An Experimental Study on Flexural-Shear Behavior of Composite Beams in Precast Frame Structures with Post-Cast Epoxy Resin Concrete

被引:3
|
作者
Chen, Peiqi [1 ,2 ]
Xu, Shuo [1 ,2 ]
Zhou, Xiaojie [1 ,2 ]
Xu, Dezong [1 ,2 ]
机构
[1] Tianjin Key Lab Civil Bldg Protect & Reinforcement, Tianjin 300384, Peoples R China
[2] Tianjin Chengjian Univ, Sch Civil Engn, Tianjin 300384, Peoples R China
基金
中国国家自然科学基金;
关键词
monolithic precast composite frame structure; epoxy resin concrete; beam-column joints; seismic performance; simulation; SEISMIC PERFORMANCE; JOINTS; CONNECTIONS;
D O I
10.3390/buildings13123137
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Epoxy resin concrete has superior mechanical properties compared to ordinary concrete, and will play an increasingly important role in urban construction. In this paper, the application effect and prospect of epoxy resin concrete in precast composite frame structures are discussed. Taking the joint surface of the old and new concrete at the end of the composite beam as the research object, three specimens were devised and fabricated. Subsequently, a horizontal cyclic load test was conducted, and the seismic performance indices were analyzed. Multiple finite element models were established to assess the influence of precast concrete strength, the diameter of the longitudinal bar of the beam, the shear span ratio, and the epoxy resin concrete post-cast area, among other factors, on the seismic performance of the beam end. Four findings indicate the following: Firstly, epoxy resin concrete, characterized by its high performance attributes, can be used as a post-cast material in precast concrete structures. Secondly, when the strength of the post-cast epoxy concrete approximates or slightly exceeds that of the precast concrete, and the ratio of longitudinal reinforcement and shear span ratio are appropriately balanced, the operational performance of the composite beam frame structure is enhanced. In addition, when post-cast epoxy resin concrete is employed in the beam-column joint area, the mechanical performance of the composite beam end in the joint area matches or even surpasses that of the structure that was cast in situ. And subsequently, the expansion of post-cast area resulted in better mechanical performance. Finally, when the area of post-cast epoxy resin concrete is a non-node area, the mechanical properties of the composite beam end are worse than the former. However, the amount of epoxy resin concrete used will be greatly reduced, and as the precast node area expands, the bearing capacity of the beam end will increase and gradually approach the cast-in situ structure, indicating that this construction scheme also has advantages.
引用
收藏
页数:25
相关论文
共 50 条
  • [21] Flexural behavior of precast, prestressed, lightweight aggregate concrete-conventional concrete composite beams
    Li, Shiping
    Chen, Wujun
    Zhang, Yibei
    Construction and Building Materials, 2021, 274
  • [22] Experimental study on flexural behavior of bonded steel-concrete composite beams
    Shao, Junhu
    Jiang, Haijun
    Zhang, Lei
    Huang, Wenfeng
    Mou, Tingmin
    Sun, Yuehan
    SCIENTIFIC REPORTS, 2025, 15 (01):
  • [23] EXPERIMENTAL STUDY OF SHEAR BEHAVIOR OF COMPOSITE SHEAR WALL USING PRECAST CONCRETE PANEL.
    Kokusho, Seiji
    Kobayashi, Katsumi
    Shimizu, Akira
    Report of the Research Laboratory of Engineering Materials Tokyo, 1986, (11): : 243 - 252
  • [24] EXPERIMENTAL STUDY ON FLEXURAL BEHAVIOR OF STEEL-CONCRETE COMPOSITE BEAM COMPRISING PRECAST COMPOSITE SLABS
    Hou, Hetao
    Liu, Xiang
    Feng, Mingyuan
    Geng, Lu
    Chen, Lei
    Liu, Haining
    IMPLEMENTING INNOVATIVE IDEAS IN STRUCTURAL ENGINEERING AND PROJECT MANAGEMENT, 2015, : 61 - 66
  • [25] Experimental Study and Theoretical Prediction on the Flexural Behavior of Unbonded, Post-tensioned Precast Beams Made of Recycled Aggregate Concrete
    Li, Shiping
    Chen, Wujun
    INTERNATIONAL JOURNAL OF CIVIL ENGINEERING, 2024, 22 (07) : 1207 - 1222
  • [26] Experimental and Analytical Study on the Shear Transfer in Composite Post Tensioned Precast Concrete Girders
    Nabil, Wael
    Shaaban, Ibrahim G.
    Khalil, Ayman
    Elwan, Sherif
    INTERNATIONAL JOURNAL OF CIVIL ENGINEERING, 2024, 22 (01) : 19 - 35
  • [27] Experimental and Analytical Study on the Shear Transfer in Composite Post Tensioned Precast Concrete Girders
    Wael Nabil
    Ibrahim G. Shaaban
    Ayman Khalil
    Sherif Elwan
    International Journal of Civil Engineering, 2024, 22 : 19 - 35
  • [28] Experimental study on flexural-shear behavior of mortise-tenon joint with dowel
    Structural Engineering Research Center, Tokyo Institute Technology, Japan
    不详
    不详
    J. Struct. Constr. Eng., 2012, 671 (45-54):
  • [29] Experimental Study on Flexural and Shear Behavior of Full Precast Splicing Channel-shaped UHPC Beams
    Zhou Y.
    Nie J.
    Zhang B.
    Hu J.
    Zhu Z.
    Hunan Daxue Xuebao/Journal of Hunan University Natural Sciences, 2023, 50 (07): : 1 - 11
  • [30] Experimental evaluation of cyclic behavior of precast concrete frame with steel shear wall
    Koopaizadeh, Jaber
    Behnamfar, Farhad
    Tafti, Mohammad Reza Javaheri
    STRUCTURAL DESIGN OF TALL AND SPECIAL BUILDINGS, 2024, 33 (16):