Large-scale shaking table model test on seismic performance of bridge-pile-foundation slope with anti-sliding piles: a case study

Zhang, Chonglei; Jiang, Guanlu; Su, Lijun; Lei, Da; Liu, Weiming; Wang, Zhimeng

doi:10.1007/s10064-019-01614-y

Cited by 34 publications

(12 citation statements)

References 53 publications

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“…Because there are few direct engineering cases of bridge instability caused by earthquakeinduced landslide revival, we did not specify a fixed engineering prototype in this test, mainly to explore the regularity of failure law of bridge-landslide parallel system. But, considering the size of the shaking table model box and the application of the model in some practical construction projects, combined with the previous bridge engineering construction practice of relevant specifications, the gravity distortion model is selected [12].…”

Section: Model Scaling Relationsmentioning

confidence: 99%

“…e latter is chosen for this test. Section view e soil mass at the shear outlet slides and deforms seriously; collapse failure of pile foundation Yousuotun Bridge along the Chenglan HSR [12] e slope deformation reduces the horizontal resistance of pile foundation, and the pile foundation has annular transverse cracks and pile foundation collapse Zaoshugou Bridge (Lanzhou City) [19] e shear outlet is severely deformed, and there are obvious vertical and horizontal circular cracks in the pile foundation Dongla Bridge (Sichuan Province) [13] To obtain the transmission mechanism of the pier and pile affected by the surrounding landslide soil, the influence of the geometric size effect is considered. Referring to the research results of Yao [19] and others, a short pine pile is selected to simulate the bridge in this test.…”

Section: Similar Materialsmentioning

confidence: 99%

“…At the beginning of the test, white noise scanning is carried out to test the initial dynamic characteristics of the model, that is, natural frequency. e natural frequency of landslide is a parameter to describe the dynamic characteristics of landslide, which can be obtained by white noise excitation test [12]. e natural frequency can be expressed by the transfer function, and the frequency characteristics of the landslide acceleration response can be obtained by using the transfer function.…”

Section: Initial Dynamic Characteristics Of Test Modelmentioning

confidence: 99%

“…e PSSI effect changes significantly with the change of wave frequency content. Zhang et al [12] used the Yousuotun Bridge as a prototype to conduct multiple sets of large-scale shaking table model tests to study the force and deformation characteristics of bridge pier foundation piles under different waves, as well as the seismic performance and spectrum response laws of high and steep slopes. Luo et al [13] used the method of risk analysis to explore the interaction between the Dongla Bridge and the Dongla Ancient Landslide.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic Response of Bridge‐Landslide Parallel System under Earthquake

Lai

et al. 2022

Advances in Civil Engineering

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In order to further understand the instability mechanism and geohazard causation when the main sliding path of the slope body is parallel to the path of the bridge, the corresponding bridge-landslide parallel system is constructed for shaking table tests. This paper summarizes the combination forms of bridge-landslide model under different position and focused on the slope body located above the bridge deck. Firstly, based on the shaking table test results of El Centro (1940), the failure behavior of bridge-landslide parallel system was evaluated, and the changes of acceleration and deformation of bridge pile were subsequently analyzed. Then, the interaction bridge structure and sliding body were explained by the spectral features. The main conclusions are as follows. First, in the model test, the landslide belongs to the thrust-type landslide. Due to the barrier function of the bridge, the main failure site of landslide occurs in the middle and trailing edge of slope body. At the same time, the acceleration value of earthquake waves is 0.3 g, which is the key to this variation. Second, the acceleration response of the measuring points on the bridge pile and landslide increases with the increase of ground elevation. If the slope structure is damaged severely, the deformation response of weak interlayer is inconsistent with the surrounding soil structure. Third, with the increase of excitation power, the dominant frequency of bridge-landslide parallel system gradually transitions from low to high frequency rate, and the interaction of the parallel system weakens the influence of river direction on frequency. Finally, under the same working condition, the dynamic response of the measuring points has obvious regularity with the change of situation. But the response of the same points is not regular due to the different earthquake excitation intensity.

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Section: Model Scaling Relationsmentioning

confidence: 99%

Section: Similar Materialsmentioning

confidence: 99%

Section: Initial Dynamic Characteristics Of Test Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dynamic Response of Bridge‐Landslide Parallel System under Earthquake

Lai

et al. 2022

Advances in Civil Engineering

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“…Sun et al [ 11 ] described several characteristic quantities, such as the peak acceleration (PGA) amplification coefficient, acceleration response spectrum and vertical settlement deformation in order to study the seismic response characteristics of the underlying bedrock accumulation slope before and after the reinforcement of anti-sliding row piles. Zhang et al [ 12 ] studied the seismic response characteristics of the slope of the bridge foundation reinforced by anti-slide piles through a shaking table test, and proposed that the peak value of the acceleration response was correlated with the peak value of the specific frequency band of the input seismic wave based on the acceleration response spectrum. Gischig et al [ 13 ] obtained that the amplification coefficient of slope frequency is highly sensitive to the change of cracks by using the numerical simulation method.…”

Section: Introductionmentioning

confidence: 99%

Seismic Response Evaluation of High-Steep Slopes Supported by Anti-Slide Piles with Different Initial Damage Based on Shaking Table Test

et al. 2022

Self Cite

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In order to study the instability development process of the slope reinforced by anti-slide piles under earthquake conditions, the dynamic response characteristics of the slope are usually taken as the main characteristics, and the model test and numerical simulation are the main research methods. In this paper, a shaking table model test is designed and completed to investigate the influence of anti-slide piles with different initial damage on the failure mode of high and steep slope under earthquake conditions. The changes in velocity, strain and natural frequency during slope vibration are tested in combination with cloud maps when sinusoidal waves of different accelerations with a peak value of 5 Hz are applied. Thus, the differences of slope failure development process and dynamic response characteristics are obtained. The experimental results show that the anti-slide pile with different initial damage has obvious influence on the slope instability process. Under the condition of good anti-slide pile quality, the failure development of the slope behind the pile is limited to soil sliding on top of the slope, slope sliding and overburden sliding; the front slope foot of pile mainly forms shear belt and local sliding. With the decrease in the initial mass of the anti-slide pile, the slope failure develops into topsoil sliding, slope sliding and deep integral sliding; analogously, the failure of the slope in front of the pile develops into a whole slip along the slip belt. The natural frequency cloud map can directly reflect the damage location of the slope, and the frequency change rate is positively correlated with the cumulative shear strain. It shows that the macro-failure characteristics of the model slope change well when the natural frequency is used as the sensitive index to measure the influence of vibration on the model slope. The threshold value of the natural frequency change rate can distinguish different development stages of the slope; 1% is the threshold value of stage II, and 1.5% is the threshold value of stage III.

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