An adjustable leakproof slurry blocking template structure for a laminated slab joint

Abstract

The present application relates to precast slab pouring formwork technical field, specifically puts forward a kind of adjustable type composite board joint sealing formwork structure of anti-leakage slurry;Including module formwork, butt joint plate and suspension assembly;Module formwork includes supporting bottom plate, buffer bracket and sealing plate;Butt joint plate is used to detachable butt joint and is installed between the supporting bottom plate of two module formwork and constitutes bottom formwork;Suspension assembly is used to horizontally overlap on the precast bottom plate of joint two sides, and suspends bottom formwork;Template structure provided by the present application adopts module formwork and butt joint plate and carries out flexible butt joint assembly design, and modular structure design replaces the overall long plate structure of traditional formwork, can be step by step segmented fast formwork disassembly, construction is more labor-saving and safer, can flexibly adapt to the formwork sealing requirement of different length joint, can make up the drawbacks of leakage slurry caused by the poor flatness of the lower end of precast bottom plate or the existence of local slight deformation of sealing plate.

Description

Technical Field

[0001] This invention relates to the field of precast slab casting template technology, and specifically proposes an adjustable composite slab joint sealing template structure to prevent grout leakage. Background Technology

[0002] A precast floor slab is an assembled monolithic floor slab composed of a precast base slab and a cast-in-place concrete layer. The two layers work together to bear the load, combining the advantages of rapid precast construction with the integrity and seismic resistance of cast-in-place construction. It is the most commonly used horizontal component in prefabricated residential and public buildings. During construction, a relatively wide gap is left between the precast base slabs as a construction joint for the cast-in-place concrete. The embedded steel bars on both sides of the gap are connected, and then concrete is poured, so that the precast base slab forms a continuously stressed monolithic structure.

[0003] In current construction processes, slab joints need to be sealed using formwork. Formwork is mainly divided into wooden formwork and metal formwork. Wooden formwork is mostly disposable, while metal formwork is generally reusable steel or aluminum formwork. Metal formwork is supported by a support frame or suspended formwork for sealing slab joints. Existing metal formwork is basically a simple integral welded long plate structure. The structure is simple and easy to construct, but it still has the following obvious defects: 1. The integral long plate structure is large in size and heavy, making it inconvenient to transfer and transport; disassembly and assembly during formwork is laborious, increasing the safety risks of construction.

[0004] 2. During repeated use, the repeated disassembly and transportation increase the possibility of template deformation. Deformation of the template structure directly affects the sealing performance during sealing, which can easily cause grout leakage. Moreover, for templates with an integral structure, the template can only be tightly attached to the lower end of the slab joint during sealing. It is impossible to effectively adjust and remedy the local grout leakage caused by slab deformation. Furthermore, grout leakage is also easy when the flatness of the lower end of the precast base plate is not good. In addition, when the template is deformed significantly, it is easy to scrap the entire template, resulting in significant template loss.

[0005] 3. It is an integral long plate structure with a fixed length, which makes it poorly adaptable to sealing gaps between plates of different lengths.

[0006] 4. The formwork is an integral long plate structure. When supporting large spans, the formwork is more prone to downward deflection and deformation. In addition, the formwork directly and rigidly bears the impact of concrete pouring, which is also prone to deformation due to impact, thus affecting the sealing performance when reused in the future. Summary of the Invention

[0007] To address the aforementioned problems, this invention provides an adjustable composite slab joint sealing template structure to prevent grout leakage, thereby resolving the issues mentioned in the background section.

[0008] To achieve the above objectives, the present invention employs the following technical solution: an adjustable composite slab joint sealing template structure for preventing grout leakage, comprising modular templates, a butt joint plate, and a suspension assembly; the modular template includes a supporting base plate, a buffer bracket, and a sealing plate; the buffer bracket is vertically slidably installed on the upper end of the supporting base plate, and the buffer bracket can be height-adjusted relative to the supporting base plate; the sealing plate is detachably installed on the top of the buffer bracket and used to seal the lower end of the precast base slab joint; the butt joint plate is detachably butt-jointed between the supporting base plates of two modular templates to form a bottom template; the suspension assembly is horizontally overlapped on the precast base plates on both sides of the joint and suspends the bottom template; when the suspension assembly suspends the bottom template and seals the sealing plate at the lower end of the joint, the height of the buffer bracket can be adjusted to independently and adaptively seal the sealing plate against the bottom end of the precast base plates on both sides of the joint, and the buffer bracket provides buffer support between the sealing plate and the supporting base plate.

[0009] Preferably, when the mating plates are installed between two supporting base plates, the two sealing plates overlap on the upper part of the mating plates and their opposite ends abut against each other.

[0010] Preferably, the buffer bracket includes a base plate that is vertically slidably mounted on the support base plate and whose height is adjustable; a support plate is vertically slidably limited above the base plate; and a buffer pad and multiple disc springs are assembled between the support plate and the base plate.

[0011] Preferably, an adjusting screw is vertically and rotatably mounted on the bottom end of the base plate; the supporting base plate is provided with a screw hole that is threadedly engaged with the adjusting screw.

[0012] Preferably, the base plate has multiple guide posts at its bottom end; the supporting base plate has multiple guide holes for vertical sliding cooperation of the multiple guide posts.

[0013] Preferably, the bottom end of the support plate is vertically fixed with multiple limiting guide rods; the limiting guide rods and guide posts are vertically connected and slidably engaged; disc springs are sleeved on the limiting guide rods.

[0014] Preferably, the supporting base plate has symmetrical slots at both ends, and the extension direction of the slots is perpendicular to the opposite direction of the two ends where the slots are located; the mating plate is inserted into the slots at the opposite ends of the two supporting base plates; the mating plate is disconnected in the insertion direction.

[0015] Preferably, the suspension assembly includes a suspension rod that can vertically pass through the module template or the connecting plate; the top of the suspension rod is fixed with an overlap strip that can horizontally overlap the precast base plate on both sides of the plate joint; and the lower end of the suspension rod is threadedly fitted with a tray nut for supporting the bottom of the supporting base plate.

[0016] Preferably, at least one connecting rod is installed in series between multiple overlapping strips.

[0017] Preferably, the sealing plate has side retaining edges that are fitted between the two sides of the support plate.

[0018] The above technical solution has the following advantages or beneficial effects: This invention provides an adjustable composite slab joint sealing template structure to prevent grout leakage. It adopts a modular template and a connecting plate for flexible assembly. The modular structure design replaces the traditional integral long plate structure of the template, allowing for rapid formwork erection and disassembly in stages and sections, making construction more labor-saving and safer. It can flexibly adapt to the formwork sealing requirements of different lengths of slab joints. The modular template is a multi-module combination structure, which facilitates the replacement of single module structures and avoids the overall scrapping of traditional templates due to deformation. The cooperation and assembly of the modular template and the connecting plate can not only ensure the basic sealing performance between multiple sealing plates and the slab joints, but also independently adjust the sealing effect of a single sealing plate on the slab joint, avoiding local grout leakage. This can compensate for the drawbacks of grout leakage caused by poor flatness at the bottom of the precast base plate or slight local deformation of the sealing plate. In addition, the modular template itself can suppress impact deformation through buffering and can also prevent grout leakage through dynamic tight sealing. Attached Figure Description

[0019] The invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings, which are not intentionally drawn to scale; the focus is on illustrating the spirit of the invention.

[0020] Figure 1 This is a three-dimensional structural diagram of an adjustable composite slab joint sealing template structure that prevents grout leakage;

[0021] Figure 2 This is a three-dimensional structural diagram of an adjustable composite slab joint sealing template structure for preventing grout leakage, viewed from another perspective.

[0022] Figure 3 It is a three-dimensional sectional view of the assembly and mating of the module template and the suspension components;

[0023] Figure 4 It is a three-dimensional structural diagram of the supporting base plate;

[0024] Figure 5 This is a three-dimensional sectional view of the buffer bracket;

[0025] Figure 6 This is a three-dimensional structural diagram of the base plate;

[0026] Figure 7 This is a 3D structural diagram of the sealing plate.

[0027] In the diagram: 1. Support plate; 11. Guide hole; 12. Screw hole; 13. Slot; 2. Buffer bracket; 21. Base plate; 211. Guide post; 212. Adjusting screw; 22. Support plate; 221. Limiting guide rod; 23. Buffer pad; 24. Disc spring; 3. Sealing plate; 31. Side guard; 4. Connecting plate; 5. Suspension assembly; 51. Hanging rod; 52. Pallet nut; 53. Overlap strip; 54. Connecting rod; 6. Precast base plate. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 1 and Figure 2 As shown, an adjustable composite slab joint sealing template structure for preventing grout leakage includes modular templates, a butt plate 4, and a suspension component 5. The butt plate 4 is used to be installed between the modular templates to form a bottom template. The suspension component 5 is used to be horizontally overlapped on the precast bottom plates 6 on both sides of the joint and to suspend the bottom template so that the bottom template seals the lower end of the joint.

[0031] like Figure 2 and Figure 3 As shown, the modular template includes a supporting base plate 1, a buffer bracket 2, and a sealing plate 3. It is a multi-module assembled template structure. Compared with the existing integral long plate structure template, the modular template is a short template structure. In order to facilitate flexible docking and assembly between multiple modular templates, modular templates of various lengths can be prefabricated, such as 1m, 1.5m, or 2m in length.

[0032] like Figure 3 and Figure 4 As shown, the supporting base plate 1 has a H-shaped plate structure; three sets of guide holes 11 are evenly distributed along the length direction of the supporting base plate 1, with two guide holes 11 in each set, and the two guide holes 11 in each set are distributed along the width direction of the supporting base plate 1; slots 13 are symmetrically provided at both ends along the length direction of the supporting base plate 1, and the slots 13 are grooved along the width direction of the supporting base plate 1; screw holes 12 are also provided on the supporting base plate 1.

[0033] like Figure 3 and Figure 5As shown, the buffer bracket 2 includes a base plate 21, a support plate 22, a buffer pad 23, and a disc spring 24. Six guide posts 211 are welded to the bottom of the base plate 21, and the guide posts 211 are vertically and slidingly installed in the guide holes 11. An adjusting screw 212 is vertically and rotatably installed at the bottom of the base plate 21, and the adjusting screw 212 is threaded into the screw hole 12. When the base plate 21 is installed on the support base plate 1, the guide posts 211 are aligned with the guide holes 11, the adjusting screw 212 is passed through the screw hole 12, and the adjusting screw 212 is turned to move the base plate 21 until it is in contact with the support base plate 1, and the base plate 21 is in the reference position.

[0034] like Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the guide post 211 has a through hole along its central axis; the buffer pad 23 is made of rubber and is fixed to the upper end of the base plate 21 by screws; a disc spring 24 is placed at the top of each guide post 211 on the upper end of the base plate 21; six limiting guide rods 221 are welded to the lower end of the support plate 22, and the limiting guide rods 221 are vertically and slidably installed in the through holes of the guide posts 211, and the disc springs 24 are sleeved on the limiting guide rods 221; the limiting guide rods 221 are threaded, and nuts are installed on the limiting guide rods 221. By turning the nuts, the... The support plate 22 is pressed against the buffer pad 23, and the disc spring 24 is clamped between the support plate 22 and the base plate 21. The support plate 22 and the base plate 21 are vertically sliding and limited in their installation. The limit guide rod 221 continues to slide downward only when the buffer pad 23 and the disc spring 24 are further compressed, and the support plate 22 can be lowered. The compressible stroke of the disc spring 24 itself determines the micro-movement descent height of the support plate 22. The sealing plate 3 is placed horizontally on the support plate 22. The sealing plate 3 has side guards 31 on both sides that are clamped between the two sides of the support plate 22 for simple installation and positioning.

[0035] To reduce the overall weight of the buffer bracket 2, the support plate 22, the buffer pad 23, and the base plate 21 are all of the H-shaped plate structure. The disc spring 24 and the buffer pad 23 are used together as an elastic buffer interlayer, which can improve the stability of the buffer support between the support plate 22 and the base plate 21, and the disc spring 24 itself can adaptively adjust the elastic force. In addition, multiple disc springs 24 are indirectly supported and contacted with the sealing plate 3 through the support plate 22, which can improve the uniformity of the support force distribution, thereby avoiding the deformation of the sealing plate 3 due to local stress concentration.

[0036] The modular template adopts a multi-module assembly design. When a single module structure is deformed, the corresponding module structure can be replaced accordingly, avoiding the overall scrapping of the template due to deformation, and also facilitating repair and maintenance.

[0037] like Figure 1 , Figure 2 and Figure 3 As shown, the connecting plate 4 has an I-beam structure and is used to insert into the slots 13 of the two supporting base plates 1 to achieve the docking installation of the two module templates. When the connecting plate 4 is installed between the two supporting base plates 1, the two sealing plates 3 overlap on the upper end of the connecting plate 4 and abut against each other at opposite ends, so that the sealing plates 3 in multiple module templates can be spliced ​​to ensure the continuity of sealing the plate joints. The use of multiple sealing plates 3 in combination for sealing avoids the defect of large downward deflection deformation in long-span support structures.

[0038] like Figure 1 , Figure 2 and Figure 3 As shown, the suspension assembly 5 includes a hanger 51 that can vertically pass through the module template or the docking plate 4; the top of the hanger 51 is horizontally welded with an overlap strip 53, the hanger 51 and the overlap strip 53 form a T-shape, and the overlap strip 53 can horizontally overlap the precast base plate 6 on both sides of the plate joint; the lower end of the hanger 51 is threadedly fitted with a tray nut 52 for supporting the bottom of the base plate 1 (the tray nut 52 refers to a nut with a supporting disc welded on it). It should be noted that, in order to avoid delamination between the post-cast concrete and the precast base slab 6, the overlapping surface of the upper end of the precast base slab 6 will be roughened, that is, the overlapping surface of the precast base slab 6 will be uneven. In order to ensure that all the lap strips 53 can overlap horizontally at the same height between the two precast base slabs 6, thereby ensuring the sealing effect of the bottom formwork on the lower end of the slab joint, two connecting rods 54 can be installed in series between multiple lap strips 53. The hanger 51, lap strips 53 and connecting rods 54 will be cast in the post-cast strip of the slab joint. The connecting rods 54 can be replaced by steel bars that match the connecting holes in the lap strips 53. Steel bars of appropriate length can be cut on site as needed to be used as connecting rods 54.

[0039] like Figure 1 and Figure 2 As shown, each docking plate 4 and each module template requires a corresponding hanger 51 to be assembled. The hanger 51 passes vertically through the center of the docking plate 4 or the center of the module template. To facilitate on-site assembly and disassembly, the docking plate 4 is disconnected in the insertion direction, and the disconnection seam passes through the through hole of the hanger 51.

[0040] When sealing the joints of the slabs, select the appropriate size of the template for assembly according to the length of the joint, and select the appropriate number of connecting plates 4 and hangers 51. The specific construction process is as follows.

[0041] First, multiple overlapping strips 53 are overlapped on the precast base plates 6 on both sides of the joint and connected by two connecting rods 54. Next, multiple alternately distributed hangers 51 are inserted through the assembly module template, and the pallet nuts 52 are initially tightened. Then, mating plates 4 are inserted and installed between adjacent supporting base plates 1. During insertion, the hangers 51 that cooperate with the mating plates 4 are moved to pass through the mating plates 4. Then, all the pallet nuts 52 are tightened, causing the base template to be lifted by the suspension assembly 5, and multiple sealing plates 3 are used to seal and adhere tightly to the lower end of the joint. Subsequently... Observe the fit between each sealing plate 3 and the lower end of the precast base plate 6. When there is a relatively obvious light-transmitting gap between the sealing plate 3 and the precast base plate 6, the adjusting screw 212 of the corresponding module template can be turned to drive the base plate 21 to move slightly upward, so that the disc spring 24 adaptively adjusts its elasticity, and the sealing plate 3 is further pressed against the lower end of the precast base plate 6 through the support plate 22, so as to independently adjust the sealing effect of a single sealing plate 3 on the plate joint, avoid local grout leakage, and thus make up for the shortcomings of grout leakage caused by poor flatness or slight local deformation of the sealing plate 3 at the lower end of the precast base plate 6.

[0042] After sealing the joints, a steel reinforcement skeleton for the post-cast strip can be formed between the embedded steel bars of the two precast base slabs 6, using hangers 51, lap strips 53, and connecting rods 54. Finally, the composite slab concrete is poured. During the pouring process, the buffer bracket 2 can withstand the impact from the concrete pouring and vibration through the sealing plate 3, and can achieve buffering to avoid impact deformation. In addition, the disc spring 24, together with the buffer pad 23, can dynamically adjust the tightness between the sealing plate 3 and the precast base slab 6 to avoid grout leakage.

[0043] When dismantling the formwork, first loosen the tray nuts 52 under the connecting plate 4 one by one, then pull the connecting plate 4 out between the two supporting base plates 1. Then, loosen the tray nuts 52 under the template one by one, and immediately remove the template after loosening the tray nuts 52. This allows for the rapid dismantling of the formwork structure in stages and sections. Moreover, each module structure is lighter in weight during both the formwork erection and dismantling process, which facilitates disassembly and assembly operations, reduces the safety risks of construction, and reduces the probability of deformation of the template structure during disassembly and assembly. In addition, it is also convenient for transfer and transportation.

[0044] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0045] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a manner common to the art; any possible variations and modifications made by those skilled in the art without departing from the technical solution of the present invention, or equivalent embodiments with equivalent changes, do not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. An adjustable composite slab joint sealing template structure for preventing grout leakage, characterized in that, include: The modular template includes a supporting base plate, a buffer bracket, and a sealing plate. The buffer bracket is vertically slidably installed on the upper part of the supporting base plate, and the height of the buffer bracket relative to the supporting base plate can be adjusted; the sealing plate is detachably installed on the top of the buffer bracket and used to seal the lower end of the precast base plate joint. The mating plate is used for detachable installation between the support base plates of two module templates to form the bottom template; And a suspension assembly, used to horizontally overlap the precast base plates on both sides of the slab joint and suspend the bottom formwork; when the suspension assembly suspends the bottom formwork and seals the sealing plate at the lower end of the slab joint, the height of the buffer bracket can be adjusted to independently seal the sealing plate against the bottom end of the precast base plates on both sides of the slab joint, and the buffer bracket provides buffer support between the sealing plate and the supporting base plate; An adjusting screw is vertically and rotatably mounted on the bottom end of the base plate; a screw hole that mates with the adjusting screw is provided on the supporting base plate; The buffer bracket includes a base plate that is vertically slidably mounted on a support base plate and whose height is adjustable; a support plate is vertically slidably mounted above the base plate; and a buffer pad and multiple disc springs are assembled between the support plate and the base plate.

2. The adjustable composite slab joint sealing template structure for preventing grout leakage according to claim 1, characterized in that: When the mating plates are installed between two supporting base plates, the two sealing plates overlap on the upper part of the mating plates and their opposite ends abut against each other.

3. The adjustable composite slab joint sealing template structure for preventing grout leakage according to claim 1, characterized in that: The base plate has multiple guide posts at its bottom end; the supporting base plate has multiple guide holes for vertical sliding cooperation of the multiple guide posts.

4. The adjustable composite slab joint sealing template structure for preventing grout leakage according to claim 3, characterized in that: The bottom end of the support plate is vertically fixed with multiple limiting guide rods; the limiting guide rods and guide posts are vertically connected and slidably engaged; disc springs are sleeved on the limiting guide rods.

5. The adjustable composite slab joint sealing template structure for preventing grout leakage according to claim 1, characterized in that: The supporting base plate has symmetrical slots at both ends, and the extension direction of the slots is perpendicular to the opposite direction of the two ends where the slots are located; the mating plate is inserted into the slots at the opposite ends of the two supporting base plates; the mating plate is disconnected in the insertion direction.

6. The adjustable composite slab joint sealing template structure for preventing grout leakage according to claim 1, characterized in that: The suspension assembly includes a hanger rod that can vertically pass through the module template or the connecting plate; the top of the hanger rod is fixed with an overlap strip that can horizontally overlap the precast base plate on both sides of the plate joint; and the lower end of the hanger rod is threadedly fitted with a tray nut for supporting the bottom of the base plate.

7. The adjustable composite slab joint sealing template structure for preventing grout leakage according to claim 6, characterized in that: At least one connecting rod is installed in series between multiple overlapping strips.

8. The adjustable composite slab joint sealing template structure for preventing grout leakage according to claim 2, characterized in that: The sealing plate has side retaining edges on both sides that are fitted between the two sides of the support plate.

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