Ijraset Journal For Research in Applied Science and Engineering Technology
Authors: Aashish Nema, Dr. Rajeev Chandak
DOI Link: https://doi.org/10.22214/ijraset.2023.49867
Certificate: View Certificate
: In this study the T-beam bridge is to be analysis on the staad pro sofware. A T-beam bridge is composite concrete structure which is composed of slab panel, longitudinal girder and cross girder. This project looks on the work of analysis and design of bridge deck and beam on software the specific bridge model is taken of a particular span and carriageway width the bridge is subjected to different IRC loadings like IRC Class AA, IRC Class 70R tracked loading etc. in order to obtain maximum bending moment and shear force. From the analysis it is observed and understand the behavior of bridge deck under different loading condition and comparing the result. The different codes of design will be use in this project are IRC 5-2015,IRC 6-2016, IRC 112-2011, IRC 21-2000.
I. INTRODUCTION
A developing country, Myanmar is rich in water resources and land areas. So, it needs a lot of roads. These roads cross many obstacles, such as rivers, valleys and streams. To overcome this condition, bridges are important roles. A bridge is a structure that across over a river, bay, or other obstruction, permitting the smooth and safe passage of vehicles, trains, and pedestrians. A bridge structure is divided into an upper part or the superstructure, which consists of the slab, the floor system and the main truss or girders and a lower part or the substructure, which are columns, piers, towers, footings, piles and abutments. The recent development in design technology, material, quality, and efficient construction technique in bridges engineering will enable construction of not only longer but also lighter and slender bridges.
Based on material, they can be classified as Stone Bridge, Brick Bridge, Timber Bridge, Steel Bridge, Composite Bridge, etc. Based on form of superstructure, they can be classified as Arch Bridge, Slab Bridge, Beam and Plate Girder Bridge, Trusses Bridge, Suspension Bridges, and Cabled Stayed Bridge.
II. RESEARCH MOTIVATION
Footbridges are scaffolding structures used for the transportation of pedestrians, cyclists, and riders of low velocity and assistive devices such as wheelchairs. Footbridges are not designed for any sort of vehicular activity, and they have numerous applications all around the world. In developed countries, they are used to connect two zones separated by either roads, canals or a body of water between them. In underdeveloped countries, where traffic and over congestion are major problems, they may be used to give access to public buildings such as shops and universities.
They are also used to connect to high-rise buildings from top floors, and in this case, they are specifically called “skyway” [1]. Footbridges are usually manufactured using the following types of materials: concrete, steel and timber, however steel footbridges are preferred in situations where the bridges have long spans and there is the quick availability of structural steel members. A great amount of technical literature is available on these members.
The American Institute of Steel Construction (AISC) manuals are available in which standard shapes of these structural steel members are available along with important design specifications, i.e., weight/length, the moment of inertia and section modulus, etc. [2].
Further, local area suppliers/manufacturers of steel members also provide their standard shapes and their technical specifications. This helps the designer to choose standard shapes easily and design the steel bridge with the members available in the local market, and thus results in inexpensive manufacturing. In this paper, we have chosen steel as a material for a footbridge. Another important point in selecting steel is that its strength to mass ratio is better than that of timber or concrete. Moreover, painted steel looks aesthetically attractive.
III. RESEARCH GAP
Roads are the lifelines of contemporary transport and bridges are the foremost vital elements of transportation systems. They are prone to failure if their structural deficiencies are remain unidentified. Due to aging of existing bridges and the increasing traffic loads, monitoring of bridge steel beam during service time has become more important than ever. The structural health monitoring of bridge refers to the process of implementing a damage detection and characterization strategy. There is a need for Structural health monitoring techniques to supplement visual inspections as more bridges are in need of in-depth assessments and ongoing monitoring to ensure they are still fit for purpose. Vibration monitoring is a useful evaluation tool in the development of a non-destructive damage identification technique, and relies on the fact that occurrence of damage in a structural system leads to changes in its dynamic properties. The dynamic response of bridges subjected to moving loads has long been an interesting topic in the field of civil engineering. The load-bearing capacity of a bridge and its structural behavior under traffic can be evaluated using well-established modelling. Among the tools available today for structural investigation, dynamic techniques play an important role from several points of view. Particularly, by measuring the structural response, they allow us to identify the main parameters governing the dynamic behavior of a bridge, namely natural frequencies, mode shapes and damping factors. Modal analysis, usually based on finite element method, is commonly used to determine the vibration characteristics, such as natural frequencies and associated mode shapes of a structure.
IV. LITERATURE REVIEW
9. Kai Liu, Thermal transfer analysis method for judging the best time of removing the steel bridge deck asphalt pavement by induction heating: The application of induction heating technology to remove the steel bridge deck asphalt pavement (SBDP) is a green, efficient and non-destructive bridge deck pavement removal method. The temperature between the steel bridge deck and the asphalt pavement is the key to the removal efficiency and effect. In order to analyze the distribution law of the temperature field, a heat transfer analysis method considering various factors is proposed, in which the thermal contact resistance (TCR) is an important factor. At the same time, this paper analyzes the influence of interlayer delamination disease on thermal resistance. Besides, by simplifying the SBDP, this study built an induction heating experimental platform to verify the effectiveness of the above method. Through this method, the distribution of the interlayer temperature field in the process of induction heating the SBDP can be accurately analyzed, so as to determine the best removal occasion of SBDP.
10. K. Chu, Fatigue behaviour of joint-free bridges with steel and GFRP-reinforced ECC link slabs: Engineered Cementitious Composite (ECC) link slabs provide a feasible alternative to leaking expansion joints for improving long-term durability of slab-on-girder bridges. The use of Glass Fiber Reinforced Polymer (GFRP) rebars have become increasingly common for inducing superior chemical resistance in bridge decks in salt-prone locations. Existing literature lacks experimental research on effects of fatigue load on joint-free bridges with ECC link slabs reinforced with GFRP bars. This paper presents results of experimental testing of joint-free bridges with GFRP or steel-reinforced ECC link slabs subjected to static and fatigue (up to 1 million cycles at 4 Hz) loadings. Comparative performance between GFRP and steel-reinforced ECC link slab bridges is described based on load–deflection or moment-rotation behaviour, strain characteristics and crack development in pre-fatigue, fatigue and post-fatigue stages. After 1 million fatigue cycles, the GFRP-reinforced ECC link slab exhibited smaller crack widths and higher deformation capacity while its incorporation provided superior ductility and deformation capability of the full bridge. A finite element (FE) model was also developed using experimental results to simulate load–deflection behaviour of composite deck-steel girder joint-free bridge with ECC link slab subjected to fatigue loading. Parametric FE study showed that increasing mean stress level caused increased composite deck-steel girder deflection while link slab deflection was limited by bridge span deformation.
11. Bin Qiang, Mechanical properties of bridge-steel weldments at elevated temperatures: The fire-resistance design of welded steel bridges depends on the temperature-dependent mechanical properties at elevated temperatures. This study investigates experimentally the temperature-induced degradation of the mechanical properties of a bridge-steel weldment. A butt-welded joint, containing the base metal (BM) Q345qD steel and weld metal (WM), was welded via submerged arc welding. Monotonic tension tests of BM and WM cylindrical specimens were carried out under various temperatures in the range of 20–700 °C, and their stress-strain relationships, failure modes, yield strength, elastic modulus, and ultimate strength at elevated temperatures were obtained and analyzed. The reduction factors of yield strength, elastic modulus and ultimate strength are compared with those recommended in current design codes. It is shown that elevated temperatures can decrease significantly the material performance of the Q345qD weldment, and the degradation of the mechanical properties of the BM and WM differs with increasing temperature. The test data indicate that the reductions in yield strength, elastic modulus, and ultimate strength at 700 °C from those at 20 °C are 78%, 55%, and 84%, respectively, for the BM and 75%, 53%, and 79%, respectively, for WM. The predictive equations for characterizing the material properties and stress-strain relationships of the BM and WM at elevated temperatures are proposed, thereby providing essential data for evaluating the fire response of steel bridges.
12. Hua Zhao, The design and experimental study of the steel-concrete composite box girder of a harp-shaped single span cable-stayed bridge: The chapter presents the issues of design and experiment results of a harp-shaped single span cable-stayed bridge, Hongshan Bridge, located in Changsha, China. The inclined pylon is a prestressed concrete structure, and the main girder is an orthotropic steel-concrete composite box girder. The chapter presents a scaled full model test to verify the design and analyze the results of the bridge. The chapter investigates the experimental study of the local stability of the steel box girder and the dynamic characteristics of the model with different auxiliary equipments. The chapter provides recommendations that the pylon should be in a status of axial compression when the girder is loaded by all dead loads and half live loads, and the weight of the pylon and the girder deck should be in a balanced condition. For this type of bridge, the main girder prefer to an orthotropic steel-concrete composite box girder, and the concrete deck is installed near the neutral axis of the girder. To prevent the cracking of the concrete deck, the prebending prestressing method is presented in the chapter. The chapter also indicates that setting temporary piers in the construction of the bridge is a practical and economic approach to improve wind-resistance characteristics.
13. Biao Wei, Investigation of equal strength mild steel tenons as displacement restraining devices for long-span railway arch bridges: In this paper, Equal Strength Mild Steel Tenons (ESMSTs) have been developed as a candidate for displacement restraining device of long-span railway arch bridges. They are made of a cheap and easily fabricated material, low carbon mild steel. The geometry is designed according to the principle of equal strength beam to make full use of the ductile deformation of mild steel, increase the energy dissipation capacity and alleviate damage concentration. To begin, the design concept of ESMST is given followed by the derivation of the theoretical formula of the mechanical properties with the vertical free mechanism which is of no vertical load to guide the design. A pseudo-static experiment program is then presented for two full-scale 2.5 m tall ESMSTs. Besides, a rigorous 3D numerical model was developed in ABAQUS to reproduce the behavior of ESMSTs to guide the design of ESMST in future application. Finally, a case study is presented for the application of ESMST in one of typical long-span railway arch bridges to evaluate its efficiency and effectiveness. The test results indicate that the tested ESMSTs can meet the demands of the long-span railway arch bridges for high initial stiffness, energy dissipation and deformability under strong earthquake action. It was also found that the ESMST had good fatigue performance. In addition, the developed numerical model in ABAQUS can accurately reproduce hysteretic behavior of the ESMST and hence can be used with confidence in the future to guide the design of ESMSTs. Results from the case study show the ESMSTs can work effectively and efficiently in reducing the response of long-span railway arch bridges without imposing much additional demand on the substructure. Findings of this study can provide guidance on the design of ESMSTs as well as support for the application of the ESMSTs in long-span railway arch bridges.
14. Miroslav Škaloud, 7.5 - A User-friendly Design of the Webs of Steel Bridges Subjected to Many Times Repeated Loading: In the first part of the paper, two ways of steel bridge construction are discussed, viz. (i) thin-walled construction and (ii) economic-fabrication one. Then it is reported about new stages of the Prague research, both theoretical and experimental, on the fatigue limit state of steel plate girders whose webs breathe under repeated loading. Based on analysis of the new results and conclusions, simple formulae are established such as to give (i) the maximum web slenderness or (ii) the maximum load for which the impact of the complex problem of web breathing can entirely be disregarded in design. This approach can substantially simplify the analysis of steel girders subjected to repeated loading.
15. Yazan M. Alshawabkeh, Lateral buckling capacity of steel H-piles supporting integral abutment bridges (IABs): Integral abutment bridges (IABs) have been gaining wide popularity in the United States and neighboring countries due to the rapid increase in maintenance costs associated with conventional bridges. The elimination of expansion joints in IABs allows the thermally induced lateral demand in the superstructure to be transferred to the supporting piles. This paper aims to study the behavior of steel H-piles supporting IABs through a detailed nonlinear finite element analysis that was calibrated and validated against available experimental data. A total of 30 models were established to examine the effect of various parameters (pile size, pile orientation, pile material yield strength, pile equivalent cantilever length, and axial compressive load) on piles supporting jointless bridges subjected to a combined axial load and lateral cyclic displacement amplitude. Local buckling was the dominant failure mode for all the specimens. Furthermore, this paper reiterates the various parameters and assesses their influence through a statistical regression analysis to develop an empirical formula for calculating the lateral buckling capacity. The rationality of the developed formula was examined and tested with existing experimental data, which testified the reliability to be used for future design considerations.
This paper reviewed the bridge vibration issues under linedinnovation and research in the future. The future direction proposed by the current review of the study, based on the gap or shortfall in existing studies linked with bridges conventional vibration test for detecting the effects of vibration scouring the work on the bridge. In addition, an investigation into the effect of vibration promotes integrated bridges also in the apparent since the behaviour of the bridge is an integral a static and different from the conventional part of the bridge. The effects of different types of sediment also are a possibility of establishing a new area of research to study the effect of vibration on the bridge.
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Copyright © 2023 Aashish Nema, Dr. Rajeev Chandak. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Paper Id : IJRASET49867
Publish Date : 2023-03-28
ISSN : 2321-9653
Publisher Name : IJRASET
DOI Link : Click Here