Research on the Bearing Capacity of Double Row Steel Sheet Pile Reinforcement Depth of the Based on Soil between Piles

2016 ◽  
Vol 25 ◽  
pp. 127-132
Author(s):  
Sun Hui
Keyword(s):  
Steel Sheet ◽  
Bending Moment ◽  
Element Model ◽  
Internal Force ◽  
Soil Reinforcement ◽  
Sheet Pile ◽  
Double Row ◽  
Peak Displacement ◽  
Retaining Structure ◽  
Before And After

With the complex force characteristics of double row steel sheet pile retaining structure. Through the PLAXIS 3D finite element model is established, the soil with HS-Small constitutive model, the cement soil reinforcement of double row steel sheet pile support retaining structure of pile soil, the simulation and analysis of the soil between piles reinforcement depth of double row steel sheet piles by the force and displacement. Analysis shows that with the increase of reinforcement depth:1） before and after the peak displacement of two rows of steel sheet pile becomes smaller; 2）outside row of pile axial force variation trend of different;3） outside row of steel sheet pile peak shear force and bending moment increases first and then decreases; 4）the peak reached maximum value when the reinforcement depth have different; 5）internal row pile internal force of absolute value was significantly larger than that of the outer row of piles, should according to the actual needs of the project using the appropriate reinforcement depth.

scholarly journals Internal Force on and Deformation of Steel Assembled Supporting Structure of Foundation Pit under Thermal Stress

2021 ◽  
Vol 11 (5) ◽  
pp. 2225
Author(s):  
Fu Wang ◽  
Guijun Shi ◽  
Wenbo Zhai ◽  
Bin Li ◽  
Chao Zhang ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Bending Moment ◽  
High Strength ◽  
Element Model ◽  
Internal Force ◽  
Foundation Pit ◽  
Dimensional Finite Element ◽  
Influence Of Temperature On ◽  
Scale Experiment ◽  
Three Dimensional Finite Element

The steel assembled support structure of a foundation pit can be assembled easily with high strength and recycling value. Steel’s performance is significantly affected by the surrounding temperature due to its temperature sensitivity. Here, a full-scale experiment was conducted to study the influence of temperature on the internal force and deformation of supporting structures, and a three-dimensional finite element model was established for comparative analysis. The test results showed that under the temperature effect, the deformation of the central retaining pile was composed of rigid rotation and flexural deformation, while the adjacent pile of central retaining pile only experienced flexural deformation. The stress on the retaining pile crown changed little, while more stress accumulated at the bottom. Compared with the crown beam and waist beam 2, the stress on waist beam 1 was significantly affected by the temperature and increased by about 0.70 MPa/°C. Meanwhile, the stress of the rigid panel was greatly affected by the temperature, increasing 78% and 82% when the temperature increased by 15 °C on rigid panel 1 and rigid panel 2, respectively. The comparative simulation results indicated that the bending moment and shear strength of pile 1 were markedly affected by the temperature, but pile 2 and pile 3 were basically stable. Lastly, as the temperature varied, waist beam 2 had the largest change in the deflection, followed by waist beam 1; the crown beam experienced the smallest change in the deflection.

Analysis of the Effects on Optimization Design about Double-Row Piles Retaining Structure

2012 ◽  
Vol 204-208 ◽  
pp. 72-78
Author(s):  
Yu Wang ◽  
Yan Ting Yang ◽  
Feng Yu ◽  
Guang Lei Hu
Keyword(s):  
Optimization Design ◽  
Internal Force ◽  
Composite Foundation ◽  
Foundation Pit ◽  
Double Row ◽  
Retaining Structure ◽  
Supporting Structure ◽  
Arch Effect ◽  
Space Effect ◽  
Foundation Pile

Double-row piles retaining structure has been widely used in the project now, but the stress mechanism of double-row pile is more complex; Its internal force and deformation are affected by many factors. Understanding and mastering its effects has an important significance for the design and the optimization of double-row pile supporting structure. According to the comparison of the measured data and theoretical calculation about original support scheme and optimized support plan and combined with the soil test data, this paper takes the Jinan Cultural Arts Center(Theatre) stage bin foundation pit as an example to analyse the main effects of optimization design about double-pile supporting structure. The results show that soil shear strength, soil arch effect, influence of CFG composite foundation, pile-beam synergy effect and space effect of foundation pit play an important role for optimization design about double-pile supporting structure.

Analysis of Internal Force and Deformation for Pit Retaining Structure by Considering the Interaction of Pile Stiffness

2013 ◽  
Vol 838-841 ◽  
pp. 397-401
Author(s):  
Ming Li ◽  
Ren Wang Liang
Keyword(s):  
Finite Difference ◽  
Engineering Design ◽  
Axial Force ◽  
Influence Factors ◽  
Bending Moment ◽  
Internal Force ◽  
Equivalent Stiffness ◽  
Deep Excavation ◽  
Retaining Structure ◽  
Design Software

In this paper, taking one deep excavation engineering as an example, modeling by the FLAC3D finite difference software, combining with the Lizheng deep excavation supporting design software, taking the equivalent stiffness of combination pile as 2.300-4.789(10-2m3), and analyzing the pile body bending moment, anchor axial force and pit deformation by considering interaction of pile stiffness. In addition, in this paper the influence factors of pile stiffness has been discussed, and provides a reference for the engineering design.

Sensitivity Analysis of Continuous Curved Bridge under Different Curvature Radius

2014 ◽  
Vol 587-589 ◽  
pp. 1650-1654
Author(s):  
Mu Xin Luo ◽  
Jing Hong Gao
Keyword(s):  
Moving Load ◽  
Bending Moment ◽  
Element Model ◽  
Internal Force ◽  
Curvature Radius ◽  
Moving Loads ◽  
Dead Load ◽  
Actual Structure ◽  
Curved Bridge ◽  
The Dead

In the condition of the same span, to change the continuous curved bridge's curvature radius and under the dead load and moving load to compare how the internal force changes in different curvature radius. The finite element model is established to simulate the actual structure by Midas Civil. Results in a continuous curved bridge which main span of less than 60m, under the dead load, bending moment (-y) is unlikely to change, reinforced by a straight bridge can meet the requirements; under the moving loads, the curvature radius of the bending moment (-y) has little influence, should focus on increase in torque and bending moment (-z).

Optimization Design of Coupling Beam of the Frame Double-Row Piles

2013 ◽  
Vol 353-356 ◽  
pp. 918-923
Author(s):  
Yong Jiang Shen ◽  
Hai Hao Cui ◽  
Biao Deng ◽  
Wen Kang
Keyword(s):  
Optimization Design ◽  
Large Scale ◽  
Element Model ◽  
Internal Force ◽  
Coupling Beam ◽  
Double Row ◽  
Moment Distribution ◽  
Section Size ◽  
The Common ◽  
The Moment

Double-row piles are often used for the large-scale landslide control. The frame double-row piles are the common types. Coupling beam is an important component of frame double-row piles. It plays an important role in transferring landslide thrust. A finite element model of landslide was established to evaluate the effect of section size and length of coupling beam on the internal force of double-row piles. It was found that the internal force of double-row piles increased with the length of coupling beam, and found that it was unfavorable for the moment distribution of double-row piles if the section size of coupling beam was too large or small. Therefore, the reasonable length of coupling beam is equal to the height of the piles section. With the reasonable moment distribution of double-row piles, the section size of coupling beam has an optimum value.

Analysis of Soil Reinforcement in Cantilever Retaining Structure for Foundation Pit in Soft Soil Region

2013 ◽  
Vol 321-324 ◽  
pp. 137-140
Author(s):  
Yan Chao Ma ◽  
Ying Hui Chen ◽  
Yan Lian Pan ◽  
Shuai Wang ◽  
Qing Shui Liu
Keyword(s):  
Soft Soil ◽  
Element Model ◽  
Shallow Foundation ◽  
Soil Reinforcement ◽  
Critical Depth ◽  
Regular Pattern ◽  
Lateral Deformation ◽  
Foundation Pit ◽  
Retaining Structure ◽  
Degree Of Reinforcement

Cantilever retaining structure is often applied to shallow foundation pit supporting, but it causes large deformation in soft soil region. Reinforcement of soil can solve this problem, and a finite element model of foundation pit which based on elastic fulcrum method is founded to research the regular pattern how the depth and degree of soil reinforcement effects the deformation and the inner force of the cantilever retaining structure. The result shows that the lateral deformation reduces with the increases of the depth and degree of soil reinforcement, and critical depth and degree of reinforcement can been founded. The change of inner force caused by depth and degree of soil reinforcementis small. So it is important to reasonably decide the depth and degree of soil reinforcement.

On Dredging Renovation of High-Piled Wharf by FEA

2014 ◽  
Vol 1065-1069 ◽  
pp. 613-618
Author(s):  
Zhi Hui Liu ◽  
Liang De He ◽  
Ying Fa He ◽  
Yuan Yuan Lu
Keyword(s):  
Three Dimensional ◽  
Bending Moment ◽  
Finite Element Models ◽  
Sheet Pile ◽  
Bank Slope ◽  
Before And After ◽  
Dimensional Finite Element ◽  
Pile Caps ◽  
Three Dimensional Finite Element ◽  
Sheet Pile Wall

In this paper, high-piled wharf is reinforced with a view to studying how the wharf dredging renovation affects its structure. As regarding the problem that the original balance of the bank slope is destroyed after upgrading, two retrofit schemes that set sheet pile wall at anterior wharf and low-piled caps at surcharge area are conducted to analyze the bank slope deformation and the inter force before and after wharf retrofit by means of three-dimensional finite element models. The analysis shows that for the scheme of setting sheet pile wall at front wharf, the inter force of the anterior pile station reduced while that of the post pile station near the stack area remains large. For the other scheme, the bending moment of the pile that closes to stack area significantly decreases after setting low pile caps. If both schemes are adopted coherently, the reinforcement effects to the anterior and post pile stations would be improved greatly.

scholarly journals EXPERIMENTAL AND NUMERICAL STUDIES OF BENDING MOMENT OF STEEL SHEET PILE WALL COMPOSED OF LONG AND SHORT PILES

2016 ◽  
Vol 72 (1) ◽  
pp. 1-20
Author(s):  
Katsuhiko KOIZUMI ◽  
Toshiyuki HIRAI ◽  
Koichi MURAKAMI ◽  
Takahiro SUGANO ◽  
Yoshiyuki MORIKAWA ◽  
...  
Keyword(s):  
Steel Sheet ◽  
Bending Moment ◽  
Sheet Pile ◽  
Numerical Studies ◽  
Sheet Pile Wall

GA-Optimization on Weiling Space of Steel Sheet Piles Construction

2012 ◽  
Vol 204-208 ◽  
pp. 28-32
Author(s):  
Rui Jie Zheng ◽  
Su Fu ◽  
Jin Guo
Keyword(s):  
Deep Sea ◽  
Strong Influence ◽  
Steel Sheet ◽  
Bending Moment ◽  
Internal Force ◽  
Optimization Models ◽  
Objective Functions ◽  
Advantages And Disadvantages ◽  
Construction Methods ◽  
Current Water

The advantages and disadvantages of two construction methods of steel sheet piles cofferdam are introduced and analyzed in the presented work, the analysis result of three representative models indicate that support setting plays an important role and has a strong influence on the internal force of steel sheet piles. Using genetic algorithm (GA) and matlab finite element and user-defined objective functions, two optimization models are proposed for traditional and inverse construction method. The work of this paper demonstrates that using reasonable support space can effective reduce the maximum bending moment of the steel sheet piles, it means that steel sheet piles can break current water depth limitation and application in deep-sea construction.

The Influences of Interpile Soil Reinforcement on the Performance of Structures with Double-Row Piles

2012 ◽  
Vol 170-173 ◽  
pp. 195-198
Author(s):  
Qing Ke Zhu
Keyword(s):  
Engineering Application ◽  
Internal Force ◽  
Calculation Model ◽  
Reinforced Soil ◽  
Soil Reinforcement ◽  
Double Row ◽  
Finite Element Software ◽  
Study Results ◽  
Practical Engineering ◽  
Design Construction

We established a calculation model for retaining structures with double-row piles by using the midas GTS finite-element software, considering the interaction between pile and soil and adopting the contact element method, on the basis of a practical engineering application. We then determined a reasonable elastic modulus of reinforced soil bodies, thereby enabling the study of the influences of the reinforcement depth and width in the interpile soil on the internal force and displacement of the retaining structure with double-row piles. We present suggestions for reinforcement depth and width. The study results provide valuable reference for engineering design, construction, and cost control.

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