Experimental and analytical studies on dynamic characteristics of a large span cable-stayed bridge

Ren, Wei‐Xin; Peng, Xin; Lin, Youxi

doi:10.1016/j.engstruct.2004.11.013

Cited by 160 publications

(68 citation statements)

References 19 publications

(23 reference statements)

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“…The stochastic subspace identification (SSI) method (Overschee and de Moor [29,30]; Peeters and de Roeck [31]; Ren et al [32]) was employed for modal parameter identification. The data processing and modal parameter identification were carried out using Matlab software.…”

Section: Modal Properties Of the Bridgementioning

confidence: 99%

Experimental and Numerical Investigation of the Effect of Standing People on Dynamic Properties of a Beam-Like Bridge

Xie

Liu

2017

Mathematical Problems in Engineering

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This paper studies the vertical dynamic properties of a beam-like bridge attached with standing people. A purpose-built lively bridge was constructed. Model properties of the empty structure are obtained using ambient vibration testing method. Experimental tests of the bridge attached with standing people were also conducted covering a variety of densities of occupants and different postures. The considerable number of participants and repetitions makes it possible to take into account inter-and intrasubject variability. To illustrate the variations of dynamic properties of the structure, a mathematic model of standing people-structure interaction system is developed employing the single degree-of-freedom (SDOF) human body model. It is shown that the model developed herein can effectively illustrate the experimental observations. Based on the model, the effect of damping and natural frequency of the human body on dynamic properties of the occupied structure is scrutinized. Results show that the modal properties of the human body contribute remarkably to the structural damping but little to the structural natural frequencies.

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Section: Modal Properties Of the Bridgementioning

confidence: 99%

Experimental and Numerical Investigation of the Effect of Standing People on Dynamic Properties of a Beam-Like Bridge

Xie

Liu

2017

Mathematical Problems in Engineering

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“…The measured fundamental frequency is useful information as they relate closely to the stiffness of the bridges [3]. This paper discussed the dynamic characteristics in terms of fundamental frequency and fundamental mode shape of the non-seismically designed bridges bridge crossing Sungai Simpang Kiri located at Batu Pahat by free vibration analysis (FVA) to make a start toward the seismic evaluation or retrofit of the bridge.…”

Section: Introductionmentioning

confidence: 99%

“…This paper discussed the dynamic characteristics in terms of fundamental frequency and fundamental mode shape of the non-seismically designed bridges bridge crossing Sungai Simpang Kiri located at Batu Pahat by free vibration analysis (FVA) to make a start toward the seismic evaluation or retrofit of the bridge. These dynamic characteristics used as a basis for the finite element model updating, structural control, damage detection, condition assessment and long-term health monitoring of the structure [3]. a Corresponding author : ayuyusoff90@gmail.com …”

Section: Introductionmentioning

confidence: 99%

Identification of Dynamic Characteristics of Bridge Crossing Sungai Simpang Kiri Using Free Vibration Analysis

Yusoff

Sooria²,

Kamarudin

et al. 2016

MATEC Web of Conferences

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Abstract. This paper presents a free vibration analysis (FVA) of a reinforced concrete bridge crossing Sungai Simpang Kiri, located at Batu Pahat. The bridge consists of three simple spans with a total length of 70meter (20 m + 30 m + 20 m). The concrete deck of the bridge is supported by concrete tensioned pre-stressed T-beam. The girders are sitting on two abutments at both ends and two piers as internal supports. The base of the piers is considered as fixed base and the abutments were free to move. The structural dynamic characteristics of the bridge in terms of fundamental frequency and mode shapes were obtained analytically using SAP2000 three-dimensional finite element modeling software. It is very important to evaluate the dynamic characteristics of reinforced concrete bridges that can lead to the detection of stiffness reduction or damage of the structure. From the analysis, the fundamental frequency of the bridge was 1.94 Hz with fundamental mode shape is critical in transverse bending mode.

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“…This test would give the true picture of the behavior of the structure without artificial excitation. In the past research, ambient vibration test widely applied to different types of bridges such as a double-deck bridge [9], prestressed concrete box girder bridge [3,6], continuous girder bridge [15] , reinforced concrete bridge [6], cable stayed bridge [15] and stone masonry bridge [12] It is important to measure the dynamic characteristics for both newly constructed and existing bridge to understand better their dynamic behavior under normal traffic loads and also during extreme loads such as those causes by seismic events or high wind [5]. Dynamic characteristics in terms of natural frequencies, mode shape and damping ratios are important for accurately predicting the dynamic response of the structure at design and reassessment stage [2].…”

Section: Introductionmentioning

confidence: 99%

Ambient Vibration Test on Reinforced Concrete Bridges

Idris

Boon

Kamarudin

et al. 2016

MATEC Web of Conferences

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Abstract. An investigation was carried out to determine dynamic characteristic of reinforced concrete (RC) bridges by using ambient vibration test (AVT). The ambient vibration sources on bridges may come from traffic, wind, wave motion and seismic events. AVT describes the dynamic characteristics of the bridge and ground by measuring the natural frequencies using highly sensitive seismometer sensor. This test is beneficial due to light weight equipment and smaller number of operator required, cheap and easy to be handled. It is able to give a true picture of the bridge dynamic behavior without any artificial force excitation when vibration data is recorded. A three-span reinforced concrete bridge located in Sri Medan, Batu Pahat, Johor was measured by using microtremor equipment consist of three units of 1 Hz eigenfrequency passive sensors used in this test was performed in normal operating condition without excitation required from any active sources or short period noise perturbations. Ten measurements were conducted on the bridge deck and ten measurements on the ground surface in order to identify the natural frequencies of the bridge. Several peak frequencies were identified from three components of Fourier Amplitude Spectra (FAS) in transverse (NorthSouth), longitudinal (East-West) and vertical (Up-Down) direction as well as squared average Horizontal to Vertical Spectral Ratio (HVSR) of ground response, computed by using Geopsy software. From the result, it was expected the bridge have five vibration modes frequencies in the range of 1.0 Hz and 7.0 Hz with the first two modes in the transverse and longitudinal direction having a frequency 1.0 Hz, the third mode is 2.2 Hz in transverse direction, fourth and fifth mode is 5.8 Hz and 7.0 Hz. For ground natural frequencies are in range 1.0 Hz to 1.3 Hz for North-South direction and 1.0 Hz to 1.6 Hz for East-West direction. Finally the results are compared with several empirical formulas for simple verification.

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Experimental and analytical studies on dynamic characteristics of a large span cable-stayed bridge

Cited by 160 publications

References 19 publications

Experimental and Numerical Investigation of the Effect of Standing People on Dynamic Properties of a Beam-Like Bridge

Experimental and Numerical Investigation of the Effect of Standing People on Dynamic Properties of a Beam-Like Bridge

Identification of Dynamic Characteristics of Bridge Crossing Sungai Simpang Kiri Using Free Vibration Analysis

Ambient Vibration Test on Reinforced Concrete Bridges

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