scholarly journals On the Influence of Pile Foundation Settlement of Existing High-Rise Buildings on the Surrounding Buildings

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Ke Chen
Keyword(s):  
Numerical Simulation ◽  
Pile Foundation ◽  
Pile Group ◽  
Single Pile ◽  
Foundation Settlement ◽  
Squeezing Effect ◽  
Engineering Construction ◽  
High Rise ◽  
Problems And Solutions ◽  
Influence Degree

Pile foundation settlement is a kind of foundation form. In recent years, because of the increasing population and economic development in China, high-rise buildings have emerged in people’s vision. Due to the development of engineering construction, the type and technology of pile foundation, as well as the control and detection of the single pile and pile group have been greatly improved. In view of the influence of pile foundation settlement on the surrounding environment of high-rise buildings, this paper mainly studies from the angle of single pile settlement and pile group settlement. According to the construction method of pile foundation, the static pressure sinking pipe cast-in-place pile can produce soil squeezing effect in pile foundation construction. The experimental analysis was carried out. According to the engineering example, finite element numerical simulation is used to analyze the influence degree of pile foundation settlement on adjacent buildings with and without raft, and the feasibility and correctness of numerical simulation are analyzed by comparing the simulation results with the measured values. This paper mainly studies the influence of pile foundation settlement of high-rise buildings on surrounding buildings from the aspects of problems and solutions.

Numerical Simulation of Deformation Pattern to Pile Raft Foundation

2011 ◽  
Vol 71-78 ◽  
pp. 4460-4462
Author(s):  
Ya Dong Chen ◽  
Xu Dong Wang ◽  
Yue Xin She ◽  
Jiang Dong Cai
Keyword(s):  
Numerical Simulation ◽  
Displacement Field ◽  
Pile Foundation ◽  
Deformation Pattern ◽  
Single Pile ◽  
Deep Foundation ◽  
Raft Foundation ◽  
Study Results ◽  
Good Consistency ◽  
Foundation Failure

ABAQUS is used to study the load-settlement characteristic and soil displacement field of the pile raft foundation. Numerical results are compared to the outputs from model test. The study results show that good consistency is obtained from the comparison of results between numerical simulation and model tests. Small pile space will weaken the single pile bearing capacity. The compress region is mainly centralized in the soil beneath the pile tip to the 3b space pile raft foundation, which presents a massive deep foundation failure pattern. As the increase of pile space, the compress region under cap shifts upward. The displacement influence depth of 6b space pile foundation is smaller than 3b space pile raft foundation, and it is destroyed by the lateral squeeze of the soil around piles.

Numerical Analysis of the Influence of Vertical Load on the Horizontal Bearing Capacity of Single Pile

2011 ◽  
Vol 374-377 ◽  
pp. 1947-1952 ◽  
Author(s):  
Zhao Yun Xiao ◽  
Guo Xun Zhang ◽  
Wei Xu ◽  
Zhong Ming Xue
Keyword(s):  
Numerical Simulation ◽  
Bearing Capacity ◽  
Pile Foundation ◽  
Sandy Soils ◽  
Single Pile ◽  
Horizontal Load ◽  
Clayey Soils ◽  
Vertical Load ◽  
Concrete Pile ◽  
Finite Element Numerical Simulation

It is a complicated progress of interaction between pile and soil when pile is under both vertical load and horizontal load. This paper analyzes the variation of stress, strain, deformation and deflection of the pile body by finite element numerical simulation of single bored concrete pile under vertical load together with horizontal load. Based on the existing research results, conclusions could be that the vertical load can increase horizontal bearing capacity of the pile in sandy soils, but horizontal bearing capacity of the pile in clayey soils is more complicated. Hope that the simulation can provide some references for the design of pile foundation.

scholarly journals Numerical Study for Centrifugal Model Tests of a Single Pile Foundation Installed in Sandy Deposits

2007 ◽  
Vol 23 (4) ◽  
pp. 389-398 ◽  
Author(s):  
C. W. Lu
Keyword(s):  
Numerical Simulation ◽  
Pile Foundation ◽  
Numerical Study ◽  
Computation Time ◽  
Model Tests ◽  
Unit Weight ◽  
Single Pile ◽  
3D Fem ◽  
Static Tests ◽  
Centrifugal Model

AbstractIt is believed that a dynamic analysis is urgently required to provide a more reliable numerical method for seismic evaluation of a full system, which includes foundation, super structure, and ground in earthquake zones such as Taiwan and Japan. A centrifugal model test of pile foundation is simulated numerically using a three-dimensional finite-element model (3D-FEM) code in this study. In the numerical simulation, parameters of the sandy soils in tij model that are derived from accumulated experiences in static tests are first calibrated by centrifugal vibration tests of sandy ground. Model tests of a single pile foundation installed in grounds of same unit weight of soil as in the static tests are then simulated using the calibrated parameters. The numerical simulation resulted in a good agreement with the corresponding physical model tests. By comparing the computed and the observed results, one can find and confirm that it is necessary to employ an appropriate soil model to reproduce dynamic soil behavior due to major vibration. Representation of pile by beam element in the numerical analysis is applicable when attention is paid on the response acceleration of top of pile foundation, on soils at some distances to the pile foundation, and on bending moment of the pile in a stiffer ground. Equal-displacement boundary condition for two-side boundaries is proven to be efficient. To reduce the computation time, the assumption of a constant damping of viscous matrix is acceptable.

scholarly journals Large Deformation Numerical Simulation of the Set up Effect Induced by Sand Compaction Pile Group Installation

2020 ◽  
Vol 319 ◽  
pp. 06003
Author(s):  
Chenyu Kang ◽  
Jiangtao Yi
Keyword(s):  
Numerical Simulation ◽  
Field Tests ◽  
Pile Group ◽  
Centrifuge Model Test ◽  
Single Pile ◽  
Consolidation Process ◽  
Strength Change ◽  
Multi Stage ◽  
Set Up ◽  
Good Agreement

The improvement of soil undrained shear strength induced by installation of sand compaction pile (SCP), called set up effect, has observed in a number of field tests, but not been considered by the design code. Due to the lack of effective technical means, the numerical simulation of this problem mainly focused on single pile in the past studies. In this paper, a multi-stage Eulerian-Lagrangian (MSEL) technique is used to simulate the installation and consolidation process of double piles. Firstly, a centrifuge model test is used to benchmark this technique and reached a good agreement. Through the analysis of a single pile results, the strength growth curve conforming to the growth law is fitted. Finally, based on the results of single and double piles and considering the sheltering and accumulating effect, a method to predict the soil strength change after SCP group installation is proposed.

Numerical Simulation for Pile Group in Water Flume of 2-D Tidal Flow

2013 ◽  
Vol 779-780 ◽  
pp. 1171-1175
Author(s):  
Jiang Nan Wang ◽  
Shi Fang Tang ◽  
Chun Ma
Keyword(s):  
Numerical Simulation ◽  
Pile Foundation ◽  
Tidal Flow ◽  
Flow Simulation ◽  
Pile Group ◽  
Roughness Coefficient ◽  
Water Port ◽  
Flume Tests ◽  
Physical Model Tests ◽  
Operational Methods

In order to study the influence on pile foundation in the numerical Simulation of 2-D tidal flow, the governing equations for numerical model of 2-D tidal flow with pile foundation have been induced, and the numerical water flume of 2-D tidal flow for pile foundation has been built. And then, with an adjusted friction coefficient and an additional roughness coefficient of the pile foundation from some physical model tests, the tidal flow field has been simulated, which was about a piled wharf of the first phase project in Yangshan deep-water Port. It indicated that the results from this numerical simulation were very close to some from water flume tests in laboratory. So some applied foundation and operational methods about the two tidal flow simulation technologies for some pile foundation have been provided.

scholarly journals FLOATING RAFT-PILE FOUNDATIONS ANALYSIS USING NUMERICAL SIMULATION

2011 ◽  
Vol 7 (2) ◽  
pp. 40
Author(s):  
Helmy Darjanto
Keyword(s):  
Numerical Simulation ◽  
Pile Foundation ◽  
Load Transfer ◽  
Numerical Models ◽  
Pile Group ◽  
Vertical Displacement ◽  
Constitutive Law ◽  
Pile Foundations ◽  
Pile Groups ◽  
Foundation Soil

The numerical simulation of raft-pile foundations subjected to vertical load is presented in this paper. For comparison study, numerical models of single raft and pile groups are completed. The numerical models are adopting the elastic constitutive law for the materials. The stresses and vertical displacement of the models are observed. The behaviour of the raft-pile foundation compared to the pile-group is then investigated. The results using the same external load show that the raft-pile foundation has smallest displacement compared to the others. In terms of stresses, the raft shows contribution of the load transfer to the underneath soil as well as the piles. Moreover, the behaviour of the raft-pile system appears to be a combination of the pile-group and the single raft. In order to estimate the bearing capacity of the raft-pile system, it is suggested that the contribution of the raft should be included in addition of the piles’. Keywords: raft-pile foundation, soil-structure interaction, floating foundation

Numerical Analysis of the Influence of Shield Tunneling to Adjacent Loaded Piles

2012 ◽  
Vol 538-541 ◽  
pp. 548-551
Author(s):  
Feng Bin Zhu
Keyword(s):  
Numerical Analysis ◽  
Case History ◽  
Pile Foundation ◽  
Pile Group ◽  
Single Pile ◽  
Bending Moments ◽  
Shield Tunneling ◽  
Railway Line ◽  
Axial Forces ◽  
Horizontal Displacements

Suzhou Light Railway Line 1 is used as a case history to investigate the effects of the non-homogeneity of soil, distance to the tunnel and cushion cap on the pile foundation performance including horizontal displacements, settlements, axial forces and bending moments. According to behaviors of the single pile and pile group under different concentrated loads, it is concluded that with tunneling, the loaded pile foundation will rotate toward to the tunnel and their bearing capacity is influenced significantly.

DEVELOPMENT OF CONSTRUCTIVE SOLUTIONS VERTICAL REINFORCED BASES OF SLAB FOUNDATION OF HIGH-RISE BUILDINGS IN SEISMIC AREAS

2016 ◽  
Vol 4 (1) ◽  
pp. 0-0
Author(s):  
Максим Мариничев ◽  
Maksim Marinichev ◽  
Игорь Ткачев ◽  
Igor Tkachev
Keyword(s):  
Numerical Simulation ◽  
Pile Foundation ◽  
Numerical Calculations ◽  
Clay Soils ◽  
Foundation Slab ◽  
High Rise ◽  
High Rise Building ◽  
Slab Foundation ◽  
Reinforced Bases ◽  
Base Series

The article presents the results of a numerical simulation of the behavior of high-rise building on weak clay soils, during which the deformations of different variants of foundations were analyzed. The main variants of foundations were examined: slab, traditional pile-slab construction and pile foundation with an intermediate base. Series of numerical calculations in spatial statement determine the deformability of the "Base" - "Structures of the building"- system revealed a favorable response for the use of the intermediate base between the piles and foundation slab of the building. Variant of pile foundation with an intermediate base (vertical reinforced base of slab foundation) allowed not only reduce the absolute deformation of base of the building, but also reduce the effort in the pile elements compared to the traditional pile-slab foundation. Therefore, it was proposed as the most rational for this building

Sign in / Sign up

Export Citation Format

Share Document