KR101755901B1 - Method for performing BIM-integrated productivity simulation for generating construction plan - Google Patents
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Abstract
The present invention provides a technique for simulating productivity based on information obtained from a building information model in cooperation with a BIM, and thereby manually or automatically calculating a construction production plan and thereby achieving ordering of materials.
Description
The present invention relates to a technique capable of simulating productivity based on information obtained from a building information model in cooperation with a BIM, and thereby manually or automatically calculating a construction production plan and thereby achieving ordering of materials.
Recently, construction projects are becoming larger and more complicated, and accordingly, the amount of information required in the construction process must be large and various factors must be considered at the same time.
With this trend, it is becoming more and more important to predict efficient and reliable productivity in order to reduce uncertainty in construction projects, increase work efficiency, and reduce costs, time, and materials.
The widely used productivity estimates and the resulting method of calculating the production plan are dependent on the records. That is, first, a rough plan is established by using historical data accumulated in past actual construction examples, and it is corrected in view of the experience of the workers themselves.
The productivity prediction method according to the related art involves various problems, for example, various resource waste due to productivity that changes dynamically in real time.
FIG. 1 is a diagram for explaining this. The empirical productivity index is divided into optimistic, pessimistic, and mid (mid), and they can be set empirically according to the X-axis time, Actual productivity does not comply with this, and inevitably inevitably leads to dynamic changes in view of the recent trend toward greater complexity, resulting in differences in productivity and empirical experience.
In the case of predicting the productivity according to the prior art and establishing the construction production plan accordingly, if the actual productivity is higher than the empirically predicted productivity, the resource will be wasted and if the productivity is lower, the resource maintenance cost will increase. ).
If the accuracy of construction planning is low due to the inability to predict the productivity changing in real time, various resources including time will be wasted, leading to construction delay, unnecessary materials, or labor consumption. The need for forecasting is very high.
The BIM (Building Information Model) is a building information model that generates and expresses electronic information of a building by using a three-dimensional design technique, and can acquire and manage the information necessary for the entire life cycle of the building by utilizing it. The BIM authoring tool for creating BIM (referred to below as "building information input") is typically Revit.
Conventional discussions have been made to predict and improve fish images using BIM.
The inventors of the present invention have recognized that a simulation based on BIM is effective when applied to construction and production planning in the article entitled "Study on Establishment of Construction Production Planning Using Simulation Based on BIM" published in November 2014. In other words, it is suggested that the BIM-based simulation can be used to simulate the construction site to achieve smooth material procurement. The present invention is based on such a paper of the present inventor.
On the other hand, in the paper entitled " Application of BIM for Improvement of Construction Productivity ", Kim Yongbee et al., It is described that productivity can be improved by using BIM. However, this paper suggests that design change can be directly applied to construction, and design errors can be confirmed relatively early, and that it is easy for construction stakeholders to communicate when using BIM. Is not a paper on productivity, but merely a reduction in the complexity and convenience that can be gained in replacing off-line work online.
Lee, Seung-il et al., "BIM-based lean design and cost analysis system development", describes a technology that implements "lean construction" based on BIM, which avoids unnecessary time, cost and equipment in order to increase productivity and reduce costs. present. Specifically, a unit price database is used to analyze the construction cost, and a method of identifying or recommending alternative materials that can lower the construction cost is adopted. It is true that reducing costs through lean design leads to improvement in productivity. However, the method is merely adopting a less expensive material, and is different from the present invention for achieving high productivity even if the same resources, time, .
(Non-Patent Document 1) Son Jeong-wook et al., 2014.11. "A Study on the Establishment of Construction Production Plan Using BIM-based Simulation", Construction Management Association
(Non-Patent Document 2) Kang, Seok Gil et al., 2011.04., "A Study on the Productivity Analysis of Steel Frame Construction Considering Working Tile," Journal of the Architectural Institute of Korea Spring Conference
(Non-Patent Document 3) Kim, YB, et al., 2011.11, "Utilization of BIM for Improvement of Construction Productivity", Korea Institute of Construction Management
(Non-Patent Document 4) Lee, Seung Il et al., "BIM based lean design and cost analysis system development", Korea Institute of Construction Management
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems.
Based on the construction information file which can be confirmed by BIM and some additional information, the construction productivity of the building is simulated and predicted with high accuracy, and the construction production plan is manually or automatically calculated based on the simulation.
We also propose a method of procurement based on the calculated construction plan.
According to an embodiment of the present invention, there is provided a method of generating a building information model, the method comprising: (a) generating a building information model through the building information input unit; (b) determining necessary information necessary for the productivity simulation according to a predetermined method through the necessary
In addition, the necessary information in the step (b) preferably includes steel for a column and beam for beams in a steel structure building.
Further, the additional information in the step (d) preferably includes a capacity of a stockyard in a steel structure building.
The additional information in the step (d) may further include a number of erection works in the steel structure building.
Further, the additional information in the step (d) may further include a workable work, a type of section steel, a work height, whether or not a tower crane is used, and the number of workers in the steel structure building.
After the step (d), (f) inputting a construction production plan according to time through a construction production planning input module; (g) If the productivity change over time in the step (e) overlaps with the construction production schedule according to the time in the step (f) and the construction production schedule according to the time is larger than the change in the productivity according to time, And outputting the output signal.
According to the present invention, the construction productivity of a building can be simulated and predicted with high accuracy.
Moreover, even when information is changed, for example, when the material is changed or the capacity of the yard is changed, the changed productivity can be calculated immediately, so that information useful for optimum productivity can be provided to the decision maker.
It can be warned that excessive productivity becomes low or high, and the construction production plan can be effectively calculated based on this.
In addition, based on the construction production plan calculated in this manner, the material procurement plan can be calculated per unit time, for example, day by day, so that by placing the material in the external material procurement place, It is possible to prevent the problem caused by the lowering problem or the inventory from being originally prevented.
FIG. 1 is a graph showing the variation between a construction production plan and predicted productivity, which explains that the variation may lead to excessive cost or air extension.
Figure 2 is a schematic diagram of a system for carrying out the method according to the invention.
3 is a flow chart for explaining the method according to the present invention.
4 is a schematic view for explaining a steel frame construction, which is an embodiment for explaining the present invention.
FIG. 5 is a graph showing productivity as a result when applied to a steel frame construction according to an embodiment of the present invention. FIG. 5 (a) shows the productivity of steel frame construction of a columnar steel, The productivity of the construction is shown, and (c) shows the sum.
Hereinafter, the "building information model" means data used in the above-mentioned BIM and has the IFC format according to the international standard. As will be described later, various information is input from the building information input unit to generate a building information model. The building information input unit may be an information processing apparatus using any method, for example, hardware equipped with software such as Revit.
Hereinafter, an "object" included in the building information model refers to various objects constituting the building, and may include, for example, a wall, a floor slab, a roof, a ceiling, a window, a door and the like. Any component included in a building can form an object.
In the following, the dictionary definition of "productivity" is defined as the contribution of production factor to production activity, or the value quantified as the progress of construction when the same resource is input in the present invention. Since the value is a quantification value, there is no separate unit. For example, when the productivity is 1.2, the progress of the construction is 50% larger when the same resource (materials, human resources, time resources, etc.) is input, compared with 0.8 when the productivity is 0.8.
Description of the system
Referring to Figure 2, a system for performing the method according to the present invention is described.
The system for performing the method according to the present invention includes a building
The building
The building
The
For example, in the case of a steel structure building, the type, size, weight, and cost of the steel used for the column or beam may be included.
Therefore, if the column type steel identified in the building information model is 100 types each as type A and type B, and the beam type is 200 types each as type A and type C, 300 types of A type,
The
The necessary
For example, in the case of a steel structure building, information of (1) column steel and (2) beam steel is required for productivity calculation and is stored in the
The material
The additional
For example, if the building is a steel structure, it is desirable to include the capacity of the stockyard required for the various types of sections, which will be described later with examples of steel frame construction.
In addition, it is desirable to know the number of erection works to be able to simulate productivity over time.
In addition, according to the simulation method, it may further include work available work, the type of section steel, work height, whether to use the tower crane, and the number of workers.
The
The present invention is not related to the productivity simulation method itself, and any simulation method known in the art can be used, and a detailed description thereof will be omitted.
The production
The
Explanation of method
Hereinafter, a specific productivity simulation method according to the present invention will be described with reference to FIG.
Here, with reference to FIG. 4 and FIG. 5 together, a case of a steel structure building will be described as an example.
Of course, the present invention can be applied to any building other than the steel structure. In this case, necessary information confirmed in the
Before describing the concrete method, the construction sequence of the steel structure building will be described with reference to FIG.
The process begins, the required section steel is loaded into the truck, the truck enters the scene (truckEnter), the truck moves to the yard stock (driveToUnload), unloads the section (unloading) (UnbatchCol), and it is necessary to select one column steel (unbatchCol), and hold the column steel on the ground. (HangCol), lift the columns one by one (arrangeCol), arrange them at the proper points (arrangeCol), build up the column steels roughly (erectCol), build the column steels precisely to reach the desired final layer batchCol), then select the appropriate number of beams to be erected (pickupBe), select one beam steel (unbatchBe), prepare safety material (equipSafety) After preparing the turbulent steel (hangBeam), lift the beams one by one (liftBeam), align them to the proper points (arrangeBe), set up the rough steel beams (erectBeam), erect (batchBe) Check the vertical and horizontal status of the materials (checkAll), erect all the erected materials correctly and fix them (erectAll), and the process is finished.
3, the method according to the present invention will be described.
First, a building information model is generated through the building information input unit 100 (S100).
Next, through the necessary
The necessary information in step S200 of the steel structure building includes column steel and beam steel beams.
Next, through the material
That is, column steel beams and beam steel beams are extracted from the building information model in a steel structure building.
Next, additional information necessary for the productivity simulation is inputted through the additional
In a steel structure building, it is preferable to include a capacity of a yard (stockyard), and it is more preferable to include the number of times of steel erection works.
Next, through the
The result as shown in Fig. 5 can be outputted in the steel structure building.
In the example shown in Fig. 5, it is assumed that the columnar steel is constructed four times during steel building work, and the construction of the beam steel is performed four times after each work. (That is, the steel framing work is inputted as additional information.)
Fig. 5 (a) shows the result of the productivity simulation according to the construction of the columnar steel, Fig. 5 (b) shows the productivity simulation result according to the work of the beam steel, Fig. 5 The result of the productivity simulation according to construction is shown.
As shown in the figure, it was confirmed that optimum productivity was obtained at the time of construction of the second columnar steel.
On the other hand, the present inventor carried out a number of experiments while inputting various additional information. Thus, it was confirmed that the information contributing to the high productivity of the pillar-forming work of the second column was the capacity of the yard.
That is, in the construction of the steel structure building, the productivity changes depending on the capacity of the yard.
The productivity is simulated, and the productivity change is calculated. The production
The productivity change, which is a simulation result in step S500, is a change in productivity over time, so that the construction amount per unit time can be determined based on the change in productivity. In other words, the construction plan includes the necessary discretionary information per unit time.
For example, in the case of a steel structure building, the optimal amount of work is determined in one day (unit time) in S500, and the optimal amount of column and beam steel is determined accordingly.
Such a plan is established in the entire construction period, so that the production
Meanwhile, in another embodiment of the present invention, after a construction production plan according to a predetermined time is further inputted through a production plan input module (not shown), the comparison is made with the productivity change over time as shown in FIG. 5 The validity of the construction production schedule according to the predetermined time may be verified.
That is, if a construction production schedule over time is greater than a time productivity change, a warning may be output to guide the decision maker to change the construction production schedule.
Next, the
For example, in case of a steel structure building, the material required for January 3 is 50 pieces of A-type steel and 30 pieces of B-type steel, and on January 4, 20 pieces of A type steel, 40 pieces of C type steel , The order book will be automatically sent to the external material supplier that supplies each type of section steel, and the external material supplier will only supply the section steel on that date.
In this way, only the required number of sections will be loaded on the yard in the construction site, so there is no problem in productivity due to the narrow capacity of the yard.
In addition, since the required amount of materials will be loaded on the yard in accordance with the progress of the construction work on that day, ie, productivity, there is little possibility of stock problems remaining in the construction site.
While the present invention has been described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims. It will be appreciated that embodiments are possible. Accordingly, the scope of protection of the present invention should be determined by the claims.
100: building information input unit
110: Material database
200: information extracting unit
210: required information database
250: Required Information Decision Module
260: Material information extraction module
300: Additional Information Input
400: Productivity Simulator
500: Production Planning Decision Unit
600: Material dispatcher
Claims (8)
(a) generating a building information model through the building information input unit 100 of the system;
(b) through the necessary information determination module 250 of the system, the necessary information necessary for the productivity simulation is determined according to a predetermined method;
(c) extracting necessary information in the step (b) from the building information model in the step (a) through the material information extraction module 260 of the system;
(d) inputting, through the additional information input unit 300 of the system, additional information necessary for productivity simulation according to a predetermined method;
(e) using the necessary information extracted in the step (c) and the additional information inputted in the step (d) through the productivity simulator 400 of the system to calculate a productivity change over time; And
(f) through the production plan determining unit (500) of the system, a construction production plan corresponding to a change in productivity over time is determined by a predetermined method,
The building information model is generated based on a building information model (BIM)
The necessary information in the step (b) includes steel for a column and section steel for a beam in a steel structure building,
The additional information in the step (d) further includes the number of erection works in the steel structure building,
In the step (e), the productivity simulation results for each column steel column construction and the productivity simulation results for each gantry steel are added to the steel building construction of the steel structure building, Comprising:
The construction production plan in the step (f) corresponds to the productivity change according to the time of the total construction calculated in the step (e) in the step (f). The number and the number of the section steel beams required per unit time of the steel building construction Including the number of sections,
Productivity simulation method.
The additional information in the step (d)
In addition to the capacity of the stockyard in the steel structure building,
Productivity simulation method.
The additional information in the step (d)
The steel structure of the present invention is characterized in that it further comprises a working day, a type of section steel, a working height, whether or not a tower crane is used,
Productivity simulation method.
After the step (f)
(g) ordering the material by the material supplier (600) of the system to the predetermined external material supplier according to the required resource information per unit time calculated in the step (f)
Productivity simulation method.
After the step (d)
(h) inputting a construction production schedule according to time through a construction production schedule input module of the system;
(i) when the productivity change over time in the step (e) overlaps with the construction production schedule according to the time in the step (f) and the construction production schedule according to time is larger than the change in productivity according to time, Further comprising the step of outputting a warning by the system,
Productivity simulation method.
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Cited By (3)
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KR102112748B1 (en) * | 2018-11-28 | 2020-05-21 | 주식회사 대림코퍼레이션 | Method for managing of Earth-volume and frame-volume resource using construction management plan and computer readable media thereof |
KR102112747B1 (en) * | 2018-11-28 | 2020-05-21 | 주식회사 대림코퍼레이션 | Method for planning of construction management using vertical relation and horizontal relation and program and computer readable media thereof |
KR102112749B1 (en) * | 2018-11-28 | 2020-05-21 | 주식회사 대림코퍼레이션 | Method for managing of the tower crane using construction management plan and computer readable media thereof |
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KR100487079B1 (en) | 2004-02-16 | 2005-05-03 | 오희준 | Resources civil official system and the method which use the internet web |
KR101396795B1 (en) * | 2013-10-14 | 2014-05-21 | 한국건설기술연구원 | Bim system and modeling method |
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KR101396795B1 (en) * | 2013-10-14 | 2014-05-21 | 한국건설기술연구원 | Bim system and modeling method |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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KR102112748B1 (en) * | 2018-11-28 | 2020-05-21 | 주식회사 대림코퍼레이션 | Method for managing of Earth-volume and frame-volume resource using construction management plan and computer readable media thereof |
KR102112747B1 (en) * | 2018-11-28 | 2020-05-21 | 주식회사 대림코퍼레이션 | Method for planning of construction management using vertical relation and horizontal relation and program and computer readable media thereof |
KR102112749B1 (en) * | 2018-11-28 | 2020-05-21 | 주식회사 대림코퍼레이션 | Method for managing of the tower crane using construction management plan and computer readable media thereof |
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