Fence structure of deep foundation pit tower crane standard knot

Abstract

A fence structure of a deep foundation pit tower crane standard knot is erected on the periphery of the tower crane standard knot in a surrounding mode and is characterized by comprising constructional columns rooted on a tower crane foundation, arc-shaped wall bodies and ring beams, the constructional columns are evenly arranged at intervals in the circumferential direction, the arc-shaped wall bodies are built between the adjacent constructional columns and connected with the constructional columns through steel tie bars, and the ring beams are arranged between the constructional columns and the arc-shaped wall bodies. The ring beams are connected with the multiple constructional columns and evenly distributed on the constructional columns at intervals from top to bottom, and the distance between the inner face of the arc-shaped wall body and a tower crane standard knot is 500-600 mm. The strength and lateral pressure resistance of the whole enclosure structure are improved, it is guaranteed that the enclosure structure can bear lateral pressure impact of backfill earthwork and is not damaged, the distance between the arc-shaped wall body and the tower crane standard knot ranges from 500 mm to 600 mm, the requirements for passing of a single person and tool operation space when the tower crane standard knot is dismantled are met, and practicability is high.

Description

Technical Field

[0001] The utility model relates to an enclosure structure for a standard section of a deep foundation pit tower crane, which is used for enclosure protection of the standard section of a deep foundation pit tower crane. Background Art

[0002] In the field of construction engineering, usually after the construction of the structure below zero is completed, in order to expand the effective use area of ​​the site (increase the floor area of ​​the material yard), facilitate the installation of construction elevators and the establishment of safe passages, etc., to facilitate the construction of ground projects, the earth backfilling operation begins. However, the tower crane used for vertical material transportation equipment in the main project construction usually has a tower crane foundation top elevation lower than the main project foundation top elevation or the same as the main project foundation top elevation, and some standard sections of the tower crane are located below zero. When backfilling the earth, if no protective measures are taken for the standard sections of the tower crane, the lateral pressure generated by the backfill soil will cause deformation and other damage to the standard sections, causing great safety hazards, and the standard sections buried in the backfill soil cannot be removed, resulting in material waste. The traditional approach is to build retaining walls, but the retaining wall has low structural strength and poor lateral compressive performance. It is easy to leak or even partially collapse after being subjected to lateral pressure. In order to improve the lateral compressive performance, the prior art has adopted the use of prefabricated components to assemble and form enclosure structures. For example, the application number is 202220006242.1, and the name is "A tower crane foundation enclosure structure", which discloses a prefabricated concrete segment structure, which protects the standard section of the tower crane after assembly. The prefabricated segments used in this technology are arc-shaped, and the accuracy requirements of the arc and tongue of the prefabricated template are high. The accuracy control is more difficult, the deformation error is large, and the installation is difficult; the prefabricated segments are reinforced concrete structures, which are expensive, large in size and inconvenient to transport, and after the backfilling of the earth, the backfill soil side pressure acts, and the connection method is arc and tongue connection, which is not suitable for dismantling. There are also existing technologies that use prefabricated parts made of metal materials to assemble and form enclosure structures, which have poor corrosion resistance, are prone to water seepage, and have high costs and transportation costs, and are not very practical. Utility Model Content

[0003] The utility model provides an enclosure structure for a standard section of a tower crane in a deep foundation pit, which improves the strength and lateral compression resistance of the entire enclosure structure, ensuring that the enclosure structure can withstand the lateral pressure impact of backfill earth without being damaged. The distance between the arc-shaped wall and the standard section of the tower crane is 500-600mm, which meets the space requirements for the passage of a single person and the operation of tools when the standard section of the tower crane is dismantled, and has high practicality.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The enclosure structure of the standard section of the deep foundation pit tower crane is erected around the outer periphery of the standard section of the tower crane, and is characterized by: including structural columns, arc-shaped walls and ring beams rooted in the foundation of the tower crane, the structural columns are evenly spaced along the circumferential direction, the arc-shaped walls are built between adjacent structural columns and connected to the structural columns by tie steel bars, the ring beams connect multiple structural columns and are evenly spaced on the structural columns from top to bottom, and the distance between the inner surface of the arc-shaped wall and the standard section of the tower crane is 500~600mm.

[0006] Preferably, the structural column is a reinforced concrete cast structure with embedded reinforcement in the tower crane foundation, the thickness of the structural column is 350~400mm, the width is 280~330mm, the number of structural columns is six to eight, and the thickness of the arc-shaped wall is equal to the thickness of the structural column.

[0007] Preferably, the tie bars connecting the arc-shaped wall and the structural column are evenly spaced from top to bottom on the structural column, and the tie bars penetrate the arc-shaped wall.

[0008] Preferably, the ring beam is a reinforced concrete structure cast integrally with the structural column, the thickness of the ring beam is equal to the thickness of the structural column, the height is 200±10mm, adjacent ring beams are spaced 2.8~3.1 meters apart, a ring beam is arranged at the top of the structural column, and the lowest ring beam is 2.8~3.1 meters away from the tower foundation.

[0009] Preferably, both the inner and outer surfaces of the arc-shaped wall are coated with a waterproof mortar layer with a thickness of not less than 20 mm.

[0010] The beneficial effects of the utility model are:

[0011] In the enclosure structure of the standard section of a tower crane for a deep foundation pit of the utility model, structural columns are rooted in the foundation of the tower crane, arc-shaped walls are built between adjacent structural columns, and the arc-shaped walls are connected to the structural columns by tie steel bars, thereby improving the self-strength of the arc-shaped walls and the connection strength with the structural columns, and a ring beam connects a plurality of structural columns and divides the arc-shaped walls into multiple layers at even intervals from top to bottom, and the arc-shaped walls are built in a frame surrounded by the ring beam and the structural columns, thereby improving the strength and lateral compressive strength of the entire enclosure structure, ensuring that the enclosure structure can withstand the lateral pressure impact of backfill earth without being damaged, and the distance between the arc-shaped wall and the standard section of the tower crane is 500-600mm, which meets the space requirements for the passage and tool operation of a single person when the standard section of the tower crane is dismantled, and the formed enclosure structure is simple in structure and low in cost, and construction can be carried out after a simple briefing to the construction personnel, and the structure has good strength, can effectively prevent leakage, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a transverse cross-sectional view of the enclosure structure of a standard section of a deep foundation pit tower crane in a specific implementation method.

[0013] Figure 2 It is a longitudinal cross-sectional view of the retaining structure of the standard section of a deep foundation pit tower crane. DETAILED DESCRIPTION

[0014] Combine the following Figure 1~2 The embodiments of the utility model are described in detail.

[0015] The enclosure structure of the standard section of a deep foundation pit tower crane is erected around the outer periphery of the standard section 100 of the tower crane, and is characterized in that it includes structural columns 1, arc-shaped walls 2 and ring beams 3 rooted on the tower crane foundation 200, the structural columns 1 are evenly spaced along the circumferential direction, the arc-shaped walls 2 are built between adjacent structural columns 1 and connected to the structural columns by tie steel bars, the ring beams 3 connect multiple structural columns 1 and are evenly spaced from top to bottom on the structural columns 1, and the distance between the inner surface of the arc-shaped wall 1 and the standard section of the tower crane is 500~600mm.

[0016] In the enclosure structure of the standard section of the deep foundation pit tower crane described above, the structural column 1 is rooted on the tower crane foundation 200, and an arc-shaped wall 2 is built between adjacent structural columns 1, and the arc-shaped wall 2 is connected to the structural column 1 by tie steel bars, thereby improving the self-strength of the arc-shaped wall 2 and the connection strength with the structural column 1, and the ring beam 3 connects multiple structural columns 1 and divides the arc-shaped wall 2 into multiple layers evenly spaced from top to bottom, and the arc-shaped wall 2 is built in the frame enclosed by the ring beam 3 and the structural column 1, thereby improving the strength and lateral compressive resistance of the entire enclosure structure, ensuring that the enclosure structure can withstand the lateral pressure impact of the backfill earth without being damaged, and the distance between the arc-shaped wall 2 and the standard section 100 of the tower crane is 500~600mm to meet the space requirements for the passage and tool operation of a single person when the standard section of the tower crane is dismantled. The formed enclosure structure is simple and of low cost, and construction can be carried out after a simple briefing to the construction personnel. The structural strength is good, leakage can be effectively prevented, and the practicability is high.

[0017] The structural column 1 is a reinforced concrete casting structure with embedded steel bars in the tower crane foundation 1. The thickness D of the structural column 1 is 350-400 mm, the width L is 280-330 mm, the number of the structural columns 1 is six to eight, and the thickness of the arc-shaped wall 2 is equal to the thickness of the structural column. As shown in the attached figure, there are six structural columns 1. The steel bars of the structural columns 1 can be pre-buried during the construction of the tower crane foundation or implanted after the tower crane foundation is formed. The structural columns 1 are cast with reinforced concrete, the construction is simple, and the structure is firm and reliable.

[0018] Among them, the tie steel bars connecting the arc-shaped wall 2 and the structural column 1 are evenly spaced from top to bottom on the structural column, and the tie steel bars penetrate the arc-shaped wall 2. Tie steel bars are set every 500 mm from top to bottom on the arc-shaped wall 2, and the tie steel bars penetrate the arc-shaped wall 2, so as to improve the self-strength of the arc-shaped wall 2, strengthen the connection strength between the arc-shaped wall 2 and the structural column 1, improve the lateral pressure resistance of the arc-shaped wall 2, and effectively prevent the wall 2 from being deformed and damaged under compression when backfilling earthwork.

[0019] The ring beam 3 is a reinforced concrete structure integrally cast with the structural column 1. The thickness of the ring beam 3 is equal to that of the structural column, the height d is 200±10mm, the adjacent ring beams 3 are spaced 2.8~3.1 meters apart, the top of the structural column 1 is provided with a ring beam 3, and the lowest ring beam 3 is 2.8~3.1 meters away from the tower foundation. Figure 2 As shown, the distance h between the lowest ring beam 3 and the tower foundation 200 is 2.8-3.1 meters. The ring beam 3 and the structural column 1 are integrally cast to form a cylindrical frame structure, and the arc-shaped wall 2 is built in the frame. The ring beam 3 divides the arc-shaped wall 2 between adjacent structural columns 1 into multiple layers, reducing the height of a single-sided wall, making the structural strength of the wall higher, and improving the structural strength of the enclosure structure.

[0020] Wherein, both the inner and outer surfaces of the arc-shaped wall 2 are coated with a waterproof mortar layer with a thickness of not less than 20 mm, so as to ensure the waterproof performance of the arc-shaped wall and effectively prevent leakage.

[0021] The above is a complete description of the technical solutions of the embodiments of the utility model in combination with the accompanying drawings. It should be noted that the described embodiments are only part of the embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

Claims

1. The enclosure structure of the standard section of the deep foundation pit tower crane is erected around the outer periphery of the standard section of the tower crane, and is characterized by: It includes structural columns, arc-shaped walls and ring beams rooted on the tower crane foundation. The structural columns are evenly spaced along the circumferential direction. The arc-shaped walls are built between adjacent structural columns and connected to the structural columns by tie steel bars. The ring beam connects multiple structural columns and is evenly spaced on the structural columns from top to bottom. The distance between the inner surface of the arc-shaped wall and the standard section of the tower crane is 500~600mm.

2. The enclosure structure of the standard section of a deep foundation pit tower crane according to claim 1 is characterized by: The structural column is a reinforced concrete casting structure with embedded reinforcement in the tower crane foundation. The thickness of the structural column is 350-400 mm, the width is 280-330 mm, the number of the structural columns is six to eight, and the thickness of the arc-shaped wall is equal to that of the structural column.

3. The enclosure structure of the standard section of a deep foundation pit tower crane according to claim 2 is characterized in that: Tie steel bars connecting the arc-shaped wall and the structural column are evenly spaced from top to bottom on the structural column, and the tie steel bars penetrate the arc-shaped wall.

4. The enclosure structure of the standard section of a deep foundation pit tower crane according to claim 1 is characterized in that: The ring beam is a reinforced concrete structure cast integrally with the structural column. The thickness of the ring beam is equal to that of the structural column, the height is 200±10mm, the adjacent ring beams are spaced 2.8~3.1 meters apart, a ring beam is arranged at the top of the structural column, and the lowest ring beam is 2.8~3.1 meters away from the tower foundation.

5. The enclosure structure of the standard section of a deep foundation pit tower crane according to claim 1 is characterized by: The inner and outer surfaces of the arc-shaped wall are both coated with a waterproof mortar layer with a thickness of not less than 20 mm.

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