JPH06301684A - Schedule calculating method for process network - Google Patents

Abstract

PURPOSE:To calculate a schedule which is close to an actual construction and suitable to a substance by discriminating whether the work start date or work end date of a process network is a holiday or not, and deciding the schedule by discriminating the holiday and an operation rate by a calendar. CONSTITUTION:Network data indicating the sequence relation of plural works necessary for constructing structures, the required number of working dates, and the operation rate are inputted, and estimation for the preparation of the network is operated. Then, when a schedule arithmetic program is started, a CPU 10 discriminates whether the work start date is the holiday or not by referring to the calendar days of a calender device 12, substitutes the work start date in the date on the calendar day, resets a counter for counting the number of working dates incorporated in the CPU 10, and operates the increment of the dates on the calendar days from the work start date. Then, the CPU discriminates whether or not it is the holiday at each time of operating the increment, counts-up the number of working dates at each time of discriminating that it is not the holiday, allocates the date as the work end date when the number of working dates reaches the required number of dates, and stores it in a storage device 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of calculating a schedule of a process network used for a process plan of a construction work, and more particularly, a process of calculating a schedule in a process network while evaluating whether it is a holiday or a work day. It is related to a network schedule calculation method.

[0002]

2. Description of the Related Art A construction process plan is for the purpose of executing a construction with high precision and quality within a designated construction period according to a construction budget and completing the construction. Network techniques are used for the creation. Conventionally, in such a process network, for example, when calculating a schedule for reinforced concrete construction of a structure, as shown in FIG. 5, a process consisting of a reinforcing bar assembly, a formwork, concrete placing, concrete curing, and formwork removal. With the work start time of the network set to zero, the time required to reach the work end point was calculated by successively adding the required days for each work, and the construction period of the reinforced concrete construction network was calculated from this. In this case, as is clear from FIG. 5, the fifth day is the work start date, the sixteenth day is the work end date, and the twelfth day is a holiday. In addition, holidays and operating rates are specified by calendar processing by the method of work suspension days, and are set without distinction. Further, in the schedule allocation method involving a holiday, first, a process network calculation is performed for the schedule excluding the holiday, and then the holiday is allocated.

[0003]

However, in the above-mentioned conventional schedule calculation method for the process network, the holiday and the operation rate are set without being clearly distinguished by the calendar, so that the difference in the process plan is also caused. It cannot be expressed clearly. That is, in the construction process network,
There are many sequence relationships with a time lag between works, such as the curing period associated with concrete pouring, which is peculiar to construction work, but during what work (for example, whether or not there are holidays between work) Since no consideration is given to what to do, if the curing period such as the concrete curing period mentioned above overlaps with the holiday, do not consider the holiday as the curing period,
The schedule was calculated to add holidays and curing periods separately. For this reason, there is a large difference between the process plan and the actual construction, and there is a problem that an accurate schedule cannot be calculated.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to calculate a schedule of a process network capable of performing a schedule calculation that is more closely matched to actual construction and is substantially suitable for actual construction. To provide a method.

[0005]

In order to achieve the above object, the present invention obtains a schedule from the start to the end of work of a process network which represents the order relation of a plurality of works required for constructing a structure. A method of calculating a schedule of a process network, comprising a step of determining whether a work start date or a work end date of the process network is a holiday from a calendar day, a construction resource used in each work, and the structure. A step of calculating the required number of days required to perform each work based on the actual work days and the operating rate set according to the time, and a calendar day from the work start date or work end date determined not to be the holiday It is determined for each day whether the work allocation date of the required number of days is a holiday, and the number of work days is incremented each time it is determined not to be a holiday. The work day until reaching the number of days required issued is made and a step of assigning sequentially on calendar days. Further, the present invention is characterized in that a time lag generated during work such as a concrete curing period is allocated as a holiday.

[0006]

An embodiment of the method of the present invention will be described below with reference to the drawings. FIG. 1 is a system configuration diagram of a process network schedule calculation method according to the present invention. In FIG. 1, 10
Is a central processing unit that manages and controls the entire system (hereinafter,
The CPU 10 is connected to a storage device 11 for storing a schedule calculation program and the like, a calendar device 12 for storing seven days of the year and holidays, and various interfaces 13, 14, 15 respectively. .

An input device 16 such as a keyboard is connected to the input interface 13, a display device 18 formed of a CRT is connected to the display interface 14 via a display control circuit 17, and an output device is also provided. A printer 20 is connected to the interface 15 of FIG. Further, the CPU 10 has
An output interface 21 is connected, and an XY plotter 23 is connected to the interface 21 via a plotter control circuit 22.

Next, the schedule calculation of the process network according to this embodiment will be described with reference to the flowchart shown in FIG. When creating the process network, the blueprint of the construction, the site conditions of the construction site, the construction plan, the work volume of each work,
After preparing preparation data concerning work efficiency of each worker and construction machine, materials, and labor procurement and inputting these preparation data from the input device 16, a plurality of works necessary for constructing a structure and the order thereof. Estimate the creation of the network by inputting from the input device 16 the network data representing the relationship and the actual work days required for the work set according to these construction resource data and the operating rate set for each period in monthly or weekly units. I do. After that, the schedule calculation of this embodiment is executed.

When the schedule calculation program starts, C
In step S1, the PU 10 determines whether the work start date of the process network is a holiday with reference to the calendar date of the calendar device 12. If it is determined that it is a holiday, the process proceeds to step S2, and the work start date (ES) = ES + 1
Processing is performed and the process returns to step S3 to determine again whether it is a holiday. When it is determined that the work start date is not a holiday, the process proceeds to step S3. In step S3, the work start date (ES) is substituted for the calendar date (D), and the CPU
The count value (N) of the built-in work day counting counter is reset to 0. In this embodiment, as shown in FIG. 3, 5 days on a calendar day is a holiday, so the next 6 days are referred to. In this case, since 6 days are weekdays, 6 days are assigned to the work start date.

In the next step S4, the required number of days (DUL) required for all work processes is calculated based on the actual number of work days required for the work and the operating rate. The operating rate at this time is taken into consideration when calculating the required number of days from the earliest start date (the earliest day when work can be started) or the latest start date (day when work may be started latest) There is a need. Since the actual working days in this embodiment are 6 days and the operating rate is 75%, the number of days required for all working steps is 8 days as shown in FIG.

In the next step S5, the calendar date (D) is incremented from the work start date, and it is determined for each increment whether the date D + 1 is a holiday. If it is determined that it is a holiday, the process of step S5 is repeatedly executed. When it is determined that it is not a holiday, the process proceeds to step S6, and the number of working days (N) is counted up every time it is determined that the date (D) is not a holiday, and the number of working days (N) calculated is the required number of days ( DUL) is reached. When the number of working days (N) has not reached the required number of days (DUL), the process returns to step S5, and the processes of steps S5 and S6 are repeatedly executed until the number of working days (N) reaches the required number of days (DUL). When it is determined that the number of work days (N) has reached the required number of days (DUL), the process proceeds to step S7, and the date (D) is assigned as the work end date and recorded in the storage device 11. In this embodiment, as shown in FIG. 3, the 16th calendar day is the work end date.

The schedule data calculated in this way is
The display device 1 from the CPU 10 through the display control circuit 17 together with the precedence network process network table data.
8 is output and displayed. Further, the schedule data can be printed out by the printer 20 as needed. Further, by outputting the process network data to the XY plotter 23 through the plotter control circuit 22, a network process diagram can be drawn.

In this embodiment as described above, as is apparent from the flow chart of FIG. 2, when it is determined that the work start date of the designated process network is not a holiday on a calendar day, the work is started on that day. Allocate as days, and calculate the required number of days based on the actual number of working days and the operating rate set according to the construction resource and time, and when allocating the schedule based on this number of days Only the number of work days is counted while determining the number of days, and the date (D) when the number of work days becomes the required number is assigned as the work end date. Therefore, it becomes possible to calculate a schedule close to the actual construction and the operating rate. By clearly distinguishing between holidays and holidays, it becomes possible to perform schedule simulations with varying operating rates during process planning. Also, when expressed using a time lag such as the concrete curing period that is unique to construction work, it becomes possible to allocate a time lag to holidays,
It is possible to create a substantial process network that is closer to actual construction.

In the above embodiment, the case where the schedule calculation is obtained by the forward calculation has been described, but the present invention is not limited to this, and conversely, the calculation is performed backward from the work end date to the start date. It is also applied to schedule allocation in backward calculation. The schedule allocation state in this case is shown in FIG.

[0015]

As described above, according to the present invention, the schedule calculation of the process network for obtaining the schedule from the start to the end of the work of the process network that represents the order relation of a plurality of works necessary for constructing the structure A method for determining whether a work start date or a work end date of the process network is a holiday from a calendar day, a construction resource used in each work, and a time to construct the structure Referring to a calendar day from a work start date or a work end date determined not to be the above-mentioned holiday, based on the calculated number of actual work days and the operating rate For each day, it is determined whether the work allocation date of the required number of days is a holiday, and the number of working days is incremented each time it is determined that it is not a holiday, and the number of working days is the calculated required number of days. Since it has a process that allocates work days in order on the calendar day until it reaches, it is possible to calculate the schedule close to the actual construction, and by clearly distinguishing the operating rate and holidays, it is possible to operate at the time of process planning. It becomes possible to perform a schedule simulation with varying rates. Further, in the present invention, it becomes possible to allocate a time lag that occurs during work such as a concrete curing period to a holiday,
It is possible to create a substantial process network that is closer to actual construction.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of a process network schedule calculation method according to the present invention.

FIG. 2 is a flowchart showing a processing procedure of a schedule calculation in the present embodiment.

FIG. 3 is an explanatory diagram of a case where a schedule calculation in the present embodiment is obtained by forward calculation.

FIG. 4 is an explanatory diagram of a case where a schedule calculation is obtained by a backward calculation in the present embodiment.

FIG. 5 is an explanatory diagram when a conventional schedule calculation is obtained by forward calculation.

[Explanation of symbols]

 10 CPU 11 Storage Device 12 Calendar Device 16 Input Device 18 Display Device 20 Printer

Claims (2)

[Claims] 1. A process network schedule calculation method for obtaining a schedule from a work start to a finish of a process network that represents a sequence relationship of a plurality of works required for constructing a structure, the calendar method comprising: Based on the process of determining whether the work start date or the work end date of the process network is a holiday, the work resources used in each work, and the actual work days and the operating rate set according to the time of constructing the structure A step of calculating the required number of days required to perform each of the work, and a work allocation date of the required number of days every day while referring to a calendar day from the work start date or work end date determined not to be the holiday It is determined whether it is a holiday, and the number of working days is incremented each time it is determined that it is not a holiday, and the working days are ordered in calendar days until the number of working days reaches the calculated required number of days. A process network schedule calculation method that comprises processes to be assigned to the numbers. 2. The process network schedule calculation method according to claim 1, wherein a time lag that occurs between works such as a concrete curing period is allocated as a holiday.