Experimental Investigation of a Slip in High-Performance Steel-Concrete Small Box Girder with Different Combinations of Group Studs.

Bishnu Gupt Gautam,Xiaohui Liao,Zheng Qiu,Shuhai Guo,Yiqiang Xiang

doi:10.3390/ma12172781

Bishnu Gupt Gautam, Xiaohui Liao + Show 3 more

Open Access

https://doi.org/10.3390/ma12172781

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Journal: Materials	Publication Date: Aug 29, 2019
Citations: 5	License type: CC BY 4.0

Affiliation: Zhejiang University, Quzhou University

Abstract

Due to the significant advantages of steel-concrete composite beams, they are widely used for accelerated bridge construction (ABC). However, there is still a lack of experimental research on the proper design of ABC, especially in the slip with a different group of shear connectors. As a component of steel-concrete composite structure, shear studs play a vital role in the performance of composite structures. This paper investigates the influence of group studs in simply supported and continuous box girders. To this end, three sets of simply supported steel-concrete composite small box girders and two continuous steel-concrete composite small box girders were made with different groups of shear studs, and the slip generated along the beams was recorded under different caseloads. The results were then compared with the proposed simplified equations. The results show that the slip value of the test beam is inversely proportional to the degree of shear connection. The slip of Simply Supported Prefabricated Beam-3 (SPB3) is 1.247 times more than Simply Supported Prefabricated Beam-1 (SPB1), and 2.023 times more than Simply Supported Prifabricated Beam-2 (SPB2). Also, the slip value of Experimental Continuous Beam-1 (ECB1) is 1.952 times more than Experimental Continuous Beam-2 (ECB2). The higher the degree of shear connection, the smaller the maximum slip value.

Highlights

With the development of urbanization and the rapid progress of civil engineering, the problem of urban congestion has become increasingly prominent
This study focused on the static behavior of the accelerated construction steel fibrous This study focused on the static behavior of the accelerated construction steel fibrous highhigh-performance steel-concrete composite small box girder bridge
Two different types of of supported and continuous beams have been tested with trapezoidal steel beams and different supported and continuous beams have been tested with trapezoidal steel beams and different shear stud arrangements

Summary

Introduction

With the development of urbanization and the rapid progress of civil engineering, the problem of urban congestion has become increasingly prominent. Replace, and repair a bridge, or a series of bridges, in areas with heavy traffic, traditional construction methods are usually used in current engineering projects. These methods generally include field activities, such as the installation of supports, formwork, binding of reinforcement bars, pouring and curing of concrete, etc. These onsite construction activities consume a great deal of time and lead to traffic congestion, which weakens the safety and efficiency of the traffic network. Accelerated bridge construction (ABC) is a promising approach to reduce the impact of construction on traffic, improve the quality of materials and durability of products, and minimize the construction time [1,2,3]

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