BIM-based roof slope drawing deepening design method

Abstract

The application discloses a BIM-based roof slope drawing deepening design method, specifically comprising the following steps: judging whether the downspout position needs to be adjusted according to the original design drawing, determining the final downspout position, setting a horizontal slope zone and a vertical slope zone perpendicular to the horizontal slope zone according to the final downspout position, finally making the two slope zones intersect at the final downspout, re-finding the slope of the set horizontal and vertical slope zones, and determining the roof watershed through the final downspout position, so that the roof rainwater on both sides of the watershed is drained to the slope zone through the slope, then drained to the final downspout through the slope zone, and finally drained to the outside through a pipeline, thereby completing the roof slope drawing deepening design. The application breaks through the limitation that the roof cannot be paved with large-size ceramic tiles, and the design of the slope zone avoids the water accumulation at the downspout, improves the construction quality and construction efficiency, and effectively reduces the cost input.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of building construction and relates to a roof slope drawing deepening design method based on BIM. BACKGROUND

[0002] With the rapid development of the real estate industry and the continuous standardization of relevant policies, the future development of the construction industry is obviously differentiated, and with the increasingly fierce market competition in the construction industry, construction enterprises are facing great survival and development pressure, and enterprises will develop or retreat.

[0003] At present, market competition is increasingly fierce, and building engineering has shown diversified development, and the traditional building engineering roof slope design still adopts a fan-shaped slope drawing, which will lead to the fact that the roof cannot be tiled with large ceramic tiles, and cannot meet the diversified development of enterprises, and the fact that water appears at the roof downspout, the roof appears board ridge phenomenon and other adverse factors, the water appearing at the roof downspout is mainly because the water flows along the fan-shaped line, and the downspout is flat, so that the water flow to the downspout area will cause the water phenomenon, and the board ridge phenomenon is mainly that the roof is found according to the fan-shaped slope line after the slope, and a slight corner appears at the slope line, but the ceramic tile is flat, especially the large size ceramic tile is very unfavorable for tiling. The above phenomenon will cause a large amount of rework in the later period, seriously affecting the construction quality and efficiency, and increasing the cost input. SUMMARY

[0004] The purpose of the present application is to provide a roof slope drawing deepening design method based on BIM, which solves the design defects of the traditional roof slope drawing and avoids the problem of water storage at the roof downspout.

[0005] The technical solution adopted by the present application is a roof slope drawing deepening design method based on BIM, specifically, whether the downspout position needs to be adjusted is judged according to the downspout position of the original design drawing, the final downspout position is determined, a horizontal slope zone and a vertical slope zone perpendicular to the horizontal slope zone are set according to the final downspout position, the two slope zones finally intersect at the final downspout, the horizontal and vertical slope zones are re-sloped, the roof divide is determined through the final downspout position, the roof rainwater on both sides of the divide is drained to the slope zone through the slope, and then drained to the final downspout through the slope zone, and finally drained to the outside through the pipeline, thereby completing the roof slope drawing deepening design.

[0006] The present application is characterized in that,

[0007] The re-sloping refers to the slope from the final downspout to the end of the downspout away from the downspout along the horizontal slope zone and the vertical slope zone.

[0008] The conditions that the final downspout position should meet are that the slope zone is connected with the corresponding downspout, and the slope zone can effectively drain the roof rainwater into the downspout; if there is an obstacle to block the drainage, the downspout position is adjusted, so that the slope zone can avoid the obstacle, and finally ensure that the slope zone can effectively drain the roof rainwater into the downspout.

[0009] If the downspout position does not need to be adjusted, the downspout position in the original design drawing is taken as the final downspout position; if the downspout position needs to be adjusted, the final downspout is connected with the pipeline of the downspout position in the original design drawing through a buried pipe, and the downspout in the original design drawing is filled.

[0010] The width of the slope zone at the final downspout is the same as the tile molding width of the final downspout.

[0011] The size of the slope zone is determined according to the size of the tile laid on the roof.

[0012] The width of the slope zone is b, then

[0013] b = nx + (n-1)s

[0014] Wherein, n is the number of tiles laid in the width direction of the slope zone, x is the side length of the tile laid in the width direction of the slope zone, and s is the mortar joint width between adjacent two tiles in the width direction of the slope zone.

[0015] After the width and position of the slope zone are determined, the position of the watershed is determined.

[0016] The determination of the position of the watershed is specifically that the farthest distance of the two final downspouts is calculated according to the positions of the two final downspouts at the ends of the roof, and the position of the watershed is located at half of the farthest distance.

[0017] The watershed is the highest position of the roof, so that the roof rainwater is drained from the highest point through the slope to the slope zone, and finally into the final downspout.

[0018] The beneficial effects of the present application are:

[0019] The BIM-based roof slope graph deepening design method of the present application re-finds the slope on the original design drawing through the slope zone to deepen the design, and the face slope is solved. The design defects of the traditional roof fan-shaped slope graph are avoided, and the original fan-shaped slope line is avoided. The phenomenon of ridge and downspout is avoided, and the phenomenon of water storage at the downspout is avoided. Finally, according to the roof slope graph after deepening the design, the roof can be paved with any size tile and without ridge phenomenon, and the problems of water storage at the downspout are effectively solved. The construction of the related processes of the roof in the later period is facilitated, and the construction cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1is the original design of the roof slope graph (two houses in one roof) of Example 1;

[0021] Figure 2 is the slope graph of the BIM-based roof slope graph deepening design of the application of Example 1 (two houses in one roof).

[0022] In the figure, 1. original downspout, 2. final downspout, 3. slope belt. DETAILED DESCRIPTION

[0023] The application will be described in detail below in combination with the drawings and specific embodiments.

[0024] The BIM-based roof slope graph deepening design method is implemented according to the following steps:

[0025] Step 1, according to the original design drawing downspout position to judge whether the downspout position needs to be adjusted, determine the final downspout position;

[0026] The conditions that the final downspout position should meet are: the slope belt and its corresponding downspout are connected through, ensuring that the slope belt can effectively drain the roof rainwater into the downspout; if there is an obstruction to block the drainage, adjust the downspout position, so that the slope belt avoids the obstruction, and finally ensures that the slope belt can effectively drain the roof rainwater into the downspout.

[0027] If the downspout position does not need to be adjusted, the downspout position in the original design drawing is taken as the final downspout position; if the downspout position needs to be adjusted, the final downspout is connected with the downspout position in the original design drawing through a buried pipe, and the downspout in the original design drawing is filled.

[0028] Step 2, according to the final downspout position, set a horizontal slope belt and a vertical slope belt perpendicular to the horizontal slope belt, finally make the two slope belts intersect at the final downspout, and re-slope the set horizontal and vertical slope belts, which means to slope from the final downspout along the horizontal and vertical slope belts to the end far away from the downspout.

[0029] The size of the slope belt is determined according to the size of the tiles laid on the roof.

[0030] The width of the slope belt is b, then

[0031] b=nx+(n-1)s

[0032] Wherein, n is the number of tiles laid in the width direction of the slope belt, x is the side length of the tile laid in the width direction of the slope belt, and s is the width of the joint between the adjacent two tiles in the width direction of the slope belt.

[0033] The width of the sloping strip at the final drain outlet is the same as the width of the tile molding at the final drain outlet, which allows rainwater to be better drained into the drain outlet through the tiles.

[0034] Step 3: After determining the width and location of the slope, determine the roof watershed by the location of the final drain outlet. The rainwater on both sides of the watershed is then discharged into the slope through the slope, then into the final drain outlet, and finally discharged to the outside through pipes, thus completing the detailed design of the roof slope.

[0035] The watershed location is determined by calculating the farthest distance between the two final drain outlets based on their positions at both ends of the roof. The watershed location is located at half of this farthest distance.

[0036] The watershed is the highest point of the roof, allowing rainwater to flow from the highest point through the slope into the sloping zone, and finally into the final drain.

[0037] Example 1

[0038] This embodiment provides a BIM-based method for detailed design of roof slope diagrams, which is implemented according to the following steps:

[0039] Step 1: Determine whether the position of the drain outlet 1 needs to be adjusted based on the original design drawings, and determine the final position of the drain outlet 2.

[0040] like Figure 1 The original design drawings are shown. In this embodiment, the original drain outlet 1 on the left side is blocked by the roof equipment foundation and retaining wall. Therefore, the drain outlet position needs to be adjusted so that the two horizontal and vertical slopes 3 are connected to the intersecting drain outlet. In this embodiment, the drain outlet should be adjusted horizontally to the right to avoid the equipment foundation and retaining wall. In this embodiment, the original drain outlet 1 on the right side is not blocked by the surrounding area, so the drain outlet position does not need to be adjusted. The slope 3 is set at the original drain outlet position.

[0041] Step 2, as follows Figure 2 As shown, a horizontal slope is set according to the position of the final drain outlet 2, and a vertical slope 3 is set perpendicular to the horizontal slope. Finally, the two slopes 3 intersect at the final drain outlet. The horizontal and vertical slopes 3 are re-sloped. Re-sloped means that from the final drain outlet 2, the slopes are set along the horizontal slope 3 and the vertical slope 3 respectively to the end away from the drain outlet.

[0042] The dimensions of the sloping strip 3 are determined based on the size of the roof tiles. The roof tiles are 100mm x 100mm, and the mortar joint width between adjacent tiles in the width direction of the sloping strip is 10mm.

[0043] The starting bandwidth is b.

[0044] b = nx + (n-1)s = 540mm

[0045] Where n is the number of tiles laid in the width direction of the slope, x is the side length of the tile laid in the width direction of the slope, and s is the mortar joint width between two adjacent tiles in the width direction of the slope.

[0046] The width of the slope at the final drain outlet 2 is the same as the width of the tile molding of the final drain outlet 2, so that rainwater can be better discharged through the tiles into the final drain outlet 2;

[0047] Step 3, as follows Figure 2 As shown, after determining the width and location of the sloping zone 3, the location of the watershed is then determined. The farthest distance between the two final drain outlets is calculated based on the locations of the two final drain outlets at both ends of the roof. The location of the watershed is half of the farthest distance. The location of the watershed can be adjusted appropriately, but the adjustment value should not be too large. It is necessary to ensure that there is no misalignment at the highest point of the sloping zone on both sides, which would affect the slope and direction.

[0048] The watershed is the highest point of the roof, which allows rainwater to be systematically discharged from the highest point to the slope zone 3, and finally into the final drain outlet 2.

[0049] As can be seen from the above, the BIM-based roof slope design method of this invention can dynamically adjust the strip size according to the tile type of different projects. During construction, the roof surface will not produce ridges, breaking through the limitation that the roof cannot be covered with large-sized tiles. At the same time, the design of the slope strip avoids water accumulation at the drain outlet, improves construction quality and efficiency, and effectively reduces cost input.

Claims

1. A BIM-based roof slope drawing deepening design method, characterized in that, Specifically, whether the downspout position needs to be adjusted is determined according to the downspout position in the original design drawing, the final downspout position is determined, a horizontal slope belt and a vertical slope belt perpendicular to the horizontal slope belt are set according to the final downspout position, the two slope belts finally intersect at the final downspout, the horizontal and vertical slope belts are set to re-slope, the final downspout position is determined to make the water divide ridge, the roof rainwater on both sides of the water divide ridge is drained through the slope to the slope belt, and then drained to the final downspout through the slope belt, and finally drained to the outside through the pipeline, thereby completing the deepening design of the roof slope drawing; The re-sloping refers to sloping from the final downspout along the horizontal slope belt and the vertical slope belt to the end far away from the downspout; The position of the final downspout should meet the following conditions: the slope belt is connected with the corresponding downspout to ensure that the slope belt can effectively drain the roof rainwater to the downspout; if there is an obstruction to block the drainage, the downspout position is adjusted so that the slope belt can avoid the obstruction, thereby ensuring that the slope belt can effectively drain the roof rainwater to the downspout; If the downspout position does not need to be adjusted, the downspout position in the original design drawing is taken as the final downspout position; if the downspout position needs to be adjusted, the final downspout is connected with the pipeline of the downspout position in the original design drawing through a buried pipeline, and the downspout in the original design drawing is filled; The size of the slope belt is determined according to the size of the roof tiles, and the width of the slope belt is b, then b = nx + (n-1)s wherein n is the number of tiles laid in the width direction of the slope belt, x is the side length of the tile laid in the width direction of the slope belt, and s is the width of the joint between adjacent two tiles in the width direction of the slope belt.

2. The BIM-based roof take-off drawing deepening design method according to claim 1, characterized in that, The width of the slope belt at the final downspout is the same as the tile molding width of the final downspout.

3. The BIM-based roof take-off drawing deepening design method according to claim 1, characterized in that, After the width and position of the slope belt are determined, the position of the water divide ridge is determined. The determination of the position of the water divide ridge is specifically that the farthest distance between the two final downspouts is calculated according to the positions of the two final downspouts, and the position of the water divide ridge is located at half of the farthest distance.

4. The BIM-based roof take-off drawing deepening design method according to claim 3, characterized in that, The water divide ridge is the highest position of the roof, so that the roof rainwater is drained through the slope to the slope belt, and finally drained to the final downspout.

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