A construction method of a tower crane foundation node

Abstract

The application discloses a tower crane foundation node construction method, comprising the following steps: for the tower crane foundation with position overlapping with the basement post-cast strip, lowering the elevation of the tower crane foundation to the bottom of the basement foundation bottom plate, pouring the pile cap in the range of the tower crane foundation and the tower crane foundation at the same time; laying waterproof coiled material on the tower crane foundation construction joint, reserving the waterproof coiled material fling groove; pouring the tower crane foundation, installing the tower crane standard section on the tower crane foundation; laying waterproof coiled material on the foundation bottom plate construction joint, binding the reinforcement and pouring the concrete of the foundation bottom plate, reserving the post-cast strip pouring area; connecting the waterproof coiled material fling groove and the waterproof coiled material lap joint part, forming the coiled material waterproof layer; pouring and forming the post-cast strip, and cutting the bottom standard section steel frame. The application optimizes and adjusts the method of the tower crane foundation and the basement bottom plate, realizes that the plane position adjustment is not made for both of them under the condition that the tower crane position and the post-cast strip position are limited, and meets the design requirements of the tower crane operation range and the post-cast strip.

Description

Technical Field

[0001] This invention relates to the field of tower crane foundation node construction technology in building engineering, and specifically to a tower crane foundation node construction method. Background Technology

[0002] During construction, the placement of tower cranes must consider both proximity to the tower and the ability of the operating radius to cover the construction area. Therefore, the positions of tower cranes are often relatively fixed. When the tower crane position overlaps with or conflicts with the location of the basement's post-cast strip, the location of the post-cast strip is usually not adjustable due to civil defense issues and spacing limitations. In this case, if the tower crane foundation is used to avoid the post-cast strip, the tower crane's operating range may not cover the construction area, or additional tower cranes may need to be added. If the tower crane foundation is cast integrally with the basement foundation slab in its original position, the design requirements cannot be met.

[0003] To address the aforementioned technical problems, this invention proposes a construction method for tower crane foundation nodes. Summary of the Invention

[0004] The purpose of this invention is to provide a construction method for tower crane foundation nodes. This method optimizes and adjusts the construction of the tower crane foundation and the basement floor slab when the tower crane foundation and the post-cast strip overlap and conflict. This allows for the elimination of planar position adjustments for both when the positions of the tower crane and the post-cast strip are limited, while simultaneously meeting the tower crane's operating range and the design requirements of the post-cast strip.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A method for constructing tower crane foundation nodes includes the following steps:

[0007] S1. For tower crane foundations that overlap with the basement post-cast strip, lower their elevation to the bottom of the basement foundation slab. When the tower crane foundation uses engineering piles, pour the pile cap within the tower crane foundation area at the same time as the tower crane foundation, so that the top of the tower crane foundation is flush with the bottom of the basement post-cast strip foundation slab.

[0008] S2. During the construction of the tower crane foundation, waterproof membrane shall be laid at the construction joint of the tower crane foundation in accordance with the waterproof requirements for the basement foundation slab, and a gap shall be reserved for the waterproof membrane to be laid out.

[0009] S3. After the tower crane foundation is poured, install the standard tower crane sections on the tower crane foundation;

[0010] S4. Lay waterproof membrane at the construction joint of the foundation slab, reserve the overlap of the waterproof membrane at the bottom of the foundation slab, carry out the reinforcement binding and concrete pouring of the foundation slab, and reserve the area for the post-pouring strip to be poured.

[0011] S5. Connect the reserved waterproof membrane overlap with the waterproof membrane joint to form a waterproof membrane layer covering the foundation slab and tower crane foundation.

[0012] S6. Pour concrete into the area to be poured in the post-pouring strip to form the post-pouring strip. Cut off the bottom standard section of the steel frame at the top of the foundation slab, with the cut surface flush with the upper surface of the foundation slab, and complete the dismantling of the tower crane.

[0013] Furthermore, in step S1, when the pile cap and tower crane foundation within the tower crane foundation area are poured simultaneously, the pile cap and tower crane foundation within the tower crane foundation area must be reinforced with reinforcement according to construction and permanent loads.

[0014] Furthermore, in step S2, the step of laying waterproof membrane on the tower crane foundation and reserving a joint for the waterproof membrane specifically involves laying waterproof membrane at the construction joints at the bottom, side walls, and top of the tower crane foundation, and reserving a joint for the waterproof membrane at the top of the tower crane foundation.

[0015] Furthermore, in step S2, the reserved length of the waterproof membrane stretching is 500mm.

[0016] Furthermore, in step S4, the foundation slab undergoes reinforcement binding and concrete pouring, and a post-pouring strip area is reserved for pouring, specifically including:

[0017] The top and bottom reinforcement bars of the foundation slab are tied.

[0018] In the area where the foundation slab overlaps with the standard section of the tower crane, steel wire mesh is used to separate the area to be poured for the foundation slab and the area to be poured for the post-pouring strip.

[0019] Concrete pouring is carried out in the area of ​​the foundation slab to be poured.

[0020] Furthermore, the post-cast strip is formed by casting with expansion concrete.

[0021] By adopting the above solution, the present invention has the following beneficial effects:

[0022] 1) This invention provides a method that facilitates on-site construction while ensuring design requirements when the locations of tower crane foundations and post-cast strips are both limited;

[0023] 2) Combining the construction of the tower crane foundation and the foundation slab with the construction of the post-pouring strip results in a more effective waterproofing membrane.

[0024] 3) It reduces construction difficulty and saves construction costs. Attached Figure Description

[0025] Figure 1 This is a flowchart illustrating a construction method for tower crane foundation nodes according to an embodiment of the present invention;

[0026] Figure 2 This invention provides a construction method and procedure for tower crane foundation nodes. Figure 1 ;

[0027] Figure 3 This invention provides a construction method and procedure for tower crane foundation nodes. Figure 2 .

[0028] Label Explanation

[0029] Tower crane foundation 10, pile cap 11, waterproof membrane overlap 12, foundation slab 20, waterproof membrane overlap 21, slab top reinforcement 22, slab bottom reinforcement 23, post-pouring strip 30, tower crane standard section 40, wire mesh 50, waterproof membrane layer 60, plain concrete cushion layer 70. Detailed Implementation

[0030] like Figure 1-3 As shown, this invention discloses a construction method for tower crane foundation nodes, the construction steps of which are as follows:

[0031] S1. For the tower crane foundation 10 that overlaps with the basement post-pouring strip 30, its elevation is lowered to the bottom of the basement foundation slab 20. When the tower crane foundation 10 utilizes engineering piles, the pile cap 11 within the range of the tower crane foundation 10 is poured simultaneously with the tower crane foundation 10, so that the top of the tower crane foundation 10 is flush with the bottom of the basement foundation slab 20 of the basement post-pouring strip 30. A plain concrete pad 70 is laid at the bottom of the tower crane foundation 10. When the pile cap within the range of the tower crane foundation 10 is poured simultaneously with the tower crane foundation 10, the pile cap 11 within the range of the tower crane foundation 10 and the tower crane foundation 10 must be reinforced simultaneously according to the construction and permanent load requirements.

[0032] S2, such as Figure 2 As shown, during the construction of the tower crane foundation 10, waterproof membrane is laid at the construction joint of the tower crane foundation 10 according to the external waterproofing requirements of the basement foundation slab 20, and a waterproof membrane extension 12 is reserved. Specifically, the waterproof membrane is laid at the construction joints of the bottom, side walls and top of the tower crane foundation 10, and a waterproof membrane extension 12 is reserved at the top of the tower crane foundation 10. The length of the reserved waterproof membrane extension 12 is preferably 500mm, and its specifications can also be adjusted according to the construction design requirements.

[0033] S3, such as Figure 2 As shown, after the tower crane foundation 10 is poured, the tower crane standard section 40 is installed on the tower crane foundation 10;

[0034] S4, such as Figure 2As shown, according to the construction process, waterproof membrane is laid at the construction joint of the foundation slab 20, and an overlap 21 of the waterproof membrane is reserved at the bottom of the foundation slab 20. The foundation slab 20 is then reinforced with steel bars and concrete is poured, with a reserved area for the post-pouring strip 30. The specific construction process of the foundation slab 20 includes:

[0035] The top reinforcement 22 and bottom reinforcement 23 of the foundation slab 20 are tied together.

[0036] The area where the foundation slab 20 overlaps with the tower crane standard section 40 is separated by wire mesh 50, forming the area to be poured for the foundation slab 20 and the area to be poured for the post-pouring strip 30.

[0037] Concrete pouring is carried out in the area to be poured in the foundation slab 20 to form the foundation slab 20.

[0038] S5, such as Figure 3 As shown, the reserved waterproof membrane splice 12 is connected to the waterproof membrane overlap 21 to form a waterproof membrane layer 60 covering the foundation slab 20 and the tower crane foundation 10, so as to ensure the integrity of the external waterproofing.

[0039] S6, such as Figure 3 As shown, concrete is poured in the area to be poured in the post-pouring strip 30 to form the post-pouring strip 30. Then, the bottom standard section steel frame is cut off directly on the top of the foundation plate 20, with the cut surface flush with the upper surface of the foundation plate 20, thus completing the dismantling of the tower crane.

[0040] As a further preferred embodiment, a water-stop steel sheet is also provided in the connection area of ​​the post-pouring strip 30 of the foundation plate 20, which is used to stop water around the post-pouring strip 30 and make it converge to the middle area of ​​the post-pouring strip 30.

[0041] The tower crane foundation node construction method disclosed in this embodiment has the following advantages: By optimizing and adjusting the construction methods of the tower crane foundation 10 and the foundation base plate 20, this invention achieves a method that is convenient for on-site construction while ensuring design requirements, even when the positions of the tower crane foundation 10 and the post-pouring strip 30 are limited. Moreover, by combining the construction joints of the tower crane foundation 10 and the foundation base plate 20 with the construction of the post-pouring strip 30, the resulting waterproof membrane layer 60 has a better waterproof effect, reduces construction difficulty, and saves construction costs.

[0042] The above description is merely an example of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for constructing tower crane foundation nodes, characterized in that... This includes the following steps: S1. For tower crane foundations that overlap with the basement post-cast strip, lower their elevation to the bottom of the basement foundation slab. When the tower crane foundation uses engineering piles, pour the pile cap within the tower crane foundation area at the same time as the tower crane foundation, so that the top of the tower crane foundation is flush with the bottom of the basement post-cast strip foundation slab. S2. During the construction of the tower crane foundation, waterproof membrane shall be laid at the construction joint of the tower crane foundation in accordance with the waterproof requirements for the basement foundation slab, and a gap shall be reserved for the waterproof membrane to be laid out. S3. After the tower crane foundation is poured, install the standard tower crane sections on the tower crane foundation; S4. Lay waterproof membrane at the construction joint of the foundation slab, reserve the overlap of the waterproof membrane at the bottom of the foundation slab, carry out the reinforcement binding and concrete pouring of the foundation slab, and reserve the area for the post-pouring strip to be poured. S5. Connect the reserved waterproof membrane overlap with the waterproof membrane joint to form a waterproof membrane layer covering the foundation slab and tower crane foundation. S6. Pour concrete into the area to be poured in the post-pouring strip to form the post-pouring strip. Cut off the bottom standard section of the steel frame at the top of the foundation slab, with the cut surface flush with the upper surface of the foundation slab, and complete the dismantling of the tower crane.

2. The tower crane foundation node construction method as described in claim 1, characterized in that: In step S1, when the pile cap and tower crane foundation within the tower crane foundation area are poured simultaneously, the pile cap and tower crane foundation within the tower crane foundation area must be reinforced with reinforcement according to construction and permanent loads.

3. The tower crane foundation node construction method as described in claim 1, characterized in that: In step S2, the step of laying waterproof membrane on the tower crane foundation and reserving a joint for the waterproof membrane specifically involves laying waterproof membrane at the construction joints at the bottom, side walls, and top of the tower crane foundation, and reserving a joint for the waterproof membrane at the top of the tower crane foundation.

4. The tower crane foundation node construction method as described in claim 1, characterized in that: In step S2, the reserved length of the waterproof membrane stretching is 500mm.

5. The tower crane foundation node construction method as described in claim 1, characterized in that: In step S4, the foundation slab undergoes reinforcement binding and concrete pouring, with a reserved area for the post-pouring strip. Specifically, this includes: The top and bottom reinforcement bars of the foundation slab are tied. In the area where the foundation slab overlaps with the standard section of the tower crane, steel wire mesh is used to separate the area to be poured for the foundation slab and the area to be poured for the post-pouring strip. Concrete pouring is carried out in the area of ​​the foundation slab to be poured.

6. The tower crane foundation node construction method as described in claim 1, characterized in that... The post-cast strip is formed by casting with expansion concrete.

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