CN107338762B - Omega-type full-locking positioning method and positioner for accurately shaping steel bars of flood prevention wall - Google Patents
Omega-type full-locking positioning method and positioner for accurately shaping steel bars of flood prevention wall Download PDFInfo
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- CN107338762B CN107338762B CN201710735188.8A CN201710735188A CN107338762B CN 107338762 B CN107338762 B CN 107338762B CN 201710735188 A CN201710735188 A CN 201710735188A CN 107338762 B CN107338762 B CN 107338762B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/10—Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
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Abstract
An omega-type full-locking positioning method for accurately shaping steel bars of a flood prevention wall comprises the steps of firstly, positioning the steel bar spacing, installing and manufacturing a frame by fixing galvanized steel pipes (6) through omega-shaped locks (5), and positioning the thickness of a protective layer by using prefabricated disc slotted weight type cushion blocks (4) for supporting and fixing a steel bar protective layer; perforated screws are attached to the prefabricated disc slotted weight type cushion block (4) for fixing, the galvanized steel pipe (6) and the omega-shaped lock catch (5) are taken out before concrete pouring, and the prefabricated disc slotted weight type cushion block (4) is reserved in a concrete pouring body; the frame is firstly fixed and then bound or welded, and the integral stability of the shaped steel bar is improved. The contact area between the cushion block and the template is small, the processing and the installation are convenient, the structural rigidity is large, the deformation is not easy to occur, the positioning is accurate, and the effect is obvious; when dismantling in the later stage, only need untie the mounting can realize dismantling fast of locator, locator and relevant auxiliary fixtures device can used repeatedly, and the whole aesthetic property of reinforcing bar after the design is better.
Description
Technical Field
The invention relates to a water conservancy flood prevention wall bottom plate and wall body structure technology, belongs to the technology of sheet pile walls, piles or other structural members special for E02D5/00 foundation engineering in IPC classification, and particularly relates to an omega-type full-locking positioning method and a positioner for accurately sizing steel bars of a flood prevention wall.
Background
The construction quantity and scale of water conservancy projects are getting larger, the traditional water conservancy construction method is mainly completed based on manual operation in the construction process, especially for the shaping or positioning of the steel bar structure of the flood prevention wall, and steel bars need to be embedded when construction processes such as welding, pipeline construction, lightning protection construction and the like are needed in a construction site, but the positioning of the embedded steel bars is inconvenient, and the fixation of the embedded steel bars is realized by a common method of binding redundant positioning steel bars on the surfaces of the exposed steel bars.
The steel bar positioning instrument in the prior art is specially designed for the building industry, is an accurate, reliable and convenient-to-use steel bar positioning instrument, and is durable. Clear prompt tones and analytical instrumentation can help achieve rapid and accurate detection without the need for continuous zeroing during use. Including high resolution controllable area probes-since the location where the probe signal is strongest is the central area, the position of the rebar can be accurately located even when measured very close to the center of the rebar or close to a metal object, such as a scaffold or metal window frame. At the same time, the instrument panel displays-high quality instruments, signal strength and battery status. The steel bars can be identified to be in the horizontal direction or the vertical direction. After the position of the steel bar in the concrete is determined, the detection coil probe of the positioner is rotated until the maximum and minimum signals occur. The maximum signal indicates that the steel bar is parallel to the handle direction of the detection coil, and the minimum signal indicates that the steel bar forms an angle of 90 degrees with the handle direction of the detection coil. Although the precision of the instrument is high, the instrument is mainly used for the later detection of buildings and is not suitable for application in the construction period.
The Chinese patent application 201610159518.9 provides a steel bar positioner, which comprises a steel pipe, wherein a plurality of radial grooves are arranged at the same axial height of the steel pipe at intervals, the cross sections of the radial grooves are oval, and the steel pipe is cut into two halves along the long axis of the oval cross section to form a first positioner and a second positioner respectively; the first positioner and the second positioner are respectively clamped on the periphery of the steel bar from two sides to fix the steel bar in the radial groove, and the two ends of the first positioner and the second positioner are respectively fixed together through fixing parts.
Chinese patent application 201410161000.X relates to a casing milling ground wall steel reinforcement cage locator, including casing milling scale shell, casing milling scale inner bag, transfer perpendicular steel sheet, temporary connecting piece, permanent connecting piece, steel reinforcement cage, deviational survey and ultrasonic equipment, head muscle, its characteristics are: the two ends of the end enclosure rib are connected with the steel reinforcement cage, the two sides of the end enclosure rib are respectively connected with the vertical adjustment steel sheets through the temporary connecting pieces, one end of each temporary connecting piece is connected with the milling sizing inner container, and the vertical adjustment steel sheets located on the inner side are provided with inclination measuring and ultrasonic equipment which can be placed along with the ground wall steel reinforcement cage and can be used for positioning the ground wall steel reinforcement cage in real time.
Chinese patent application 201420373890.6 relates to a device capable of positioning the position and the distance of main reinforcements of a reinforcement cage in the process of manufacturing the reinforcement cage. Mainly be for solving the annular positioner who uses at present and often cause each main muscle of steel reinforcement cage uneven, the inhomogeneous problem design of interval. The bottom of each vertical plate is fixed at two ends of the bottom plate, a positioning base plate provided with an arc-shaped groove is arranged between the two vertical plates, two ends of the positioning base plate are connected with the vertical plates, the bottom of the positioning base plate is fixed on the bottom plate, and a plurality of positioning clamping grooves are formed in the groove wall of the arc-shaped groove of the positioning base plate; the upper ends of the two arc-shaped movable positioning pieces are connected together through a smooth surface bolt, the lower ends of the two arc-shaped movable positioning pieces are respectively connected to the tops of two ends of the positioning base plate through smooth surface bolts, and a plurality of positioning clamping grooves are uniformly formed in the outer arc edges of the two movable positioning pieces.
Chinese patent application 201520322776.5 relates to a movable steel bar positioner, which consists of a main ruler, a vernier I and a vernier II; the clear distance of the main reinforcement of the reinforcement cage is determined through calculation, the vernier I or the vernier II is adjusted up and down, two cursors are fixed when the distance between the vernier I and the vernier II is equal to the clear distance of the main reinforcement of the reinforcement cage, any one of the main reinforcements of the reinforcement cage is spot-welded on the stiffening stirrup, the vernier I is clamped on the main reinforcement of the reinforcement cage, then any other one of the main reinforcements is placed on the vernier II and is subjected to spot welding construction, the last step of working procedure is carried out in sequence, and the positioning construction of the main reinforcement of the reinforcement cage can be completed and the reinforcement cage framework is formed.
The Chinese patent application 201520359735.3 is a column vertical steel bar positioner, which comprises a column frame sleeved outside a column vertical steel bar, wherein the column frame comprises four end-to-end long screws with circular rings, and the free end of each long screw with circular ring is arranged in the adjacent circular ring with the long screw with circular ring in a penetrating manner and connected through a first nut; each long screw with the circular ring is provided with a plurality of pairs of square nuts, and each steel bar of the column vertical steel bar is fixed between each pair of square nuts; the short screw rod with the circular ring is sleeved on each steel bar of the vertical steel bar of the column, the second nut is in threaded connection with each short screw rod with the circular ring, each second nut is clamped on the corresponding outer side of each pair of square nuts, and the vertical steel bar is fixed with the column frame through the short screw rod with the circular ring, the second nuts and the paired square nuts. The guarantee is when concrete placement, and the vertical reinforcing bar of post is according to the position location of designing requirement all the time, does not take place the displacement.
In addition, the protective layer cushion block is also a prefabricated product with the function of a positioner for the construction of the concrete reinforced frame. The cushion block of the reinforcing steel bar protective layer is arranged under the beam in a brick-concrete structure to enlarge the bearing area, which is a common method for solving the problem of local bearing. The thickness of the concrete protective layer of the steel bar is related to the bearing capacity, durability, fire resistance and other performances of the structure. The existing protective layer cushion block has a cone shape, a plum blossom shape, a circular ring shape and a circular opening, wherein binding steel wires or a fixed buckle device are pre-buried on part of the protective layer cushion block. The protective layer cushion block is mainly composed of a prefabricated mortar cushion block, a plastic cushion block, a wood cushion block and the like at present, and the shape of the protective layer cushion block is square, round cake-shaped and the like. Control of the thickness of the protective layer is becoming more and more important in current quality acceptance work, and new specifications dictate that physical inspection be performed during the acceptance process.
The prior art has the outstanding defects that the positioned steel bars are easy to be disturbed by the binding of the next group of steel bars, so that deviation and distortion are generated; or move during the binding welding process, resulting in difficult control of the spacing. However, the method has large workload when the positioning bar is dismantled in the later period, and concrete blocks and slurry are easy to be adhered to the surface of the positioning bar, so that the cleaning is troublesome. The construction quality is mostly rough, the construction precision is influenced, the engineering quality cannot meet higher and higher construction standards, and the allowable deviation of the spacing between the main bars of the reinforcement cage is +/-10 mm according to the relevant regulations of 'construction quality acceptance criteria for foundation engineering of building foundation' GB 50202-2002. This necessitates a new pitch check and, if necessary, a rework process.
Disclosure of Invention
The invention aims to provide an omega-type full-locking positioning method and a positioner for accurately shaping steel bars of a flood prevention wall, and provides an accurate flood prevention wall steel bar positioning method, which can realize quick positioning of the steel bars and can realize quick dismantling in the later period.
The aim of the invention is achieved by the following technical measures: firstly, positioning the distance between reinforcing steel bars, fixing a galvanized steel pipe by using omega-shaped buckles, installing and manufacturing a frame, and using a prefabricated disc slotted weight-type cushion block for supporting and fixing a reinforcing steel bar protective layer to perform protective layer thickness positioning; the prefabricated disc slotted weight type cushion block is additionally provided with a perforated screw for fixing, the galvanized steel pipe and the omega lock catch are taken out before concrete pouring, and the prefabricated disc slotted weight type cushion block is reserved in a concrete pouring body. The construction comprises the following steps: (1) Preparing an omega lock catch and a disc slotted weight type cushion block according to the design size; (2) determining the placement positions of the main ribs of the flood prevention wall; (3) clamping the main ribs at the inner side and the outer side by using omega-shaped lock catches; (4) After the main ribs at the two ends of the inner side and the outer side and the omega-shaped lock buckle connected with the galvanized steel pipe are clamped, a fixed frame is formed, and then the main ribs in the frame are sequentially clamped on the omega-shaped lock buckle; (5) After the main ribs are placed, measuring the control lines of the distribution ribs 1 by using a tape measure, and drawing by using chalk; (6) binding the distribution ribs to the main ribs in sequence; (7) Buckling the prefabricated disc slotted weight type cushion block at the set position of the main rib 2; (8) taking the omega lock catch with the galvanized steel pipe out of the main rib; (9) And (5) checking the reinforcing steel bar positioning condition and the stability condition of the whole reinforcing steel bar, and if the requirements are met, carrying out next-step template installation.
Particularly, the omega-shaped lock catch with the galvanized steel pipe is abutted against the outer side of the placed main rib to form a row of clamping grooves, all the main ribs are buckled to form an upper row and a lower row of structures, and then the main ribs are buckled by the prefabricated disc slotted weight type cushion blocks.
Particularly, the steel bar positioning method comprises the accurate positioning of the steel bar space including the main bar design space, the bin width and the distribution bar design space and the accurate positioning of the steel bar protection layer. The design interval of the main ribs is accurately controlled to be set in the installation process of the main ribs, the distribution ribs are set by using a tape measure after the main ribs are set, the design interval of the distribution ribs is measured, and the distribution ribs are marked by using chalk. Then, controlling the width of the sub-bin according to design, and taking out the omega lock catch with the galvanized steel pipe before the templates are installed after the steel bars are bound and fixed stably; the prefabricated disc slotted weight type cushion block is not taken out.
Particularly, after the distributed ribs and the steel bars including the main ribs are positioned, binding or welding is carried out, then the galvanized steel pipes and the omega-shaped lock catches are integrally disassembled, and then the prefabricated disc slotted weight type cushion blocks are installed.
In particular, the prefabricated round cake weight type cushion block is a concrete mortar prefabricated block taking elastic iron as a model. The prefabricated round cake weight type cushion block is provided with a local groove-shaped opening, holes are formed in two sides of the groove-shaped opening and penetrate through a threaded nail fastener, and a spring is sleeved on the threaded nail fastener.
Particularly, the omega-shaped lock catch is an omega-shaped elastic iron positioning lock catch. Two sides of the top opening of the omega-shaped lock catch are respectively provided with an outward-turning support plate, moreover, the bottom end of the tail part of the omega-shaped lock catch is tangentially welded with a fixed plate, and a steel wire is fixed on the fixed plate. When the galvanized steel pipe is connected with the omega-shaped lock catch, the tail part of the omega-shaped lock catch is supported on the outer wall of the galvanized steel pipe along the direction of the main shaft by the fixing plate, and meanwhile, steel wires are bound or welded on two sides of the outer wall of the galvanized steel pipe.
The invention has the advantages and effects that: the frame is firstly fixed and then bound or welded, and the overall stability of the shaped steel bar is improved. The main ribs are accurately positioned and uniformly spaced. The contact area between the cushion block and the template is small, and the exposed cushion block can not be seen basically. The phenomenon that the steel bar is stressed unevenly and the concrete leaks bars due to insufficient steel bar spacing and protective layer thickness is prevented. For flood control walls with longer mileage, the positioning quality and speed of the steel bars are obviously improved. The positioning structure is simple, the cost is low, and the maintenance cost is low in the using process; the processing and the installation are convenient, the structural rigidity is large, the deformation is not easy to occur, the positioning is accurate, and the positioning effect is obvious; when dismantling in the later stage, only need untie the mounting can realize dismantling fast of locator, can effectively provide workman's work efficiency. And the engineering quality is ensured. The steel bar shaping machine has the advantages that the steel bar shaping machine can achieve zero rework rate, is energy-saving and environment-friendly, the positioner and related auxiliary tool devices can be reused, and the overall attractiveness of the shaped steel bar is good.
Drawings
FIG. 1 is a perspective view of an installation structure of embodiment 1 of the present invention
FIG. 2 is a schematic sectional view of an installation structure of embodiment 1 of the present invention
FIG. 3 is a schematic partial front view of an installation structure according to embodiment 1 of the present invention
FIG. 4 is a schematic view of a prefabricated disk slotted weight type cushion block mounting structure in embodiment 1 of the present invention
Fig. 5 is a schematic view of the omega lock catch structure in embodiment 1 of the invention
The reference numerals include:
the steel wire fixing device comprises distributed ribs 1, main ribs 2, threaded nail fasteners 3, prefabricated disc slotted weight type cushion blocks 4, omega-shaped lock catches 5, galvanized steel pipes 6, springs 7, fixing plates 501 and steel wires 502; main muscle design interval L1, branch storehouse width L2, distribution muscle design interval L3.
Detailed Description
The concrete has a protective layer which is too thin and is easy to be permeated by moist gas and water, and cracks are easy to generate when the protective layer is too thick, so that the reinforcing steel bars can be corroded and expanded, and the concrete is damaged, and the use and the structural safety are influenced. The protective layer has anchoring force on the reinforcing steel bars, and the concrete and the reinforcing steel bars are tightly combined to participate in work together by utilizing the anchoring force between the concrete and the reinforcing steel bars. When the protective layer is too thin or is absent, the anchoring force of the protective layer is reduced, so that the effect of the structure on resisting axial force and bending moment is reduced.
Formula for calculating flexural bearing capacity from normal section
M.ltoreq.al fcbx (h 0-x/2) + fy ' AS ' (ho- -a s ') mono (σ pO ' fpy ') A p ' (ho- -a p ')
It can be seen that when the effective height h0 of the cross section is reduced due to the fact that the surface rib protection layer is too thick, the bending bearing capacity of the cross section is reduced. It can be seen that the thickness of the protective layer is a factor that affects how important the structural load bearing capacity is. On the other hand, the concrete has a certain heat insulation effect, and can protect the steel bars which are easy to soften when a fire disaster occurs, and if the thickness of the protective layer is too thin, the steel bars are easy to crack under a high-temperature environment, so that the strength of the steel bars is reduced due to overheating, and the whole structure is damaged.
According to the flood prevention wall reinforcing steel bar accurate shaping omega-type full lock catch positioning method, the reinforcing steel bar spacing positioning is firstly carried out to ensure that each reinforcing steel bar can be accurately positioned, then the protective layer thickness positioning is carried out, and the positioning is carried out according to the ensuring requirement.
The principle of the invention is that the steel bar spacing positioning is firstly carried out, the frame is installed and manufactured by fixing the galvanized steel pipe 6 by the omega-shaped lock catch 5, and the prefabricated disc slotted weight type cushion block 4 is used for supporting and fixing the steel bar protective layer to carry out the protective layer thickness positioning; the prefabricated disc slotted weight type cushion block 4 is additionally provided with a perforated bolt for fixing, the galvanized steel pipe 6 and the omega-shaped lock catch 5 are taken out before concrete pouring, and the prefabricated disc slotted weight type cushion block 4 is reserved in a concrete pouring body.
The invention changes the design concept on the basis of the traditional steel bar spacing control and the steel bar protective layer thickness control, replaces the U-shaped lock catch with the omega lock catch 5, replaces the traditional cushion block with the prefabricated disc slotted weight type cushion block 4, can well replace the traditional steel bar positioning method, not only meets the requirements of the transverse and longitudinal spacing of the steel bar, but also meets the requirements of the thickness of the steel bar protective layer, improves the construction quality and the standard, and can accurately shape the steel bar in place at one time, thereby effectively avoiding the influence of reworking, saving the construction time and cost and reducing the labor input.
The invention is further illustrated by the following figures and examples.
Example 1: as shown in fig. 1, the construction comprises the following steps: (1) Preparing an omega-shaped buckle 5 and a disc slotted weight type cushion block 4 according to the design size; (2) determining the placement positions of the main ribs 2 of the flood prevention wall; (3) clamping the main ribs 2 at the inner side and the outer side by using omega-shaped lock catches 5; (4) The main ribs 2 at the two ends of the inner side and the outer side are clamped with the omega-shaped lock catches 5 connected with the galvanized steel pipes 6 to form a fixed frame, and then the main ribs 2 in the frame are sequentially clamped on the omega-shaped lock catches 5; (5) After the main ribs 2 are placed, measuring control lines of the distribution ribs 1 by using a tape measure, and drawing by using chalk; (6) binding the distribution ribs 1 to the main ribs 2 in sequence; (7) Buckling a prefabricated disc slotted weight type cushion block 4 at a set position of the main rib 2; (8) taking the omega-shaped lock catch 5 with the galvanized steel pipe 6 out of the main rib 2; (9) And (5) checking the reinforcing steel bar positioning condition and the stability condition of the whole reinforcing steel bar, and if the requirements are met, carrying out next-step template installation.
In the foregoing, as shown in fig. 2, the omega-shaped lock catch 5 with the galvanized steel pipe 6 is leant against the outer side of the placed main rib 2 to form a row of locking grooves, all the main ribs 2 are buckled to form an upper row and a lower row of structures, and then the main rib 2 is buckled by the prefabricated disk slotted weight-type cushion block 4.
In the foregoing, as shown in fig. 3, the steel bar positioning method includes the accurate positioning of the steel bar space and the accurate positioning of the steel bar protection layer, where the main bar design space L1, the bin width L2, and the distribution bar design space L3 are included. The design interval L1 of the main ribs is accurately controlled to be fixed in the installation process of the main ribs 2, the distribution ribs 1 are fixed by a tape measure after the main ribs 2 are fixed, the design interval L3 of the distribution ribs is measured, and the main ribs are marked by chalk. Then, controlling the width L2 of the sub-bin according to design, and taking out the omega lock catch 5 with the galvanized steel pipe 6 before the templates are installed after the steel bars are bound and fixed stably; the prefabricated disk slotted weight type cushion block 4 is not taken out.
In the foregoing, after the steel bars including the distribution rib 1 and the main rib 2 are positioned, binding or welding is carried out, then the galvanized steel pipe 6 and the omega lock catch 5 are integrally disassembled, and then the prefabricated disc slotted weight type cushion block 4 is installed.
In the foregoing, the galvanized steel pipe 6 is manufactured according to the set bin width L2, the size and strength of the Ω -shaped shackle 5 are manufactured according to the construction requirements, and the thickness, length and strength of the prefabricated disk slotted weight type cushion block 4 are manufactured according to the design and construction requirements.
In the foregoing, as shown in fig. 4, the prefabricated round cake weight type cushion block 4 is a concrete mortar prefabricated block using elastic iron as a model. The prefabricated round cake weight type cushion block 4 is provided with a local groove-shaped opening, holes are formed in two sides of the groove-shaped opening and penetrate through the threaded nail fastener 3, and the threaded nail fastener 3 is sleeved with a spring 7.
In the foregoing, as shown in fig. 5, the Ω -shaped lock 5 is an Ω -shaped elastic iron positioning lock. Two sides of the top opening of the omega-shaped lock catch 5 are respectively provided with an outward-turning support plate, moreover, the bottom end of the tail part of the omega-shaped lock catch 5 is tangentially welded with a fixing plate 501, and a steel wire 502 is fixed on the fixing plate 501. When the galvanized steel pipe 6 is connected with the omega-shaped lock catch 5, the tail part of the omega-shaped lock catch 5 is supported on the outer wall of the galvanized steel pipe 6 along the main shaft direction by the fixing plate 501, and the steel wires 502 are bound or welded on two sides of the outer wall of the galvanized steel pipe 6.
In the embodiment of the invention, the main ribs 2 are positioned by the omega-shaped buckles 5, after the main ribs 2 are positioned, the positions of the distribution ribs 1 are accurately found, the prefabricated disc slotted weight type cushion blocks 4 are buckled on the main ribs 2, the template is supported, and the thickness of the reinforcing steel bar protection layer is accurately controlled. The steel bar spacing meeting the design and specification requirements is formed, the traditional extensive positioning method is replaced, and the method can be popularized to various building projects with high steel bar positioning requirements.
In the embodiment of the invention, the distance between the omega-shaped lock catches 5 is the span processed according to the design drawing, and the diameter of the omega-shaped lock catch 5 is manufactured according to the diameter requirement of the main reinforcement 2. The inner and outer side sizes of the prefabricated disc slotted weight type cushion block 4 are prefabricated according to the diameter of the main rib 2. The threaded nail fastener 3, the prefabricated disc slotted weight-type cushion block 4 and the omega-shaped latches 5 need to meet the requirements of size, stress, safety, stability, firmness and beautiful appearance.
The invention has good use value and popularization value. Compared with the traditional steel bar positioning method, the method has the advantages that the economical efficiency, the construction speed and the quality control are compared:
(1) The economy is compared;
according to the calculation of the same engineering quantity, for example, a 15m flood wall with 1 cabin adopts a common positioning mode to bind or weld and position a cabin of reinforcing steel bars, the cost of consumed raw materials is 20 yuan, and the labor cost is 150 yuan, while the method for binding or welding and positioning a cabin of reinforcing steel bars, the cost of consumed raw materials is 20 yuan, the labor cost is 120 yuan, and the saved cost is the labor cost in positioning.
(2) Comparing the construction speed with the quality control;
calculated according to the same engineering quantity, the positioning construction speed of the omega-shaped lock catch type steel bar positioner is faster than that of a common positioning mode by more than 3 times, the qualified rate of the steel bar spacing after binding is 100 percent, and is improved by more than 20 percent compared with that of common positioning, and the excellent rate of procedure evaluation is ensured.
In the invention, as a further optimization of the protective layer cushion block, the prefabricated disc slotted weight type cushion block 4 as the protective layer cushion block can adopt a square block shape, a round cake shape or a weight shape. The optimized cushion block has the advantages that the contact surface is small, and the cushion block is convenient to select and use according to the size of the space shape of the installation position.
While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (3)
1. The method is characterized in that the steel bar spacing positioning is firstly carried out, an omega lock catch (5) is adopted to fix a galvanized steel pipe (6) to install and manufacture a frame, a prefabricated disc slotted weight type cushion block (4) is used for supporting and fixing a steel bar protective layer, and the protective layer thickness positioning is carried out;
wherein, the prefabricated disc slotted weight type cushion block (4) is additionally provided with a perforated bolt for fixation, the galvanized steel pipe (6) and the omega lock catch (5) are taken out before concrete pouring, and the prefabricated disc slotted weight type cushion block (4) is reserved in a concrete pouring body;
the prefabricated disc slotted weight type cushion block (4) is a concrete mortar prefabricated block taking elastic iron as a model; the prefabricated disc slotted weight type cushion block (4) is provided with a local slotted opening, holes are formed in two sides of the slotted opening and penetrate through the threaded nail fastener (3), and the threaded nail fastener (3) is sleeved with a spring (7);
the omega-shaped lock catch (5) is an omega-shaped elastic iron positioning lock catch; two sides of the top opening of the omega-shaped lock catch (5) are respectively provided with an outward-turning support plate, moreover, the bottom end of the tail part of the omega-shaped lock catch (5) is tangentially welded with a fixing plate (501), and a steel wire (502) is fixed on the fixing plate (501); when the galvanized steel pipe (6) is connected with the omega lock catch (5), the tail part of the omega lock catch (5) is supported on the outer wall of the galvanized steel pipe (6) along the main shaft direction by the fixing plate (501), and simultaneously, the steel wires (502) are bound or welded on two sides of the outer wall of the galvanized steel pipe (6);
the construction comprises the following steps: 1) Preparing an omega buckle (5) and a disc slotted weight type cushion block (4) according to the design size; 2) Determining the placement position of a main rib (2) of the flood prevention wall; 3) The main ribs (2) at the inner side and the outer side are clamped by omega-shaped lock catches (5); 4) The main ribs (2) at the two ends of the inner side and the outer side are clamped with the omega-shaped lock catches (5) connected with the galvanized steel pipes (6) to form a fixed frame, and then the main ribs (2) in the frame are sequentially clamped on the omega-shaped lock catches (5); 5) After the main ribs (2) are placed, measuring control lines of the distribution ribs (1) by using a measuring tape, and drawing by using chalk; 6) Binding the distribution ribs (1) to the main ribs (2) in sequence; 7) Buckling a prefabricated disc slotted weight type cushion block (4) at a set position of a main rib (2); 8) Taking the omega lock catch (5) with the galvanized steel pipe (6) out of the main rib (2); 9) And (5) checking the reinforcing steel bar positioning condition and the stability condition of the whole reinforcing steel bar, and if the requirements are met, carrying out next-step template installation.
2. The flood prevention wall steel bar accurate shaping omega-type full-locking positioning method according to claim 1, characterized in that omega-shaped locks (5) with galvanized steel pipes (6) are leaned against the outer sides of the placed main bars (2) to form a row of clamping grooves to clamp all the main bars (2) to form an upper row and a lower row of structures, and then the main bars (2) are clamped by prefabricated disc slotted weight type cushion blocks (4).
3. The flood prevention wall steel bar accurate shaping omega-type full-locking positioning method according to claim 1, characterized in that after the steel bars including the distribution bars (1) and the main bars (2) are positioned, binding or welding is performed, then the galvanized steel pipe (6) and the omega-type lock catch (5) are integrally removed, and then the prefabricated disc slotted weight-type cushion block (4) is installed.
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| CN201710735188.8A CN107338762B (en) | 2017-08-24 | 2017-08-24 | Omega-type full-locking positioning method and positioner for accurately shaping steel bars of flood prevention wall |
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| CN109109153A (en) * | 2018-08-09 | 2019-01-01 | 江西荣仁电力器材有限公司 | For the fastener structure in concrete wire pole |
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