苏州混凝土水泥制品研究院有限公司

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

通电加速锈蚀后弹卡式连接接头预制桩抗弯性能研究
通电加速锈蚀后弹卡式连接接头预制桩抗弯性能研究
  • 刘伟扬1,龚顺风1,徐铨彪2, 3,陈 刚2, 3,刘承斌1,樊 华4
2021年第5期
摘要
引用本文
摘   要:为研究弹卡式连接预应力混凝土方桩在滨海环境下长期工作的耐久性能,对弹卡式连接与传统焊接式连接方桩接头试件进行了通电加速锈蚀试验,并对劣化后两种方桩接头试件进行了抗弯性能试验。结果表明:劣化后的弹卡式连接方桩接头试件整体连接性能保持完好,其开裂弯矩和极限弯矩试验值与桩身理论计算值较接近,试件受弯破坏形式为接头底部被拉开,弹卡连接件中插杆从小套筒中拔出而破坏;劣化后的焊接式连接方桩接头试件焊缝连接处锈蚀严重,其开裂弯矩和极限弯矩试验值相较桩身理论计算值下降幅度较大,试件受弯破坏形式为接头底部连接焊缝直接拉开,跨中接头底部两侧端板完全脱离。 Abstract: In order to study the long-term durability of prestressed concrete square piles with resilient clamping connection in coastal environments, the accelerated corrosion tests were conducted on prestressed concrete square piles with resilient clamping connection and traditional welded connection, and the flexural performance tests of two kinds of square pile joint specimens were conducted. The results show that the overall connection performance of the deteriorated square pile joint specimens with resilient clamping connection remains intact and the test values of cracking moment and ultimate moment are close to the theoretical calculation values of the pile body. The flexural failure mode of the specimens is that the bottom of the connection joint is pulled apart, and the inserting rod in resilient clamping connector is pulled out from the small sleeve. However, the weld seam of the welded square pile joint specimens are corroded seriously. Compared to the theoretical values, the cracking and ultimate bending moment of the welded square pile joint specimens after corrosion deterioration are significantly reduced. The flexural failure mode of the specimen is that the connecting weld seam at the bottom of the joint is pulled apart, and the end plates on both sides of the bottom are completely separated.
刘伟扬,龚顺风,徐铨彪,等.通电加速锈蚀后弹卡式连接接头预制桩抗弯性能研究[J].混凝土与水泥制品,2021(5):33-38. LIU W Y,GONG S F,XU Q B,et al.Study on Flexural Performance of Prestressed Concrete Square Pile with Resilient Clamping Connection Joint After Electricity Accelerates Corrosion[J].CHINA CONCRETE AND CEMENT PRODUCTES,2021(5):33-38.
预制装配式混凝土电缆沟力学性能数值模拟分析
预制装配式混凝土电缆沟力学性能数值模拟分析
  • 胡 坚,吴 军,章志鸿,赵 强
2021年第5期
摘要
引用本文
胡坚,吴军,章志鸿,等.预制装配式混凝土电缆沟力学性能数值模拟分析[J].混凝土与水泥制品,2021(5):39-42. HU J,WU J,ZHANG Z H,et al.Numerical Simulation Study on Mechanical Performance of Prefabricated Concrete Cable Pits[J].CHINA CONCRETE AND CEMENT PRODUCTES,2021(5):39-42.
预制蝶形腹板混凝土箱梁抗弯性能研究
预制蝶形腹板混凝土箱梁抗弯性能研究
  • 焦广如,陈建兵,张云飞
2021年第5期
摘要
引用本文
摘   要:为了解预制蝶形腹板混凝土箱梁在荷载作用下的受力特点、破坏形态、变形能力以及腹板中钢筋内力分布等情况,设计制作了预制蝶形腹板混凝土箱梁试件,并对其受弯性能进行了试验研究,采用对称加载,得到了完整的荷载-挠度曲线,沿高度纵向应变曲线、钢筋屈服曲线、沿纵向跨径方向挠度曲线。研究表明,在对称荷载作用下,预制蝶形腹板混凝土箱梁表现为弯曲破坏,同时,伴随着弯剪断腹板接缝处出现断裂,结构失效。针对挠度,对比分析了费氏空腹理论变形公式计算值、有限元分析值和试验值,三者吻合性良好,研究结果可为预制蝶形腹板混凝土箱梁的进一步研究和工程应用提供参考。 Abstract: In order to understand the precast butterfly wen box girder stress characteristics, failure form, deformation capacity and internal force distribution of the steel bars in the web, a  precast butterfly web concrete box is designed and manufactured. The beam model specimens are loaded with symmetrical distribution to obtain a complete load-deflection curve, along the height longitudinal strain curve, the steel bar yield curve, and the deflection curve along the longitudinal span direction, to conduct experimental research on its bending performance. The results have shown that under the action of symmetrical loads, the butterfly-shaped web box girder fails in bending, and the joints of the webs are broken together with the bending and shearing, resulting in structural failure. According to the deformation formula deduced by Fischer’s fasting principle and the comparative analysis between the finite element simulation value and the test value, the coincidence performance is good. The actual measurement results verify the rationality of the finite element and theoretical formulas, and the research results can provide a reference for the further research and engineering application of the butterfly web box girders.
焦广如,陈建兵,张云飞.预制蝶形腹板混凝土箱梁抗弯性能研究[J].混凝土与水泥制品,2021(5):43-47. JIAO G R,CHEN J B,ZHANG Y F,et al.Study of Bending Performance of Precast Butterfly Web Concrete Box Girders[J].CHINA CONCRETE AND CEMENT PRODUCTES,2021(5):43-47.
上一页
1

关注《混凝土与水泥制品》

总访问量 468,401   网站统计

官方微信公众号关闭
苏州混凝土水泥制品研究院有限公司

关于我们    |    联系我们    |    订购杂志    |    回到顶部

版权所有:中国混凝土与水泥制品网  苏ICP备10086386号   网站建设:中企动力 苏州

版权所有:中国混凝土与水泥制品网

苏ICP备10086386号

网站建设:中企动力 苏州