A simplified method for calculating load transverse distribution coefficient of skew bridge

2016 ◽  
pp. 297-301
Author(s):  
Hua-Lei Jin ◽  
Xiao-Bing Tang ◽  
Lei Jiang
Keyword(s):  
Distribution Coefficient ◽  
Transverse Distribution ◽  
Skew Bridge ◽  
Simplified Method

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.

A simplified method of emulsion coating and development for quantitative electron microscopic radioautography

1978 ◽  
Vol 36 (2) ◽  
pp. 64-65
Author(s):  
K. Yoshida ◽  
F. Murata ◽  
S. Ohno ◽  
T. Nagata
Keyword(s):  
Mass Production ◽  
Identical Condition ◽  
Microscopic Level ◽  
Electron Microscopic Level ◽  
Electron Microscopic ◽  
Simplified Method ◽  
Complicated Process ◽  
Critical Problems ◽  
Electron Microscopic Radioautography ◽  
Quantitative Radioautography

IntroductionSeveral methods of mounting emulsion for radioautography at the electron microscopic level have been reported. From the viewpoint of quantitative radioautography, however, there are many critical problems in the procedure to produce radioautographs. For example, it is necessary to apply and develop emulsions in several experimental groups under an identical condition. Moreover, it is necessary to treat a lot of grids at the same time in the dark room for statistical analysis. Since the complicated process and technical difficulties in these procedures are inadequate to conduct a quantitative analysis of many radioautographs at once, many factors may bring about unexpected results. In order to improve these complicated procedures, a simplified dropping method for mass production of radioautographs under an identical condition was previously reported. However, this procedure was not completely satisfactory from the viewpoint of emulsion homogeneity. This paper reports another improved procedure employing wire loops.

Rate of Sublimation of Ice by Radiative Heating in Freeze-Etching

1980 ◽  
Vol 38 ◽  
pp. 618-619
Author(s):  
Yeshayahu Talmon
Keyword(s):  
Heat Flux ◽  
Freeze Fracture ◽  
Constant Heat Flux ◽  
Radiative Heating ◽  
Constant Heat ◽  
Entire Sample ◽  
Simplified Method ◽  
Freeze Etching ◽  
Sublimation Rates ◽  
Fractured Surface

To bring out details in the fractured surface of a frozen sample in the freeze fracture/freeze-etch technique,the sample or part of it is warmed to enhance water sublimation.One way to do this is to raise the temperature of the entire sample to about -100°C to -90°C. In this case sublimation rates can be calculated by using plots such as Fig.1 (Talmon and Thomas),or by simplified formulae such as that given by Menold and Liittge. To achieve higher rates of sublimation without heating the entire sample a radiative heater can be used (Echlin et al.). In the present paper a simplified method for the calculation of the rates of sublimation under a constant heat flux F [W/m2] at the surface of the sample from a heater placed directly above the sample is described.

516: A Simplified Method to Estimate the Absolute Renal Uptake of 99MTC-DMSA: Evaluation with a New Model using the Radioactivity of Nephrectomy Specimens as Reference

2005 ◽  
Vol 173 (4S) ◽  
pp. 140-141
Author(s):  
Mariana Lima ◽  
Celso D. Ramos ◽  
Sérgio Q. Brunetto ◽  
Marcelo Lopes de Lima ◽  
Carla R.M. Sansana ◽  
...  
Keyword(s):  
New Model ◽  
Renal Uptake ◽  
Simplified Method ◽  
The Absolute
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