Response of shear-deficient reinforced circular RC columns under lateral impact loading

Demartino, Cristoforo; Wu, Jiguang; Xiao, Yan

doi:10.1016/j.ijimpeng.2017.06.011

Cited by 130 publications

(29 citation statements)

References 30 publications

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“…Design guidelines outline procedures for vibration serviceability checks, but it is noticeable that most of these assume that the action is deterministic [10], yet this is stochastic, and it would be reasonable to incorporate its variability in the loading models. However, it should be mentioned that other loads on bridges should be considered in the design procedures such as seismic, wind, and impact loads (e.g., [11][12][13][14][15][16]). …”

Section: Shock and Vibrationmentioning

confidence: 99%

“…To conclude, the simplified and approximated procedure to evaluate the mode shape using static analysis of the FE model of the footbridge requires the following steps: (i) evaluation of RD (see (15)) using the FE model of the footbridge (i.e., evaluation of the end rotation and midspan deflection, and , due to a uniform load), (ii) conversion of RD to an equivalent RL using (16) (Figure 3), (iii) evaluation of , using (14) (Figure 3), and (iv) evaluation of the mode shapes (see (10)) using as input the obtained , in the boundary conditions and solving the eigenvalue problem obtaining , 1 , 2 , 3 , and 4 . Finally, by integrating the mass per unit length, , over the mode shape, the modal mass can be obtained.…”

Section: Footbridge Characteristics and Mechanical Modelmentioning

confidence: 99%

“…To evaluate the actual support condition in terms of RL using (16), evaluation of RD defined through (15) is required; this was done by applying a uniform load in lateral and vertical directions to the FE model and evaluating the corresponding end rotation and midspan deflection . It should be pointed out that the uniform load coming from the deck is allocated to the nodes of the FE model using a tributary area load criterion.…”

Section: Application To a Steel Truss Footbridgementioning

confidence: 99%

“…It should be pointed out that the uniform load coming from the deck is allocated to the nodes of the FE model using a tributary area load criterion. Finally, RD was converted into an equivalent RL using (16). A synthesis of the footbridge dynamic characteristic is given in Table 4.…”

Section: Application To a Steel Truss Footbridgementioning

confidence: 99%

See 3 more Smart Citations

Deterministic and Probabilistic Serviceability Assessment of Footbridge Vibrations due to a Single Walker Crossing

Demartino

Avossa

Ricciardelli

2018

Shock and Vibration

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This paper presents a numerical study on the deterministic and probabilistic serviceability assessment of footbridge vibrations due to a single walker crossing. The dynamic response of the footbridge is analyzed by means of modal analysis, considering only the first lateral and vertical modes. Single span footbridges with uniform mass distribution are considered, with different values of the span length, natural frequencies, mass, and structural damping and with different support conditions. The load induced by a single walker crossing the footbridge is modeled as a moving sinusoidal force either in the lateral or in the vertical direction. The variability of the characteristics of the load induced by walkers is modeled using probability distributions taken from the literature defining a Standard Population of walkers. Deterministic and probabilistic approaches were adopted to assess the peak response. Based on the results of the simulations, deterministic and probabilistic vibration serviceability assessment methods are proposed, not requiring numerical analyses. Finally, an example of the application of the proposed method to a truss steel footbridge is presented. The results highlight the advantages of the probabilistic procedure in terms of reliability quantification.

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Section: Shock and Vibrationmentioning

confidence: 99%

Section: Footbridge Characteristics and Mechanical Modelmentioning

confidence: 99%

Section: Application To a Steel Truss Footbridgementioning

confidence: 99%

Section: Application To a Steel Truss Footbridgementioning

confidence: 99%

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Deterministic and Probabilistic Serviceability Assessment of Footbridge Vibrations due to a Single Walker Crossing

Demartino

Avossa

Ricciardelli

2018

Shock and Vibration

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“…Liu et al [4] studied the failure mode and transformation mechanism of axially compressed reinforced concrete columns under lateral impact loads using the finite element method. Demartino et al [5] and Cai et al [6] carried out an experimental study on the impact resistance of scaled reinforced concrete bridge piers. Zhou et al [7] established a reliability analysis method for shear performance of reinforced concrete piers under falling rock impact load and discussed the influence of different parameters on the shear performance of columns.…”

Section: Introductionmentioning

confidence: 99%

Study on Cumulative Damage Law of Stainless Steel-Reinforced Concrete Columns under Step Impact Loading

Zhang

2019

Advances in Materials Science and Engineering

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In this study, an ultrahigh drop hammer impact test system was adopted for multiple horizontal impact tests on stainless steel-reinforced concrete columns and ordinary-reinforced concrete columns with the same longitudinal reinforcement diameter. The damage performance after impact was studied, and the finite element model was established. The test measured the impact force, displacement, cracking of the specimen during the impact, and the concrete damage near the bottom of the specimen. The test results showed that the failure mode of the stainless steel-reinforced concrete specimen under multiple impacts was the same as that of the ordinary reinforced concrete specimen. Under the same impact conditions, the maximum impact force, the maximum displacement, and the damage degree of stainless steel-reinforced concrete column specimen were lower than those of the ordinary reinforced concrete specimen.

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Experimental investigation of axially loaded reinforced concrete square column subjected to lateral low‐velocity impact loading

Yılmaz

Kıraç

2019

Structural Concrete

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Design of reinforced concrete (RC) columns has been carried out under the effect of static loads and dynamic loads with long return period such as earthquake and wind. However, due to reasons such as the vehicle crash to the bridges of highway or seaway, rock fall, the collision of masses with the effect of flood and landslide, the effect of the blast-induced air-shock wave to buildings that have strategic importance, RC column may subject to sudden dynamic impact loads. For this reason, it is considered that the impact behavior of RC columns, which are highly important vertical load-bearing members for the stability of structures, should be investigated and taken account of the design stage. For this purpose, an experimental study was performed. Sixteen RC square columns with the scale of 1/3 were manufactured and tested under impact load by using drop-weight test setup that was specially designed by authors for impact tests of beam, column, and slab specimens. In the experimental study, the axial load level applied to RC column, input impact energy, and shear reinforcement ratio were taken as variables and with the effect of lateral impact energy applied to RC columns, time-history of impact load acting on columns, the acceleration and the displacement values of columns were measured. The effect of experimental variables on the impact behavior of RC columns was determined and interpreted in detail. It has been demonstrated that axial load level, impact energy, and shear reinforcement ratio have a significant effect on the impact behavior of RC columns. K E Y

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Response of shear-deficient reinforced circular RC columns under lateral impact loading

Cited by 130 publications

References 30 publications

Deterministic and Probabilistic Serviceability Assessment of Footbridge Vibrations due to a Single Walker Crossing

Deterministic and Probabilistic Serviceability Assessment of Footbridge Vibrations due to a Single Walker Crossing

Study on Cumulative Damage Law of Stainless Steel-Reinforced Concrete Columns under Step Impact Loading

Experimental investigation of axially loaded reinforced concrete square column subjected to lateral low‐velocity impact loading

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