CN111859745A - Method, device and equipment for acquiring response distribution of steel reinforced concrete structure - Google Patents
Method, device and equipment for acquiring response distribution of steel reinforced concrete structure Download PDFInfo
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Abstract
The invention relates to a method, a device and equipment for acquiring structural response distribution of section steel concrete, which are used for determining a first mapping relation between section steel stress and internal force, determining a second mapping relation between the section steel concrete stress and the internal force according to the first mapping relation, determining a third mapping relation between shear stress and torque caused by section steel concrete torsion based on the preset structural size of the section steel concrete, and determining the section internal force of the section steel concrete according to the second mapping relation, the third mapping relation and pre-acquired stress monitoring data; and determining the load of the preset loading point based on the force balance principle according to the internal force of the section steel concrete and the position relation between the preset loading point and the section so as to obtain the response distribution of the section steel concrete structure. The method for acquiring the internal force of the section of the steel reinforced concrete is established based on the monitoring data, the stress distribution of the steel reinforced concrete can be accurately acquired, and the deviation of a simulation result and the actual response distribution is effectively reduced.
Description
Technical Field
The invention relates to the technical field of monitoring data processing of civil engineering structures, in particular to a method, a device and equipment for acquiring response distribution of a steel reinforced concrete structure.
Background
The steel reinforced concrete truss plays an important role in high-rise buildings, serves as a structural conversion layer, has the function of increasing structural rigidity in the using stage of the waist truss and the outrigger truss, and can meet the requirements of building functions. In the construction stage, because the steel reinforced concrete truss structure is adopted, the steel reinforced concrete is firstly welded and assembled in the construction, and then the steel bars are bound and the concrete is poured. Meanwhile, the truss is used as an statically indeterminate structure, the stress of the truss is complex, the design is conservative, uncertain influence is easily generated, and due to the influence of the construction environment, the structure is stressed too much in the construction process, so that certain potential safety hazard is generated. Therefore, it is necessary to monitor the structural health of the steel reinforced concrete truss, wherein the stress of each part of the truss is a very important part.
In the related technology, one method is based on a monitoring technology of a sensor arrangement position, monitors a theoretical key position of the steel reinforced concrete structure, researches the stress value of the point of the steel reinforced concrete structure under different construction schedules, and evaluates the safety of the steel reinforced concrete structure, and the method only relates to the research of stress data of a limited measuring point and does not relate to the acquisition of response distribution; the other method is based on the structure response distribution acquisition of finite element simulation, which mainly uses the finite element analysis to simulate the structure to acquire the response distribution.
Therefore, the problems of limited sensor arrangement, simplified model, ideal working condition setting and the like exist in response acquisition of the steel reinforced concrete structure, and deviation exists between the response acquisition and the actual response distribution.
Disclosure of Invention
In view of the above, the present invention provides a method, an apparatus and a device for acquiring a response distribution of a steel reinforced concrete structure, so as to overcome the problem that the response of the steel reinforced concrete structure is deviated from the actual response distribution at present.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for acquiring response distribution of a steel reinforced concrete structure comprises the following steps:
determining a first mapping relation between section stress and internal force of the section steel;
determining a second mapping relation between section stress and internal force of the steel reinforced concrete according to the first mapping relation;
determining a third mapping relation between shear stress and torque caused by the torsion of the section steel concrete based on the preset structural size of the section steel concrete;
determining the section internal force of the section steel concrete according to the second mapping relation, the third mapping relation and the pre-acquired stress monitoring data; the stress monitoring data is obtained from a stress sensor arranged at a preset position;
Determining the load of a preset loading point based on a force balance principle according to the internal force of the section of the steel reinforced concrete and the position relation between the preset loading point and the section;
and generating a solid model according to a preset construction size, and inputting the load of the preset loading point into the solid model as a target load so as to obtain the response distribution of the steel reinforced concrete structure.
Further, in the method described above, the first mapping relationship includes a mapping relationship between shear stress and shear force of the section steel;
the determining of the first mapping relation between section stress and internal force of the section steel comprises the following steps:
determining a first mapping coefficient of section stress and internal force of the section steel;
and correcting a preset shear stress formula based on the first mapping coefficient to obtain the mapping relation between the shear stress and the shearing force of the section steel.
Further, the method for determining the first mapping relationship between section stress and internal force of the section steel comprises the following steps:
establishing a finite element solid model of the section steel based on the structural size of the section steel;
and fitting the linear concentration force applied to the loading end of the finite element solid model of the section steel and the corresponding stress value, and taking the numerical value obtained when the order is 1 as the first mapping coefficient.
Further, the method described above, wherein determining a second mapping relationship between section stress and internal force of the steel reinforced concrete based on the first mapping relationship, comprises:
determining a second mapping coefficient of the section stress and the internal force of the section steel concrete;
and correcting the first mapping relation based on the second mapping coefficient to obtain the corrected second mapping relation.
Further, the method described above, wherein determining the second mapping coefficient of section stress and internal force of the steel reinforced concrete comprises:
establishing a finite element solid model of the section steel concrete based on the structural size of the section steel concrete;
applying a preset group of linear concentrated force and bending moment to the section core of the loading end of the finite element solid model of the section steel concrete to obtain corresponding finite element section steel internal force and finite element section steel concrete internal force;
and fitting the finite element section steel internal force and the finite element section steel concrete section internal force, and taking the numerical value obtained when the order is 1 as the second mapping coefficient.
Further, the method described above, wherein the determining a third mapping relationship between shear stress and torque caused by torsion of the steel reinforced concrete based on the preset structural size of the steel reinforced concrete comprises:
Fitting a linear torque and a corresponding stress value applied to a loading end of the finite element solid model of the section steel concrete, and taking a numerical value obtained when the order is 1 as a section steel concrete torsion coefficient;
and determining the third mapping relation between the shear stress and the torque caused by the torsion of the steel reinforced concrete according to the torsion coefficient of the steel reinforced concrete.
Further, in the method described above, the stress sensor is a plurality of sensors arranged along the X direction, the Y direction, and the Z direction, respectively, with reference to a predetermined cross-sectional coordinate system.
Further, the method for determining the load of the preset loading point based on the force balance principle according to the cross-section internal force of the steel reinforced concrete and the position relationship between the preset loading point and the cross section comprises the following steps:
acquiring an integral coordinate system of the section steel concrete;
and according to the position relation between the preset loading point and the section and the force balance principle, converting the section internal force of the section steel concrete into the load of the preset loading point based on the integral coordinate system.
The invention also provides a device for acquiring the response distribution of the steel reinforced concrete structure, which comprises a determining module and an acquiring module;
The determining module is used for determining a first mapping relation between section stress and internal force of the section steel, determining a second mapping relation between section stress and internal force of the section steel concrete according to the first mapping relation, determining a third mapping relation between shear stress and torque caused by torsion of the section steel concrete based on a preset structural size of the section steel concrete, and determining the section internal force of the section steel concrete according to the second mapping relation, the third mapping relation and pre-acquired stress monitoring data; the stress monitoring data are acquired from a stress sensor arranged at a preset position, and the load of a preset loading point is determined based on a force balance principle according to the internal force of the section of the steel reinforced concrete and the position relation between the preset loading point and the section;
the obtaining module is used for generating a solid model according to a preset construction size, and inputting the load of the preset loading point into the solid model as a target load so as to obtain the response distribution of the steel reinforced concrete structure.
The invention also provides a device for acquiring the response distribution of the steel reinforced concrete structure, which comprises a processor and a memory, wherein the processor is connected with the memory:
The processor is used for calling and executing the program stored in the memory;
the memory is used for storing the program, and the program is at least used for executing the acquisition method of the response distribution of the steel reinforced concrete structure.
The invention discloses a method, a device and equipment for acquiring the structural response distribution of a section steel concrete structure, which are used for determining a first mapping relation between section steel stress and internal force, determining a second mapping relation between the section steel concrete stress and the internal force according to the first mapping relation, determining a third mapping relation between shear stress and torque caused by section steel concrete torsion based on the preset structural size of the section steel concrete, and determining the section internal force of the section steel concrete according to the second mapping relation, the third mapping relation and pre-acquired stress monitoring data; the stress monitoring data are acquired from a stress sensor arranged at a preset position, the load of a preset loading point is determined based on the force balance principle according to the internal force of the section of the steel reinforced concrete and the position relation between the preset loading point and the section, a solid model is generated according to a preset construction size, and the load of the preset loading point is used as a target load and is input into the solid model to acquire the response distribution of the steel reinforced concrete structure. The method for acquiring the internal force of the section of the steel reinforced concrete is established based on the monitoring data, so that the stress distribution of the steel reinforced concrete can be accurately acquired, the reliability is high, and the deviation of a simulation result and the actual response distribution is effectively reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart provided by an embodiment of the method for obtaining the response distribution of the steel reinforced concrete structure according to the present invention;
FIG. 2 is a cross-sectional view of an I-beam provided by an embodiment of the method for obtaining the response distribution of a steel reinforced concrete structure according to the present invention;
FIG. 3 is a stress extraction point distribution diagram of a mapping relationship between shear stress and shear force of the section steel provided by an embodiment of the method for acquiring response distribution of a section steel concrete structure according to the invention;
FIG. 4 is a first mapping relationship stress extraction point distribution diagram provided by an embodiment of the method for obtaining a response distribution of a steel reinforced concrete structure according to the present invention;
FIG. 5 is a stress extraction point distribution diagram of a second mapping relationship provided by an embodiment of the method for obtaining a response distribution of a steel reinforced concrete structure according to the present invention;
FIG. 6 is a diagram of a stress sensor arrangement provided by one embodiment of the method for acquiring the response distribution of a steel reinforced concrete structure according to the present invention;
FIG. 7 is a schematic diagram of the monitoring section and the position of the loading point provided by an embodiment of the method for acquiring the response distribution of the steel reinforced concrete structure of the present invention;
FIG. 8 is a schematic structural diagram provided by an embodiment of the apparatus for acquiring a response profile of a steel reinforced concrete structure according to the present invention;
fig. 9 is a schematic structural diagram provided by an embodiment of the apparatus for acquiring the response distribution of the steel reinforced concrete structure according to the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
FIG. 1 is a flow chart of an embodiment of the method for obtaining the response distribution of the steel reinforced concrete structure according to the present invention. Referring to fig. 1, the present embodiment may include the following steps:
S101, determining a first mapping relation between section stress and internal force of the section steel.
In the present embodiment, an i-shaped steel is taken as an example for explanation.
Specifically, a section coordinate system based on the I-shaped section of the I-shaped steel is established, the direction of a flange in the I-shaped section is taken as a y-axis, the direction of a web in the I-shaped section is taken as a z-axis, and the direction perpendicular to the I-shaped section is taken as an x-axis, so that an orthogonal coordinate system is established. Fig. 2 is a cross-sectional view of an i-section steel provided by an embodiment of the method for obtaining the response distribution of the steel reinforced concrete structure of the present invention, as shown in fig. 2, a stress calculation formula of the cross section of the i-section steel is as follows:
in the formula: sigmax1In the x direction, axial force FxThe resulting axial stress (Pa);
σx2in the x direction, bending moment MyThe stress (Pa) generated;
σx3in the x direction, bending moment MzThe stress (Pa) generated;
τzin the z direction, shear force FzThe stress (Pa) generated;
τyin the y direction, shear force FyThe stress (Pa) generated;
Fx-x-direction axial force (N);
Fy-y directionA shear force (N);
Fz-y-direction shear (N);
My-a y-direction bending moment (N · m);
Mz-a bending moment in z direction (N · m);
a-area of the cross section (m)2)；
IySection moment of inertia of the y-axis (m)4)；
IzThe second moment of area of the z-axis (m)4)；
SyArea moment of the y-axis (m) 3)；
b-cross-sectional width in the y-direction (m);
h-cross-sectional width in the z-direction (m);
-the thickness (m) of the flanges;
d-thickness of web (m);
eta is the distance (m) from the upper point of the flange to the end part of the flange.
Wherein the internal force Fx、My、MzAnd FzThe mapping situation between the internal force and the stress can be effectively reflected in practical application by using the formulas (1) to (4). However, the existing y-direction shear stress theoretical formula and finite element calculation result have significant relative errors, and in practical application, mapping between y-direction shear force and shear stress cannot be effectively reflected, so that in the embodiment, the mapping can be aimed at the shear stress tauyAnd shear force FyAnd correcting the mapping relation.
Fig. 3 is a stress extraction point distribution diagram of a mapping relationship between shear stress and shear force of the section steel provided by an embodiment of the method for acquiring response distribution of a steel reinforced concrete structure of the present invention, in the embodiment, stress extraction is performed according to the position shown in fig. 3.
As shown in fig. 3, the correction process includes: determining a first mapping coefficient of section stress and internal force of the section steel; and (3) correcting a preset shear stress formula according to the following formula (6) based on the first mapping coefficient to obtain a mapping relation between the shear stress and the shearing force of the section steel. It should be noted that, in this embodiment, a preset i-shaped shear stress formula is modified.
σy＝αFy(6)
In the formula, σyRepresenting stress generated by shearing force in the y direction; fyShowing the y-direction shearing force of the section of the I-shaped steel; α represents a first mapping coefficient relating to the corresponding station position η and the cross-sectional dimension.
The first mapping coefficient α may be determined as follows: establishing a finite element entity model of the section steel based on the structural size of the section steel; and fitting the linear concentration force applied to the middle section of the finite element solid model of the section steel and the corresponding stress value, and taking the numerical value obtained when the order is 1 as a first mapping coefficient.
Specifically, as shown in fig. 3, the coefficient α is obtained by establishing a finite element solid model of the i-beam of the corresponding dimension to obtain the stress and internal force values of the middle section of the i-beam, considering the boundary effect and the calculation amount, selecting l > 2h, selecting the mesh size of 20mm, setting the left end of the main body as a fixed end and the right end as a loading end, and applying a set of linear concentrated force F along the y direction at the loading pointy＝(F0，F1，…，Fn) Extracting a set of y-direction stresses sigma at corresponding positions etay＝(σ0，σ1，…，σn) And fitting the obtained two arrays by adopting a least square method, selecting the order as 1, and further obtaining the value of the coefficient alpha.
Fig. 4 is a first mapping relationship stress extraction point distribution diagram provided by an embodiment of the method for acquiring the response distribution of the steel reinforced concrete structure of the invention. As shown in FIG. 4, the first mapping relationship between section stress and internal force of the section steel is as follows:
In the formula Fx、Fy、Fz、My、MzIs the internal force of the section steel,
in order to be the stress in the x-direction,
the stress in the y-direction is the stress,
is z-direction stress, A is cross-sectional area, IyIs the second moment of area of the y-axis, IzIs the z-axis section moment of inertia, d is the web thickness, and b is the flange width.
S102, determining a second mapping relation between the section stress of the steel reinforced concrete and the internal force according to the first mapping relation.
Fig. 5 is a stress extraction point distribution diagram of a second mapping relationship provided in an embodiment of the method for acquiring a response distribution of a steel reinforced concrete structure according to the present invention, in this embodiment, stress extraction is performed according to the position shown in fig. 5.
And determining a second mapping coefficient of the section stress and the internal force of the section steel concrete, and correcting the first mapping relation according to the following formulas (12) to (16) through the second mapping coefficient to obtain a corrected second mapping relation.
In the formula, Fx′、Fy′、Fz′、My′、Mz' is section internal force of steel reinforced concrete, beta1、β2、β3、β5、β6And the second mapping coefficient of the section stress and the internal force of the section steel concrete is obtained.
Second mapping coefficient beta of section stress and internal force of steel reinforced concrete1、β2、β3、β5、β6Can be determined as follows: establishing a finite element solid model of the section steel concrete based on the structural size of the section steel concrete; applying a preset group of linear concentrated force and bending moment to the section core of the loading end of the finite element solid model of the section steel concrete to obtain corresponding finite element section steel internal force and finite element section steel concrete internal force; and fitting the finite element section steel internal force and the finite element section steel concrete section internal force, and taking the numerical value obtained when the order is 1 as a second mapping coefficient.
In particular, the coefficient β1、β2、β3、β5、β6And obtaining the stress and internal force values at corresponding positions for fitting calculation by establishing a finite element entity model of the steel reinforced concrete cantilever beam with corresponding size. The size of the established section steel concrete finite element model is determined by the actual structure size, the boundary effect and the calculated amount are considered, l is more than 2h, the grid size is selected to be 20mm, the left end of the main body part is a fixed end, the right end of the main body part is a loading end, and the loading point is located at the section centroid. Five sets of linear concentrated forces F are respectively applied at the loading pointx′、Fy′、Fz' and bending moment My′、Mz' separately extracting the stress at the corresponding position of each group of load to obtain the internal force F of the section of the corresponding finite element section steelx、Fy、Fz、My、MzFitting the obtained finite element section internal force and the finite element section internal force of the finite element section steel concrete by a least square method, and selecting the order to be 1 so as to obtain a coefficient beta by fitting1、β2、β3、β5、β6The value of (c).
S103, determining a third mapping relation between the shear stress and the torque caused by the torsion of the steel reinforced concrete based on the preset structural size of the steel reinforced concrete.
Specifically, a finite element solid model of the section steel concrete is established based on the structural size of the section steel concrete, linear torque and a corresponding stress value applied to a loading end of the finite element solid model of the section steel concrete are fitted, a numerical value obtained when the order is 1 is used as a section steel concrete torsion coefficient, and a third mapping relation between shear stress and torque caused by section steel concrete torsion is determined according to the section steel concrete torsion coefficient and a following formula (17).
In the formula Mx' is section torque of the steel reinforced concrete,
the stress beta of the middle point of the flange of the section steel concrete corresponding to the concrete edge in the y direction4Is the torsion coefficient of the steel reinforced concrete.
In particular, the coefficient β4And (3) analyzing by establishing a steel reinforced concrete finite element solid model with a corresponding size, and acquiring stress and internal force values at corresponding positions to obtain the stress and internal force values. The size of the established section steel concrete finite element model is determined by the actual structure size, and meanwhile, the boundary effect and the calculation amount are considered to select l to be more than 2h, the size of the section steel grid is selected to be 20mm, the size of the concrete grid is selected to be 100mm, and the size of the reinforcing steel grid is selected to be 100 mm. The left end of the main body part is a fixed end, the right end is a loading end, and a group of linear torques M are appliedx′＝(M′x0，M′x1，…，M′xn) Extracting stress corresponding to the middle section
To obtain
For the obtained Mx' and
fitting the two groups of data by a least square method, and selecting the order to be 1 so as to obtain a coefficient beta4。
And S104, determining the section internal force of the section steel concrete according to the second mapping relation, the third mapping relation and the pre-acquired stress monitoring data.
In this embodiment, the stress monitoring data is obtained from a stress sensor disposed at a predetermined position. In one embodiment, the stress sensor is a plurality of sensors arranged along the X direction, the Y direction and the Z direction respectively with reference to a predetermined cross-sectional coordinate system. Fig. 6 is a layout diagram of stress sensors provided by an embodiment of the method for acquiring the response distribution of the steel reinforced concrete structure. As shown in fig. 6, the sensors arranged in the X direction in the present embodiment are X1, X2, and X3, the sensors arranged in the Y direction are Y1, Y2, Y3, and Y4, and the sensors arranged in the Z direction are Z1 and Z2.
Wherein, the sensors X1 and X3 are arranged on the outer side of the upper flange along the X direction and have a distance a from the Z axis respectively1And a3. The sensor X2 is arranged outside the lower flange at a distance a from the z-axis2(ii) a The sensors Y1 and Y2 are respectively arranged on the outer side of the flange of the section steel and are symmetrically arranged along the Y axis, and the sensors Y3 and Y4 are respectively arranged on the outer side of the concrete and are symmetrically arranged along the Y axis; the sensors Z1 and Z2 are respectively arranged on two sides of the web of the section steel along the Z direction and are symmetrically arranged along the Z axis.
The mathematical expression for acquiring the internal force of the steel reinforced concrete by utilizing the sensor monitoring data is as follows:
Mx′＝β4(σY3-σY4) (21)
in the formula sigmaX1、σX2、σX3Stress, σ, monitored for sensors arranged in the x-directionY1、σY2、σY3、σY4Stress, σ, monitored for sensors arranged in the y-directionZ1、σZ2The stress monitored for sensors arranged along the z-direction.
And S105, determining the load of the preset loading point based on the force balance principle according to the internal force of the section of the steel reinforced concrete and the position relation between the preset loading point and the section.
Fig. 7 is a schematic diagram of the monitoring section and the position of the loading point provided by an embodiment of the method for acquiring the response distribution of the steel reinforced concrete structure. As shown in fig. 7, the coordinate system a1 is a global coordinate system, and the coordinate system a2 is the cross-sectional coordinate system.
The formula of the load of the preset loading point is as follows:
In the formula
For the load of the loading point under the preset overall coordinate system,
in order to monitor the cross-section internal force of the cross section under the cross-section coordinate system, theta is an included angle between the X direction of the cross-section coordinate and the X direction of the whole coordinate system, and l is a linear distance from the monitored cross section to a preset loading point.
And S106, generating a solid model according to the preset construction size, and inputting the load of the preset loading point into the solid model as a target load.
And establishing a steel reinforced concrete truss solid model by taking the actual construction size as a standard, setting section steel and steel bars as an ideal elastic-plastic constitutive model, and setting concrete as a plastic damage constitutive model. The section steel, the steel bar and the concrete act together. And inputting the load of the loading point obtained by calculation in the steps as a load to the established solid model of the steel reinforced concrete truss, and analyzing to obtain the response distribution of the steel reinforced concrete.
The method, the device and the equipment for acquiring the response distribution of the section steel concrete structure determine a first mapping relation between section steel stress and internal force, determine a second mapping relation between the section steel concrete stress and the internal force according to the first mapping relation, determine a third mapping relation between shear stress and torque caused by section steel concrete torsion based on the preset structural size of the section steel concrete, and determine the section internal force of the section steel concrete according to the second mapping relation, the third mapping relation and pre-acquired stress monitoring data; the stress monitoring data are acquired from a stress sensor arranged at a preset position, the load of a preset loading point is determined based on the force balance principle according to the internal force of the section of the steel reinforced concrete and the position relation between the preset loading point and the section, a solid model is generated according to a preset construction size, and the load of the preset loading point is used as a target load and is input into the solid model to acquire the response distribution of the steel reinforced concrete structure. The method for acquiring the internal force of the section of the steel reinforced concrete is established based on the monitoring data, so that the stress distribution of the steel reinforced concrete can be accurately acquired, the reliability is high, and the deviation between a simulation result and actual response distribution is effectively reduced.
The invention also provides a device for acquiring the response distribution of the steel reinforced concrete structure, which is used for realizing the embodiment of the method. Fig. 8 is a schematic structural diagram provided by an embodiment of the device for acquiring response distribution of a steel reinforced concrete structure according to the present invention, as shown in fig. 8, the embodiment includes a determining module 11 and an acquiring module 12;
the determining module 11 is configured to determine a first mapping relationship between section stress and internal force of the section steel, determine a second mapping relationship between section stress and internal force of the section steel concrete according to the first mapping relationship, determine a third mapping relationship between shear stress and torque caused by torsion of the section steel concrete based on a preset structural size of the section steel concrete, and determine the section internal force of the section steel concrete according to the second mapping relationship, the third mapping relationship and pre-acquired stress monitoring data; the stress monitoring data are acquired from a stress sensor arranged at a preset position, and the load of a preset loading point is determined based on a force balance principle according to the internal force of the section of the steel reinforced concrete and the position relation between the preset loading point and the section;
the obtaining module 12 is configured to generate a solid model according to a preset construction size, and input a load of a preset loading point into the solid model as a target load to obtain response distribution of the steel reinforced concrete structure.
Further, the first mapping relation comprises a mapping relation between the shear stress and the shearing force of the section steel;
the determining module is specifically used for determining a first mapping coefficient of section stress and internal force of the section steel;
and correcting a preset shear stress formula based on the first mapping coefficient to obtain the mapping relation between the shear stress and the shearing force of the section steel.
Further, the determining module is specifically used for establishing a finite element solid model of the section steel based on the structural size of the section steel; and fitting the linear concentration force applied to the loading end of the finite element solid model of the section steel and the corresponding stress value, and taking the numerical value obtained when the order is 1 as a first mapping coefficient.
Further, the determining module is specifically used for determining a second mapping coefficient of the section stress and the internal force of the steel reinforced concrete; and correcting the first mapping relation based on the second mapping coefficient to obtain a corrected second mapping relation.
Further, the determining module is specifically used for establishing a finite element solid model of the section steel concrete based on the structural size of the section steel concrete; applying a preset group of linear concentrated force and bending moment to the section core of the loading end of the finite element solid model of the section steel concrete to obtain corresponding finite element section steel internal force and finite element section steel concrete internal force; and fitting the finite element section steel internal force and the finite element section steel concrete section internal force, and taking the numerical value obtained when the order is 1 as a second mapping coefficient.
Further, the determining module is specifically used for fitting a linear torque and a corresponding stress value applied to a loading end of the finite element solid model of the section steel concrete, and a numerical value obtained when the order is 1 is used as a section steel concrete torsion coefficient; and determining a third mapping relation between the shear stress and the torque caused by the torsion of the section steel concrete according to the torsion coefficient of the section steel concrete.
Further, the stress sensor is a plurality of sensors respectively arranged along the X direction, the Y direction and the Z direction based on a preset section coordinate system.
Further, the determining module is specifically used for obtaining an overall coordinate system of the steel reinforced concrete;
and converting the internal force of the section of the steel reinforced concrete into the load of the preset loading point based on the integral coordinate system according to the position relation between the preset loading point and the section and the force balance principle.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Fig. 9 is a structural schematic diagram provided by an embodiment of the device for acquiring response distribution of a steel reinforced concrete structure of the invention, and the device for acquiring response distribution of a steel reinforced concrete structure is also provided for implementing the method embodiment. The device for acquiring the response distribution of the steel reinforced concrete structure comprises a processor 21 and a memory 22, wherein the processor 21 is connected with the memory 22: the processor 21 is configured to call and execute a program stored in the memory 22; a memory 22 for storing a program for performing at least the above embodiment steel concrete structure response distribution acquisition method.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that the terms "first," "second," and the like in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. The method for acquiring the response distribution of the steel reinforced concrete structure is characterized by comprising the following steps of:
determining a first mapping relation between section stress and internal force of the section steel;
determining a second mapping relation between section stress and internal force of the steel reinforced concrete according to the first mapping relation;
determining a third mapping relation between shear stress and torque caused by the torsion of the section steel concrete based on the preset structural size of the section steel concrete;
determining the section internal force of the section steel concrete according to the second mapping relation, the third mapping relation and the pre-acquired stress monitoring data; the stress monitoring data is obtained from a stress sensor arranged at a preset position;
determining the load of a preset loading point based on a force balance principle according to the internal force of the section of the steel reinforced concrete and the position relation between the preset loading point and the section;
And generating a solid model according to a preset construction size, and inputting the load of the preset loading point into the solid model as a target load so as to obtain the response distribution of the steel reinforced concrete structure.
2. The method of claim 1, wherein the first mapping comprises a mapping of section steel shear stress to shear force;
the determining of the first mapping relation between section stress and internal force of the section steel comprises the following steps:
determining a first mapping coefficient of section stress and internal force of the section steel;
and correcting a preset shear stress formula based on the first mapping coefficient to obtain the mapping relation between the shear stress and the shearing force of the section steel.
3. The method of claim 2, wherein determining the first mapping of section stress to internal force of the section steel comprises:
establishing a finite element solid model of the section steel based on the structural size of the section steel;
and fitting the linear concentration force applied to the loading end of the finite element solid model of the section steel and the corresponding stress value, and taking the numerical value obtained when the order is 1 as the first mapping coefficient.
4. The method of claim 1, wherein determining a second mapping of section stress and internal force of the steel reinforced concrete based on the first mapping comprises:
Determining a second mapping coefficient of the section stress and the internal force of the section steel concrete;
and correcting the first mapping relation based on the second mapping coefficient to obtain the corrected second mapping relation.
5. The method of claim 4, wherein determining the second mapping coefficient of section stress to internal force of the steel reinforced concrete comprises:
establishing a finite element solid model of the section steel concrete based on the structural size of the section steel concrete;
applying a preset group of linear concentrated force and bending moment to the section core of the loading end of the finite element solid model of the section steel concrete to obtain corresponding finite element section steel internal force and finite element section steel concrete internal force;
and fitting the finite element section steel internal force and the finite element section steel concrete section internal force, and taking the numerical value obtained when the order is 1 as the second mapping coefficient.
6. The method of claim 5, wherein determining a third mapping of shear stress and torque induced by torsion of the steel reinforced concrete based on the preset structural dimensions of the steel reinforced concrete comprises:
fitting a linear torque and a corresponding stress value applied to a loading end of the finite element solid model of the section steel concrete, and taking a numerical value obtained when the order is 1 as a section steel concrete torsion coefficient;
And determining the third mapping relation between the shear stress and the torque caused by the torsion of the steel reinforced concrete according to the torsion coefficient of the steel reinforced concrete.
7. The method according to claim 1, wherein the stress sensor is a plurality of sensors arranged in an X-direction, a Y-direction and a Z-direction, respectively, with reference to a predetermined cross-sectional coordinate system.
8. The method according to claim 7, wherein the determining the load of the preset loading point according to the section internal force of the steel reinforced concrete and the position relation of the preset loading point and the section based on the force balance principle comprises the following steps:
acquiring an integral coordinate system of the section steel concrete;
and according to the position relation between the preset loading point and the section and the force balance principle, converting the section internal force of the section steel concrete into the load of the preset loading point based on the integral coordinate system.
9. The device for acquiring the response distribution of the steel reinforced concrete structure is characterized by comprising a determining module and an acquiring module;
the determining module is used for determining a first mapping relation between section stress and internal force of the section steel, determining a second mapping relation between section stress and internal force of the section steel concrete according to the first mapping relation, determining a third mapping relation between shear stress and torque caused by torsion of the section steel concrete based on a preset structural size of the section steel concrete, and determining the section internal force of the section steel concrete according to the second mapping relation, the third mapping relation and pre-acquired stress monitoring data; the stress monitoring data are acquired from a stress sensor arranged at a preset position, and the load of a preset loading point is determined based on a force balance principle according to the internal force of the section of the steel reinforced concrete and the position relation between the preset loading point and the section;
The obtaining module is used for generating a solid model according to a preset construction size, and inputting the load of the preset loading point into the solid model as a target load so as to obtain the response distribution of the steel reinforced concrete structure.
10. The utility model provides a shaped steel concrete structure response distributed acquisition equipment which characterized in that, includes processor and memory, the processor with the memory links to each other:
the processor is used for calling and executing the program stored in the memory;
the memory for storing the program at least for performing the method for acquiring a response profile of a steel concrete structure according to any one of claims 1 to 8.
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| CN113051754A (en) * | 2021-03-23 | 2021-06-29 | 同济大学建筑设计研究院(集团)有限公司 | Design method for section of asymmetric flange H-shaped steel combination beam |
| CN113158597A (en) * | 2021-04-25 | 2021-07-23 | 中国电建集团贵阳勘测设计研究院有限公司 | Water gate stress stability analysis method based on CATIA (computer-aided three-dimensional interactive application) calculation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113051754A (en) * | 2021-03-23 | 2021-06-29 | 同济大学建筑设计研究院(集团)有限公司 | Design method for section of asymmetric flange H-shaped steel combination beam |
| CN113051754B (en) * | 2021-03-23 | 2022-06-21 | 同济大学建筑设计研究院(集团)有限公司 | Design method for section of asymmetric flange H-shaped steel combination beam |
| CN113158597A (en) * | 2021-04-25 | 2021-07-23 | 中国电建集团贵阳勘测设计研究院有限公司 | Water gate stress stability analysis method based on CATIA (computer-aided three-dimensional interactive application) calculation |
| CN113158597B (en) * | 2021-04-25 | 2022-08-19 | 中国电建集团贵阳勘测设计研究院有限公司 | Water gate stress stability analysis method based on CATIA (computer-aided three-dimensional interactive application) calculation |
| CN113343344A (en) * | 2021-07-26 | 2021-09-03 | 哈尔滨工业大学（深圳） | Structural response prediction method, device and equipment based on tower crane dynamic work |
| CN113343344B (en) * | 2021-07-26 | 2022-11-15 | 哈尔滨工业大学（深圳） | Structural response prediction method, device and equipment based on tower crane dynamic work |
| CN116770886A (en) * | 2023-08-22 | 2023-09-19 | 山东建筑大学 | Reinforced lateral load resistant assembled foundation, power transmission tower and construction method |
| CN116770886B (en) * | 2023-08-22 | 2023-11-17 | 山东建筑大学 | Reinforced lateral load resistant assembled foundation, power transmission tower and construction method |
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