed. The results show that after adding expansive agent, the initial hoop force increases, the steel tube and concrete quickly enter the cooperative working state, and the bearing capacity of concrete filled steel tube is effectively improved. When the expansive agent content is too large, the transverse stress of concrete filled steel tube increases and the bearing capacity decreases. When the expansive agent content is 5%, the yield bearing capacity and ultimate bearing capacity increase by 11.9% and 49.85% respectively. The bearing capacity and ductility of concrete filled steel tube columns with expansive agent increase with the increase of stirrup coefficient. The calculation formula of the bearing capacity can meet the engineering application.
    程阿青,劉驍帆,胡浪,等.膨脹劑摻量及套箍系數對鋼管混凝土軸壓柱承載力的影響[J].混凝土與水泥制品,2021(6):76-79,84. CHENG A Q,LIU X F,HU L,et al.Influence of Expansive Agent Content and Hoop Coefficient on Bearing Capacity of Concrete Filled Steel Tube Columns Under Axial Compression[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(6):76-79,84.
    裝配式墻板BIM模型自動生成的二次開發研究
    裝配式墻板BIM模型自動生成的二次開發研究
    • 施丁平1,孫 豐1,李 樊2,汪德江2,朱 江2
    2021年第6期
    摘要
    引用本文
    摘 ? 要:采用Revit二次開發技術,對PC裝配式墻板的BIM模型自動生成功能進行了研究。根據墻板的各種參數,建立了墻板外形與配筋的BIM模型,實現了裝配式墻板一鍵參數化建模,為裝配式與BIM的結合提供了快速生成BIM模型的技術與方法。 Abstract: Using the secondary development technology of Revit, the BIM model automatic generation function of the prefabricated wall was studied. According to various parameters of the wall, the BIM model of the shape and reinforcement of the wall can be generated, which provides a technique and method for rapid generation modeling for the combination of prefabricated building and BIM.
    施丁平,孫豐,李樊,等.裝配式墻板BIM模型自動生成的二次開發研究[J].混凝土與水泥制品,2021(6):80-84. SHI D P,SUN F,LI F,et al.Research on Secondary Development of Prefabricated Walls Based on BIM[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(6):80-84.
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