5results about How to "Clear concept" patented technology

The application discloses a kind of soft soil shield water tunnel composite structure internal force simplified calculation method, comprising the following steps: 1) based on national standard specification and the tunnel overburden soil weight of corresponding geological exploration report of engineering is calculated;2) the underlying soil is simplified into several linear grounding springs connected with water tunnel;3) based on the equivalent stiffness theory of composite beam structure, the equivalent bending stiffness and equivalent shear stiffness of shield water tunnel composite structure are calculated;4) shield water tunnel composite structure is simplified into a continuous homogeneous ironwood Xinke beam in longitudinal direction;5) take microelement dx to carry out stress analysis, and the control equation of simplified model of composite structure is obtained;6) the numerical solution of control equation is solved using finite difference method;7) the numerical solution vector is functionally coupled using Fourier series;8) the internal force of any point on shield water tunnel composite structure is solved.

The application discloses a kind of stainless steel hollow sandwich steel pipe concrete guide pipe leg shear bearing capacity calculation method, it is related to the technical field of ocean platform guide pipe leg shear performance, comprising the following steps: the size and material parameters of core concrete and inner and outer steel tube are determined;Shear bearing capacity considering the influence of the effect of hoop is calculated;Shear bearing capacity considering the influence of shear span ratio is calculated;Shear bearing capacity considering the influence of axial compression ratio is calculated;The calculation model of stainless steel-concrete-steel hollow sandwich steel pipe concrete guide pipe leg shear bearing capacity is established.The application can accurately predict the stainless steel-concrete-steel hollow sandwich steel pipe concrete guide pipe leg shear bearing capacity, and the expression of calculation formula is only related to cross-section geometric characteristic parameter and component physical characteristic parameter, with clear concept, simple form, strong adaptability characteristics.

The application relates to a method for calculating the speed attenuation coefficient of personnel walking in any direction when a ship body is inclined, and provides a method for calculating the speed attenuation coefficient of personnel walking in any direction when a ship body is inclined (heeled or tilted), which is reliable in theory, clear in concept and easy to realize, and can be used for calculating the walking speed of personnel on a ship (especially a passenger ship) in any direction when the ship body is inclined, so as to provide reasonable basic data for calculating the escape and evacuation time of personnel on the ship, reasonably planning the evacuation path and escape exit of personnel on the ship.

The application discloses a reinforced concrete column and a method for improving the bearing reliability robustness of the reinforced concrete column, and the reinforced concrete column comprises a concrete base body and a steel reinforcement cage arranged in the concrete base body; a compression-weakening connecting device arranged in the concrete base body is arranged in the longitudinal direction; the compression-weakening connecting device comprises upper end reinforcement, lower end reinforcement, middle reinforcement with a pier head at both ends, an upper connector, a lower connector and an isolation layer wrapped outside the middle pier head reinforcement; the two pier head ends of the middle reinforcement are respectively located in the upper connector and the lower connector and can slide in the upper connector and the lower connector. The application effectively solves the problem that the traditional reinforced concrete column axial force-bending moment correlation curve has a positive correlation section, thereby causing poor bearing reliability robustness, improves the bearing reliability robustness of the reinforced concrete column, and is suitable for concrete structure columns with significant eccentricity variation.

The invention discloses an ecological environment zoned pollution and carbon reduction management and control method based on a carbon-pollution cooperative pressure index, and the method comprises the following steps: S1, constructing a carbon-pollution integrated emission grid, and calculating the carbon emission, pollutant emission and environmental bearing capacity load coefficient of each grid; s2, calculating a carbon-pollution cooperative pressure index of each grid according to the carbon emission, the pollutant emission and the environmental bearing capacity load coefficient; and S3, dividing management and control areas according to the carbon-pollution cooperative pressure index, and taking different management and control measures for different levels of management and control areas. According to the method, the complex environmental system pressure can be quantified into a comprehensive index, so that objective and scientific conversion from multi-source data to an accurate management and control strategy is realized, and technical support is provided for ecological environment partitioned pollution and carbon reduction management and control.