房建材料及制品_2020_《混凝土與水泥制品》雜志社

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房建材料及制品

預制混凝土內墻板立模生產工藝研究與應用

趙志剛1，楊思忠2，任成傳1，王文歡1，劉蘊哲1，王志禮1，王群1，董鐵良1

2020年第12期

摘要

引用本文

摘 ? 要：結合開發的自動化成組立模設備，研究并優化了快速組模、預埋件定位、模板變形和漏漿控制、澆筑振搗和自動養護等關鍵工藝環節，解決了預制混凝土內墻板立模生產的技術難題。通過工程應用，說明了立模生產的內墻板相比平模在質量上有明顯提升。采用立模除了可節省空間外，生產效率大大提高，能耗明顯降低，社會和經濟效益顯著。 Abstract: In combination with the developed automatic group vertical mold equipment, the key technologies such as rapid mold forming, embedded part positioning, formwork deformation and slurry leakage control, casting and vibration,automatic curing are studied and optimized, and the technical difficulties in precast concrete inner wall panel manufacturing technique by using the vertical mold are solved. Through the engineering application, it is shown that the quality of the inner wall panel produced by the vertical mold is significantly improved compared with that of the flat mold.In addition to greatly saving space, the use of the vertical mold greatly improves production efficiency, significantly reduces energy consumption, and has significant social and economic benefits.

趙志剛,楊思忠,任成傳,等.預制混凝土內墻板立模生產工藝研究與應用[J].混凝土與水泥制品,2020(12):59-62. ZHAO Z G,YANG S Z,REN C C,et al.Research and Application of Precast Concrete Inner Wall Panel Manufacturing Technique by Using the Vertical Mold[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(12):59-62.

夾心保溫外墻板用不銹鋼拉結件抗剪承載力研究

鄭旭1，鄭勇2，劉海成3，劉歡2

2020年第12期

摘要

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摘 ? 要：基于ABAQUS有限元模擬分析軟件對不同厚度與尺寸的18組板型不銹鋼拉結件進行了模擬，通過數值計算分析的方法確定了其抗剪承載力，得出了板型拉結件應力發展過程。結果表明：板型不銹鋼拉結件具有較大的平面內抗剪承載能力，當拉結件尺寸相同時，其抗剪承載力隨厚度的增加而增大；同厚度、同高度的不銹鋼拉結件的長度越大，抗剪承載力越大；同厚度、同長度的不銹鋼拉結件，隨著高度的增加，其抗剪承載力變化不大；設計中可以屈服強度為基準，安全系數取3.0，確定板型不銹鋼拉結件的允許剪切強度。 Abstract: Based on ABAQUS finite element simulation software, 18 groups of stainless steel tie-in pieces with different thickness and size were simulated, and their shear capacity was determined by numerical calculation and analysis, and the stress development process of the plate type stainless steel tie-in parts was obtained. The results show that the plate type stainless steel tie-in parts have large in-plane shear bearing capacity. When the size of the tie-in parts is the same, the shear bearing capacity increases with the increase of the thickness. The longer the stainless steel tie-in pieces of the same thickness and height, the greater the shear bearing capacity. When the thickness and length of stainless steel pull-out pieces are the same, the shear bearing capacity has little change with the increase of height. The yield strength can be taken as the basis in the design, and the safety factor is taken as 3.0 to determine the allowable shear strength of plate type stainless steel tie-in parts.

鄭旭,鄭勇,劉海成,等.夾心保溫外墻板用不銹鋼拉結件抗剪承載力研究[J].混凝土與水泥制品,2020(12):63-67. ZHENG X,ZHENG Y,LIU H C,et al.Study on Shearing Capacity of Stainless Steel Connector with Sandwich Wall [J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(12):63-67.

十字型ECC框架節點在循環荷載下的抗震性能分析

丁捷，周旭，黃可

2020年第12期

摘要

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摘 ? 要：通過選取典型的足尺試驗模型，從其骨架曲線、荷載及位移等方面進行了ABAQUS驗證，從而得出有限元計算的可靠性?；诖?，進行了高軸壓比（0.5、0.7、0.9）下十字型ECC框架節點在循環荷載下的抗震性能分析。結果表明：設計軸壓比為0.9時框架節點易出現嚴重的節點核心區剪切破壞，耗能相比于0.5軸壓比下降了約11.2%，出現嚴重的塑性變形；0.5軸壓比下位移延性系數μ達到了5.37，所有試件μ均值達到了3.0以上，破壞模型均為延性破壞。 Abstract: The typical full-scale test models were selected and verified by ABAQUS software from the aspects of skeleton curve, load and displacement, so as to obtain the reliability of the finite element method. Based on this, the seismic behavior of ECC frame joints with high axial compression ratio (0.5, 0.7, 0.9) under cyclic load was analyzed. The results show that when the design axial compression ratio is 0.9, the frame joints are prone to serious shear failure in the core area, and the energy consumption is about 11.2% lower than that of the 0.5 axial compression ratio, which leads to serious plastic deformation. When the design axial compression ratio is 0.5, μ reaches 5.37, and the average μ of all specimens reaches above 3.0, and the failure mode is ductile failure.

丁捷,周旭,黃可.十字型ECC框架節點在循環荷載下的抗震性能分析[J].混凝土與水泥制品,2020(12):68-72. DING J,ZHOU X,HUANG K.Seismic Performance Analysis of Cross ECC Frame Joints Under Cyclic Load [J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(12):68-72.

不同等級砂加氣混凝土碳化性能研究

薛小雨1，楊萍1，李軍奇1，劉洋1，何廷樹2，許榮盛2，陳暢2

2020年第12期

摘要

引用本文

摘 ? 要：采用碳化深度測量、SEM、XRD等手段，在特定的環境下研究了不同等級砂加氣混凝土的碳化性能和力學性能。結果表明：由于砂加氣混凝土水化生成的托貝莫來石逐漸轉變為方解石，砂加氣混凝土的抗壓強度隨著碳化深度的增加而明顯下降。 Abstract: The carbonation performance and mechanical properties of different grades of sand aerated concrete were studied under specific conditions by means of depth measurement, SEM and XRD. The results show that the compressive strength of sand aerated concrete decreases obviously with the increase of carbonation depth because of the tobermorite formed by hydration of sand aerated concrete gradually transforms into calcite.

薛小雨,楊萍,李軍奇,等.墻體材料蓄放熱性能動態測試方法[J].混凝土與水泥制品,2020(12):73-75,95. XUE X Y,YANG P,LI J Q,et al.Study on Carbonation Performance of Different Grades of Sand Aerated Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(12):73-75,95.

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