Design method of sunshade for non-motorized vehicle lane based on computer sunlight analysis

Abstract

The present invention discloses a method for setting up a sunshade for a non-motorized vehicle lane based on computer sunlight analysis, comprising the following steps: 1. determining whether the location of an urban intersection where a sunshade is required to be set up on a non-motorized vehicle lane meets basic requirements; 2. preliminarily determining the length a and width b of the sunshade; and calculating and determining the number, position, and size of the column foundations of the sunshade according to structural calculation requirements; 3. using CAD software to draw a plan view of the urban intersection location containing the sunshade; 4. using the CAD software to perform sunlight analysis on the plan view to obtain effective shading rates AE for all different situations; and 5. comparing all the obtained effective shading rates AE to obtain parameters of the sunshade with the optimal effective shading rate AE. The present invention uses computer software to replace manual calculations and comparisons of a large number of mechanical properties, thereby reducing the design workload while avoiding waste such as poor results and rework, thereby improving construction and design efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of computer-aided design, and in particular to a design method for sunshades for non-motorized vehicle lanes based on computer sunlight analysis. Background Art

[0002] The problem of "summer sun exposure" is prominent in waiting areas for non-motorized vehicles at existing urban road intersections. Due to the hot summer weather, direct sunlight causes extremely high road surface temperatures at intersections. Many intersections lack shade, and non-motorized vehicles must wait for red lights for at least 30 seconds, or even several minutes. This exposure to the scorching sun can lead to illegal behaviors such as running red lights or parking across the line to avoid the sun, which can easily cause traffic accidents.

[0003] Due to the large flow of people on non-motorized vehicle lanes during rush hours, the roof coverage area of ​​non-motorized vehicle lane awnings is generally certain. The non-motorized vehicle lane awnings are referred to as awnings below, which limits the area of ​​the protected area. Usually, the width and length of the roof are increased to increase the protected area, but the increase in the width and length of the roof will increase the safety hazards of non-motorized vehicle lanes.

[0004] In actual application, the location of the awning needs to be considered in combination with the lighting angle. The lighting characteristics of east-west roads and north-south roads are different, which makes the awning settings different. Improper settings will not achieve the expected shading effect.

[0005] However, in the early design process, if a reasonable awning setting method is needed to effectively increase the shade area of ​​non-motorized vehicle lanes without increasing safety hazards, a large amount of mechanical calculations and comparisons are required, which greatly increases the design workload and is prone to human errors.

[0006] Therefore, how to use computer software to replace manual calculations and comparisons of mechanical properties, while reducing the design workload, can also reduce human calculation errors and improve design efficiency has become a technical problem that technical personnel in this field urgently need to solve. Summary of the Invention

[0007] In view of the above-mentioned defects of the prior art, the present invention provides a non-motorized vehicle lane awning design method based on computer sunshine analysis. The purpose of the design method is to use computer software to simulate sunshine analysis instead of manually performing a large number of mechanical property calculations and comparisons. It can efficiently complete the comparison and analysis of changes in many factors such as different roof styles and sizes, column positions, side sunshades, etc., and quantify the calculation results. While reducing the design workload, it can also avoid engineering waste such as rework due to poor results after the awning is built, thereby improving construction and design efficiency.

[0008] To achieve the above object, the present invention discloses a method for designing a sunshade for a non-motorized vehicle lane based on computer sunlight analysis, comprising the following steps:

[0009] Step 1: Determine whether the location of the urban intersection where the sunshade needs to be installed on the non-motorized vehicle lane meets the basic requirements; if not, the entire process is terminated;

[0010] Step 2: Preliminarily determine the length a of the awning based on the maximum length of the queue in the non-motorized vehicle lane waiting area at the urban intersection from 7:00 to 17:00 every day, and preliminarily determine the width b of the awning based on the width B of the non-motorized vehicle lane; wherein b≤B;

[0011] Calculate and determine the number, location and size of the column foundations of the awning according to structural calculation requirements;

[0012] Step 3: Based on the length a, width b, and the position and size of each column foundation, use CAD software to draw a plan view of the urban intersection location including the awning;

[0013] Step 4: Use the CAD software to perform sunlight analysis on the plan to obtain effective shading rates AE for all different situations;

[0014] Step 5: Compare all the effective shading rates AE obtained to obtain the length a, width b, height of the awning with the best effective shading rate AE, the position and size of each column foundation, whether to set side sunshades, the height of the sunshades and the bottom elevation parameters.

[0015] Preferably, in step 1, the basic requirements are as follows:

[0016] The urban intersection is open and unobstructed or the waiting time for the red light is greater than or equal to 45 seconds;

[0017] At the urban intersections where green coverage is poor, the non-motor vehicle flow rate must be greater than or equal to 3000 Veh / h;

[0018] The urban intersection has an independent non-motorized vehicle lane and a sidewalk, and the width of the non-motorized vehicle lane is not less than 3 meters.

[0019] Preferably, in step 2, when the width B of the non-motorized vehicle lane is ≤ 4.5 m, the width b of the awning is = B;

[0020] When the width B of the non-motorized vehicle lane is greater than 4.5 m, the width b of the awning is equal to 4.5 m.

[0021] Preferably, in step 3, the center position of each column foundation is not less than 500 mm from the corresponding side stone edge;

[0022] The top edge of the awning is greater than 1 meter away from the corresponding non-motor vehicle lane stop line.

[0023] Preferably, the CAD software is Tianzheng CAD.

[0024] More preferably, step 4 comprises the following steps:

[0025] Step 4.1, defining the roof thickness of the awning as "building height" in the Tianzheng CAD software;

[0026] The height of the lower edge of the awning roof is defined as the "building bottom elevation";

[0027] If the side sunshade is required, the distance between the first and last column bases is defined as the length of the side sunshade, the actual thickness of the side sunshade is defined as the width, the vertical height of the side sunshade is defined as the "building height", and the height of the lower edge of the side sunshade is defined as the "building bottom elevation";

[0028] Step 4.2: Set the latitude and longitude of the location of the awning and the time difference with Beijing in the CAD software, select the month to be analyzed and the high temperature period of the day, and define the ground height as the "calculation height";

[0029] The effective projected areas S1, S2, S3, ..., S of the sunshade during high temperature periods are calculated using the CAD software. i ;

[0030] Wherein, i is a natural number greater than or equal to 1;

[0031] S i The effective projection area of ​​the awning during each high temperature period;

[0032] Step 4.3, calculating the effective shading rate AE of the awning according to the following formula;

[0033]

[0034] Among them, AE is the effective shading rate, which is a percentage;

[0035] S e The effective shading time area of ​​the sunshade for the corresponding non-motorized vehicle lane during high temperature period, in m 2 ·h;

[0036] S max The ideal shading time area of ​​the awning for the corresponding non-motorized vehicle lane during high temperature period, in m 2 ·h;

[0037] S i is the effective projected area of ​​the awning during each high temperature period, in m 2 ;

[0038] T i is the corresponding effective projection area of ​​the awning S i The duration of , in h;

[0039] a is the length of the awning, in m;

[0040] B is the width of the non-motorized vehicle lane corresponding to the awning, in meters;

[0041] n is the number of high temperature periods, in units.

[0042] More preferably, in step 4.1, the thickness of the sunshade roof is 100 mm, or is determined according to the actual style and size;

[0043] The width of the side visor is 100 mm, or determined according to the actual size of the model;

[0044] The vertical height of the side shading plate is 600mm to 1000mm;

[0045] The lower edge height of the side sunshade is greater than 2.5m from the ground.

[0046] More preferably, in step 4.3, the high temperature period is from 9:00 to 16:00, T i is 1h, and n is 7.

[0047] Preferably, in step 5, the effective shading rate is calculated, and when the effective shading rate is ≤55%, a side sunshade is provided.

[0048] Beneficial effects of the present invention:

[0049] The present invention uses computer software to replace manual calculations and comparisons of a large number of mechanical properties. While reducing the design workload, it can also avoid engineering waste such as poor results and rework after the awning is built, thereby improving construction and design efficiency.

[0050] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 A flowchart illustrating a method for setting up a sunshade for a non-motorized vehicle lane based on computer sunlight analysis according to an embodiment of the present invention is shown.

[0052] Figure 2A schematic diagram of a simple CAD two-dimensional model design of a sunshade in an embodiment of the present invention is shown.

[0053] Figure 3 A schematic diagram of the CAD three-dimensional model design of the sunshade in an embodiment of the present invention is shown.

[0054] Figure 4 A schematic diagram showing the definition of the awning in Tianzheng CAD software in an embodiment of the present invention is shown.

[0055] Figure 5 A schematic diagram showing the definition of the "building height" of the awning in Tianzheng CAD software in an embodiment of the present invention.

[0056] Figure 6 A schematic diagram showing the definition of the "building bottom elevation" of the awning in Tianzheng CAD software in an embodiment of the present invention is shown.

[0057] Figure 7 A schematic diagram showing shadow contour analysis of Tianzheng CAD software in an embodiment of the present invention is shown.

[0058] Figure 8 A schematic diagram showing the selection of the city where the awning is located in an embodiment of the present invention.

[0059] Figure 9 A schematic diagram showing the selection of awning analysis time, high temperature period and calculation height in an embodiment of the present invention.

[0060] Figure 10 A schematic diagram of the shadow outline of the awning at different time periods calculated by software in an embodiment of the present invention is shown.

[0061] Figure 11 A schematic diagram showing parameters of the awning and side sunshades of the present invention is shown.

[0062] Figure 12 A schematic diagram showing the effective projection area of ​​the sunshade on a non-motorized vehicle lane according to the present invention. DETAILED DESCRIPTION

[0063] Example

[0064] like Figures 1 to 12 As shown, press Figure 1 Execution process. Select the east-west road in Hefei, Anhui Province from 9:00 to 16:00 on July 20, 2022, and analyze the sunshade at the east entrance. The roof length a = 15 meters, b = 3.5 meters, the non-motorized vehicle lane width is 3.5 meters, the roof inclination is 0 degrees, and no sunshade is set. Compare the effective shading rate of the columns set in the vehicle-non-motorized vehicle separation zone and the sidewalk (the distance from the curb is ≥ 500mm). Draw a simple 2D model of the sunshade in CAD. Figure 2 As shown, for the convenience of explanation, a 3D model of the awning is drawn in CAD. Figure 3 .

[0065] Software Operation

[0066] Step 1: Draw the awning style in CAD, and set the awning columns on the sidewalk;

[0067] Step 2: Simplify the roof outline as follows Figure 4 The two-dimensional plane rectangle shown (or different shapes corresponding to other styles) is convenient for software calculation and analysis.

[0068] Step 3: Define the building height and building bottom elevation in Tianzheng software. The building height of the awning is defined as 100mm and the building bottom elevation is defined as 3500mm in the model. Figure 5 Define the building height, Figure 6 Define the building base elevation.

[0069] Step 4: Calculate and analyze the shadow profile. Select the city where the awning project is located, such as Figure 8 As shown in the figure, select Hefei, Anhui Province. Figure 9 As shown, the analysis time is determined to be 2022 / 7 / 20, the high temperature period (start time 09:30, end time 15:30, calculation interval 60 minutes), the calculation height is 0 meters above the ground, and click OK after the parameter definition is completed.

[0070] Step 5: Tianzheng software calculates the shadow outlines of the seven moments with an interval of 60 minutes, starting at 09:30 and ending at 15:30, as shown below: Figure 10 By calculating the effective shading area Si within the non-motorized vehicle lane, as shown in Figure 12 The effective shading area Si within the non-motorized vehicle lane at different times is counted. The effective shading area S1 from 9:00 to 10:00 is the effective shading area at 9:30, the effective shading area S2 from 10:00 to 11:00 is the effective shading area at 10:30, and so on. S3, S4, S5, S6, and S7 are roughly calculated, as shown in Table 1.

[0071] Table 1 Effective shading area of ​​awning columns set on the sidewalk

[0072] Column setting position S1 S2 S3 S4 S5 S6 S7 sidewalk 37.79 34.86 33.40 33.40 34.78 37.90 43.69

[0073] Step 6: According to the effective shading rate formula proposed in the present invention, quantitatively calculate the effective shading rate AE1 of the awning columns set on the sidewalk.

[0074]

[0075] When the awning columns are set on the vehicle-non-vehicle separation strip, repeat steps 1 to 6 above.

[0076] The Si of the awning columns set on the separation zone between vehicles and non-vehicles is calculated and shown in Table 2.

[0077] Table 2 Effective shading area of ​​awning columns set on the roadside separation zone

[0078] Column setting position S1 S2 S3 S4 S5 S6 S7 Separation zone for vehicles and non-vehicles 51.05 51.45 50.04 50.04 51.45 51.05 45.09

[0079] Quantitatively calculate the effective shading rate AE2 of the awning columns set on the non-machine separation zone.

[0080]

[0081] Comparing the east entrance of the non-motorized vehicle lane on the east-west road, the effective shading rate AE2 calculated when the columns are set in the vehicle-non-motorized vehicle lane is greater than the effective shading rate AE1 calculated when the columns are set in the sidewalk. Therefore, the effective shading rate is greater when the awning columns are set in the vehicle-non-motorized vehicle lane on the east entrance of the east-west road.

[0082] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A design method for sunshades for non-motorized vehicle lanes based on computer sunlight analysis; the method is characterized by: The steps include: Step 1: Determine whether the location of the urban intersection where the sunshade needs to be installed on the non-motorized vehicle lane meets the basic requirements; if not, the entire process is terminated; Step 2: Preliminarily determine the length a of the awning based on the maximum length of the queue in the non-motorized vehicle lane waiting area at the urban intersection from 7:00 to 17:00 every day, and preliminarily determine the width b of the awning based on the width B of the non-motorized vehicle lane; wherein b≤B; Calculate and determine the number, location and size of the column foundations of the awning according to structural calculation requirements; Step 3: Based on the length a, width b, and the position and size of each column foundation, use CAD software to draw a plan view of the urban intersection location including the awning; Step 4: Use the CAD software to perform sunlight analysis on the plan to obtain effective shading rates AE for all different situations; The calculation formula of the effective shading rate AE of the awning is as follows: Among them, AE is the effective shading rate, which is a percentage; S e The effective shading time area of ​​the sunshade for the corresponding non-motorized vehicle lane during high temperature period, in m 2 ·h; S max The ideal shading time area of ​​the sunshade for the corresponding non-motorized vehicle lane during high temperature period, in m 2 ·h; S i is the effective projected area of ​​the awning during each high temperature period, in m 2 ; T i is the corresponding effective projection area of ​​the awning S i The duration of , in h; n is the number of high temperature periods, in units; Step 5: Compare all the effective shading rates AE obtained to obtain the length a, width b, height of the awning with the best effective shading rate AE, the position and size of each column foundation, whether to set side sunshades, the height of the sunshades and the bottom elevation parameters.

2. The method for designing a sunshade for a non-motorized vehicle lane based on computer sunlight analysis according to claim 1, characterized in that: In step 1, the basic requirements are as follows: The urban intersection is open and unobstructed or the waiting time for the red light is greater than or equal to 45 seconds; At the urban intersections where green coverage is poor, the non-motor vehicle flow rate must be greater than or equal to 3000 Veh / h; The urban intersection has an independent non-motorized vehicle lane and a sidewalk, and the width of the non-motorized vehicle lane is not less than 3 meters.

3. The method for designing a sunshade for a non-motorized vehicle lane based on computer sunlight analysis according to claim 1, characterized in that: In step 2, when the width B of the non-motorized vehicle lane is less than or equal to 4.5 m, the width b of the awning is equal to or equal to B; When the width B of the non-motorized vehicle lane is greater than 4.5 m, the width b of the awning is equal to 4.5 m.

4. The method for designing a sunshade for a non-motorized vehicle lane based on computer sunlight analysis according to claim 1, characterized in that: In step 3, the center position of each column foundation is not less than 500 mm from the corresponding side stone edge; The top edge of the awning is greater than 1 meter away from the corresponding non-motor vehicle lane stop line.

5. The method for designing a sunshade for a non-motorized vehicle lane based on computer sunlight analysis according to claim 1, characterized in that: The CAD software is Tianzheng CAD.

6. The method for designing a sunshade for a non-motorized vehicle lane based on computer sunlight analysis according to claim 5, characterized in that: Step 4 includes the following steps: Step 4.1, defining the roof thickness of the awning as "building height" in the Tianzheng CAD software; The height of the lower edge of the awning roof is defined as the "building bottom elevation"; If the side sunshade is required, the distance between the first and last column bases is defined as the length of the side sunshade, the actual thickness of the side sunshade is defined as the width, the vertical height of the side sunshade is defined as the "building height", and the height of the lower edge of the side sunshade is defined as the "building bottom elevation"; Step 4.2: Set the latitude and longitude of the location of the awning, as well as the time difference with Beijing in the CAD software, select the month to be analyzed and the high temperature period of the day, and define the ground height as the "calculation height"; The effective projected areas S1, S2, S3, ..., S of the sunshade during high temperature periods are calculated using the CAD software. i ; Wherein, i is a natural number greater than or equal to 1; S i The effective projection area of ​​the awning during each high temperature period; Step 4.3: Calculate the effective shading rate AE of the awning.

7. The method for designing a sunshade for a non-motorized vehicle lane based on computer sunlight analysis according to claim 6, characterized in that: In step 4.1, the thickness of the awning roof is 100 mm, or determined according to the actual size of the style; The width of the side visor is 100 mm, or determined according to the actual size of the model; The vertical height of the side shading plate is 600mm to 1000mm; The lower edge height of the side sunshade is greater than 2.5m from the ground.

8. The method for designing a sunshade for a non-motorized vehicle lane based on computer sunlight analysis according to claim 6, characterized in that: The high temperature period is from 9:00 to 16:00, T i is 1h, and n is 7.

9. The method for designing a sunshade for a non-motorized vehicle lane based on computer sunlight analysis according to claim 1, characterized in that: In step 5, the effective shading rate is calculated, and when the effective shading rate is ≤55%, a side shading plate is provided.

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