KR20170062632A

KR20170062632A - Method for performing BIM-integrated productivity simulation for generating construction plan

Info

Publication number: KR20170062632A
Application number: KR1020150167709A
Authority: KR
Inventors: 손정욱; 정운성
Original assignee: 이화여자대학교 산학협력단
Priority date: 2015-11-27
Filing date: 2015-11-27
Publication date: 2017-06-08
Also published as: KR101755901B1

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

[TECHNICAL FIELD] The present invention relates to a BIM-based productivity simulation method for calculating a production plan,

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 information determination module 250; (c) extracting necessary information in the step (b) from the building information model in the step (a) through the material information extraction module 260; (d) inputting additional information necessary for productivity simulation according to a predetermined method through the additional information input unit 300; (e) using the necessary information extracted in the step (c) and the additional information inputted in the step (d) through the productivity simulator 400 to calculate the productivity change over time, The building information model provides a productivity simulation method that is generated based on a building information model (BIM).

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 information input unit 100, an information extraction unit 200, an additional information input unit 300, and a productivity simulator 400.

The building information input unit 100 inputs information for generating a building information model. In one embodiment, the software may be hardware, such as Revit, but is not limited thereto.

The building information input unit 100 is interlocked with the material database 110.

The material database 110 includes information on the materials that can be set in the objects included in the building information model and their attributes.

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, B type 100 pieces and C type 200 pieces can be confirmed, and the size of the steel sheet of the type can be confirmed. It is also possible to calculate the space, manpower, and cost required for the warehouse.

The information extraction unit 200 includes a necessary information determination module 250 and a material information extraction module 260.

The necessary information determination module 250 determines what 'necessary information', which is information necessary for the productivity calculation of a specific type of building, can be interlocked with a separate necessary information database 210 for this purpose.

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 necessary information database 210, When the steel structure building is inputted, the necessary information determining module 250 determines that the information of the column steel and the beam steel is the necessary information.

The material information extraction module 260 can extract the necessary information determined by the necessary information determination module 250 from the building information model.

The additional information input unit 300 performs a function of inputting additional information required for productivity calculation although it is information that can not be confirmed in the building information model generated by the building information input unit 100. [

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 productivity simulator 400 means hardware equipped with software capable of productivity simulation.

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 plan determining unit 500 determines a construction production plan based on the simulated productivity by the productivity simulator 400. [ In addition, if there is an already determined construction production plan, it may perform the function of comparing the simulated productivity with this. The details are explained in the following method.

The material applicator 600 orders the material at a predetermined external material procurement place based on the construction plan determined by the production plan deciding unit 500. To this end, a separate transmission / reception module (not shown) is provided, so that it is possible to communicate with an external material supplier connected by wire or wirelessly.

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 necessary information database 210 or additional information inputted in the additional information input unit 300 will be changed.

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 information determination module 250, necessary information necessary for the productivity simulation is determined according to a predetermined method.

The necessary information in step S200 of the steel structure building includes column steel and beam steel beams.

Next, through the material information extraction module 260, necessary information determined in step S200 is extracted from the generated building information model.

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 information input unit 300 according to a predetermined method (S400).

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 productivity simulator 400, the necessary information extracted in the step S300 and the additional information inputted in the step S400 are used to calculate the productivity change over time.

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 plan determining unit 500 determines the construction production plan based on the productivity change (S600).

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 planning decision unit 500 establishes the construction production plan. According to the established construction production plan, the workers and resources are maximally put in place , And the opposite when productivity is low.

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 material dispatcher 600 orders the material in units of unit time according to the construction production schedule determined in the step S600. That is, the required material amount for each type is automatically transferred to the external material supplier by a separate transmission / reception module.

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

(a) generating a building information model through the building information input unit 100;
(b) determining necessary information necessary for the productivity simulation according to a predetermined method through the necessary information determination module 250;
(c) extracting necessary information in the step (b) from the building information model in the step (a) through the material information extraction module 260;
(d) inputting additional information necessary for productivity simulation according to a predetermined method through the additional information input unit 300;
(e) using the necessary information extracted in the step (c) and the additional information inputted in the step (d) through the productivity simulator 400 to calculate the productivity change over time,
Wherein the building information model is generated based on a BIM (building information model)
Productivity simulation method.

The method according to claim 1,
The necessary information in the step (b)
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a column structure for a steel structure,
Productivity simulation method.

3. The method of claim 2,
The additional information in the step (d)
In steel-framed buildings, including the capacity of the yard (stockyard)
Productivity simulation method.

The method of claim 3,
The additional information in the step (d)
A steel structure, comprising a number of erection works in the building,
Productivity simulation method.

5. The method of claim 4,
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.

6. The method according to any one of claims 1 to 5,
After the step (d)
(f) through the production plan determining unit (500), a construction production plan corresponding to a change in productivity over time is determined by a predetermined method,
The construction production plan includes the necessary resource allocation information per unit time,
Wherein the predetermined method comprises proportionally matching a change in productivity with the time and a required amount per unit time,
Productivity simulation method.

The method according to claim 6,
After the step (f)
(g) transmitting the material to the predetermined material supplier in accordance with the required resource information per unit time calculated in the step (f) by the material supplier 600, and ordering the material.
Productivity simulation method.

6. The method according to any one of claims 1 to 5,
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, Further comprising the step of:
Productivity simulation method.