Assembly type template system for deformation joint of bottom plate

Abstract

A bottom plate deformation joint assembly type formwork system relates to the technical field of constructional engineering and comprises an upper combined formwork, a lower combined formwork, a supporting structure and a plate face closing-up structure, the upper combined formwork and the lower combined formwork comprise an upper formwork structure and a lower formwork structure, the upper formwork structure is formed by transversely splicing a plurality of formwork units, and the lower formwork structure is formed by transversely splicing a plurality of formwork units. The upper formwork structure and the lower formwork structure are connected in a fastened mode through a clamp, the upper and lower combined formworks are connected with a reinforcement cage of a bottom plate to be poured on one side of the formwork system in a fastened mode through a supporting structure, and a plate face closing-up structure is arranged at the top end of the upper and lower combined formworks. The utility model discloses a bottom plate deformation joint assembly type formwork system, which is characterized in that a traditional formwork erecting mode of a deformation joint, namely a technical process that a deformation joint formwork is segmented up and down, is relatively complicated in bulk and disassembly and is low in working efficiency, is improved into a systematic, assembly type and higher-efficiency formwork structure form, so that the formwork system can be used in a flowing water circulation manner.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering, in particular to a base plate deformation joint assembled formwork system. Background Art

[0002] During construction, especially in large box culverts such as those at municipal facilities and airports, expansion joints are often installed at regular intervals due to the functional requirements of the concrete structure. Expansion joints are crucial for structural waterproofing and are a vulnerable link prone to water leakage, so they require special attention during construction. Currently, expansion joints are typically constructed with a rubber waterstop in the middle of the base plate, a back-mounted waterstop, and expansion joint plates. Due to the complex structure of this area, the following are the main issues with existing technologies for constructing expansion joint formwork:

[0003] 1. The process of setting up the upper and lower templates of the middle water stop is complicated: the upper and lower template components at the expansion joint are set up separately, in bulk, with many processes, high labor consumption, low mechanization level, poor turnover and high labor cost; and the upper and lower end faces are prone to misalignment.

[0004] 2. The large number of waterstop tie rods required results in high material costs. Since the formwork is divided into sections, each of the upper and lower sections is equipped with two tie rods to resist the lateral pressure of the concrete. Therefore, the material costs required for the multiple tie rods and bolt hole sealing processes are relatively high.

[0005] 3. It is not conducive to the protection of the finished waterstop. The traditional multi-process operation takes a long time, the amount of welding of the inclined anchor rod is large, and the upper and lower templates are supported in sections, which causes the middle waterstop to be exposed, which is not conducive to the protection of the waterstop. Utility Model Content

[0006] The present invention discloses a base plate expansion joint assembled formwork system, which improves the traditional expansion joint formwork support method, i.e., the expansion joint formwork is divided into upper and lower sections, and the bulk assembly and disassembly is relatively cumbersome and inefficient technical process, into a systematic, assembled and more efficient formwork structure, thereby realizing the continuous turnover use of the formwork system.

[0007] To achieve the above purpose, the technical solution of this novel invention is:

[0008] A base plate expansion joint assembled formwork system includes upper and lower combined formwork, a supporting structure and a plate surface closing structure. The upper and lower combined formwork includes an upper formwork structure formed by transversely splicing a plurality of formwork units and a lower formwork structure formed by transversely splicing a plurality of formwork units. The upper and lower formwork structures are fastened together by a clamp. The upper and lower combined formwork are fastened together with a steel cage of a base plate to be cast on one side of the formwork system through the supporting structure. A plate surface closing structure is provided at the top of the upper and lower combined formwork.

[0009] Preferably, the template unit includes a backboard, a number of vertical wooden planks fixed to the outer surface of the backboard and evenly distributed, and a horizontal wooden plank connected to the upper or lower end of the vertical wooden planks and fixedly connected to the backboard. The left and right adjacent template units are fixedly connected by a clamp, and the clamp is used to clamp the adjacent vertical wooden planks.

[0010] Preferably, the upper and lower ends of the outer surfaces of the upper and lower formwork structures are connected to form an integral structure through transversely arranged full-length wooden beams, and the full-length wooden beams at the lower part of the upper formwork structure are fastened to the full-length wooden beams at the upper part of the lower formwork structure by clamps.

[0011] Preferably, the clamp is a woodworking mold clamp, and a supporting angle steel is fixedly connected between the angle between the full-length wooden square and the corresponding vertical wooden square, and a pad is also provided on the top of the full-length wooden square above the lower template structure.

[0012] Preferably, the supporting structure includes inclined steel bars, flat steel, water-stop rods, and steel pipes. The bottom ends of the inclined steel bars are welded to the longitudinal steel bars at the bottom of the steel cage of the base plate to be cast. Two connecting holes are provided on the flat steel. The other end of the inclined steel bars passes through one of the connecting holes and is locked by a nut. One end of the water-stop rod passes through the other connecting hole and is locked by a nut. There are several groups of steel pipes, and each group of steel pipes includes two longitudinal steel pipes arranged side by side. The other end of the water-stop rod passes through the gap between the two longitudinal steel pipes and is locked by a butterfly clip and a nut. The water-stop rod is located on the rod body on the side of the base plate to be cast and is also connected to a water-stop pad.

[0013] Preferably, a middle rubber waterstop is provided at the top of the lower formwork structure, a back-stick rubber waterstop is connected to the bottom of the lower formwork structure, and an "L"-shaped steel anchor rod is also provided at the bottom of the lower formwork structure away from the bottom plate to be cast. The bottom of the "L"-shaped steel anchor rod is pre-embedded in the waterproof protective layer at the bottom of the bottom plate to be cast, and a wedging wooden square is also provided between the "L"-shaped steel anchor rod and the bottom of the outer surface of the lower formwork structure.

[0014] Preferably, the plate surface closing structure includes a closing plate, and a plurality of through holes arranged along the direction of the water stop rod are evenly distributed on the lower part of the closing plate. An iron wire is passed through the through hole, one end of the iron wire is connected to the steel cage of the base plate to be cast, and the other end is bound and connected to the steel pipe on the opposite side of the closing plate. The closing plate is laid flat on the top of the upper formwork structure and is fixedly connected to the top of the upper formwork structure by self-tapping screws.

[0015] This new type of bottom plate expansion joint assembled formwork system has the following beneficial effects:

[0016] 1. This new model uses the concept of assembly in the construction industry, dividing the formwork system into several large structural construction blocks, reducing the traditional complicated processes; and the formwork is formed into a whole through connectors, which is conducive to the subsequent overall adjustment of flatness, verticality and fastening, greatly improving work efficiency.

[0017] 2. This new type can make full use of on-site tower cranes and other lifting equipment to speed up the installation and disassembly progress, improve the construction efficiency and mechanization level of tower cranes, and reduce the construction period by about 1 / 3-1 / 2 compared with traditional installation and disassembly processes.

[0018] 3. This new model not only improves work efficiency and speeds up progress, but also greatly reduces labor, which is about 2 / 5 less than the traditional template process.

[0019] 4. This new type can realize the multiple and circular use of template materials, greatly saving materials and reducing consumption. Compared with traditional template technology, it saves 1 / 4 of materials and realizes green and material-saving construction.

[0020] 5. This new type of prefabricated formwork system is conducive to enhancing the protection of the waterstop; and the integrated reinforcement can solve the problem of easy misalignment of the upper and lower end faces, improve the linear straightness of the bottom plate edge, and ensure the quality of subsequent edge sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 , a side sectional view of the new upper and lower combined template;

[0022] Figure 2 , the front view of the new upper and lower combined template;

[0023] Figure 3 , the schematic diagram of the connection between the new upper and lower combined templates;

[0024] Figure 4 , a schematic diagram of the structure of the new model during installation (the circle B in the figure shows an enlarged view of the local structure);

[0025] Figure 5 , this new type Figure 4 Planar layout of waterstop tie rods in the middle 1-1 direction;

[0026] Figure 6 , schematic diagram of welding in the bottom longitudinal reinforcement binding area.

[0027] Diagram number: 1 - upper and lower combined formwork, 1-1 - back plate, 1-2 - vertical wood, 1-3 - horizontal wood, 1-4 - self-tapping screws, 1-5 - full-length wood, 1-6 - support angle steel, 1-7 - wooden pad, 1-8 - woodworking mold clamp, 2 - support structure, 2-1, inclined steel bar, 2-2 - flat steel, 2-3 - water stop rod, 2-4 - "L" type steel anchor rod, 2-5 - wedging wood, 2-6 - steel pipe, 2 -7—butterfly card, 2-8—waterstop pad, 3—closing plate, 3-1—through hole, 3-2—self-tapping screw, 3-3—iron wire, 4—back-stick rubber waterstop, 5—middle rubber waterstop, 6—cushion, 7—rolled waterproof layer, 8—waterproof protective layer, 9—pad, 10—rebar cage, 11—bottom steel bar, 12—stool bar, 13—top steel bar, 14—casting surface, 15—bottom longitudinal steel bar, 16—formwork unit. DETAILED DESCRIPTION

[0028] The following describes in detail the implementation methods of the present invention in a step-by-step manner. This description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "up", "down", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the purpose of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, and a specific direction structure and operation. Therefore, they cannot be understood as a limitation on the present invention.

[0030] Example 1

[0031] A base plate expansion joint assembly formwork system, such as Figure 1-6 As shown, it includes upper and lower combined templates 1, a support structure 2 and a plate surface closing structure. The upper and lower combined templates 1 include an upper template structure formed by horizontally splicing a plurality of template units 16 and a lower template structure formed by horizontally splicing a plurality of template units 16 (such as Figure 3 As shown), the upper and lower template structures are fastened together by a clamp, and the upper and lower combined templates 1 are fastened together with the steel cage 10 of the bottom plate to be cast on one side of the template system through the supporting structure 2, and a plate surface closing structure is provided at the top of the upper and lower combined templates 1.

[0032] Example 2

[0033] like Figure 1-3As shown, the template unit 16 includes a backboard 1-1, a number of vertical wood beams 1-2 fixed to the outer surface of the backboard 1-1 and evenly distributed, and a horizontal wood beam 1-3 connected to the upper or lower end of the vertical wood beams 1-2 and fixedly connected to the backboard 1-1. The left and right adjacent template units 16 are fixedly connected by a clamp, and the clamp is used to clamp the adjacent vertical wood beams 1-2.

[0034] like Figure 1-3 As shown, the upper and lower ends of the outer surfaces of the upper formwork structure and the lower formwork structure are connected into an integral structure through transversely arranged full-length wooden beams 1-5, and the full-length wooden beams at the lower part of the upper formwork structure are fastened to the full-length wooden beams at the upper part of the lower formwork structure by clamps.

[0035] like Figure 1 、 2 As shown, the clamp is a woodworking mold clamp 1-8, and a supporting angle steel 1-6 is fixedly connected between the angle between the full-length wooden square 1-5 and the corresponding vertical wooden square 1-2. A pad 1-7 is also provided on the top of the full-length wooden square above the lower formwork structure. The height of the pad should be higher than the height of the middle rubber waterstop 5 to be installed, so as to protect the middle rubber waterstop 5.

[0036] Example 3

[0037] like Figure 4-6 As shown, the supporting structure includes an inclined steel bar 2-1, a flat steel 2-2, a waterstop rod 2-3, and a steel pipe 2-6. The bottom end of the inclined steel bar 2-1 is welded to the longitudinal steel bar 15 at the bottom of the steel cage 10 of the base plate to be cast. Two connecting holes are opened on the flat steel 2-2. The other end of the inclined steel bar 2-1 passes through one of the connecting holes and is locked by a nut. One end of the waterstop rod 2-3 passes through the other connecting hole and is locked by a nut. There are several groups of steel pipes 2-6, and each group of steel pipes includes two longitudinal steel pipes arranged side by side. The other end of the waterstop rod 2-3 passes through the gap between the two longitudinal steel pipes and is locked by a butterfly clip 2-7 and a nut. The waterstop rod 2-3 is located on the rod body on the side of the base plate to be cast and is also connected to a waterstop pad 2-8.

[0038] like Figure 4-6 As shown, a middle rubber waterstop 5 is provided at the top of the lower formwork structure, a back-stick rubber waterstop 4 is connected to the bottom of the lower formwork structure, and an "L"-shaped steel anchor rod 2-4 is also provided at the bottom of the lower formwork structure away from the bottom plate to be cast. The bottom of the "L"-shaped steel anchor rod 2-4 is pre-embedded in the waterproof protective layer 8 at the bottom of the bottom plate to be cast, and a wedging wooden square 2-5 is also provided between the "L"-shaped steel anchor rod 2-4 and the bottom of the outer surface of the lower formwork structure.

[0039] Example 4

[0040] like Figure 4 As shown, the plate surface closing structure includes a closing plate 3, and a plurality of through holes 3-1 arranged along the direction of the water stop rod are evenly distributed on the lower part of the closing plate. An iron wire 3-3 passes through the through hole, and one end of the iron wire 3-3 is connected to the steel cage 10 of the bottom plate to be cast, and the other end is bound and connected to the steel pipe 2-6 on the opposite side of the closing plate 3. The closing plate 3 is laid flat on the top of the upper formwork structure and is fixedly connected to the top of the upper formwork structure by self-tapping screws 3-2.

[0041] How to use this new model:

[0042] 1. During the bottom plate reinforcement construction phase, the upper and lower combined templates 1 of the expansion joint are prepared simultaneously. The upper and lower combined templates 1 are assembled into standard parts. Figure 1 、 Figure 2 .

[0043] 2. For interlaced reinforcement construction, weld the inclined reinforcement 2-1 to the longitudinal reinforcement 15 at the bottom of the reinforcement cage of the base plate to be cast, with a weld length of 30 mm; connect the other end of the upper part to the flat steel, and at the same time, connect and fix the flat steel to one end of the water stop rod.

[0044] 3. Pre-embed “L”-shaped steel anchor rods on the waterproof protective layer 8 at intervals of 300mm-400mm.

[0045] 4. After the steel bars are inspected and accepted, install the middle and back waterstops, then install the upper and lower combined formwork at the construction location, check the size and position, ensure that the upper and lower formwork structures are aligned, and then use the carpentry mold clamp to connect the upper and lower formwork structures into one, and clamp the waterstops. Figure 3 .

[0046] 5. Install φ48 main rib double steel pipes to ensure that the verticality of the upper and lower combined formwork meets the acceptance requirements; and install wedge-tight wooden planks at the "L"-shaped steel anchor rods at the bottom of the upper and lower combined formwork to firmly fix the formwork.

[0047] 6. Install the expansion joint closing plate according to the pouring line on the top surface of the bottom plate. Use double strands of 12# iron wire to tighten the upper and lower template structures. After aligning the straightness of the upper edge with the closing plate, tighten the closing plate with extended self-tapping screws. Figure 4 、 Figure 5 、 Figure 6 .

[0048] 7. Once the base plate is cast and ready for demolding, the formwork can be removed. The upper and lower combined formwork, L-shaped steel anchors, exposed tie rods, and other components are removed and arranged. A release agent is applied to the side of the back plate that contacts the concrete. All prefabricated components are hoisted to the next construction section using a tower crane or other transport equipment for rotation, repeating steps 2-7.

Claims

1. A base plate expansion joint assembled formwork system, characterized by: It includes upper and lower combined formwork, a supporting structure and a plate surface closing structure. The upper and lower combined formwork includes an upper formwork structure formed by transversely splicing a number of formwork units and a lower formwork structure formed by transversely splicing a number of formwork units. The upper and lower formwork structures are fastened together by clamps. The upper and lower combined formwork are fastened together with the steel cage of the bottom plate to be cast on one side of the formwork system through the supporting structure, and a plate surface closing structure is provided at the top of the upper and lower combined formwork.

2. The base plate expansion joint prefabricated formwork system according to claim 1, characterized in that: The template unit includes a backboard, several vertical wooden strips fixed to the outer surface of the backboard and evenly distributed, and horizontal wooden strips connected to the upper or lower end of the vertical wooden strips and fixedly connected to the backboard. The adjacent template units on the left and right are fixedly connected by a clamp, and the clamp is used to clamp the adjacent vertical wooden strips.

3. The base plate expansion joint prefabricated formwork system according to claim 2, characterized in that: The upper and lower ends of the outer surfaces of the upper and lower template structures are connected to form an integral structure through transversely arranged full-length wooden beams, and the full-length wooden beams at the lower part of the upper template structure are fastened to the full-length wooden beams at the upper part of the lower template structure by clamps.

4. The base plate expansion joint prefabricated formwork system according to claim 3, characterized in that: The clamp is a woodworking mold clamp, and a supporting angle steel is fixedly connected between the angles of the full-length wooden square and the corresponding vertical wooden square. A pad is also provided on the top of the full-length wooden square above the lower template structure.

5. The base plate expansion joint prefabricated formwork system according to claim 4, characterized in that: The supporting structure includes inclined steel bars, flat steel, water-stop rods, and steel pipes. The bottom ends of the inclined steel bars are welded to the longitudinal steel bars at the bottom of the steel cage of the base plate to be cast. Two connecting holes are provided on the flat steel. The other end of the inclined steel bars passes through one of the connecting holes and is locked by a nut. One end of the water-stop rod passes through the other connecting hole and is locked by a nut. There are several groups of steel pipes, and each group of steel pipes includes two longitudinal steel pipes arranged side by side. The other end of the water-stop rod passes through the gap between the two longitudinal steel pipes and is locked by a butterfly clip and a nut. The water-stop rod is located on the rod body on the side of the base plate to be cast and is also connected to a water-stop pad.

6. The base plate expansion joint prefabricated formwork system according to claim 5, characterized in that: A middle rubber waterstop is provided at the top of the lower formwork structure, and a back-stick rubber waterstop is connected to the bottom of the lower formwork structure. An "L"-shaped steel anchor rod is also provided at the bottom of the lower formwork structure away from the bottom plate to be cast. The bottom of the "L"-shaped steel anchor rod is pre-embedded in the waterproof protective layer at the bottom of the bottom plate to be cast, and a wedging wooden square is also provided between the "L"-shaped steel anchor rod and the bottom of the outer surface of the lower formwork structure.

7. The base plate expansion joint prefabricated formwork system according to claim 6, characterized in that: The plate surface closing structure includes a closing plate, and a plurality of through holes arranged along the direction of the water stop pull rod are evenly distributed on the lower part of the closing plate. An iron wire is passed through the through hole, one end of the iron wire is connected to the steel cage of the base plate to be cast, and the other end is bound and connected to the steel pipe on the opposite side of the closing plate. The closing plate is laid flat on the top of the upper formwork structure and is fixedly connected to the top of the upper formwork structure by self-tapping screws.

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