CN112796524A - Universal base for floor formwork lifting and construction method thereof - Google Patents

Abstract

The invention discloses a universal base for a floor formwork lifting and a construction method thereof. The invention has the beneficial effects that: the method has the characteristics of accurate positioning, convenient and fast installation, strong universality, safety and stability and the like, can replace traditional secondary pouring methods, reinforcing steel bar support methods, cushion block support methods and other suspended formwork supporting methods, eliminates the quality defects of formwork expansion, slurry leakage, slab staggering and the like commonly existing in suspended formwork construction, effectively prevents potential safety hazards caused by illegal spot welding of stressed reinforcing steel bars, improves the integrity and self-waterproof capability of a concrete structure, fundamentally ensures the construction quality and waterproof performance of a floor upturning structure, and thoroughly solves the common quality problem of leakage at the root of a wall body of a building.

Description

Universal base for floor formwork lifting and construction method thereof

Technical Field

The invention relates to the technical field of floor hanging molds, in particular to a universal base for a floor hanging mold and a construction method thereof.

Background

The hanging mould is also called a hanging mould, is a mould plate which can not be supported by falling to the ground and is suspended on other fixed objects, is generally used for parts with height difference such as a floor upturning structure, and has the most obvious difference with other mould plate construction that the bottom is not supported or is supported and fixed in a special mode to bear lateral load and keep the stability of the hanging mould plate, thereby ensuring that the levelness and the verticality of a cast-in-place concrete component meet the requirements.

In the prior art, a floor formwork hoisting structure generally adopts two modes of integral casting and secondary joint casting with a floor panel, when the secondary casting method is adopted, measures such as chiseling and cleaning of a joint part of the floor are not in place, the treatment effect on a base layer is difficult to meet the standard requirement, a horizontal construction joint is formed between separately cast structures, the bonding force and integrity of a joint part are poor, serious leakage hidden danger exists, and the construction quality and the waterproof effect of the structure cannot be ensured; meanwhile, the side mold reinforcing method of the secondary pouring structure generally adopts the mode of drilling holes and anchoring reinforcing steel bars on a cast-in-place plate to fix a template, and a plurality of vertical holes are formed in the cast-in-place plate, so that the hidden danger of vertical leakage is increased for a cast-in-place floor, particularly the ground with a water room; in addition, the secondary pouring structure belongs to sporadic concrete members, the field attention degree and the supervision strength are often insufficient, a construction team and a group easily have the idea of paralysis, templates, supports and the like are mostly incomplete materials which are repeatedly turned over, the concrete volume is small and is mostly stirred on the field, the finished product quality is easily rough, and the design function cannot be met.

Therefore, in order to ensure the construction quality and waterproof effect of the cast-in-place concrete structure, the construction scheme of integrally pouring the floor slab and the floor formwork structure should be preferably adopted. In the conventional process technology at present, the following two methods are generally adopted for supporting and fixing the integrally formed template of the floor suspended formwork:

1. a steel bar support method: and vertically welding I-shaped positioning ribs on the bound beam plate steel bars according to the elevation of the bottom of the hanging die, wherein the positioning ribs are made of steel bars with the diameter of more than phi 12, then supporting the two side dies on the positioning ribs, locking the upper parts of the side dies by using split bolts, supporting and reinforcing by using an inclined support in a matched manner, and finally straightening the side dies by pulling through wires.

The construction method has the advantages of multiple operation procedures, large material and labor investment, time and labor consuming operation, higher cost and low working efficiency, and a large number of measure ribs and supports need to be configured; the stability of the beam slab steel bar is poor, the overall strength and the deformation resistance of a suspended formwork on the beam slab steel bar are insufficient, the suspended formwork cannot bear the construction load in the concrete pouring process, the suspended formwork is stressed to incline outwards or displace, the suspended formwork deforms, or the suspended formwork is settled under the vertical load, the bottom of the suspended formwork is embedded in the cast-in-place slab concrete, the structural defect is formed, and the template cannot be dismantled; the positioning ribs and the stressed reinforcing steel bars of the beam plate are welded in an arc spot welding mode, the spot welding causes undercut and burn to the stressed reinforcing steel bars, the effective section of the reinforcing steel bars is reduced, stress concentration is generated, and the stress performance and the structural safety are influenced; the seam part of the hanging mould is not easy to support stably on the positioning rib, which can cause uneven joints of the side mould and dislocation of planes, and can cause quality defects of slurry leakage of the side mould, dislocation of components and the like.

2. A cushion block supporting method: mortar or concrete cushion blocks are arranged on a bottom die of the cast-in-place plate at certain intervals, the height of each cushion block is the same as the thickness of the cast-in-place plate, then the two side dies are supported on the cushion blocks, and the side dies are reinforced by split bolts and inclined supports.

The construction method has the advantages that the stability of the suspended formwork is difficult to guarantee, the cushion block is difficult to fix with the bottom formwork of the cast-in-place slab, the cushion block cannot be bound with the beam slab reinforcing steel bars, and the cushion block is easy to slide under the action of load, so that the suspended formwork is unstable and displaces; most of mortar or concrete cushion blocks are manufactured on site, the strength generally cannot reach the structural design strength, the cushion blocks are easy to damage under stress, meanwhile, the bottom surfaces of the cushion blocks are closely attached to a bottom mold of a cast-in-place slab, cement paste cannot be wrapped, the cushion blocks are exposed after the mold is removed, and the appearance quality of the structure is affected; the bonding force between the cushion block embedded in the cast-in-situ slab and newly-cast concrete is poor, the hidden trouble of leakage of a contact surface exists, the phenomena of water seepage or structural cracks of a floor slab and the like are easily caused, and the performance and the waterproof function of a concrete structure are weakened.

An effective solution to the problems in the related art has not been proposed yet.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention provides a universal base for a floor formwork and a construction method thereof, which can overcome the defects in the prior art.

In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:

the utility model provides a general base of floor formwork lifting, includes the undersetting, the undersetting includes the lower section of thick bamboo of vertical setting and fixed connection be in the bottom plate of lower bobbin base portion, the lower part of lower section of thick bamboo threaded connection upper bracket, the top of upper bracket has the holding surface, set up threaded hole on the bottom plate.

Furthermore, an internal thread is arranged on the inner wall of the lower barrel, the upper support comprises an upper barrel which is vertically arranged and a top plate which is fixedly connected to the top of the upper barrel, the supporting surface is located at the top of the top plate, the upper barrel corresponds to the lower barrel, and an external thread which is in threaded fit with the internal thread is arranged on the outer wall of the upper barrel.

Furthermore, the top of the bottom plate is fixedly provided with a bulge, the threaded hole extends to the inside of the bulge, and the upper barrel sleeve is arranged outside the bulge.

Further, the upper barrel comprises a plurality of supporting rib plates which are circumferentially arranged at intervals, and the gap between every two adjacent supporting rib plates is communicated with the interior of the upper barrel.

Furthermore, a water stop ring is sleeved on the upper part of the lower barrel.

Further, the top of roof sets firmly the stopper, the top of roof still is connected with spacing angle steel dismantled and assembled, spacing angle steel with the stopper is opposed to each other.

The invention also provides a construction method of the universal base for the floor formwork lifting, which comprises the following steps:

s1, drilling a bolt through hole in a bottom die of the cast-in-place plate, penetrating a bolt, and screwing the upper end of the bolt into the threaded hole of the lower support to complete the fixation of the lower support;

s2, binding the beam plate steel bars;

s3, screwing at least part of the upper barrel of the upper support into the lower barrel of the lower support to complete the installation of the upper support;

s4, nailing a plurality of square wooden keels which are arranged at intervals up and down on the outer sides of the side molds, then placing the square wooden keels together on the top of the upper support, enabling the inner sides of the side molds to tightly prop against a limiting block on the top of the upper support, then installing a template fixture, enabling a clamping plate of the template fixture to tightly clamp the square wooden keels from the outer sides, then installing limiting angle steel on the top of the upper support, enabling the limiting angle steel to tightly attach to the outer sides of the square wooden keels at the lowest part, and completing installation of the hanging mold;

s5, pouring floor concrete and hanging mould structure concrete;

s6, removing the hanging mould and cleaning for standby.

Further, the template clamp comprises a turn buckle and two clamping plates, and the two clamping plates are fixedly connected with the turn buckle.

Further, step S5 specifically includes: before concrete is poured, quality inspection is carried out on scaffold reinforcing conditions, reinforcement installation quality and hanging die installation fixing conditions, after the floor concrete is qualified, the floor concrete is poured, a cast-in-place floor is fed into a die by adopting a commercial concrete pump, the floor concrete is flattened and vibrated along with pouring during pouring, the floor concrete is filled into the lower support through gaps of supporting rib plates of the upper support, the floor concrete is stopped for a period of time slightly after pouring is finished, and the hanging die structural concrete is poured before initial setting after the floor concrete is vibrated and compacted.

Further, step S6 specifically includes: and when the strength of the concrete of the suspended formwork structure reaches 1.2MPa, removing the formwork clamp, removing the limiting angle steel, removing the bolt, tapping the side formwork to separate the side formwork from the concrete, cleaning mortar on the side formwork after demolding is finished, and brushing a demolding agent, wherein the upper support and the lower support are both kept in the concrete on the floor.

The invention has the beneficial effects that: the method has the characteristics of accurate positioning, convenient installation, strong universality, safety, stability and the like, can replace the traditional secondary pouring method, a reinforcing steel bar bracket method, a cushion block supporting method and other suspended formwork supporting methods, eliminates the quality defects of formwork expansion, slurry leakage, slab staggering and the like commonly existing in suspended formwork construction, effectively prevents potential safety hazards caused by illegal spot welding of stressed reinforcing steel bars, improves the integrity and the self-waterproof capability of a concrete structure, fundamentally ensures the construction quality and the waterproof performance of a floor upturning structure, and thoroughly solves the common quality problem of leakage at the root part of a building wall body; the design is exquisite, the structure is simple, and the method is particularly suitable for industrial mass production; the universal base for the floor hoisting die has high strength, no deformation and good universality, the connecting and fixing system adopts threaded connection and bolt locking, the field installation is simple and rapid, the construction precision is high, and the universal base is stable and reliable; the construction process is simplified, the field operation work amount is reduced, the work efficiency is improved, the consumed auxiliary materials are few, a large amount of auxiliary materials and labor cost are saved, and the energy-saving and environment-friendly effects are achieved; the water stop ring 2 and the external threads of the base of the floor formwork lifting universal base can effectively prevent potential structural leakage, the overall quality of cast-in-place structural engineering is improved, the development of the traditional construction process to tool and standardization is promoted, and the floor formwork lifting universal base has a good application value.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a front view of a universal base for a floor formwork hoist according to an embodiment of the present invention;

FIG. 2 is an axial view of a universal base for a floor form hoist according to an embodiment of the present invention;

FIG. 3 is a schematic view of an upper support according to an embodiment of the present invention;

FIG. 4 is a schematic view of a lower support according to an embodiment of the present invention;

fig. 5 is a schematic view of a universal base for a floor hanging formwork in use according to an embodiment of the present invention.

In the figure:

1. an upper support; 2. a water stop ring; 3. a lower support; 4. a threaded hole; 5. a protrusion; 6. supporting the rib plate; 7. a limiting block; 8. limiting angle steel; 9. a bottom die of the cast-in-place plate; 10. a bolt; 11. side mould; 12. a square wood keel; 13. a turn buckle; 14. a splint; 15. and (5) floor concrete.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.

As shown in fig. 1 to 5, the general base for floor formwork lifting according to the embodiment of the present invention includes a lower support 3, the lower support 3 includes a vertically arranged lower cylinder and a bottom plate fixedly connected to the bottom of the lower cylinder, the lower cylinder is screwed to the lower portion of the upper support 1, the top of the upper support 1 has a supporting surface, and the bottom plate is provided with a threaded hole 4.

In a specific embodiment of the present invention, an internal thread is disposed on an inner wall of the lower barrel, the upper support 1 includes an upper barrel vertically disposed and a top plate fixedly connected to a top of the upper barrel, the supporting surface is located on a top of the top plate, the upper barrel corresponds to the lower barrel, and an external thread in threaded engagement with the internal thread is disposed on an outer wall of the upper barrel.

In an embodiment of the present invention, a protrusion 5 is fixedly disposed on the top of the bottom plate, the threaded hole 4 extends to the inside of the protrusion 5, and the upper sleeve is sleeved outside the protrusion 5.

In a specific embodiment of the invention, the upper barrel comprises a plurality of supporting rib plates 6 arranged at intervals in the circumferential direction, and the gap between two adjacent supporting rib plates 6 is communicated with the interior of the upper barrel.

In one embodiment of the invention, the upper part of the lower barrel is sleeved with a water stop ring 2.

In a specific embodiment of the present invention, a limiting block 7 is fixedly arranged at the top of the top plate, a limiting angle 8 is also detachably connected to the top of the top plate, and the limiting angle 8 and the limiting block 7 are opposite to each other.

The invention also provides a construction method of the universal base for the floor formwork lifting, which comprises the following steps:

s1, drilling a bolt through hole in a bottom die 9 of the cast-in-place plate, penetrating a bolt 10, and screwing the upper end of the bolt 10 into the threaded hole 4 of the lower support 3 to complete the fixation of the lower support 3;

s2, binding the beam plate steel bars;

s3, screwing at least part of the upper cylinder of the upper support 1 into the lower cylinder of the lower support 3 to complete the installation of the upper support 1;

s4, nailing a plurality of square wooden keels 12 which are arranged at intervals up and down on the outer side of a side die 11, then placing the square wooden keels together on the top of an upper support 1, enabling the inner side of the side die 11 to tightly push against a limiting block 7 on the top of the upper support 1, then installing a template clamp, enabling a clamping plate 14 of the template clamp to tightly clamp the square wooden keels 12 from the outer side, then installing limiting angle steel 8 on the top of the upper support 1, enabling the limiting angle steel 8 to tightly attach to the outer side of the square wooden keel 12 at the lowest position, and completing installation of the hanging die;

s5, pouring floor concrete 15 and hanging mould structure concrete;

s6, removing the hanging mould and cleaning for standby.

In one embodiment of the present invention, the formwork clamp includes a turn buckle 13 and two clamping plates 14, and both of the clamping plates 14 are fixedly connected to the turn buckle 13.

In an embodiment of the present invention, step S5 specifically includes: before concrete is poured, quality inspection is carried out on scaffold reinforcing conditions, reinforcement installation quality and hanging die installation fixing conditions, after the scaffold reinforcing conditions, the reinforcement installation quality and the hanging die installation fixing conditions are checked to be qualified, the floor concrete 15 is poured, a cast-in-place floor is pumped into a die by adopting a commercial concrete pump, the floor concrete 15 is flattened and vibrated along with pouring when the floor concrete 15 is poured, the floor concrete 15 is filled into the lower support 3 through gaps of the supporting rib plates 6 of the upper support 1, the floor concrete 15 is stopped for a period of time after the pouring is finished, and the hanging die structure concrete is poured before initial setting after the floor concrete 15 is vibrated and compacted.

In an embodiment of the present invention, step S6 specifically includes: and when the strength of the concrete of the suspended formwork structure reaches 1.2MPa, removing the formwork clamp, removing the limiting angle steel 8, removing the bolt 10, tapping the side formwork 11 to separate the side formwork from the concrete, cleaning mortar on the side formwork 11 after demolding is finished, and brushing a demolding agent, wherein the upper support 1 and the lower support 3 are both kept in the floor concrete 15.

In order to facilitate understanding of the above-described embodiments of the present invention, the following detailed description of the embodiments of the present invention is provided by way of specific usage.

The universal base for the floor formwork lifting comprises an upper support 1, a water stop ring 2, a lower support 3 and limiting angle steel 8. Wherein, upper bracket 1 and bottom suspension 3 adopt the PE material to customize by professional producer, and spacing angle steel 8 can be made by oneself on the scene. The preparation method comprises the following steps:

(1) and manufacturing a lower support.

The lower support 3 is made of PE materials and is of a cylindrical structure, the height of the lower support is 60mm, the wall thickness of the lower support is 6mm, the outer diameter of the lower support is 132mm, the lower support 3 comprises a lower cylinder and a bottom plate, a water stop ring 2 is arranged at the upper part of the lower cylinder, and the diameter of the water stop ring 2 is 172 mm; the inner wall of the lower barrel is provided with internal threads, the bottom of the lower barrel is a bottom plate with the thickness of 6mm, a bulge 5 is arranged at the center of the bottom plate, a threaded hole 4 of M12 is formed in the center of the bottom plate, the length of the threaded hole 4 is 35mm, and the upper end of the threaded hole 4 is closed; the bottom plate is radially connected with three triangular PE plates with the thickness of 6mm by taking the threaded hole 4 as the center, and the PE plates are connected with the bottom plate and the bulges 5 to be used as reinforcing rib plates.

(2) And manufacturing an upper support.

The upper support 1 is made of PE materials and is of a cylindrical structure with hollow side walls, the height is 100mm, the wall thickness is 6mm, the outer diameter is 120mm, and the upper support 1 comprises an upper barrel and a top plate. The upper part of the upper barrel is a top plate with the thickness of 10mm, a limiting block 7 with the height of 20mm protrudes from the local part of the top plate, the upper barrel comprises an annular plate and a supporting rib plate 6, the lower part of the upper barrel is an annular plate with the height of 20mm, the upper end of the annular plate is fixedly connected with four supporting rib plates 6 which are symmetrically and annularly arranged and have the width of 30mm, and the supporting rib plates 6 are respectively connected with the top plate and the annular plate into a whole; the outer walls of the supporting rib plate 6 and the annular plate are provided with external threads, and the external diameter and the thread pitch of the external threads are matched with those of the internal threads on the inner wall of the lower support 3.

(3) And manufacturing limit angle steel.

The angle steel 8 is made by cutting out the angle steel with the length of 80mm and 40 x 5mm, and drilling Æ 6mm bolt holes on the plane side ribs.

The construction method comprises the following steps:

(1) and measuring the paying-off.

Firstly, installing a floor cast-in-place steel pipe support, erecting the support by adopting Æ 48 multiplied by 3mm steel pipes, then laying a bottom die keel, laying 50 multiplied by 70mm square wood on a support cross rod, wherein the center distance is 250mm, nailing a cast-in-place board bottom die 9 on the wood keel by adopting a double-faced coated wood veneer board with the thickness of 15mm, adjusting the elevation of the cast-in-place board bottom die 9 to meet the design requirement, accurately releasing a hanging die side line and the center line of a floor hanging die universal base (hereinafter referred to as the base) on the cast-in-place board bottom die 9, and ensuring that the distance between the hanging die side line and the center line of the base is 40 mm.

And (3) determining the distance between the bases by calculation, wherein the distance is generally not more than 1.2m, popping up a longitudinal cross line and a transverse cross line at the center of the bases according to the calculated distance, marking by using red paint, and paying attention to the fact that the keel at the lower part of the bottom die 9 of the cast-in-place plate avoids the center position of the bases.

(2) And installing a lower support.

Installing a lower support 3 according to a cross line of the center of a base, drilling a Æ 12mm bolt through hole on a cast-in-situ plate bottom die 9 corresponding to the cross line position drawn on the cast-in-situ plate bottom die 9, placing the lower support 3 in place, penetrating a bolt 10 of M12 below the cast-in-situ plate bottom die 9 through the bolt through hole and corresponding to a threaded hole 4 on the lower support 3, screwing the upper end of the bolt 10 into the threaded hole 4, additionally arranging a gasket at the bottom of the cast-in-situ plate bottom die 9 and fastening by using a fixing nut, anchoring the lower support 3 and the cast-in-situ plate bottom die 9, ensuring accurate and stable positioning, and preventing floating or bottom slurry leakage when pouring the floor concrete 15.

(3) And (5) binding the beam plate reinforcing steel bars.

The lower support 3 is installed and fixed and then is subjected to beam plate steel bar binding, the original steel bar material and the blanking size meet the design requirements, the steel bar net piece and the plate top negative moment steel bar are firmly bound, the position is accurate, the protective layer cushion block and the steel bar split heads are arranged in a standard mode, and the distance, the number and the thickness of the protective layer of the steel bars meet the design and standard requirements. When the lower support 3 conflicts with the position of the stressed steel bar of the cast-in-situ plate, the position of the steel bar of the cast-in-situ plate can be slightly moved for adjustment.

(4) And installing an upper support.

The upper support 1 and the lower support 3 are assembled and formed, the inner threads and the outer threads are connected and combined, the height of the base is adjusted by the inner threads and the outer threads until the height of the base is equal to the thickness of a cast-in-place plate, and the outer side surface of the limiting block 7 of the upper support 1 is parallel to the side line of the suspended mould and is positioned on the inner side of the side mould 11.

(5) And (5) installing and fixing the hanging die.

The side die 11 of the hanging die is made of double-faced film-coated wood-rubber plates with the thickness of 15mm in a blocking mode, the length of a single block is prepared according to integral multiple of the distance between bases, so that the joint position of the side die 11 is located on the bases, the square wood keel 12 of the side die 11 is made of 50-50 mm square wood arranged in a transverse through mode, and the side die 11 and the square wood keel 12 are nailed firmly through a inch nail according to the distance of 300 mm.

After the beam plate steel bars are bound, a hanging die can be installed, the side dies 11 are installed block by block, the side dies 11 and the square wooden keels 12 are respectively supported on the installed base, the limiting blocks 7 of the upper support 1 are tightly propped against the inner sides of the side dies 11, then template fixtures are installed and arranged at horizontal intervals of 600mm, the square wooden keels 12 are clamped by the template fixtures from the outer sides of the hanging die, the basket bolts 13 of M12 of the template fixtures are rotatably adjusted, and the side dies 11 are oppositely clamped and locked by matching with the clamping plates 14 to form a hanging die supporting and fixing system; the pull-through line is aligned to correct the axis position of the hanging die, so that the perpendicularity and flatness of the side die 11 meet requirements, the limiting angle steel 8 is tightly attached to the outer side of the square wooden keel 12, M5 self-tapping screws are utilized to penetrate through bolt holes Æ 6mm in the limiting angle steel 8, the limiting angle steel 8 and the top plate of the upper support 1 are anchored, and the bottom of the hanging die is guaranteed to be accurately and stably positioned.

(6) Pouring floor concrete and hanging mould structure concrete.

Before the floor concrete 15 is poured, the on-site quality inspector carries out quality inspection on the structural elevation, the reinforcing condition of the cast-in-place slab bottom die 9 and the scaffold, the binding and mounting quality of the steel bars and the mounting and fixing condition of the hanging die, reports inspection acceptance after the design and specification requirements are met, and can pour the floor concrete 15 after the floor concrete is qualified. Cast-in-place floor adopts the commodity concrete pumping to send into the mould, pours floor concrete 15 earlier, along with watering along with spreading the vibration, floor concrete 15 fills the inside of base through the clearance of the gusset 6 of upper bracket 1, can further stabilize the base position and prevent the displacement, avoids the inside weak position that appears of cast-in-place structure simultaneously. Stopping for a period of time after the pouring of the floor concrete 15 is finished, pouring the concrete of the suspended form structure before initial setting after the floor concrete 15 is vibrated and sunk, and floating the upper surface by using a wooden trowel along with the pouring in order to prevent the bottom of the suspended form from turning thick liquid.

The constructors should pay attention to the fact that the constructors do not need to step on or trip over the base in the pouring construction, and the constructors should avoid directly impacting the hanging die and the reinforcing system thereof when pouring concrete, and avoid the vibrating rod from touching the base and the side die 11 when vibrating so as to prevent the vibrating rod from moving due to impact and vibration.

(7) And (5) removing the hanging die.

And (3) removing the hanging die when the strength of the concrete with the hanging die structure reaches 1.2MPa, firstly unscrewing M12 turn-basket bolts 13 on the upper part of the template clamp, removing the template clamp, then unscrewing M5 self-tapping screws on the limit angle steel 8 by using an electric hand drill or a screwdriver, removing the limit angle steel 8, withdrawing the bolts 10 anchoring the lower support 3 at the lower part of the bottom die 9 of the cast-in-place plate, tapping the side die 11 to separate the side die from the concrete, cleaning mortar on the side die 11 after demolding, and brushing a demolding agent.

The base is kept somewhere inside cast-in-place slab concrete, and the effect of dual stagnant water prevention of seepage can be played to the external screw thread in the stagnant water ring 2 and the upper bracket 1 outside at base middle part, effectively prevents structure seepage hidden danger.

(8) The tool is collected and turned over.

The parts such as the template anchor clamps of dismantling, spacing angle steel 8 and bolt 10 in time collect the clearance, and the part appears the damage and need in time to be changed, arranges the dry department in and deposits to do anticorrosive rust-resistant treatment, in order to continue the turnover use.

In conclusion, by means of the technical scheme, the method has the characteristics of accurate positioning, convenience and quickness in installation, strong universality, safety and stability and the like, can replace traditional formwork lifting and supporting methods such as a secondary pouring method, a steel bar support method, a cushion block supporting method and the like, eliminates the quality defects of formwork expansion, slurry leakage, slab staggering and the like commonly existing in formwork lifting construction, effectively prevents potential safety hazards caused by illegal spot welding of stressed steel bars, improves the integrity and self-waterproof capability of a concrete structure, fundamentally ensures the construction quality and waterproof performance of a floor upturning structure, and thoroughly solves the common quality problem of leakage at the root of a wall body of a building; the design is exquisite, the structure is simple, and the method is particularly suitable for industrial mass production; the universal base for the floor hoisting die has high strength, no deformation and good universality, the connecting and fixing system adopts threaded connection and bolt locking, the field installation is simple and rapid, the construction precision is high, and the universal base is stable and reliable; the construction process is simplified, the field operation work amount is reduced, the work efficiency is improved, the consumed auxiliary materials are few, a large amount of auxiliary materials and labor cost are saved, and the energy-saving and environment-friendly effects are achieved; the water stop ring 2 and the external threads of the base of the floor formwork lifting universal base can effectively prevent potential structural leakage, the overall quality of cast-in-place structural engineering is improved, the development of the traditional construction process to tool and standardization is promoted, and the floor formwork lifting universal base has a good application value.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a general base of floor hanging die, its characterized in that includes undersetting (3), undersetting (3) are including the lower section of thick bamboo of vertical setting and fixed connection in the bottom plate of lower bobbin base portion, the lower part of a section of thick bamboo threaded connection upper bracket (1), the top of upper bracket (1) has the holding surface, set up threaded hole (4) on the bottom plate.

2. The universal base for floor hanging molds according to claim 1, characterized in that the inner wall of the lower cylinder is provided with internal threads, the upper support (1) comprises an upper cylinder vertically arranged and a top plate fixedly connected to the top of the upper cylinder, the supporting surface is located at the top of the top plate, the upper cylinder corresponds to the lower cylinder, and the outer wall of the upper cylinder is provided with external threads matched with the internal threads in a threaded manner.

3. The universal base for floor hanging molds according to claim 2, characterized in that a protrusion (5) is fixedly arranged on the top of the bottom plate, the threaded hole (4) extends to the inside of the protrusion (5), and the upper sleeve is sleeved on the outside of the protrusion (5).

4. The universal base for the floor formwork lifting according to claim 3, wherein the upper barrel comprises a plurality of supporting rib plates (6) which are circumferentially arranged at intervals, and gaps between two adjacent supporting rib plates (6) are communicated with the inside of the upper barrel.

5. The universal base for floor hanging moulds as claimed in claim 1, characterised in that the upper part of the lower tube is fitted with a water stop ring (2).

6. The universal floor formwork base of claim 4, wherein a limiting block (7) is fixedly arranged at the top of the top plate, a limiting angle steel (8) is also detachably connected to the top of the top plate, and the limiting angle steel (8) and the limiting block (7) are opposite to each other.

7. The construction method of the universal base for the floor formwork lifting as claimed in claim 6, characterized by comprising the following steps:

s1, drilling a bolt through hole in a bottom die (9) of the cast-in-place plate, penetrating a bolt (10), and screwing the upper end of the bolt (10) into the threaded hole (4) of the lower support (3) to complete the fixation of the lower support (3);

s2, binding the beam plate steel bars;

s3, screwing at least part of the upper cylinder of the upper support (1) into the lower cylinder of the lower support (3) to complete the installation of the upper support (1);

s4, nailing a plurality of square wooden keels (12) which are arranged at intervals up and down on the outer side of a side die (11), then placing the square wooden keels together on the top of an upper support (1), enabling the inner side of the side die (11) to tightly prop against a limiting block (7) on the top of the upper support (1), then installing a template clamp, enabling a clamping plate (14) of the template clamp to tightly clamp the square wooden keels (12) from the outer side, then installing limiting angle steel (8) on the top of the upper support (1), enabling the limiting angle steel (8) to be tightly attached to the outer side of the square wooden keel (12) at the lowest position, and completing installation of the suspended die;

s5, pouring floor concrete (15) and hanging mould structure concrete;

s6, removing the hanging mould and cleaning for standby.

8. The universal floor formwork base of claim 7, characterized in that the formwork clamp comprises a turn buckle (13) and two clamping plates (14), both clamping plates (14) being fixedly connected to the turn buckle (13).

9. The universal base for floor hanging molds of claim 7, wherein the step S5 specifically comprises: before concrete is poured, quality inspection is carried out on scaffold reinforcing conditions, reinforcement installation quality and hanging die installation fixing conditions, after the floor concrete (15) is qualified, commercial concrete is poured into a die for cast-in-place floors, the floor concrete (15) is flattened and vibrated along with pouring when being poured, the floor concrete (15) is filled into the lower support (3) through gaps of supporting rib plates (6) of the upper support (1), the floor concrete (15) is stopped for a period of time slightly after pouring is finished, and the hanging die structure concrete is poured before initial setting after the floor concrete (15) is vibrated and sunk.

10. The universal base for floor hanging molds of claim 7, wherein the step S6 specifically comprises: and when the strength of the concrete of the formwork hanging structure reaches 1.2MPa, the formwork clamp is disassembled, then the limiting angle steel (8) is disassembled, then the bolt (10) is disassembled, the side formwork (11) is tapped to be separated from the concrete, mortar on the side formwork (11) is cleaned and a release agent is coated after the demolding is finished, and the upper support (1) and the lower support (3) are both kept in the floor concrete (15).

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