A method and system for intelligently generating subway foundation pit bill of quantities based on BIM

Abstract

The present invention provides a method and system for intelligently generating a subway foundation pit engineering quantity list based on BIM. The method first builds three three-dimensional models, couples the three three-dimensional models to obtain a three-dimensional overall model, obtains various types of physical component data and various types of virtual component data after analysis and processing, and then establishes a mapping relationship between the physical component data and the virtual component data, and then summarizes the project feature information of various components, and interactively defines the project feature information in a centralized manner to obtain interactive results of various components, and then deducts the overlapping area of ​​the components in the three-dimensional overall model, and uses the deducted component data as the data to be output, and finally, imports and parses a standardized empty engineering quantity list, identifies each item to be filled in the empty engineering quantity list, and automatically fills in the form to generate a subway foundation pit engineering quantity list after obtaining the identification result. Compared with the prior art, the method of the present invention realizes the localization of BIM engineering quantity statistics and greatly improves the design efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of building information processing, and in particular relates to a method and system for intelligently generating a subway foundation pit bill of quantities based on BIM (Building Information Modeling). Background Art

[0002] The control of subway foundation pit construction cost is mainly achieved through the bill of quantities calculated in the design stage, which realizes economic comparison analysis and monitoring. Therefore, timely calculation and acquisition of the bill of quantities has extremely high practical value in actual engineering projects.

[0003] The current methods for calculating the subway bill of quantities are as follows:

[0004] In general, detailed engineering forward design parties first use CAD for two-dimensional design. Engineers use CAD to manually measure the relevant parameters of different components, summarize them in Excel and submit them to economic professionals. The economic professionals then perform in-depth manual processing on the summary table to obtain a bill of quantities. If BIM is used for three-dimensional subway structure design, the built three-dimensional building entity model can be used to manually query and count the project in the BIM software, and then manually summarize to obtain a bill of quantities. If it involves the assessment of foundation pit earthwork, it is difficult to assess geotechnical properties using traditional BIM software. Engineers need to make estimates based on the geological macro-situation and empirical methods, and then integrate the relevant data into the bill of quantities.

[0005] The above-mentioned means have the following defects:

[0006] 1. The method of obtaining the bill of quantities by forward design of subway foundation pit projects is relatively primitive, mainly relying on manual measurement and summary.

[0007] 2. The bill of quantities of each design unit is not tabulated in a unified manner, and no standardized assessment is conducted for specific areas and fields.

[0008] 3. The popularization and application of forward design using BIM-type three-dimensional application software is not widespread enough, and its bill of quantities generation also has major deficiencies. The engineering quantity items still need to be manually queried, counted, and calculated through project combinations before they can be applied. In addition, the engineering quantity statistics of mainstream BIM software at this stage mostly follow the detailed list of foreign physical quantity bills, which are completely unsuitable for the domestic bill pricing model in the field of municipal engineering and rail transit, and cannot be directly applied, and the degree of localization is too low.

[0009] 4. The BIM three-dimensional model of foundation pit engineering geology is mostly used for visual effect display. The BIM software has insufficient computing power and poor application ability in geotechnical mechanics. Its specific geotechnical property data is almost never used in the actual BIM forward design. The foundation pit earthwork project cannot be refined to the soil layer classification, which ultimately leads to inaccurate data in the generated bill of quantities. Summary of the invention

[0010] The present invention provides a method and system for intelligently generating a subway foundation pit bill of quantities based on BIM, which are used to solve the problems existing in the prior art.

[0011] In the first aspect, in order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0012] A method for intelligently generating a subway foundation pit bill of quantities based on BIM, comprising:

[0013] S1: Based on the design information, geotechnical investigation information and environmental monitoring information, build the foundation pit support 3D model, rock and soil geology 3D model and environmental information 3D model respectively;

[0014] S2: Unify the coordinate system and elevation system of the foundation pit support 3D model, rock and soil geology 3D model and environmental information 3D model, and couple them to obtain a 3D overall model;

[0015] S3: Analyze the solid components and the virtual components matching the solid components in the three-dimensional overall model to obtain various solid component data and various virtual component data respectively;

[0016] S4: Establish mapping relationships between various entity component data and various virtual component data;

[0017] S5: According to the mapping relationship, the project characteristic information of various components is summarized and interactively defined or confirmed in a centralized manner to obtain interactive results of various components;

[0018] Among them, the various components in step S5 include various physical components and various virtual components;

[0019] S6: According to the interactive results, the cross-overlapping areas between the solid component data, the cross-overlapping areas between the solid component data and the virtual component data, and the cross-overlapping areas between the virtual component data in the three-dimensional overall model are deducted, and the subtracted solid component data and virtual component data are used as the data to be output;

[0020] S7: importing and parsing the standardized empty bill of quantities, identifying the items to be filled in the empty bill of quantities, and obtaining the identification result;

[0021] S8: According to the identification results, all the data to be output are written into the corresponding items to be filled in the empty bill of quantities to generate a subway foundation pit bill of quantities.

[0022] Compared with the prior art, the method of the present invention is an automated method suitable for BIM software to identify, read and write standardized empty bills of quantities, which greatly improves the generation efficiency of subway foundation pit bills of quantities, realizes the unification of bill forms and project contents within the industry, and realizes the localization of BIM quantity statistics. In addition, the method of the present invention realizes the forward design of geotechnical characteristics in BIM by coupling the three-dimensional model of foundation pit support, the three-dimensional model of rock and soil geology, and the three-dimensional model of environmental information.

[0023] Preferably, after generating the subway foundation pit bill of quantities, the method of the present invention further comprises:

[0024] S100: Identify the list number corresponding to each component in the subway foundation pit engineering quantity list;

[0025] S101: Match and write into the comprehensive unit price column corresponding to the subway foundation pit engineering quantity list according to the full cost unit price database and the list number;

[0026] S102: Accumulate the amounts in all comprehensive unit price columns to obtain an accumulated value, and write it into the subway foundation pit engineering quantity list;

[0027] S103: Output the final project overview total price according to the tax ratio, and write it into the subway foundation pit project quantity list processed in step S102;

[0028] S104: Export the subway foundation pit bill of quantities with the final estimated total price of the project.

[0029] Preferably, if the solid component is a reinforced concrete component, the specific calculation formula for obtaining the weight of its steel bars is:

[0030] ∑T i =∑V i ·P i (1)

[0031] Among them, ∑V i represents the total volume of the i-th reinforced concrete component, P i represents the steel content of the i-th reinforced concrete component, ∑T i represents the total weight of steel bars in the i-th reinforced concrete component.

[0032] Preferably, the physical components in step S3 include at least retaining ground-connected walls, foundation pit retaining structures, foundation pit excavation plane contours, ground surfaces, final foundation pit bottom surfaces, retaining structure guide walls, retaining walls, retaining crown beams, waist beams, supports, supporting temporary columns and column piles, drainage wells, foundation reinforcement bodies, foundation bearing piles and structural pull-out piles.

[0033] Preferably, the virtual components corresponding to the ground-anchored wall construction include a grooving and grabbing structure, a grooving and rock entering structure, a wall slag chiseling and removal structure, and a monitoring pipe embedded structure.

[0034] Preferably, the mapping relationship between the retaining ground connecting wall and the groove grabbing structure is:

[0035] ∑V1=∑V1 j +V1' (2)

[0036] V1'=∑S1 j ·h j (3)

[0037] Among them, the total volume of the groove structure is ∑V1, and the solid volume of the ground-connected wall is ∑V1 j , the virtual volume from the ground surface to the top of the ground-connected wall is V1', ∑S1 j is the plane projection area of ​​all wall sections of the jth enclosure wall, h j It is the height from the top of the jth retaining wall to the ground surface.

[0038] Preferably, the mapping relationship between the retaining ground connection wall and the trenching rock structure is:

[0039] V2'=∑V2 k (4)

[0040] Where V2' is the volume of the trough-rock structure, ∑V2 k It is the sum of the volumes of each section of the retaining ground diaphragm wall in the moderately weathered and slightly weathered rock strata in the three-dimensional rock and soil strata.

[0041] Preferably, the mapping relationship between the enclosure ground connection wall and the embedded monitoring pipe structure is:

[0042] Lc=∑n·l m (6)

[0043] Where Lc is the total length of the embedded monitoring pipe structure, n is the number of embedded pipes in a single wall, l m is the length of a single detection tube, ∑n·l m It is the sum of the lengths of the embedded measuring tubes in all wall sections.

[0044] In the second aspect, in order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0045] A system for intelligently generating a subway foundation pit bill of quantities based on BIM, comprising:

[0046] A 3D model building module is used to build a foundation pit support 3D model, a rock and soil geology 3D model and an environmental information 3D model respectively according to design information, geotechnical survey information and environmental monitoring information;

[0047] The 3D overall model coupling module is used to unify the coordinate system and elevation system of the foundation pit support 3D model, the rock and soil geology 3D model and the environmental information 3D model, and couple them to obtain the 3D overall model;

[0048] The model data analysis module is used to analyze the physical components and the virtual components matching the physical components in the three-dimensional overall model, and obtain various types of physical component data and various types of virtual component data respectively;

[0049] A mapping relationship establishment module is used to establish mapping relationships between various entity component data and various virtual component data;

[0050] The interactive module is used to summarize the project characteristic information of various components according to the mapping relationship, and interactively define or confirm the project characteristic information in a centralized manner to obtain interactive results of various components; wherein the various components in the interactive module include various physical components and various virtual components;

[0051] A cross-overlap deduction module is used to deduct the cross-overlapping areas between various entity component data, the cross-overlapping areas between various entity component data and various virtual component data, and the cross-overlapping areas between various virtual component data in the three-dimensional overall model according to the interactive results, and use the subtracted entity component data and virtual component data as data to be output;

[0052] The identification result generation module is used to import and parse the standardized empty bill of quantities, identify the items to be filled in the empty bill of quantities, and obtain the identification result;

[0053] The list generation module is used to write all the data to be output into the corresponding items to be filled in the empty list of engineering quantities according to the identification results, so as to generate the subway foundation pit engineering quantity list.

[0054] In the third aspect, in order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0055] A computer device includes an internal memory, a processor, a non-volatile storage medium, and a computer program stored in the non-volatile storage medium and executable on the processor. When the processor executes the computer program, the method for intelligently generating a subway foundation pit bill of quantities based on BIM is implemented.

[0056] The present invention has at least the following advantages:

[0057] 1) Compared with the prior art, the method of the present invention is an automated method suitable for BIM software to identify, read and write standardized empty bills of quantities, which greatly improves the generation efficiency of subway foundation pit bills of quantities, realizes the unification of bill forms and project contents within the industry, and realizes the localization of BIM quantity statistics. In addition, the method of the present invention realizes the forward design of geotechnical characteristics in BIM by coupling the foundation pit support three-dimensional model, the rock and soil geological three-dimensional model and the environmental information three-dimensional model, solves the problem of omissions in the calculation of project quantities, and reduces the error rate of calculation results.

[0058] 2) Compared with the prior art, the system of the present invention has built-in the above-mentioned method for intelligently generating subway foundation pit bill of quantities based on BIM, which meets the requirements of conventional open-cut subway foundation pit support engineering. With the help of this system, errors caused by insufficient experience of engineers can be reduced. Relevant basic data such as solid and virtual components are directly obtained from the three-dimensional model, and the engineering quantity results are automatically statistically derived, which greatly improves efficiency and accuracy; and solves the problem that the existing BIM technology cannot solve due to the failure to establish a model in the virtual component model. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0060] Figure 1 This is a flow chart of steps S1-S6 of a method for intelligently generating a subway foundation pit bill of quantities based on BIM in Embodiment 1 of the present invention;

[0061] Figure 2 This is a flow chart of steps S7-S8 of a method for intelligently generating a subway foundation pit bill of quantities based on BIM in Embodiment 1 of the present invention;

[0062] Figure 3 This is a schematic diagram of the structure of a system for intelligently generating a subway foundation pit bill of quantities based on BIM in Embodiment 2 of the present invention;

[0063] Figure 4 It is a schematic diagram of the structure of the computer device in the third embodiment of the present invention. DETAILED DESCRIPTION

[0064] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0065] This embodiment discloses a method, system and computer equipment for intelligently generating a subway foundation pit bill of quantities based on BIM, which are used to solve the problems existing in the prior art.

[0066] Embodiment 1

[0067] like Figure 1 and Figure 2 As shown, this embodiment discloses a method for intelligently generating a subway foundation pit bill of quantities based on BIM, the method comprising:

[0068] S1: Based on the design information, geotechnical investigation information and environmental monitoring information, build the foundation pit support three-dimensional model, rock and soil geological three-dimensional model and environmental information three-dimensional model respectively.

[0069] It should be explained that the above-mentioned three-dimensional model of foundation pit support includes the three-dimensional models of all solid components of foundation pit support, among which some solid components are reinforced concrete structures. The reinforced concrete component models corresponding to these solid components should simultaneously build the reinforcement models of their components. The reinforcement models can be built based on the standard cross-section reinforcement schemes of various components, or by setting the steel content P of various reinforced concrete components, that is, according to the unit volume steel weight (tons / cubic) of various components. In this embodiment, the geotechnical three-dimensional model is built based on the geotechnical survey information in the two-dimensional geotechnical survey report. In other embodiments, the geotechnical three-dimensional model can also use historical geotechnical survey information or historical geotechnical three-dimensional models. It should be explained that the geotechnical three-dimensional model includes all the soil layers revealed by the drilling holes on the site, the spatial geological layers of each soil layer, and the three-dimensional surface. The outer plane of the three-dimensional geological model should at least include the excavation range of the foundation pit, and the foundation pit depth should not be less than the maximum depth of the retaining structure piles, the structural bearing piles, and the foundation pit reinforcement body. The three-dimensional model of environmental information refers to the bottom or underground structure that is closely related to the foundation pit and requires engineering monitoring, demolition, or protection measures. It also includes the environmental monitoring structure and protection structure around the foundation pit that are related to the foundation pit engineering costs.

[0070] S2: Unify the coordinate system and elevation system of the foundation pit support 3D model, rock and soil geology 3D model and environmental information 3D model, and couple them to obtain a 3D overall model.

[0071] In this embodiment, in order to achieve the coupling of the three-dimensional overall model, the coordinate and elevation system of the foundation pit support three-dimensional model is used as a reference, and the coordinate and elevation systems of the environmental information three-dimensional model and the rock and soil geological three-dimensional model are adjusted until they are the same as the coordinate and elevation systems of the foundation pit support three-dimensional model. At this time, the three sets of models are coupled in one coordinate system.

[0072] Compared with the prior art, the three-dimensional overall model obtained by step S2 is more in line with the actual engineering situation. The three-dimensional model contains more comprehensive relevant information and can effectively reduce information omissions in subsequent calculation processes.

[0073] S3: Analyze the solid components and the virtual components matching the solid components in the three-dimensional overall model to obtain various solid component data and various virtual component data respectively.

[0074] In this embodiment, the physical components include at least foundation pit supporting structures (such as ground-anchored walls, supporting piles and water-stop curtains, etc.), foundation pit excavation plane contours, ground surface, final foundation pit bottom surface, retaining structure guide walls, retaining walls, retaining crown beams, waist beams, supporting parts (such as anchor rods and anchor cables), supporting temporary columns and column piles, drainage wells, foundation reinforcement bodies, foundation bearing piles and structural pull-out piles.

[0075] In this embodiment, virtual components refer to necessary projects that affect engineering costs during the implementation of physical components. Their structures are not reflected in the form of model entities in the BIM model, nor in various horizontal and cross-sectional drawings of general design results. They are mainly reflected in non-intuitive forms such as explanatory text descriptions or index atlases. Virtual components include at least temporary formwork structures, engineering monitoring structures, empty pile structures, and earthwork structures.

[0076] It should be noted that the entity component data at least includes size data, area, volume and weight. If the entity component is a steel component, its entity component data must also include the separate weight data of local components such as steel lattice columns, steel supports and steel waist beams, so as to facilitate the local force analysis of the model. At the same time, if the entity component is a reinforced concrete component, it is necessary to analyze the reinforcement schemes of various reinforced concrete components and calculate the weight of the steel bars of each reinforced concrete component separately, or calculate the weight of the steel bars according to the volume and steel content of the reinforced concrete component. The specific calculation formula is:

[0077] ∑T i =∑V i ·P i (1)

[0078] Among them, ∑V i represents the total volume of the i-th reinforced concrete component, P i represents the steel content of the i-th reinforced concrete component, ∑T irepresents the total weight of steel bars in the i-th reinforced concrete component.

[0079] In combination with the above formula (1), in order to further explain the technical solution, the following example is provided:

[0080] Taking a retaining ground-connected wall entity as an example, after the three-dimensional model of the foundation pit support is built and the ground-connected wall and each wall are reinforced in detail, the volume of all entities of the retaining ground-connected wall is automatically counted as ∑V i , automatically calculate the plane projection area of ​​all solid walls as ∑S i , and then calculate the total weight of the steel bars of the component ∑T according to the reinforcement scheme of the retaining ground-connected wall i Or use the interactive definition method to record the steel content P of the i-th reinforced concrete component i The total weight of steel bars ∑T is calculated using formula (1): i .

[0081] S4: Establish mapping relationships between various types of entity component data and various types of virtual component data.

[0082] Specifically, according to the physical component data and virtual component data parsed in step S3, a mapping relationship between each physical component and the corresponding virtual component can be established by manual interaction or a predefined method, and the mapping conditions include project association relationship and mapping algorithm rules.

[0083] Preferably, a standardized mapping algorithm built into the system is used, followed by manual confirmation or modification, to reduce the workload of manual interaction.

[0084] Similarly, taking the retaining ground-connected wall and its corresponding virtual components as an example, the virtual components involved in the construction of the ground-connected wall include the groove grabbing structure, the groove entering rock structure, the wall slag chiseling structure and the monitoring pipe pre-buried structure, etc. These virtual components will eventually affect the actual construction costs. Among them, the mapping elements associated with the groove formation of the ground-connected wall include the types of process machinery and equipment used, such as crawler hydraulic grabs and groove milling machines.

[0085] Among them, the mapping relationship between the retaining ground-connected wall and the virtual component includes:

[0086] The mapping relationship between the retaining ground-connected wall and the trenching structure:

[0087] ∑V1=∑V1 j +V1' (2)

[0088] V1'=∑S1 j ·h j (3)

[0089] Among them, the total volume of the groove structure is ∑V1, and the solid volume of the ground-connected wall is ∑V1 j, the virtual volume from the ground surface to the top of the ground-connected wall is V1', ∑S1 j is the plane projection area of ​​all wall sections of the jth enclosure wall, h j It is the height from the top of the jth retaining wall to the ground surface.

[0090] Mapping relationship between retaining diaphragm wall and trenching rock structure:

[0091] V2'=∑V2 k (4)

[0092] Where V2' is the volume of the trough-rock structure, ∑V2 k is the sum of the volumes of each wall section of the retaining ground diaphragm wall in the moderately weathered and slightly weathered rock strata of the three-dimensional rock and soil strata, ∑V2 k The rock stratum boundary can be queried by the system matching the method of the present invention, and the corresponding volume cut by the vertical wall can be summed up to obtain the volume.

[0093] Mapping relationship between retaining ground-connected wall and wall slag removal structure:

[0094] V3'=∑S1 j ·hx (5)

[0095] Among them, V3' is the volume of the wall slag chiseling structure, and hx is the slag thickness of the wall slag chiseling structure, which is generally a default value of 0.5m and can be modified through manual interaction.

[0096] The mapping relationship between the retaining ground wall and the embedded monitoring pipe structure:

[0097] Lc=∑n·l m (6)

[0098] Where Lc is the total length of the embedded monitoring pipe structure, n is the number of embedded pipes in a single wall (according to the specification requirements, the system can default to 5 pipes and be confirmed or modified through manual interaction), l m is the length of a single detection tube, ∑n·l m It is the sum of the lengths of the embedded measuring tubes in all wall sections.

[0099] It should be noted that the mapping relationships between other physical components and corresponding virtual components are roughly the same. Some physical components do not need to be grooved or width-set, and some mapping relationships can be removed. Basically, they are all deformations of the mapping relationships in the above formulas (1)-(6), and will not be described one by one here.

[0100] S5: According to the mapping relationship, the project characteristic information of each component is summarized and interactively defined or confirmed in a centralized manner to obtain interactive results of each component.

[0101] In this embodiment, the above-mentioned various components refer to various physical components and various virtual components.

[0102] Still taking the same retaining ground diaphragm wall as an example, after the mapping processing of formulas (1)-(6) in step S3 and step S4, the project characteristic information of the retaining ground diaphragm wall can be summarized, such as the size, volume, weight and total volume of the corresponding trenching and grabbing structure of the retaining ground diaphragm wall. On this basis, further definition or confirmation is required manually or automatically based on these project characteristic information. For example: (1) According to the project name of "retaining ground diaphragm wall", define or confirm the material information of the diaphragm wall, and bind or annotate it with information, such as the concrete grade is C35 underwater premixed soil, and the impermeability grade is P8; (2) I-beam joints are used between the wall widths of the retaining ground diaphragm wall, and the specifications of the I-beam are defined as 660×400×10 (unit: mm); (3) The trenching process and machinery of the crawler hydraulic grab bucket are interactively determined during the construction of the retaining ground diaphragm wall. Through the above interactive definition or determination, the supporting system will automatically generate the above definition or confirmation results, and the corresponding engineering quantity is statistically obtained as the interactive result.

[0103] Similarly, if the crown beam is enclosed as an example, the detailed steps of step S5 are:

[0104] According to the project name of "enclosing crown beam", interactively confirm the material information of the enclosing crown beam, such as the concrete grade is C30 premixed concrete and poured on site, and then confirm the construction method of the enclosing crown beam. In this embodiment, the crown beam is constructed by 1:1 slope excavation. In other embodiments, steel sheet piles are used as temporary support. The casting process of the crown beam uses wooden formwork, which is set up with double-sided tension. The height of the formwork is the same as the height of the crown beam. The template area engineering quantity is automatically counted and used as an interactive result.

[0105] S6: According to the interactive results, the cross-overlapping areas between each entity component data, the cross-overlapping areas between each entity component data and each virtual component data, and the cross-overlapping areas between each virtual component data in the three-dimensional overall model are deducted, and the deducted entity component data and virtual component data are used as the data to be output.

[0106] For ease of understanding, step S6 takes the mixing piles (solid components) for foundation pit reinforcement as an example, such as the foundation reinforcement measures of Φ850@600 three-axis mixing piles. Since the pile bodies are interlocked with each other, the cement parameter calculation is based on the single pile area × the number of piles, and the total area after the two adjacent mixing piles are deducted is calculated, and the subtracted solid component data is output.

[0107] If it is necessary to calculate the data of the physical components after deducting the retaining ground-anchored wall, after the ground-anchored wall is cast, it is required to perform simulation deduction on the guide walls on both sides thereof. The demolition work adopts the simulation processing of slope excavation and backfilling, and the guide wall located on the inside of the foundation pit is simulated and deducted simultaneously during the excavation of the foundation pit. In the actual project, only the outside of the retaining ground-anchored wall requires additional calculation of the engineering quantity. At this time, it is necessary to specify and set the overlapping scope or content of the cross-work of foundation pit excavation and guide wall demolition excavation, and the excavation engineering quantity on the inside of the retaining ground-anchored wall is classified into the scope of foundation pit excavation and is not included in the statistical scope to avoid duplicate statistics.

[0108] S7: Import and parse the standardized empty bill of quantities, identify the items to be filled in the empty bill of quantities, and obtain the identification results.

[0109] In this embodiment, the method of the present invention uses a matching system to call a standardized empty bill of quantities.

[0110] S8: According to the identification results, all the data to be output are written into the corresponding items to be filled in the empty bill of quantities to generate a subway foundation pit bill of quantities.

[0111] Specifically, through the identification results, the project name, category and keywords in the project feature description in the empty bill of quantities are captured, and the text keywords are matched with the project names of various physical components and virtual components of the three-dimensional overall model. At the same time, the engineering measurement unit is checked, and the data that meets the project feature description, project name and to-be-output data are written into the corresponding items to be filled in the empty bill of quantities to generate the bill of quantities. Finally, the bill of quantities is exported for subsequent use.

[0112] Steps S1-S8 of the present invention belong to an automated method suitable for BIM software to identify, read and write a standardized empty bill of quantities, and have the following technical effects:

[0113] (1) The method of the present invention achieves industry-wide unification, and the resulting bill of quantities has a unified and standardized project name, a number that matches the industry bill quota, a project feature description, and project calculation statistics rules and methods. In addition, the method of the present invention is easy to recognize by computers, and can effectively solve the problems of omissions and inconsistent content in project quantity calculations, greatly reducing the error rate.

[0114] (2) The system can have a built-in unified mapping relationship that prioritizes engineering quantity calculation standards, which meets the requirements of conventional open-cut subway foundation pit support engineering and reduces errors caused by insufficient engineer experience. The method of the present invention fully obtains the relevant basic data of physical components and virtual components directly from the three-dimensional model, and automatically derives the engineering quantity results, which greatly improves efficiency and accuracy, and solves the problem that the existing BIM technology cannot solve because the virtual components have not been modeled.

[0115] After the above step S8, the method of the present invention further comprises:

[0116] S100: Identify the list number corresponding to each component in the subway foundation pit engineering quantity list;

[0117] S101: Match and write into the comprehensive unit price column corresponding to the subway foundation pit engineering quantity list according to the full cost unit price database and the list number;

[0118] S102: Accumulate the amounts in all comprehensive unit price columns to obtain an accumulated value, and write it into the subway foundation pit engineering quantity list;

[0119] S103: Output the final project overview total price according to the tax ratio, and write it into the subway foundation pit project quantity list processed in step S102;

[0120] S104: Export the subway foundation pit bill of quantities with the final estimated total price of the project.

[0121] Through the above technical scheme, the present invention further utilizes computer intelligent identification of project features and list numbers to automatically calculate engineering construction costs, which not only realizes standardization, but also can quickly and intuitively grasp the engineering construction costs of the scheme, which is beneficial to the cost management in the process and the economic comparison of the real-time scheme.

[0122] Embodiment 2

[0123] like Figure 3 As shown, based on the first embodiment, this embodiment discloses a system for intelligently generating a subway foundation pit bill of quantities based on BIM, the system comprising:

[0124] A 3D model building module is used to build a foundation pit support 3D model, a rock and soil geology 3D model and an environmental information 3D model respectively according to design information, geotechnical survey information and environmental monitoring information;

[0125] The 3D overall model coupling module is used to unify the coordinate system and elevation system of the foundation pit support 3D model, the rock and soil geology 3D model and the environmental information 3D model, and couple them to obtain the 3D overall model;

[0126] The model data analysis module is used to analyze the physical components and the virtual components matching the physical components in the three-dimensional overall model, and obtain various types of physical component data and various types of virtual component data respectively;

[0127] A mapping relationship establishment module is used to establish mapping relationships between various entity component data and various virtual component data;

[0128] The interactive module is used to summarize the project characteristic information of various components according to the mapping relationship, and interactively define or confirm the project characteristic information in a centralized manner to obtain interactive results of various components; wherein the various components in the interactive module include various physical components and various virtual components;

[0129] A cross-overlap deduction module is used to deduct the cross-overlapping areas between various entity component data, the cross-overlapping areas between various entity component data and various virtual component data, and the cross-overlapping areas between various virtual component data in the three-dimensional overall model according to the interactive results, and use the subtracted entity component data and virtual component data as data to be output;

[0130] The identification result generation module is used to import and parse the standardized empty bill of quantities, identify the items to be filled in the empty bill of quantities, and obtain the identification result;

[0131] The list generation module is used to write all the data to be output into the corresponding items to be filled in the empty list of engineering quantities according to the identification results, so as to generate the subway foundation pit engineering quantity list.

[0132] Embodiment 3

[0133] like Figure 4 As shown, this embodiment discloses a computer device, which includes an internal memory, a processor, a non-volatile storage medium, and a computer program stored in the non-volatile storage medium and executable on the processor. When the processor executes the computer program, the method for intelligently generating a subway foundation pit bill of quantities based on BIM in Embodiment 1 is implemented.

[0134] It can be understood by those skilled in the art that all or part of the steps of the above-mentioned embodiments can be implemented by hardware related to program instructions. The above-mentioned program can be stored in a computer-readable storage medium. When the program is executed, the steps of the above-mentioned method embodiment are executed. The above-mentioned storage medium includes: ROM, RAM, magnetic disk or optical disk, etc., various media that can store program codes.

[0135] For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all of these changes and deformations should fall within the protection scope of the claims of the present invention.

Claims

1. A method for intelligently generating a subway foundation pit bill of quantities based on BIM, characterized in that: include: S1: Based on the design information, geotechnical investigation information and environmental monitoring information, build the foundation pit support 3D model, rock and soil geology 3D model and environmental information 3D model respectively; S2: unifying the coordinate system and elevation system of the foundation pit support three-dimensional model, the rock and soil geological three-dimensional model and the environmental information three-dimensional model, and coupling them to obtain a three-dimensional overall model; S3: parsing the solid components in the three-dimensional overall model and the virtual components matched with the solid components to obtain various types of solid component data and various types of virtual component data respectively; S4: Establishing mapping relationships between various types of entity component data and various types of virtual component data; S5: Summarize the project characteristic information of various components according to the mapping relationship, and interactively define or confirm the project characteristic information in a centralized manner to obtain interactive results of various components; Among them, the various components in step S5 include various physical components and various virtual components; S6: According to the interactive result, deduct the cross-overlapping area between each entity component data, the cross-overlapping area between each entity component data and each virtual component data, and the cross-overlapping area between each virtual component data in the three-dimensional overall model, and use the deducted entity component data and virtual component data as the data to be output; S7: importing and parsing a standardized empty bill of quantities, identifying each item to be filled in the empty bill of quantities, and obtaining an identification result; S8: According to the identification result, all the data to be output are written into the corresponding items to be filled in the empty bill of quantities to generate a subway foundation pit bill of quantities; The physical components in step S3 at least include retaining ground connecting walls, foundation pit retaining structures, foundation pit excavation plane contours, ground surface, final foundation pit bottom surface, retaining structure guide walls, retaining walls, retaining crown beams, waist beams, supports, supporting temporary columns, column piles, precipitation wells, foundation reinforcement bodies, foundation bearing piles and structural anti-pullout piles; The virtual components corresponding to the construction of the retaining ground-connected wall include a grooving and grasping structure, a grooving and rock entering structure, a wall slag chiseling and removal structure, and a monitoring pipe pre-buried structure; The mapping relationship between the retaining ground connecting wall and the groove grabbing structure is: ΣV1=ΣV1 j +V1' (2) V1’=ΣS1 j ·h j (3) Among them, the total volume of the trench structure is ∑V1, and the volume of the surrounding ground-connected wall is ∑V1 j , the virtual volume from the ground surface to the top of the retaining wall is V1', ∑S1 j is the plane projection area of ​​all wall sections of the jth enclosure wall, h j is the height from the top of the jth retaining wall to the ground surface; The mapping relationship between the retaining ground connection wall and the trenching rock structure is: <h2 style=";text-align:left;direction:ltr">V2' = ΣV2<h2 style=";text-align:left;direction:ltr"> k <h2 style=";text-align:left;direction:ltr"> (4) Where V2' is the volume of the trough-rock structure, ∑V2 k It is the sum of the volumes of each wall section of the retaining ground diaphragm wall in the moderately weathered and slightly weathered rock layers of the three-dimensional rock and soil strata; The mapping relationship between the enclosure ground connection wall and the monitoring pipe embedded structure is: Lc=∑n·l m (6) Where Lc is the total length of the embedded monitoring pipe structure, n is the number of embedded pipes in a single wall, l m is the length of a single detection tube, ∑n·l m It is the sum of the lengths of the embedded measuring tubes in all wall sections.

2. The method for intelligently generating a subway foundation pit bill of quantities based on BIM according to claim 1 is characterized in that: After generating the subway foundation pit bill of quantities, the method further includes: S100: Identify the list number corresponding to each component in the subway foundation pit engineering quantity list; S101: Match and write into the comprehensive unit price column corresponding to the subway foundation pit engineering quantity list according to the full cost unit price database and the list number; S102: Accumulate the amounts in all comprehensive unit price columns to obtain an accumulated value, and write the accumulated value into the subway foundation pit engineering quantity list; S103: Output the final project overview total price according to the tax ratio, and write it into the subway foundation pit project quantity list processed in step S102; S104: Export the subway foundation pit bill of quantities with the final estimated total price of the project.

3. The method for intelligently generating a subway foundation pit bill of quantities based on BIM according to claim 1 is characterized in that: If the solid component is a reinforced concrete component, the specific calculation formula for obtaining the weight of its steel bars is: ΣT i =ΣV i ·P i (1) Among them, ∑V i represents the total volume of the i-th reinforced concrete component, P i represents the steel content of the i-th reinforced concrete component, ∑T i represents the total weight of steel bars in the i-th reinforced concrete component.

4. A system for intelligently generating subway foundation pit bill of quantities based on BIM, characterized in that: include: A 3D model building module is used to build a foundation pit support 3D model, a rock and soil geology 3D model and an environmental information 3D model respectively according to design information, geotechnical survey information and environmental monitoring information; A three-dimensional overall model coupling module is used to unify the coordinate system and elevation system of the foundation pit support three-dimensional model, the rock and soil geological three-dimensional model and the environmental information three-dimensional model, and couple them to obtain a three-dimensional overall model; A model data analysis module, used to analyze the physical components in the three-dimensional overall model and the virtual components matched with the physical components, and obtain various types of physical component data and various types of virtual component data respectively; A mapping relationship establishment module, used to establish mapping relationships between various types of entity component data and various types of virtual component data; An interactive module is used to summarize the project characteristic information of various components according to the mapping relationship, and interactively define or confirm the project characteristic information in a centralized manner to obtain interactive results of various components; wherein the various components in the interactive module include various physical components and various virtual components; A cross-overlap deduction module is used to deduct the cross-overlapping areas between the solid component data, the cross-overlapping areas between the solid component data and the virtual component data, and the cross-overlapping areas between the virtual component data in the three-dimensional overall model according to the interactive result, and use the subtracted solid component data and virtual component data as the data to be output; An identification result generation module is used to import and parse the standardized empty bill of quantities, identify the items to be filled in the empty bill of quantities, and obtain an identification result; A list generation module is used to write all the data to be output into the corresponding items to be filled in the empty list of engineering quantities according to the identification result, so as to generate a subway foundation pit engineering quantity list; The entity components in the built-in steps of the model data analysis module at least include retaining ground connecting walls, foundation pit retaining structures, foundation pit excavation plane contours, ground surface, final foundation pit bottom surface, retaining structure guide walls, retaining walls, retaining crown beams, waist beams, supports, supporting temporary columns, column piles, precipitation wells, foundation reinforcement bodies, foundation bearing piles and structural anti-pullout piles; The virtual components corresponding to the construction of the retaining ground-connected wall include a grooving and grasping structure, a grooving and rock entering structure, a wall slag chiseling and removal structure, and a monitoring pipe pre-buried structure; The mapping relationship between the retaining ground connecting wall and the groove grabbing structure is: ΣV1=ΣV1 j +V1' (2) V1’=ΣS1 j ·h j (3) Among them, the total volume of the trench structure is ∑V1, and the volume of the surrounding ground-connected wall is ∑V1 j , the virtual volume from the ground surface to the top of the retaining wall is V1', ∑S1 j is the plane projection area of ​​all wall sections of the jth enclosure wall, h j is the height from the top of the jth retaining wall to the ground surface; The mapping relationship between the retaining ground connection wall and the trenching rock structure is: <h2 style=";text-align:left;direction:ltr">V2' = ΣV2<h2 style=";text-align:left;direction:ltr"> k <h2 style=";text-align:left;direction:ltr"> (4) Where V2' is the volume of the trough-rock structure, ∑V2 k It is the sum of the volumes of each wall section of the retaining ground diaphragm wall in the moderately weathered and slightly weathered rock layers of the three-dimensional rock and soil strata; The mapping relationship between the enclosure ground connection wall and the monitoring pipe embedded structure is: Lc=∑n·l m (6) Where Lc is the total length of the embedded monitoring pipe structure, n is the number of embedded pipes in a single wall, l m is the length of a single detection tube, ∑n·l m It is the sum of the lengths of the embedded measuring tubes in all wall sections.

5. A computer device, characterized in that: It includes an internal memory, a processor, a non-volatile storage medium, and a computer program stored in the non-volatile storage medium and executable on the processor. When the processor executes the computer program, it implements the method for intelligently generating a subway foundation pit bill of quantities based on BIM as described in any one of claims 1 to 3.

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