CN110469348B - BIM technology-based underground tunnel large curve turning steel grid arrangement method - Google Patents
BIM technology-based underground tunnel large curve turning steel grid arrangement method Download PDFInfo
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- CN110469348B CN110469348B CN201910807915.6A CN201910807915A CN110469348B CN 110469348 B CN110469348 B CN 110469348B CN 201910807915 A CN201910807915 A CN 201910807915A CN 110469348 B CN110469348 B CN 110469348B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 84
- 239000010959 steel Substances 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000005516 engineering process Methods 0.000 title claims abstract description 28
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 22
- 238000013461 design Methods 0.000 claims abstract description 18
- 239000004567 concrete Substances 0.000 claims abstract description 6
- 238000007689 inspection Methods 0.000 claims abstract description 6
- 238000010586 diagram Methods 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 3
- 238000005457 optimization Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 description 9
- 238000010276 construction Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007123 defense Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/152—Laggings made of grids or nettings
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Abstract
The invention discloses a BIM technology-based steel grating arrangement method for a large curve turning part of an underground excavated tunnel, which comprises the following steps: establishing a BIM (building information modeling) underground tunnel large curve primary support structure model, and extracting parameters according to a steel grating reinforcing steel bar and foot plate layout at a turning part; drawing a steel grating steel bar model at the turning; guiding all models to Fuzor software, attaching steel grating steel bar models to the primary support structure models according to concrete protection layer parameters and the design intervals of steel gratings at the designed turning positions, and respectively performing soft collision inspection on each steel grating at the turning positions, the steel gratings and the primary support structures; and (4) carrying out optimized position adjustment on the distances among the grid nodes, the foot plates and the grid arrangement, which are checked out to cause the position conflict of the steel grids at the large curve position due to the arrangement according to the design drawing, until the steel grids at the large curve position are not influenced mutually, and determining the grid arrangement distance, the grid nodes and the foot plate arrangement. The invention reduces the times of grid processing rework so as to ensure the implementation in the aspects of cost control and quality optimization.
Description
Technical Field
The invention relates to the field of control of primary steel grid grids at large curve bends of subway tunnels, in particular to a BIM technology-based arrangement method of steel grid grids at large curve bends of underground excavated tunnels.
Background
At present, grid nodes at turning positions of the underground excavated tunnel are arranged by cad, and only grid main ribs are arranged in the arrangement mode, whether the arrangement of the grid nodes is reasonable or not is not considered, the technology that the BIM technology is fused with the design and arrangement positions of the turning grids of the underground excavated tunnel is few and few, most of objects of the current BIM technology for checking component conflict are mainly arranged by electromechanical synthesis, and the fineness of steel bars needed when the steel bars are used as the objects is higher.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a BIM technology-based method for arranging steel grating at the large-curve turning position of an underground tunnel, and the design management and control efficiency can be greatly improved by combining the steel bar conflict inspection process of the large-curve turning steel grating with BIM, so that the cost is saved, and the project construction period is shortened.
The technical scheme of the invention is as follows: a BIM technology-based steel grating arrangement method for large curve turning of an underground tunnel comprises the following steps:
establishing a BIM underground tunnel large curve primary support structure model by using Autodesk Revit modeling software, and extracting related technical parameters according to a steel grid reinforcing steel bar and foot plate layout at a turning;
according to the extracted parameters, drawing a steel grating reinforcing steel bar model at the turning by using Autodesk Revit modeling software;
exporting the primary support structure model and the steel grating reinforcing steel bar model to Fuzor software, attaching the steel grating reinforcing steel bar model to the primary support structure model according to concrete protective layer parameters and design turning steel grating design intervals, and respectively carrying out soft collision conflict inspection on each steel grating at a turning, the steel grating and the primary support structure;
and (4) carrying out optimized position adjustment on the distances among the grid nodes, the foot plates and the grid arrangement, which are checked out to cause the position conflict of the steel grids at the large curve position due to the arrangement according to the design drawing, until the steel grids at the large curve position are not influenced mutually, and determining the grid arrangement distance, the grid nodes and the foot plate arrangement.
The invention further improves the method for arranging the steel grating at the large curve turning part of the underground tunnel based on the BIM technology, and the method also comprises the following steps after the arrangement distance of the grating, the arrangement of the grating nodes and the arrangement of the foot plates are determined: and (4) deriving a grid layout diagram, deriving an analysis report according to the grid layout diagram, analyzing the conflict reason and modifying and optimizing.
The method for arranging the steel grating at the large-curve turning part of the underground excavated tunnel based on the BIM technology is further improved in that the primary support structure model comprises the thickness of the primary support, the axial arrangement of the primary support at the turning part, the length of the primary support model, the height of the primary support model and the arch crown radian of the primary support structure.
The invention further improves the arrangement method of the steel grating at the large-curve turning part of the underground excavated tunnel based on the BIM technology, wherein relevant technical parameters extracted according to the steel grating reinforcing steel bars and the foot plate arrangement drawing at the turning part comprise the radian of the grating reinforcing steel bars, the arrangement position of the foot plate, the type of the reinforcing steel bars, the size of the foot plate, the arrangement position of reinforcing ribs and the distance between the grating reinforcing steel bars.
Due to the adoption of the technical scheme, the invention has the beneficial effects that: according to the method, the Fuzor software platform is used for conflict check, the conflict between steel grating arrangement and grating nodes at a large curve can be solved, the conflict position is optimized, and the positive effect of preventing quality control in advance is achieved. The problem of big curve department steel grating arrange according to the design and lead to the grid node conflict each other more, on-the-spot adjustment steel grating leads to the steel grating to assemble the quality relatively poor, reduces the influence to the quality to can promote the application innovation of BIM technique in subway construction.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 shows concrete operation steps of steel grating nodes at a turning of a large curve of an underground tunnel based on a BIM technology and an arrangement conflict and optimized arrangement method in an embodiment of the present invention.
Fig. 2 is a diagram showing a specific embodiment of steel grating nodes at a large curve of an underground tunnel based on the BIM technology and a method for confliction and optimal arrangement.
FIG. 3 is a schematic diagram of a transfer channel used in an embodiment of the present invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
At present, grid nodes at turning positions of the underground excavated tunnel are arranged by cad, and only grid main ribs are arranged in the arrangement mode, whether the arrangement of the grid nodes is reasonable or not is not considered, the technology that the BIM technology is fused with the design and arrangement positions of the turning grids of the underground excavated tunnel is few and few, most of objects of the current BIM technology for checking component conflict are mainly arranged by electromechanical synthesis, and the fineness of steel bars needed when the steel bars are used as the objects is higher. The method mainly distinguishes all parts of the steel bar, performs soft collision on the premise of meeting refinement, and finds out places which do not meet requirements.
As shown in the attached figure 1, the steel grating nodes at the turning positions of the large curves of the underground excavated tunnel based on the BIM technology, the arrangement conflict and the optimized arrangement method have the specific operation steps. As shown in fig. 2, a concrete embodiment diagram of steel grating nodes at a large curve of an underground tunnel and an arrangement conflict and optimization arrangement method based on the BIM technology.
As shown in fig. 1 and 2, the method is applied to checking and arranging the steel grating nodes and the arrangement conflicts in the range of the large curve turning of the subway station transfer passage according to the BIM technology, and specifically comprises the following operation steps:
step 1, establishing a cross passage large curve turning part initial support structure model by using Autodesk Revit modeling software, and extracting related technical parameters according to a steel grating reinforcing steel bar and a foot plate layout at a turning part, wherein the parameters comprise grating reinforcing steel bar radian, foot plate layout position, reinforcing steel bar model, foot plate size, reinforcing rib layout position, grating reinforcing steel bar interval, grating-to-grating interval layout, grating foot plate layout, grating central line layout and the like;
step 4, carrying out optimized position adjustment on the checked grating nodes, the distances between the foot plates and the grating arrangement, which cause the position conflict of the steel gratings at the large curves due to the arrangement according to the design drawing, until the steel gratings at the large curves are not influenced mutually, and determining the arrangement distance of the gratings, the arrangement of the grating nodes and the foot plates;
and 5, deriving an analysis report including a conflict report according to the grid layout, butting the conflict report with the design, and finding out the error reason to modify and optimize in advance.
By adopting the method, the conflict between the steel grating arrangement and the grating nodes at the large curve can be solved, the conflict position is optimized, and the positive effect of preventing quality control in advance is played. The problem of big curve department steel grating arrange according to the design and lead to the grid node conflict each other more, on-the-spot adjustment steel grating leads to the steel grating to assemble the quality relatively poor, reduces the influence to the quality to can promote the application innovation of BIM technique in subway construction.
The steel grating nodes at the large curve turning positions of the underground excavated tunnel based on the BIM technology and the arrangement conflict and optimized arrangement method can be applied to the following projects:
the engineering is a transfer passage of a subway platform, the transfer passage is constructed by a mining method, the total length of the engineering transfer passage is 72.793m, the transfer passage structure adopts a vault straight wall section form, a standard section is 2 pilot holes, a primary support is 300mm thick, a civil air defense section is 4 pilot holes, the primary support is 350mm, a support system is formed by C25 sprayed concrete, a reinforcing mesh, a foot locking anchor rod and a steel grating, and the vault advanced support adopts deep hole grouting. The clear width of the pilot hole of the sections 1-1 and 3-3 of the standard section of the transfer channel is 7.2m, and the clear height of the pilot hole is 5.9 m; the clear width of a pilot tunnel of a section 2-2 of the civil air defense section is 11m, the clear height of the pilot tunnel is 8.07m, and a temporary inverted arch is additionally arranged on the original design standard section 3m before entering the tunnel. And excavating each pilot tunnel by adopting a step method. The thickness of the covering soil of the top plate of the transfer passage structure is 10.96 m-12.88 m, the elevation of the bottom plate is 28.582-30.82 m, and the minimum clear distance between the straight section and the station is 6.24 m. The invention is applied to the transfer channel engineering and has good use effect.
By adopting the technical scheme of the invention, the large curve turning steel grating reinforcing steel bar conflict inspection process and the BIM can be combined, so that the design management and control efficiency can be greatly improved, the cost is saved, and the project construction period is shortened. The BIM technology and the duct piece are combined in the existing market, calculation and display are mainly performed by drawing a duct piece steel reinforcement cage model, and the required fineness is higher when the steel bars are used as objects.
The BIM technology-based steel grating arrangement method for the large curve turning of the underground excavated tunnel has the advantages that:
1. when the conflict detection function of a Fuzor software platform is utilized, under the premise that the thickness of reinforced concrete at the outermost layer of the steel grating of the primary support structure is 30mm, the steel grating nodes and arrangement at the large curve are subjected to conflict detection operation, and are adjusted on the premise that acceptance and relevant specifications are met until the steel grating nodes are qualified;
2. the Fuzor software platform is used for conflict check, the drawing is optimized in time, the drawing is more perfect, the actual implementation is more precise, meanwhile, the attribute and the code of the relevant conflict component are also contained in the conflict report, the conflict part can be quickly searched, the working efficiency is improved, the work is more coordinated, and the method is more scientific and reasonable;
3. the number of times of grid processing reworking is reduced to ensure implementation in the aspects of cost control and quality optimization, and the steel grid assembling quality can be improved by utilizing the conflict and optimized arrangement method of the steel grid foot plates at the large curve position of the underground excavated tunnel based on the BIM technology.
It should be noted that the structures, ratios, sizes, and the like shown in the drawings attached to the present specification are only used for matching the disclosure of the present specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions of the present invention, so that the present invention has no technical essence, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. A BIM technology-based steel grating arrangement method for large curve turning of an underground tunnel is characterized by comprising the following steps:
establishing a BIM underground tunnel large curve primary support structure model by using Autodesk Revit modeling software, and extracting related technical parameters according to a steel grid reinforcing steel bar and foot plate layout at a turning;
according to the extracted parameters, drawing a steel grating reinforcing steel bar model at the turning by using Autodesk Revit modeling software;
exporting the primary support structure model and the steel grating reinforcing steel bar model to Fuzor software, attaching the steel grating reinforcing steel bar model to the primary support structure model according to concrete protective layer parameters and design turning steel grating design intervals, and respectively carrying out soft collision conflict inspection on each steel grating at a turning, the steel grating and the primary support structure;
and (4) carrying out optimized position adjustment on the distances among the grid nodes, the foot plates and the grid arrangement, which are checked out to cause the position conflict of the steel grids at the large curve position due to the arrangement according to the design drawing, until the steel grids at the large curve position are not influenced mutually, and determining the grid arrangement distance, the grid nodes and the foot plate arrangement.
2. The method for arranging the steel grating at the large-curve turning part of the underground tunnel based on the BIM technology as claimed in claim 1, wherein after the arrangement of the grating arrangement interval, the grating nodes and the foot plate arrangement is determined, the method further comprises the following steps: and (4) deriving a grid layout diagram, deriving an analysis report according to the grid layout diagram, analyzing the conflict reason and modifying and optimizing.
3. The BIM technology-based layout method for the steel grating at the large-curve turning part of the underground excavated tunnel according to claim 1, wherein the primary support structure model comprises a primary support thickness, a primary support axis layout at the turning part, a length of the primary support model, a height of the primary support model, and a vault radian of the primary support structure.
4. The BIM technology-based steel grating arrangement method for the large-curve turning of the underground excavated tunnel according to claim 1, wherein the relevant technical parameters extracted according to the steel grating reinforcing steel bars and the foot plate arrangement drawing at the turning comprise the radian of the grating reinforcing steel bars, the arrangement position of the foot plate, the type of the reinforcing steel bars, the size of the foot plate, the arrangement position of the reinforcing ribs and the distance between the grating reinforcing steel bars.
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| CN108759774B (en) * | 2018-05-28 | 2022-04-12 | 中国建筑第八工程局有限公司 | Measuring method of irregular curved tunnel |
| CN109800536A (en) * | 2019-02-17 | 2019-05-24 | 四川汶马高速公路有限责任公司 | One kind parameterizing tunnel model fast modeling method based on Revit and Dynamo |
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