Investigation of train-induced vibration and noise from a steel-concrete composite railway bridge using a hybrid finite element-statistical energy analysis method

Abstract

In this study a hybrid finite element-statistical energy analysis (FE-SEA) method is used to investigate the structure-borne noise of a steel-concrete composite railway bridge. The rail is represented by an infinite Timoshenko beam connected to the sleepers which are regarded as finite Timoshenko beams supported in ballast.The fasteners and ballast are simplified as a series of springs with complex stiffness. This model allows the receptance of the track to be determined. The wheel-rail forces are computed in the frequency domain from the contact-filtered roughness and the receptances of the wheel, track, and contact. The forces transmitted to the bridge are determined by substituting the wheel-rail forces into the equation of motion for the track. This model could also be applied to a slab track mounted on a bridge. A hybrid FE-SEA method is introduced in which FE is used to model the concrete deck and SEA is used to model the steel girders. This enables the computation of the vibration and noise of the composite railway bridge. The proposed method is verified by comparing its predictions with field measurements. The structure-borne noise level of the bridge is found to increase with train speed v by approximately 20lg(v). It is shown that the adjacent spans in a multi-span bridge can be ignored in deriving the bridge-borne noise at receiver points in the middle of the main span, provided that the distance to the track centreline is less than 0.3 times the length of the main span.

Control of sound transmission into a hybrid double-wall sandwich cylindrical shell

“…Last, at very high frequencies (i.e. considerably above the ring and coincidence frequencies), where the typical acoustic/structural wavelengths exceed the thickness of the shell, the main hypothesis of shell mechanics break down (Hayek and Boisvert, 2010), and other methods such as 3D elasticity theory (Hasheminejad and Alaei-Varnosfaderani, 2014), and energy-based methods (Lyon, 1975; Liu et al, 2020) should be adopted. Furthermore, carrying out an experimental verification of the proposed control system is not a very complicated task and can be performed in any averagely equipped acoustics laboratory.…”

Vibro-acoustic performance of steel–concrete composite and prestressed concrete box girders subjected to train excitations

“…Train-track interaction model Dynamic forces Fig. 2 Schematic of numerical simulation procedure Vibro-acoustic performance of steel-concrete composite and prestressed concrete box girders… range of 20-1000 Hz is much smaller than that of the track; thus it is reasonable to treat the bridge deck as a rigid body [23,26]. In this context, the track-bridge system can be calculated separately without reducing accuracy.…”

“…Li et al [20] and Liu et al [21] proposed hybrid an FE-SEA to discuss the vibration and noise characteristics of an SCC bridge that comprised two I-shaped steel girders and a concrete deck, and that method was also applied to a long-span steel-truss cable-stayed bridge [22]. To lower the computational cost further, Liu et al [23] established a coupled wheel-track model to obtain the excitation transmitted to the bridge and then used FEM for the concrete deck and SEA to model the steel girders. They found that SCC bridge-borne noise increases with train speed v by approximately 20 log(v).…”

Finite Element Modeling of the Dynamic Properties of Composite Steel–Polymer Concrete Beams

“…In [13], a hybrid finite element-statistical energy analysis (FE-SEA) method was used to investigate the structure-borne noise in a steel-concrete railway bridge, which, in a structural sense, can be treated as a composite beam. A hybrid FE-SEA method was introduced in which FE was used to model the concrete deck and SEA was used to model the steel girders.…”