Safe construction method for concrete continuous beam

Abstract

The invention relates to the technical field of concrete continuous beam construction, and discloses a safe construction method for a concrete continuous beam. Comprising the steps of bridge fabrication machine installation, bridge fabrication machine pre-pressing testing, reinforcement cage installation of a next beam section, concrete pouring, maintenance, tensioning, formwork demolding, bridge fabrication machine track and main beam walking along a bridge in sequence, and the steps are repeated till all the beam sections are poured and formed. When a reinforcement cage is prefabricated, binding pieces can be pressed into the binding piece clamping mechanism, the multiple binding pieces are distributed in a cross shape in a crossed mode, then the binding pieces penetrate through the intersection positions of reinforcing steel bars, and after the binding pieces reach the set positions, the multiple binding pieces are gathered and twisted through the splicing type twisting mechanism; therefore, the operation of binding in the reinforcement cage is achieved, the bound binding piece is located in the reinforcement cage, and the binding speed is effectively increased.

Description

Technical Field

[0001] The invention relates to the technical field of concrete continuous beam construction, and more specifically, to a concrete continuous beam safe construction method. Background Art

[0002] Prestressed continuous beams are mainly constructed by cantilever casting method. The hanging basket is the main equipment in cantilever construction. The traditional hanging basket diamond frame is assembled from rods. This structure has a high center of gravity and a high risk of overturning. There is a risk of deformation of the rods. At the same time, the hanging basket has low walking efficiency, poor synchronization, cumbersome rear anchor adjustment, and complex formwork adjustment operation. In addition, this construction method has limited operating space and occupies more space above and below the bridge deck. The steel bars cannot be hoisted into the mold as a whole and need to be tied on site, which is time-consuming and labor-intensive.

[0003] In response to the above problems, the "continuous beam intelligent bridge-building machine rapid construction method" was developed. This method studies and handles the problems existing in traditional hanging basket construction. The bridge-building machine adopts a main beam structure, which fits the bridge deck and lowers the center of gravity; it adopts a C-type hook buckle to effectively prevent overturning; the walking, rear anchor adjustment, and template adjustment are electrically and hydraulically controlled, which is simple to operate and highly automated; the track hoisting is coordinated with the main beam movement to achieve the overall hoisting of the steel cage.

[0004] However, when prefabricating the steel cage, workers are still required to manually tie it up. The conventional manual binding process is not only labor-intensive and puts a heavy physical burden on workers, but also has low work efficiency. In addition, the buckle parts of the binding parts after binding are outside the steel cage, which is prone to scratches during lifting, resulting in low safety. Summary of the invention

[0005] The purpose of the present invention is to provide a safe construction method for a concrete continuous beam in order to solve the above problems.

[0006] The present invention provides a method for safely constructing a concrete continuous beam, comprising the following steps: Step 100, installing a bridge-building machine on the initial beam section, and performing a pre-compression test on the bridge-building machine after the installation of the bridge-building machine is completed; Step 200, installing the steel cage of the next beam section, after which the concrete of the next beam section is poured, and after the pouring is completed, curing and tensioning are performed; Step 300: After the concrete of the next beam section solidifies for a set time, the formwork is demoulded; Step 400, controlling the bridge-building machine track and the main beam to move along the bridge in sequence; Step 500, repeat steps 200 to 400 until all beam segments are cast.

[0007] As a further optimization solution of the present invention, the step 200 of installing the reinforcement cage of the next beam section includes the following specific steps: Step 201, based on the drawing parameters, prepare the bottom plate, web plate, top plate and reinforcement; Step 202: Use steel bar tying equipment to tie the bottom plate and web steel bars, and pre-embed the corrugated pipe; Step 203: Install vertical prestressed steel bars and use steel bar tying equipment to tie the top plate steel bars.

[0008] A steel bar binding device for safe construction of a concrete continuous beam, used to implement a safe construction method of a concrete continuous beam as described above, comprising: A middle frame, wherein a gripping portion is detachably connected to the middle of the upper end of the middle frame, and a plurality of lashing piece clamping mechanisms are detachably connected to the lower end of the middle frame, wherein the plurality of lashing piece clamping mechanisms are cross-symmetrically distributed, and two symmetrically distributed lashing piece clamping mechanisms are used to clamp a lashing piece; A plurality of linear moving mechanisms, each of which is connected to a binding member clamping mechanism, and a multi-section electric push rod is connected to a moving end of the linear moving mechanism, and the linear moving mechanism is used to drive the multi-section electric push rod to move along the length direction of the binding member clamping mechanism; A spliced ​​torsion mechanism, the spliced ​​torsion mechanism includes a plurality of torsion components and a driving component arranged on one of the torsion components, the plurality of torsion components are respectively connected to a multi-section electric push rod, the multi-section electric push rod is used to drive the torsion component to move radially along the middle frame, when the plurality of torsion components move a set distance toward the axis of the middle frame, the plurality of binding members are gathered into a bundle and a set pressure value is applied to the plurality of binding members, the driving component is used to apply a set torque value to the plurality of binding members.

[0009] As a further optimization scheme of the present invention, a pressing mechanism is fixedly connected at the center position of the lower end of the middle link frame, and the pressing mechanism includes an elastic pressing component and an elastic force detection component arranged inside the elastic pressing component. The elastic pressing component is used to press the intersection area of ​​several binding members, and the elastic force detection component is used to obtain the pressure value applied by the elastic pressing component to the intersection area of ​​several binding members.

[0010] As a further optimization scheme of the present invention, the elastic pressure covering assembly includes a sleeve fixedly connected at the middle position of the lower end of the middle link frame, a pressure covering part slidably connected inside the sleeve, and a spring 1 connected between the pressure covering part and the elastic force detection assembly. The elastic force detection assembly is fixedly connected to the inner wall of the sleeve, and the elastic force detection assembly is used to obtain the elastic force change value of spring 1.

[0011] As a further optimization scheme of the present invention, the elastic force detection component includes a packaging shell fixedly connected to the inner wall of the sleeve, an integrated circuit board and a mobile power supply arranged in the packaging shell, and a pressure sensor fixedly connected to the outer wall of the packaging shell, and the pressure sensor and the mobile power supply are both electrically connected to the integrated circuit board.

[0012] As a further optimization scheme of the present invention, the binding piece clamping mechanism includes a limiting rod, a slot opened at the lower end of the limiting rod, two sliding grooves symmetrically arranged on the inner wall of the slot, an elastic clamping component slidably connected to the inner wall of the slot, a spring connected between the elastic clamping component and the slot, and a fixed pulley movably connected to the inner wall of the slot, the two elastic clamping components are in contact with each other for clamping the binding piece, the fixed pulley is in contact with the binding piece, and a plurality of connecting screw holes are provided on the middle connecting frame, and the plurality of connecting screw holes are respectively arranged to match the limiting rod and the holding part.

[0013] As a further optimization scheme of the present invention, the linear motion mechanism includes a linear motion slide rail fixedly connected to a limit rod, a support plate fixedly connected to the linear motion slide rail, a motor 1 fixedly connected to the support plate, a slider slidably connected to the linear motion slide rail, and a screw connected to the output shaft end of motor 1, the screw is threadedly connected to the slider, and the multi-section electric push rod is connected to the slider.

[0014] As a further optimization scheme of the present invention, the torsion assembly includes an arc-shaped slide rail fixedly connected to the multi-section electric push rod, an arc-shaped slide plate slidably connected to the arc-shaped slide rail, an arc-shaped gear part fixedly connected to the arc-shaped slide plate, and a plurality of elastic extrusion parts fixedly connected to the inner arc surface of the arc-shaped slide plate, and the curvature of the plurality of the arc-shaped slide rails is 90°.

[0015] As a further optimization scheme of the present invention, the driving assembly includes motor 2, a rotating shaft fixedly connected to the output shaft end of motor 2, and a driving gear fixedly connected to the rotating shaft, the driving gear is meshed with the arc gear part, and motor 2 is fixedly connected to one of the arc slide rails.

[0016] The beneficial effect of the present invention is that when prefabricating a steel cage, the present invention can press the binding pieces into the binding piece clamping mechanism, and make multiple binding pieces cross-distributed, and then pass through the intersection of the steel bars. After the binding pieces reach the set position, the multiple binding pieces are gathered and twisted through the spliced ​​torsion mechanism, thereby realizing the binding operation inside the steel cage. The binding pieces after binding are inside the steel cage, and the binding speed is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2It is a view of the matching of the linear moving mechanism and the binding member clamping mechanism of the present invention; Figure 3 The present invention Figure 2 A magnified view of point A in FIG. Figure 4 It is a structural schematic diagram of the linear motion mechanism of the present invention; Figure 5 This is a diagram showing the matching of the linear motion mechanism of the present invention and the multi-section electric push rod; Figure 6 It is a matching view of the torsion assembly and the drive assembly of the present invention; Figure 7 This is a matching view of the elastic clamping assembly and the fixed pulley of the present invention; Figure 8 The present invention Figure 1 Bottom view of .

[0018] In the figure: 1. middle frame; 101. connecting screw hole; 2. gripping part; 3. binding member clamping mechanism; 301. limit rod; 302. slot; 303. elastic clamping assembly; 304. fixed pulley; 4. linear motion mechanism; 401. linear motion slide rail; 402. support plate; 403. motor 1; 404. slider; 405. screw; 5. multi-section electric push rod; 6. spliced ​​torsion mechanism; 61. torsion assembly; 6101. arc slide rail; 6102. arc slide plate; 6103. arc gear part; 6104. elastic extrusion member; 62. drive assembly; 6201. motor 2; 6202. rotating shaft; 6203. drive gear; 7. pressing mechanism; 701. sleeve; 702. pressing member. DETAILED DESCRIPTION

[0019] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only intended to enable those skilled in the art to better understand and implement the subject matter described herein. In addition, the features described relative to some examples may also be combined in other examples.

[0020] Example 1 A method for safely constructing a concrete continuous beam comprises the following steps: Step 100, installing a bridge-building machine on the initial beam section, and performing a pre-compression test on the bridge-building machine after the installation of the bridge-building machine is completed; Specifically: Install the walking system and anchor it, install the main beam and temporarily fix it, install the inverted U-shaped gantry, install the front hanger, side hanger, inner hanger, install the bottom basket and bottom formwork, install the side formwork demoulding system and pull out the side formwork, install the inner formwork, install the electrical control system and monitoring system; Install the travel system and anchor it: Release the axis of the bridge crane travel track, install the track and level it, strictly control the center distance between the tracks, the track must be installed straight, the top surface of the track must be kept horizontal, the height difference of the track should not exceed 5mm, and the track should be anchored, and the front support and drive mechanism should be installed; Install the main beam and temporarily fix it: lay out the main beam installation axis and plane position based on the track, adjust the position of the front support of the main beam, install the reverse buckle wheel at the rear end of the main beam, and the cylinder support legs on the side of the main beam; Install the inverted U-shaped portal frame: first install the rear end C-shaped portal frame crossbeam, anchor it and tighten it in time to ensure longitudinal stability, and then install the remaining two C-shaped hooks in sequence; Install the front hanger, side hanger and inner hanger: When assembling the bridge machine, check the matching of the front and rear hangers, tighten the bolts of each node plate, and apply force evenly to prevent uneven tightness. The fine-rolled threaded steel used in the bridge machine must be protected by PVC pipes or hoses, the connector must be inserted into the thread mouth of sufficient length, and mark the threaded steel with red paint; Install the bottom basket and bottom formwork: Assemble the bottom basket platform on the relatively flat ground near each main pier, and temporarily spot weld the longitudinal beams on the front and rear lower cross beams to form a flat whole. After the bottom basket is assembled, choose to use a winch, truck crane, or tower crane to lift the bottom basket alone or in combination according to the on-site equipment conditions and lifting capacity. After lifting it into place, put on the front and rear suspension rods of the bottom basket, lay the bottom formwork, and adjust the height; Install the side form demoulding system and pull out the side form: lift the outer sliding beam to the exact position inside the side form frame (usually at the vertical center of the side form), and make the front end of the sliding beam exceed the end face of the outer form by a certain length, then fix the sliding beam appropriately, lift the outer form and the outer sliding beam together, and after lifting them into place, install the lifting cylinder and lateral translation cylinder at the lower end of the outer sliding beam, repeat the above method to install the side form and outer sliding beam on the other side; Install the inner mold: install two inner sliding beams, the front end of the sliding beam is hung on the front cross beam through the hanger, and the rear end passes through the suspension wheel and the suspension bracket and is hung on the top plate of the box beam through them, and then install the inner mold top plate and the inner mold truss, so that the inner mold truss falls correctly on the inner sliding beam, and finally install the inner mold side plate; Install the electrical control system and monitoring system: Install the bridge crane's electronic control system, hydraulic system, etc. Connect the oil pipes from left to right according to the markings on the control cabinet. To avoid wrong connection, install them one by one in sequence. After installation, debug the cylinders one by one. Install the electrical and monitoring systems, connect the power supply, and debug the whole machine after installation. The loading test of the bridge-building machine is to load the prefabricated blocks, using a tower crane hoisting method; Step 200, installing the steel cage of the next beam section, after which the concrete of the next beam section is poured, and after the pouring is completed, curing and tensioning are performed; Step 300: After the concrete of the next beam section solidifies for a set time, the formwork is demoulded; Step 400, controlling the bridge-building machine track and the main beam to move along the bridge in sequence; Step 500, repeat steps 200 to 400 until all beam segments are cast.

[0021] Wherein, the installation of the reinforcement cage of the next beam section in step 200 includes the following specific steps: Step 201, based on the drawing parameters, prepare the bottom plate, web plate, top plate and reinforcement; Step 202: Use steel bar tying equipment to tie the bottom plate and web steel bars, and pre-embed the corrugated pipe; Step 203: Install vertical prestressed steel bars and use steel bar tying equipment to tie the top plate steel bars.

[0022] It should be noted that the steel cage should be installed according to the construction drawings and in accordance with relevant specifications; when the steel cage is tied to the beam reinforcement, the number and spacing of the main reinforcement and stirrups should be guaranteed and no omissions should be made; after the steel cage is tied, the frame must be stable and the poured concrete must not be loose or deformed; The order of steel cage binding is as follows: first arrange and bind the bottom plate and web steel bars, and pre-embed the corrugated pipe, and install the vertical prestressed steel bars at the same time, and finally bind the top plate steel bars; after binding, hoist it into the formwork; The vertical prestressing force is a corrugated iron pipe, which is anchored at one end and tensioned at the other end. When installing the corrugated pipe, it is installed together with the fine-rolled threaded steel bars and the anchorage end anchors, and a grouting pipe and a grouting pipe are set; There are a large number of transverse prestressed tendons. During installation, the straightness of the corrugated pipe must be ensured to eliminate the twisting deformation of the beam caused by tensioning, so as to better control the line shape of the main bridge.

[0023] Example 2 like Figure 1-8 As shown, a steel bar binding device for safe construction of a concrete continuous beam is used to implement a safe construction method of a concrete continuous beam as in Example 1, comprising: A middle frame 1, a gripping portion 2 is detachably connected to the middle of the upper end of the middle frame 1, and a plurality of lashing piece clamping mechanisms 3 are detachably connected to the lower end of the middle frame 1, the plurality of lashing piece clamping mechanisms 3 are cross-symmetrically distributed, and two symmetrically distributed lashing piece clamping mechanisms 3 are used to clamp a lashing piece; A plurality of linear moving mechanisms 4, each of which is connected to the binding member clamping mechanism 3. A multi-section electric push rod 5 is connected to the moving end of the linear moving mechanism 4. The linear moving mechanism 4 is used to drive the multi-section electric push rod 5 to move along the length direction of the binding member clamping mechanism 3. The spliced ​​torsion mechanism 6 includes a plurality of torsion components 61 and a driving component 62 arranged on one of the torsion components 61. The plurality of torsion components 61 are respectively connected to a multi-section electric push rod 5. The multi-section electric push rod 5 is used to drive the torsion component 61 to move radially along the middle frame 1. When the plurality of torsion components 61 move a set distance toward the axis of the middle frame 1, they are used to gather the plurality of binding members into a bundle and apply a set pressure value to the plurality of binding members. The driving component 62 is used to apply a set torque value to the plurality of binding members.

[0024] It should be noted that when tying the steel cage, the two tying pieces are clamped on two symmetrically arranged tying piece clamping mechanisms 3 respectively. At this time, the two tying pieces are in a cross-overlapping state. The tying pieces can be made of iron wire or steel wire, and they are in a double-strand state. Hold the holding part 2, align the cross-overlapping areas of the two tying pieces with the intersection of the two steel bars and press down. As the tying piece clamping mechanism 3 passes through the gap between the steel bars, it will carry the ends of the two tying pieces through the gap between the steel bars in the same direction, and the cross-overlapping areas of the tying pieces are pressed on the intersection of the two steel bars. As the middle frame 1 and the tying piece clamping mechanism 3 continue to move down to the set position, a number of multi-section electric push rods 5 begin to simultaneously drive a number of torsion components 61 to move toward the axis of the middle frame 1. As the number of torsion components 61 contact each other and form a ring body, at this time The two binding members are gathered into a bundle from the area below the steel bars, and then torque is applied to the bundled binding members through the drive assembly 62, so that the two binding members begin to spirally twist below the intersection of the two steel bars, so that the two binding members are firmly tied at the intersection of the two steel bars. As the end of the binding member is detached from the binding member clamping mechanism 3 and the spiral twisting is completed, the binding process is completed, the multi-section electric push rod 5 retracts and the torsion assembly 61 is reset. At this time, the binding member clamping mechanism 3 can be pulled out from between the steel bar gaps, and the next set of binding members can be installed, and the binding process of the next set of steel bars can be carried out. The whole process is relatively simple, and no manual binding is required, and there is no need for staff to crouch above the steel cage to perform binding work. It not only effectively reduces the work intensity of the staff, but also improves the binding efficiency.

[0025] In an optional embodiment of the present invention, Figure 2 As shown, a pressing mechanism 7 is fixedly connected at the center position of the lower end of the middle link frame 1. The pressing mechanism 7 includes an elastic pressing component and an elastic force detection component arranged inside the elastic pressing component. The elastic pressing component is used to press the intersection area of ​​several binding members, and the elastic force detection component is used to obtain the pressure value applied by the elastic pressing component to the intersection area of ​​several binding members.

[0026] The elastic pressure covering component includes a sleeve 701 fixedly connected to the middle position of the lower end of the middle link frame 1, a pressure covering part 702 slidably connected inside the sleeve 701, and a spring 1 connected between the pressure covering part 702 and the elastic force detection component. The elastic force detection component is fixedly connected to the inner wall of the sleeve 701, and the elastic force detection component is used to obtain the elastic force change value of the spring 1.

[0027] The elastic force detection component includes a packaging shell fixedly connected to the inner wall of the sleeve 701, an integrated circuit board and a mobile power supply arranged in the packaging shell, and a pressure sensor fixedly connected to the outer wall of the packaging shell. The pressure sensor and the mobile power supply are both electrically connected to the integrated circuit board.

[0028] It should be noted that, as mentioned above, as the clamping mechanism 3 of the binding member moves downward, at this time, the pressing member 702 connected to the middle frame 1 begins to contact the cross-overlapping area of ​​the two binding members. As the spring 1 deforms, the pressing member 702 begins to press the cross-overlapping area of ​​the two binding members and gradually increases the pressing force. On the one hand, the cross-overlapping area of ​​the two binding members can be tightly pressed on the intersection area of ​​the two steel bars, so that the binding member can stably cover the intersection area of ​​the two steel bars, reducing the influence of the movement of the end of the binding member on the cross-overlapping area of ​​the two binding members, and improving the binding stability. As the elastic force of the spring 1 increases to the set value, the pressure sensor therein transmits the elastic force change value to the integrated circuit board in real time. The integrated circuit board successively connects the mobile power supply and the multi-section electric push rod 5, the spliced ​​torsion The circuit between the mechanism 6 and the linear moving mechanism 4 enables the mobile power supply to supply power to the multi-section electric push rod 5, the spliced ​​torsion mechanism 6 and the linear moving mechanism 4 in sequence at set time intervals. When the multi-section electric push rod 5 is connected to the circuit, it starts to drive the torsion component 61 to move toward the axis of the middle frame 1 until several torsion components 61 contact and form a ring body. The driving component 62 starts to work and twists the bundled binding parts. After one rotation, the linear moving mechanism 4 starts to work. The linear moving mechanism 4 drives the multi-section electric push rod 5 and several torsion components 61 forming the ring body to move downward synchronously. As the torsion process continues, the bundled binding parts can be completely twisted into shape, so that the binding parts are stably tied at the intersection of two steel bars, and the buckle part is inside the steel cage.

[0029] In an optional embodiment of the present invention, Figure 1-Figure 3 as well as Figure 7As shown, the binding member clamping mechanism 3 includes a limit rod 301, a slot 302 opened at the lower end of the limit rod 301, two slide grooves symmetrically arranged on the inner wall of the slot 302, an elastic clamping component 303 slidably connected to the inner wall of the slide groove, a spring 2 connected between the elastic clamping component 303 and the slide groove, and a fixed pulley 304 movably connected to the inner wall of the slot 302, the two elastic clamping components 303 are in contact with each other for clamping the binding member, the fixed pulley 304 is in contact with the binding member, and a plurality of connecting screw holes 101 are provided on the middle link frame 1, and the plurality of connecting screw holes 101 are respectively matched with the limit rod 301 and the holding part 2.

[0030] It should be noted that, as mentioned above, when the binding piece is installed on the binding piece clamping mechanism 3, the area close to the end of the binding piece is pressed from the slot 302 into between the two elastic clamping components 303 that are in contact with each other until the binding piece contacts the fixed pulley 304. The two ends of the two binding pieces are respectively limited on two symmetrically distributed limit rods 301. After the limiting is completed, the two binding pieces are in a cross-overlapping state, and as the limit rod 301 is inserted from the gap between the steel bars, the end of the binding piece begins to gradually be pulled out from between the two elastic clamping components 303, and the fixed pulley 304 can make the end of the binding piece be pulled out smoothly and smoothly.

[0031] In an optional embodiment of the present invention, Figure 1-Figure 4 As shown, the linear motion mechanism 4 includes a linear motion slide rail 401 fixedly connected to the limit rod 301, a support plate 402 fixedly connected to the linear motion slide rail 401, a motor 403 fixedly connected to the support plate 402, a slider 404 slidably connected to the linear motion slide rail 401, and a screw 405 connected to the output shaft end of the motor 403, the screw 405 is threadedly connected to the slider 404, and a multi-section electric push rod 5 is connected to the slider 404.

[0032] It should be noted that, as mentioned above, when the linear moving mechanism 4 drives the multi-section electric push rod 5 to move downward, the motor 403 drives the screw 405 to rotate. When the screw 405 rotates, the slider 404 slidingly connected to the linear moving rail 401 begins to move along the length direction of the binding member clamping mechanism 3 under the action of the thread, and during the movement, it carries the multi-section electric push rod 5 and the torsion assembly 61 connected to the multi-section electric push rod 5 to move in the same direction and distance.

[0033] In an optional embodiment of the present invention, Figure 3 , Figure 5 as well as Figure 6As shown, the torsion assembly 61 includes an arc-shaped slide rail 6101 fixedly connected to the multi-section electric push rod 5, an arc-shaped slide plate 6102 slidably connected to the arc-shaped slide rail 6101, an arc-shaped gear portion 6103 fixedly connected to the arc-shaped slide plate 6102, and a plurality of elastic extrusion parts 6104 fixedly connected to the inner arc surface of the arc-shaped slide plate 6102. The arc angles of the plurality of arc-shaped slide rails 6101 are all 90°.

[0034] The driving assembly 62 includes a second motor 6201 , a rotating shaft 6202 fixedly connected to the output shaft end of the second motor 6201 , and a driving gear 6203 fixedly connected to the rotating shaft 6202 . The driving gear 6203 is meshed with the arc gear portion 6103 . The second motor 6201 is fixedly connected to one of the arc slide rails 6101 .

[0035] It should be noted that, as described above, when the binding piece is twisted and buckled, the multiple arc-shaped slide rails 6101 contact each other and form a circular track, and the multiple arc-shaped slide plates 6102 form a circular twisting piece. The multiple elastic extrusion pieces 6104 on the arc-shaped slide plates 6102 are tightly pressed on the binding piece gathered into a bundle to form a large friction force. Then, the motor 2 6201 drives the driving gear 6203 to rotate, and the multiple arc-shaped gear parts 6103 form a complete circular gear. Driven by 03, it starts to rotate around the axis of the middle link frame 1, and drives multiple arc-shaped slide plates 6102 to form an annular torsion piece to rotate in the same direction and angle. During the rotation process, torque can be applied to the bundled binding pieces, and the binding pieces can be twisted and knotted. At the same time, the multi-section electric push rod 5 and the arc-shaped slide rail 6101 are driven downward by the linear moving mechanism 4. In conjunction with the torsion process, the torsion process can be continued to the end of the binding piece. After the binding is completed, the buckle part of the binding piece is inside the steel cage.

[0036] The present embodiment is described above, but the present embodiment is not limited to the above-mentioned specific implementation manner. The above-mentioned specific implementation manner is merely illustrative and not restrictive. Under the guidance of the present embodiment, ordinary technicians in this field can also make many forms, which are all within the protection of the present embodiment.

Claims

1. A method for safe construction of a concrete continuous beam, characterized in that: The following steps are involved: Step 100, installing a bridge-building machine on the initial beam section, and performing a pre-compression test on the bridge-building machine after the installation of the bridge-building machine is completed; Step 200, installing the steel cage of the next beam section, after which the concrete of the next beam section is poured, and after the pouring is completed, curing and tensioning are performed; Step 300: After the concrete of the next beam section solidifies for a set time, the formwork is demoulded; Step 400, controlling the bridge-building machine track and the main beam to move along the bridge in sequence; Step 500, repeat steps 200 to 400 until all beam segments are cast.

2. A method for safe construction of a concrete continuous beam according to claim 1, characterized in that: The step 200 of installing the reinforcement cage of the next beam section includes the following specific steps: Step 201, based on the drawing parameters, prepare the bottom plate, web plate, top plate and reinforcement; Step 202: Use steel bar tying equipment to tie the bottom plate and web steel bars, and pre-embed the corrugated pipe; Step 203: Install vertical prestressed steel bars and use steel bar tying equipment to tie the top plate steel bars.

3. A steel bar tying device for safe construction of concrete continuous beams, characterized in that: A method for safely constructing a concrete continuous beam as claimed in claim 2, comprising: A middle frame (1), wherein a gripping portion (2) is detachably connected to the middle portion of the upper end of the middle frame (1), and a plurality of binding piece clamping mechanisms (3) are detachably connected to the lower end of the middle frame (1), wherein the plurality of binding piece clamping mechanisms (3) are cross-symmetrically distributed, and two symmetrically distributed binding piece clamping mechanisms (3) are used to clamp a binding piece; A plurality of linear motion mechanisms (4), wherein the plurality of linear motion mechanisms (4) are respectively connected to the binding member clamping mechanism (3), and a multi-section electric push rod (5) is connected to the moving end of the linear motion mechanism (4), and the linear motion mechanism (4) is used to drive the multi-section electric push rod (5) to move along the length direction of the binding member clamping mechanism (3); A spliced ​​torsion mechanism (6), the spliced ​​torsion mechanism (6) comprising a plurality of torsion assemblies (61) and a driving assembly (62) arranged on one of the torsion assemblies (61), the plurality of torsion assemblies (61) being respectively connected to a multi-section electric push rod (5), the multi-section electric push rod (5) being used to drive the torsion assemblies (61) to move along the radial direction of the middle frame (1), and when the plurality of torsion assemblies (61) move a set distance toward the axis of the middle frame (1), the plurality of binding members are gathered into a bundle and a set pressure is applied to the plurality of binding members, and the driving assembly (62) is used to apply a set torque to the plurality of binding members.

4. The steel bar tying equipment for safe construction of concrete continuous beams according to claim 3 is characterized in that: A pressing mechanism (7) is fixedly connected at the center position of the lower end of the middle link frame (1), and the pressing mechanism (7) comprises an elastic pressing component and an elastic force detection component arranged inside the elastic pressing component, the elastic pressing component is used to press the intersection area of ​​several binding members, and the elastic force detection component is used to obtain the pressure value applied by the elastic pressing component to the intersection area of ​​several binding members.

5. The steel bar tying equipment for safe construction of concrete continuous beams according to claim 4 is characterized in that: The elastic pressure-covering component comprises a sleeve (701) fixedly connected to the middle position of the lower end of the middle frame (1), a pressure-covering member (702) slidably connected to the inside of the sleeve (701), and a spring 1 connected between the pressure-covering member (702) and the elastic force detection component, wherein the elastic force detection component is fixedly connected to the inner wall of the sleeve (701), and the elastic force detection component is used to obtain the elastic force change value of the spring 1.

6. The steel bar tying equipment for safe construction of concrete continuous beams according to claim 5, characterized in that: The elastic force detection component comprises a packaging shell fixedly connected to the inner wall of the sleeve (701), an integrated circuit board and a mobile power supply arranged in the packaging shell, and a pressure sensor fixedly connected to the outer wall of the packaging shell, wherein the pressure sensor and the mobile power supply are both electrically connected to the integrated circuit board.

7. The steel bar tying equipment for safe construction of concrete continuous beams according to claim 6, characterized in that: The binding piece clamping mechanism (3) comprises a limit rod (301), a slot (302) provided at the lower end of the limit rod (301), two slide grooves symmetrically arranged on the inner wall of the slot (302), an elastic clamping component (303) slidably connected to the inner wall of the slide groove, a spring connected between the elastic clamping component (303) and the slide groove, and a fixed pulley (304) movably connected to the inner wall of the slot (302), the two elastic clamping components (303) contact each other and are used to clamp the binding piece, the fixed pulley (304) contacts the binding piece, and the middle connecting frame (1) is provided with a plurality of connecting screw holes (101), and the plurality of connecting screw holes (101) are respectively arranged to match the limit rod (301) and the holding portion (2).

8. The steel bar tying equipment for safe construction of concrete continuous beams according to claim 7, characterized in that: The linear motion mechanism (4) comprises a linear motion slide rail (401) fixedly connected to a limit rod (301), a support plate (402) fixedly connected to the linear motion slide rail (401), a motor 1 (403) fixedly connected to the support plate (402), a slider (404) slidably connected to the linear motion slide rail (401), and a screw rod (405) connected to an output shaft end of the motor 1 (403), wherein the screw rod (405) is threadedly connected to the slider (404), and the multi-section electric push rod (5) is connected to the slider (404).

9. The steel bar tying equipment for safe construction of concrete continuous beams according to claim 8, characterized in that: The torsion assembly (61) comprises an arc-shaped slide rail (6101) fixedly connected to the multi-section electric push rod (5), an arc-shaped slide plate (6102) slidably connected to the arc-shaped slide rail (6101), an arc-shaped gear portion (6103) fixedly connected to the arc-shaped slide plate (6102), and a plurality of elastic extrusion members (6104) fixedly connected to the inner arc surface of the arc-shaped slide plate (6102), wherein the arc angles of the plurality of arc-shaped slide rails (6101) are all 90°.

10. The steel bar tying equipment for safe construction of concrete continuous beams according to claim 9, characterized in that: The driving assembly (62) comprises a second motor (6201), a rotating shaft (6202) fixedly connected to the output shaft end of the second motor (6201), and a driving gear (6203) fixedly connected to the rotating shaft (6202), wherein the driving gear (6203) is meshed with the arc-shaped gear portion (6103), and the second motor (6201) is fixedly connected to one of the arc-shaped slide rails (6101).

Images