Analying the transverse distribution coefficient of the cracking hollow slab bridge

2011 ◽  
Author(s):  
Jun Tao Kang ◽  
Xue Feng Wang
Keyword(s):  
Distribution Coefficient ◽  
Transverse Distribution

Research on the Vehicle Effects of the Assembled Bridge by Influence Surface

2014 ◽  
Vol 889-890 ◽  
pp. 1410-1413
Author(s):  
Dong Liang ◽  
Zi Shuo Li ◽  
Hui Cai Shen
Keyword(s):  
Distribution Coefficient ◽  
Calculation Method ◽  
New Method ◽  
Accurate Calculation ◽  
Transverse Distribution ◽  
Bridge Safety ◽  
Influence Line ◽  
Vehicle Load

Accurate calculation of the vehicle load is the foundation for the middle and small bridge safety. Longitudinal influence line and transverse distribution coefficient are used in traditional calculation method of vehicle load. This method brings a little big error because of the simplification. A new method based on influence surface is offered in this paper. The analysis results show that the new method can meet more accurate demand.

Static Loading Test and Evaluation of Single Beam of Highway Prestressed Concrete Hollow Slab Beam Bridge

2014 ◽  
Vol 587-589 ◽  
pp. 1718-1722
Author(s):  
Tai Li Chen ◽  
He Li ◽  
Zhi Hao Wang ◽  
Xiao Ke Li
Keyword(s):  
Distribution Coefficient ◽  
Bearing Capacity ◽  
Prestressed Concrete ◽  
Static Loading ◽  
Limit State ◽  
Loading Test ◽  
Transverse Distribution ◽  
Single Beam ◽  
Capacity Evaluation ◽  
Static Loading Test

Since the main beams of a prestressed concrete hollow slab beam Highway Bridge stored for too long, in order to assess its bearing capacity, static loading test and bearing capacity evaluation of single beam was conducted. The hollow slab beam at the locations where the transverse distribution coefficient is biggest was chose for testing, and the transverse distribution coefficient at midspans of the slab beam was calculated by the hinged slab method. By comparing the theoretical and measured values of displacement and stain at key points of the beam, structural performance of the beam was finally evaluated. The test results showed that both the strength and stiffness of the beam was conforming to the requirements of the specification and able to satisfy normal use requirements in serviceability limit state.

The Research on Load Transverse Distribution Coefficient of Prefabricated Skew-Plate Bridge Based on ANSYS

2011 ◽  
Vol 255-260 ◽  
pp. 1176-1180
Author(s):  
Han Bing Liu ◽  
Yan Yi Sun
Keyword(s):  
Finite Element ◽  
Distribution Coefficient ◽  
Internal Force ◽  
Skew Angle ◽  
Transverse Distribution ◽  
Skew Plate ◽  
Element Technique ◽  
Modified Formula ◽  
Skew Angles ◽  
Main Bridge

In order to calculate the internal force of prefabricated skew-plate bridge (PSPB), the force state of PSPB with different skew angles is analyzed based on finite element technique. For the side slab, the value of load transverse influence lines of PSPB with different skew angles is obtained, at the same time, the relation between load transverse distribution coefficient and skew angle has been studied. Then a practical formula is derived according to the contrast curve. The comparison diagram of internal force between PSPB and main bridge with the same deck width is established, and a modified formula is deduced. This process provides a new idea on calculation of PSPB, and simplifies the design of PSPB.

Mathematical modelling of salt purification by recrystallization. Countercurrent arrangement

1986 ◽  
Vol 51 (11) ◽  
pp. 2481-2488
Author(s):  
Benitto Mayrhofer ◽  
Jana Mayrhoferová ◽  
Lubomír Neužil ◽  
Jaroslav Nývlt
Keyword(s):  
Steady State ◽  
Simple Model ◽  
Mathematical Modelling ◽  
Distribution Coefficient ◽  
Mother Liquor ◽  
Equilibrium Temperature ◽  
Operating Conditions ◽  
Limiting Case

The paper presents a simple model of recrystallization with countercurrent flows of the solution and the crystals being purified. The model assumes steady-state operating conditions, an equilibrium between the outlet streams of each stage, and the same equilibrium temperature and distribution coefficient for all stages. With these assumptions, the model provides the basis for analyzing the variation in the degree of purity as a function of the number of recrystallization stages. The analysis is facilitated by the use of a diagram constructed for the limiting case of perfect removal of the mother liquor from the crystals between the stages.

Computational Parameters in Correlation Analysis: Gas-Water Distribution Coefficient

1999 ◽  
Vol 64 (11) ◽  
pp. 1727-1747 ◽  
Author(s):  
George R. Famini ◽  
Dalia Benyamin ◽  
Christina Kim ◽  
Rattiporn Veerawat ◽  
Leland Y. Wilson
Keyword(s):  
Correlation Analysis ◽  
Distribution Coefficient ◽  
Water Distribution ◽  
Solvation Energy ◽  
Linear Solvation Energy Relationships ◽  
Linear Solvation Energy Relationship ◽  
Energy Relationships ◽  
Linear Solvation Energy ◽  
Water Equilibrium ◽  
Linear Solvation

Theoretical linear solvation energy relationships (TLSER) combine computational molecular parameters with the linear solvation energy relationship (LSER) of Kamlet and Taft to characterize and predict properties of compounds. This paper examines the correlation of the gas-water equilibrium constant for 423 compounds with the TLSER parameters. Also, it describes new parameters designed to improve the TLSER information content.

Consideration on modeling of Nb sorption onto clay minerals

2020 ◽  
Vol 108 (11) ◽  
pp. 873-877
Author(s):  
Tetsuji Yamaguchi ◽  
Saki Ohira ◽  
Ko Hemmi ◽  
Logan Barr ◽  
Asako Shimada ◽  
...  
Keyword(s):  
Distribution Coefficient ◽  
Clay Minerals ◽  
Safety Assessment ◽  
Distribution Coefficients ◽  
Surface Species ◽  
Complex Species ◽  
Intermediate Depth ◽  
Speciation Model ◽  
Surface Phases ◽  
High Distribution Coefficient

AbstractSorption distribution coefficient (Kd) of niobium-94 on minerals are an important parameter in safety assessment of intermediate-depth disposal of waste from core internals etc. The Kd of Nb on clay minerals in Ca(ClO4)2 solutions were, however, not successfully modeled in a previous study. The high distribution coefficients of Nb on illite in Ca(ClO4)2 solutions were successfully reproduced by taking Ca–Nb–OH surface species into account. Solubility of Nb was studied in Ca(ClO4)2 solutions and the results were reproduced by taking an aqueous Ca–Nb–OH complex species, CaNb(OH)6+, into account in addition to previously reported Nb(OH)6− and Nb(OH)72−. Based on this aqueous speciation model, the Ca–Nb–OH surface species responsible for the sorption of Nb on illite in Ca(ClO4)2 solutions was presumed to be X_OCaNb(OH)6. Although uncertainties exist in the speciation of aqueous Ca–Nb–OH species, the result of this study proposed a possible mechanism for high distribution coefficient of Nb on illite in Ca(ClO4)2 solutions. The mechanism includes Ca–Nb–OH complex formation in aqueous, solid and surface phases.

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