CN113822526A - Site index adaptive checking method for commercial land in controlled detailed planning stage - Google Patents

Site index adaptive checking method for commercial land in controlled detailed planning stage Download PDF

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CN113822526A
CN113822526A CN202110879497.9A CN202110879497A CN113822526A CN 113822526 A CN113822526 A CN 113822526A CN 202110879497 A CN202110879497 A CN 202110879497A CN 113822526 A CN113822526 A CN 113822526A
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tower
building
area
skirt
floor
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方榕
李力
韩冬青
刘华
孟媛
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Architectural Design And Research Institute Of Southeast University Co ltd
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Abstract

The invention discloses a method for checking the suitability of a plot index of a commercial land in a controlled detailed planning stage, which comprises the following steps: step 1, determining the range of the skirt building and the range of the tower building; step 2, determining the floor area of a first tower building according to the common area range of the standard floor of the tower building; calculating the number of the tower layers and the total building area of the first tower according to the ground control height and the common height value of each tower layer; step 3, placing a first tower building; step 4, determining the contour line of the range of the skirt building which can be built and enabling the contour line to deviate inwards to form a preparation surface of the bottom surface of the skirt building; calculating the maximum building floor area and the maximum floor area of the skirt house; step 5, checking the building density; step 6, judging whether the building volume ratio after the building area of the skirt house is adjusted meets the standard or not; the method can feed back whether the rationality of the land parcel indexes is matched with the planned and expected city form in real time.

Description

Site index adaptive checking method for commercial land in controlled detailed planning stage
Technical Field
The invention belongs to the technical field of urban planning and urban design, and particularly relates to a method for checking suitability of commercial land parcel indexes in a controlled detailed planning stage.
Background
The plot indexes are important means for city planning to control the spatial form and development intensity of the block. The land parcel indexes commonly used in the controllability detailed planning (control detailed) stage comprise land property, land parcel height upper limit (control high for short), volume rate upper limit, density maximum value and the like. In the current domestic urban planning system, the assignment of the plot indexes usually depends on experience, for example, plots with certain types of land properties, once the upper limit of the height is determined, the upper limit of the volume rate can be found out through a common data experience table, and a certain height control value corresponds to the unique upper limit of the volume rate. However, commercial office land (referred to as business office land, in the national standard "city land classification and planning construction land standard GB50137-2011, land category code belongs to class B") has particularity, and generally consists of tower and skirt, the building size and form are complex, the land parcel index is very sensitive and variable to the change of land parcel size and land parcel shape, and the experience table cannot cover the possibility of the change. Especially, when the non-traditional development modes such as a neighborhood dense network are met, the empirical numerical values are often invalid, and the problem that various indexes of the land are not matched with each other is often caused. The problem is usually discovered only in the stage of plot city design or building concept design, and in turn, the modification of the plot indexes for controlled detailed planning often causes the repetition of design and approval work and the delay of project progress.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the problems, the invention provides a method for verifying the suitability of the plot indexes of commercial land in a controlled detailed planning stage, which can ensure the feasibility and the matching of the relevant indexes of the plot.
The technical scheme is as follows: in order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows: the method for verifying the suitability of the commercial land parcel indexes in the controlled detailed planning stage specifically comprises the following steps:
step 1, determining the range within which a skirt house can be built and the range within which a tower can be built according to the standard of red lines of the construction concession land;
step 2, the height of the tower and the standard floor of the tower are accumulated in a certain corresponding relationship, so that the floor area of the first tower is determined according to the common area range of the standard floor of the tower; calculating the number of the tower layers according to the ground control height and the common value of the height of each tower layer, and further calculating the total building area of the first tower;
the calculation formula for calculating the number of tower layers is as follows:
LST＝floor(HTMAX/LHT)
in the formula, LSTRepresenting the number of the tower layers; hTMAXIndicating that the land parcel is controlled to be high; LHTRepresenting the common value of the height of each layer of the tower; floor () represents a floor function;
the formula for calculating the total building area of the first tower building is as follows:
TAT1＝LST*FAT1
in the formula, FAT1The floor area of the first tower is represented; TA (TA)T1And the total building area of the first tower is shown.
Step 3, randomly selecting one angle of the contour line of the range which can be built by the tower, and placing the first tower so that two side lines in the ground contour line of the first tower are collinear with two side lines in the contour line of the range which can be built by the tower;
step 4, determining a contour line of the constructable range of the skirt house and enabling the contour line to deviate inwards according to the common value of the depth of the skirt house to form a preparation surface of the bottom surface of the skirt house; calculating the maximum building floor area and the maximum floor area of the skirt building according to the control value of the building density of the land parcel;
wherein, the calculation formula for calculating the maximum building floor area is as follows:
FAQ+T＝SA*D
in the formula, FAQ+TRepresents the maximum building footprint; SA represents the total area of the building land; d represents a plot building density control value;
the maximum value of the floor area of the skirt house is calculated according to the following formula:
FAQm＝FAQ+T-FAT1
in the formula, FAQmThe maximum value of the floor area of the skirt house is represented; FAT1The floor area of the first tower is shown.
And 5, checking the building density according to the preparation surface of the bottom surface of the skirt house and the maximum floor area of the bottom layer of the skirt house, and adjusting the building area of the skirt house according to a checking result, wherein the specific method comprises the following steps:
FAQythe area of a preparation surface of the bottom surface of the skirt house is represented; FAQmThe maximum value of the floor area of the skirt house is represented;
if FAQy＞FAQmStarting from the corner where the first tower is located, counterclockwise cutting out the contour line of the constructable range of the skirt house and inwards offsetting the contour line to form a strip-shaped contour of the bottom layer of the skirt house, and enabling the area of the contour of the bottom layer of the skirt house to be equal to the maximum value of the floor area of the bottom layer of the skirt house;
if FAQy≤FAQmThe preparation surface of the bottom surface of the skirt house is the profile surface of the bottom surface of the skirt house; the number of layers of the skirt room is calculated according to the common layer height of each layer of the skirt room and the height limit of the skirt room, and then the total building area of the skirt room is calculated.
The number of the layers of the skirt room is calculated according to the common layer height of each layer of the skirt room and the height limit of the skirt room, and the calculation formula is as follows:
LSQ＝floor(HQMAX/LHQ)
in the formula, LSQThe number of layers of the skirt houses is represented; hQMAXIndicating the height limit of the skirt room; LHQThe common value of the height of each layer of the skirt house is represented; floor () represents a floor function;
the calculation formula of the total building area of the skirt house is as follows:
TAQ＝LSQ*FAQ1
in the formula, TAQRepresenting the total building area of the skirt house; FAQ1Representing the area of the outline of the bottom layer of the skirt house.
Step 6, calculating the maximum value of the total building area which can be accommodated by the land, comparing the maximum value with the total building area of the first tower building, judging whether the building volume ratio of the land at the moment meets the standard or not, and adjusting according to the judgment result, wherein the method specifically comprises the following steps:
step 6.1, calculating the maximum value TA of the total building area which can be accommodated by the plot according to the volume ratio in the controllability detailed planningQ+T(ii) a The calculation formula for calculating the maximum value of the total building area which can be accommodated by the land is as follows:
TAQ+T＝SA*F
in the formula, TAQ+TRepresenting the maximum value of the total building area that the plot can accommodate; SA represents the total area of the building land; f represents a building specified volume rate range threshold;
step 6.2, according to the total building area TA of the skirt houseQComparing the total building area TA of the first towerT1Maximum total building area TA capable of being accommodated by land parcelQ+TSize, results are as follows:
if TAT1≥TAQ+TIf the building volume rate is lower than the building specified volume rate range threshold value and does not accord with the building volume rate standard, returning to the step 2;
if TAT1＜TAQ+TAnd TAQ+TAT1≥TAQ+TThe number of layers of the skirt house is reduced to ensure TAQ+TAT1≤TAQ+TAt the moment, the building volume ratio meets the standard, and a building block three-dimensional model is generated according to the number of the reduced skirt building layers;
if TAT1＜TAQ+TAnd TAQ+TAT1＜TAQ+TCalculating the total area and the number of layers of the second tower building according to the standard layer area of the second tower building, generating the second tower building, judging whether the volume ratio of the second tower building is in accordance with the standard or not, and adjusting according to the judgment result;
the formula for calculating the total area of the second tower building is as follows:
TAT2＝TAQ+T-TAQ-TAT1
in the formula, TAT2Representing the total area of the second tower;
the calculation formula for calculating the number of the second tower floor is as follows:
LST2＝floor(TAT2/FAT2)
in the formula, LST2Representing the number of the second tower floor; FAT2Representing the common area of the standard floor of the second tower; floor () represents a floor function.
Further, step 6.2 is to judge whether the volume ratio of the second tower building is in accordance with the standard, specifically as follows:
adjusting the position of the second tower to the opposite angle of the first tower, if the two towers have an overlapping relation, indicating that the volume ratio does not meet the standard, and ensuring that the total building area TA of the second tower is not consistent with the standardT2＝0；
If the distance between the first tower and the second tower is larger than a preset value, the second tower is set to meet the standard;
and if the distance between the first tower and the second tower is not greater than the preset value, combining the two towers to generate a new plate tower.
The invention further provides a computer device, which comprises a memory and a processor, wherein the memory stores a computer program, and the processor realizes the steps of the controlled detailed planning stage commercial site index adaptive check method when executing the computer program.
Further, the present invention also provides a computer readable storage medium, in which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the controlled detailed planning phase commercial site index adaptive check method.
Has the advantages that: compared with the prior art, the technical scheme of the invention has the following beneficial technical effects:
by utilizing the method, when a planners assigns values to the commercial land parcels in the controlled detailed planning stage, whether the group of indexes is feasible or not can be obtained in real time, namely whether the planned urban form requirements can be met or not under the requirements of the relevant specifications of the modern Chinese buildings. If the method can achieve the effect, possible shape effects of the land parcel building blocks can be obtained in real time. If not, a suggestion of which index should be adjusted in which direction may be obtained. The method of the invention has the following beneficial effects:
(1) the effectiveness and the rationality of the assignment of the market parcel indexes in the controlled detailed planning stage are improved, and the reworking after the unreasonable parcel indexes are found in the building concept design or parcel city design stage is avoided;
(2) by the technology of automatically generating the building block three-dimensional model through a computer, the possible future building forms can be exhaustively analyzed, and thought limitation caused by personal aesthetics during manual verification is avoided;
(3) the method realizes the more refined control and guidance of the planning indexes on the building form, and turns to the index group management and control which can be associated with the three-dimensional space form of the city in real time by a more rough city form management method based on two-dimensional control indexes, thereby improving the precision and the effective degree of the city planning management.
Drawings
FIGS. 1(a) -1 (f) are flow diagrams of the method of the present invention according to one embodiment;
fig. 1(a) is a schematic diagram of the boundary-receding determination constructable range in step 1 according to an embodiment;
FIG. 1(b) is a schematic diagram of an embodiment of a first tower generated in step 2;
FIG. 1(c) is a schematic diagram of the pre-production of the bottom surface of the skirt in step 3 according to an embodiment;
FIG. 1(d) is a schematic diagram of the building density check in step 4 according to an embodiment;
FIG. 1(e) is a schematic diagram of the first volume fraction determination in step 5 according to an embodiment;
FIG. 1(f) is a schematic diagram of the second determination of the volume fraction in step 6 according to an embodiment;
FIG. 2 is a representation of a digitally and automatically generated three-dimensional volumetric shape of a building, according to one embodiment.
Detailed Description
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
The controlled detail planning stage commercial land parcel index suitability checking method disclosed by the invention refers to the figures 1(a) -1 (f), and specifically comprises the following steps:
step 1, referring to fig. 1(a), bound-off determination of constructable range: according to related local standards (such as the requirement of minimum distance of red line of a planned road of a backward city of a building in the technical provision of planning and management of the city of provinces of Jiangsu), red line of the backward land of the building is formed to form the range of constructable skirt houses and the range of constructable tower buildings.
Step 2, referring to fig. 1(b), generating a first tower: according to the value range of the common area of the standard layer of the tower, the height of the tower and the standard layer of the tower are accumulated in a certain corresponding relation to obtain the floor area FA of the first towerT1. Setting the height of the land block to HTMAXVertically stretching the tower floor to HTMAXAnd generating a first tower. According to the high common value LH of each layerTCalculating the number of tower layers LST＝floor(HTMAX/LHT) Calculating the total building area TA of the first towerT1＝LST*FAT1. Randomly selecting one angle of the tower constructable range contour line to place the tower, so that two side lines in the tower ground contour line are collinear with two side lines in the tower constructable range contour line.
Step 3, referring to fig. 1(c), skirt bottom surface pre-generation: the bottom surface of the skirt house is pre-generated, according to the depth common value of the skirt house, the contour line of the range where the skirt house can be built is inwardly deviated to form a preparation surface of the bottom surface of the skirt house, and the area is FAQy. Setting the total land area as SA, and calculating the maximum building land area FA according to the control value D of the building density of the land blockQ+TSA x D, maximum floor area FA of skirt houseQm＝FAQ+T-FAT1。
Step 4, referring to fig. 1(d), building density check:
(1) if FAQy＞FAQmStarting from the corner of the tower, counterclockwise cutting the contour line of the constructable range of the skirt house and inwards offsetting to form a strip-shaped skirt house bottom contour with the area of FAQ1So that FAQ1＝FAQm。
(2) If FAQy≤FAQmAnd the preparation surface of the bottom surface of the skirt house is the outline range of the bottom surface of the skirt house. According to the layer height LH commonly used for each layerQAnd skirt room height limit HQMAXCalculating the number LS of layers of the skirt roomQ＝floor(HQMAX/LHQ) Calculating the total building area TA of the skirt houseQ＝LSQ*FAQ1。
Step 5, referring to fig. 1(e), first judging the volume ratio:
according to the volume ratio F specified by the control, the maximum value TA of the total building area that the land can accommodateQ+T＝SA*F。
(1) If TAT1≥TAQ+TIf the volume ratio is insufficient, the building can not meet the requirement of city design form in the future under the numerical control of the volume ratio, and the volume ratio needs to be increased
(2) If TAT1＜TAQ+TAnd TAQ+TAT1≥TAQ+TThen the number of layers of the skirt house is reduced, so that TAq+TAT1≤TAQ+TAnd the volume ratio is feasible, and a three-dimensional model of the building block can be generated.
(3) If TAT1＜TAQ+TAnd TAQ+TAT1＜TAQ+TAnd then, the second tower building needs to be generated. The total area of the second tower is TAT2＝TAQ+T-TAq-TAT1Setting a common area FA of a standard floor of a second tower buildingT2The second tower has LS number of layersT2＝floor(TAT2/FAT2)。
TABLE 1 empirical table of general data assigned to indexes of plots at conventional control detail stage
Figure BDA0003191577100000051
Step 6, referring to fig. 1(f), when the volume ratio, i.e. the number of turrets, is 2: and adjusting the position of the second tower to the opposite angle of the first tower.
(1) If two tower buildings are overlapped, the volume ratio is higher, and the volume ratio needs to be reduced to TAT2＝0。
(2) If the distance between the two tower buildings is larger than a set value, the volume ratio is feasible.
(3) And if the distance between the two tower buildings is smaller than or equal to a set value, combining the two point type tower buildings to generate a new plate type tower.
The invention further provides a computer device, which comprises a memory and a processor, wherein the memory stores a computer program, and the processor realizes the steps of the controlled detailed planning stage commercial site index adaptive check method when executing the computer program.
Further, the present invention also provides a computer readable storage medium, in which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the controlled detailed planning phase commercial site index adaptive check method.
Due to the fact that indexes of commercial land in plots with different sizes and different shapes are very different, and the problem that an experience assignment method of the traditional controlled detailed planning is often invalid is solved, the method for digitally generating the building three-dimensional model participates in checking and correcting in the controlled detailed planning stage, and timely feeds back the possible future building three-dimensional volume forms under the control of relevant indexes, and the matching degree and the feasibility of land use indexes are guaranteed by referring to the graph 2.

Claims (10)

1. The method for verifying the suitability of the indexes of the commercial land parcel in the controlled detailed planning stage is characterized by comprising the following steps:
step 1, determining the range within which a skirt house can be built and the range within which a tower can be built according to the standard of red lines of the construction concession land;
step 2, determining the floor area of a first tower building according to the common area range of the standard floor of the tower building; calculating the number of the tower layers according to the ground control height and the common value of the height of each tower layer, and further calculating the total building area of the first tower;
step 3, randomly selecting one angle of the contour line of the range which can be built by the tower, and placing the first tower so that two side lines in the ground contour line of the first tower are collinear with two side lines in the contour line of the range which can be built by the tower;
step 4, determining a contour line of the constructable range of the skirt house and enabling the contour line to deviate inwards according to the common value of the depth of the skirt house to form a preparation surface of the bottom surface of the skirt house; calculating the maximum building floor area and the maximum floor area of the skirt building according to the control value of the building density of the land parcel;
step 5, checking the building density according to the preparation surface of the bottom surface of the skirt house and the maximum floor area of the bottom layer of the skirt house, and adjusting the building area of the skirt house according to the checking result;
and 6, calculating the maximum value of the total building area which can be accommodated by the land, comparing the maximum value with the total building area of the first tower, judging whether the building volume ratio of the land at the moment meets the standard or not, and adjusting according to the judgment result.
2. The controlled detailed planning phase commercial site block index suitability nuclear verification method as claimed in claim 1, wherein the calculation formula for calculating the tower floor number in step 2 is as follows:
LST＝floor(HTMAX/LHT)
in the formula, LSTRepresenting the number of the first tower; hTMAXIndicating that the land parcel is controlled to be high; LHTRepresenting the common value of the height of each layer of the tower; floor () represents a floor function;
the formula for calculating the total building area of the first tower building is as follows:
TAT1＝LST*FAT1
in the formula, FAT1The floor area of the first tower is represented; TA (TA)T1And the total building area of the first tower is shown.
3. The controlled detailed planning phase commercial site block index suitability verification method according to claim 1, wherein the calculation formula of step 4 for calculating the maximum building footprint is as follows:
FAQ+T＝SA*D
in the formula, FAQ+TRepresents the maximum building footprint; SA represents the total area of the building land; d represents the building density of the landA control value;
the maximum value of the floor area of the skirt house is calculated according to the following formula:
FAQm＝FAQ+T-FAT1
in the formula, FAQmThe maximum value of the floor area of the skirt house is represented; FAT1The floor area of the first tower is shown.
4. The controlled detailed planning phase commercial site parcel index suitability verification method according to claim 1, wherein the method of step 5 is specifically as follows:
FAQythe area of a preparation surface of the bottom surface of the skirt house is represented; FAQmThe maximum value of the floor area of the skirt house is represented;
if FAQy＞FAQmStarting from the corner where the first tower is located, counterclockwise cutting out the contour line of the constructable range of the skirt house and inwards offsetting the contour line to form a strip-shaped contour of the bottom layer of the skirt house, and enabling the area of the contour of the bottom layer of the skirt house to be equal to the maximum value of the floor area of the bottom layer of the skirt house;
if FAQy≤FAQmThe preparation surface of the bottom surface of the skirt house is the profile surface of the bottom surface of the skirt house; the number of layers of the skirt room is calculated according to the common layer height of each layer of the skirt room and the height limit of the skirt room, and then the total building area of the skirt room is calculated.
5. The controlled detail planning stage commercial land parcel index suitability verification method according to claim 4, wherein the number of the skirt houses is calculated according to the common floor height of each layer of the skirt houses and the skirt house height limit, and the calculation formula is as follows:
LSQ＝floor(HQMAX/LHQ)
in the formula, LSQThe number of layers of the skirt houses is represented; hQMAXIndicating the height limit of the skirt room; LHQThe common value of the height of each layer of the skirt house is represented; floor () represents a floor function;
the calculation formula of the total building area of the skirt house is as follows:
TAQ＝LSQ*FAQ1
in the formula, TAQRepresenting the total building area of the skirt house; FAQ1Representing the area of the outline of the bottom layer of the skirt house.
6. The controlled detailed planning phase commercial site parcel index suitability verification method according to claim 1, wherein the method of step 6 is specifically as follows:
step 6.1, calculating the maximum value TA of the total building area which can be accommodated by the plot according to the volume ratio in the controllability detailed planningQ+T(ii) a The calculation formula for calculating the maximum value of the total building area which can be accommodated by the land is as follows:
TAQ+T＝SA*F
in the formula, SA represents the total area of the construction land; f represents a building specified volume rate range threshold;
step 6.2, according to the total building area TA of the skirt houseQComparing the total building area TA of the first towerT1Maximum total building area TA capable of being accommodated by land parcelQ+TSize, results are as follows:
if TAT1≥TAQ+TIf the building volume rate is lower than the building specified volume rate range threshold value and does not accord with the building volume rate standard, returning to the step 2;
if TAT1＜TAQ+TAnd TAQ+TAT1≥TAQ+TThe number of layers of the skirt house is reduced to ensure TAQ+TAT1≤TAQ+TAt the moment, the building volume ratio meets the standard, and a building block three-dimensional model is generated according to the number of the reduced skirt building layers;
if TAT1＜TAQ+TAnd TAQ+TAT1＜TAQ+TAnd calculating the total area and the number of the second tower building according to the standard floor area of the second tower building to generate the second tower building, judging whether the volume ratio of the second tower building is in accordance with the standard or not, and adjusting according to the judgment result.
7. The controlled detailed planning phase commercial site block index adaptive check method according to claim 6, wherein the formula for calculating the total area of the second tower in step 6.2 is as follows:
TAT2＝TAQ+T-TAQ-TAT1
in the formula, TAT2Representing the total area of the second tower;
the calculation formula for calculating the number of the second tower floor is as follows:
LST2＝floor(TAT2/FAT2)
in the formula, LST2Representing the number of the second tower floor; FAT2Representing the common area of the standard floor of the second tower; floor () represents a floor function.
8. The controlled detailed planning phase commercial site block index suitability nuclear verification method according to claim 6, wherein the step 6.2 judges whether the volume rate when generating the second tower meets the standard, specifically as follows:
adjusting the position of the second tower to the opposite angle of the first tower, if the two towers have an overlapping relation, indicating that the volume ratio does not meet the standard, and ensuring that the total building area TA of the second tower is not consistent with the standardT2＝0；
If the distance between the first tower and the second tower is larger than a preset value, the second tower is set to meet the standard;
and if the distance between the first tower and the second tower is not greater than the preset value, combining the two towers to generate a new plate tower.
9. A computer arrangement, characterized in that the computer arrangement comprises a memory storing a computer program and a processor implementing the steps of the controlled detailed planning phase commercial-type parcel indicator adaptive check method of claims 1-8 when executing the computer program.
10. A computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the controlled detailed planning phase commercial site index adaptive check method of claims 1-8.
CN202110879497.9A 2021-08-02 2021-08-02 Site index adaptive checking method for commercial land in controlled detailed planning stage Pending CN113822526A (en)

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Application publication date: 20211221