A Simplified Calculation Method for Stress Concentration Ratio of Composite Foundation with Rigid Piles

2018 ◽  
Vol 22 (9) ◽  
pp. 3263-3270 ◽  
Author(s):  
Linchang Miao ◽  
Fei Wang ◽  
Weihua Lv
Keyword(s):  
Stress Concentration ◽  
Calculation Method ◽  
Concentration Ratio ◽  
Composite Foundation ◽  
Stress Concentration Ratio ◽  
Simplified Calculation ◽  
Simplified Calculation Method

Additional Stress Distribution in DJM Pile Composite Foundation and Simplified Calculation Method

2012 ◽  
Vol 594-597 ◽  
pp. 274-279
Author(s):  
Fang Ding He ◽  
Guang Jun Guo ◽  
Jian Qing Wu
Keyword(s):  
Stress Distribution ◽  
Calculation Method ◽  
Influential Factors ◽  
Composite Foundation ◽  
Good Effect ◽  
Additional Stress ◽  
Soft Foundation ◽  
Simplified Calculation ◽  
Simplified Calculation Method

Although DJM-Pile have a good effect on strengthening soft foundation,theories about additional stress are too complex or too simply to be used in project well.By adopting FEM software with considering of friction between soil and pile,simulate the additional stress in composite foundation because of DJM pile construction and compare with results gotten in Bossinesq method.The comparison shows that the distribution of additional stress is very similar.So considering several major influential factors,the paper updates the Bossinesq method and brings forward a simplified calculation method.

Research on Confidence Degree of Enterprise Alliance under the Environment of Network-Based Manufacturing

2012 ◽  
Vol 605-607 ◽  
pp. 516-520
Author(s):  
Xian Zhang
Keyword(s):  
Calculation Method ◽  
New Products ◽  
Partner Selection ◽  
Confidence Degree ◽  
Set Up ◽  
Simplified Calculation ◽  
Simplified Calculation Method

Under the environment of the network-based manufacturing, Ihe goal of the formation of enterprise alliance is to expeditiously complete the development of new products to gain the market. In order to meet the chance for enterprises alliance to complete the goal largest, this paper provided the concept of confidence degree and its corresponding calculation method. After studying the confidence degree of the total enterprise alliance, the simplified calculation method is set up for the big alliance. This calculation mathod can embody the essence of the partner selection better, and provide a rational strategy for establishing the enterprise alliance.

scholarly journals Simplified analytical solution for stress concentration ratio of piled embankments incorporating pile–soil interaction

2021 ◽  
Author(s):  
Qiang Luo ◽  
Ming Wei ◽  
Qingyuan Lu ◽  
Tengfei Wang
Keyword(s):  
Stress Concentration ◽  
Analytical Solution ◽  
High Speed ◽  
Concentration Ratio ◽  
Differential Settlement ◽  
Fundamental Parameter ◽  
Soil System ◽  
Rigid Pile ◽  
Stress Concentration Ratio ◽  
Piled Embankments

AbstractPiled embankments have been extensively used for high-speed rail over soft soils because of their effectiveness in minimizing differential settlement and shortening the construction period. Stress concentration ratio, defined as the ratio of vertical stress carried by pile heads (or pile caps if applicable) to that by adjacent soils, is a fundamental parameter in the design of piled embankments. In view of the complicated load transfer mechanism in the framework of embankment system, this paper presents a simplified analytical solution for the stress concentration ratio of rigid pile-supported embankments. In the derivation, the effects of cushion stiffness, pile–soil interaction, and pile penetration behavior are considered and examined. A modified linearly elastic-perfectly plastic model was used to analyze the mechanical response of a rigid pile–soil system. The analytical model was verified against field data and the results of numerical simulations from the literature. According to the proposed method, the skin friction distribution, pile–soil relative displacement, location of neural point, and differential settlement between the pile head (or cap) and adjacent soils can be determined. This work serves as a fast algorithm for initial and reasonable approximation of stress concentration ratio on the design aspects of piled embankments.

A Study on the Simplified Calculation Method for the Residual Ultimate Strength of Damaged Hull Structures

2016 ◽  
Author(s):  
Kimihiro Toh ◽  
Shunsuke Maeda ◽  
Takao Yoshikawa
Keyword(s):  
Ultimate Strength ◽  
Calculation Method ◽  
Fe Analysis ◽  
Structural Members ◽  
Average Strain ◽  
Non Linear ◽  
Compressive Loads ◽  
Calculation Results ◽  
Simplified Calculation ◽  
Simplified Calculation Method

In order to obtain the non-linear average stress-average strain relationships (σ-ε curves) of damaged structural members under both tensile and compressive loads, the systematical calculations are performed using the non-linear FE analysis (FEA) code, LS-DYNA, and the idealized σ-ε curves of damaged structural members are estimated from FEA results. In addition, by introducing the idealized σ-ε curves of damaged structural members to the simplified calculation program, which is developed by authors and based on the Smith’s method, the residual ultimate strength of damaged hull structures is calculated. The residual ultimate strength of damaged hull structures is also calculated utilizing FEA, the calculation results by the simplified calculation program are compared with the results obtained from FE analyses so as to examine the accuracy of simplified calculation method.

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