Intelligent arrangement method and system of exposed brick wall based on CAD drawings

Abstract

The present invention discloses a method and system for intelligent arrangement of a clear brick wall based on CAD drawings. The method collects parameter information of the clear brick wall, divides the clear brick area into several sub-areas by vertical lines, calculates the straight brick mortar joints and the diagonal brick mortar joints of all sub-areas one by one and layer by layer, determines the straight brick and diagonal brick arrangement information in the clear brick area from bottom to top layer by layer, and automatically draws each clear brick in the clear brick area in the drawing using CAD software. The method can intelligently arrange the clear bricks of the entire wall, greatly improving work efficiency; the method comprehensively considers the integration of masonry methods and masonry areas, and can effectively improve the drawing quality; the method can automatically count the number of standard clear bricks and the number and size of non-standard clear bricks, and automatically generate a material preparation table, providing convenience for on-site construction and reducing material waste.

Description

Technical Field

[0001] The invention relates to a method and system for intelligent arrangement of exposed brick walls based on CAD drawings, belonging to the field of intelligent construction of civil engineering. Background Art

[0002] During the construction of historical buildings and new buildings, when the facade presents the effect of the exposed brick wall of a historical building, the construction workers need to draw the layout of the exposed bricks in advance according to the layout rules of the exposed bricks, plan the layout in advance, determine the number and size of the exposed bricks in the wall, and avoid waste of exposed bricks.

[0003] However, in the current construction process, many cases of manual drawing of exposed bricks are required, which requires multiple copying and pasting, calculation of brick modulus, etc., and all the joints need to be redrawn when they do not meet the aesthetic requirements. This will cause the technicians on the project to spend a lot of time, but still not get satisfactory results in the end, resulting in increased rework costs and waste of exposed bricks. Summary of the invention

[0004] In view of the problems of low efficiency and easy rework in the existing drawing of exposed bricks for exposed walls, the present invention provides an intelligent arrangement method and system for exposed brick walls based on CAD drawings, which can automatically draw the arrangement of exposed bricks for the entire wall according to different masonry methods of the exposed wall, provide construction personnel with accurate arrangement diagrams and lists of bricks of various sizes, and greatly improve drawing efficiency.

[0005] In order to solve the above technical problems, the present invention includes the following technical solutions:

[0006] A method for intelligent arrangement of exposed brick walls based on CAD drawings, comprising the following steps:

[0007] Step 1: Obtain parameter information of the exposed brick wall, including the outer contour of the exposed brick area and the area within the outer contour where exposed bricks are not required to be arranged; obtain the standard brick size of exposed bricks and determine the mortar joint width; determine the arrangement method of exposed bricks;

[0008] Step 2: Use vertical lines to divide the exposed bricks into several sub-areas;

[0009] Step 3: Calculate the mortar joints of the straight bricks and the mortar joints of the flat bricks one by one and layer by layer for all sub-areas; specifically: for the same layer of straight bricks, set the starting bricks at the edges of the left and right sides of the sub-area, set the mortar joints on the opposite sides of the starting bricks, and the center distance of the mortar joints of the starting bricks is recorded as L ; Lay standard bricks from the starting bricks on the left and right sides to the middle, according to the center distance of the starting brick mortar joints L , Standard brick length La Width of mortar joint b, determine the number of standard straight bricks between the starting bricks, the number and size of non-standard straight bricks, and determine the mortar joints of the straight bricks; determine the mortar joints of the side bricks based on the mortar joints of the straight bricks, divide the mortar joint center distance on both sides of the straight bricks into four equal parts, and the equal division points are A, B, and C in sequence, and A and C are the mortar joint center positions of the side bricks respectively;

[0010] Step 4: According to the positions of the mortar joints of the parallel bricks and the mortar joints of the diagonal bricks, the arrangement information of the parallel bricks and the diagonal bricks in the clear brick area is determined layer by layer from bottom to top;

[0011] Step 5: Based on the arrangement information of the straight bricks and diagonal bricks calculated in step 3, use CAD software to automatically draw each clear brick in the clear brick area in the drawing.

[0012] Furthermore, the bottom bricks are straight bricks. When setting the starting bricks, if the starting bricks are located at the corners or outside the edge of the door and window openings, the length of the starting bricks is set to 0.75 La ; If the starting brick is located inside the edge of the door and window opening, the length of the starting brick is set to 0.25 La .

[0013] Furthermore, the following method is used to calculate the number of standard bricks and non-standard bricks in the sub-area:

[0014] Will L Divide by ( La + d ), the integer part of the result is n , the remainder is y ;

[0015] like y =0, the number of non-standard bricks is 0, and the number of standard bricks is n ;

[0016] If 0< y ≤0.25 La When the number of non-standard bricks is 4, the length of each non-standard brick is [3×( La + d )+ y ] / 4; the number of standard straight bricks is n -3;

[0017] When 0.25 La < y ≤0.5 La When the number of non-standard bricks is 3, the length of each non-standard brick is [2×( La + d )+ y ] / 3; the number of standard straight bricks is n -2;

[0018] When 0.5 La <y≤0.75La When the number of non-standard bricks is 2, the length of each non-standard brick is [( La + d )+ y ] / 2; the number of standard straight bricks is n -1;

[0019] When y>0.75 La When the number of non-standard bricks is 1, the length of each non-standard brick is y , the number of standard straight bricks is n .

[0020] Accordingly, the present invention also provides a system for intelligent arrangement of exposed brick walls based on CAD drawings, including a drawing information acquisition module, an area division module, an area mortar joint arrangement module, an exposed brick arrangement module and a CAD drawing drawing module;

[0021] The drawing information acquisition module is used to obtain the parameter information needed to draw the exposed brick wall, including the outer contour of the exposed brick area and the area within the outer contour where exposed bricks are not required; obtain the standard brick size of exposed bricks, determine the mortar joint width; and determine the arrangement method of exposed bricks;

[0022] The area division module uses vertical lines to divide the exposed brick area into several sub-areas;

[0023] The mortar joint arrangement module in the area is based on the standard brick length of the exposed brick La , mortar joint width d , the length of the sub-area and the length of the starting brick of the sub-area, determine the position of the bricks and the layout position of the mortar joints of each layer in each sub-area, and obtain the position of the mortar joints of the bricks in the outer contour of the clear brick area; and determine the position of the mortar joints of the Ding bricks in each layer through the position of the mortar joints of the bricks;

[0024] The exposed brick arrangement module determines the arrangement and size of exposed bricks layer by layer from bottom to top according to the positions of the parallel brick joints and the diagonal brick joints.

[0025] The CAD drawing module draws each clear water brick in the drawing based on the layout information of each clear water brick calculated by the clear water brick layout module, and inserts the clear water brick statistics table into the drawing to form a complete clear water brick layout diagram.

[0026] Furthermore, the mortar joint arrangement module in the area calculates the number of standard straight bricks and the number of non-standard straight bricks between the starting bricks in the sub-area in the following manner:

[0027] Will L Divide by ( La + d ), the integer part of the result is n , the remainder is y ,L The center distance of the starting brick mortar joint;

[0028] like y =0, the number of non-standard bricks is 0, and the number of standard bricks is n ;

[0029] If 0< y ≤0.25 La When the number of non-standard bricks is 4, the length of each non-standard brick is [3×( La + d )+ y ] / 4; the number of standard straight bricks is n -3;

[0030] When 0.25 La < y ≤0.5 La When the number of non-standard bricks is 3, the length of each non-standard brick is [2×( La + d )+ y ] / 3; the number of standard straight bricks is n -2;

[0031] When 0.5 La <y≤0.75 La When the number of non-standard bricks is 2, the length of each non-standard brick is [( La + d )+ y ] / 2; the number of standard straight bricks is n -1;

[0032] When y>0.75 La When the number of non-standard bricks is 1, the length of each non-standard brick is y , the number of standard straight bricks is n .

[0033] Furthermore, when the clear water brick arrangement module arranges the clear water bricks, if the outer contour of the clear water bricks is inconsistent with the vertical line, the clear water bricks are arranged first, and then the clear water brick area is intersected with the arranged clear water bricks to remove the clear water bricks outside the outer contour.

[0034] Due to the adoption of the above technical scheme, the present invention has the following advantages and positive effects compared with the prior art: the present invention provides an intelligent arrangement method for clear water brick walls based on CAD drawings, collects parameter information of clear water brick walls, divides the clear water brick area into several sub-areas by vertical lines, calculates the straight brick joints and the corner brick joints of clear water bricks one by one and layer by layer for all sub-areas, determines the arrangement information of straight bricks and corner bricks in the clear water brick area layer by layer from bottom to top, and automatically draws each clear water brick in the clear water brick area in the drawings using CAD software. This method can intelligently arrange the clear water bricks of the entire wall, and can complete the normal manual brick arrangement work of one day in half a minute, greatly improving work efficiency; this method comprehensively considers the integration of masonry methods and masonry areas, and can effectively improve the drawing quality; this method can automatically count the number of standard clear water bricks and the number and size of non-standard clear water bricks, and automatically generate a material preparation table, which provides convenience for on-site construction and reduces material waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a flow chart of a method for intelligent arrangement of exposed brick walls based on CAD drawings in one embodiment of the present invention;

[0036] Figure 2 It is a schematic diagram of dividing the exposed brick area into 13 sub-areas in one embodiment of the present invention;

[0037] Figure 3 A schematic diagram of determining the mortar joint of a brick in one embodiment of the present invention;

[0038] Figure 4 This is a layout diagram of the clear bricks in one embodiment of the present invention;

[0039] Figure 5 It is a partial schematic diagram of the arrangement diagram of the plain bricks in one embodiment of the present invention;

[0040] Figure 6 This is a schematic diagram of an arrangement of three horizontal and one vertical bricks in one embodiment of the present invention.

[0041] The numbers in the figure are as follows:

[0042] 1-outer contour line; 2-door opening; 3-window opening; 4-vertical line; 5-straight brick; 6-side brick. DETAILED DESCRIPTION

[0043] The following is a further detailed description of the method and system for intelligent arrangement of exposed brick walls based on CAD drawings provided by the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer in conjunction with the following description. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0044] Embodiment 1

[0045] like Figure 1 As shown, this embodiment provides a method for intelligently arranging a plain brick wall based on a CAD drawing, and uses CAD secondary development software to automatically draw plain bricks. Figures 1 to 5 As shown, the specific steps include:

[0046] Step 1: Obtain the parameter information of the exposed brick wall, including the outer contour 1 of the exposed brick area and the area within the outer contour 1 where exposed bricks do not need to be arranged; obtain the standard brick size of exposed bricks, determine the mortar joint width; and determine the arrangement of exposed bricks. The outer contour is recorded in the form of a polygon, and the position information with special joint requirements is recorded in the form of a straight line. The collected outer contour line needs to be proportionally processed so that the proportion of the outer contour line is consistent with that of the standard exposed brick.

[0047] The arrangement of exposed bricks includes one straight brick and one short brick, three straight bricks and one short brick, all straight bricks, all short bricks, plum blossom short bricks, etc. Straight bricks are bricks with their long sides parallel to the wall surface, and short bricks are bricks with their long sides perpendicular to the wall surface. For example, one straight brick and one short brick refers to a masonry method in which one layer of straight bricks and one layer of short bricks are arranged alternately and repeatedly.

[0048] Step 2: Use vertical lines 4 to divide the clear brick area into several sub-areas. When using vertical lines 4 to divide the clear brick area into several sub-areas, divide the clear brick area into different sub-areas along the vertical direction according to the position information with special joint requirements. After setting the horizontal position of the mortar joint in each sub-area, the position of the clear brick mortar joint of the entire wall can be obtained. Positions with special joint requirements include door openings 2, window openings 3, wall corners, etc. The vertical lines are set along the edges of door openings 2, window openings 3, and wall corners.

[0049] Step 3: Calculate the number of standard exposed bricks and the size and quantity of non-standard bricks for all sub-areas layer by layer, and summarize and output the exposed brick list; Figures 1 to 3 As shown, the calculation process for each sub-region includes:

[0050] A1. For the same skin brick 5, set the starting bricks at the edges of the left and right sides of the sub-area, set the mortar joints on the opposite sides of the starting bricks, and the center distance of the mortar joints of the starting bricks is recorded as L ;

[0051] A2. Lay standard bricks from the starting bricks on the left and right sides to the middle, according to the center distance of the starting brick mortar joints. L , Standard brick length La Width of mortar joint b , determine the number of standard bricks between the starting bricks, the number and size of non-standard bricks, and determine the mortar joints of the bricks;

[0052] A3. For the same leather Ding brick 6, the center distance of the gray seam on both sides of each brick along the determined in step A2 is divided into four equal parts, and the equal points are A, B, and C, respectively. A and C are the center positions of the gray seams of Ding bricks; it can be seen that the gray seams of Ding bricks are determined by the straight bricks, and the Ding bricks at the corresponding positions of the non-standard straight bricks are also non-standard;

[0053] Step 4: According to the positions of the mortar joints of the straight bricks and the mortar joints of the diagonal bricks, determine the arrangement information of the straight bricks and diagonal bricks in the clear brick area layer by layer from bottom to top. According to whether the length of each clear brick is equal to the length of the standard brick, determine whether it is a standard brick, and count the number of clear bricks of various sizes to form a size and quantity statistical table including standard clear bricks and non-standard bricks of different lengths, as shown in Table 1.

[0054] Step 5: Based on the arrangement information of the exposed bricks calculated in step 3, use CAD software to automatically draw each exposed brick in the drawing.

[0055] Table 1 Statistics of size and quantity of exposed bricks

[0056]

[0057] When the bottom bricks are straight bricks, when setting the starting bricks, if the starting bricks are located at the corners or outside the edge of the door and window openings, the length of the starting bricks is set to 0.75 La ; If the starting brick is located inside the edge of the door and window opening, the length of the starting brick is set to 0.25 La .for example Figure 2 The right starting bricks of the first, fifth, and eleventh sub-areas are all located outside the edge of the window opening, and the length of the starting brick is set to 0.75 La The starting bricks on both sides of the second, sixth, and twelfth sub-areas are located inside the edge of the window opening, and the length of the starting bricks is set to 0.25 La The starting bricks on the left side of the first sub-area and the starting bricks on the right side of the thirteenth sub-area are both located at the corners, and the length of the starting bricks is set to 0.75 La Such a setting can ensure that the connecting part between the first sub-area and the second sub-area is a whole brick, and the number of non-standard bricks is minimized.

[0058] The following method is used to calculate the number of non-standard bricks in a sub-area:

[0059] Will L Divide by ( La + d ), the integer part of the result is n , the remainder is y ;

[0060] like y =0, the number of non-standard bricks is 0, and the number of standard bricks isn ;

[0061] If 0< y ≤0.25 La When the number of non-standard bricks is 4, the length of each non-standard brick is [3×( La + d )+ y ] / 4; the number of standard straight bricks is n -3;

[0062] When 0.25 La < y ≤0.5 La When the number of non-standard bricks is 3, the length of each non-standard brick is [2×( La + d )+ y ] / 3; the number of standard straight bricks is n -2;

[0063] When 0.5 La <y≤0.75 La When the number of non-standard bricks is 2, the length of each non-standard brick is [( La + d )+ y ] / 2; the number of standard straight bricks is n -1;

[0064] When y>0.75 La When the number of non-standard bricks is 1, the length of each non-standard brick is y , the number of standard straight bricks is n .

[0065] like Figure 5 As shown, when the outer contour area of ​​the clear water brick is not a regular rectangle, there will be a situation that there is an area outside the outer contour line of the clear water brick area between the two vertical lines of the sub-area. Clear water bricks should not be laid out in this part, but the layout of clear water bricks is based on the starting bricks determined by the vertical lines, and then the clear water bricks are determined. Therefore, it is necessary to process the part outside the outer contour. Specifically, the intersection of the clear water brick area and the laid clear water bricks can be taken, and the clear water bricks outside the outer contour can be removed. The intersection operation can be completed using a computer graphics algorithm.

[0066] It should be noted that Figures 4 to 6 The bricks with green lines in the figure represent non-standard bricks, and the bricks with black lines represent standard bricks. Figure 4 , Figure 5 The displayed clear water bricks are arranged in a one-by-one manner. Figure 6The displayed arrangement of exposed bricks adopts the method of three straight and one short. The following is a brief introduction to the method of three straight and one short. The first layer of straight bricks and the third layer of straight bricks in the three straight and one short are the same as the straight bricks in the one straight and one short in terms of the setting of the starting bricks and the setting of the straight brick mortar joints. The method of determining the short brick mortar joints is also the same. The difference is that the length of the starting brick of the second layer of straight bricks in the three straight and one short is different. For example, 0.75 La Change to 0.25 La The determination of the position of the mortar joint of the Ding brick is based on the mortar joint of the adjacent skin. Of course, on the basis of this embodiment, the mortar joint position when the full-straight and full-Ding arrangement can also be obtained by adjusting the length of the starting brick, which will not be repeated here.

[0067] Embodiment 2

[0068] The present embodiment provides a system for intelligent arrangement of exposed brick walls based on CAD drawings, including a drawing information acquisition module, an area division module, an area mortar joint arrangement module, an exposed brick arrangement module and a CAD drawing drawing module.

[0069] The drawing information acquisition module is used to obtain the parameter information needed to draw the exposed brick wall, including the outer contour of the exposed brick area, the area within the outer contour where exposed bricks do not need to be arranged; obtain the standard brick size of exposed bricks, determine the mortar joint width; and determine the arrangement of exposed bricks. The drawing information acquisition module can obtain the above information by identifying the graphic data and text data of the drawing. Areas within the outer contour where exposed bricks do not need to be arranged include door and window openings, mechanical and electrical openings, etc.

[0070] The area division module uses vertical lines to divide the exposed brick area into several sub-areas. The division can be performed according to the location information with special joint requirements. The locations with special joint requirements include door openings, window openings, mechanical and electrical openings, wall corners, etc. The vertical lines are set along the edges of door openings, window openings, mechanical and electrical openings, and wall corners.

[0071] The mortar joint arrangement module in the area is based on the standard brick length of the exposed brick La , mortar joint width d , area length and the starting brick length of the area, determine the layout position of the mortar joints of each layer of the bricks in the area, and determine the layout position of the mortar joints of the diagonal bricks according to the position of the mortar joints of the bricks. For the sub-area, after determining the starting brick, according to the center distance of the mortar joints of the starting bricks L , Standard brick length La , mortar joint width d, the number of standard straight bricks, the size and number of non-standard straight bricks can be determined. The determination method can refer to Example 1, and then the mortar joints are arranged from both ends to the middle. After the number and position of straight bricks are determined, the mortar joints of the ding bricks can be determined accordingly. The specific determination method is: divide the mortar joint center distance on both sides of each straight brick into four equal parts, and the equal division points are A, B, and C respectively. A and C are the mortar joint center positions of the ding bricks, thereby determining the number of standard ding bricks and the size and number of non-standard bricks. The ding bricks at the corresponding positions above and below the non-standard straight bricks are also non-standard. The mortar joint arrangement module in the area first traverses the straight bricks in each sub-area, splices the adjacent starting bricks in adjacent sub-areas to form a complete starting brick, and after all the mortar joints of the straight bricks are determined, the mortar joints of the ding bricks are determined.

[0072] The exposed brick arrangement module determines the arrangement and size of exposed bricks from bottom to top according to the positions of the mortar joints of the exposed bricks and the mortar joints of the mortar joints of the exposed bricks. For example, when using the arrangement method of one exposed brick and one mortar joint, the exposed bricks are arranged from the bottom of the outer contour of the exposed brick area upward in the form of one layer of exposed bricks and one layer of mortar joints. When considering the situation at the junction of the four walls, the bottom layer of bricks in the north-south direction can be set as exposed bricks, and the bottom layer of bricks in the east-west direction can be set as mortar joints, so that the corners can just meet the requirements of convenient construction. According to the horizontal position of the mortar joints and the vertical range of each layer of bricks, the arrangement position and size of each brick are determined, and each brick corresponds to a rectangle. When the outer contour area of ​​the clear water brick is not a regular rectangle, there will be a situation that there is an area outside the outer contour line of the clear water brick area between the two vertical lines of the sub-area. This part should not be laid with clear water bricks, but the layout of the clear water bricks is determined by the starting bricks determined by the vertical lines, and then the clear water bricks are determined. Therefore, it is necessary to process the part outside the outer contour. Specifically, the clear water brick area and the laid clear water bricks can be used to take the intersection, and the clear water bricks outside the outer contour can be removed. The intersection operation can be completed using computer graphics algorithms. Traverse all sub-areas to obtain the arrangement information of the clear water bricks in the entire clear water wall. The information of each clear water brick can be represented by an array composed of the vertex coordinates of its contour polyline. According to the length information of each clear water brick, according to whether its length is equal to the standard brick, it is judged whether it is a standard brick. The number of clear water bricks of various sizes is counted to form a size statistics table containing standard clear water bricks and non-standard bricks of different lengths.

[0073] The CAD drawing module draws each clear water brick in the drawing based on the layout information of each clear water brick calculated by the clear water brick layout module, and inserts the clear water brick statistics table into the drawing to form a complete clear water brick layout diagram.

[0074] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A method for intelligent arrangement of exposed brick walls based on CAD drawings, characterized in that: The steps include: Step 1: Obtain parameter information of the exposed brick wall, including the outer contour of the exposed brick area and the area within the outer contour where exposed bricks are not required to be arranged; obtain the standard brick size of exposed bricks and determine the mortar joint width; determine the arrangement method of exposed bricks; Step 2: Use vertical lines to divide the exposed bricks into several sub-areas; Step 3: Calculate the mortar joints of the straight bricks and the mortar joints of the flat bricks one by one and layer by layer for all sub-areas; specifically: for the same layer of straight bricks, set the starting bricks at the edges of the left and right sides of the sub-area, set the mortar joints on the opposite sides of the starting bricks, and the center distance of the mortar joints of the starting bricks is recorded as L ; Lay standard bricks from the starting bricks on the left and right sides to the middle, according to the center distance of the starting brick mortar joints L , Standard brick length La Width of mortar joint b , determine the number of standard straight bricks between the starting bricks, the number and size of non-standard straight bricks, and determine the mortar joints of the straight bricks; determine the mortar joints of the side bricks based on the mortar joints of the straight bricks, divide the mortar joint center distance on both sides of the straight bricks into four equal parts, and the equal division points are A, B, and C in sequence, and A and C are the mortar joint center positions of the side bricks respectively; Step 4: According to the positions of the mortar joints of the parallel bricks and the mortar joints of the diagonal bricks, the arrangement information of the parallel bricks and the diagonal bricks in the clear brick area is determined layer by layer from bottom to top; Step 5: According to the arrangement information of the straight bricks and the diagonal bricks calculated in step 3, each clear brick in the clear brick area is automatically drawn in the drawing using CAD software; The following method is used to determine the number of standard bricks and non-standard bricks between the starting bricks: Will L Divide by ( La + d ), the integer part of the result is n , the remainder is y ; like y =0, the number of non-standard bricks is 0, and the number of standard bricks is n ; If 0< y ≤0.25 La When the number of non-standard bricks is 4, the length of each non-standard brick is [3×( La + d )+ y ] / 4; the number of standard straight bricks is n -3; When 0.25 La < y ≤0.5 La When the number of non-standard bricks is 3, the length of each non-standard brick is [2×( La + d )+ y ] / 3; the number of standard straight bricks is n -2; When 0.5 La <y≤0.75 La When the number of non-standard bricks is 2, the length of each non-standard brick is [( La + d )+ y ] / 2; the number of standard straight bricks is n -1; When y>0.75 La When the number of non-standard bricks is 1, the length of each non-standard brick is y , the number of standard straight bricks is n .

2. The method for intelligent arrangement of exposed brick walls based on CAD drawings as claimed in claim 1, characterized in that: The bottom layer of bricks is straight bricks. When setting the starting bricks, if the starting bricks are located at the corners or outside the edge of the door and window openings, the length of the starting bricks is set to 0.75 La ; If the starting brick is located inside the edge of the door and window opening, the length of the starting brick is set to 0.25 La .

3. An intelligent arrangement system for exposed brick walls based on CAD drawings, characterized in that: It includes drawing information acquisition module, area division module, mortar joint arrangement module within the area, plain brick arrangement module and CAD drawing drawing module; The drawing information acquisition module is used to obtain the parameter information needed to draw the exposed brick wall, including the outer contour of the exposed brick area and the area within the outer contour where exposed bricks are not required; obtain the standard brick size of exposed bricks, determine the mortar joint width; and determine the arrangement method of exposed bricks; The area division module uses vertical lines to divide the exposed brick area into several sub-areas; The mortar joint arrangement module in the area is based on the standard brick length of the exposed brick La , mortar joint width d , the length of the sub-area and the length of the starting brick of the sub-area, determine the position of the bricks and the layout position of the mortar joints of each layer in each sub-area, and obtain the position of the mortar joints of the bricks in the outer contour of the clear brick area; and determine the position of the mortar joints of the Ding bricks in each layer through the position of the mortar joints of the bricks; The exposed brick arrangement module determines the arrangement and size of exposed bricks layer by layer from bottom to top according to the positions of the parallel brick joints and the diagonal brick joints. The CAD drawing module draws each clear water brick in the drawing according to the arrangement information of each clear water brick calculated by the clear water brick arrangement module, and inserts the clear water brick statistical table into the drawing to form a complete clear water brick arrangement diagram; The mortar joint arrangement module in the area calculates the number of standard straight bricks and non-standard straight bricks between the starting bricks in the sub-area in the following way: Will L Divide by ( La + d ), the integer part of the result is n , the remainder is y , L The center distance of the starting brick mortar joint; like y =0, the number of non-standard bricks is 0, and the number of standard bricks is n ; If 0< y ≤0.25 La When the number of non-standard bricks is 4, the length of each non-standard brick is [3×( La + d )+ y ] / 4; the number of standard straight bricks is n -3; When 0.25 La < y ≤0.5 La When the number of non-standard bricks is 3, the length of each non-standard brick is [2×( La + d )+ y ] / 3; the number of standard straight bricks is n -2; When 0.5 La <y≤0.75 La When the number of non-standard bricks is 2, the length of each non-standard brick is [( La + d )+ y ] / 2; the number of standard straight bricks is n -1; When y>0.75 La When the number of non-standard bricks is 1, the length of each non-standard brick is y , the number of standard straight bricks is n .

4. The CAD drawing-based intelligent arrangement system for exposed brick walls as claimed in claim 3, characterized in that: When the exposed brick arrangement module arranges exposed bricks, if the outer contour of the exposed bricks is inconsistent with the vertical line, the exposed bricks are arranged first, and then the exposed brick area is intersected with the arranged exposed bricks to remove the exposed bricks outside the outer contour.

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