Steel structure hoisting scheme verification methods, devices, equipment and storage media

Abstract

This invention belongs to the field of structural construction technology and discloses a method, device, equipment, and storage medium for verifying steel structure hoisting schemes. The method includes: simulating hoisting based on a finite element model to obtain the support reaction force and internal forces and deformations of each member under self-weight conditions; obtaining the pre-hoisting point force at each hoisting point during pre-hoisting and obtaining the internal forces and deformations of each member under vertical displacement difference conditions based on the constructed hoisting point force difference matrix and stiffness matrix; and verifying the steel structure hoisting scheme based on the internal forces and deformations of each member under self-weight conditions and vertical displacement difference conditions. This invention obtains the stiffness matrix and hoisting point force deviation matrix by combining pre-hoisting data with a finite element model, and then calculates the vertical displacement difference. The finite element simulation of the additional internal forces and deformations caused by the vertical displacement difference ensures that the actual internal forces and deformations after considering the vertical displacement difference during hoisting are within a safe range, thereby effectively preventing steel structure damage and hoisting failure due to unreasonable hoisting construction simulation.

Description

Technical Field

[0001] This invention relates to the field of structural construction technology, and in particular to a method, apparatus, equipment and storage medium for verifying steel structure hoisting schemes. Background Technology

[0002] Large-span steel structures are often constructed using integral hoisting and integral jacking methods, which offer advantages such as high project quality, fast construction speed, and good economic benefits. During integral hoisting, the hoisted steel structure modules are suspended in the air in a boundless state, and the structure is in equilibrium under the force of the hoisting points and its own weight.

[0003] Conventional construction verification methods assume that the structure is hinged at the lifting points. The mechanical model of a multi-lifting-point hinge is actually a mechanical model of a statically indeterminate structure. When the lifting of each lifting point is not synchronized, the actual reaction force of each lifting point may differ greatly from the reaction force of the lifting point support under the hinge calculation assumption. This results in inaccurate internal forces, deformation and overall stability of the lifted steel structure module, and the safety of the lifted steel structure module cannot be guaranteed. Summary of the Invention

[0004] In view of this, it is necessary to provide a method, device, equipment and storage medium for verifying steel structure hoisting schemes, so as to solve the technical problem that the actual internal forces and deformations of components during steel structure hoisting are inconsistent with conventional hoisting simulations, resulting in steel structure hoisting damage and hoisting scheme failure.

[0005] To address the above problems, this invention provides a method for verifying steel structure hoisting schemes, including: Based on the finite element model of the steel structure hoisting scheme, hoisting simulation was carried out to obtain the support reaction force under the self-weight condition of each hoisting point and the internal force and deformation of each member under the self-weight condition; Obtain the pre-lifting force at each lifting point during pre-lifting according to the steel structure lifting scheme; The force difference of each lifting point is obtained based on the pre-lifting lifting point force and the support reaction force under the self-weight of each lifting point, and a lifting point force difference matrix is ​​constructed based on the force difference of each lifting point. Based on the force difference matrix of the lifting points, the forced unit displacement of the support is applied to each lifting point in the finite element model in sequence to obtain multiple sets of support unit reactions. Based on the multiple sets of support unit reactions, a stiffness matrix based on the vertical displacement difference of the lifting points is constructed. Based on the lifting point force difference matrix and the stiffness matrix, the lifting simulation of the finite element model is performed to obtain the internal forces and deformations of each member under the vertical displacement difference condition; The steel structure hoisting scheme is verified based on the internal forces and deformations of each member under the self-weight condition and the internal forces and deformations of each member under the vertical displacement difference condition.

[0006] In one possible implementation, the step of obtaining the force difference between each lifting point based on the pre-lifting force of each lifting point and the support reaction force of each lifting point under its own weight, and constructing a lifting point force difference matrix based on the force difference between each lifting point, includes: The support reaction forces under the self-weight condition of each lifting point are added together to obtain the sum of the support reaction forces under the self-weight condition. The pre-lifting lifting point forces of each lifting point are added together to obtain the sum of the pre-lifting lifting point forces. The sum of the pre-lifting lifting point forces is divided by the sum of the support reaction forces under the self-weight condition to obtain the correction coefficient of the support reaction force under the self-weight condition. The support reaction force of each lifting point under its own weight is corrected according to the support reaction force correction coefficient under its own weight to obtain the corrected support reaction force of each lifting point under its own weight. The force difference between each lifting point is obtained by subtracting the support reaction force under the corrected self-weight condition from the pre-lifting force of each lifting point, and a lifting point force difference matrix is ​​constructed based on the force difference between each lifting point.

[0007] In one possible implementation, the step of performing a hoisting simulation on the finite element model based on the lifting point force difference matrix and the stiffness matrix to obtain the internal forces and deformations of each member under the vertical displacement difference condition includes: Multiplying the inverse of the stiffness matrix by the force difference matrix at each lifting point yields the vertical displacement difference at each lifting point. The finite element model is invoked to simulate the hoisting based on the vertical displacement difference of each hoisting point, so as to obtain the internal forces and deformations of each member under the vertical displacement difference condition.

[0008] In one possible implementation, the finite element model is invoked to perform a hoisting simulation based on the vertical displacement difference between each hoisting point, obtaining the internal forces and deformations of each member under the vertical displacement difference condition, including: The displacement correction coefficient is obtained based on the maximum and minimum vertical displacement differences among the vertical displacement differences at each lifting point; The vertical displacement difference of each lifting point is corrected according to the displacement correction coefficient to obtain the corrected vertical displacement difference of each lifting point; Based on the corrected vertical displacement difference of each lifting point, the lifting points in the finite element model are adjusted, and the lifting simulation is performed based on the adjusted finite element model to obtain the internal forces and deformations of each member under the vertical displacement difference condition.

[0009] In one possible implementation, the step of verifying the steel structure hoisting scheme based on the internal forces and deformations of each member under the self-weight condition and the internal forces and deformations of each member under the vertical displacement difference condition includes: The internal forces and deformations of each member under the self-weight condition are corrected according to the support reaction force correction coefficient under the self-weight condition, so as to obtain the corrected internal forces and deformations of each member under the self-weight condition. The corrected internal forces and deformations of each member under the self-weight condition and the internal forces and deformations of each member under the vertical displacement difference condition are linearly superimposed to obtain the true stress ratio and deflection of each member. The steel structure hoisting scheme is verified based on the actual stress ratio and deflection of each member.

[0010] In one possible implementation, the verification of the steel structure hoisting scheme based on the actual stress ratio and deflection of each member includes: The stress ratio and deflection limits of the preset members are compared with the actual stress ratio and deflection of each member to obtain the verification results of each member. When the actual stress ratio and deflection of each member are less than or equal to the stress ratio limit and deflection limit of the member, the steel structure hoisting scheme is verified. If the actual stress ratio or deflection of each member is greater than the stress ratio limit or deflection limit of the member, the steel structure hoisting scheme fails the verification.

[0011] In one possible implementation, after the step of determining that the steel structure hoisting scheme fails verification when the actual stress ratio or deflection of each member exceeds the member stress ratio limit or deflection limit, the method further includes: Obtain the number of members that failed the verification; When the number of members that fail the verification is less than the preset threshold, the members that fail the verification are reinforced, and the steel structure hoisting scheme verification is passed. When the number of members that fail the verification is greater than or equal to a preset threshold, the steel structure hoisting scheme is adjusted, a new steel structure hoisting scheme is generated, and the new steel structure hoisting scheme is verified until the new steel structure hoisting scheme passes the verification.

[0012] Furthermore, to achieve the above objectives, the present invention also proposes a steel structure hoisting scheme verification device, which includes: The simulated hoisting module is used to simulate hoisting based on the finite element model of the steel structure hoisting scheme, and to obtain the support reaction force under the self-weight condition of each hoisting point and the internal force and deformation of each member under the self-weight condition. The pre-lifting module is used to obtain the pre-lifting force at each lifting point when pre-lifting according to the steel structure lifting scheme. The simulated hoisting module is also used to obtain the force difference of each hoisting point based on the pre-hoisting hoisting point force and the support reaction force under the self-weight of each hoisting point, and to construct a hoisting point force difference matrix based on the force difference of each hoisting point. The simulated hoisting module is also used to apply forced unit displacement of the support to each hoisting point in the finite element model in sequence based on the hoisting point force difference matrix, to obtain multiple sets of support unit reaction forces, and to construct a stiffness matrix based on the vertical displacement difference of the hoisting points based on the multiple sets of support unit reaction forces. The hoisting verification module is used to perform hoisting simulation on the finite element model based on the hoisting point force difference matrix and the stiffness matrix to obtain the internal forces and deformations of each member under the vertical displacement difference condition; The hoisting verification module is also used to verify the steel structure hoisting scheme based on the internal forces and deformations of each member under the self-weight condition and the internal forces and deformations of each member under the vertical displacement difference condition.

[0013] Furthermore, to achieve the above objectives, the present invention also proposes an electronic device, which includes: a memory, a processor, a display, and a steel structure hoisting scheme verification program stored in the memory and executable on the processor. The steel structure hoisting scheme verification program is configured to implement the steps of the steel structure hoisting scheme verification method described above.

[0014] Furthermore, to achieve the above objectives, the present invention also proposes a storage medium storing a steel structure hoisting scheme verification program, wherein when the steel structure hoisting scheme verification program is executed by a processor, the steps of the steel structure hoisting scheme verification method described above are implemented.

[0015] The beneficial effects of adopting the above implementation method are as follows: by combining pre-lifting data with the finite element model, the deviation of lifting point force caused by asynchronous lifting points is directly captured, the actual lifting error is accurately quantified, and the idealized error of conventional hinge assumptions is avoided. The lifting point force difference is converted into vertical displacement difference using the stiffness matrix, and the additional internal force and deformation caused by the displacement difference are calculated by finite element simulation, ensuring the integrity of the structural response calculation. Through linear superposition verification, it is ensured that the strength and deformation of the structural members are within the safe range under the consideration of actual lifting conditions, thereby effectively preventing steel structure damage and failure caused by the incompatibility between conventional construction verification methods and actual conditions. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a flowchart illustrating the first embodiment of the steel structure hoisting scheme verification method of the present invention; Figure 2 This is a schematic diagram of the lifting points in the first embodiment of the steel structure hoisting scheme verification method of the present invention; Figure 3 This is a schematic diagram illustrating the specific steps of the steel structure hoisting scheme verification method in the first embodiment of the present invention. Figure 4 This is a flowchart illustrating the second embodiment of the steel structure hoisting scheme verification method of the present invention; Figure 5 This is a structural block diagram of the first embodiment of the steel structure hoisting scheme verification device of the present invention; Figure 6 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] In the description of the embodiments of this application, unless otherwise stated, "a plurality of" means two or more.

[0020] In this embodiment of the invention, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, apparatus, product or device that includes a series of steps or modules is not necessarily limited to those steps or modules that are explicitly listed, but may include other steps or modules that are not explicitly listed or that are inherent to such process, method, product or device.

[0021] The naming or numbering of steps in the embodiments of the present invention does not mean that the steps in the method flow must be executed in the time / logical order indicated by the naming or numbering. The execution order of the named or numbered process steps can be changed according to the technical purpose to be achieved, as long as the same or similar technical effect can be achieved.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] The executing entity in this embodiment can be a computing service device with data processing, network communication, and program execution functions, such as a tablet computer, personal computer, or mobile phone, or an electronic device or steel structure hoisting scheme verification device capable of performing the above functions. The following description uses a steel structure hoisting scheme verification device as an example to illustrate this embodiment and the subsequent embodiments.

[0024] This invention provides a method for verifying steel structure hoisting schemes, referring to... Figure 1 , Figure 1 This is a flowchart illustrating the first embodiment of the steel structure hoisting scheme verification method of the present invention.

[0025] In this embodiment, the steel structure hoisting scheme verification method includes steps S10~S60: Step S10: Perform hoisting simulation based on the finite element model of the steel structure hoisting scheme to obtain the support reaction force under the self-weight condition of each hoisting point and the internal force and deformation of each member under the self-weight condition.

[0026] It should be noted that the steel structure hoisting scheme can be pre-set. The specific setting can be based on experience or calculated by algorithms or tools. This embodiment does not limit this.

[0027] It should be noted that the steel structure hoisting plan may include steel structure construction design drawings. The steel structure construction design drawings determine the number of hoisting points for the overall hoisting of the steel structure and the position of each hoisting point. Each hoisting point can be numbered sequentially as 1, 2, 3, ..., i, ..., n.

[0028] It should be noted that the steel structure hoisting scheme may also include the geometric parameters of the entire hoisting structure, such as the overall structural drawings and detailed node drawings, member positioning and length, node coordinates, and the cross-sectional shape and size of each member; it may also include material parameters, such as elastic modulus, Poisson's ratio, yield strength, and tensile strength; it may also include boundary condition parameters, which are the core of the finite element model for simulating hoisting conditions; and it may also include load parameters, etc.

[0029] It is understandable that a finite element model can be a numerical model constructed based on a steel structure hoisting scheme. Based on this numerical model, the actual situation of the steel structure hoisting scheme can be simulated. Through the finite element model, situations that do not occur in reality can be simulated. Specifically, the actual continuous steel structure is discretized into a collection of a large number of tiny and simple "units" (such as beam units and rod units) connected by "nodes". The finite element model includes the geometry of the structure, material properties (such as elastic modulus and density), cross-sectional properties and boundary conditions.

[0030] It should be noted that the self-weight load case only considers the load of the structure itself, which is the most basic and primary load that the structure bears during hoisting. Under the self-weight load case, wind load, dynamic effects, asynchronous loads, and any other additional loads are not considered, representing the most ideal and simplest stress state.

[0031] It should be noted that the support reaction force is the upward force exerted on the structure by the lifting point to balance the structure's self-weight. In the finite element model for lifting simulation, since the lifting points are assumed to be "hinged", these reaction forces are theoretical calculation values, representing the force that each lifting point "should" bear under absolutely synchronous and ideal lifting conditions. They serve as the benchmark for subsequent comparisons of the lifting point forces of each lifting point with the actual measured values.

[0032] It should be noted that the internal forces of each member refer to the forces generated within the structural members, including the axial force, shear force, bending moment, and torque on the member's cross-section. These internal forces are the direct basis for determining whether the member itself will suffer strength failure or instability. For example, excessive axial force may lead to tensile fracture or buckling, while excessive bending moment may lead to bending failure.

[0033] Deformation refers to the changes in shape and size of a structure under its own weight, typically the linear displacement (deflection) or rotation of nodes. It is used to determine the stiffness and stability of the structure during hoisting, ensuring that the deformation is within the allowable range and avoiding structural damage or installation difficulties due to excessive deformation.

[0034] In the specific implementation, a finite element model of the overall hoisting steel structure module is established. Vertical and horizontal constraints are applied to a certain corner hoisting point, while only vertical constraints are applied to the other hoisting points. The support reaction forces R1, R2, ..., Ri, ..., Rn of each hoisting point under self-weight conditions are obtained through static calculation. At the same time, the internal forces and deformations of each member of the steel structure module under self-weight conditions are recorded.

[0035] Step S20: Obtain the pre-lifting force of each lifting point during pre-lifting according to the steel structure lifting scheme.

[0036] It is understandable that the finite element model is a numerical hoisting simulation based on the steel structure hoisting scheme. However, there are still differences between the numerical hoisting simulation and the actual hoisting results. These differences can be reflected in the forces at each hoisting point.

[0037] It should be understood that during actual hoisting, there are interaction forces between the various structures, the hoisting surface may have slight horizontal tilt, and each hoisting point may have different degrees of vertical displacement. This will result in the stress on each suspended ceiling being different from the simulation of the finite element model. Pre-hoisting can collect the actual stress on each hoisting point in advance. Based on the actual stress, combined with the finite element model, the actual hoisting scheme can be more closely matched, thereby accurately analyzing whether the hoisting scheme is reasonable.

[0038] It is understandable that the positions of each lifting point during pre-lifting are the same as the positions of the lifting points in the finite element model.

[0039] In practice, the steel structure modules are pre-lifted on the construction site to completely lift them off the ground. The lifting force F1, F2, ..., Fi, ..., Fn at each lifting point during pre-lifting is obtained by converting the hydraulic pressure value of the hydraulic jacks at the lifting points.

[0040] Step S30: Obtain the force difference of each lifting point based on the pre-lifting lifting point force and the support reaction force under the self-weight of each lifting point, and construct a lifting point force difference matrix based on the force difference of each lifting point.

[0041] It should be noted that the pre-lifting force of each lifting point in this embodiment can be understood as the force of each lifting point during pre-lifting, which is obtained by converting the hydraulic pressure value of the hydraulic jack at the lifting point. However, the lifting force during pre-lifting can also be obtained by other means, and this embodiment does not limit it.

[0042] In one feasible implementation, step S30 may include steps A31 to A33: Step A31: Add the support reaction forces of each lifting point under its own weight to obtain the sum of support reaction forces under its own weight; add the pre-lifting lifting point forces of each lifting point to obtain the sum of pre-lifting lifting point forces; divide the sum of pre-lifting lifting point forces by the sum of support reaction forces under its own weight to obtain the correction coefficient for support reaction forces under its own weight.

[0043] It should be noted that the calculation of the support reaction correction factor can refer to the following formula:

[0044] Where Fi represents the lifting point force during pre-lifting, Ri represents the support reaction force under self-weight conditions, and η represents the support reaction force correction coefficient.

[0045] Step A32: Correct the support reaction force of each lifting point under its own weight according to the correction coefficient of the support reaction force under its own weight to obtain the corrected support reaction force of each lifting point under its own weight.

[0046] It should be noted that the support force correction coefficient can be used to correct the support reaction force by multiplying the support force correction coefficient by the support reaction force under the self-weight condition of each lifting point, thus obtaining the corrected support reaction force under the self-weight condition of each lifting point.

[0047] Step A33: Subtract the support reaction force under the corrected self-weight condition from the pre-lifting force of each lifting point to obtain the force difference value of each lifting point, and construct the lifting point force difference matrix based on the force difference value of each lifting point.

[0048] It should be noted that the force difference between each lifting point, obtained from the pre-lifting force and the support reaction force under the self-weight condition, can be the difference ΔFi between the pre-lifting force Fi and the corrected support reaction force Ri under the self-weight condition, i.e., ΔFi = Fi - Ri. The force difference matrix {ΔF} can be written as: {ΔF}={ΔF1, ΔF2,…,ΔFi,…,ΔFn} T Where Ri represents the support reaction force after correction by the support force correction coefficient; Fi represents the lifting point force during pre-lifting; and {ΔF} represents the force difference matrix at each lifting point.

[0049] In this embodiment, the correction coefficient mainly considers factors such as construction load, the weight of secondary components of the steel structure (such as connecting plates, welds, etc., which are not directly reflected in the self-weight condition in the finite element model), and steel structure installation error. This allows for a more accurate description of the difference in force between the finite element model and the actual hoisting process at each lifting point. As a result, the finite element model can be adjusted based on the difference between the two, making the adjusted finite element model more consistent with the actual situation, thereby accurately analyzing whether the current hoisting scheme meets the requirements.

[0050] It should be noted that the "support reaction force correction coefficient under self-weight condition" is essentially a correction coefficient applied to the ideal self-weight condition to account for additional loads such as construction loads and the inconsistency between the actual component self-weight and the ideal component self-weight in the finite element model.

[0051] The above are merely feasible implementations of step S30 provided in this embodiment. This embodiment does not specifically limit the specific implementation of step S30.

[0052] Step S40: Based on the lifting point force difference matrix, apply forced unit displacement of the support to each lifting point in the finite element model in sequence to obtain multiple sets of support unit reaction forces, and construct a stiffness matrix based on the vertical displacement difference of the lifting points according to the multiple sets of support unit reaction forces.

[0053] It should be noted that the lifting point force difference matrix includes the difference for each lifting point, which may be positive or negative. Based on the difference, the vertical position of each lifting point in the finite element model is forcibly adjusted, so that the state of each lifting point in the finite element model when lifting according to the lifting scheme is closer to the state during actual lifting.

[0054] It is important to emphasize that each time a forced unit displacement of the support is applied to one of the lifting points in the finite element model, the unit support reaction force of each lifting point (including the lifting point to which the forced unit displacement of the support is applied) is collected. At this time, the unit support reaction force of each lifting point is a set of unit support reaction forces. Then, a forced unit displacement of the support is applied to another lifting point to obtain a set of unit support reaction forces. The forced unit displacement of the support is applied to each lifting point in sequence, and finally multiple sets of unit support reaction forces are obtained.

[0055] In the specific implementation, the finite element model of the overall hoisting steel structure module is used, and the constraints of each hoisting point remain unchanged. For each basic working condition, one hoisting point is selected to undergo a unit displacement upward relative to the other hoisting points. During the calculation, the unit displacement is applied to the hoisting point as a forced displacement of the support. Gravity load is ignored, and the support reaction force of each hoisting point is obtained through static calculation. Basic working condition 1: Applying only an upward unit displacement of 1mm to lifting point 1, the support reaction force at lifting point 1 is k11, the support reaction force at lifting point 2 is k21, ..., the support reaction force at lifting point i is ki1, ..., the support reaction force at lifting point n is kn1; Basic working condition i: Applying only an upward unit displacement of 1mm to lifting point i, the support reaction force at lifting point 1 is k1i, the support reaction force at lifting point 2 is k2i, ..., the support reaction force at lifting point i is kii, ..., the support reaction force at lifting point n is kni; Basic working condition n: Applying only an upward unit displacement of 1mm to lifting point n, the support reaction force at lifting point 1 is k1n, the support reaction force at lifting point 2 is k2n, ..., the support reaction force at lifting point i is kin, ..., the support reaction force at lifting point n is knn.

[0056] It should be noted that the stiffness matrix [k] for the vertical displacement difference of the suspension point, constructed based on the above multiple sets of support unit reactions, can refer to the following formula:

[0057] Step S50: Based on the lifting point force difference matrix and the stiffness matrix, perform a lifting simulation on the finite element model to obtain the internal forces and deformations of each member under the vertical displacement difference condition.

[0058] It should be noted that determining whether a hoisting scheme can meet hoisting requirements requires judging whether the internal forces and deformations of each member under the vertical displacement difference condition are within the acceptable range of internal forces and deformations.

[0059] It should be noted that the calculation of the internal forces and deformations of each member under the vertical displacement condition is based on the calculation of the internal forces and deformations of each member under the condition of applying vertical displacement to each lifting point; the vertical displacement difference of each lifting point can be determined by calculation based on the lifting point force difference matrix and stiffness matrix.

[0060] In this process, after calculating and determining the vertical displacement difference of each suspended ceiling based on the force difference matrix and stiffness matrix of the suspension points, the corresponding vertical displacement difference is applied to each suspension point in the finite element model, and then the hoisting simulation is performed. Finally, the internal forces and deformations of each member are analyzed.

[0061] It should be noted that the finite element analysis software in this embodiment can be Midas / Gen, SAP2000, PKPM, YJK, etc., and this embodiment does not limit it.

[0062] In one feasible implementation, step S50 may include steps A51-A52: Step A51: Multiply the inverse of the stiffness matrix by the lifting point force difference matrix to obtain the vertical displacement difference of each lifting point.

[0063] It should be noted that a balance equation is pre-defined between the vertical displacement difference {Δ} between each lifting point and the force difference matrix {ΔF} between the lifting points. Please refer to the following formula for details: {Δ}=[ k ] -1 {Δ F} Where {Δ} represents the vertical displacement difference between the lifting points, which can be written as {Δ} = {Δ1, Δ2, ..., Δi, ..., Δn}T, and Δi is the force difference between the lifting points (this difference is the difference between the vertical displacement of lifting point i during the overall lifting process and the vertical displacement of each lifting point under absolute horizontal conditions), [k] -1 This represents the inverse of the stiffness matrix.

[0064] Step A52: Call the finite element model to perform hoisting simulation based on the vertical displacement difference of each hoisting point, and obtain the internal forces and deformations of each member under the vertical displacement difference condition.

[0065] In practical implementation, based on the finite element model of the overall hoisting steel structure module described above, the constraint conditions of each hoisting point remain unchanged. The calculated {Δ} is applied as the forced displacement of the support to each hoisting point, that is, a forced displacement Δ1 is applied to hoisting point 1, a forced displacement Δ2 is applied to hoisting point 2, ..., a forced displacement Δi is applied to hoisting point i, ..., a forced displacement Δn is applied to hoisting point n. Neglecting gravity load, the internal forces and deformations of each member of the steel structure module under the vertical displacement difference {Δ} of the hoisting points are obtained through static calculations.

[0066] It should be noted that the process of calling the finite element model to perform hoisting simulation based on the vertical displacement difference of each lifting point, and obtaining the internal forces and deformations of each member under the vertical displacement difference condition, includes: obtaining a displacement correction coefficient based on the maximum and minimum vertical displacement difference among the vertical displacement differences of each lifting point; correcting the vertical displacement difference of each lifting point based on the displacement correction coefficient to obtain the corrected vertical displacement difference of each lifting point; adjusting each lifting point in the finite element model based on the corrected vertical displacement difference of each lifting point, and performing hoisting simulation based on the adjusted finite element model to obtain the internal forces and deformations of each member under the vertical displacement difference condition.

[0067] It should be noted that the vertical displacement of each lifting point in the finite element model is adjusted based on the calculated vertical displacement difference to simulate the actual lifting conditions. However, in actual lifting, the entire lifting structure may have an overall horizontal tilt. This would mean that directly adjusting the vertical displacement of the finite element model would not accurately reflect the actual lifting situation. Therefore, the vertical displacement of each lifting point is further optimized to better reflect the actual lifting conditions.

[0068] Specifically, the optimization involves obtaining displacement correction parameters based on the maximum and minimum vertical displacement differences among the vertical displacement differences of each lifting point, and then correcting the vertical displacement of each lifting point based on these parameters.

[0069] In specific implementation, the vertical displacement difference {Δ} between each lifting point is the relative height difference between each lifting point. The displacement difference between each lifting point needs to be corrected by subtracting a constant C. The calculation of the constant C as the displacement correction parameter can refer to the following formula:

[0070] Furthermore, the vertical displacement difference after correcting the vertical displacement difference for each lifting point based on the displacement correction parameters can be referenced by the following formula: {Δ}={Δ1-C, Δ2-C,…,Δ i -C, ..., Δ n -C} T In this embodiment, by performing hoisting simulation in the finite element model based on the vertical displacement difference corrected for each hoisting point, the vertical displacement deviation of each hoisting point caused by the overall horizontal tilt during the actual hoisting process can be fully considered. This makes the simulation data of the finite element model more consistent with the actual situation, and thus allows for more accurate verification of whether the current hoisting scheme is qualified through the finite element model.

[0071] The above are merely feasible implementations of step S50 provided in this embodiment. This embodiment does not specifically limit the specific implementation of step S50.

[0072] Step S60: Verify the steel structure hoisting scheme based on the internal forces and deformations of each member under the self-weight condition and the internal forces and deformations of each member under the vertical displacement difference condition.

[0073] It should be noted that, in verifying the steel structure hoisting scheme based on the internal forces and deformations of each member under the self-weight condition and the internal forces and deformations of each member under the vertical displacement difference condition, the internal forces and deformations of each member under the self-weight condition and the internal forces and deformations of each member under the vertical displacement difference condition can be superimposed. The superimposed internal forces and deformations of each member are then checked to see if they are within the bearing capacity of each steel structure member, thereby determining whether the current hoisting scheme is qualified.

[0074] In practice, we will take the overall jacking construction of a large-span steel structure in a certain actual project as an example for explanation.

[0075] Towers C and D of this project are super high-rise connected structures. The two buildings are connected by a large-span steel truss between the 24th and 34th floors. The lower 24th and 25th floors are the main truss, while the upper 26th to 34th floors are open trusses. The large-span steel truss between the 24th and 25th floors is constructed using the overall jacking method, while the steel structure of the upper floors is constructed using the high-altitude bulk splicing method.

[0076] Based on the steel structure construction design drawings, the frame columns of the two towers are initially determined as the jacking points for the overall lifting. There are four jacking points on each tower, numbered sequentially as Lifting Point 1, Lifting Point 2, Lifting Point 3, Lifting Point 4, Lifting Point 5, Lifting Point 6, Lifting Point 7, and Lifting Point 8. An example diagram of the lifting points can be referenced. Figure 2 .

[0077] A finite element model of the overall lifting steel structure module was established using the finite element software Midas / Gen. Vertical and horizontal constraints were applied at lifting point 1, while only vertical constraints were applied to lifting points 2 to 8. Static calculations yielded the support reactions at each lifting point under its own weight: R1=R4=R5=R8=1076.9kN, R2=R3=R6=R7=1321.3kN. Verification showed that the strength and deformation of each member of the steel structure module met the requirements without considering the influence of vertical displacement differences at the lifting points.

[0078] At the construction site, the steel structure modules were pre-lifted, so that the steel structure modules were completely lifted off the ground by about 30cm and then left to stand for 24 hours. The lifting force of each lifting point during the pre-lifting was obtained by converting the oil pressure value of the hydraulic jacks of the lifting support: F1=1319.7kN, F2=1119.5kN, F3=1709.3kN, F4=1127.5kN, F5=1309.4kN, F6=1166.0kN, F7=1660.2kN, and F8=1140.4kN.

[0079] The support reactions R1~R8 under the self-weight condition are corrected based on the lifting point force during pre-lifting, with a correction factor of η=1.10. For ease of subsequent calculations, the load combination factor for self-weight in the Midas / Gen software can be changed from 1.0 to 1.10. Considering the corrected difference matrix {ΔF} between each lifting point, it can be written as: {ΔF}={135.1-333.9255.9-57.1124.8-287.4206.8-44.2} T (kN) Based on the above finite element model, the constraints of each lifting point remain unchanged. For each basic working condition, one lifting point is selected to undergo a unit displacement of 1 mm relative to the other lifting points. During the calculation, the unit displacement is applied to the lifting point as a forced displacement of the support. Gravity load is neglected, and the support reaction force of each lifting point is obtained through static calculation. From this, the stiffness matrix [k] based on the vertical displacement difference of the lifting points can be obtained: (kN / mm) During the overall lifting process, the formula {Δ}=[k] applies. -1 From {ΔF}, we can obtain: {Δ}={-40.1 -20.5 20.5 45.1 -38.3 -18.5 18.1 43.2}T (mm).

[0080] The vertical displacement difference {Δ} between each lifting point is the relative height difference between each lifting point. The displacement difference between each lifting point needs to be corrected by subtracting a constant C. The constant C is: C = (-40.1 + 45.1) / 2 = 2.5 (mm) The corrected {Δ} = {-42.6 -23.0 18.0 42.6 -40.8 -21.0 15.6 40.7} T (mm).

[0081] Based on the above finite element model, the constraint conditions of each lifting point remain unchanged. The modified {Δ} is applied as the forced displacement of the support to each lifting point. Gravity load is ignored. The support reaction force of each lifting point, the internal force and deformation of each member of the steel structure module under the vertical displacement difference {Δ} of the lifting point are obtained by static calculation.

[0082] By linearly superimposing the support reaction forces at each lifting point, the internal forces and deformations of each member of the steel structure module under the self-weight condition, and the support reaction forces at each lifting point, the internal forces and deformations of each member of the steel structure module under the vertical displacement difference {Δ} condition, we can obtain the support reaction forces at each lifting point, the internal forces and deformations of each member of the steel structure module after considering the influence of the vertical displacement difference.

[0083] The linear superposition of the above self-weight condition and the vertical displacement difference {Δ} condition of the lifting point can be achieved by the load combination of the finite element software Midas / Gen. The load combination considering the influence of the vertical displacement difference of the lifting point is: 1.1 times the self-weight + 1.0 times the vertical displacement difference {Δ} of the lifting point.

[0084] exist Figure 2 The paper presents the support reaction force of each lifting point after considering the influence of the vertical displacement difference of the lifting point using the finite element software Midas / Gen. The support reaction force is basically consistent with the lifting point force during pre-lifting, indicating that the calculation method of the present invention is effective and accurate.

[0085] Using the finite element software Midas / Gen, the strength and deformation of each member of the steel structure module after considering the influence of vertical displacement difference at the lifting points were verified to meet the requirements. In this project, after considering the influence of vertical displacement difference at the lifting points, only the strength of local transverse members (at the mid-span of the two middle spans and at the supports) exceeded the design strength of the steel. After on-site reinforcement of these members, subsequent jacking construction was carried out. The lifting point force in the subsequent formal jacking stage was consistent with the lifting point force in the pre-jacking stage, thus ensuring the safety of the overall jacking construction structure of the project.

[0086] It is worth emphasizing that, based on the above embodiments, the detailed steps for verifying the steel structure hoisting scheme can be found in the diagram. Figure 3 The details are as follows: S1. Determine the overall steel structure hoisting plan and initially determine the number and location of hoisting points; then perform preliminary construction verification to check whether the strength and deformation of each member meet the requirements without considering the vertical displacement difference of the hoisting points. If the requirements are not met, modify the number and location of hoisting points and continue to execute step S1; if the requirements are met, execute step S2. S2. Establish a finite element model to obtain the support reaction force R at each lifting point under its own weight. i Record the internal forces and deformations of each member under self-weight conditions, and execute step S3, where the support reaction force R... i ; S3. Perform pre-lifting and obtain the lifting force F at each lifting point during pre-lifting. i Then, the difference between the pre-lifting point force and the statically calculated support reaction force is obtained, and step S4 is executed, where the support reaction force R... i The lifting force F at the lifting point during pre-lifting in step S3 needs to be considered. i Make a correction, with a correction factor of η; S4. Based on the finite element model in step S2, select one lifting point for each basic working condition to have a unit displacement relative to the other lifting points, and apply it as a forced displacement of the support to the ceiling. Ignore the gravity load, obtain the support reaction force kii of each lifting point, and thus obtain the stiffness matrix [k] based on the vertical displacement difference of the lifting points, and execute step S5. S5. Calculate the vertical displacement difference between each lifting point. And execute step S6, wherein the vertical displacement difference It can be determined by the displacement difference of each lifting point. Simultaneously, a constant C is subtracted for correction; S6. Based on the finite element model in step S2, The forced displacement of the supports is applied at each lifting point, and the vertical displacement difference of the lifting points is obtained through static calculation. Under the working condition, determine the support reaction force at the lifting point, the internal force and deformation of each member, and then proceed to step S7.

[0087] S7. Compare the internal forces and deformations of each member under self-weight conditions in step S2 with the vertical displacement difference of the lifting point in step S6. Under the working condition, the internal forces and deformations of each member are linearly superimposed to obtain the support reaction force of the suspension point after considering the influence of the vertical displacement difference of the ceiling, the internal forces and deformations of each member, and then execute step S8. In this step, the support reaction force of each suspension point after considering the influence of the vertical displacement difference of the suspension point needs to be basically consistent with the suspension point force during pre-installation.

[0088] S8. After considering the influence of vertical displacement difference, verify whether the strength and deformation of each member of the steel structure meet the requirements. If they meet the requirements, the lifting force at the lifting points in the subsequent formal lifting stage will be consistent with the lifting force at the pre-lifting stage, and the steel structure lifting scheme verification is completed. If they do not meet the requirements, there are two situations: First, if the internal forces and deformations of many members do not meet the requirements, modify the overall lifting scheme, increase the number of lifting points, and repeat steps S2-S8 to recalculate. Second, if a small number of members do not meet the requirements, reinforce the members that do not meet the requirements, and ensure that the lifting force at the lifting points in the subsequent lifting stage is consistent with the lifting force at the pre-lifting stage.

[0089] This embodiment provides a method for verifying steel structure hoisting schemes. By combining pre-hoisting data with a finite element model, it directly captures the hoisting point force deviation caused by asynchronous hoisting points, accurately quantifies the actual hoisting error, and avoids the idealized error of conventional hinge assumptions. The stiffness matrix is ​​used to convert the hoisting point force difference into a vertical displacement difference, and the additional internal forces and deformations caused by the displacement difference are calculated through finite element simulation, ensuring the integrity of the structural response calculation. Through linear superposition verification, it is ensured that the strength and deformation of the structural members are within a safe range under the consideration of actual hoisting conditions, and that the actual internal forces and deformations after considering the vertical displacement difference during hoisting are within a safe range, thereby effectively preventing steel structure damage and hoisting failure due to unreasonable hoisting construction simulation.

[0090] Based on the first embodiment of this application, in the second embodiment of this application, the content that is the same as or similar to that in Embodiment 1 above can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 4 Step S60, the steel structure hoisting scheme verification method further includes steps S61~S63: Step S61: Correct the internal forces and deformations of each member under the self-weight condition according to the support reaction force correction coefficient under the self-weight condition, and obtain the corrected internal forces and deformations of each member under the self-weight condition.

[0091] It is understandable that the correction factor for the internal forces and deformations of each member under self-weight conditions can be obtained by multiplying the correction factor for the support reaction force by the internal forces of each member under self-weight conditions, and by multiplying the correction factor for the support reaction force by the deformations of each member under self-weight conditions.

[0092] Step S62: Perform linear superposition calculation on the corrected internal forces and deformations of each member under the self-weight condition and the internal forces and deformations of each member under the vertical displacement difference condition to obtain the true stress ratio and deflection of each member.

[0093] It should be noted that the corrected internal forces, deformations, and vertical displacement differences of each member can be linearly superimposed to obtain the superimposed internal forces and deformations of each member; then, the true stress ratio and deflection of each member can be obtained from the superimposed internal forces and deformations of each member.

[0094] It should be noted that "stress ratio" usually refers to the ratio of the actual stress in a member to the allowable stress of the material (such as yield strength or tensile strength). In fields such as steel structure design, it specifically refers to utilization rate, that is, the ratio of actual applied force to the load-bearing capacity of the member. Deflection is the lateral displacement of a member under load and is an indicator for stiffness control.

[0095] It should be noted that linear superposition can be directly understood as the addition of internal forces and deformations, with the two independent of each other. The linear superposition of the self-weight condition and the condition with the vertical displacement difference {Δ} of the lifting points can be achieved through load combination in finite element software. The load combination considering the influence of the vertical displacement difference of the lifting points is: η times the self-weight + 1.0 times the vertical displacement difference {Δ} of the lifting points. After considering the influence of the vertical displacement difference of the lifting points, the support reaction force of each lifting point should be basically consistent with the lifting point force during pre-lifting.

[0096] Step S63: Verify the steel structure hoisting scheme based on the actual stress ratio and deflection of each member.

[0097] Understandably, stress ratio limits and deflection limits for members are preset, and the actual stress ratio and deflection of each member are compared with the preset stress ratio limits and deflection limits. The verification results of the steel structure hoisting scheme are obtained based on the comparison results.

[0098] In one feasible implementation, step S63 may include steps A631 to A633: Step A631: Compare the preset stress ratio limit and deflection limit of the rod with the actual stress ratio and deflection of each rod to obtain the verification results of each rod.

[0099] It should be noted that the pre-set stress ratio limit and deflection limit of the members can be understood as meaning that the hoisted steel structure is considered safe and meets the design specifications and engineering requirements only if the limits are met.

[0100] It should be noted that the stress ratio limit is usually set at 1.0. The actual internal force (demand) of the member cannot exceed its bearing capacity (supply). A stress ratio < 1.0 indicates that the member strength is sufficient and there is a safety reserve; a stress ratio > 1.0 indicates that the member strength is insufficient and may fail; a stress ratio equal to 1.0 indicates that the member strength is sufficient.

[0101] Step A632: When the actual stress ratio and deflection of each member are less than or equal to the stress ratio limit and deflection limit of the member, the steel structure hoisting scheme is verified.

[0102] It should be noted that stress ratio and deflection need to be judged for each member. If the stress ratio is less than or equal to the member's stress ratio limit and the member's deflection is less than or equal to the member's deflection limit, then the member is considered to meet the requirements for steel structure hoisting.

[0103] It should be understood that if the stress ratio and deflection of each member meet the requirements, the steel structure hoisting scheme can be directly considered to have passed the verification.

[0104] Step A633: If the actual stress ratio or deflection of some members is greater than the stress ratio limit or deflection limit of the members, then the steel structure hoisting scheme fails the verification.

[0105] It should be noted that if the stress ratio of some members exceeds the stress ratio limit or the deflection exceeds the deflection limit, the steel structure hoisting scheme will fail the verification. It is not the case that all members fail the verification. In other words, if some members meet the requirements and some do not, it is necessary to further analyze the specific situation and determine whether the current steel structure hoisting scheme has passed the verification based on the number of members that meet the requirements.

[0106] It should be noted that steps S623 may be followed by steps A624 to A626: Step A624: Obtain the number of members that failed the verification.

[0107] It is understandable that each member is marked, and each member is checked separately during the verification process. If the verification fails, it is recorded separately or marked as unqualified. After all members have been verified, the number of members that failed the verification is counted.

[0108] Step A625: When the number of members that fail the verification is less than the preset threshold, the members that fail the verification are reinforced, and the steel structure hoisting scheme verification is passed.

[0109] It should be noted that the preset quantity threshold can be set as a percentage of the total number of rods, or it can be a specific value, such as 40%, 10, etc. There is no limit to the specific quantity or the specific percentage. You can choose to set it according to your needs and actual situation.

[0110] Step A626: When the number of members that fail the verification is greater than or equal to the preset number threshold, adjust the steel structure hoisting scheme, generate a new steel structure hoisting scheme, and verify the new steel structure hoisting scheme until the new steel structure hoisting scheme passes the verification.

[0111] Understandably, if the number of members that fail the verification is less than the preset threshold, the current hoisting scheme is considered to be salvageable. If the number of members that fail the verification is greater than or equal to the preset threshold, it can be understood that the current hoisting scheme is unreasonable and a new hoisting scheme needs to be redesigned.

[0112] In practical implementation, the internal forces and deformations of each member of the steel structure module after considering the vertical displacement difference of the lifting points are assessed to determine the safety of the steel structure module during the lifting process, and to verify whether the strength and deformation of each member of the steel structure module meet the requirements. If the requirements are met, the original overall lifting scheme of the steel structure is feasible, and the lifting point force in the subsequent formal lifting stage is consistent with the lifting point force in the pre-lifting stage, and the construction verification is completed; if the requirements are not met, the following measures are taken: ① If a small number of steel structure members do not meet the requirements, the steel structure members that do not meet the requirements are reinforced, and the lifting point force in the subsequent formal lifting stage is consistent with the lifting point force in the pre-lifting stage, and the construction verification is completed; ② If a large number of steel structure members do not meet the requirements, the overall lifting scheme needs to be modified, the number of lifting points increased, and the construction verification is carried out again.

[0113] This embodiment provides a method for verifying steel structure hoisting schemes. The difference between the measured hoisting point force obtained through "pre-hoisting" and the theoretical model is used as a correction coefficient to accurately correct the internal forces and deformations of the members under self-weight conditions. This calibrates the theoretical finite element model into a "dedicated model" that fits the actual hoisting system. Furthermore, by calculating and introducing the "vertical displacement difference" condition caused by the difference in hoisting point forces, and linearly superimposing it with the corrected self-weight condition, the "true stress ratio and deflection" of each member can be calculated in advance, reflecting real risks such as asynchronous hoisting. This achieves advanced and accurate simulation of the stress and deformation of the structure under actual hoisting conditions, providing a scientific and reliable basis for decision-making regarding the feasibility and safety of the hoisting scheme, and fundamentally avoiding the risk of hoisting damage and failure due to the disconnect between the scheme and reality.

[0114] To better implement the steel structure hoisting scheme verification method in this embodiment of the invention, based on the steel structure hoisting scheme verification method, correspondingly, as follows: Figure 5 As shown, this embodiment of the invention also provides a steel structure hoisting scheme verification device. The steel structure hoisting scheme verification device 500 includes: The simulation hoisting module 501 is used to simulate hoisting based on the finite element model of the steel structure hoisting scheme, and to obtain the support reaction force under the self-weight condition of each hoisting point and the internal force and deformation of each member under the self-weight condition. The pre-lifting module 502 is used to obtain the pre-lifting force of each lifting point when pre-lifting according to the steel structure lifting scheme; The simulated hoisting module 501 is also used to obtain the force difference of each hoisting point based on the pre-hoisting hoisting point force and the support reaction force under the self-weight of each hoisting point, and to construct a hoisting point force difference matrix based on the force difference of each hoisting point. The simulated hoisting module 501 is also used to apply forced unit displacement of the support to each hoisting point in the finite element model in sequence based on the hoisting point force difference matrix, to obtain multiple sets of support unit reaction forces, and to construct a stiffness matrix based on the vertical displacement difference of the hoisting points based on the multiple sets of support unit reaction forces. The hoisting verification module 503 is used to perform hoisting simulation on the finite element model based on the hoisting point force difference matrix and the stiffness matrix to obtain the internal forces and deformations of each member under the vertical displacement difference condition; The hoisting verification module 503 is also used to verify the steel structure hoisting scheme based on the internal forces and deformations of each member under the self-weight condition and the internal forces and deformations of each member under the vertical displacement difference condition.

[0115] The steel structure hoisting scheme verification device 500 provided in the above embodiments can realize the technical solutions described in the above steel structure hoisting scheme verification method embodiments. The specific implementation principles of each module or unit can be found in the corresponding content in the above steel structure hoisting scheme verification method embodiments, which will not be repeated here.

[0116] like Figure 6 As shown, the present invention also provides an electronic device 600. The electronic device 600 includes a processor 601, a memory 602, and a display 603. Figure 6 Only some components of the electronic device 600 are shown, but it should be understood that it is not required to implement all the components shown, and more or fewer components may be implemented instead.

[0117] In some embodiments, memory 602 may be an internal storage unit of electronic device 600, such as a hard disk or memory of electronic device 600. In other embodiments, memory 602 may also be an external storage device of electronic device 600, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc. equipped on electronic device 600.

[0118] Furthermore, the memory 602 may include both internal storage units of the electronic device 600 and external storage devices. The memory 602 is used to store application software and various types of data installed on the electronic device 600.

[0119] In some embodiments, processor 601 may be a central processing unit (CPU), microprocessor, or other data processing chip, used to run program code stored in memory 602 or process data, such as the steel structure hoisting scheme verification method in this invention.

[0120] In some embodiments, display 603 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, or an OLED (Organic Light-Emitting Diode) touchscreen. Display 603 is used to display information from electronic device 600 and to display a visual user interface. Components 601-603 of electronic device 600 communicate with each other via a system bus.

[0121] In some embodiments of the present invention, when the processor 601 executes the steel structure hoisting scheme verification program in the memory 602, the following steps can be implemented: Based on the finite element model of the steel structure hoisting scheme, a hoisting simulation was performed to obtain the support reaction force and the internal forces and deformations of each member under self-weight conditions at each hoisting point. The pre-hoisting force at each hoisting point was obtained during the pre-hoisting process according to the steel structure hoisting scheme. The force difference between each hoisting point was calculated based on the pre-hoisting force and the support reaction force under self-weight conditions, and a force difference matrix was constructed. Based on the force difference matrix, forced unit displacements were applied to each hoisting point in the finite element model sequentially to obtain multiple sets of support unit reactions. A stiffness matrix based on the vertical displacement difference of the hoisting points was constructed based on these multiple sets of support unit reactions. The hoisting simulation was performed on the finite element model based on the force difference matrix and the stiffness matrix to obtain the internal forces and deformations of each member under vertical displacement difference conditions. The steel structure hoisting scheme was verified based on the internal forces and deformations of each member under self-weight conditions and under vertical displacement difference conditions.

[0122] It should be understood that when the processor 601 executes the steel structure hoisting scheme verification program in the memory 602, in addition to the functions mentioned above, it can also perform other functions, as detailed in the description of the corresponding method embodiments above.

[0123] Furthermore, the embodiments of the present invention do not specifically limit the type of electronic device 600 mentioned. Electronic device 600 can be a mobile phone, tablet computer, personal digital assistant (PDA), wearable device, laptop computer, or other portable electronic device. Exemplary embodiments of portable electronic devices include, but are not limited to, portable electronic devices running iOS, Android, Microsoft, or other operating systems. The aforementioned portable electronic device can also be other portable electronic devices, such as a laptop computer with a touch-sensitive surface (e.g., a touch panel). It should also be understood that in some other embodiments of the present invention, electronic device 600 may not be a portable electronic device, but rather a desktop computer with a touch-sensitive surface (e.g., a touch panel).

[0124] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a method for verifying steel structure hoisting schemes provided by the methods described above, the method comprising: Based on the finite element model of the steel structure hoisting scheme, a hoisting simulation was performed to obtain the support reaction force and the internal forces and deformations of each member under self-weight conditions at each hoisting point. The pre-hoisting force at each hoisting point was obtained during the pre-hoisting process according to the steel structure hoisting scheme. The force difference between each hoisting point was calculated based on the pre-hoisting force and the support reaction force under self-weight conditions, and a force difference matrix was constructed. Based on the force difference matrix, forced unit displacements were applied to each hoisting point in the finite element model sequentially to obtain multiple sets of support unit reactions. A stiffness matrix based on the vertical displacement difference of the hoisting points was constructed based on these multiple sets of support unit reactions. The hoisting simulation was performed on the finite element model based on the force difference matrix and the stiffness matrix to obtain the internal forces and deformations of each member under vertical displacement difference conditions. The steel structure hoisting scheme was verified based on the internal forces and deformations of each member under self-weight conditions and under vertical displacement difference conditions.

[0125] Those skilled in the art will understand that all or part of the processes of the methods described in the above embodiments can be implemented by a computer program instructing related hardware, and the program can be stored in a computer-readable storage medium. The computer-readable storage medium may be a disk, optical disk, read-only memory, or random access memory, etc.

[0126] The above provides a detailed description of the steel structure hoisting scheme verification method provided by the present invention. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A method for verifying steel structure hoisting schemes, characterized in that, include: Based on the finite element model of the steel structure hoisting scheme, the hoisting simulation was carried out to obtain the support reaction force under the self-weight condition of each hoisting point and the internal force and deformation of each member under the self-weight condition. Obtain the pre-lifting force at each lifting point during pre-lifting according to the steel structure lifting scheme; The force difference of each lifting point is obtained based on the pre-lifting lifting point force and the support reaction force under the self-weight of each lifting point, and a lifting point force difference matrix is ​​constructed based on the force difference of each lifting point. Based on the force difference matrix of the lifting points, the forced unit displacement of the support is applied to each lifting point in the finite element model in sequence to obtain multiple sets of support unit reactions. Based on the multiple sets of support unit reactions, a stiffness matrix based on the vertical displacement difference of the lifting points is constructed. Based on the lifting point force difference matrix and the stiffness matrix, the finite element model is used to perform a lifting simulation to obtain the internal forces and deformations of each member under the vertical displacement difference condition. This includes: multiplying the inverse of the stiffness matrix by the lifting point force difference matrix to obtain the vertical displacement difference of each lifting point; calling the finite element model to perform a lifting simulation based on the vertical displacement difference of each lifting point to obtain the internal forces and deformations of each member under the vertical displacement difference condition. The steel structure hoisting scheme is verified based on the internal forces and deformations of each member under the self-weight condition and the internal forces and deformations of each member under the vertical displacement difference condition. The process of calling the finite element model to perform hoisting simulation based on the vertical displacement difference of each hoisting point yields the internal forces and deformations of each member under the vertical displacement difference condition, including: The displacement correction coefficient is obtained based on the maximum and minimum vertical displacement differences among the vertical displacement differences at each lifting point; The vertical displacement difference of each lifting point is corrected according to the displacement correction coefficient to obtain the corrected vertical displacement difference of each lifting point; Based on the corrected vertical displacement difference of each lifting point, the lifting points in the finite element model are adjusted, and the lifting simulation is performed based on the adjusted finite element model to obtain the internal forces and deformations of each member under the vertical displacement difference condition.

2. The calculation method for steel structure hoisting scheme as described in claim 1, characterized in that, The method involves obtaining the force difference values ​​for each lifting point based on the pre-lifting force and the support reaction force under the self-weight of each lifting point, and constructing a lifting point force difference matrix based on these force differences, including: The support reaction forces under the self-weight condition of each lifting point are added together to obtain the sum of the support reaction forces under the self-weight condition. The pre-lifting lifting point forces of each lifting point are added together to obtain the sum of the pre-lifting lifting point forces. The sum of the pre-lifting lifting point forces is divided by the sum of the support reaction forces under the self-weight condition to obtain the correction coefficient of the support reaction force under the self-weight condition. The support reaction force of each lifting point under its own weight is corrected according to the support reaction force correction coefficient under its own weight to obtain the corrected support reaction force of each lifting point under its own weight. The force difference between each lifting point is obtained by subtracting the support reaction force under the corrected self-weight condition from the pre-lifting force of each lifting point, and a lifting point force difference matrix is ​​constructed based on the force difference between each lifting point.

3. The calculation method for steel structure hoisting scheme as described in claim 1, characterized in that, The calculation of the steel structure hoisting scheme based on the internal forces and deformations of each member under the self-weight condition and the internal forces and deformations of each member under the vertical displacement difference condition includes: The internal forces and deformations of each member under the self-weight condition are corrected according to the support reaction force correction coefficient under the self-weight condition, so as to obtain the corrected internal forces and deformations of each member under the self-weight condition. The corrected internal forces and deformations of each member under the self-weight condition and the internal forces and deformations of each member under the vertical displacement difference condition are linearly superimposed to obtain the true stress ratio and deflection of each member. The steel structure hoisting scheme is verified based on the actual stress ratio and deflection of each member.

4. The steel structure hoisting scheme verification method as described in claim 3, characterized in that, The verification of the steel structure hoisting scheme based on the actual stress ratio and deflection of each member includes: The stress ratio and deflection limits of the preset members are compared with the actual stress ratio and deflection of each member to obtain the verification results of each member. When the actual stress ratio and deflection of each member are less than or equal to the stress ratio limit and deflection limit of the member, the steel structure hoisting scheme is verified. If the actual stress ratio or deflection of each member is greater than the stress ratio limit or deflection limit of the member, the steel structure hoisting scheme fails the verification.

5. The steel structure hoisting scheme verification method as described in claim 4, characterized in that, When the actual stress ratio or deflection of each member exceeds the stress ratio limit or deflection limit, the steel structure hoisting scheme fails the verification. The procedure further includes: Obtain the number of members that failed the verification; When the number of members that fail the verification is less than a preset threshold, the members that fail the verification are reinforced, and the steel structure hoisting scheme verification is passed. When the number of members that fail the verification is greater than or equal to a preset threshold, the steel structure hoisting scheme is adjusted, a new steel structure hoisting scheme is generated, and the new steel structure hoisting scheme is verified until the new steel structure hoisting scheme passes the verification.

6. A steel structure hoisting scheme verification device, characterized in that, The steel structure hoisting scheme verification device includes: The simulated hoisting module is used to simulate hoisting based on the finite element model of the steel structure hoisting scheme, and to obtain the support reaction force under the self-weight condition of each hoisting point and the internal force and deformation of each member under the self-weight condition. The pre-lifting module is used to obtain the pre-lifting force at each lifting point when pre-lifting according to the steel structure lifting scheme. The simulated hoisting module is also used to obtain the force difference of each hoisting point based on the pre-hoisting hoisting point force and the support reaction force under the self-weight of each hoisting point, and to construct a hoisting point force difference matrix based on the force difference of each hoisting point. The simulated hoisting module is also used to apply forced unit displacement of the support to each hoisting point in the finite element model in sequence based on the hoisting point force difference matrix, to obtain multiple sets of support unit reaction forces, and to construct a stiffness matrix based on the vertical displacement difference of the hoisting points based on the multiple sets of support unit reaction forces. The hoisting verification module is used to perform hoisting simulation on the finite element model based on the hoisting point force difference matrix and the stiffness matrix to obtain the internal forces and deformations of each member under the vertical displacement difference condition. This includes: multiplying the inverse of the stiffness matrix by the hoisting point force difference matrix to obtain the vertical displacement difference at each hoisting point; and calling the finite element model to perform hoisting simulation based on the vertical displacement difference at each hoisting point to obtain the internal forces and deformations of each member under the vertical displacement difference condition. The hoisting verification module is also used to verify the steel structure hoisting scheme based on the internal forces and deformations of each member under the self-weight condition and the internal forces and deformations of each member under the vertical displacement difference condition. The process of calling the finite element model to perform hoisting simulation based on the vertical displacement difference of each hoisting point yields the internal forces and deformations of each member under the vertical displacement difference condition, including: The displacement correction coefficient is obtained based on the maximum and minimum vertical displacement differences among the vertical displacement differences at each lifting point; The vertical displacement difference of each lifting point is corrected according to the displacement correction coefficient to obtain the corrected vertical displacement difference of each lifting point; Based on the corrected vertical displacement difference of each lifting point, the lifting points in the finite element model are adjusted, and the lifting simulation is performed based on the adjusted finite element model to obtain the internal forces and deformations of each member under the vertical displacement difference condition.

7. An electronic device, characterized in that, Including memory and processor, among which, The memory is used to store programs; The processor, coupled to the memory, is used to execute the program stored in the memory to implement the steps of the steel structure hoisting scheme verification method as described in any one of claims 1 to 5.

8. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the steel structure hoisting scheme verification method as described in any one of claims 1 to 5.

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