Bilateral prestressed truss reinforcing structure for concrete box girder web

Abstract

The invention relates to the technical field of building construction, in particular to a bilateral prestress truss reinforcing structure for a concrete box girder web. Comprising a concrete box girder, a box girder inner cavity is formed in the concrete box girder, a plurality of webs are arranged in the box girder inner cavity and used for supporting the concrete box girder, and prestress reinforcing devices are arranged at the two ends of each web and used for enhancing the bearing capacity; a plurality of anchor holes are evenly formed in the two ends of the supporting position of the web in a penetrating mode. Prestress reinforcing devices are supported and fixed to the anchor holes through anchor rods. The beneficial effects of the invention are that the active structure is adopted to solve the problems that the conversion of bearing force cannot be specifically supported and adjusted, gaps are easy to appear after a long time, and the reinforcing effect is not ideal; and through the detachable characteristic of the automatic adjusting structure, automatic adaptive use of adjustment of the web plate is facilitated, and adjustment and control of concrete box girder repair are further facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and more particularly to a double-sided prestressed truss reinforcement structure for a concrete box beam web. Background Art

[0002] The reinforcement of existing concrete truss building structures is generally achieved by wrapping steel reinforcement and increasing the cross-section for wrapping reinforcement, but these are passive reinforcements, and the conversion of bearing force cannot be specifically supported and adjusted. Gaps are prone to appear over time, and the reinforcement effect is generally not ideal; similar to the assembled concrete truss building structure reinforcement equipment with patent number CN202010750287.5, it includes side support plates, positioning plates, top support plates, splicing plates and positioning mechanisms, the number of side support plates is two, and a positioning plate is vertically distributed at the front and rear ends of the inner side of each side support plate, and the positioning plate The upper end of the truss is connected to the side of the side support plate, and a top extension support plate is distributed on the inner end of each positioning plate. A splicing plate is connected between the two adjacent top extension support plates on the left and right, and a positioning mechanism is installed on the inner side surface of the upper end of each side support plate. This invention can solve the problems existing in the construction of existing concrete frames: when the concrete frame is built, it is impossible to position and set it based on the truss, resulting in a deviation of the truss support platform relative to the truss, resulting in poor construction effect of the support platform, and when the concrete is poured at the lower end of the concrete truss, a gap is likely to exist between the upper end of the truss and the main structure of the building, resulting in poor support effect of the truss.

[0003] However, this structure is a passive reinforcement structure, and its load-bearing capacity conversion cannot be specifically supported and adjusted. Gaps are likely to appear over time, and the reinforcement effect is not ideal. It is not as good as the use of an active reinforcement structure. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problem in the prior art that the conversion of bearing force cannot be solved by adopting an active structure, gaps are likely to appear over time, and the reinforcement effect is not ideal; through the detachable characteristics of its automatic adjustment structure, the automatic adaptation of the web adjustment is convenient, which further facilitates the regulation of the repair of concrete box beams.

[0005] To this end, the technical solution adopted is that the concrete box girder web of the present invention is reinforced with a double-sided prestressed truss structure, including a concrete box girder, a box girder inner cavity is provided in the concrete box girder, and a plurality of webs are provided in the box girder inner cavity for supporting the concrete box girder, and prestressed reinforcers are provided at both ends of the webs for enhancing the bearing capacity.

[0006] Preferably, a plurality of anchor holes are evenly provided at both ends of the support portion of the web, and the prestressed reinforcer is fixed to the anchor holes through anchor rods.

[0007] Preferably, the prestressed reinforcer includes a detachable driver, an external fixed support platform, a load-bearing adjustment top platform, a steel hoop top plate and a central pusher, two detachable drivers are respectively plugged and fixed on both sides of the external fixed support platform, two ends of the external fixed support platform are respectively connected to two load-bearing adjustment top platforms for supporting the end forces through threaded cooperation, two ends of the steel hoop top plate are respectively hinged to the two load-bearing adjustment top platforms at the ends through short shafts, the two steel hoop top plates are symmetrically arranged on both sides of the web support, the detachable driver drives the central pusher by plugging, the central pusher is threadedly connected to the external fixed support platform, the central pusher pushes the middle end of the steel hoop top plate to fit tightly against the web, and the load-bearing adjustment top platform adjusts the two ends of the steel hoop top plate to fit tightly against the web.

[0008] Preferably, the external fixed support platform includes an external locking frame, which is assembled and connected by supporting threaded anchor rods; the threaded anchor rods are provided with card slots and fixing nuts for locking the supporting external locking frame; the supporting threaded anchor rods are inserted and fixed in the anchor holes; the outer walls on both sides of the external locking frame are provided with disassembly slots for plugging in removable drivers, and the centers of both sides of the external locking frame are provided with central threaded cylinders, and both ends of the external locking frame are symmetrically provided with end tightening threaded holes; and limiting slide grooves are symmetrically provided on both sides of the external locking frame.

[0009] Preferably, the detachable driver includes a disassembly bracket, the inner wall of the disassembly bracket is provided with a plug-in platform, the locking screw is inserted into the plug-in platform, and the locking screw is connected to the disassembly slot of the outer locking frame through threaded cooperation. An automatic propulsion driver is fixed to one end of the disassembly bracket, and the automatic propulsion driver is connected to the internal threaded external gear cylinder through a synchronous belt transmission. The internal threaded external gear cylinder is rotatably connected to the other end of the disassembly bracket, and the interior of the internal threaded external gear cylinder is connected to the spline screw shaft through threaded cooperation; the spline screw shaft is connected to the disassembly bracket through threaded cooperation.

[0010] Preferably, the load-bearing adjustment top platform includes an end tightening screw, which is connected to the end tightening threaded hole through threaded cooperation, and the end tightening screw is rotatably connected to the end pushing platform. The side end of the end pushing platform is connected to the end fine-tuning screw through threaded cooperation, and the end fine-tuning screw is rotatably connected to the end hinged slide, and the end hinged slide is limited to slide in the limit groove platform, and the limit groove platform is fixed in the end pushing platform; the end hinged slide is hinged to the steel hoop top plate through a short axis; the end fine-tuning screw slides in the limit slide.

[0011] Preferably, the center ejector includes a spline groove screw and a center ejector frame, a spline groove is provided in the spline groove screw for inserting the spline screw shaft; the outer wall of the spline groove screw is connected to the center threaded barrel through threaded cooperation, the spline groove screw is rotatably connected to the center of the center ejector frame, and the center ejector frame is wrapped and buckled at both ends at the center of the two steel hoop top plates.

[0012] Preferably, the steel hoop top plate includes two hinged steel rods, a plurality of steel hoop plates are fixed between the two hinged steel rods, and the steel hoop plates are attached to the web.

[0013] Preferably, the centers of the articulated steel rods are connected by short axis articulation.

[0014] Preferably, the articulated steel rod is hinged to connect multiple articulated steel rods via short axes.

[0015] Preferably, the steel hoop plate includes a steel hoop frame, a top plate and multiple spring shafts. The steel hoop frame is fixed between two hinged steel rods. Multiple spring shafts are slidably arranged in the steel hoop frame. The multiple spring shafts are all fixed on the top plate. Springs are sleeved on the spring shafts and arranged between the steel hoop frame and the top plate.

[0016] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained through the structures specifically pointed out in this application document.

[0017] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention in the first direction;

[0020] Figure 2 It is a schematic diagram of the overall structure of the present invention in the second direction;

[0021] Figure 3 It is a schematic diagram of the overall structure of the present invention in the second direction;

[0022] Figure 4 It is a structural schematic diagram of the concrete box girder of the present invention;

[0023] Figure 5 It is a schematic structural diagram of the detachable driver of the present invention;

[0024] Figure 6 This is a schematic diagram of the connection structure of the internal thread external gear cylinder of the present invention;

[0025] Figure 7 It is a structural schematic diagram of the spline screw shaft of the present invention;

[0026] Figure 8This is a schematic diagram of the local structure of the prestressed reinforcer of the present invention. Figure 1 ;

[0027] Figure 9 This is a schematic diagram of the structure of the external fixation support platform of the present invention. Figure 1 ;

[0028] Figure 10 This is a schematic diagram of the structure of the external fixation support platform of the present invention. Figure 2 ;

[0029] Figure 11 This is a schematic diagram of the local structure of the prestressed reinforcer of the present invention. Figure 2 ;

[0030] Figure 12 This is a schematic diagram of the structure of the load-bearing and adjustable top platform of the present invention. Figure 1 ;

[0031] Figure 13 This is a schematic diagram of the structure of the load-bearing and adjustable top platform of the present invention. Figure 2 ;

[0032] Figure 14 It is a structural schematic diagram of the central ejector of the present invention;

[0033] Figure 15 It is a partial enlarged structural schematic diagram of the central ejector of the present invention;

[0034] Figure 16 This is a schematic diagram of the structure of the steel hoop plate of the present invention Figure 1 ;

[0035] Figure 17 This is a schematic diagram of the structure of the steel hoop plate of the present invention Figure 2 .

[0036] In the figure: concrete box girder 1; box girder cavity 2; web 3; prestressed reinforcer 4; detachable drive 5; external fixed support platform 6; load-bearing adjustment top platform 7; steel hoop top plate 8; center pusher 9; disassembly bracket 10; insertion platform 11; locking screw 12; automatic propulsion drive 13; internal threaded external gear cylinder 14; spline screw shaft 15; external locking frame 16; support threaded anchor rod 17; disassembly slot 18; center threaded cylinder 19; end tightening threaded hole 20; limiting slide 21; end tightening screw 22; end propulsion platform 23; end fine-tuning screw 24; limiting slot platform 25; end hinged slide 26; steel hoop plate 27; spline groove screw 28; center pusher frame 29; steel hoop frame 30; top plate 31; spring shaft 32; anchor hole 33. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] In the description of this application, it should be understood that the terms "middle", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0039] In addition, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0040] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0041] Example 1:

[0042] like Figure 1 and Figure 2 As shown, the concrete box girder web is reinforced with a double-sided prestressed truss structure, including a concrete box girder 1, a box girder cavity 2 is provided in the concrete box girder 1, and a plurality of webs 3 are provided in the box girder cavity 2 for supporting the concrete box girder 1. Prestressed reinforcers 4 are provided at both ends of the webs 3 for enhancing the bearing capacity.

[0043] The working principle and beneficial effects of this embodiment are as follows: the concrete box girder 1 is usually used in projects such as bridges, viaducts, and large-span buildings. It usually has high bending, shear and torsion resistance and can withstand various loads such as vehicles, pedestrians, wind loads, and earthquake forces. In actual use, its interior is usually in the form of a box girder cavity 2. The box girder cavity 2 is provided with multiple webs 3 for supporting the concrete box girder 1. The multiple webs 3 play a supporting role. When the webs 3 are damaged or the bearing capacity is insufficient, it is necessary to provide auxiliary support for the webs 3 to ensure that its bearing capacity can be enhanced. Therefore, prestressed reinforcers 4 are added on both sides of the webs 3. The prestressed reinforcers 4 are automatically squeezed and supported by the webs 3 by driving and adjusting the prestressed reinforcers 4. Then, fine fitting adjustment is performed at both ends of the prestressed reinforcer 4 so that the prestressed reinforcer 4 can be stably fitted and supported at both ends of the web 3.

[0044] By adopting an active structure, the problem that the conversion of bearing force cannot be achieved by specific support adjustment, gaps are likely to appear over time, and the reinforcement effect is not ideal is solved; through the detachable characteristics of its automatic adjustment structure, the automatic adaptation of the web adjustment is convenient, which further facilitates the regulation of concrete box girder repair.

[0045] Example 2:

[0046] like Figure 1 — Figure 17 As shown, the concrete box girder web is reinforced with a double-sided prestressed truss structure, and a plurality of anchor holes 33 are evenly provided at both ends of the support of the web 3, and the prestressed reinforcer 4 is fixed on the anchor hole 33 by anchor rods;

[0047] The working principle and beneficial effects of this embodiment are as follows: by drilling multiple anchor holes 33 at designated locations in a safe place around the damaged or broken part of the web 3, and by inserting and fixing the supporting threaded anchor rod 17 in the anchor hole 33, a supporting effect is played, and then the prestressed reinforcer 4 is locked and fixed on the supporting threaded anchor rod 17, and the damaged or broken part of the web 3 is further clamped and fitted, so that it is effectively wrapped and plays a supporting and fixing effect.

[0048] Example 3:

[0049] like Figure 1 — Figure 17As shown, the concrete box girder web is reinforced with a double-sided prestressed truss structure. The prestressed reinforcer 4 includes a detachable driver 5, an external fixed support platform 6, a load-bearing adjustment top platform 7, a steel hoop top plate 8 and a central pusher 9. Two detachable drivers 5 are respectively plugged and fixed on both sides of the external fixed support platform 6. The two ends of the external fixed support platform 6 are respectively connected to two load-bearing adjustment top platforms 7 for supporting the end forces through threaded cooperation. The two ends of the steel hoop top plate 8 are respectively hinged to the two load-bearing adjustment top platforms 7 at the ends through short shafts. The two steel hoop top plates 8 are symmetrically arranged on both sides of the web 3 support. The detachable driver 5 drives the central pusher 9 by plugging. The central pusher 9 is threadedly connected to the external fixed support platform 6. The central pusher 9 pushes the middle end of the steel hoop top plate 8 to fit tightly on the web 3. The load-bearing adjustment top platform 7 adjusts the two ends of the steel hoop top plate 8 to fit tightly on the web 3.

[0050] The working principle and beneficial effects of this embodiment are as follows: first, the steel hoop top plate 8 that needs to be adapted to the length is installed in the external fixed support platform 6 through the load-bearing adjustment top platform 7, the central pusher 9 is installed in the external fixed support platform 6, and the external fixed support platform 6 is locked on multiple supporting threaded anchor rods 17, so that the two steel hoop top plates 8 are respectively arranged at the two ends of the web 3 to be supported; two detachable drivers 5 are respectively inserted and fixed at the two ends of the external fixed support platform 6, and the two detachable drivers 5 are respectively inserted into the two central pushers 9 located inside the box beam inner cavity 2 or outside the concrete box beam 1 through splines. The detachable drivers 5 are automatically controlled to drive the two central pushers 9 to simultaneously squeeze the hinges of the two steel hoop top plates 8 inward, so that the two steel hoop top plates 8 are simultaneously squeezed inward and fit at the place where auxiliary support of the web 3 is required, and at the same time, the external fixed support The two ends of the support platform 6 slowly adjust the load-bearing adjustment top platform 7 to adapt to the extrusion and fit where the web 3 needs auxiliary support, and then slowly tighten and close to fit where the web 3 needs auxiliary support, and then support the web 3 as a whole where auxiliary support is needed. Take out the two detachable drivers 5 to form a stabilizing device. The entire web 3 and the two steel hoop top plates 8 of the tightened steel support structure will exert a force on the load-bearing adjustment top platform 7 at both ends, and then use an active structure to solve the problem that the conversion of bearing force cannot obtain specific support adjustment, gaps are likely to appear over time, and the reinforcement effect is not ideal; by using the characteristics of automatic drive adjustment and the detachable characteristics of its automatic adjustment structure, it is convenient to automatically adapt and use the web to adjust and adjust, and further facilitates the problem of regulating and controlling the repair of concrete box beams.

[0051] Example 4:

[0052] like Figure 1 — Figure 17As shown, the concrete box girder web is reinforced with a double-sided prestressed truss structure, and the external fixed support platform 6 includes an external locking frame 16, which is assembled and connected by supporting threaded anchor rods 17 in the external locking frame; the threaded anchor rods 17 are provided with card slots and fixing nuts for locking the supporting external locking frame 16; the supporting threaded anchor rods 17 are inserted and fixed in the anchor holes 33; the outer walls on both sides of the external locking frame 16 are provided with disassembly slots 18 for plugging in the detachable driver 5, and the centers of both sides of the external locking frame 16 are provided with central threaded cylinders 19, and the two ends of the external locking frame 16 are symmetrically provided with end tightening threaded holes 20; and the two sides of the external locking frame 16 are symmetrically provided with limiting slide grooves 21.

[0053] The working principle and beneficial effects of this embodiment are as follows: after determining that the web 3 needs to be supported by auxiliary means, the supporting threaded anchor rod 17 is inserted and fixed in the pre-set anchor hole 33, and the outer locking frame 16 is inserted into the slot of the supporting threaded anchor rod 17, and then the outer locking frame 16 is locked and fixed on the supporting threaded anchor rod 17 by the fixing nut, thereby completing the locking and fixing of the outer locking frame 16; in combination with the needs of different environments, the supporting rod can be extended by bolt connection on the outer locking frame 16 to play the role of auxiliary and stable support; the outer wall of the outer locking frame 16 is provided with a disassembly slot 18 Used to plug in the detachable driver 5; a center threaded cylinder 19 is provided on the outer locking frame 16 for connecting the center pusher 9; limiting slots 21 are provided on both sides of the end of the outer locking frame 16 to prevent interference when adjusting the load-bearing adjustment top platform 7; end tightening threaded holes 20 are provided at the ends of the two outer locking frames 16 for connecting the load-bearing adjustment top platform 7 so that it can be supported and stressed at the end; at the same time, the steel structure parts of the internal threaded holes in multiple places are forged and used. In order to ensure that the bearing capacity is enhanced, the bolts used in its parts are also forged and used.

[0054] Example 5:

[0055] like Figure 1 — Figure 17 As shown, the web of the concrete box beam is reinforced with a double-sided prestressed truss structure, and the detachable drive 5 includes a disassembly bracket 10. The inner wall of the disassembly bracket 10 is provided with a platform 11, and a locking screw 12 is inserted into the platform 11. The locking screw 12 is connected to the disassembly slot 18 of the outer locking frame 16 through threaded fitting. An automatic propulsion drive 13 is fixed to one end of the disassembly bracket 10, and the automatic propulsion drive 13 is connected to the internal threaded external gear cylinder 14 through a synchronous belt drive. The internal threaded external gear cylinder 14 is rotatably connected to the other end of the disassembly bracket 10, and the interior of the internal threaded external gear cylinder 14 is connected to the spline screw shaft 15 through threaded fitting; the spline screw shaft 15 is connected to the disassembly bracket 10 through threaded fitting.

[0056] The working principle and beneficial effects of this embodiment are as follows: an inserting platform 11 is provided on the inner wall of the disassembly bracket 10, and the disassembly bracket 10 is inserted into the disassembly slot 18 through the inserting platform 11, and the locking screw 12 is threadedly engaged in the inserting platform 11 and the outer locking frame 16, thereby facilitating the installation and removal of the disassembly bracket 10;

[0057] An automatic propulsion driver 13 is fixed to one end of the disassembly bracket 10, and the automatic propulsion driver 13 is controlled to rotate forward and reverse. The automatic propulsion driver 13 is connected to the internal threaded external gear cylinder 14 through a synchronous belt drive, so that the internal threaded external gear cylinder 14 is rotatably connected to the other end of the disassembly bracket 10. The interior of the rotating internal threaded external gear cylinder 14 is connected to the spline screw shaft 15 through a threaded fit, thereby driving the spline screw shaft 15 to rotate forward and reverse in the disassembly bracket 10. The spline screw shaft 15 is connected to the disassembly bracket 10 through its threaded fit, thereby achieving propulsion in the disassembly bracket 10, and the spline screw shaft 15 is splined into the center ejector 9 to drive it to slide inward and outward.

[0058] The disassembly bracket 10 that has completed the drive adjustment can be disassembled from the stable structure to prevent it from automatically affecting use; at the same time, the central pusher 9 is automatically adjusted and driven by transmission inside the box beam cavity 2 where it is inconvenient to operate or outside the suspended concrete box beam 1, effectively improving the work efficiency while ensuring the safety of the operator; at the same time, the use of remote-controlled automatic propulsion drive 13 can also effectively control while preventing operation in an overly dangerous and inconvenient environment.

[0059] Example 6:

[0060] like Figure 1 — Figure 17 As shown, the web of the concrete box beam is reinforced with a double-sided prestressed truss structure, and the load-bearing adjustment top platform 7 includes an end tightening screw 22, which is connected to the end tightening threaded hole 20 through threaded cooperation, and the end tightening screw 22 is rotatably connected to the end pushing platform 23. The side end of the end pushing platform 23 is connected to the end fine-tuning screw 24 through threaded cooperation, and the end fine-tuning screw 24 is rotatably connected to the end articulated slide 26. The end articulated slide 26 is limited and slides in the limit groove platform 25, and the limit groove platform 25 is fixed in the end pushing platform 23; the end articulated slide 26 is hinged to the steel hoop top plate 8 through a short axis; the end fine-tuning screw 24 slides in the limit slide 21.

[0061] The working principle and beneficial effects of this embodiment are as follows: the end tightening screw 22 is connected to the end tightening threaded hole 20 through threaded engagement, and the end tightening screw 22 is rotatably connected to the end pushing platform 23, thereby enabling the position of the end pushing platform 23 to be adjusted at the outer locking frame 16 of the end. At the same time, the end tightening screw 22 bears the force of the entire web 3 and the two steel hoop top plates 8 of the tightened steel support structure at the end, so the end tightening screw 22 is made of high-strength bolts;

[0062] By threading the side end of the end pushing platform 23 to connect the end fine-tuning screw 24, the end fine-tuning screw 24 is rotated in the end pushing platform 23, and then the end fine-tuning screw 24 rotating on the side end of the end hinged slide 26 pushes the end hinged slide 26 to slide in the limit groove platform 25. When the end tightening screw 22 is rotated, the two end fine-tuning screws 24 are limited to slide in the limit slide groove 21 to prevent unnecessary interference.

[0063] By rotating the two end fine-tuning screws 24 in the end pushing platform 23, and then because the end fine-tuning screws 24 are rotated and connected to the end hinged slide 26, the end hinged slide 26 is limited and slid in the limit groove platform 25 of the end pushing platform 23; thereby, the steel hoop top plate 8 whose end is hinged in the end hinged slide 26 can be slid and adjusted, thereby achieving the effect of fine adjustment of the end of the steel hoop top plate 8, so that it can be adapted for use in the adjustment under the overall adjustment effect; it is used to adapt to the extrusion and fit at the place where auxiliary support is needed for the web 3, thereby achieving slow tightening and closing fit at the place where auxiliary support is needed for the web 3, and then overall support is provided for the place where auxiliary support is needed for the web 3.

[0064] Example 7:

[0065] like Figure 1 — Figure 17 As shown, the web of the concrete box girder is reinforced with a double-sided prestressed truss structure. The central ejector 9 includes a spline groove screw 28 and a central ejector frame 29. The spline groove screw 28 is provided with a spline groove for inserting the spline screw shaft 15; the outer wall of the spline groove screw 28 is connected to the central threaded tube 19 through threaded cooperation, and the spline groove screw 28 is rotatably connected to the center of the central ejector frame 29. The central ejector frame 29 is wrapped and buckled at both ends at the center of the two steel hoop top plates 8.

[0066] The working principle and beneficial effects of this embodiment are as follows: the central ejector 9 is initially set at the hinge of the steel hoop top plate 8 or the place where the web 3 needs to bear the most force; the spline screw shaft 15 is inserted into the spline groove screw 28 by installing the detachable driver 5, and the spline screw shaft 15 that rotates forward or backward drives the spline groove screw 28 to rotate in the central threaded barrel 19, and then the spline groove screw 28 is displaced inward or outward through the thread engagement in the central threaded barrel 19. The inwardly displaced spline groove screw 28 drives the center of the central ejection frame 29, so that the central ejection frame 29 is wrapped and buckled at the center of the two steel hoop top plates 8 At both ends of the rim, the central pushing frame 29 pushes the two steel hoop top plates 8 to move and shrink inward, and the two steel hoop top plates 8 that are continuously squeezed and shrunk shrink inward through the characteristics of their internal hinges has to fit where the web 3 needs auxiliary support, and cooperate with the end fine-tuning screw 24 that continuously fine-tunes the corresponding force position, so that the two steel hoop top plates 8 as a whole can fit tightly where the web 3 needs auxiliary support; it is used to adapt to the extrusion and fit where the web 3 needs auxiliary support, and then realize slow tightening and closing to fit where the web 3 needs auxiliary support, and then provide overall support to the web 3 that needs auxiliary support.

[0067] Example 8:

[0068] like Figure 1 — Figure 17 As shown, the concrete box girder web is reinforced with a double-sided prestressed truss structure, and the steel hoop top plate 8 includes two hinged steel rods, and multiple steel hoop plates 27 are fixed between the two hinged steel rods, and the steel hoop plates 27 are attached to the web 3.

[0069] The working principle and beneficial effects of this embodiment are as follows: the steel hoop top plate 8 is composed of two hinged steel rods, and multiple steel hoop plates 27 are fixed between the two hinged steel rods. The steel hoop plates 27 are attached to the web 3. The two hinged steel rods that are adjusted drive the multiple steel hoop plates 27 to fit tightly on the web 3, thereby providing auxiliary support for the web 3 where it is needed, so as to provide stable support.

[0070] Example 9:

[0071] like Figure 1 — Figure 17 As shown, the web of the concrete box beam is reinforced with a double-sided prestressed truss structure, and the centers of the hinged steel rods are connected by short-axis hinges.

[0072] The working principle and beneficial effects of this embodiment are as follows: the centers of the articulated steel rods are connected by short-axis articulation, which facilitates force driving at the centers of the articulated steel rods and facilitates the effectiveness of the overall active reinforcement structure.

[0073] Example 10:

[0074] like Figure 1 — Figure 17 As shown, the concrete box girder web is reinforced with a double-sided prestressed truss structure, and the hinged steel rods are connected by short-axis hinges to connect multiple hinged steel rods.

[0075] The working principle and beneficial effects of this embodiment are as follows: multiple articulated steel rods are connected by short-axis articulation in the articulated steel rod in order to adapt to webs 3 of different lengths and adjust the length so that they can be more suitably used on the concrete box girder 1.

[0076] Example 11:

[0077] like Figure 1 — Figure 17 As shown, the web of the concrete box girder is reinforced with a double-sided prestressed truss structure. The steel hoop plate 27 includes a steel hoop frame 30, a top plate 31 and a plurality of spring shafts 32. The steel hoop frame 30 is fixed between two hinged steel rods. A plurality of spring shafts 32 are slidably arranged in the steel hoop frame 30. The plurality of spring shafts 32 are all fixed on the top plate 31. A spring is sleeved on the spring shaft 32 and is arranged between the steel hoop frame 30 and the top plate 31.

[0078] The working principle and beneficial effects of this embodiment are as follows: in combination with different wrapping strengths, a steel hoop plate 27 with a steel hoop frame 30, a top plate 31 and multiple spring shafts 32 is selectively used, and the two hinged steel rods that are driven and adjusted carry the steel hoop frame 30, the top plate 31 and the multiple spring shafts 32 to fit inwardly with the web 3, and the top plate 31 that is subjected to the extrusion force has a buffering effect under the action of the multiple spring shafts 32, preventing the web 3 from being damaged by excessive fitting force, and at the same time playing an effective role in protecting and buffering the force; it needs to be selectively adapted for use in combination with different environments.

[0079] The above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention also fall within the scope of protection of the present invention.

Claims

1. The concrete box girder web is reinforced with double-sided prestressed trusses, which are characterized by: The invention comprises a concrete box girder (1), wherein a box girder inner cavity (2) is provided in the concrete box girder (1), a plurality of webs (3) are provided in the box girder inner cavity (2) for supporting the concrete box girder (1), and prestressed reinforcers (4) are provided at both ends of the webs (3) for enhancing the bearing capacity.

2. The double-sided prestressed truss reinforcement structure for the web of a concrete box beam according to claim 1 is characterized in that: A plurality of anchor holes (33) are evenly provided at both ends of the support portion of the web (3), and the prestressed reinforcer (4) is fixed to the anchor holes (33) via anchor rods.

3. The double-sided prestressed truss reinforcement structure for the web of a concrete box beam according to claim 2, characterized in that: The prestressed reinforcer (4) comprises a detachable driver (5), an external fixed support platform (6), a load-bearing adjustment top platform (7), a steel hoop top plate (8) and a central pusher (9). Two detachable drivers (5) are respectively plugged and fixed on both sides of the external fixed support platform (6). The two ends of the external fixed support platform (6) are respectively connected to two load-bearing adjustment top platforms (7) for supporting the end forces through threaded matching. The two ends of the steel hoop top plate (8) are respectively hinged to the two load-bearing adjustment top platforms (7) at the end through short shafts. The two steel hoop top plates (8) are symmetrically arranged on both sides of the web (3) support. The detachable driver (5) drives the central pusher (9) by plugging. The central pusher (9) is threadedly connected to the external fixed support platform (6). The central pusher (9) pushes the middle end of the steel hoop top plate (8) to fit tightly on the web (3). The load-bearing adjustment top platform (7) adjusts the two ends of the steel hoop top plate (8) to fit tightly on the web (3).

4. The double-sided prestressed truss reinforcement structure for the web of a concrete box beam according to claim 3, characterized in that: The external fixed support platform (6) includes an external locking frame (16), which is assembled and connected by a supporting threaded anchor rod (17) inside the external locking frame (16); a card slot and a fixing nut are provided on the threaded anchor rod (17) for locking the supporting external locking frame (16); the supporting threaded anchor rod (17) is plugged and fixed in the anchor hole (33); the outer walls on both sides of the external locking frame (16) are provided with a disassembly slot (18) for plugging in the detachable driver (5), the centers of both sides of the external locking frame (16) are provided with a central threaded cylinder (19), and the two ends of the external locking frame (16) are symmetrically provided with end tightening threaded holes (20); and the two sides of the external locking frame (16) are symmetrically provided with a limiting slide groove (21).

5. The double-sided prestressed truss reinforcement structure for the web of a concrete box beam according to claim 4, characterized in that: The detachable driver (5) includes a disassembly bracket (10), an inner wall of the disassembly bracket (10) is provided with an inserting platform (11), a locking screw (12) is inserted into the inserting platform (11), and the locking screw (12) is connected to the disassembly slot (18) of the outer locking frame (16) through threaded matching. An automatic propulsion driver (13) is fixed to one end of the disassembly bracket (10), and the automatic propulsion driver (13) is connected to the internal threaded external gear cylinder (14) through a synchronous belt transmission. The internal threaded external gear cylinder (14) is rotatably connected to the other end of the disassembly bracket (10), and the interior of the internal threaded external gear cylinder (14) is connected to the spline screw shaft (15) through threaded matching; the spline screw shaft (15) is connected to the disassembly bracket (10) through threaded matching.

6. The double-sided prestressed truss reinforcement structure for concrete box beam webs according to claim 4, characterized in that: The load-bearing adjustment top platform (7) includes an end tightening screw (22), which is connected to the end tightening threaded hole (20) through threaded matching, and the end tightening screw (22) is rotatably connected to the end pushing platform (23). The side end of the end pushing platform (23) is connected to the end fine-tuning screw (24) through threaded matching, and the end fine-tuning screw (24) is rotatably connected to the end hinged slide (26). The end hinged slide (26) is limited and slides in the limit groove platform (25), and the limit groove platform (25) is fixed in the end pushing platform (23); the end hinged slide (26) is hinged to the steel hoop top plate (8) through a short axis; the end fine-tuning screw (24) slides in the limit slide groove (21).

7. The double-sided prestressed truss reinforcement structure for concrete box beam webs according to claim 4, characterized in that: The central ejector (9) comprises a spline groove screw (28) and a central ejection frame (29), wherein a spline groove is provided in the spline groove screw (28) for inserting the spline screw shaft (15); the outer wall of the spline groove screw (28) is connected to the central threaded barrel (19) through threaded fitting, and the spline groove screw (28) is rotatably connected to the center of the central ejection frame (29), and the central ejection frame (29) is wrapped and buckled at both ends of the center of the two steel hoop top plates (8).

8. The double-sided prestressed truss reinforcement structure for concrete box beam webs according to claim 3, characterized in that: The steel hoop top plate (8) comprises two hinged steel rods, a plurality of steel hoop plates (27) are fixed between the two hinged steel rods, and the steel hoop plates (27) are fitted on the web (3).

9. The double-sided prestressed truss reinforcement structure for the web of a concrete box beam according to claim 8, characterized in that: The centers of the hinged steel rods are connected by short axis hinges; A plurality of articulated steel rods are hingedly connected in the articulated steel rod via short shafts.

10. The double-sided prestressed truss reinforcement structure for concrete box beam webs according to claim 8, characterized in that: The steel hoop plate (27) includes a steel hoop frame (30), a top plate (31) and a plurality of spring shafts (32). The steel hoop frame (30) is fixed between two hinged steel rods. A plurality of spring shafts (32) are slidably arranged in the steel hoop frame (30). The plurality of spring shafts (32) are all fixed on the top plate (31). A spring is sleeved on the spring shaft (32) and is arranged between the steel hoop frame (30) and the top plate (31).

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