CN111898181B - Automatic assembling method for ancient building model - Google Patents
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
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Abstract
The invention discloses an automatic assembly method of an ancient building model, which comprises the following steps: the method comprises the steps of setting five dimensions of the spatial variation of the ancient building model; setting or adjusting basic control parameters according to five dimensions; automatically generating a vertical elevation database table according to related basic control parameters; automatically generating a planar shaft network database table according to the related basic control parameters; automatically generating a component size database table according to the relevant basic control parameters; finishing the manufacturing of the component entity by the BIM plug-in platform; establishing association among a plane axis network database table, a vertical elevation database table and a component entity table, and generating a one-to-many component table; the automatic assembly unit reads the data of each table in the step seven to complete the automatic assembly of the current model; and (3) whether the space dimension of the current model needs to be changed, if so, selecting the dimension of the model change, returning to the step two, and if not, ending the automatic assembly process. The invention solves the problem that manual assembly is time-consuming and labor-consuming when the ancient building model is assembled on the BIM platform.
Description
Technical Field
The invention belongs to the technical field of ancient building models, and particularly relates to an automatic assembling method of an ancient building model.
Background
The ancient Chinese building is the most direct existing evidence of the long-range current of the culture of Chinese civilization, the ancient Chinese building is mainly an official ancient building, and the official ancient building is the ancient building which is built by the official host of the ancient dominant dynasty. The official ancient buildings are divided into two categories of 'Song style official' and 'Qing style official' according to different methods. The ancient building with the 'Qing style official' is the type of ancient building with the largest number and the largest distribution area stored in China at present. Such as ancient building group of Beijing palace, beijing Yong and palace, ancient building group of Hebei Mai De sunstroke mountain village, ancient building group of Shandong Kong temple, etc. are all 'Qing style' ancient buildings.
From the original working mode of the domestic ancient architecture repair protection industry, the ancient architecture to be repaired is generally adopted by the cultural relic protection investigation and design institute: 1. to a site survey and measurement of ancient buildings; 2. mapping CAD drawings of ancient buildings; 3. manufacturing a repair scheme diagram according to the CAD drawing; 4. and the construction unit performs construction according to the repair scheme CAD graph. The repair protection mode based on the ancient architecture CAD drawing lacks of accurate cognition of multiple visual angles and multiple dimensions of the ancient architecture structural framework, and single ancient architecture mapping drawing is single and cannot be used for one drawing, when a plurality of different ancient architectures are involved for repair, each ancient architecture needs to be mapped individually one by one, and therefore a plurality of workloads are increased.
In order to solve the problems of singleness and incapability of one-figure multi-purpose, the prior art uses BIM building model software to replace drawing CAD drawings, but the problem that assembling an ancient building model in BIM software is very time-consuming and labor-consuming still can not be solved by adopting BIM building model software: because BIM software is developed for a modern building model, a set of rules are provided for the installation positions of the parts of the modern building, although the BIM software is divided into two steps: the parts are firstly manufactured and then the parts assembly model is manually dragged, but the manual assembly is very simple and convenient, and the parts can automatically move to the preset positions only by making the coordinate positions of the building in a new project and clicking the patterns of the parts such as the columns, the roofs and the wall surfaces. However, for applications of ancient buildings, the BIM software does not identify each component of the ancient building, but rather identifies the components as plug-ins, for example, whether the components are posts, roofs and walls are identified as plug-ins, and when the components are assembled manually, the BIM software does not identify whether the components are posts, roofs or walls currently dragged manually, so when the graphics of the posts, roofs and walls are clicked manually, the BIM software cannot automatically position the components to the positions desired by a user, and instead, the positions of the components need to be determined manually one by one, just like building blocks, and the positions of the components are built all by manual work. Because each part of the ancient building is connected through the tenon structure, the parts are locked by means of the tenons, if the ancient building of a three-story building needs hundreds of components and hundreds of tenons, each local connection needs to be locked through the tenons in the manual building process, if one part is not locked and correction is not found in time, the hundreds of components at the back can be pushed down and weighted because the part at the front is not locked even if the building is completed. Since it is very time-consuming to manually build the historic building model in the BIM software, if the time to make the historic building model component entity is thrown away, only assembling one historic building model requires a minimum of several weeks or even a minimum of months, including the time of multiple rework rebuilds that may occur in the middle.
Along with the improvement of the space dimension change requirement of the ancient building, users not only meet the automatic assembly of the model of the ancient building, but also make any change to the model within the allowable range of the space dimension according to the requirement of projects, including unidirectional change and combination direction change, so that the requirement of the space dimension change of the model presents a more difficult problem to us, and the model is required to be reassembled every time the requirement change because the model cannot be duplicated.
Disclosure of Invention
The invention provides an automatic assembling method of an ancient building model aiming at the defects of the prior art, and aims to solve the problems that the prior art needs a long time for manually assembling the model and the original model cannot be duplicated and the model needs to be reassembled when the shape of the model is changed.
The invention adopts the following technical scheme for solving the technical problems.
An automatic assembling method of an ancient building model is characterized by comprising the following steps:
step one, setting five dimensions of the spatial variation of the model of the ancient building;
the five dimensions comprise a depth direction, a wide direction, a vertical direction, a slope direction and a shrinkage direction of the model;
setting or adjusting basic control parameters according to five dimensions;
Step three, automatically generating a vertical elevation database table according to relevant basic control parameters;
step four, automatically generating a plane shaft network database table according to relevant basic control parameters;
step five, automatically generating a component size database table according to relevant basic control parameters;
step six, finishing the manufacture of the component entity by the BIM plug-in platform and saving the component entity as a component entity file;
establishing a correlation among the planar shaft network database table, the vertical elevation database table and the component entity table, and generating a one-to-many component table;
step eight, the automatic assembly unit respectively reads the data of each table in the step seven to complete the automatic assembly of the current model;
step nine, whether the space dimension of the current model needs to be changed, if so, selecting the dimension of the model change, returning to the step two, and if not, ending the automatic assembly process.
The third step automatically generates a vertical elevation database table, and the specific process is as follows:
receiving parameters transmitted by a central control unit;
the transmitted parameters comprise the through height dimension of the eave column, the height and the jump-out distance of the bracket, various sizes of the walking frames of the walking frame size setting table, various lifting and folding coefficients of the lifting and folding coefficient setting table, the number of openings in the depth direction and the number of openings in the wide direction;
Setting a component mounting sequence by the mounting sequence algorithm unit;
the installation sequence algorithm unit generates a component installation sequence database table according to the variable parameters of the quantity of the depth and wide directions and the building rule of the ancient building model, wherein the database table comprises an ID number, a component category name, a project name and an installation sequence, and the building rule of the ancient building model is as follows: the number of the openings in the depth direction is changed, so that the slope surface is changed and the length of the broad surface is unchanged; and if the number of the open areas in the broad face direction is changed, the length of the broad face is changed, the slope is unchanged, and the installation sequence algorithm unit automatically calculates the component category and the installation sequence of each condition of the model according to the rule.
Setting a component elevation algorithm by a component elevation algorithm unit;
the component elevation algorithm comprises a hypodermis algorithm and an epithelium algorithm of various components, and particularly comprises a hypodermis algorithm and an epithelium algorithm of columns, purlins, backing plates, purlins, piers, beams and climbing beams.
Generating a vertical elevation database table;
and step four, automatically generating a plane axis network database table, wherein the specific process is as follows:
receiving parameters transmitted by a central control unit;
the transmitted parameters comprise the number of the openings in the depth direction and the width of the openings in the wide direction;
Secondly, automatically generating the number of columns of the shaft net according to the number of the openings in the wide direction;
thirdly, automatically generating the number of lines of the shaft network according to the number of the gaps in the depth direction;
automatically generating Y coordinates of the axial network according to the width of the opening in the wide direction;
fifthly, automatically generating X coordinates of the shaft network according to the width of the gap in the depth direction;
according to the depth direction opening quantity and the face-widening direction opening quantity, searching a corresponding model building rule basic table, so as to obtain vertical components of each coordinate on the plane axis netlist, and storing the vertical components on coordinate point space component data items of the plane axis netlist in a character string form;
and generating a planar axis network database table.
The process automatically generates the column number of the shaft net according to the number of the openings in the wide direction, and the specific algorithm is as follows:
i. plane axis net column number = dynamic column + fixed column, the dynamic column comprises the number of open spaces in the broad face direction +1+ column number of gold purlins in the broad face direction; the fixed column of the plane axis net list=the column number between the broad direction pins, and the column number between the broad direction pins is fixed to be 2; the purlin is classified by gold words.
The process comprises the steps of automatically generating the number of lines of the shaft network according to the number of the intervals in the depth direction, wherein the specific algorithm is as follows:
ii. Plane axis net line number = dynamic line + fixed line, the dynamic line includes number +1 of depth direction intervals + column number-2 of depth direction purlin, the fixed line = column number of depth direction tips + column number of ridge purlin, column number of depth direction tips is fixed as 2, column number of ridge purlin is fixed as 1;
the process step is as follows:
i. reading the model construction rule basic table data, and obtaining a current coordinate point space component;
ii. Assigning a component category ID number to each component of the current coordinate point space component, wherein the component category ID number corresponds to the ID number of the vertical elevation database table one by one;
and (3) generating a coordinate point space component character string which consists of the component category ID numbers and the intervals Fu Pinjie of the current coordinate point space component, and storing the character string on a coordinate point space component data item of the plane axis network database table.
The specific process of generating the one-to-many component data table in the step seven is as follows:
the method comprises the steps of obtaining a current coordinate point space component character string from a plane axis network data table;
intercepting the character string, and acquiring a component category ID number of each component of the current coordinate point;
thirdly, taking the current row, the current column and the component category ID number as unique numbers, and inserting components with different category ID numbers at the same coordinate point into a one-to-many component data table;
Sorting the one-to-many component data table according to component types;
and fifthly, obtaining coordinates of the plurality of components in the same category in the plane axis netlist.
The automatic assembly of the eight-step model comprises the following specific processes:
reading component elevation data table data;
secondly, obtaining the ID number, the hypodermis size and the epithelium size of the current component to be assembled;
thirdly, obtaining each plane coordinate corresponding to the component category ID number from a one-to-many component data table;
acquiring a BIM entity file corresponding to the component category ID number;
fifthly, assembling the model according to the hypodermis size, the epithelium size, the plane coordinates and the entity files of each type of components.
The process for carrying out the bathing comprises the following steps: when two model components are locked and connected, the computer judges whether the mutual distance between the two components enters a certain range, if so, the computer judges whether the heights and horizontal coordinates of the tenon part and the mortise part of the two components are consistent, and if so, the tenon part is moved into the mortise part, so that the locking and the connection of the two components are completed.
And step nine, selecting the dimension of the model change, including single selection or multiple selection.
Advantageous effects of the invention
1. The invention uses the computer to simulate the design idea of the ancient building, organically combines the design idea of the ancient building, the BIM plug-in platform and the computer technology, supports and interdepends each other, solves the problems that the prior art needs a long time for assembling the model of the ancient building and the model cannot be reused, overcomes the defect that the BIM software platform cannot realize the automatic assembling of the model of the ancient building at present, and obtains a leap from variable to variable.
2. The invention can provide the service of model change of 5 dimensions, and a user performs single selection or multiple selections on the dimension of the model change, and because the computer provides the service of automatic assembly, the user can see the result after the model change almost while modifying the parameters, thereby greatly improving the satisfaction degree of the user.
Drawings
FIG. 1 is a block diagram of an automated assembly system for an ancient building model;
FIG. 2 is a flow chart of an automated assembly method for an ancient building model;
FIG. 3a is a table of the size settings of the bucket openings, the bucket arches, the eave posts, and the correspondence between items and the bucket openings and the bucket arches;
FIG. 3b is a table showing the size of the frame and the fold coefficient;
FIG. 3c is a bay number setting table;
FIG. 3d is a gap width setting table;
FIG. 4 is a vertical elevation representation intent;
FIG. 5a is a schematic diagram of a planar shaft netlist;
FIG. 5b is a one-to-many component representation intent;
FIG. 6a is a purlin sizing;
FIG. 6b is a shim plate sizing;
FIG. 6c is a purlin sizing;
FIG. 6d is a beam sizing;
FIG. 6e is a buttress sizing;
FIG. 6f is a compliant beam size arrangement;
FIG. 7 is a three-dimensional view of an ancient building model;
FIG. 8 is a top view of an historic building model;
FIG. 9 is a section B-B of FIG. 8;
FIG. 10 is a cross-sectional view A-A of FIG. 8;
FIG. 11 is a view of a model hill of an historic building;
FIG. 12 is a schematic view of a bucket mouth and bucket arch;
FIG. 13 is a plan axis netlist row and column schematic;
Detailed Description
Design principle of the invention
1. Principle of computer simulating ancient building algorithm
Basic parameter setting table
A. The 8 basic parameter setting tables in total in fig. 3a-3d are basic tables for model construction, and all data of the model are calculated from these 8 tables.
B. The 8 base tables 2 are fixed, only for selection without modification: the bucket arch parameter setting table comprises a bucket opening parameter setting table and an bucket arch parameter setting table which are fixed tables.
C. The other 6 tables are related to items, and each time an item is newly created, parameters need to be selected again or input.
D. The gauge structure of the opening width setting gauge (the broad direction and the depth direction) dynamically changes with the change of the number of openings.
E. The step size and the lifting coefficient setting table row record are increased along with the increase of the number of the intervals in the depth direction.
Table of automatic write-in of ground beetle
The data of the remaining 9 tables (fig. 4-6) are all written automatically, except for 8 basic parameter setting tables, without manual operation.
A. And (3) automatically writing vertical elevation database table data: the elevation of all components is not separated from 3 kinds of data: the elevation of each component is calculated according to the 3 kinds of data, wherein the elevation of each component is related to the height of the eave column, the size table of the step frame and the lifting coefficient table. And when a project is newly built or modified each time, the central control unit transmits the parameters of the 3 types of changes to the vertical elevation data unit, so that the automatic writing of the table data of the vertical elevation database is completed.
B. Automatically writing table data of a planar shaft network database: the data of the table come from a bay number setting table, a bay width setting table and a model building basic rule table. The open space quantity setting table is used for determining the rows and columns of the shaft netlist, the open space width setting table is used for determining the X coordinates and Y coordinates of the shaft netlist, and the model building basic rule table is used for determining the coordinate point space components of the shaft netlist. And when a project is newly built or modified each time, the central control unit transmits the parameters of the 3 types of changes to the vertical elevation data unit, so that the automatic writing of the table data of the planar axial network database is completed.
C. One-to-many member table data is automatically written: the one-to-many component database table is transformed from a planar axis network database table, the coordinate point space component of the planar axis network database table is a character string composed of component class ID numbers and separators, the character string is read from a model building basic rule table, each component class ID number is obtained after the character string is intercepted one by one, and then the character string is inserted into the one-to-many component database table according to the current row, the current column and the component class ID numbers as unique numbers.
D. Automatic writing of component size database table data:
i. Automatic writing of table data of purlin, pad, beam and down-climbing beam component size database: fig. 6a to 6c are tables of purlin, and pad member size database, including automatic writing of three types of data: automatic writing of first, component categories: the purlin, the backing plate, the beam and the climbing beam are all matched with the purlin, when the type of the purlin changes, the type of the purlin, the type of the backing plate size meter backing plate, the type of the beam and the type of the climbing beam change, the central control unit automatically recognizes the change of the purlin and the change of the purlin, the backing plate, the beam and the climbing beam matched with the purlin, then transmits the changed component types to a component size data unit, and the component size data unit automatically updates the component types in the purlin, the backing plate, the beam and the climbing beam component size database; second, automatic establishment of a table structure: the meter structure of each type of component is related to the number of openings in the depth and wide directions, when the central control unit transmits the parameter of the change of the number of openings to the component size data unit, the component size data unit automatically updates the meter structure of the beam size database table, the beam is arranged along the beam, the length of the third component is automatically written in, the length of each type of component is matched with the number of openings in the depth and wide directions and the width of the openings, the central control unit transmits the number of openings and the width of the openings to the component size data unit, and the length of each type of component of the component size data unit is automatically written into the purlin, the beam, the pad, the beam and the along-climbing beam size table.
ii. Automatic writing of the data in the rib database table: the rib is a hexagonal body which is distributed along the surface-widening direction of the model, so that the length of the rib is related to the number of openings and the width of the openings in the surface-widening direction, and when a project is newly built or modified each time, the central control unit transmits parameters of the width of the openings and the number of the openings in the surface-widening direction to the component size setting data unit, so that the automatic writing of the table data of the rib component size database is completed.
2. Computer automated assembly design principle
1. The dimensional change of the model is controllable and is not stepless. Including 5 dimensional changes: a face-widening direction, a depth direction, a vertical direction, a slope direction and a retraction direction. The change of the winding and unwinding directions is to control the whole shrinkage or amplification of the model according to the change of the size of the bucket opening by utilizing the change of the size of the bucket opening. The bucket mouth and bucket arch relation table of each item can be seen as a corresponding relation table of the item and bucket mouth bucket arch of the basic parameter table. Each item selection dimension is changed by selecting a drop-down box or a check box instead of manually inputting. Each dimensional change is within an allowable range. For example: the number of the gaps is larger than or equal to ﹦ and is larger than or equal to 3 and is less than ﹦; the number of bays must be odd; the method comprises the steps of carrying out a first treatment on the surface of the The opening width must be a multiple of the gallery width; the size of the bucket mouth is 12 types conventionally; the dimensions of the arches also define 4 species.
2. And the BIM plug-in platform prepares a plurality of entity files conforming to the change level for each type of component according to the controllable range of the model dimension. And in the model assembly process, reading different entity files of the BIM interface according to different change levels.
3. The model requires 3 files for automated assembly: a one-to-many component database table (evolved from a planar axis netlist), a vertical elevation database table, and a BIM entity file. For components such as columns which are arranged in the vertical direction, the installation position can be obtained through the X coordinate and the Y coordinate of a one-to-many component database table and through the upper skin and the lower skin of the vertical elevation database table; for a member such as a beam which is arranged in the horizontal direction, determining whether the member is arranged transversely or longitudinally according to X, Y coordinates of a one-to-many member database table, and obtaining an installation position according to the dimension of an epithelium and a hypodermis of a vertical elevation database table;
based on the principle of the invention, the invention designs an automatic assembling method of an ancient building model, which is based on an automatic assembling system of the ancient building model, and the system is described as follows:
an automatic assembling system of an ancient building model is shown in fig. 1, and comprises a component category defining unit, a basic control parameter setting unit, a plane axis network data unit, a vertical elevation data unit, a component size data unit, a BIM entity file reading unit, an automatic assembling unit, a model display unit and a central control unit; the central control unit is respectively connected with the component category definition unit, the basic control parameter setting unit, the plane axis network data unit, the vertical elevation data unit, the component size data unit, the BIM entity file reading unit, the automatic assembly unit and the model display unit in a bidirectional manner;
The basic control parameter setting unit sets control parameters according to a plurality of dimensions of the spatial variation of the historic building model; the central control unit controls the plane axis network data unit, the vertical elevation data unit and the component size data unit to synchronously change along with the change of basic control parameters; the automatic assembly unit reads the data of the database tables of the plane axis network data unit, the vertical elevation data unit and the component size data unit and reads BIM entity file data, and automatically completes the assembly of the model.
The basic control parameter setting unit includes: the basic operation unit is used for controlling the integral shrinkage or amplification of the model and is a bucket opening size setting table; a gap number and gap width setting table for controlling the lateral or longitudinal change of the model; a step size setting table and a lifting and folding coefficient setting table for controlling the change of the steepness of the model; the eave column through height setting table and the bracket setting table are used for controlling the vertical height of the model to change; and constructing a basic rule table by using the model of the space component for calibrating a certain coordinate point of the plane axis network.
As shown in fig. 3a to 3d, the opening amount setting table and the opening width setting table include the opening amount and the opening width in the broad direction or the length direction, the opening amount and the opening width in the depth direction or the width direction; the step size setting table takes the horizontal distance between two adjacent purlins in the slope direction of the ancient building model as a step length, and the lifting and folding coefficient setting table takes the ratio of the longitudinal distance to the horizontal distance between two adjacent purlins in the slope direction of the ancient building model as a lifting and folding coefficient, and when the steepness of the model needs to be changed, the step size setting table or the lifting and folding coefficient setting table can be modified as required; the eave column through height setting table and the bracket size setting table are used for calculating the net height of the eave column, the net height of the eave column is used as a standard for vertical change of the model, and the vertical change requirement of the model can be met by changing the net height of the eave column, matching with the step size setting table and the lifting and folding coefficient setting table.
The central control unit is used for transmitting parameters to the vertical elevation data unit, the plane axis network data unit and the component size data unit, and comprises a parameter transmitting unit used for automatically generating a vertical elevation database table, a parameter transmitting unit used for automatically generating a plane axis network database table and a parameter transmitting unit used for automatically generating a component size database table.
As shown in fig. 4, the vertical elevation data unit receives parameters transmitted by the central control unit and automatically generates a vertical elevation database table; the vertical elevation data unit is provided with a model installation sequence algorithm unit and a component elevation algorithm unit, and the model installation sequence algorithm unit automatically updates the installation sequence of the current model according to parameters transmitted by the central control unit; and the component elevation algorithm unit calculates the lower skin size and the upper skin size of various components of the vertical elevation database table respectively according to the installation sequence of the model installation sequence algorithm unit and parameters transmitted by the central control unit.
As shown in fig. 5a, the plane axis network data unit receives parameters transmitted by the central control unit and automatically generates a plane axis network database table; the plane axis network data unit establishes a plane axis network according to the top view of the ancient building model, and divides all components projected to the top view into M rows and N columns, so as to define X, Y coordinates of each intersection point on the axis network; the plane axis network data unit is provided with a row calculating unit, a column calculating unit, a row coordinate calculating unit, a column coordinate calculating unit and a coordinate point space component calibrating unit; the coordinate point space components are all components of the model space corresponding to the same coordinate point.
Supplementary explanation:fig. 7 to 13 are schematic views of building models, and fig. 13 is a plan view, which is an example of a wide open 5-room and a deep open 3-room. The top view is longitudinally 12 columns, the transverse direction is 9 rows, one row in the middle of the 9 rows is a ridge purlin, and the upper part, the lower part, the left part and the right part of the ridge purlin are various purlins and columns which are distributed in a shape like a Chinese character 'hui'. The purlins are taken as the middle to spread to the periphery, and are respectively 4 purlins which are distributed in a zigzag form (the outermost cornice purlin is not counted in, if 5 zigzag purlins are added, the purlins are divided from the middle according to the distance from the middle to the middle, and the 4 purlins which are distributed in a zigzag form are respectively an upper purlin, a lower purlin, an old cornice purlin and a normal purlin). Thus, 9 purlins are arranged in the direction of the broad face, and the four purlins which are arranged in the shape of the Chinese character 'hui' are respectively 4 purlins on the left and right in the depth direction, 8 purlins are arranged in total, and the difference is that the purlins are arranged on the left in the depth directionThere are also 4 beams in the middle of each of the 4 purlins on the right, so that, in top view, there are 12 columns in the depth direction and 9 rows in the broad direction, including the middle ridge purlins.
The top view of fig. 13 shows various purlins on the uppermost layer, and various corresponding model components below the purlins, and specific reference can be made to fig. 7-10.
As shown in fig. 6a to 6f, the component size data unit receives parameters transmitted by the central control unit, an automatic size calculating module, a purlin component size calculating module, a beam component size calculating module, a supporting ridge component size calculating module and a forward-pushing beam component size calculating module; the length sizes of various components are calculated by the number of the intervals and the width parameters transmitted by the central control unit, and the database table structure of the various components related to the number of the intervals is changed along with the change of the parameters of the number of the intervals; the component categories in the component size database table of purlin, backing plate, purlin, beam and parallel beam are transmitted by the central control unit; the dimensions of the components are the external dimensions of the components, including the tenon dimensions or the mortise dimensions for connection between the components.
Supplementary explanation:
the central control unit automatically judges the changes of the types of the components of the current purlin, the backing plate, the purlin, the beam and the forward-raking beam according to the changes of the number of the deep direction and the wide direction, and the judgment basis is as follows: the purlin is divided into a fixed part and a variable part, wherein the fixed part is a cornice purlin, a straight purlin and an old cornice purlin, the change is a gold purlin, if a 3-room is opened in the depth direction, the gold purlin is divided into an upper gold purlin and a lower gold purlin, and if a 5-room is opened in the depth direction, the gold purlin is divided into an upper gold, a middle gold and a lower gold; the backing plate, purlin and parallel girder matched with the purlin are also added into an upper gold backing plate, a middle gold backing plate and a lower gold backing plate; upper, middle, lower Jin Fang; an upper Jin Shunba beam, a middle Jin Shunba beam, and a lower Jin Shunba beam; the central control unit judges the number change of the beams according to the number change of the purlins: because purlin is the back font overall arrangement, when the quantity of gold purlin is 3 kinds, just 6 are gone back the font from top to bottom, and the old eaves purlin of adding is also gone back the font and is laid, and 2 are gone back from top to bottom to the old eaves purlin, has the back purlin in the middle of the depth direction, and 9 purlins altogether because the roof beam is born by the old eaves purlin, so the calculation of judging the roof beam is not participated in to the quantity of just taking over the eaves purlin. Similarly, when the number of the gaps in the depth direction is 7 and 9, according to the building rule of the ancient building, only the purlins are changed, and other purlins are unchanged.
The model building basic rule table defines space components of each coordinate point of the planar axis netlist when the number of the depth direction and the wide direction of the model changes according to the model building rule of the ancient building; the number of the openings in the depth direction and the wide direction of the model is defined as more than 3 and less than ﹦ 9, and the number of the openings is defined as an odd number; the model building basic rule table is provided with model building basic rule tables corresponding to the model building basic rule tables according to different opening numbers in the allowable range, and each model building basic rule table comprises ID numbers, rows, columns and coordinate point space components; the spatial components of each coordinate point of the planar axis netlist are arranged according to the assembly sequence of the model from low to high.
Supplementary explanation:the ranges of the numbers of the openings in the depth direction and the wide direction are 3, 5, 7 and 9, the arrangement and combination of the numbers of the openings in the depth direction and the wide direction are carried out according to the 4 ranges, a model building basic rule table is manufactured according to each combination condition, ID numbers, rows, columns and coordinate point space components are marked, and when the numbers of the openings in the depth direction and the wide direction of the model are changed, the corresponding model building basic rule table is searched to obtain the coordinate point space components on the current row and the current column.
And all basic control parameters except the bucket opening of the basic control parameter setting unit, the coordinate size of the plane axis network data unit, the elevation size of the vertical elevation data unit and the length, width and height of the component size data unit are calculated by taking the bucket opening size of the basic control parameter setting unit as a calculation unit.
Supplementary explanation:FIG. 12 is a schematic diagram of the size of a bucket opening, which is the width of one groove on the center line of the bucket arch.
As shown in fig. 5b, the planar axial network data unit is further provided with a one-to-many component generating unit: the one-to-many component generating unit distributes component category ID numbers to components at different positions in the vertical space of the same coordinate point, and inserts the components at different positions in the vertical space of the same coordinate point into the one-to-many component data table one by taking the current row, the current column and the component category ID numbers as unique numbers.
With the adoption of the automatic assembly system for the ancient building model, as shown in fig. 2, the invention designs an automatic assembly method for the ancient building model, which comprises the following steps:
the method comprises the following steps:
step one, setting five dimensions of the spatial variation of the model of the ancient building;
the five dimensions comprise a depth direction, a wide direction, a vertical direction, a slope direction and a shrinkage direction of the model;
Setting or adjusting basic control parameters according to five dimensions;
step three, automatically generating a vertical elevation database table according to relevant basic control parameters;
the specific process is as follows:
receiving parameters transmitted by a central control unit;
the transmitted parameters comprise the through height dimension of the eave column, the height and the jump-out distance of the bracket, various sizes of the walking frames of the walking frame size setting table, various lifting and folding coefficients of the lifting and folding coefficient setting table, the number of openings in the depth direction and the number of openings in the wide direction;
setting a component mounting sequence by the mounting sequence algorithm unit;
the installation sequence algorithm unit generates a component installation sequence database table according to the variable parameters of the quantity of the depth and wide directions and the building rule of the ancient building model, wherein the database table comprises an ID number, a component category name, a project name and an installation sequence, and the building rule of the ancient building model is as follows: the number of the openings in the depth direction is changed, so that the slope surface is changed and the length of the broad surface is unchanged; and if the number of the open areas in the broad face direction is changed, the length of the broad face is changed, the slope is unchanged, and the installation sequence algorithm unit automatically calculates the component category and the installation sequence of each condition of the model according to the rule.
Setting a component elevation algorithm by a component elevation algorithm unit;
the component elevation algorithm comprises a hypodermis algorithm and an epithelium algorithm of various components, and particularly comprises a hypodermis algorithm and an epithelium algorithm of columns, purlins, backing plates, purlins, piers, beams and climbing beams.
Generating a vertical elevation database table;
step four, automatically generating a plane shaft network database table according to relevant basic control parameters;
and step four, automatically generating a plane axis network database table, wherein the specific process is as follows:
receiving parameters transmitted by a central control unit;
the transmitted parameters comprise the number of the openings in the depth direction and the width of the openings in the wide direction;
secondly, automatically generating the number of columns of the shaft net according to the number of the openings in the wide direction;
the specific algorithm is as follows:
plane axis net column number = dynamic column + fixed column, the dynamic column comprises the number of open spaces in the broad face direction +1+ column number of gold purlins in the broad face direction; the fixed column of the plane axis net list=the column number between the broad direction pins, and the column number between the broad direction pins is fixed to be 2; the purlin is classified by gold words. For the conditions of deep opening of 3 rooms and wide opening of 5 rooms, the gold purlins are divided into an upper gold purlin and a lower gold purlin, and the number of the gold purlins is 2 columns respectively on the left and right sides in the wide direction, and 4 columns are altogether; if 5 rooms are opened in the depth direction, the purlin is an upper purlin, a middle purlin and a lower purlin.
Thirdly, automatically generating the number of lines of the shaft network according to the number of the gaps in the depth direction;
the specific algorithm is as follows:
plane axis net line number = dynamic line + fixed line, the dynamic line includes number +1 of depth direction intervals + column number-2 of depth direction purlin, the fixed line = column number of depth direction tips + column number of ridge purlin, column number of depth direction tips is fixed as 2, column number of ridge purlin is fixed as 1;
automatically generating Y coordinates of the axial network according to the width of the opening in the wide direction;
fifthly, automatically generating X coordinates of the shaft network according to the width of the gap in the depth direction;
according to the depth direction opening quantity and the face-widening direction opening quantity, searching a corresponding model building rule basic table, so as to obtain vertical components of each coordinate on the plane axis netlist, and storing the vertical components on coordinate point space component data items of the plane axis netlist in a character string form;
the method comprises the following specific steps:
i. reading the model construction rule basic table data, and obtaining a current coordinate point space component;
ii. Assigning a component category ID number to each component of the current coordinate point space component, wherein the component category ID number corresponds to the ID number of the vertical elevation database table one by one;
and (3) generating a coordinate point space component character string which consists of the component category ID numbers and the intervals Fu Pinjie of the current coordinate point space component, and storing the character string on a coordinate point space component data item of the plane axis network database table.
Step five, automatically generating a component size database table according to relevant basic control parameters;
step six, finishing the manufacture of the component entity by the BIM plug-in platform and saving the component entity as a component entity file;
establishing a correlation among the planar shaft network database table, the vertical elevation database table and the component entity table, and generating a one-to-many component table;
the specific process is as follows:
the method comprises the steps of obtaining a current coordinate point space component character string from a plane axis network data table;
intercepting the character string, and acquiring a component category ID number of each component of the current coordinate point;
thirdly, taking the current row, the current column and the component category ID number as unique numbers, and inserting components with different category ID numbers at the same coordinate point into a one-to-many component data table;
sorting the one-to-many component data table according to component types;
and fifthly, obtaining coordinates of the plurality of components in the same category in the plane axis netlist.
Step eight, the automatic assembly unit respectively reads the data of each table in the step seven to complete the automatic assembly of the current model;
the specific process is as follows:
reading component elevation data table data;
secondly, obtaining the ID number, the hypodermis size and the epithelium size of the current component to be assembled;
thirdly, obtaining each plane coordinate corresponding to the component category ID number from a one-to-many component data table;
Acquiring a BIM entity file corresponding to the component category ID number;
fifthly, assembling a model according to the dimension of the hypodermis, the dimension of the epithelium, the plane coordinates and the entity file of each type of component;
the assembly model comprises the following steps: when two model components are locked and connected, the computer judges whether the mutual distance between the two components enters a certain range, if so, the computer judges whether the heights and horizontal coordinates of the tenon part and the mortise part of the two components are consistent, and if so, the tenon part is moved into the mortise part, so that the locking and the connection of the two components are completed.
Step nine, whether the space dimension of the current model needs to be changed, if so, selecting the dimension of the model change, returning to the step two, and if not, ending the automatic assembly process;
the dimension of the selection model change comprises single selection or multiple selection.
In the first embodiment, the model width direction is increased by 2, and is changed from 5 to 7, while the dimension in the depth direction is not changed. The model of 12 columns and 9 rows of fig. 13 is used as a reference, and the broad direction is changed from the opening 5 to the opening 7 based on the model. According to the ancient building assembly rule, if only the open room is increased in the broad face direction and the open room is not increased in the depth direction, the slope is unchanged and the length is changed. Based on this rule, when the model only increases in the number of open face directions, the number of open face directions and the number of deep directions of purlins associated with the slope are unchanged. The only change is that the number of beams in the wide face direction is increased, the number of beams is increased by 2 due to the increase of 2 rooms, and the original 4 beams are changed into 6 beams, so that 14 columns are all arranged when 7 rooms are opened in the wide face direction, wherein 1-4 columns and 10-14 columns are all columns related to the slope, and the space components on each coordinate point of the part are unchanged from the original components. The change is that the columns of the load beams are increased from original 5, 6, 7, 8 to 5, 6, 7, 8, 9, 10, and the space components of each row on the 2 columns are unchanged although the 2 columns are increased. Taking the planar axis netlist of fig. 5a as an example: the rows of the 2 nd-8 th row are rows of the bearing beams, when the 5 th row is opened in the wide face direction by taking the 2 nd row as an example, the 5, 6, 7 and 8 th rows of the 2 nd row are columns of the bearing beams, after 7 th row is opened, the 5, 6, 7, 8, 9 and 10 th rows of the 2 nd row are changed into the rows of the bearing beams, and after 7 th row is opened, the 9-10 th rows of the 2 nd row are changed into the rows of the bearing beams, but the space components corresponding to the 9, 10 th rows of the 2 nd row are the '2-old eave column, 6-old eave column, 7-old eave pad, 9-old eave purlin and 10-seven frame beam' when 5 th rows are opened, and meanwhile, the space components corresponding to the 9-12 th rows of the original 2 nd row are moved to the 11-14 th rows of the 11-14 th rows, and the space components corresponding to the 11-14 th rows of the 2-old eave column, 6-old eave column, 7-old pad and 9-old purlin are moved.
For the changes that occur above, the solution of this embodiment is: the plane axis network data unit receives the parameters transmitted by the central control unit, recalculates the rows, columns and X, Y of the plane axis network database table, builds the data of the basic rule table by reading the model, and determines the space components on each coordinate point of the plane axis network database table.
In the second embodiment, the depth direction of the model is increased by 2, the 3 is changed into 5, and the dimension in the wide direction is not changed. The model of 12 columns and 9 rows of fig. 13 is used as a reference, and the depth direction is changed from 3 to 5 on the basis of the model.
According to the ancient building assembly rule, if only the depth direction increases the opening and the broad face direction does not increase the opening, the slope surface is changed and the length is unchanged.
Based on the rule, when the number of the intervals in the depth direction of the model is increased, the plane axis network database table, the vertical elevation database table and the component size database table are changed.
1. Changes in the planar axial network database table. First, the number and variety of 3 types of components are changed, purlins, beams and piers. The change of purlin drives the change of beam, the change of beam drives the change of beam pier.
One, purlin variation. As the slope changes, the direction of depth and the number of broad faces of purlins associated with the slope change. As the number of purlins in the depth direction is increased and the number of purlins among the tips in the wide direction is also increased by increasing the number of rooms 2, the original 7 purlins are changed into 9 purlins. Although the number of the open spaces in the broad face direction is unchanged, 1 purlin is added between the tips at two sides of the broad face direction, so that the number of broad face columns is increased from 12 columns to 14 columns, wherein 1-5 columns and 10-14 columns are columns related to the slope.
Second, beam variation. Since 7 purlins are changed into 9 purlins in the depth direction, the width of the depth direction is increased, the original 7-frame beam cannot support 9 purlins in length and only 7 purlins can be supported by the 7-frame beam due to the increase of the width, so that one 9-frame beam needs to be added below the 7-frame beam, as shown in fig. 13, the number of columns in the wide-face direction is increased but the total length is unchanged, the number of purlins is changed instead of the number of beams, the number of columns is unchanged, the number of columns is also 4, and 4 9-frame beams (the beams are through-length members) need to be added in the wide-face direction.
Third, variation of pier. The girder is located at the place where the girder is located. According to the design rule of the ancient building, the beams are supported by supporting objects, the distance between the beams is gradually increased from bottom to top, the supporting object with the shortest distance between the beams is generally called as a girder (according to the structures of 3, 5 and 7 girders, the supporting object between 7 and 5 is a pier, the supporting object between 5 and 3 is an upper Jin Guazhu, the supporting object between 3 girders and the supporting ridge of the top layer is a ridge melon column, the heights of the pier, the upper Jin Guazhu and the ridge melon column are gradually increased), and the newly increased 9 girders are positioned at the lowest layer, so the supporting object between the 9 girders and 7 girders is called as a pier. In order to distinguish the named effect of the newly added lump pier on the original lump pier, the lower girder between the 9 frame beams and the 7 frame beams is called a lower Jin pier, the lower girder between the 7 frame beams and the 5 frame beams is called a middle gold pier, the lower Jindun is above the nine frame beams, and the middle Jindun is above the seven frame beams.
And the components on the surface of the fourth and the plane shaft network databases and matched with the purlin are increased, such as the components of the backing plate, the purlin and the climbing beam are increased.
For the changes that occur above, the solution of this embodiment is: the plane axis network data unit receives the parameters transmitted by the central control unit, recalculates the rows, columns and X, Y of the plane axis network database table, builds the data of the basic rule table by reading the model, and determines the space components on each coordinate point of the plane axis network database table.
2. The component elevation data table also changes accordingly. Aiming at the change of the component elevation data table, the solution of the embodiment is as follows: the vertical elevation data unit receives parameters transmitted by the central control unit, corrects the algorithm of the model installation sequence algorithm unit, rearranges the installation sequence of the model, and recalculates the epithelium size and the epithelium size of various components according to the new installation sequence.
3. The component size database table also changes accordingly. Aiming at the change of the sizes of the components, the solution of the embodiment is as follows: for a change in the component type, the component type is updated by the central control unit transmitting parameters to the component size setting unit. Through the transmission parameters, the purlin is added in the purlin type component size meter component types, the medium gold backing plate is added in the backing plate type component size meter component types, and the medium gold purlin is added in the purlin type component size setting meter. For a change in the table structure, the parameter update table structure is transferred to the component size setting unit by the central control unit. A method of dynamically generating a table structure is adopted.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (4)
1. An automatic assembling method of an ancient building model is characterized by comprising the following steps:
step one, setting five dimensions of the spatial variation of the model of the ancient building;
the five dimensions comprise a depth direction, a wide direction, a vertical direction, a slope direction and a shrinkage direction of the model;
setting or adjusting basic control parameters according to five dimensions;
step three, automatically generating a vertical elevation database table according to relevant basic control parameters;
the specific process is as follows:
receiving parameters transmitted by a central control unit;
the transmitted parameters comprise the through height dimension of the eave column, the height and the jump-out distance of the bracket, various sizes of the walking frames of the walking frame size setting table, various lifting and folding coefficients of the lifting and folding coefficient setting table, the number of openings in the depth direction and the number of openings in the wide direction;
Setting a component mounting sequence by the mounting sequence algorithm unit;
the installation sequence algorithm unit generates a component installation sequence database table according to the variable parameters of the quantity of the depth and wide directions and the building rule of the ancient building model, wherein the database table comprises an ID number, a component category name, a project name and an installation sequence, and the building rule of the ancient building model is as follows: the number of the openings in the depth direction is changed, so that the slope surface is changed and the length of the broad surface is unchanged; the number of the openings in the broad face direction is changed, the length of the broad face is changed, the slope is unchanged, and the installation sequence algorithm unit automatically calculates the component category and the installation sequence of each condition of the model according to the rule;
setting a component elevation algorithm by a component elevation algorithm unit;
the component elevation algorithm comprises a lower skin algorithm and an upper skin algorithm of various components, and particularly comprises a lower skin algorithm and an upper skin algorithm of columns, purlins, backing plates, purlins, piers, beams and climbing beams;
generating a vertical elevation database table;
step four, automatically generating a plane shaft network database table according to relevant basic control parameters;
the specific process is as follows:
receiving parameters transmitted by a central control unit;
the transmitted parameters comprise the number of the openings in the depth direction and the width of the openings in the wide direction;
Secondly, automatically generating the number of columns of the shaft net according to the number of the openings in the wide direction;
thirdly, automatically generating the number of lines of the shaft network according to the number of the gaps in the depth direction;
the specific algorithm is as follows:
ii. Plane axis net line number = dynamic line + fixed line, the dynamic line includes number +1 of depth direction intervals + column number-2 of depth direction purlin, the fixed line = column number of depth direction tips + column number of ridge purlin, column number of depth direction tips is fixed as 2, column number of ridge purlin is fixed as 1;
automatically generating Y coordinates of the axial network according to the width of the opening in the wide direction;
fifthly, automatically generating X coordinates of the shaft network according to the width of the gap in the depth direction;
according to the depth direction opening quantity and the face-widening direction opening quantity, searching a corresponding model building rule basic table, so as to obtain vertical components of each coordinate on the plane axis netlist, and storing the vertical components on coordinate point space component data items of the plane axis netlist in a character string form;
the method comprises the following specific steps:
i. reading the model construction rule basic table data, and obtaining a current coordinate point space component;
ii. Assigning a component category ID number to each component of the current coordinate point space component, wherein the component category ID number corresponds to the ID number of the vertical elevation database table one by one;
Generating a coordinate point space component character string which consists of component category ID numbers and intervals Fu Pinjie of the current coordinate point space component, and storing the character string on a coordinate point space component data item of a plane axis network database table;
generating a planar axis network database table;
step five, automatically generating a component size database table according to relevant basic control parameters;
step six, finishing the manufacture of the component entity by the BIM plug-in platform and saving the component entity as a component entity file;
establishing a correlation among the planar shaft network database table, the vertical elevation database table and the component entity table, and generating a one-to-many component table;
the specific process is as follows:
the method comprises the steps of obtaining a current coordinate point space component character string from a plane axis network data table;
intercepting the character string, and acquiring a component category ID number of each component of the current coordinate point;
thirdly, taking the current row, the current column and the component category ID number as unique numbers, and inserting components with different category ID numbers at the same coordinate point into a one-to-many component data table;
sorting the one-to-many component data table according to component types;
fifthly, obtaining coordinates of a plurality of components in the same category in the plane axis netlist;
step eight, the automatic assembly unit respectively reads the data of each table in the step seven to complete the automatic assembly of the current model;
The specific process is as follows:
reading component elevation data table data;
secondly, obtaining the ID number, the hypodermis size and the epithelium size of the current component to be assembled;
thirdly, obtaining each plane coordinate corresponding to the component category ID number from a one-to-many component data table;
acquiring a BIM entity file corresponding to the component category ID number;
fifthly, assembling a model according to the dimension of the hypodermis, the dimension of the epithelium, the plane coordinates and the entity file of each type of component;
step nine, whether the space dimension of the current model needs to be changed, if so, selecting the dimension of the model change, returning to the step two, and if not, ending the automatic assembly process.
2. The method for automatically assembling an ancient building model according to claim 1, wherein:
the process automatically generates the column number of the shaft net according to the number of the openings in the wide direction, and the specific algorithm is as follows:
i. plane axis net column number = dynamic column + fixed column, the dynamic column comprises the number of open spaces in the broad face direction +1+ column number of gold purlins in the broad face direction; the fixed column of the plane axis net list=the column number between the broad direction pins, and the column number between the broad direction pins is fixed to be 2; the purlin is classified by gold words.
3. The method for automatically assembling an ancient building model according to claim 1, wherein: the process for carrying out the bathing comprises the following steps: when two model components are locked and connected, the computer judges whether the mutual distance between the two components enters a certain range, if so, the computer judges whether the heights and horizontal coordinates of the tenon part and the mortise part of the two components are consistent, and if so, the tenon part is moved into the mortise part, so that the locking and the connection of the two components are completed.
4. The method for automatically assembling an ancient building model according to claim 1, wherein: and step nine, selecting the dimension of the model change, including single selection or multiple selection.
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