第八期_2020_《混凝土与水泥制品》杂志社

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第八期

基于节能环保理念的绿色建筑设计 ——评《绿色建筑设计及运行关键技术》

葛琳

2020年第8期

摘要

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据国际能源消耗数据显示，建筑能耗与碳排量占世界总能耗及碳排放的39%，于是，绿色建筑应运而生。绿色建筑的本质是将人工建筑和自然环境视为一个有机整体，在使建筑对自然生态的破坏降至最低的同时，通过充分利用自然环境资源，实现建筑的使用、审美、文化等各项功能。2018年，张宝刚等人编著的《绿色建筑设计及运行关键技术》以经济效益、环境效益和社会效益为原则，依循绿色建筑全寿命周期，结合理论阐述与案例解析，从建筑节地、建筑节能、建筑节水、建筑节材、室内环境、建筑运营与管理等方面，介绍了绿色建筑的设计理念、设计原则、设计方法、模拟分析、成本收益、生态效率，探究了涵盖暖通空调、进水排水、场地组织、建筑结构、再生建材、室内外环控、智能管理、装配式建筑等绿色化关键技术。笔者基于本书的学习，认为其内容详实、言简意赅，扩展了读者在建筑节能方面的视野，尤其是以下几个方面值得广大读者关注。

葛琳.基于节能环保理念的绿色建筑设计——评《绿色建筑设计及运行关键技术》[J].混凝土与水泥制品,2020(8):97.

装配式混凝土构件的生产与质量管理 ——评《装配式混凝土新型构件生产与质量控制关键技术》

郑永娟

2020年第8期

摘要

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陶粒掺量对透水混凝土性能影响研究

李骁男1，朱跃华2，辛晓斌1，马炎1，张茂亮1，李建伟1，万成亮1

2020年第8期

摘要

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摘要：研究了陶粒掺量对透水混凝土孔隙率、抗压强度、透水性能及抗冻性能的影响。结果表明，随着陶粒掺量的增加，透水混凝土的连续孔隙率、透水系数逐渐增大，抗压强度逐渐减小。当陶粒掺量为30％时，透水系数最大，达到了3.10 mm/s，此时抗压强度为11.7 MPa。经过25次冻融循环后，当陶粒掺量达25%以上时，透水混凝土发生冻融破坏。 Abstract: The influence of ceramic content on the measured porosity, mechanical properties, water permeability and frost resistance of pervious concrete was studied. The results show that the measured porosity and permeability coefficient of pervious concrete increase gradually with the increase of ceramic content, while the compressive strength decreases. when the ceramic content is 30%, the water permeability coefficient is the largest, reaching 3.10 mm/s, and the compressive strength is 11.7 MPa. After 25 freeze-thaw cycles, when the ceramic content is 25% or more, the pervious concrete is damaged by freezing and thawing.

李骁男,朱跃华,辛晓斌,等.陶粒掺量对透水混凝土性能影响研究[J].混凝土与水泥制品,2020(8):92-94. LI X N,ZHU Y H,XIN X B,et al.Effect of Ceramsite Content on the Performance of Pervious Concrete[J].China Concrete and Cement Products,2020(8):92-94.

硫酸盐-冻融耦合环境下粉煤灰再生混凝土的耐久性研究

冯琦1，王宇斌2

2020年第8期

摘要

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摘要：研究了不同粉煤灰取代率的再生混凝土在硫酸盐-冻融耦合环境下的质量损失率和相对动弹性模量的变化规律，并采用两参数Weibull函数建立了寿命预测模型。结果表明，在硫酸盐-冻融耦合环境下，随着冻融次数的增加，各组试件的相对动弹性模量和质量均呈现先上升后下降的趋势；当粉煤灰取代率为30%时，试件在硫酸盐-冻融耦合环境下的耐久性最优，最多可经受362次硫酸盐-冻融循环后才会失效。 Abstract: The mass loss rate and relative dynamic elastic modulus of recycled concrete with different replacement rate of fly ash under sulfate-freeze-thaw coupling environment were studied, and the life prediction model was established by using two-parameter weibull function. The results show that the relative dynamic elastic modulus and mass of each group of specimens increase first, and then decrease with the increase of freeze-thaw times under sulfate-freeze-thaw coupling environment. When the replacement rate of fly ash is 30%, the durability of specimens under sulfate-freeze-thaw coupling environment is the strongest, and it will fail only after 362 sulfate-freeze-thaw cycles at most.

冯琦,王宇斌.硫酸盐-冻融耦合环境下粉煤灰再生混凝土的耐久性研究[J].混凝土与水泥制品,2020(8):88-91. FENG Q,WANG Y B.Study of the Durability of Fly Ash Recycled Concrete Under Sulfate-freeze-thaw Coupling Environment[J].China Concrete and Cement Products,2020(8):88-91.

基于冲击波技术的透水混凝土抗冻性能研究

王钢，董玉文，郑磊，卢海龙

2020年第8期

摘要

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王钢,董玉文,郑磊,等.基于冲击波技术的透水混凝土抗冻性能研究[J].混凝土与水泥制品,2020(8):83-87. WANG G,DONG Y W,ZHENG L,et al.Experimental Study on Frost Resistance of Pervious Concrete Based on Impact Elastic Wave Method[J].China Concrete and Cement Products,2020(8):83-87.

预制混凝土管片自动生产线及控制系统介绍

刘锦涛

2020年第8期

摘要

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摘要：为满足国内管片生产企业转型升级的需求，在消化吸收国外预制混凝土管片生产线控制技术的基础上，研发了预制混凝土管片自动化流水生产线，并与传统预制混凝土管片生产线进行了对比，且对预制混凝土管片生产线的发展方向进行了展望。 Abstract: To meet the needs of transformation and upgrading of domestic precast concrete segment production enterprises, on the basis of digesting and absorbing the control technology of foreign precast concrete segment production line, the automatic production line of precast concrete segment is developed, and compared with the traditional precast concrete segment production line. In addition, the development direction of precast concrete segment production line is prospected.

刘锦涛.预制混凝土管片自动生产线及控制系统介绍[J].混凝土与水泥制品,2020(8):81-82. LIU J T.Introduction of Precast Concrete Segment Auto Production Line and Control System[J].China Concrete and Cement Products,2020(8):81-82.

钢管珊瑚混凝土柱-钢梁外加强环节点抗震性能有限元分析

何国瑞1,2，郑云2，吴迈1

2020年第8期

摘要

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摘要：通过ABAQUS有限元分析软件对钢管珊瑚混凝土柱-钢梁外加强环节点模型进行了非线性分析，以珊瑚混凝土强度和轴压比为参数，分析了此类节点的破坏特征、梁端荷载-位移曲线、骨架曲线、刚度退化以及耗能性能。结果表明，不同珊瑚混凝土强度的节点刚度退化趋势相同，随着珊瑚混凝土强度的提高，节点的承载力和累计耗能均逐渐增大，但效果不明显。轴压比越大，累计耗能越小，轴压比在0.2~0.4时，随着轴压比的增加，承载力下降不明显，轴压比大于0.4时，随着轴压比的增加，节点承载力下降迅速。不同参数下的钢管珊瑚混凝土柱-钢梁外加强环节点的滞回曲线均较为饱满，具有很好的抗震性能和耗能能力，有广泛的应用前景。 Abstract: Nonlinear analysis of coral concrete-filled steel tube column-steel beam joints with outer stiffening rings were carried out through ABAQUS finite element analysis software, considering the effect on the strength of coral concrete and axial compression ratio, failure characteristics, load-displacement curve at the end of beam, skeleton curves, stiffness degradation and energy dissipation performance were studied. The results show that the stiffness degradation trend of different coral concrete strength is the same, with the increase of coral concrete strength, the bearing capacity and cumulative energy consumption of the joints increase gradually, but the effect is not obvious. The larger the axial pressure ratio, the smaller the cumulative energy consumption, when the axial pressure ratio is 0.2~0.4, the bearing capacity decreases slowly with the increase of the axial pressure ratio, when the axial pressure ratio is greater than 0.4, the bearing capacity of the joints decreases rapidly with the increase of the axial pressure ratio. The hysteresis curves of coral concrete-filled steel tube column-steel beam joints with outer stiffening rings under different parameters are full, which has good seismic performance, energy dissipation ability, and wide application prospect.

何国瑞,郑云,吴迈.钢管珊瑚混凝土柱-钢梁外加强环节点抗震性能有限元分析[J].混凝土与水泥制品,2020(8):75-80. HE G R,ZHENG Y,WU M.Finite Element Analysis of Seismic Performance of Coral Concrete-filled Steel Tube Column-steel Beam Joints with Outer Stiffening Rings[J].China Concrete and Cement Products,2020(8):75-80.

基于温度-流变关系负温水泥基灌浆料使用温度限值研究

陶成云1，董淑慧1,2，江守恒1，田汉新3, 朱卫中4

2020年第8期

摘要

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摘要：从流变学角度探讨了不同品种不同组分的外加剂和环境温度对负温水泥基灌浆料流变协同作用的影响规律。结果表明，不同外加剂条件下，负温水泥基灌浆料从+20~-10 ℃温度转变过程中，同一剪切速率下剪切应力下降，在+20~-5 ℃温度范围内，灌浆料初始流动度和30 min流动度均随着使用环境温度的降低而增大，当温度达到-10℃时，灌浆料流动度迅速降低，不能满足标准要求。此时，在浆体流变性符合Bingham流体模型的条件下，建议使用温度为-5 ℃。 Abstract: The influence of admixture and ambient temperature on the rheological synergy of sub-zero temperature cementitious grout was discussed from the perspective of rheology. The results show that under the same shear rate, when the temperature changes from +20~-10 ℃, the shear stress of sub-zero temperature cementitious grout with different admixture decreases. Under the temperature ranged from 20~-5 ℃, the initial fluidity and the fluidity at 30 min of grout increase with the decrease of the ambient temperature. When the temperature reaches -10 ℃, the fluidity of grout decreases rapidly and cannot meet the codes requirements. At this time, the rheology of slurry coincided with Bingham fluid model, and the recommended temperature is -5 ℃.

陶成云,董淑慧,江守恒,等.基于温度-流变关系负温水泥基灌浆料使用温度限值研究[J].混凝土与水泥制品,2020(8):71-74. TAO C Y,DONG S H,JIANG S H,Research on the Applied Temperature Limit of Sub-zero Temperature Cementitious Grout Based on Temperature-rheological Relationship[J].China Concrete and Cement Products,2020(8):71-74.

装配式混凝土框架节点抗震研究进展

卢义1，孟书灵2，张平2，王琴2

2020年第8期

摘要

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摘要：对不同连接方式的节点抗震性能数值模拟和试验研究现状进行了归纳，并分析了各种方式的优缺点及今后发展趋势。提出了在多学科交叉运用频繁的背景下，需进一步研究型钢混凝土节点，同时基于“减少震后损失”的设计理念，要注重耗能自复位框架节点的研发。最后指出基于装配式框架节点自身特点，发展高效精准的模拟技术是未来的重要发展趋势。 Abstract: The current state of numerical simulation and experimental research on seismic performance of joints with different connection methods is summarized, and the advantages and disadvantages of various methods and future development trends are analyzed. It is considered that in the context of frequent cross-disciplinary applications, further research on steel reinforced concrete nodes is needed. At the same time, based on the design concept of "reducing post-earthquake losses", it is proposed to pay attention to the research and development of energy-consuming self-centering frame nodes. Finally, it is pointed out that based on the characteristics of the assembled frame nodes, the development of efficient and accurate simulation technology is an important development trend in the future.

卢义,孟书灵,张平.装配式混凝土框架节点抗震研究进展[J].混凝土与水泥制品,2020(8):65-70. LU Y,MENG S L,ZHANG P.Research Progress on Seismic Performance of Prefabricated Concrete Frame Joints[J].China Concrete and Cement Products,2020(8):65-70.

倒置外露灌浆套筒装配式柱脚节点抗震性能研究

乔德浩1，倪韦斌1，王少杰1，庞加宝2，胡兆文2，黄兴淮3

2020年第8期

摘要

引用本文

摘要：通过自振特性测试和竖向荷载作用下的低周往复荷载试验，对比分析了倒置外露灌浆套筒装配式柱脚节点与传统现浇及现行装配式柱脚节点的整体性及抗震性能。结果表明，倒置外露灌浆套筒柱脚节点试件（NPC）的整体性与传统现浇试件（RC）基本相当，现行装配试件（TPC）测试所得的各阶自振频率基本均低于RC和NPC。三种柱脚节点在失效破坏时均出现了塑性铰，且两个装配式柱脚节点较现浇试件其塑性铰、柱身开裂高度均上移约1个灌浆套筒高度，宜适当延长箍筋加密区。三种柱脚节点的刚度退化规律相同，延性系数均在3.0以上，NPC的耗能能力显著优于RC和TPC。RC、TPC、NPC对应的开裂位移角分别为1/430、1/393、1/479，对应的极限位移角分别为1/24、1/22、1/22，均分别大于规范限值，满足抗震设防要求。 Abstract: Through test of natural vibration property and horizontal low cycle reciprocating load test under vertical load, the integrity and seismic behavior of the inverted exposed grouting sleeve prefabricated column foot joint and the traditional cast-in-place and current prefabricated column base joint were compared and analyzed. The results show that the integrity of the specimen of inverted exposed grouting sleeve column base joint (NPC) is the same as that of the traditional cast-in-place specimen (RC). The natural frequencies of current assembled specimen (TPC) are lower than those of RC and NPC. Plastic hinge appears in all three kinds of column foot joints when they failed, and the height of plastic hinge and column body crack of two prefabricated column foot joints moves up about one grouting sleeve height compared with RC, the densified area of stirrup should be extended properly. The stiffness degradation law of the specimens is the same, the ductility factors are all above 3.0, and the energy dissipation capacity of NPC is significantly better than that of RC and TPC. The corresponding crack displacement angles of RC, TPC and NPC are 1/430, 1/393 and 1/479 respectively, and the corresponding limiting displacement drift are 1/24, 1/22 and 1/22 respectively, which are greater than the code limits, meeting the seismic fortification requirements.

乔德浩,倪韦斌,王少杰,等.倒置外露灌浆套筒装配式柱脚节点抗震性能研究[J].混凝土与水泥制品,2020(8):59-64. QIAO D H,NI W B,WANG S J,et al.Seismic Behavior of Prefabricated Column Foot Joint with Inverted Exposed Grouting Sleeve[J].China Concrete and Cement Products,2020(8):59-64.

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