Precast beam cast-in-place bridge floor mold unit and mold system matched with same

Abstract

The utility model relates to the technical field of water supply and drainage pipeline installation, in particular to a prefabricated cast-in-place bridge floor joint mold system which comprises a cast-in-place bridge floor template located between two prefabricated T-beams, and two sets of reserved pulling and holding assemblies matched with the prefabricated T-beams are symmetrically arranged on the cast-in-place bridge floor template. A reserved groove matched with the reserved pulling and holding assembly is formed in the prefabricated T-beam, and a protection piece matched with the reserved pulling and holding assembly is arranged on the prefabricated T-beam. During use, dense fine sand is filled in a gap between the cast-in-place bridge floor and the prefabricated T-beam, the protection piece is located in a bridge floor cast-in-place concrete layer, and the top face of the cast-in-place bridge floor formwork and the top face of the prefabricated T-beam are located on the same plane. Through refined design and innovative structural optimization, the key technical problem in the construction of the cast-in-place bridge floor of the precast beam is solved, the construction efficiency, quality and economical efficiency are greatly improved, and remarkable technical advantages are shown.

Description

Technical Field

[0001] The utility model relates to the technical field of installation of water supply and drainage pipelines, in particular to a precast beam cast-in-place bridge deck mold unit and a matching mold system thereof. Background Art

[0002] In the field of modern bridge construction, with the continuous progress of construction technology and the development of materials science, the construction method combining precast beams and cast-in-place bridge decks has become an important means to improve the construction efficiency and quality of bridges. However, this construction mode faces a series of technical challenges in practical applications. In particular, how to efficiently and accurately complete the joint treatment between precast beams and cast-in-place bridge decks to ensure the continuity, stability and durability of the overall bridge structure has become a key problem to be solved urgently.

[0003] The existing construction technology for precast beam cast-in-place bridge decks usually involves using temporary supports and fixing devices to ensure the stability and correct positioning of the bridge deck formwork. These technologies have the following problems: In traditional construction methods, the process of setting up and removing the formwork takes a long time, affecting the overall construction progress. The connection between precast beams and cast-in-place bridge decks is often a difficult point in construction, and unstable connection may lead to a decline in structural performance. During the on-site pouring process, it is difficult to control the density and uniformity of concrete, affecting the quality of the bridge deck. During the construction process, it is a great challenge to accurately adjust the formwork to adapt to precast beams of different sizes.

[0004] How to solve the above technical problems is the subject faced by the utility model. Summary of the Invention

[0005] In order to solve the deficiencies of the prior art, the utility model provides a precast beam cast-in-place bridge deck mold unit with reasonable design, safety and reliability, and a matching mold system thereof. Through fine mold design and innovative dynamic adjustment mechanism, it not only ensures the precise alignment and high-quality molding of the connection between precast beams and cast-in-place bridge decks, but also improves the construction flexibility and efficiency, solves a series of technical problems faced in traditional construction, and provides advanced technical support for bridge construction.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a precast beam cast-in-place bridge deck mold unit, including a cast-in-place bridge deck formwork located between two precast T-beams. Two groups of reserved pulling and holding components matched with the precast T-beams are symmetrically arranged on both sides of the cast-in-place bridge deck formwork. Reserved grooves matched with the reserved pulling and holding components are opened on the precast T-beams, and protective parts matched with the reserved pulling and holding components are arranged on the precast T-beams;

[0007] During use, the gap between the cast-in-place bridge deck and the precast T-beam is filled with dense fine sand, and the protective member is located in the cast-in-place concrete layer of the bridge deck, and the top surface of the cast-in-place bridge deck formwork is in the same plane as the top surface of the precast T-beam.

[0008] Furthermore, the cast-in-place bridge deck formwork includes a horizontal cast-in-place formwork that is in the same plane as the top surface of the precast T-beam. Connecting laminates are provided at both ends of the horizontal cast-in-place formwork, and a holding laminate that cooperates with the reserved holding assembly is provided on the connecting laminate; during use, the gap between the connecting laminate and the precast T-beam is filled with dense fine sand.

[0009] Preferably, a holding layer frame is provided on the holding laminate, a connecting layer frame connected to the holding layer frame is provided on the connecting laminate, and a supporting bracket that cooperates with the horizontal cast-in-place formwork is provided on the connecting layer frame. A number of receiving slots are provided on the supporting bracket, and a number of receiving rods that cooperate with the receiving slots are provided on the horizontal cast-in-place formwork.

[0010] Preferably, a stable expansion support frame is provided between the two holding laminates. A stable support assembly that cooperates with the two connecting laminates located at both ends of the horizontal cast-in-place formwork is provided on the stable expansion support frame. A number of strengthening ribs are provided on the bottom surface of the horizontal cast-in-place formwork.

[0011] Furthermore, the stable expansion support frame includes a stable support. Connecting brackets are provided on both sides of the stable support. The horizontal cast-in-place formwork is provided with a docking frame that is connected and cooperates with the connecting bracket. Expansion support brackets that slide in cooperation with the stable support are provided at both ends of the stable support. A connecting screw rod connected to the holding laminate is provided on the expansion support bracket. An expansion unit for controlling the same-direction movement or opposite-direction movement of the two expansion support brackets is provided on the stable support.

[0012] Furthermore, the stable support assembly includes two groups of articulated frames symmetrically arranged on the stable support. One group of articulated frames includes a number of articulated frames evenly arranged on the stable support along the length direction of the expansion support bracket. A stabilizing frame is provided on the articulated frame, and a stabilizing support connected to the connecting laminate is provided on the stabilizing frame.

[0013] Furthermore, the expansion unit includes a sliding frame provided on the stable support. A sliding slot is provided on the sliding frame. Two groups of expansion sliding frames are symmetrically arranged on the stable support. An expansion slot that cooperates with the expansion sliding frame is provided on the expansion sliding frame. The length direction of the expansion slot is perpendicular to the length direction of the sliding slot, and the length direction of the expansion slot is the same as the sliding direction of the expansion support bracket;

[0014] Each group of the expansion slides comprises a plurality of expansion slides uniformly arranged on the stabilizing bracket along the length direction of the sliding groove, the sliding groove is provided with a plurality of driving blocks slidably matched with the sliding groove, and both ends of the driving blocks are provided with connecting rods, the expansion slides are provided with expansion sliders connected with the connecting rods, and the expansion sliders are connected with the expansion brackets;

[0015] A driving rod is arranged between two adjacent driving blocks, and a driving hydraulic cylinder connected to the driving block located at one end of the stable bracket is arranged at one end of the stable bracket, and the telescopic direction of the driving hydraulic cylinder is consistent with the length direction of the sliding groove.

[0016] Furthermore, the holding assembly includes a through tube passing through the reserved groove, a stabilizing ring plate is arranged on the top surface of the through tube, a holding screw is arranged in the through tube, a holding nut cooperating with the stabilizing ring plate is arranged on the holding screw, and a holding pad cooperating with the cast-in-place bridge deck formwork is arranged at the bottom end of the holding screw; the protective part is configured as a protective sleeve.

[0017] Preferably, an auxiliary steel wire rope cooperating with the pulling screw is provided in the protective sleeve.

[0018] A precast beam cast-in-place bridge deck joint mold system comprises a plurality of precast beam cast-in-place bridge deck joint mold units and a stable connecting frame used for connecting two adjacent precast beam cast-in-place bridge deck joint mold units.

[0019] The utility model ensures the smooth transition of the joints between the cast-in-place bridge deck and the precast beam through precise mold positioning and dense concrete pouring, improves the overall aesthetics of the bridge, and also ensures the sealing of the joints, reduces the cost of later maintenance, and extends the service life of the bridge. The efficient, flexible and universal design of the overall system reduces material waste, reduces construction costs, shortens the construction period, reduces the impact on the environment, and conforms to the green construction concept of modern bridge construction.

[0020] The utility model ensures the precise alignment of the mold unit and the prefabricated beam by tightly combining the reserved holding component with the reserved groove on the prefabricated T beam, simplifies the on-site positioning process, and improves the accuracy and efficiency of construction. The coordinated use of the reserved groove and the protective piece further ensures the compactness of the connection between the bridge deck and the prefabricated beam, avoiding the common problems of loose joints and leakage in traditional construction.

[0021] The design of the stable expansion frame and expansion unit in the utility model enables the mold system to be flexibly adjusted according to the width of the bridge deck, adapting to different bridge design requirements, reducing the complexity and cost of mold customization, and improving the versatility of the system. The dynamic adjustment mechanism simplifies the on-site adjustment process and improves the flexibility of construction.

[0022] In the mold system of the present utility model, the design of the reinforcing ribs enhances the structural strength of the formwork, ensures the stability and anti-deformation ability of the formwork during the pouring process, and improves the final finished product quality of the bridge deck. The use of the protective sleeve and the auxiliary steel wire rope further strengthens the key connection parts and ensures the durability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present utility model in cooperation with a precast T-beam;

[0024] Figure 2 It is a schematic diagram of the overall structure of the present utility model;

[0025] Figure 3 It is a schematic diagram of the overall exploded structure of the present utility model;

[0026] Figure 4 It is a partial structural schematic diagram of the stable expansion support frame of the present utility model;

[0027] Among them, the drawing reference numerals are: 100, cast-in-place bridge deck formwork; 110, horizontal cast-in-place formwork; 111, socket rod; 112, docking frame; 120, connecting layer board; 121, connecting layer frame; 122, supporting bracket; 130, tension layer board; 131, tension layer frame; 200, reserved tension assembly; 210, through cylinder; 220, tension screw rod; 230, tension nut; 300, precast T-beam; 400, protective member; 500, stable expansion support frame; 510, stable support; 520, connecting support; 530, expansion support; 540, expansion unit; 541, sliding frame; 542, expansion sliding frame; 543, driving block; 544, connecting rod; 545, expansion slider; 546, driving rod; 547, driving hydraulic cylinder; 600, stable support assembly; 610, hinge frame; 620, stabilizing frame; 630, stabilizing support. SPECIFIC EMBODIMENTS

[0028] See Figures 1 to 4 As shown, a precast beam cast-in-place bridge deck mold unit includes a cast-in-place bridge deck formwork 100 located between two precast T-beams 300. Two groups of reserved tension assemblies 200 that cooperate with the precast T-beams 300 are symmetrically arranged on the cast-in-place bridge deck formwork 100. A reserved groove that cooperates with the reserved tension assembly 200 is provided on the precast T-beam 300, and a protective member 400 that cooperates with the reserved tension assembly 200 is provided on the precast T-beam 300;

[0029] During use, the gap between the cast-in-place bridge deck and the precast T-beam 300 is filled with dense fine sand, and the protective member 400 is located in the cast-in-place concrete layer of the bridge deck, and the top surface of the cast-in-place bridge deck formwork 100 is in the same plane as the top surface of the precast T-beam 300.

[0030] Specifically, the precast beam cast-in-place bridge deck mold unit is designed between two precast T-beams 300 to form a continuous bridge deck structure. Each mold unit includes a cast-in-place bridge deck formwork 100, which is connected to the precast T-beam 300 through a reserved holding assembly 200. The reserved holding assembly 200 is located at the symmetrical position of the cast-in-place bridge deck formwork 100 and cooperates with the reserved groove on the T-beam to ensure the stable positioning of the mold unit. The protective member 400 on the precast T-beam 300 cooperates with the reserved holding assembly 200 of the mold and is located in the cast-in-place concrete layer of the bridge deck, playing a role in protecting the holding assembly. At the same time, the gap between the precast beam and the cast-in-place bridge deck formwork 100 is filled with dense fine sand, which not only plays a good sealing role but also increases the tightness of the fit between the formwork and the beam body, reducing the voids and bubbles during concrete pouring.

[0031] Further, the cast-in-place bridge deck formwork 100 includes a horizontal cast-in-place formwork 110 that is in the same plane as the top surface of the precast T-beam 300. Connection laminates 120 are provided at both ends of the horizontal cast-in-place formwork 110, and a holding laminate 130 that cooperates with the reserved holding assembly 200 is provided on the connection laminate 120. During use, the gap between the connection laminate 120 and the precast T-beam 300 is filled with dense fine sand.

[0032] Preferably, a holding layer frame 131 is provided on the holding laminate 130, a connection layer frame 121 connected to the holding layer frame 131 is provided on the connection laminate 120, a support bracket 122 that cooperates with the horizontal cast-in-place formwork 110 is provided on the connection layer frame 121, a number of receiving slots are provided on the support bracket 122, and a number of receiving rods 111 that cooperate with the receiving slots are provided on the horizontal cast-in-place formwork 110.

[0033] Specifically, the reserved holding component 200 is closely combined with the reserved slot on the precast T-beam 300 and further reinforced through the holding layer board 130 and the connecting layer board 120. A holding layer frame 131 is arranged on the holding layer board 130, and fine sand is filled in the gap between the connecting layer board 120 and the precast T-beam 300 to ensure density and stability. The holding layer frame 131 and the connecting layer frame 121 are connected through a bearing bracket 122 and a socket rod 111 to enhance the stability of the overall structure. Holding layer boards 130 are arranged on the connecting layer boards 120 at both ends of the horizontal cast-in-place formwork 110, and the holding layer frame 131 on the holding layer board 130 cooperates with the horizontal cast-in-place formwork 110 and is connected through the socket slot on the bearing bracket 122 and the socket rod 111 on the horizontal cast-in-place formwork 110 to achieve precise support and adjustment of the formwork.

[0034] Preferably, a stable expansion support frame 500 is arranged between the two holding layer boards 130, and a stable support component 600 that cooperates with the two connecting layer boards 120 located at both ends of the horizontal cast-in-place formwork 110 is arranged on the stable expansion support frame 500. A plurality of reinforcing ribs are arranged on the bottom surface of the horizontal cast-in-place formwork 110.

[0035] Further, the stable expansion support frame 500 includes a stable support 510, connecting brackets 520 are arranged on both sides of the stable support 510, the horizontal cast-in-place formwork 110 is provided with a docking frame 112 connected and cooperating with the connecting brackets 520, expansion support frames 530 that are slidably matched with the stable support 510 are arranged at both ends of the stable support 510, connecting screws connected to the holding layer board 130 are arranged on the expansion support frames 530, and an expansion unit 540 for controlling the same-direction movement or opposite-direction movement of the two expansion support frames 530 is arranged on the stable support 510.

[0036] Further, the stable support component 600 includes two groups of articulated frames 610 symmetrically arranged on the stable support 510. One group of articulated frames 610 includes a plurality of articulated frames 610 uniformly arranged on the stable support 510 along the length direction of the expansion support frame 530. A stabilizing frame 620 is arranged on the articulated frame 610, and a stabilizing support 630 connected to the connecting layer board 120 is arranged on the stabilizing frame 620.

[0037] Further, the expansion unit 540 includes a sliding frame 541 arranged on the stable support 510. A sliding groove is formed in the sliding frame 541. Two groups of expansion sliding frames 542 are symmetrically arranged on the stable support 510. An expansion groove that cooperates with the expansion sliding frame 542 is formed in the expansion sliding frame 542, and the length direction of the expansion groove is perpendicular to the length direction of the sliding groove, and the length direction of the expansion groove is consistent with the sliding direction of the expansion support frame 530.

[0038] Each set of the expansion support sliders 542 includes a plurality of expansion support sliders 542 uniformly arranged on the stable support 510 along the length direction of the sliding groove. A plurality of driving blocks 543 slidably engaged with the sliding groove are arranged in the sliding groove. Connecting rods 544 are arranged at both ends of the driving block 543. An expansion slider 545 connected to the connecting rod 544 is arranged on the expansion support slider 542, and the expansion slider 545 is connected to the expansion support 530;

[0039] A driving rod 546 is arranged between two adjacent driving blocks 543. A driving hydraulic cylinder 547 connected to the driving block 543 at one end of the stable support 510 is arranged at one end of the stable support 510. The telescopic direction of the driving hydraulic cylinder 547 is consistent with the length direction of the sliding groove.

[0040] Specifically, the stable expansion frame 500 is arranged between two holding laminates 130, cooperates with the connecting laminate 120, and provides additional stability. The stable expansion frame 500 includes a stable support 510 and a connecting support 520, and is connected to the docking frame 112 of the horizontal cast-in-place formwork 110 to form a stable support structure. The reinforcing ribs on the bottom surface of the horizontal cast-in-place formwork 110 further enhance the rigidity and load-bearing capacity of the formwork. The expansion unit 540 on the stable support 510 controls the same-direction movement or opposite-direction movement of the expansion support 530, and realizes the expansion and contraction of the formwork through the driving hydraulic cylinder 547 to meet the construction requirements of bridge decks with different widths.

[0041] Particularly, the stable expansion frame 500 is designed as an adjustable structure, and the dynamic adjustment of the mold width is realized through the expansion unit 540 to meet the requirements of bridge decks with different widths. This design greatly improves the versatility and flexibility of the mold. At the same time, the introduction of the hinge frame 610 and the stabilizing frame 620 further enhances the stability of the mold during the dynamic adjustment process, ensuring that the mold still maintains the overall rigidity and accuracy even when the width is adjusted.

[0042] Further, the holding assembly includes a through cylinder 210 penetrating through the reserved groove. A stable ring plate is arranged on the top surface of the through cylinder 210. A holding screw 220 is arranged in the through cylinder 210. A holding nut 230 cooperating with the stable ring plate is arranged on the holding screw 220. A holding backing plate cooperating with the cast-in-place bridge deck formwork 100 is arranged at the bottom end of the holding screw 220; the protective member 400 is arranged as a protective sleeve.

[0043] Preferably, an auxiliary steel wire rope cooperating with the holding screw 220 is arranged in the protective sleeve.

[0044] Specifically, the pulling component includes a through cylinder 210 passing through the reserved groove, a pulling screw 220, a stable ring plate, a pulling nut 230, and a pulling backing plate cooperating with the cast-in-place bridge deck formwork 100. The protective member 400 is usually a protective sleeve and may include auxiliary steel wire ropes to provide additional protection and adjustment functions.

[0045] A precast beam cast-in-place bridge deck joint mold system includes a plurality of precast beam cast-in-place bridge deck joint mold units and a stable connecting frame for connecting adjacent two precast beam cast-in-place bridge deck joint mold units.

[0046] Specifically, the stable connecting frame can be used to connect the pulling layer frame 131, the connecting layer frame 121, and the stable expansion support frame 500 in two adjacent precast beam cast-in-place bridge deck joint mold units.

[0047] Specifically, the precast beam cast-in-place bridge deck joint mold system is composed of a plurality of mold units, and adjacent mold units are connected by a stable connecting frame to form a continuous bridge deck construction system. The stable connecting frame connects the pulling layer frame 131, the connecting layer frame 121, and the stable expansion support frame 500 to ensure the integrity and stability of the entire system.

[0048] The technical features not described in the present utility model can be realized by or adopted the prior art, and will not be elaborated here. Of course, the above description is not a limitation to the present utility model, and the present utility model is not limited to the above examples. Changes, modifications, additions or substitutions made by those of ordinary skill in the art within the scope of the essence of the present utility model shall also fall within the protection scope of the present utility model.

Claims

1. A precast beam cast-in-place bridge deck mold unit, characterized in that: It includes a cast-in-place bridge deck formwork (100) located between two precast T-beams (300). Two groups of reserved holding components (200) that cooperate with the precast T-beams (300) are symmetrically arranged on the cast-in-place bridge deck formwork (100). Reserved grooves that cooperate with the reserved holding components (200) are formed on the precast T-beams (300), and a protective member (400) that cooperates with the reserved holding components (200) is arranged on the precast T-beams (300). During use, the gap between the cast-in-place bridge deck and the precast T-beams (300) is filled with dense fine sand, and the protective member (400) is located in the cast-in-place concrete layer of the bridge deck. The top surface of the cast-in-place bridge deck formwork (100) is in the same plane as the top surface of the precast T-beams (300).

2. The precast beam cast-in-place bridge deck mold unit according to claim 1, characterized in that: The cast-in-place bridge deck formwork (100) includes a horizontal cast-in-place formwork (110) that is in the same plane as the top surface of the precast T-beams (300). Connecting laminates (120) are arranged at both ends of the horizontal cast-in-place formwork (110), and holding laminates (130) that cooperate with the reserved holding components (200) are arranged on the connecting laminates (120). During use, the gap between the connecting laminates (120) and the precast T-beams (300) is filled with dense fine sand.

3. The precast beam cast-in-place bridge deck mold unit according to claim 2, characterized in that: A holding layer frame (131) is arranged on the holding laminate (130), a connecting layer frame (121) that is connected to the holding layer frame (131) is arranged on the connecting laminate (120), a supporting bracket (122) that cooperates with the horizontal cast-in-place formwork (110) is arranged on the connecting layer frame (121), several receiving slots are arranged on the supporting bracket (122), and several receiving rods (111) that cooperate with the receiving slots are arranged on the horizontal cast-in-place formwork (110).

4. The precast beam cast-in-place bridge deck mold unit according to claim 2, characterized in that: A stable expanding support frame (500) is arranged between the two holding laminates (130). A stable support component (600) that cooperates with the two connecting laminates (120) located at both ends of the horizontal cast-in-place formwork (110) is arranged on the stable expanding support frame (500), and several strengthening rib strips are arranged on the bottom surface of the horizontal cast-in-place formwork (110).

5. The precast beam cast-in-place bridge deck mold unit according to claim 4, characterized in that: The stable expanding support frame (500) includes a stable support (510). Connecting supports (520) are arranged on both sides of the stable support (510). The horizontal cast-in-place formwork (110) is provided with a docking frame (112) that is connected and cooperates with the connecting supports (520). Expansion supports (530) that are slidably matched with the stable support (510) and are connected to the holding laminates are arranged at both ends of the stable support (510). Connecting screws that are connected to the holding laminates (130) are arranged on the expansion supports (530), and an expansion unit (540) for controlling the same-direction movement or opposite-direction movement of the two expansion supports (530) is arranged on the stable support (510).

6. The precast beam cast-in-place bridge deck mold unit according to claim 5, characterized in that: The stable support assembly (600) includes two sets of articulated frames (610) symmetrically arranged on the stable support (510). One set of articulated frames (610) includes several articulated frames (610) evenly arranged on the stable support (510) along the length direction of the expansion support (530). A stabilizing frame (620) is arranged on the articulated frame (610), and a stabilizing support (630) connected to the connecting layer plate (120) is arranged on the stabilizing frame (620).

7. A precast beam cast-in-place bridge deck mold unit as described in claim 5, characterized in that: The expansion unit (540) includes a sliding frame (541) arranged on the stable support (510). A sliding groove is formed in the sliding frame (541). Two sets of expansion sliding frames (542) are symmetrically arranged on the stable support (510). An expansion groove matching with the expansion sliding frame (542) is formed in the expansion sliding frame (542). The length direction of the expansion groove is perpendicular to the length direction of the sliding groove, and the length direction of the expansion groove is consistent with the sliding direction of the expansion support (530). Each set of expansion sliding frames (542) includes several expansion sliding frames (542) evenly arranged on the stable support (510) along the length direction of the sliding groove. Several driving blocks (543) slidingly matched with the sliding groove are arranged in the sliding groove. Connecting rods (544) are arranged at both ends of the driving block (543). An expansion sliding block (545) connected to the connecting rod (544) is arranged on the expansion sliding frame (542), and the expansion sliding block (545) is connected to the expansion support (530). A driving rod (546) is arranged between two adjacent driving blocks (543). A driving hydraulic cylinder (547) connected to the driving block (543) at one end of the stable support (510) is arranged at one end of the stable support (510). The telescopic direction of the driving hydraulic cylinder (547) is consistent with the length direction of the sliding groove.

8. The precast beam cast-in-place bridge deck mold unit according to claim 1, characterized in that: The pulling component includes a through cylinder (210) passing through the reserved groove. A stable ring plate is arranged on the top surface of the through cylinder (210). A pulling screw rod (220) is arranged in the through cylinder (210). A pulling nut (230) matching with the stable ring plate is arranged on the pulling screw rod (220). A pulling backing plate matching with the cast-in-place bridge deck formwork (100) is arranged at the bottom end of the pulling screw rod (220). The protective member (400) is arranged as a protective sleeve.

9. A precast beam cast-in-place bridge deck mold unit according to claim 8, characterized in that: An auxiliary steel wire rope matching with the pulling screw rod (220) is arranged in the protective sleeve.

10. A precast beam cast-in-place bridge deck joint mold system, characterized in that: It includes several precast beam cast-in-place bridge deck joint mold units as described in claim 1, and a stable connecting frame for connecting two adjacent precast beam cast-in-place bridge deck joint mold units as described in claim 1.

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