18 results about "High arches" patented technology

The invention discloses a high arch dam global deformation analysis method and system fusing InSAR and measuring point data, particularly relates to the technical field of radar interference deformation monitoring, and is used for solving the problem of inaccurate shielding failure compensation. According to the method, data stability is guaranteed by obtaining InSAR image data and extracting sight line direction displacement in combination with coherence indexes, a key measuring point deformation sequence is collected, an InSAR result is calibrated based on stable reference points, data consistency is improved, a projection correction coefficient is constructed by using a dam body three-dimensional structure model, the sight line displacement is inversely solved into structural normal displacement, and the accuracy of the dam body three-dimensional structure model is improved. Obtaining an initial deformation value of the real structure meaning; according to the method, a spatial coupling map of measuring points and InSAR pixels is constructed for a shielding failure area, deformation compensation of the failure area is completed based on an edge weight, finally the deformation compensation result is remapped to a three-dimensional structure model, measuring point data restoration is performed on a high arch dam, and structural plane-level deformation visualization and trend analysis are realized more quickly and more accurately.

The invention provides a high arch dam abutment anti-sliding stability analysis and evaluation method, which comprises the following steps of: respectively carrying out adit exploration on left and right banks, and analyzing slowly-inclined and steep-inclined structural surfaces to obtain a possible block sliding combination; three-dimensional software is adopted for conducting three-dimensional modeling on the terrain of the dam site area, typical structural planes of the left bank and the right bank of the dam foundation are built into surface domains according to structural plane coordinate information obtained through exploration, and the surface domains extend to a slope table; finite element analysis is conducted through three-dimensional modeling, and multi-factor comprehensive analysis and evaluation are conducted on the anti-sliding stability of the blocks after excavation of the left bank side slope and the right bank side slope of the arch dam. According to the method, adit exploration is carried out on the two banks of the arch dam, obtained data are substituted into three-dimensional software to carry out three-dimensional modeling on the geological conditions of the two banks of the arch dam, finite element calculation is carried out according to three-dimensional modeling, and the anti-sliding stability of the corresponding position of the dam abutment of the arch dam is comprehensively analyzed and evaluated from the angle of multiple factors. Therefore, a theoretical basis is provided for design and implementation of anti-sliding measure schemes of the two banks during arch dam construction.

This invention provides a method and apparatus for determining the full-age hydration heat curve of high arch dam concrete, relating to the field of data processing technology. The method includes: inverting the hydration heat after arch closure based on monitoring data of similar high arch dam projects to obtain the post-arch hydration heat curve of the high arch dam concrete; determining the medium-to-long-term hydration heat curve of the high arch dam concrete based on the post-arch hydration heat curve; using the hydration heat curve of the high arch dam concrete determined by hydration heat tests as the early-age hydration heat curve of the high arch dam concrete; and determining the full-age hydration heat curve of the high arch dam concrete based on the medium-to-long-term hydration heat curve and the early-age hydration heat curve. The apparatus performs the above method. The method and apparatus provided by this invention can solve the problem of insufficient estimation of medium-to-long-term hydration heat and improve the accuracy of the full-age hydration heat curve.

The invention provides a high arch dam earthquake vulnerability analysis method and system based on an extreme gradient lifting tree theory, and the method comprises the steps: obtaining a plurality of pieces of earthquake vibration data meeting the feature requirements of a high arch dam site, and constructing an engineering demand parameter set and an earthquake vibration intensity parameter set; constructing a high arch dam probability earthquake demand model based on an extreme gradient lifting tree model, and fitting a non-linear relationship between engineering demand parameters and earthquake intensity parameters; fitting a change curve of the engineering demand parameters with respect to the acceleration response spectrum value in the first-order natural vibration period based on a scalar model, and extracting boundary values divided by different anti-seismic performance levels; and on the basis of an engineering demand parameter logarithmic normal distribution hypothesis, using the fitted high arch dam probability earthquake demand model to construct an earth surface vulnerability function, and inputting an earth vibration strength parameter and boundary values of different anti-seismic performance levels for calculation to obtain earthquake vulnerability probabilities of the high arch dam under the different anti-seismic performance levels.

This invention discloses a fractional-order numerical analysis method and module for the deformation behavior of high arch dams, relating to the fields of service behavior analysis and computational mechanics technology for hydraulic structures. By constructing fractional-order characterization methods for decaying rheology, steady-state rheology, and accelerated rheology under three-dimensional stress states, fractional-order rheological mechanical element models of the dam body and foundation of high arch dams are established; using the incremental finite element method, based on t n The stress, viscoelastic strain, viscoplastic strain, and deformation at time t are calculated using the predifference formula. n The stress increment, viscoelastic strain increment, viscoplastic strain increment, and deformation increment within the time period are used to derive t. n+1 By repeatedly calculating the stress, strain, and deformation at specific moments, the stress, strain, and deformation of the high arch dam within the analysis period are obtained. This invention not only objectively characterizes the nonlinear rheological effects of the dam body and foundation of the high arch dam, but also achieves scientific numerical quantitative analysis of deformation behavior, providing technical support for safety monitoring and early warning of potential hazards in in-service high arch dams, and has broad application prospects and market potential.

The invention relates to the field of bridge engineering, in particular to a method for designing a high-low arch bridge, which comprises the following steps of: initially planning the geometric dimension of the arch bridge according to topographic and geological information at an arch seat and the span of the arch bridge, and establishing a macroscopic finite element model of the arch bridge; calculating to obtain upper chord main pipe internal force and lower chord main pipe internal force of a high arch rib, upper chord main pipe internal force and lower chord main pipe internal force of a low arch rib, internal force of a cross brace, base internal force of a high arch rib side skewback and base internal force of a low arch rib side skewback, and then verifying whether the bearing capacity of the arch bridge meets the requirement to adjust the initial size. The influence of the slope terrain on the overall arrangement of the arch bridge is fully considered, the arch rib size is adjusted, the asymmetric high-low arch bridge is designed, it is not needed to arrange a high skewback on a side slope at the low ground elevation position, checking calculation of the corresponding bearing capacity is conducted after internal force is calculated, the size of the skewback is reduced, and meanwhile the construction cost is reduced. Complex load effects are separated and gradually considered, so that the bearing capacity of the arch bridge meets the requirements, the structure stress is safer, and the design is more reasonable.

The invention discloses a high arch dam deformation safety analysis method and system driven by monitoring point group monitoring data, and belongs to the technical field of hydraulic structure safety intelligent monitoring. In the principal component space, constructing an SPE statistic and a CSPE statistic, and providing a gross error diagnosis criterion in combination with hypothesis testing; and constructing a gross error and missing component estimation method by applying a co-integration theory, an improved whale algorithm and an expanded Dybase-Fowler test. Constructing a deformation feature similar measuring point group division method by means of Euclidean distance, average connection distance and hierarchical clustering; establishing a measuring point group deformation behavior monitoring model, and optimizing and determining model parameters in combination with an improved whale algorithm; and comprehensively considering the deviation elastic state degree of the deformation principal component and the combined control limit of the deformation principal component, and proposing a measurement point group deformation safety evaluation criterion. The method can effectively represent the structural characteristics and the operation state of the high arch dam, is beneficial to actual operation, provides technical support for engineering safety monitoring, energy improvement and life prolonging, and has wide application prospects.

The utility model relates to a high-arch carbon fiber foot plate which comprises an upper foot plate, a lower foot plate and a middle main foot plate which are made of carbon fiber materials. One end of the upper foot plate is connected with the middle main foot plate through a fastener; the middle main foot plate is connected with the lower foot plate through a connecting piece; wherein the upper foot plate is positioned above the middle main foot plate; the middle main foot plate is positioned above the lower foot plate; the utility model has the advantages that the lower foot plate adopts a high arch design, so that better energy storage performance can be realized, a user can walk more easily, and higher exercise intensity can be realized; meanwhile, the high arch is combined with the long toe separating structure, so that better road surface adaptability is achieved, and the residual limb of a user can be better protected; due to the impact protection structure of plantar flexion and dorsal flexion, the product has longer service life.

This invention provides a method and apparatus for determining the safety factor of an arch dam. The method includes: constructing a finite element model based on the geometric structure of the target arch dam; assigning values ​​to the finite element model based on design condition parameters to obtain a design condition model; assigning values ​​to the finite element model based on time-dependent deformation condition parameters to obtain a time-dependent deformation condition model; performing hydraulic overload analysis on both the design condition model and the time-dependent deformation condition model to determine a first overload safety factor and a second overload safety factor; and determining the safety factor of the target arch dam based on the first and second overload safety factors. The analysis, based on a dual-model comparative analysis framework of ideal design state and long-term operating state, can quantitatively reveal the impact of deformation on the working behavior of the arch dam, effectively solving the problem that a single-dimensional safety factor assessment cannot reflect the safety margin decay caused by time-dependent deformation, thus significantly improving the comprehensiveness and accuracy of determining the safety factor of high arch dams.

The invention discloses a non-linear correction method for a similar material formula of an extra-high arch dam valley amplitude deformation physical model. The non-linear correction method comprises the steps that physical and mechanical parameters of a rock mass layer are determined; according to a generalized two-stage scaling law, obtaining a mechanical parameter theoretical calculation value of a physical model similar material under a supergravity test condition; designing an orthogonal test of the similar material according to the theoretical calculation value of the mechanical parameters to obtain a test result; determining an optimal formula of an orthogonal test according to a test result; based on the similar material mechanical parameters of the optimal formula, errors of the material parameters are calculated through a nonlinear correction method, and the optimal solution of the similar material mechanical parameters is obtained through correction according to the errors; and matching the formula of the similar material closest to the optimal solution as a corrected formula of the similar material. According to the method, the generalized similarity law related to super-gravity, especially the valley amplitude deformation of an extra-high arch dam, can be corrected, and the corrected similarity relationship can reflect a prototype more accurately through a super-gravity physical model.

This invention discloses a construction method for converting a three-arch tunnel to a single-bore double-track tunnel. The method includes the following steps: S1, constructing the three-arch tunnel; S2, constructing a transition section for the conversion from the three-arch tunnel to the single-bore double-track tunnel, the top of which extends obliquely upward from the cross-section of the three-arch tunnel and the single-bore double-track tunnel to the highest arch of the single-bore double-track tunnel; S3, constructing the transition section in the reverse direction from the transition section towards the three-arch tunnel. The upward-sloping top of the transition section ensures a smooth transition between the two different tunnel cross-sections during construction, avoiding uneven local stress and reducing construction risks. Furthermore, through the reasonable design of the transition section, only the initial support of the upper pilot tunnel needs to be changed along the top of the transition section, making construction easy to operate. Finally, during the reverse construction process, only the initial support of the upper pilot tunnel needs to be replaced, making the construction simple, economical, and safe.

This invention discloses a method for optimizing high arch dam construction schemes based on prospect theory. First, it comprehensively considers the development characteristics of construction indicators at each stage and proposes a dynamic reference point evolution method to achieve multi-stage, multi-attribute, and continuous random variable optimization of high arch dam construction schemes. Then, by establishing the weights of indicators and time weights at each stage, and finally based on the prospect stochastic criterion, it achieves intelligent optimization of the high arch dam construction scheme, effectively improving the scientific nature of decision-making. Compared with existing technologies, this invention comprehensively considers the development characteristics of construction indicators at each stage, achieving multi-stage, multi-attribute, and continuous random variable optimization of high arch dam construction schemes; it realizes intelligent optimization of high arch dam construction schemes, effectively improving the scientific nature of decision-making and solving the problem of low accuracy in current construction scheme optimization results.

The invention discloses a high arch dam later-stage temperature rise cause analysis and prediction method, system and device and a medium. The method comprises the steps of obtaining high arch dam later-stage temperature rise temporal and spatial change characteristics; based on the high arch dam later-stage temperature rise time-space change characteristics, the influence of the environment temperature on the high arch dam later-stage temperature rise is analyzed through a first analysis method, and an environment temperature influence analysis result is obtained; based on the environmental temperature influence analysis result, analyzing the influence of the concrete hydration heat reaction on the later temperature rise of the high arch dam by utilizing a second analysis method to obtain a concrete hydration heat reaction influence analysis result; according to the environment temperature influence analysis result and the concrete hydration heat reaction influence analysis result, constructing a high arch dam later-stage temperature rise precision numerical model; and according to the high arch dam later-stage temperature rise precision numerical model, the high arch dam later-stage temperature change is predicted, and the safety of the whole life cycle of the dam is improved.

1. Name of the product in this design: High arch and low arch insole. 2. Purpose of this design: To evenly distribute the force on the foot and reduce foot fatigue. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention discloses an orthotic insole and slipper customized through the 3D printing technology, and belongs to the technical field of orthotic instruments.The orthotic insole comprises an insole body, the insole body comprises a forefoot part and a heel part, an arch supporting part is arranged on one side of the middle of the upper end of the insole body, and an orthotic assembly is arranged at the lower end of the insole body; the correcting assembly comprises a height-supplementing gasket, the height-supplementing gasket is arranged on one side of the lower end of the insole body and located at the lower end of the heel part, the foot arch supporting part is designed according to the accurate shape of the foot arch of the human body and can be perfectly attached to the foot arch of each person, and therefore the very stable and effective supporting effect is achieved; according to the design, the complexity and individual difference of the foot arch of the human body are considered, it is ensured that the supporting part can adapt to the foot arch shapes of different people, and both high arch feet and flat feet can be properly supported.

The utility model relates to medical instruments. The 3D-printed high-arch foot repairing insole comprises an insole body, a supporting groove is formed in the position, opposite to the arch of a patient, of the insole body, and an arch supporting block is installed in the supporting groove; a clamping edge with a semicircular cross section is arranged at the bottom of the middle section of the side, close to the outside of the foot, of the arch supporting block, an arc-shaped groove is formed in the position, opposite to the clamping edge, in the mounting groove, and the clamping edge is located in the arc-shaped groove; the bottom face of the foot arch supporting block is an inclined face, a rubber wedge block with the cross section in a right trapezoid shape is further arranged between the bottom face of the foot arch supporting block and the groove bottom face of the supporting groove, and the inclined face of the rubber wedge block faces upwards and is opposite to the foot arch supporting block. According to the utility model, the supporting height and angle of the arch supporting part can be conveniently and quickly adjusted to a certain extent so as to meet the supporting requirements of different rehabilitation stages.

The invention discloses a deformation field compensation method and system for a concrete high arch dam under monitoring point deficiency, particularly relates to the technical field of structural deformation monitoring, and is used for solving the problem of low monitoring point deficiency compensation precision. According to the method, a measuring point coupling relation graph fusing spatial adjacency and historical response correlation is constructed, reference measuring points strongly associated with missing measuring points are screened, an input data set with a continuous time sequence is constructed, a deformation evolution mode is extracted in combination with normalization and a sliding window, and a recurrent neural network compensation model is input. Dynamic modeling and predictive compensation of deformation response of missing measuring points are achieved, compensation results are merged with original data after being subjected to average fusion and reverse normalization processing, a three-dimensional deformation field of the structure is reconstructed, high-precision compensation of missing measuring areas is achieved, and therefore data integrity and monitoring continuity are effectively improved, and the monitoring accuracy is improved. And the intelligent level and the early warning capability of structural health monitoring of the concrete high arch dam are enhanced.