KR20180015911A - Method for automatic sampling of condensation of building using a BIM of construction - Google Patents

Abstract

The present invention relates to a method for automatically sampling an expected condensation part using the BIM of a building, and a system therefor. More specifically, a TDR database is constructed through electrothermal analysis simulation of data having required information on an evaluation part of the building. The constructed TDR database is applied to a BIM model to automatically extract an expected condensation part which is below a reference level. It is possible to reduce analysis time and working time.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatically extracting a condensation expected area using a BIM of a building,

The present invention relates to a method and a system for automatically extracting a condensation expected area using a BIM of a building, in which a temperature difference ratio (TDR) database is constructed for evaluating the dew condensation of a building, A method and system for automatically extracting condensation expected areas from a BIM model.

In general, buildings such as apartment houses are usually constructed with external insulation rather than external insulation. Therefore, heat insulation materials are not continuously formed at the junctions where walls, slabs, walls and walls meet, It is reality that is doing. In order to fundamentally solve the condensation problem in the Ministry of Land, Transport and Maritime Affairs,

The 'Design Criteria for Preventing Condensation of Apartment Buildings' mentioned above is specified as the minimum performance criterion that should be reflected in the design 'Temperature Difference Ratio (TDR)', (Thermally Window and Physibel), which are mainly used in electrothermal analysis programs, are proposed to measure the temperature difference ratio (TDR) by energy simulation using a computer program suitable for ISO (International Organization for Standardization) Lt; / RTI >

FIG. 1 is a diagram showing a method of adiabatic and dew condensation analysis using a conventional heat transfer analysis program, Therm & Window and a Physibel, wherein the thumb & And the coordinate of the X, Y, and Z axes of the corresponding region is input to generate a layer and a grid to be suitable for the electrothermal analysis program, This model is used to model the required part and to analyze the modeled condensation analysis part using the thermal analysis programs Therm & Window and Physibel to evaluate the thermal performance of the building's insulation and condensation. . After that, according to the analysis result of the heat transfer performance, the temperature difference ratio (TDR) evaluation method, which is a method of evaluation evaluated in the design standard for prevention of condensation in the apartment house, is performed.

The temperature difference ratio (TDR) evaluation is performed by manually checking the minimum surface temperature on the simulation result screen of Therm & Window and Physibel, and then evaluating the heat insulation and condensation grade by using a predetermined calculation formula , There is a fear that the reliability of the analysis result according to the subjective judgment intervention and the omission of the shape information of the building may be lowered in the process of checking the minimum surface temperature.

In order to use the above-mentioned electrothermal analysis program, the specialist of the adiabatic condensation analysis must perform the work of modeling the expected condensation part of the building according to the electrothermal analysis program based on the 2D drawings. Therefore, And there is a disadvantage that the time required for the thermal insulation and condensation evaluation is increased by the time required for modeling.

As a method for solving such a weakness, it is necessary to improve existing processes using BIM.

Generally, the BIM refers to a building that provides a reliable basis for decision-making during the construction and lifecycle of buildings by physical or functional characteristics of the building in all fields of construction including civil engineering, civil engineering, and plant. It is an abbreviation of Building Information Modeling (BIM), which refers to a 3D digital model and business procedures for its creation.

In this BIM, a list is created by classifying a building as a spatial unit and a partial object which are physical units, and a spatial object is an object defining a range of a space such as a floor, a zone, and a room of a building, Refers to an object such as a column, a wall, a door, a window, and the like, and refers to an object such as identification, shape, physical property, .

These BIMs can reflect rapid decision making during design change at the initial design stage, which can increase productivity, and the utility and necessity of integrated database to manage all stages of construction from architectural design to construction and maintenance It is widely used because it is recognized as the value of utilization of integrated data through design and construction process.

In order to improve the quality of public building design and the development of the domestic construction engineering industry, PPS is obliged to apply BIM (Building Information Modeling) to all projects ordered from the PPS since 2016. By linking these BIMs to the heat insulation and condensation analysis process, it is possible to simplify the work efficiency and analysis evaluation process by using accurate data, and to improve the reliability of the evaluation result.

However, despite the fact that 3D construction data is created through BIM implementation, due to the lack of BIM interworking technology, 3D data must be rewritten according to interpretation programs such as Physibel and Therm & Window. The BIM is not used in the analysis of the insulation and the condensation of the building.

Therefore, a structure database with TDR value, which is the reference value of the insulation and condensation analysis of wall joints, windows, doors, etc., which are vulnerable to condensation of buildings, is constructed and applied to the BIM model, There is a need to reduce the inefficient working time such as analysis and correction of 2D-based design books for heat transfer analysis and to improve the efficiency of the dew condensation analysis process.

SUMMARY OF THE INVENTION The present invention has been made to overcome the above-described problems of the related art, and it is an object of the present invention to provide a temperature difference ratio (TDR) database and apply it to a BIM model to shorten the analysis time required in selecting a condensation- A method and system for automatically extracting condensation expected areas in a BIM model using a temperature difference ratio (TDR) database for evaluating a condensation analysis to enable efficient utilization of BIM.

According to an aspect of the present invention, there is provided a method for automatically extracting a dew condensation area using a BIM of a building, the method including: extracting all the detail shapes of the evaluation site and each material constituting the structure, A temperature difference ratio database to have a temperature difference ratio (TDR) value, and applying the constructed database to the preformed BIM model, thereby automatically extracting the expected condensation portion of the building.

The method of automatically extracting the expected area of condensation using the BIM of the building of the present invention having the above-described structure and the effect of the system are as follows.

The present invention relates to a model used in an electrothermal analysis program, which is a work process required for conventional insulation and dew condensation analysis, by making the temperature difference ratio (TDR) value database and combining the data with the information of the apartment house BIM model There is no need to remodel, and it is possible to shorten the working time and the analysis time due to the omission of the reprocessing process.

 In addition, by using the pre-calculated interpretation site data instead of the interpretation site selection by subjective judgment of the analyst, it is possible to automatically select and extract the predicted site of condensation in a reliable apartment house by selecting an accurate condensation predicted site.

In addition, by using BIM, it can contribute not only to localization of BIM technology, but also to reliance on foreign technology.

In addition, by spreading the technology of BIM element, it is a very advanced invention which has the advantage of contributing to the activation of technology such as improving the perfection of environment friendly BIM by improving the professionalism as well as shaping the BIM expert manpower.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a method of adiabatic and dew condensation analysis using a conventional heat transfer analysis program,
FIG. 2 is a flowchart of a method for automatically extracting a dew condensation expected area according to the present invention,
FIG. 3 is a diagram showing requirements information for building a temperature difference ratio (TDR) value database,
4 shows an example of a TDR database,
5 is a diagram showing another example of the TDR database,
6 is a configuration diagram of an automatic condensation expected area automatic extraction system of the present invention.

Hereinafter, a BIM object extraction and conversion automation module and method thereof for evaluating the heat insulation and condensation of a building of the present invention will be described in detail with reference to the accompanying drawings.

It is to be noted, however, that the disclosed drawings are provided as examples for allowing a person skilled in the art to sufficiently convey the spirit of the present invention. Accordingly, the present invention is not limited to the following drawings, but may be embodied in other forms.

In addition, unless otherwise defined, the terms used in the description of the present invention have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. In the following description and the accompanying drawings, A detailed description of known functions and configurations that may be unnecessarily blurred is omitted.

FIG. 2 is a flowchart of a method for automatically extracting a dew condensation expected area according to the present invention, and FIG. 3 is a diagram illustrating requirements information for building a temperature difference ratio (TDR) value database.

Referring to the drawings, a method for automatically extracting a dew-condensation expected area according to the present invention includes a step S1 of adding a parameter to a BIM model of a previously-created building to extract a dew condensation part of the evaluation area.

In this case, as shown in the table of FIG. 3, the method of adding parameters to the created BIM model is to input the requirement information such as the material classification of the building and the thermal conductivity value through the material property input window when creating the BIM model, When inputting information, the building material is classified into a frame material, a finishing material, a waterproof material, a thermal insulation material, and a soil, and the thermal conductivity of the separated materials is set.

The reason for adding parameters to the BIM model is to find the same case as the data constructed in the TDR database in the BIM model with parameters added.

FIG. 4 illustrates an example of the TDR database. The TDR database includes structural information, site information, material information, and physical property information.

The site information, material information and physical property information of the building are basically classified according to the basic structure information of a building such as a wall, a slab, a window, and a door of the building.

At this time, if the structural information is a wall or a slab, the site information is an outer wall, a roof, a bottom floor, an intermediate floor, and a composite wall, and the material information thereof is concrete, brick, block, steel, wood as a structural material, Bead method, extrusion method, rigid urethane, gypsum board, mortar, tile, and stone as a finishing material, and specific heat, heat flow rate, thermal conductivity, specific heat of volume, transmitted solar radiation and solar heat acquisition factor as physical property information.

Particularly, as shown in FIG. 5, the TDR database of the embodiment of the present invention is constructed by inputting site information of a building, a cross-sectional shape of each site, a material name, physical property information (thickness, thermal conductivity, do.

Next, the present invention includes a step S2 of applying a TDR database to the BIM model, which is a step of matching mutually matching values in attribute information of the TDR database and the BIM model.

Next, the TDR evaluation of the corresponding part of the wall joint, window, door, etc. presented in the appropriate design standard of the site is performed (S3).

The TDR evaluation is performed to derive the TDR evaluation value (S4), and the expected condensation site is extracted (S5) as the evaluation region of the TDR below the reference value, so that the BIM designer can modify the BIM model of the expected region (S6).

For example, according to the TDR evaluation, the value of a temperature difference ratio (TDR) of a building is calculated as a main judgment criterion according to the judgment criteria of the statutory performance of the condensation prevention design of the apartment house in Korea, The difference ratio is the temperature difference between the room and the outside surface temperature difference between the room and the room to be applied, and is calculated according to the following equation, and the range is calculated as a value between 0 and 1.

At this time, the calculation formula of TDR (temperature difference ratio), which is a standard for building evaluation by the module of the present invention, is as follows.

At this time, the dew condensation preventing performance standards for the main parts are shown in Table 1 below.

For example, according to the 'judgment criteria for statutory performance of the condensation prevention design for apartment house in Korea,' the value of the temperature difference ratio (TDR) of the building is calculated as a main criterion, And the temperature difference between the inside of the room and the room surface of the room to be covered by the temperature difference between the outside air and the outside air is calculated according to the following equation and the range is calculated as a value between 0 and 1.

Target site
TDR value
Area 1
Area 2
Area 3
Introduction
Main door
Escape space fire door
Door
0.30
0.33
0.38
doorframe
0.22
0.24
0.27
Wall joint
0.23
0.25
0.28
Window directly touching the outside air
Glass center area
0.16 (0.16)
0.18 (0.18)
0.20 (0.24)
Glass corner area
0.22 (0.26)
0.24 (0.29)
0.27 (0.32)
Window frames and window frames
0.25 (0.30)
0.28 (0.33)
0.32 (0.38)

Note 1) Each target site should be satisfied

Note 2) Figures in parentheses are applicable to aluminum (AL) window.

Note 3) The composite window with PVC window and aluminum window applies the average value of TDR value for PVC window and aluminum window.

Table 1 shows the results of simulation analysis of the electrothermal analysis program as a standard for the prevention of dew condensation in each region considering the region. The TDR value in the analysis region should be derived from the table, and the analyzed value should be calculated to be less than the reference TDR value .

Region 1, Region 2 and Region 3 in Table 1 are as shown in Table 2 below.

area
Area
Area 1
Ganghwa, Dongducheon, Icheon, Yangpyeong, Chuncheon, Hongcheon, Wonju, Yeongwol, Inje,
Pyeongchang, Cheorwon, Taebaek
Area 2
Gyeonggi Province (excluding Dongducheon, Icheon, Yangpyeong), Gangwon-do (Chuncheon, Hongcheon, Wonju, Yeongwol, Inje, Pyeongchang, Cheorwon, Taebaek, Sokcho, Gangneung except for Incheon Metropolitan City, ), Chungcheongbuk-do (excluding Yeongdong), Chungcheongnam-do (excluding Seosan and Boryeong), Jeollabuk-do (Imsil and Longevity), Gyeongsangbuk-do (Mungyeong, Andong,
Area 3
Busan, Daegu, Gwangju, Ulsan, Gangwon (Sokcho, Gangneung), Chungcheongbukdo (Youngdong), Chungcheongnamdo (Seosan, Boryeong) ), Gyeongsangnam-do (excluding Geochang), Jeju Special Self-Governing Province

1) Region I, Region II, and Region III are divided into 20 ° C, -15 ° C, and -10 ° C, respectively, based on the monthly average daily minimum temperature of January in January.

Therefore, as described above, the present invention is based on a database of temperature difference ratio (TDR) values and combining the data with the information of the prefabricated apartment house BIM model, It is not necessary to remodel the model used in the analysis program, and it is possible to shorten the working time and analysis time due to the omission of the reprocessing process.

 In addition, by using the pre-calculated analysis site data rather than by the subjective judgment of the analysis expert, it is possible to automatically select and extract the expected condensation area of the reliable apartment house by selecting the accurate condensation expected site Lt; / RTI >

FIG. 6 is a block diagram of a system for automatically extracting a dew condensation expected area using the BIM of the present invention. The TDR database is constructed through the heat transfer analysis simulation of the data having the requirement information of the evaluation site, And automatically extracting the expected part of the condensate which is below the reference value, and automatically extracting the condensation expected area using the BIM of the building.

Specifically, a parameter addition module 10 for adding a parameter to a BIM model of a previously-built building stored in the BIM database 60 to extract a dew condensation point in the evaluation site, a TDR database 50 and a BIM model A matching module 20 for matching mutually matching values in the property information of the BIM model and applying the TDR database 50 to the BIM model and a TDR evaluation module for evaluating the TDR of a corresponding part of the wall joint, An extraction module (40) for extracting a condensation expected site as an evaluation site of the TDR below the reference value when the TDR evaluation is performed and the TDR evaluation value is derived; And its operation is the same as that described above with reference to FIGS. 2 to 5, so a detailed description thereof will be omitted.

10; Additional parameters module
20; Matching module
30; Evaluation module
40; Extraction module
50; TDR database
60; BIM database

Claims (10)

The TDR database is constructed through the electrothermal analysis simulation of the data having the requirement information of the evaluation part of the building, and the constructed TDR database is applied to the BIM model to automatically extract the expected part of the condensation which is below the reference value. Automatic Extraction Method of Condensation Prediction Area Using BIM.
The method according to claim 1,
(S1) adding parameters to the BIM model of the prefabricated building to extract a dew condensation site in the evaluation site;
A step S2 of applying a TDR database to the BIM model by matching mutually matching values in attribute information of the TDR database and the BIM model;
(S3) of evaluating the TDR of a corresponding part of the wall joint, window, door,
The TDR evaluation is performed to derive a TDR evaluation value (S4), and a condensation expected site is extracted (S5) as an evaluation region of the TDR below the reference value; The method of claim 1 or 2,

3. The method of claim 2, wherein the parameter is added to the pre-
A method for automatically extracting expected areas of condensation using BIM, characterized by inputting the requirements information of a building through a material property input window when creating a BIM model.
The method of claim 3,
Wherein the building material is divided into a framing material, a finishing material, a waterproof material, a thermal insulation material, and a soil when the request information is input.
The method of claim 1, wherein the TDR database includes structure information, site information, material information, and property information.
6. The method of claim 5,
Wherein the TDR database displays a cross-sectional shape according to a type of the site according to site information of a building, and includes a material name and physical property information used in the displayed site.
[6] The method of claim 5,
Wherein the at least one of the specific heat, the heat flow rate, the thermal conductivity, the specific heat of the volume, the transmitted solar radiation, and the solar heat acquisition rate is at least one or more.
A computer-readable recording medium containing a program for a method for automatically extracting condensation expected portions according to any one of claims 1 to 7.
The TDR database is constructed through the electrothermal analysis simulation of the data having the requirement information of the evaluation part of the building, and the constructed TDR database is applied to the BIM model to automatically extract the expected part of the condensation which is below the reference value. Automatic Extraction System of Condensed Expected Area Using BIM.
10. The method of claim 9,
A parameter addition module (10) for adding a parameter to a BIM model of an existing building stored in the BIM database (60) in order to extract a dew condensation portion in the evaluation portion of the building;
A matching module 20 for applying a TDR database 50 to the BIM model by matching mutually matching values in the TDR database 50 and the attribute information of the BIM model;
Site An evaluation module (30) for conducting TDR evaluation of a corresponding part of a wall joint, window, door,
An extracting module 40 for extracting the expected condensation site as an evaluation site of the TDR below the reference value when the TDR evaluation is performed and the TDR evaluation value is derived; Wherein the BIM is used to automatically extract condensation expected areas.

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