A precast concrete double-T slab and composite beam combined structure

Abstract

This invention belongs to the technical field of building floor structure technology, specifically relating to a precast concrete double-T slab and composite beam combined structure. It includes a double-T slab body and composite beams, with multiple composite beams arranged in an array. The front and rear ends of the double-T slab body are placed on two adjacent composite beams, and multiple double-T slab bodies are arranged side-by-side to form a floor structure. The double-T slab body includes a panel and left and right rib beams fixed to the bottom of the panel. This invention facilitates the pouring and connection of the closed groove, thus enabling rapid formation of the entire floor, and also facilitates disassembly. This invention allows for rapid adjustment and alignment of the two double-T slab bodies without contact, and avoids rigid collisions during installation. This invention avoids rigid collisions during the installation of the two double-T slab bodies, while maintaining the sealing of the closed groove between adjacent panels, facilitating subsequent rapid concrete pouring and connection and component disassembly, thus eliminating the need for subsequent formwork operations.

Description

Technical Field

[0001] This invention belongs to the technical field of building floor structure, specifically relating to a combined structure of precast concrete double-T slab and composite beam. Background Technology

[0002] A building floor slab refers to the horizontal structure between different floors in a building. It is usually made of concrete, reinforced concrete, or prestressed concrete and serves to support the upper structure and distribute loads. Double-T slabs are a common type of floor slab, with a double "T" shaped cross-section. They have high load-bearing capacity and large spans, and are widely used in floor slab systems of industrial and large commercial buildings. Double-T slabs are frequently used as a type of floor slab.

[0003] Chinese patent application number 200910028173.3 discloses a prestressed reinforced concrete double-T slab for the construction industry, its formwork, and a production method. The double-T slab includes two ribs and a panel. Lifting holes are provided on both sides of the panel at both ends of the ribs. The formwork includes a template and a prestressed bearing plate. Protrusions corresponding to the lifting holes of the double-T slab are provided on the top plane of the template, on both sides outside the mold groove. Erection end plates are installed at both ends of the mold groove of the template. The erection end plates have reinforcing bar holes, as well as lifting holes, lifting rings, or hooks. The method involves finally connecting the lifting holes, lifting rings, or hooks of the erection end plates with a lifting device, and the double-T slab is lifted out of the formwork along with the erection end plates. This patented prestressed reinforced concrete double-T slab is safe, reliable, and low-cost. The formwork manufacturing cost is low, and the method is efficient and has low production costs.

[0004] When installing double-T slabs as floor slabs, the installation speed can be greatly increased if they can be quickly combined with composite beams. However, the connection between the composite beams and double-T slabs requires a lot of formwork and pouring operations, which makes subsequent operations troublesome. During operation, collisions often occur when the two double-T slabs are joined, resulting in damage. At the same time, when the double-T slabs are tilted, they are usually straightened by manual crane control, which greatly tests the crane operator's skill. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a combined structure of precast concrete double-T slabs and composite beams. Through the structural design of active buffer plates, passive buffer plates, and composite beams, this invention facilitates the pouring and connection of the closed grooves, enabling rapid formation of the overall floor plan, while also facilitating the disassembly of the active and passive buffer plates. The combination of the double-T slab body with active and passive sliding pipes and rods allows for rapid adjustment and alignment without contact between the two double-T slab bodies, preventing rigid collisions during installation. The combination of active and passive sliding pipes and a locking mechanism further prevents rigid collisions during installation while maintaining the seal of the closed grooves between adjacent panels, facilitating rapid concrete pouring and component disassembly, significantly improving efficiency and eliminating the need for subsequent formwork. The limiting mechanism design ensures the rapid disassembly and recycling of the active and passive sliding pipes and rods, while maintaining the stability of the subsequent rib beams and preventing safety accidents.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A precast concrete double-T slab and composite beam combined structure includes a double-T slab body and composite beams, with multiple composite beams arranged in an array. The front and rear ends of the double-T slab body are placed on two adjacent composite beams, and the multiple double-T slab bodies are arranged side by side to form a floor structure. The double-T slab body includes a panel and a left rib beam and a right rib beam fixed at the bottom of the panel. The bottom of the left rib beam and the right rib beam each have two limiting grooves, forming two sets. Each set of limiting grooves is slidably connected to an active sliding tube. The left ends of the two active sliding tubes are fixedly connected to an active buffer plate, and the right ends of the two active sliding tubes are fixedly provided with an outer limiting ring, which limits and abuts against the outside of the adjacent limiting groove. The right ends of the two active sliding tubes are slidably connected to a passive sliding rod, and the ends of the two passive sliding rods are fixedly connected to a passive buffer plate. A buffer spring is sleeved on the passive sliding rod, and the buffer spring is located between the corresponding outer limiting ring and the passive buffer plate.

[0008] The composite beam includes an upper beam and a lower beam that are fixed to each other. The long sides of the upper beam and the lower beam form a stepped groove. The front and rear ends of the double-T plate body are placed on the stepped groove. The lengths of the active buffer plate and the passive buffer plate are both less than the distance between two adjacent lower beams. The upper beam is uniformly provided with multiple steel reinforcement frames.

[0009] Furthermore, two locking mechanisms are symmetrically installed at one end of the passive slide bar, each locking mechanism including a locking rod and a return spring connected to each other; two receiving slots are symmetrically opened at one end of the passive slide bar, and the bottom of each receiving slot is fixedly connected to one end of the corresponding return spring.

[0010] Furthermore, the active slide tube has two symmetrical through slots, each corresponding to a locking rod; before the double T plate body is placed on the stepped slot, the active buffer plate, the passive buffer plate and the panel are spaced apart; when both the active buffer plate and the passive buffer plate are in contact with the panel, the locking rod extends out of the corresponding through slot.

[0011] Furthermore, the limiting groove is equipped with a limiting mechanism, which includes a semi-circular steel plate, with L-shaped steel plates symmetrically fixed at both ends of the semi-circular steel plate; both the semi-circular steel plate and the L-shaped steel plates are in contact with the inner wall of the limiting groove; the bottom sides of the L-shaped steel plates are fixedly connected to the bottom of the corresponding ribs by anchor bolts; the bottom middle of the two L-shaped steel plates is fixedly connected to an adjusting steel plate by bolts; a threaded hole is opened in the middle of the adjusting steel plate, and a screw is screwed into the threaded hole, with a limiting block rotatably connected to the end of the screw.

[0012] Furthermore, the limiting block includes a semi-circular arc block and a square block that are fixedly connected to each other. The two sides of the square block are attached to one side of the L-shaped steel plate. A T-shaped groove is fixedly provided at the bottom of the square block, and a rotating disk is fixedly provided at the end of the screw. The rotating disk is rotatably connected to the T-shaped groove.

[0013] Furthermore, the limiting groove includes a semi-circular arc groove and a straight groove that are interconnected; the arc groove is correspondingly arranged with the semi-circular steel plate, and the straight groove is correspondingly arranged with the L-shaped steel plate.

[0014] Furthermore, an adjustment handle is fixedly provided at the end of the screw away from the limiting block.

[0015] Furthermore, the bottom outer end of the L-shaped steel plate is spaced from the front and rear ends of the corresponding rib beam, for placement on the stepped groove.

[0016] Furthermore, the top ends of the active and passive buffer plates are higher than the bottom of the panel and lower than the top of the panel; the bottom ends of the active and passive buffer plates are lower than the bottom of the rib beam.

[0017] This invention also claims a method for installation using the aforementioned prestressed concrete double-T slab with linkage adjustment function, comprising the following steps:

[0018] S1. Place the double T-plate body in sequence on the two stepped grooves using a crane. The placement method is to first bring the ends of the left and right rib beams close to the corresponding stepped grooves, and then move the double T-plate body along the direction of the stepped grooves.

[0019] S2. The active buffer plate of the next double-T plate body will first contact the passive buffer plate of the previous installed double-T plate body. If the next double-T plate body is crooked, the active buffer plate of the next double-T plate body will not be fully in contact with the passive buffer plate. At this time, the distance between the active buffer plate of the next double-T plate body and the next double-T plate body will be shortened, making it easier to quickly detect abnormalities. Meanwhile, the passive buffer plate of the previous double-T plate body is elastically compressed for buffering. At this time, it is possible to quickly adjust the orientation and straighten the two double-T plate bodies without contacting each other, until the active buffer plate of the next double-T plate body and the passive buffer plate of the previous double-T plate body are fully in contact and aligned. At this time, the crane's movement direction has also been adjusted.

[0020] S3. Continue moving the next double-T plate body. The active buffer plate will first adhere to one side of the panel of the next double-T plate body, and then push the passive buffer plate of the previous double-T plate body until the passive buffer plate of the previous double-T plate body adheres to one side of the panel of the previous double-T plate body. At this time, the two double-T plate bodies can be attached and installed, and the locking rod extends out of the corresponding through slot to lock the buffer spring. During this process, the buffer spring on one side of the passive buffer plate plays a buffering role to avoid rigid collision.

[0021] S4. Continuously cycle through S1~S3 to complete the installation of multiple double-T plate bodies, and at the same time seal the gaps between the active buffer plate, the passive buffer plate and the stepped groove, so that a complete closed groove is formed between the panel, the active buffer plate, the passive buffer plate and the composite beam; then pour concrete into the closed groove.

[0022] S5. After the concrete has solidified, the active sliding tube and passive sliding rod can be quickly disassembled by removing the adjusting steel plate; then the adjusting steel plate is installed again, and the semi-circular block is made to abut against the semi-circular steel plate by controlling the screw; and the disassembled active sliding tube and passive sliding rod can be reused.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) This invention, through the cooperation of the double-T plate body, active sliding tube, and passive sliding rod, can achieve rapid adjustment and alignment of the orientation without contact between the two double-T plate bodies, and can also avoid rigid collisions during installation. Specifically, the double-T plate bodies are placed sequentially on the two stepped grooves by a crane. The placement method is to first bring the ends of the left and right rib beams close to the corresponding stepped grooves, and then move the double-T plate bodies along the direction of the stepped grooves. At this time, the active buffer plate of the latter double-T plate body will first contact the passive buffer plate of the former double-T plate body. If the latter double-T plate body is crooked, the active buffer plate of the latter double-T plate body will not be fully in contact with the passive buffer plate, and the distance between the active buffer plate of the latter double-T plate body and the latter double-T plate body will be shortened, which facilitates the rapid detection of abnormalities. The passive buffer plate of the former double-T plate body The system is then elastically compressed for cushioning. This allows for rapid adjustment and alignment without the two double-T plate bodies contacting each other, until the active buffer plate of the latter double-T plate body is fully aligned with the passive buffer plate of the former double-T plate body. At this point, the crane's movement direction is also adjusted. This allows for rapid alignment without the two double-T plate bodies contacting each other. Then, as the latter double-T plate body continues to move, the active buffer plate will first align with one side of the panel of the latter double-T plate body, then push against the passive buffer plate of the former double-T plate body until the passive buffer plate of the former double-T plate body aligns with one side of the panel of the former double-T plate body. This completes the installation of the two double-T plate bodies. Throughout this process, the buffer spring on one side of the passive buffer plate continuously provides cushioning, preventing rigid collisions during installation.

[0025] (2) The present invention, through the cooperation of active sliding tube, passive sliding rod and locking mechanism, can avoid rigid collision during the installation of two double T plate bodies, and at the same time maintain the sealing of the closed groove between adjacent panels, which facilitates the subsequent rapid concrete pouring connection and component disassembly, greatly improving efficiency, thus eliminating the need for subsequent formwork operation; Specifically, when the two double T plate bodies are installed together, only the docking operation is realized. Due to the rebound effect of the buffer spring, gaps may occur at any time. Therefore, with the cooperation of the locking mechanism, when the docking is completed, the locking rod will extend out of the corresponding through groove, so that the buffer spring is finally locked and cannot play its elastic role. At this time, the sealing of the closed groove between adjacent panels can be guaranteed. At this time, concrete can be poured directly into the closed groove to achieve rapid pouring connection; At the same time, after the pouring connection is completed, due to the action of the locking mechanism, the buffer spring is locked and cannot play its elastic role. Therefore, without the restriction of force, the active sliding tube and passive sliding rod can be quickly disassembled through the limiting groove, greatly improving efficiency, thus eliminating the need for subsequent formwork operation.

[0026] (3) Through the structural design of the limiting mechanism, this invention can ensure the rapid disassembly and recycling of the active sliding tube and the passive sliding rod, while also maintaining the stability of the subsequent rib beams and preventing safety accidents. Specifically, when it is necessary to disassemble the active sliding tube and the passive sliding rod, after the concrete has solidified, the limiting groove is opened by disassembling the adjusting steel plate, thereby realizing the rapid disassembly of the active sliding tube and the passive sliding rod, and the disassembled active sliding tube and the passive sliding rod can be reused. After disassembly, the adjusting steel plate is installed again, and the semi-ring steel plate, the L-shaped steel plate and the adjusting steel plate form a support structure to initially prevent the limiting groove from breaking. At the same time, by controlling the screw, since the two sides of the block are attached to one side of the L-shaped steel plate, and the rotating disk on the screw is rotatably connected to the T-shaped groove of the block, the screw can be continuously pushed upward by the rotation of the screw, so that the semi-circular block abuts against the semi-ring steel plate. At the same time, the filling of the semi-circular block and the block improves the stability of the limiting groove under force, comprehensively maintaining the stability of the subsequent rib beams and preventing safety accidents.

[0027] (4) The present invention, through the structural design of active buffer plate, passive buffer plate and composite beam, can facilitate the pouring and connection of closed groove, thereby facilitating the rapid formation of the floor as a whole, and also facilitates the disassembly of active buffer plate and passive buffer plate. Specifically, after the double T plate body is installed on the composite beam, the upper beam body and the panels on both sides are in contact, and the active buffer plate and passive buffer plate are in contact with the lower beam body. Therefore, it is only necessary to seal the gap between the active buffer plate and passive buffer plate and the stepped groove to form a complete closed groove between the panel, active buffer plate, passive buffer plate and composite beam. Then, through subsequent pouring, the adjacent double T plate body and composite beam are connected into a whole, thereby forming the floor structure. At the same time, since the active buffer plate and passive buffer plate are in contact with the lower beam body, the active slide pipe, passive slide rod, active buffer plate and passive buffer plate can be quickly disassembled through the operation of the limiting mechanism. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of a precast concrete double-T slab and composite beam combined structure according to the present invention.

[0029] Figure 2 This is a schematic diagram of a composite beam structure of a precast concrete double-T slab and composite beam combined structure according to the present invention;

[0030] Figure 3 This is a schematic diagram of the overall structure of a precast concrete double-T slab combined with a composite beam according to the present invention.

[0031] Figure 4 This is a schematic diagram of the double-T plate dispersed structure of a precast concrete double-T plate and composite beam combined structure according to the present invention;

[0032] Figure 5 This is a schematic diagram of the installation structure of a precast concrete double-T slab combined with a composite beam according to the present invention.

[0033] Figure 6 This is a schematic diagram of the dispersed structure of the double-T plate part of the precast concrete double-T plate and composite beam combined structure of the present invention;

[0034] Figure 7 This is a schematic diagram of the cross-sectional structure of the locking mechanism of a precast concrete double-T slab and composite beam combined structure according to the present invention;

[0035] Figure 8 This is a partial structural schematic diagram of a precast concrete double-T slab and composite beam combined structure according to the present invention;

[0036] Figure 9 This is a schematic diagram of the limiting mechanism structure of a precast concrete double-T slab and composite beam combined structure according to the present invention;

[0037] Figure 10 This is a schematic diagram of the limiting mechanism of the precast concrete double-T slab and composite beam combined structure of the present invention.

[0038] The attached figures are labeled as follows:

[0039] Double T-plate body - 100, panel - 110, left rib - 120, right rib - 130, limiting groove - 140, arc groove - 141, straight groove - 142, active buffer plate - 200, passive buffer plate - 300, active slide tube - 400, through groove - 410, outer limiting ring - 420, passive slide rod - 500, receiving groove - 510, buffer spring - 520, limiting mechanism - 600, semi-ring steel plate - 6 10. L-shaped steel plate - 620, semi-circular block - 630, square block - 640, T-shaped channel - 650, screw - 660, rotating disk - 661, adjusting handle - 670, adjusting steel plate - 680, threaded hole - 681, locking mechanism - 700, locking rod - 710, return spring - 720, composite beam - 800, lower beam - 810, upper beam - 820, stepped groove - 830, steel bar frame - 840. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. Of course, the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0041] Although the steps in this invention are arranged by reference numerals, this is not intended to limit the order of the steps. Unless the order of the steps is explicitly stated or the execution of a step requires other steps as a basis, the relative order of the steps can be adjusted. It is understood that the term "and / or" as used herein refers to and covers any and all possible combinations of one or more of the associated listed items. Example 1

[0042] like Figures 1-10 As shown, a precast concrete double-T slab and composite beam combined structure includes a double-T slab body 100 and composite beams 800, with multiple composite beams 800 arranged in an array. The front and rear ends of the double-T slab body 100 are placed on two adjacent composite beams 800, and multiple double-T slab bodies 100 are arranged side by side to form a floor structure. The double-T slab body 100 includes a panel 110 and a left rib beam 120 and a right rib beam 130 fixedly disposed at the bottom of the panel 110. The bottom of the left rib beam 120 and the right rib beam 130 are each provided with two limiting grooves 140, thus forming two sets. Each set of limiting grooves 140 is slidably connected within a common groove. There are two active slide tubes 400. The left ends of the two active slide tubes 400 are fixedly connected to an active buffer plate 200. The right ends of the two active slide tubes 400 are each fixedly provided with an outer limiting ring 420. The outer limiting ring 420 limits and abuts against the outside of the adjacent limiting groove 140. The right ends of the two active slide tubes 400 are each slidably connected to a passive slide rod 500. The ends of the two passive slide rods 500 are fixedly connected to a passive buffer plate 300. A buffer spring 520 is sleeved on the passive slide rod 500. The buffer spring 520 is located between the corresponding outer limiting ring 420 and the passive buffer plate 300.

[0043] The composite beam 800 includes an upper beam 820 and a lower beam 810 fixed to each other. The long sides of the upper beam 820 and the lower beam 810 form a stepped groove 830. The front and rear ends of the double T plate body (100) are placed on the stepped groove 830. The lengths of the active buffer plate 200 and the passive buffer plate 300 are both less than the distance between two adjacent lower beams 810. The upper beam 820 is uniformly provided with a plurality of steel reinforcement frames 840.

[0044] This invention, through the cooperation of the double-T plate body 100, the active sliding tube 400, and the passive sliding rod 500, enables rapid adjustment and alignment of the two double-T plate bodies 100 without contact, and also avoids rigid collisions during installation. Specifically, the double-T plate bodies 100 are placed sequentially on the two stepped grooves 830 using a crane. The placement method involves first bringing the ends of the left rib beam 120 and the right rib beam 130 close to the corresponding stepped groove 830, and then moving the double-T plate bodies 100 along the direction of the stepped groove 830. The active buffer plate 200 of the subsequent double-T plate body 100 will first contact the passive buffer plate 300 of the previously installed double-T plate body 100. If the subsequent double-T plate body 100 is misaligned, the active buffer plate 200 of the subsequent double-T plate body 100 will not be fully in contact with the passive buffer plate 300, and the distance between the active buffer plate 200 and the subsequent double-T plate body 100 will be shortened, making it easier to quickly detect abnormalities; while the passive buffer plate 300 of the previous double-T plate body 100... The buffer plate 300 is elastically compressed for cushioning; at this point, the orientation can be quickly adjusted and aligned without the two double-T plate bodies 100 contacting each other, until the active buffer plate 200 of the latter double-T plate body 100 and the passive buffer plate 300 of the former double-T plate body 100 are fully aligned and in contact. At this point, the crane's direction of movement has also been adjusted; thus, the orientation can be quickly adjusted and aligned without the two double-T plate bodies 100 contacting each other; then, the latter double-T plate body 100 continues to move, actively... The buffer plate 200 will first adhere to one side of the panel 110 of the next double T plate body 100, and then push the passive buffer plate 300 of the previous double T plate body 100 until the passive buffer plate 300 of the previous double T plate body 100 adheres to one side of the panel 110 of the previous double T plate body 100. At this point, the two double T plate bodies 100 can be attached and installed. During this process, the buffer spring 520 on one side of the passive buffer plate 300 plays a buffering role to avoid rigid collisions during installation.

[0045] It is worth noting that both the active buffer plate 200 and the passive buffer plate 300 can be made of wood, thereby improving the buffering performance to a certain extent. Furthermore, the accompanying drawings in this application specification are only schematic diagrams and do not limit the specific dimensions, so they will not be described in detail here.

[0046] Furthermore, two locking mechanisms 700 are symmetrically installed at one end of the passive slide bar 500. The locking mechanism 700 includes a locking rod 710 and a return spring 720 connected to each other. Two receiving slots 510 are symmetrically opened at one end of the passive slide bar 500. The bottom of each receiving slot 510 is fixedly connected to one end of the corresponding return spring 720.

[0047] This invention, through the cooperation of the active sliding tube 400, the passive sliding rod 500 and the locking mechanism 700, can not only avoid rigid collisions during the installation of the two double T-plate bodies 100, but also maintain the sealing of the closed groove between adjacent panels 110, which facilitates the subsequent rapid concrete pouring connection and component disassembly, greatly improving efficiency and eliminating the need for subsequent formwork operations; a detailed description will follow.

[0048] Furthermore, the active slide tube 400 has two symmetrical through slots 410, which correspond one-to-one with the locking rod 710; before the double T plate body 100 is placed on the stepped groove 830, the active buffer plate 200, the passive buffer plate 300 and the panel 110 are spaced apart; when the active buffer plate 200 and the passive buffer plate 300 are both in contact with the panel 110, the locking rod 710 extends out of the corresponding through slot 410.

[0049] When the two double-T plate bodies 100 are installed together, only the butt joint operation is completed. Due to the rebound effect of the buffer spring 520, gaps may occur at any time. Therefore, with the cooperation of the locking mechanism 700, the locking rod 710 extends out of the corresponding through groove 410 at the same time as the butt joint is completed, so that the buffer spring 520 is finally locked and cannot exert its elastic effect. At this time, the sealing of the closed groove between adjacent panels 110 can be guaranteed. Concrete can be poured directly into the closed groove to achieve rapid pouring connection. At the same time, after the pouring connection is completed, the buffer spring 520 is locked and cannot exert its elastic effect due to the action of the locking mechanism 700. Therefore, without the restriction of force, the active sliding tube 400 and the passive sliding rod 500 can be quickly disassembled through the limiting groove 140, which greatly improves efficiency and eliminates the need for subsequent template operation.

[0050] Furthermore, a limiting mechanism 600 is installed in the limiting groove 140. The limiting mechanism 600 includes a semi-circular steel plate 610, and L-shaped steel plates 620 are symmetrically fixed at both ends of the semi-circular steel plate 610. Both the semi-circular steel plate 610 and the L-shaped steel plates 620 are in contact with the inner wall of the limiting groove 140. The bottom sides of the L-shaped steel plates 620 are fixedly connected to the bottom of the corresponding rib beams by anchor bolts. The bottom middle of the two L-shaped steel plates 620 is fixedly connected to the adjusting steel plate 680 by bolts. A threaded hole 681 is opened in the middle of the adjusting steel plate 680, and a screw rod 660 is screwed into the threaded hole 681. A limiting block is rotatably connected to the end of the screw rod 660.

[0051] The present invention, through the structural design of the limiting mechanism 600, can ensure the rapid disassembly and recycling of the active slide tube 400 and the passive slide rod 500, while also maintaining the stability of the subsequent rib beams and preventing safety accidents; a detailed description will follow.

[0052] Furthermore, the limiting block includes a semi-circular arc block 630 and a square block 640 that are fixedly connected to each other. The two sides of the square block 640 are attached to one side of the L-shaped steel plate 620. A T-shaped groove 650 is fixedly provided at the bottom of the square block 640, and a rotating disk 661 is fixedly provided at the end of the screw 660. The rotating disk 661 is rotatably connected to the T-shaped groove 650.

[0053] Furthermore, the limiting groove 140 includes a semi-circular arc groove 141 and a straight groove 142 that are interconnected; the arc groove 141 is correspondingly arranged with the semi-annular steel plate 610, and the straight groove 142 is correspondingly arranged with the L-shaped steel plate 620.

[0054] When the active slide tube 400 and passive slide rod 500 need to be disassembled, after the concrete has solidified, the adjusting steel plate 680 is removed to open the limiting groove 140, thereby achieving rapid disassembly of the active slide tube 400 and passive slide rod 500. The disassembled active slide tube 400 and passive slide rod 500 can be reused. After disassembly, the adjusting steel plate 680 is reinstalled. The semi-circular steel plate 610 and L-shaped steel plate 620 form a support structure with the adjusting steel plate 680, initially preventing the limiting groove 140 from breaking. Simultaneously... By controlling the screw 660, since the two sides of the block 640 are in contact with one side of the L-shaped steel plate 620, and the rotating disk 661 on the screw 660 is rotatably connected to the T-shaped groove 650 of the block 640, the screw 660 can continuously rise and push the block 640 through the rotation of the screw 660, so that the semi-circular block 630 abuts against the semi-circular steel plate 610; at the same time, the filling of the semi-circular block 630 and the block 640 improves the stability of the limiting groove 140 under force, and comprehensively maintains the stability of the subsequent rib beams to prevent safety accidents.

[0055] Furthermore, an adjustment handle 670 is fixedly provided at the end of the screw 660 away from the limiting block. The adjustment handle 670 facilitates the adjustment of the screw 660.

[0056] Furthermore, the bottom outer end of the L-shaped steel plate 620 is spaced from the front and rear ends of the corresponding rib beam, for placement on the stepped groove 830.

[0057] Furthermore, the top ends of the active buffer plate 200 and the passive buffer plate 300 are higher than the bottom of the panel 110 and lower than the top of the panel 110; the bottom ends of the active buffer plate 200 and the passive buffer plate 300 are lower than the bottom of the rib beam. This structural design facilitates the formation of a complete closed groove.

[0058] A method for installing prestressed concrete double-T slabs with linkage adjustment function includes the following steps:

[0059] S1. The double T plate body 100 is placed on the two stepped grooves 830 in sequence by a crane. The placement method is to first bring the ends of the left rib beam 120 and the right rib beam 130 close to the corresponding stepped grooves 830, and then move the double T plate body 100 along the direction of the stepped grooves 830.

[0060] S2. The active buffer plate 200 of the subsequent double-T plate body 100 will first contact the passive buffer plate 300 of the preceding double-T plate body 100. If the subsequent double-T plate body 100 is crooked, the active buffer plate 200 of the subsequent double-T plate body 100 will not be fully in contact with the passive buffer plate 300. At this time, the distance between the active buffer plate 200 of the subsequent double-T plate body 100 and the subsequent double-T plate body 100 will be shortened, making it easier to quickly detect abnormalities. Meanwhile, the passive buffer plate 300 of the preceding double-T plate body 100 will be elastically compressed for buffering. At this time, the orientation can be quickly adjusted and aligned without the two double-T plate bodies 100 contacting each other, until the active buffer plate 200 of the subsequent double-T plate body 100 and the passive buffer plate 300 of the preceding double-T plate body 100 are fully in contact and aligned. At this time, the crane's movement direction has also been adjusted.

[0061] S3. Continue moving the next double-T plate body 100. The active buffer plate 200 will first adhere to one side of the panel 110 of the next double-T plate body 100, and then push the passive buffer plate 300 of the previous double-T plate body 100 until the passive buffer plate 300 of the previous double-T plate body 100 adheres to one side of the panel 110 of the previous double-T plate body 100. At this time, the two double-T plate bodies 100 can be attached and installed, and the locking rod 710 extends out of the corresponding through slot 410, so that the buffer spring 520 is finally locked. During this process, the buffer spring 520 on one side of the passive buffer plate 300 plays a buffering role to avoid rigid collision.

[0062] S4. Continuously cycle through S1~S3 to complete the installation of multiple double-T plate bodies 100, and at the same time seal the gaps between the active buffer plate 200, the passive buffer plate 300 and the stepped groove 830, so that a complete closed groove is formed between the panel 110, the active buffer plate 200, the passive buffer plate 300 and the composite beam 800; then pour concrete into the closed groove.

[0063] S5. After the concrete has solidified, the active sliding tube 400 and the passive sliding rod 500 can be quickly disassembled by removing the adjusting steel plate 680; then the adjusting steel plate 680 is installed again, and the semi-circular block 630 is made to abut against the semi-circular steel plate 610 by controlling the screw 660; and the disassembled active sliding tube 400 and passive sliding rod 500 can be reused.

[0064] This invention, through the structural design of the active buffer plate 200, passive buffer plate 300, and composite beam 800, facilitates the pouring and connection of the closed groove, thereby enabling rapid formation of the overall floor structure. It also facilitates the disassembly of the active buffer plate 200 and passive buffer plate 300. Specifically, after the double-T slab body 100 is installed on the composite beam 800, the upper beam 820 is fitted with the side panels 110, and the active buffer plate 200 and passive buffer plate 300 are fitted with the lower beam 810. Therefore, only the active buffer plate 200, passive buffer plate 300, and stepped groove 830 need to be connected. By sealing the gaps between the panels 110, the active buffer plate 200, the passive buffer plate 300, and the composite beam 800, a complete closed groove can be formed between them. Then, through subsequent pouring and reinforcement by the steel frame 840, the adjacent double-T slab bodies 100 and the composite beam 800 can be connected into a whole to form a floor structure. At the same time, since the active buffer plate 200 and the passive buffer plate 300 are in contact with the lower beam 810, the active sliding tube 400, the passive sliding rod 500, the active buffer plate 200, and the passive buffer plate 300 can be quickly disassembled by operating the limiting mechanism 600.

[0065] It is worth noting that during the pouring process, the minute gaps between the double-T plate body 100, the active buffer plate 200, the passive buffer plate 300 and the composite beam 800 of the present invention can be temporarily handled by conventional sealing operations. This is a routine operation and will not be described in detail here.

[0066] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several improvements and modifications without departing from the inventive concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A precast concrete double-T slab and composite beam combined structure, characterized in that, The system includes a double-T slab body (100) and composite beams (800), with multiple composite beams (800) arranged in an array. The front and rear ends of the double-T slab body (100) are placed on two adjacent composite beams (800), and multiple double-T slab bodies (100) are arranged side by side to form a floor structure. The double-T slab body (100) includes a panel (110) and a left rib beam (120) and a right rib beam (130) fixedly installed at the bottom of the panel (110). The bottom of the left rib beam (120) and the right rib beam (130) are provided with two limiting grooves (140), thus forming two sets. Each set of limiting grooves (140) is slidably connected to an active sliding tube (400). An active buffer plate (200) is fixedly connected to the left end of two active slide tubes (400), and an outer limiting ring (420) is fixedly provided at the right end of each of the two active slide tubes (400). The outer limiting ring (420) is limited and abuts against the outside of the adjacent limiting groove (140). A passive slide rod (500) is slidably connected inside the right end of each of the two active slide tubes (400), and a passive buffer plate (300) is fixedly connected to the end of each of the two passive slide rods (500). A buffer spring (520) is sleeved on the passive slide rod (500), and the buffer spring (520) is located between the outer limiting ring (420) and the passive buffer plate (300). The composite beam (800) includes an upper beam (820) and a lower beam (810) fixed to each other. The long sides of the upper beam (820) and the lower beam (810) form a stepped groove (830). The front and rear ends of the double T plate body (100) are placed on the stepped groove (830). The lengths of the active buffer plate (200) and the passive buffer plate (300) are both less than the distance between two adjacent lower beams (810). The upper beam (820) is uniformly provided with multiple steel reinforcement frames (840).

2. The precast concrete double-T slab and composite beam combined structure according to claim 1, characterized in that, Two locking mechanisms (700) are symmetrically installed at one end of the passive slide bar (500). The locking mechanism (700) includes a locking rod (710) and a return spring (720) connected to each other. Two receiving slots (510) are symmetrically opened at one end of the passive slide bar (500). The bottom of each receiving slot (510) is fixedly connected to one end of the corresponding return spring (720).

3. The precast concrete double-T slab and composite beam combined structure according to claim 2, characterized in that, Two through slots (410) are symmetrically provided on the active slide tube (400), and the through slots (410) correspond one-to-one with the locking rod (710); before the double T plate body (100) is placed on the stepped groove (830), the active buffer plate (200), the passive buffer plate (300) and the panel (110) are spaced apart; when the active buffer plate (200) and the passive buffer plate (300) both abut against the panel (110), the locking rod (710) extends out of the corresponding through slot (410).

4. The precast concrete double-T slab and composite beam combined structure according to claim 1, characterized in that, The limiting groove (140) is equipped with a limiting mechanism (600), which includes a semi-circular steel plate (610). L-shaped steel plates (620) are symmetrically fixed at both ends of the semi-circular steel plate (610). Both the semi-circular steel plate (610) and the L-shaped steel plate (620) are in contact with the inner wall of the limiting groove (140). The bottom sides of the L-shaped steel plate (620) are fixedly connected to the bottom of the corresponding rib beam by anchor bolts. The bottom middle of the two L-shaped steel plates (620) is fixedly connected to the adjusting steel plate (680) by bolts. A threaded hole (681) is opened in the middle of the adjusting steel plate (680), and a screw rod (660) is screwed into the threaded hole (681). The end of the screw rod (660) is rotatably connected to a limiting block.

5. The precast concrete double-T slab and composite beam combined structure according to claim 4, characterized in that, The limiting block includes a semi-circular arc block (630) and a square block (640) fixedly connected to each other. The two sides of the square block (640) are respectively attached to one side of the L-shaped steel plate (620). A T-shaped groove (650) is fixedly provided at the bottom of the square block (640), and a rotating disk (661) is fixedly provided at the end of the screw (660). The rotating disk (661) is rotatably connected to the T-shaped groove (650).

6. The precast concrete double-T slab and composite beam combined structure according to claim 5, characterized in that, The limiting groove (140) includes a semi-circular arc groove (141) and a straight groove (142) that are interconnected; the arc groove (141) is correspondingly arranged with the semi-circular steel plate (610), and the straight groove (142) is correspondingly arranged with the L-shaped steel plate (620).

7. The precast concrete double-T slab and composite beam combined structure according to claim 4, characterized in that, The screw (660) is fixedly provided with an adjustment handle (670) at one end away from the limiting block.

8. The precast concrete double-T slab and composite beam combined structure according to claim 4, characterized in that, The bottom outer end of the L-shaped steel plate (620) is spaced from the front and rear ends of the corresponding rib beam, and is used to place it on the stepped groove (830).

9. The precast concrete double-T slab and composite beam combined structure according to claim 1, characterized in that, The tops of the active buffer plate (200) and the passive buffer plate (300) are higher than the bottom of the panel (110) and lower than the top of the panel (110); the bottoms of the active buffer plate (200) and the passive buffer plate (300) are lower than the bottom of the rib beam.

10. A method for installing a precast concrete double-T slab and composite beam combined structure as described in any one of claims 1 to 9, characterized in that, Includes the following steps: S1. The double T plate body (100) is placed on the two stepped grooves (830) by a crane. The placement method is to first bring the ends of the left rib beam (120) and the right rib beam (130) close to the corresponding stepped groove (830), and then move the double T plate body (100) along the direction of the stepped groove (830). S2. The active buffer plate (200) of the subsequent double-T plate body (100) will first contact the passive buffer plate (300) of the previously installed double-T plate body (100). If the subsequent double-T plate body (100) is crooked, then the active buffer plate (200) of the subsequent double-T plate body (100) will not be fully in contact with the passive buffer plate (300). At this time, the active buffer plate (200) of the subsequent double-T plate body (100) will contact the passive buffer plate (300) of the subsequent double-T plate body. (100) The distance is shortened, making it easier to quickly detect abnormalities; while the passive buffer plate (300) of the previous double T plate body (100) is elastically compressed for buffering; at this time, the orientation can be quickly adjusted and aligned without the two double T plate bodies (100) contacting each other, until the active buffer plate (200) of the next double T plate body (100) and the passive buffer plate (300) of the previous double T plate body (100) are fully aligned and in contact, and at this time the crane's movement direction has also been adjusted; S3. Continue moving the next double-T plate body (100). The active buffer plate (200) will first adhere to one side of the panel (110) of the next double-T plate body (100), and then push the passive buffer plate (300) of the previous double-T plate body (100) until the passive buffer plate (300) of the previous double-T plate body (100) adheres to one side of the panel (110) of the previous double-T plate body (100). At this time, the two double-T plate bodies (100) can be attached and installed, and the locking rod (710) extends out of the corresponding through slot (410) to lock the buffer spring (520) in the end. During this process, the buffer spring (520) on one side of the passive buffer plate (300) plays a buffering role to avoid rigid collision. S4. Repeat S1~S3 continuously to complete the installation of multiple double-T plate bodies (100), and at the same time seal the gaps between the active buffer plate (200), the passive buffer plate (300) and the stepped groove (830), so that a complete closed groove is formed between the panel (110), the active buffer plate (200), the passive buffer plate (300) and the composite beam (800); then pour concrete into the closed groove. S5. After the concrete has solidified, the active slide tube (400) and passive slide rod (500) are quickly disassembled by removing the adjusting steel plate (680); then the adjusting steel plate (680) is installed again, and the semi-circular block (630) is made to abut against the semi-circular steel plate (610) by controlling the screw (660); and the disassembled active slide tube (400) and passive slide rod (500) are reused.

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