Split assembly type prefabricated cap beam

Abstract

The application provides a split assembly type prefabricated bent cap. The split assembly type prefabricated bent cap comprises prestressed reinforcement, a bent cap body, a plurality of the cross beams are installed at the top end of the column, the surface of the cross beam is installed with the prefabricated plate, a butt joint mechanism, a plurality of the first sleeves are installed in the cross beam, the first splicing reinforcement is in sliding connection with the first sleeve, a splicing mechanism, a plurality of the second splicing reinforcement is fixedly connected at the top end of the cross beam, the second splicing reinforcement and the first splicing reinforcement are in sliding connection with the second sleeve, the fixed reinforcement is fixedly connected at the top end of the second sleeve, the fixed pipe is fixed to the bottom end of the second sleeve, and the adjacent second sleeves are communicated through the fixed pipe, an exhaust mechanism, a reinforcing mechanism and a sealing mechanism. The split assembly type prefabricated bent cap has the advantages of accelerating the construction speed, low hoisting tonnage and convenient construction.

Description

Technical Field

[0001] This invention relates to the field of precast cap beams, and more particularly to a segmented precast cap beam. Background Technology

[0002] With the rapid advancement of industrialized bridge construction in recent years, prefabricated bridge cap beams have gradually become a research hotspot in the industry. However, with the increasing traffic demand during urban construction, the tonnage of bridge cap beams is increasing, gradually exceeding the existing transport and lifting capacity limits, which increases the construction risks during the prefabrication, transportation, and hoisting of cap beams. In order to reduce construction risks, large-tonnage cap beams are prefabricated in sections.

[0003] In segmented precast cap beams, one method involves dividing the cap beam laterally into two large segments and setting a wet joint between the two columns; the other method involves setting a corbel-type shear key in the cantilever section of the cap beam. The former requires the erection of scaffolds for wet joint construction, which has low precision requirements and affects the construction speed. The latter involves dry joint assembly, which requires high precision in precast construction. However, the latter method presents problems such as complicated prestressing tendon threading, time-limited joint adhesive application, and the possibility of cranes occupying the construction access road for extended periods, making construction inconvenient.

[0004] Therefore, it is necessary to provide a new segmented prefabricated cap beam to solve the above-mentioned technical problems. Summary of the Invention

[0005] The technical problem solved by this invention is to provide a segmented prefabricated cap beam that accelerates construction speed, has low hoisting tonnage, and is convenient to construct.

[0006] To solve the above-mentioned technical problems, the present invention provides a segmented precast cap beam comprising: prestressed steel bars; a cap beam body, the cap beam body including columns, crossbeams, precast slabs, and steel cages, wherein the prestressed steel bars are respectively arranged inside the crossbeams and the precast slabs, multiple crossbeams are installed at the top of the columns, the precast slabs are installed on the surface of the crossbeams, and steel cages are respectively arranged inside the columns, the crossbeams, and the precast slabs; a docking mechanism, the docking mechanism including first splicing steel bars, first sleeves, connecting pipes, and first connecting pipes, multiple first splicing steel bars are fixedly connected to the top of the columns, multiple first sleeves are installed inside the crossbeams, and the first splicing steel bars are slidably connected to the first sleeves; the connecting pipes are symmetrically arranged inside the crossbeams, and the connecting pipes are fixed to the side walls of the first sleeves; in the same crossbeam, the first connecting pipes are... Both ends of the pipe are connected to the interior of the first sleeve; a splicing mechanism, which includes a second splicing steel bar, a second sleeve, a fixed steel bar, a grouting pipe, and a fixing pipe, wherein multiple second splicing steel bars are fixedly connected to the top of the crossbeam, and the second splicing steel bars and the first splicing steel bars are slidably connected to the second sleeve; multiple second sleeves, the fixed steel bars, the grouting pipe, and the fixing pipe are respectively arranged inside the precast slab, the top of the second sleeve is fixedly connected to the fixed steel bar, the fixing pipe is fixed to the bottom of the second sleeve, and adjacent second sleeves are connected through the fixing pipe; an exhaust mechanism, which is installed at the top of the second sleeve; a reinforcement mechanism, which is fixed at the connection between the precast slab and the crossbeam; and a sealing mechanism, wherein multiple sealing mechanisms are respectively installed inside the first sleeve and the second sleeve.

[0007] Preferably, the sealing mechanism includes a plug, a magnet, a sealing sleeve, and retaining rings. The bottom ends of the first sleeve and the second sleeve engage with the plug. The magnet is installed on the side wall of the plug and is attracted to the bottom ends of the first sleeve and the second sleeve. The side wall of the plug is fitted with the elastic sealing sleeve, and the side wall of the sealing sleeve is fitted with a plurality of retaining rings, which engage with the inner side walls of the first sleeve and the second sleeve.

[0008] Preferably, the sidewall of the sealing sleeve has a wavy cross-section and the sidewall of the sealing sleeve is arc-shaped.

[0009] Preferably, the reinforcement mechanism includes a cylinder, a rubber plug, and a screw. The top end of the first sleeve is threadedly connected to the cylinder. The rubber plug, which has an internal funnel shape, is installed inside the cylinder and is slidably connected to the first spliced ​​reinforcing bar. The top end of the cylinder is threadedly connected to the screw, and the screw abuts against the side wall of the first spliced ​​reinforcing bar.

[0010] Preferably, the plug has a funnel-shaped internal structure, and the plug located at the top of the first sleeve is slidably connected to the side wall of the cylinder.

[0011] Preferably, the exhaust mechanism includes an exhaust pipe, a support pipe, a baffle, a second connecting pipe, a locking ball, a thin rope, and a float. The top end of the second sleeve is fixedly connected to the exhaust pipe. Multiple support pipes are installed on the side wall of the same exhaust pipe. The baffle is installed at the connection between the support pipe and the exhaust pipe. The side wall of the support pipe is T-shaped. The bottom end of the second connecting pipe, which is funnel-shaped inside, engages with the locking ball. The float is slidably connected inside the support pipe. The two ends of the thin rope are fixedly connected to the float and the locking ball, respectively.

[0012] Preferably, the sidewall of the support tube has a "Y" shaped structure, and the support tube and the second connecting tube are located inside the second sleeve.

[0013] Preferably, a mortar pad is provided at the connection between the crossbeam and the column.

[0014] Preferably, the first spliced ​​steel bar is fixedly connected to the steel cage inside the column, the second spliced ​​steel bar and the second sleeve are fixedly connected to the steel cage inside the beam, and the fixed steel bar is fixedly connected to the steel cage inside the precast slab.

[0015] Compared with related technologies, the segmented prefabricated cap beam provided by the present invention has the following beneficial effects:

[0016] This invention provides a segmented prefabricated cap beam, the main body of which is composed of prefabricated slabs and multiple crossbeams. Longitudinally, the large-tonnage cap beam is decomposed into several prefabricated components. These prefabricated components are lightweight, thus reducing the lifting tonnage of the segmented prefabricated cap beam structure system, minimizing requirements on construction equipment and road conditions, and broadening its application range. It is a cap beam structure suitable for industrialized prefabricated bridge applications. During installation, the crossbeams are first hoisted onto the surface of the column. The first splicing steel bar at the top of the column passes through the first sleeve. Then, grout is injected into the interior of the first sleeve from top to bottom through the connecting pipe. The top of the first sleeve is not sealed, allowing direct observation of whether the mortar inside the first sleeve is full during the grouting process. Once the mortar is full, the first sleeve and the first splicing steel bar are connected... The reinforcement mechanism is installed on the side wall of the reinforcing bar. This mechanism further compresses the mortar inside the first sleeve, compacting it. Simultaneously, the reinforcement mechanism connects the first spliced ​​reinforcing bar to the first sleeve and the crossbeam, increasing the stability and firmness of the crossbeam on the column surface. After the crossbeam is installed, the precast slab is hoisted onto the side wall of the crossbeam. The first and second spliced ​​reinforcing bars enter the interior of the second sleeve, and grout is injected into the second sleeve from bottom to top, thus fixing the precast slab to the surface of the crossbeam. During grouting, the sealing mechanism is engaged at the bottom of the first and second sleeves to prevent grout leakage. No wet joints are required during installation, making installation convenient and the structural system safe and reliable. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of the segmented prefabricated cap beam provided by the present invention;

[0018] Figure 2 for Figure 1 The diagram shown is an exploded view of the main structure of the cap beam.

[0019] Figure 3 for Figure 1 The image shows a side view of the internal structure of the beam.

[0020] Figure 4 for Figure 3 The diagram shows an enlarged view of the structure at point A.

[0021] Figure 5 for Figure 1 The image shows a side view of the internal structure of the main body of the cap beam;

[0022] Figure 6 for Figure 5 The diagram shows an enlarged view of the structure at point B.

[0023] Figure 7 for Figure 1 The diagram shows the internal structure of the main body of the cap beam;

[0024] Figure 8 for Figure 6 The diagram shows the structure of the splicing mechanism.

[0025] Figure 9 for Figure 8 The diagram shows an enlarged view of the structure at point C.

[0026] Numbered in the diagram: 1. Main body of the cap beam, 11. Column, 12. Horizontal beam, 13. Precast slab, 14. Reinforcing cage, 2. Prestressed steel bar, 21. Through hole, 3. Butt joint mechanism, 31. First spliced ​​steel bar, 32. First sleeve, 33. Connecting pipe, 34. First connecting pipe, 4. Splicing mechanism, 41. Second spliced ​​steel bar, 42. Second sleeve, 43. Fixed steel bar, 44. Grouting pipe, 45. Fixed pipe, 5. Reinforcing mechanism, 51. Cylinder, 52. Rubber plug, 53. Screw, 6. Sealing mechanism, 61. Plug, 62. Magnet, 63. Sealing sleeve, 64. Snap ring, 7. Exhaust mechanism, 71. Exhaust pipe, 72. Support pipe, 73. Baffle, 74. Second connecting pipe, 75. Clamping ball, 76. Thin rope, 77. Float, 8. Mortar cushion layer. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 . Figure 1 A schematic diagram of the structure of the segmented prefabricated cap beam provided by the present invention; Figure 2 for Figure 1 The diagram shown is an exploded view of the main structure of the cap beam. Figure 3 for Figure 1 The image shows a side view of the internal structure of the beam. Figure 4 for Figure 3 The diagram shows an enlarged view of the structure at point A. Figure 5 for Figure 1 The image shows a side view of the internal structure of the main body of the cap beam; Figure 6 for Figure 5 The diagram shows an enlarged view of the structure at point B. Figure 7 for Figure 1 The diagram shows the internal structure of the main body of the cap beam; Figure 8 for Figure 6 The diagram shows the structure of the splicing mechanism. Figure 9for Figure 8 The diagram shows an enlarged view of the structure at point C. The segmented precast cap beam includes: prestressed steel bars 2; and a cap beam body 1, which includes columns 11, crossbeams 12, precast slabs 13, and a steel cage 14. The prestressed steel bars 2 are respectively installed inside the crossbeams 12 and the precast slabs 13. Multiple crossbeams 12 are installed at the top of the columns 11, and the precast slabs 13 are installed on the surface of the crossbeams 12. The cap beam body 1 is composed of the precast slabs 12 and multiple crossbeams 13. Longitudinally, the large-tonnage cap beam is broken down into several precast components. These precast components are lightweight, thus reducing the lifting tonnage of the segmented precast cap beam structure system and minimizing requirements on construction equipment and road conditions.

[0029] The docking mechanism 3 includes a first splicing steel bar 31, a first sleeve 32, a connecting pipe 33, and a first connecting pipe 34. Multiple first splicing steel bars 31 are fixedly connected to the top of the column 11. Multiple first sleeves 32 are installed inside the crossbeam 12, and the first splicing steel bars 31 and the first sleeves 32 are slidably connected. The connecting pipes 33 are symmetrically arranged inside the crossbeam 12 and are fixed to the side walls of the first sleeves 32. In the same crossbeam 12, both ends of the first connecting pipe 34 connect to the interior of the first sleeves 32. The sealing mechanism 6 includes a stopper 61, a magnet 62, a sealing sleeve 63, and retaining rings 64. The bottom ends of the first sleeve 32 and the second sleeve 42 engage with the stopper 61. The magnet 62 is mounted on the side wall of the stopper 61 and is attracted to the bottom ends of the first sleeve 32 and the second sleeve 42. The side wall of the stopper 61 is fitted with an elastic sealing sleeve 63. Multiple retaining rings 64 are mounted on the side wall of the sealing sleeve 63 and engage with the inner side walls of the first sleeve 32 and the second sleeve 42. The connection between the crossbeam 12 and the column 11 is... A mortar pad 8 is set at the joint; before splicing the column 11 and the beam 12, the top surface of the column 11 is roughened, cleaned, moistened with water, and a template is installed. After the beam 12 pad is installed, mortar is poured into the template to form the mortar pad 8; the beam 12 is lifted so that the first sleeve 32 is aligned with the first splicing steel bar 31; the sealing sleeve 63 is squeezed to shrink the elastic rubber sleeve 63, and the sealing sleeve 63 is placed inside the first sleeve 32. The sealing sleeve 63 is stretched and tightly against the inner wall of the first sleeve 32, thus sealing the... The sealing sleeve 63 is placed inside the first sleeve 32, and the plug 61 abuts against the bottom surface of the first sleeve 32. The magnet 62 on the surface of the plug 61 attracts the side wall of the first sleeve 32, thereby fixing the sealing sleeve 63 inside the first sleeve 32. The crossbeam 12 is lowered down, and the first splicing steel bar 31 passes through the plug 61 and enters the interior of the first sleeve 32. As the crossbeam 12 descends, it stops on the surface of the mortar layer 8. Under the pressure of the weight of the crossbeam 12, the plug 61 is pressed tightly against the connection between the first sleeve 32 and the mortar layer 8.The grouting machine is connected to the connecting pipe 33 at the bottom of the crossbeam 12, allowing mortar to enter the interior of the first sleeve 32 through the connecting pipe 33 and the first connecting pipe 34. During grouting, the plug 61 is tightly attached to the connection between the first sleeve 32 and the mortar layer 8, and the elastic sealing sleeve 63 is tightly attached to the inner wall of the first sleeve 32. The side wall of the sealing sleeve 63 has a wavy cross-section and an arc shape. The sealing sleeve 63 is composed of multiple retaining rings 64, which are spread open and tightly attached to the inner wall of the first sleeve 32. During grouting, mortar enters the interior of the sealing sleeve 63, and the sealing sleeve 63 and the plug 61 prevent mortar leakage. The top of the first sleeve 32 is not sealed, and it is possible to directly observe whether the mortar inside the first sleeve 32 is full during the grouting process. After the mortar is full, the connecting pipe 33 is sealed.

[0030] A reinforcing mechanism 5 is fixed at the connection between the precast slab 13 and the crossbeam 12. The reinforcing mechanism 5 includes a cylinder 51, a rubber plug 52, and a screw 53. The top end of the first sleeve 32 is threadedly connected to the cylinder 51. The rubber plug 52, which has an internal funnel shape, is installed inside the cylinder 51. The rubber plug 52 is slidably connected to the first splicing steel bar 31. The top end of the cylinder 51 is threadedly connected to the screw 53, and the screw 53 abuts against the side wall of the first splicing steel bar 31. After the mortar inside the first sleeve 32 is filled, the cylinder 51 is threadedly connected to the first sleeve 32. The first sleeve 32, with the rubber plug 52, slides downward on the side wall of the first splicing steel bar 31. At the same time, the rubber plug 52 moves downward to squeeze the mortar inside the first sleeve 32, compacting the mortar inside the first sleeve 32 and increasing the density of the mortar inside the first sleeve 32. The screw 53 is used to squeeze the first splicing steel bar 31, so that the first splicing steel bar 31 is connected to the cylinder 51 and the first sleeve 32, increasing the stability and firmness of the connection between the crossbeam 12 and the column 11.

[0031] The splicing mechanism 4 includes a second splicing steel bar 41, a second sleeve 42, a fixed steel bar 43, a grouting pipe 44, and a fixing pipe 45. Multiple second splicing steel bars 41 are fixedly connected to the top of the crossbeam 12. The second splicing steel bars 41 and the first splicing steel bar 31 are slidably connected to the second sleeve 42. Multiple second sleeves 42, fixed steel bars 43, grouting pipes 44, and fixing pipes 45 are respectively arranged inside the precast slab 13. The top of the second sleeve 42 is fixedly connected to the fixed steel bar 43, and the fixing pipe 45 is fixed to the bottom of the second sleeve 42. Adjacent second sleeves 42 are connected through the fixing pipe 45. An exhaust mechanism 7 is installed on the top of the second sleeve 42. The exhaust mechanism 7 includes an exhaust pipe 71, a support pipe 72, a baffle 73, a second connecting pipe 74, a retaining ball 75, a thin rope 76, and a float 77. The top end of the second sleeve 42 is fixedly connected to the exhaust pipe 71. Multiple support pipes 72 are installed on the side wall of the same exhaust pipe 71. The baffle 73 is installed at the connection between the support pipe 72 and the exhaust pipe 71. The side wall of the support pipe 72 is T-shaped. The bottom end of the second connecting pipe 74, which is funnel-shaped inside, engages with the retaining ball 75. The float 77 is slidably connected inside the support pipe 72. The two ends of the thin rope 76 are fixedly connected to the float 77 and the retaining ball 75, respectively. The support pipe 72 and the second connecting pipe 74 are located inside the second sleeve 42.When hoisting the precast slab 13, align the first spliced ​​steel bar 31 and the second spliced ​​steel bar 41 with the second sleeve 42. Similarly, insert the plug 61 into the bottom end of the second sleeve 42. Place the precast slab 13 on the surface of the beam 12. The first spliced ​​steel bar 31, the second spliced ​​steel bar 41, and the cylinder 51 enter the interior of the second sleeve 42. Connect the grouting machine to the grouting pipe 44. The mortar enters the bottom end of the second sleeve 42 through the grouting pipe 44 and the fixing pipe 45. At this time, the top end of the second sleeve 42 at the center of the precast slab 13 is connected to the outside through the vent pipe 71, while the top ends of the other second sleeves 42 are sealed. This allows the mortar to first fill the second sleeve 42 at the center of the precast slab 13. The mortar filling opening is located at the vent pipe. The mortar flows through the exhaust pipe 71 and contacts the baffle 73, allowing it to first enter the support pipe 72. The support pipe 72 has a "Y"-shaped sidewall to facilitate mortar entry. After entering the support pipe 72, the mortar compresses the float 77. Under the weight of the mortar, the float 77 moves downward, driving the thin rope 76 and the locking ball 75. The locking ball 75 moves upward and enters the top of the second connecting pipe 74, opening the second connecting pipe 74 and connecting the second sleeve 42 near the center of the exhaust pipe 71, thus gradually filling the second sleeve 42 with mortar. Similarly, multiple second sleeves 42 inside the precast slab 13 gradually fill from the center of the precast slab 13 towards its edge.

[0032] The plug 61 has a funnel-shaped internal structure. The plug 61 located at the top of the first sleeve 32 is slidably connected to the side wall of the cylinder 51 to facilitate the cylinder 51 entering the interior of the plug 61.

[0033] The column 11, the beam 12, and the precast slab 13 are respectively provided with steel cages 14. The first splicing steel bar 31 is fixedly connected to the steel cage 14 inside the column 11. The second splicing steel bar 41 and the second sleeve 42 are fixedly connected to the steel cage 14 inside the beam 12. The fixing steel bar 43 is fixedly connected to the steel cage 14 inside the precast slab 13. In order to increase the stability of the first splicing steel bar 31, the second splicing steel bar 41, the second sleeve 42, and the fixing steel bar 43, after splicing, the column 11, the beam 12, and the precast slab 13 are made into a whole.

[0034] The working principle of the segmented prefabricated cap beam provided by this invention includes the following steps: After the column 11 is installed, the top surface of the column 11 is roughened, cleaned, moistened with water, and a template is installed. After the crossbeam 12 pad is installed, mortar is poured into the template to form the mortar pad layer 8; the crossbeam 12 is lifted so that the first sleeve 32 is aligned with the first spliced ​​steel bar 31 at the center of the top surface of the column 11, and one crossbeam 12 is installed at the center of the column 11. Next, install the crossbeams 12 at both ends of the column 11; when installing the crossbeams 12, place the sealing sleeve 63 inside the first sleeve 32. When the crossbeam 12 descends and stops on the surface of the mortar layer 8, under the pressure of the weight of the crossbeam 12, the plug 61 tightly adheres to the connection between the first sleeve 32 and the mortar layer 8; connect the grouting machine to the connecting pipe 33 at the bottom of the crossbeam 12 and inject grout into the first sleeve 32; similarly, install the other crossbeams 12 on the surface of the column 11;

[0035] After the crossbeam 12 is hoisted, the cylinder 51 is threadedly connected to the first sleeve 32. The first sleeve 32, with the rubber plug 52, slides downward on the side wall of the first spliced ​​steel bar 31. At the same time, the rubber plug 52 moves downward to squeeze the mortar inside the first sleeve 32, compacting the mortar inside the first sleeve 32 and increasing the density of the mortar inside the first sleeve 32. The screw 53 is installed at the top of the cylinder 51 so that the screw 53 squeezes the first spliced ​​steel bar 31.

[0036] The precast slab 13 is hoisted, and the first spliced ​​steel bar 31 and the second spliced ​​steel bar 41 are aligned with the second sleeve 42. Similarly, the plug 61 is placed at the bottom of the second sleeve 42. The precast slab 13 is placed on the surface of the crossbeam 12. The first spliced ​​steel bar 31, the second spliced ​​steel bar 41, and the cylinder 51 enter the interior of the second sleeve 42. The grouting machine is connected to the grouting pipe 44. The mortar enters the bottom of the second sleeve 42 through the grouting pipe 44 and the fixing pipe 45. Through the setting of the exhaust mechanism 7, the multiple second sleeves 42 inside the precast slab 13 are gradually filled from the center of the precast slab 13 towards the edge of the precast slab 13. When all the second sleeves 42 have been grouted, the cap beam assembly is completed. The prestressed steel bar 2 is passed through the through hole 21 inside the crossbeam 12 and the precast slab 13, thereby performing prestressing tensioning construction on the crossbeam 12 and the precast slab 13.

[0037] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A segmented prefabricated cap beam, characterized in that, include: Prestressed steel bars (2); The main body of the cap beam (1) includes a column (11), a crossbeam (12), a precast slab (13) and a steel cage (14). The prestressed steel bars (2) are respectively installed inside the crossbeam (12) and the precast slab (13). Multiple crossbeams (12) are installed at the top of the column (11). The precast slab (13) is installed on the surface of the crossbeam (12). The steel cage (14) is respectively installed inside the column (11), the crossbeam (12) and the precast slab (13). The docking mechanism (3) includes a first splicing steel bar (31), a first sleeve (32), a connecting pipe (33), and a first connecting pipe (34). Multiple first splicing steel bars (31) are fixedly connected to the top of the column (11). Multiple first sleeves (32) are installed inside the crossbeam (12). The first splicing steel bars (31) and the first sleeves (32) are slidably connected. The connecting pipes (33) are symmetrically arranged inside the crossbeam (12). The connecting pipes (33) are fixed to the side wall of the first sleeves (32). In the same crossbeam (12), the two ends of the first connecting pipe (34) are connected to the inside of the first sleeves (32). The splicing mechanism (4) includes a second splicing steel bar (41), a second sleeve (42), a fixed steel bar (43), a grouting pipe (44), and a fixed pipe (45). Multiple second splicing steel bars (41) are fixedly connected to the top of the crossbeam (12). The second splicing steel bars (41) and the first splicing steel bar (31) are slidably connected to the second sleeve (42). Multiple second sleeves (42), fixed steel bars (43), grouting pipes (44), and fixed pipes (45) are respectively arranged inside the precast slab (13). The top of the second sleeve (42) is fixedly connected to the fixed steel bar (43). The fixed pipe (45) is fixed to the bottom of the second sleeve (42). Adjacent second sleeves (42) are connected through the fixed pipe (45). An exhaust mechanism (7) is installed at the top of the second sleeve (42). The exhaust mechanism (7) includes an exhaust pipe (71), a support pipe (72), a baffle (73), a second connecting pipe (74), a locking ball (75), a thin rope (76), and a float (77). The exhaust pipe (71) is fixedly connected to the top of the second sleeve (42). Multiple support pipes (72) are installed on the side wall of the same exhaust pipe (71). The baffle (73) is installed at the connection between the support pipe (72) and the exhaust pipe (71). The second connecting pipe (74) with a "T"-shaped side wall is connected to the second connecting pipe (74). The bottom end of the second connecting pipe (74) with a funnel-shaped interior engages with the locking ball (75). The float (77) is slidably connected inside the support pipe (72). The two ends of the thin rope (76) are fixedly connected to the float (77) and the locking ball (75), respectively. A reinforcing mechanism (5) is fixed at the connection between the precast slab (13) and the crossbeam (12); Sealing mechanisms (6), a plurality of the sealing mechanisms (6) are respectively installed inside the first sleeve (32) and the second sleeve (42).

2. The segmented prefabricated cap beam according to claim 1, characterized in that, The sealing mechanism (6) includes a plug (61), a magnet (62), a sealing sleeve (63), and retaining rings (64). The bottom ends of the first sleeve (32) and the second sleeve (42) engage with the plug (61). The magnet (62) is installed on the side wall of the plug (61), and the magnet (62) is attracted to the bottom ends of the first sleeve (32) and the second sleeve (42). The side wall of the plug (61) is equipped with the elastic sealing sleeve (63), and the side wall of the sealing sleeve (63) is equipped with a plurality of retaining rings (64), and the retaining rings (64) engage with the inner side walls of the first sleeve (32) and the second sleeve (42).

3. The segmented prefabricated cap beam according to claim 2, characterized in that, The sidewall of the sealing sleeve (63) has a wavy cross-section and the sidewall of the sealing sleeve (63) is arc-shaped.

4. The segmented prefabricated cap beam according to claim 2, characterized in that, The reinforcement mechanism (5) includes a cylinder (51), a rubber plug (52), and a screw (53). The top end of the first sleeve (32) is threadedly connected to the cylinder (51). The rubber plug (52), which has a funnel-shaped interior, is installed inside the cylinder (51). The rubber plug (52) is slidably connected to the first splicing steel bar (31). The top end of the cylinder (51) is threadedly connected to the screw (53), and the screw (53) abuts against the side wall of the first splicing steel bar (31).

5. The segmented prefabricated cap beam according to claim 4, characterized in that, The plug (61) has a funnel-shaped internal structure, and the plug (61) located at the top of the first sleeve (32) is slidably connected to the side wall of the cylinder (51).

6. The segmented prefabricated cap beam according to claim 1, characterized in that, The sidewall of the support tube (72) has a "Y" shaped structure, and the support tube (72) and the second connecting tube (74) are located inside the second sleeve (42).

7. The segmented prefabricated cap beam according to claim 1, characterized in that, A mortar pad (8) is provided at the connection between the crossbeam (12) and the column (11).

8. The segmented prefabricated cap beam according to claim 1, characterized in that, The first splicing steel bar (31) is fixedly connected to the steel cage (14) inside the column (11), the second splicing steel bar (41) and the second sleeve (42) are fixedly connected to the steel cage (14) inside the beam (12), and the fixed steel bar (43) is fixedly connected to the steel cage (14) inside the precast slab (13).

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