Slurry leakage prevention construction method for connection joint of horizontal prefabricated part and cast-in-place structure

Abstract

The invention relates to the field of building construction, in particular to a horizontal prefabricated part and cast-in-place structure connection joint slurry leakage prevention construction method which comprises the steps that a liquid bag is manufactured, a supporting plate is manufactured according to the size of the liquid bag, and an adjustable support is arranged on the bottom face of the supporting plate; the liquid bag is placed on the supporting plate, the liquid bag is lifted to the position slightly lower than the upper side edge of the cast-in-place structure formwork through the adjustable support, and the horizontal side edge of the supporting plate abuts against the cast-in-place structure formwork; and the horizontal prefabricated part is in place, the liquid bag continues to be lifted through the adjustable support so that the liquid bag can be squeezed to the internal corner position, the abutted seam between the cast-in-place structure formwork and the horizontal prefabricated part is sealed through the liquid bag, and grout leakage at the abutted seam is avoided. The liquid bag is used for blocking the abutted seam at the internal corner position between the cast-in-place structure formwork and the horizontal prefabricated part, the tightness of the connecting part can be effectively improved, it is guaranteed that no slurry leakage phenomenon occurs between the horizontal prefabricated part and the cast-in-place structure formwork, the phenomenon that the physical performance of concrete is reduced due to slurry leakage is avoided, and the subsequent durability of the concrete is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a slurry leakage prevention construction method for a connection node between a horizontal prefabricated component and a cast-in-place structure. Background Art

[0002] At present, there are two main methods to prevent leakage when constructing joints between horizontal prefabricated components and cast-in-place structures, such as cast-in-place walls and cast-in-place beams: one is to paste a sponge strip on the upper side of the template before overlapping the horizontal prefabricated component on the template of the cast-in-place structure. However, since the reinforcement system of the cast-in-place structure and the support system of the prefabricated component are not related to each other, the prefabricated component cannot exert a certain pressure on the template, resulting in the sponge strip not being effectively squeezed, and the anti-leakage effect at the joint is poor; the second is to set a sealing template strip at the joint between the prefabricated component and the cast-in-place structure. However, since the template is mostly made of semi-rigid materials, and the manufacturing accuracy of the prefabricated component itself is problematic, there is still a gap between the prefabricated component and the cast-in-place structure, resulting in leakage. If leakage occurs between the prefabricated component and the cast-in-place structure, it will directly affect the durability of the structure. In addition, concrete leakage will greatly affect the physical properties of concrete and reduce the reliability of the structure. Summary of the invention

[0003] In view of the above problems, an embodiment of the present invention provides a method for preventing slurry leakage from connecting nodes between horizontal prefabricated components and cast-in-place structures.

[0004] An embodiment of the present invention provides a method for preventing slurry leakage in connection nodes between horizontal prefabricated components and cast-in-place structures, comprising: Complete the support of the cast-in-place structure formwork according to the construction design requirements, and determine the length of the inner angle between the upper side of the cast-in-place structure formwork and the horizontal prefabricated component; The liquid capsule is manufactured according to the determined length, and a support plate with an L-shaped cross section is manufactured according to the size of the liquid capsule, and an adjustable bracket is arranged on the bottom surface of the support plate; Place the liquid capsule on the support plate, and lift the liquid capsule to a position slightly lower than the upper side of the cast-in-place structure template through the adjustable bracket, while the horizontal side of the support plate abuts against the cast-in-place structure template; The horizontal prefabricated components are put into place according to the conventional procedures, and the liquid bag is continued to be lifted by the adjustable bracket so as to be squeezed into the inner corner. The joints between the cast-in-place structure formwork and the horizontal prefabricated components are sealed by the liquid bag to avoid leakage at the joints.

[0005] Compared with the prior art, the beneficial effect of the present invention is that the liquid bag is used to seal the joints between the cast-in-place structure formwork and the horizontal prefabricated components, which can effectively improve the tightness of the connection parts, ensure that there will be no leakage between the horizontal prefabricated components and the cast-in-place structure formwork, solve the problem of reduced physical properties of concrete caused by leakage, and ensure the subsequent durability of the concrete.

[0006] Optionally, after the cast-in-place structure template is supported, a pair of holes are opened on the cast-in-place structure template according to the position of the adjustable bracket to be supported, and hook bolts are inserted into the pair of holes; Accordingly, while continuing to lift the liquid capsule through the adjustable bracket, the hook head at one end of the hook head bolt is hooked onto the adjustable bracket, and a certain pulling force is applied to the adjustable bracket by twisting the locking nut at the other end, thereby enhancing the extrusion strength of the liquid capsule at the concave corner position.

[0007] Optionally, the hook bolt includes an intermediate section whose length matches the width of the cast-in-place structure, and rubber stop plugs are sleeved at both ends of the intermediate section. The first end of the intermediate section is provided with an external thread and connected to the hook through the external thread, and the second end is provided with an internal thread and connected to a screw through the internal thread, and a pad and a locking nut are provided on the screw; During the process of inserting the hook head bolt into the counter hole, the middle section is inserted into the counter hole, and the rubber stop plug is installed on both ends of the middle section. At the same time, the rubber stop plug is inserted into the gap between the hook head bolt and the counter hole to seal it; the hook head is screwed into the first end of the middle section close to the adjustable bracket until the hook head abuts against the outside of the adjustable bracket, the second end is screwed into the screw rod, and a gasket and a locking nut are arranged on the screw rod in sequence, and the gasket abuts against the rubber stop plug.

[0008] Optionally, the rubber slurry stopper is in a truncated cone shape.

[0009] Optionally, the cross-section of the liquid capsule is rectangular, the width of the liquid capsule is not less than the width of the support plate, and the height of the liquid capsule is greater than the height of the support plate.

[0010] Optionally, the liquid capsule adopts an integrally formed structure, and its length is not less than the length of the inner corner; or, The liquid capsule adopts a split structure and is composed of multiple sub-liquid capsules connected end to end. The sub-liquid capsules are connected to each other through connecting parts. The connecting parts include a first cylindrical connecting part and a second cylindrical connecting part that are plugged into each other. The inner wall of the first cylindrical connecting part is circumferentially provided with steel balls, and the second cylindrical connecting part is circumferentially provided with grooves that are adapted to the steel balls.

[0011] Optionally, an air bag is provided on the outer wall of the first cylindrical connecting member.

[0012] Optionally, the interior of the liquid sac is filled with a non-Newtonian fluid.

[0013] Optionally, the adjustable bracket includes a support rod that is perpendicular to and rotatably connected to the support plate, a sleeve is threadedly sleeved on the bottom end of the support rod, and a U-shaped base is provided at the bottom end of the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present application, and do not constitute a limitation of the present invention. In the drawings: Figure 1The anti-leakage slurry construction structure of the connection node between the horizontal prefabricated component and the cast-in-place structure provided by the embodiment of the present invention Figure 1 ; Figure 2 The anti-leakage slurry construction structure of the connection node between the horizontal prefabricated component and the cast-in-place structure provided by the embodiment of the present invention Figure 2 ; Figure 3 A schematic diagram of the local configuration structure of the liquid capsule provided in an embodiment of the present invention; Figure 4 A schematic diagram of the structure of a hook bolt provided in an embodiment of the present invention; Figure 5 A schematic diagram of the connection state of the split liquid capsule provided by an embodiment of the present invention; Figure 6 A schematic structural diagram of a first cylindrical connecting member provided in an embodiment of the present invention; Figure 7 A schematic structural diagram of a second cylindrical connecting member provided in an embodiment of the present invention.

[0015] Among them, 1. cast-in-place structural formwork; 2. horizontal prefabricated component; 3. liquid sac; 4. support plate; 5. adjustable bracket; 6. hook bolt; 7. intermediate section; 8. rubber slurry stopper; 9. hook; 10. screw; 11. pad; 12. locking nut; 13. sub-liquid sac; 14. connecting piece; 15. first cylindrical connecting piece; 16. second cylindrical connecting piece; 17. steel ball; 18. groove; 19. air bag. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0017] See also Figure 1-Figure 7 The embodiment of the present invention provides a method for preventing slurry leakage at a connection node between a horizontal prefabricated component and a cast-in-place structure, comprising: Step 1: Complete the support of the cast-in-place structure template 1 according to the construction design requirements, and determine the length of the inner corner position between the upper side of the cast-in-place structure template 1 and the horizontal prefabricated component 2; Step 2: manufacturing a liquid capsule 3 according to the determined length, manufacturing a support plate 4 with an L-shaped cross section according to the size of the liquid capsule 3, and arranging an adjustable bracket 5 on the bottom surface of the support plate 4; Step 3: Place the liquid capsule 3 on the support plate 4, and lift the liquid capsule 3 to a position slightly lower than the upper side of the cast-in-place structure template 1 through the adjustable bracket 5, while the horizontal side of the support plate 4 abuts against the cast-in-place structure template 1; Step 4: Complete the construction of the horizontal prefabricated component 2 in place according to the conventional process, continue to lift the liquid bag 3 through the adjustable bracket 5 so that the liquid bag 3 is squeezed into the inner corner position, and seal the joint between the cast-in-place structure template 1 and the horizontal prefabricated component 2 through the liquid bag 3 to prevent leakage at the joint.

[0018] In implementation, after the cast-in-place structure template 1 is supported, a pair of holes are opened on the cast-in-place structure template 1 according to the position of the adjustable bracket 5 to be supported, and a hook bolt 6 is inserted into the pair of holes; Accordingly, while continuing to lift the liquid capsule 3 through the adjustable bracket 5, the hook head 9 at one end of the hook head bolt 6 is hooked onto the adjustable bracket 5, and a certain pulling force is applied to the adjustable bracket 5 by screwing the locking nut 12 at the other end, thereby enhancing the extrusion strength of the liquid capsule 3 at the concave corner position.

[0019] In the implementation, the hook bolt 6 includes an intermediate section 7 whose length is adapted to the width of the cast-in-place structure, and rubber stop plugs 8 are sleeved on both ends of the intermediate section 7. The first end of the intermediate section 7 is provided with an external thread and connected to the hook head 9 through the external thread, and the second end is provided with an internal thread and coaxially connected to the screw 10 through the internal thread, and the screw 10 is provided with a pad 11 and a locking nut 12; During the process of inserting the hook head bolt 6 into the hole, the middle section 7 is first inserted into the hole, and then the rubber stop slurry plug 8 is sleeved on the two ends of the middle section 7. At the same time, the rubber stop slurry plug 8 is inserted into the gap between the hook head bolt 6 and the hole to seal it; the hook head 9 is screwed into the first end of the middle section 7 close to the adjustable bracket 5 until the hook head 9 abuts against the outer side of the adjustable bracket 5, and the second end is screwed into the screw rod 10, and a gasket 11 and a locking nut 12 are sequentially arranged on the screw rod 10, and the gasket 11 abuts against the rubber stop slurry plug 8; the hook head 9 and the screw 10 are detachable, so they can be removed for turnover after the construction is completed, thereby reducing the construction cost.

[0020] In practice, the rubber stopper 8 is in the shape of a truncated cone.

[0021] In practice, the cross section of the liquid capsule 3 is rectangular, the width of the liquid capsule 3 is not less than the width of the support plate 4 , and the height of the liquid capsule 3 is greater than the height of the support plate 4 .

[0022] In implementation, the liquid capsule 3 adopts an integrally formed structure, and its length is not less than the length of the inner corner; or, The liquid capsule 3 adopts a split structure and is composed of multiple sub-liquid capsules 13 connected end to end. The sub-liquid capsules 13 are connected to each other through a connector 14. The connector 14 includes a first cylindrical connector 15 and a second cylindrical connector 16 that are plugged into each other. The inner wall of the first cylindrical connector 15 is circumferentially provided with steel balls 17, and the second cylindrical connector 16 is circumferentially provided with grooves 18 that are compatible with the steel balls 17; the split structure can adapt to the construction requirements of working conditions with different internal angle sizes.

[0023] In practice, the outer wall of the first cylindrical connecting member 15 is covered with an air bag 19 to ensure the overall sealing performance.

[0024] In practice, the liquid capsule 3 is filled with a non-Newtonian fluid.

[0025] During implementation, the adjustable bracket 5 includes a support rod that is perpendicular to and rotatably connected to the support plate 4, a sleeve is threadedly sleeved on the bottom end of the support rod, and a U-shaped base is provided at the bottom end of the sleeve; the length of the support rod can be determined according to the height of the cast-in-place structure formwork 1, and when adjusting, the horizontal side of the support plate 4 is against the cast-in-place structure formwork 1, so by rotating the support rod, the support plate 4 can be lifted up through the threaded connection structure between the support rod and the bottom sleeve.

[0026] The solution provided in the embodiment of the present invention utilizes the liquid bag 3 to seal the joint between the cast-in-place structure formwork 1 and the horizontal prefabricated component 2, which can effectively improve the tightness of the connection part, ensure that there will be no leakage between the horizontal prefabricated component 2 and the cast-in-place structure formwork 1, solve the problem of reduced physical properties of concrete caused by leakage, and ensure the subsequent durability of the concrete.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A method for preventing slurry leakage at the connection node between a horizontal prefabricated component and a cast-in-place structure, characterized in that: include: Complete the support of the cast-in-place structure formwork according to the construction design requirements, and determine the length of the inner angle between the upper side of the cast-in-place structure formwork and the horizontal prefabricated component; The liquid capsule is manufactured according to the determined length, and a support plate with an L-shaped cross section is manufactured according to the size of the liquid capsule, and an adjustable bracket is arranged on the bottom surface of the support plate; Place the liquid capsule on the support plate, and lift the liquid capsule to a position slightly lower than the upper side of the cast-in-place structure template through the adjustable bracket, while the horizontal side of the support plate abuts against the cast-in-place structure template; The horizontal prefabricated components are put into place according to the conventional procedures, and the liquid bag is continued to be lifted by the adjustable bracket so as to be squeezed into the inner corner. The joints between the cast-in-place structure formwork and the horizontal prefabricated components are sealed by the liquid bag to avoid leakage at the joints.

2. The method for preventing leakage of slurry at the connection node between horizontal prefabricated components and cast-in-place structures as claimed in claim 1 is characterized in that: After the cast-in-place structure template is supported, a pair of holes are opened on the cast-in-place structure template according to the position of the adjustable bracket to be supported, and hook bolts are inserted into the pair of holes; Accordingly, while continuing to lift the liquid capsule through the adjustable bracket, the hook head at one end of the hook head bolt is hooked onto the adjustable bracket, and a certain pulling force is applied to the adjustable bracket by twisting the locking nut at the other end, thereby enhancing the extrusion strength of the liquid capsule at the concave corner position.

3. The method for preventing slurry leakage at the connection node between the horizontal prefabricated component and the cast-in-place structure as claimed in claim 2, characterized in that: The hook bolt includes an intermediate section whose length matches the width of the cast-in-place structure, and rubber stop plugs are sleeved at both ends of the intermediate section. The first end of the intermediate section is provided with an external thread and connected to the hook head through the external thread, and the second end is provided with an internal thread and connected to the screw through the internal thread, and a pad and a locking nut are provided on the screw. During the process of inserting the hook head bolt into the counter hole, the middle section is inserted into the counter hole, and the rubber stop plug is installed on both ends of the middle section. At the same time, the rubber stop plug is inserted into the gap between the hook head bolt and the counter hole to seal it; the hook head is screwed into the first end of the middle section close to the adjustable bracket until the hook head abuts against the outside of the adjustable bracket, the second end is screwed into the screw rod, and a gasket and a locking nut are arranged on the screw rod in sequence, and the gasket abuts against the rubber stop plug.

4. The method for preventing slurry leakage at the connection node between the horizontal prefabricated component and the cast-in-place structure as claimed in claim 3, characterized in that: The rubber stopper is in the shape of a truncated cone.

5. The method for preventing slurry leakage at the connection node between the horizontal prefabricated component and the cast-in-place structure according to claim 1, characterized in that: The cross section of the liquid sac is rectangular, the width of the liquid sac is not less than the width of the supporting plate, and the height of the liquid sac is greater than the height of the supporting plate.

6. The method for preventing slurry leakage at the connection node between the horizontal prefabricated component and the cast-in-place structure as claimed in claim 5, characterized in that: The liquid capsule adopts an integrally formed structure, and its length is not less than the length of the inner corner; or, The liquid capsule adopts a split structure and is composed of multiple sub-liquid capsules connected end to end. The sub-liquid capsules are connected to each other through connecting parts. The connecting parts include a first cylindrical connecting part and a second cylindrical connecting part that are plugged into each other. The inner wall of the first cylindrical connecting part is circumferentially provided with steel balls, and the second cylindrical connecting part is circumferentially provided with grooves that are adapted to the steel balls.

7. The method for preventing slurry leakage at the connection node between the horizontal prefabricated component and the cast-in-place structure as claimed in claim 6, characterized in that: An air bag is sleeved on the outer wall of the first cylindrical connecting piece.

8. The method for preventing slurry leakage at the connection node between the horizontal prefabricated component and the cast-in-place structure according to claim 1, characterized in that: The interior of the sac is filled with a non-Newtonian fluid.

9. The method for preventing slurry leakage at the connection node between the horizontal prefabricated component and the cast-in-place structure according to claim 1, characterized in that: The adjustable bracket comprises a support rod which is vertically connected to the supporting plate and is rotatably connected. A sleeve is threadedly sleeved on the bottom end of the support rod, and a U-shaped base is arranged on the bottom end of the sleeve.

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