A T-beam / small box girder reinforcement cage with transverse diaphragm cover plate integral formwork insertion and removal structure

Abstract

This utility model provides a structure for the integral placement and removal of a T-beam / small box girder reinforcement cage with a transverse diaphragm cover plate. It includes a transverse diaphragm template on a hydraulic side template and a detachable transverse cover plate mechanism and locking mechanism located at the ends of the transverse diaphragm template. An angle steel frame is provided at the ends of the transverse diaphragm template, with limiting steel plates on the inner walls of the angle steel frame. The transverse cover plate mechanism is positioned within the left and right limiting steel plates, and several tie rods on it are detachably locked to the corresponding locking mechanisms located on the outer sides of the two limiting steel plates. This utility model, through the limiting cooperation between the detachable transverse cover plate mechanism and the transverse diaphragm template, combined with a double-sided adhesive sealing structure and a layered locking device, achieves precise positioning and overall hoisting of the reinforcement cage and template. It effectively solves the technical problems of difficult rebar insertion and severe grout leakage in traditional processes, and has significant advantages in improving construction efficiency and ensuring molding quality.

Description

Technical Field

[0001] This utility model belongs to the field of bridge construction technology, and relates to a T-beam demolding device, and more particularly to a T-beam / small box girder steel cage with transverse diaphragm cover plate integral mold insertion and demolding structure. Background Technology

[0002] In the construction of precast T-beams in a smart beam yard for highway bridges, the reinforcing cage for the bottom web of the T-beam needs to be placed on the bottom formwork trolley before the overall hydraulic side formwork is closed. Traditional construction methods have significant drawbacks: when the hydraulic side formwork is closed, it is difficult to accurately align and thread the transverse diaphragm reinforcing bars with the pre-drilled holes in the transverse diaphragm cover plates, necessitating the use of a post-installation method for these reinforcing bars. This method is not only time-consuming and labor-intensive, severely impacting the construction progress, but also makes it difficult to guarantee the quality of the construction. Furthermore, during the overall demolding of the hydraulic side formwork, workers need to remove the transverse diaphragm cover plates in advance, a step that also reduces construction efficiency.

[0003] In existing technologies, the diaphragm cover plates and side formwork are typically fixedly connected, making it impossible to achieve synchronous binding and overall hoisting with the reinforcing cage. This severely restricts the construction efficiency and quality control of precast T-beams. More significantly, the sealing performance of the diaphragm cover plates and side formwork in traditional processes is insufficient, easily leading to grout leakage during concrete pouring and affecting the quality of the formed components. These technical defects are particularly evident in large-scale bridge projects and have become key bottlenecks restricting the advancement of precast T-beam construction technology. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a T-beam / small box girder reinforcement cage with transverse diaphragm cover plate integral formwork insertion and removal structure in view of the above-mentioned defects in the prior art. It has the advantages of improving the positioning accuracy of transverse diaphragm reinforcement, realizing the overall hoisting operation, enhancing the sealing of the formwork, and improving the construction efficiency.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution:

[0006] A T-beam / small box girder reinforcement cage with transverse diaphragm cover plate integral formwork insertion and removal structure, comprising a transverse diaphragm template on a hydraulic side template and a transverse formwork cover plate mechanism and a locking mechanism detachably disposed at the end of the transverse diaphragm template, wherein:

[0007] An angle steel frame is provided at the end of the transverse partition template, and a limiting steel plate is provided on the inner side wall of the angle steel frame respectively; the transverse mold cover plate mechanism is limited and provided on the inner side of the left and right limiting steel plates, and several tie rods on it are detachably locked and connected to the locking mechanism located on the outer side of the two limiting steel plates respectively.

[0008] Preferably, the two angle steel frames on the left and right sides at the same end are arranged symmetrically and inclined, with their openings facing upward to form an inverted conical beam rib casting cavity, which together with the flange casting cavity formed at the top of the hydraulic side template forms a T-shaped casting model.

[0009] Preferably, the outer side wall of the limiting steel plate is provided with a plurality of stiffening plates at intervals from top to bottom, and the stiffening plates are welded to the angle steel frame and the limiting steel plate through their chamfered edges.

[0010] Preferably, the inner wall of the limiting steel plate is staggered with the inner wall of the angle steel frame, and there is a height difference of at least 10 mm between the two planes.

[0011] Preferably, the transverse mold cover plate mechanism includes a transverse partition cover plate, several sets of partition limiting plates, and the tie rod, wherein:

[0012] The diaphragm cover is an inverted conical plate structure, the shape and size of which match the cross-section of the end of the T-shaped casting model;

[0013] Several of the aforementioned partition limiting plates are I-shaped structures, respectively arranged vertically at intervals in the middle of the outer side wall of the transverse partition cover; and

[0014] The inner ends of several of the tie rods are vertically disposed at the middle position of the outer side wall of the diaphragm cover plate, and are correspondingly disposed at the top or bottom position near the diaphragm limiting plate.

[0015] Preferably, the left and right sides of the diaphragm cover plate are provided with a row of spaced through holes for passing through the diaphragm reinforcement bars, and a number of diaphragm limiting plates and tie rods are provided between the left and right rows of through holes.

[0016] Preferably, the dimensions of the partition limiting plates gradually decrease from top to bottom, and are respectively embedded between the left and right angle steel frames that gradually decrease in size.

[0017] More preferably, the transverse mold cover plate mechanism further includes double-sided adhesive tape that is respectively pasted on the left and right ends of the outer side wall of the transverse partition cover plate, and the two double-sided adhesive tapes are respectively pasted and connected to the inner side walls of the two limiting steel plates to form a sealing structure.

[0018] Preferably, the partition limiting plate and the tie rod are arranged in 3-5 groups at equal intervals; and the stiffening plates on the outer side walls of the limiting steel plates on both sides are arranged in 6-10 groups at equal intervals.

[0019] Preferably, the locking mechanism consists of an anchoring plate and an anchor nut, wherein:

[0020] The anchoring plate is a rectangular plate structure, which can be detachably sleeved on the tie rod through a through hole in its middle, and its left and right ends are respectively set on the outer end frames of the left and right angle steel frames.

[0021] The anchor nut is threaded onto the tie rod via a nut washer, thereby pressing and fixing the inner diaphragm cover plate and the outer anchoring pad plate onto the left and right angle steel frames via the tie rod.

[0022] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0023] The T-beam / small box girder reinforcement cage with transverse diaphragm cover plate integral placement and detachment formwork structure provided by this utility model, through the limiting cooperation between the detachable transverse formwork cover plate mechanism and the transverse diaphragm template, combined with the double-sided adhesive sealing structure and layered locking device, realizes the precise positioning and overall hoisting of the reinforcement cage and template, effectively solving the technical problems of difficult transverse diaphragm reinforcement insertion and serious grout leakage in traditional processes, and has significant advantages in improving construction efficiency and ensuring molding quality. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the T-beam / small box girder reinforcement cage with transverse diaphragm cover plate integral molding and demolding structure, which is installed together with the reinforcement cage in the mold according to this utility model.

[0025] Figure 2 This utility model Figure 2 The diagram shows a partially enlarged structural schematic of part A in a T-beam / small box girder reinforcement cage with transverse diaphragm cover plate integral formwork insertion and removal structure.

[0026] Figure 3 This is a schematic diagram of the transverse cross-section of the T-beam / small box girder reinforcement cage with transverse diaphragm cover plate integral mold insertion and demolding structure of the present invention, which is installed together with the reinforcement cage.

[0027] Figure 4 This utility model Figure 3 The diagram shows a partially enlarged structural schematic of part B in a T-beam / small box girder reinforcement cage with transverse diaphragm cover plate integral formwork insertion and removal structure.

[0028] Figure 5 This is a schematic diagram of the main structure of the inner angle steel frame, limiting steel plate and stiffening plate of the diaphragm template in the integral molding and demolding structure of the reinforcing cage with diaphragm cover plate of the T-beam / small box girder according to the present invention.

[0029] Figure 6 This utility model Figure 5 The diagram shows the assembly structure of the angle steel frame, limiting steel plate and stiffening plate in a T-beam / small box girder reinforcement cage with transverse diaphragm cover plate integral formwork insertion and removal structure.

[0030] Figure 7 This is a front view schematic diagram of the transverse formwork cover plate mechanism in the integral mold insertion and demolding structure of a T-beam / small box girder steel cage with transverse diaphragm cover plate according to the present invention.

[0031] Figure 8 This utility model Figure 7 The diagram shows a top view of the transverse formwork cover plate mechanism in a T-beam / small box girder reinforcement cage with transverse diaphragm cover plate integral formwork insertion and removal structure.

[0032] The accompanying figures are labeled as follows:

[0033] 100 - Horizontal diaphragm formwork, 110 - Angle steel frame, 120 - Limiting steel plate, 130 - Reinforcing plate;

[0034] 200-Horizontal mold cover plate mechanism, 210-Horizontal partition cover plate, 211-Perforation, 220-Partition limit plate, 230-Tie rod, 240-Double-sided adhesive;

[0035] 300 - Locking mechanism, 310 - Anchoring pad, 320 - Anchor nut, 330 - Nut washer;

[0036] 400 - diaphragm reinforcement. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0038] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0039] In existing technologies, the difficulty in aligning the transverse diaphragm reinforcement with the pre-drilled holes in the cover plate during the construction of precast T-beams for highway bridges has been a long-standing problem. When using traditional hydraulic side formwork for overall mold closing, the transverse diaphragm reinforcement needs to be inserted a second time after the formwork is closed, a cumbersome operation prone to deviations. The transverse diaphragm cover plate needs to be removed in advance during the demolding stage, causing interruptions in the process and affecting construction continuity. This step-by-step operation not only increases labor costs but also easily leads to reinforcement positioning errors, affecting the structural acceptance rate.

[0040] To address the aforementioned problems, the inventors discovered that the core contradiction of traditional processes lies in the way the cover plate and formwork are fixed, which restricts the overall operation of the reinforcing cage. By analyzing the processes of reinforcing cage binding, hoisting, and formwork assembly, they proposed pre-assembling and fixing the diaphragm cover plate to the reinforcing cage, making them a movable unit. Further research revealed that using a split cover plate structure with detachable tie rods allows for rapid positioning during formwork assembly and enables control over the separation of the cover plate and formwork by adjusting the tension of the tie rods. This design breaks through the conventional mindset that the formwork and cover plate must be rigidly connected.

[0041] Therefore, as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this application proposes a structural scheme including a diaphragm template 100 on a hydraulic side template, a diaphragm template 100, and a transverse mold cover plate mechanism 200 and a locking mechanism 300 detachably disposed at the ends of the diaphragm template 100. The diaphragm template 100 has positioning structures with angle steel frames 110 and limiting steel plates 120 at both ends. The transverse mold cover plate mechanism 200 is positioned by constraint on the inner side of the limiting steel plates 120, and the tie rod 230 is detachably connected to the locking mechanism 300.

[0042] The hydraulic side formwork refers to a forming formwork that opens and closes via hydraulic drive. Specifically, it can be a combination of steel plates and hydraulic cylinders, used to form the casting space for the T-beam sidewalls. The diaphragm formwork 100 is a protruding part of the hydraulic side formwork end. The angle steel frame 110 is an L-shaped steel component welded to the end of the diaphragm formwork 100, specifically made of unequal-sided angle steel, used to provide an installation reference surface for the transverse formwork cover plate. The limiting steel plate 120 is a vertical steel plate fixed inside the angle steel frame 110, specifically made of steel plates thicker than 8 mm, specifically a 40 mm × 12 mm steel plate vertically welded to the angle steel frame 110, used to constrain the lateral displacement of the transverse formwork cover plate mechanism 200.

[0043] The transverse mold cover plate mechanism 200 refers to the combined component covering the transverse diaphragm area. Specifically, it can be a combination structure of an inverted conical steel plate and an I-shaped limiting plate, used to form the transverse diaphragm casting cavity. The locking mechanism 300 refers to the fastening device connecting the tie rod 230. Specifically, it can be a combination structure of an anchoring pad 310 and a nut, used to achieve rapid fixing and separation of the cover plate and the template.

[0044] Specifically, after the diaphragm template 100 is closed, the symmetrically arranged angle steel frames 110 at its ends form an inverted conical positioning structure. The transverse formwork cover plate mechanism 200 achieves precise positioning through the inner constraints of the limiting steel plates 120 on both sides, ensuring that the reserved holes of the cover plate are automatically aligned with the transverse diaphragm reinforcing bars 400 of the reinforcing cage. After the tie rod 230 passes through the outer side of the limiting steel plate 120, it generates axial tension through the tightening of the anchoring plate 310 and the nut, making the cover plate and the template form a rigid connection. During demolding, after the nut is loosened, the diaphragm template 100 moves outward, and the transverse formwork cover plate mechanism 200 automatically disengages from the constraint of the limiting steel plate 120 under the action of the weight of the reinforcing cage, achieving synchronous demolding. The staggered design of the angle steel frame 110 and the limiting steel plate 120 forms a double positioning, effectively preventing structural displacement during the pouring process.

[0045] Compared to existing technologies, traditional processes require inserting the transverse diaphragm reinforcement bars 400mm after formwork assembly. This solution achieves simultaneous reinforcement bar positioning through pre-installed transverse diaphragm cover plates 210, eliminating the need for secondary reinforcement bar insertion. Existing technologies require manual removal of the cover plate fixing bolts before demolding; this solution uses tie rods 230 to control the separation of the transverse diaphragm cover plates 210, reducing the operation steps by two-thirds. Traditionally, the cover plates are welded to the formwork; this solution's split structure allows the cover plates to be reused in different beam segments.

[0046] Through the above technical solution, this application achieves one-time precise alignment of the 400mm transverse diaphragm reinforcement with the pre-reserved holes in the cover plate, eliminating the risk of rework due to subsequent reinforcement insertion. The detachable connection between the cover plate and the formwork allows the demolding action and cover plate separation to be completed simultaneously, reducing the single operation time by approximately 40%. The dual constraint design of the positioning structure controls the cover plate displacement error to within 2mm, significantly improving the forming quality of the structural T-beam.

[0047] In some of these embodiments, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, this application further proposes that the left and right corner steel frames 110 at the same end are arranged symmetrically and inclined, with their openings facing upward to form an inverted cone-shaped beam rib casting cavity, which together with the flange casting cavity formed at the top of the transverse diaphragm template 100 forms a T-shaped casting model.

[0048] The inclined arrangement of the angle steel frame 110 refers to the two angle steel frames tilting outwards at a symmetrical angle, specifically between 15° and 60°. The inverted conical beam rib casting cavity refers to the upper-wide, lower-narrow cavity structure formed by the inclined angle steel frames, which can be achieved by adjusting the inclination angle and spacing of the angle steel frames 110. This structure provides a precise positioning reference for the transverse diaphragm reinforcement 400. The flange casting cavity refers to the planar casting area formed by the horizontal extension of the top of the hydraulic side formwork, which can be achieved by setting a horizontal support structure at the top of the formwork. This area, together with the inverted conical beam rib casting cavity, constitutes a complete T-shaped section forming space.

[0049] Specifically, during the hydraulic side formwork closing process, the symmetrically inclined angle steel frames 110 form an inverted conical cavity. The upper opening of this cavity is larger than the lower opening, allowing the diaphragm cover plate 210 to naturally embed into the limiting area of ​​the left and right angle steel frames 110 during hoisting and lowering. The inverted conical structure forms a tapering guide in the vertical direction, guiding the diaphragm reinforcement 400 along a predetermined path into the pre-reserved holes in the cover plate. When the flange casting cavity and the beam rib casting cavity are combined, a complete T-shaped casting model is formed, ensuring that the concrete maintains the designed cross-sectional shape during solidification.

[0050] In some of these embodiments, such as Figure 4 , Figure 5 and Figure 6 As shown, this application further proposes to provide multiple stiffening plates 130 at intervals from top to bottom on the outer side wall of the limiting steel plate 120. The stiffening plates 130 are welded to the angle steel frame 110 and the limiting steel plate 120 through chamfered edges.

[0051] The stiffening plate 130 refers to a plate-shaped support structure arranged perpendicular to the outer wall of the limiting steel plate 120. Specifically, it can be made of 40 mm × 40 mm steel plate with a thickness of 8-12 mm, cut and formed to disperse the lateral pressure generated when the hydraulic side template is closed. The chamfered edge refers to the inclined transition surface processed at the contact edge between the stiffening plate 130 and the angle steel frame 110 and the limiting steel plate 120. Specifically, it can be an 8 mm × 8 mm rounded chamfer to reduce stress concentration in the welding area and increase the welding contact area.

[0052] Specifically, several stiffening plates 130 are equidistantly distributed along the height direction of the limiting steel plate 120, and their number can be adjusted according to the template length. Each stiffening plate 130 is double-sided welded to the vertical edge of the angle steel frame 110 and the outer surface of the limiting steel plate 120 through a chamfered edge, and the chamfered structure makes the weld seam smooth transition. During the welding process, the chamfered area serves as a filling space for molten metal, forming a triangular cross-section weld seam, thereby constructing a stable triangular support system. When the structure is subjected to lateral loads, the stiffening plates 130 convert the concentrated load into a distributed load and transfer it to the angle steel frame 110, while the chamfered weld seam avoids the stress peak at the right angle weld.

[0053] In some of its embodiments, such as Figure 4 and Figure 6 As shown, this application further proposes that the inner wall of the limiting steel plate 120 and the inner wall of the angle steel frame 110 are staggered, with a height difference of at least 10 mm between the two planes. The staggered arrangement means that the inner wall of the limiting steel plate 120 forms a stepped structure relative to the inner wall of the angle steel frame 110, creating a height difference at their contact surfaces. The height difference refers to the vertical distance between the two planes, and can be, for example, more than 10 mm, specifically achieved by adjusting the welding position of the limiting steel plate 120 and the angle steel frame 110.

[0054] Specifically, after the inner wall of the limiting steel plate 120 and the inner wall of the angle steel frame 110 form a misaligned plane, the transverse formwork cover plate mechanism 200 first contacts the inner wall of the angle steel frame 110 as a transverse reference during installation, and then forms a longitudinal limiting boundary through the inner wall of the limiting steel plate 120. The stepped structure produces a progressive clamping effect during the locking process of the tie rod 230, gradually eliminating the gap between the contact surfaces. During the pouring process, the concrete pressure is evenly transmitted to the connection area between the angle steel frame 110 and the limiting steel plate 120 through the stepped contact surface, avoiding sealing failure caused by single-plane pressure.

[0055] Compared to existing technologies, traditional diaphragm cover plates and templates are bonded together in a planar manner, which can easily lead to gaps due to processing errors, resulting in the risk of grout leakage. This solution uses a stepped, staggered structure, which can compensate for local processing deviations by creating an effective sealing surface, while also distributing pressure loads.

[0056] Through the above technical solution, this application effectively solves the problem of insufficient sealing caused by misalignment between the diaphragm cover plate 210 and the diaphragm template during installation, thus avoiding grout leakage or structural displacement during the pouring process. The stepped misalignment structure improves assembly accuracy through dual positioning constraints, and the progressive clamping effect enhances the sealing of the contact surface, thereby ensuring the forming quality of the T-beam and reducing rework.

[0057] In some of these embodiments, such as Figure 2 , Figure 4 , Figure 7 and Figure 8 As shown, this application further proposes a transverse mold cover plate mechanism 200 including a transverse diaphragm cover plate 210, several sets of diaphragm limiting plates 220, and tie rods 230. The transverse diaphragm cover plate 210 is an inverted conical plate structure, the shape and size of which match the cross-section of the end of the T-shaped casting mold; the several diaphragm limiting plates 220 are all I-shaped structures, respectively arranged at intervals at the middle position of the outer side wall of the transverse diaphragm cover plate 210; the inner ends of the several tie rods 230 are vertically welded to the middle position of the outer side wall of the transverse diaphragm cover plate 210, and are correspondingly arranged near the top or bottom position of the diaphragm limiting plates 220.

[0058] The diaphragm cover plate 210 is an inverted conical plate that matches the cross-section of the end of the T-shaped casting model. It can be formed by stamping steel plates, and its taper matches the contour of the casting cavity formed by the side template. It is used to create a closed diaphragm forming space when the mold is closed. The diaphragm limiting plate 220 is a supporting member with an I-shaped cross-section. It can be made of three steel plates welded and fixed to the outside of the cover plate. The flanges of the I-shaped cross-section form an interlocking contact surface with the angle steel frame 110 of the side template, used to limit the lateral displacement of the diaphragm cover plate 210. The tie rod 230 is a threaded fastening rod, specifically made of high-strength steel. Its inner end is welded to the middle of the outer wall of the diaphragm cover plate 210, and its outer end extends to the outside of the side template. It cooperates with the locking mechanism 300 to achieve the pressing and fixing of the diaphragm cover plate 210 and the side template.

[0059] Specifically, the inverted conical diaphragm cover plate 210 is pre-fixed to the diaphragm reinforcement 400 during the reinforcement cage binding stage, and its perforations allow the reinforcement to be pre-inserted. The I-shaped diaphragm limiting plate 220 is embedded between the two side angle steel frames 110 during formwork closing, forming multiple lateral constraint points through vertical spacing to prevent the cover plate from shifting during pouring. Tie rods 230 are positioned adjacent to the diaphragm limiting plate 220. When the locking mechanism 300 applies axial tension, the diaphragm cover plate 210 forms a surface contact and compression state with the side formwork on both sides, ensuring the sealing of the pouring cavity. After releasing the tie rods 230 during the demolding stage, the diaphragm cover plate 210 can be detached from the side formwork along with the reinforcement cage without separate disassembly.

[0060] Compared with existing technologies, traditional methods require the separate installation of transverse diaphragm reinforcement bars 400 after the formwork is closed, and the cover plate must be removed before demolding. In contrast, this solution forms an integral structure with the pre-installed cover plate and the reinforcement cage, so that the transverse diaphragm reinforcement bars 400 are positioned during the binding stage. When the formwork is closed, the cover plate is directly fitted with the side formwork, and when the formwork is demolded, the cover plate is removed synchronously with the reinforcement bars, eliminating the need for secondary reinforcement installation and separate cover plate removal.

[0061] Through the above technical solution, this application achieves simultaneous binding and overall hoisting of the diaphragm cover plate 210 and the reinforcing cage, avoiding the process interruption caused by the later insertion of the diaphragm reinforcing bars 400 in traditional construction, and solving the problem of low demolding efficiency caused by the need to remove the cover plate in advance. The interlocking connection between the diaphragm cover plate 210 and the side formwork ensures the accuracy of the casting, and the quick locking mechanism of the tie rod 230 simplifies the operation process, effectively improving the acceptance rate of the diaphragm construction process.

[0062] In some of these embodiments, such as Figure 1 and Figure 7 As shown, this application further proposes to open a row of spaced through holes 211 along the end edges on both sides of the diaphragm cover plate 210, and to set several sets of diaphragm limiting plates 220 and tie rods 230 between the two rows of through holes 211. The through holes 211 refer to through channels opened on both sides of the diaphragm cover plate 210, which can be implemented using circular holes with a diameter slightly larger than the diaphragm reinforcement 400 mm. For example, the hole diameter can be 2-3 mm larger than the reinforcement diameter, for direct insertion of the diaphragm reinforcement during the binding stage.

[0063] Specifically, during the reinforcement cage binding process, the transverse diaphragm reinforcement 400 can be pre-inserted into the perforations on both sides of the transverse diaphragm cover plate 210 to achieve synchronous positioning of the reinforcement and the cover plate. After the transverse diaphragm cover plate 210 is hoisted onto the bottom formwork trolley, the I-shaped structure of the diaphragm limiting plate 220 is embedded into the inverted conical cavity formed by the angle steel frames 110 on both sides, restricting the lateral displacement of the cover plate. After the tie rod 230 passes through the gap of the reinforcing plate 130 on the outside of the limiting steel plate 120, longitudinal clamping force is applied through the anchoring pad 310 and the nut, so that the transverse diaphragm cover plate 210 fits tightly with the side formwork. The symmetrical arrangement of the perforations 211 ensures both the space for reinforcement insertion and the uniform stress on the transverse diaphragm cover plate 210, avoiding misalignment and grout leakage caused by unilateral stress during pouring.

[0064] In some of these embodiments, such as Figure 1 and 7 As shown, this application further proposes that the size of the partition limiting plate 220 gradually decreases from top to bottom, correspondingly embedded between the indirectly gradually decreasing left and right angle steel frames 110. The gradual decrease in size of the partition limiting plate 220 refers to the gradient decrease in its vertical cross-sectional dimensions, which can be achieved using a trapezoidal or conical structure, forming a complementary fitting relationship with the conical inner cavity of the angle steel frame 110. The indirectly gradually decreasing angle steel frame 110 refers to the inverted conical space formed by the inner sidewalls of the two angle steel frames, which can be achieved by inclined welding of angle steel components to form a gradually tapering structure, the taper of which matches the size gradient of the partition limiting plate 220.

[0065] Specifically, the partition limiting plate 220 has a progressively smaller dimension in each layer in the vertical direction, forming a stepped interlocking surface. When the transverse formwork cover plate mechanism 200 is installed, the partition limiting plate 220 is embedded step by step into the inverted conical space formed by the left and right angle steel frames 110 from top to bottom, with the edge of each partition limiting plate 220 making surface contact with the inner wall of the corresponding angle steel frame 110. This dimensional gradient allows the transverse diaphragm cover plate 210 to automatically correct positional deviations during the mold closing process, eliminating assembly gaps through step-by-step constraints. During the pouring process, the continuous contact surfaces of the partition limiting plate 220 and the angle steel frame 110 form multiple physical seals, preventing concrete slurry from seeping in the vertical direction. During demolding, due to the reverse distribution of the dimensional gradient, as the transverse diaphragm cover plate 210 moves outward with the transverse diaphragm template 100, the partition limiting plate 220 and the angle steel frame 110 exhibit a self-guiding separation effect, avoiding the disassembly resistance caused by traditional rigid clamping.

[0066] In some of these embodiments, such as Figure 3 and Figure 4 As shown, this application further proposes that the transverse mold cover plate mechanism 200 also includes double-sided adhesive tape 240 respectively pasted on the left and right ends of the outer side wall of the transverse partition cover plate 210. The two double-sided adhesive tapes 240 are respectively pasted and connected to the inner side walls of the left and right limiting steel plates 120 to form a sealing structure and prevent grout leakage by anchoring.

[0067] The double-sided adhesive 240 refers to a conventionally known strip material with two adhesive sides. Specifically, it can be made of high-density polyethylene substrate combined with a pressure-sensitive adhesive layer. Its adhesive sides are designed to directly contact the end edge of the transverse partition cover 210 and the inner wall of the limiting steel plate 120, achieving initial sealing at the joint through adhesive force. The sealing structure refers to the continuous closed interface formed by the double-sided adhesive and the inner wall of the limiting steel plate. Specifically, this is achieved by the width of the double-sided adhesive covering the joint area. This structure is further compacted under the pressure of the tie rod 230, eliminating gaps.

[0068] Specifically, double-sided adhesive 240 is pre-attached to the outer walls of the left and right ends of the transverse diaphragm cover plate 210. When the transverse mold cover plate mechanism 200 is installed between the two limiting steel plates 120, the double-sided adhesive 240 contacts and adheres to the inner walls of the limiting steel plates 120, forming a continuous sealing interface. The tightening force of the tie rod 230 presses the contact surfaces between the left and right ends of the transverse diaphragm cover plate 210 and the corresponding limiting steel plates 120 tightly. Under pressure, the double-sided adhesive 240 fully fills the micro-uneven areas, preventing concrete grout from seeping out from the joints. This sealing method eliminates the need for additional caulking material, avoiding the mixing, application, and curing time required in traditional processes.

[0069] Compared to existing technologies, traditional diaphragm cover sealing requires filling the joints with epoxy resin or rubber strips. This necessitates precise control of the sealant amount and waiting for the material to cure before pouring, thus extending the construction period. This solution, however, combines the instant bonding properties of double-sided adhesive 240 with the mechanical clamping of tie rod 230, completing the sealing process simultaneously with the installation of the diaphragm cover mechanism 200, eliminating the need for the grouting step and the waiting time.

[0070] Through the above technical solution, this application achieves rapid sealing at the joint between the diaphragm cover plate 210 and the side formwork, effectively preventing grout leakage during concrete pouring, while simplifying the installation steps and avoiding the impact of traditional grouting processes on construction efficiency.

[0071] As some of these embodiments, such as Figure 1 , Figure 5 and Figure 7 As shown, this application further proposes that the partition limiting plate 220 and the tie rod 230 are arranged in 3-5 groups, with equal vertical spacing; and the stiffening plates 130 on the outer walls of the limiting steel plates 120 on both sides are arranged in 6-10 groups, with equal vertical spacing. Preferably, the partition limiting plate 220 and the tie rod 230 are arranged in 4 groups, with equal vertical spacing; and the stiffening plates 130 on the outer walls of the limiting steel plates 120 on both sides are arranged in 8 groups, with equal vertical spacing.

[0072] Specifically, when the partition limiting plates 220 and tie rods 230 are arranged at equal intervals in 3-5 groups, for example, 4 groups can be evenly distributed in the height direction of the cover plate. Each group of partition limiting plates 220 simultaneously constrains the vertical displacement of the cover plate through the I-shaped cross section, while the corresponding tie rods 230 apply axial preload through nuts, forming a multi-point balanced clamping effect. This arrangement ensures that the cover plate is subjected to uniform force at each contact point when the mold is closed, avoiding sealing failure caused by local stress concentration. 6-10 sets of reinforcing plates 130 are respectively provided on the two side limiting steel plates 120, for example, 8 sets can be equidistantly welded to the outside of the limiting steel plates 120, effectively suppressing the deflection deformation of the limiting steel plates 120, thereby maintaining the fitting accuracy between the transverse mold cover plate mechanism 200 and the side template.

[0073] Through the above technical solutions, this application achieves rapid positioning and reliable fixing of the diaphragm cover plate 210 and the side formwork. During the formwork closing stage, the equidistantly distributed clamping points eliminate the risk of grout leakage caused by local deformation. During the demolding stage, the overall locking mechanism 300 achieves synchronous separation of the cover plate and the reinforcing cage. The dense arrangement of the stiffening plates 130 enhances the deformation resistance of the side formwork, ensuring that the formwork maintains a precise fit with the diaphragm cover plate 210 even after multiple uses, thus solving the problem of repeated disassembly and assembly caused by formwork deformation in traditional structures.

[0074] In some of these embodiments, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this application further proposes a locking mechanism 300 consisting of an anchoring plate 310 and an anchor nut 320. The anchoring plate 310 is a rectangular plate structure with a through hole in the middle for detachable mounting on the tie rod 230. The left and right ends are correspondingly mounted on the outer end frame of the angle steel frame 110. The anchor nut 320 is threaded onto the tie rod 230 through a nut washer 330. The tie rod 230 presses and fixes the inner diaphragm cover plate 210 and the outer anchoring plate 310 onto the left and right angle steel frames 110.

[0075] The anchoring plate 310 is a rectangular plate structure, specifically cut from Q235 steel plate with a thickness of 8-12 mm. Its through-hole diameter forms a clearance fit with the outer diameter of the tie rod 230, distributing the axial pressure transmitted by the tie rod to the outer end frame of the angle steel frame and preventing localized stress concentration. The anchor nut 320 is a standard hexagonal nut with external threads, specifically an M20-M24 carbon steel nut. The threaded engagement applies axial preload to the tie rod 230, creating a rigid connection between the diaphragm cover plate 210 and the angle steel frame 110. The nut washer 330 is an annular metal sheet with an inner hole, specifically a flat washer with an outer diameter of 40-50 mm. Its inner hole diameter is slightly larger than the outer diameter of the tie rod 230, increasing the contact area between the anchor nut 320 and the anchoring plate 310 and preventing surface crushing during thread engagement.

[0076] Specifically, after the tie rod 230 passes through the middle of the anchoring plate 310, the anchoring plate 310 is fitted onto the outside of the tie rod 230 through the through hole, with its left and right ends contacting the outer end frame of the angle steel frame 110. The anchor nut 320 is screwed into the end of the tie rod 230, and the nut washer 330 is pressed between the anchor nut 320 and the anchoring plate 310. When the nut is tightened, the tie rod 230 generates axial tension, pressing the diaphragm cover plate 210 inward, while the anchoring plate 310 presses the angle steel frame 110 outward, forming a two-way clamping effect. The nut washer 330 increases the contact area, reduces the contact stress at the threaded connection, and prevents the threads from loosening due to vibration. When disassembly is required, simply loosen the anchor nut 320 in the opposite direction to release the axial tension on the tie rod 230, and the anchoring plate 310 can be separated from the tie rod 230.

[0077] Combination Figures 1 to 8As shown, the working principle of the T-beam / small box girder reinforcement cage with transverse diaphragm cover plate integral formwork insertion and removal structure of this application is as follows: When binding the reinforcement cage, it is fixed at the position of the transverse diaphragm reinforcement, and the transverse diaphragm reinforcement 400 is bound simultaneously. After binding, the reinforcement cage and the transverse formwork cover plate mechanism 200 are hoisted as a whole and placed on the bottom formwork trolley, and the transverse diaphragm template 100 is closed as a whole, so that the position of the transverse diaphragm of the side formwork can fit with the transverse diaphragm cover plate 210. Subsequently, the locking mechanism 300 tightens the back tie rod 230 to fix the movable transverse diaphragm cover plate 210 to the side formwork to ensure that the formwork is closed tightly. Before demolding, the locking mechanism 300 is used to loosen the back tie rod 230 to ensure that the transverse diaphragm cover plate 210 is loosened from the side formwork. During demolding, the transverse diaphragm reinforcement 400 can bring the cover plate down simultaneously, and it can be removed and recycled for the next reinforcement cage.

[0078] The T-beam / small box girder reinforcement cage with transverse diaphragm cover plate integral formwork insertion and removal structure provided in this application is used separately from the side formwork by means of an embedded transverse formwork cover plate mechanism 200, and is connected and fixed to the side formwork by a back tie rod 230. It can be integrally tied to the reinforcement cage, hoisted as a whole, closed as a whole, and removed as a whole. It is simple and quick to use, does not require frequent disassembly and assembly of bolts, and greatly improves the speed of formwork removal and removal.

[0079] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0080] Secondly, the accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0081] Finally, the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A T-beam / small box girder reinforcement cage with transverse diaphragm cover plate integral formwork insertion and removal structure, characterized in that, Includes a diaphragm template (100) on the hydraulic side template and a transverse mold cover plate mechanism (200) and a locking mechanism (300) detachably disposed at the end of the diaphragm template (100), wherein: An angle steel frame (110) is provided at the end of the transverse partition template (100), and a limiting steel plate (120) is provided on the inner side wall of the angle steel frame (110); the transverse mold cover plate mechanism (200) is limited and provided on the inner side of the left and right limiting steel plates (120), and a number of tie rods (230) thereon are respectively detachably locked and connected to the locking mechanism (300) located on the outer side of the two limiting steel plates (120).

2. The integral formwork and demolding structure of the T-beam / small box girder reinforcement cage with transverse diaphragm cover plate according to claim 1, characterized in that, The two angle steel frames (110) on the same end are arranged symmetrically and inclined, with their openings facing upward to form an inverted cone-shaped beam rib casting cavity, which together with the flange casting cavity formed at the top of the hydraulic side template forms a T-shaped casting model.

3. The integral formwork and demolding structure of the T-beam / small box girder reinforcement cage with transverse diaphragm cover plate according to claim 1, characterized in that, The outer wall of the limiting steel plate (120) is provided with a number of stiffening plates (130) from top to bottom, and the stiffening plates (130) are welded to the angle steel frame (110) and the limiting steel plate (120) through their chamfered edges.

4. The integral formwork and demolding structure of the T-beam / small box girder reinforcement cage with transverse diaphragm cover plate according to claim 1, characterized in that, The inner wall of the limiting steel plate (120) is staggered with the inner wall of the angle steel frame (110), and there is a height difference of at least 10 mm between the two planes.

5. The integral formwork and demolding structure of the T-beam / small box girder reinforcement cage with diaphragm cover plate according to claim 1, characterized in that, The transverse mold cover plate mechanism (200) includes a transverse partition cover plate (210), several sets of partition limiting plates (220), and the tie rod (230), wherein: The diaphragm cover plate (210) is an inverted conical plate structure, the shape and size of which match the cross-section of the end of the T-shaped casting model; Several of the aforementioned partition limiting plates (220) are I-shaped structures, respectively arranged vertically at intervals in the middle of the outer side wall of the transverse partition cover plate (210); and The inner ends of several of the pull rods (230) are vertically disposed at the middle position of the outer side wall of the diaphragm cover plate (210), and are correspondingly disposed at the top or bottom position near the diaphragm limiting plate (220).

6. The integral formwork and demolding structure of the T-beam / small box girder reinforcement cage with transverse diaphragm cover plate according to claim 5, characterized in that, The diaphragm cover plate (210) has a row of spaced through holes (211) for passing through the diaphragm reinforcement (400) on both the left and right sides along the end edge, and a number of diaphragm limiting plates (220) and tie rods (230) are provided between the two rows of through holes (211).

7. The integral formwork and demolding structure of the T-beam / small box girder reinforcement cage with transverse diaphragm cover plate according to claim 5, characterized in that, The dimensions of several partition limiting plates (220) gradually decrease from top to bottom, and are respectively embedded between the left and right angle steel frames (110) that gradually decrease in size.

8. The integral formwork and demolding structure of the T-beam / small box girder reinforcement cage with transverse diaphragm cover plate according to claim 5, characterized in that, The transverse mold cover plate mechanism (200) also includes double-sided adhesive tape (240) that is respectively pasted on the left and right ends of the outer side wall of the transverse partition cover plate (210). The two double-sided adhesive tapes (240) are respectively pasted and connected to the inner side walls of the two limiting steel plates (120) to form a sealing structure.

9. The integral formwork and demolding structure of the T-beam / small box girder reinforcement cage with transverse diaphragm cover plate according to claim 5, characterized in that, The partition limiting plate (220) and the tie rod (230) are arranged in 3-5 groups, with equal intervals between them; and the reinforcing plates (130) on the outer side walls of the limiting steel plate (120) on both sides are arranged in 6-10 groups, with equal intervals between them.

10. The integral formwork and demolding structure of the T-beam / small box girder reinforcement cage with transverse diaphragm cover plate according to claim 1, characterized in that, The locking mechanism (300) consists of an anchoring plate (310) and an anchor nut (320), wherein: The anchor plate (310) is a rectangular plate structure. It can be detachably sleeved on the tie rod (230) through the through hole in the middle, and the left and right ends are respectively set on the outer end frames of the left and right angle steel frames (110). The anchor nut (320) is threaded onto the tie rod (230) via a nut washer (330) so that the inner diaphragm cover plate (210) and the outer anchor pad plate (310) are pressed and fixed onto the left and right angle steel frames (110) via the tie rod (230).

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