JP2007033085A - Life cycle cost evaluation system of steel structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a life cycle cost evaluation system of a steel structure capable of properly evaluating the load resistance properties of the steel structure in harbor and ocean facilities to set an accurate repairing plan. <P>SOLUTION: This life cycle cost evaluation system is constituted so that the corrosion state of the constituent member (steel pipe pile or steel sheet pile) in the steel structure is estimated by a corrosion speed estimating processing means 53 and the unit stress degree in a state that the effective member cross section of the constituent member is reduced by corrosion is calculated by a structure diagnosing processing means 55 to properly evaluate the load resistance properties of the constituent member. According, the life cycle cost of the steel structure in the harbor and ocean facilities can be calculated with high precision and the labor or cost related to the maintenance control of the facilities can be sharply reduced. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a life cycle cost evaluation system for steel structures in harbors and offshore facilities.

Conventionally, a life cycle cost evaluation system for a concrete structure is known (see, for example, Patent Document 1).
The life cycle cost evaluation system described in Patent Literature 1 includes a database including weather environment data, regional concrete blending data, evaluation target structure data, map data, and each of these data, points, and evaluation target concrete structures. And a means for calculating a concrete degradation index and life cycle cost based on characteristic data, and processing each digitized data using a computer, thereby reducing the life cycle cost related to maintenance management. It can be calculated efficiently and was devised to systematically check and repair concrete structures.
In addition to Patent Document 1, a life cycle cost evaluation system for a superstructure of a concrete structure in a pier that is one of harbor facilities and a life cycle cost evaluation system for a sluice facility have been devised. .

JP 2003-161693 A

However, although a life cycle cost evaluation system for a concrete structure such as Patent Document 1 and a life cycle cost evaluation system for other structures have been proposed, steel structures, particularly seawater There is no life cycle cost evaluation system for steel structures in harbors and offshore facilities that are significantly affected by corrosion (rust), and its development has been desired.
In other words, in steel structures in harbors and offshore facilities, the cross-section of steel structural members that are effective in terms of yield strength gradually decreases due to corrosion (thin wall thickness is thin), and the load-bearing properties with the reduced cross-section of the members are appropriate. It is important to formulate a repair plan after evaluating it and calculate the life cycle cost based on it. However, since the conventional life cycle cost evaluation system does not evaluate the load bearing properties of structures considering corrosion, this system was used as a life cycle cost evaluation system for steel structures in harbors and offshore facilities. However, an appropriate evaluation result cannot be obtained, and an accurate repair plan cannot be formulated.

  The objective of this invention is providing the life cycle cost evaluation system of the steel structure which can evaluate appropriately the load bearing property of the steel structure in a harbor and an offshore facility, and can devise an exact repair plan.

  The life cycle cost evaluation system for a steel structure according to claim 1 of the present invention is a life cycle cost evaluation system for a steel structure in a harbor or offshore facility, and stores an input means for inputting information and various types of information. Storage means, display means for displaying information, and processing means for processing the information. The storage means includes facility management information including construction records and design conditions of the facility, and a steel structure. Constituent member information including member lists of constituent members such as steel pipe piles and steel sheet piles to be configured, and anticorrosion countermeasure construction method information including an anticorrosion countermeasure construction method applied to the constituent members are stored, and the processing means includes the Corrosion rate estimation processing means for estimating the corrosion rate of the component, management standard input processing means for inputting the management standard of the facility from the input means, and anticorrosion countermeasure construction method in the anticorrosion countermeasure construction method information Measure plan selection processing means displayed on the display means and selected from the input means, diagnosis processing means for diagnosing the component, diagnosis of the input management standard, the selected anticorrosion countermeasure construction method, and diagnosis of the diagnosis processing means Life cycle cost calculation means for calculating the life cycle cost of the steel structure based on the result, the corrosion rate estimation processing means select at least two types of corrosion rate estimation formulas for each part of the component, And the corrosion rate is estimated for each part of the constituent member based on the selected corrosion rate estimation formula, and the countermeasure plan selection processing means determines any anticorrosion countermeasure construction method from the anticorrosion countermeasure construction method information for each part of the constituent member. The diagnostic processing means for each part of the component calculated by the selected anticorrosion countermeasure method and the estimated corrosion rate. Based on the effective member cross-section and the applied load of the design condition included in the facility management information, the stress intensity ratio generated for each part of the component member is calculated, and the input facility management standard and the calculated The life cycle cost calculation means displays the cost associated with the anticorrosion countermeasure construction method selected by the countermeasure plan selection processing means on the display means. Features.

  Here, the steel structure life cycle cost evaluation system of the present invention is preferably a system in which each function of the input means, storage means, display means, and processing means is realized by a computer, and is executed by this computer. It may be a program. In the case of a program, it is preferably recorded on a computer-readable recording medium (an internal recording medium or an external recording medium). And when the life cycle cost evaluation system for steel structures is a program, the input means is composed of an input device such as a keyboard, a numeric keypad, and a mouse, and the storage means is composed of a storage device such as a hard disk and a memory. The means is preferably constituted by a display device such as a CRT display or a liquid crystal display, and the processing means is preferably constituted by a processing device (control device) such as a CPU. As a recording medium for recording the program, a memory device or a hard disk device (HDD) as an internal recording medium, a CD, a DVD, a USB memory, or the like as an external recording medium can be used.

According to the present invention described above, the corrosion rate of the structural member in the steel structure is estimated by the corrosion rate estimation processing means, and the stress degree ratio is calculated by the diagnostic processing means in a state where the effective member cross section of the structural member is reduced due to this corrosion. By doing so, it is possible to appropriately evaluate the load bearing properties of the constituent members, and it is possible to formulate an accurate repair plan. Therefore, the life cycle cost of the steel structure in the port facility or marine facility can be calculated with high accuracy, and the labor and cost related to the maintenance of the facility can be greatly reduced.
In addition, by providing facility management information including construction records, design conditions, etc., it is possible to collectively manage the management history from the time of construction of the facility to the present, and to prepare a repair plan for the future. The accuracy in formulation can be improved. In other words, facility construction records and design materials (calculations, drawings, etc.) have often been stored in the form of paper, which has been very troublesome in formulating a repair plan. By storing the facility management information as electronic data in the storage means as in this life cycle cost evaluation system, the handling of the information becomes much easier, and the effort for formulating a repair plan can be further reduced. .

Furthermore, the life cycle cost evaluation system for a steel structure according to claim 2 of the present invention is the life cycle cost evaluation system for a steel structure according to claim 1, wherein the storage means includes a past in the steel structure. The countermeasure history information including the countermeasure records of anticorrosion, repair, reinforcement, etc. applied to is stored.
According to such a configuration, it is possible to further improve the accuracy when diagnosing the constituent members by storing the countermeasure records taken in the past as countermeasure history information, and to develop a more accurate repair plan. Can be formulated.

The life cycle cost evaluation system for a steel structure according to claim 3 of the present invention is the life cycle cost evaluation system for a steel structure according to claim 1 or 2, wherein the countermeasure plan selection processing means is One or more construction periods in a predetermined period in the future from the planning time and an arbitrary anti-corrosion countermeasure construction method to be implemented at each construction period are selected.
According to such a configuration, it is possible to formulate a flexible repair plan according to the future facility use plan, etc., by arbitrarily selecting the construction time and anticorrosion countermeasure construction method, and reducing the life cycle cost. This can be done efficiently.

  A life cycle cost evaluation system for a steel structure according to claim 4 of the present invention is the life cycle cost evaluation system for a steel structure according to any one of claims 1 to 3, wherein the corrosion rate estimation is performed. The processing means selects any one of the three estimation formulas of the corrosion rate estimation formula based on the actual measurement data, the corrosion rate estimation formula based on the environmental factors, and the corrosion rate estimation formula based on the user input. If a corrosion rate estimation formula based on the above is selected, the corrosion rate is estimated based on the corrosion rate estimation formula set in advance from the corrosion data measured in a plurality of predetermined facilities, and the corrosion rate estimation formula based on environmental factors Is selected, the environmental factor information input field is displayed on the display means, and the corrosion rate is estimated based on the corrosion rate estimation formula using the input environmental factor information as a parameter. When a corrosion rate estimation formula based on user input is selected, an input field for the corrosion rate estimation formula is displayed on the display means, and the corrosion rate is estimated based on the entered corrosion rate estimation formula. It is characterized by doing.

According to such a configuration, the user of the system can arbitrarily select the corrosion rate estimation formula from the three estimation formulas according to the location conditions of the facility, the surrounding environmental conditions, etc. Accuracy can be improved. Here, the corrosion rate estimation formula may be not only a general formula but also a numerical value representing the corrosion rate. At this time, as the corrosion rate estimation formula based on the actual measurement data, the actual measurement data released by public institutions may be used, or the actual measurement data independently investigated by the user may be used. May be set. In addition, the environmental factors in the corrosion rate estimation formula based on environmental factors include seawater hydrogen ion concentration (pH, pH), chloride ion concentration (Cl ⁻ ), ammonia ion concentration (NH ₃ ⁺ ), conductivity, Examples include dissolved oxygen amount (DO) and water temperature. Furthermore, if the user can set the corrosion rate independently, the user may directly input the corrosion rate estimation formula.
In addition, since such a corrosion rate estimation formula can be set for each part of the constituent member, the condition of each part (for example, whether it is in the sea or in the atmosphere) is reflected, and more The corrosion rate for each part can be estimated in detail.

Furthermore, the steel structure life cycle cost evaluation system according to claim 5 of the present invention is the steel structure life cycle cost evaluation system according to any one of claims 1 to 4, wherein the processing means includes: , Provided with a coating film soundness evaluation means for evaluating the soundness of the coating film in consideration of the deterioration of the coating film applied to the surface of the component member, the coating film soundness evaluation means, the rust generation area of the coating film surface The input column of the rate and the elapsed years of the coating film is displayed on the display means, and the remaining life of the coating film is calculated based on the input rust generation area ratio and the elapsed years.
According to such a configuration, the non-corrosion period of the component member is calculated by calculating the soundness (residual life of the coating film) of the coating film applied to the surface of the component member based on the rust generation area ratio and the elapsed years. Thus, the progress of corrosion in the steel structure can be grasped more accurately.

A life cycle cost evaluation system for a steel structure according to claim 6 of the present invention is the life cycle cost evaluation system for a steel structure according to any one of claims 1 to 5, wherein the storage means includes Is stored stress calculation formula information including a stress calculation formula corresponding to the type of the structural member such as the steel pipe pile and steel sheet pile, the diagnostic processing means from the stress calculation formula information according to the type of the structural member A stress calculation formula is selected, and a stress analysis is performed for each component based on the selected stress calculation formula to calculate a stress ratio.
According to such a configuration, the stress calculation formula corresponding to the type of component member is built in, so that the stress analysis of the component member can be performed quickly and accurately, and the diagnostic accuracy and speed for each component member are improved. Can be made.

A steel structure life cycle cost evaluation system according to claim 7 of the present invention is the steel structure life cycle cost evaluation system according to any one of claims 1 to 6, wherein The parts to be evaluated are the middle part of the earth located below the seabed, the middle part of the sea above the middle part of the sea and below the sea level at low tide, and the middle part of the sea. The tidal part located below the sea level at the time of high tide on the upper side, the splashing part exposed to the splash of seawater above this tidal part, and the atmospheric part exposed to the atmosphere above this splashing part It is characterized by comprising.
According to such a configuration, the corrosion rate and member cross-section, etc. that are different for each part are evaluated by dividing the constituent parts for each part of the middle of the sea, the middle, the tidal part, the splash part, and the atmospheric part. Diagnosis and countermeasure plan selection that appropriately evaluates can be executed, and life cycle cost calculation accuracy can be further improved.

At this time, the life cycle cost evaluation system for a steel structure according to claim 8 of the present invention is the life cycle cost evaluation system for a steel structure according to any one of claims 1 to 7, wherein the anticorrosion measure is used. The construction method information is characterized in that, for each anticorrosion measure construction method, construction method specifications, useful life, applicable structural members, applicable structural member parts, and unit price data are input.
According to such a configuration, each type of data on construction method specifications, useful life, applicable structural member, applicable structural member part, and unit price is input for each anticorrosion countermeasure method. The construction method can be easily selected and the life cycle cost can be calculated quickly. Here, the anti-corrosion measure construction method information is configured to be able to be additionally registered at any time when a new construction method is developed or put into practical use, and among the above data, in particular, the unit price can be corrected at any time when it is changed. It is desirable to be configured.

  According to the life cycle cost evaluation system for a steel structure of the present invention as described above, it is possible to appropriately evaluate the load bearing property of the steel structure in a harbor or offshore facility and to formulate an accurate repair plan.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a life cycle cost (LCC) evaluation system for a steel structure according to an embodiment of the present invention. FIG. 2 is a flowchart showing the operation of the LCC evaluation system. 3 and 4 are cross-sectional views showing a steel pipe pile P1 and a steel sheet pile P2 as constituent members of a steel structure, which are evaluation targets of the LCC evaluation system, respectively.
The LCC evaluation system for steel structures is a life cycle cost evaluation system for steel structures in harbor facilities, and is realized by the computer 1. In the following, the steel structure of the port facility will be described, but the facility of the present invention may be a marine facility, and this marine facility can be exemplified by a steel structure in an oil drilling jacket in the open ocean, The structural members include steel beams and diagonal members (section steel, pipes).

As shown in FIG. 3, the steel pipe pile P1 is driven into the seabed to support a concrete structure such as a pier, and is composed of an upper pile, a middle pile (middle pile 1) each made of a steel pipe having a predetermined thickness. , Medium pile 2 etc.) and lower pile. And the steel pipe pile P1 is divided into five parts consisting of the middle part of the sea, the middle part, the middle part, the tidal part, the splash part, and the atmospheric part from the bottom with respect to the length direction, and the later-described LCC evaluation is made. Yes. Here, the middle part of the soil is the portion of the steel pipe pile P1 that is driven into the sea soil below the bottom of the sea, and the middle part is the sea level at the time of low tide above the middle part of the sea soil. The part located below (LWL), the tidal part is the part located above the sea level and below the sea level (HWL) at high tide. The splash portion is a portion exposed to the splash of seawater above the tidal portion, and the atmospheric portion is a portion exposed to the atmosphere above the splash portion.
On the other hand, as shown in FIG. 4, the steel sheet pile P2 is driven into the seabed to support earth pressure at the revetment (quay), and has a corrugated cross-section having a predetermined plate thickness, and parallel steel pipes. It consists of And the steel sheet pile P2 is divided into five parts which consist of a sea soil part, a sea part, a tidal part, a splash part, and an atmospheric part like the steel pipe pile P1, and is LCC-evaluated.

1 and 2, a computer 1 includes a display device (display means) 2 such as a CRT display and a liquid crystal display, an input device (input means) 3 such as a keyboard, a numeric keypad, and a mouse, and a printing device such as a printer and a plotter (printing). Means) 4, a processing device (processing means, control device) 5 such as a CPU, and a storage device (storage means) 6 such as a hard disk and a memory.
The computer 1 may use a stand-alone computer used by an administrator who manages a port facility, or a communication device such as a modem, a terminal adapter, or a router, and various electric communications such as ISDN, ADSL, CATV, and optical fiber. A computer connected to the server device using a line may be used. In the case of a computer connected to the server device, a hard disk or memory provided on the server device side may be used as the storage device (storage means) 6, and processing such as a CPU provided on the server device side The device (processing means) 5 may be used.

In the storage device 6 of the computer 1, the structure information 61 which is information on the structure of the port facility, the anticorrosion measure construction method information table 62 applied to the steel pipe pile P1 and the steel sheet pile P2, and the corrosion of the steel pipe pile P1 and the steel sheet pile P2 are stored. Corrosion rate estimation formula information 63 for estimating the speed, component member standard table 64 which is standard information of the steel pipe pile P1 and steel sheet pile P2, and stress calculation for executing stress analysis of the steel pipe pile P1 and steel sheet pile P2. Formula information 65 is stored.
The structure information 61 includes a facility management information table 611 including construction records and design conditions of a port facility, a component information table 612 including a member list of the steel pipe pile P1 and the steel sheet pile P2, and a steel pipe pile. A countermeasure history information table 613 including countermeasure records such as anticorrosion, repair, reinforcement, etc. applied to P1 and steel sheet pile P2 in the past is stored.
The corrosion rate estimation formula information 63 stores a corrosion rate estimation formula 631 based on actual measurement data and a corrosion rate estimation formula 632 based on environmental factors.

The processing device 5 includes a structure input processing means 51 and an anticorrosion countermeasure construction method input processing means 52 for inputting information to the structure information 61 and the anticorrosion countermeasure construction method information table 62 of the storage device 6. Furthermore, the processing device 5 uses various information stored in the storage device 6 to evaluate the life cycle cost of the steel structure, and assists these various processing devices 53 to 57. The coating film soundness evaluation means 58 as a function, the drawing processing means 591 for displaying a chart on the display device 2 based on the processing results of the various processing means 53 to 57, and the printing process for printing with the printing device 4 Means 592.
As various processing means for evaluating the life cycle cost, the corrosion rate estimation processing means 53, the countermeasure plan selection processing means 54, the structure diagnosis processing means 55, the management reference input processing means 56, and the life cycle cost calculation. Means 57 are provided.
In the present embodiment, each processing means is implemented by a program that is incorporated in the computer 1 and executed by the processing device 5.

Further, the processing device 5 is provided with processing menu display means (not shown) that is activated first when the present LCC evaluation system is activated. By this processing menu display means, the processing menu shown in FIG. 100 is displayed on the display device 2.
The processing menu 100 includes a structure menu 101 for operating the structure input processing unit 51 to execute new registration, update, and deletion of data in the structure information 61, and form printing for executing form printing. A menu 102 and a method list menu 103 for operating the anticorrosion measure method input processing means 52 to newly register, update, and delete data in the anticorrosion measure method information table 62 are provided.
Further, the processing menu 100 includes a degradation state / structure diagnosis menu for operating the corrosion rate estimation processing means 53, the countermeasure plan selection processing means 54, the structure diagnosis processing means 55, and the management reference input processing means 56. 104, LCC evaluation menus 105 and 106 for operating the life cycle cost calculating means 57, and a coating film soundness evaluation menu 107 for operating the coating film soundness evaluating means 58 are provided. The LCC evaluation menu includes an LCC evaluation (structural member) menu 105 for performing an LCC evaluation in units of structural members (steel pipe piles P1 and steel sheet piles P2) of a steel structure, and an LCC evaluation for performing an LCC evaluation on the entire steel structure ( Structure) menu 106.
The processing menu 100 is provided with an end menu 108 for ending the LCC evaluation system.

The processing procedure in the LCC evaluation system of the present embodiment as described above will be described with reference to the flowchart of FIG.
First, when the LCC evaluation system is activated, a processing menu 100 is displayed on the display device 2 (step 1, hereinafter, step is abbreviated as “S”).
When the structure menu 101 is selected in the process menu 100 (S2), the structure input processing means 51 is activated and the process is executed (S3).
The structure input processing means 51 displays various information screens and input screens on the display device 2, and displays facility management information related to harbor facilities and component information related to steel pipe piles P1 and steel sheet piles P2 that are components of steel structures. The user is input from the input device 3 and the input information is stored in the structure information 61 of the storage device 6.

The structure input processing means 51 first displays the structure list menu 110 shown in FIG. 6 on the display device 2 of the computer 1. The structure list menu 110 includes a structure list 111, a new registration button 112, an edit button 113, a structural member list button 114, a facility management history list button 115, and a menu for displaying a processing menu 100. A return button 116 is displayed.
The structure list 111 includes “facility name (quay name)”, “factory / business name”, “prefecture”, “city”, “construction year”, and “construction year”. The data on the port facilities are displayed in the column.

When one port facility in the structure list 111 is selected (double-clicked) or the edit button 113 is selected (clicked) in the structure list menu 110, the structure information menu 120 shown in FIG. 7 is displayed. . Here, when the new registration button 112 is selected (clicked), the structure information menu 120 with no data input is displayed.
The structure information menu 120 includes a structure data input field 121, a facility floor plan field 122, a facility position diagram field 123, a facility sectional view field 124, a facility photo field 125, a registration button 126, and a delete button. 127, a reset button 128, and a return to list button 129 for displaying the structure list menu 110 are displayed.

  In the structure data input field 121 of the structure information menu 120, “owner (company name)”, “factory / business name”, “facility name (quay name)”, “facility structure type”, etc. The data including the construction record is displayed, and each of these data can be input and edited. Then, after inputting and editing each data, if the registration button 126 is selected (clicked), the port facility input and edited is registered, and the data is stored in the structure information 61 of the storage device 6. ing. On the other hand, when the delete button 127 of the structure information menu 120 is selected (clicked), the data regarding the port facility being displayed is deleted from the structure information 61 of the storage device 6. Further, when the reset button 128 is selected (clicked), the data input and edited in the structure data input field 121 is deleted, and the data before editing is displayed again. Also, by selecting (clicking) the “Load File” button in the facility plan view field 122, the facility location diagram field 123, the facility sectional view field 124, and the facility photo field 125, image data files of various drawings and photographs can be selected. It becomes possible, and image data can be displayed in each column 122-125 by selecting.

As described above, if the port facility data is input to the structure information menu 120 and registered, and the button 129 for returning to the list is selected (clicked), the structure list menu 110 of FIG. 6 is displayed again and registered. The port facilities that have been displayed are displayed in the new structure list 111.
When the structural member list button 114 is selected (clicked) in the structure information menu 120, a structural member list menu 130 shown in FIG. 8 is displayed. The structural member list menu 130 displays detailed information of the steel structure in the port facility, and information stored in the constituent member information table 612 of the storage device 6 is displayed. In the structural member list menu 130, a facility name selection field 131, a type selection button 132 for selecting a type of a structural member (steel pipe pile or steel sheet pile / steel pipe sheet pile), a structural member list 133 for displaying a list of structural members, and A new registration button 134, an edit button 135, an anticorrosion measure result button 136 for displaying anticorrosion measure history information, and a return to structure list button 137 for displaying the structure list menu 110 are displayed. .

  In the structural member list menu 130, select a facility name in the facility name selection field 131 and select a component in the component list 133 with the type selection button 132 selected (double-click). ) Or the edit button 135 is selected (clicked), a steel pipe pile information menu 140 shown in FIG. 9 and a steel sheet pile / steel sheet pile information menu 150 shown in FIG. 10 are displayed. Here, when the new registration button 134 is selected (clicked), the steel pipe pile information menu 140 or the steel sheet pile / steel pipe sheet pile information menu 150 in which no data is input is displayed.

  In order to display the design condition input field 141, the detailed information input field 142 of the steel pipe pile P1, the registration button 143, the delete button 144, the reset button 145, and the structural member list menu 130 in the steel pipe pile information menu 140. A return button 146 is displayed. In the design condition input field 141, “design height (work surface height)”, “sea floor level”, “sea level at low tide (LWL)”, “sea level at high tide” of the steel pipe pile P1. (HWL) ”,“ Design seismic intensity ”,“ Design water depth ”,“ Ground average N value ”,“ Ground reaction force coefficient ”,“ Load handling equipment ”,“ Design reference book used ”,“ Load conditions ” Data including design conditions such as “input year” is displayed, and each of these data can be input and edited. In the detailed information input field 142, data such as “specification” and “design load conditions” of the steel pipe pile P1, “member cross-section information” such as the diameter and thickness of each of the upper pile, the middle pile, and the lower pile are stored. In addition to being displayed, each of these data can be input and edited. And if each data of the design condition input column 141 and the detailed information input column 142 is input and edited and the registration button 143 is selected (clicked), the input and edited steel pipe pile P1 is registered, and the data is stored in the storage device. 6 is stored in the component information table 612. On the other hand, when the delete button 144 is selected (clicked), the data related to the steel pipe pile P1 being displayed is deleted from the component member information table 612. Further, when the reset button 145 is selected (clicked), the data input and edited in the design condition input field 141 and the detailed information input field 142 are deleted, and the data before editing is displayed again.

  The steel sheet pile / pipe pipe sheet pile information menu 150 includes a design condition input column 151, a detailed information input column 152 of a steel sheet pile P2 (or a steel pipe sheet pile), a registration button 153, a delete button 154, a reset button 155, and a structure. A list return button 156 for displaying the member list menu 130 is displayed. In the design condition input field 151, the “design height (work surface height)”, “sea floor level”, “sea level at low tide (LWL)”, “sea level at high tide” of the steel sheet pile P2 are displayed. (HWL) ”,“ Design Seismic Intensity ”,“ Residual Groundwater Level ”,“ Upload ”,“ Design Reference Book Used ”,“ Input Year of Load Conditions ”, etc. The data is displayed, and each of these data can be input and edited. Further, in the detailed information input field 152, data such as “model”, “specification”, “tie rod specification”, “load condition”, etc. of the steel sheet pile P2 (or steel pipe sheet pile) is displayed. It can be input and edited. And if each data of the design condition input field 151 and the detailed information input field 152 is input and edited, and the registration button 153 is selected (clicked), the input and edited steel sheet pile P2 (or steel pipe sheet pile) is registered, The data is stored in the component information table 612 of the storage device 6. On the other hand, if the delete button 154 is selected (clicked), data relating to the steel sheet pile P2 (or steel pipe sheet pile) being displayed is deleted from the component member information table 612. Further, when the reset button 155 is selected (clicked), the data input and edited in the design condition input field 151 and the detailed information input field 152 are deleted, and the data before editing is displayed again.

  Then, in the steel pipe pile information menu 140 and the steel sheet pile / steel sheet pile information menu 150, the button 146, 156 to return to the list is selected (clicked) to display the structural member list menu 130, and the anticorrosion measure result button 136 is selected (clicked) Then, the anticorrosion countermeasure list menu 160 shown in FIG. 11 is displayed. This anti-corrosion countermeasure list menu 160 displays the countermeasure history information applied in the past for the component selected in the structural member list menu 130 and is stored in the countermeasure history information table 613 of the storage device 6. Displayed information is displayed.

  In the anticorrosion measure list menu 160, the facility name selection field 161, the type selection button 162 for selecting the type of the component (steel pipe pile or steel sheet pile / pipe sheet pile), and the component selection for selecting the target component for the anticorrosion measure A field 163, a part selection field 164 for selecting a part to be protected against corrosion of the component, a corrosion prevention area input field 165 for inputting the area to be protected against corrosion protection, and a list of corrosion protection countermeasures 166 for displaying a list of the corrosion protection measures taken in the past. Then, a new registration button 167, an edit button 168, and a structural member list return button 169 for displaying the structural member list menu 130 are displayed. In the anti-corrosion measure list 166, the anti-corrosion measure use flag, the number of times of execution, the specification, the durable year, the construction area, the construction year, and the construction month are displayed.

  In the anti-corrosion measure list menu 160, the facility name is selected in the facility name selection column 161, the type of component is selected with the type selection button 162, the target component for anti-corrosion measures is selected in the component selection column 163, and the part is selected. When one part of the anticorrosion countermeasures list 166 is selected (double-clicked) or the edit button 168 is selected (clicked) with the part selected in the column 164, the anticorrosion countermeasure information menu 170 shown in FIG. Is displayed. Here, when the new registration button 167 is selected (clicked), the anticorrosion measure information menu 170 with no data input is displayed.

  In the anti-corrosion measure information menu 170, an anti-corrosion measure general information display unit 171 for displaying general information such as a facility name, a type of component, a part, and an anti-corrosion target area, and a measure method selection column 172 for selecting a specification of the anti-corrosion measure method. And the anti-corrosion countermeasure construction method detailed information input part 173 for inputting detailed information such as the durability period, construction area, construction year, construction month, construction district / construction name, construction company, construction cost, usage flag, etc. in the selected construction method Then, a registration button 174, a delete button 175, a reset button 176, and a return button 177 for displaying the anticorrosion countermeasure list menu 160 are displayed. Then, by inputting and editing each data of the anticorrosion countermeasure construction method detailed information input unit 173 and then selecting (clicking) the registration button 174, the input and edited data is registered, and the data is stored as countermeasure history information in the storage device 6. It is stored in the table 613. On the other hand, when the delete button 175 is selected (clicked), the data related to the anticorrosion countermeasure method being displayed is deleted from the countermeasure history information table 613. Further, when the reset button 176 is selected (clicked), the data input and edited in the anticorrosion measure construction method detailed information input unit 173 is erased, and the data before editing is displayed again.

  Then, in the anticorrosion countermeasure list menu 160, the structural member list button 169 is selected (clicked) to display the structural member list menu 130, and the structural member list button 137 is further selected (clicked) to display the structural list. Returning to the menu 110, when the facility management history list button 115 is selected (clicked), the facility management history list menu 180 shown in FIG. 13 is displayed. The facility management history list menu 180 displays management history information in the port facility, and information stored in the facility management information table 611 of the storage device 6 is displayed.

  The facility management history list menu 180 includes a facility name selection field 181, a type selection button 182 for selecting the type of component (steel pipe pile or steel sheet pile / steel pipe sheet pile), and anti-corrosion and repair performed in the past at the port facility. A countermeasure record list 183 for displaying a list of countermeasure records such as reinforcement, a new registration button 184, an edit button 185, and a button 186 for returning to the structure list for displaying the structure list menu 110 are displayed. . The countermeasure record list 183 displays “construction year”, “construction month”, “execution content”, “scale”, “target part”, and “money” for each countermeasure.

  In the facility management history list menu 180, a facility name is selected in the facility name selection field 181 and a type of component is selected with the type selection button 182, and one countermeasure record in the countermeasure record list 183 is selected (double When the user clicks (or clicks) the edit button 185, the facility management information menu 190 shown in FIG. 14 is displayed. Here, when the new registration button 184 is selected (clicked), an equipment management information menu 190 without data input is displayed.

  The facility management information menu 190 includes a management record general information display unit 191 for displaying general information such as a facility name and a component type, a construction year, a construction month, an implementation content, a construction scale, and a construction target part in the management record. A management record detailed information input unit 192 for inputting detailed information such as construction amount, construction drawing, calculation sheet, presence / absence of construction record, construction company, etc., a registration button 193, a delete button 194, and a reset button 195 Then, a return to list button 196 for displaying the equipment management history list menu 180 is displayed. Then, if the registration button 193 is selected (clicked) after inputting and editing each data of the management record detailed information input unit 192, the input and edited data is registered, and the data is stored in the facility management information table of the storage device 6 611 is stored. On the other hand, when the delete button 194 is selected (clicked), the data on the anticorrosion countermeasure method being displayed is deleted from the facility management information table 611. Further, when the reset button 195 is selected (clicked), the data input and edited in the management record detailed information input unit 192 is deleted, and the data before editing is displayed again.

When the above structure input processing means 51 is completed, the processing menu 100 is displayed again on the display device 2 as shown in the flowchart of FIG. 2 (S1).
When the form print menu 102 is selected (clicked) in the process menu 100, a form print process menu 200 shown in FIG. 15 is displayed. The form print processing menu 200 includes a structure name selection field 201, a print target selection field 202 for selecting a print target, a form print button 203 for executing printing, and a menu for displaying the process menu 100. A return button 204 is displayed. The print target selection column 202 includes structure information, structural member (steel pipe pile) information, anti-corrosion countermeasure (steel pipe pile) information, structural member (steel sheet pile / steel pipe sheet pile) information, and anti-corrosion countermeasure (steel). (Sheet pile / steel pipe sheet pile) information and check boxes for selecting these print targets are displayed. Then, when the check box is checked and the printing target 203 is selected, when the form print button 203 is selected (clicked), the print processing means 592 of the processing device 5 is activated and the selected information is printed by the printing device 4. .

Next, when the construction method list menu 103 is selected in the processing menu 100 (S4), the anticorrosion countermeasure construction method input processing means 52 is activated and the processing is executed (S5).
The anti-corrosion countermeasure construction method input processing means 52 displays various information screens and input screens on the display device 2, and provides information on the anti-corrosion countermeasure construction method that can be applied to the steel pipe pile P1 and the steel sheet pile P2 that are constituent members of the steel structure. The user inputs the information from the input device 3, and the input information is stored in the anticorrosion countermeasure method information table 62 of the storage device 6.

First, the anti-corrosion countermeasure method input processing means 52 displays the anti-corrosion countermeasure method list 210 shown in FIG. 16 on the display device 2. In the construction method list menu 210, a construction method list 211, a new registration button 212, an edit button 213, and a button 214 for returning to the menu for displaying the processing menu 100 are displayed.
In the construction method list 211, data on the anticorrosion countermeasure construction method is displayed in the respective columns of “construction method name”, “display name”, and “lifetime”.
When one countermeasure construction method in the construction method list 211 is selected (double-clicked) or the edit button 213 is selected (clicked) in the construction method list menu 210, a construction method information menu 220 shown in FIG. 17 is displayed. Here, when the new registration button 212 is selected (clicked), a method information menu 220 with no data input is displayed.

  The method information menu 220 includes a method name selection field 221, a display name input field 222, a specification input field 223, a useful life input field 224, an applicable type input field 225, an applicable part input field 226, A unit price input field 227, a registration button 228, a reset button 229a, and a return to list button 229b for displaying the construction method list menu 210 are displayed. In the applicable type input field 225, a check box for selecting each structural member of the steel pipe pile, the steel sheet pile, and the steel pipe sheet pile is displayed, and the method can be applied to the structural member whose check box is checked. Set that there is. In addition, in the applicable part input field 225, a check box for inputting whether or not the countermeasure method is applicable is displayed for each part of the steel pipe pile P1 or the steel sheet pile P2. Set that the method is applicable. Furthermore, in the applicable part input field 225, a check box for inputting whether or not the countermeasure construction method can be applied in either case of new installation and repair / update, or in both cases is displayed. In the unit price entry field 227, the unit price per construction area of the countermeasure construction method can be input according to the construction site (factory, onshore, or local), the base adjustment grade, the new construction or the renewal.

In the method information menu 220, the method name selection field 221 is selected, the display name input field 222, the specification input field 223, the useful life input field 224, the applicable type input field 225, the applicable part input field 226, and the unit price. If the registration button 228 is selected (clicked) after entering and editing the data in the input field 227, the entered and edited data is registered, and the data is stored in the anticorrosion measure method information table 62 of the storage device 6. It is like that. If the reset button 229a is selected (clicked), the data input and edited in each part is deleted, and the data before editing is displayed again.
Then, the return button 229b is selected (clicked) to return to the method list menu 210, and when the return button 214 to the method list menu 210 is selected (clicked), the anticorrosion measure method input processing means 52 ends, 2, the process menu 100 is displayed again on the display device 2 (S1).

Next, when the deterioration state / structure diagnosis menu 104 is selected in the processing menu 100 (S6), the corrosion rate estimation processing means 53 is activated and the processing is executed (S61). The corrosion rate estimation processing means 53 displays various information screens and input screens on the display device 2, and corrosive rate estimation formulas based on actual measurement data, corrosion rate estimation formulas based on environmental factors, and corrosion rate estimations based on user input. One of the three estimation formulas is selected, and the corrosion rate is estimated based on the inputted corrosion rate estimation formula.
Specifically, when a corrosion rate estimation formula based on actual measurement data is selected, the corrosion rate is estimated based on a preset corrosion rate estimation formula from the corrosion data actually measured in a plurality of predetermined facilities. When the corrosion rate estimation formula based on the factor is selected, the corrosion rate is estimated based on the corrosion rate estimation formula using the environmental factor information entered in the environmental factor information input field as a parameter. When the rate estimation formula is selected, the corrosion rate is estimated based on the corrosion rate estimation formula input in the input column of the corrosion rate estimation formula.

  First, the corrosion rate estimation processing means 53 displays a corrosion rate estimation menu 300 shown in FIG. 18 on the display device 2. The corrosion rate estimation menu 300 includes a structure selection field 301, a component type selection field 302, a component name selection field 303, an anticorrosion measure selection field 304, and a corrosion rate estimation formula selection for each part of the component. Columns 305a to 305e are displayed. Further, the corrosion rate estimation menu 300 includes an anti-corrosion measure result button 310 for displaying the anti-corrosion measure list menu 160, an anti-corrosion measure plan button 311 for activating the measure plan selection processing means 54, and deterioration states of components. A deterioration state graph display button 312 to be displayed, a structure diagnosis button 313 for starting the structure diagnosis processing means 55, a reset button 314, and a button 315 for returning to the menu for displaying the processing menu 100 are displayed. The

In the anti-corrosion measure selection field 304 of the corrosion rate estimation menu 300, “development only” in which deterioration status and structural diagnosis are performed considering only anti-corrosion measures taken in the past, anti-corrosion measures taken in the past, and future implementation. In consideration of the anti-corrosion measures of the plan to be performed, it is possible to select “actual result + plan” for executing the deterioration state and the structure diagnosis. When “actual result + plan” is selected, the type of anticorrosion measure plan to be described later can be selected.
Further, in the corrosion rate estimation formula selection fields 305a to 305d for each part of the component members, the corrosion rate estimation formula (upper stage) based on actual measurement data, the corrosion rate estimation formula (middle stage) based on environmental factors, and user input, respectively. Any one of the three corrosion rate estimation formulas (lower stage) can be selected. In the present embodiment, in the corrosion rate estimation formula selection field 305e for the site in the sea soil, there are two corrosion rate estimation formulas (upper) based on actual measurement data and corrosion rate estimation formulas (lower) based on user input. Of these, one of the corrosion rate estimation formulas can be selected.

Here, when the corrosion rate estimation formula (upper stage) based on the actual measurement data is selected in the corrosion rate estimation formula selection fields 305a to 305e, the actual measurement data stored in the corrosion rate estimation formula information 63 of the storage device 6 is used. Based on this estimation formula 631, the corrosion rate is calculated based on this estimation formula 631.
When the corrosion rate estimation formula (middle stage) based on environmental factors is selected in the corrosion rate estimation formula selection fields 305a to 305d, the environmental factor information input to the six input fields 306a to 306f is used as a parameter. An estimation formula 632 based on the environmental factors stored in the corrosion rate estimation formula information 63 of the storage device 6 is read, and the corrosion rate is calculated based on the estimation formula 632. These environmental factor information includes seawater hydrogen ion concentration (pH, pH), chloride ion concentration (Cl ⁻ ), ammonia ion concentration (NH ₃ ⁺ ), conductivity, dissolved oxygen amount (DO), and Enter the water temperature.
Further, when the corrosion rate estimation formula (lower stage) input by the user is selected in the corrosion rate estimation formula selection columns 305a to 305e, the corrosion rate is calculated using the corrosion rate estimation formula input in the input column 307. Is done.

When the anticorrosion measure plan button 311 is selected (clicked) in the corrosion rate estimation menu 300, the measure plan selection processing means 54 is activated, and an anticorrosion measure plan list menu 320 shown in FIG. 19 is displayed. In this anticorrosion measure plan list menu 320, the information stored in the anticorrosion measure construction method information table 62 of the storage device 6 by the above-described anticorrosion measure construction method input processing means 52 is displayed.
The anticorrosion measure plan list menu 320 includes a facility name selection field 321, a type selection button 322 for selecting the type of component (steel pile or steel sheet pile / steel sheet pile), an anticorrosion target structure selection field 323, and an anticorrosion measure. An anticorrosion measure plan selection column 324 for selecting a combination number of plans, a region selection column 325 for selecting a component part, and an anticorrosion measure list 326 for displaying a list of anticorrosion measures are displayed. Further, the anticorrosion measure plan list menu 320 includes a plan information copy button 327, a new registration button 328, an edit button 329a, and a close button for closing the anticorrosion measure plan list menu 320 and displaying the corrosion rate estimation menu 300. 137 is displayed. As combinations of the anticorrosion measure plans that can be selected in the anticorrosion measure plan selection field 324, for example, up to five combinations can be selected, and any one of the numbers 1 to 5 is selected.

In the anti-corrosion measure list 326, data on anti-corrosion measures is displayed in the respective columns of “use flag”, “construction anti-corrosion specification”, “new construction / repair”, “lifetime”, “construction year”, and “construction month”. It is displayed.
Then, in the anticorrosion countermeasure plan list menu 320, the information on the facility name selection column 321, the type selection button 322, the anticorrosion target structure selection column 323, the anticorrosion countermeasure plan selection column 324, and the part selection column 325 is selected, and then the anticorrosion. When one anticorrosion measure in the measure list 326 is selected (double click) or the edit button 329a is selected (clicked), an anticorrosion measure plan information menu 330 shown in FIG. 20 is displayed. Here, when the new registration button 328 is selected (clicked), an anticorrosion measure plan information menu 330 with no data input is displayed. Further, when the plan information copy button 327 is selected (clicked), an anticorrosion measure plan information copy processing menu 340 shown in FIG. 21 is displayed.

  The anti-corrosion measure plan information menu 330 includes an anti-corrosion measure plan general information display unit 331 for displaying general information such as a facility name, a type of component, a part, an anti-corrosion target structure name, and an anti-corrosion measure plan, and an object of the anti-corrosion measure plan. Details such as the selection field 332 for selecting whether the structure is newly installed, repaired or renewed, and the anticorrosion method and anticorrosion specification in the anticorrosion countermeasure plan, new classification, foundation adjustment grade, durability years, construction year, construction month, usage flag, etc. An anticorrosion measure plan detailed information input unit 333 for inputting information, a registration button 334, a delete button 335, a reset button 336, and a return to list button 337 for displaying the anticorrosion measure plan list menu 320 are displayed. Is done. Then, after selecting, inputting, and editing each data of the anticorrosion measure plan detailed information input unit 333 and selecting (clicking) the registration button 334, the input and edited data is registered. On the other hand, when the delete button 335 is selected (clicked), the data related to the anticorrosion measure plan being displayed is erased. Further, when the reset button 336 is selected (clicked), the data input and edited in the anticorrosion measure plan detailed information input unit 333 is deleted, and the data before editing is displayed again.

In the anti-corrosion measure plan information copy processing menu 340, the anti-corrosion measure plan general information display unit 341 for displaying general information such as the name of the facility, the type of component, the name of the structure to be protected, and the information on the anti-corrosion measure plan that has already been set are displayed. A selection field 342 for selecting a destination anticorrosion measure plan for copying to another anticorrosion measure plan, an execution button 343 for executing copy, and a return button 344 for displaying the anticorrosion measure plan list menu 320; Is displayed. Then, after selecting the copy destination anticorrosion measure plan number in the selection field 342 and selecting (clicking) the execution button 343, the copy source anticorrosion measure plan information that has already been set is stored in the copy destination anticorrosion measure plan. Duplicated.
When the above countermeasure plan selection processing means 54 is finished and the anticorrosion countermeasure plan list menu 320 is closed, the corrosion rate estimation menu 300 is displayed again.

  Next, when the degradation status graph display button 312 is selected (clicked) in the corrosion rate estimation menu 300, the plotting processing means 591 is activated, and the degradation status result graph 350 shown in FIG. 22 is displayed. In the degradation status result graph 350, the future degradation status when each part of the steel pipe pile P1 and the steel sheet pile P2 corrodes at the corrosion rate calculated by the above-described corrosion rate estimation formula is displayed. Here, as the deterioration state, a stress intensity ratio 351 for each part of the constituent member calculated by the structure diagnosis processing means 55 described later and a management limit performance 352 that is a management standard are displayed.

Next, when the structure diagnosis button 313 is selected (clicked) in the corrosion rate estimation menu 300, the structure diagnosis processing means 55 is activated and the process is executed (S62). Then, the structure diagnosis menu 360 shown in FIG. 23 is displayed.
The structure diagnosis processing means 55 includes each part of the steel pipe pile P1 and steel sheet pile P2 calculated by the corrosion rate based on the anticorrosion countermeasure method registered by the countermeasure plan selection processing unit 54 and the estimation formula selected by the corrosion rate estimation processing unit 53. The steel pipe pile stress calculation formula and the steel sheet pile stress calculation formula stored in the stress calculation formula information 65 of the storage device 6 are read based on the effective member cross-section for each and the design conditions stored in the component information table 612. Based on these stress calculation formulas, the stress (bending moment, axial force, shear force, etc.) and the stress intensity ratio generated for each part of the steel pipe pile P1 and the steel sheet pile P2 are calculated.

  The structure diagnosis menu 360 includes a structure general information display unit 361 for displaying general information such as a facility name, a type of component, a structure member name, and an anticorrosion measure, and a steel pipe pile P1 read from the component information table 612. And component information display part 362 for displaying component information (top and bottom level, steel type used, outer diameter, thickness, etc.) of steel sheet pile P2 and design conditions (sea level at low tide (L.W. L), a sea level at high tide (HWL), a load condition, etc.) and a design condition display section 363 for displaying. Further, in the structure diagnosis menu 360, the structure diagnosis graph creation button 364, the stress diagram creation button 365, the reset button 366, and the structure diagnosis processing means 55 are terminated to display the corrosion rate estimation menu 300. A return button 367 is displayed. The design condition display section 363 of the structure diagnosis menu 360 displays a management limit performance input field 363a, and the management limit performance (management standard) is input to the management limit performance input field 363a. That is, the management reference input processing unit 56 is configured as a part of the function of the structure diagnosis processing unit 55, thereby executing the management reference input process (S63).

When the structure diagnosis graph creation button 364 is selected (clicked) on the structure diagnosis menu 360, the drawing processing means 591 is activated and the structure diagnosis graph 370 as shown in FIG. 24 is displayed on the display device 2 (S64). ). In this structural diagnosis graph 370, the management limit performance 372 is displayed over the secular change of the stress ratio 371 for each part of the constituent member, and the margin of the constituent member (load bearing property). Can be confirmed.
When the stress diagram creation button 365 is selected (clicked) in the structure diagnosis menu 360, the plotting processing means 591 is activated and a stress diagram (moment diagram) 375 as shown in FIG. (S64). In this stress diagram 375, the limit performance 377 for management is displayed so as to overlap the stress ratio 376, and the margin (load resistance) of the constituent members can be confirmed.
When the structure diagnosis processing means 55 and the drawing processing means 591 are finished, the display returns to the corrosion rate estimation menu 300 and the return to menu button 315 is selected (clicked), the process menu 100 is again displayed as shown in the flowchart of FIG. It is displayed on the display device 2 (S1).

Next, when the LCC evaluation (structural member) menu 105 or the LCC evaluation (structure) menu 106 is selected in the processing menu 100 (S7), the life cycle cost calculation means 57 is activated and the processing is executed (S71). ).
When the LCC evaluation (structural member) menu 105 is selected, the LCC evaluation is performed in units of structural members (steel pipe piles P1 and steel sheet piles P2) of the steel structure, and the LCC evaluation (structural member) selection shown in FIG. 26 is selected. A menu 380 is displayed.

  The LCC evaluation (structural member) selection menu 380 includes a structure selection field 381 for selecting a structure, an input field for inputting an evaluation year, and an anticorrosion countermeasure plan and an anticorrosion countermeasure plan registered by the countermeasure plan selection processing means 54. Measure plan selection field 382 for selecting the type of component, a component member selection button 383 for selecting the type of component, a component member table 384 for displaying a list of component members, and evaluation conditions (measurement year and An evaluation condition display section 385 for displaying a construction area or the like) is displayed. Furthermore, in the LCC evaluation (structural member) selection menu 380, an anti-corrosion measure plan confirmation button 386 for displaying the anti-corrosion measure plan list menu 320, an LCC evaluation graph display button 387 for displaying an LCC evaluation graph, a reset button 389a, A menu return button 389b for displaying the processing menu 100 is displayed.

  In the LCC evaluation (structural member) selection menu 380, a structure is selected in the structure selection column 381, a countermeasure plan is selected in the countermeasure plan selection column 382, and the target component member is selected in the component member list 384. When the LCC evaluation graph display button 387 is selected (clicked), the drawing processing means 591 is activated (S72), and the LCC evaluation result (structural member 1 countermeasure plan) 390 shown in FIG. 27 is displayed. In this LCC evaluation result (structural member 1 countermeasure plan) 390, a graph with the horizontal axis representing the future year and the vertical axis representing the countermeasure cost is displayed, and the future for each part of the selected steel pipe pile P1 is displayed. The cost that occurs across and the total cost of each part are displayed.

Next, when the LCC evaluation (structure) menu 106 is selected in the processing menu 100, the LCC evaluation is performed on the entire steel structure, and the LCC evaluation (structure) selection menu 400 shown in FIG. 28 is displayed. Is done.
The LCC evaluation (structure) selection menu 400 includes a structure selection field 401 for selecting a structure, an input field for inputting an evaluation year, a pattern selection field 402 for selecting an output pattern of a countermeasure plan, and a structure Displays the pattern setting table 403 for setting the output pattern of the countermeasure plan for each component in the, the selection table 404 for setting the combination for each pattern of the countermeasure plan, and the evaluation conditions (construction year, construction area, etc.) of the countermeasure plan The evaluation condition display unit 405 to be displayed is displayed. Further, in the LCC evaluation (structure) selection menu 400, an inspection cost input field 406 for inputting an inspection cost, an anti-corrosion measure plan confirmation button 407 for displaying an anti-corrosion measure plan list menu 320, and an LCC for displaying an LCC evaluation graph. An evaluation graph display button 408, a reset button 409a, and a menu return button 409b for displaying the processing menu 100 are displayed.

  Here, as a pattern of the countermeasure plan, up to 25 kinds of anticorrosion countermeasure plans set in the anticorrosion countermeasure plan selection field 324 in the anticorrosion countermeasure plan list menu 320 can be arbitrarily selected for each part up to 25 types. Of these, 5 patterns are possible. Thus, by setting a plurality of patterns of anticorrosion countermeasure plans, the plurality of patterns of anticorrosion countermeasure plans can be compared and examined in an LCC evaluation graph 410 described later.

In the LCC evaluation (structure) selection menu 400, when a structure is selected in the structure selection field 401 and an output pattern is selected in the pattern selection field 402, the LCC evaluation graph display button 408 is selected (clicked). The processing means 591 is activated (S72), and the LCC evaluation result (structure) 410 shown in FIG. 29 is displayed. In this LCC evaluation result (structure) 410, a graph is shown in which the horizontal axis represents the year in the future and the cost of countermeasures is plotted on the vertical axis, for each pattern of the anticorrosion countermeasure plan in the selected structure (in FIG. 29). Is displayed in the future (5 patterns).
When the above life cycle cost calculation means 57 and drawing processing means 591 are completed, the processing menu 100 is displayed again on the display device 2 as shown in the flowchart of FIG. 2 (S1).

Next, when the coating film soundness evaluation menu 107 is selected in the processing menu 100 (S8), the coating film soundness evaluation means 58 is activated and the process is executed (S81). And the coating-film soundness evaluation calculation sheet | seat 420 shown in FIG. 30 is displayed.
The coating film soundness evaluation means 58 evaluates the soundness of the coating film by executing an analysis in consideration of the deterioration of the coating film applied to the surfaces of the steel pipe pile P1 and the steel sheet pile P2.
In the coating film soundness evaluation calculation sheet 420, the rust generation area rate input field 421 for inputting the rust generation area rate of the coating film surface, and the number of years that have elapsed since the coating was applied. An input field 422, a service life output field 423 for outputting the service life of the coating film, a remaining life output field 424 for outputting the remaining life of the paint film, and an analysis execution button 425 for executing the analysis. Is displayed. When the analysis execution button 425 is selected (clicked) in the state where the rust occurrence area rate is input in the rust generation area rate input field 421 and the elapsed year is input in the elapsed year input field 422, the service life is displayed in the useful life output field 423. The number of years is output, and the remaining life of the coating film is output in the remaining life output column 424.
When the above coating film soundness evaluation means 58 ends, the processing menu 100 is displayed again on the display device 2 as shown in the flowchart of FIG. 2 (S1). Then, by selecting (clicking) the end button 108 of the processing menu 100 (S9), the LCC evaluation system is ended.

According to this embodiment, there are the following effects.
(1) That is, the corrosion rate of the steel pipe pile P1 and the steel sheet pile P2 in the steel structure is estimated by the corrosion rate estimation processing means 53, and the stress in a state where the effective member cross section of the steel pipe pile P1 and the steel sheet pile P2 is reduced by this corrosion. By calculating the degree ratio by the structure diagnosis processing means 55, the load bearing properties of the steel pipe pile P1 and the steel sheet pile P2 can be appropriately evaluated, and an accurate repair plan can be formulated. Therefore, the life cycle cost of the steel structure in the harbor (marine) facility can be calculated with high accuracy, and the labor and cost related to the maintenance of the harbor (marine) facility can be greatly reduced.

(2) Since the facility management information table 611 including construction records and the structural member information table 612 including the design conditions of the steel pipe piles P1 and the steel sheet piles P2 are provided, The management history up to can be managed in a lump, and the accuracy in formulating a repair plan for the future can be improved. Therefore, the facility management information and the like are stored in the storage device 6 as electronic data in comparison with the conventional method in which construction records and design materials are stored in the form of paper. This makes it easier to reduce the time and effort required to develop a repair plan.

(3) Furthermore, by storing the record of measures taken in the past as the measure history information table 613, it is possible to further improve the accuracy when diagnosing the steel pipe pile P1 and the steel sheet pile P2, and more accurately. Can develop a simple repair plan.

(4) Further, in the corrosion rate estimation processing means 53, among the three estimation formulas, a corrosion rate estimation formula based on actual measurement data, a corrosion rate estimation formula based on environmental factors, and a corrosion rate estimation formula based on user input. By selecting one of these, the user of the system can arbitrarily select the corrosion rate estimation formula according to the location conditions of the facility and the surrounding environment conditions, etc., and improve the estimation accuracy of the corrosion rate Can do.

(5) Furthermore, in the life cycle cost calculation means 57, by comparing a plurality of patterns of the anticorrosion countermeasure plan arbitrarily selecting the construction time and the anticorrosion countermeasure construction method, the life cycle cost calculating means 57 is flexible according to the facility use plan for the future. A repair plan can be formulated, and the life cycle cost can be efficiently reduced.

(6) Also, by providing the coating film soundness evaluation means 58, the soundness of the coating film (the remaining life of the coating film) applied to the surface of the component member is calculated based on the rust generation area ratio and the elapsed years. The non-corrosion period of the steel pipe pile P1 and the steel sheet pile P2 can be estimated, and the progress of corrosion in the steel structure can be grasped more accurately.

(7) Furthermore, the stress calculation formula information 65 corresponding to the types of steel pipe piles P1 and steel sheet piles P2 is stored in the storage device 6, so that the stress analysis of the steel pipe piles P1 and steel sheet piles P2 can be performed quickly and accurately. It is possible to improve the diagnostic accuracy and speed for each component.

(8) Further, by evaluating the steel pipe pile P1 and the steel sheet pile P2 separately for each part of the sea soil middle part, the sea part, the tidal part, the splash part, and the atmospheric part, the corrosion rates and members that are different for each part. Diagnosis and countermeasure plan selection that appropriately evaluates the cross section and the like can be executed, and the life cycle cost calculation accuracy can be further improved.

(9) Moreover, in the anticorrosion countermeasure construction method information table 62, each data of the construction method specification, useful life, applicable structural member, applicable structural member portion, and unit price is input for each anticorrosion countermeasure construction method. As a result, the selection of the anticorrosion countermeasure construction method becomes easy, and the life cycle cost can be calculated quickly.

In addition, this invention is not limited to the said embodiment, Including other structures etc. which can achieve the objective of this invention, the deformation | transformation etc. which are shown below are also contained in this invention.
For example, in the above-described embodiment, various menu screens are displayed on the display device 2, and various processes are executed in a conversation format in which data is input into the input fields on these screens or data is selected from the selection fields. However, the present invention is not limited to such a format, and the processing means 53 to 58 may be executed in a batch process.

Moreover, although the LCC evaluation system of the said embodiment was the structure which displays the repair cost which generate | occur | produces in the future by the life cycle cost calculation means 57, and a user examines this output, it is not restricted to this. For example, the service life of a facility is entered, and based on the service life and the facility management standard, an anticorrosion countermeasure plan that automatically does not exceed the facility management standard during the service life is automatically created. Also good. That is, after the management standard input process (S63) in the flowchart of FIG. 2, a step of comparing the stress intensity ratio and the facility management standard is provided, and the construction interval of the anticorrosion countermeasure construction method is reset according to the comparison result, By adopting a configuration in which the structure diagnosis process (S62) is executed again, an optimal anticorrosion countermeasure plan can be formulated.
Furthermore, when the stress intensity ratio exceeds the facility management standard during the service life, the design condition (load condition) is changed, that is, the use condition of the facility is reviewed, and the LCC evaluation is performed again. Such a function may be added.
Moreover, although the said embodiment demonstrated the life cycle cost evaluation system of the steel structure in a harbor facility, as facilities, marine facilities, such as an open ocean oil drilling jacket, may be sufficient. In that case, a system for executing stress analysis, fatigue analysis, etc. of the truss structure in order to appropriately evaluate the load bearing properties of the steel structure jacket or the like is incorporated in the LCC evaluation system of the present invention. Alternatively, it may be provided separately so as to be able to be linked with the LCC evaluation system.

In addition, the best configuration, method and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this. That is, the invention has been illustrated and described with particular reference to certain specific embodiments, but without departing from the spirit and scope of the invention, Various modifications can be made by those skilled in the art in terms of material, quantity, and other detailed configurations.
Therefore, the description limiting the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such restrictions is included in this invention.

It is a block diagram which shows the structure of the life cycle cost (LCC) evaluation system of the steel structure which concerns on embodiment of this invention. It is a flowchart which shows operation | movement of the said LCC evaluation system. It is sectional drawing which shows the steel pipe pile as a structural member of the steel structure which is the evaluation object of the said LCC evaluation system. It is sectional drawing which shows the steel sheet pile as a structural member of the steel structure which is the evaluation object of the said LCC evaluation system. It is a figure which shows the process menu displayed on a display means in the said LCC evaluation system. It is a figure which shows the structure list menu displayed on a display means in the said LCC evaluation system. It is a figure which shows the structure information menu displayed on a display means in the said LCC evaluation system. It is a figure which shows the structural member list menu displayed on a display means in the said LCC evaluation system. It is a figure which shows the steel pipe pile information menu displayed on a display means in the said LCC evaluation system. It is a figure which shows the steel sheet pile and steel pipe sheet pile information menu displayed on a display means in the said LCC evaluation system. It is a figure which shows the anticorrosion countermeasure list menu displayed on a display means in the said LCC evaluation system. It is a figure which shows the anti-corrosion countermeasure information menu displayed on a display means in the said LCC evaluation system. It is a figure which shows the equipment management log | history list menu displayed on a display means in the said LCC evaluation system. It is a figure which shows the equipment management information menu displayed on a display means in the said LCC evaluation system. It is a figure which shows the form printing process menu displayed on a display means in the said LCC evaluation system. It is a figure which shows the method list menu of the anti-corrosion measures method displayed on a display means in the said LCC evaluation system. It is a figure which shows the construction method menu displayed on a display means in the said LCC evaluation system. It is a figure which shows the corrosion rate estimation menu displayed on a display means in the said LCC evaluation system. It is a figure which shows the anti-corrosion countermeasure plan list menu displayed on a display means in the said LCC evaluation system. It is a figure which shows the anti-corrosion countermeasure plan information menu displayed on a display means in the said LCC evaluation system. It is a figure which shows the anti-corrosion countermeasure plan information copy process menu displayed on a display means in the said LCC evaluation system. It is a figure which shows the degradation condition result graph displayed on a display means in the said LCC evaluation system. It is a figure which shows the structure diagnostic menu displayed on a display means in the said LCC evaluation system. It is a figure which shows the structure diagnostic result displayed on a display means in the said LCC evaluation system. It is a figure which shows the stress figure displayed on a display means in the said LCC evaluation system. It is a figure which shows the LCC evaluation selection menu displayed on a display means in the said LCC evaluation system. It is a figure which shows the LCC evaluation result displayed on a display means in the said LCC evaluation system. It is a figure which shows the LCC evaluation selection menu displayed on a display means in the said LCC evaluation system. It is a figure which shows the LCC evaluation result displayed on a display means in the said LCC evaluation system. It is a figure which shows the coating-film soundness evaluation calculation sheet | seat displayed on a display means in the said LCC evaluation system.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 2 ... Display apparatus (display means), 3 ... Input apparatus (input means), 5 ... Processing apparatus (processing means), 6 ... Memory | storage device (storage means), 53 ... Corrosion rate estimation processing means, 54 ... Countermeasure plan selection process Means 55 ... Structure diagnosis processing means 56 ... Management standard input processing means 57 ... Life cycle cost calculation means 58 ... Coating film soundness evaluation means 62 ... Anticorrosion countermeasure construction method information table 63 ... Corrosion rate estimation formula information , 65 ... Stress calculation formula information, 611 ... Facility management information table, 612 ... Component member information table, 613 ... Countermeasure history information table, P1 ... Steel pipe pile (component), P2 ... Steel sheet pile (component).

Claims (8)

A life cycle cost evaluation system for steel structures in harbors and offshore facilities,
An input means for inputting information, a storage means for storing various information, a display means for displaying information, and a processing means for processing information,
The storage means includes facility management information including construction records and design conditions of the facility, component member information including a member list of components such as steel pipe piles and steel sheet piles constituting the steel structure, And anticorrosion countermeasure construction method information including the anticorrosion countermeasure construction method to be applied to the component,
The processing means includes a corrosion rate estimation processing means for estimating a corrosion rate of the constituent member, a management reference input processing means for inputting a management reference of the facility from the input means, and an anticorrosion countermeasure construction method in the anticorrosion countermeasure construction method information. Of measure plan selection processing means for displaying on the display means and selecting from the input means, diagnosis processing means for diagnosing the constituent members, the input management criteria, the selected anticorrosion countermeasure construction method, and diagnosis processing means A life cycle cost calculating means for calculating the life cycle cost of the steel structure based on the diagnosis result,
The corrosion rate estimation processing means selects at least two types of corrosion rate estimation formulas for each part of the constituent member, and estimates the corrosion rate for each part of the constituent member based on the selected corrosion rate estimation formula. ,
The countermeasure plan selection processing means allows an arbitrary anti-corrosion countermeasure construction method to be selected from the anti-corrosion countermeasure construction method information for each part of the component member,
The diagnostic processing means includes an effective member cross-section for each part of the component calculated by the selected anticorrosion countermeasure method and the estimated corrosion rate, an action load of a design condition included in the facility management information, And calculating the stress ratio generated for each part of the constituent member based on the above, and displaying the input facility management standard and the calculated stress ratio on the display means for comparison,
The life cycle cost evaluation system for a steel structure characterized in that the life cycle cost calculation means displays the cost associated with the anticorrosion countermeasure construction method selected by the countermeasure plan selection processing means on the display means. In the life cycle cost evaluation system of the steel structure according to claim 1,
A life history cost evaluation system for a steel structure, characterized in that the storage means stores countermeasure history information including a record of countermeasures such as anticorrosion, repair, reinforcement, etc. applied in the past in the steel structure. In the life cycle cost evaluation system of the steel structure according to claim 1 or claim 2,
The countermeasure plan selection processing means allows one or more construction periods in a predetermined period in the future from the planning time and an arbitrary anticorrosion countermeasure construction method to be implemented at each construction period to be selected. Cost evaluation system. In the life cycle cost evaluation system for a steel structure according to any one of claims 1 to 3,
The corrosion rate estimation processing means selects one of three estimation formulas: a corrosion rate estimation formula based on actual measurement data, a corrosion rate estimation formula based on environmental factors, and a corrosion rate estimation formula based on user input. Let
When the corrosion rate estimation formula based on the actual measurement data is selected, the corrosion rate is estimated based on the preset corrosion rate estimation formula from the corrosion data measured in a predetermined plurality of facilities,
When a corrosion rate estimation formula based on an environmental factor is selected, an input field of environmental factor information is displayed on the display means, and the corrosion rate is calculated based on the corrosion rate estimation formula using the input environmental factor information as a parameter. Estimate
When a corrosion rate estimation formula based on user input is selected, an input field for the corrosion rate estimation formula is displayed on the display means, and the corrosion rate is estimated based on the input corrosion rate estimation formula. Life cycle cost evaluation system for steel structures. In the life cycle cost evaluation system for a steel structure according to any one of claims 1 to 4,
The processing means includes a coating film soundness evaluation means for evaluating the soundness of the coating film in consideration of deterioration of the coating film applied to the surface of the component member,
The coating film soundness evaluation means displays on the display means the rust generation area ratio of the coating film surface and the elapsed years of the coating film on the display means, and the coating film based on the input rust generation area ratio and elapsed years A life cycle cost evaluation system for steel structures characterized by calculating the remaining life of steel. In the life cycle cost evaluation system for a steel structure according to any one of claims 1 to 5,
In the storage means, stress calculation formula information including a stress calculation formula corresponding to the type of constituent members such as the steel pipe pile and steel sheet pile is stored,
The diagnostic processing means selects a stress calculation formula from the stress calculation formula information according to the type of the constituent member, and executes stress analysis for each constituent member based on the selected stress calculation formula to calculate a stress ratio. A life cycle cost evaluation system for steel structures. In the life cycle cost evaluation system for a steel structure according to any one of claims 1 to 6,
The parts for evaluating the constituent members are the mid-sea part located in the sea soil below the sea floor, the mid-sea part located above the mid-sea part and below the sea level at low tide, A tidal part located above the sea level and below the sea level at high tide, a splash part exposed above the tidal part and exposed to sea water splashes, A life cycle cost evaluation system for a steel structure, characterized by comprising an exposed atmospheric part. In the life cycle cost evaluation system for a steel structure according to any one of claims 1 to 7,
In the anti-corrosion countermeasure construction method information, for each anti-corrosion countermeasure construction method, construction method specification, useful life, applicable structural member, applicable structural member part, and unit price data are input. Life cycle cost evaluation system for steel structures.

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