CN113901548A - Tunnel design method, system and storage medium - Google Patents
Tunnel design method, system and storage medium Download PDFInfo
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Abstract
The invention discloses a tunnel design method, a tunnel design system and a storage medium. The method comprises the following steps: extracting professional data from a professional database, and performing load calculation and constraint calculation according to the pre-defined tunnel design parameters and the professional data to obtain tunnel load and tunnel constraint; according to the predefined tunnel working condition, the subentry coefficient and the combined value coefficient of the tunnel load under different tunnel working conditions, establishing a structural calculation model, and performing internal force calculation based on the structural calculation model to obtain the tunnel internal force; extracting tunnel internal forces under different tunnel working conditions to perform reinforcement calculation to obtain reinforcement results, and continuously adjusting the reinforcement results until the tunnel structure strength and the tunnel structure deformation meet the predefined tunnel design conditions; generating a tunnel structure calculation book according to result data generated in the calculation process; and the result data comprises tunnel load, tunnel constraint, tunnel internal force and reinforcement configuration results. The invention can realize one-stop design of the tunnel and improve the design efficiency of the tunnel.
Description
Technical Field
The present invention relates to the field of tunnel engineering technologies, and in particular, to a tunnel design method, a tunnel design system, and a storage medium.
Background
At present, the main process of tunnel design is: according to the tunnel general plan view and the geological longitudinal section design view, determining a tunnel section to be calculated and the corresponding tunnel burial depth and geological data, further calculating the load borne by the tunnel, creating a structural calculation model in structural calculation software, defining the load and working conditions, calculating the stress and deformation of the tunnel, extracting the internal force of the tunnel, performing reinforcement calculation, and sorting the calculation results to form a tunnel structure calculation book. Because the data calculation related to the tunnel design process is complex, the data needs to be calculated through different structure calculation software, and then a designer manually extracts data from each structure calculation software to design the tunnel, so that the tunnel is difficult to design in a one-stop manner, and the tunnel design efficiency is low.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a tunnel design method, a tunnel design system and a storage medium, which can realize one-stop tunnel design and improve the tunnel design efficiency.
In order to solve the foregoing technical problem, in a first aspect, an embodiment of the present invention provides a tunnel design method, including:
extracting professional data from a professional database, and performing load calculation and constraint calculation according to predefined tunnel design parameters and the professional data to obtain tunnel load and tunnel constraint;
according to the predefined tunnel working condition, and the subentry coefficient and the combined value coefficient of the tunnel load under different tunnel working conditions, establishing a structure calculation model, and performing internal force calculation based on the structure calculation model to obtain the tunnel internal force;
extracting the tunnel internal forces under different tunnel working conditions to perform reinforcement calculation to obtain reinforcement results, and continuously adjusting the reinforcement results until the tunnel structure strength and the tunnel structure deformation meet the predefined tunnel design conditions;
generating a tunnel structure calculation book according to result data generated in the calculation process; wherein the result data comprises the tunnel load, the tunnel constraint, the tunnel internal force and the reinforcement configuration result.
Further, before the extracting professional data from the professional database, performing load calculation and constraint calculation according to the predefined tunnel design parameters and the professional data to obtain tunnel load and tunnel constraint, the method further includes:
and acquiring the professional data, performing structured storage on the professional data, and establishing the professional database.
Further, after extracting the tunnel internal force under different tunnel working conditions and calculating reinforcement to obtain a reinforcement result, and continuously adjusting the reinforcement result until the tunnel structure strength and the tunnel structure deformation meet predefined design conditions, the method further comprises:
and constructing a tunnel steel bar three-dimensional model according to the latest reinforcement distribution result, and counting to obtain the steel bar engineering quantity based on the tunnel steel bar three-dimensional model.
Further, the load calculation and the constraint calculation are performed according to the predefined tunnel design parameters and the professional data to obtain the tunnel load and the tunnel constraint, and the method specifically comprises the following steps:
carrying out buried depth calculation according to the tunnel design parameters to obtain tunnel buried depth;
determining the stratum where the tunnel is located according to the tunnel burial depth based on the professional data;
carrying out load calculation according to the tunnel buried depth and the stratum where the tunnel is located to obtain the tunnel load;
and performing constraint calculation according to the stratum where the tunnel is located to obtain the tunnel constraint.
Further, according to predefined tunnel working conditions, and the subentry coefficient and the combined value coefficient of the tunnel load under different tunnel working conditions, a structural calculation model is established, and internal force calculation is performed based on the structural calculation model to obtain the tunnel internal force, which specifically comprises the following steps:
establishing the structural calculation model according to the tunnel working condition and the polynomial coefficient and the combination value coefficient of the tunnel load under different tunnel working conditions;
and based on the structural calculation model, respectively carrying out internal force calculation on the tunnel in the bearing capacity limit state and the tunnel in the normal use limit state to obtain the tunnel internal force.
Further, the extraction of the tunnel internal force under different tunnel working conditions is performed with reinforcement calculation to obtain reinforcement results, specifically:
and according to the design specification of the tunnel structure, performing pure bending, bending and shearing calculation on the section of the tunnel according to the internal force of the tunnel, and calculating the width of a crack of the member to obtain the reinforcement result.
In a second aspect, an embodiment of the present invention provides a tunnel design system, including:
the load and constraint calculation module is used for extracting professional data from a professional database, and performing load calculation and constraint calculation according to the pre-defined tunnel design parameters and the professional data to obtain tunnel load and tunnel constraint;
the internal force calculation module is used for establishing a structural calculation model according to a predefined tunnel working condition, and the subentry coefficient and the combined value coefficient of the tunnel load under different tunnel working conditions, and performing internal force calculation based on the structural calculation model to obtain the tunnel internal force;
the reinforcement calculation module is used for extracting the tunnel internal force under different tunnel working conditions to perform reinforcement calculation to obtain a reinforcement result, and continuously adjusting the reinforcement result until the tunnel structure strength and the tunnel structure deformation meet the predefined tunnel design conditions;
the calculation book generation module is used for generating a tunnel structure calculation book according to the result data generated by the calculation module; wherein the result data comprises the tunnel load, the tunnel constraint, the tunnel internal force and the reinforcement configuration result.
Further, the tunnel design system further includes:
and the database establishing module is used for extracting professional data from the professional database, carrying out load calculation and constraint calculation according to the pre-defined tunnel design parameters and the professional data, acquiring the professional data before obtaining tunnel load and tunnel constraint, and carrying out structured storage on the professional data to establish the professional database.
Further, the tunnel design system further includes:
and the reinforcing steel bar quantity counting module is used for extracting the internal force of the tunnel under different tunnel working conditions to carry out reinforcing steel bar distribution calculation to obtain a reinforcing steel bar distribution result, continuously adjusting the reinforcing steel bar distribution result until the strength of the tunnel structure and the deformation of the tunnel structure meet the predefined design conditions, constructing a tunnel reinforcing steel bar three-dimensional model according to the latest reinforcing steel bar distribution result, and counting to obtain the reinforcing steel bar engineering quantity based on the tunnel reinforcing steel bar three-dimensional model.
In a third aspect, an embodiment of the present invention provides a computer-readable storage medium, where the computer-readable storage medium includes a stored computer program, where the apparatus in which the computer-readable storage medium is located is controlled to execute the tunnel design method described above when the computer program runs.
The embodiment of the invention has the following beneficial effects:
extracting professional data from a professional database, performing load calculation and constraint calculation according to the pre-defined tunnel design parameters and the professional data to obtain tunnel load and tunnel constraint, building a structural calculation model according to the predefined tunnel working condition, the subentry coefficient and the combination value coefficient of the tunnel load under different tunnel working conditions, and calculating internal force based on the structural calculation model to obtain tunnel internal force, extracting tunnel internal force under different tunnel working conditions to perform reinforcement calculation to obtain reinforcement result, continuously adjusting reinforcement results until the strength and deformation of the tunnel structure meet the predefined tunnel design conditions, generating a tunnel structure calculation book according to result data generated in the calculation process, and the result data comprises tunnel load, tunnel constraint, tunnel internal force and reinforcement result, and the tunnel design is completed. Compared with the prior art, the embodiment of the invention automatically performs load calculation, constraint calculation, internal force calculation and reinforcement calculation and automatically generates a tunnel structure calculation book based on professional data stored in a professional database and actual design requirements of tunnel design parameters, tunnel working conditions, tunnel design conditions and the like input by a user, does not need to calculate data through different structure calculation software, and then manually integrates data in each structure calculation software to design a tunnel, can realize one-stop tunnel design, and improves the tunnel design efficiency.
Drawings
Fig. 1 is a schematic flow chart of a tunnel design method according to a first embodiment of the present invention;
fig. 2 is a data flow diagram of a tunnel design method in a first embodiment of the present invention;
FIG. 3 is a cross-sectional view of a tunnel in a first embodiment of the present invention;
FIG. 4 is a flowchart illustrating a stratum determination process of a tunnel according to a first embodiment of the present invention;
fig. 5 is a flowchart of tunnel load calculation according to the first embodiment of the present invention;
fig. 6 is a schematic structural diagram of a tunnel design system in a second embodiment of the present invention.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, the step numbers in the text are only for convenience of explanation of the specific embodiments, and do not serve to limit the execution sequence of the steps. The method provided by the embodiment can be executed by the relevant terminal device, and the following description takes a computer as an example of an execution subject.
The first embodiment:
as shown in fig. 1, a first embodiment provides a tunnel design method, which includes steps S1 to S4:
s1, extracting professional data from the professional database, and performing load calculation and constraint calculation according to the pre-defined tunnel design parameters and the professional data to obtain tunnel load and tunnel constraint;
s2, building a structure calculation model according to the predefined tunnel working condition, and the subentry coefficient and the combined value coefficient of the tunnel load under different tunnel working conditions, and performing internal force calculation based on the structure calculation model to obtain the tunnel internal force;
s3, extracting the tunnel internal force under different tunnel working conditions to perform reinforcement calculation to obtain reinforcement results, and continuously adjusting the reinforcement results until the tunnel structure strength and the tunnel structure deformation meet the predefined tunnel design conditions;
s4, generating a tunnel structure calculation book according to result data generated in the calculation process; and the result data comprises tunnel load, tunnel constraint, tunnel internal force and reinforcement configuration results.
The professional data relates to upstream professional data of tunnel calculation and design data of tunnel specialization, the upstream professional data of tunnel calculation comprises line plane curve data, vertical curve data, rail surface elevation of a track, exploration drilling data and the like, and the design data of tunnel specialization comprises section shape, size, materials and the like.
As shown in fig. 2, as an example, in step S1, professional data is extracted from the professional database, predefined tunnel design parameters input by the user are obtained, and load calculation and constraint calculation are performed according to the tunnel design parameters and the professional data, so as to obtain tunnel load and tunnel constraints.
In step S2, a predefined tunnel condition input by a user is obtained, the itemization coefficients and the correlation value coefficients of various tunnel loads under different tunnel conditions are determined from the tunnel design specification based on the type of the tunnel load, a structural calculation model is established according to the predefined tunnel condition, the itemization coefficients and the combination value coefficients of the tunnel loads under different tunnel conditions, and internal force calculation is performed based on the structural calculation model to obtain the tunnel internal force.
In step S3, extracting tunnel internal forces under different tunnel conditions to perform reinforcement calculation, obtaining reinforcement results, and continuously adjusting tunnel cross-sectional dimensions and reinforcement results until the tunnel structural strength and the tunnel structural deformation satisfy predefined tunnel design conditions, for example, the adjusted tunnel structural strength is greater than the predefined minimum tunnel structural strength, and the adjusted tunnel structural deformation is less than the predefined maximum tunnel structural deformation, so that the designed tunnel structural strength and the designed tunnel structural deformation meet the design requirements;
in step S4, a tunnel structure calculation book is automatically generated according to the result data generated in the above calculation process, i.e. the data of tunnel load, tunnel constraint, tunnel internal force, reinforcement result, etc., to complete the tunnel design.
In the embodiment, based on professional data stored in a professional database and actual design requirements such as tunnel design parameters, tunnel working conditions and tunnel design conditions input by a user, load calculation, constraint calculation, internal force calculation and reinforcement calculation are automatically performed, a tunnel structure calculation book is automatically generated, calculation of data through different structure calculation software is not needed, data in each structure calculation software is manually integrated to perform tunnel design, one-stop tunnel design can be achieved, and tunnel design efficiency is improved.
In a preferred embodiment, before the extracting professional data from the professional database, and performing load calculation and constraint calculation according to the predefined tunnel design parameters and professional data to obtain tunnel load and tunnel constraint, the method further includes: professional data are obtained, structured storage is carried out on the professional data, and a professional database is established.
According to the embodiment, the acquired professional data are structurally stored, a professional database is established, the subsequent rapid extraction of the professional data is facilitated, and the tunnel design efficiency is improved.
In a preferred embodiment, after extracting the tunnel internal forces under different tunnel conditions to perform reinforcement calculation to obtain a reinforcement result, and continuously adjusting the reinforcement result until the tunnel structure strength and the tunnel structure deformation satisfy predefined design conditions, the method further includes: and constructing a tunnel steel bar three-dimensional model according to the latest reinforcement configuration result, and counting to obtain the steel bar engineering quantity based on the tunnel steel bar three-dimensional model.
According to the embodiment, the tunnel steel bar three-dimensional model is built according to the latest reinforcement configuration result, the reinforcement engineering quantity is obtained based on the statistics of the tunnel steel bar three-dimensional model, a user can visually check the tunnel steel bar three-dimensional model to obtain the reinforcement engineering quantity, the purpose of reducing the reinforcement engineering quantity is achieved by subsequently and quickly adjusting the reinforcement configuration result, and the tunnel design efficiency is improved.
In a preferred embodiment, the load calculation and the constraint calculation are performed according to predefined tunnel design parameters and professional data to obtain tunnel loads and tunnel constraints, and specifically, the method includes: carrying out buried depth calculation according to the tunnel design parameters to obtain the buried depth of the tunnel; determining the stratum where the tunnel is located according to the buried depth of the tunnel based on professional data; carrying out load calculation according to the buried depth of the tunnel and the stratum where the tunnel is located to obtain tunnel load; and carrying out constraint calculation according to the stratum where the tunnel is located to obtain tunnel constraint.
Illustratively, the calculation process of the tunnel load and the tunnel constraint is specifically as follows:
1. the tunnel cross section is as shown in fig. 3, and the buried depth is calculated according to the tunnel design parameters to obtain the buried depth of the tunnel, that is,
H0＝h1-h2+(D-h-t)；
h0 is the tunnel buried depth, H1 is the ground elevation, H2 rail surface elevation, D is the tunnel net height, H is the track height, and t is the tunnel structure thickness.
2. Based on professional data, determining the stratum where the tunnel is located according to the tunnel burial depth, namely, determining the stratum where the tunnel is located according to the stratum condition and the tunnel burial depth condition, wherein the determination process is shown in fig. 4.
Wherein the thickness of different formations may be different, for example as shown in table 1:
TABLE 1
| Formation of earth | Thickness (m) |
| <3-1> | 0.4 |
| <3-2> | 2.97 |
| <4-1> | 1.75 |
3. Performing constraint calculation according to the stratum where the tunnel is located to obtain tunnel constraint, namely, when calculating the normal foundation resistance coefficient, averaging the stratum resistance coefficient where the tunnel is located by adopting a weighting and averaging method to obtain corresponding horizontal and vertical stratum resistance coefficients, and finally performing square and root processing to obtain a final normal stratum resistance coefficient, for example, as shown in table 2:
TABLE 2
Wherein alpha is the included angle between the action center line of the spring and the horizontal line, and khIs the horizontal bed coefficient, kvIs the vertical bed coefficient.
4. And (3) carrying out load calculation according to the buried depth of the tunnel and the stratum where the tunnel is located to obtain the tunnel load, wherein the calculation process is shown in figure 5.
In an embodiment of the present invention, the method includes the steps of establishing a structural calculation model according to predefined tunnel conditions, and the subentry coefficient and the combination value coefficient of tunnel loads under different tunnel conditions, and performing internal force calculation based on the structural calculation model to obtain the tunnel internal force, specifically: establishing a structural calculation model according to the tunnel working condition, and the subentry coefficient and the combined value coefficient of the tunnel load under different tunnel working conditions; and based on the structural calculation model, respectively carrying out internal force calculation on the tunnel under the bearing capacity limit state and the tunnel under the normal use limit state to obtain the tunnel internal force.
Illustratively, the method comprises the steps of obtaining a predefined tunnel working condition input by a user, determining the subentry coefficient and the related value coefficient of various tunnel loads under different tunnel working conditions from a tunnel design specification based on the type of the tunnel load, establishing a structural calculation model according to the predefined tunnel working condition, the subentry coefficient and the combined value coefficient of the tunnel loads under different tunnel working conditions, wherein the calculation model comprises the size, the material, the borne load and the constraint of the tunnel, the calculation working conditions and the like, and the tunnel is designed according to a bearing capacity limit state and a normal use limit state respectively. Wherein, each working condition and the corresponding load subentry coefficient are shown in tables 3 and 4:
TABLE 3 load subentry coefficient of each working condition under the extreme bearing capacity
Note: 1. the band indicates that if the load is present, it needs to be considered; 2. 1.0(1.3), 1.0 when structure is favorable and 1.3 when structure is unfavorable; 3. belt+Additional deflection is considered for non-circular tunnels where the load is non-circular.
TABLE 4 load subentry coefficient of each working condition under normal use limit state
Note: 1. the band indicates that if the load is present, it needs to be considered; 2. belt+Additional deflection is considered for non-circular tunnels where the load is non-circular.
In an embodiment, the extracting of the tunnel internal force under different tunnel working conditions is performed to perform reinforcement calculation, and a reinforcement result is obtained, specifically: and according to the design specification of the tunnel structure, performing pure bending, bending and shearing calculation on the cross section of the tunnel according to the internal force of the tunnel, and calculating the width of a crack of the member to obtain a reinforcement result.
Illustratively, the pure curve calculation is specified as follows:
and (3) calculating the area of the stressed steel bar:
wherein M is a bending moment design value, alpha1Coefficient related to concrete strength grade, fcIs the designed value of the axial compressive strength of the concrete, b is the width of the cross section or the width of the web plate with an inverted T-shaped cross section, h0Is the effective height of the cross section, xibIs a relative limit compression zone height, f'yIs designed value of the compressive strength of common steel bars, a'sIs the distance from the longitudinal common reinforcing steel resultant force point of the compression area to the compression edge of the cross section, A'sThe cross section area of the longitudinal common steel bar of the compression area;
area calculation of the tensioned steel bars:
wherein x is the height of the concrete compression zone, A's actualThe actual cross-sectional area of the longitudinal common steel bar of the compression area.
E.g. x < 2 a'sWhen the temperature of the water is higher than the set temperature,
wherein f isyThe design value of the tensile strength of the common steel bar is obtained;
if not, then,
as shown in fig. 6, the second embodiment provides a tunnel design system including: the load and constraint calculation module 21 is used for extracting professional data from a professional database, and performing load calculation and constraint calculation according to the predefined tunnel design parameters and the professional data to obtain tunnel load and tunnel constraint; the internal force calculation module 22 is configured to establish a structural calculation model according to predefined tunnel working conditions, and the subentry coefficient and the combined value coefficient of tunnel loads under different tunnel working conditions, and perform internal force calculation based on the structural calculation model to obtain a tunnel internal force; the reinforcement calculation module 23 is configured to extract tunnel internal forces under different tunnel working conditions to perform reinforcement calculation, obtain reinforcement results, and continuously adjust the reinforcement results until the tunnel structure strength and the tunnel structure deformation meet predefined tunnel design conditions; a calculation book generation module 24, configured to generate a tunnel structure calculation book according to the result data generated by the calculation module; and the result data comprises tunnel load, tunnel constraint, tunnel internal force and reinforcement configuration results.
The professional data relates to upstream professional data of tunnel calculation and design data of tunnel specialization, the upstream professional data of tunnel calculation comprises line plane curve data, vertical curve data, rail surface elevation of a track, exploration drilling data and the like, and the design data of tunnel specialization comprises section shape, size, materials and the like.
Illustratively, the load and constraint calculation module 21 extracts professional data from a professional database, obtains predefined tunnel design parameters input by a user, and performs load calculation and constraint calculation according to the tunnel design parameters and the professional data to obtain tunnel loads and tunnel constraints.
The method comprises the steps of obtaining a predefined tunnel working condition input by a user through an internal force calculation module 22, determining the subentry coefficient and the related value coefficient of various tunnel loads under different tunnel working conditions from a tunnel design specification based on the type of the tunnel load, establishing a structure calculation model according to the predefined tunnel working condition and the subentry coefficient and the combined value coefficient of the tunnel loads under different tunnel working conditions, and performing internal force calculation based on the structure calculation model to obtain the tunnel internal force.
By a reinforcement calculation module 23, extracting tunnel internal forces under different tunnel working conditions to perform reinforcement calculation to obtain a reinforcement result, and continuously adjusting the tunnel section size and the reinforcement result until the tunnel structural strength and the tunnel structural deformation meet predefined tunnel design conditions, for example, the adjusted tunnel structural strength is greater than the predefined minimum tunnel structural strength, and the adjusted tunnel structural deformation is less than the predefined maximum tunnel structural deformation, so that the designed tunnel structural strength and the designed tunnel structural deformation meet the design requirements;
and a tunnel structure calculation book is automatically generated by the calculation book generation module 24 according to result data generated by the calculation module, namely tunnel load, tunnel constraint, tunnel internal force, reinforcement arrangement result and the like, so that tunnel design is completed.
In the embodiment, based on professional data stored in a professional database and actual design requirements such as tunnel design parameters, tunnel working conditions and tunnel design conditions input by a user, load calculation, constraint calculation, internal force calculation and reinforcement calculation are automatically performed, a tunnel structure calculation book is automatically generated, calculation of data through different structure calculation software is not needed, data in each structure calculation software is manually integrated to perform tunnel design, one-stop tunnel design can be achieved, and tunnel design efficiency is improved.
In a preferred embodiment, the tunnel design system further includes: and the database establishing module is used for extracting the professional data from the professional database, carrying out load calculation and constraint calculation according to the pre-defined tunnel design parameters and the professional data, acquiring the professional data before obtaining tunnel load and tunnel constraint, carrying out structured storage on the professional data and establishing the professional database.
According to the embodiment, the acquired professional data are structurally stored through the database establishing module, the professional database is established, the follow-up rapid extraction of the professional data is facilitated, and the tunnel design efficiency is improved.
In a preferred embodiment, the tunnel design system further includes: and the reinforcing steel bar quantity counting module is used for extracting the tunnel internal force under different tunnel working conditions to carry out reinforcing steel bar distribution calculation to obtain a reinforcing steel bar distribution result, continuously adjusting the reinforcing steel bar distribution result until the tunnel structure strength and the tunnel structure deformation meet the predefined design conditions, constructing a tunnel reinforcing steel bar three-dimensional model according to the latest reinforcing steel bar distribution result, and counting to obtain the reinforcing steel bar engineering quantity based on the tunnel reinforcing steel bar three-dimensional model.
According to the embodiment, the three-dimensional model of the tunnel steel bars is constructed according to the latest reinforcement allocation result through the reinforcement amount counting module, the reinforcement engineering amount is obtained based on the statistics of the three-dimensional model of the tunnel steel bars, a user can visually check the three-dimensional model of the tunnel steel bars to obtain the reinforcement engineering amount, the purpose of reducing the reinforcement engineering amount by subsequently and quickly adjusting the reinforcement allocation result is facilitated, and the tunnel design efficiency is improved.
In a preferred embodiment, the load calculation and the constraint calculation are performed according to predefined tunnel design parameters and professional data to obtain tunnel loads and tunnel constraints, and specifically, the method includes: carrying out buried depth calculation according to the tunnel design parameters to obtain the buried depth of the tunnel; determining the stratum where the tunnel is located according to the buried depth of the tunnel based on professional data; carrying out load calculation according to the buried depth of the tunnel and the stratum where the tunnel is located to obtain tunnel load; and carrying out constraint calculation according to the stratum where the tunnel is located to obtain tunnel constraint.
Illustratively, the calculation process of the tunnel load and the tunnel constraint is specifically as follows:
1. the buried depth is calculated according to the design parameters of the tunnel to obtain the buried depth of the tunnel, namely,
H0＝h1-h2+(D-h-t)；
h0 is the tunnel buried depth, H1 is the ground elevation, H2 rail surface elevation, D is the tunnel net height, H is the track height, and t is the tunnel structure thickness.
2. And determining the stratum where the tunnel is located according to the tunnel burial depth based on the professional data, namely judging the stratum where the tunnel body is located according to the stratum condition and the tunnel burial depth condition.
Wherein the thickness of different formations may be different, for example as shown in table 5:
TABLE 5
| Formation of earth | Thickness (m) |
| <3-1> | 0.4 |
| <3-2> | 2.97 |
| <4-1> | 1.75 |
3. Performing constraint calculation according to the stratum where the tunnel is located to obtain tunnel constraint, namely, when calculating the normal foundation resistance coefficient, averaging the stratum resistance coefficient where the tunnel is located by adopting a weighting and averaging method to obtain corresponding horizontal and vertical stratum resistance coefficients, and finally performing square and root processing to obtain a final normal stratum resistance coefficient, for example, as shown in table 6:
TABLE 6
Wherein alpha is the included angle between the action center line of the spring and the horizontal line, and khIs the horizontal bed coefficient, kvIs the vertical bed coefficient.
4. And carrying out load calculation according to the buried depth of the tunnel and the stratum where the tunnel is located to obtain the tunnel load.
In an embodiment of the present invention, the method includes the steps of establishing a structural calculation model according to predefined tunnel conditions, and the subentry coefficient and the combination value coefficient of tunnel loads under different tunnel conditions, and performing internal force calculation based on the structural calculation model to obtain the tunnel internal force, specifically: establishing a structural calculation model according to the tunnel working condition, and the subentry coefficient and the combined value coefficient of the tunnel load under different tunnel working conditions; and based on the structural calculation model, respectively carrying out internal force calculation on the tunnel under the bearing capacity limit state and the tunnel under the normal use limit state to obtain the tunnel internal force.
Illustratively, the method comprises the steps of obtaining a predefined tunnel working condition input by a user, determining the subentry coefficient and the related value coefficient of various tunnel loads under different tunnel working conditions from a tunnel design specification based on the type of the tunnel load, establishing a structural calculation model according to the predefined tunnel working condition, the subentry coefficient and the combined value coefficient of the tunnel loads under different tunnel working conditions, wherein the calculation model comprises the size, the material, the borne load and the constraint of the tunnel, the calculation working conditions and the like, and the tunnel is designed according to a bearing capacity limit state and a normal use limit state respectively. Wherein, each working condition and the corresponding load subentry coefficient are shown in tables 7 and 8:
TABLE 7 load subentry coefficient of each working condition under bearing capacity limit state
Note: 1. the band indicates that if the load is present, it needs to be considered; 2. 1.0(1.3), 1.0 when structure is favorable and 1.3 when structure is unfavorable; 3. belt+Additional deflection is considered for non-circular tunnels where the load is non-circular.
TABLE 8 load subentry coefficient of each working condition under normal use limit state
Note: 1. the band indicates that if the load is present, it needs to be considered; 2. belt+Additional deflection is considered for non-circular tunnels where the load is non-circular.
In an embodiment, the extracting of the tunnel internal force under different tunnel working conditions is performed to perform reinforcement calculation, and a reinforcement result is obtained, specifically: and according to the design specification of the tunnel structure, performing pure bending, bending and shearing calculation on the cross section of the tunnel according to the internal force of the tunnel, and calculating the width of a crack of the member to obtain a reinforcement result.
Illustratively, the pure curve calculation is specified as follows:
and (3) calculating the area of the stressed steel bar:
wherein M is a bending moment design value, alpha1Coefficient related to concrete strength grade, fcIs the designed value of the axial compressive strength of the concrete, b is the width of the cross section or the width of the web plate with an inverted T-shaped cross section, h0Is the effective height of the cross section, xibIs a relative limit compression zone height, f'yIs designed value of the compressive strength of common steel bars, a'sIs the distance from the longitudinal common reinforcing steel resultant force point of the compression area to the compression edge of the cross section, A'sThe cross section area of the longitudinal common steel bar of the compression area;
area calculation of the tensioned steel bars:
wherein x is the height of the concrete compression zone, A's actualThe actual cross-sectional area of the longitudinal common steel bar of the compression area.
E.g. x < 2 a'sWhen the temperature of the water is higher than the set temperature,
wherein f isyThe design value of the tensile strength of the common steel bar is obtained;
if not, then,
a third embodiment provides a computer-readable storage medium, which includes a stored computer program, where when the computer program runs, the apparatus where the computer-readable storage medium is located is controlled to execute the tunnel design method according to the first embodiment, and the same beneficial effects can be achieved.
In summary, the embodiment of the present invention has the following advantages:
extracting professional data from a professional database, performing load calculation and constraint calculation according to the pre-defined tunnel design parameters and the professional data to obtain tunnel load and tunnel constraint, building a structural calculation model according to the predefined tunnel working condition, the subentry coefficient and the combination value coefficient of the tunnel load under different tunnel working conditions, and calculating internal force based on the structural calculation model to obtain tunnel internal force, extracting tunnel internal force under different tunnel working conditions to perform reinforcement calculation to obtain reinforcement result, continuously adjusting reinforcement results until the strength and deformation of the tunnel structure meet the predefined tunnel design conditions, generating a tunnel structure calculation book according to result data generated in the calculation process, and the result data comprises tunnel load, tunnel constraint, tunnel internal force and reinforcement result, and the tunnel design is completed. The embodiment of the invention automatically performs load calculation, constraint calculation, internal force calculation and reinforcement calculation and automatically generates a tunnel structure calculation book based on professional data stored in a professional database and actual design requirements of tunnel design parameters, tunnel working conditions, tunnel design conditions and the like input by a user, does not need to calculate data through different structure calculation software, and manually integrates data in each structure calculation software to design a tunnel, can realize one-stop tunnel design, and improves the tunnel design efficiency.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
It will be understood by those skilled in the art that all or part of the processes of the above embodiments may be implemented by hardware related to instructions of a computer program, and the computer program may be stored in a computer readable storage medium, and when executed, may include the processes of the above embodiments. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
Claims (10)
1. A method of tunnel design, comprising:
extracting professional data from a professional database, and performing load calculation and constraint calculation according to predefined tunnel design parameters and the professional data to obtain tunnel load and tunnel constraint;
according to the predefined tunnel working condition, and the subentry coefficient and the combined value coefficient of the tunnel load under different tunnel working conditions, establishing a structure calculation model, and performing internal force calculation based on the structure calculation model to obtain the tunnel internal force;
extracting the tunnel internal forces under different tunnel working conditions to perform reinforcement calculation to obtain reinforcement results, and continuously adjusting the reinforcement results until the tunnel structure strength and the tunnel structure deformation meet the predefined tunnel design conditions;
generating a tunnel structure calculation book according to result data generated in the calculation process; wherein the result data comprises the tunnel load, the tunnel constraint, the tunnel internal force and the reinforcement configuration result.
2. The tunnel design method of claim 1, wherein before the extracting professional data from the professional database, performing load calculation and constraint calculation according to the predefined tunnel design parameters and the professional data, and obtaining tunnel load and tunnel constraint, further comprising:
and acquiring the professional data, performing structured storage on the professional data, and establishing the professional database.
3. The method of claim 1, wherein after the extracting the tunnel internal force under different tunnel working conditions and performing reinforcement calculation to obtain a reinforcement result, and continuously adjusting the reinforcement result until the tunnel structure strength and the tunnel structure deformation satisfy predefined design conditions, the method further comprises:
and constructing a tunnel steel bar three-dimensional model according to the latest reinforcement distribution result, and counting to obtain the steel bar engineering quantity based on the tunnel steel bar three-dimensional model.
4. The tunnel design method according to claim 1, wherein the load calculation and the constraint calculation are performed according to predefined tunnel design parameters and the professional data to obtain tunnel loads and tunnel constraints, specifically:
carrying out buried depth calculation according to the tunnel design parameters to obtain tunnel buried depth;
determining the stratum where the tunnel is located according to the tunnel burial depth based on the professional data;
carrying out load calculation according to the tunnel buried depth and the stratum where the tunnel is located to obtain the tunnel load;
and performing constraint calculation according to the stratum where the tunnel is located to obtain the tunnel constraint.
5. The tunneling method according to claim 1, wherein a structural calculation model is established according to predefined tunnel conditions, and the polynomial coefficients and the combination value coefficients of the tunnel load under different tunnel conditions, and internal force calculation is performed based on the structural calculation model to obtain tunnel internal force, specifically:
establishing the structural calculation model according to the tunnel working condition and the polynomial coefficient and the combination value coefficient of the tunnel load under different tunnel working conditions;
and based on the structural calculation model, respectively carrying out internal force calculation on the tunnel in the bearing capacity limit state and the tunnel in the normal use limit state to obtain the tunnel internal force.
6. The tunnel design method according to claim 1, wherein the extracting of the tunnel internal force under different tunnel working conditions is performed with reinforcement calculation to obtain reinforcement results, specifically:
and according to the design specification of the tunnel structure, performing pure bending, bending and shearing calculation on the section of the tunnel according to the internal force of the tunnel, and calculating the width of a crack of the member to obtain the reinforcement result.
7. A tunnel design system, comprising:
the load and constraint calculation module is used for extracting professional data from a professional database, and performing load calculation and constraint calculation according to the pre-defined tunnel design parameters and the professional data to obtain tunnel load and tunnel constraint;
the internal force calculation module is used for establishing a structural calculation model according to a predefined tunnel working condition, and the subentry coefficient and the combined value coefficient of the tunnel load under different tunnel working conditions, and performing internal force calculation based on the structural calculation model to obtain the tunnel internal force;
the reinforcement calculation module is used for extracting the tunnel internal force under different tunnel working conditions to perform reinforcement calculation to obtain a reinforcement result, and continuously adjusting the reinforcement result until the tunnel structure strength and the tunnel structure deformation meet the predefined tunnel design conditions;
the calculation book generation module is used for generating a tunnel structure calculation book according to the result data generated by the calculation module; wherein the result data comprises the tunnel load, the tunnel constraint, the tunnel internal force and the reinforcement configuration result.
8. The tunnel design system of claim 7, further comprising:
and the database establishing module is used for extracting professional data from the professional database, carrying out load calculation and constraint calculation according to the pre-defined tunnel design parameters and the professional data, acquiring the professional data before obtaining tunnel load and tunnel constraint, and carrying out structured storage on the professional data to establish the professional database.
9. The tunnel design system of claim 7, further comprising:
and the reinforcing steel bar quantity counting module is used for extracting the internal force of the tunnel under different tunnel working conditions to carry out reinforcing steel bar distribution calculation to obtain a reinforcing steel bar distribution result, continuously adjusting the reinforcing steel bar distribution result until the strength of the tunnel structure and the deformation of the tunnel structure meet the predefined design conditions, constructing a tunnel reinforcing steel bar three-dimensional model according to the latest reinforcing steel bar distribution result, and counting to obtain the reinforcing steel bar engineering quantity based on the tunnel reinforcing steel bar three-dimensional model.
10. A computer-readable storage medium, comprising a stored computer program, wherein the computer program, when executed, controls an apparatus in which the computer-readable storage medium is located to perform the tunnel design method according to any one of claims 1 to 6.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116306069A (en) * | 2022-11-29 | 2023-06-23 | 四川省交通勘察设计研究院有限公司 | Digital collaborative automatic design method and system for rectangular open cut tunnel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116306069A (en) * | 2022-11-29 | 2023-06-23 | 四川省交通勘察设计研究院有限公司 | Digital collaborative automatic design method and system for rectangular open cut tunnel |
| CN116306069B (en) * | 2022-11-29 | 2023-10-24 | 四川省交通勘察设计研究院有限公司 | Digital collaborative automatic design method and system for rectangular open cut tunnel |
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