CN106844834B - Corrugated steel plate-concrete combined structure and computer control forming method thereof - Google Patents
Corrugated steel plate-concrete combined structure and computer control forming method thereof Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 229
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Abstract
The invention relates to a waveform steel plate concrete combined structure and a computer control forming method thereof, and the structure system can be used in a wall limb structure of a multi-story and high-rise structure, belonging to the technical field of building structures. The waveform steel plate concrete combined structure consists of two symmetrically placed waveform steel plates, an internally filled concrete, a concrete filled steel tube side column and a high-strength bolt for connecting the two waveform steel plates, wherein the structural arrangement mode comprises a straight shape, an L shape, a T shape, a Z shape or a cross shape, and the waveform steel plates comprise a trapezoid wave-folded mode, a rectangular wave-folded mode, a triangular wave-folded mode and a wave-folded mode; the invention relates to a computer-controlled stamping forming method which comprises a blanking system, a molding system, a stamping system, an assembling system and a welding system. The invention is an economic and efficient wall limb structure, has the advantages of high bearing capacity and material saving, can realize the batch standardized production of the waveform steel plates by using the computer-controlled stamping forming method, and has a promotion effect on the development of the fabricated building.
Description
Technical Field
The invention relates to a corrugated steel plate-concrete combined structure and a computer control forming method thereof, and the structure system is applied to a wall limb structure in a multi-story and high-rise structure, belonging to the technical field of building structures.
Background
(1) Application of wall limb structure
The wall limb structure is a shear wall structure system, is widely applied to multi-story and high-rise structures, is particularly suitable for residential structures, brings flexibility of house type arrangement, is deeply favored by architects, can avoid the phenomenon of dew beam and column caused by inconsistent widths of beam and column and wall bodies, which occurs when a frame structure is adopted in residential buildings, and can also solve the problem that the use and the appearance are influenced by exposure of beam and column nodes to indoor space. Particularly, the difficulty in the construction of the door and window holes and the filling wall caused by the arrangement and support in the steel frame structure is avoided. Therefore, innovative development of the wall limb structure is of great significance to promotion of residential industrialization, building industrialization and building assembly.
(2) Development of wall limb structure
The concrete wall limb structure is applied to multi-layer and high-rise building structures at the earliest time, and the structural model is widely applied at present, but the concrete wall limb structure has poor ductility due to the fact that the concrete has lower tensile strength and is easy to crack under the action of external load. Meanwhile, the concrete is subjected to on-site wet operation pouring, formwork support is needed, construction measures are high in cost, and the method does not accord with the development direction of industrial production and assembly buildings. Therefore, new high performance wall construction models are being sought.
The steel plate-concrete combined wall limb structure is developed after the concrete wall limb structure, and the two conditions of concrete wrapping by adopting a flat steel plate or steel plate wrapping by adopting concrete are adopted. For the combined structure of the concrete wrapped by the flat steel plate, the bolt is arranged on the inner side of the steel plate to ensure that the concrete and the steel plate work in coordination. However, the restraining effect of the two is not ideal, the restraining effect on the steel plates is lost after the concrete is cracked or destroyed, the flat steel plates also lose bearing capacity quickly because of losing the restraining, and the whole wall limb also loses bearing capacity and ductility. In terms of construction, during the concrete casting process, the outer steel plate itself cannot resist the casting thrust force generated by the concrete, so that an additional supporting structure must be provided to ensure the stability of the steel plate during the casting process. The wall limb structure of the concrete wrapping steel plate is widely applied as the built-in steel plate of the core tube in the high-rise mixed structure, and can effectively improve the bearing capacity and the ductility of the core tube. However, the interaction between the two is poor, for example, when the outside concrete is cracked and broken under the action of external force, the unconstrained steel plate can lose stability quickly. The template is arranged during concrete pouring, construction measures are complex, labor and time are wasted, and therefore, the template is not much applied to wall limb structures at present.
In recent years, another type of steel-concrete wall limb structure has been developed, and the wall limb structure is formed by adopting a series of hot rolled H-shaped steel or groove-shaped steel or L-shaped steel to be welded in a combined mode and then internally poured with concrete. Although the wall limb structure is favorable for industrial production, the welding amount is large, the construction cost and the construction period are increased, and the problems of residual stress and residual deformation of the structure after welding are outstanding. More importantly, the brittle nature of the weld formed by the weld and the heat affected zone makes the structure susceptible to brittle fracture under reciprocating loads, particularly in cold areas.
(3) Wave-shaped steel plate pressing forming method and computer-aided control technology
The waveform steel plate applied in the construction engineering has various types, is mainly applied to roofing and wall space enclosing structures of industrial plants, and is manufactured by adopting cold-rolled steel plates with the thickness not more than 1.5 mm. At present, a rolling mode is mostly adopted for the pressing forming method of the thin steel plate, and a plurality of groups of rollers are arranged for gradually rolling forming to the shape and the size required by design. For the corrugated steel plate applied to the wall limb structure, the thickness is generally between 4mm and 30mm, and the steel plate bears larger load at the moment, for example, the gradual press forming method adopting the multiple groups of rollers still needs special large tonnage and high power rolling equipment, and meanwhile, the press forming efficiency is greatly reduced, so that a new press forming method and a new control technology are required.
For the corrugated steel plate used for the wall limb structure, the pressing and assembling processes of the corrugated steel plate comprise operations such as pressing of the corrugated steel plate, assembling and positioning of the corrugated steel plate, bolt perforation, bolt tightening, side column welding, end sealing plate welding and the like, and the process is not realized on a full-automatic production line by adopting a computer-aided control forming technology at present.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a corrugated steel plate-concrete combined structure and a computer control forming method.
1. The corrugated steel plate-concrete combined structure is characterized by comprising two corrugated steel plates which are symmetrically placed, internally filled concrete, side columns and high-strength bolts for connecting the two corrugated steel plates, wherein the structural arrangement mode of the corrugated steel plate-concrete combined structure comprises a straight shape, an L shape, a T shape, a Z shape or a cross shape; the side column comprises a square steel tube type, an H-shaped steel type or a channel-shaped steel type; the corrugated steel plate comprises a trapezoid wave form, a rectangular wave form, a triangular wave form or a wave form; the two corrugated steel plates are connected by arranging mounting holes at the trough positions of the two corrugated steel plates for screws to pass through, and the mounting holes are uniformly distributed along the height direction; the connecting type of the corrugated steel plate comprises a gourd-shaped hole connecting type, a key-shaped hole connecting type, an expansion self-locking connecting type or a high-strength bolt connecting type.
2. The connecting mode of the gourd-shaped holes is that the gourd-shaped mounting holes are arranged on the corrugated steel plate, wherein the big holes of the gourd-shaped holes are arranged at the upper part and the small holes are arranged at the lower part, and the mounting process is as follows:
step 2.1, inserting a cylindrical screw rod and a circular limit sleeve into a gourd-shaped mounting hole through a large hole;
step 2.2, the cylindrical screw rod is dropped to the small hole end of the calabash-shaped hole, and the limitation of the waveform steel plate is realized through the circular limiting sleeve;
and 2.3, adding washers and nuts at two ends of the cylindrical screw rod, and tightening the nuts to apply pretightening force.
3. The key type hole connection mode is that a key type mounting hole is arranged on a corrugated steel plate, wherein a big hole of a middle hole is arranged at the bottom, a small hole is arranged at the top, and the mounting process is as follows:
step 3.1, inserting the screw rod with the limit clamp into the key type mounting hole, wherein the upper limit clamp of the screw rod is positioned at the upper end;
step 3.2, rotating the screw rod with the limit clamp around the axis by 180 degrees, wherein the upper limit clamp of the screw rod is positioned at the lower end, and limiting the waveform steel plate through the limit clamp;
and 3.3, adding washers and nuts at two ends of the screw rod with the limit clamp, and tightening the nuts to apply pretightening force.
4. The expansion self-locking connection mode is that a circular mounting hole is formed in a corrugated steel plate, connection is achieved by adopting a metal expansion sleeve with threads in the middle and variable-section screws connected to two ends of the metal expansion sleeve, gaps are formed in two ends of the metal expansion sleeve along the axial direction, and the mounting process is as follows:
Step 4.1, inserting a metal expansion sleeve and variable-section screws connected to two ends of the metal expansion sleeve into the circular mounting holes;
and 4.2, adding washers and nuts on the variable-section screw rods at the two ends, tightening the nuts to apply pretightening force, and extruding the side wall of the metal expansion sleeve by the screw rods from the inside along with the screwing of the screw rods, so that the sections of the two end parts of the metal expansion sleeve are enlarged, and limiting the corrugated steel plate is realized.
5. The high-strength bolt connection mode is that a circular mounting hole is arranged on a corrugated steel plate, an internal threaded sleeve and high-strength bolts connected to two ends of the internal threaded sleeve are adopted, and the mounting process is as follows:
step 5.1, tightly attaching the internally threaded sleeve to the corrugated steel plate on one side, and screwing the internally threaded sleeve into the high-strength bolt on one side;
and 5.2, covering the other corrugated steel plate, and screwing the high-strength bolt on the other side.
6. The computer control forming method of the corrugated steel plate-concrete combined structure is characterized by comprising a blanking system, a molding system, a stamping system, an assembling system and a welding system, wherein the forming process is as follows:
6.1, blanking system
The blanking system comprises a blanking calculation module and a blanking machine; the molding process associated with the blanking system is as follows:
Step 6.1.1, inputting geometrical parameters of the plate, including: plate height h, plate spacing b, vertical bolt distance d, number of wave troughs n, wave trough width l 0 Amplitude a;
step 6.1.2, selecting a plate type and inputting a plate type parameter corresponding to the plate type;
step 6.1.3, calculating by a blanking calculation module to obtain the size of the blanking plate: width w, length s;
and 6.1.4, finishing the plate blanking of the corrugated steel plate 1 and the corrugated steel plate 2 through a blanking machine.
6.2 moulding System
The molding system comprises a mold calculation module and a mold forming machine; the molding process associated with the molding system is as follows:
step 6.2.1, calculating to obtain a die shape function m (x) according to the geometrical parameters of the plate through a die calculation module;
and 6.2.2, forming the mold according to the mold shape function m (x) by a mold forming machine.
6.3 stamping System
The punching system comprises a screw hole positioning module, a punching lathe and a pulley transfer machine; the forming process associated with the stamping system is as follows:
step 6.3.1, calculating the number of mounting holes and the coordinates of the mounting holes according to the geometric parameters of the plate through the screw hole positioning module;
step 6.3.2, stamping and forming the corrugated steel plate 1 and the corrugated steel plate 2 by using a die according to the coordinates of the mounting hole by using a stamping lathe;
And 6.3.3, transferring the formed corrugated steel plate 1 and the formed corrugated steel plate 2 to an assembling system through a pulley transfer machine.
6.4, assembly System
The assembling system comprises a magnetic mechanical arm, a laser alignment system and a bolt mounting system; the molding process associated with the splicing system is as follows:
step 6.4.1, adsorbing the corrugated steel plate 2 and overturning by a magnetic manipulator;
step 6.4.2, aligning the corrugated steel plate 1 and the corrugated steel plate 2 through a laser alignment system and ensuring that the parallel distance is b;
step 6.4.3, realizing the transportation, the installation and the pre-tightening force application of the bolts according to the number and the coordinates of the bolts through a bolt installation system;
and 6.4.4, transferring the concrete filled steel tube side column and assembling the concrete filled steel tube side column in alignment with the corrugated steel plate system.
6.5 welding System
The welding system comprises a scanning manipulator and an automatic welding gun; the molding process associated with the welding system is as follows:
step 6.5.1, scanning a welding path between the corrugated steel plate and the side column through a scanning manipulator;
6.5.2, welding is realized through an automatic welding gun;
step 6.5.3, adsorbing and overturning the steel plate and the side column system by using a magnetic manipulator;
and 6.5.4, scanning a welding path again through a scanning manipulator, and realizing the welding of the other side through an automatic welding gun, thereby finally completing the molding of the corrugated steel plate system with the side column.
7. The computer control molding method utilizes the blanking calculation module to calculate the blanking size, and the calculation process is as follows:
step 7.1, inputting geometrical parameters of the plate, including: plate height h, number of wave troughs n, wave trough width l 0 Amplitude a;
step 7.2, selecting a plate type, namely: trapezoid wave folding; rectangular wave folding; triangular wave folding; wave-shaped;
step 7.3, inputting plate type parameters according to different plate types:
step 7.3.1, for the trapezoid wave form, inputting the wave crest width l 1 And single hypotenuse horizontal width l 2 ；
Step 7.3.2, for rectangular wave form, inputting wave crest width l 3 ；
Step 7.3.3, for triangle wave fold pattern, input single hypotenuse horizontal width l 4 ；
Step 7.3.4, for wave pattern, input a single wave horizontal width l 5 ；
Step 7.4, obtaining a plate length correction coefficient considering the plastic influence according to different plate types, wherein the calculation of the coefficient adopts an output result of a die calculation module; alpha i Correcting the coefficient for the length of the plate;
step 7.5, calculating the blanking length according to different plate types:
step 7.5.1, for the trapezoid wave pattern, the blanking length is calculated according to the following formula:
step 7.5.2, for the rectangular wave pattern, the blanking length is calculated as follows:
s＝α 2 ·n(l 0 +l 3 +a)
Step 7.5.3, for triangle wave fold type, the blanking length is calculated as follows:
step 7.5.4, for the wave pattern, the feed length is calculated as follows:
step 7.6, outputting the size of the blanking: blanking width w, blanking length s.
8. The computer control molding method utilizes the die calculation module to calculate a die shape function and a plate length correction coefficient, and the calculation process is as follows:
step 8.1, inputting parameters, including: height h of plateAmplitude a, number of wave troughs n, wave trough width l 0 ；
Step 8.2, selecting a plate type, and inputting plate type parameters according to different plate types; setting a shaping function error norm limit tol;
step 8.3, generating a target shape function f (x) according to the target plate shape size;
step 8.4, setting an iteration variable i=0; initializing a mold shape function:
m 0 (x)＝f(x)
step 8.5, obtaining the steel plate in the die m through a finite element calculation module secondarily developed by ABAQUS i (x) Elastic spring back function Deltaf under action i (x)；
Step 8.6, obtaining the plate length correction coefficient alpha i ；
Step 8.7, calculating an error shape function according to the following formula:
e i (x)＝m i (x)-Δf i (x)-f(x)
step 8.8, calculating the error norm of the shape function according to the following formula:
step 8.9, judging whether the error norm of the shape function is lower than the error limit value according to the following formula:
||e i (x)||<tol
Step 8.10, if the formula in step 8.9 is not established, indicating that the error exceeds the limit value, and returning to step 8.5 for iteration after calculation according to the following formula;
i＝i+1
m i+1 (x)＝m i (x)+Δf i (x)
step 8.11: if the equation in the step 8.9 is satisfied, indicating that the error meets the limit requirement, outputting a die shape function and a plate length correction coefficient according to the following steps:
m(x)＝m i (x)
α＝α i
9. the computer control forming method utilizes the screw hole positioning module to calculate the total number of bolts and the coordinates of the bolts, and the calculation process is as follows:
step 9.1, inputting geometrical parameters of the plate, including: plate height h, vertical bolt distance d, number of wave troughs n, wave trough width l 0 ；
Step 9.2, selecting a plate type, namely: trapezoid wave folding; rectangular wave folding; triangular wave folding; wave-shaped;
step 9.3, inputting plate type parameters according to different plate types:
step 9.3.1, for the trapezoidal waveform, the peak width l is input 1 And single hypotenuse horizontal width l 2 ；
Step 9.3.2, for the rectangular wave form, the peak width l is input 3 ；
Step 9.3.3, for triangle wave fold pattern, input single hypotenuse horizontal width l 4 ；
Step 9.3.4, for wave pattern, input a single wave horizontal width l 5 ；
Step 9.4, calculating bolt coordinates according to different plate types:
Step 9.4.1, for the trapezoidal wave fold type, the bolt coordinates are:
step 9.4.2, for the rectangular wave fold type, the bolt coordinates are:
step 9.4.3, for the triangle wave fold type, the bolt coordinates are:
step 9.4.4, for wave patterns, the bolt coordinates are:
step 9.5, calculating the total number of bolts according to the following formula:
step 9.6, outputting parameters: bolt coordinate (x) i,j ,y i,j ) Total number of bolts n b 。
The waveform steel plate-concrete combined structure and the computer control forming method thereof provided by the invention can be applied to wall limb structures in multi-story and high-rise structures, and have the remarkable advantages that:
(1) Corrugated steel plate-concrete combined structure and advantages
The wall limb structure is usually composed of a plurality of wall limbs, each wall limb is composed of corrugated steel plates wrapped with concrete, outer steel plates are connected with built-in concrete through bolts of extension rods, and an inner locking device is arranged on the inner side of a screw rod to accurately control and adjust the inner distance between the outer steel plates. And after the concrete is poured and solidified, applying a pretightening force to the split bolt to form a lateral constraint effect on the concrete, so that the design strength of the concrete is improved. Due to the waveform characteristics of the waveform steel plate, the waveform steel plate vertically arranged by the wave bands can effectively improve the vertical compression bearing capacity of the waveform steel plate. The buckling load under the action of vertical pressure and shearing force is improved, and the compression and shearing buckling load of the buckling load can be several times or even tens times higher than that of a flat steel plate with the same size. The corrugated steel plate is restrained by concrete, so that the inward buckling deformation of the corrugated steel plate is completely restrained by the concrete when the corrugated steel plate is pressed, bent and sheared and buckled, the outward deformation is effectively restrained by the split bolts, and the buckling load and the corresponding stability coefficient of the corrugated steel plate are greatly improved through the bidirectional restraining effect.
Compared with a flat steel plate, the compression and shearing bearing capacity of the corrugated steel plate is improved due to the corrugated characteristics of the corrugated steel plate, the stable bearing capacity of the corrugated steel plate is also improved due to the double constraint effect of concrete and a split bolt, and the compressive strength design value of the concrete is greatly improved due to the lateral constraint of the concrete by the steel plate and the pretensioning effect of the split bolt, wherein the three effects form a combined effect of 1+1+1 being more than 3. Therefore, the corrugated steel plate-concrete combined structure is an economical and efficient wall limb structure, has the advantages of high bearing capacity and material saving, and accords with the development characteristics of industrial production and assembled buildings.
In addition, when two corrugated steel plates are connected in a split bolt mode, the bolts can be used as rooting components of materials such as curtain wall plates and inner decorative plates, and the integration degree of a structural system is further improved.
(2) Computer control forming method and its advantages
In order to meet the requirements of industrial production and improve the compression molding and assembly efficiency of the corrugated steel plate, a full-automatic production line and a corresponding computer control molding method are provided, and the full-automatic production line consists of a blanking system, a molding system, a stamping system, an assembling system and a welding system. In order to improve the manufacturing precision and the automation degree of the production process, three calculation modules of a blanking calculation module, a die calculation module and a screw hole positioning module are arranged in the die.
The blanking system is used for accurately calculating the blanking size of the component according to different plate types, and further improving the calculation accuracy by considering the length correction coefficient generated due to the influence of plastic deformation; and meanwhile, the blanking system can finish blanking and transferring of the flat steel plate.
The molding system utilizes a built-in mold calculation module, and utilizes ABAQUS secondary development to obtain the distribution condition of the elasticity and the plastic deformation of the steel plate in the process of calculating and stamping by the finite element calculation module, and utilizes an iterative algorithm to realize the feedback and correction of manufacturing errors caused by the elastic deformation, so that a mold shape function considering the elastic deformation rebound correction is obtained by calculation, and the efficiency and the precision of mold manufacturing are ensured to the greatest extent.
And the punching system accurately calculates the number and coordinates of screw holes through a built-in screw hole positioning module, and efficiently completes the punching forming and transferring of the corrugated plate.
The assembling system integrates a magnetic mechanical arm and a laser alignment system, and can realize the overturning, alignment and distance control of the plate; and the bolt installation system is integrated, and the accuracy and the efficiency of the installation bolts are ensured by utilizing the related data output by the screw hole positioning system.
The welding system integrates the scanning manipulator and the automatic welding gun, and can effectively complete the overturning and double-sided welding of the plate by matching with the magnetic manipulator, so that the automatic production of the whole process is realized.
The computer control forming method can adapt to the change of multiple waveform types and multiple sizes of the waveform steel plate, can realize the accurate press forming, automatic assembly forming, side column welding operation and the like of the steel plate, and the whole operation process is completely controlled by a computer and is completed on an automatic production line. The method has important significance for realizing standardized manufacturing and batch production of the corrugated steel plate, saving the cost and improving the production efficiency, and promoting the industrialized production and developing the fabricated building.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1-1 is a schematic diagram of structural arrangement of a corrugated steel plate-concrete composite structure: a straight-line arrangement is employed.
Fig. 1-2 are schematic views of structural arrangements of corrugated steel plate-concrete composite structures: an L-shaped arrangement is employed.
Fig. 1-3 are schematic views of structural arrangements of corrugated steel plate-concrete composite structures: a T-shaped arrangement is employed.
Fig. 1-4 are schematic views of structural arrangements of corrugated steel plate-concrete composite structures: a zigzag arrangement is employed.
Fig. 1-5 are schematic views of structural arrangements of corrugated steel plate-concrete composite structures: by cross-type arrangement
Fig. 2-1 is a schematic diagram of a plate type of a corrugated steel plate-concrete composite structure: a trapezoidal wave fold type is adopted.
Fig. 2-2 is a schematic diagram of a plate type of a corrugated steel plate-concrete composite structure: a rectangular wave fold type is adopted.
Fig. 2-3 are schematic plate type diagrams of corrugated steel plate-concrete composite structures: a triangular wave fold type is adopted.
Fig. 2-4 are schematic plate type diagrams of corrugated steel plate-concrete composite structures: a wave pattern is used.
Fig. 3-1 is a schematic diagram of a side column pattern of a corrugated steel plate-concrete composite structure: adopting square steel tube type.
Fig. 3-2 is a schematic diagram of a side column pattern of a corrugated steel plate-concrete composite structure: and H-shaped steel is adopted.
Fig. 3-3 are schematic side column type diagrams of corrugated steel plate-concrete composite structures: and adopting a groove-shaped steel type.
Fig. 4 is an elevation view of a corrugated steel plate in a corrugated steel plate-concrete composite structure.
Fig. 5-1 is a schematic diagram of a bolt connection form of a corrugated steel plate-concrete combined structure: adopts a gourd-shaped hole connection mode.
Fig. 5-2 is a schematic diagram of a bolt connection form of a corrugated steel plate-concrete combined structure: adopts a key type hole connection mode.
Fig. 5-3 are schematic views of bolt connection forms of corrugated steel plate-concrete combined structures: adopts an expansion self-locking connection mode.
Fig. 5-4 are schematic views of bolt connection forms of corrugated steel plate-concrete combined structures: adopts a high-strength bolt connection mode.
FIG. 6 is a block diagram of steps of a computer controlled molding method.
FIG. 7-1 is a block diagram of the steps of a computing module: module one: and a blanking calculation module.
Fig. 7-2 is a block diagram of the steps of a computing module: and a second module: and a die calculation module.
Fig. 7-3 are block diagrams of steps of a computing module: and a third module: and a screw hole positioning module.
FIG. 8-1 is a graph showing a comparison of the stress performance of a corrugated steel sheet and a flat steel sheet: comparison of shear elastic buckling stress.
Fig. 8-2 is a graph showing a comparison of the stress performance of a corrugated steel sheet and a flat steel sheet: comparison of compressive elastic buckling stress.
Fig. 8-3 are graphs comparing the stress performance of a corrugated steel plate and a flat steel plate: comparison of out-of-plane curved cylindrical stiffness.
Fig. 9-1 is an elastoplastic stress performance comparison of a corrugated steel plate-concrete composite structure with a flat steel plate-concrete composite structure: and comparing load displacement curves in the elastoplastic whole process analysis.
Fig. 9-2 is an elastoplastic stress performance comparison of a corrugated steel plate-concrete composite structure with a flat steel plate-concrete composite structure: comparison of von Mises stress distribution and out-of-plane deformation distribution was analyzed throughout elastoplastics.
In the figure:
1-a corrugated steel sheet, wherein: 1-1, a trapezoid pattern; 1-2-rectangular pattern; 1-3-triangle pattern; 1-4-wave pattern;
2-concrete;
3-side column, wherein: 3-1, square steel tube type; 3-2-H-shaped steel type; 3-3, groove-shaped steel type;
4-mounting hole, wherein: 4-1, a gourd-shaped hole; 4-2-a key-type hole; 4-3-circular holes;
5-screw, wherein: 5-1—a cylindrical screw; 5-2, a screw rod with a limit clamp; 5-3, a variable cross-section screw; 5-4, high-strength bolts;
6—a limit sleeve, wherein: 6-1, a circular limiting sleeve; 6-2-a metal expansion sleeve; 6-3, an internally threaded sleeve;
7, a nut;
8-a gasket.
Detailed Description
The following describes specific embodiments of the present patent with reference to fig. 1-1 to 9-2.
As shown in fig. 1-1 to 1-5, a corrugated steel plate-concrete combined structure is composed of two corrugated steel plates 1, internally filled concrete 2, concrete-filled steel tube side columns 3 and high-strength bolts 5 for connecting the two corrugated steel plates;
as shown in fig. 1-1 to 1-5, the structural arrangement pattern of the corrugated steel plate-concrete composite structure comprises a straight shape (fig. 1-1), an L shape (fig. 1-2), a T shape (fig. 1-3), a Z shape (fig. 1-4) or a cross shape (fig. 1-5);
As shown in fig. 2-1 to 2-4, the corrugated steel plate-concrete composite structure is characterized in that the corrugated steel plate 1 comprises a trapezoid wave pattern 1-1, a rectangular wave pattern 1-2, a triangular wave pattern 1-3 or a wave pattern 1-4;
as shown in fig. 3-1 to 3-3, the corrugated steel plate-concrete composite structure is characterized in that the side column 3 comprises a square steel pipe type 3-1, an H-shaped steel type 3-2 or a channel-shaped steel type 3-3;
as shown in fig. 4, the corrugated steel plate-concrete composite structure is characterized in that the two corrugated steel plates 1 are connected by arranging mounting holes 4 at the trough positions thereof for screws 5 to pass through, and the mounting holes 4 are uniformly arranged along the height direction; the connecting type of the corrugated steel plate 1 comprises a gourd-shaped hole connecting type, a key-shaped hole connecting type, an expansion self-locking connecting type or a high-strength bolt connecting type, and the respective mounting processes are as follows:
(1) Gourd shaped hole connection (figure 5-1)
The corrugated steel plate 1 is provided with a calabash-shaped mounting hole 4-1, wherein the big hole and the small hole of the calabash-shaped hole 4-1 are arranged at the upper part and the lower part, and the mounting process is as follows:
step 1-1: the cylindrical screw rod 5-1 and the circular PVC limit sleeve 6-1 are inserted into the gourd-shaped mounting hole 4-1 through a big hole;
Step 1-2: the cylindrical screw rod 5-1 is dropped to the small hole end of the calabash-shaped mounting hole 4-1, and the limitation of the corrugated steel plate 1 is realized through the circular PVC limiting sleeve 6-1;
step 1-3: washers 8 and nuts 7 are added to both ends of the cylindrical screw 5-1, and the nuts 7 are tightened to apply a pre-tightening force.
(2) Key type hole connection (FIG. 5-2)
Key-type mounting holes 4-2 are arranged on the corrugated steel plate 1, wherein the large holes of the key-type holes are arranged at the bottom, and the small holes are arranged at the top, and the mounting process is as follows:
step 2-1: inserting the screw 5-2 with the limit clamp into the key type mounting hole 4-2, wherein the limit clamp on the screw 5-2 is positioned at the upper end;
step 2-2: the screw 5-2 with the limiting clamp rotates 180 degrees around the axis of the screw, at the moment, the upper limiting clamp of the screw 5-2 is positioned at the lower end, and the limiting of the corrugated steel plate 1 can be realized through the limiting clamp;
step 2-3: washer 8 and nut 7 are added at two ends of screw 5-2 with limit clamp, and nut 7 is screwed down to apply pretightening force.
(3) Expansion self-locking connection (figures 5-3)
The corrugated steel plate 1 is provided with a circular mounting hole 4-3, connection is realized by adopting a metal expansion sleeve 6-2 with threads in the middle and variable-section screws 5-3 connected to two ends of the metal expansion sleeve, two ends of the metal expansion sleeve 6-2 are provided with gaps along the axial direction, and the mounting process is as follows:
Step 3-1: inserting a metal expansion sleeve 6-2 and variable cross-section screws 5-3 connected to both ends thereof into the circular mounting holes 4-3;
step 3-2: the washers 8 and the nuts 7 are added on the variable-section screw rods 5-3 at the two ends, the nuts 7 are screwed to apply pretightening force, the screw rods 5-3 squeeze the side wall of the metal expansion sleeve 6-2 from the inside along with the screwing of the screw rods 5-3, and the sections of the two end parts of the metal expansion sleeve 6-2 are enlarged, so that the limit of the corrugated steel plate 1 is realized.
(4) High strength bolt connection (figures 5-4)
The corrugated steel plate 1 is provided with a circular mounting hole 4-3, the connection is realized by adopting an internal threaded sleeve 6-3 and high-strength bolts 5-4 connected to the two ends of the corrugated steel plate, and the mounting process is as follows:
step 4-1, tightly attaching the internal thread sleeve 6-3 to the corrugated steel plate 1 at one side, and screwing the high-strength bolt 5-4 at one side into the corrugated steel plate;
and 4-2, covering the other corrugated steel plate 1 and screwing the other high-strength bolt 5-4.
As shown in fig. 6, the method for forming the corrugated steel plate-concrete composite structure by computer control is characterized by comprising a blanking system, a molding system, a punching system, an assembling system and a welding system, wherein the forming process is as follows:
(1) Discharging system
The blanking system comprises a blanking calculation module and a blanking machine; the molding process associated with the blanking system is as follows:
Step 1-1: geometric parameter of input plateA number comprising: plate height h, plate spacing b, vertical bolt distance d, number of wave troughs n, wave trough width l 0 Amplitude a;
step 1-2: selecting a plate type and inputting a plate type parameter corresponding to the plate type;
step 1-3: calculating through a blanking calculation module, and obtaining the size of the blanking plate: width w, length s;
step 1-4: and (5) finishing plate blanking of the corrugated steel plate 1 and the corrugated steel plate 2 through a blanking machine.
(2) Molding system
The molding system comprises a mold calculation module and a mold forming machine; the molding process associated with the molding system is as follows:
step 2-1: calculating a die shape function m (x) according to the geometric parameters of the plate through a die calculation module;
step 2-2: and forming the mold according to the mold shape function m (x) by a mold forming machine.
(3) Stamping system
The punching system comprises a screw hole positioning module, a punching lathe and a pulley transfer machine; the forming process associated with the stamping system is as follows:
step 3-1: calculating the number of the mounting holes and the coordinates of the mounting holes according to the geometric parameters of the plate through the screw hole positioning module;
step 3-2: stamping the corrugated steel plate 1 and the corrugated steel plate 2 by using a die according to the coordinates of the mounting hole by using a stamping lathe;
Step 3-3: and transferring the formed corrugated steel plate 1 and the formed corrugated steel plate 2 to an assembling system through a pulley transfer machine.
(4) Assembly system
The assembling system comprises a magnetic mechanical arm, a laser alignment system and a bolt mounting system; the molding process associated with the splicing system is as follows:
step 4-1: adsorbing the corrugated steel plate 2 and overturning by a magnetic manipulator;
step 4-2: aligning the corrugated steel plate 1 and the corrugated steel plate 2 through a laser alignment system and ensuring that the parallel distance is b;
step 4-3: through the bolt installation system, the transportation, the installation and the pre-tightening force application of the bolts are realized according to the number of the bolts and the coordinates of the bolts;
step 4-4: and transferring the steel pipe concrete side column and assembling the steel pipe concrete side column and the corrugated steel plate system in an aligned manner.
(5) Welding system
The welding system comprises a scanning manipulator and an automatic welding gun; the molding process associated with the welding system is as follows:
step 5-1: scanning a welding path between the corrugated steel plate and the side column through a scanning manipulator;
step 5-2: welding is achieved through an automatic welding gun;
step 5-3: adsorbing and overturning the steel plate and the side column system by using a magnetic manipulator;
step 5-4: and scanning the welding path by the scanning manipulator again, and realizing the welding of the other side by the automatic welding gun, thereby finally completing the molding of the corrugated steel plate system with the side columns.
As shown in fig. 7-1, the computer controlled forming method is characterized in that the first module: the blanking calculation module can realize the calculation of blanking size, and the calculation process is as follows:
step 1: inputting geometric parameters of the plate, comprising: plate height h, number of wave troughs n, wave trough width l 0 Amplitude a;
step 2: selecting a plate type, namely: trapezoid wave folding; rectangular wave folding; triangular wave folding; wave-shaped;
step 3: the plate type parameters are input according to different plate types:
step 3- (1): for the trapezoid wave form, the peak width l is input 1 And single hypotenuse horizontal width l 2 ；
Step 3- (2): for rectangular wave form, input wave crest width l 3 ；
Step 3- (3): for triangle wave fold pattern, single hypotenuse horizontal width l is input 4 ；
Step 3- (4): for wave patterns, a single wave horizontal width/is input 5 ；
Step 4: obtaining a plate length correction coefficient considering the plastic influence according to different plate types, wherein the calculation of the coefficient adopts a second module: outputting a result of the die calculation module;
step 5: the blanking length is calculated according to different plate types:
step 5- (1): for the trapezoidal wave pattern, the blanking length is calculated as follows:
step 5- (2): for the rectangular wave fold pattern, the blanking length is calculated as follows:
s＝α 2 ·n(l 0 +l 3 +a)
Step 5- (3): for the triangular wave-fold pattern, the blanking length is calculated as follows:
step 5- (4): for wave patterns, the blanking length is calculated as follows:
/>
step 6: outputting the blanking size: blanking width w, blanking length s.
As shown in fig. 7-2, the computer controlled forming method is characterized in that the second module: the die calculation module can calculate the die shape function and the plate length correction coefficient, and the calculation process is as follows:
step 1: input parameters, including: plate height h, amplitude a, number of wave troughs n, wave trough width l 0 ；
Step 2: selecting the plate type and inputting the plate type parameters according to different plate types; setting a shaping function error norm limit tol;
step 3: generating a target shape function f (x) according to the target plate shape size;
step 4: setting an iteration variable i=0; initializing a mold shape function:
m 0 (x)＝f(x)
step 5: obtaining the steel plate in the die m through a finite element calculation module secondarily developed by ABAQUS i (x) Elastic spring back function Deltaf under action i (x)；
Step 6: obtaining the length correction coefficient alpha of the plate i ；
Step 7: calculating an error shape function according to the following formula:
e i (x)＝m i (x)-Δf i (x)-f(x)
step 8: calculating a shape function error norm according to the following formula:
step 9: judging whether the error norm of the shape function is lower than the error limit value according to the following steps:
||e i (x)||<tol
Step 10: if the formula in the step 9 is not established, indicating that the error exceeds the limit value, and returning to the step 5 for iteration after calculation according to the following formula;
i＝i+1
m i+1 (x)＝m i (x)+Δf i (x)
step 11: if the equation in the step 9 is satisfied, the error meets the limit value requirement, and the die shape function and the plate length correction coefficient are output according to the following equation:
m(x)＝m i (x)
α＝α i
as shown in fig. 7-3, the computer-controlled molding method is characterized in that the module three: the screw hole positioning module can realize calculation of total number of bolts and bolt coordinates, and the calculation process is as follows:
step 1: inputting geometric parameters of the plate, comprising: plate height h, vertical bolt distance d, number of wave troughs n, wave trough width l 0 ；
Step 2: selecting a plate type, namely: trapezoid wave folding; rectangular wave folding; triangular wave folding; wave-shaped;
step 3: the plate type parameters are input according to different plate types:
step 3- (1): for the trapezoid wave form, the peak width l is input 1 And single hypotenuse horizontal width l 2 ；
Step 3- (2): for rectangular wave form, input wave crest width l 3 ；
Step 3- (3): for triangle wave fold pattern, single hypotenuse horizontal width l is input 4 ；
Step 3- (4): for wave patterns, a single wave horizontal width/is input 5 ；
Step 4: bolt coordinates were calculated from different plate types:
Step 4- (1): for the trapezoid wave pattern, the bolt coordinates are:
step 4- (2): for the rectangular wave fold type, the bolt coordinates are:
step 4- (3): for the triangular wave pattern, the bolt coordinates are:
step 4- (4): for wave patterns, the bolt coordinates are:
step 5: the total number of bolts was calculated according to the following:
step 6: output parameters: bolt coordinate (x) i,j ,y i,j ) Total number of bolts n b 。
As shown in fig. 8-1 to 8-3, the stress performance of the corrugated steel sheet is significantly better than that of the flat steel sheet.
As shown in fig. 8-1, by comparing the elastic buckling properties of the corrugated steel plate and the flat steel plate under pure shear load, it can be found that the shear elastic buckling stress of the former is much higher than that of the latter, especially when the thickness of the plate is smaller; for example, for a typical wave form size, when the thickness of the plate is 2mm, the shearing elastic buckling stress of the former is about 75 times that of the latter.
As shown in fig. 8-2, by comparing the elastic buckling properties of the corrugated steel plate and the flat steel plate under the in-plane pure compressive load, it can be found that the compressive elastic buckling stress of the former is much higher than that of the latter, especially when the thickness of the plate is small; for example, for a typical wave form size, when the thickness of the plate is 2mm, the compressive elastic buckling stress of the former is about 110 times that of the latter.
As shown in fig. 8-3, by comparing the force-bearing properties of the corrugated and flat steel plates under the action of the out-of-plane transverse compressive load, it can be seen that the out-of-plane bending cylindrical stiffness of the former is much higher than that of the latter, especially when the thickness of the plate is small; the concrete pouring device has the advantages that the concrete pouring device has larger out-of-plane rigidity when bearing transverse pressure loads such as concrete pouring force and the like, and can obtain more excellent stress performance; for example, for a typical wave-form size, when the thickness of the plate is 2mm, the out-of-plane bending cylinder stiffness is about 360 times that of the plate.
As shown in fig. 9-1 to 9-2, the elastoplastic stress performance of the corrugated steel plate-concrete composite structure is superior to that of the flat steel plate-concrete composite structure.
As shown in fig. 9-1, by comparing the elastoplastic whole-process load displacement curve of the corrugated steel plate-concrete combined structure and the flat steel plate-concrete combined structure under the combined action of the concrete pouring pressure and the in-plane vertical pressure, the bearing capacity efficiency of the corrugated steel plate-concrete combined structure is far higher than that of the flat steel plate-concrete combined structure; under the condition of the same plate thickness and bolt density, the bearing stability coefficient of the corrugated steel plate-concrete combined structure reaches about 0.7, while the bearing stability coefficient of the flat steel plate-concrete combined structure is only 0.05, which is ten times different.
As shown in fig. 9-2, by comparing the elastoplastic overall process analysis von Mises stress distribution and out-of-plane deformation distribution of the corrugated steel plate-concrete combined structure and the flat steel plate-concrete combined structure under the combined action of concrete pouring pressure and in-plane vertical pressure, it can be found that the bearing performance of the corrugated steel plate-concrete combined structure is significantly better than that of the flat steel plate-concrete combined structure: on one hand, von Mises stress on the whole plate is distributed uniformly, the material is fully utilized, and stress concentration occurs at the bottom of the structure, so that the structure loses bearing capacity prematurely; on the other hand, the out-of-plane deformation of the front is far smaller than that of the rear, which indicates that the front has larger out-of-plane rigidity when bearing transverse pressure loads such as concrete pouring force and the like, and can obtain more excellent stress performance.
Other constructions and operations of the corrugated steel plate-concrete composite structure according to the embodiment of the present invention are known to those skilled in the art, and will not be described in detail herein.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the invention.
Claims (9)
1. The computer control forming method of the corrugated steel plate-concrete combined structure is characterized by comprising a blanking system, a molding system, a stamping system, an assembling system and a welding system, wherein the forming process is as follows:
Structure 6.1 blanking system
The blanking system comprises a blanking calculation module and a blanking machine; the molding process associated with the blanking system is as follows:
step 6.1.1, inputting geometrical parameters of the plate, including: height of the platehSpacing between two platesbVertical bolt distancedNumber of wave troughnWidth of troughl 0 Amplitude of wavea；
Step 6.1.2, selecting a plate type and inputting a plate type parameter corresponding to the plate type;
step 6.1.3, calculating by a blanking calculation module to obtain the size of the blanking plate: width of (L)wLength ofs；
Step 6.1.4, finishing the plate blanking of the waveform steel plate 1 and the waveform steel plate 2 through a blanking machine;
structure 6.2 Molding System
The molding system comprises a mold calculation module and a mold forming machine; the molding process associated with the molding system is as follows:
step 6.2.1, calculating to obtain a die shape function according to the plate geometric parameters through a die calculation modulem(x)；
Step 6.2.2, through a die forming machine,according to the mould shape functionm(x) A forming die;
structure 6.3 stamping System
The punching system comprises a screw hole positioning module, a punching lathe and a pulley transfer machine; the forming process associated with the stamping system is as follows:
step 6.3.1, calculating the number of mounting holes and the coordinates of the mounting holes according to the geometric parameters of the plate through the screw hole positioning module;
Step 6.3.2, stamping and forming the corrugated steel plate 1 and the corrugated steel plate 2 by using a die according to the coordinates of the mounting hole by using a stamping lathe;
step 6.3.3, transferring the formed corrugated steel plate 1 and the formed corrugated steel plate 2 to an assembling system through a pulley transfer machine;
structure 6.4 Assembly System
The assembling system comprises a magnetic mechanical arm, a laser alignment system and a bolt mounting system; the molding process associated with the splicing system is as follows:
step 6.4.1, adsorbing the corrugated steel plate 2 and overturning by a magnetic manipulator;
step 6.4.2 alignment of the corrugated steel sheet 1 and the corrugated steel sheet 2 by the laser alignment system and ensuring the parallel pitch to beb；
Step 6.4.3, realizing the transportation, the installation and the pre-tightening force application of the bolts according to the number and the coordinates of the bolts through a bolt installation system;
step 6.4.4, transferring the concrete filled steel tube side column and assembling the concrete filled steel tube side column in alignment with the corrugated steel plate system;
structure 6.5 welding System
The welding system comprises a scanning manipulator and an automatic welding gun; the molding process associated with the welding system is as follows:
step 6.5.1, scanning a welding path between the corrugated steel plate and the side column through a scanning manipulator;
6.5.2, welding is realized through an automatic welding gun;
step 6.5.3, adsorbing and overturning the steel plate and the side column system by using a magnetic manipulator;
And 6.5.4, scanning a welding path again through a scanning manipulator, and realizing the welding of the other side through an automatic welding gun, thereby finally completing the molding of the corrugated steel plate system with the side column.
2. The computer-controlled molding method according to claim 1, wherein the calculation of the blanking size is performed by the blanking calculation module as follows:
step 7.1, inputting geometrical parameters of the plate, including: height of the platehNumber of wave troughnWidth of troughl 0 Amplitude of wavea；
Step 7.2, selecting a plate type, namely: trapezoid wave folding; rectangular wave folding; triangular wave folding; wave-shaped;
step 7.3, inputting plate type parameters according to different plate types:
step 7.3.1, for the trapezoidal wave form, inputting the wave crest widthl 1 And single hypotenuse horizontal widthl 2 ；
Step 7.3.2, for rectangular wave form, input wave crest widthl 3 ；
Step 7.3.3, for triangle wave fold pattern, input single hypotenuse horizontal widthl 4 ；
Step 7.3.4, for wave pattern, input a single wave horizontal widthl 5 ；
Step 7.4, obtaining a plate length correction coefficient considering the plastic influence according to different plate types, wherein the calculation of the coefficient adopts an output result of a die calculation module;correcting the coefficient for the length of the plate;
Step 7.5, calculating the blanking length according to different plate types:
step 7.5.1, for the trapezoid wave pattern, the blanking length is calculated according to the following formula:
step 7.5.2, for the rectangular wave pattern, the blanking length is calculated as follows:
step 7.5.3, for triangle wave fold type, the blanking length is calculated as follows:
step 7.5.4, for the wave pattern, the feed length is calculated as follows:
step 7.6, outputting the size of the blanking: blanking widthwBlanking lengths。
3. The computer-controlled forming method according to claim 1, wherein the calculation of the die shape function and the plate length correction coefficient is performed by the die calculation module, and the calculation process is as follows:
step 8.1, inputting parameters, including: height of the platehAmplitude of waveaNumber of wave troughnWidth of troughl 0 ；
Step 8.2, selecting a plate type, and inputting plate type parameters according to different plate types; setting a shaping function error norm limit tol;
step 8.3, generating an objective shape function according to the objective plate shape sizef(x)；
Step 8.4, setting an iteration variablei=0; initializing a mold shape function:
step 8.5, obtaining the steel plate in the die through a finite element calculation module secondarily developed by ABAQUSm i (x) Elastic spring-back function under action The method comprises the steps of carrying out a first treatment on the surface of the Step 8.6, obtaining the plate length correction coefficient +.>；
Step 8.7, calculating an error shape function according to the following formula:
step 8.8, calculating the error norm of the shape function according to the following formula:
step 8.9, judging whether the error norm of the shape function is lower than the error limit value according to the following formula:
step 8.10, if the formula in step 8.9 is not established, indicating that the error exceeds the limit value, and returning to step 8.5 for iteration after calculation according to the following formula;
step 8.11: if the equation in the step 8.9 is satisfied, indicating that the error meets the limit requirement, outputting a die shape function and a plate length correction coefficient according to the following steps:
。
4. the computer-controlled forming method according to claim 1, wherein the calculation of the total number of bolts and the coordinates of the bolts is performed by using the screw hole positioning module, and the calculation process is as follows:
step 9.1, inputting geometrical parameters of the plate, including: height of the platehVertical bolt distancedNumber of wave troughnWidth of troughl 0 ；
Step 9.2, selecting a plate type, namely: trapezoid wave folding; rectangular wave folding; triangular wave folding; wave-shaped;
step 9.3, inputting plate type parameters according to different plate types:
step 9.3.1, for the trapezoidal waveform, the peak width is inputl 1 And single hypotenuse horizontal width l 2 ；
Step 9.3.2, for rectangular wave form, input wave crest widthl 3 ；
Step 9.3.3, for triangle wave fold pattern, input single hypotenuse horizontal widthl 4 ；
Step 9.3.4, for wave pattern, input a single wave horizontal widthl 5 ；
Step 9.4, calculating bolt coordinates according to different plate types:
step 9.4.1, for the trapezoidal wave fold type, the bolt coordinates are:
step 9.4.2, for the rectangular wave fold type, the bolt coordinates are:
step 9.4.3, for the triangle wave fold type, the bolt coordinates are:
step 9.4.4, for wave patterns, the bolt coordinates are:
step 9.5, calculating the total number of bolts according to the following formula:
step 9.6, outputting parameters: bolt coordinates [ ]x i,j ,y i,j ) Total number of boltsn b 。
5. The waveform steel plate-concrete combined structure is manufactured by the computer control forming method according to any one of claims 1-4, and is characterized in that the waveform steel plate-concrete combined structure consists of two symmetrically placed waveform steel plates, internally filled concrete, side columns and high-strength bolts for connecting the two waveform steel plates, and the structural arrangement mode comprises a straight shape, an L shape, a T shape, a Z shape or a cross shape; the side column comprises a square steel tube type, an H-shaped steel type or a channel-shaped steel type; the corrugated steel plate comprises a trapezoid wave form, a rectangular wave form, a triangular wave form or a wave form; the two corrugated steel plates are connected by arranging mounting holes at the trough positions of the two corrugated steel plates for screws to pass through, and the mounting holes are uniformly distributed along the height direction; the connecting type of the corrugated steel plate comprises a gourd-shaped hole connecting type, a key-shaped hole connecting type, an expansion self-locking connecting type or a high-strength bolt connecting type.
6. The corrugated steel plate-concrete composite structure according to claim 5, wherein the gourd-shaped holes are connected in the form of a gourd-shaped mounting hole formed in the corrugated steel plate, wherein the large holes of the gourd-shaped holes are positioned below the small holes, and the mounting process is as follows:
step 2.1, inserting a cylindrical screw rod and a circular limit sleeve into a gourd-shaped mounting hole through a large hole;
step 2.2, the cylindrical screw rod is dropped to the small hole end of the calabash-shaped hole, and the limitation of the waveform steel plate is realized through the circular limiting sleeve;
and 2.3, adding washers and nuts at two ends of the cylindrical screw rod, and tightening the nuts to apply pretightening force.
7. The corrugated steel plate-concrete composite structure of claim 5, wherein the key type holes are formed in the corrugated steel plate in a connecting manner, wherein the large holes of the medium holes are arranged at the bottom and the small holes are arranged at the top, and the installation process is as follows:
step 3.1, inserting the screw rod with the limit clamp into the key type mounting hole, wherein the upper limit clamp of the screw rod is positioned at the upper end;
step 3.2, rotating the screw rod with the limit clamp around the axis by 180 degrees, wherein the upper limit clamp of the screw rod is positioned at the lower end, and limiting the waveform steel plate through the limit clamp;
And 3.3, adding washers and nuts at two ends of the screw rod with the limit clamp, and tightening the nuts to apply pretightening force.
8. The corrugated steel plate-concrete composite structure according to claim 5, wherein the expansion self-locking connection mode is that a circular mounting hole is arranged on the corrugated steel plate, connection is realized by adopting a metal expansion sleeve with threads in the middle and variable-section screws connected to two ends of the metal expansion sleeve, two ends of the metal expansion sleeve are provided with gaps along the axial direction, and the mounting process is as follows:
step 4.1, inserting a metal expansion sleeve and variable-section screws connected to two ends of the metal expansion sleeve into the circular mounting holes;
and 4.2, adding washers and nuts on the variable-section screw rods at the two ends, tightening the nuts to apply pretightening force, and extruding the side wall of the metal expansion sleeve by the screw rods from the inside along with the screwing of the screw rods, so that the sections of the two end parts of the metal expansion sleeve are enlarged, and limiting the corrugated steel plate is realized.
9. The corrugated steel plate-concrete composite structure as set forth in claim 5, wherein the high strength bolts are connected in the form of circular mounting holes formed in the corrugated steel plate, and the mounting process is as follows by using an internally threaded sleeve and high strength bolts attached to both ends thereof:
step 5.1, tightly attaching the internally threaded sleeve to the corrugated steel plate on one side, and screwing the internally threaded sleeve into the high-strength bolt on one side;
And 5.2, covering the other corrugated steel plate, and screwing the high-strength bolt on the other side.
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| CN107524162A (en) * | 2017-09-21 | 2017-12-29 | 清华大学 | A kind of assembled corrugated sheet steel Combined concrete pipe gallery |
| CN109190230B (en) * | 2018-08-24 | 2023-04-25 | 衢州职业技术学院 | Building decorative plate length scale generation method |
| CN112726879B (en) * | 2020-12-28 | 2022-03-08 | 同济大学 | Corrugated steel plate composite wall structure system |
| CN113360969B (en) * | 2021-05-10 | 2024-01-30 | 中国铁路设计集团有限公司 | High-strength bolt rapid design method for steel truss girder rod piece |
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