房建材料及制品_2021_《混凝土与水泥制品》杂志社

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房建材料及制品

装配式整体轻质内隔墙在建筑工业化中的研究与应用

王铁柱，杨飞华，赵炜璇，高志杰

2012年第12期

摘要

引用本文

摘要：传统内隔墙通过块材砌筑，以加气条板、空心板、轻钢龙骨为主，多采用人工安装，施工效率较低，且后期存在裂缝等质量问题。结合具体工程案例，以建筑工业化为方向，采用新型立模、轻质混凝土技术，进行了整体轻质内隔墙的研制和应用，实现了产品尺寸定制化和流水线生产，同时，在工厂内预埋管线，实现了现场机械化安装、与梁板柱同步施工，不仅提高了施工效率，而且有效解决了传统内隔墙存在的裂缝等质量问题，且研制的装配式整体轻质内隔墙的隔声性能优于传统内隔墙。 Abstract: The traditional internal partition wall is built by block materials, mainly with aerated slats, hollow slabs, and light steel keels, and manual installation is the main method. The construction efficiency is low, and there are quality problems such as cracks in the later stage. Combined with specific engineering cases, taking the construction industrialization as the direction, adopting new vertical form and lightweight concrete technology, the overall lightweight internal partition wall is developed and applied, and the product size customization and assembly line production are realized. At the same time, the pipelines are embedded in the factory to realize on-site mechanized installation and synchronous construction with beams, plates and columns, which not only greatly improves the construction efficiency, but also fundamentally solves the quality problems such as cracks existing in the traditional internal partition wall, and the sound insulation performance of the prefabricated integral lightweight internal partition wall is better than that of the traditional internal partition wall.

王铁柱,杨飞华,赵炜璇,等.装配式整体轻质内隔墙在建筑工业化中的研究与应用[J].混凝土与水泥制品,2021(12):75-78,83. WANG T Z,YANG F H,ZHAO W X,et al.Research and Application of Prefabricated Integral Lightweight Internal Partition Wall in Building Industrialization[J].China Concrete and Cement Products,2021(12):75-78,83.

压-扭作用下中空夹层钢管混凝土的破坏机理分析

廖栩，李吉人，王庆利

2021年第12期

摘要

引用本文

摘要：为了分析中空夹层钢管混凝土在压-扭复合受力下的破坏机理，对24根中空夹层钢管混凝土进行了压-扭静力试验，分析了受力全过程中中截面应变的开展规律及轴力对扭转刚度的影响，并通过扭转变形各阶段中截面横向应变与剪应变的开展，分析了轴力对外钢管约束效应的影响。结果表明：轴压比较大时，扭矩-转角（T-θ）曲线在弹性范围内出现明显的拐点，轴力提高了初始抗扭刚度；圆中空夹层钢管混凝土中截面不同位置处的扭矩-应变（T-ε）曲线重合度较高，相较于方形截面，其对内部结构的约束更均匀；扭矩加载初期，方形截面外钢管角部与中部的环向应变及剪应变相近，加载后期，中部的剪应变大于角部，角部的环向应变大于中部，表明角部出现应力集中，对内部结构的约束效应更明显，同时受力全过程中角部的相互作用力均大于中部。 Abstract: In order to analyze the failure mechanism of the concrete filled double skin steel tube(CFDST) under compression and torsion, the compression-torsion static test was carried out on 24 pieces of concrete filled double skin steel tubes. The strain development of the middle section during the whole process and the effect of the axial force on the torsional stiffness were analyzed. Through the development of hoop strain and shear strain of middle section in each stage of torsional deformation, the influence of axial force on restraint effect of the outer steel tube was analyzed. The results show that when the axial compression ratio is relatively large, the T-θ curve has an obvious inflection point in the elastic stage, and the axial force increases the initial torsional stiffness. The circular CFDST has a higher degree of coincidence of the T-ε curves at different positions of the middle section, and compared with the square outer tube, it has a more uniform restraint effect on the internal structure. At the beginning of torque loading, the hoop strain and shear strain at the corner of the outer steel tube with square cross-section are similar to the middle. At the later stage of torque loading, the shear strain in the middle is greater than that in the corner, but the hoop strain in the corner is greater than that in the middle, which shows that there is stress concentration in the corner, and the restraint effect on the internal structure is obvious. At the same time, the interaction force of the corner is greater than that of the middle during the whole process.

廖栩,李吉人,王庆利.压-扭作用下中空夹层钢管混凝土的破坏机理分析[J].混凝土与水泥制品,2021(12):67-74. LIAO X,LI J R,WANG Q L.Analysis of the Failure Mechanism of Concrete Filled Double Skin Steel Tube Under Compression-torsion[J].China Concrete and Cement Products,2021(12):67-74.

新型PKG叠合板抗弯性能试验研究及有限元分析

金鸿鑫，陆琨，陶忠，房强，何颖成

2021年第12期

摘要

引用本文

摘要：对矩形肋叠合板构件和T形肋叠合板构件进行了均布加载试验，研究了各构件在受力过程中刚度、跨中挠度和裂缝的变化规律，对比分析了各部件的荷载-应变曲线，并得到了构件的开裂荷载和极限承载力。结果表明：叠合板件的力学性能受底板肋部形式的影响较大；相同跨度下，T形肋叠合板件的受力性能优于矩形肋叠合板件；两种肋形式的叠合板件均为受弯破坏，延性良好。T形肋预制底板的有限元分析结果表明，增加T形肋的腹板高度可明显提高构件的抗弯承载力；构件肋孔间的混凝土出现水平方向的贯通裂缝，表明肋孔间混凝土的破坏形式主要为剪切型破坏。 Abstract: Uniform loading tests were carried out on rectangular rib and T-shaped rib composite plates respectively, and the variation laws of stiffness, mid span deflection and cracks of each component during the loading process were studied, and the load-strain curves of each component were compared and analyzed, and the cracking load and ultimate bearing capacity of the component were obtained. The results show that the mechanical properties of the composite plates are greatly affected by the rib form of the bottom plate. Under the same span, the mechanical performance of T-shaped rib is better than that of rectangular rib. The composite plates with two kinds of ribs are flexural failure and have good ductility. The finite element analysis results of T-shaped rib precast floor show that increasing the web height of T-shaped rib can significantly improve the flexural capacity of the component. Horizontal through cracks appear in the concrete between the rib holes, which indicates that the failure mode of the concrete between the rib holes is mainly shear failure.

金鸿鑫,陆琨,陶忠,等.新型PKG叠合板抗弯性能试验研究及有限元分析[J].混凝土与水泥制品,2021(12):59-66,74. JIN H X,LU K,TAO Z,et al.Experimental Study and Finite Element Analysis on Bending Properties of New PKG Composite Plates[J].China Concrete and Cement Products,2021(12):59-66,74.

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