155 results about "Support design" patented technology

The invention relates to the field of tunnel engineering geology and support design, and discloses a weak surrounding rock tunnel deformation risk discrimination method based on shear expansion-shear constitutive, which comprises the following steps: constructing a nonlinear coupling model between a shear expansion angle and shear stress, normal stress and joint parameters, and obtaining the shear expansion angle; establishing a volumetric strain rate discrimination formula; inverting an initial crustal stress tensor field; reconstructing an irregular tunnel boundary; constructing a risk level discrimination model, and outputting a risk level; supporting schemes such as supporting rigidity, anchor rod parameters and spraying layer thickness are matched according to the risk grades; establishing a model to predict a risk trend; a support adjustment suggestion is generated; collecting monitoring data to dynamically correct model parameters; and all the modules are integrated in a deployment system. According to the method, the coupling relation between the shear expansion angle and the shear strength is introduced, the coupling type constitutive discrimination model is established, the risk grading system and the support correction strategy associated with the support response are constructed, and active early warning of the high-risk section and dynamic adjustment of the support rigidity are achieved.

The invention relates to the field of tunnel engineering, in particular to a tunnel multi-physics field coupling simulation and support design method considering construction disturbance, which comprises the following steps of: modeling a disturbance source, collecting disturbance factor information introduced in a tunnel construction process or an external environment, establishing a disturbance source model to represent the spatial position, intensity and evolution characteristics of a disturbance source; constructing a three-dimensional disturbance propagation function; coupling the three-dimensional disturbance propagation function with a multi-physical field model, and introducing disturbance as a source item into a tunnel heat-water-force coupling model; according to the construction method customization mechanism, modeling parameters and solving strategies are adjusted according to the characteristics of different tunnel construction methods, and corresponding disturbance source model parameters, boundary conditions and constitutive relation adjustment coefficients are set according to the different construction methods. The problems that disturbance modeling is rough, a disturbance propagation mechanism is idealized, the disturbance propagation mechanism is disjointed with a multi-physical field model, and a construction method is not included in a disturbance response system are solved.

The invention provides an intelligent support scheme recommendation method based on an artificial intelligence algorithm, which comprises the following steps: acquiring multi-source heterogeneous geological environment parameters of a target engineering site and real-time dynamic monitoring data flow in a construction process, and constructing a dynamically updated three-dimensional geomechanical model through a geology-construction coupling modeling engine. And performing construction process dynamic risk deduction by using the geological risk assessment artificial intelligence model to generate a risk assessment result. Based on the result, intelligent evolution search is executed in a supporting structure parameter space through a multi-objective optimization artificial intelligence model, a plurality of candidate schemes are generated, screening is carried out in combination with engineering constraint conditions, and a feasible candidate scheme set is formed. And performing multi-dimensional utility evaluation and sorting on the candidate schemes by using the support scheme intelligent sorting artificial intelligence model, generating an optimal support scheme recommendation sequence, and realizing online adaptive optimization through a digital twin feedback loop. According to the method, scientificity, safety and economical efficiency of support design can be improved.

The invention provides an underground engineering surrounding rock excavation-support parameter dynamic design method and system, and the method comprises the steps: obtaining the geological features and mechanical parameters of an underground engineering construction region, and building a three-dimensional numerical model according to the geological conditions; performing a numerical simulation experiment according to the three-dimensional numerical model on the basis of an excavation mode and support parameters of the underground engineering construction area, and generating a surrounding rock excavation dynamic response database and a surrounding rock support dynamic response database by taking surrounding rock deformation as an index; an underground engineering excavation scheme design model based on a GA-BP algorithm is constructed, training is conducted through the surrounding rock excavation dynamic response database, and an optimal excavation mode is determined; and constructing an underground engineering support design scheme model based on a PSO-DNN algorithm, and training by using the surrounding rock support dynamic response database to obtain a support scheme under the optimal excavation mode. The dynamic response characteristics of the surrounding rock can be effectively predicted, an excavation support design scheme is optimized, and the safety and economical efficiency of underground engineering are improved.

The invention relates to the technical field of mining engineering and geotechnical engineering support design, and discloses a roadway anchor rod group support parameter intelligent optimization method based on unbalanced force, and the method comprises the steps: building a surrounding rock finite element model, calculating a plastic stress increment through employing a minimum plastic complementary energy principle, and mapping the plastic stress increment into a node unbalanced force vector; an unbalanced force field reflecting reinforcement requirements is constructed, and an initial scheme is generated according to the unbalanced force field. Then, a virtual anchor rod unit is introduced to establish a nonlinear coupling model, an incremental balance equation is solved, and whether the unbalanced force is smaller than a threshold value or not is judged; if so, outputting an optimal parameter; otherwise, a comprehensive objective function containing safety and economy is constructed, new parameters are obtained through searching and decoding by means of the particle swarm algorithm, and the virtual anchor rod unit is re-entered for calculation to form a closed loop until convergence is achieved. According to the method, intelligent optimization is driven through a physical mechanism, the problem that a traditional design lacks a mechanical basis is solved, and accurate optimization of support parameters is achieved.

The invention discloses a water distribution ring pipe flexible supporting method, a flexible supporting device is used, the flexible supporting device comprises a plurality of body supporting feet arranged at the bottom of a water distribution ring pipe body, supporting pieces are arranged below the body supporting feet respectively, and the supporting pieces make contact with the body supporting feet and can slide relative to the body supporting feet. A supporting bottom plate is arranged at the lower end of the supporting piece, and a tensioning assembly is further arranged between the supporting bottom plate and the body supporting feet. The method comprises the steps of segmenting according to transportation limitation, selecting supporting pieces according to weight, constructing a three-dimensional model and carrying out nonlinear finite element calculation, verifying by extracting bearing reaction and deformation, carrying out fine tuning iteration on a standard exceeding area, finally determining the area of a bottom plate, and forming a complete closed loop from pipe joint processing to load control. According to the method, empirical design is converted into accurate control based on data, the problems of large deformation difference and uneven load of all supporting positions of the large water distribution ring pipe can be solved in a targeted mode, and the blank that a traditional method lacks systematic quantification means in large unit supporting design is filled up.

The invention discloses a support design method of a strong support steel frame based on layer critical stiffness, and relates to the technical field of building reinforcement. Comprising the steps of calculating the critical support stiffness of a frame column and drawing a nomogram of the critical support stiffness of the frame column, calculating the critical support stiffness of a shear type support steel frame layer of each floor, calculating the critical support cross-sectional area of the shear type support steel frame of each floor under the action of no horizontal load, and calculating the equivalent support area required for resisting the horizontal load. Calculating the critical support area of each floor frame under the action of a vertical load and a horizontal load; calculating the cross section area of a tension critical support single diagonal rod; and selecting the cross section model of a shear type support. The invention discloses a support design method of a strong support steel frame based on layer critical stiffness, provides design steps of a shear type strong support for the steel frame, and in the method, discloses a calculation formula of the structural layer critical support stiffness of the shear type support steel frame and provides a nomogram convenient for engineering application.

To support design of a deck slab considering a special load according to an individual, concrete setting condition acting on a deck slab in a construction phase of a building.SOLUTION: A method for designing a deck slab 1 includes: acquiring first arithmetic information 112A, second arithmetic information 112B, third arithmetic information 112C, fourth arithmetic information 112D, fifth arithmetic information 112E, sixth arithmetic information 112F, and determination information 112H; calculating, on the basis of the pieces of information, an index indicating cross-sectional performance of the deck slab 1, a uniformly distributed load acting on the deck slab 1, a special load acting on the deck slab 1, an effective width of the deck slab 1, and a load data pair; and calculating the structure of the deck slab 1, and determining whether a result of the calculation is equal to or less than a set reference value.SELECTED DRAWING: Figure 1

The invention provides a dense pre-support structure thin shell mechanical modeling method, and relates to the technical field of tunnel engineering soft stratum pre-support structure mechanical modeling, and the method comprises the steps: calculating the equivalent stiffness of a pipe shed-jet grouting pile composite layer based on a Voigt theory; establishing a continuous thin shell model taking the control equation as a core; constructing a plastic / elastic disturbance partition in front of the tunnel face and a four-section type boundary condition of a supporting structure through a Pasternak foundation model; and solving the constructed continuous thin shell mechanical model through a finite difference method to obtain radial displacement, and completing mechanical modeling of the tunnel engineering soft stratum pre-supporting structure. The continuous thin shell model designed by the invention can provide high-reliability theoretical support for tunnel pre-support design.

The invention relates to the technical field of building construction, and discloses a DPS prefabricated advance inclined pile support construction method which is applied to construction of a supporting system of foundation pit engineering, and the supporting system comprises a vertical enclosure structure arranged along the periphery of a foundation pit. Comprising the following steps: designing a support system and calibrating construction parameters: performing optimization design of the support system through geotechnical engineering data and support design requirements of a target foundation pit, and determining spatial layout parameters and structural parameters of prefabricated advanced inclined piles constructed in a soil body on the outer side of a vertical enclosure structure, according to the method, the prefabricated advance inclined piles are constructed in advance before excavation of the main body earth of the foundation pit, the rigid force transmission nodes and the vertical enclosure structure are utilized to form a composite supporting system, a supporting structure does not need to be arranged in the foundation pit, and therefore the foundation pit can be supported conveniently and rapidly. And the obstruction of the traditional inner support to the working space is eliminated.

The present relates to a device being used in modular building construction comprising at least one flat load support comprising a first main face and a second main face, at least one elongated load support designed for being coupled with said flat load support. The device is characterized in that said flat load support comprises an array of transverse openings extending through the thickness of the flat load support. The flat load support is arranged for fastening said flat load support with said elongated load support at any position corresponding to one of said opening in a reversible manner and to any position between said openings in a reversible manner. Each flat load support comprises reversible lateral connection means and / or reversible transversal connection means for coupling flat load supports in a reversible manner. The flat load support and the elongated load support are arranged for being detachably assembled to provide the modular, reversible, and / or versatile building construction. The invention further relates to a modular construction building based on said device and to a method using said device.

The invention relates to the technical field of bridge construction, in particular to a bridge pier embedded right-angle bracket support design method and system.The method comprises the steps that geological parameters of a bridge construction area are obtained, and the geological parameters are mapped into load reduction coefficients of bridge pier sites; calculating the design load of the right-angle bracket, synchronously generating a parameterized model of the Bailey buckle, and outputting an initial bracket model of the integrated buckle structure; collaborative optimization of a pier column main reinforcement passing path and a Bailey ring buckle space is carried out on the initial bracket model, and an optimized bracket model with a perforated structure is obtained; performing multi-parameter iterative simulation analysis on the optimized bracket model to obtain a plurality of candidate design schemes; and performing multi-target evaluation on the plurality of candidate design schemes to obtain an optimal design scheme. By means of the method, the problems that in the prior art, geological conditions are difficult to quantify, load calculation lacks dynamic correction, and the space of the bracket and the space of the Bailey ring buckle support are difficult to cooperate are effectively solved, and structural stress optimization and construction arrangement integrated design is achieved.

The application discloses a kind of barrier type mudguard support and design method, mainly related to commercial vehicle chassis support design technical field.Main body structure includes pedestal, mudguard mounting support, pivot mechanism, reset spring and fastening kingpin, the mudguard mounting support is rotatably connected on pedestal by pivot mechanism and fastening kingpin, one end of the reset spring is fixed on mudguard mounting support and the other end is detachably connected with pedestal.The beneficial effects of the application are that it can realize contact barrier swing arm, automatic reset support while the reliability of mudguard support, vibration response performance has significant improvement.

The invention discloses a deep surrounding rock anchor rod spacing quantitative determination method based on fracture toughness parameters. The method comprises the following steps: obtaining the fracture toughness and uniaxial compressive strength of rock through an indoor test; determining a uniaxial compression parameter and an elastic modulus of the rock mass by combining a geological strength index GSI, a damage factor D and a Hoek-Brown criterion; calculating a brittleness index B4 by using the fracture toughness of the surrounding rock, the uniaxial compressive parameter of the rock mass and the elastic modulus; and based on the brittleness index B4, the rock mass elasticity modulus, the engineering burial depth and the rock mass volume weight, a quantitative calculation formula of the anchor rod spacing is established, an empirical coefficient is solved in combination with the spacing range of the corresponding surrounding rock grade in the specification, and finally quantitative determination of the anchor rod spacing is achieved. The method overcomes the defect that quantitative basis is lacked in spacing adjustment in existing specifications, and is particularly suitable for anchor rod support design for controlling brittle failure of surrounding rocks under the deep high-stress condition.

The invention is applicable to the technical field of air scrapers, and provides a rotary bottom support air scraper and a control system, the rotary bottom support air scraper comprises racks, a scraper body, a sealing frame assembly and a groove body, the racks are mounted at two ends of the scraper body, the racks at the two ends are in a mirror image relationship, the sealing frame assembly is mounted on the racks at the two ends, and shaft heads at the two ends of the scraper body are provided with sliding bearing seats and handles. According to the scheme, the sliding bearing seat and the handle are installed on the shaft heads at the two ends of the scraper body, the handle and the scraper body synchronously rotate through the spline, a traditional suspension support design is abandoned, the position of the scraper body can be directly adjusted through the handle during overhauling, and a fixing structure does not need to be detached; the blade is fixed on the scraper body through the screw, so that the blade is convenient to disassemble and assemble when being replaced, the shutdown maintenance time is greatly reduced, and the labor intensity of maintenance personnel is reduced; the axial sealing piece on the groove body is fixed through the pressing plate, and one end of the axial sealing piece is in close contact with the bottom of the scraper body; double sealing can prevent slurry from entering equipment gaps.

The utility model discloses a support-free detachable fixed template application structure applied to an assembly type structural system, which comprises a prefabricated truss reinforced concrete lower chord member, a floor slab prefabricated layer, more than one group of connecting supports and through fixing bolts, the connecting supports are arranged on the two sides of the prefabricated truss reinforced concrete lower chord side by side, a space used for pouring the truss reinforced concrete upper chord is formed between the opposite connecting supports, the connecting supports are installed on the prefabricated truss reinforced concrete lower chord through oppositely-penetrating fixing bolts, and the floor slab prefabricated layer is connected to the upper portions of the connecting supports in a lap joint mode. By the adoption of the method, a part of or even all scaffolds can be omitted, and the detachable standard connecting support designed in the utility model can be used as a temporary support of a main beam cast-in-place part side mold and a floor slab at the same time, and is fixed on a main beam prefabricated part through a split bolt; and the split fixing bolts in the cast-in-place height range can be accurately positioned according to the width requirement and support is formed.

The invention discloses a tunnel surface supporting structure system design method, which can quantitatively and accurately determine design parameters of a surface supporting structure system, and form targeted supporting design according to field practice instead of test or experience design for determination. Comprising the following steps: accurately acquiring engineering environment parameters of a tunnel site area, such as physical parameters of surrounding rock, a stress field and engineering characteristics, through data collection and testing; a tunnel deformation control threshold value [delta] is reasonably determined according to the engineering environment and the like, and on this basis, the ring stiffness requirement [S] of a surface layer supporting structure is calculated through a theoretical formula; different design parameters of the surface supporting structure correspond to ring stiffness supply [s] values, and on the basis that the ring stiffness requirement [S] is determined, the matched design parameters, with the ring stiffness supply [s] not smaller than [S], of the surface supporting structure are selected.

The invention relates to an optimization method for temporary consolidation of a hybrid beam cable-stayed bridge. The optimization method comprises the following steps that S1, support design and stress analysis of a side span prestressed concrete main beam cast-in-place section are determined; construction stage division of a side span prestressed concrete main beam cast-in-place section is determined; bridge site environment parameters are determined; determining action effect parameters corresponding to the bridge site environment parameters; s2, determining the overall arrangement of the temporary consolidation support; s3, calculating the equivalent spring stiffness of the main beam support system; s4, establishing a girder-support cooperative calculation finite element model; s5, calculating the design shearing force of the pier beam temporary consolidation support; s6, structural design of a pier beam temporary consolidation support is conducted; s7, unbalanced horizontal force generated by tensioning of the stay cable is calculated; s8, calculating the design shearing force of the temporary consolidation support of the tower beam; and S9, structural design of the temporary consolidation support of the tower beam is carried out. According to the method, various load effects borne by the temporary consolidation support can be accurately calculated.

The utility model discloses a rotating mechanism of a support arm and electronic equipment, and relates to the technical field of support design, the rotating mechanism comprises a bottom plate and a rotating disc, the bottom plate is provided with a fixedly installed toothed plate; the turntable is pivotally connected to the bottom plate, a driving assembly and a support arm are arranged on the turntable, the driving assembly comprises a motor, a transmission wheel set and an output wheel, the output wheel is meshed with the toothed plate, and the motor can drive the transmission wheel set to rotate so as to drive the output wheel to rotate, so that the turntable and the support arm rotate relative to the bottom plate. The transmission wheel set is provided with a plurality of pairs of speed reduction wheel sets which are meshed with one another, so that the large speed reduction ratio is achieved, the angle adjusted by single-time starting of the motor can be reduced, the flexible fine adjustment function is achieved, and the use experience is improved.

This invention discloses a method for determining the loosening load of the bearing arch in mega-span tunnels based on plastic zone parameters, relating to the field of geotechnical engineering and underground engineering support design technology. The method includes the following steps: inputting tunnel and support parameters; obtaining the height of the plastic zone at the arch crown through numerical simulation; calculating the equivalent thickness of the bearing arch formed by the system anchors; determining the equivalent loosening load height; calculating the vertical loosening pressure; determining the lateral pressure coefficient based on the surrounding rock strength index; calculating the non-uniformly distributed horizontal loosening pressure; and cyclically outputting the verified load through load displacement verification. This invention directly incorporates the plastic zone development state into the load calculation and establishes a self-correction mechanism, achieving refined and dynamic determination of the loosening load, thus improving the safety and economy of mega-span tunnel support design.

The application discloses a 3D printing method and device for a flange, which comprises the following steps: receiving data of a first part component, and generating the first part component; generating a first solid support based on the first part component; merging the first part component and the first solid support, and generating a non-solid support with the first solid support as a part outer wall; segmenting the first solid support to obtain an upper solid support and a lower solid support, merging the upper solid support with the first part component to obtain a second part component; performing a hollowing operation on the lower solid support to obtain a hollowed lower solid support, and merging the hollowed lower solid support with the first solid support to obtain a second solid support; and performing a slicing operation on the second part component, the second solid support and the non-solid support to print a corresponding part. The support design difficulty can be reduced, the support usage can be reduced, and the printing efficiency can be improved.

This invention relates to the field of foundation pit support design technology, and provides a foundation pit support design method and system based on digital twins. The method includes: establishing a digital twin related to the foundation pit and support; constructing a corresponding change curve from the foundation pit excavation data; substituting the curve into the digital twin to predict the mechanical parameters of the foundation pit sidewall at the unexcavated depth, thereby obtaining second soil layer change prediction data; judging the future support requirements changes at various points in the foundation pit based on the second soil layer change prediction data and real-time foundation pit support data, and adaptively reinforcing the foundation pit support using coordinates, thereby reducing foundation pit support costs and improving the efficiency of excavation-as-you-go support.

The application relates to a rock-soil slope supporting structure and a construction method, and relates to the technical field of rock-soil slope supporting design.The rock-soil slope supporting structure comprises anti-slide piles, anchor cables and elastic connecting assemblies, a plurality of anti-slide piles are arranged along the length direction of the slope, the lower ends of the anti-slide piles are embedded in the slope toe of the rock-soil slope, the anchor cables are provided with a plurality of roots, the lower ends of the anchor cables are embedded in the rock-soil surface, the upper ends of the anti-slide piles are fixedly connected with the upper ends of the anchor cables, the elastic connecting assemblies are provided with a plurality of groups, the elastic connecting assemblies are uniformly arranged between any two adjacent anti-slide piles, and the two ends of the elastic connecting assemblies are respectively connected with the sides of the two adjacent anti-slide piles away from the rock-soil slope.The application can reduce the working pressure of the anchor cables under the premise of ensuring the stability of the anti-slide piles, so as to prolong the service life and improve the safety of the anchor cables.

To support design change of an assembly accompanied by replacement of components.SOLUTION: A component information acquisition unit 111 acquires first component model information representing a three-dimensional model of a first component or first component drawing information representing a two-dimensional drawing of the first component. An assembly information acquisition unit 112 acquires first assembly model information representing a three-dimensional model of a first assembly as an assembly before design change. An information processing unit 113 generates second assembly model information representing a three-dimensional model of a second assembly as an assembly after the design change in which a second component provided in the first assembly is replaced with the first component by supplying the first component model information or the first component drawing information acquired by the component information acquisition unit 111 and the first assembly model information acquired by the assembly information acquisition unit 112 to artificial intelligence and outputs the generated second assembly model information.SELECTED DRAWING: Figure 2

The application discloses a kind of deep foundation pit active compensation support design methods of soil and rock combination stratum, belong to geotechnical mechanics field, first carry out geological survey to the excavation foundation pit, then carry out support scheme design based on obtained geological exploration parameter, and according to whether using long and short anchor cable support and double gradient grouting technology etc., combined with engineering actual design monitoring scheme;And creatively adopt anchor cable construction mode, combined with high pre-tight NPR anchor cable, W steel band etc. Measure, complete the point-line-surface active support of high prestress compensation to foundation pit excavation face.This scheme abandons traditional passive support mode, but takes active compensation mode, according to the stress lost after actual stratum excavation, carries out support parameter design to high prestress NPR anchor cable, realizes the compensation measure to foundation pit, and according to fault, fracture zone etc. Geological condition encountered in actual foundation pit construction process, respectively proposed corresponding support measure, improved foundation pit compensation support design scheme.

The application discloses a tower machine and a typhoon prevention system thereof, which comprises a plurality of support frames embedded in the ground bottom, the support frames are fixed to the tower surface through wall-attached members during the construction of the tower, each support frame is equipped with a typhoon prevention device, the typhoon prevention device comprises a bottom fixing mechanism and a bearing ring frame, the bottom fixing mechanism is assembled at the bottom of the support frame, the bearing ring frame is slidingly assembled on the support frame and can vertically slide along the support frame, and the height change of the tower construction can be adapted through lifting adjustment; the bottom fixing mechanism comprises a support frame and support components distributed around the support frame, and the support frame is sleeved on the bottom of the support frame, the typhoon prevention system of the tower machine is constructed by means of height self-adaptive adjustment, multi-stage mechanical locking and unfolded support design, and the typhoon prevention system integrates dynamic wind resistance, space optimization and failure protection, and the construction safety and structural stability under the typhoon working condition are remarkably improved.

This invention belongs to the field of vehicle maintenance technology, specifically relating to the maintenance of load-bearing support devices, and particularly to an AGV mobile device for electric vehicle production and its operating method. In the first working state, the support member of the AGV mobile device for electric vehicle production radially outwards to open the sealing ring; in the second working state, the support member releases its support on the sealing ring, and the sealing ring radially retracts inwards. By combining the sealing structure of the sealing ring and the lifting cylinder with the radial opening mechanism of the support member, rapid disassembly and assembly of the sealing ring is achieved. During maintenance, simply switching the working state is sufficient to unlock and support the sealing ring, eliminating the step-by-step disassembly steps required for traditional threaded fastening, effectively shortening maintenance time. Simultaneously, the radial support design of the support member for the sealing ring avoids the plastic deformation problem easily caused by traditional interference fits, maintaining the deformation capacity of the sealing ring during repeated disassembly and assembly, significantly improving the service life of the sealing ring.

The utility model belongs to the technical field of steel structure supports, and particularly relates to a greenhouse steel structure support convenient and fast to install, which comprises a peripheral cover frame, a fixed base, a rotating steel net frame, a top beam, a supporting main beam, an auxiliary adjusting assembly and a reinforcing supporting assembly, the supporting main beam is fixedly connected to the top of the fixed base, the rotating steel net rack is movably connected to the top of the supporting main beam, the top beam is rotationally connected to the top of the rotating steel net rack, the auxiliary adjusting assembly is installed on the inner side of the rotating steel net rack, and the reinforcing supporting assembly is fixedly connected to one side of the supporting main beam. According to the device, the peripheral cover frame and the fixed base are in threaded connection, on-site welding operation is avoided, the auxiliary adjusting assembly achieves fine adjustment of the distance between the supporting main beams on the two sides through handle threaded rods and adapts to deformation compensation of greenhouses with different spans, meanwhile, the reinforcing supporting assembly adopts the telescopic supporting design, and therefore the supporting stability is enhanced.

The application provides a deep and shallow buried division method and system of underground engineering based on tunnel excavation effect, and belongs to the technical field of computer-aided design. The scheme comprises the following steps: obtaining an initial ground stress field of a tunnel area; sampling the tunnel area, carrying out a conventional triaxial test, and obtaining a full stress-strain curve of surrounding rock; obtaining ground stress information of a given engineering section according to the initial ground stress field of the tunnel area, establishing a three-dimensional numerical model of the tunnel, carrying out numerical simulation by using a constitutive model considering strain softening, and obtaining a stress field after tunnel excavation; and based on the full stress-strain curve and the stress field after tunnel excavation, deep and shallow buried division is carried out. The scheme fully considers that the occurrence of tunnel disasters under strong tectonic stress is significantly affected by true three-dimensional stress, considers the tunnel excavation effect, carries out deep and shallow buried division based on the true three-dimensional stress field, provides clear suggestions for the selection of the constitutive model of surrounding rock in the design process, and provides clear guidance for support design.

The present application relates to a kind of based on the stability discrimination method, system and medium of foundation pit of graph mutual driving mechanism, method includes: according to the suitable foundation pit support form of foundation pit design requirement, initialize various foundation pit design parameters, in parameter attribute value forward driving mode drawing foundation pit support structure sketch in CAD environment;According to the stability discrimination criterion of foundation pit, the actual working condition of project site is combined with manual tuning to design parameter, parameter adjustment result still uses with attribute driving graph mode immediate update support structure sketch, another can edit the graph element in support structure graph with graph driving attribute mode immediate feedback linkage update foundation pit support parameter;The stability of foundation pit support structure is calculated dynamically in real time throughout, when stability determination meets design requirement, with two three-dimensional interactive intuitive display foundation pit support design scheme, and output various design achievements.The present application can realize the graph attribute bidirectional mutual driving of foundation pit support design, it is convenient to quickly modify and perfect design scheme, improve foundation pit support design efficiency and quality.