CN115238343B - BIM technology-based intelligent construction method for foundation pit support - Google Patents
BIM technology-based intelligent construction method for foundation pit support Download PDFInfo
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Abstract
The invention discloses an intelligent construction method for a foundation pit support based on a BIM technology, which comprises the following steps: establishing a foundation pit support intelligent analysis system, wherein a foundation pit support parameterized BIM component family library and a database of an intelligent algorithm are arranged in the foundation pit support intelligent analysis system; identifying a bottom elevation central line of a foundation pit and a geological layer of a geological survey report, and carrying out intelligent analysis; setting basic support parameters; generating a supporting structure model, a construction drawing and a detailed table by one key according to the set supporting basic parameters; checking whether the generated model meets the requirements, and if the model needs to be modified, resetting the model for setting the basic support parameters until the model meets the requirements; the intelligent construction method for the foundation pit support based on the BIM technology is simple to operate, is suitable for intelligent support analysis and rapid modeling of various foundation pit projects, provides data support for engineering design and construction, and has high popularization value.
Description
Technical Field
The invention relates to an intelligent construction method for a foundation pit support based on a BIM technology.
Background
In the current common technology of foundation pit engineering, each project needs to manually establish two-dimensional drawing analysis or manually establish a foundation pit support model according to the data of the project to provide reference, and the method has long time, large workload and low working efficiency. And the system is lack of intelligent analysis and high in modeling efficiency.
The invention discloses a method for quickly constructing a foundation pit pile-anchor supporting structure based on a BIM (building information modeling) technology in Chinese patent application No. 202010727383.8, and discloses a technical scheme for establishing a pile-anchor supporting member family library, inputting foundation pit information and dividing regions, customizing pile-anchor unit parameters, establishing a pile-anchor supporting structure, checking and adjusting a model and generating a complete model. In the technology, a large amount of information needs to be input, manual content setting and manual adjustment operations are more, time consumption is long, no component detail table or component poor contact geological report exists, and automatic modeling is low.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the intelligent construction method for the foundation pit support based on the BIM technology, which is simple in operation, suitable for intelligent support analysis and rapid modeling of various foundation pit projects, provides data support for engineering design and construction and has higher popularization value.
A foundation pit support intelligent construction method based on a BIM technology comprises the following steps:
establishing a foundation pit support intelligent analysis system, wherein a foundation pit support parameterized BIM component family library and a database of an intelligent algorithm are arranged in the foundation pit support intelligent analysis system;
identifying a bottom elevation central line of a foundation pit and a geological layer of a geological survey report, and carrying out intelligent analysis;
setting basic support parameters;
generating a supporting structure model, a construction drawing and a detailed table by one key according to the set supporting basic parameters;
and checking whether the generated model meets the requirements, and if the model needs to be modified, resetting the basic support parameters until the model meets the requirements.
Preferably, the method for building the foundation pit support parameterized BIM component family library comprises the following steps: and establishing all components of the type of the foundation pit supporting structure, wherein the components comprise a component family library of the enclosure structure and a component family library of the supporting structure, and the component family library is parameterized according to the characteristic definitions of the size, specification and style of the component structure.
Preferably, the method of the database with the built-in intelligent algorithm comprises the following steps: based on the design calculation rule of the foundation pit supporting structure and the applicable conditions of the foundation pit supporting structure in different geology and different depths, the rule is embedded into the intelligent analysis system of the foundation pit supporting structure to form an intelligent algorithm database.
Preferably, the method for identifying the elevation center line of the foundation pit bottom comprises the following steps: extracting excel data of an xyz coordinate of an elevation center line of the bottom of the foundation pit or a route in a CAD format, automatically grouping the segments of the introduced center line according to embedded support rules, the distance between the ground and the depth of the foundation pit and geological layer distribution conditions after the extraction of the excel data or the route in the CAD format into an intelligent analysis system of foundation pit support, and dividing the center line into a plurality of segments according to different elevation and geological conditions.
Preferably, the method for identifying geological strata reported from a geological survey comprises: according to the extracted geological survey report geological stratum distribution excel data, importing the data into a foundation pit support intelligent analysis system to identify the excel data, generating a simulated geological stratum distribution model, naming the classified geological stratum names in the identified geological information by the foundation pit support intelligent analysis system, and carrying out color division.
Preferably, the identified geological information of the geological stratum of the geological survey report is highlighted and displayed by color for the unfavorable geology which needs attention during construction or the geology which needs to be guided.
Preferably, the setting method of the basic support parameters comprises the following steps: and further distributing support piles suitable for the section intervals according to a plurality of sections divided by the center line of the bottom elevation of the foundation pit, selecting the type of the support structure, and automatically analyzing parameters of the bottom elevation, the top elevation, the ground average elevation and the pile length of the foundation pit in the section area after the selection is completed.
Preferably, the method for generating the supporting structure model and the construction drawing by one key comprises the following steps: according to the line segment condition divided by the elevation center line of the bottom of the foundation pit, when the division is multi-line segments, a curved supporting structure model is generated based on the distribution of the multi-line segments, and when the division is single-line segments, a straight supporting structure model is directly generated, and meanwhile, a corresponding construction drawing is generated.
Preferably, the method for generating the support structure detail list by one key comprises the following steps: and generating a detail list based on a curved supporting structure model generated by multi-line section distribution and a straight supporting structure model generated by a single-line section, wherein the detail list comprises supporting structure system component information of supporting piles, water stop piles, cross beams, waist beams and crown beams, and information of codes, specifications, lengths, widths, thicknesses and elevations of each component as a project amount statistical table.
Preferably, the detail table codes the position where the corresponding model is located, a certain member in the detail table is clicked, direct indexing is carried out to jump to the visual position of the three-dimensional model of the member, unfavorable geology displayed in highlight colors or geology needing to be guided into a hole is selected according to the visual position of the three-dimensional model of the member, and a detail report containing the depth where the karst cave is located and the specific xyz coordinate data position is generated.
According to the scheme, the geological layer data is reported according to the identification geological survey, the depth and the geological distribution condition of the position of the center line are intelligently analyzed according to the identification of the elevation center line of the bottom of the foundation pit, and the system automatically selects the proper supporting structure type. Basic parameters of the foundation pit support are further input into a parameter setting interface of the database, and a BIM model and a construction drawing of the foundation pit support are generated by one key; manual repeated operation is reduced, a forward design chart is realized, and the drawing is ensured to be more suitable for construction; the contact between the supporting pile and the unfavorable geological layer not only highlights a visual part on the model, but also generates a report containing information such as an actual position xyz coordinate, a depth, a picture and the like, provides important reference data for unfavorable geological construction, effectively saves the cost and shortens the construction period; and generating a component detail list of the support piles, the water stop piles, the cross beams, the waist beams, the crown beams and the like, wherein the component detail list comprises the attributes such as the codes, the specifications, the lengths, the widths, the elevations and the like of each component and the engineering quantity information, and is convenient for component positioning, engineering quantity statistics and material purchase. When the regional optimization model of the adjusting part is checked, the detail table is automatically and synchronously updated. The automatic intelligent analysis is better, and the beneficial application of the information technology in the technical field of engineering is further promoted.
The invention has the beneficial effects that:
1. the problems that manual modeling is needed according to design drawings in a traditional modeling mode of foundation pit engineering, operation is complex, time consumption is high, and intelligent analysis is insufficient are solved; 2. the modeling mode is simplified, the BIM model and the construction drawing are generated by parameterizing one key, the visualization effect is good, and the operation of designers is simplified; 3. and a detailed report of unfavorable geology and a detailed component list are generated after intelligent analysis, so that the problems of purchasing of construction unit engineering quantity inventory materials and guiding the construction of the unfavorable geology supporting pile are solved, the construction period is shortened, and materials and cost are saved.
Drawings
FIG. 1 is a geological formation distribution model diagram;
FIG. 2 is a drawing of a import interface;
FIG. 3 is a diagram of an intelligent analysis support line interface;
FIG. 4 is a diagram of the setting of foundation pit support parameters;
FIG. 5 is a diagram of setting common parameters of the foundation pit support;
FIG. 6 is a diagram of a model of a support structure generated by multiple segments respectively;
FIG. 7 is a diagram of a single line segment generated model of a supporting structure;
FIG. 8 is a detail illustration of the classification of the various elements of the supporting structure;
fig. 9 is a detailed illustration of classification of each component of the supporting structure.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth to illustrate, but are not to be construed to limit the scope of the invention. The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Examples
1.1, establishing a foundation pit support parameterized BIM component family library, wherein the foundation pit support parameterized BIM component family library comprises all components of a foundation pit support structure type, such as steel sheet piles, cast-in-place piles, SMW construction method piles and other family libraries of a building enclosure structure; the supporting structure comprises a surrounding purlin, a cross brace, a steel pipe, a stand column and other accessory components. The component family library is parameterized according to the feature definitions of component structure size, specification, style and the like, so that basic parameter information can be conveniently input, and model components with corresponding specifications can be automatically generated.
1.2 database of powerful Intelligent algorithms
According to relevant regulations and design requirements of two standards of building foundation design Specifications GB 50007-2011 and building foundation pit support technical Specification JGJ120-2012, extracting design calculation rules of a foundation pit support structure and applicable conditions of the foundation pit support structure in different geology and different depths, and embedding the rules into a system to form an intelligent algorithm database.
2.1 importing the excel data of the geological layer distribution of the extracted geological survey report into the foundation pit support intelligent analysis system in the step 1, identifying the excel data by the system, and generating a simulated geological layer distribution model, wherein the three-dimensional geological layer visualization effect is visual as shown in the figure 1. The system can identify geological information classification geological stratum names and divide colors, such as plain soil layers, sand layers, silty clay, karst caves and the like.
And 2.2, intelligently grouping line segments after identifying the elevation center line of the bottom of the foundation pit. Extracting excel data of an xyz coordinate of a bottom elevation center line of the foundation pit, importing the excel data into the foundation pit support intelligent analysis system in the step 1, importing the bottom elevation center line of the foundation pit as an import route option in the step 2, automatically grouping line segments of the imported center line according to an embedded support rule, mainly according to the distance between the ground and the depth of the foundation pit and the geological formation distribution condition, and regularly dividing the center line into a plurality of line segments according to different elevations and geological conditions.
In addition, the elevation center line of the foundation pit bottom can also be directly imported into a CAD format route besides excel data import. The CAD lines are grouped into line segments by the embedded supporting rule to obtain a plurality of line segments
2.3 the geological information identified in step 2.1, including the unfavorable geology to be noticed for construction or the geology needing to be guided into the hole, can be selected from the interface of fig. 2, such as the unfavorable geological cavern and the slightly weathered limestone needing to be guided into the hole. Detailed reporting preparations are made for the support structure to come into contact with these geology.
And 3, setting basic support parameters. Clicking a certain line segment divided in the step 2.2, further distributing support piles suitable for the line segment interval by the system, popping out an intelligent analysis support line interface in the graph 3, displaying the support structure type of an intelligent analysis result, adjusting if needed, selecting other support structure types in the support setting in the graph 3, entering a foundation pit support parameter interface in the graph 4 and the graph 5 after determining, and automatically analyzing parameters such as the bottom elevation, the top elevation, the ground average elevation, the pile length and the like of the foundation pit in the line segment area. Other parameters of the foundation pit support, such as the width of the foundation pit, the number of cross brace tracks, the center distance of the support piles, whether the bottom is reinforced and the like, need to be input.
Furthermore, the foundation pit surrounding environment model can be guided into the geological model, when a building exists in a certain area line segment of the center line of the foundation pit, the system can automatically recognize the support of the cast-in-place pile to protect the surrounding building, and the sinking or collapse accidents of the surrounding building caused by excavation of the foundation pit due to insufficient strength of other support types are avoided.
And 4, after the basic support parameters are set in the step 3, determining one key to generate a support structure model and issuing a construction drawing to achieve forward design. As shown in fig. 6 and 7. Fig. 6 is a model diagram of the line segments divided by the centerline analysis in the step 2.2, and fig. 7 is a model of the region where the single line segment is identified and the bottom of the region also reinforces the pile foundation. And meanwhile, generating a detailed list which comprises the information of supporting structure system components such as supporting piles, water stop piles, cross beams, waist beams, crown beams and the like, and further the information of codes, specifications, lengths, widths, thicknesses, elevations and the like of each component. The method can be used as a project quantity statistical table, construction material purchasing and construction resource planning arrangement are facilitated, wherein the position of the detail table code corresponding to the model is clicked, and a component in the detail table can be directly indexed and jumped to the visual position of the three-dimensional model of the component.
In the setting in step 2.3, the three-dimensional model is visualized at the moment, the highlighting color shows that the support piles are in geological contact with the unfavorable geological cavern, and the detail report which is generated in the same way contains the depth of the cavern and the specific xyz coordinate data position, and can be derived as shown in fig. 8 and 9.
And 5, checking the model generated in the step 4, if the model meets the requirements, further modifying and adjusting the model if necessary, returning to the step 3 to support the basic parameter setting, and readjusting part of parameters until the model meets the requirements. The model and the detail list do not need to be completely regenerated by the system, and after the adjustment model of the detail area is complete, the contents of the detail list, the report and the like are automatically updated, so that the system running time of the computer is reduced.
And 6, organizing and constructing.
The invention has the beneficial effects that:
the problems of complex operation, more consumed time and insufficient intelligence of the traditional modeling mode of the foundation pit engineering are solved, the modeling and construction drawing is generated by one key, the visualization effect is good, the operation of designers is simplified, detailed tables facilitate the statistics of the engineering quantity and the material purchase, the working efficiency is improved, the geological report with poor component contact provides important reference for construction, the cost is effectively saved, and the construction period is shortened.
The above-described embodiments of the present invention are not intended to limit the scope of the present invention, and the embodiments of the present invention are not limited thereto, and various other modifications, substitutions and alterations can be made to the above-described structure of the present invention without departing from the basic technical concept of the present invention as described above, according to the common technical knowledge and conventional means in the field of the present invention.
Claims (4)
1. A foundation pit support intelligent construction method based on a BIM technology is characterized by comprising the following steps:
establishing an intelligent analysis system for the foundation pit support, wherein a database of a parameterized BIM component family and an intelligent algorithm for the foundation pit support is built in the intelligent analysis system;
identifying a bottom elevation central line of a foundation pit and a geological layer of a geological survey report, and carrying out intelligent analysis;
setting basic support parameters;
generating a supporting structure model, a construction drawing and a detailed table by one key according to the set supporting basic parameters;
checking whether the generated model meets the requirements, and if the model needs to be modified, resetting the model for setting the basic support parameters until the model meets the requirements;
the method for internally arranging the foundation pit support parameterized BIM component family library comprises the following steps: establishing all components of the type of the foundation pit supporting structure, including a component family library of the enclosure structure and a component family library of the supporting structure, wherein the component family library is parameterized according to the characteristic definitions of the size, specification and style of the component structure;
the method of the database with the built-in intelligent algorithm comprises the following steps: based on the design calculation rule of the foundation pit supporting structure and the applicable conditions of the foundation pit supporting structure in different geology and different depths, embedding the rule into an intelligent analysis system of the foundation pit supporting to form an intelligent algorithm database;
the method for identifying the elevation center line of the foundation pit bottom comprises the following steps: extracting excel data of an xyz coordinate of a bottom elevation center line of a foundation pit or a route in a CAD format, automatically grouping segments of the introduced center line according to embedded support rules, the distance between the ground and the depth of the foundation pit and geological layer distribution conditions after the excel data or the route is introduced into an intelligent analysis system of the foundation pit support, and dividing the center line into a plurality of segments according to different elevation and geological conditions;
the method for identifying geological layers of the geological survey report comprises the following steps: according to the extracted geological survey report geological stratum distribution excel data, importing the data into a foundation pit support intelligent analysis system for identifying the excel data, generating a simulated geological stratum distribution model, naming the classified geological stratum names in the identified geological information by the foundation pit support intelligent analysis system, and carrying out color division;
the setting method of the basic parameters of the support comprises the following steps: further distributing support piles suitable for line section intervals according to a plurality of line sections divided by the center line of the bottom elevation of the foundation pit, selecting the type of a support structure, and automatically analyzing parameters of the bottom elevation, the top elevation, the ground average elevation and the pile length of the foundation pit in the line section area after the selection is completed;
the method for generating the supporting structure model and the construction drawing by one key comprises the following steps: according to the line segment condition divided by the elevation center line of the bottom of the foundation pit, when the division is multi-line segments, a curved supporting structure model is generated based on the distribution of the multi-line segments, and when the division is single-line segments, a straight supporting structure model is directly generated, and meanwhile, a corresponding construction drawing is generated.
2. The intelligent construction method for foundation pit support based on BIM technology as claimed in claim 1, wherein in the geological information identified by geological strata of the identified geological survey report, the unfavorable geology to be noticed by the construction or the geology needing to be guided into the hole is highlighted and displayed.
3. The intelligent construction method for foundation pit support based on BIM technology as claimed in claim 1, wherein the method for generating the support structure detail list by one key is as follows: and generating a detail list based on a curved supporting structure model generated by multi-line section distribution and a straight supporting structure model generated by a single-line section, wherein the detail list comprises supporting structure system component information of supporting piles, water stop piles, cross beams, waist beams and crown beams, and information of codes, specifications, lengths, widths, thicknesses and elevations of each component as a project amount statistical table.
4. The BIM technology-based intelligent construction method for foundation pit support according to claim 3, wherein the detail table codes correspond to the position of the model, a member in the detail table is clicked, direct indexing is carried out to jump to the visual position of the three-dimensional model of the member, according to the visual position of the three-dimensional model of the member, unfavorable geology displayed in highlight colors or geology needing cave introduction is selected, and a detail report containing the depth of the karst cave and the specific xyz coordinate data position is generated.
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