Method and device for safety evaluation of reinforced concrete bridge

Abstract

The application provides a reinforced concrete bridge safety evaluation method and device, and the method comprises the following steps: dividing a bridge into a preset number of bridge segmented areas according to the total length of the obtained bridge; determining the danger coefficient corresponding to each bridge segmented area according to a preset crack danger distribution rule; obtaining the crack length, crack width and crack depth of each bridge segmented area, and determining the area index corresponding to each bridge segmented area according to the crack length and crack width; and determining the safety evaluation grade corresponding to each bridge segmented area according to the danger coefficient, crack length, crack width, crack depth and area index. The application realizes accurate safety evaluation of the bridge, quantifies the performance safety of the highway reinforced concrete bridge by using more intuitive, simple and easy-to-understand indexes, achieves the effect that the bridge safety evaluation is stable, the index expression ability is stronger, and the index is easier to obtain, does not need a large number of experiments, and makes the safety evaluation more convenient and fast.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of reinforced concrete bridges, in particular to a reinforced concrete bridge safety evaluation method and device. BACKGROUND

[0002] At present, the research on bridge risk and safety evaluation at home and abroad generally focuses on the design period and construction period of the bridge, and there are few researches on the bridge risk and safety evaluation in the operation period. The operation period is the key period for the bridge engineering to play its role, and the bridge engineering is affected by various risk factors in the operation period, thereby affecting the driving safety. The general bridge structure safety evaluation method (including the analytic hierarchy process, the scoring and sequencing method, the load test method, etc.) is greatly disturbed by factors, and a large amount of manpower and material resources are consumed. As one of the main bridge diseases, the cracks on the surface of the bridge are the concentrated performance of the internal damage reaching a certain dangerous degree. When the crack width reaches 0.2mm or more, the external moisture is easy to enter the inside to accelerate the corrosion of the reinforcement, which may directly damage the integrity of the bridge, greatly reduce the bearing capacity of the bridge, and seriously affect the safe operation of the bridge.

[0003] At present, the disadvantages of the performance safety evaluation of the reinforced concrete bridge of the expressway include that the existing quantitative safety evaluation index cannot well describe the performance safety of the bridge, and the safety performance of the bridge can be expressed only by the aid of the human experience observation; the existing quantitative safety evaluation index needs to be tested separately, so that the measurement is troublesome. SUMMARY

[0004] In view of the problems in the prior art, the main purpose of the embodiments of the present application is to provide a reinforced concrete bridge safety evaluation method and device, which realizes simple, convenient and accurate bridge safety evaluation.

[0005] In order to achieve the above purpose, the embodiments of the present application provide a reinforced concrete bridge safety evaluation method, which comprises the following steps:

[0006] According to the total length of the bridge, the bridge is divided into a preset number of bridge segmented areas;

[0007] According to the preset crack danger distribution rule, the danger coefficient corresponding to each bridge segmented area is determined;

[0008] The crack length, crack width and crack depth of each bridge segmented area are obtained, and according to the crack length and crack width, the area index corresponding to each bridge segmented area is determined;

[0009] According to the danger coefficient, crack length, crack width, crack depth and area index corresponding to each bridge segmented area, the safety evaluation grade corresponding to each bridge segmented area is determined.

[0010] Optionally, in an embodiment of the present application, the crack length includes a total crack length, a cross crack length, and a crack sub-length corresponding to different crack widths.

[0011] Optionally, in an embodiment of the present application, determining the area index corresponding to each bridge segmented area according to the crack length and the crack width includes:

[0012] determining a crack sub-area corresponding to different crack widths according to the crack sub-length corresponding to different crack widths; wherein the crack sub-area belongs to the area index;

[0013] determining a total crack area corresponding to each bridge segmented area according to the crack sub-area corresponding to different crack widths; wherein the total crack area belongs to the area index.

[0014] Optionally, in an embodiment of the present application, determining the area index corresponding to each bridge segmented area according to the crack length and the crack width further includes:

[0015] determining a cross crack area corresponding to each bridge segmented area according to the total crack area and a preset cross continuous effect parameter; wherein the cross crack area belongs to the area index.

[0016] Optionally, in an embodiment of the present application, determining the safety evaluation level corresponding to each bridge segmented area according to the danger coefficient, the crack length, the crack width, the crack depth, and the area index corresponding to each bridge segmented area includes:

[0017] determining a first derived index according to the danger coefficient, the total crack area, and the cross crack area corresponding to each bridge segmented area;

[0018] determining a second derived index and a third derived index according to the obtained bridge surface area, the danger coefficient, the crack sub-area, and the total crack area corresponding to each bridge segmented area;

[0019] determining a fourth derived index according to the danger coefficient and the crack length corresponding to each bridge segmented area;

[0020] determining a fifth derived index according to the danger coefficient, the crack width, and the crack depth corresponding to each bridge segmented area;

[0021] determining the safety evaluation level corresponding to each bridge segmented area according to the first derived index, the second derived index, the third derived index, the fourth derived index, and the fifth derived index.

[0022] An embodiment of the present application further provides a reinforced concrete bridge safety evaluation device, and the device includes:

[0023] The bridge segmentation module is used for dividing the bridge into a preset number of bridge segmentation areas according to the total length of the bridge obtained;

[0024] The risk coefficient module is used for determining the risk coefficient corresponding to each bridge segmentation area according to a preset crack risk distribution rule;

[0025] The area index module is used for obtaining the crack length, crack width and crack depth of each bridge segmentation area, and determining the area index corresponding to each bridge segmentation area according to the crack length and crack width;

[0026] The safety evaluation module is used for determining the safety evaluation grade corresponding to each bridge segmentation area according to the risk coefficient, crack length, crack width, crack depth and area index corresponding to each bridge segmentation area.

[0027] Optionally, in an embodiment of the present application, the crack length includes a total crack length, a cross crack length and a crack sub-length corresponding to different crack widths.

[0028] Optionally, in an embodiment of the present application, the area index module includes:

[0029] The crack sub-area unit is used for determining a crack sub-area corresponding to different crack widths according to the crack sub-length corresponding to different crack widths; wherein the crack sub-area belongs to the area index;

[0030] The total crack area unit is used for determining the total crack area corresponding to each bridge segmentation area according to the crack sub-area corresponding to different crack widths; wherein the total crack area belongs to the area index.

[0031] Optionally, in an embodiment of the present application, the area index module further includes a cross crack area unit used for determining the cross crack area corresponding to each bridge segmentation area according to the total crack area and a preset cross continuity effect parameter; wherein the cross crack area belongs to the area index.

[0032] Optionally, in an embodiment of the present application, the safety evaluation module includes:

[0033] The first derived index unit is used for determining a first derived index according to the risk coefficient, total crack area and cross crack area corresponding to each bridge segmentation area;

[0034] The second derived index unit is used for determining a second derived index and a third derived index according to the bridge surface area obtained, the risk coefficient, crack sub-area and total crack area corresponding to each bridge segmentation area;

[0035] A fourth derivative index unit is configured to determine a fourth derivative index according to the dangerous coefficient and the crack length of each bridge segmented area;

[0036] A fifth derivative index unit is configured to determine a fifth derivative index according to the dangerous coefficient, the crack width and the crack depth of each bridge segmented area;

[0037] A safety evaluation grade unit is configured to determine the safety evaluation grade of each bridge segmented area according to the first derivative index, the second derivative index, the third derivative index, the fourth derivative index and the fifth derivative index.

[0038] The application further provides an electronic device, including a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor executes the program to realize the above method.

[0039] The application further provides a computer readable storage medium, which stores a computer program for executing the above method.

[0040] The application uses the crack length of a bridge to obtain an area index of the bridge, combines the dangerous coefficient of different bridge segmented areas, realizes accurate safety evaluation of the bridge, quantifies the performance safety of a reinforced concrete bridge of an expressway by using more intuitive, simple and understandable indexes, achieves the effects of stable bridge safety evaluation, stronger index expression capability and easier index acquisition, and does not need a large number of experiments, so that the safety evaluation is more convenient and faster. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor.

[0042] Figure 1 A flow chart of a reinforced concrete bridge safety evaluation method in an embodiment of the application;

[0043] Figure 2 A flow chart of determining an area index in an embodiment of the application;

[0044] Figure 3 A flow chart of determining a safety evaluation grade in an embodiment of the application;

[0045] Figure 4 A schematic diagram of a bridge segmented area in an embodiment of the application;

[0046] Figure 5It is a structural schematic view of a reinforced concrete bridge safety evaluation device according to an embodiment of the present application.

[0047] Figure 6 It is a structural schematic view of an area index module according to an embodiment of the present application.

[0048] Figure 7 It is a structural schematic view of a safety evaluation module according to an embodiment of the present application.

[0049] Figure 8 It is a structural schematic view of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0050] The present application provides a reinforced concrete bridge safety evaluation method and device.

[0051] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0052] Since the bridge load crack characteristic indexes (including length, width, depth, area, etc.) are related to the overall performance of the component, the crack characteristic indexes can be used to evaluate the safety of the bridge structure. Figure 1 As shown in Fig. 1, it is a flowchart of a reinforced concrete bridge safety evaluation method according to an embodiment of the present application. The execution subject of the reinforced concrete bridge safety evaluation method provided by the present application includes but is not limited to a computer. The method shown in the figure includes:

[0053] In step S1, the bridge is divided into a preset number of bridge segmented areas according to the total length of the bridge.

[0054] In step S2, the dangerous coefficients corresponding to the bridge segmented areas are determined according to a preset crack danger distribution rule.

[0055] In step S3, the crack length, crack width and crack depth of each bridge segmented area are obtained, and the area index corresponding to each bridge segmented area is determined according to the crack length and crack width.

[0056] In step S4, the safety evaluation grade corresponding to each bridge segmented area is determined according to the dangerous coefficients, crack length, crack width, crack depth and area index corresponding to each bridge segmented area.

[0057] The total 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 length of the bridge and a preset number of segments.

[0058] Further, the dangerous coefficient corresponding to each bridge segment interval is determined according to a preset crack dangerous distribution rule. Figure 4 As shown in the figure, the bridge is divided into a preset number of bridge segment regions, for example, 5, and the bridge is evenly divided into five bridges. Specifically, the total length of the bridge is l, l=5a, and the bridge is evenly divided into 5 segments, each with equal length; the middle segment is defined as region A; the crack distribution dangerous coefficient β A =1.3~1.5, the two segments close to the middle are defined as region B; the crack distribution dangerous coefficient β A =1.15~1.25, and the two segments close to the two sides are defined as region C; the crack distribution dangerous coefficient β A =1.05~1.10.

[0059] As an embodiment of the present application, the crack length includes the total crack length, the cross crack length, and the crack sub-length corresponding to different crack widths.

[0060] The crack length is a length index, and specifically includes: a first length: the total crack length l1; a second length: the cross crack length, i.e., the total length of the cross continuous crack l2; a third length: the length l3 of the crack width w≥0.2mm; a fourth length: the length l4 of the crack width 0.2mm>w≥0.15mm; a fifth length: the length l5 of the crack width w<0.15mm; a sixth length: the widest crack width w1; and a seventh length: the deepest crack depth d. Specifically, l3, l4, and l5 are crack sub-lengths corresponding to different crack widths.

[0061] Further, the crack length (l1-l5) can be directly measured with a ruler; the crack width (w1) can be measured with a crack width measuring instrument; and the crack depth (d1) can be measured by chiseling for the shallow layer and by ultrasonic nondestructive testing for the deep layer.

[0062] In this embodiment, as shown in the figure, the area index corresponding to each bridge segment region is determined according to the crack length and the crack width, including: Figure 2

[0063] Step S31, the crack sub-area corresponding to different crack widths is determined according to the crack sub-length corresponding to different crack widths; wherein the crack sub-area belongs to the area index.

[0064] ​Step S32, determining the total crack area corresponding to each bridge subsection area according to the crack sub-areas corresponding to different crack widths; wherein the total crack area belongs to the area index.

[0065] In the embodiment, the determination of the area index corresponding to each bridge subsection area according to the crack length and the crack width further comprises: determining the cross crack area corresponding to each bridge subsection area according to the total crack area and a preset cross-continuity effect parameter; wherein the cross crack area belongs to the area index.

[0066] The area index specifically comprises: a first type of area, the total crack area s1; a second type of area, the cross crack area, i.e. the total area s2 of the cross-continuity crack; a third type of area, the crack area s3 of the crack with a crack width w≥0.2mm; a fourth type of area, the crack area s4 of the crack with a crack width 0.2mm>w≥0.15mm; a fifth type of area, the crack area s5 of the crack with a crack width w<0.15mm; and a sixth type of area, the surface area s6 of the bridge section. Wherein s3, s4 and s5 are crack sub-areas corresponding to different crack widths, and the surface area s6 of the bridge section can be obtained from the original design data of the bridge.

[0067] Specifically, the total crack area s1 is calculated by formula (1).

[0068]

[0069] Wherein, the total crack length l1=l5+l4+l3.

[0070] The cross-continuity crack area s2 is calculated by formula (2).

[0071]

[0072] Wherein, the cross-continuity crack length l2=l5+l4+l3, and γ=1.02-1.05 is determined by considering the cross-continuity effect of the crack.

[0073] Further, the crack areas s3, s4 and s5 of the cracks with a crack width w≥0.2mm, 0.2mm>w≥0.15mm and w<0.15mm are calculated by formulas (3)-(5) in each type of area.

[0074]

[0075]

[0076]

[0077] Wherein, considering the crack width effect, can be determined according to the crack γ1=1.01-1.03, γ2=1.02-1.04, γ3=1.03-1.05.

[0078] Through the above-mentioned crack length index and area index, and the linear and nonlinear combination of the index, etc., the performance safety of the highway reinforced concrete bridge can be characterized.

[0079] In the embodiment, as shown in Figure 3 The safety evaluation grade corresponding to each bridge segmented area is determined according to the dangerous coefficient, crack length, crack width, crack depth and area index corresponding to each bridge segmented area, and includes:

[0080] Step S41, determining a first derived index according to the dangerous coefficient, total crack area and cross crack area corresponding to each bridge segmented area;

[0081] Step S42, determining a second derived index and a third derived index according to the bridge surface area, the dangerous coefficient, crack sub-area and total crack area corresponding to each bridge segmented area;

[0082] Step S43, determining a fourth derived index according to the dangerous coefficient and crack length corresponding to each bridge segmented area;

[0083] Step S44, determining a fifth derived index according to the dangerous coefficient, crack width and crack depth corresponding to each bridge segmented area;

[0084] Step S45, determining the safety evaluation grade corresponding to each bridge segmented area according to the first derived index, the second derived index, the third derived index, the fourth derived index and the fifth derived index.

[0085] Wherein, the first derived index includes: A area crack (cross continuous crack, crack) area / bridge total crack area, the calculation formula is shown as formula (6)-(7), and the safety evaluation grade is shown as table 1; B area crack (cross continuous crack, crack) area / bridge total crack area, the calculation formula is shown as formula (8)-(9), and the safety evaluation grade is shown as table 2.

[0086]

[0087]

[0088]

[0089]

[0090] Table 1

[0091] Evaluation level Safety condition Equation (6) Equation (7) First level Safe (normal operation) ＜4％ ＜2％ Second level Substantially safe (maintenance required) 4％～6％ 2％～4％ Third level Critically safe (repair required) 6％～9％ 4％～6％ Fourth level Inadequately safe (reinforcement required) 9％～12％ 6％～8％ Fifth level Dangerous (reconstruction required) ＞12％ ＞8％

[0092] Table 2

[0093] Evaluation level Safety condition Equation (8) Equation (9) First level Safe (normal operation) ＜5％ ＜4％ Second level Substantially safe (maintenance required) 5％～8％ 4％～6％ Third level Critically safe (repair required) 8％～11％ 6％～9％ Fourth level Inadequately safe (reinforcement required) 11％～13％ 9％～12％ Fifth level Dangerous (reconstruction required) ＞13％ ＞12％

[0094] The second derivative index is: bridge crack (w≥0.2 mm, 0.2 mm>w≥0.15 mm) area / total bridge crack area, the calculation formula corresponding to w≥0.2 mm is shown as formula (10), the calculation formula corresponding to 0.2 mm>w≥0.15 mm is shown as formula (11), and the safety evaluation level is shown as Table 3.

[0095]

[0096]

[0097] Table 3

[0098] Evaluation level Safety condition Equation (10) Equation (11) First level Safe (normal operation) ＜3％ ＜5％ Second level Substantially safe (maintenance required) 3％～5％ 5％～7％ Third level Critically safe (repair required) 5％～7％ 7％～10％ Fourth level Inadequately safe (reinforcement required) 7％～10％ 10％～12％ Fifth level Dangerous (reconstruction required) ＞10％ ＞12％

[0099] The third derivative index is: bridge crack (total crack, w≥0.2 mm) area / total bridge surface area, the calculation formula corresponding to the total crack is shown as formula (12), the calculation formula corresponding to w≥0.2 mm is shown as formula (13), and the safety evaluation level is shown as Table 4.

[0100]

[0101]

[0102] Table 4

[0103] Evaluation level Safety condition Equation (12) Equation (13) First level Safe (normal operation) ＜0.005％ ＜0.003％ Second level Substantially safe (maintenance required) 0.005％～0.007％ 0.003％～0.005％ Third level Critically safe (repair required) 0.007％～0.0010％ 0.005％～0.008％ Fourth level Inadequately safe (reinforcement required) 0.0010％～0.0012％ 0.008％～0.0010％ Fifth level Dangerous (reconstruction required) ＞0.0012％ ＞0.0010％

[0104] The fourth derivative index is: bridge crack (cross continuous crack, w≥0.2 mm, 0.2 mm>w≥0.15 mm) length / total bridge crack length, the calculation formula corresponding to the cross continuous crack is shown as formula (14), the calculation formula corresponding to w≥0.2 mm is shown as formula (15), the calculation formula corresponding to 0.2 mm>w≥0.15 mm is shown as formula (16), and the safety evaluation level is shown as Table 5.

[0105]

[0106]

[0107]

[0108] Table 5

[0109]

[0110] The fifth derived index is a bridge crack in the A area (the deepest and the widest), and the calculation formula is shown in formulas (17) and (18), and the safety evaluation level is shown in Table 6.

[0111]

[0112]

[0113] Table 6

[0114] Evaluation level Safety condition Equation (17) Equation (18) First level Safe (normal operation) ＜8％ ＜5％ Second level Substantially safe (maintenance required) 8％～16％ 5％～8％ Third level Critically safe (repair required) 16％～25％ 8％～10％ Fourth level Inadequately safe (reinforcement required) 25％～40％ 10％～15％ Fifth level Dangerous (reconstruction required) ＞40％ ＞15％

[0115] The safety evaluation level of the reinforced concrete bridge can be comprehensively obtained by using the calculation formula of the derived index and the corresponding safety evaluation level, for example, the lowest safety evaluation level of the first to fifth derived indexes of a bridge is four, and then the safety evaluation level of the bridge is four. In addition, according to the safety evaluation levels of different bridge segmented areas, the safety maintenance of each bridge segmented area is performed, so that the reliability of the bridge safety is ensured, and the efficiency of the bridge maintenance is greatly improved, and the labor cost is saved.

[0116] The area index of the bridge is obtained by using the bridge crack length, the accurate safety evaluation of the bridge is realized by combining the danger coefficients of different bridge segmented areas, the performance safety of the reinforced concrete bridge of the expressway is quantified by using more intuitive, simple and easy-to-understand indexes, the effects of stable bridge safety evaluation, stronger index expression ability and easier index acquisition are achieved, a large number of experiments are not needed, and the safety evaluation is more convenient and fast.

[0117] As Figure 5 shown is a structural schematic diagram of a reinforced concrete bridge safety evaluation device according to an embodiment of the present application, and the device shown in the figure comprises:

[0118] A bridge segmentation module 10 is used for dividing the bridge into a preset number of bridge segmented areas according to the obtained total length of the bridge.

[0119] A danger coefficient module 20 is used for determining the danger coefficients corresponding to the bridge segmented areas according to a preset crack danger distribution rule.

[0120] An area index module 30 is used for obtaining the crack length, crack width and crack depth of each bridge segmented area, and determining the area index corresponding to each bridge segmented area according to the crack length and crack width.

[0121] A safety evaluation module 40 is used for determining the safety evaluation levels corresponding to the bridge segmented areas according to the danger coefficients, crack lengths, crack widths, crack depths and area indexes corresponding to the bridge segmented areas.

[0122] As an embodiment of the present application, the crack length includes a total crack length, a cross crack length, and a crack sub-length corresponding to different crack widths.

[0123] In the embodiment, as shown in Figure 6 the area index module 30 comprises:

[0124] a crack sub-area unit 31, configured to determine crack sub-areas corresponding to different crack widths according to the crack sub-lengths corresponding to the different crack widths; wherein the crack sub-areas belong to the area index;

[0125] a total crack area unit 32, configured to determine total crack areas corresponding to the bridge segmented areas according to the crack sub-areas corresponding to the different crack widths; wherein the total crack areas belong to the area index.

[0126] In the embodiment, as shown in Figure 6 the area index module 30 further comprises a cross crack area unit 33, configured to determine cross crack areas corresponding to the bridge segmented areas according to the total crack areas and a preset cross continuity effect parameter; wherein the cross crack areas belong to the area index.

[0127] In the embodiment, as shown in Figure 7 the safety evaluation module 40 comprises:

[0128] a first derived index unit 41, configured to determine a first derived index according to the danger coefficients corresponding to the bridge segmented areas, the total crack areas, and the cross crack areas;

[0129] a second derived index unit 42, configured to determine a second derived index and a third derived index according to the obtained bridge surface areas, the danger coefficients corresponding to the bridge segmented areas, the crack sub-areas, and the total crack areas;

[0130] a fourth derived index unit 43, configured to determine a fourth derived index according to the danger coefficients corresponding to the bridge segmented areas and the crack lengths;

[0131] a fifth derived index unit 44, configured to determine a fifth derived index according to the danger coefficients corresponding to the bridge segmented areas, crack widths, and crack depths;

[0132] a safety evaluation grade unit 45, configured to determine safety evaluation grades corresponding to the bridge segmented areas according to the first derived index, the second derived index, the third derived index, the fourth derived index, and the fifth derived index.

[0133] Based on the same application concept as the above-mentioned steel reinforced concrete bridge safety evaluation method, the application further provides the above-mentioned steel reinforced concrete bridge safety evaluation device. Since the principle of solving the problem of the steel reinforced concrete bridge safety evaluation device is similar to that of the steel reinforced concrete bridge safety evaluation method, the implementation of the steel reinforced concrete bridge safety evaluation device can be referred to the implementation of the steel reinforced concrete bridge safety evaluation method, and the repeated parts will not be described herein.

[0134] The application uses the bridge crack length to obtain the area index of the bridge, combines the danger coefficients of different bridge segmented areas, realizes accurate safety evaluation of the bridge, quantifies the performance safety of the highway steel reinforced concrete bridge by using more intuitive, simple and easy-to-understand indexes, achieves the effects of stable bridge safety evaluation, stronger index expression ability and easier index acquisition, does not need a large number of experiments, and makes the safety evaluation more convenient and fast.

[0135] The application further provides an electronic device, including a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor executes the program to realize the above-mentioned method.

[0136] The application further provides a computer readable storage medium, which stores a computer program for executing the above-mentioned method.

[0137] As shown in Figure 8 , the electronic device 600 can further include a communication module 110, an input unit 120, an audio processing unit 130, a display 160, and a power supply 170. It is worth noting that the electronic device 600 does not necessarily include all the components shown in Figure 8 ; in addition, the electronic device 600 can further include components not shown in Figure 8 , which can be referred to the prior art.

[0138] As shown in Figure 8 , the central processor 100, also known as a controller or an operation control, can include a microprocessor or other processor device and / or a logic device, which receives input and controls the operation of each component of the electronic device 600.

[0139] The memory 140, for example, can be one or more of a cache, a flash memory, a hard drive, a removable media, a volatile memory, a non-volatile memory or other suitable device. The above-mentioned information related to failure can be stored, and in addition, programs for executing the information can be stored. The central processor 100 can execute the programs stored in the memory 140 to realize information storage or processing, etc.

[0140] The input unit 120 provides input to the central processing unit 100. The input unit 120 is, for example, a key or touch input device. The power supply 170 is used to supply power to the electronic device 600. The display 160 is used to display display objects such as images and text. The display can be, for example, an LCD display, but is not limited thereto.

[0141] The memory 140 can be a solid state memory such as a read only memory (ROM), a random access memory (RAM), a SIM card, etc. It can also be a memory that retains information even when power is off, can be selectively erased, and is provided with more data, an example of which is sometimes referred to as an EPROM, etc. The memory 140 can also be some other type of device. The memory 140 includes a buffer memory 141 (sometimes referred to as a buffer). The memory 140 can include an application / function storage section 142 for storing application programs and function programs or a flow for executing the operation of the electronic device 600 by the central processing unit 100.

[0142] The memory 140 can also include a data storage section 143 for storing data such as contacts, digital data, pictures, sounds, and / or any other data used by the electronic device. A driver storage section 144 of the memory 140 can include various drivers of the electronic device for a communication function and / or for performing other functions of the electronic device such as a messaging application, an address book application, etc.

[0143] 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 processing unit 100 to provide input signals and receive output signals, which can be the same as in the case of a conventional mobile communication terminal.

[0144] 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, etc. can 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, thereby implementing a general telecommunication function. The audio processor 130 can include any suitable buffer, decoder, amplifier, etc. In addition, the audio processor 130 is also coupled to the central processing unit 100, thereby enabling recording on the local device through the microphone 132 and enabling playing of a sound stored on the local device through the speaker 131.

[0145] Those skilled in the art will appreciate that embodiments of the present application can be readily used as software, hardware, or a combination of software and hardware. In a software embodiment, the methods can be tangibly embodied in a machine-readable storage medium having stored thereon instructions that can be used to program a computer to perform any of the operations described herein. The software implementation can be for example, in the form of a computer program product. The software implementation can be implemented in a centralized fashion in one computer system or network, or be distributed over a network such computer systems, some of which can implement the

[0146] The present application is described in relation to flow diagrams and / or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It is understood that each block of the flow diagrams and / or block diagrams, and combinations of blocks in the flow diagrams and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can 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 flow diagrams and / or block diagrams block or blocks. Figure 1 one or more functions specified in the flow diagram and / or block diagram block or blocks. Figure 1 one or more functions specified in the flow diagram and / or block diagram block or blocks.

[0147] These computer program instructions can 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 instructions which implement the flow diagram and / or block diagram block or blocks. Figure 1 one or more functions specified in the flow diagram and / or block diagram block or blocks. Figure 1 one or more functions specified in the flow diagram and / or block diagram block or blocks.

[0148] These computer program instructions can 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 flow diagram and / or block diagram block or blocks. Figure 1 one or more functions specified in the flow diagram and / or block diagram block or blocks. Figure 1 one or more functions specified in the flow diagram and / or block diagram block or blocks.

[0149] The principles and implementation of the present application are described in the detailed description of specific embodiments. The above description of the embodiments is only for the purpose of understanding the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation and application range will be changed; in view of the above, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A method of safety assessment of a reinforced concrete bridge, characterized by, The method comprises: According to the total length of the bridge obtained, the bridge is divided into a preset number of bridge segment areas; According to the preset crack risk distribution rule, the risk coefficient corresponding to each bridge segment area is determined; The crack length, crack width and crack depth of each bridge segment area are obtained, and according to the crack length and crack width, the area index corresponding to each bridge segment area is determined, the area index including the total crack area, the cross crack area, the crack sub-area corresponding to different crack widths and the bridge surface area; According to the risk coefficient, crack length, crack width, crack depth and area index corresponding to each bridge segment area, the safety evaluation grade corresponding to each bridge segment area is determined; The crack length includes the total crack length, the cross crack length and the crack sub-length corresponding to different crack widths; According to the risk coefficient, crack length, crack width, crack depth and area index corresponding to each bridge segment area, the safety evaluation grade corresponding to each bridge segment area is determined, which comprises: According to the risk coefficient, total crack area and cross crack area corresponding to each bridge segment area, a first derived index is determined; According to the obtained bridge surface area, the risk coefficient, crack sub-area and total crack area corresponding to each bridge segment area, a second derived index and a third derived index are determined; According to the risk coefficient and crack length corresponding to each bridge segment area, a fourth derived index is determined; According to the risk coefficient, crack width and crack depth corresponding to each bridge segment area, a fifth derived index is determined; According to the first derived index, second derived index, third derived index, fourth derived index and fifth derived index, the safety evaluation grade corresponding to each bridge segment area is determined.

2. The method of claim 1, wherein, According to the crack length and crack width, the area index corresponding to each bridge segment area is determined, which comprises: According to the crack sub-length corresponding to different crack widths, the crack sub-area corresponding to different crack widths is determined; wherein the crack sub-area belongs to the area index; According to the crack sub-area corresponding to different crack widths, the total crack area corresponding to each bridge segment area is determined; wherein the total crack area belongs to the area index.

3. The method of claim 2, wherein, According to the crack length and crack width, the area index corresponding to each bridge segment area is determined, which further comprises: According to the total crack area and the preset cross continuous effect parameter, the cross crack area corresponding to each bridge segment area is determined; wherein the cross crack area belongs to the area index.

4. A reinforced concrete bridge safety evaluation device characterized by, The device comprises: A bridge segmentation module for dividing the bridge into a preset number of bridge segment areas according to the total length of the bridge obtained; A risk coefficient module for determining the risk coefficient corresponding to each bridge segment area according to the preset crack risk distribution rule; An area index module for obtaining the crack length, crack width and crack depth of each bridge segment area, and determining the area index corresponding to each bridge segment area according to the crack length and crack width, the area index including the total crack area, the cross crack area, the crack sub-area corresponding to different crack widths and the bridge surface area; The security evaluation module is configured to determine the security evaluation grade of each bridge segmented area according to the danger coefficient, the crack length, the crack width, the crack depth and the area index of each bridge segmented area. The crack length includes a total crack length, a cross crack length and a crack sub-length corresponding to different crack widths. The security evaluation module includes: A first derived index unit configured to determine a first derived index according to the danger coefficient, the total crack area and the cross crack area of each bridge segmented area. A second derived index unit configured to determine a second derived index and a third derived index according to the bridge surface area, the danger coefficient, the crack sub-area and the total crack area of each bridge segmented area. A fourth derived index unit configured to determine a fourth derived index according to the danger coefficient and the crack length of each bridge segmented area. A fifth derived index unit configured to determine a fifth derived index according to the danger coefficient, the crack width and the crack depth of each bridge segmented area. A security evaluation grade unit configured to determine the security evaluation grade of each bridge segmented area according to the first derived index, the second derived index, the third derived index, the fourth derived index and the fifth derived index.

5. The apparatus of claim 4, wherein, The area index module includes: A crack sub-area unit configured to determine a crack sub-area corresponding to different crack widths according to the crack sub-length corresponding to different crack widths; wherein the crack sub-area belongs to the area index. A total crack area unit configured to determine the total crack area of each bridge segmented area according to the crack sub-area corresponding to different crack widths; wherein the total crack area belongs to the area index.

6. The apparatus of claim 5, wherein, The area index module further includes a cross crack area unit configured to determine the cross crack area of each bridge segmented area according to the total crack area and a preset cross continuous effect parameter; wherein the cross crack area belongs to the area index.

7. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The processor executes the computer program to implement the method of any one of claims 1 to 3.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program for executing the method of any one of claims 1 to 3.

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