KR101626498B1 - Apparatus and method for calculating wind load considering topographic factor - Google Patents

Abstract

The present invention relates to an apparatus and a method for calculating a wind load considering a topographic coefficient. A wind load calculation device according to an embodiment of the present invention includes a first target area setting unit that sets an area between a crossing line spaced by a predetermined length in a target area or a crossing line having a preset angle of throat as a first target area; An information obtaining unit obtaining position and height information of a plurality of points in the first target area; A second target region setting unit for determining a vertex of the first target region using the position and height information and setting a second target region including the vertex but different from the first target region; An inclination angle calculating section for calculating an angle of inclination of a plurality of target points in the second target area; And a windward side slope calculating unit for statistically processing the slope of the target point to calculate a windward side slope.

Description

[0001] APPARATUS AND METHOD FOR CALCULATING WIND LOAD CONSIDERING TOPOGRAPHIC FACTOR [0002]

The present invention relates to an apparatus and a method for calculating a wind load considering a topographic coefficient.

The influence of wind in the design of structures is one of the items to be considered. Wind characteristics such as wind velocity or wind direction can be affected by the surrounding topography and may threaten the safety of the structure if the wind speed is accelerated by the surrounding terrain. Therefore, it is required to reflect the change of the wind speed according to the surrounding terrain into the design of the structure.

In order to consider the change of the wind velocity by the terrain, the terrain factor is introduced when calculating the design wind speed. The terrain factor is set to 1.0 for areas that do not affect the wind, such as flat land, but greater than 1.0 for areas that change wind speed, such as mountains, hills, or slopes.

The terrain factor is calculated on the basis of the specified windward and downwind slopes according to the wind direction of the surrounding terrain. However, in the past, the surrounding terrain as a reference for calculating the terrain factor has been subjectively and arbitrarily determined by the designer. As a result, the terrain coefficient calculated by the conventional method does not sufficiently reflect the influence of the terrain on the wind, so that the wind load may be calculated to be too large or small.

It is an object of the present invention to provide a wind load calculation device and method that can quantitatively and reasonably reflect the influence of a terrain on the wind.

A wind load calculation device according to an embodiment of the present invention includes a first target area setting unit that sets an area between a crossing line spaced by a predetermined length in a target area or a crossing line having a preset angle of throat as a first target area; An information obtaining unit obtaining position and height information of a plurality of points in the first target area; A second target region setting unit for determining a vertex of the first target region using the position and height information and setting a second target region including the vertex but different from the first target region; An inclination angle calculating section for calculating an angle of inclination of a plurality of target points in the second target area; And a windward side slope calculating unit for statistically processing the slope of the target point to calculate a windward side slope.

Wherein the first target area setting unit sets the area between the parallel lines facing each other in the target area as the first target area with the point where the structure is located, An intersection line intersecting each other can be set as the first target area.

The length between the parallel lines may be zero or more, or the angle of the nip between the crossing lines may be 0 or more and 180 degrees or less.

Wherein the information obtaining unit comprises: an electronic map for a plurality of points in the first target area; And metrology data obtained by surveying a plurality of points in the first target area; The position and height information of the plurality of points can be obtained from at least one of the plurality of points.

Wherein the information obtaining unit obtains position and height information of the plurality of points in the first target area by using an interpolation method based on at least one of an electronic map for the target area and survey data for the target area, Generating a digital elevation model for the target area by using at least one of an electronic map for the target area and survey data for the target area, calculating a position of the plurality of points in the first target area from the digital elevation model And height information.

The second target area setting unit may determine the highest point among the plurality of points as the vertex.

The second target area setting unit may select three or more points that are consecutive in the order of the horizontal distance between the point and the reference line orthogonal to the parallel line passing through the point and the position of the structure among the plurality of points, Selecting at least three consecutive points in the horizontal distance between the intersections of the intersection lines in the order of horizontal distance between the point and the reference line or the intersection, It is possible to determine the corresponding point as the vertex.

The horizontal distance between the point and the baseline or the intersection is negative and the baseline or the intersection is centered within the first target area in the first target area, The horizontal distance between the point and the reference line or the intersection point may be a positive number.

Wherein the second target area setting unit sets a point at which the horizontal distance between the highest point among the plurality of highest points and the point at which the structure is located is shortest when the highest point corresponding to the intermediate point obtained from the plurality of points is a plurality, It can be determined as a vertex.

Wherein the second target area setting unit sets a polygon having the vertex as a vertex, a sector having the vertex as a center, or a line segment having the vertex as one end, Area.

Wherein the windward side slope calculating unit calculates one of a maximum value, a median value, an average value and a minimum value of the slopes of the plurality of target points as the windward side slope, calculates a frequency distribution of the slopes of the plurality of target points, The gradient value of the gradients having the highest frequency in the distribution is determined as the windward side slope or the frequency distribution of the gradients of the plurality of target points is calculated and the gradient of the slope of the target point belonging to the class having the largest frequency in the frequency distribution is calculated The average value can be determined as the windward side slope.

The wind load calculation device may further include a terrain coefficient calculating unit for calculating a terrain coefficient based on the windward side slope.

The terrain coefficient calculating unit may compare the terrain slope with a predetermined reference range and determine a terrain coefficient corresponding to the reference range to which the terrestrial side slope belongs as the terrain coefficient of the target area.

A method for calculating a wind load according to an embodiment of the present invention includes the steps of setting a region between a crossing line having a preset parallelism or a predetermined nip angle in a target region as a first target region; Obtaining position and height information for a plurality of points in the first target area; Determining a vertex of the first target area using the position and height information; Setting a second target region including the vertices but different from the first target region; Estimating an inclination of a plurality of target points within the second target area; And calculating a windward slope by statistically processing the slope of the target point.

Wherein the step of setting an area between the parallel lines or intersecting lines in the object area as a first target area comprises: placing a region between parallel lines facing each other in the object area across a point where the structure is located, ; And setting an area between intersecting lines intersecting at a point where the structure is located in the object area as the first target area.

The length between the parallel lines may be zero or more, or the angle of the nip between the crossing lines may be 0 or more and 180 degrees or less.

Wherein the obtaining of the position and height information comprises: an electronic map for a plurality of points in the first target area; And metrology data obtained by surveying a plurality of points in the first target area; And obtaining position and height information of the plurality of points from at least one of the plurality of points.

Wherein the obtaining of the position and height information comprises: using an interpolation method based on at least one of an electronic map for the object area and survey data for the object area, Obtaining height information; Or an electronic map for the target area and survey data for the target area to generate a numerical elevation model for the target area, and derive, from the numerical elevation model, the plurality of points in the first target area And obtaining position and height information.

The step of determining the vertex may include: determining the highest point among the plurality of points as the vertex.

The step of determining the vertex may include: selecting three or more points that are consecutive in order of the horizontal distance between the point and the reference line orthogonal to the parallel line passing through the point and the point at which the structure is located among the plurality of points, Selecting three or more consecutive points in order of horizontal distance between intersections of the intersection lines; And determining the corresponding point as the vertex when the middle point in the horizontal direction between the point and the reference line or the intersection points among the three or more selected points is the highest point.

The horizontal distance between the point and the baseline or the intersection is negative and the baseline or the intersection is centered within the first target area in the first target area, The horizontal distance between the point and the reference line or the intersection point may be a positive number.

Wherein the step of determining as the vertex comprises: when a highest point corresponding to the intermediate point obtained from the plurality of points is a plurality of points, a point having a shortest horizontal distance from a point at which the structure is located among the plurality of highest points, As a vertex.

The step of setting the second target region may include: forming a polygon having the vertex as a vertex, a sector having the vertex as a center, or a line segment having the vertex as one end, And setting it as a second target area.

Wherein the step of calculating the windward side slope comprises: determining one of a maximum value, a median value, an average value, and a minimum value of the slopes of the plurality of target points as the windward side slope; Calculating a frequency distribution of the gradient of the plurality of target points and determining a rank value of the class having the largest frequency in the frequency distribution as the windward side slope; Or a step of calculating a frequency distribution of the slopes of the plurality of target points and determining an average value of the slopes of target points belonging to a class having the largest frequency in the frequency distribution as the windward slopes.

The wind load calculation method may further include calculating the terrain coefficient based on the windward side slope after calculating the windward side slope.

Wherein the step of calculating the terrain factor includes: comparing the windward slope with a preset reference range; And determining a terrain coefficient corresponding to a reference range to which the windward side slope belongs as a terrain coefficient of the target area.

The wind load calculation method according to the embodiment of the present invention can be implemented by a computer-executable program and recorded on a computer-readable recording medium.

The wind load calculation method according to an embodiment of the present invention may be implemented by a computer program stored in a medium for execution in combination with a computer.

According to the embodiment of the present invention, the wind load can be calculated by quantitatively and reasonably reflecting the influence of the terrain on the wind.

1 is an exemplary block diagram showing a wind load calculation apparatus according to an embodiment of the present invention.
2 is a view showing an example of a target area and a first target area set for calculating a wind load according to an embodiment of the present invention.
3 is a view showing an example of a target area and a first target area set for calculating a wind load according to another embodiment of the present invention.
4 is a view showing another example of a target area and a first target area set for calculating a wind load according to an embodiment of the present invention.
5 is a diagram showing another example of a target area and a first target area set for calculating a wind load according to another embodiment of the present invention.
6 is an exemplary diagram for explaining a process of determining a vertex of a first target area based on a horizontal distance between each point and a reference line or an intersection point and a height of each point according to another embodiment of the present invention.
7 is a diagram illustrating an example of a second target region set according to an embodiment of the present invention.
8 is a view showing an example of a second target region set according to another embodiment of the present invention.
9 is a view showing an example of a second target region set according to another embodiment of the present invention.
10 is a flowchart illustrating a method for calculating wind load according to an embodiment of the present invention.

Other advantages and features of the present invention and methods for accomplishing the same will be apparent from the following detailed description of embodiments thereof taken in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

Unless defined otherwise, all terms (including technical or scientific terms) used herein have the same meaning as commonly accepted by the generic art in the prior art to which this invention belongs. Terms defined by generic dictionaries may be interpreted to have the same meaning as in the related art and / or in the text of this application, and may be conceptualized or overly formalized, even if not expressly defined herein I will not.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. As used herein, the terms' comprise 'and / or various forms of use of the verb include, for example,' including, '' including, '' including, '' including, Steps, operations, and / or elements do not preclude the presence or addition of one or more other compositions, components, components, steps, operations, and / or components. The term 'and / or' as used herein refers to each of the listed configurations or various combinations thereof.

It should be noted that the terms such as '~', '~ period', '~ block', 'module', etc. used in the entire specification may mean a unit for processing at least one function or operation. For example, a hardware component, such as a software, FPGA, or ASIC. However, '~ part', '~ period', '~ block', '~ module' are not meant to be limited to software or hardware. Modules may be configured to be addressable storage media and may be configured to play one or more processors. ≪ RTI ID = 0.0 >

Thus, by way of example, the terms 'to', 'to', 'to block', 'to module' refer to components such as software components, object oriented software components, class components and task components Microcode, circuitry, data, databases, data structures, tables, arrays, and the like, as well as components, Variables. The functions provided in the components and in the sections ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ' , '~', '~', '~', '~', And '~' modules with additional components.

As used herein, the term "structure" is intended to encompass a building, a workpiece, a building, a window, an outdoor advertisement, a bridge, a sound barrier, etc. and means all objects placed in space and subjected to wind loads.

When designing the structure, the design wind speed is calculated to calculate the design load by wind. On the other hand, the design wind speed proposed in KBC 2009 can be calculated by the following equation:

Here, V ₀ is the default region wind speed, wind speed coefficient K _zr is the height distribution, K _zt is the priority coefficient of the terrain coefficient, I _w is a structure for consideration of the effect of topography.

Among these, the coefficient of terrain coefficient (K _zt ) is a coefficient considering the terrain type of wind speed addition, and it is set to 1.0 in areas that do not affect the wind like flat land. However, in areas that require wind velocity premium, such as mountains, hills and sloping terrain coefficient including the vertex height (H) height of the surface from the vertex of the terrain by the following equation such, the upwind side of the horizontal distance (L _u) , The horizontal distance (x) between the vertex and the location of the structure, and so forth.

1 is a block diagram showing a wind load calculation apparatus 100 according to an embodiment of the present invention.

1, the wind load calculation apparatus 100 includes a first target area setting unit 111, an information obtaining unit 112, a second target area setting unit 113, a tilt calculating unit 114, And a windward side inclination calculation unit 115. [

The first target region setting unit 111 may set a region between the cross lines separated by a predetermined length in the target region or the intersecting lines having the predefined nip angle as a first target region. The information obtaining unit 112 may obtain position and height information of a plurality of points in the first target area. The second target area setting unit 113 may determine a vertex of the first target area using the position and height information, and may set a second target area including the vertex but different from the first target area . The inclination calculation unit 114 may calculate the inclination of a plurality of target points in the second target area. The windward side slope calculating unit 115 may calculate the windward side slope by statistically processing the slope of the target point.

According to an embodiment of the present invention, the first target region setting unit 111 may set the first target region using parallel lines or cross lines set in a predetermined target region.

2 is a diagram showing an example of a target area 20 and a first target area 21 set to calculate a wind load according to an embodiment of the present invention.

The object area 20 may have a predetermined shape and size. According to an exemplary embodiment, the object area 20 may be a circular area having a predetermined radius around a point C at which the structure is located. However, But is not limited thereto. The radius of the object area 20 may be set to a value smaller than 40 times the height of the structure and 3 Km, but the size of the object area is not limited thereto.

According to an embodiment of the present invention, the first target region setting unit 111 sets the region 21 between the parallel lines 201 and 202 separated by a predetermined length L in the target region 20, 1 target area.

For example, as shown in FIG. 2, the first target area setting unit 111 sets a parallel line 201 (see FIG. 2) facing each other in the target area 20 with a point C at which the structure is located. , 202 can be set as the target area. According to an embodiment, each of the parallel lines 201 and 202 may be spaced apart from the point C at which the structure is located by an equal distance L / 2, but between the parallel lines and the point C at which the structure is located The interval is not limited thereto.

3 is a diagram showing an example of a target region 20 and a first target region 22 that are set to calculate a wind load according to another embodiment of the present invention.

According to this embodiment, the first target region setting unit 111 sets the region 22 between the crossing lines 203 and 204 having the predefined angle of throttle (?) In the target region 20 to the first target region .

For example, as shown in FIG. 3, the first target region setting unit 111 may set the target region 20 to have a predetermined angle? At a predetermined angle? After setting the intersecting lines 203 and 204, the area 22 between the intersecting lines 203 and 204 can be set as the first target area.

According to an embodiment of the present invention, the length L between the parallel lines 201 and 202 may be zero or more. In other words, the parallel lines 201 and 202 are spaced apart from each other by a predetermined distance, and may be set to zero according to an embodiment.

4 is a view showing another example of the target area 20 and the first target area 21 set for calculating the wind load according to the embodiment of the present invention.

4, the distance L between the parallel lines 201 and 202 may be set to zero. In this case, the first target area 21 may have a straight line shape.

According to an embodiment of the present invention, the angle θ between the crossing lines 203 and 204 may be 0 or more and 180 ° or less. In other words, the intersection lines 203 and 204 not only extend apart from each other by a certain angle, but may also be set to zero according to the embodiment. In this case, the first target region between the intersection lines 203 and 204 may have a straight line shape as shown in FIG.

5 is a view showing another example of a target area 20 and a first target area 22 that are set to calculate a wind load according to another embodiment of the present invention.

5, according to another embodiment of the present invention, the angle of apex θ between the crossing lines 203 and 204 may be set to 180 °, in which case the first target area 22, Will coincide with the object area 20.

The information obtaining unit 112 may obtain position and height information of a plurality of points X in the first target area 21,

According to one embodiment, the information acquiring unit 112 generates an electronic map for a plurality of points X in the first target area 21, 22 and a digital map for the first target area 21, 22 (X) from at least one of the survey data obtained by surveying the plurality of points (X) in the plurality of points (X). The measurement data may be data obtained using at least one of a ground survey, a GPS survey, an aerial photogrammetry, a radar survey and a LiDAR survey, but the survey method for obtaining the survey data is not limited thereto .

According to one embodiment, the wind load calculation apparatus 100 may further include a storage unit 12. The storage unit 12 may store position information and height information for the plurality of points X. In this case, the information obtaining unit 112 may obtain the position information and the height information of the plurality of points X by calling the information stored in the storage unit 12. [

According to another embodiment of the present invention, the wind load calculation apparatus 100 may further include a communication unit 10. The communication unit 10 may be connected to a server providing geographical information on the plurality of points X.

For example, as shown in FIG. 1, the communication unit 10 may be connected to a server 200, for example, a geographic information system (GIS) that provides geographic information through a wired or wireless network, The controller 112 may obtain the height information of the plurality of points X from the server 200. [

The wind load calculation apparatus 100 may further include an input unit 13 and the position information and the height information of the plurality of points X may be input from the user through the input unit 13 have.

As described above, the information obtaining unit 112 obtains the position (X) of the plurality of points X from at least one of the electronic map and survey data for the plurality of points X in the first target area 21, And height information. However, the position and height information of the plurality of points X may be obtained by interpolation based on at least one of the electronic map and the measurement data according to the embodiment.

For example, the information acquiring unit 112 may acquire the first target area (the first target area) by interpolation based on at least one of the electronic map for the target area 20 and the survey data obtained by measuring the target area 21, 22) of the plurality of points (X).

The information obtaining unit 112 obtains the positional information and the height information of the plurality of points X in the first target area 21 and 22 from the digital elevation model (DEM) of the target area 20, .

For example, the information acquiring unit 112 acquires position information and height information of a plurality of sample points in the object region 20, and then, based on the obtained information, An elevation model can be created. Then, the information obtaining unit 112 may obtain position information and height information of the plurality of points X in the first target area 21, 22 from the digital elevation model.

According to one embodiment, the plurality of points X may be located at the same interval in the first target regions 21 and 22, but may be arranged at different intervals according to the embodiment. In other words, the plurality of points X may be uniformly or non-uniformly distributed in the first target regions 21, 22.

The second target area setting unit 113 determines the vertices of the first target areas 21 and 22 using the position and height information of the plurality of points X and includes the vertices, A second target region different from the target regions 21 and 22 can be set.

The second target area setting unit 113 sets the second target area of the first target area 21 and the second target area 22 of the first target area 21 based on the position and height information of the plurality of points X in the first target area 21, Can be determined.

According to an exemplary embodiment, the second target region setting unit 113 may determine the highest point among the plurality of points X as a vertex.

According to another embodiment, the second target area setting unit 113 may select three or more consecutive points in the order of the horizontal distance between the point X and the reference line R among the plurality of points X, X) and the intersection of the intersection lines 203 and 204 (i.e., the point C where the structure is located). Then, the second target area setting unit 113 sets the center point in the horizontal distance between the point X and the reference line R or the intersection C among the three or more selected points, If it is a high point, the point can be determined as the vertex.

Herein, the reference line R is defined as a line orthogonal to the parallel lines 201 and 202 passing the point C where the structure is located.

According to this embodiment, in the case of a point located at one side of the first target area 21 or 22 with respect to the reference line R or the intersection C, the point R and the intersection point C, The horizontal distance between the reference point R and the reference point R is negative in the first target region 21 or 22 and the point R is located at the other point on the other side about the intersection C, ) Or the horizontal distance between the intersections C may be a positive number.

For example, referring to FIGS. 2 and 3, a point located at one side 211 of the first target region 21, 22 around the reference line R, or a point located at one side of the intersection C The sign of the horizontal distance between the point and the reference line R or the intersection C can be set to minus (-).

A point located on the other side 212 around the reference line R in the first target regions 21 and 22 or a point located on the other side 222 around the intersection C The sign of the horizontal distance between the reference line R or the intersection C can be set to a positive value.

6 is a graph showing the relationship between the horizontal distance between each point X and the reference line R or the intersection C and the height of each point X in accordance with another embodiment of the present invention. Is an exemplary diagram for explaining a process of determining a vertex.

In the embodiment of FIG. 6, a total of 100 points are allocated in the first target area 21 and 22, and it is assumed that a structure is located at a point 51 among 100 points. The points 1 to 50 are located at one side 211 and 221 of the first target region 21 and 22 around the reference line R or the intersection C, Are assumed to be located at the other side (212, 222) centered on the reference line (R) or the intersection (C) within the one target region (21, 22).

According to this embodiment, the second target region setting unit 113 may first calculate the horizontal distance between each point X and the reference line R or the intersection C, respectively. Herein, the horizontal distance between the point X and the reference line R is a horizontal distance between the foot of the waterline where the waterline intersects the reference line R and the point X when the waterline is drawn from the point X to the reference line R, to be. That is, the horizontal distance between the point X and the reference line R means the shortest horizontal distance among the horizontal distances between the point X and the innumerable points on the reference line R. [

The points 1 to 50 are located at one side 211 and 221 with respect to the reference line R or the intersection C so that the distance between the reference line R and the intersection C The sign may be set to negative (-). Since the points 52 to 100 are located on the other side 212 and 222 with respect to the reference line R or the intersection C, the sign of the horizontal distance between the reference line R and the intersection C is positive (+).

The second target area setting unit 113 may then select three or more consecutive points in the horizontal distance between the point X and the reference line R or the intersection C among the plurality of points X. [

For example, referring to FIG. 6, the second target area setting unit 113 sets the horizontal distance between the point X and the reference line R or the intersection C, The three points, points 1, 2, and 3, can be selected in ascending order.

Then, the second target area setting unit 113 sets the second target area in the horizontal direction between the point X and the reference line R or the intersection C, You can determine that point as a vertex. If the number N of the selected points is an odd number, the middle point corresponds to (N + 1) / 2 th point. If the number N of selected points is an even number, Th point or (N / 2) + 1 th point.

For example, referring to FIG. 6, the second target area setting unit 113 sets a point X, a reference line R, or an intersection C among the three selected points (points 1, 2, 3) (Point 2) is compared with the height of the other points (i.e., points 1 and 3) in the order of the horizontal distance between the two points (i.e., point 2) (Points 1, 2, and 3). In Figure 6, the height of point 2 is the lowest of points 1, 2, and 3, so point 2 is not determined as the vertex.

Next, the second target area setting unit 113 sets the horizontal distance between the point X and the reference line R or the intersection C, starting from the second smallest point 2, in ascending order of the horizontal distance Points 2, 3 and 4 can be selected.

Then, the second target area setting unit 113 sets the second target area in the order of the horizontal distance between the point X and the reference line R or the intersection C among the three selected points (points 2, 3, 4) After comparing the height of the second point (i.e. point 3) with the height of the other points (i.e. points 2 and 4), the middle point (point 3) 3, 4). In Figure 6, the height of point 3 is the highest of points 2, 3, and 4, so point 3 can be determined as the vertex.

Thus, the second target area setting unit 113 selects three consecutive points in the order of the horizontal distance between the point X and the reference line R or the intersection C from 100 points, As a result of repeating the process of determining the vertexes after the comparison, after selecting the points 98, 99, and 100, which are the three vertices having the largest horizontal distance, And the vertex determination process can be performed.

According to an embodiment, there may be a plurality of vertices determined from a plurality of points X in the first target area 21, 22. For example, referring to FIG. 6, a vertex can be determined as a vertex from points 2, 3 and 4 that are consecutive in horizontal distance order, and a vertex is defined as a vertex from a vertex 51, 52, And a point 99 can be determined as a vertex from the points 98, 99, and 100 that are consecutive in horizontal distance order.

In this case, according to the embodiment of the present invention, the second target region setting unit 113 may set the plurality of highest points corresponding to the intermediate points obtained from the plurality of points (X) (C) at which the structure is located can be determined as a peak point.

For example, referring to FIG. 6, a point 3, which is the highest point among the points 2, 3, and 4 in the middle in the horizontal distance order, has a horizontal distance from a point 51 at which the structure is located, m, and the point 52, which is the highest point in the horizontal distance from the points 51, 52, and 53, corresponds to the middle distance in the order of horizontal distance from the point 51, 10 m, The second target area setting unit 113 determines that the structure is located out of the points 3, 52, and 99 that are the highest and correspond to the middle point, And the point 52 at which the horizontal distance between the point C and the point C is shortest.

As a result, according to the embodiment of the present invention, the second target region setting unit 113 obtains only one vertex from the first target regions 21 and 22.

Then, the second target region setting unit 113 may set a second target region including the vertices but different from the first target region 21, 22.

The second target region may have a predetermined shape and size. According to one embodiment, the second target area setting unit 113 shapes a polygon having the vertex as a vertex, a sector having the vertex as a center, or a line segment having the vertex as one end, And a region having a size can be set as the second target region.

7 is a diagram showing an example of a second target region 23 set according to an embodiment of the present invention.

The second target region setting unit 113 may set the polygon having the apexes 32 of the first target regions 21 and 22 as apexes as the second target region 23.

For example, as shown in FIG. 7, the second target region setting unit 113 has the apex 31 as a vertex, and the apex angle at the apex is 45 degrees. The second target region 23 may be a triangular region whose both sides have a length that is a horizontal distance between the vertex 32 and the lowest point in the first target region.

According to an embodiment, the second target region 23 may be set to include not only the apexes of the first target regions 21 and 22, but also a point C at which the structure is located.

8 is a diagram illustrating an example of a second target region 24 set according to another embodiment of the present invention.

The second target region setting unit 113 may set a sector having the apex 32 of the first target regions 21 and 22 as the second target region 24.

For example, as shown in FIG. 8, the second target region setting unit 113 is centered on the vertex 32 and has a central angle of 45 degrees, a radius of the vertex 32, A sector region, which is the horizontal distance between the lowest points in the region, can be set as the second target region 24. [

9 is a view showing an example of a second target region 25 set according to another embodiment of the present invention.

The second target region setting unit 113 may set a line segment having the apexes 32 of the first target regions 21 and 22 as one end point as the second target region 25.

For example, as shown in FIG. 9, the second target region setting unit 113 has the vertex 32 as one end point and the length of the vertex 32 and the first target region 21 , 22) can be set as the second target area (25).

7 and 8, the vertex angle and the central angle are set to 45 degrees, but the vertex angle and the central angle are not limited thereto and can be variously set according to the embodiment. In FIGS. 7 to 9, the length of the sides of the triangle, the radius of the sector, and the length of the segment are set to the horizontal distance between the apex 32 and the lowest point in the first target area, Can be variously set.

The inclination calculator 114 may calculate the inclination of a plurality of target points in the second target area 23, 24,

According to an embodiment, the inclination angle calculation unit 114 may calculate the inclination angle from the position and height information of a plurality of points X in the first target areas 21 and 22 by a forward difference method, a backward difference method, The inclination of a plurality of target points in the second target regions 23, 24, and 25 can be calculated using the difference method.

According to another embodiment, the tilt calculator 114 may use a plurality of second target areas 23, 24, and 25 in the second target area 23 using a Neighborhood Method, a Quadratic Surface Method, a Maximum Slope Method, a Maximum Downhill Slope Method, It is possible to calculate the slope of the target point by various methods without being limited thereto.

The windward side inclination calculation unit 115 may calculate the windward side inclination by statistically processing the inclination degrees of a plurality of target points in the second target regions 23,

According to an embodiment of the present invention, the windward side slope calculating unit 115 calculates one of the maximum value, the median value, the average value, and the optimal value of the slopes of the plurality of target points in the second target area 23, 24, And can be determined as the windward side slope.

According to another embodiment of the present invention, instead of calculating the maximum value, the median value, the average value, or the optimal value, the windward side slope calculating unit 115 calculates the maximum value, the median value, The frequency distribution for the slope can be calculated, and the windward side slope can be determined using the frequency distribution. For example, the windward-side slope calculating unit 115 can determine the rank value of the class having the highest frequency in the frequency distribution as the windward-side slope. As another example, the windward side slope calculating unit 115 can determine an average value of the slope of the target point belonging to the class having the highest frequency in the frequency distribution as the windward side slope.

Referring again to FIG. 1, the wind load calculation apparatus 100 may further include a terrain coefficient calculating unit 116 for calculating a terrain coefficient based on the terrain slope.

According to the embodiment of the present invention, the terrain coefficient calculating unit 116 compares the terrain slope with a predetermined reference range, and outputs the terrain coefficient corresponding to the reference range to which the terrestrial side slope belongs, Can be determined by the terrain factor of

For example, the upwind-side slope is set to the terrain coefficient K ₁ If x ₁ is less than, when the upwind side slope is x ₁ over x ₂ is less than the terrain coefficient is set to K _2, the upwind-side slope x ₂ or more When the terrain coefficient is set to K ₃ when the terrain coefficient is less than x ₃ and the terrain coefficient is set to K ₄ when the terrain side tilt is x ₃ or more, the terrain coefficient calculating unit 116 calculates the terrain coefficient And the terrain coefficient of the reference range to which the windward side slope belongs can be determined as the terrain coefficient of the target area 21. [

The wind load calculation device 100 according to the embodiment of the present invention can calculate the wind load applied to the structure based on the wind direction side slope or the topographic coefficient obtained through the above process.

The first target area setting unit 111, the information obtaining unit 112, the second target area setting unit 113, the tilt calculating unit 114, the windward side tilt calculating unit 115, and the terrain coefficient calculating unit 116 may be constituted by a processor for executing a program for calculating the wind load, for example, a CPU. In addition, the program may be stored in the storage unit 12, and the wind load calculation apparatus 100 may execute the program from the storage unit 12 and execute the program.

The wind load calculation apparatus 100 according to an embodiment of the present invention may further include an output unit 14. The output unit 14 may output the calculated value or wind load according to an embodiment of the present invention and provide the output to the user. According to one embodiment, the output unit 14 may include a display for visually displaying predetermined information, for example, an LCD, a PDP.

10 is an exemplary flowchart of a wind load calculation method 300 according to an embodiment of the present invention.

The wind load calculation method 300 is a method performed by the wind load calculation apparatus 100 according to the above-described embodiment of the present invention to calculate a wind load applied to a structure.

10, the wind load calculation method 300 is a method of calculating the wind load calculation method 300 by using parallel lines 201 and 202 spaced apart from each other by a predetermined length L in the object area 20 or intersecting lines Setting the regions 21 and 22 between the first and second target regions 21 and 22 as a first target region S310 and obtaining position and height information for a plurality of points X in the first target regions 21 and 22, Determining a vertex 32 of the first target region 21 or 22 using the position and height information in operation S330; determining whether the vertex 32 is included in the first target region 21, (S340) setting a second target area (23, 24, 25) different from the second target area (21, 22), calculating an inclination of a plurality of target points in the second target area S350), and calculating a windward side slope by statistically processing the slope of the target point (S360).

According to an embodiment of the present invention, the step (S310) of setting the areas 21 and 22 between the parallel lines 201 and 202 or the intersecting lines 203 and 204 in the target area 20 as a first target area, (21) between the parallel lines (201, 202) facing each other in the object area (20) with the point (C) at which the structure is located as the target area have.

According to another embodiment of the present invention, the step (S310) of setting the areas 21 and 22 between the parallel lines 201 and 202 or the intersecting lines 203 and 204 in the target area 20 as a first target area, May comprise setting an area 22 between intersection lines 203 and 204 intersecting at a point C where the structure is located in the object area 20 as the first target area .

The length L between the parallel lines 201 and 202 may be zero or more. The angle θ between the crossing lines 203 and 204 may be 0 or more and 180 ° or less.

According to one embodiment, the step S320 of obtaining the position and height information includes an electronic map for a plurality of points X in the first target area 21, 22 and an electronic map for the first target area 21 And obtaining the position and height information of the plurality of points X from at least one of the survey data obtained by measuring the plurality of points in the plurality of points X,

According to another embodiment, the step S320 of obtaining the position and height information may include interpolation using at least one of an electronic map for the object area 20 and survey data for the object area 20 And obtaining position and height information of the plurality of points (X) in the first target area (21, 22).

According to another embodiment, the step of acquiring the position and height information (S320) may include the step of acquiring the position and height information using at least one of the electronic map for the object area 20 and the measurement data for the object area 20, Generating a numerical elevation model for the region 20 and obtaining position and height information of the plurality of points X in the first target region 21, 22 from the numerical elevation model .

According to an embodiment of the present invention, the step of determining the vertex 32 may include determining the vertex 32 as the highest point among the plurality of points X.

According to another embodiment of the present invention, the determining step S330 of the vertex 32 may include determining a vertex 32 of at least three consecutive points in the horizontal distance between the point X and the reference line R among the plurality of points X, Selecting at least three points that are consecutive in the order of a horizontal distance between a point X and an intersection C and selecting a point X and a reference line R or an intersection C among the three or more selected points, And determining the corresponding point as the vertex 32 when the middle point is the highest point in the order of the horizontal distance between the vertexes. The reference line R is a line orthogonal to the parallel lines 201 and 202 passing the point C where the structure is located.

In this case, in the case of a point located at one side (211, 221) centering on the reference line (R) or the intersection (C) in the first target area (21, 22) The horizontal distance between the intersections C is negative and in the case of a point located at the other side 212 or 222 around the reference line R or the intersection C in the first target area 21 or 22, The horizontal distance between the point and the reference line R or the intersection C may be a positive number.

If the number N of the selected points is an odd number, the middle point corresponds to (N + 1) / 2 th point. If the number N of selected points is an even number, Th point or (N / 2) + 1 th point.

According to an embodiment, the step of determining as the vertex 32 may be performed such that, when the highest point corresponding to the middle obtained from the plurality of points X is a plurality, And determining the point 32 having the shortest horizontal distance from the point C as the vertex 32.

According to an embodiment of the present invention, the step (S340) of setting the second target regions 23, 24 and 25 includes a polygon 23 having the vertex 32 as a vertex, And setting a region having a predetermined size as the second target region in a shape of a sector 24 having a center or a line segment 25 having the apex 32 as an end point.

According to an embodiment of the present invention, the step of calculating the inclination degree of the plurality of target points (S350) may be performed by a finite difference method (XPS) from the position and height information of a plurality of points (X) Calculating a slope of a plurality of target points in the second target area (23, 24, 25) using a forward difference method, a backward difference method, or a center difference method based on the slope of the target area.

According to another embodiment, the step of calculating the inclination degree of the plurality of target points (S350) may be performed by using a Neighborhood Method, a Quadratic Surface Method, a Maximum Slope Method, a Maximum Downhill Slope Method, 23, 24, and 25). However, the present invention is not limited thereto. Various methods may be used to calculate the slope.

According to an embodiment of the present invention, the step of calculating the windward side slope (S360) may include calculating one of a maximum value, a median value, an average value, and a minimum value of the slopes of the plurality of target points to determine the windward side slope . ≪ / RTI >

According to another embodiment of the present invention, the step of calculating the windward side slope (S360) includes the steps of: calculating a frequency distribution of the slope of the plurality of target points; and calculating a frequency distribution Determining the value as the windward side slope or determining an average value of the slope of the target point belonging to the class having the highest frequency in the frequency distribution as the windward side slope.

According to an embodiment of the present invention, the wind load calculation method 300 may further include calculating a terrain factor based on the windward side slope after calculating the windward side slope (S360).

According to an embodiment of the present invention, the step of calculating the terrain factor may include comparing the terrain slope with a predetermined reference range, and comparing the terrain factor corresponding to the reference range to which the terrestrial side slope belongs, (20).

The wind load calculation method 300 according to an embodiment of the present invention may be stored in a computer-readable recording medium that is manufactured as a program to be executed in a computer. The computer-readable recording medium includes all kinds of storage devices in which data that can be read by a computer system is stored. Examples of the computer-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like. In addition, the wind load calculation method 300 according to the above-described embodiment of the present invention may be implemented as a computer program stored in a medium for execution in combination with the computer.

According to the wind load calculation device and method described above, the surrounding terrain as the wind load calculation standard can be determined objectively and quantitatively without being determined by the subjective judgment of the designer. As a result, the wind loads that are reasonably reflected on the wind by the surrounding topography of the structure can be calculated, and the safety and economical efficiency of the structure can be improved.

100: Wind load calculation device
10:
11:
12:
13:
14: Output section
111: first target area setting unit
112: Information obtaining unit
113: second target area setting unit
114:
115: windward side inclination calculation section
116: terrain coefficient calculation unit

Claims (28)

A first target area setting unit for setting an area between a crossing line spaced by a predetermined length in the object area or a crossing line having a predetermined nip angle to a first target area;
An information obtaining unit obtaining position and height information of a plurality of points in the first target area;
Determining a highest point among the plurality of points as a vertex of the first target area using the position and height information and setting a second target area including the vertex as a second target area different from the first target area, An area setting unit;
An inclination angle calculating section for calculating an angle of inclination of a plurality of target points in the second target area; And
A windward side slope calculating unit for statistically processing an inclination of the target point to calculate a windward side slope;
And a wind load calculation device. The method according to claim 1,
Wherein the first target area setting unit comprises:
A region between parallel lines facing each other in the target region is set as the first target region,
And sets an area between intersecting lines intersecting at a point where the structure is located in the target area as the first target area. The method according to claim 1,
The length between the parallel lines being zero or more, or
Wherein the angle between the intersecting lines is 0 to 180 degrees. The method according to claim 1,
Wherein the information obtaining unit comprises:
An electronic map for a plurality of points in the first target area; And
Survey data obtained by surveying a plurality of points in the first target area;
And obtains position and height information of the plurality of points from at least one of the plurality of points. The method according to claim 1,
Wherein the information obtaining unit comprises:
Acquiring position and height information of the plurality of points in the first target area using an interpolation method based on at least one of an electronic map for the target area and survey data for the target area,
Generating a digital elevation model for the target area by using at least one of an electronic map for the target area and survey data for the target area, calculating a position of the plurality of points in the first target area from the digital elevation model And height information. delete A first target area setting unit for setting an area between a crossing line spaced by a predetermined length in the object area or a crossing line having a predetermined nip angle to a first target area;
An information obtaining unit obtaining position and height information of a plurality of points in the first target area;
A second target region setting unit for determining a vertex of the first target region using the position and height information and setting a second target region including the vertex but different from the first target region;
An inclination angle calculating section for calculating an angle of inclination of a plurality of target points in the second target area; And
And a windward side slope calculating unit for statistically processing the slope of the target point to calculate a windward side slope,
Wherein the second target area setting unit comprises:
Selecting at least three successive points in the horizontal distance between the point and the reference line orthogonal to the parallel line passing through the point and the point where the structure is located or selecting the point in the order of the horizontal distance between the point and the intersection of the intersection line Select three or more consecutive points,
And determining the corresponding point as the vertex when the middle point in the horizontal direction between the point and the baseline or the intersection is the highest point among the three or more selected points. delete 8. The method of claim 7,
Wherein the second target area setting unit comprises:
And determines a point at which a horizontal distance between a point at which the structure is located and a point at which the structure is located among the plurality of highest points as the apex when the highest point corresponding to the intermediate point obtained from the plurality of points is a plurality. 8. The method of claim 1 or 7,
Wherein the second target area setting unit comprises:
A polygon having a vertex as a vertex, a sector having a center as the vertex, or a line segment having the vertex as an end point, and setting an area having a predetermined size as the second target area. 8. The method of claim 1 or 7,
Wherein the uphill-side inclination calculator comprises:
Determining one of a maximum value, a median value, an average value, and an optimal value of the slopes of the plurality of target points as the uphill slope,
Calculating a frequency distribution of the gradients of the plurality of target points and determining a rank value of the class having the largest frequency in the frequency distribution as the windward side slope,
Calculates a frequency distribution of the slopes of the plurality of target points and determines an average value of the slopes of the target points belonging to the class having the largest frequency in the frequency distribution as the windward side slope. 8. The method of claim 1 or 7,
And a terrain factor calculating unit for calculating a terrain factor based on the terrain inclination. 13. The method of claim 12,
Wherein the terrain factor calculation unit comprises:
Compares the windward side slope with a preset reference range and determines a topographic coefficient corresponding to a reference range to which the windward side slope belongs as a topographic coefficient of the target area. Setting an area between a crossing line spaced by a predetermined length in the object area or a crossing line having a predefined nip angle as a first target area;
Obtaining position and height information for a plurality of points in the first target area;
Determining the highest point among the plurality of points as the apex of the first target area using the position and height information;
Setting a second target region including the vertices but different from the first target region;
Estimating an inclination of a plurality of target points within the second target area; And
Calculating a windward side slope by statistically processing an inclination of the target point;
To calculate a wind load. 15. The method of claim 14,
Wherein setting an area between the parallel lines or intersecting lines in the object area as a first target area comprises:
Setting an area between parallel lines facing each other in the object area as the first target area with a point at which the structure is located; or
Setting an area between intersecting lines intersecting at a point where the structure is located in the object area as the first target area;
To calculate a wind load. 15. The method of claim 14,
The length between the parallel lines being zero or more, or
Wherein the angle between the intersections is not less than 0 but not more than 180 degrees. 15. The method of claim 14,
The step of obtaining the position and height information comprises:
An electronic map for a plurality of points in the first target area; And
Survey data obtained by surveying a plurality of points in the first target area;
And obtaining position and height information of the plurality of points from at least one of the plurality of points. 15. The method of claim 14,
The step of obtaining the position and height information comprises:
Obtaining position and height information of the plurality of points in the first target area using an interpolation method based on at least one of an electronic map for the target area and survey data for the target area; or
Generating a digital elevation model for the target area by using at least one of an electronic map for the target area and survey data for the target area, calculating a position of the plurality of points in the first target area from the digital elevation model Obtaining height information;
To calculate a wind load. delete Setting an area between a crossing line spaced by a predetermined length in the object area or a crossing line having a predefined nip angle as a first target area;
Obtaining position and height information for a plurality of points in the first target area;
Determining a vertex of the first target area using the position and height information;
Setting a second target region including the vertices but different from the first target region;
Estimating an inclination of a plurality of target points within the second target area; And
And calculating a windward side slope by statistically processing the slope of the target point,
Wherein determining the vertices comprises:
Selecting at least three successive points in the horizontal distance between the point and the reference line orthogonal to the parallel line passing through the point and the point where the structure is located or selecting the point in the order of the horizontal distance between the point and the intersection of the intersection line Selecting at least three consecutive points; And
Determining the vertex as a vertex in the case where a middle point in the horizontal distance between the point and the reference line or the intersection is the highest point among the three or more selected points;
To calculate a wind load. delete 21. The method of claim 20,
The step of determining as a vertex comprises:
Determining a point at which a horizontal distance between a point at which the structure is located and a point at which the structure is located among the plurality of highest points as the vertex when the highest point corresponding to the intermediate point obtained from the plurality of points is a plurality Wind load calculation method. 15. The method of claim 14,
Wherein setting the second target region comprises:
Setting a polygon having a vertex as a vertex, a sector having a center as the vertex, or a line segment having the vertex as an end point, and setting a region having a predetermined size as the second target region Wind load calculation method. 15. The method of claim 14,
The step of calculating the windward side slope includes:
Determining one of a maximum value, a median value, an average value, and an optimal value of the slopes of the plurality of target points as the windward side slope;
Calculating a frequency distribution of the gradient of the plurality of target points and determining a rank value of the class having the largest frequency in the frequency distribution as the windward side slope; or
Calculating a frequency distribution of the slopes of the plurality of target points and determining an average value of the slopes of the target points belonging to a class having the highest frequency in the frequency distribution as the windward side slopes;
To calculate a wind load. 15. The method of claim 14,
Further comprising the step of calculating a terrain coefficient based on the windward side slope after calculating the windward side slope. 26. The method of claim 25,
Wherein the calculating the terrain factor comprises:
Comparing the windward side slope with a predetermined reference range; And
Determining a terrain factor corresponding to a reference range to which the windward side slope belongs as a terrain coefficient of the target area;
To calculate a wind load. A computer-readable recording medium,
A recording medium on which a program for executing a wind load calculation method according to any one of claims 14 to 18, 20, and 22 to 26 is recorded. 26. A computer program stored in a medium for executing a wind load calculation method according to any one of claims 14 to 18, 20, and 22 to 26 in combination with a computer.

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