Segmented precast concrete stair abutted seam processing assembly

Abstract

The utility model discloses a sectional type precast concrete stair abutted seam processing assembly. A sectional type precast concrete stair comprises a left stair body and a right stair body which are spliced on a mounting position with the upper side and the lower side being of a stair structure in a left-right mode. The abutted seam processing assembly comprises a first positioning component arranged between the left stairway and the installation position and between the right stairway and the installation position, and a second positioning component arranged between the left stairway and the right stairway. By the adoption of the sectional type prefabricated stairs, the problem that hoisting cannot be conducted due to overweight during construction hoisting is solved, and the mechanical use cost is reduced. The blind groove is reserved in the prefabricated stair, the bearing capacity of the stair structure can be improved through the exposed reinforcing steel bars, and the stability of the whole structure is improved. The abutted seam processing assembly blocks the bottom side of the joint of the left stair and the right stair, so that after concrete is poured, the concrete can be prevented from directly flowing out, and the effective joint pouring amount and the connection integrity are guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of prefabricated staircase assembly, and in particular to a segmented prefabricated concrete staircase joint processing assembly. Background Art

[0002] With the continuous development of building industrialization, prefabricated staircases are increasingly used in construction projects. In the process of hoisting, the integral prefabricated staircase needs to consider the selection of machinery to reduce the cost of machinery. Therefore, in order to facilitate construction and reduce the cost of hoisting prefabricated stairs, the stairs are generally prefabricated in sections during the in-depth design. This can not only reduce the hoisting weight of the prefabricated stairs, but also improve the utilization rate of the prefabricated staircase mold. However, in the process of splicing the segmented prefabricated staircase segments, the treatment of the joints is a key issue, which directly affects the overall quality and service life of the stairs. Therefore, it is of great practical significance to study the construction of the joint treatment of prefabricated staircase segments.

[0003] The assembly of the current sectional prefabricated staircase is as shown in the attached instructions. Figure 1-3 As shown in the figure, a conventional single staircase is divided into a left staircase and a right staircase. The division can effectively reduce the weight and cost of the staircase. Figure 3 As shown in the figure, hoist the left and right stairs respectively and place them on the reserved installation positions of the building, and Figure 3 As shown by the middle arrow, the left staircase is brought close to the right staircase for assembly. In order to improve the fastening of the prefabricated staircase and the building (installation position) after assembly, Figure 4-5 As shown, it is usually necessary to lay a concrete layer connected to the stairs on the installation position, and the prefabricated stairs and the installation position are connected to form an integral structure through the concrete layer to improve the stability of the stairs and the building.

[0004] The concrete laid on the installation site can usually be adhered and fastened to the prefabricated stairs only in the unsolidified state. When the prefabricated stairs are hoisted and placed on the concrete layer, the weight of the prefabricated stairs will squeeze the unsolidified concrete layer (such as Figure 6 As shown in the figure, the installation position of the prefabricated stairs is lowered, causing the stairs to be not flush with the top surface of the installation position. At the same time, the thickness of the concrete layer after extrusion is reduced, which reduces the tightness of the adhesion. If the prefabricated stairs are continuously hoisted to avoid squeezing the concrete layer, the hoisting waiting time will be too long, reducing the construction efficiency.

[0005] In addition, concrete is usually poured at the joint between the left and right stairs of the sectional staircase to adhere the two together. However, the poured concrete will flow out from the bottom of the joint between the left and right stairs, and an effective pouring amount cannot be achieved, which makes the overall stability of the sectional prefabricated staircase poor. Summary of the invention

[0006] In response to the above-mentioned problems, the present application aims to provide a segmented precast concrete staircase joint processing component, which achieves the positional accuracy between the precast staircase and the installation position, and at the same time seals the bottom side of the joints between the left and right stairs, thereby preventing the concrete from flowing out directly after pouring the concrete, thereby ensuring the effective joint pouring volume and the integrity of the connection.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted in the present application is as follows: a segmented precast concrete staircase joint processing assembly, the segmented precast concrete staircase includes a left staircase and a right staircase spliced ​​left and right on an installation position with a staircase structure on the upper and lower sides, characterized in that: the joint processing assembly includes a first positioning component arranged between the left staircase and the right staircase and the installation position, and a second positioning component arranged between the left staircase and the right staircase.

[0008] Preferably, the first positioning member is a positioning template arranged at the outside of the installation position and having the same thickness as the flat seam between the left and right stairs and the installation position, and the positioning template is in contact with the bottom surface of the left and right stairs.

[0009] Preferably, the positioning template is a T-shaped structure, including a positioning side edge in contact with the side wall of the installation position, and an extension portion in contact with the left staircase and the right staircase.

[0010] Preferably, the second positioning member comprises a blocking template attached to the bottom sides of the left staircase and the right staircase, and a fixed pull rod extending from between the left staircase and the right staircase is connected to the blocking template.

[0011] The beneficial effects of the present application are as follows: the present application solves the problem of being unable to lift due to overweight during construction by adopting segmented prefabricated stairs, thereby reducing the cost of using machinery. The prefabricated stairs have reserved blind grooves, and the exposed reinforcing steel bars can increase the bearing capacity of the staircase structure and improve the stability of the overall structure. The design of the blind groove can avoid longitudinal cracks between the stairs during later decoration and renovation, reduce the damage to the staircase structure caused by earthquakes, provide space for later maintenance and reinforcement, and facilitate construction operations.

[0012] The joint processing component seals the bottom side of the joint between the left and right stairs, thereby preventing the concrete from flowing out directly after pouring the concrete, thereby ensuring an effective joint pouring volume and the integrity of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a diagram showing the current assembly of segmented precast concrete stairs.

[0014] Figure 2 for Figure 1 Top view.

[0015] Figure 3 Illustration of the splicing process of the left and right stairs.

[0016] Figure 4 for Figure 1 Enlarged view of the structure at point A in the middle.

[0017] Figure 5 Illustration of the concrete bonding process between the prefabricated stairs and the installation location.

[0018] Figure 6 Illustration of the extrusion caused by the precast stairs coming into contact with uncured concrete.

[0019] Figure 7 A positioning template is set up for this application to illustrate the positioning of the prefabricated stairs.

[0020] Figure 8 The positioning template for this application is used to illustrate the horizontal limiting structure of the prefabricated stairs.

[0021] Fig. 9 Illustration of the blind groove structure reserved on the back side of the left and right stairs for this application.

[0022] Fig.10 This is a diagram illustrating the assembly process of the second positioning mechanism of the present application.

[0023] Fig.11 This is a diagram showing the assembly of the second positioning mechanism of the present application with the left staircase and the right staircase.

[0024] Fig.12 For this application Fig.11 Enlarged view of the structure at point B.

[0025] Fig.13 This is a diagram showing the left and right stairs connected after caulking for this application.

[0026] Fig.14 This is a physical diagram of the current segmented prefabricated staircase assembly.

[0027] In the figure: 2a-blind groove; 2b-reinforcement steel bar; 6-pin; 7-concrete. DETAILED DESCRIPTION

[0028] In order to enable ordinary technicians in the field to better understand the technical solution of the present application, the technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0029] Refer to the attached Figures 1 to 13 The sectional precast concrete staircase joint processing assembly shown in the figure comprises a left staircase 21 and a right staircase 22 which are spliced ​​on the left and right sides of the installation position 1 with the staircase structure on the upper and lower sides. The hoisting and splicing process is as follows Figure 1-5In order to achieve bonding of the prefabricated stairs (left stairs 21 and right stairs 22) with the concrete layer laid between the installation positions, ensure the position accuracy of the prefabricated stairs installation, and smoothly pour concrete between the segmented left stairs 21 and right stairs 22, the present application is provided with a joint processing assembly, which includes a first positioning member arranged between the left stairs 21 and the right stairs 22 and the installation position 1, the first positioning member drives the left stairs 21 and the right stairs 22 to connect with the concrete laid on the installation position 1, and at the same time limits the squeezing of the left stairs 21 and the right stairs 22 on the concrete, thereby ensuring the installation position accuracy of the left stairs 21 and the right stairs 22 with the installation position 1 on the basis of achieving bonding tightness.

[0030] The joint processing assembly also includes a second positioning member disposed between the left staircase 21 and the right staircase 22. The second positioning member can block the bottom side of the joint between the left staircase 21 and the right staircase 22, thereby preventing the concrete from flowing out directly after pouring the concrete, thereby ensuring an effective joint pouring amount and connection integrity.

[0031] Specifically, Figure 7 As shown, the first positioning member is a positioning template 3 arranged outside the installation position 1 and having the same thickness as the flat joint between the left staircase 21 and the right staircase 22 and the installation position 1. The positioning template 3 is in contact with the bottom surface of the left staircase 21 and the right staircase 22. After laying the concrete layer, the positioning template 3 is placed outside the installation position 1, as shown in FIG. Figure 7 As shown, the prefabricated stairs (left staircase 21 and right staircase 22) are then hoisted and placed on the installation template 3 and supported, and the bottom surface of the prefabricated stairs is in contact with the concrete, and then the prefabricated stairs are bonded to the installation position 1 after the concrete solidifies, thereby effectively solving the problem of the installation position lowering caused by the prefabricated stairs squeezing the unsolidified concrete.

[0032] During the process of hoisting and placing the prefabricated stairs, the prefabricated stairs will move. Figure 7 The movement in the direction of the middle arrow will also drive the movement of the positioning template 3, causing the deviation of the installation position of the prefabricated stairs, so the problem is not solved. Figure 8 As shown, the positioning template 3 is a T-shaped structure, including a positioning side edge 31 in contact with the side wall of the installation position 1, and an extension portion 32 in contact with the left staircase 21 and the right staircase 22. When the prefabricated staircase is hoisted and placed, the extension portion 32 of the positioning template 3 is in contact with the corner of the bottom surface of the prefabricated staircase ( Figure 8 As shown), the positioning side edge 31 of the positioning template 3 is then in contact with the side wall of the installation position 1 ( Figure 8 As shown), the horizontal spacing between the prefabricated stairs and the installation position 1 is achieved, ensuring that the concrete between the vertical side walls on both sides is not squeezed, while also limiting the horizontal displacement of the prefabricated stairs and the positioning template 3.

[0033] In order to achieve that more concrete can be accommodated between the connected left staircase 21 and the right staircase 22 to improve the integrity of the two, such as Fig. 9 As shown, a blind groove is reserved at the bottom surface where the left staircase 21 and the right staircase 22 meet, and a reinforcing steel bar extends out of the blind groove. Figure 10-12 As shown, the second positioning member includes a blocking template 4 attached to the bottom side of the left staircase 21 and the right staircase 22, and a fixed rod 5 passing through between the left staircase 21 and the right staircase 22 is connected to the blocking template 4. The fixed rod 5 is preferably a thin sheet structure, which is passed through the joint between the left staircase 21 and the right staircase 22, and after the bottom end thereof passes through the blocking template 4, a pin is selected to be horizontally inserted in the fixed rod 5, so that the fixed rod 5 can lift the blocking template 4 upward to contact the bottom surface of the left staircase 21 and the right staircase 22 and block the bottom of the blind grooves on both sides, and then a pin is also inserted in the upper part of the fixed rod 5, so that the fixed rod 5 can tighten the blocking template 4. The fixed tie rods 5 are arranged at intervals on the blocking template 4, so that the concrete pouring construction can be carried out between the adjacent fixed tie rods 5, and the poured concrete enters the blind grooves on both sides and covers the exposed reinforcing steel bars. After solidification, the left staircase 21 and the right staircase 22 can be fastened and connected by the reinforcing steel bars. After the upper and lower pins are pulled out, the blocking template 4 is disassembled, and the excess part of the fixed tie rods 5 exceeding the left staircase 21 and the right staircase 22 is sawed off, so that the concrete pouring at the joint of the left staircase 21 and the right staircase 22 can be smoothly realized, and the connection fastness of the sectional prefabricated staircase can be improved.

[0034] The thickness of the fixed tie rod 5 is preferably equal to the joint width of the left staircase 21 and the right staircase 22. When the prefabricated stairs are spliced, the contact with the fixed tie rod 5 can ensure the consistency of the reserved joint width.

[0035] The principle of the present application is: when splicing the sectional prefabricated stairs, first place the positioning template 3 at the corner of the installation position 1, lay concrete on the horizontal plane of the installation position 1 according to the thickness of the positioning template 3, then hoist the left staircase 21 and the right staircase 22 onto the positioning template 3, and make the extension 32 of the positioning template 3 contact the corner of the bottom surface of the prefabricated stairs, then penetrate the fixed tie rod 5, and tie it with the blocking template 4, at the same time adjust the left staircase 21 and the right staircase 22 to be connected with the fixed tie rod 5, and then pour concrete between the prefabricated stairs and the vertical side wall of the installation position, and pour concrete in the joints, after the concrete solidifies, saw off the redundant fixed tie rod 5, and the positioning and stable splicing construction of the sectional prefabricated stairs can be realized.

[0036] The above shows and describes the basic principles, main features and advantages of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, which fall within the scope of the present application to be protected.

Claims

1. A segmented precast concrete stair joint processing assembly, the segmented precast concrete staircase comprising a left staircase (21) and a right staircase (22) spliced ​​on the left and right sides of an installation position (1) with a staircase structure on the upper and lower sides, characterized in that: The seam processing assembly comprises a first positioning member arranged between the left staircase (21) and the right staircase (22) and the installation position (1), and a second positioning member arranged between the left staircase (21) and the right staircase (22); The first positioning member is a positioning template (3) arranged outside the installation position (1) and having the same thickness as the flat joint between the left staircase (21) and the right staircase (22) and the installation position (1), and the positioning template (3) is in contact with the bottom surface of the left staircase (21) and the right staircase (22); The second positioning member comprises a blocking template (4) attached to the bottom sides of the left staircase (21) and the right staircase (22), and a fixed pull rod (5) extending from between the left staircase (21) and the right staircase (22) is connected to the blocking template (4).

2. The seam processing assembly according to claim 1, characterized in that: The positioning template (3) is a T-shaped structure, comprising a positioning side edge (31) in contact with the side wall of the installation position (1), and an extension portion (32) in contact with the left staircase (21) and the right staircase (22).

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