A method and device for determining monitoring points for mechanical transformation during structural construction unloading.

Abstract

This invention discloses a method and apparatus for determining monitoring points in a structural unloading mechanics system during construction, relating to the field of civil engineering technology. The method for determining monitoring points includes the following steps: analyzing the force transmission path after the transformation of the mechanics system, calculating the influence coefficient of component response on structural configuration; identifying important components based on the influence coefficient; and analyzing and determining the structural monitoring points for construction unloading using the sensitivity of structural configuration to changes in the state of the important components. This invention uses the influence coefficient of component response on structural configuration during the transformation of the mechanics system to determine important components for construction unloading, and uses the sensitivity of structural configuration to changes in the state of important components to screen monitoring points, thus determining the monitoring points for the construction unloading stage and achieving optimized layout of monitoring points.

Description

Technical Field

[0001] This application relates to the field of civil engineering technology, specifically to a method and apparatus for determining monitoring points for mechanical transformation during structural construction unloading. Background Technology

[0002] In the early design and optimization phase of a structure, all structures and loads are typically applied all at once. However, during actual construction, considering the structural weight and early deformations caused by construction loads, temporary supports, hangers, and pre-camber are used to achieve the ideal structural configuration. This differs from the design concept, where the structure's own weight is transferred to the ground via vertical supporting members. During construction, the structure's weight and construction loads are transferred to the foundation through temporary supports and completed vertical members. These temporary supports are not part of the structure and are therefore removed and unloaded according to the construction schedule and plan. This process involves a structural mechanics transformation characterized by reduced boundary constraints and increased geometric nonlinearity.

[0003] Temporary supports are used as auxiliary components during structural construction. In the early stages of construction, these supports transfer vertical loads and constrain the structural configuration. Once the structure reaches the desired configuration, the supports are unloaded, leading to a transformation of the structural mechanics system. However, during this transformation, accumulated structural deformation and redistribution of internal forces cause excessive deformation. Furthermore, support unloading schemes developed based on construction experience or finite element model analysis do not consider the differences in overall stiffness and load between the construction and design states, and therefore cannot provide deformation redundancy reserves for unforeseen circumstances during construction.

[0004] In related technologies, one method to determine monitoring points is to analyze the structural components with the highest stress during construction unloading using a finite element model. This method only considers the extreme values ​​of stress and ignores the changes in component stress during construction. Another method is to select components that are prone to exceeding the stress range during construction based on construction experience. However, this method cannot cope with the stress changes in complex structures. Summary of the Invention

[0005] To at least partially overcome the problems existing in related technologies, this application provides a method and apparatus for determining monitoring points for structural construction unloading mechanical transformation.

[0006] In a first aspect, the present invention provides a method for determining monitoring points of a structural construction unloading mechanics system, comprising the following steps:

[0007] S10: Analyze the force transmission path after the transformation of the mechanical system and calculate the influence coefficient of the component response on the structural configuration.

[0008] S20: Determine the important components based on the influence coefficient;

[0009] S30: Analyze and determine the structural monitoring points for construction unloading by using the sensitivity of the structural configuration to changes in the state of the important components.

[0010] Furthermore, the mechanical system is transformed into the cumulative structural deformation and changes in degrees of freedom caused by unloading.

[0011] Furthermore, the force transmission path is the path through which the structure's self-weight and construction load are transferred to the foundation before and after the construction support is removed.

[0012] Furthermore, the influence coefficient is the ratio of the structural configuration increment to the component response increment.

[0013] Furthermore, based on the influence coefficient, the components closely related to the structural configuration are identified as the important components.

[0014] Furthermore, the key components are determined by evaluating the correlation between changes in component response and support reaction forces.

[0015] Furthermore, the sensitivity analysis includes reliability analysis of structural construction monitoring and distribution parameter analysis of the stiffness of important components;

[0016] The reliability of the construction monitoring is the conditional probability that the structure meets the deformation limit requirements under specific construction conditions.

[0017] The distribution parameters of the stiffness of the important components are the distribution parameters of the elastic modulus of the important components under the influence of construction error factors.

[0018] Furthermore, the determination of the structural monitoring points for construction unloading is accomplished through finite element model analysis.

[0019] Furthermore, the monitoring points are determined by evaluating the sensitivity of the structural configuration to changes in the stiffness of important components.

[0020] Secondly, the present invention provides a device for determining monitoring points of a structural construction unloading mechanics system, comprising:

[0021] The influence coefficient calculation module is used to analyze the force transmission path after the transformation of the mechanical system and calculate the influence coefficient of the component response on the structural configuration.

[0022] The important component determination module is used to determine important components based on the influence coefficient.

[0023] The monitoring point analysis module is used to analyze and determine the structural monitoring points for construction unloading by using the sensitivity of the structural configuration to changes in the state of the important components.

[0024] The technical solutions provided by the embodiments of the present invention have the following beneficial effects:

[0025] In this embodiment of the invention, after the mechanical system transformation, the influence coefficient of the component response on the structural configuration in the force transmission path is first calculated, and the important components in the construction process are determined based on the influence coefficient; then, the sensitivity of the structural configuration to the state changes of the important components is obtained, and the sensitivity is used to determine the structural monitoring points for construction unloading, thereby ensuring the effectiveness of the construction unloading monitoring points and realizing the optimized layout of the monitoring points.

[0026] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0028] Figure 1 This is a flowchart illustrating a method for determining monitoring points in a structural construction unloading mechanics system according to an embodiment of the present invention.

[0029] Figure 2 This is a structural block diagram of a monitoring point determination device for a structural construction unloading mechanics system according to an embodiment of the present invention.

[0030] The attached figures are labeled as follows:

[0031] Influence coefficient calculation module 100; Important component identification module 200; Monitoring point analysis module 300. Detailed Implementation

[0032] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of methods and apparatus consistent with some aspects of this application as detailed in the appended claims.

[0033] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0034] Example 1

[0035] Figure 1 This is a flowchart illustrating the determination of monitoring points for a structural construction unloading mechanics system, as provided in an embodiment of the present invention. The method may include the following steps:

[0036] Step S10: Analyze the force transmission path after the transformation of the mechanical system and calculate the influence coefficient of the component response on the structural configuration.

[0037] In this embodiment, the mechanical system is transformed into the cumulative structural deformation and changes in degrees of freedom caused by unloading. The force transmission path is the path through which the structural self-weight and construction load are transferred to the foundation before and after the construction supports are removed.

[0038] The unloading of the structure was simulated according to the actual construction plan. During the unloading process, the cumulative deformation and changes in the degrees of freedom of the structure can cause the redistribution of internal forces in the structure.

[0039] The errors during construction are mainly caused by large geometric deformations and changes in degrees of freedom, but the structural materials remain within their elastic range during this process. Before the main structure is unloaded, the equilibrium equations are:

[0040] K 0 U 0 =P 0

[0041] In the formula, K 0 P represents the overall structural stiffness matrix before the first batch of unloading; 0 This refers to the overall load before the first batch of unloading; U 0 This represents the overall displacement before the first batch of items were unloaded.

[0042] After the first unloading stage, the supports detach from the main structure, at which point the degrees of freedom of the overall stiffness matrix increase. For the overall stiffness matrix K before unloading... 0 Subtracting the stiffness coefficient affected by the detachment from the support, the equilibrium equation is:

[0043] (K 0 -K 1 )ΔU 1 =ΔP 1

[0044] In the formula, K 1 The stiffness coefficient of the first batch of removed supports relative to the remaining structure; ΔU 1 The structural configuration increment after the first batch of unloading; ΔP 1 This represents the structural load increment after the first batch of unloading.

[0045] And so on, after the unloading of the w-th stage of construction is completed, the equilibrium equation of the structure is:

[0046] (K 0 -K 1 -…-K k -…-K w )ΔU w =ΔP w

[0047] In the formula, K k ΔU is the stiffness coefficient of the remaining structure relative to the kth batch of removed supports; w ΔP represents the structural configuration increment after the wth batch of unloading; w This represents the structural load increment after the wth batch of unloading.

[0048] From the above, it can be concluded that during the construction and unloading process of large structures, the final structural deformation originates from the cumulative deformation at each unloading stage, which can be expressed as:

[0049]

[0050] In the formula, ΔU k This represents the overall structural displacement increment during the k-th unloading stage.

[0051] Changes in degrees of freedom and geometric nonlinearity during construction unloading have a significant impact on construction monitoring. The equilibrium equations for the component under large deformation are as follows:

[0052]

[0053] In the formula, Let be the element tangent stiffness matrix of the k-th mechanical system; Let ΔP be the displacement increment of the element node during the transformation process of the k-th mechanical system; and ΔP k This represents the component load increment under the k-th mechanical system.

[0054] Tangent stiffness matrix of a component under large geometric deformation It consists of the elastic stiffness matrix, initial stress stiffness matrix, and initial strain stiffness matrix of the component, and is represented as follows:

[0055]

[0056] In the formula, Let be the elastic stiffness matrix of the component under the k-th mechanical system; Let be the initial stress stiffness matrix of the component under the k-th mechanical system; and Let be the initial strain stiffness matrix of the component under the k-th mechanical system.

[0057] Step S20: Determine the important components based on the influence coefficient.

[0058] In this embodiment, the influence coefficient is the ratio of the structural configuration increment to the component response increment. In step S10, during the redistribution of internal forces in the structure, since the changes in internal forces of important components along the force transmission path maintain a high correlation with the changes in internal forces of supports, important components are determined based on the correlation between component internal forces and structural configuration.

[0059] Furthermore, step S20 specifically includes: determining the components closely related to the structural configuration as the important components based on the influence coefficient.

[0060] The method for determining key components includes calculating correlation coefficients and solving the influence matrix. The correlation coefficients are the correlation coefficients between component response and structural configuration changes under different structural mechanics systems; the method for solving the influence matrix is ​​to compose the influence matrix by combining the influence coefficients between component response and structural configuration.

[0061] During implementation, the configuration u of the structure determined in the design phase t :

[0062]

[0063] In the formula, Let be the configuration of the i-th node determined during the structural design phase; n is the number of structural nodes.

[0064] The main method for monitoring construction unloading is to control the unloading distance of the construction supports at each step, allowing the main structure to gradually descend until it reaches the designed configuration. The ideal descent distance of the construction supports at each unloading step under proportional unloading is defined as follows:

[0065]

[0066] In the formula, The position of the node connected to the i-th construction support is determined during the design phase; w is the number of construction unloading steps.

[0067] The structural configuration Δu is caused by the descent of construction supports, following a w-step equidistant unloading process without any transformation of the structural mechanics system.

[0068]

[0069] However, due to the transformation of the structural mechanics system, even the same unloading distance will result in different structural configuration changes under different mechanical system states. The nodal configuration increment during the k-th mechanical system transformation process...

[0070]

[0071] In the formula, This represents the actual position of the i-th node in the (k+1)-th mechanical system. This represents the actual position of the i-th node within the k-th mechanical system.

[0072] At this point, the actual configuration change Δu of the structure during the kth mechanical system transformation process is... k :

[0073]

[0074] In the formula, Let represent the configuration change of the i-th node in the k-th mechanical system.

[0075] During the transformation between different mechanical systems, due to the correlation between component response and structural configuration, some component responses and structural configurations have an influence relationship. In the k-th mechanical system state, the associated component responses...

[0076]

[0077] In the formula, d represents the i-th response value under the k-th mechanical system; d represents the number of associated components.

[0078] The response increment of the associated components during the transformation process of the kth mechanical system

[0079]

[0080] In the formula, This represents the response of the i-th associated component in the (k+1)-th mechanical system. Let be the response of the i-th associated component in the k-th mechanical system.

[0081] The increment of the response of the associated components during the transition from the k-th mechanical system to the next mechanical system

[0082]

[0083] During the transformation of the kth mechanical system, the influence coefficient between the response increment of the j-related component and the configuration increment of the i-node is...

[0084]

[0085] When the associated component responds When changes occur, the structural configuration changes Δu k :

[0086]

[0087] The influence matrix A of the response of the associated components on the structural configuration under the kth mechanical system is... k :

[0088]

[0089] In the formula, Let be the influence coefficient of the response increment of component j and the configuration increment of component i under the k-th mechanical system.

[0090] However, the dimensions and influence coefficients of the influence matrix corresponding to the response are different under different mechanical systems. The set A of influence matrices under different mechanical systems is as follows:

[0091] A={A 1 A 2 ,…,A k ,…,A m}

[0092] In the formula, A k The influence matrix under the k-th construction mechanics system; m is the number of structural mechanics systems.

[0093] Therefore, structural configuration monitoring can be achieved using the influence matrix and the responses of associated components. During the construction unloading phase, the initial structural configuration affects the final state of the structure. The purpose of construction monitoring is to make the final state of the structure as close as possible to the design state. Finally, after m construction unloading cycles leading to structural mechanical system transformations, the final structural configuration u is:

[0094]

[0095] The influence matrix can be used to represent the influence relationship between the response of related components and the structural configuration. Reasonable construction unloading should take into account the change of influence coefficient caused by the transformation of the mechanical system. The construction control of the structure can be accurately reflected by the response of related components.

[0096] The key components can be determined by evaluating the correlation between changes in component response and support reaction forces.

[0097] Step S30: Analyze and determine the structural monitoring points for construction unloading by using the sensitivity of the structural configuration to changes in the state of the important components.

[0098] In this embodiment, the sensitivity analysis includes reliability analysis of structural construction monitoring and distribution parameter analysis of the stiffness of important components.

[0099] The reliability of the construction monitoring is the conditional probability that the structure meets the deformation limit requirements under specific construction conditions.

[0100] The distribution parameters of the stiffness of the important components are the distribution parameters of the elastic modulus of the important components under the influence of construction error factors.

[0101] The sensitivity analysis is preferably the derivative of the structural configuration reliability with respect to the stiffness distribution parameters of the component.

[0102] During implementation, the structural configuration in the pre-construction design and feasibility study phase is constrained. Under ideal design conditions, the structural configuration u under the k-th mechanical system is... k :

[0103]

[0104] In the formula, This refers to the configuration of the i-th node in the k-th mechanical system without considering errors.

[0105] Under the influence of various factors, the structural response u k' for

[0106]

[0107] For a construction structure, the probability of structural failure is expressed as:

[0108]

[0109] In the formula, u represents the maximum value of the structural configuration under the k-th mechanical system. limit The structural configuration limits are determined during the construction plan development.

[0110] Among them, the maximum value of the structural configuration

[0111]

[0112] Different component responses have varying impacts on different node configurations. Therefore, monitoring points need to be based on the correlation between component responses and structural configurations. During the transformation of the mechanical system, the component response x... i :

[0113]

[0114] In the formula, is the structural response value of the i-th structure under the k-th mechanical system; m is the number of structural mechanical systems.

[0115] Structure j node configuration u j for

[0116]

[0117] In the formula, Let be the configuration value of the j-th node in the k-th mechanical system.

[0118] x i and u j correlation coefficient

[0119]

[0120] In the formula, For u j The mean; For x i The mean.

[0121] Large cantilever and long-span structures have numerous components. Calculating the correlation coefficients between all components and the structural configuration under different mechanical systems would result in a large computational load and numerous interference terms. The response matrix x of the associated components can be formed from the responses of d related components to the structure for sensitivity analysis. r :

[0122]

[0123] In the formula, Let be the response of the i-th associated component in the k-th mechanical system.

[0124] The selection of monitoring points was completed through finite element model analysis. The process involved setting the mean and standard deviation of the elastic modulus of each associated component, randomly sampling the elastic modulus of the components from the distribution defined by the mean and standard deviation, calculating the structural configuration corresponding to different elastic moduli, and solving for the sensitivity of structural configuration changes to elastic modulus changes. The distribution parameters s of the elastic moduli of the d components corresponding to the response matrix of the associated components are then determined. E :

[0125]

[0126] In the formula, Let be the elastic modulus distribution parameter of the i-th associated component.

[0127] The sensitivity solution S of the corresponding structural configuration E :

[0128]

[0129] In the formula, Let be the configuration sensitivity corresponding to the standard deviation of the elastic modulus of the i-th associated component.

[0130] The calculated sensitivities are sorted, and the top g distributed parameters that have a significant impact on the structural configuration are selected. The corresponding component responses form a new monitoring response matrix x:

[0131]

[0132] In the formula, This represents the i-th monitoring response under the k-th mechanical system.

[0133] The monitoring points are determined by assessing the sensitivity of the structural configuration to changes in the stiffness of important components.

[0134] The method for determining the monitoring points can be to sort the structural configuration's sensitivity to component stiffness from largest to smallest.

[0135] After the mechanical system transformation, the embodiments of the present invention first calculate the influence coefficient of the component response on the structural configuration in the force transmission path, and determine the important components in the construction process based on the influence coefficient; then obtain the sensitivity of the structural configuration to the state changes of the important components, and use the sensitivity to determine the structural monitoring points for construction unloading, thereby ensuring the effectiveness of the construction unloading monitoring points and realizing the optimized layout of the monitoring points.

[0136] Example 2

[0137] Embodiments of the present invention also provide a device for determining monitoring points of a structural construction unloading mechanics system, which can be applied to a method for determining monitoring points of a structural construction unloading mechanics system as described in the above embodiments. Wherein, as Figure 2 As shown, the device mainly includes an influence coefficient calculation module 100, an important component determination module 200, and a monitoring point analysis module 300. Wherein:

[0138] The influence coefficient calculation module 100 is used to analyze the force transmission path after the mechanical system transformation and calculate the influence coefficient of the component response on the structural configuration.

[0139] The important component determination module 200 is used to determine important components based on the influence coefficient.

[0140] The monitoring point analysis module 300 is used to analyze and determine the structural monitoring points for construction unloading by using the sensitivity of the structural configuration to changes in the state of the important components.

[0141] After the mechanical system transformation, this embodiment of the invention first calculates the influence coefficient of the component response on the structural configuration through the influence coefficient calculation module 100, and then uses the important component determination module 200 to determine the important components in the construction process based on the influence coefficient; then, the monitoring point analysis module 300 obtains the sensitivity of the structural configuration to the state changes of the important components, and uses the sensitivity to determine the structural monitoring points for construction unloading, thereby ensuring the effectiveness of the construction unloading monitoring points and realizing the optimized layout of the monitoring points.

[0142] Regarding the apparatus in the above embodiments, the specific steps for each module to perform operations have been described in detail in the embodiments related to the method, and will not be elaborated further here. Each module in the above-described device for determining monitoring points of a structural construction unloading mechanics system can be implemented entirely or partially through software, hardware, or a combination thereof. Each module can be embedded in or independent of the processor in a computer device in hardware form, or stored in the memory of a computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0143] In summary, the present invention provides a method and apparatus for determining monitoring points of a structural construction unloading mechanics system. After the mechanics system is transformed, the influence coefficient of the component response on the structural configuration in the force transmission path is first calculated, and important components in the construction process are determined based on the influence coefficient. Then, the sensitivity of the structural configuration to the state changes of important components is obtained, and the sensitivity is used to determine the structural monitoring points for construction unloading, thereby ensuring the effectiveness of the construction unloading monitoring points and achieving optimized layout of the monitoring points.

[0144] It is understood that the same or similar parts in the above embodiments can be referred to each other, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0145] It should be noted that in the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "a plurality of" means at least two.

[0146] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this application pertain.

[0147] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0148] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0149] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0150] The storage media mentioned above can be read-only memory, disk, or optical disk, etc.

[0151] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0152] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A method for determining monitoring points of a structural construction unloading mechanics system, characterized in that, Includes the following steps: S10: Analyze the force transmission path after the transformation of the mechanical system and calculate the influence coefficient of the component response on the structural configuration. The force transmission path after the transformation of the analytical mechanics system is the cumulative structural deformation and change in degrees of freedom caused by the transformation of the mechanics system to unloading; the force transmission path is the path through which the structural self-weight and construction load are transferred to the foundation before and after the construction support is removed. The influence coefficient is the ratio of the structural configuration increment to the component response increment; S20: Determine important components based on the influence coefficient; S30: Analyze and determine the structural monitoring points for construction unloading by using the sensitivity of the structural configuration to changes in the state of the important components; The method for determining the important components based on the influence coefficient includes: calculating the correlation coefficient and solving the influence matrix; the correlation coefficient is the correlation coefficient between the component response and structural configuration change under different structural mechanics systems; the method for solving the influence matrix is ​​to form an influence matrix composed of the influence coefficients between the component response and the structural configuration. The analysis used to determine the structural monitoring points for construction unloading by analyzing the sensitivity of structural configuration to changes in the state of the important components includes: Reliability analysis of structural construction monitoring and distribution parameter analysis of stiffness of important components; the reliability of construction monitoring is the conditional probability that the structure meets the deformation limit requirements under specific construction conditions, and the distribution parameter of stiffness of important components is the distribution parameter of elastic modulus of important components under the influence of construction error factors.

2. The method for determining monitoring points of the structural construction unloading mechanics system according to claim 1, characterized in that, The key components were determined by evaluating the correlation between changes in component response and support reaction force.

3. The method for determining monitoring points of the structural construction unloading mechanics system according to claim 1, characterized in that, Sensitivity analysis includes reliability analysis of structural construction monitoring and distribution parameter analysis of stiffness of important components; The reliability of the construction monitoring is the conditional probability that the structure meets the deformation limit requirements under given construction conditions. The distribution parameters of the stiffness of the important components are the distribution parameters of the elastic modulus of the important components under the influence of construction error factors.

4. The method for determining monitoring points of the structural construction unloading mechanics system according to claim 1, characterized in that, The determination of the structural monitoring points for construction unloading was accomplished through finite element model analysis.

5. The method for determining monitoring points of the structural construction unloading mechanical system according to claim 1, characterized in that, The monitoring points were determined by assessing the sensitivity of the structural configuration to changes in the stiffness of important components.

6. A device for determining monitoring points of a structural construction unloading mechanics system, applied to the method for determining monitoring points of the structural construction unloading mechanics system as described in claim 1, characterized in that, The device includes: The influence coefficient calculation module is used to analyze the force transmission path after the transformation of the mechanical system and calculate the influence coefficient of the component response on the structural configuration. The important component determination module is used to determine important components based on the influence coefficient. The monitoring point analysis module is used to analyze and determine the structural monitoring points for construction unloading by using the sensitivity of the structural configuration to changes in the state of the important components.

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