CN116005953A - Template and method for elevator well construction - Google Patents

Abstract

The invention provides a template and a method for elevator well construction, relates to the technical field of pipe fitting machining, and aims to solve the problems that the machining precision is poor and the service life of a cutter is influenced due to the fact that the feeding quantity control precision is poor when a pipe fitting is cut into a socket at present, a limiting support is arranged to be combined with a cutting tool to realize progressive feeding cutting, two limiting wheels which are arranged at intervals on the limiting support are simultaneously abutted against a cylindrical die, the centering effect of the abutting position is realized, the cutting position of the cutting tool is kept to be positioned on a perpendicular bisector of a connecting line of the two limiting wheels, the retraction distance of the limiting support is consistent with the cutting depth of the cutter, and the control precision is improved to improve the durability and the stability of equipment.

Description

A formwork and method for elevator shaft construction

technical field

The invention relates to the technical field of shaft support molds, in particular to a template and method for elevator shaft construction.

Background technique

In the formwork engineering, the elevator shaft is formed by pouring after supporting the formwork. Therefore, the construction quality requirements for the supporting formwork of the elevator shaft are particularly important. At present, most of the formwork sites use wooden formwork scattered. When processing on site, the dimensional accuracy is poor and the materials in the shaft Multiple spaces are too small to be deployed, reinforcement is difficult, and support and dismantling are too complicated, which can easily cause the expansion mold to be wrong, and the net size and diagonal squareness of the inner cavity of the hoistway are poor, which affects the construction quality of the elevator hoistway. After the completion of the formwork, because the hoistway formwork will produce a ring pressure on the wellway formwork after the concrete is poured, all the edges and edges of the formwork joints will be pressed tightly without any gaps, making it difficult to remove the formwork. It takes time and effort to remove all the vertical cubes and turnaround to the construction layer. After the turnaround, the inner wall of the elevator shaft is uneven due to errors after the formwork is poured on each layer, and the molding quality is uneven.

At present, when metal formwork is used for construction, the dimensional accuracy can be reduced by means of bolt connection, etc., but it is still a loose construction method in essence, especially for narrow elevator shafts, it is inconvenient to splice, reinforce and dismantle the formwork. It is inconvenient to transfer the templates, and the construction of different layers is independent of each other, which is inconvenient to ensure the accuracy of construction and the quality of molding.

Contents of the invention

The purpose of the present invention is to provide a formwork and method for the construction of the elevator shaft in view of the defects in the prior art, which can be spliced using monomers with a bent structure to ensure the forming accuracy of the inner bottom corner of the elevator shaft. The combination of convex and concave parts is used to complete the docking of adjacent monomers, reduce the difficulty of connection operations to improve the efficiency of construction disassembly, reduce errors caused by loose formwork, and improve construction accuracy and molding quality.

The first purpose of the present invention is to provide a formwork for elevator shaft construction, adopting the following scheme:

It includes a single body and a fastener. The side edge of the single body is provided with a convex part or a concave part. The concave part of the butt splicing; the fastener is fastened to the concave part and the convex part of the butt splicing, and exerts a constraint force to maintain the position of the concave part and the convex part after the butt splicing.

Further, the monomer includes a base plate and a bar block, the bar block is installed on the edge of the base plate and combined with the base plate to form a concave or convex portion together, the base plate is a bent plate, and the two sides of the bending line correspond to the inner wall of the elevator shaft respectively. adjacent two sides.

Further, the base plate is a 90° bending plate, the bending line of the base plate is used to fit the bottom corner of the elevator shaft, and the axis of the strip block is parallel to the bending line of the base plate.

Further, the first bar-shaped block corresponding to the concave part shrinks in the edge of the substrate, and the first bar-shaped block is provided with a first inclined surface that bears the pressure of the convex part. A concave structure with an obtuse angle becomes a concave portion.

Further, the part of the second strip block corresponding to the protrusion protrudes out of the edge of the substrate to form a convex structure protruding from the substrate, becoming a protrusion; the protruding part of the second strip block is provided with a pressing recess the second inclined plane.

Further, the fastener includes a buckle and a tie rod, the buckle is fastened on the concave part and the convex part after butt jointing, and half surrounds the concave part and the convex part, and the tie rod is abutted against by the tension member. buckle.

Further, the single body is provided with an avoidance structure through which the pair of pull rods pass, and the avoidance structure is set on the concave part and the convex part.

Further, the fastener further includes a spacer, which is located on one side of the convex portion or the concave portion, and the spacer is embedded in the buckle together with the concave portion and the convex portion after butt jointing.

The second object of the present invention is to provide a working method utilizing formwork for elevator shaft construction as shown in the first object, comprising:

Configure the size and number of monomers according to the size of the elevator shaft;

Multiple units are hoisted into the elevator shaft, the bending line of the unit fits with the bottom corner of the inner wall of the elevator shaft, and the side of the unit fits with the side of the inner wall of the elevator shaft;

The edges of the adjacent monomers are butted and spliced by the convex part and the concave part, and the fastener is installed at the butt spliced position;

After the formwork is completed, it is poured and maintained. After the maintenance is completed, the monomer is removed and lifted to the next construction layer for reuse.

Further, after the installation of the fasteners in the elevator shaft is completed, the reinforcement couplings are installed so that the fasteners are connected as a whole, and the reinforcement couplings are removed first when the formwork is removed.

Compared with prior art, the advantages and positive effects that the present invention has are:

(1) In view of the current problems of inconvenient support and reinforcement of the mold in the elevator shaft and insufficient molding accuracy and quality, it is possible to use the single body with a bending structure for splicing to ensure the molding accuracy of the inner bottom corner of the elevator shaft. The combination of the upper part and the concave part completes the docking of adjacent monomers, reduces the difficulty of connection operation to improve the efficiency of construction disassembly, reduces the error caused by loose formwork, and improves construction accuracy and molding quality.

(2) The shape of the buckle is adapted to the combined shape of the bar block after butt jointing. The buckle covers the side of the bar block away from the substrate, and the buckle is also engaged on the side of the bar block to constrain the convex part and The combined state of the concave part avoids the loosening and detachment of the convex part and the concave part.

(3) Applying fasteners to the first strip block and the second strip block together can not only apply a fastening force in the direction perpendicular to the base plate, resist the pressure of the concrete towards the elevator shaft during pouring, but also use the action of the inclined plane to The fastening force is applied parallel to the direction of the base plate, resisting the expansion force along the horizontal direction of the elevator shaft wall when pouring concrete, and maintaining the stability of the mold.

Description of drawings

The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention, and the schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention.

Fig. 1 is a schematic diagram of a formwork used for elevator shaft construction in Embodiments 1 and 2 of the present invention.

Fig. 2 is a schematic diagram of the connection of the first monomer to the second monomer in Examples 1 and 2 of the present invention.

FIG. 3 is a schematic diagram of the substrate with the first strip block in Embodiments 1 and 2 of the present invention.

Fig. 4 is a schematic diagram of the end faces of the substrate with the first strip block in Embodiments 1 and 2 of the present invention.

Fig. 5 is a schematic structural view of the tie rods in Embodiments 1 and 2 of the present invention.

Fig. 6 is a schematic structural diagram of buckles in Embodiments 1 and 2 of the present invention.

Fig. 7 is a schematic diagram of a substrate with a second strip block in Embodiments 1 and 2 of the present invention.

Fig. 8 is a schematic diagram of the end face of the substrate with the second strip block in Embodiments 1 and 2 of the present invention.

Fig. 9 is a schematic diagram of multiple monomers installed in the hoistway in Embodiments 1 and 2 of the present invention.

Among them, 1. The first unit, 2. The tie rod, 3. Buckle, 4. The second unit, 5. The first bar, 6. The second bar, 7. Base plate, 8. Backing plate , 9. Reserved groove, 10. The first inclined surface, 11. The second inclined surface, 12. The elevator shaft, 13. The third unit, 14. The fourth unit.

Detailed ways

Example 1

In a typical embodiment of the present invention, as shown in Figures 1-9, a formwork for elevator shaft construction is provided.

In the formwork engineering, the formwork construction quality requirements in the elevator shaft are particularly important. During the construction, due to the large amount of materials in the shaft and the small space, it is inconvenient to operate, resulting in difficulty in reinforcement, which is likely to cause wrong expansion of the mold, affecting the net size of the inner cavity of the shaft and the squareness of the diagonal ; Traditional formwork construction requires complex reinforcement, which is affected by the narrow space of the well when the formwork is set up and removed, which makes it inconvenient for construction, resulting in low efficiency of formwork support and formwork removal, which affects construction efficiency.

Based on this, this embodiment provides a formwork for the construction of the elevator shaft. The convex part on the edge of the adjacent monomer is pressed against the concave part to realize the cooperative assembly. The monomer is an L-shaped bent plate, so as to ensure that the diagonal is square. degree, combined with reinforcements to form a formwork system, which is convenient for turnover construction; with the inclined surface of the assembly position, the draft angle is formed, which can facilitate the removal of the formwork after the fastener is released, and the fastener locks the convex and concave parts of the edge , to improve the stability of the formwork.

Below, the above-mentioned formwork used for elevator shaft construction will be described in detail with reference to the accompanying drawings.

Referring to Figure 1, the formwork used for the construction of the elevator shaft mainly includes multiple monomers. The common section of the elevator shaft 12 is square or rectangular. For the area of the elevator shaft 12 at the same height, four monomers are installed diagonally to form a support. Formwork for the inner wall of the elevator shaft 12.

The monomer includes a substrate 7 and a strip block. The substrate 7 is used as the main structure of the monomer, which is an L-shaped bent plate. The strip block is installed on the edge of the substrate 7. The edge position of the monomer pointed out in this embodiment refers to the The edge of the single body on the circumference of the elevator shaft 12 is based on the bending line of the base plate 7, and the end perpendicular to the bending line and away from the bending line is the edge of the base plate 7. The direction extending along the bending line is the length direction of the substrate 7 , and the direction perpendicular to the bending line and parallel to the plane of the bending plate is the width direction. The shape of the base plate 7 is adapted to the shape of the inner wall of the elevator shaft 12 .

The four monomers correspond to the four substrates 7, and the adjacent monomers are designed for docking structure. The corresponding substrate 7 is provided with strip blocks on the edge, and the docking structure is divided into a concave part and a convex part, and the concave part and the convex part can be docked and spliced. The bar-shaped block is pre-fixed on the substrate 7, and the two edge positions of the same substrate 7 can be configured with concave parts or convex parts at the same time, or one edge can be configured with concave parts, and the other edge can be configured with convex parts. It is determined according to the supporting template formed around, and the stacking and splicing relationship between adjacent monomers is established.

The first bar-shaped block 5 corresponding to the recess is shrunk in the edge of the substrate 7 as a whole, and the first bar-shaped block 5 is provided with adjacent first inclined surfaces 10 and first bottom surfaces distributed at acute angles, as shown in FIG. 4 , The first bottom surface of the first strip block 5 is attached to the substrate 7 , and the first inclined surface 10 faces another unit to be connected. Since there is a certain distance between the first bar-shaped block 5 and the edge of the substrate 7 connected thereto, an obtuse-angled concave structure is formed between the first inclined surface 10 and the edge of the substrate 7 , forming a concave portion.

For the convex part, one side of the corresponding second bar-shaped block 6 is connected to the substrate 7, and the other side protrudes out of the edge of the substrate 7. As shown in Figure 8, the second bar-shaped block 6 is provided with adjacent and obtuse angles. The second inclined surface 11 and the second bottom surface are distributed, the second bottom surface of the second strip block 6 is attached to the substrate 7, and the second inclined surface 11 faces another monomer to be docked. Since the second bar-shaped block 6 partially protrudes from the edge of the substrate 7 it is connected to, it forms a convex structure protruding from the substrate 7 and becomes a convex portion.

After the protrusions and recesses of adjacent monomers are matched, the first inclined surface 10 of the first strip block 5 of the recess is attached to the second inclined surface 11 of the second bar block 6 of the recess, thereby utilizing the inclined surface Assembled and combined into 180°. As shown in Figure 1, the concave portion of the first monomer 1 and the convex portion of the second monomer 4 are butted together, and the edge of the substrate 7 corresponding to the first strip block 5 can be matched with the edge of the substrate 7 corresponding to the second strip block 6. Fitting, when assembling, first install the monomer with the concave part in place, and then move the corresponding monomer with the convex part along the direction perpendicular to the bottom surface of the first bar block 5, so that the convex part is vertically pressed against the bottom surface of the first strip block 5 on the recess.

After the concave part and the convex part are assembled, a draft angle can be formed. When the mold is supported, the fasteners are applied to the first strip block 5 and the second strip block 6, and the fastening force can be applied in the direction perpendicular to the substrate 7. , to resist the pressure of concrete toward the direction of the elevator shaft 12 during pouring, and to apply a fastening force along the direction parallel to the base plate 7 by using the action of the inclined plane, to resist the expansion force along the horizontal direction of the inner wall of the elevator shaft 12 when pouring concrete, and to maintain the stability of the mold.

In this embodiment, the structure on one side of the bar block is designed for butt splicing, and no more requirements are made on the structure on the other side of the bar block. The side of the bar block away from the butt joint can adopt a vertical plane as shown in Figure 1, so that the bar block as a whole has a right-angled trapezoidal cross section; it is also possible to make the side of the bar block away from the butt joint use an inclined surface, so that the bar block The section is quadrilateral, and the angle of the configuration inclined surface is equal to the first inclined surface 10 and the second inclined surface 11, so that the section of the bar block can be an isosceles trapezoid or a parallelogram.

The fastener includes a buckle 3 and a pair of tie rods 2, the buckle 3 is fastened on the butt-jointed strip block, and one end of the pair of tie rods 2 passes through the buckle 3 and the monomer and connects to the template on the other side of the elevator shaft 12, The monocoque is fastened by setting tensioning members on the tie rods 2 .

As shown in Figure 1, after adjusting the cross-sectional shape of the strip block, the buckle 3 of the fastener is adapted accordingly. On the side of the bar-shaped block away from the base plate 7, the buckle 3 is also engaged on the side of the bar-shaped block to constrain the combined state of the convex part and the concave part, and avoid loosening and detachment of the convex part and the concave part.

The structure of the buckle 3 is concave, as shown in FIG. 6 , and can be engaged with the concave and convex parts after the two monomers are put together. The buckle 3 is capable of maintaining its shape when applying pressure to the tie rod 2, so that the pressure on the tie rod 2 is applied to the base plate 7 through the bar block, thereby resisting the pressure exerted by the concrete.

For the situation that the combined width of the first strip 5 and the second strip 6 does not match the buckle 3, a backing plate 8 can be added to the side of the first strip 5 or the second strip 6, Increasing the width makes the fit of the buckle 3 stable, and ensures the binding force of the buckle 3 along the direction parallel to the base plate 7 .

It should be pointed out that the recesses and protrusions are distributed along the axial direction of the strip blocks, and the strip blocks are distributed along the vertical direction of the elevator shaft 12, and are arranged parallel to the base plate 7 at the same time. After the matching position of the structure, the strip block is arranged in a long way between the two matching positions, which increases the matching range of the concave part and the convex part, improves the reinforcement effect and reduces the mold expansion problem.

Along the axial direction of the strip block, cooperate with multiple fasteners to reinforce the splicing position of the monomer from multiple points, as shown in Figure 2; in order to facilitate the tie rod 2 to pass through the monomer, the tie rod 2 to be installed Reserved holes or reserved grooves 9 are set on the monomer, as shown in Figure 3 and Figure 7, and the reserved holes or reserved grooves 9 are also distributed on the strip blocks of the monomer, and the recesses formed by the strip blocks The position where it abuts with the convex part is used as the key area for reinforcement, so as to avoid the dislocation of the expansion mold at this position.

A screw can be used for the tie rod 2, as shown in Figure 5, one end is connected with a limit baffle, and the other end can be matched with a tension member, and the tension member can be a nut, and the position of the nut on the screw rod can be adjusted to change the limit baffle The distance between the nut and the nut achieves the purpose of clamping the formwork.

On the other hand, as shown in Figure 9, in order to facilitate the disassembly and assembly of the monomer in the elevator shaft 12, the bar blocks provided at the end of the monomer are configured, with the side with the door of the elevator shaft 12 as the front, away from One side of the door of the elevator shaft 12 is the back, and the two sides adjacent to one side of the door of the elevator shaft 12 are the sides; the edges on both sides of the first unit 1 are recessed, and the bending line of the substrate 7 of the first unit 1 is attached to the A bottom corner at the back of the elevator shaft 12, the substrates 7 on both sides of the bending line are attached to the back and one side respectively; one side edge of the second monomer 4 is a convex part, and the other side edge is a concave part, and the second monomer 4 The bending line of the base plate 7 is attached to the other bottom corner at the back of the elevator shaft 12. The base plate 7 on both sides of the bending line is respectively attached to the back and the other side. The recess abuts on the rear of the elevator shaft 12 .

A side edge of the third unit 13 and the fourth unit 14 is provided with a convex portion, and the bending line of the substrate 7 of the third unit 13 is attached to a bottom corner of the front of the elevator shaft 12, and the substrate 7 on both sides of the bending line Fit the front and one side respectively, the convex part of the third elastic body and the concave part of the second unit 4 are butted on one side of the elevator shaft 12; the bending line of the base plate 7 of the fourth unit 14 is attached to the elevator shaft 12 At the other bottom corner of the front, the bending line fits the front and the other side respectively, and the convex part of the fourth unit 14 abuts with the concave part of the first unit 1 on the other side of the elevator shaft 12 .

It should be noted that the four monomers are all L-shaped structures, and the position corresponding to the bottom corner of the elevator shaft 12 is a pre-bent structure of the substrate 7 of the single body. This pre-bent structure can ensure that the inner cavity of the elevator shaft 12 Diagonal squareness after forming. After the four monomers are joined together, a support formwork for the inner cavity of the elevator shaft 12 is formed, and the shape of the outer ring of the support formwork is the same as that of the inner wall of the elevator shaft 12 to be poured.

In actual use, the single bar block can be pre-connected with the base plate 7, and can be customized and produced in the factory. The inclined surface of the bar block corresponding to the concave part is adapted to the inclined surface of the bar block corresponding to the convex part. After the blocks are assembled, the assembly reaches 180° to naturally form a draft angle, and after being reinforced with fasteners, the corresponding substrates 7 of the monomers are combined to form a complete plane. After the monomers on the same floor are arranged in the elevator shaft 12, then the fasteners in the elevator shaft 12 are connected as a whole through L-shaped or U-shaped reinforcement connectors to improve the strength of the supporting formwork formed by the monomers.

The four L-shaped monomers are installed corresponding to the bottom corners of the elevator shaft 12. The bottom corners of the elevator shaft 12 are internal corners, and then the fasteners are assembled with the monomers using tensioning parts according to the designed method and locked. The wall-penetrating screw is used to establish the connection between the inner formwork formed by the single body and the outer formwork of the elevator shaft 12, and the wall-penetrating screw is pulled out after the concrete is poured and cured.

When removing the formwork, first remove the third unit 13 with the convex part, and then remove the second unit 4, the fourth unit 14 and the first unit 1 in sequence. .

The convex portion at the end of the L-shaped monomer forms a draft angle, and at the same time, the size of the L-shaped monomer is smaller than the horizontal width and length of the elevator shaft 12, and the four monomers after dismantling can be gathered together in the elevator shaft 12, and then hoisted to the next construction layer in the elevator shaft 12, repeating the assembling method of the previous layer for turnover.

Example 2

In another typical implementation of the present invention, as shown in Fig. 1-Fig. 9, a working method is provided.

Utilize the formwork that is used for elevator hoistway construction as described in embodiment 1, comprise:

Configure the size and number of monomers according to the size of the elevator shaft 12;

A plurality of monomers are hoisted into the elevator shaft 12, the bending line of the monomers is attached to the bottom corner of the inner wall of the elevator shaft 12, and the sides of the monomers are attached to the sides of the inner wall of the elevator shaft 12;

The edges of the adjacent monomers are butted and spliced by the convex part and the concave part, and the fastener is installed at the butt spliced position;

After the formwork is completed, it is poured and maintained. After the maintenance is completed, the monomer is removed and lifted to the next construction layer for reuse.

In conjunction with Embodiment 1, for the elevator shaft 12 whose horizontal section is square or rectangular, in order to facilitate the disassembly and assembly of the monomer in the elevator shaft 12, the strip blocks provided at the end of the monomer are configured to have the elevator shaft 12. One side of the door is the front, the side away from the elevator shaft 12 doors is the back, and the two sides adjacent to the elevator shaft 12 doors on one side are sides.

The edges on both sides of the first unit 1 are recessed, and the bending line of the substrate 7 of the first unit 1 is attached to a bottom corner at the back of the elevator shaft 12, and the substrates 7 on both sides of the bending line are respectively attached to the rear and a side. ; One side edge of the second monomer 4 is a convex portion, and the other side edge is a concave portion, and the bending line of the substrate 7 of the second monomer 4 is attached to the other bottom corner behind the elevator shaft 12. The base plate 7 is attached to the back and the other side respectively, and the convex part of the second unit 4 and the concave part of the first unit 1 are butted on the back of the elevator shaft 12 .

A side edge of the third unit 13 and the fourth unit 14 is provided with a convex portion, and the bending line of the substrate 7 of the third unit 13 is attached to a bottom corner of the front of the elevator shaft 12, and the substrate 7 on both sides of the bending line Fit the front and one side respectively, the convex part of the third elastic body and the concave part of the second unit 4 are butted on one side of the elevator shaft 12; the bending line of the base plate 7 of the fourth unit 14 is attached to the elevator shaft 12 At the other bottom corner of the front, the bending line fits the front and the other side respectively, and the convex part of the fourth unit 14 abuts with the concave part of the first unit 1 on the other side of the elevator shaft 12 .

When removing the formwork, first remove the third unit 13 with the convex part, and then remove the second unit 4, the fourth unit 14 and the first unit 1 in sequence. .

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A template for elevator shaft construction, characterized in that it includes a monomer and a fastener, the side edge of the monomer is provided with a convex portion or a concave portion, and the convex portion/concave can be connected to the side edge of the adjacent monomer The concave part/convex part of the position is butt spliced, and the convex part can be pressed against the concave part to be spliced; the fastener is fastened to the concave part and the convex part of the butt spliced, and exerts a binding force to maintain the position of the concave part and the convex part after the butt spliced. 2. The template for elevator shaft construction as claimed in claim 1, wherein the monomer comprises a base plate and a strip block, and the strip block is installed on the edge of the base plate and combined with the base plate to form a concave or convex portion, and the base plate It is a bent plate, and the two sides of the bent line correspond to the two adjacent sides of the inner wall of the elevator shaft respectively. 3. The formwork for elevator shaft construction as claimed in claim 2, wherein the base plate is a 90° bent plate, the bending line of the base plate is used to fit the bottom angle of the elevator shaft, and the axis of the strip block Bend lines parallel to the base plate. 4. The formwork used for elevator shaft construction according to claim 2, wherein the first strip-shaped block corresponding to the concave portion shrinks in the edge of the base plate, and the first strip-shaped block is provided with a bearing convex portion to resist The first inclined surface is pressed, and an obtuse angled concave structure is formed between the first inclined surface and the edge of the substrate, forming a concave portion. 5. The formwork used for elevator shaft construction according to claim 2, wherein the second bar-shaped block part corresponding to the convex portion protrudes out of the edge of the substrate to form a convex structure protruding from the substrate, forming a The protruding part; the protruding part of the second bar-shaped block is provided with a second inclined surface for pressing against the concave part. 6. The formwork for elevator shaft construction according to claim 1, wherein the fasteners include buckles and tie rods, the buckles are fastened on the concave and convex parts after butt splicing, and The concave part and the convex part are semi-surrounded, and the pull rod abuts against the buckle through the tension piece. 7. The formwork for elevator shaft construction according to claim 6, characterized in that, said single body is provided with an avoidance structure through which the pair of tie rods pass, and the avoidance structure is set on the concave part and the convex part. 8. The formwork for elevator shaft construction as claimed in claim 6, wherein the fasteners also include a spacer, the spacer is located on one side of the convex portion or the concave portion, and the spacer is combined with the concave portion and the concave portion after butt splicing. The convex parts are embedded in the buckle together. 9. A working method for a formwork for elevator shaft construction according to any one of claims 1-8, characterized in that, comprising: Configure the size and number of monomers according to the size of the elevator shaft; Multiple units are hoisted into the elevator shaft, the bending line of the unit fits with the bottom corner of the inner wall of the elevator shaft, and the side of the unit fits with the side of the inner wall of the elevator shaft; The edges of the adjacent monomers are butted and spliced by the convex part and the concave part, and the fastener is installed at the butt spliced position; After the formwork is completed, it is poured and maintained. After the maintenance is completed, the monomer is removed and lifted to the next construction layer for reuse. 10. The working method as claimed in claim 9, characterized in that, after the installation of the fasteners in the elevator shaft is completed, the reinforcement couplings are installed to connect the fasteners as a whole, and the reinforcement couplings are first removed when demoulding.

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