CN111173042A - Advanced water stop post-cast strip of foundation slab and construction method - Google Patents
Advanced water stop post-cast strip of foundation slab and construction method Download PDFInfo
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- CN111173042A CN111173042A CN201911392690.9A CN201911392690A CN111173042A CN 111173042 A CN111173042 A CN 111173042A CN 201911392690 A CN201911392690 A CN 201911392690A CN 111173042 A CN111173042 A CN 111173042A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
- E02D31/025—Draining membranes, sheets or fabric specially adapted therefor, e.g. with dimples
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2450/00—Gaskets
- E02D2450/10—Membranes
- E02D2450/105—Membranes impermeable
- E02D2450/106—Membranes impermeable for liquids
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Abstract
The invention relates to a foundation slab advanced water stop post-cast strip, which comprises a foundation slab advanced water stop post-cast strip structure, a post-cast strip easily-disassembled inner support structure, a prefabricated cover plate post-cast strip water stop temporary sealing structure and a movable post-cast strip pouring frame; the structure of the advanced water stop post-cast strip of the foundation slab comprises a structural layer, a cushion layer, a plastic water stop paste and a wood pad; the easily-disassembled inner supporting structure of the post-pouring belt comprises a steel wire mesh with a quick and easy closing-up function, a water stop steel plate and a wood plate; the prefabricated cover plate post-cast strip water stop temporary sealing structure comprises a temporary sealing cover plate, a central locking bolt nut and an expansion bolt nut; the movable post-cast strip pouring frame comprises a pouring frame support column, a pulley support rod and a main body support column. The invention has the beneficial effects that: the wedge-shaped water stop belt is adopted, and because a large amount of water swelling agent is filled in the wedge-shaped water stop belt, the water stop belt can swell when encountering water, and the wedge-shaped water stop belt enables the surrounding structure to be firmer due to swelling, so that the structure is very stable.
Description
Technical Field
The invention relates to a foundation slab post-cast strip, in particular to a foundation slab advanced water stop post-cast strip and a construction method thereof.
Background
In order to prevent harmful cracks possibly generated by uneven temperature and shrinkage of a cast-in-place reinforced concrete structure in the construction process, temporary construction joints are reserved at corresponding positions of a foundation slab, a wall and a beam during construction in the former period according to design or construction specification requirements, the structure is temporarily divided into a plurality of parts by the temporary construction joints, the parts are shrunk through the inside of the components, concrete is poured and tamped at each temporary construction joint during construction in the later period, and the structures are connected into a whole. The post-cast strip is concrete poured and pounded at the temporary construction joint. High-rise and super high-rise buildings are more and more in modern building construction, and foundation parts of the buildings are deeper and deeper. The post-cast strip of foundation slab and wall body adopts traditional post-cast strip to reserve the mode of establishing mostly, and the post-cast strip must pour the post-cast strip concrete after the major structure construction is accomplished, therefore must continuously carry out precipitation in order to guarantee that the groundwater level is below the foundation slab. Long-term precipitation not only increases construction cost, but also wastes underground water resources. In addition, for deep underground foundation engineering, if earth is not quickly backfilled after the foundation is finished, potential hazards are brought to the safety of the foundation engineering, and the construction of other procedures can be influenced without backfilling the foundation earth, so that the construction period of the engineering is influenced.
In recent years, the problems are solved by adopting an advanced water-stop post-cast strip construction technology, wherein the advanced water-stop strip is formed by adding a telescopic concrete bottom plate or a guide wall at a temporary construction joint during early construction, and arranging a rubber water-stop strip at the expansion joint. Such a water stop used at the post-cast position and cast prior to the post-cast is called a leading water stop. The advanced water stop belts are all related to the retention of an expansion joint in the middle of the advanced water stop belt, an extruded polystyrene board or a wood fiber asphalt board is filled in the expansion joint, and a rubber water stop belt is arranged in the middle of the expansion joint. However, the structure has certain defects, and the rubber waterstop is easy to deviate and crack in the concrete pouring construction due to poor fixation; the extruded polystyrene board or the wood fiber asphalt board has insufficient strength to cause deformation in construction. The defects can cause the leading water stop to leak water, bring adverse effects to the water prevention of the post-pouring strip and seriously bring adverse effects to the building safety.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an advanced water stop post-cast strip of a foundation slab and a construction method.
The foundation slab advanced water-stop post-cast strip comprises a foundation slab advanced water-stop post-cast strip structure, a post-cast strip easy-to-dismount inner support structure, a prefabricated cover plate post-cast strip water-stop temporary sealing structure and a movable post-cast strip pouring frame;
the foundation slab advanced water stop post-cast strip structure comprises a structure layer, a cushion layer, a plastic water stop paste, a water stop strip wooden template, micro-expansion waterproof concrete, an outer wall, a wedge-shaped water stop strip and a wood pad; a cushion layer is arranged on the structural layer, and a plastic waterproof paste is arranged on the cushion layer; arranging a wood pad and a wedge-shaped water stop belt on the plastic water stop paste, and arranging micro-expansion waterproof concrete above the wedge-shaped water stop belt; the template comprises a waterstop wooden template and a waterstop steel template;
the easily-disassembled inner support structure of the post-pouring belt comprises a support batten, a fast and easy-to-close steel wire mesh, a support steel bar, a pin hole, a water stop steel plate, a support rod, a shaft sleeve, a pin shaft support, a steel plate, a butterfly bolt and a wood plate; the supporting steel bars are connected through supporting battens, and quick and easy closing steel wire meshes are arranged on two sides of the post-cast strip; the water stop steel plate is arranged between the supporting steel bars; the pin shaft support penetrates through a pin hole in the supporting steel bar and is fixed on a steel plate of the wood plate through a butterfly bolt; the supporting steel bars in opposite positions are connected with each other through the supporting rods and the shaft sleeves;
the prefabricated cover plate post-cast strip water stop temporary sealing structure comprises an outer wall, a temporary sealing cover plate, flat steel, a central locking bolt nut, angle steel, an expansion bolt and an expansion bolt nut; the angle steel is arranged at the edge of the outer wall at two sides of the post-cast strip respectively and is of a Z-shaped structure; the flat steel is arranged in a cross shape, the end part of the flat steel is fixed with the angle steel through an expansion bolt and an expansion bolt nut, and the center of the flat steel is fixed through an expansion bolt and a center locking bolt nut; a temporary cover plate is arranged above the flat steel and the angle steel;
the movable post-cast strip casting frame comprises a bottom plate, a casting frame support column, a pulley support rod and a main body support column; wheels are arranged below the bottom plate; the pouring frame support columns are distributed on the bottom plate in a matrix manner, a main body support column is erected in the rectangular center of the pouring frame support columns, the main body support column is of an L-shaped structure, and the end parts of the main body support columns are connected with a concrete pouring barrel; a pulley supporting rod is also vertically arranged on the bottom plate.
Preferably, the method comprises the following steps: the middle of the wedge-shaped water stop is filled with a water swelling agent; the waterstop wood formwork is arranged on the outer side of the wedge-shaped waterstop, and the waterstop steel formwork is arranged on the inner side of the outer wall.
Preferably, the method comprises the following steps: the supporting battens and the supporting steel bars are fixed through super glue; the fast and easy closing steel wire mesh is separated from the concrete side surface of the post-cast strip, and the fast and easy closing steel wire mesh is fixed on the supporting steel bars.
Preferably, the method comprises the following steps: the end part of the pin shaft support is connected with one end of a support rod, and the other end of the support rod is connected with a shaft sleeve in a sleeve mode; two fixing plates are arranged between the two shaft sleeves and are fixedly connected through a spiral nut and a spiral bolt; the steel plate is arranged on the outer side of the wood plate, the exposed steel bars are arranged at the top of the wood plate, and the protection frames are arranged on the upper portion and the lower portion of the wood plate.
Preferably, the method comprises the following steps: the horizontal section of the angle steel is parallel to the upper end face of the outer wall, the vertical section of the angle steel is parallel to the side end face of the outer wall, and the horizontal section at the lower part of the angle steel is provided with a guide groove along the length direction; the two flat steel end parts which are arranged in a cross shape are respectively connected to the guide grooves at the lower parts of the two angle steels; a gasket is laid on the lower surface of the angle steel; the expansion bolt and the central locking bolt nut are fixed at the central overlapping position of the angle steel.
Preferably, the method comprises the following steps: the pulley supporting rod penetrates through the main body supporting column; the end part of the pulley supporting rod is provided with a pulley; the concrete pouring barrel is provided with a lifting ring, and the steel cable passes through the lifting ring and the pulley and is connected with the winch; an inner tooth socket is arranged at the connecting part of the main body supporting column and the concrete pouring barrel, and a detachable locking rod is arranged in the inner tooth socket; a pouring frame platform is arranged above the pouring frame support column.
The construction method of the advanced water stop post-cast strip of the foundation slab comprises the following construction steps:
1) arranging a cushion layer on the structural layer, wherein the cushion layer is 5-10 cm, and then arranging a plastic water stop paste and a bottom plate steel bar on the cushion layer; then arranging a wedge-shaped water stop belt on the plastic water stop paste, filling a water swelling agent in the wedge-shaped water stop belt, and arranging prefabricated micro-expansion waterproof concrete above the wedge-shaped water stop belt;
2) arranging a waterstop wooden template on the outer side of the wedge-shaped waterstop, arranging a waterstop strip steel template on the inner side of the outer wall and the outer side of the micro-expansion waterproof concrete, then arranging supporting steel bars on two sides of the post-cast strip, arranging supporting battens between the supporting steel bars, and arranging quick and easy closing steel wire meshes on two sides of the post-cast strip;
3) wood plates are arranged outside the supporting steel bars on the two sides of the post-cast strip, and exposed steel bars are arranged at the tops of the wood plates; the upper and lower parts of the wood board are also provided with protective frames; mounting the pin shaft support on a steel plate on a wood plate, and reinforcing the pin shaft support through butterfly bolts;
4) one end of a pin shaft support penetrates through the pin hole in a sleeved mode, the other end of the pin shaft support is connected with one end of a supporting rod, and the other end of the supporting rod is connected with the shaft sleeve in a sleeved mode; two fixing plates are arranged between the shaft sleeves and are connected in a reinforcing manner through a spiral nut and a spiral bolt; then the water stop steel plate is arranged between the supporting steel bars;
5) then manufacturing a prefabricated cover plate post-cast strip water-stopping temporary sealing structure; firstly, prefabricating various structural materials in a factory, wherein the structural materials comprise temporary cover plates and angle steels; installing angle steel at the edge of the outer wall, laying a layer of gasket on the lower part of the angle steel, and fixedly connecting the flat steel and the angle steel through an expansion bolt and an expansion bolt nut;
6) the flat steel is distributed in a crossed manner, and a fixing device is arranged at the center of the flat steel; firstly, an expansion bolt penetrates through flat steel, a central locking bolt nut is arranged on the expansion bolt and is fixed by a reinforcing nut, and then a temporary cover plate is laid on angle steel and the flat steel;
7) then manufacturing a movable post-cast strip pouring frame; wheels are arranged at the lower part of the bottom plate, then a pouring frame support column is arranged on the bottom plate, and a main body support column is arranged at the center of a rectangle presented by the pouring frame support column; then, a pulley supporting rod is arranged; a hole is reserved on the main body supporting column, the pulley supporting rod is vertical to the bottom plate and penetrates through the main body supporting column, a stiffening plate is welded on the lower portion of the contact position of the main body supporting column and the pulley supporting rod, and a pulley is installed at the upper end portion of the pulley supporting rod; a hoisting ring is reserved in the concrete pouring barrel, and a steel cable penetrates through the hoisting ring and the pulley and is connected with a winch;
8) reserving an inner tooth socket and a locking rod at the end part of the main body supporting column, and finally connecting the concrete pouring barrel to the main body supporting column; and pouring the part of the water stop belt needing post-pouring after the other main body structures are finished, so that the construction of the foundation slab advanced water stop post-pouring belt is finished.
The invention has the beneficial effects that:
1. the wedge-shaped water stop belt is adopted, and because a large amount of water swelling agent is filled in the wedge-shaped water stop belt, the water stop belt can swell when encountering water, and the wedge-shaped water stop belt enables the surrounding structure to be firmer due to swelling, so that the structure is very stable, and the water stop belt is simple to manufacture and has high technical benefit.
2. The angle steel flat steel structure is arranged in the prefabricated cover plate post-cast strip water-stop temporary sealing structure, the erection is simple, materials are easy to obtain, the structure is firm, the disassembly is convenient, a cover sealing system can be opened in time, manpower and material resources are saved, and the prefabricated cover plate post-cast strip water-stop temporary sealing structure has good economic benefits.
3. The template of the invention can be greatly recycled in the using process, thereby saving the cost.
Drawings
FIG. 1 is a schematic view of the bottom of a post-cast strip for advanced water stop of a foundation slab;
FIG. 2 is a schematic view of a foundation slab post-cast strip steel wood formwork with advanced water stopping;
FIG. 3 is a schematic diagram of a fast and easy closing steel wire mesh of a post-cast strip detachable inner support structure;
FIG. 4 is a top view of a removable inner support structure of a post-cast strip;
FIG. 5 is a schematic illustration of an inner support pin support and protection;
FIG. 6 is a schematic view of an edge fixing structure of a prefabricated cover plate post-cast strip water-stop temporary closing structure;
FIG. 7 is a top view of a prefabricated decking post-cast strip water stop temporary enclosure;
FIG. 8 is a schematic view of a central fixed structure of a prefabricated cover plate post-cast strip water-stop temporary closing structure;
FIG. 9 is a schematic view of a mobile post-cast strip cast house;
fig. 10 is a schematic view of the connection structure of the casting frame and the concrete casting barrel.
Description of reference numerals: 1-structural layer; 2-cushion layer; 3-plastic waterproof paste; 4-water stop wooden template; 5-water stopping strip steel template making; 6-micro-expansion waterproof concrete; 7-a water swellable agent; 8-outer wall; 9-a wedge-shaped water stop; 10-supporting the wood strips; 11-a quick and easy closing steel wire mesh; 12-supporting the reinforcing steel bars; 13-pin shaft support; 14-a support bar; 15-pin holes; 16-water stop steel plate; 17-a shaft sleeve; 18-screw nuts; 19-a screw bolt; 20-fixing the plate; 21-bare steel bars; 22-a protective frame; 23-wood board; 24-a steel plate; 25-butterfly bolts; 26-a wood pad; 27-a gasket; 28-angle steel; 29-temporary cover sealing plate; 30-flat steel; 31-expansion bolt and nut; 32-expansion bolts; 33-center lock bolt and nut; 34-a winch; 35-a steel cord; 36-a pulley; 37-a pulley support bar; 38-a lifting ring; 39-body support post; 40-internal gullet; 41-a locking bar; 42-casting frame support column; 43-bottom plate.
Detailed Description
The present invention will be further described with reference to the following examples. The following examples are set forth merely to aid in the understanding of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
According to the drawings of fig. 1 and fig. 2, a cushion layer 2 is arranged on a structural layer 1, the cushion layer 2 is 5-10 cm, and then a plastic waterproof paste 3 and a bottom plate steel bar to be arranged are arranged on the cushion layer 2. Then a wedge-shaped water stop belt 9 is arranged on the plastic water stop paste 3, a water swelling agent 7 is filled in the wedge-shaped water stop belt 9, and the prefabricated micro-expansion waterproof concrete 6 is arranged on the wedge-shaped water stop belt 9.
According to the scheme shown in the figures 2 and 3, a water stop wooden template 4 is arranged on the outer side of a wedge-shaped water stop 9, a water stop strip wooden template 5 is arranged on the inner side of an outer wall 8 and the outer side of micro-expansion waterproof concrete, supporting steel bars 12 are arranged on two sides of a post-cast strip, supporting wood bars 10 are arranged between the supporting steel bars 12, the internal fixation effect is mainly achieved, and quick and easy closing steel wire meshes 11 are arranged on two sides of the post-cast strip.
As shown in fig. 4 and 5, the supporting bars 12 on both sides of the post-cast strip are additionally provided with wood plates 23, and the tops of the wood plates 23 are required to be provided with exposed bars 21 for connecting the superstructure. The upper and lower parts of the wooden board 23 are also provided with protective frames 22 for protecting the whole structure. The pin support 13 is mounted on a steel plate 24 on the wood plate 23 and is reinforced by a butterfly bolt 25.
One end of the pin shaft support 13 penetrates through the pin hole 15, the other end of the pin shaft support 13 is connected with one end of the support rod 14, and the other end of the support rod 14 is connected with the shaft sleeve 17 in a sleeve mode. Two fixing plates 20 are arranged between the shaft sleeves 17, and the two fixing plates 20 are connected in a reinforcing manner through a screw nut 18 and a screw bolt 19. And the water stop steel plate 16 is installed between the support bars 12. After the following series of steps is completed, the structure can be concreted and the concrete can be set for the first time.
According to the steps shown in fig. 6, fig. 7 and fig. 8, a prefabricated cover plate post-cast strip water-stopping temporary sealing structure is manufactured. Various structural materials, such as temporary cover plates 29, angle steel 28 and the like, are prefabricated in a factory and can be timely conveyed when needed in a construction site. The angle steel 28 is installed at the edge of the outer wall 8, a layer of gasket 27 is laid on the lower portion of the angle steel 28, the gasket 27 is used for protecting the structure of the angle steel 28 and a flat steel 30, and the flat steel 30 and the angle steel 28 are fixedly connected through an expansion bolt 32 and an expansion bolt nut 31. The flat bars 30 are distributed in a cross shape, so that a fixing means is required at the center of the flat bars 30 to prevent deformation. Firstly, an expansion bolt 32 penetrates through a flat steel 30, a central locking bolt nut 33 is arranged on the expansion bolt 32, the central locking bolt nut 33 is fixed by a reinforcing nut, and after a series of structures are completed, a temporary cover sealing plate 29 can be laid on an angle steel 28 and the flat steel 30.
As shown in fig. 9 and 10, a movable post-cast strip casting frame is manufactured. Wheels are mounted on the lower portion of the base plate 43, four of the pour frame support posts 42 are then set up on the base plate 43, and a main body support post 39 is then set up in the center of the rectangle presented by the four pour frame support posts 42. Then, the pulley support rod 37 is further provided. Holes are reserved in the main body supporting columns 39, the pulley supporting rods 37 stand on the bottom plate 43 and penetrate through the main body supporting columns 39, a stiffening plate is welded to the lower portions of the contact positions of the main body supporting columns 39 and the pulley supporting rods 37, and pulleys 36 are mounted at the end portions of the pulley supporting rods 37. The concrete pouring bucket is reserved with a hoisting ring 38, and the steel cable 35 is passed through the hoisting ring 38 and the pulley 36 and connected to the hoist 34. An inner tooth socket 40 and a locking rod 41 are reserved at the end part of the main body supporting column 39, finally, a concrete pouring barrel is connected to the main body supporting column 39, and the part of the water stop belt needing post-pouring is poured after other main body structures are finished, so that the advanced water stop post-pouring belt of the foundation slab is finished.
Claims (7)
1. The utility model provides a base plate is water area after stagnant water in advance which characterized in that: the prefabricated cover plate post-cast strip water-stopping temporary sealing structure comprises a foundation bottom plate advanced water-stopping post-cast strip structure, a post-cast strip easily-detachable inner support structure, a prefabricated cover plate post-cast strip water-stopping temporary sealing structure and a movable post-cast strip pouring frame;
the advanced water stop post-cast strip structure of the foundation slab comprises a structural layer (1), a cushion layer (2), a plastic water stop paste (3), a water stop wooden template (4), a water stop steel template (5), micro-expansion waterproof concrete (6), an outer wall (8), a wedge-shaped water stop (9) and a wood pad (26); a cushion layer (2) is arranged on the structural layer (1), and a plastic waterproof sticker (3) is arranged on the cushion layer (2); a wooden pad (26) and a wedge-shaped water stop belt (9) are arranged on the plastic water stop paste (3), and micro-expansion waterproof concrete (6) is arranged above the wedge-shaped water stop belt (9); the template comprises a waterstop wooden template (4) and a waterstop steel template (5);
the easy-to-dismount inner support structure of the post-pouring belt comprises support battens (10), a quick-easy-to-close steel wire mesh (11), support reinforcing steel bars (12), pin holes (15), a water stop steel plate (16), support rods (14), shaft sleeves (17), a pin shaft support (13), a steel plate (24), butterfly bolts (25) and wood plates (23); the supporting steel bars (12) are connected through supporting battens (10), and steel wire meshes (11) with fast and easy closing-up are arranged on two sides of the post-cast strip; the water stop steel plate (16) is arranged between the supporting steel bars (12); the pin shaft support (13) penetrates through a pin hole (15) in the supporting steel bar (12), and the pin shaft support (13) is fixed on a steel plate (24) of the wood plate (23) through a butterfly bolt (25); the supporting steel bars (12) which are opposite in position are connected with each other through a supporting rod (14) and a shaft sleeve (17);
the prefabricated cover plate post-cast strip water stop temporary sealing structure comprises an outer wall (8), a temporary sealing cover plate (29), flat steel (30), a central locking bolt nut (33), angle steel (28), an expansion bolt (32) and an expansion bolt nut (31); the angle steel (28) is respectively arranged at the edges of the outer walls (8) at the two sides of the post-cast strip, and the angle steel (28) is of a Z-shaped structure; the flat steel (30) is arranged in a cross manner, the end part of the flat steel (30) is fixed with the angle steel (28) through an expansion bolt (32) and an expansion bolt nut (31), and the center of the flat steel (5) is fixed through the expansion bolt (32) and a center locking bolt nut (33); a temporary sealing cover plate (29) is arranged above the flat steel (30) and the angle steel (28);
the movable post-cast strip casting frame comprises a bottom plate (43), a casting frame support column (42), a pulley support rod (37) and a main body support column (39); wheels are arranged below the bottom plate (43); the pouring frame supporting columns (42) are distributed on the bottom plate (43) in a matrix manner, a main body supporting column (39) is erected in the rectangular center of the pouring frame supporting columns (42), the main body supporting column (39) is of an L-shaped structure, and the end parts of the main body supporting columns (39) are connected with a concrete pouring barrel; a pulley supporting rod (37) is also vertically arranged on the bottom plate (2).
2. The advanced water stop post-cast strip of foundation slab as claimed in claim 1, which is characterized in that: the wedge-shaped water stop (9) is filled with a water swelling agent (7); the waterstop wooden template (4) is arranged on the outer side of the wedge-shaped waterstop (9), and the waterstop steel wooden template (5) is arranged on the inner side of the outer wall (8).
3. The advanced water stop post-cast strip of foundation slab as claimed in claim 1, which is characterized in that: the supporting battens (10) and the supporting steel bars (12) are fixed through super glue; the fast and easy closing-up steel wire mesh (11) is separated from the concrete side surface of the post-poured strip, and the fast and easy closing-up steel wire mesh (11) is fixed on the supporting steel bar (12).
4. The advanced water stop post-cast strip of foundation slab as claimed in claim 1, which is characterized in that: the end part of the pin shaft support (13) is connected with one end of a support rod (14), and the other end of the support rod (14) is connected with a shaft sleeve (17) in a sleeve mode; two fixing plates (20) are arranged between the two shaft sleeves (17), and the two fixing plates (20) are connected in a reinforcing manner through a spiral nut (18) and a spiral bolt (19); the steel plate (24) is arranged on the outer side of the wood plate (23), the exposed steel bars (21) are installed on the top of the wood plate (23), and the protection frames (22) are installed on the upper portion and the lower portion of the wood plate (23).
5. The advanced water stop post-cast strip of foundation slab as claimed in claim 1, which is characterized in that: the horizontal section of the angle steel (28) is parallel to the upper end face of the outer wall (8), the vertical section of the angle steel (28) is parallel to the side end face of the outer wall (8), and the horizontal section at the lower part of the angle steel (28) is provided with a guide groove along the length direction; the end parts of the two flat steels (30) which are arranged in a cross shape are respectively connected to the guide grooves at the lower parts of the two angle steels (28); a gasket (27) is laid on the lower surface of the angle steel (28); the expansion bolt (32) and the central locking bolt nut (33) are fixed at the central overlapping position of the angle steel (28).
6. The advanced water stop post-cast strip of foundation slab as claimed in claim 1, which is characterized in that: the pulley supporting rod (37) penetrates through the main body supporting column (39); a pulley (36) is arranged at the end part of the pulley supporting rod (37); the concrete pouring barrel is provided with a hanging ring (38), and a steel cable (35) passes through the hanging ring (38) and the pulley (36) and is connected with the winch (34); an inner tooth groove (40) is formed in the connecting part of the main body supporting column (15) and the concrete pouring barrel, and a detachable locking rod (41) is installed on the inner tooth groove (40); a pouring frame platform is arranged above the pouring frame support pillar (42).
7. The construction method of the foundation slab advanced water stop post-cast strip according to claim 1, characterized by comprising the following construction steps:
1) arranging a cushion layer (2) on the structural layer (1), wherein the cushion layer (2) is 5-10 cm, and then arranging a plastic water stop paste (3) and a bottom plate steel bar on the cushion layer (2); then arranging a wedge-shaped water stop belt (9) on the plastic water stop paste (3), filling a water swelling agent (7) in the wedge-shaped water stop belt (9), and arranging prefabricated micro-expansion waterproof concrete (6) above the wedge-shaped water stop belt (9);
2) a waterstop wooden template (4) is arranged on the outer side of the wedge-shaped waterstop (9), a waterstop strip wooden template (5) is arranged on the inner side of an outer wall (8) and the outer side of the micro-expansion waterproof concrete (6), supporting steel bars (12) are arranged on two sides of the post-cast strip, supporting battens (10) are arranged between the supporting steel bars (12), and quick and easy closing-up steel wire meshes (11) are arranged on two sides of the post-cast strip;
3) wood plates (23) are arranged outside the supporting steel bars (12) on the two sides of the post-cast strip, and exposed steel bars (21) are arranged at the tops of the wood plates (23); the upper and lower parts of the wood board (23) are also provided with a protective frame (22); mounting the pin shaft support (13) on a steel plate (24) on a wood plate (23), and reinforcing the pin shaft support by a butterfly bolt (25);
4) one end of a pin shaft support (13) penetrates through a pin hole (15), the other end of the pin shaft support (13) is connected with one end of a support rod (14), and the other end of the support rod (14) is connected with a shaft sleeve (17) in a sleeve mode; two fixing plates (20) are arranged between the shaft sleeves (17), and the two fixing plates (20) are connected in a reinforcing way through a spiral nut (18) and a spiral bolt (19); then the water stop steel plate (16) is arranged between the support steel bars (12);
5) then manufacturing a prefabricated cover plate post-cast strip water-stopping temporary sealing structure; firstly, prefabricating various structural materials in a factory, wherein the structural materials comprise a temporary cover plate (29) and angle steel (28); installing angle steel (28) at the edge of an outer wall (8), laying a layer of gasket (27) on the lower part of the angle steel (28), and fixedly connecting a flat steel (30) and the angle steel (28) through an expansion bolt (32) and an expansion bolt nut (31);
6) the flat steel (30) is distributed in a cross shape, and a fixing device is arranged at the center of the flat steel (30); firstly, an expansion bolt (32) penetrates through a flat steel (30), a central locking bolt nut (33) is arranged on the expansion bolt (32), the central locking bolt nut (33) is fixed by a reinforcing nut, and then a temporary cover plate (29) is laid on an angle steel (28) and the flat steel (30);
7) then manufacturing a movable post-cast strip pouring frame; wheels are arranged on the lower portion of the bottom plate (43), then a pouring frame supporting column (42) is arranged on the bottom plate (43), and a main body supporting column (39) is arranged in the center of a rectangle presented by the pouring frame supporting column (42); then a pulley supporting rod (37) is arranged; holes are reserved in the main body supporting columns (39), the pulley supporting rods (37) stand on the bottom plate (43) and penetrate through the main body supporting columns (39), a stiffening plate is welded on the lower portions of the contact positions of the main body supporting columns (39) and the pulley supporting rods (37), and pulleys (36) are mounted at the upper end portions of the pulley supporting rods (37); a hanging ring (38) is reserved in the concrete pouring barrel, and a steel cable (35) penetrates through the hanging ring (38) and the pulley (36) and is connected with a winch (34);
8) reserving an inner tooth groove (40) and a locking rod (41) at the end part of the main body supporting column (39), and finally connecting the concrete pouring barrel to the main body supporting column (39); and pouring the part of the water stop belt needing post-pouring after the other main body structures are finished, so that the construction of the foundation slab advanced water stop post-pouring belt is finished.
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| CN114837231A (en) * | 2022-04-27 | 2022-08-02 | 浙江乔兴建设集团有限公司 | Integral casting structure for advanced water stop of post-cast strip and construction method |
| CN115012456A (en) * | 2022-05-20 | 2022-09-06 | 中国建筑第五工程局有限公司 | Water stop structure for building foundation and construction method thereof |
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| CN115012456B (en) * | 2022-05-20 | 2024-01-26 | 中国建筑第五工程局有限公司 | Water stopping structure for building foundation and construction method thereof |
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| CN111173042B (en) | 2021-11-30 |
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