scholarly journals SHAKING TABLE TEST OF A LARGE-SCALE MODEL ON THE DAMAGES OF CAISSON-TYPE QUAY WALL AND PILE FOUNDATION DUE TO LIQUEFACTION-INDUCED LATERAL SPREADING

2010 ◽  
Vol 66 (1) ◽  
pp. 115-125
Author(s):  
Kentaro TABATA ◽  
Masayoshi SATO
Keyword(s):  
Pile Foundation ◽  
Large Scale ◽  
Shaking Table Test ◽  
Lateral Spreading ◽  
Shaking Table ◽  
Scale Model ◽  
Large Scale Model ◽  
Quay Wall

scholarly journals Seismic Response of a Bridge Pile Foundation during a Shaking Table Test

2019 ◽  
Vol 2019 ◽  
pp. 1-16 ◽  
Author(s):  
Yunxiu Dong ◽  
Zhongju Feng ◽  
Jingbin He ◽  
Huiyun Chen ◽  
Guan Jiang ◽  
...  
Keyword(s):  
Seismic Wave ◽  
Pile Foundation ◽  
Large Scale ◽  
Amplification Factor ◽  
Shaking Table Test ◽  
Seismic Intensity ◽  
Shaking Table ◽  
Acceleration Amplification ◽  
Bedrock Surface ◽  
Bridge Pile Foundation

Puqian Bridge is located in a quake-prone area in an 8-degree seismic fortification intensity zone, and the design of the peak ground motion is the highest grade worldwide. Nevertheless, the seismic design of the pile foundation has not been evaluated with regard to earthquake damage and the seismic issues of the pile foundation are particularly noticeable. We conducted a large-scale shaking table test (STT) to determine the dynamic characteristic of the bridge pile foundation. An artificial mass model was used to determine the mechanism of the bridge pile-soil interaction, and the peak ground acceleration range of 0.15 g–0.60 g (g is gravity acceleration) was selected as the input seismic intensity. The results indicated that the peak acceleration decreased from the top to the bottom of the bridge pile and the acceleration amplification factor decreased with the increase in seismic intensity. When the seismic intensity is greater than 0.50 g, the acceleration amplification factor at the top of the pile stabilizes at 1.32. The bedrock surface had a relatively small influence on the amplification of the seismic wave, whereas the overburden had a marked influence on the amplification of the seismic wave and filtering effect. Damage to the pile foundation was observed at 0.50 g seismic intensity. When the seismic intensity was greater than 0.50 g, the fundamental frequency of the pile foundation decreased slowly and tended to stabilize at 0.87 Hz. The bending moment was larger at the junction of the pile and cap, the soft-hard soil interface, and the bedrock surface, where cracks easily occurred. These positions should be focused on during the design of pile foundations in meizoseismal areas.

Theoretical design and experimental verification of a 1/50 scale model of a quayside container crane

2011 ◽  
Vol 226 (6) ◽  
pp. 1644-1662 ◽  
Author(s):  
Y L Jin ◽  
Z G Li
Keyword(s):  
Dynamic Characteristics ◽  
Large Scale ◽  
Shaking Table Test ◽  
Shaking Table ◽  
Scale Model ◽  
Engineering Structures ◽  
Scaled Model ◽  
Container Crane ◽  
Comparison Results ◽  
Quayside Container Crane

An effective way to study the dynamic performances and seismic behaviours of large-scale engineering structures is using a scale model. This article aims to develop a geometric-scaled model of the 1/50 for a quayside container crane such that the dynamic characteristics of the prototype can be accurately predicted from the relevant features of this scale model. To this end, a detailed design process for the main components of a 1/50 scale model of the quayside container crane was first presented according to the similitude law. Then, a hammering modal test and the Ling dynamic system shaking table test were successively carried out to obtain the dynamic characteristics of this 1/50 scale model. Furthermore, the experimental results were compared with the computed results of the prototype obtained from numerical simulation and they showed a fairly good agreement. From the comparison results, it can be seen that the model design is instructive enough to provide some valuable information and practical use for professionals and researchers involved in the design of large-scale port facilities.

LATERAL SPREADING DAMAGE TO SHEET-PILE WALLS AND PILE FOUNDATIONS REPRODUCED BY TSUKUBA LARGE-SCALE SHAKE TABLE

2011 ◽  
Vol 05 (03) ◽  
pp. 231-240 ◽  
Author(s):  
MASAYOSHI SATO ◽  
KENTARO TABATA
Keyword(s):  
Large Scale ◽  
Ground Deformation ◽  
Residual Deformation ◽  
Inertial Force ◽  
Lateral Spreading ◽  
Shaking Table ◽  
Pile Foundations ◽  
Sheet Pile ◽  
Quay Wall ◽  
Pile Type

Shaking table tests of two large-scale models with lateral spreading of liquefiable deposit under earthquake ground motions were performed to reveal the failure mechanism of sheet-pile-type quay walls and pile foundations behind them. These tests simulated the lateral spreading behavior of the deposit with slow rate of ground deformation, which was assumed to occur even after earthquake shaking. The test results also indicated that a deposit's residual deformation induced by the cyclic motions due to an earthquake and a structure's inertial force largely influence the deformations of the quay wall and the pile foundation.

Dynamic response of soil–pile–structure system subjected to lateral spreading: shaking table test and parallel finite element simulation

2020 ◽  
Vol 57 (4) ◽  
pp. 497-517 ◽  
Author(s):  
Lei Su ◽  
Hua-Ping Wan ◽  
Shaghayegh Abtahi ◽  
Yong Li ◽  
Xian-Zhang Ling
Keyword(s):  
Finite Element ◽  
Dynamic Response ◽  
Shaking Table Test ◽  
Lateral Spreading ◽  
Shaking Table ◽  
Dynamic Responses ◽  
Fe Model ◽  
System Parameters ◽  
Quay Wall ◽  
Parallel Finite Element

This paper investigates the dynamic response of soil–pile–structure interaction (SPSI) system behind a quay wall in liquefiable soil and laterally spreading ground through both large-scale shaking table test and parallel finite element (FE) simulation. A three-dimensional (3D) nonlinear FE model is developed to simulate the target SPSI system using the parallel modeling technique with high computational efficiency. This FE model of the SPSI system is validated by the shaking table test results. The validated FE model is firstly used to further explore the dynamic behavior of the SPSI system with details on the global responses of the SPSI system and the local responses. Secondly, the validated FE model is used for global sensitivity analysis (GSA) to fully assess the effects of uncertain parameters on the interested dynamic responses of the SPSI system. The experimental and numerical investigations show that liquefaction-induced lateral spreading significantly affects the movement of the clay crust at the landside and the internal forces in piles behind the quay wall. GSA results show that the relative importance of system parameters depends on the dynamic responses of interest, while the interaction effects among system parameters on dynamic responses are not evident.

RANCANG BANGUN PERANGKAT EKSPERIMENTASI PROSES PIROLISIS BIOMASA GELOMBANG MIKRO

2013 ◽  
Vol 14 (2) ◽  
Author(s):  
Noor Fachrizal
Keyword(s):  
Large Scale ◽  
Continuous Model ◽  
Biomass Energy ◽  
Scale Model ◽  
Small Scale ◽  
Laboratory Apparatus ◽  
Liquid Form ◽  
Large Scale Model ◽  
Bio Oil ◽  
Pyrolysis Of Biomass

Biomass such as agriculture waste and urban waste are enormous potency as energy resources instead of enviromental problem. organic waste can be converted into energy in the form of liquid fuel, solid, and syngas by using of pyrolysis technique. Pyrolysis process can yield higher liquid form when the process can be drifted into fast and flash response. It can be solved by using microwave heating method. This research is started from developing an experimentation laboratory apparatus of microwave-assisted pyrolysis of biomass energy conversion system, and conducting preliminary experiments for gaining the proof that this method can be established for driving the process properly and safely. Modifying commercial oven into laboratory apparatus has been done, it works safely, and initial experiments have been carried out, process yields bio-oil and charcoal shortly, several parameters are achieved. Some further experiments are still needed for more detail parameters. Theresults may be used to design small-scale continuous model of productionsystem, which then can be developed into large-scale model that applicable for comercial use.

Sign in / Sign up

Export Citation Format

Share Document