A detach-free bottom film steel bar truss floor support plate splicing joint and a construction method thereof

Abstract

The application relates to the construction technology field of steel bar truss floor support plates, in particular to a dismounting-free bottom film steel bar truss floor support plate splicing joint and a construction method thereof. The dismounting-free bottom film steel bar truss floor support plate splicing joint comprises a first floor support plate, a second floor support plate and a fixing assembly. The inner side of the first floor support plate is provided with an inserting groove, the inside of the inserting groove is provided with a moving block with a sharp end one and a bag one, the two sides of the inserting groove are provided with guide grooves, the guide grooves are provided with guide rods connected with built-in springs, the outer side of the first floor support plate is provided with an inserting block, the side surface of the inserting block is provided with an inserting hole, the fixing assembly comprises a shell, a moving rod and a connecting arm, the bottom end of the moving rod is provided with a sharp end two, the lower part of the moving rod is provided with a bag two, the bottom of the shell is provided with an output port, the shell and the bottom end of the moving rod are provided with magnets with opposite magnetism, the dismounting-free bottom film steel bar truss floor support plate splicing joint and the construction method thereof are used for triggering the moving block to pierce the bag one through the inserting block, the colloid covers the lower half of a splicing joint, the moving rod pierces the bag two to cover the upper half of the splicing joint, double colloid filling ensures complete sealing of a gap, and the guide rods are inserted into the inserting hole to form rigid constraints.

Description

TECHNICAL FIELD

[0001] The application relates to the construction technology field of steel bar truss floor support plates, in particular to a dismounting-free bottom film steel bar truss floor support plate splicing joint and a construction method thereof. BACKGROUND

[0002] In prefabricated buildings, the dismounting-free bottom film steel bar truss floor support plate is widely used due to its fast construction advantage, but the sealing of the splicing joint has always been a technical difficulty. The existing splicing sealing technology mostly relies on air bag pressurization filling, for example, the floor support plate joint disclosed in patent CN118815047B, after the splicing block and the splicing groove are mechanically positioned, the sealing air bag is inflated to realize the sealing of the splicing joint. Although this scheme simplifies the installation steps, it has the following defects:

[0003] Insufficient sealing reliability: the air bag relies on continuous inflation pressure to maintain sealing, and construction vibration or temperature change easily leads to air leakage failure, and there is a leakage risk;

[0004] Poor adaptability to complex gaps: the air bag is difficult to completely fill the uneven or micro-crack area, and air gaps are easily left;

[0005] High maintenance cost: the air pressure of the air bag needs to be checked regularly, increasing the later maintenance burden.

[0006] In addition, in the traditional air bag scheme, the locking and sealing functions are separated, and in the patent CN118815047B, the locking rod and the air bag are independently arranged, which leads to complicated construction procedures, and the coordination between the mechanical locking and the air bag sealing is poor, and under the impact of concrete pouring, the splicing joint is easily dislocated.

[0007] Therefore, the application provides a dismounting-free bottom film steel bar truss floor support plate splicing joint and a construction method thereof. SUMMARY

[0008] One of the technical problems to be solved by the application is that the existing technology has the following defects: insufficient sealing reliability: the air bag relies on continuous inflation pressure to maintain sealing, and construction vibration or temperature change easily leads to air leakage failure, and there is a leakage risk;

[0009] Poor adaptability to complex gaps: the air bag is difficult to completely fill the uneven or micro-crack area, and air gaps are easily left;

[0010] High maintenance cost: the air pressure of the air bag needs to be checked regularly, increasing the later maintenance burden.

[0011] To solve the above technical problems, the application provides a dismounting-free bottom film steel bar truss floor support plate splicing joint and a construction method thereof, which comprises a first floor support plate, a second floor support plate and a fixing assembly,

[0012] The splicing groove is arranged on the inner side of the first floor support plate, and the splicing groove is internally provided with a moving block with a sharp end one and a bag one.

[0013] The guide slot is provided with a guide rod connected by a spring on both sides;

[0014] The first floor support plate is provided with a plug-in block, and a plug-in hole is formed in the side surface of the plug-in block;

[0015] The fixing assembly comprises a shell, a moving rod, and a connecting arm, the bottom end of the moving rod is provided with a sharp end two, a lower bag two is arranged, an output port is arranged at the bottom of the shell, and the shell and the bottom end of the moving rod are provided with magnets with opposite magnetism.

[0016] In some embodiments, the diameter of the guide rod is less than 0.1mm from the gap of the plug-in hole, and the pre-pressing stroke of the spring is 5-8mm.

[0017] In some embodiments, the bag one and the bag two are both made of PLA degradable film, and modified epoxy sealant is filled in the bag.

[0018] In some embodiments, a hook ring is arranged at the end of the connecting arm, the hook ring is an elastic steel ring with adjustable spacing, the inner diameter of the hook ring is 2mm larger than the outer diameter of the lower chord, a hole is arranged at the top of the shell for the moving rod to pass through, holes are arranged on the two side surfaces of the shell for the connecting arm to pass through, and a space is arranged in the shell to accommodate the moving rod.

[0019] In some embodiments, a connecting rod is arranged in the fixing assembly, and the connecting rod is hingedly connected with a side plate one and a side plate two through a shaft one and a shaft two respectively.

[0020] The output port is in the form of an annular gap structure with a width of 1.5mm, and surrounds the lower side of the bag two.

[0021] In some embodiments, the first floor support plate and the second floor support plate have the same structure, and the upper surface of the first floor support plate is provided with a steel bar truss composed of an upper chord, an inner lower chord, an outer lower chord, and a web bar, to serve as a steel reinforcement framework during pouring of concrete.

[0022] A limiting hole is arranged on the inner wall of the plug-in slot, and the size of the limiting hole matches the size of the sharp end one.

[0023] In some embodiments, a disassembly-free bottom film steel bar truss floor support plate splicing node construction method comprises the following steps:

[0024] S1: bottom plate pretreatment;

[0025] S11: check and position, clean the splicing surface of the adjacent floor support plate, and ensure that there is no sundries;

[0026] S12: pre-install the assembly, pre-install the modified epoxy sealant bag in the plug-in slot, and adjust the hook ring of the fixing assembly connecting arm to match the spacing of the lower chord steel bar of the steel bar truss;

[0027] S2: lower layer plug-in and sealing;

[0028] S21: Guiding and inserting, aligning the second floor support plate insertion block with the first floor support plate insertion slot and inserting along the insertion slot direction;

[0029] S22: Triggering sealing, the insertion block pushing the moving block sharp end to pierce the capsule bag 1, and the gel flowing into the lower half of the joint gap;

[0030] S23: Mechanical locking, the guide rod is inserted into the insertion hole of the insertion block, and the spring provides a reverse pre-tightening force;

[0031] S3: Upper sealing and reinforcement;

[0032] S31: Installing the fixed component, placing the fixed component across the joint gap, and hooking the two connecting arms to the lower chord steel bars of the two side steel trusses;

[0033] S32: Linkage sealing, pressing down the fixed component moving rod to make the sharp end 2 pierce the capsule bag 2, and the modified epoxy sealant covers the upper half of the joint gap and the surface;

[0034] S33: Synchronous tensioning, at the moment when the modified epoxy sealant is released, the moving rod pulls the two connecting arms to tighten, and the joint gap is eliminated;

[0035] S4: Curing and acceptance;

[0036] S41: Static curing, static curing at an ambient temperature of 25℃ for 8-10 minutes;

[0037] S42: Sealing detection, checking the gel filling integrity with a probe, focusing on detecting the four corners of the joint gap, and supplementing quick-setting glue at the leakage points;

[0038] S43: Structure review, knocking the fixed component to confirm that there is no looseness, and measuring the joint gap width to be less than or equal to 0.3mm;

[0039] S5: Concrete pouring, pouring concrete within hours after acceptance, and the operation distance of the vibrating rod is greater than 350mm from the joint gap.

[0040] In some embodiments, the trigger force of the insertion block piercing the capsule bag 1 in S23 is 50-70N, and the gel fills more than 90% of the volume of the lower part of the joint gap.

[0041] In some embodiments, the displacement amount of the connecting arm tightening in S33 is 3-5mm, and the pressure of the hook ring clamping the inside lower chord and the outside lower chord is greater than 0.5MPa.

[0042] In some embodiments, the gel curing ambient temperature in S41 is 20-30℃, the initial setting time is 8-10 minutes, and the final setting time is less than 30 minutes.

[0043] The present application at least has the following beneficial effects:

[0044] 1. The mobile block is triggered by the insertion block to pierce the bag 1, and the colloid covers the lower half of the joint gap; the mobile rod pierces the bag 2 to cover the upper half of the joint gap, and the double colloid filling ensures complete sealing of the gap. The guide rod is inserted into the insertion hole to form a rigid constraint, the mobile rod is fixed by magnet adsorption, and the lower chord steel bar is tensioned by cooperating with the hook and loop to eliminate the risk of joint displacement. At the same time, bag 1 and bag 2 are made of degradable materials, and there is no residual pollution after pouring.

[0045] 2. The sealing and locking are triggered synchronously by the insertion action, that is, the guide rod is inserted and the colloid is released; the upper sealing and steel bar tensioning are completed by pressing the mobile rod linkage, which simplifies the construction steps. After the colloid solidifies, the filling integrity is directly accepted, avoiding the failure risk of traditional air bags that need to maintain air pressure. By using adjustable hook and loop, different steel bar spacing can be adapted, and spring pre-tightening compensates for the size deviation of insertion. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0047] Figure 2 It is a top view of the overall structure of the present application;

[0048] Figure 3 It is a schematic diagram of the first floor support plate structure;

[0049] Figure 4 It is a sectional view of the first floor support plate;

[0050] Figure 5 It is a side view of the first floor support plate;

[0051] Figure 6 It is Figure 5 the section view at A-A;

[0052] Figure 7 It is a schematic diagram of the fixed assembly structure of the present application;

[0053] Figure 8 It is a sectional view of the fixed assembly;

[0054] Figure 9 It is a sectional view of the fixed assembly;

[0055] Figure 10 It is a schematic diagram of the construction method steps of the present application;

[0056] Figure 11 It is a schematic diagram of the construction method S1 of the present application;

[0057] Figure 12 It is a schematic diagram of the construction method S2 of the present application;

[0058] Figure 13 It is a schematic diagram of the construction method S3 of the present application;

[0059] Figure 14 The step schematic diagram of the construction method S4 of the present application.

[0060] In the figure: 100-first floor support plate; 101-upper chord; 102-inner lower chord; 103-outer lower chord; 104-web bar; 105-insertion slot; 1051-moving block; 1052-guide rod; 1053-guide slot; 1054-spring; 1055-tip one; 1056-bag one; 1057-limiting hole; 106-insertion block; 1061-insertion hole; 200-second floor support plate; 300-fixing assembly; 301-outer shell; 302-moving rod; 303-connecting arm; 304-hook; 305-space; 306-side plate one; 307-connecting rod; 308-side plate two; 309-tip two; 310-bag two; 311-output port; 312-shaft one; 313-shaft two. DETAILED DESCRIPTION

[0061] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0062] Embodiment 1, please refer to Figures 1-10 The present application provides a technical solution: a disassembly-free bottom film steel bar truss floor support plate splicing node, comprising a first floor support plate 100, a second floor support plate 200 and a fixing assembly 300,

[0063] The insertion slot 105 is arranged on the inner side of the first floor support plate 100, and the insertion slot 105 is internally provided with a moving block 1051 with a tip one 1055 and a bag one 1056;

[0064] The insertion slot 105 is arranged on the inner side of the first floor support plate 100, and the insertion slot 105 is internally provided with a moving block 1051 with a tip one 1055 and a bag one 1056;

[0065] The insertion slot 105 is arranged on the inner side of the first floor support plate 100, and the insertion slot 105 is internally provided with a moving block 1051 with a tip one 1055 and a bag one 1056;

[0066] The fixing assembly 300 comprises an outer shell 301, a moving rod 302 and a connecting arm 303, the bottom end of the moving rod 302 is provided with a tip two 309, the bottom is provided with a bag two 310, the bottom of the outer shell 301 is provided with an output port 311, and the outer shell 301 and the bottom end of the moving rod 302 are provided with magnets with opposite magnetism.

[0067] Specifically, the purpose of this design is that the insertion block 106 pushes the moving block 1051 to trigger the seal, the insertion block 106 is inserted into the insertion slot 105 to push the moving block 1051, the tip 1 1055 of the moving block 1051 pierces the bag 1 1056 to release the lower part of the colloid seal joint, and the artificial inflation step is eliminated.

[0068] The guide rod 1052 and the insertion hole 1061 form a rigid lock, the spring 1054 pushes the guide rod 1052 to insert into the insertion hole 1061 of the insertion block 106, and the two floor plates are mechanically interlocked to prevent the joint from being misaligned.

[0069] The moving rod 302 has a dual-function linkage, when the moving rod 302 is pressed down, the tip 2 309 pierces the bag 2 310 to cover the upper part of the joint, and at the same time, the moving rod 302 pulls the connecting arm 303 through the connecting rod 307 to tighten the lower inner chord 102 and the lower outer chord 103.

[0070] The magnets are attracted to prevent displacement, the bottom magnet of the moving rod 302 is magnetically attracted to the bottom magnet of the shell 301, the position of the moving rod 302 is fixed to avoid rebound, and the continuous seal is ensured.

[0071] The degradable bag is environmentally friendly, the bag 1 1056 and the bag 2 310 are made of degradable materials, and the bag naturally decomposes after the colloid solidifies, without architectural pollution.

[0072] Embodiment 2, please refer to Figures 1-9 The diameter of the guide rod 1052 and the gap between the insertion hole 1061 are less than 0.1 mm, and the pre-pressing stroke of the spring 1054 is 5-8 mm. The bag 1 1056 and the bag 2 310 are made of PLA degradable film, and are filled with modified epoxy potting glue. The connecting arm 303 is provided with a hook 304, and the hook 304 is an elastic steel ring with adjustable spacing, and the inner diameter of the hook 304 is 2 mm larger than the outer diameter of the lower chord;

[0073] The top of the shell 301 is provided with a hole for the moving rod 302 to pass through, the two sides of the shell 301 are provided with holes for the connecting arm 303 to pass through, and the inside of the shell 301 is provided with a space 305 for accommodating the moving rod 302.

[0074] Specifically, the purpose of this design is that the gap between the guide rod 1052 and the insertion hole 1061 is less than 0.1 mm to ensure that there is no deviation during insertion, and the joint shear capacity is improved.

[0075] The pre-pressing stroke of the spring 1054 is 5-8 mm to provide stable pre-tightening force, and the guide rod 1052 is inserted into the insertion hole 1061 in time.

[0076] The bag 1 1056 and the bag 2 310 are packaged with modified epoxy potting glue by using PLA degradable film, and there is no residual pollution after the colloid is released.

[0077] The hook ring 304 is an adjustable spacing elastic steel ring, the inner diameter of which is 2 mm larger than the outer diameter of the lower chord.

[0078] The top of the shell 301 is provided with a moving rod 302 passing hole, and both sides are provided with a connecting arm 303 passing hole. The internal space 305 accommodates the movement track of the moving rod 302, forming a compact linkage space 305.

[0079] Embodiment 3, see Figures 1-9 The fixed assembly 300 is provided with a connecting rod 307, which is hinged with a side plate one 306 and a side plate two 308 through a shaft one 312 and a shaft two 313, respectively.

[0080] The output port 311 is a ring gap structure with a width of 1.5 mm, which surrounds the lower side of the bag two 310.

[0081] Specifically, the purpose of such design is that the connecting rod 307 is hinged with the side plate one 306 and the side plate two 308 through the shaft one 312 and the shaft two 313. When the moving rod 302 is pressed down, it synchronously drives the two side plates to translate outward, evenly dispersing the steel bar tensioning force.

[0082] The output port 311 is a ring gap structure with a width of 1.5 mm, which surrounds the lower side of the bag two 310.

[0083] Embodiment 4, see Figures 1-9 The first floor slab 100 and the second floor slab 200 have the same structure. The upper surface of the first floor slab 100 is provided with a steel truss composed of the upper chord 101, the inner lower chord 102, the outer lower chord 103, and the web bar 104, which serves as a steel framework during concrete pouring.

[0084] The inner wall of the insertion slot 105 is provided with a limiting hole 1057, the size of which matches the size of the sharp end one 1055.

[0085] Specifically, the purpose of such design is that the first floor slab 100 and the second floor slab 200 adopt the same structure design, and the upper chord 101, the inner lower chord 102, and the outer lower chord 103, and the web bar 104 form a standard truss. When installed interchangeably, the direction restriction is eliminated, and the splicing efficiency is improved.

[0086] The size of the limiting hole 1057 matches the size of the sharp end one 1055 of the moving block 1051, which limits the displacement of the moving block 1051 in the non-operation state, avoiding accidental puncture of the bag one 1056 by transportation vibration.

[0087] The upper chord 101, the inner lower chord 102, the outer lower chord 103 and the web bar 104 cooperatively form a three-dimensional framework, which directly serves as a reinforcement cage during pouring of concrete, thereby eliminating the on-site binding process.

[0088] Embodiment 5, see Figures 10-14 A construction method of a detachable bottom film steel bar truss floor slab splicing joint, comprising the following steps:

[0089] S1: bottom plate pretreatment;

[0090] S11: check and position, clean the adjacent floor slab splicing surface to ensure no sundries;

[0091] S12: pre-assemble components, pre-assemble modified epoxy injection capsules in the insertion slot 105, and adjust the hook ring 304 of the connecting arm 303 of the fixed component 300 to match the spacing of the lower chord steel bars of the steel bar truss;

[0092] S2: lower layer insertion and sealing;

[0093] S21: guided insertion, align the insertion block 106 of the second floor slab 200 with the insertion slot 105 of the first floor slab 100, and insert along the direction of the insertion slot 105;

[0094] S22: trigger sealing, the sharp end one 1055 of the moving block 1051 is pierced by the capsule bag one 1056 by the insertion block 106, and the glue flows into the lower half of the joint;

[0095] S23: mechanical locking, the insertion hole 1061 of the insertion block 106 is inserted by the guide rod 1052, and the spring 1054 provides a reverse pre-tightening force;

[0096] S3: upper layer sealing and reinforcement;

[0097] S31: install the fixed component 300, place the fixed component 300 across the joint, and hang the hook rings 304 of the two connecting arms 303 on the lower chord steel bars of the two sides of the steel bar truss;

[0098] S32: linkage sealing, press down the moving rod 302 of the fixed component 300 to make the sharp end two 309 pierce the capsule bag two 310, and the modified epoxy injection covers the upper half of the joint and the surface;

[0099] S33: synchronous tensioning, at the moment of release of the modified epoxy injection, the moving rod 302 pulls the two connecting arms 303 to tighten, and eliminates the joint gap;

[0100] S4: curing and acceptance;

[0101] S41: static curing, static curing at an ambient temperature of 25°C for 8-10 minutes;

[0102] S42: Seal detection, probe to check the integrity of the colloidal filling Focus on detecting the four corners of the joint, leakage point coating fast gel;

[0103] S43: Structure review, knock fixed component 300 to confirm no loose, measure the joint width ≤0.3mm;

[0104] S5: Concrete pouring, pouring concrete within 24 hours after acceptance, the operation distance of the vibration rod joint > 350mm.

[0105] Specifically, the purpose of this design is that S21 guided plug-in precise positioning, plug-in block 106 and plug-in slot 105 ensure the initial positioning accuracy of two floor slabs, and avoid manual calibration error.

[0106] S23 linkage sealing and locking is completed synchronously, the insertion of the plug-in block 106 triggers the tip 1055 to pierce the capsule bag 1056, and the colloidal filling fills the lower half of the joint; At the same time, the spring 1054 pushes the guide rod 1052 to insert into the plug-in hole 1061, forming a rigid constraint.

[0107] S32 double function integration of moving rod 302, when the moving rod 302 is pressed down, the tip 309 pierces the capsule bag 310 to cover the upper part of the joint, and synchronously pulls the inner and outer lower chord 102 and 103 through the connecting arm 303 to eliminate the gap.

[0108] S33 colloidal solidification and tensioning cooperation, modified epoxy pouring sealant generates viscous resistance in the flow moment, enhancing the tightening effect of the connecting arm 303 on the inner and outer lower chord 102 and 103.

[0109] S42 joint four corners reinforced detection, probe focuses on detecting the sealing integrity of the four corners, and targetedly supplements the glue to ensure the closed-loop anti-seepage system.

[0110] S43 structure instant acceptance, knock fixed component 300 to verify no loose, realize seamless connection of process.

[0111] Example 6, see Figures 10-14 , the trigger force of the plug-in block 106 piercing the capsule bag 1056 in S23 is 50-70N, and the colloidal filling volume of the lower part of the joint is greater than 90%. In S33, the tightening displacement of the connecting arm 303 is 3-5mm, and the pressure of the hook and loop 304 clamping the inner and outer lower chord 102 and 103 is greater than 0.5MPa. In S41, the colloidal solidification environment temperature is 20-30℃, the initial setting time is 8-10 minutes, and the final setting time is less than 30 minutes.

[0112] Specifically, the purpose of this design is that S23 trigger force is accurately controlled, the trigger force of the plug-in block 106 piercing the capsule bag 1056 is set to 50-70N, ensuring controllability of manual operation, and the colloidal filling volume of the lower part of the joint is more than 90% to eliminate the risk of cavity leakage.

[0113] The S33 hook and 304 provide strong restraint, and the connecting arm 303 tightens by 3-5mm, simultaneously generating a clamping pressure greater than 0.5MPa, so that the inner lower chord 102 and the outer lower chord 103 form a mechanical interlock to resist the impact of concrete pouring.

[0114] S41 colloidal aging adaptation construction, initial setting time of 8-10 minutes in 20-30℃ environment provides ample operating window, final setting time less than 30 minutes, maintain the 303 tension of the connecting arm until the structure is stable.

[0115] The following is combined with Figures 1-9 This section describes the construction process of this splicing node:

[0116] First, prepare a first floor deck 100 and a second floor deck 200, aligning the insertion slot 105 of the first floor deck 100 with the insertion block 106 of the second floor deck 200. Then, splice the first floor deck 100 and the second floor deck 200, that is, the insertion block 106 of the second floor deck 200 presses inward toward the insertion slot 105 of the first floor deck 100. The insertion block 106 of the second floor deck 200 pushes the moving block 1051 of the first floor deck 100 inward. The tip 1055 in front of the moving block 1051 of the first floor deck 100 moves forward until it punctures the bladder 1056 before the tip 1055, and the modified epoxy in the bladder 1056 is potted. The adhesive flows out and covers the lower half of the joint between the first floor deck 100 and the second floor deck 200. At this time, the moving block 1051 is pressed inward until the tip 1055 of the moving block 1051 moves into the limiting hole 1057. At the same time, as the moving block 1051 moves inward, the guide rod 1052, which was originally supported on the side of the moving block 1051, tends to extend out of the guide groove 1053 because the spring 1054 changes from the compressed state to the extended state. When the tip 1055 of the moving block 1051 enters the limiting hole 1057, the insertion hole 1061 of the insertion block 106 is just aligned with the guide groove 1053. At this time, the guide rod 1052 enters the insertion hole 1061 to complete the snap-fit ​​action.

[0117] Then the inside lower chord 102 of the first floor support plate 100 and the outside lower chord 103 of the second floor support plate 200 on both sides of the joint between the first floor support plate 100 and the second floor support plate 200 are provided with the fixed assembly 300, that is, the shackle 304 of the connecting arm 303 of the fixed assembly 300 hooks the inside lower chord 102 of the first floor support plate 100 and the outside lower chord 103 of the second floor support plate 200, then the moving rod 302 is pressed downward, the moving rod 302 moves downward to drive the side plate two 308 to move downward, the side plate two 308 moves downward to drive the shaft two 313 to move downward, the shaft two 313 moves downward to drive the connecting rod 307 to rotate inward, at the same time, the shaft one 312 and the side plate one 306 move inward, at this time, the inside lower chord 102 of the first floor support plate 100 and the outside lower chord 103 of the second floor support plate 200 hooked by the shackle 304 of the connecting arm 303 are clamped, the joint between the first floor support plate 100 and the second floor support plate 200 is further clamped, at the same time, the tip two 309 of the moving rod 302 moves downward to pierce the bag two 310, the modified epoxy pouring sealant in the bag two 310 flows out from the output port 311 to fall on the joint between the first floor support plate 100 and the second floor support plate 200 to complete covering the upper half of the joint between the first floor support plate 100 and the second floor support plate 200, at this time, the joint is sealed due to the infiltration of the modified epoxy pouring sealant in the bag one 1056 and the bag two 310, at this time, the magnet at the bottom of the shell 301 attracts the magnet at the bottom end of the moving rod 302, so that the shackle 304 of the connecting arm 303 always hooks the inside lower chord 102 of the first floor support plate 100 and the outside lower chord 103 of the second floor support plate 200, so that the joint is in a compressed state, and cooperates with the sealing of the modified epoxy pouring sealant in the bag one 1056 and the bag two 310 to greatly enhance the waterproof effect.

[0118] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0119] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, alternatives, and variations can be made thereto without departing from the principles and spirit of the application.

Claims

1. A detachable bottom film steel bar truss floor support plate splicing node, comprising a first floor support plate (100), a second floor support plate (200) and a fixing assembly (300), characterized in that: The first floor support plate (100) is provided with a plug-in slot (105) on the inner side, which is internally provided with a moving block (1051) with a sharp end (1055) and a bag (1056); The plug-in slot (105) is provided with a guide slot (1053) on both sides, and a guide rod (1052) connected with a spring (1054) is arranged inside; The first floor support plate (100) is provided with a plug-in block (106) on the outer side, and a plug-in hole (1061) is formed on the side surface; The fixing assembly (300) comprises a shell (301), a moving rod (302) and a connecting arm (303), the bottom end of the moving rod (302) is provided with a sharp end (309), and the lower side is provided with a bag (310), the bottom of the shell (301) is provided with an output port (311), and the shell (301) and the bottom end of the moving rod (302) are provided with magnets with opposite magnetic properties; The end of the connecting arm (303) is provided with a carabiner (304), the carabiner (304) is an elastic steel ring with adjustable spacing, and the inner diameter of the carabiner (304) is 2mm larger than the outer diameter of the lower chord steel bar; The top of the shell (301) is provided with a hole through which the moving rod (302) passes, the two side surfaces of the shell (301) are provided with holes through which the connecting arm (303) passes, and the inside of the shell (301) is provided with a space (305) for accommodating the moving rod (302); The fixing assembly (300) is provided with a connecting rod (307), and the connecting rod (307) is hingedly connected with a side plate (306) and a side plate (308) through a shaft (312) and a shaft (313) respectively; The output port (311) is a ring-shaped gap structure with a width of 1.5mm, which surrounds the bag (310) directly below.

2. The steel bar truss floor deck panel splicing joint of claim 1, wherein: The diameter of the guide rod (1052) and the gap between the plug-in hole (1061) are less than 0.1mm, and the pre-pressing stroke of the spring (1054) is 5-8mm.

3. The steel bar truss floor deck panel splicing joint of claim 1, wherein: The bag (1056) and the bag (310) are made of PLA degradable film, and modified epoxy sealant is filled inside.

4. The steel bar truss floor deck panel splicing joint of claim 1, wherein: The first floor support plate (100) and the second floor support plate (200) are constructed the same, and the upper surface of the first floor support plate (100) is provided with a steel bar truss composed of an upper chord (101), an inner lower chord (102), an outer lower chord (103) and a web bar (104), which serves as a steel framework during pouring of concrete; The inner wall of the plug-in slot (105) is provided with a limiting hole (1057), and the size of the limiting hole (1057) matches the size of the sharp end (1055).

5. A construction method of a detachable bottom membrane steel bar truss floor support plate splicing joint, based on any one of claims 1-4, characterized in that: The steps include: S1: bottom plate pretreatment; S11: check positioning, clean the splicing surface of the adjacent floor support plate to ensure that there is no debris; S12: pre-assemble the assembly, the plug-in slot (105) is pre-assembled with a modified epoxy sealant bag, and the connecting arm (303) of the fixing assembly (300) is adjusted to match the spacing of the lower chord steel bar of the steel bar truss. S2: Lower layer insertion and sealing; S21: Guiding insertion, aligning the insertion block (106) of the second floor deck (200) with the insertion slot (105) of the first floor deck (100), and inserting along the direction of the insertion slot (105); S23: Triggering sealing, the insertion block (106) pushes the sharp end one (1055) of the moving block (1051) to pierce the bag one (1056), and the glue flows into the lower half of the joint; S23: Mechanical locking, the guide rod (1052) is inserted into the insertion hole (1061) of the insertion block (106), and the spring (1054) provides a reverse pre-tightening force; S3: Upper layer sealing and reinforcement; S31: Installing the fixed component (300), placing the fixed component (300) across the joint, and hanging the hooks (304) of the two connecting arms (303) on the lower chord steel bars of the two side steel trusses; S32: Joint sealing, pressing down the moving rod (302) of the fixed component (300) to make the sharp end two (309) pierce the bag two (310), and the modified epoxy sealant covers the upper half of the joint and the surface; S33: Synchronous tensioning, at the moment when the modified epoxy sealant is released, the moving rod (302) pulls the two connecting arms (303) to tighten, eliminating the joint gap; S4: Curing and acceptance; S41: Static curing, static curing at an ambient temperature of 25°C for 8-10 minutes; S42: Sealing detection, checking the glue filling integrity with a probe, focusing on detecting the four corners of the joint, and supplementing quick-setting glue at the leakage points; S43: Structure review, knocking the fixed component (300) to confirm that there is no looseness, and measuring the joint width ≤0.3mm; S5: Concrete pouring, pouring concrete within 24 hours after acceptance, and the operation distance of the vibrating rod is greater than 350mm from the joint.

6. The construction method of a detachable bottom membrane steel bar truss floor splicing joint according to claim 5, characterized in that: The triggering force of the insertion block (106) piercing the bag one (1056) in S23 is 50-70N, and the glue fills more than 90% of the volume of the lower part of the joint.

7. The construction method of a detachable bottom membrane steel bar truss floor splicing joint according to claim 5, characterized in that: In S33, the displacement amount of the connecting arm (303) tightening is 3-5mm, and the pressure of the hook ring (304) clamping the inside lower chord (102) and the outside lower chord (103) is greater than 0.5MPa.

8. The construction method of a detachable bottom membrane steel bar truss floor splicing joint according to claim 5, characterized in that: In S41, the glue curing environment temperature is 20-30°C, the initial setting time is 8-10 minutes, and the final setting time is less than 30 minutes.

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