Study on Dynamic Response of Bridge Pile Foundation at the Permafrost Regions under Seismic Load

2012 ◽  
Author(s):  
Zhijian Wu ◽  
Lanmin Wang ◽  
Tuo Chen
Keyword(s):  
Dynamic Response ◽  
Pile Foundation ◽  
Seismic Load ◽  
Bridge Pile Foundation ◽  
Permafrost Regions

Research on Punched Pile Construction–Induced Dynamic Response of Bridge Pile Foundation

2011 ◽  
Vol 243-249 ◽  
pp. 2581-2585
Author(s):  
Yan Hua She ◽  
Hua You Su ◽  
Zheng Xue Xiao
Keyword(s):  
Dynamic Response ◽  
Impact Energy ◽  
Pile Foundation ◽  
Microseismic Monitoring ◽  
Vibration Velocity ◽  
Engineering Practice ◽  
Vibration Acceleration ◽  
Testing Data ◽  
Bridge Pile Foundation ◽  
First Time

By use of the microseismic monitoring system, the dynamic response of punched pile construction of bridge pile foundation is studied and discussed for the first time. Wave data of loads acting on the construction is group-collected by means of the microseismic experiment on site. Then the waveform, vibration frequency and energy of testing data are analyzed. On the basis of the results, the weaken rules of vibration acceleration and energy are studied, and the effect of impact energy on the vibration velocity is analyzed. It shows that impact energy attenuates exponentially with the distance from the epicentre. The conclusion establishes the theoretical basis for studying the vibrant characteristic of punched pile construction, and provides valuable reference for engineering practice to take effective measures to reduce construction vibration.

scholarly journals Shaking Table Test On Dynamic Response of Bridge Pile Foundation Near Fault Under Strong Earthquake

2021 ◽  
Author(s):  
Cong Zhang ◽  
Zhong Ju Feng ◽  
Yuan Yuan Kong ◽  
Yun Hui Guan ◽  
Yun Xiu Dong ◽  
...  
Keyword(s):  
Dynamic Response ◽  
Ground Motion ◽  
Pile Foundation ◽  
Strong Earthquake ◽  
Shaking Table Test ◽  
Hanging Wall ◽  
Shaking Table ◽  
Wall Effect ◽  
Hanging Wall Effect ◽  
Bridge Pile Foundation

Abstract Taking Puqian bridge as the prototype, a 1:30-scale pile-soil-fault interaction model was established. Through the shaking table test, the difference of dynamic response of pile foundation on both sides of fault under 0.15~0.60g ground motion intensity was studied. The pile acceleration, pile top relative displacement, and pile bending moment on both sides of the fault are compared respectively. Research results showed that under the action of a strong earthquake, the pile foundation on the hanging wall was greatly affected by ground motion, and “the hanging wall effect” was significant. As the ground motion intensity increased, the “hanging wall effect” of the pile foundation was more obvious. Combined with the fundamental frequency response and the test phenomenon, when ground motions intensity was strong, cracks appeared near the joint of pile top and platform, soil interface, and bedrock surface. When building a bridge pile foundation near the fault, the seismic design of the pile foundation on the hanging wall of the fault is mainly considered.

A brief discussion on the causes and treatment measures of bridge pile foundation defects

2015 ◽  
pp. 45-46
Author(s):  
Juan Li ◽  
Wenhong Ren ◽  
Jihong Wang ◽  
Zhao Zhang ◽  
Xiaohui He ◽  
...  
Keyword(s):  
Pile Foundation ◽  
Treatment Measures ◽  
Bridge Pile Foundation

Dynamic response of tower crane with pile foundation

2006 ◽  
Author(s):  
N Suemasa ◽  
T Katada ◽  
K Itoh ◽  
F Arai ◽  
S Tamate
Keyword(s):  
Dynamic Response ◽  
Pile Foundation ◽  
Tower Crane

scholarly journals Experimental and Numerical Study on Modal Dynamic Response of Water-Surrounded Slender Bridge Pier with Pile Foundation

2017 ◽  
Vol 2017 ◽  
pp. 1-20 ◽  
Author(s):  
Yulin Deng ◽  
Qingkang Guo ◽  
Lueqin Xu
Keyword(s):  
Dynamic Response ◽  
Water Level ◽  
Pile Foundation ◽  
Numerical Study ◽  
Fluid Structure Interaction ◽  
Bridge Pier ◽  
Experimental Program ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Tip Mass

This paper presents an experimental program performed to study the effect of fluid-structure interaction on the modal dynamic response of water-surrounded slender bridge pier with pile foundation. A reduced scale slender bridge pier specimen is built and tested through forced vibration method. The vibration periods of the first four lateral modes, including the first two modes along x-axis and the first two modes along y-axis, are measured based on the specimen submerged by 16 levels of water and designated with 4 levels of tip mass. Three-dimensional (3D) finite-element models are established for the tested water-pier system and analyzed under various combined cases of water level and tip mass. Percentage increases of vibration periods with respect to dry vibration periods (i.e., vibration periods of the specimen without water) are determined as a function of water level and tip mass to evaluate the effect of fluid-structure interaction. The numerical results are successfully validated against the recorded test data. Based on the validated models, the modal hydrodynamic pressures are calculated to characterize the 3D distribution of hydrodynamic loads on the pier systems. The research provides a better illumination into the effect of fluid-structure interaction on the modal dynamic response of deepwater bridges.

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