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112 results about "Section modulus" patented technology

Section modulus is a geometric property for a given cross-section used in the design of beams or flexural members. Other geometric properties used in design include area for tension and shear, radius of gyration for compression, and moment of inertia and polar moment of inertia for stiffness. Any relationship between these properties is highly dependent on the shape in question. Equations for the section moduli of common shapes are given below. There are two types of section moduli, the elastic section modulus and the plastic section modulus. The section moduli of different profiles can also be found as numerical values for common profiles in tables listing properties of such.

Beam shoe

A beam shoe for attaching a (first) beam end-on to a load-bearing construction, especially to a second beam disposed in the same plane as the beam to be attached and running at right angles thereto, the beam shoe comprising an originally flat, one-piece, strip-like sheet-metal portion or blank, which is shaped to an upwardly open channel-shaped retaining member having a web-like rectangular bottom for bracing the beam to be attached on the beam shoe as well as two web-like, parallel retaining legs, the retaining member embracing, in assembled condition, an end portion of the beam to be attached at the underside and side faces thereof, the legs, which are bent over upwardly from the bottom at right angles and disposed along two opposite borders of the bottom, being provided with through holes for rod-like fasteners such as nails in particular in order to join the beam shoe to the beam to be attached, the inside spacing of the legs therefore being (at least) as large as (and if necessary somewhat larger than) the width of the beam to be attached, wherein a fastening flange provided with through holes for rod-like fasteners such as nails and / or screws is bent over at right angles along that longitudinal border of each retaining leg which faces the load-bearing construction (or if necessary the second beam), the fastening flange being designed to be placed with its outside face remote from the channel-shaped retaining member of the beam shoe on the load-bearing construction / the second beam and to be fastened thereto with rod-like fasteners such as nails and / or screws, and wherein the web-like bottom is reinforced by a (bottom) reinforcing flange or the like in order to increase its section modulus against sagging under relatively large load.
Owner:SIMPSON STRONG TIE

Spent fuel rod storage grillwork for nuclear power plant

The invention discloses a spent fuel rod storage grillwork for a nuclear power plant in the field of nuclear power equipment. The spent fuel rod storage grillwork comprises a lower supporting plate and a grillwork body defined by a plurality of peripheral plates, wherein a plurality of small spent fuel rod storage chambers which are positioned on the top of the lower supporting plate and are regularly hexagonally prismatic steel pipes are arranged in the grillwork body; the small spent fuel rod storage chambers are arranged on the top of the lower supporting plate in a honeycomb manner; a spent fuel rod storage cavity with openings in two ends is formed in the center of each small spent fuel rod storage chamber; a bottom overflowing through hole formed in the lower supporting plate is positioned right under the spent fuel rod storage cavity of each small spent fuel rod storage chamber. The spent fuel rod storage grillwork has the technical effects that the inertia moment, the section modulus and the anti-bending capacity of the single small spent fuel rod storage chamber in the spent fuel rod storage grillwork for the nuclear power plant are improved, and the spent fuel rod storage amount in a unit volume in the spent fuel rod storage grillwork for the nuclear power plant can be increased.
Owner:CHINA NUCLEAR POWER ENG CO LTD

Riverway intersection water flow stagnant area wedge cone and building method and application thereof

The invention discloses a riverway intersection water flow stagnant area wedge cone. According to a building method of the cone, under the main and branch water flow incoming representative flow condition, SMS numerical value simulation software is utilized for calculating a two-dimensional flow velocity field of a main and branch water flow intersection area under the natural terrain condition, flow velocity contour maps at the different water level elevation positions are extracted, contour lines equal to the sediment incipient motion critical flow velocity Uc in the different water level elevation flow velocity contour lines are determined through the sediment incipient motion critical flow velocity Uc, and the contour lines are overlapped to form a wedge cone structure; a connection line of flow velocity contour line intersection points with the main and branch water flow velocity equal to the Uc in the lowest water level process and shoreline intersection points is defined as a y axis, section subdivision is carried out on the stagnant area along the y axis, water levels of the contour lines on the section are extracted to be fitted, the section water levels meet a parabolic equation that z is equal to a ax<2>+bx+c, section modulus a, b and c build a relation with the y axis, and the structural terrain elevation of the wedge cone is obtained. The wedge cone can effectively reduce the jacking effect of the intersection area, the water flow in the intersection area is uniform, and the wedge cone is suitable for the flow rectification engineering of the intersected riverway water flow stagnant area
Owner:SICHUAN UNIV
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