35results about How to "Adapt to engineering needs" patented technology

The invention discloses a method of calculating the maximum scour depth of a rear part of a debris flow drainage canal transverse sill and applications. The calculation method comprises steps: a designed longitudinal slope for the drainage canal, a designed distance between transverse sills, a designed height of the transverse sill over a gully bed, and a designed width for the drainage canal are firstly determined; a debris flow body weight, a gully bed sediment weight, a debris flow viscosity coefficient and a debris flow yield stress are then determined; a debris flow depth and a debris flow velocity are then determined; and finally, according to the maximum scour depth calculation formula for the gully bed at the rear part of the transverse sill, the maximum scour depth of the gully bed at the rear part of the soft foundation energy dissipative-type debris flow drainage canal transverse sill is determined. The method comprehensively considers the gully bed condition and debris flow features, rear transverse sill scour features are also combined, the maximum scour depth calculation formula for the rear part of the drainage canal transverse sill is obtained through theoretical derivation, the maximum scour depth of the gully bed at the rear part of the transverse sill in different conditions can be reasonably determined, a scientific basis is provided for the debris flow disaster prevention engineering design, and the calculation method is simple and convenient and can meet engineering needs.

The invention discloses a fiber bragg grating displacement sensor capable of conducting multi-point measurement. The fiber bragg grating displacement sensor comprises a sensor outer shell and an anchor jaw structure. Two symmetrically-arranged supports are arranged in the sensor outer shell, the outer sides of the supports are respectively provided with a pressing guide column, the inner sides of the supports are provided with pressing springs respectively, the supports are further provided with precision guide rails and precision sliding rails, the precision guide rails are in clearance fit with the precision sliding rails, a spring pulling rod is further arranged below the supports, and extension springs are fixed on the upper portions of the precision guide rails and the upper portion of the spring pulling rod and used for tensioning the precision sliding rails to enable the precision sliding rails to perform reciprocated sliding in the precision guide rails. According to the actual use requirement, the flexibility and the measuring range of the sensor can be selected, the slope heights of the precision guide rails can be changed to adjust the flexibility of the sensor, and the slope lengths of the precision guide rails can be changed to adjust the measuring range.

The invention discloses a full-flexible hinge micro-displacement amplification mechanism, and belongs to the field of the flexible micro-nano. A piezoelectric ceramic is fixed in the middle of a rightbase of a support frame, and is connected with the middle part of a first lever of an amplification mechanism; a top end of the first lever is connected with the right base, and the lower side of thefirst lever is connected with the lower side of a second lever; a bottom end of the second lever is connected with a base of the support frame, the upper side of the second lever is connected with the lower side of a third lever, the bottom end of the third lever is connected with a middle base of the support frame, the top end of the third lever is connected with the bottom end of a right displacement conduction rod, and the right displacement conduction rod top end is connected with the bottom of an output platform. The full-flexible hinge micro-displacement amplification mechanism disclosed by the invention is a symmetric structure, a left side structure and a right side structure are completely same; the connection between the levers is the arc flexible hinge connection. The amplification mechanism can provide enough driving force for the whole mechanism, the structure is more compact, the entire rigidity is greater, the movement is stable, free from lubrication, zero in lagging,high in precision, and free from assembling error, capable of basically eliminating the coupling error and more suitable for the engineering demand.

The invention discloses a method for measuring and calculating intervals between rib sills of a soft foundation energy dissipation type debris flow drainage groove and application. According to the method for measuring and calculating the intervals between the rib sills, firstly, the longitudinal gradient of the drainage groove is determined according to measurement and calculation of a large scale topographical map or field investigation and actual measurement; then, the weight degree of debris flow is determined according to calculation of a debris flow weight degree calculation formula or actual sampling and actual measurement; finally, the intervals between the rib sills of the soft foundation energy dissipation type debris flow drainage groove are determined according to the measurement and calculation formula of the intervals between the rib sills. According to the method, the three major factors of the longitudinal gradient of the drainage groove, the weight degree of the debris flow and the buried depth of the rib sills of the drainage groove are comprehensively considered, the measurement and calculation formula of the intervals between the rib sills of the soft foundation energy dissipation type debris flow drainage groove is obtained by means of the arrangement characteristic of the rib sills of the soft foundation energy dissipation type debris flow drainage groove and data fitting performed according to an indoor simulation test result, the intervals between the rib sills under different conditions can be reasonably determined, a scientific basis is provided for designing debris flow disaster prevention and treatment engineering, and the measurement and calculation method makes calculation easy and convenient and meets the requirements of the engineering.

The invention discloses a calculation method for foundation pit exterior dewatering caused by precipitation in a confined water stratum foundation pit. The calculation method comprises: S1, conductingfoundation pit interior precipitation model test design; S2, applying a fitting method to the precipitation curve to obtain a curve fitting formula of precipitation outside the foundation pit causedby precipitation in the foundation pit of the confined water stratum, the fitting formula being; S3, calculating the settlement amount of the confined water stratum by adopting a first formula; wherein the first formula is shown in the specification. A Theoretical basis and a basis are provided for research on foundation pit continuous wall deformation caused by incomplete well dewatering in the foundation pit of the confined water stratum, and meanwhile important reference is provided for design and construction of foundation pit engineering dewatering.

The invention discloses an advanced three-dimensional electrical resistivity cross-hole computed tomography (CT) solitary stone detection system carried by a shield tunneling machine and a detection method. The system comprises an advanced drilling device capable of drilling at least four drill holes in the rock surface. The multiple drill holes form a three-dimensional detection space. The advanced drilling device comprises a drilling machine. The bottom of the drilling machine is movably fixed to a rail on the inner circumference of a shield. A drill bit of the drilling machine penetrates through an advanced grouting hole of the shield. The system further comprises a detection electrode coupling device which stretches into the drill holes, is provided with a plurality of electrodes, and is capable of releasing electrolytes to the electrodes. The detection electrode coupling device is connected with a host machine used for applying a three-dimensional space electric field through a cable. The advanced three-dimensional electrical resistivity cross-hole CT solitary stone detection system carried by the shield tunneling machine and the detection method have the beneficial effects that the defects that holes cannot be drilled in a cutter head of the shield tunneling machine, or a drilling device cannot be installed on a tunnel face are effectively overcome; the advanced drilling device is installed in the shield of the shield tunneling machine, and advanced drilling is achieved through the advanced grouting hole in the shield of the shield tunneling machine; and difficulty in the prior art is overcome, and simplicity and convenience are achieved.

The invention provides a method for determining the dynamic coefficient of a cast-in-place pile frame type roadbed structure. The method has the advantages that the dynamic coefficient of the cast-in-place pile frame type roadbed structure can be scientifically and reasonably determined, and the requirement of the engineering design and construction can be met. The method comprises the following steps of (1) determining the thickness h of a filling body, and determining the span L of a trough type bridge plate in the longitudinal direction; and (2) and determining the dynamic coefficient of the cast-in-place pile frame type roadbed structure through the following formula shown in the description. The formula is shown in the description.

The invention discloses a screening slag loading building, comprising a vibration vibrating screen, an aggregate box, a slag collecting box, a first slag separator and a second slag separator; the aggregate outlet of the vibration vibrating screen is connected with the aggregate box; a waste slag outlet of the vibration vibrating screen is connected with the charging port of the first slag separator; the first slag separator comprises a first slag separation drum connected with the slag collecting box and a second slag separation drum connected with the charging port of the second slag separator; the second slag separator comprises a third slag separation drum and a fourth slag separation drum which are used for loading materials to a transfer vehicle; a switching device for controlling the flow direction of waste slag is arranged in each of the first slag separator and the second slag separator. The screening slag loading building effectively realizes the seamless jointing for transferring the waste slag and aggregate, so the transferring efficiency of the waste slag and the aggregate is improved, and the aggregate in the slag material can be used and taken on site and used as the sand aggregate for lining a channel.

The invention discloses an inertial capacity device with adjustable inertial capacity. The inertial capacity device comprises a flywheel, wherein the flywheel is connected with a driving device through a first rotating shaft; the driving device is fixedly arranged on the inner side of a box body; a main pipe and side pipes which are perpendicular to each other and are communicated are arranged onone side, different from the first rotating shaft, of the flywheel; the main pipe is coaxial with the first rotating shaft and is internally provided with a main pipe piston; the main pipe piston is connected with a push-pull rod through a ball bearing; each side pipe is internally provided with a side pipe piston; protrusions are arranged at two ends of a short tube of each side pipe; an area enclosed by the main pipe piston, the main pipe, the side pipe pistons and the side pipes is filled with liquid; the liquid moves when only pushing the main pipe piston to move. The inertial capacity disclosed by the invention can be actively and continuously changed and can adapt to project demands under different conditions; the integral device is small in size and is more convenient in actual installation.

The invention discloses a fiber bragg grating pressure sensor capable of achieving positive and negative pressure monitoring and a testing method. The fiber bragg grating pressure sensor comprises a connector, a filter screen, a base, an outer shell, a corrugate pipe, a first fiber bragg grating, a second fiber bragg grating, an optical fiber, an optical cable connector, an armored optical cable, a brace, a flange plate, an outer shell cover and a strain beam, wherein the outer shell cover is used for protecting the optical fiber from a sealing glue sealing part to an optical cable connector part, and the strain beam is used for applying prestress. The fiber bragg grating pressure sensor capable of achieving the positive and negative pressure monitoring and the testing method are suitable for the monitoring of pressure safety of oil and gas pipelines, urban underground gas pipelines, heating power pipelines, water supplying pipelines, oil tank pipelines, oil conveying pipelines and other pipe networks, the potential safety hazards that an electronic sensor is electrified and is unsafe in nature are eliminated, and meanwhile the capacity of phases is also improved greatly; the fiber bragg grating pressure sensor is applied to the aspect of real-time online monitoring of coal and rock mass gas pressure, errors caused by single data monitoring are avoided, the sensitivity and the accuracy of the system are improved, manpower, material resources and time are saved, and meanwhile the danger probably brought by personnel on site can be avoided.

The invention discloses a data processing method based on a self-moving three-dimensional scanning system for rail transit, which includes the following steps: (1) data collection for rail transit: using a self-moving three-dimensional scanning system for rail transit to collect data along the track traffic infrastructure and surrounding environment data to obtain laser data, track profile data, inclination data and mileage data, and transmit the laser data, track profile data, inclination data and mileage data to the host computer; (2) multi-source data pre-processing Processing: the host computer receives the laser data, track profile data, inclination data and mileage data of step (1), and performs multi-source data fusion processing on the multi-source data to generate a three-dimensional point cloud along the measured rail transit and Gray-scale image. The upper computer is used as the core to control the processor to realize one-time data collection and generate a three-dimensional point cloud gray-scale image by fusion of multi-source data. Compared with the traditional measurement method, the data collection efficiency is improved and the security risk of online is reduced. .

The invention discloses a calculation method for debris flow scouring bridge piers, including establishing an erosion rate formula for debris flow scouring bridges: assuming that debris flow is a uniform mixture and in an incompressible state during movement, an empirical parameter ξ is introduced to obtain a revised erosion rate Formula; Numerical calculation is completed according to the physical parameters of the working conditions determined by the debris flow scouring the bridge: the revised erosion rate calculation formula is converted into vector form and discretized in time and space, the physical parameters of the debris flow are determined and assigned, and the finite volume method is used Solve the flux Riemann problem; solve the above discrete equations and calculation formats in the x and y directions, and judge the erosion conditions according to the revised erosion rate formula, thereby completing a calculation cycle; visualize the results to obtain the erosion information : Using computer graphics and image processing technology, the calculation data is converted into graphics or image output, and the conclusion of debris flow scouring bridge piers is obtained.

The invention discloses a fiber bragg grating displacement sensor capable of conducting multi-point measurement. The fiber bragg grating displacement sensor comprises a sensor outer shell and an anchor jaw structure. Two symmetrically-arranged supports are arranged in the sensor outer shell, the outer sides of the supports are respectively provided with a pressing guide column, the inner sides of the supports are provided with pressing springs respectively, the supports are further provided with precision guide rails and precision sliding rails, the precision guide rails are in clearance fit with the precision sliding rails, a spring pulling rod is further arranged below the supports, and extension springs are fixed on the upper portions of the precision guide rails and the upper portion of the spring pulling rod and used for tensioning the precision sliding rails to enable the precision sliding rails to perform reciprocated sliding in the precision guide rails. According to the actual use requirement, the flexibility and the measuring range of the sensor can be selected, the slope heights of the precision guide rails can be changed to adjust the flexibility of the sensor, and the slope lengths of the precision guide rails can be changed to adjust the measuring range.

The invention relates to a variable cross-section pre-stress cant beam and a construction process thereof. The variable cross-section pre-stress cant beam is characterized by comprising a cant beam body, a lower end of the cant beam body is poured and connected to the upper end of a first layer of layer, the central part and the upper end of the cant beam body are poured and connected to a Y-shaped column; an I-shaped stiff steel rib and a pre-stress bellows are arranged in the cant beam body, the stiff steel rib is positioned at the center of the cant beam body, the number of the pre-stress bellows is four and the pre-stress bellows are respectively positioned at four angels of the stiff steel rib, the stiff steel rib is pulled by each pre-stress bellow; the cross section of the cant beam body is varied, width of the connection part of the cant beam body and the first layer of the column, the connection part of the connection part of the cant beam body and a third layer of the column, the connection part of the connection part of the cant beam body and a fourth layer of the column, the connection part of the center part and the cant beam body, the connection part of the cant beam body and the Y-shaped column, and the connection part of the cant beam body and the upper end part keeps consistency, and the thickness is determined according to the angle of the cant beam body, number of picking ear in each layer, tand he first layer of column and the Y-shaped column. The construction process guarantees the convenience of the pulling of the bellows and the pulling quality of pre-stress rib.

Aiming at solving the problems that flow velocity and impact of any point in any section of mud-flow cannot be measured in the prior art, the invention first provides a method for measuring viscous mud-flow internal flow velocity and impact force spatial distributions. The method for measuring flow velocity is based on the viscous mud-flow body Bingham model and the scour-and-fill balance principle; first, setting any section I-I, determining values such as h0, h(x), xa, xd, xb, xc of the section through the trial method; then calculating the flow depth of a mud-flow calculation infinitesimal surface at any point on the section according to formula 1; and finally substituting h into the Bingham-model-based viscous mud-flow flow velocity distribution formula to obtain flow velocity of the point. By means of the method for measuring flow velocity at any position in any section of mud-flow, the method for measuring spatial distribution of viscous mud-flow impact force is further obtained. The calculation result of the method has high accuracy, which can be applied in real design for viscous mud-flow prevention and control engineering. The measurement method is clear in thinking and simple in calculating, which is an improvement of the present prevention and control engineering design method which is based on uniform distribution.

The invention relates to a configuration optimization method for a dual-planetary row power-split hybrid power system, comprising the following steps: generating a configuration library according to clutch constraints and possible connection relationships between components; removing configurations that do not meet the configuration constraints type, establish a general energy management strategy for each configuration; obtain a preliminary optimized configuration library based on the beetle's whisker search algorithm; establish a candidate solution set screening module; obtain each preliminary optimized configuration based on the particle swarm optimization algorithm and the candidate solution set screening module Optimizing the configuration; screening the modules based on the candidate scheme set to obtain the optimal configuration. Compared with the prior art, the present invention fully optimizes the design of all feasible configurations of the double planetary row, and can adapt to the engineering requirements of different user design goals; The comprehensive performance evaluation index is used as the optimization objective function, combined with the particle swarm optimization algorithm to realize the rapid optimization of the best scheme of the configuration comprehensive performance.