水泥混凝土制品_2020_《混凝土与水泥制品》杂志社

头部文案

发布时间：2020-01-06 00:00:00

全国建材科技期刊
全国中文核心期刊
中国科技论文统计源期刊
万方数据-数字化期刊群入网期刊
中国学术期刊（光盘版）全文收录期刊

华东地区优秀科技期刊
江苏省期刊方阵“双效期刊”
中国期刊网全文收录期刊
中国科技期刊数据库全文收录期刊



全部文章

水泥混凝土制品

PHC管桩拉-剪承载性能数值分析

吕铎1，刘佳龙2，郭昭胜3，安增军4,5，戴亚4,5

2020年第12期

摘要

引用本文

摘要：利用ABAQUS 有限元分析软件建立了PHC600 B-130管桩桩身横向受剪数值分析模型，分析了不同轴向拉力对空芯管桩和填芯管桩桩身抗剪承载性能的影响。结果表明，随着轴向拉力的增大，两类管桩桩身的开裂剪力和极限剪力均明显降低，相应的极限位移也有降低，桩身延性下降，填芯混凝土对于管桩桩身抗剪承载力的提高效果显著。基于规范和前人研究成果，结合数值分析数据，提出了考虑轴拉力影响的空芯管桩和填芯管桩的抗剪承载力计算公式。 Abstract: Using ABAQUS finite element analysis software, the numerical analysis model of PHC600 B-130 pipe lateral shear was established, and the influence of different axial tension on the shear bearing performance of hollow pipes and core-filled pipes was analyzed. The results show that with the increase of axial tension, the cracking shear force and ultimate shear force of the two types of pipes are significantly reduced, the corresponding ultimate displacement is also reduced, and the ductility of the pipe is decreased, and the core-filled concrete has a significant effect on improving the shear bearing capacity of pipes. Based on the specifications and previous research results, combined with numerical analysis datas, the shear bearing capacity calculation formulas of hollow pipe and core-filled pipe considering the influence of axial tension are put forward.

吕铎,刘佳龙,郭昭胜,等. PHC管桩拉-剪承载性能数值分析[J].混凝土与水泥制品,2020(12):30-35. LYU D,LIU J L,GUO Z S,et al. Numerical Analysis of Tensile-shear Bearing Performance of PHC Pipes[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(12):30-35.

CFRP修复预制混凝土管片界面滑移试验研究

聂红宾1，2，谷拴成2，何晓萍3，翟鑫懿1

2020年第12期

摘要

引用本文

摘要：为了研究碳纤维高强复合材料（Carbon Fiber Reinforced Plastics，CFRP）在预制混凝土管片破损修复中的受力性能，以沿海某城市双线地铁盾构区间线路为项目依托，通过弯剪试验研究了破损管片经过CFRP修复后的抗剪与滑移行为。试验结果表明：随着CFRP粘贴长度的增加，承载力提高较大，整体挠度也相应增加，剥离滑移发生在CFRP与混凝土界面；随着层数的增加，承载力增加80%~100%，相对滑移下降60%~75%，抗剪能力提高180%；粘贴1层CFRP基本可满足现行规范要求。 Abstract: In order to further study the mechanical properties of carbon fiber reinforced plastics (CFRP) in the repair technology of subway damaged tube segments, by relying project on the double subway shield section line in a coastal city, it was used to investigate that bending-shearing test method to study mechanical behavior of shield′s damaged segments repaired by CFRP. The results show that, in bending-shearing test, the bearing capacity of segments repaired by CFRP has a big improvement and deflection also adds and stripping damage happens at the interface of CFRP and concrete with CFRP′s length increasing. Bearing capacity is increased by 80%~100% and deflection is reduced by 60%~67% as increasing in the number of layers, it can effectively control the radial displacement. It results that it can completely meet the limitations of China′s existing norms that it pastes one layer of CFRP.

聂红宾,谷拴成,何晓萍,等.CFRP修复预制混凝土管片界面滑移试验研究[J].混凝土与水泥制品,2020(12):36-39. NIE H B,GU S C,HE X P,et al.Experimental Study on Interface Slip Behavior of Reinforced Concrete Segments by CFRP[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(12):36-39.

隧道花岗岩洞渣骨料在C50混凝土预制 T梁中的应用研究

郑晓冬1，管志涛1，李超1，黄兴1，李北星2

2020年第12期

摘要

引用本文

摘要：依托三峡翻坝江北高速公路项目，将隧道花岗岩洞渣加工成机制砂石骨料，并制备了C50混凝土预制T梁，通过T梁静载试验和T梁混凝土专用回弹测强曲线试验，研究了花岗岩洞渣机制骨料在C50混凝土预制T梁中的应用技术。结果表明：利用花岗岩洞渣生产的机制砂石骨料可以配制出工作性、力学性能与耐久性优良的T梁用C50混凝土，且混凝土T梁的刚度、强度及抗裂性均满足设计要求；通过试验建立的T梁用C50混凝土专用回弹测强曲线较国家通用测强曲线更精确。 Abstract: Relying on the Three Gorges Fanba Jiangbei Highway Project, the tunnel granite cave slag was processed into machine-made sand and gravel aggregate, and the C50 concrete precast T-beams were prepared. Through T-beam static load test and T-beam concrete rebound strength test curve test, the application technology of granite cave slag machine-made aggregate in C50 concrete precast T-beam was studied. The results show that the machine-made sand and gravel aggregate produced from granite cave slag can be used to formulate C50 concrete for T-beams with excellent workability, mechanical properties and durability, and the stiffness, strength and crack resistance of the precast T-beams meet the design requirements. The special rebound strength test curve for C50 concrete for T-beams established through experiments is more accurate than the national general strength test curve.

郑晓冬,管志涛,李超,等.钢结构住宅用预制夹心保温外挂墙板的设计与应用研究[J].混凝土与水泥制品,2020(12):40-44,49. ZHENG X D,GUAN Z T,LI C,et al. Research on Application of Tunnel Granite Cave Slag Aggregate in C50 Concrete Precast T-Beam[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(12):40-44,49.

总访问量 468,401 网站统计

官方微信公众号关闭

关于我们 | 联系我们 | 订购杂志 | 回到顶部

苏ICP备10086386号

网站建设：中企动力苏州