阅读说明：本技术 一种楼板后浇带支模装置 (Floor post-cast strip formwork device ) 是由 尹杰 于 2021-08-01 设计创作，主要内容包括：一种楼板后浇带支模装置,属于建筑工程技术领域,包括模板,所述模板由中片、上片和下片构成,所述中片的两侧侧边上设有插孔；所述上片和下片的一个侧边上设有插销和钢筋槽,所述钢筋槽中装接有定位钢丝；还包括定距构件,所述定距构件包括撑抵座杆、旋撑螺管和双向螺杆,所述撑抵座杆上固定安装有圆帽墩,所述圆帽墩套扣在旋撑螺管的筒底上,所述双向螺杆螺旋装接在旋撑螺管中；其有益效果是分体结构模板既可以顺利支设,又不妨碍钢筋穿过,还可以避免砂浆泄露,使后浇带两侧的企口面接缝平直,同时这种分体后的下片还可以同时替代下层钢筋网下侧的垫块,定距构件可以避免模板被压缩而产生位移,操作方便且提高了施工质量。(A floor post-cast strip formwork device belongs to the technical field of building engineering and comprises a formwork, wherein the formwork consists of a middle piece, an upper piece and a lower piece, and jacks are arranged on the side edges of two sides of the middle piece; one side edge of the upper sheet and the lower sheet is provided with a bolt and a reinforcing steel bar groove, and a positioning steel wire is connected in the reinforcing steel bar groove; the distance component comprises a supporting seat rod, a spiral supporting pipe and a bidirectional screw, a round cap pier is fixedly mounted on the supporting seat rod, the round cap pier is sleeved and buckled on the barrel bottom of the spiral supporting pipe, and the bidirectional screw is spirally mounted in the spiral supporting pipe; the split structure formwork has the advantages that the split structure formwork can be smoothly erected without hindering the passing of reinforcing steel bars, mortar can be prevented from leaking, the groove and tongue surface joints on the two sides of the post-cast strip are straight, meanwhile, the split lower piece can also replace the cushion block on the lower side of the lower layer reinforcing mesh, the distance members can prevent the formwork from being compressed to generate displacement, the operation is convenient, and the construction quality is improved.)

1. A floor post-cast strip formwork device comprises a formwork and is characterized in that the formwork consists of a middle piece, an upper piece and a lower piece, the width of the middle piece is equal to the distance between two layers of X-axis steel bars in a double-layer steel bar cage, and a plurality of jacks are arranged on the side surfaces of two sides of the middle piece; the length and the thickness of the upper piece are equal to those of the middle piece, the width of the upper piece is equal to the diameter of the X-axis steel bar plus the distance from the upper layer of the X-axis steel bar to the upper surface of the post-cast strip in design, a plurality of bolts which are vertically and fixedly installed are arranged on the side surface of the lower side of the upper piece, and the positions and the number of the bolts correspond to the jacks on the side surface of one side of the middle piece one by one; the side surface of the lower side of the upper sheet is also provided with a plurality of reinforcing steel bar grooves, and the number and the positions of the reinforcing steel bar grooves correspond to the number and the positions of the X-axis reinforcing steel bars in design one by one; positioning steel wires are fixedly connected in the reinforcing steel bar grooves; the lower piece and the upper piece have the same structure, and the bolt and the reinforcing steel bar groove are positioned on the side face of the upper side of the lower piece.

2. The floor slab post-cast strip formwork device according to claim 1, further comprising distance members, wherein the distance members comprise two supporting seat rods, two spiral supporting screw pipes and two-way screw rods, the supporting seat rods are rectangular long rods, each supporting seat rod is fixedly provided with two circular cap piers, each circular cap pier comprises a pier column and a pier cap, the pier column and the pier cap are both circular, one end of the pier column is vertically fixed on the supporting seat rod, and the pier cap is vertically fixed on the other end of the pier column; the number of the spiral supporting tubes is four, internal threads are arranged on the inner wall of a tube barrel of each spiral supporting tube, one end of each spiral supporting tube is an open tube, the other end of each spiral supporting tube is provided with a tube bottom, and a circular hole is formed in the center of each tube bottom; the two bidirectional screw rods are arranged, the middle part of each bidirectional screw rod is provided with a central column, two ends of each central column are respectively provided with a fixedly generated screw rod, the screw rods are provided with external threads matched with the internal threads on the spiral supporting screw pipes, and the spiral directions of the external threads on the screw rods on two sides of the same central column are the same; four circular cap piers on the two supporting seat rods correspond to a rotary supporting screw pipe respectively, the rotary supporting screw pipes are sleeved on the circular cap piers, pier columns are sleeved in circular holes in the bottom of the barrel, and pier caps are clamped in the barrel at the inner side of the bottom of the barrel; four screw rods on the two bidirectional screw rods are respectively corresponding to a rotary supporting screw tube, and the rotary supporting screw tubes are spirally connected on the screw rods to form a distance member together.

3. The floor slab post-cast strip formwork device according to claim 2, wherein the formwork method comprises the steps of:

the method includes the steps that a steel bar cage is manufactured, a plurality of X-axis steel bars and a plurality of Y-axis steel bars are longitudinally and transversely bound to form an upper steel bar mesh layer and a lower steel bar mesh layer, a plurality of Z-axis steel bars are welded between the upper steel bar mesh layer and the lower steel bar mesh layer, and the steel bar cage is manufactured; the Y-axis steel bar refers to a steel bar arranged along the length direction of the position of the post-cast strip, the X-axis steel bar refers to a steel bar arranged along the width direction of the position of the post-cast strip, and the Z-axis steel bar refers to a steel bar arranged along the height direction of the position of the post-cast strip;

secondly, positioning and marking, and determining the reserved position of the post-cast strip according to the design construction drawing;

thirdly, installing templates on two sides of the post-cast strip, firstly placing the lower sheet below the lower layer steel bar net at a set position, and placing the X-axis steel bars into the steel bar grooves on the side face of the upper side of the lower sheet one by one; then, inclining the lower piece, putting the middle piece between the upper and lower layers of reinforcing mesh in an inclined state, aligning each jack on one side surface of the middle piece with each bolt on the upper side surface of the lower piece one by one, then respectively inserting each bolt into each jack to combine the lower piece and the middle piece, and aligning the combined middle piece and lower piece to make the upper side surface of the middle piece contact with the upper layer of reinforcing mesh and place the middle piece and the upper layer of reinforcing mesh at a designed position; then aligning each bolt on the side surface of the lower side of the upper piece with each jack on the side surface of the upper side of the middle piece, aligning each reinforcing steel bar groove on the side surface of the lower side of the upper piece with each X-axis reinforcing steel bar in the reinforcing mesh on the upper layer, then inserting the bolt on the upper piece into the jack, integrating the upper piece and the middle piece to form an integrated structure template, and enabling the reinforcing steel bar grooves to wrap the X-axis reinforcing steel bars; thus, templates are arranged on both sides of the post-cast strip;

fourthly, binding the positioning steel wires in the steel bar grooves on the X-axis steel bars one by one;

fifthly, the distance members are vertically arranged between the formworks on the two sides of the post-cast strip, then the inclined support screw pipes are rotated to support the support seat rods on the two sides, and the formworks on the two sides are tightly supported by the support seat rods.

4. The floor slab post-cast strip formwork device according to claim 3, wherein the formwork stripping method comprises the steps of:

the supporting seat rod is loosened and separated from the templates on two sides of the post-cast strip by holding the central column and reversely rotating the supporting screw tube;

the positioning steel wires bound on the X-axis steel bars are unfastened;

thirdly, inserting the upper piece into a gap between the upper piece and the middle piece by using a shovel blade, tilting the upper piece to enable the plug pin to be loosened from the plug hole, holding the upper piece, and taking out the plug pin in the upper piece from the plug hole in the middle piece;

the middle piece is pulled open, the middle piece and the lower piece are separated from the floor column body which is poured and maintained, the middle piece and the lower piece are inclined, the middle piece is pulled out, the inserting holes in the middle piece are separated from the inserting pins on the lower piece, the middle piece is taken out, and the lower piece is taken out.

5. The floor slab post-cast strip formwork device of claim 3, wherein both sides of the formwork are coated with an anti-stick coating.

6. The formwork device for floor post-cast strip according to claim 3, wherein the corresponding formwork at two sides of the post-cast strip is covered with plastic cloth.

7. The floor slab post-cast strip formwork device according to claim 3, wherein the Y-axis steel bars and the Z-axis steel bars are not arranged at the edge position of the post-cast strip.

Technical Field

The invention belongs to the technical field of construction engineering construction, and particularly relates to a floor post-cast strip formwork device.

Background

The post-cast strip is a technical measure which is taken to prevent a cast-in-place reinforced concrete structure from generating harmful cracks due to nonuniform self shrinkage or nonuniform settlement in the building construction, and is reserved at the post-construction position at the corresponding position of a foundation slab, a wall and a beam. The concrete has wide application in the construction of large-span ultrahigh concrete structural slabs in industrial plants, and particularly, the floor of the non-metal wear-resistant terrace and the concrete of a post-pouring belt are required to have no joint mark and consistent flatness; when the post-cast strip is constructed, templates need to be erected, namely, the templates are installed on two sides of the width of the post-cast strip to separate concrete on the two sides. For post-cast strip construction of a floor slab, two layers of steel bars are usually tied up on the slab surface, and a post-cast strip template must be erected after the lower layer of steel bars are tied up. In the process of supporting the template of the floor post-cast strip, how to ensure the template to be fixed firmly and facilitate the supporting and the removal of the template is a problem to be overcome by technical personnel in the field.

Patent document CN107035141B discloses a formwork supporting method for a floor post-cast strip, which includes positioning and marking, binding floor slab steel bars, welding Z-axis steel bars on upper and lower layers of X-axis steel bars on two sides of the post-cast strip, wherein the welding position of the Z-axis steel bars is located on one side of the upper and lower layers of X-axis steel bars opposite to each other, installing formworks on two sides of the post-cast strip, the formworks are clamped between adjacent X-axis steel bars and attached to Y-axis steel bars, the Z-axis steel bars are abutted to the side walls of the formworks, battens are placed on the upper and lower sides of the formworks towards one side of the post-cast strip, the battens are abutted to the formworks and seal gaps at the joint of the upper and lower sides of the adjacent formworks, detachable supporting members are installed between the battens on two sides of the post-cast strip, and the battens and the formworks are fixed; the scheme is claimed to facilitate the erection and the removal of the template, and meanwhile, the fixing strength and the leakage prevention capability of the template can be effectively guaranteed.

But in fact this scheme has two big problems, first, its upper and lower position of Z axle reinforcing bar is the vacancy, can pack in this vacancy after pouring the concrete mortar, make the tongue-and-groove surface rough and uneven; secondly, the Y-axis steel bar is tightly attached to the template, the Z-axis steel bar is a part of the template, so that the Y-axis steel bar is on the surface of the rabbet, and the Z-axis steel bar is exposed outside the rabbet, thereby influencing the construction quality of the post-cast strip; thirdly, the distance between two modules is adjusted and fixed by the rotation of the hexagonal rotating block, when concrete is poured or the modules are vibrated, the hexagonal rotating block is easy to loosen, the modules can move towards the middle, and the engineering quality is seriously influenced.

Disclosure of Invention

The invention aims to solve the technical problem of providing a post-cast strip formwork device which is free of a vacant template, has integrity, is convenient to assemble and disassemble and is firm to install.

In order to solve the technical problem, the technical scheme adopted by the invention is that the floor post-cast strip formwork device comprises a formwork and a double-layer steel reinforcement cage in a reinforced concrete floor, and is characterized in that the formwork is a split structural formwork and consists of a middle piece, an upper piece and a lower piece, the width of the middle piece is equal to the distance between two layers of X-axis steel reinforcements in the double-layer steel reinforcement cage, and a plurality of jacks are arranged on the side edges of the two sides of the middle piece; the length and the thickness of the upper piece are equal to those of the middle piece, the width of the upper piece is equal to the diameter of the X-axis steel bar plus the distance from the upper layer of X-axis steel bar to the upper surface of the post-cast strip in design, a plurality of bolts which are vertically and fixedly installed are arranged on the side edge surface of the lower side of the upper piece, the positions and the number of the bolts are in one-to-one correspondence with the jacks on the side edge surface of one side of the middle piece, and the sizes and the lengths of the bolts are matched with the jacks, so that the bolts can be stably inserted into the jacks; the side surface of the lower side of the upper sheet is also provided with a plurality of reinforcing steel bar grooves, the number and the positions of the reinforcing steel bar grooves correspond to those of the upper-layer X-axis reinforcing steel bars in design one by one, and the size of each reinforcing steel bar groove is matched with the outer diameter of each X-axis reinforcing steel bar, so that the X-axis reinforcing steel bars can be just placed into the reinforcing steel bar grooves; the steel bar groove is also fixedly provided with a positioning steel wire which is used for fixing the template at a set position on the X-axis steel bar after being bound on the X-axis steel bar; the lower sheet has the same structure as the upper sheet, but the bolt and the reinforcing steel bar groove are positioned on the upper side surface of the lower sheet.

The support seat rod is a rectangular long rod, two circular cap piers are fixedly mounted on each support seat rod, each circular cap pier comprises a pier column and a pier cap, the pier columns and the pier caps are circular, one ends of the pier columns are vertically fixed on the support seat rods, and the pier caps are vertically fixed at the other ends of the pier columns; the number of the rotary supporting spiral pipes is four, internal threads are arranged on the inner wall of a pipe barrel of each rotary supporting spiral pipe, one end of each rotary supporting spiral pipe is an opening end, the other end of each rotary supporting spiral pipe is provided with a pipe bottom, and a round hole is formed in the center of each pipe bottom and slightly larger than the outer diameter of each pier column, so that the pipe bottom can be sleeved on each pier column to freely rotate and be blocked by a pier cap; the two bidirectional screw rods are arranged, the middle part of each bidirectional screw rod is provided with a central column, two ends of each central column are respectively provided with a fixedly generated screw rod, the screw rods are provided with external threads matched with the internal threads on the spiral supporting screw pipes, and the spiral directions of the external threads on the screw rods on two sides of the same central column are the same; four circular cap piers on the two supporting seat rods correspond to a rotary supporting screw pipe respectively, the rotary supporting screw pipes are sleeved on the circular cap piers, pier columns are sleeved in circular holes in the bottom of the barrel, and pier caps are clamped in the barrel at the inner side of the bottom of the barrel; four screw rods on the two bidirectional screw rods are respectively corresponding to a rotary supporting screw tube, and the rotary supporting screw tubes are spirally connected on the screw rods to form a distance member together.

A formwork supporting method for a floor slab post-cast strip comprises the following steps:

the method includes the steps of manufacturing a steel bar cage, namely, criss-cross binding of a plurality of X-axis steel bars and a plurality of Y-axis steel bars to form an upper steel bar mesh layer and a lower steel bar mesh layer, welding a plurality of Z-axis steel bars between the upper steel bar mesh layer and the lower steel bar mesh layer, and forming a double-layer steel bar cage; the Y-axis steel bar refers to a steel bar arranged along the length direction of the position of the post-cast strip, the X-axis steel bar refers to a steel bar arranged along the width direction of the position of the post-cast strip, and the Z-axis steel bar refers to a steel bar arranged along the height direction of the position of the post-cast strip.

Secondly, positioning and marking, and determining the reserved position of the post-cast strip according to the design construction drawing; the reserved position is irrelevant to the position of the Y-axis steel bar or the Z-axis steel bar.

Thirdly, installing templates on two sides of the post-cast strip, firstly placing the lower sheet below the lower layer steel bar net at a set position, and placing the X-axis steel bars into the steel bar grooves on the side face of the upper side of the lower sheet one by one; then, inclining the lower piece, putting the middle piece between the upper and lower layers of reinforcing mesh in an inclined state, aligning each jack on one side surface of the middle piece with each bolt on the upper side surface of the lower piece one by one, then respectively inserting each bolt into each jack to combine the lower piece and the middle piece, and aligning the combined middle piece and lower piece to make the upper side surface of the middle piece contact with the upper layer of reinforcing mesh and place the middle piece and the upper layer of reinforcing mesh at a designed position; aligning each bolt on the side surface of the lower side of the upper piece with each jack on the side surface of the upper side of the middle piece, aligning each steel bar groove on the side surface of the lower side of the upper piece with each X-axis steel bar in the upper layer steel bar mesh, inserting the bolt on the upper piece into the jack, integrating the upper piece and the middle piece, generally enabling the upper piece, the middle piece and the lower piece to form an integrated structure template, and enabling the steel bar grooves to wrap the X-axis steel bars; such forms are thus installed on both sides of the post-cast strip position.

Fourthly, the positioning steel wires in the steel bar grooves are bound on the X-axis steel bars one by one, so that the position of the template can be fixed, and the template is prevented from moving integrally due to the fact that the template is pressed when concrete is poured in the rear portion.

Fifthly, vertically placing the distance members between the templates on the two sides of the post-cast strip, tightly holding the central column, rotating the rotary supporting screwed pipes on the two sides of the central column, supporting the supporting seat rods on the two sides, and tightly supporting the templates on the two sides by the supporting seat rods; because the spiral directions of the external threads on the screw rods on the two sides of the same central column are the same, even when concrete is poured and tamped, the spiral supporting screw pipes rotate due to vibration, and the spiral supporting screw pipes on the two sides of the same central column can rotate towards the same direction, so that the distance-fixing components are always kept at the same supporting distance.

The two sides of the template are coated with anti-sticking paint; the later-stage mould removal is convenient.

And plastic cloth covers the corresponding templates on the two sides of the post-cast strip to protect the X-axis steel bars reserved at the position of the post-cast strip from water.

Particularly, the Y-axis steel bars and the Z-axis steel bars are not arranged at the edge of the post-cast strip, so that the grooves and the grooves are smooth, and the Y-axis steel bars or the Z-axis steel bars are prevented from being exposed.

After the floor construction and maintenance are finished, the template is very convenient to remove, and the removing method comprises the following steps:

the supporting seat rod is loosened and separated from the templates on the two sides of the post-cast strip.

And releasing the positioning steel wires bound on the X-axis steel bars.

Thirdly, the shovel blade is inserted into a gap between the upper piece and the middle piece, the upper piece is tilted upwards, the plug pin is loosened from the plug hole, the upper piece is held, and the plug pin in the upper piece is taken out from the plug hole in the middle piece.

The middle piece is pulled open, the middle piece and the lower piece are separated from the floor column body which is poured and maintained well, the middle piece and the lower piece are inclined, the middle piece is pulled out, the inserting holes in the middle piece are separated from the inserting pins on the lower piece, the middle piece is taken out, the lower piece is taken out, and accordingly the form removal is completed, and the convenience is achieved.

Compared with the prior art, the invention has the following beneficial effects:

the split structure formwork is adopted, and the reinforcing steel bar grooves are formed in the split parts, so that the formwork can be smoothly supported, the steel bars are not hindered from passing through, meanwhile, mortar leakage can be avoided, and the tongue-and-groove surface joints on the two sides of the post-cast strip are straight, therefore, the split structure formwork is convenient to operate, the construction quality is improved, and the split structure formwork is very convenient to disassemble; meanwhile, the split lower sheet can also replace a cushion block on the lower side of the lower layer reinforcing mesh, so that the lower sheet is multifunctional.

Secondly, distance members are adopted, so that the templates on two sides of the post-cast strip are not compressed due to extrusion when the floor slab main body is poured; the distance component adopts a spiral supporting solenoid component structure, and can be supported and detached very conveniently.

The positioning steel wire is adopted, the integrated structure template can be fixed at the designed position on the reinforcement cage, and the integral displacement of the template caused by pouring and tamping can be better avoided by combining the distance-setting component.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is an exploded view of the template of the present invention.

FIG. 3 is a schematic view showing the overall structure of the present invention when a distance member is attached.

FIG. 4 is a perspective view showing the spacer member according to the present invention.

FIG. 5 is a sectional view schematically showing the construction of the spacer member according to the present invention.

In the figure: 1. the steel bar cage comprises a template, 2 double-layer steel bar cages, 3 middle pieces, 4 upper pieces, 5 lower pieces, 6X-axis steel bars, 7 jacks, 8 bolts, 9 steel bar grooves, 10 positioning steel bars, 11 distance members, 12 supporting seat rods, 13 rotary supporting screw pipes, 14 bidirectional screw rods, 15 round cap piers, 16 pier columns, 17 pier caps, 18 cylinder bottoms, 19 round holes, 20 center columns, 21 screw rods, 22Y-axis steel bars, 23 steel bar nets and 24Z-axis steel bars.

Detailed Description

The present invention is further illustrated by the following examples, which are intended to illustrate the invention but not to limit it further, and should not be construed as limiting the scope of the invention.

Example 1.

As shown in fig. 1 and 2, a formwork device for a floor post-cast strip is manufactured, the formwork device comprises a formwork 1 and a double-layer reinforcement cage 2 in a reinforced concrete floor, and the formwork 1 forms the formwork device by means of the double-layer reinforcement cage 2; in this embodiment, the formwork 1 is made into a combined formwork 1 composed of a middle piece 3, an upper piece 4 and a lower piece 5, the width of the middle piece 3 is equal to the distance between an upper layer of X-axis steel bars 6 and a lower layer of X-axis steel bars 6 in a double-layer steel bar cage 2, and a plurality of insertion holes 7 are arranged on the side edge surfaces of two sides of the middle piece 3; the length and the thickness of the upper piece 4 are equal to those of the middle piece 3, the width of the upper piece 4 is equal to the diameter of the X-axis steel bar 6 plus the distance from the upper layer X-axis steel bar 6 to the upper surface of the post-cast strip in design, a plurality of bolts 8 which are vertically and fixedly installed are arranged on the side surface of the lower side of the upper piece 4, the positions and the number of the bolts 8 correspond to the jacks 7 on the side surface of the middle piece 3 one by one, and the size and the length of the bolts 8 are matched with the jacks 7, so that the bolts 8 can be stably inserted into the jacks 7; the side surface of the lower side of the upper sheet 4 is also provided with a plurality of reinforcing steel bar grooves 9, the number and the positions of the reinforcing steel bar grooves 9 correspond to those of the upper-layer X-axis reinforcing steel bars 6 in design one by one, and the size of each reinforcing steel bar groove 9 is matched with the outer diameter of each X-axis reinforcing steel bar 6, so that the X-axis reinforcing steel bars 6 can be just placed into the reinforcing steel bar grooves 9; positioning steel wires 10 are fixedly connected to the inner wall of the reinforcing steel bar groove 9 or the outer edge of the reinforcing steel bar groove 9, and the positioning steel wires 10 are used for being bound on the X-axis reinforcing steel bars 6 and then fixing the template 1 at a set position on the X-axis reinforcing steel bars 6; the lower sheet 5 and the upper sheet 4 have the same structure, and the bolt 8 and the reinforcing steel bar groove 9 on the lower sheet 5 are positioned on the side surface of the upper side of the lower sheet 5; as shown in fig. 2, the pins 8 of the upper sheet 4 are inserted into the insertion holes 7 on the upper side surface of the middle sheet 3, and the pins 8 of the lower sheet 5 are inserted into the insertion holes 7 on the lower side surface of the middle sheet 3, so that the upper sheet 4, the middle sheet 3 and the lower sheet 5 are combined to form the combined structure formwork 1.

Example 2.

As shown in fig. 3, 4 and 5, a distance member 11 is additionally provided on the basis of embodiment 1, the distance member 11 includes two supporting seat rods 12, two screw nuts 13 and two-way screws 14, the supporting seat rods 12 are rectangular long rods, each supporting seat rod 12 is fixedly provided with two circular cap piers 15, each circular cap pier 15 includes a pier 16 and a pier cap 17, the pier 16 and the pier cap 17 are both circular, one end of the pier 16 is vertically fixed on the supporting seat rod 12, and the pier cap 17 is vertically fixed on the other end of the pier 16; the number of the spiral support tubes 13 is four, internal threads are arranged on the inner wall of a tube barrel of each spiral support tube 13, one end of each spiral support tube is an open end, the other end of each spiral support tube is provided with a tube bottom 18, a round hole 19 is formed in the center of each tube bottom 18, and the round hole 19 is larger than the outer diameter of each pier column 16 and smaller than the outer diameter of each pier cap 17, so that the tube bottom 18 can be sleeved on the pier columns 16 to rotate freely and is blocked by the pier caps 17 without falling off; the number of the two-way screw rods 14 is two, the middle part of each two-way screw rod 14 is a central column 20, two ends of each central column 20 are respectively provided with a fixedly generated screw rod 21, each screw rod 21 is provided with an external thread matched with the internal thread on the spiral supporting screwed pipe 13, and the spiral directions of the external threads on the screw rods 21 on two sides of the same central column 20 are the same; four circular cap piers 15 on two supporting seat rods 12 correspond to a rotary supporting screw tube 13 respectively, the rotary supporting screw tubes 13 are sleeved on the circular cap piers 15, pier columns 16 are sleeved in circular holes 19 in a cylinder bottom 18, and pier caps 17 are clamped in a cylinder barrel on the inner side of the cylinder bottom 18; the four screw rods 21 on the two bidirectional screw rods 14 are respectively corresponding to one rotary supporting screw tube 13, and the rotary supporting screw tubes 13 are spirally connected on the screw rods 14 to form the distance component 11 together.

Example 3.

The method for supporting the floor slab post-cast strip by using the materials comprises the following steps:

making a double-layer steel reinforcement cage 2, namely criss-cross binding a plurality of X-axis steel reinforcements 6 and a plurality of Y-axis steel reinforcements 22 at intersections to form an upper layer of steel reinforcement meshes 23 and a lower layer of steel reinforcement meshes 23, and welding a plurality of Z-axis steel reinforcements 24 between the upper layer of steel reinforcement meshes 23 and the lower layer of steel reinforcement meshes 23 to form the double-layer steel reinforcement cage 2; wherein, Y axle reinforcing bar 22 indicates the reinforcing bar that sets up along post-cast strip position length direction, and X axle reinforcing bar 6 indicates the reinforcing bar that sets up along post-cast strip position width direction, and Z axle reinforcing bar 24 indicates the reinforcing bar that sets up along post-cast strip position direction of height.

Secondly, positioning and marking off, and determining the reserved position of the post-cast strip according to the design and construction drawing.

Thirdly, installing the templates 1 at two sides of the post-cast strip, firstly placing the lower sheet 5 below the lower layer reinforcing mesh 23 at the set position, and correspondingly placing the X-axis reinforcing steel bars 6 into the reinforcing steel bar grooves 9 on the side edge face of the upper side of the lower sheet 5 one by one; then, the lower sheet 5 is inclined, the middle sheet 3 is placed between the upper and lower layers of reinforcing mesh 23 in an inclined manner, each jack 7 on one side surface of the middle sheet is aligned with each plug 8 on the side surface of the upper side of the lower sheet 5 one by one, then each plug 8 is respectively inserted into each jack 7, the lower sheet 5 and the middle sheet 3 are combined, the combined middle sheet 3 and lower sheet 5 are vertically arranged, and the side surface of the upper side of the middle sheet 3 is in contact with the upper layer of reinforcing mesh 23 and is placed at a designed position; then aligning each pin 8 on the side surface of the lower side of the upper sheet 4 with each jack 7 on the side surface of the upper side of the middle sheet 3, aligning each reinforcing bar groove 9 on the side surface of the lower side of the upper sheet 4 with each X-axis reinforcing bar 6 in the upper reinforcing mesh 23, and then inserting the pin 8 on the upper sheet 4 into each jack 7 to combine the upper sheet 4 with the middle sheet 3, so that the upper sheet 4, the middle sheet 3 and the lower sheet 5 form a combined structural template 1 as a whole, and enabling each X-axis reinforcing bar 6 to pass through each reinforcing bar groove 9 on the combined structural template 1; during installation, the upper sheet 4, the middle sheet 3 and the lower sheet 5 are not in contact with the Y-axis steel bars and the Z-axis steel bars; the template 1 with the integrated structure is arranged on both sides of the post-cast strip position, and then anti-adhesion coatings are coated on both side surfaces of the template.

The positioning steel wires 10 in the respective steel bar grooves 9 are bound to the X-axis steel bars 6 one by one.

Fifthly, manufacturing the distance members 11, putting the round cap piers 15 into the opening pipe of the spiral supporting screw pipe 13, enabling the pier studs 16 to penetrate through the round holes 19 in the cylinder bottom 18, enabling the pier studs 17 to be intercepted in the cylinder pipe by the cylinder bottom, then welding or screwing the pier studs 16 on the supporting seat rods 12, welding two round cap piers 15 carrying the spiral supporting screw pipes 13 on the two supporting seat rods 12 respectively in the way, then taking two bidirectional screw rods 14, holding the central column 20 on the bidirectional screw rods 14, screwing the screw rods 21 at two ends of the central column 20 into the inclined supporting screw pipes 13 respectively, and manufacturing the two distance members 11.

Sixthly, installing distance-fixing components 11, vertically placing the distance-fixing components 11 between the templates 1 on the two sides of the post-cast strip, then tightly holding the central column 20, and rotating the rotary supporting screw pipes 13 on the screw rods 21 on the two sides of the central column 20, so that the supporting seat rods 12 on the two sides are supported, and the templates 1 on the two sides are supported tightly by the supporting seat rods 12; thus, two distance components are arranged at the position of the post-cast strip; and then covering plastic cloth on the corresponding templates 1 at the two sides of the post-cast strip position, and performing waterproof protection on the X-axis steel bars 6 reserved at the post-cast strip position.

After the floor construction and maintenance are finished, the template is very convenient to remove, and the removing method comprises the following steps:

firstly, uncovering the plastic cloth, holding the central column 20, and reversely rotating the supporting screw pipe 13 to enable the supporting seat rod 12 to be loosened and separated from the templates 1 on two sides of the post-cast strip.

And releasing the positioning steel wires 10 bound on the X-axis steel bars 6.

Thirdly, the shovel blade is inserted into a gap between the upper piece 4 and the middle piece 3, the upper piece 4 is tilted upwards, the plug pin 8 is loosened from the plug hole 7, the upper piece 4 is held again, and the plug pin 8 in the upper piece 4 is taken out from the plug hole 7 in the middle piece 3.

Fourth, opening the middle piece 3, enabling the middle piece 3 and the lower piece 4 to be separated from the side surface of the poured and cured floor column concrete, enabling the middle piece 3 and the lower piece 5 to be inclined, then drawing out the middle piece 3, enabling the jack 7 in the middle piece 3 to be separated from the plug pin 8 in the lower piece 5, then taking out the middle piece 3, and then taking out the lower piece 5; and finishing the dismantling of the post-cast strip formwork supporting device.