Wheel-rail force measuring device and measuring method

The invention relates to a wheel-rail force measuring device and a wheel-rail force measuring method, and relates to the technical field of railway engineering. The wheel-rail force measuring device comprises a sensing assembly, a calibration assembly and a control assembly. The sensing assembly is arranged on the wheel rail and is provided with a transverse sensing unit and a vertical sensing unit; the calibration assembly comprises a transverse calibration unit and a vertical calibration unit, the transverse calibration unit is used for enabling the transverse sensing unit to generate a first sensing electric signal, and the vertical calibration unit is used for enabling the vertical sensing unit to generate a second sensing electric signal; the control assembly is electrically connected with the transverse sensing unit and the vertical sensing unit. In the calibration state, the control assembly receives the first sensing electric signal and the second sensing electric signal and monitors ...

Special purpose cement for low alkali glass fiber reinforced concrete and clinker production technology

The present invention relates to a low-alkali cement. Its formula includes 40-50% of improved sulpho-aluminate cement clinker, 5-20% of gypsum and 20-45% of admixture, in which the aluminium-sulfur ratio of the clinker is greater than 3.82, and its ingredients are 5-9% of SiO2, 28-40% of Al2O3, 2-4% of Fe2O3, 39-45% of CaO, 7-11% of SO3 and 1-5% of other material. The calcining temp. for production of clinker is 1300-1400 deg.C and the controlled clinker liter wieght is 750 plus or minus 100g/liter. When the invented product is used for making glass fibre-reinforced concrete product, it features non-shrink, small free-expansion, short setting time, free from after expansion and low alkali, and when the invented product is used for making GRC product, the retention rate of glass fibre strength can be stabilized to 80-90%, and its service life can be prolonged.

Degradation degree determination method and device, program, equipment and medium

The invention belongs to the technical field of concrete sleeper quality evaluation, and particularly relates to a deterioration degree determination method, device, program, equipment and medium. The ultrasonic data fed back by the surface of the concrete sleeper are obtained; determining an actual surface wave frequency dispersion curve of the concrete sleeper according to the ultrasonic data; establishing a theoretical solution model of the concrete sleeper surface wave frequency dispersion curve; determining the actual shear wave velocity of the concrete sleeper according to the actual surface wave scattering curve and the theoretical solution model; and determining the deterioration degree of the concrete sleeper according to the actual shear wave velocity. Therefore, the deterioration degree of the concrete sleeper can be evaluated more conveniently and accurately, and the comfort and safety of train driving can be better guaranteed.

Medicine for treating nephritis

The invention provides a medicine for curing nephritis, which is composed of raw materials by weight ratio: 30 to 50 percent of Japanese ardisia and 120 to 200 percent of gardenia root, branch and seed, and can be made into any dosage form in pharmacy. The medicine has curative effects on curing acute nephritis and chronic nephritis, has fine curative effect with few side effects and low production cost; thus being applied to ordinary low-income patients.

Special purpose cement for low alkali glass fiber reinforced concrete and clinker producing process