Numerical study on shear performance of stud-PBL shear connector in corrugated steel plate-UHPC layer composite deck

被引：0

作者：

Yang X. ^{[1
]}

He J. ^{[1
]}

Hu D. ^{[2
]}

Xiao B. ^{[3
]}

Wang N. ^{[3
]}

机构：

[1] School of Urban Construction, Yangtze University, Jingzhou

[2] Kunming Survey, Design and Research Institute Co., Ltd., of CREEC, Kunming

[3] School of Civil Engineering, Central South University, Changsha

来源：

Journal of Railway Science and Engineering | 2024年 / 21卷 / 02期

关键词：

corrugated steel plate-UHPC layer composite deck; numerical simulation; push-out test; shear performance; stud-PBL combined shear connector;

D O I：

10.19713/j.cnki.43-1423/u.T20230495

中图分类号：

学科分类号：

摘要：

A combined shear connector has been proposed for the innovative composite bridge deck consisting of corrugated steel plate and UHPC (Ultra-high Performance Concrete) layer. Short studs are suggested to be fixed at the wave peak of the corrugated steel plate, while PBLs (Perfobond Leiste) are recommended to be fixed at the wave trough. Numerical models were established to investigate the shear behavior of the corrugated steel plate-UHPC interface combined shear connector. The models were verified using existing experimental results. The shear performances of the combined shear connector were analyzed, taking into account design parameters such as stud diameter, PBL hole size, stud tensile strength, and UHPC strength. This allowed for the revelation of the failure mechanism and cooperative working mechanism between the stud and PBL. The formula for calculating the shear capacity and design method of the combined shear connector was proposed. The analysis focused on the distribution of shear force in the combined shear connector during the push-out test. The results indicate that the shear force of the combined shear connector was jointly borne by the studs and PBLs. The increase in stud diameter, PBL hole size, and UHPC strength improves the shear capacity of the combined shear connector. The PBL, which does not have steel bar damages, fails earlier than the stud despite having similar shear capacities. When the ratio of shear capacities between PBL and stud is about 1.5, the PBL and stud fail around the same time, and the best combination effect is achieved. The formula for the combined shear connector ’ s ultimate shear capacity is highly precise, and the calculated results align well with both FEM and experimental results. The composite deck joined with combined shear connector exhibits the best mechanical performance when compared to decks with the same shear connection degrees. This is due to the fact that the relative slip and gap between the steel plate and the UHPC are minimized. © 2024, Central South University Press. All rights reserved.

引用

页码：697 / 708

页数：11

共 16 条

[1]

LIAO Guixing, Fatigue perfermence study of the innovative corrugated orthotropic steel-PRC layer composite deck, (2016)

[2]

ZHANG Qinghua, CHENG Zhenyu, LIAO Guixing, Et al., Optimal design of corrugated steel deck plate-UHPC layer composite deck[J], Journal of Southwest Jiaotong University, 53, 4, (2018)

[3]

WOLCHUK R., Lessons from weld cracks in orthotropic decks on three European bridges, Journal of Structural Engineering, 116, 1, (1990)

[4]

ZHANG Qinghua, BU Yizhi, LI Qiao, Review on fatigue problems of orthotropic steel bridge deck[J], China Journal of Highway and Transport, 30, 3, (2017)

[5]

LI Cong, CHEN Baochun, HU Wenxu, Et al., Calculation of shear bearing capacity, slip and stiffness of headed studs in steel-uhpc composite slab[J], Engineering Mechanics, 40, 6, (2023)

[6]

CAO Junhui, SHAO Xudong, DENG Lu, Et al., Static and fatigue behavior of short-headed studs embedded in a thin ultrahigh-performance concrete layer[J], Journal of Bridge Engineering, 22, 5, (2017)

[7]

LI Meng, SHAO Xudong, CAO Junhui, Et al., Performance of experimental and theoretical analysis on shear short headed studs embedded in UHPC[J], China Journal of Highway and Transport, 34, 8, (2021)

[8]

DUAN Maojun, ZHANG Shiyu, WANG Xu, Et al., Mechanical behavior in perfobond rib shear connector with UHPC-steel composite structure with coarse aggregate[J], KSCE Journal of Civil Engineering, 24, 4, (2020)

[9]

WU Fangwen, FENG Yanpeng, LUO Jianfei, Et al., Study on mechanical properties of PBL shear connectors in steel-UHPC composite structures[J], China Journal of Highway and Transport, 35, 10, (2022)

[10]

LIU Rui, ZHAO Hua, AN Jiahe, Bending performance and finite element analysis of steel plate-UHPC composite deck[J], Journal of Railway Science and Engineering, 20, 2, (2023)

← 1 2 →