CN114266087A - Thin-shell structure formwork system construction method and management system based on BIM technology - Google Patents
Thin-shell structure formwork system construction method and management system based on BIM technology Download PDFInfo
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Abstract
The invention discloses a thin-shell structure formwork system construction method and a management system based on a BIM technology, the method comprises the steps of establishing a dome BIM three-dimensional model, printing a solid template model of the dome BIM three-dimensional model by adopting a 3D printing technology, determining the distribution position of action points of the formwork system based on the solid template model, building a dome keel frame body based on the dome BIM three-dimensional model and the distribution position of the action points of the formwork system, deepening the dome template based on the dome BIM three-dimensional model, paving the deepened dome template on the dome keel frame body, and conducting sectional pouring on the built dome formwork system to form a dome concrete member, and conducting engineering quantity statistics on the dome BIM three-dimensional model based on the BIM technology, wherein the engineering quantity statistics comprises the template of the dome BIM three-dimensional model, the dome keel frame body and the concrete. The invention effectively ensures the construction quality, shortens the construction period, saves the labor, reduces the waste of turnover materials, has better molding quality and effectively reduces the engineering cost.
Description
Technical Field
The invention belongs to the technical field of concrete thin-shell structure construction, and particularly relates to a thin-shell structure formwork system construction method and a thin-shell structure formwork system management system based on a BIM (building information modeling) technology.
Background
In recent years, with the increasing material culture requirements of people, the diversified architectural styles are different and protruding, and a plurality of designs abandoned due to greater construction difficulty are recovered like bamboo shoots in spring after rain, wherein the concrete thin shell structure is more remarkable. The thin shell structure is a curved thin-wall structure, can fully utilize the material strength, and can integrate the two functions of bearing and enclosing into a whole. The shape is peculiar and novel, which can express the magnificent and magnificent cultural source of the magnificent shape and reflect the traditional style. But at the same time, the construction difficulty of the irregular section structure is very obvious. Firstly, the formwork support system is complex in frame body, traditional batten and other keel materials cannot meet an arc support mechanism, the keel is easy to damage due to bending, the support system is unstable and even topples and collapses, and the materials cannot be circulated, so that waste is caused; secondly, the variable curvature process of the dome is difficult to recover due to the planar deepening design, the fact that the templates need to be made into a trapezoid or a triangle (the waist edge is an arc line) due to the fact that different curvatures at different heights and the top templates converge at one point and the like causes the phenomenon that the templates are easily supplemented in a short time in the local template splicing process, and accordingly unsmooth concrete appearance, unsmooth curve, extremely poor forming effect and difficult later-stage repair are caused. Thirdly, the thickness of the spherical concrete is difficult to control, the steel bar protection layer is easy to reduce, and the structure fails.
Disclosure of Invention
The invention aims to provide a construction method and a management system of a thin-shell structure formwork system based on a BIM (building information modeling) technology, and aims to solve the problems that the construction accuracy of a variable-curvature sphere of an existing formwork support system is difficult to control, poor concrete forming quality, difficulty in controlling thickness, large post repair engineering quantity, high possibility of water leakage, water seepage and other hidden dangers and large material waste are caused.
In order to achieve the purpose, the invention provides a thin-shell structure formwork system construction method based on a BIM technology, which comprises the following steps:
establishing a dome BIM three-dimensional model;
printing an entity template model of the dome BIM three-dimensional model by adopting a 3D printing technology;
determining the action point distribution position of a mould frame system based on the entity template model;
building a dome dragon skeleton body based on the dome BIM three-dimensional model and the action point distribution position of the mold frame system;
deepening the dome template based on the dome BIM three-dimensional model, and paving the deepened dome template on a dome dragon framework body;
the built dome formwork system is poured in sections to form a dome concrete member;
and carrying out engineering quantity statistics on the dome BIM three-dimensional model based on the BIM technology, wherein the engineering quantity statistics comprises the engineering quantity statistics of a template, a dome dragon framework body and concrete of the dome BIM three-dimensional model.
According to one embodiment of the present invention, building a dome BIM three-dimensional model includes:
establishing a dome three-dimensional space coordinate system;
calculating control points and control lines of each construction plane of the dome based on the three-dimensional space coordinate system of the dome;
and determining the position of a main keel of the dome according to the control points and the control lines, and performing construction simulation on the dome by combining the construction plan and the process flow of the dome to generate a BIM (building information modeling) three-dimensional model of the dome.
According to an embodiment of the present invention, establishing the dome three-dimensional space coordinate system comprises:
and establishing a dome three-dimensional space coordinate system by taking the circle center connecting line of the latitudinal concentric circles of the dome as a Z axis, taking the plane of the two-layer structure as a transverse coordinate axis as an X axis and taking the plane of the two-layer structure as a longitudinal coordinate axis as a Y axis.
According to one embodiment of the present invention, the solid template model includes a dome model and a template model manufactured in a ratio of 1: 1000.
According to a specific embodiment of the invention, the building of the dome keel frame body based on the dome BIM three-dimensional model and the action point distribution position of the mould frame system comprises the following steps:
according to the distribution position of action points of a mould frame system, a dome template support is built by taking a z axis of a space coordinate system of a dome BIM three-dimensional model as a center;
binding a plurality of encryption cross rods between two outermost vertical spanning rods of the dome template support, and binding a plurality of encryption vertical rods at the top of the template support;
and (3) welding and binding a phi 20 steel bar to form a keel frame body of the dome, and fixedly connecting the keel frame body with the dome template support, and the encrypted cross rods and the encrypted vertical rods on the dome template support.
According to a specific embodiment of the invention, the dome formwork support adopts a fastener type full framing scaffold, the space between the vertical rods of the dome formwork support is 900mm multiplied by 900mm, and the frame step distance is 600 mm.
According to a specific embodiment of the invention, welding and binding a phi 20 steel bar into a keel frame body of the dome, and fixedly connecting the keel frame body with a dome template support, and an encryption cross rod and an encryption vertical rod on the dome template support respectively comprise:
measuring the diameters of latitudinal arc-shaped reinforcing steel bars corresponding to the encrypted cross bars with different heights according to the dome BIM three-dimensional model, fully welding the latitudinal arc-shaped reinforcing steel bars with the corresponding diameters onto the dome template support, and welding the latitudinal arc-shaped reinforcing steel bars onto the latitudinal arc-shaped reinforcing steel bars according to 48 equal parts along with the curvature change trend of the latitudinal arc-shaped reinforcing steel bars to form a dome main keel frame body;
three layers of lathes connected by staggered heads of the air nail gun are used as secondary keels, and the secondary keels are bound to the main keel frame body of the dome along with the curvature change of the latitudinal arc-shaped steel bars of the steel reinforcement frame.
According to an embodiment of the invention, deepening the dome template based on the dome BIM three-dimensional model, and paving the deepened dome template on the dome dragon skeleton body comprises the following steps:
the method comprises the steps of dividing a dome template into 24 groups along the radial direction of a dome dragon framework body, dividing the dome template into 15 groups along the latitudinal direction of the dome dragon framework body to form 360 template splices, and then paving the template splices on the dome dragon framework body, wherein the template splices are isosceles trapezoids.
According to a specific embodiment of the invention, the step of pouring the built dome formwork system in sections to form the dome concrete member comprises the following steps:
the method comprises the following steps of pouring a dome formwork system in three sections, wherein pouring is performed at the height of one third of the construction, a first pouring section and a second pouring section are both poured by self-compacting concrete bilateral closed formworks, a third pouring section is poured by an inclined roof pouring mode, three-section water stopping bolts are arranged in the first pouring section and the second pouring section and used for controlling the thickness of a dome body and manufacturing a dome to prevent water, and finally a dome concrete member is formed.
A thin shell structure die carrier system construction management system based on BIM technique includes:
the BIM modeling unit is used for establishing a dome BIM three-dimensional model;
the 3D printing unit is used for printing a solid template model of the dome BIM deepening model, and comprises a dome model and a template model;
the model deepening unit is used for deepening the dome BIM three-dimensional model according to the printed entity template model to obtain a dome BIM deepening model;
the engineering quantity counting unit is used for automatically counting the template of the dome BIM three-dimensional model, the dome dragon skeleton body and the concrete engineering quantity;
and the construction period deepening unit is used for deepening each construction process and carrying out self-adaptive distribution and scheduling on the work of site materials, personnel and machinery by identifying the site construction condition.
Compared with the prior art, the thin-shell structure formwork system construction method and the management system based on the BIM technology provided by the invention have the advantages that the dome BIM three-dimensional model is built, the solid template is printed in a 3D mode, the dome construction process is simulated, then the sizes of the inner template and the outer template of the dome and the scaffold are precisely lofted through the model, the work amount is counted, the construction process management is carried out, and finally the effects of accurate blanking, low cost, accurate positioning of hyperboloid construction precision and high dome forming quality are achieved. The method effectively ensures the construction quality, has obvious technical and economic benefits, shortens the construction period by deepening work, saves labor, reduces the waste of turnover materials, has better molding quality, reduces the later polishing maintenance, also reduces the later waterproof leakage maintenance problem and effectively reduces the engineering cost.
Drawings
Fig. 1 is a flowchart of a construction method of a thin-shell structure formwork system based on a BIM technique according to an embodiment of the present invention.
Fig. 2 is a flowchart of a dome BIM three-dimensional model building method according to an embodiment of the present invention.
Fig. 3 is a flowchart of a dome dragon skeleton body building method according to an embodiment of the invention.
Fig. 4 is a schematic structural diagram of a thin-shell formwork system construction management system based on the BIM technology according to an embodiment of the present invention.
Detailed Description
The present invention is described in detail below with reference to specific embodiments in order to make the concept and idea of the present invention more clearly understood by those skilled in the art. It is to be understood that the embodiments presented herein are only a few of all embodiments that the present invention may have. Those skilled in the art who review this disclosure will readily appreciate that many modifications, variations, or alterations to the described embodiments, either in whole or in part, are possible and within the scope of the invention as claimed.
As used herein, the terms "first," "second," and the like are not intended to imply any order, quantity, or importance, but rather are used to distinguish one element from another. As used herein, the terms "a," "an," and other similar terms are not intended to mean that there is only one of the things, but rather that the pertinent description is directed to only one of the things, which may have one or more. As used herein, the terms "comprises," "comprising," and other similar words are intended to refer to logical interrelationships, and are not to be construed as referring to spatial structural relationships. For example, "a includes B" is intended to mean that logically B belongs to a, and not that spatially B is located inside a. Furthermore, the terms "comprising," "including," and other similar words are to be construed as open-ended, rather than closed-ended. For example, "a includes B" is intended to mean that B belongs to a, but B does not necessarily constitute all of a, and a may also include C, D, E and other elements.
The terms "embodiment," "present embodiment," "an embodiment," "one embodiment," and "one embodiment" herein do not mean that the pertinent description applies to only one particular embodiment, but rather that the description may apply to yet another embodiment or embodiments. Those skilled in the art will appreciate that any descriptions made in relation to one embodiment may be substituted, combined, or otherwise combined with the descriptions in relation to another embodiment or embodiments, and that the substitution, combination, or otherwise combination of the new embodiments as produced herein may occur to those skilled in the art and are intended to be within the scope of the present invention.
Example 1
Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the invention.
With reference to fig. 1 to fig. 3, a thin-shell structure formwork system construction method based on the BIM technology provided by the embodiment of the present invention includes:
s1: and establishing a dome BIM three-dimensional model.
S2: a solid template model of a dome BIM three-dimensional model is printed by adopting a 3D printing technology, and comprises a dome model and a template model with the manufacturing ratio of 1: 1000.
S3: and determining the distribution positions of the action points of the formwork system based on the solid template model.
S4: and building a dome dragon skeleton body based on the dome BIM three-dimensional model and the action point distribution position of the mold frame system.
S5: deepening the dome template based on the dome BIM three-dimensional model, and paving the deepened dome template on the dome dragon skeleton body.
S6: and performing segmented pouring on the built dome formwork system to form a dome concrete member.
S7: and carrying out engineering quantity statistics on the dome BIM three-dimensional model based on the BIM technology, wherein the engineering quantity statistics comprises the engineering quantity statistics of a template, a dome dragon framework body and concrete of the dome BIM three-dimensional model.
Specifically, the step S1 of establishing the dome BIM three-dimensional model further includes:
s11: establishing a dome three-dimensional space coordinate system, which specifically comprises the following steps:
and establishing a dome three-dimensional space coordinate system by using Revit based on a BIM technology. And establishing a dome three-dimensional space coordinate system by taking the circle center connecting line of the latitudinal concentric circles of the dome as the Z axis of the space coordinate system, taking the plane of the two-layer structure as the transverse coordinate axis as the X axis and taking the plane of the two-layer structure as the longitudinal coordinate axis as the Y axis. S12: and calculating control points and control lines of each construction plane of the dome based on the three-dimensional space coordinate system of the dome.
The dome three-dimensional space coordinate system established in the step S11 is used for positioning the positions of the steel bar keels, in order to meet the supporting requirements and achieve smooth arc lines on the inner surface, the steel bar keels are arranged at the interval of 300mm (350 mm locally) between the longitudinal coordinate axes through Revit software calculation, control points of each construction plane are set out in a model, control lines of each stage are released in each stage in the construction process, and red paint is used as a striking mark. And meanwhile, the size of the member at each stage of the site is rechecked according to the dome BIM three-dimensional model, and the position of the main keel on the inner wall of the sphere is further controlled.
S13: and determining the position of a main keel of the dome according to the control points and the control lines, and performing construction simulation on the dome by combining the construction plan and the process flow of the dome to generate a BIM (building information modeling) three-dimensional model of the dome.
Before engineering construction, a construction plan, a process flow and the like are combined to BIM software for construction simulation, the position of a main keel of a dome is determined according to a control point and a control line, and a dome BIM three-dimensional model is generated. By carrying out construction simulation on the dome project and matching with rendering and roaming, the real scene feeling is shown to managers and workers, various working procedures of construction are reflected, the construction sequence of each specialty is conveniently coordinated, team entrance construction is organized in advance, equipment, a field, turnover materials and the like are prepared. By carrying out on-site video detection on a construction site, the problems of potential safety hazards and potential quality hazards in the construction process are early warned, and reworking and rectification are reduced. In addition, the project amount is inquired in real time by combining BIM, and a labor, material and mechanical consumption plan is reasonably arranged.
Specifically, step S2 is to print the dome and its template model by using 3D technology, where 3D printing is a technology of constructing an object by using an adhesive material such as powdered metal or plastic and printing layer by layer on the basis of a digital model file. Drawing a model of the dome, and making 1:1000 physical templates. Through dome and template 3D printing model, can be used to know the dome spatial relationship, the visual analysis support system action point distribution position effectively improves work efficiency. Meanwhile, the 3D printing model is also used for explaining the structural characteristics of all parts of the dome in the construction bottom-intersecting process, and is visual and easy to understand.
Specifically, the step S4 of building the dome dragon skeleton body based on the dome BIM three-dimensional model and the action point distribution position of the skeleton system further includes:
s41: and according to the distribution position of the action points of the mould frame system, building a dome template support by taking the z axis of the space coordinate system of the dome BIM three-dimensional model as the center. The dome formwork support adopts a fastener type full scaffold, the space between the vertical rods of the dome formwork support is 900mm multiplied by 900mm, and the step distance of the support body is 600 mm.
S42: a plurality of encryption cross rods are bound between two outermost straddle posts of the dome formwork support, and a plurality of encryption vertical posts are bound at the top of the formwork support.
In order to effectively connect the framework body of the dome dragon and the dome template support, according to the characteristics of different heights and different radiuses of the sphere, the encryption cross rods with different lengths are added around the two outermost straddle rods of the support, the step pitch is adjusted to be 300mm, so that the arc-shaped reinforcing steel bars are reinforced, the encryption vertical rods are added at the top, and the encryption cross rods are encircled into a # -shape, so that the top internal mold is convenient to lay.
S43: the steel bars phi 20 which are easy to bend are welded and bound to form the arched roof keel frame body, and the arched roof keel frame body is fixedly connected with the dome template support, the encrypted transverse rods and the encrypted vertical rods on the dome template support respectively, so that the accuracy of supporting action and control of the radius of the plane of the dome with different heights is met, and the curve of the inner surface of the dome after molding is smooth. The method specifically comprises the following steps:
s431: the diameters of latitudinal arc-shaped reinforcing steel bars corresponding to the encrypted cross bars with different heights are measured according to the dome BIM three-dimensional model, the latitudinal arc-shaped reinforcing steel bars with the corresponding diameters are fully welded to the dome template support, and the latitudinal arc-shaped reinforcing steel bars are welded to the latitudinal arc-shaped reinforcing steel bars according to the curvature change trend of the latitudinal arc-shaped reinforcing steel bars in 48 equal parts, so that the dome main keel frame body is formed. The integrity of the main keel frame body of the dome and the strength of a supporting system are ensured. Meanwhile, the engineering quantity is extracted through the BIM model, and a steel bar framework blanking list is manufactured.
S432: three layers of lathes connected by staggered heads of the air nail gun are used as secondary keels, and the secondary keels are bound to the main keel frame body of the dome along with the curvature change of the latitudinal arc-shaped steel bars of the steel reinforcement frame.
In order to ensure the smoothness of an arc line and the effectiveness of a template supporting system, the secondary keel adopts three-layer plate strip old template strips connected by staggered heads of a pneumatic nail gun to replace traditional battens, and the specification of the template strips adopts the width of 80mm and the length of 1500 mm. Utilize dome BIM three-dimensional model, can effectively discern template lath position and length, use No. 8 lines with the secondary joist along with the change ligature of framework of steel reinforcement latitudinal direction steel bar to the main joist on.
Specifically, the step S5 of deepening the dome template based on the dome BIM three-dimensional model, and laying the deepened dome template on the dome dragon skeleton body includes:
the method comprises the steps of dividing a dome template into 24 groups along the radial direction of a dome dragon framework body, dividing the dome template into 15 groups along the latitudinal direction of the dome dragon framework body to form 360 template splices, and then paving the template splices on the dome dragon framework body, wherein the template splices are isosceles trapezoids.
The dome template of the embodiment of the invention adopts a template with the thickness of 15mm, and because the inner surface and the outer surface of the dome are hyperboloids, the process that the template changes along with the curvature of the dome can be effectively considered through the BIM technology, 1:1 the template size of laying out is more reasonable, with template equidistribution 24 parts through length lay in the construction, 15 are cut apart into to the radial segmentation of template, process into the trapezoidal of the slight radian in both waists limit, and the sponge rubber is added in the template concatenation space, guarantees concrete surface shaping quality, and the external mold treats that the reinforcement finishes the back, carries out the spelling with the centre form same mode.
Specifically, step S6 is to perform segmented casting on the built dome formwork system to form the dome concrete member, and includes:
the method comprises the following steps of pouring a dome formwork system in three sections, wherein pouring is performed at the height of one third of the construction, a first pouring section and a second pouring section are both poured by self-compacting concrete bilateral closed formworks, a third pouring section is poured by an inclined roof pouring mode, three-section water stopping bolts are arranged in the first pouring section and the second pouring section and used for controlling the thickness of a dome body and manufacturing a dome to prevent water, and finally a dome concrete member is formed.
The concrete use amount of each construction stage can be quickly calculated in the process of building the construction model, and the use of the on-site concrete is effectively controlled. Dome thickness under the different heights is deepened through dome BIM three-dimensional model, adopts the spheroidal thickness of three-section stagnant water screw rod intermediate lever length control, makes the stagnant water screw rod intermediate lever of corresponding length, under the condition that does not increase other processes, can guarantee the concrete of dome from waterproof, can effectively control the wall thickness again.
Example 2
With reference to fig. 4, an embodiment of the present invention provides a thin-shell structure formwork system construction management system based on a BIM technique, including:
and the BIM modeling unit 1 is used for building a dome BIM three-dimensional model. The method is based on the BIM technology, the Revit is used for building a dome three-dimensional construction model, construction plane control points are set out through BIM lofting, and the dome BIM three-dimensional model is built to perform on-site pre-simulation.
And the 3D printing unit 2 is used for printing a solid template model of the dome BIM deepening model, and comprises a dome model and a template model. By 3D printing technique, make 1:1000 entity model, in the scheme research process, utilize dome and interior template 3D to print the model, understand the dome spatial relationship, the visual analysis support system action point distribution position effectively improves work efficiency.
And the model deepening unit 3 is used for deepening the dome BIM three-dimensional model according to the printed entity template model to obtain the dome BIM deepening model. The vault construction scheme based on BIM technique adopts the mode of plank sheathing concatenation to carry out the template and erects, and the template unloading is accurate after the deepening, and more traditional design plastic formwork low price, easy operation assembles the convenience, and convenient for material collection, and the recoverable secondary of template uses.
And the engineering quantity counting unit 4 is used for automatically counting the template of the dome BIM three-dimensional model, the dome dragon skeleton body and the concrete engineering quantity. Because the outer surface of the dome is a variable-curvature curved surface, the calculation of engineering measurement is complex and time-consuming, and the accuracy of the calculation result is not high. According to the embodiment of the invention, the entity model is drawn through the BIM technology, and the geometric data is input into the model, so that the engineering quantity can be automatically counted. And (3) processing and calculating the template, the skeleton body and the concrete engineering quantity of the dome BIM three-dimensional model through the geometrical data of the software. The limitation of the traditional construction engineering quantity is broken through, and the engineering quantity calculation is more transparent, ordered, reasonable and accurate.
And the construction period deepening unit 5 is used for deepening each construction process, and performing self-adaptive distribution and scheduling on the work of site materials, personnel and machinery by identifying the site construction condition. The construction procedures are deepened through the BIM technology, the site construction condition is rapidly identified, the work arrangement of site materials, personnel and machinery in the next step is made in time, the work efficiency is effectively improved, and the construction period is shortened.
In summary, according to the thin-shell structure formwork system construction method and management system based on the BIM technology, the dome BIM three-dimensional model is built, the solid template is printed in a 3D mode, the dome construction process is simulated, then the dimensions of the inner template and the outer template of the dome are accurately set out through the model, the scaffold is arranged, the engineering quantity is counted, the construction process management is carried out, and the effects of accurate blanking, low cost, accurate positioning of hyperboloid construction precision and high dome forming quality are finally achieved. The method effectively ensures the construction quality, has obvious technical and economic benefits, shortens the construction period by deepening work, saves labor, reduces the waste of turnover materials, has better molding quality, reduces the later polishing maintenance, also reduces the later waterproof leakage maintenance problem and effectively reduces the engineering cost.
The concepts, principles and concepts of the invention have been described above in detail in connection with specific embodiments (including examples and illustrations). It will be appreciated by persons skilled in the art that embodiments of the invention are not limited to the specific forms disclosed above, and that many modifications, alterations and equivalents of the steps, methods, apparatus and components described in the above embodiments may be made by those skilled in the art after reading this specification, and that such modifications, alterations and equivalents are to be considered as falling within the scope of the invention. The scope of the invention is only limited by the claims.
Claims (10)
1. A thin-shell structure formwork system construction method based on a BIM technology is characterized by comprising the following steps:
establishing a dome BIM three-dimensional model;
printing an entity template model of the dome BIM three-dimensional model by adopting a 3D printing technology;
determining the distribution positions of action points of the formwork system based on the entity template model;
building a dome dragon skeleton body based on the dome BIM three-dimensional model and the action point distribution position of the skeleton system;
deepening a dome template based on the dome BIM three-dimensional model, and paving the deepened dome template on the dome dragon skeleton body;
the built dome formwork system is poured in sections to form a dome concrete member;
and carrying out engineering quantity statistics on the dome BIM three-dimensional model based on a BIM technology, wherein the engineering quantity statistics comprises the engineering quantity statistics of a template, a dome dragon framework body and concrete of the dome BIM three-dimensional model.
2. The construction method of the thin-shell structure formwork system based on the BIM technology as claimed in claim 1, wherein the building of the dome BIM three-dimensional model comprises:
establishing a dome three-dimensional space coordinate system;
calculating control points and control lines of each construction plane of the dome based on the three-dimensional space coordinate system of the dome;
and determining the position of a main keel of the dome according to the control points and the control lines, and performing construction simulation on the dome by combining a construction plan and a process flow of the dome to generate a BIM (building information modeling) three-dimensional model of the dome.
3. The BIM technology-based thin-shell structure formwork system construction method according to claim 2, wherein the establishing of the dome three-dimensional space coordinate system comprises:
and establishing a dome three-dimensional space coordinate system by taking the circle center connecting line of the latitudinal concentric circles of the dome as a Z axis, taking the plane of the two-layer structure as a transverse coordinate axis as an X axis and taking the plane of the two-layer structure as a longitudinal coordinate axis as a Y axis.
4. The BIM technology-based thin-shell structure formwork system construction method as claimed in claim 1, wherein the solid template model comprises a dome model and a formwork model manufactured in a ratio of 1: 1000.
5. The construction method of the thin-shell structure formwork system based on the BIM technology as claimed in claim 1, wherein the building of the dome keel frame body based on the dome BIM three-dimensional model and the action point distribution position of the formwork system comprises:
according to the distribution position of the action points of the mould frame system, a dome template support is built by taking the z axis of the space coordinate system of the dome BIM three-dimensional model as the center;
binding a plurality of encryption cross rods between two outermost vertical spanning rods of the dome template support, and binding a plurality of encryption vertical rods at the top of the template support;
and welding and binding a phi 20 steel bar into a keel frame body of the dome, and fixedly connecting the keel frame body with the dome template support, and the encrypted cross rods and the encrypted vertical rods on the dome template support respectively.
6. The BIM technology-based thin-shell structure formwork system construction method according to claim 5, wherein the dome formwork support adopts a fastener type full framing scaffold, the space between the vertical rods of the dome formwork support is 900mm x 900mm, and the frame step distance is 600 mm.
7. The construction method of the thin-shell structure formwork system based on the BIM technology as claimed in claim 5, wherein the step of welding and binding a phi 20 steel bar into a keel frame body of the dome, and fixedly connecting the keel frame body with the dome formwork support, and the encrypted cross bars and the encrypted vertical bars on the dome formwork support respectively comprises the following steps:
measuring the diameters of latitudinal arc-shaped reinforcing steel bars corresponding to the encrypted cross bars with different heights according to the dome BIM three-dimensional model, fully welding the latitudinal arc-shaped reinforcing steel bars with the corresponding diameters onto the dome template support, and welding the latitudinal arc-shaped reinforcing steel bars onto the latitudinal arc-shaped reinforcing steel bars according to the curvature change trend of the latitudinal arc-shaped reinforcing steel bars in 48 equal parts to form a dome main dragon skeleton body;
three layers of lathes connected by staggered heads of a pneumatic nail gun are used as secondary keels, and the secondary keels are bound to the dome main keel frame body along with the curvature change of latitudinal arc-shaped reinforcing steel bars of the reinforcing steel bar frame.
8. The construction method of the thin-shell structure formwork system based on the BIM technology as claimed in claim 1, wherein deepening a dome formwork based on the dome BIM three-dimensional model and laying the deepened dome formwork on the dome dragon skeleton body comprises:
dividing the dome template into 24 groups along the radial direction of the dome dragon framework body, dividing the dome template into 15 groups along the latitudinal direction of the dome dragon framework body to form 360 template splices, and then laying the template splices on the dome dragon framework body, wherein the template splices are isosceles trapezoids.
9. The construction method of the thin-shell structure formwork system based on the BIM technology as claimed in claim 1, wherein the step of pouring the built dome formwork system in sections to form the dome concrete member comprises the following steps:
and pouring the dome formwork system in three sections, wherein pouring is performed at a height of one third of the construction height, the first pouring section and the second pouring section are both poured by adopting self-compacting concrete bilateral closed formworks, the third pouring section is poured by adopting an inclined roof pouring mode, and the first pouring section and the second pouring section are both provided with three-section water stop bolts for controlling the thickness of a dome body and manufacturing a dome for water prevention, so that a dome concrete member is finally formed.
10. A thin shell structure die carrier system construction management system based on BIM technique which characterized in that includes:
the BIM modeling unit is used for establishing a dome BIM three-dimensional model;
the 3D printing unit is used for printing a solid template model of the dome BIM deepening model, and comprises a dome model and a template model;
the model deepening unit is used for deepening the dome BIM three-dimensional model according to the printed entity template model to obtain a dome BIM deepening model;
the engineering quantity counting unit is used for automatically counting the template, the frame body and the concrete engineering quantity of the dome BIM three-dimensional model;
and the construction period deepening unit is used for deepening each construction process and carrying out self-adaptive distribution and scheduling on the work of site materials, personnel and machinery by identifying the site construction condition.
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