scholarly journals Design and Construction Optimization of Shield Cutterhead Inspection Shaft Based on Numerical Analysis

2021 ◽  
Vol 676 (1) ◽  
pp. 012057
Author(s):  
Guoqing Zhao ◽  
Jintong Liu ◽  
Suyun Meng ◽  
Yichao Zhang ◽  
Yuyou Yang
Keyword(s):  
Numerical Analysis ◽  
Construction Optimization ◽  
Design And Construction

On Numerical Simulation of the Stepped Soil-Nail Wall

2013 ◽  
Vol 353-356 ◽  
pp. 692-695
Author(s):  
Chang Zhi Zhu ◽  
Quan Chen Gao
Keyword(s):  
Numerical Simulation ◽  
Numerical Analysis ◽  
Internal Force ◽  
Numerical Results ◽  
Analysis Model ◽  
Foundation Pit ◽  
Soil Nails ◽  
Soil Nail ◽  
Soil Nail Wall ◽  
Design And Construction

Based on an Engineering Example which was supported by the stepped soil-nail wall, a numerical analysis model was established by FLAC3D,and the process of the excavation and supporting was simulated, and the numerical results of the soil nails internal force and foundation pit deformation were obtained. The simulated result was consistent with the measured results. It shows that the method of FLAC3D numerical analysis can be used to the numerical analysis of foundation pit excavation and supporting, and it will provide the basis for the design and construction of practice project.

Numerical Research on Relationship between Displacement and Ground Overloading of Soil Nailing with FLAC

2012 ◽  
Vol 446-449 ◽  
pp. 1343-1347
Author(s):  
Jian Ping Sun ◽  
Guang Biao Shao ◽  
Zong Bao Jiang
Keyword(s):  
Numerical Analysis ◽  
Vertical Displacement ◽  
Soil Nailing ◽  
Flac 3D ◽  
Numerical Research ◽  
Set Up ◽  
Design And Construction

Based on an engineering example,the FLAC-3D was applied to set up numerical analysis,analyzing the influence of the overloading acting position and the magnitude on the horizontal and vertical displacement of the foundation pit.Some useful conclusion was obtained,which will offer reference to the design and construction of the soil nailing.

Reliability Calibration of a Waves–Icebergs Interaction Load Combination Factor

2004 ◽  
Author(s):  
Ricardo O. Foschi ◽  
Michael Isaacson ◽  
Norman Allyn
Keyword(s):  
Numerical Analysis ◽  
Offshore Structures ◽  
Combined Effects ◽  
Limit States ◽  
Sea State ◽  
Load Effect ◽  
Design Load ◽  
Load Combination ◽  
Wave Parameters ◽  
Design And Construction

The Canadian Standards Association [1] has developed and published a code for the design and construction of fixed offshore structures. One of the limit states relates to the combined effects of waves and iceberg collision loading. The Code uses a load combination factor to determine the design load effect. The present paper describes a recent study on the appropriateness of the recommended value of the combination factor. The study involves a numerical analysis in which loads have been calculated, at different probability levels, for a range of iceberg and wave parameters, considering waves alone, an iceberg alone, and an iceberg and waves in combination. The paper thereby makes recommendations for the load combination factor as a function of iceberg and sea state parameters.

Parametric Design and Construction Optimization of a Freeform Roof Structure

2011 ◽  
pp. 137-144
Author(s):  
Johan Kure ◽  
Thiru Manickam ◽  
Kemo Usto ◽  
Kenn Clausen ◽  
Duoli Chen ◽  
...  
Keyword(s):  
Parametric Design ◽  
Roof Structure ◽  
Construction Optimization ◽  
Design And Construction

Optimization of Excavation Method in Portal Section of Neighborhood Tunnel Based on the Monitoring Results

2013 ◽  
Vol 645 ◽  
pp. 515-518
Author(s):  
Jun Min Shen ◽  
Zhong Ming Su ◽  
Xiao Hui Xue
Keyword(s):  
Finite Element ◽  
Numerical Analysis ◽  
Analytical Model ◽  
Surrounding Rock ◽  
Blasting Vibration ◽  
Step Method ◽  
Dynamic Design ◽  
Tunneling Method ◽  
Roof Support ◽  
Design And Construction

Based on the excavation of portal section in Linwu neighborhood tunnel, items of the blasting vibration, vault settlement and level convergence are measured in the field construction. And according to the actual exposed surrounding rock, the finite element analytical model is established. The results of monitoring measurement and numerical analysis indicate that, under the circumstances of advance large pipe-shed roof support and varied surrounding rock, the original excavation method is not reasonable, still existing the optimization space. The construction of changed step method is feasible, which reflects the requirement of dynamic design and construction in New Austrian Tunneling Method.

Study and Model Test on the Anchorage Area for Chongqing Jiayue Bridge’s PC Box Girder

2011 ◽  
Vol 243-249 ◽  
pp. 1597-1604
Author(s):  
Shu Hong Sun ◽  
Xue Song Zhang ◽  
An Bang Gu
Keyword(s):  
Numerical Analysis ◽  
Model Test ◽  
Research Work ◽  
Special Structure ◽  
Prototype Model ◽  
Box Girder ◽  
Reduced Scale ◽  
Design And Construction

The research work is described about the numerical analysis and reduced scale prototype model test of Chongqing Jiayue Bridge’s PC beam, which has some special structure details. The structure’s practicality of the PC box girder’s anchorage is demonstrated through computing, at the same time, the security of the anchorage undertaking kiloton force is experimented by test. Some conclusions and suggestions are drowning through such research work which are helpful to design and construction.

Numerical Analysis on Load-Displacement Curves of Pile Bearing Uplift Load with Expanded Plates

2013 ◽  
Vol 709 ◽  
pp. 599-602
Author(s):  
Meng Hua Fan
Keyword(s):  
Finite Element ◽  
Numerical Analysis ◽  
Bearing Capacity ◽  
Equivalent Diameter ◽  
Finite Element Models ◽  
Uplift Load ◽  
Plate Shape ◽  
Load Displacement ◽  
Deep Depth ◽  
Design And Construction

Several axisymmetric pile-soil finite element models were established to analyze load-placement curves. It was proved that the bearing capacity of the pile with plates is more than the equivalent diameter pile, and the subjacent plate has a remarkable potentiality, so the plate of pile should be at deep depth; the span of adjacent plates should not be less than the critical one, or the upper plate and the subjacent one will influence each other and reduce the uplift bearing capacity; the plate shape and height affect less than diameter to pile bearing capacity. The result is helpful to the design and construction of similar piles.

Simple Harmonic Excitation Numerical Analysis and Experimental Study of Space Bidirectional Beam String Structure

2011 ◽  
Vol 368-373 ◽  
pp. 3-11
Author(s):  
Cheng Jie Ye ◽  
Zao Liang Gao
Keyword(s):  
Finite Element ◽  
Numerical Analysis ◽  
Dynamic Response ◽  
Experimental Studies ◽  
Time History ◽  
Theoretical Data ◽  
Harmonic Excitation ◽  
Space Harmonic ◽  
Finite Element Software ◽  
Design And Construction

In this paper,a two-way winding-beam space-harmonic excitation beam string under the action of the dynamic response has been studied to capture the dynamic response of the structure of the law, identify the structure of the weak components,and for the design and construction to provide the necessary theoretical data. Using ANSYS finite element software to numerical analysis and reduced scale quarter ratio of model test research methodology to study,using experimental test results and finite element numerical analysis of mutual authentication.Numerical analysis taking into account the geometric non-linear structure,carried out static analysis,modal analysis,harmonic analysis and transient response time-history analysis. Experimental studies of the dynamic signal acquisition and analysis and processing, through the comparative analysis of data, master of the winding space for a two-way steel beam string dynamic response law obtained structural response of the frequency response range,weak location and distribution of components of type of structural design and construction process were proposed.

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