CN114626680A - Safety assessment method and device for reinforced concrete bridge - Google Patents
Safety assessment method and device for reinforced concrete bridge Download PDFInfo
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Abstract
The invention provides a method and a device for evaluating the safety of a reinforced concrete bridge, wherein the method comprises the following steps: dividing the bridge into bridge segment areas with preset number according to the acquired total length of the bridge; determining a danger coefficient corresponding to each bridge segmentation area according to a preset crack danger distribution rule; acquiring the crack length, crack width and crack depth of each bridge segmentation region, and determining the area index corresponding to each bridge segmentation region according to the crack length and crack width; and determining the safety evaluation level corresponding to each bridge segmentation region according to the risk coefficient, the crack length, the crack width, the crack depth and the area index. The method realizes accurate safety assessment of the bridge, quantifies the performance safety of the reinforced concrete bridge on the highway by using more intuitive, simple and understandable indexes, achieves the effects of stable safety assessment of the bridge, stronger index expression capability and easier index acquisition, does not need a large amount of experiments, and ensures that the safety assessment is more convenient and faster.
Description
Technical Field
The invention relates to the field of reinforced concrete bridges, in particular to a safety assessment method and device for a reinforced concrete bridge.
Background
At present, the research on bridge risk and safety assessment at home and abroad is generally less aiming at the bridge design period and the construction period and aiming at the bridge risk and safety assessment at the operation period. The operation period is a key period for the bridge engineering to play a role, and the bridge engineering is influenced by various risk factors in the operation period, so that the driving safety is influenced. General bridge structure safety assessment methods (including analytic hierarchy process, scoring sorting method, load test method and the like) are greatly interfered by factors, and simultaneously, a large amount of manpower and material resources are consumed. The bridge crack is one of the most main bridge diseases, the crack appears on the bridge surface is the concentrated performance that the internal damage reaches certain dangerous degree, when the crack width reaches more than 0.2mm, external steam gets into inside reinforcing bar corrosion with higher speed easily, probably directly destroys the bridge wholeness, makes the bridge bearing capacity very reduce, seriously influences the safe operation of bridge.
At present, the defects of the performance safety assessment of the reinforced concrete bridge of the expressway comprise: the existing quantitative safety evaluation indexes cannot well describe the safety of the bridge performance, and the safety performance of the bridge can be expressed only by assisting artificial experience observation; the existing quantitative safety evaluation index needs to be separately tested, so that the measurement is troublesome.
Disclosure of Invention
Aiming at the problems in the prior art, the embodiment of the invention mainly aims to provide a method and a device for evaluating the safety of a reinforced concrete bridge, so that the bridge safety evaluation is simple, convenient and accurate.
In order to achieve the above object, an embodiment of the present invention provides a method for evaluating safety of a reinforced concrete bridge, where the method includes:
dividing the bridge into bridge segment areas with preset number according to the acquired total length of the bridge;
determining a danger coefficient corresponding to each bridge segmentation area according to a preset crack danger distribution rule;
acquiring the crack length, crack width and crack depth of each bridge segmentation region, and determining the area index corresponding to each bridge segmentation region according to the crack length and crack width;
and determining the safety evaluation level corresponding to each bridge segmentation region according to the risk coefficient, the crack length, the crack width, the crack depth and the area index corresponding to each bridge segmentation region.
Optionally, in an embodiment of the present invention, the fracture length includes a total fracture length, a cross fracture length, and fracture sub-lengths corresponding to different fracture widths.
Optionally, in an embodiment of the present invention, determining the area index corresponding to each bridge segment region according to the crack length and the crack width includes:
determining the area of the crack corresponding to different crack widths according to the length of the crack corresponding to different crack widths; wherein the fracture area belongs to the area index;
determining the total crack area corresponding to each bridge segmentation area according to the crack sub-areas corresponding to different crack widths; wherein the total area of the cracks belongs to the area index.
Optionally, in an embodiment of the present invention, the determining the area index corresponding to each bridge segment region according to the crack length and the crack width further includes:
determining the cross crack area corresponding to each bridge segment area according to the total crack area and a preset cross continuous effect parameter; wherein the cross-crack area belongs to the area index.
Optionally, in an embodiment of the present invention, the determining, according to the risk coefficient, the crack length, the crack width, the crack depth, and the area index corresponding to each bridge segment region, the safety assessment level corresponding to each bridge segment region includes:
determining a first derivative index according to the risk coefficient, the total crack area and the cross crack area corresponding to each bridge segment area;
determining a second derivative index and a third derivative index according to the acquired bridge surface area, the risk coefficient corresponding to each bridge segment area, the crack sub-area and the crack total area;
determining a fourth derivative index according to the risk coefficient and the crack length corresponding to each bridge segment area;
determining a fifth derivative index according to the risk coefficient, the crack width and the crack depth corresponding to each bridge segment area;
and determining the safety evaluation level corresponding to each bridge segment area according to the first derivative index, the second derivative index, the third derivative index, the fourth derivative index and the fifth derivative index.
The embodiment of the invention also provides a safety assessment device for the reinforced concrete bridge, which comprises:
the bridge segmentation module is used for dividing the bridge into bridge segmentation areas with preset number according to the acquired total bridge length;
the risk coefficient module is used for determining the risk coefficient corresponding to each bridge segment area according to a preset crack risk distribution rule;
the area index module is used for acquiring the crack length, the crack width and the crack depth of each bridge segmentation region and determining the area index corresponding to each bridge segmentation region according to the crack length and the crack width;
and the safety evaluation module is used for determining the safety evaluation level corresponding to each bridge segmentation region according to the risk coefficient, the crack length, the crack width, the crack depth and the area index corresponding to each bridge segmentation region.
Optionally, in an embodiment of the present invention, the fracture length includes a total fracture length, a cross fracture length, and fracture sub-lengths corresponding to different fracture widths.
Optionally, in an embodiment of the present invention, the area indicator module includes:
the crack sub-area unit is used for determining the crack sub-areas corresponding to different crack widths according to the crack sub-lengths corresponding to the different crack widths; wherein the fracture area belongs to the area index;
the total crack area unit is used for determining the total crack area corresponding to each bridge segmentation area according to the sub-crack areas corresponding to different crack widths; wherein the total area of the cracks belongs to the area index.
Optionally, in an embodiment of the present invention, the area indicator module further includes: the cross crack area unit is used for determining the cross crack area corresponding to each bridge segment area according to the total crack area and a preset cross continuous effect parameter; wherein the cross-crack area belongs to the area index.
Optionally, in an embodiment of the present invention, the security evaluation module includes:
the first derivative index unit is used for determining a first derivative index according to the risk coefficient, the total crack area and the cross crack area corresponding to each bridge segmentation region;
the second derivative index unit is used for determining a second derivative index and a third derivative index according to the acquired surface area of the bridge, the risk coefficient corresponding to each bridge segmentation region, the fracture sub-area and the total fracture area;
the fourth derivative index unit is used for determining a fourth derivative index according to the risk coefficient and the crack length corresponding to each bridge segment area;
the fifth derivative index unit is used for determining a fifth derivative index according to the risk coefficient, the crack width and the crack depth corresponding to each bridge segmentation area;
and the safety evaluation grade unit is used for determining the safety evaluation grade corresponding to each bridge segment area according to the first derivative index, the second derivative index, the third derivative index, the fourth derivative index and the fifth derivative index.
The invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method when executing the program.
The present invention also provides a computer-readable storage medium storing a computer program for executing the above method.
According to the method, the area index of the bridge is obtained by utilizing the crack length of the bridge, the accurate safety assessment of the bridge is realized by combining the danger coefficients of different bridge segment areas, the performance safety of the reinforced concrete bridge of the highway is quantified by using more visual, simple and understandable indexes, the effects of stable safety assessment of the bridge, stronger index expression capability and more easily obtained indexes are achieved, and a large number of experiments are not needed, so that the safety assessment is more convenient and faster.
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 will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a flow chart of a method for evaluating safety of a reinforced concrete bridge according to an embodiment of the present invention;
FIG. 2 is a flow chart of determining an area indicator according to an embodiment of the present invention;
FIG. 3 is a flow chart of determining a security assessment rating in an embodiment of the present invention;
FIG. 4 is a schematic diagram of a bridge segment area according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a reinforced concrete bridge safety assessment apparatus according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of an area indicator module according to an embodiment of the present disclosure;
FIG. 7 is a schematic structural diagram of a security assessment module according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a safety assessment method and device for a reinforced concrete bridge.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Because the characteristic indexes (including length, width, depth, area and the like) of the bridge load crack have certain relation with the overall performance of the member, the crack characteristic indexes can be utilized to carry out safety assessment on the bridge structure. As shown in fig. 1, a flowchart of a method for evaluating safety of a reinforced concrete bridge according to an embodiment of the present invention is shown, and an execution subject of the method for evaluating safety of a reinforced concrete bridge according to an embodiment of the present invention includes, but is not limited to, a computer. The method shown in the figure comprises the following steps:
step S1, dividing the bridge into bridge segment areas with preset number according to the acquired total length of the bridge;
step S2, determining the risk coefficient corresponding to each bridge segment area according to the preset crack risk distribution rule;
step S3, acquiring the crack length, crack width and crack depth of each bridge segmentation region, and determining the area index corresponding to each bridge segmentation region according to the crack length and crack width;
and step S4, determining the safety evaluation level corresponding to each bridge segmentation region according to the risk coefficient, crack length, crack width, crack depth and area index corresponding to each bridge segmentation region.
The total bridge length of the reinforced concrete bridge can be directly measured on site or obtained from original design data of the bridge, and the bridge is segmented according to the total bridge length and the preset number of segments.
Further, according to a preset crack danger distribution rule, a danger coefficient corresponding to each bridge subsection interval is determined. As shown in fig. 4, the bridge is divided into a preset number of bridge segment areas, and if the preset number is, for example, 5, the bridge is divided into five bridges on average. Specifically, the total length of the bridge is l, and l is 5a, the bridge is divided into 5 sections on average, and the lengths of the sections are equal; taking the middle section as an area A; fracture distribution risk coefficient betaA1.3-1.5, and two sections in the middle are defined as a B area; fracture distribution risk coefficient betaA1.15-1.25, and two sections at two sides are defined as a C area; fracture distribution risk coefficient betaA＝1.05～1.10。
As one embodiment of the invention, the fracture lengths include the total fracture length, the cross-fracture length, and the fracture sub-lengths corresponding to different fracture widths.
Wherein, crack length is length class index, specifically includes: the first type of length: total length of crack l1(ii) a Length of the second type: length of intersecting slits, i.e. total length of intersecting continuous slits l2(ii) a Length of the third type: the length l of the crack width w is more than or equal to 0.2mm3(ii) a Length of the fourth type: the width of the crack is more than 0.2mm and the length l of w is more than or equal to 0.15mm4(ii) a Length of the fifth type: length l of crack width w < 0.15mm5(ii) a Length of the sixth type: maximum width w of crack1(ii) a Length of the seventh type: the crack is deepest by depth d. Specifically, l3、l4And l5Are the slit sub-lengths corresponding to different slit widths.
Further, the crack length (l 1-l 5) can be directly measured by a ruler; crack width (w 1): a crack width gauge may be employed; crack depth (d 1): the superficial layer is treated by chiseling, and the deep layer crack is detected by ultrasonic nondestructive detection.
In this embodiment, as shown in fig. 2, determining the area index corresponding to each bridge segment region according to the crack length and the crack width includes:
step S31, determining the area of the crack corresponding to different crack widths according to the lengths of the crack corresponding to different crack widths; wherein, the area of the fissure belongs to the area index;
step S32, determining the total crack area corresponding to each bridge segment area according to the crack sub-areas corresponding to different crack widths; wherein, the total area of the crack belongs to the area index.
In this embodiment, determining the area index corresponding to each bridge segment region according to the crack length and the crack width further includes: determining the cross crack area corresponding to each bridge segment area according to the total crack area and a preset cross continuous effect parameter; wherein the cross crack area belongs to the area index.
Wherein, the area index specifically includes: area of the first type: total area of crack s1(ii) a Area of the second type: cross-slit area, i.e. total area of cross-continuous slits s2(ii) a Area of the third type: crack area s with crack width w not less than 0.2mm3(ii) a Area of the fourth type: crack area s with crack width of 0.2mm and w of more than or equal to 0.15mm4(ii) a Area of the fifth type: crack width w < 0.15mm crack area s5(ii) a Area of the sixth type: surface area s of bridge section6. Wherein s is3、s4And s5Surface area s of the bridge section for the area of the crack sub-corresponding to different crack widths6Can be obtained from original design data of the bridge.
In particular, the total area s of the cracks1The calculation is performed using equation (1).
Wherein the total length of the crack l1＝l5+l4+l3。
Cross continuous fracture area s2The calculation is performed using equation (2).
Wherein the length l of the intersecting continuous slit2＝l5+l4+l3And determining gamma to be 1.02-1.05 by considering the crack cross-continuity effect.
Furthermore, the crack area s with the crack width w more than or equal to 0.2mm, the crack width w more than 0.2mm and more than or equal to 0.15mm and the crack width w less than 0.15mm3、s4、s5: equations (3) - (5) are used for the calculations in each type of region.
Wherein, taking into account the crack width effect, γ can be determined from the crack1＝1.01～1.03、γ2＝1.02～1.04、γ3＝1.03～1.05。
The performance safety of the reinforced concrete bridge of the expressway can be represented by the obtained crack length index and area index, and the linear and nonlinear combination of the indexes and other results.
In this embodiment, as shown in fig. 3, determining the safety evaluation level corresponding to each bridge segment region according to the risk coefficient, the crack length, the crack width, the crack depth, and the area index corresponding to each bridge segment region includes:
step S41, determining a first derivative index according to the risk coefficient, the total crack area and the cross crack area corresponding to each bridge segment area;
step S42, determining a second derivative index and a third derivative index according to the acquired bridge surface area, the risk coefficient corresponding to each bridge segment area, the crack sub-area and the crack total area;
step S43, determining a fourth derivative index according to the risk coefficient and the crack length corresponding to each bridge segment area;
step S44, determining a fifth derivative index according to the risk coefficient, the crack width and the crack depth corresponding to each bridge segmentation area;
and step S45, determining the safety evaluation level corresponding to each bridge segment area according to the first derivative index, the second derivative index, the third derivative index, the fourth derivative index and the fifth derivative index.
Wherein the first derivation index includes: the area of the cracks (crossed continuous cracks and cracks) in the area A/the total crack area of the bridge is shown in formulas (6) to (7), and the safety evaluation grade is shown in table 1; the area of the crack (cross continuous crack and crack) in the B region/the total crack area of the bridge is shown in formulas (8) to (9), and the safety evaluation grade is shown in Table 2.
TABLE 1
| Rating of evaluation | Safety situation | Formula (6) | Formula (7) |
| First stage | Safety (Normal operation) | ＜4％ | ＜2％ |
| Second stage | Basic safety (need maintenance) | 4％～6％ | 2％～4％ |
| Three-stage | Critical safety (need to repair) | 6％～9％ | 4％～6％ |
| Four stages | Safety deficiency (need to reinforce) | 9％～12％ | 6％～8％ |
| Five stages | Danger (reconstruction and reconstruction) | ＞12％ | ＞8％ |
TABLE 2
| Rating of evaluation | Safety situation | Formula (8) | Formula (9) |
| First stage | Safety (Normal operation) | ＜5％ | ＜4％ |
| Second stage | Basic safety (need maintenance) | 5％～8％ | 4％～6％ |
| Three-stage | Critical safety (need to be repaired) | 8％～11％ | 6％～9％ |
| Four stages | Safety deficiency (need to reinforce) | 11％～13％ | 9％～12％ |
| Five stages | Danger (reconstruction and reconstruction) | ＞13％ | ＞12％ |
Wherein the second derivation index: the area of the bridge cracks (w is more than or equal to 0.2mm, 0.2mm is more than w is more than or equal to 0.15 mm)/the total crack area of the bridge, the calculation formula corresponding to the w is more than or equal to 0.2mm is shown in a formula (10), the calculation formula corresponding to the w is more than 0.2mm is more than or equal to 0.15mm is shown in a formula (11), and the safety evaluation grade is shown in a table 3.
TABLE 3
| Rating of evaluation | Safety situation | Formula (10) | Formula (11) |
| First level | Safety (Normal operation) | ＜3％ | ＜5％ |
| Second order | Basic safety (need maintenance) | 3％～5％ | 5％～7％ |
| Three-stage | Critical safety (need to be repaired) | 5％～7％ | 7％～10％ |
| Four stages | Safety deficiency (need to reinforce) | 7％～10％ | 10％～12％ |
| Five stages | Danger (reconstruction and reconstruction) | ＞10％ | ＞12％ |
Wherein the third derivation index: the area of the bridge cracks (total cracks, w is more than or equal to 0.2 mm)/the total surface area of the bridge, the calculation formula corresponding to the total cracks is shown in a formula (12), the calculation formula corresponding to the w is more than or equal to 0.2mm is shown in a formula (13), and the safety evaluation grade is shown in a table 4.
TABLE 4
| Rating of evaluation | Safety situation | Formula (12) | Formula (13) |
| First stage | Safety (Normal operation) | ＜0.005％ | ＜0.003％ |
| Second stage | Basic safety (need maintenance) | 0.005％～0.007％ | 0.003％～0.005％ |
| Three-stage | Critical safety (need to be repaired) | 0.007％～0.0010％ | 0.005％～0.008％ |
| Four stages | Safety deficiency (need to reinforce) | 0.0010％～0.0012％ | 0.008％～0.0010％ |
| Five stages | Danger (reconstruction and reconstruction) | ＞0.0012％ | ＞0.0010％ |
Wherein the fourth derivation index: the length of the bridge cracks (cross continuous cracks, w is more than or equal to 0.2mm and more than or equal to 0.15 mm)/the length of the bridge overall cracks, the calculation formula corresponding to the cross continuous cracks is shown as a formula (14), the calculation formula corresponding to the w is more than or equal to 0.2mm is shown as a formula (15), the calculation formula corresponding to the w is more than or equal to 0.2mm is shown as a formula (16), and the safety evaluation grade is shown as table 5.
TABLE 5
Wherein the fifth derivation index: the crack (deepest and widest) of the bridge in the area A is calculated according to the formulas (17) to (18), and the safety evaluation grade is shown in Table 6.
TABLE 6
| Rating of evaluation | Safety situation | Formula (17) | Formula (18) |
| First stage | Safety (Normal operation) | ＜8％ | ＜5％ |
| Second stage | Basic safety (need maintenance) | 8％～16％ | 5％～8％ |
| Three-stage | Critical safety (need to be repaired) | 16％～25％ | 8％～10％ |
| Four stages | Safety deficiency (need to reinforce) | 25％～40％ | 10％～15％ |
| Five stages | Danger (reconstruction and reconstruction) | ＞40％ | ＞15％ |
By using the calculation formula of the derivative indexes and the corresponding safety assessment grades, the safety assessment grades of the reinforced concrete bridges can be comprehensively obtained, for example, if the lowest safety assessment grade in the first to fifth derivative indexes corresponding to a certain bridge is four grades, the safety assessment grade of the bridge is determined to be four grades. In addition, according to the safety assessment levels corresponding to different bridge segmentation areas, safety maintenance is respectively carried out on the bridge segmentation areas, and therefore the bridge maintenance efficiency can be greatly improved and the labor cost can be saved while the reliable safety of the bridge is guaranteed.
According to the method, the area index of the bridge is obtained by utilizing the crack length of the bridge, the accurate safety assessment of the bridge is realized by combining the danger coefficients of different bridge segment areas, the performance safety of the reinforced concrete bridge of the highway is quantified by using more visual, simple and understandable indexes, the effects of stable safety assessment of the bridge, stronger index expression capability and more easily obtained indexes are achieved, and a large number of experiments are not needed, so that the safety assessment is more convenient and faster.
Fig. 5 is a schematic structural diagram of a reinforced concrete bridge safety assessment apparatus according to an embodiment of the present invention, where the apparatus includes:
the bridge segmentation module 10 is configured to divide the bridge into bridge segmentation areas with a preset number according to the acquired total bridge length;
the risk coefficient module 20 is configured to determine a risk coefficient corresponding to each bridge segment area according to a preset crack risk distribution rule;
the area index module 30 is configured to obtain a crack length, a crack width, and a crack depth of each bridge segment region, and determine an area index corresponding to each bridge segment region according to the crack length and the crack width;
and the safety evaluation module 40 is used for determining the safety evaluation level corresponding to each bridge segmentation region according to the risk coefficient, the crack length, the crack width, the crack depth and the area index corresponding to each bridge segmentation region.
As one embodiment of the invention, the fracture lengths include the total fracture length, the cross-fracture length, and the fracture sub-lengths corresponding to different fracture widths.
In the present embodiment, as shown in fig. 6, the area index module 30 includes:
a crack sub-area unit 31 for determining the crack sub-areas corresponding to different crack widths according to the crack sub-lengths corresponding to different crack widths; wherein, the area of the crack belongs to the area index;
the total crack area unit 32 is used for determining the total crack area corresponding to each bridge segmentation area according to the sub-crack areas corresponding to different crack widths; wherein, the total area of the crack belongs to the area index.
In this embodiment, as shown in fig. 6, the area indicator module 30 further includes: the cross crack area unit 33 is used for determining the cross crack area corresponding to each bridge segment area according to the total crack area and the preset cross continuous effect parameters; wherein the cross-crack area belongs to the area index.
In the present embodiment, as shown in fig. 7, the security evaluation module 40 includes:
the first derivative index unit 41 is configured to determine a first derivative index according to the risk coefficient, the total crack area, and the cross crack area corresponding to each bridge segment region;
the second derivative index unit 42 is configured to determine a second derivative index and a third derivative index according to the acquired bridge surface area, the risk coefficient corresponding to each bridge segment region, the fracture sub-area, and the total fracture area;
a fourth derivative index unit 43, configured to determine a fourth derivative index according to the risk coefficient and the crack length corresponding to each bridge segment region;
a fifth derivative index unit 44, configured to determine a fifth derivative index according to the risk coefficient, the crack width, and the crack depth corresponding to each bridge segment region;
and a safety evaluation grade unit 45, configured to determine a safety evaluation grade corresponding to each bridge segment region according to the first derivative index, the second derivative index, the third derivative index, the fourth derivative index, and the fifth derivative index.
Based on the same application concept as the safety assessment method for the reinforced concrete bridge, the invention also provides the safety assessment device for the reinforced concrete bridge. The principle of solving the problems of the reinforced concrete bridge safety assessment device is similar to that of a reinforced concrete bridge safety assessment method, so that the implementation of the reinforced concrete bridge safety assessment device can refer to the implementation of the reinforced concrete bridge safety assessment method, and repeated parts are not repeated.
According to the method, the area index of the bridge is obtained by utilizing the crack length of the bridge, the accurate safety assessment of the bridge is realized by combining the danger coefficients of different bridge segment areas, the performance safety of the reinforced concrete bridge of the highway is quantified by using more visual, simple and understandable indexes, the effects of stable safety assessment of the bridge, stronger index expression capability and more easily obtained indexes are achieved, and a large number of experiments are not needed, so that the safety assessment is more convenient and faster.
The invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method when executing the program.
The present invention also provides a computer-readable storage medium storing a computer program for executing the above method.
As shown in fig. 8, the electronic device 600 may further include: communication module 110, input unit 120, audio processing unit 130, display 160, power supply 170. It is noted that the electronic device 600 does not necessarily include all of the components shown in FIG. 8; furthermore, the electronic device 600 may also comprise components not shown in fig. 8, which may be referred to in the prior art.
As shown in fig. 8, the central processor 100, sometimes referred to as a controller or operation control, may include a microprocessor or other processor device and/or logic device, the central processor 100 receiving input and controlling the operation of the various components of the electronic device 600.
The memory 140 may be, for example, one or more of a buffer, a flash memory, a hard drive, a removable media, a volatile memory, a non-volatile memory, or other suitable device. The information relating to the failure may be stored, and a program for executing the information may be stored. And the central processing unit 100 may execute the program stored in the memory 140 to realize information storage or processing, etc.
The input unit 120 provides input to the cpu 100. The input unit 120 is, for example, a key or a touch input device. The power supply 170 is used to provide power to the electronic device 600. The display 160 is used to display an object to be displayed, such as an image or a character. The display may be, for example, an LCD display, but is not limited thereto.
The memory 140 may be a solid state memory such as Read Only Memory (ROM), Random Access Memory (RAM), a SIM card, or the like. There may also be a memory that holds information even when power is off, can be selectively erased, and is provided with more data, an example of which is sometimes called an EPROM or the like. The memory 140 may also be some other type of device. Memory 140 includes buffer memory 141 (sometimes referred to as a buffer). The memory 140 may include an application/function storage section 142, and the application/function storage section 142 is used to store application programs and function programs or a flow for executing the operation of the electronic device 600 by the central processing unit 100.
The memory 140 may also include a data store 143, the data store 143 for storing data, such as contacts, digital data, pictures, sounds, and/or any other data used by the electronic device. The driver storage portion 144 of the memory 140 may include various drivers of the electronic device for communication functions and/or for performing other functions of the electronic device (e.g., messaging application, address book application, etc.).
The communication module 110 is a transmitter/receiver 110 that transmits and receives signals via an antenna 111. The communication module (transmitter/receiver) 110 is coupled to the central processor 100 to provide an input signal and receive an output signal, which may be the same as in the case of a conventional mobile communication terminal.
Based on different communication technologies, a plurality of communication modules 110, such as a cellular network module, a bluetooth module, and/or a wireless local area network module, may be provided in the same electronic device. The communication module (transmitter/receiver) 110 is also coupled to a speaker 131 and a microphone 132 via an audio processor 130 to provide audio output via the speaker 131 and receive audio input from the microphone 132 to implement general telecommunications functions. Audio processor 130 may include any suitable buffers, decoders, amplifiers and so forth. In addition, an audio processor 130 is also coupled to the central processor 100, so that recording on the local can be enabled through a microphone 132, and so that sound stored on the local can be played through a speaker 131.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (12)
1. A safety assessment method for a reinforced concrete bridge is characterized by comprising the following steps:
dividing the bridge into bridge segment areas with preset number according to the acquired total length of the bridge;
determining a danger coefficient corresponding to each bridge segmentation area according to a preset crack danger distribution rule;
acquiring the crack length, crack width and crack depth of each bridge segmentation region, and determining the area index corresponding to each bridge segmentation region according to the crack length and crack width;
and determining the safety evaluation grade corresponding to each bridge segment area according to the risk coefficient, the crack length, the crack width, the crack depth and the area index corresponding to each bridge segment area.
2. The method of claim 1, wherein the fracture lengths comprise a total fracture length, a cross fracture length, and fracture sub-lengths corresponding to different fracture widths.
3. The method of claim 2, wherein the determining the area index corresponding to each bridge segment region according to the crack length and the crack width comprises:
determining the areas of the cracks corresponding to different crack widths according to the lengths of the cracks corresponding to different crack widths; wherein the fracture area belongs to the area index;
determining the total crack area corresponding to each bridge segmentation area according to the crack sub-areas corresponding to different crack widths; wherein the total area of the cracks belongs to the area index.
4. The method according to claim 3, wherein the determining the area index corresponding to each bridge segment region according to the crack length and the crack width further comprises:
determining the cross crack area corresponding to each bridge segment area according to the total crack area and a preset cross continuous effect parameter; wherein the cross-crack area belongs to the area index.
5. The method of claim 4, wherein the determining the safety assessment level corresponding to each bridge segment region according to the risk factor, the crack length, the crack width, the crack depth and the area index corresponding to each bridge segment region comprises:
determining a first derivative index according to the risk coefficient, the total crack area and the cross crack area corresponding to each bridge segment area;
determining a second derivative index and a third derivative index according to the obtained bridge surface area, the risk coefficient corresponding to each bridge segment area, the crack sub-area and the total crack area;
determining a fourth derivative index according to the risk coefficient and the crack length corresponding to each bridge segment area;
determining a fifth derivative index according to the risk coefficient, the crack width and the crack depth corresponding to each bridge segment area;
and determining the safety evaluation level corresponding to each bridge segment area according to the first derivative index, the second derivative index, the third derivative index, the fourth derivative index and the fifth derivative index.
6. A reinforced concrete bridge safety assessment device, characterized in that the device comprises:
the bridge segmentation module is used for dividing the bridge into bridge segmentation areas with preset number according to the acquired total bridge length;
the risk coefficient module is used for determining the risk coefficient corresponding to each bridge segment area according to a preset crack risk distribution rule;
the area index module is used for acquiring the crack length, the crack width and the crack depth of each bridge segmentation region and determining the area index corresponding to each bridge segmentation region according to the crack length and the crack width;
and the safety evaluation module is used for determining the safety evaluation level corresponding to each bridge segmentation region according to the risk coefficient, the crack length, the crack width, the crack depth and the area index corresponding to each bridge segmentation region.
7. The apparatus of claim 6, wherein the fracture lengths comprise a total fracture length, a cross fracture length, and fracture sub-lengths corresponding to different fracture widths.
8. The apparatus of claim 7, wherein the area indicator module comprises:
the crack sub-area unit is used for determining the crack sub-areas corresponding to different crack widths according to the crack sub-lengths corresponding to the different crack widths; wherein the fracture area belongs to the area index;
the total crack area unit is used for determining the total crack area corresponding to each bridge segmentation area according to the sub crack areas corresponding to different crack widths; wherein the total area of the cracks belongs to the area index.
9. The apparatus of claim 8, wherein the area indicator module further comprises: the cross crack area unit is used for determining the cross crack area corresponding to each bridge segment area according to the total crack area and a preset cross continuous effect parameter; wherein the cross-crack area belongs to the area index.
10. The apparatus of claim 9, wherein the security assessment module comprises:
the first derivative index unit is used for determining a first derivative index according to the risk coefficient, the total crack area and the cross crack area corresponding to each bridge segmentation region;
the second derivative index unit is used for determining a second derivative index and a third derivative index according to the acquired surface area of the bridge, the risk coefficient corresponding to each bridge segmentation region, the fracture sub-area and the total fracture area;
the fourth derivative index unit is used for determining a fourth derivative index according to the risk coefficient and the crack length corresponding to each bridge segment area;
the fifth derivative index unit is used for determining a fifth derivative index according to the risk coefficient, the crack width and the crack depth corresponding to each bridge segmentation area;
and the safety evaluation grade unit is used for determining the safety evaluation grade corresponding to each bridge segment area according to the first derivative index, the second derivative index, the third derivative index, the fourth derivative index and the fifth derivative index.
11. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of any one of claims 1 to 5 when executing the computer program.
12. A computer-readable storage medium, characterized in that it stores a computer program for executing the method of any one of claims 1 to 5.
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| CN117541234A (en) * | 2023-12-04 | 2024-02-09 | 南京新鸿运物业管理股份有限公司 | Engineering maintenance diagnosis system and method based on big data |
| CN117541234B (en) * | 2023-12-04 | 2024-04-26 | 南京新鸿运物业管理股份有限公司 | Engineering maintenance diagnosis system and method based on big data |
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