CN112627893A - 3D printing water gate wall and assembling method thereof - Google Patents
3D printing water gate wall and assembling method thereof Download PDFInfo
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Abstract
The invention belongs to the technical field of construction of a coal mine underground water gate wall, and discloses a 3D printing water gate wall and an assembly method thereof, wherein the water gate wall sequentially comprises a front arch protecting section, a main body section and a rear arch protecting section from front to back; the main body section comprises a base, a side wall and an assembling module filled between the base and the side wall; the side walls comprise a left side wall, a top wall and a right side wall; the upper end surface of the base is provided with a plurality of base grooves; the assembly module comprises a bottom wedge-shaped module, a plurality of main body block-shaped modules and a transition block-shaped module which are mutually embedded from bottom to top in sequence; a top module is arranged between the transition block module and the top wall. The assembling method comprises the steps of concrete pouring, building of a building model, 3D printing of an assembling module and assembling. The whole split joint module that divides into a plurality of independence and carry out 3D and print of sluice wall adopts 3D printing technique to make the split joint module shaping in advance, has saved the required plenty of time of concrete placement, has reduced the time limit for a project by a wide margin.
Description
Technical Field
The invention relates to the technical field of construction of a coal mine underground water gate wall, in particular to a 3D printing water gate wall and an assembling method thereof.
Background
With the pace of national energy structure adjustment being accelerated, the technology of waste mine recycling is constantly developing. At present, the technical scheme of transforming the abandoned mine into the dam-free pumped storage power station is relatively mature, and the engineering implementation is started in many places. The power stations constructed in abandoned mines need a water-filled space as an underground reservoir, a certain water-unfilled space is needed for production activities such as power generation, drainage and the like, and the sluice walls are important structures for isolating the water-filled space and the water-unfilled space to ensure safe production. Therefore, from the perspective of resource utilization and disaster prevention and reduction, the intelligent and rapid assembly of the water gate wall is guaranteed to meet the requirements of emergency rescue and green construction.
The existing underground coal mine water gate wall widely adopts a concrete pouring construction method, the construction amount of the method is large, and the construction difficulty of the project is increased due to the fact that the wall structure is more in detail and the underground construction condition is poor; in addition, when the sluice wall is cast by adopting concrete, parting seams are generated between new and old concrete due to discontinuous casting, and condensation contraction seams are generated due to uneven heat dissipation inside and outside the concrete block, so that the strength of the concrete is reduced, the engineering quality hidden danger is brought, and even the failure of the sluice wall is caused; meanwhile, different from the traditional underground water gate wall used in a coal mine, the water gate wall for pumping and storing the water in the abandoned mine is influenced by pumping water for a long time and circulating dynamic load, so that the risk of water damage is higher, once a water inrush accident occurs, the traditional construction method relates to more sub-projects, and each project link needs a certain time, especially the pouring project period of the water gate wall is relatively long, so that the time for rescue and relief work is hard to be won; moreover, because the sluice wall is huge in size and is difficult to change once built in a short period, the prior art lacks the construction and utilization of a sluice wall building information model, cannot know the defects of a design scheme in time, and lacks dynamic and visual construction management.
In summary, because the existing method for constructing the water lock wall in the coal mine has high labor intensity, great difficulty in controlling engineering quality, long construction period and incapability of meeting the requirement of quick construction, a new assembling method is urgently needed to solve the problems of the existing method for constructing the water lock wall.
Disclosure of Invention
The invention aims to overcome the defects and provides a 3D printing water gate wall and an assembling method thereof. In order to achieve the purpose, the invention is implemented according to the following technical scheme:
A3D printing water gate wall comprises a front arch protecting section, a main body section and a rear arch protecting section from front to back in sequence; the main body section comprises a base, a side wall and an assembling module filled between the base and the side wall; the side walls comprise a left side wall, a top wall and a right side wall;
the upper end surface of the base is provided with a plurality of base grooves; a plurality of side wall grooves are formed in the inner sides of the left side wall and the right side wall; the left side wall, the top wall, the right side wall and the base are all provided with drill holes;
the assembly module comprises a bottom wedge-shaped module, a plurality of main body block-shaped modules and a transition block-shaped module which are mutually embedded from bottom to top in sequence; a top module is arranged between the transition block module and the top wall;
the left end and the right end of the main body block module and the transition block module are respectively provided with a side wall bulge which is embedded with the side wall groove of the left side wall and the right side wall.
Preferably, the bottom wedge-shaped module comprises a wedge-shaped module A and a wedge-shaped module B which are embedded left and right; the main bodies of the wedge-shaped module A and the wedge-shaped module B are both wedge-shaped, and the lower end faces of the wedge-shaped module A and the wedge-shaped module B are both provided with base bulges matched with the base grooves; the upper end surfaces of the wedge-shaped module A and the wedge-shaped module B are both provided with module bulges; the end surfaces of the wedge-shaped module A and the wedge-shaped module B which are contacted with each other are splicing bulges and splicing grooves which are mutually embedded;
the main block module comprises a block module A and a block module B which are embedded from left to right; the main bodies of the block-shaped module A and the block-shaped module B are in a parallelepiped shape, and the lower end faces of the block-shaped module A and the block-shaped module B are both provided with module grooves matched with the module bulges; the upper end surfaces of the block-shaped module A and the block-shaped module B are respectively provided with a module bulge matched with the module groove; the end surfaces of the block-shaped modules A and B which are contacted with each other are splicing bulges and splicing grooves which are mutually embedded;
the upper end surface of the transition block-shaped module is not provided with module bulges, and the rest structures are the same as the main body block-shaped module;
the lower end face of the top module is matched with the upper end face of the transition module; the top module upper end surface is matched with the top wall.
Preferably, the front arch protecting section and the rear arch protecting section have the same cross section shape; the left side wall and the right side wall in the main body section have the same structure; in the main body section, the cross section shape of the left side wall without the side wall groove is the same as that of the front arch protecting section.
Preferably, the front arch protecting section, the rear arch protecting section, the base and the side wall are all concrete pouring pieces; the assembly modules are 3D printed pieces.
Preferably, the lengths of the front protecting arch section and the rear protecting arch section are not less than 5 m; the length of the main body section is 3-5 m; an anchor rod or a grouting pipe is inserted into the drill hole.
Preferably, the assembly modules and the side walls, and the bottom wedge-shaped modules and the base are bonded and sealed by rubber materials and are fastened and connected by arc-shaped bolts.
The invention also provides an assembly method of the 3D printing water gate wall, which comprises the following steps:
s1, pouring concrete
In the selected roadway area, concrete is poured into the side walls and the base in the front arch protecting section, the rear arch protecting section and the main body section; and the foundation structure is prefabricated by matching with anchor rod grouting reinforcement and wall back grouting reinforcement;
s2, building a building model
Building a water gate wall model by using BIM software, converting the assembly modules in the main body section to generate an STL file, and generating a printing program code;
s3, assembling module 3D printing
3D printing is carried out by using 3D printing equipment according to the printing program code obtained in the step S2, and an assembly module is obtained;
s4, assembling
Splicing the spliced modules obtained in the step S3 between the base and the side wall of the main body section from bottom to top according to the sequence of the bottom wedge-shaped module, the main body block-shaped module and the transition block-shaped module; finally, the top module is placed between the transition block module and the top wall;
the assembly modules, the assembly modules and the side walls and the bottom wedge-shaped modules and the base are bonded and sealed through rubber materials and are all connected through arc-shaped bolts in a fastening mode.
Preferably, in step S1, the calculation formula of the depth E of the sidewall of the main body segment embedded in the surrounding rock and the length L of the main body segment is as follows:
calculating the depth E of the side wall of the main body section embedded into the surrounding rock according to the concrete compressive strength:
calculating the length L of the main body section according to the shear strength of the concrete:
in the formulas (1) and (2),
p-design water pressure, unit MPa;
S1-total area of the water surface borne by the upstream face, in m2；
S2-the total area of the water surface borne by the water back surface in m2；
C1-the net perimeter of the face roadway is in units of m;
C2-the clear perimeter of the roadway on the back surface is in units of m;
sigma-safe compressive strength of concrete, unit MPa;
tau-safe shearing strength of concrete, unit MPa.
Preferably, in step S2, after the water gate wall model is established, the BIM software and the numerical simulation software are used to perform dynamic demonstration on the simulation of the water gate wall model; the numerical simulation performed by the numerical simulation software comprises original stress field statics analysis, assembly module contact analysis and circulating water pumping and discharging effect transient analysis.
Preferably, in the process of assembling the water gate wall, a strain gauge, a dislocation meter and a water pressure observation device are arranged on the water gate wall. The installation of devices such as a strain gauge, a dislocation meter, a water pressure observation device and the like can monitor the permeability, damage factors, tensile strength, crack size, structural body deformation value and real-time water pressure of the sluice wall.
Compared with the prior art, the invention has the beneficial effects that:
1. the whole split joint module that divides into a plurality of independence and carry out 3D and print of sluice wall adopts 3D printing technique to make the split joint module shaping in advance, has saved the required plenty of time of concrete placement, has reduced the time limit for a project by a wide margin.
2. The main body section of the water gate wall is connected and embedded through the bulges and the grooves among the splicing modules, so that the required bearing capacity and the anti-seepage effect are integrally achieved, and the quality of the water gate wall engineering is ensured.
3. The BIM software is used for building a corresponding model, dynamic and visual building management is realized by inputting design parameters and outputting printing codes, and the working efficiency is improved.
4. The module can be printed in advance and assembled for reservation, rapid emergency rescue is realized when large-flow water inrush occurs in a roadway, and the requirement for constructing a water gate wall under emergency is met.
Drawings
FIG. 1 is a schematic structural view of the assembled water gate wall of embodiment 1;
FIG. 2 is a schematic structural view of the side walls and the base of the front main body segment and the rear main body segment of the embodiment 1;
FIG. 3 is an assembly diagram of the construction module according to embodiment 1;
FIG. 4 is a perspective view of wedge module A of FIG. 3 from another perspective;
FIG. 5 is a perspective view of the block module A of FIG. 3;
FIG. 6 is a perspective view of FIG. 5 from another perspective;
FIG. 7 is a perspective view of the block B of FIG. 3;
FIG. 8 is a perspective view of FIG. 7 from another perspective;
FIG. 9 is a perspective view of the transition module A of FIG. 3;
fig. 10 is a schematic distribution diagram of anchor rods and grouting pipes in the side wall of the main body section.
In the figure: 1 front protective arch section, 2 main body section, 3 rear protective arch section, 4 bases, 5 left side walls, 6 top walls, 7 right side walls, 8 base grooves, 9 side wall grooves, 10 drill holes, 11 top modules, 12 side wall protrusions, 13 wedge-shaped modules A, 14 wedge-shaped modules B, 15 base protrusions, 16 module protrusions, 17 splicing protrusions, 18 splicing grooves, 19 block-shaped modules A, 20 block-shaped modules B, 21 module grooves, 22 transition modules A, 23 transition modules B, 24 anchor rod holes, 25 grouting holes, 26 anchor rods and 27 grouting pipes.
Detailed Description
The present invention will be further described with reference to specific examples, which are illustrative of the invention and are not to be construed as limiting the invention.
Example 1
A3D printing water gate wall comprises a front arch protecting section 1, a main body section 2 and a rear arch protecting section 3 from front to back. The main body section 2 comprises a base 4, side walls and splicing modules filled between the base 4 and the side walls; the side walls include a left side wall 5, a top wall 6, and a right side wall 7.
The left side and the right side of the upper end surface of the base 4 are respectively provided with three base grooves 8; four side wall grooves 9 are respectively arranged on the inner sides of the left side wall 5 and the right side wall 7; the left side wall 5, the top wall 6, the right side wall 7 and the base 4 are all provided with drill holes 10.
The front protecting arch section 1 and the rear protecting arch section 3 have the same cross section shape; the left side wall 5 and the right side wall 7 in the main body section 2 have the same structure; in the main body section 2, the cross section shape of the left side wall without the side wall groove is the same as that of the front arch protecting section. The cross-sectional shape in this embodiment is a three-arch shape.
The assembly module comprises a bottom wedge-shaped module, five main body block-shaped modules and a transition block-shaped module which are mutually embedded from bottom to top in sequence; a top module 11 is placed between the transitional block module and the top wall.
The left and right ends of the main block module and the transition block module are respectively provided with a side wall bulge 12 which is embedded with the side wall groove 9 of the left side wall and the right side wall.
The bottom wedge-shaped module comprises a wedge-shaped module A13 and a wedge-shaped module B14 which are engaged left and right; the main bodies of the wedge-shaped module A13 and the wedge-shaped module B14 are both wedge-shaped, and the lower end surfaces of the wedge-shaped module A13 and the wedge-shaped module B14 are both provided with base protrusions 15 matched with the base grooves 8; the upper end surfaces of the wedge-shaped module A13 and the wedge-shaped module B14 are both provided with module protrusions 16; the end surfaces of the wedge-shaped module A13 and the wedge-shaped module B14 which are contacted with each other are a splicing bulge 17 and a splicing groove 18 which are mutually embedded.
The main block module comprises a block module A19 and a block module B20 which are embedded at the left and the right; the main bodies of the block module A19 and the block module B20 are in a parallelepiped shape, and the lower end faces of the block module A19 and the block module B20 are provided with module grooves 21 matched with the module protrusions 16; the upper end surfaces of the block module A19 and the block module B20 are both provided with module protrusions 16 matched with the module grooves 21; the contact end surfaces of the block module A19 and the block module B20 are a splicing bulge 17 and a splicing groove 18 which are mutually embedded. The thickness of the sidewall protrusion 12 in the vertical direction is equal to the thickness of the main body of the block module a19 in the vertical direction.
The transition block-shaped modules comprise a transition module A22 and a transition module B23 which are embedded at the left and the right; the upper end faces of the transition module a22 and the transition module B23 have no module protrusions, and the rest of the structure is the same as that of the block module a19 and the block module B20. The lower end face of the top module 11 is matched with the upper end face of the transition module; the top module 11 is fitted with the top wall 6 at its upper end.
The thickness of the module protrusion is 150mm, the width of the module protrusion is 300mm, and the width and the length of the module protrusion do not exceed the length of the splicing module below the module protrusion. In order to facilitate the embedding of the module protrusion and the module groove, the gap between the module protrusion and the module groove is 20 mm; in order to facilitate the embedding of the splicing bulges and the splicing grooves, the gap between the splicing bulges and the splicing grooves is 20 mm; in order to facilitate the embedding of the base groove and the base bulge, the gap between the base groove and the base bulge is 20 mm; in order to facilitate the embedding of the side wall protrusion and the side wall groove, the clearance between the side wall protrusion and the side wall groove is 20 mm.
The number of the module bulges on the upper end surfaces of the wedge-shaped module A, the wedge-shaped module B, the block-shaped module A and the block-shaped module B is three; the number of the splicing bulges of the wedge-shaped module A is four, and the number of the splicing bulges of the wedge-shaped module B is five; the splicing bulges of the block module A and the transition module A are five; the splicing bulges of the block-shaped module B and the transition module B are four.
The front protecting arch section 1, the rear protecting arch section 3, the base 4 and the side wall are all concrete castings, and concrete with the strength not lower than C30 is poured in the selected roadway area; the assembly module is 3D printing piece, and 3D printing piece is 3D printing concrete piece. After the water gate wall is finished, partial assembly modules can be printed in advance and stored for emergency.
The lengths of the front protecting arch section 1 and the rear protecting arch section 3 are not less than 5 m; the length of the main body section 2 is 3 m; the drill hole 10 comprises an anchor rod hole 24 and a grouting hole 25; an anchor rod 26 is inserted into the anchor rod hole 24, and a grouting pipe 27 is inserted into the grouting hole 25.
The seam surfaces between the assembly modules, the seam surfaces between the assembly modules and the side walls, and the seam surfaces between the bottom wedge-shaped module and the base are bonded and sealed by rubber materials; the rubber material is a rubber sealing gasket, and the bonding and sealing mode is a hydraulic pressure compression mode, so that the bonding and blocking effects of the seam surface can be ensured. The hydraulic crimping of rubber gaskets is well known to those skilled in the art and will not be described in detail herein.
The assembling modules, the assembling modules and the side walls, and the bottom wedge-shaped modules and the base are all connected through arc bolts in a fastening mode. The concrete mode is as follows: the block module A19 and the left side wall 5, and the transition module A22 and the left side wall 5 are fixedly connected through arc bolts; the block-shaped module B20 and the right side wall 7, and the transition module B23 and the right side wall 7 are fixedly connected through arc-shaped bolts; the wedge-shaped module A13 and the wedge-shaped module B14 are fixedly connected, the block-shaped module A19 and the block-shaped module B20 are fixedly connected, and the transition module A22 and the transition module B23 are fixedly connected through arc-shaped bolts; the wedge-shaped module A13 and the base 4 and the wedge-shaped module B14 and the base 4 are fixedly connected through arc bolts; the top module 11 and the top wall 6, the top module 11 and the transition module A22, and the top module 11 and the transition module B23 are fixedly connected through arc bolts. The arc bolt used by the invention is used for connecting shield segments, and the connection mode, the hand hole required during connection and the structure of the bolt hole are communicated with the connection between the shield segments, which are well known to those skilled in the art, and are not described and drawn in detail herein.
Example 2
An assembling method of a 3D printing water gate wall comprises the following steps:
(1) site selection and model selection of sluice wall
The water gate wall should be arranged in a hard, stable, complete and compact rock stratum and avoid karst, fault, joint and fracture development broken zones, and is not suitable for being arranged in a coal bed. The periphery of the water gate wall must be provided with protective coal and rock pillars, so that mining influence is strictly forbidden, and the water gate wall is arranged in a small-section and linear roadway as much as possible.
According to the concrete condition of the section of the roadway, the section shape of the foundation structure is designed, common section shapes include a rectangle, a semicircular arch, a three-heart arch, a horseshoe and the like, and the three-heart arch is taken as an example in the embodiment.
The assembled water gate wall of this example was constructed in accordance with the structure of example 1.
(2) Determining subject segment design parameters
And (4) solving a calculation formula of the depth E of the side wall of the main body section embedded into the surrounding rock and the length L of the main body section according to the safe compressive strength sigma and the safe shear strength tau of the concrete, and calculating.
Calculating the depth E of the main body embedded into the surrounding rock according to the concrete compressive strength:
calculating the length L of the main body according to the shear strength of the concrete:
in the formulas (1) and (2),
p-design water pressure, unit MPa;
S1-total area of the water surface borne by the upstream face, in m2；
S2-the total area of the water surface borne by the water back surface in m2；
C1-the net perimeter of the face roadway is in units of m;
C2-the clear perimeter of the roadway on the back surface is in units of m;
sigma-safe compressive strength of concrete, unit MPa;
tau-safe shearing strength of concrete, unit MPa.
The design water pressure P is determined according to hydrogeological data of a mine, and the determination method of the maximum water pressure is considered according to specific conditions of the mine, and the related specification requirements in mining engineering design manual (coal industry press) can be referred to specifically. The concrete strength grade should not be lower than C30, and the relevant values of the safe compressive strength sigma and the safe shear strength tau of the concrete considered in this embodiment can be obtained by referring to design Specification for concrete Structure (GBJ10-89) in combination with concrete strength gradeA determination is made. Total area S of water surface borne by upstream surface of water gate wall and downstream surface of water gate wall1、S2Clear perimeter C of roadway on upstream side and downstream side of sluice wall1、C2And carrying out value taking according to the specific tunnel section size parameter. The positions of the upstream side of the sluice wall and the downstream side of the sluice wall are well known to those skilled in the art and are not limited herein.
(3) Concrete pouring and grouting reinforcement
In the roadway, concrete is poured into the side walls and the base in the front arch protecting section, the rear arch protecting section and the main body section; and the foundation structure is prefabricated by matching with anchor rod grouting reinforcement and wall back grouting reinforcement (the foundation structure is the side wall and the base in the front arch protecting section, the back arch protecting section and the main body section). The depth of embedding the side walls of the front and rear arch protecting sections into the surrounding rock is consistent with the depth E of embedding the side walls into the surrounding rock in the main body section.
During construction, the lower geosyncline is poured from outside to inside to the designed height of the bottom plate, and then pouring construction is sequentially carried out according to the principle of inner-first, outer-first, lower-first and upper-second, namely the geosyncline, the front protecting arch section, the main body section and the rear protecting arch section are sequentially constructed. In the pouring process, the sidewall grooves and the base grooves are respectively and uniformly arranged on the sidewall and the base of the main body section according to embodiment 1. The side wall grooves and the base grooves are 4 grooves arranged in every 3 m.
The front arch protecting section, the rear arch protecting section and the main body section are all reinforced by adopting anchor rod grouting and wall back grouting to the surrounding rock.
The specific process is as follows: and drilling holes are arranged at intervals of 2m along the periphery of the roadway in the main body section, and the drilling holes are divided into anchor rod holes with the depth of 2m and grouting holes with the depth of 0.5 m. Wherein, insert the long stock of 2m in the anchor rod hole, adopt the stock slip casting mode to consolidate the country rock. And a grouting pipe with the length of 600mm is arranged in the grouting hole, and the gap between the foundation structure and the surrounding rock is subjected to wall-behind grouting and dense filling. And after the foundation structure is poured, grouting should be repeatedly carried out on the wall of the foundation structure for not less than 3 times, and the final grouting pressure of the foundation structure should be more than 1.5 times of the designed water pressure. The grouting reinforcement adopts a series of grouting materials and grouting processes such as superfine cement-water glass double-liquid grouting, modified urea resin organic-inorganic combined grouting material improvement and the like.
(4) Building model established by BIM software
According to the embodiment 1, the BIM software is utilized to establish the water gate wall model according to the determined relevant dimension parameters through reasonable simplification.
And after the water gate wall model is established, outputting and converting to generate an STL file, converting the STL file by adopting a corresponding data processing system, processing and analyzing related data, determining the printing sequence, and generating a printing path and a printing code. The information of any component in the BIM model is changed, and the corresponding component information is correspondingly changed in the data processing system. After the path planning is finished, the three-dimensional model formed by all the primitives can be visually displayed in BIM software, the design scheme is completed in time, and the printing process is further modified and monitored.
(5) 3D printing of assembly module
And preparing the concrete material meeting the requirements of the water gate wall on the relevant strength and impermeability grade according to the requirements. 3D printing is carried out by using 3D printing equipment according to the printing program code obtained in the step S2, and an assembly module is obtained; the specific process is as follows:
a pumping device containing building materials (concrete materials) drives a nozzle through the operation of a mechanical arm, and model drawings are superposed and printed layer by layer according to printing codes input by BIM software and are printed one by one to form an assembly module of the sluice wall. The assembly module comprises a bottom wedge-shaped module, a main body block-shaped module, a transition block-shaped module and a top module.
The operation of the 3D printing device is completed by the control system, and after the path is planned, printing program codes are generated to drive the control system. Real-time data can also be transmitted to the BIM management system in the operation process of the control system, and dynamic and visual management on safety, cost, quality and progress in the 3D printing production process is realized. According to specific engineering requirements, a corresponding number of assembly modules can be printed in advance and reserved for emergency.
(6) Rapid assembly of assembly modules
When the assembling is carried out, the quick assembling of the main body section assembling module is completed by adopting the construction steps from bottom to top. The bottom wedge-shaped modules are firstly assembled, the main block-shaped modules are secondly assembled, the transition block-shaped modules are assembled again, and finally the top modules are pushed between the top wall and the transition block-shaped modules.
When assembling is carried out, the side wall groove is embedded with the side wall bulge of the assembling module; the base groove is embedded with the base protrusion, the upper and lower adjacent assembly modules are embedded with the module groove through the module protrusion, and the left and right adjacent assembly modules are embedded with the assembly groove through the assembly protrusion. When the assembly of the bottom wedge-shaped module, the main body block-shaped module and the transition block-shaped module is finished, a space can be reserved in the top plate part, and the top module can be installed in a push-in mode.
The assembly modules, the assembly modules and the side walls and the bottom wedge-shaped module and the base are fixedly connected through arc-shaped bolts so as to enhance the integrity, the pressure resistance and the permeability resistance of the wall body. The joint surfaces are jointed by adopting a rubber sealing gasket hydraulic pressure compression joint mode, so that the adhesion and the plugging effects of the joint surfaces are ensured. The above main body section concrete module quick assembly operation is expected to be completed within 8 h.
(7) Technical index testing
And after the assembly and the forming, painting and decorating the exposed outer surfaces of the foundation structure and the assembly modules and completing related test tests. The test indexes include: pressure resistance test, sealing leakage test, monitoring system debugging, wall structure stress test and the like, and can be put into normal production and use after the test is qualified. When a water injection pressure-resistant test is carried out, the water injection pressure should reach the design pressure, the stabilization time should be kept for the time length T of the primary water filling period of pumped storage, and the water leakage amount should be less than 10m3/24h。
In the building model established by the BIM software in the step (4), after the sluice wall model is established, the BIM software and the numerical simulation software are used for carrying out dynamic demonstration on the simulation of the sluice wall model; the numerical simulation performed by the numerical simulation software comprises original stress field statics analysis, assembly module contact analysis and circulating water pumping and discharging effect transient analysis.
The technical solution of the present invention is not limited to the limitations of the above specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.
Claims (10)
1. A3D printing water gate wall comprises a front arch protecting section, a main body section and a rear arch protecting section from front to back in sequence; the method is characterized in that: the main body section comprises a base, a side wall and an assembling module filled between the base and the side wall; the side walls comprise a left side wall, a top wall and a right side wall;
the upper end surface of the base is provided with a plurality of base grooves; a plurality of side wall grooves are formed in the inner sides of the left side wall and the right side wall; the left side wall, the top wall, the right side wall and the base are all provided with drill holes;
the assembly module comprises a bottom wedge-shaped module, a plurality of main body block-shaped modules and a transition block-shaped module which are mutually embedded from bottom to top in sequence; a top module is arranged between the transition block module and the top wall;
the left end and the right end of the main body block module and the transition block module are respectively provided with a side wall bulge which is embedded with the side wall groove of the left side wall and the right side wall.
2. The 3D printed floodgate wall of claim 1, wherein:
the bottom wedge-shaped module comprises a wedge-shaped module A and a wedge-shaped module B which are embedded left and right; the main bodies of the wedge-shaped module A and the wedge-shaped module B are both wedge-shaped, and the lower end faces of the wedge-shaped module A and the wedge-shaped module B are both provided with base bulges matched with the base grooves; the upper end surfaces of the wedge-shaped module A and the wedge-shaped module B are both provided with module bulges; the end surfaces of the wedge-shaped module A and the wedge-shaped module B which are contacted with each other are splicing bulges and splicing grooves which are mutually embedded;
the main block module comprises a block module A and a block module B which are embedded from left to right; the main bodies of the block-shaped module A and the block-shaped module B are in a parallelepiped shape, and the lower end faces of the block-shaped module A and the block-shaped module B are both provided with module grooves matched with the module bulges; the upper end surfaces of the block-shaped module A and the block-shaped module B are respectively provided with a module bulge matched with the module groove; the end surfaces of the block-shaped modules A and B which are contacted with each other are splicing bulges and splicing grooves which are mutually embedded;
the upper end surface of the transition block-shaped module is not provided with module bulges, and the rest structures are the same as the main body block-shaped module;
the lower end face of the top module is matched with the upper end face of the transition module; the top module upper end surface is matched with the top wall.
3. The 3D printed floodgate wall of claim 2, wherein: the cross sections of the front protecting arch section and the rear protecting arch section are the same in shape; the left side wall and the right side wall in the main body section have the same structure; in the main body section, the cross section shape of the left side wall without the side wall groove is the same as that of the front arch protecting section.
4. The 3D printed floodgate wall of claim 3, wherein: the front protecting arch section, the rear protecting arch section, the base and the side wall are all concrete castings; the assembly modules are 3D printed pieces.
5. The 3D printing waterwall of claim 4, wherein: the lengths of the front protecting arch section and the rear protecting arch section are not less than 5 m; the length of the main body section is 3-5 m; an anchor rod or a grouting pipe is inserted into the drill hole.
6. The 3D printed floodgate wall of claim 5, wherein: the assembly modules, the assembly modules and the side walls and the bottom wedge-shaped modules and the base are bonded and sealed through rubber materials and are all connected through arc-shaped bolts in a fastening mode.
7. A method of assembling a 3D printed floodgate wall according to any of claims 1 to 6, comprising the steps of:
s1, pouring concrete
In the selected roadway area, concrete is poured into the side walls and the base in the front arch protecting section, the rear arch protecting section and the main body section; and the foundation structure is prefabricated by matching with anchor rod grouting reinforcement and wall back grouting reinforcement;
s2, building a building model
Building a water gate wall model by using BIM software, converting the assembly modules in the main body section to generate an STL file, and generating a printing program code;
s3, assembling module 3D printing
3D printing is carried out by using 3D printing equipment according to the printing program code obtained in the step S2, and an assembly module is obtained;
s4, assembling
Splicing the spliced modules obtained in the step S3 between the base and the side wall of the main body section from bottom to top according to the sequence of the bottom wedge-shaped module, the main body block-shaped module and the transition block-shaped module; finally, the top module is placed between the transition block module and the top wall;
the assembly modules, the assembly modules and the side walls and the bottom wedge-shaped modules and the base are bonded and sealed through rubber materials and are all connected through arc-shaped bolts in a fastening mode.
8. The method of assembling a 3D printed floodgate wall according to claim 7, wherein: in step S1, the calculation formula of the depth E of the main body segment sidewall embedded into the surrounding rock and the length L of the main body segment is as follows:
calculating the depth E of the side wall of the main body section embedded into the surrounding rock according to the concrete compressive strength:
calculating the length L of the main body section according to the shear strength of the concrete:
in the formulas (1) and (2),
p-design water pressure, unit MPa;
S1-total area of the water surface borne by the upstream face, in m2；
S2The total area of the water surface borne by the water back surfaceBit m2；
C1-the net perimeter of the face roadway is in units of m;
C2-the clear perimeter of the roadway on the back surface is in units of m;
sigma-safe compressive strength of concrete, unit MPa;
tau-safe shearing strength of concrete, unit MPa.
9. The method of assembling a 3D printed floodgate wall according to claim 8, wherein: in step S2, after the water gate wall model is established, BIM software and numerical simulation software are used for carrying out dynamic demonstration on the simulation of the water gate wall model; the numerical simulation performed by the numerical simulation software comprises original stress field statics analysis, assembly module contact analysis and circulating water pumping and discharging effect transient analysis.
10. The method of assembling a 3D printed floodgate wall according to claim 9, wherein: in the assembly process of the water gate wall, a strain gauge, a dislocation meter and a water pressure observation device are arranged on the water gate wall.
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