scholarly journals Prediction of the Decrease of Vibration of Railway Steel Bridge by Applying Magnetic Rubber Damper with a Constraining Layer

2003 ◽  
Vol 69 (683) ◽  
pp. 1756-1763 ◽  
Author(s):  
Masanori HANSAKA ◽  
Iwao HAYASHI ◽  
Nobuyuki IWATSUKI ◽  
Naoto MIFUNE ◽  
Koichi MORIKAWA ◽  
...  
Keyword(s):  
Steel Bridge ◽  
Rubber Damper

NOISE REDUCTION DUE TO VIBRATION DAMPING ESTIMATED BY MEASUREMENTS OF PARTICLE VELOCITY

2018 ◽  
Vol 5 (2) ◽  
Author(s):  
Masaaki Hiroe ◽  
Nozomu Taniguchi
Keyword(s):  
Noise Reduction ◽  
Particle Velocity ◽  
Field Experiments ◽  
Steel Plate ◽  
Steel Bridge ◽  
Type B ◽  
Large Power ◽  
Railway Bridges ◽  
Radiated Sound ◽  
Rubber Damper

We proposed a new method to evaluate noise reduction due to damping treatment by using the particle velocity of sound measured directly in the vicinity of a vibrating object. Moreover, the proposed method was verified based on the comparison between vibration and particle velocity reductions. In Japan, a procedure to revamp old railway bridges, which had no specific fissure damages or serious corrosions, by applying to composite remodeling process have been widely used. During the process of such composite remodeling, we have often used magnetic rubber damper or rubber-latex mortar to reduce remarkable large power of structure-borne sound radiated from steel bridge of railway. This proposed method enables us to estimate precisely noise reduction of these countermeasures, because we grasp the behavior of sound radiated from the vibrating object in detail. In this paper, we present the results of laboratory and field experiments on the effects of noise reduction by using two magnetic rubber dampers, type-A and type-B. In the field measurement, the type-B more significantly reduced the sound radiated from vibrating beam. However, the reduction of radiated sound and that of vibration did not coincide. The reason was clarified from comparison between vibration and particle velocity, which occur due to vibrating a steel plate of simulated beam of bridge in laboratory experiment. Thus, the proposed method enables us to evaluate noise reduction precisely.

Cold Retrofit Method Study for Fatigue Cracking of Steel Bridge

2015 ◽  
Vol 105 (23) ◽  
pp. 1-8 ◽  
Author(s):  
Chun-sheng Wang ◽  
Chang-yang Ou ◽  
Mu-sai Zhai ◽  
Lan Duan
Keyword(s):  
Fatigue Cracking ◽  
Steel Bridge

Lamellar Tearing Observations Regarding the Application of European Standards in the Field of Welded Steel Constructions

2018 ◽  
Vol 69 (6) ◽  
pp. 1352-1354
Author(s):  
Anamaria Feier ◽  
Oana Roxana Chivu
Keyword(s):  
Bearing Capacity ◽  
Brittle Failure ◽  
Engineering Practice ◽  
Steel Bridge ◽  
Railway Bridge ◽  
Welded Steel ◽  
Direct Replacement ◽  
Lamellar Tearing ◽  
European Standards ◽  
Comprehensive Study

The problem of corrosion for old steel bridges in operation is often solved by direct replacement of elements or structure. Only a few studies have been done to determine the efforts influenced by corrosion in those elements. In general, it is considered that a corroded element has exceeded the bearing capacity and should be replaced, but if the corroded element is secondary it could be treated and kept. A factor in the rehabilitation of an old steel bridge in operation is the aspect of structure. If the structure is corroded, rehabilitation decision is taken is easier. Lamellar tearing describes the cracking that occurs beneath the weld and can be characterized as a brittle failure of steel, in the direction perpendicular to the plane of rolling. The paper presents a comprehensive study on lamellar tearing and summarizes some conclusions about the prevention of them. The conclusions will be exemplified in the case of a railway bridge, with a main truss girder. The paper presents also some observations regarding the stress analysis in fillet welds, resulting from the engineering practice.

Enhanced Method of Predicting Tensile Strength Degradation of Steel Bridge Members Due to Corrosion

2012 ◽  
Vol 2 (1) ◽  
pp. 30-41
Author(s):  
J. M.R.S. Appuhamy ◽  
M. Ohga ◽  
T. Kaita ◽  
P. Chun ◽  
P. B.R. Dissanayake
Keyword(s):  
Tensile Strength ◽  
Strength Degradation ◽  
Steel Bridge

scholarly journals Review of annual progress of bridge engineering in 2019

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Renda Zhao ◽  
Yuan Yuan ◽  
Xing Wei ◽  
Ruili Shen ◽  
Kaifeng Zheng ◽  
...  
Keyword(s):  
High Performance ◽  
Concrete Bridges ◽  
Bridge Engineering ◽  
Research Progress ◽  
Steel Bridge ◽  
Wind Resistance ◽  
Main Research ◽  
Bridge Model ◽  
Bridge Evaluation ◽  
Bridge Structures

AbstractBridge construction is one of the cores of traffic infrastructure construction. To better develop relevant bridge science, this paper introduces the main research progress in China and abroad in 2019 from 13 aspects, including concrete bridges and the high-performance materials, the latest research on steel-concrete composite girders, advances in box girder and cable-supported bridge analysis theories, advance in steel bridges, the theory of bridge evaluation and reinforcement, bridge model tests and new testing techniques, steel bridge fatigue, wind resistance of bridges, vehicle-bridge interactions, progress in seismic design of bridges, bridge hydrodynamics, bridge informatization and intelligent bridge and prefabricated concrete bridge structures.

Developing cold-mixed epoxy resin-based ultra-thin antiskid surface layer for steel bridge deck pavement

2021 ◽  
Vol 291 ◽  
pp. 123366
Author(s):  
Yang Liu ◽  
Zhendong Qian ◽  
Xijun Shi ◽  
Yuheng Zhang ◽  
Haisheng Ren
Keyword(s):  
Surface Layer ◽  
Epoxy Resin ◽  
Bridge Deck ◽  
Steel Bridge ◽  
Bridge Deck Pavement

scholarly journals A Comprehensive Life-Cycle Cost Analysis Approach Developed for Steel Bridge Deck Pavement Schemes

Coatings ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 565
Author(s):  
Changbo Liu ◽  
Zhendong Qian ◽  
Yang Liao ◽  
Haisheng Ren
Keyword(s):  
Life Cycle ◽  
Life Cycle Cost ◽  
Bridge Deck ◽  
Analysis Approach ◽  
Steel Bridge ◽  
User Cost ◽  
Construction Quality ◽  
Concrete System ◽  
Traffic Conditions ◽  
Bridge Deck Pavement

This study aims to evaluate the economy of a steel bridge deck pavement scheme (SBDPS) using a comprehensive life-cycle cost (LCC) analysis approach. The SBDPS are divided into the “epoxy asphalt concrete system”(EA system) and“ Gussasphalt concrete system”(GA system) according to the difference in the material in the lower layer of the SBDPS. A targeted LCC checklist, including manager cost and user cost was proposed, and a Markov-based approach was applied to establish a life-cycle performance model with clear probability characteristics for SBDPS. Representative traffic conditions were designed using a uniform design method, and the LCC of SBDPS under representative traffic conditions and different credibility (construction quality as a random factor) was compared. The reliability of the LCC analysis approach was verified based on the uncertainty analysis method. Based on an expert-scoring approach, a user cost weight was obtained to ensure it is considered reasonably in the LCC analysis. Compared with the cumulative traffic volume, the cumulative equivalent single axle loads (CESAL) have a closer relationship with the LCC. The GA system has better LCC when the CESAL is less, while the EA system is just the opposite. The breaking point of CESAL for the LCC of the EA system and the GA system is 15 million times. The LCC analysis of SBDPS should consider the influence of random factors such as construction quality. The comprehensive LCC analysis approach in this paper can provide suggestions for bridge-management departments to make a reasonable selection on SBDPS.

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