CN112052497A - BIM-based pre-construction deep foundation pit simulation calculation method - Google Patents
BIM-based pre-construction deep foundation pit simulation calculation method Download PDFInfo
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- CN112052497A CN112052497A CN202010900762.2A CN202010900762A CN112052497A CN 112052497 A CN112052497 A CN 112052497A CN 202010900762 A CN202010900762 A CN 202010900762A CN 112052497 A CN112052497 A CN 112052497A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/10—Numerical modelling
Abstract
The invention relates to a BIM-based pre-construction deep foundation pit simulation calculation method, which carries out three-dimensional modeling on soil layer information of a deep foundation pit through geotechnical software; guiding a three-dimensional soil layer model into deep foundation pit software, modeling a deep foundation pit supporting structure on the basis of the soil layer model, performing stress calculation and structural deformation calculation on the deep foundation pit supporting structure model under different working conditions, and optimizing the excavation subsection layering working condition of the foundation pit, the arrangement of an earth outlet and the arrangement of monitoring points according to the calculation result; performing simulated pre-construction on the optimized deep foundation pit construction scheme; the advantages are that: the BIM technology is utilized to carry out three-dimensional modeling on rock-soil information and a deep foundation pit supporting structure, deep foundation pit calculation software is utilized to carry out simulation stress displacement calculation on all working conditions of the foundation pit supporting structure, technical and data support is provided for optimization of a foundation pit construction scheme, so that displacement and settlement of the actual construction supporting structure are within a simulation calculation range, construction progress is accelerated, and quality and safety are guaranteed.
Description
Technical Field
The invention relates to the technical field of deep foundation pit construction, in particular to a BIM-based pre-construction deep foundation pit simulation calculation method.
Background
The core of BIM (building information modeling) is that a model is used as a carrier, and various physical data and actual information of building design, construction and operation are integrated and displayed in a three-dimensional manner by using a digital technology, so that an information interaction cooperative working platform is provided for all parties participating in a building engineering project.
At present, in the construction of a deep foundation pit, a construction party mainly utilizes the characteristics of three-dimensional visualization, virtual construction and the like of a BIM technology to control and supervise the project progress and cost, so that a construction scheme, a technology bottom crossing and the like are clearer and more detailed, and errors and loopholes are reduced. For example, the knowledge of the construction personnel on the excavation scheme can be improved by using the three-dimensional model for bottom intersection; the excavation scheme is simulated by utilizing virtual construction, the hidden problem in the implementation process of the scheme can be accurately found out under the assistance of software, and the excavation details are optimized, so that the aims of shortening the construction period and improving the benefit are fulfilled; by utilizing the three-dimensional model, the accurate calculation of the engineering quantity of earth and stone excavation backfill can be improved, and the cost can be controlled.
However, the above applications have the following disadvantages: the three-dimensional model established by the construction party is based on foundation pit support drawing and data given by the design party, only plays a role in visualization of the three-dimensional model, mechanical simulation calculation analysis is not carried out on a supporting structure and rock soil, scheme optimization is only based on the construction period and allocation of labor force, machinery and materials, deep construction optimization is not carried out based on the overall dynamic stress change condition of the whole deep foundation pit construction process, and the scheme is generated based on the scheme.
Disclosure of Invention
The invention aims to provide a BIM-based pre-construction deep foundation pit simulation calculation method, which is used for performing simulation calculation on the overall dynamic stress change condition of the whole deep foundation pit construction process and providing technical and data support for the optimization of a deep foundation pit construction scheme.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a BIM-based method for simulating and calculating a deep foundation pit before construction comprises the following steps:
s1, performing three-dimensional modeling on soil layer surveying information of a deep foundation pit through geotechnical software to obtain a three-dimensional soil layer model;
s2, importing the three-dimensional soil layer model into deep foundation pit software, and modeling a deep foundation pit supporting structure system on the basis of the three-dimensional soil layer model according to deep foundation pit supporting design to obtain a foundation pit supporting structure design model;
s3, utilizing deep foundation pit software to perform stress calculation on the design model of the deep foundation pit supporting structure, calculating stress conditions of the deep foundation pit supporting structure and structural deformation data under different stress conditions, and performing construction optimization according to a simulation calculation result;
and S4, performing construction simulation on the adjusted and optimized deep foundation pit supporting construction scheme in BIM software, optimizing machinery, materials and labor force scheduling by combining with a field construction organization scheme, and performing simulated pre-construction.
Further, the step S3 further includes the following steps: and utilizing deep foundation pit software to carry out simulation calculation on the excavation working conditions according to the construction sequence, adjusting and optimizing the excavation subsection layering working conditions according to the calculation result, selecting the part with smaller stress deformation of the structure as a soil outlet, and adjusting and optimizing the excavation scheme according to the calculation result.
Further, the step S3 further includes the following steps: and optimizing the arrangement of monitoring points according to the calculation result of the excavation working condition, and intensively monitoring the position with larger displacement of the supporting structure in the simulation calculation.
The invention has the advantages that: the BIM technology is utilized to carry out three-dimensional modeling on rock-soil information and a deep foundation pit supporting structure system, deep foundation pit calculation software is utilized to carry out simulation stress and displacement calculation on all working conditions of the foundation pit supporting structure, technical and data support is provided for optimization of a foundation pit construction scheme, so that displacement and settlement of the actual construction supporting structure are within a simulation calculation range, construction progress is accelerated, and quality and safety are guaranteed. The construction of the deep foundation pit which is the most uncontrollable originally is mastered.
Drawings
FIG. 1 is a schematic flow chart of a scheme of the present invention in an example;
FIG. 2 is a schematic representation of a software interface for three-dimensional modeling of soil layer survey information in an embodiment;
FIG. 3 is a schematic software interface diagram for modeling a deep foundation pit supporting structure system in the embodiment;
FIG. 4 is a schematic diagram of a software interface for performing stress calculation on a foundation pit enclosure design model in the embodiment;
FIG. 5 is a schematic diagram of a software interface for simulation calculation of the excavation condition in the embodiment;
FIG. 6 is a schematic software interface diagram of the construction simulation performed in the BIM software in the embodiment.
Detailed Description
The present invention will be described in further detail with reference to examples.
The invention provides a BIM-based method for simulating and calculating a deep foundation pit before construction, which comprises the following steps of:
s1, performing three-dimensional modeling on soil layer surveying information of a deep foundation pit through geotechnical software to obtain a three-dimensional soil layer model;
s2, importing the three-dimensional soil layer model into deep foundation pit software, and modeling a deep foundation pit supporting structure system on the basis of the three-dimensional soil layer model according to deep foundation pit supporting design to obtain a foundation pit supporting structure design model;
s3, carrying out stress calculation on a design model of the deep foundation pit supporting structure by using deep foundation pit software, carrying out simulation calculation on each excavation working condition according to a construction sequence, calculating stress conditions of the deep foundation pit supporting structure under different working conditions and structural deformation data under different stress conditions, adjusting and optimizing the segmental and layered working conditions of excavation of the foundation pit according to a calculation result, selecting a part with smaller stress deformation of the structure as an earth outlet, optimizing the arrangement of monitoring points according to the calculation result, and carrying out reinforcement monitoring on a part with larger displacement of the supporting structure in the simulation calculation;
and S4, performing construction simulation on the adjusted and optimized deep foundation pit supporting construction scheme in BIM software, optimizing machinery, materials and labor force scheduling by combining with a field construction organization scheme, and performing simulated pre-construction.
The specific application is as follows:
the length of south and north of a deep foundation pit project is 88.5 meters, the width of east and west is 68.3 meters, the depth of excavation is-6.12 meters, the local part is-7.2 meters, the foundation pit is close to the red line of the land on the west side, the outside of the red line is a municipal road and a school, the depth of excavation is-2.8 to-14 meters is silty clay, and the foundation pit construction has a large risk of sedimentation displacement to the surrounding environment. The simulation calculation method of the embodiment is adopted before the deep foundation pit engineering is constructed, technical and data support is provided for the optimization of a construction scheme, the displacement and the settlement of an actual construction supporting structure are within the simulation calculation range, the progress is accelerated, the quality and the safety are ensured, and BIM software used by the engineering comprises positive geotechnical software, positive deep foundation pit software and sample PBIM field distribution software. The method specifically comprises the following steps:
as shown in fig. 2, firstly, a three-dimensional soil layer model is obtained by performing three-dimensional modeling on two-dimensional soil layer information by using a correct geotechnical software;
as shown in fig. 3, the generated three-dimensional soil layer model is introduced into a positive deep foundation pit management software, and a deep foundation pit support design is modeled on the basis of the soil layer model, wherein the foundation pit support of the engineering adopts an SMW construction method pile and a steel pipe internal support;
utilizing software for processing the deep and positive foundation pits to calculate the stress of the foundation pit enclosure design model, reasonably selecting a soil outlet according to the calculation result, and optimizing the construction of the part with larger stress of the structure, as shown in figure 4, the stress condition on the enclosure design model can be seen from the software;
the excavation working condition simulation calculation is carried out according to the excavation progress through the software for processing the positive deep foundation pit, the optimization excavation scheme is adjusted according to the calculation result, reasonable monitoring point arrangement optimization suggestions are provided for the deep foundation pit detection units, the key point with the larger displacement value is detected intensively, as shown in figure 5, the deformation state of the supporting structure can be seen when the excavation depth is 3.05 meters from the software, and the deformation state of the supporting structure of each depth node can be calculated according to the excavation progress so as to take optimization measures;
as shown in fig. 6, the adjusted and optimized deep foundation pit construction scheme is subjected to construction simulation in sample Pbim software, and simulated pre-construction is performed by combining progress, site construction organization, machinery, materials and labor force scheduling.
The above-mentioned embodiments are merely illustrative of the inventive concept and are not intended to limit the scope of the invention, which is defined by the claims and the insubstantial modifications of the inventive concept can be made without departing from the scope of the invention.
Claims (3)
1. A BIM-based method for simulating and calculating a deep foundation pit before construction is characterized by comprising the following steps:
s1, performing three-dimensional modeling on soil layer surveying information of a deep foundation pit through geotechnical software to obtain a three-dimensional soil layer model;
s2, importing the three-dimensional soil layer model into deep foundation pit software, and modeling a deep foundation pit supporting structure system on the basis of the three-dimensional soil layer model according to deep foundation pit supporting design to obtain a foundation pit supporting structure design model;
s3, utilizing deep foundation pit software to perform stress calculation on the design model of the deep foundation pit supporting structure, calculating stress conditions of the deep foundation pit supporting structure and structural deformation data under different stress conditions, and performing construction optimization according to a simulation calculation result;
and S4, performing construction simulation on the adjusted and optimized deep foundation pit supporting construction scheme in BIM software, optimizing machinery, materials and labor force scheduling by combining with a field construction organization scheme, and performing simulated pre-construction.
2. The BIM-based deep foundation pit simulation calculation method before construction according to claim 1, wherein the step S3 further comprises the following steps: and utilizing deep foundation pit software to carry out simulation calculation on the excavation working conditions according to the construction sequence, adjusting and optimizing the excavation subsection layering working conditions according to the calculation result, selecting the part with smaller stress deformation of the structure as a soil outlet, and adjusting and optimizing the excavation scheme according to the calculation result.
3. The BIM-based deep foundation pit simulation and calculation method before construction as claimed in claim 2, wherein the step S3 further comprises the steps of: and optimizing the arrangement of monitoring points according to the calculation result of the excavation working condition, and intensively monitoring the position with larger displacement of the supporting structure in the simulation calculation.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010900762.2A CN112052497A (en) | 2020-09-01 | 2020-09-01 | BIM-based pre-construction deep foundation pit simulation calculation method |
| DE112020003293.0T DE112020003293T5 (en) | 2020-09-01 | 2020-10-30 | BIM-based simulation calculation method for deep foundation construction before construction |
| PCT/CN2020/125048 WO2022047970A1 (en) | 2020-09-01 | 2020-10-30 | Bim-based method for simulated calculation of deep foundation pit before construction |
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| CN202010900762.2A CN112052497A (en) | 2020-09-01 | 2020-09-01 | BIM-based pre-construction deep foundation pit simulation calculation method |
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| CN202010900762.2A Pending CN112052497A (en) | 2020-09-01 | 2020-09-01 | BIM-based pre-construction deep foundation pit simulation calculation method |
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| DE (1) | DE112020003293T5 (en) |
| WO (1) | WO2022047970A1 (en) |
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| CN112854235A (en) * | 2020-12-31 | 2021-05-28 | 中铁建设集团基础设施建设有限公司 | Deep foundation pit supporting structure and stability monitoring and early warning system thereof |
| CN112926110A (en) * | 2021-01-22 | 2021-06-08 | 中铁广州工程局集团深圳工程有限公司 | Real-time visual early warning method for risks in construction process of subway station |
| CN113051801A (en) * | 2021-03-30 | 2021-06-29 | 广东汇涛工程科技有限公司 | Error analysis method for measuring horizontal displacement of deep layer of foundation pit by tilt angle sensor |
| CN113111411A (en) * | 2021-03-24 | 2021-07-13 | 湖南城市学院 | System and method for reinforcing deep silt foundation |
| CN113914386A (en) * | 2021-11-04 | 2022-01-11 | 中国市政工程西北设计研究院有限公司 | Intelligent monitoring method for deep foundation pit support safety based on BIM +3S technology |
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| CN113914386A (en) * | 2021-11-04 | 2022-01-11 | 中国市政工程西北设计研究院有限公司 | Intelligent monitoring method for deep foundation pit support safety based on BIM +3S technology |
| CN116561850A (en) * | 2023-04-21 | 2023-08-08 | 深圳市城市规划设计研究院股份有限公司 | BIM-based deep foundation pit inner box culvert protection construction method, device and storage medium |
| CN116561850B (en) * | 2023-04-21 | 2024-01-09 | 深圳市城市规划设计研究院股份有限公司 | BIM-based deep foundation pit inner box culvert protection construction method, device and storage medium |
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| Publication number | Publication date |
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| DE112020003293T5 (en) | 2022-05-19 |
| WO2022047970A1 (en) | 2022-03-10 |
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