|Table of Contents|

Calculation theory of tensile equivalent width in steel plate-concrete joints with shear connectors(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2022年6期
Page:
12-22
Research Field:
桥梁工程·交通基础设施智能化运维技术专栏
Publishing date:

Info

Title:
Calculation theory of tensile equivalent width in steel plate-concrete joints with shear connectors
Author(s):
CHENG Gao1; 2;  LI Meng-fei1;  WANG Peng-qi1;  XIE Liang3;  HAN Shuai1
(1. School of Highway, Chang’an University, Xi’an 710064, Shaanxi, China; 2. Xizang Tianlu Co, Ltd,Lasa 850000, Xizang, China; 3. Hunan Architectural Design Institute Group Co, Ltd,Changsha 410208, Hunan, China)
Keywords:
bridge engineering;  steel plate-concrete;  Winkler elastic foundation beam;  equivalent width;  tension joint;  joint stiffness;  finite element verification
PACS:
U441
DOI:
10.19721/j.cnki.1671-8879.2022.06.002
Abstract:
In order to study the reasonable arrangement of shear connectors and tensile theory of steel plate and concrete joints, a theoretical analysis model of steel plate-concrete joints with shear connectors based on Winkler elastic foundation beam theory was established. The steel plate was equivalent to the elastic foundation beam, and the shear connector was equivalent to the elastic foundation. Based on the plane section assumption and the internal force balance condition of the microelement, the differential equations of tensile load and joint deformation were established, and the effective working width and deformation characteristics of the joint under tension were obtained. Based on the principle of stress equivalence, the equivalent width of joints under tension was proposed and solved analytically. Through the calculation of the beam element finite element model of the tension joint, the rationality of the joint tension theory analysis assumption based on the Winkler elastic foundation beam theory was verified. Through the finite element calculation of plate-shell-solid element, the accuracy of the calculation method of working width, equivalent width and joint stiffness deduced by theory was verified. The results show that the vertical displacement of the steel plate with shear connectors shows a parabola distribution along the transverse direction, which accords with the basic assumption of the classical elastic foundation beam. The working width, equivalent width and tensile stiffness of the joint depend on the bending stiffness of the steel plate at the joint, the shear stiffness and density of the shear connector. The working width and equivalent width of the joint increase with the increase of the bending inertia moment of the steel plate section, and decrease with the increase of the shear stiffness of the shear connector. The tensile stiffness of the joint increases with the increase of the bending inertia moment of the steel plate section and the shear stiffness of the shear connector. The analytical formulas for calculating the tensile working width, equivalent width and tensile stiffness of joints are given.16 figs, 33 refs.

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Last Update: 2022-12-20