Sliding lifting installation structure for super-long rod piece in foundation pit
By setting up support piles, reserved slopes and permanent support in the foundation pit, and using transportation guide rails and simple gantry to achieve overall lifting and moving steel pipe support, the difficulties of traditional lifting and lifting methods on narrow working surfaces are solved, construction efficiency and safety are improved, and costs are reduced.
Patent Information
- Application Number
- CN202422021937.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-08-20
AI Technical Summary
In foundation pit construction, when the working surface is narrow, the span is large, and the site conditions are limited, there is difficulty in the air splicing of steel pipe support in situ lifting, resulting in high risks of high altitude operations, slow progress and increased costs.
A sliding lifting installation structure of ultra-long rod members in the foundation pit is adopted, including supporting piles, reserved slopes and permanent support arranged along the edge of the foundation pit, as well as steel pipe support, support horns, transportation guide rails and simple gantry set on the permanent support. The overall lifting and movement of steel pipe support is achieved through the transportation guide rails and simple gantry.
This structure reduces the risk of steel pipe support splicing in high altitudes, improves construction efficiency, reduces costs, and enhances construction safety.
Smart Images
Figure CN222923759U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of foundation pit slope support construction, and specifically discloses a sliding lifting installation structure for ultra-long members in a foundation pit. Background Technique
[0002] With the increasing development of the construction industry, the form of foundation pit support for buildings is more diverse. For many projects with existing adjacent buildings, the steel pipe internal support form is adopted. When the gap between the underground edge of a construction project and the permanent support is too narrow and long, and steel pipe support construction needs to be carried out in this suspended space, the safety and stability between the underground structure and the internal support of the adjacent building are a major problem. Especially when the working surface is narrow, the span is large, and the site conditions are limited, it will hinder the hoisting.
[0003] Nowadays, in the traditional hoisting method, the steel support is hoisted in-situ in sections and assembled in the air to complete the installation. The disadvantages of this method are that not only the assembly height of the steel pipe support is large, the risk of high-altitude operation is high, and the hoisting progress of each component is slow, but also the construction cost increases due to the large crane tonnage and the large amount of scaffolding materials used. Content of the Utility Model
[0004] The purpose of the utility model is to provide a sliding lifting installation structure for ultra-long members in a foundation pit, and solve the technical problems mentioned in the above background technique.
[0005] To achieve the above purpose, the utility model adopts the following technical scheme:
[0006] An installation structure for sliding and lifting ultra-long members in a foundation pit, comprising retaining piles arranged along the edge of the foundation pit, a reserved slope and a permanent support arranged in sequence away from the inner side of the retaining piles, and steel pipe supports arranged on the reserved slope and the permanent support. The permanent support includes support columns and a top plate arranged at the top of the support columns. A plurality of support brackets are arranged on the permanent support, and the plurality of support brackets are linearly and evenly spaced above the top plate. A transportation guide rail is arranged on the top surface of the support bracket, and the transportation guide rail is laid longitudinally on the top surface of the support bracket. The transportation guide rail includes two vertically superimposed I-beams, and the upper flanges of the two I-beams and one side of the lower flanges of the two I-beams are respectively welded and fixed correspondingly. Two limit steel bars are vertically fixed on the top surface of each support bracket, and the transportation guide rail is limited between the two limit steel bars, and the limit steel bars are welded and fixed to the transportation guide rail. One end of the steel pipe support is placed on the top surface of the transportation guide rail. The steel pipe support includes a plurality of spliced steel pipe short sections, and flange connecting plates are arranged at both ends of the steel pipe short sections. The flange connecting plates of adjacent steel pipe short sections are connected by high-strength bolts. A simple gantry is arranged above the permanent support. The simple gantry includes a U-shaped frame body and two bottom bars arranged at the bottom end of the U-shaped frame body. The U-shaped frame body includes two vertical bars and a cross beam connected to the top ends of the two vertical bars. The two bottom bars are respectively welded and fixed to the bottom ends of the two vertical bars and the two vertical bars. The two bottom bars are both perpendicular to the two vertical bars and the cross beam at the same time.
[0007] Further, the reserved slope is formed by leaving a slope of the original soil, and the outer slope of the reserved slope is sprayed with concrete support. The sprayed concrete support is sprayed with C20 concrete, and the thickness of the concrete support is 80mm.
[0008] Furthermore, the distance between the two limit steel bars is the same as the width of the transportation guide rail.
[0009] Furthermore, the retaining piles are bored cast-in-place piles.
[0010] Furthermore, a lattice column is arranged below the steel pipe support, and the lattice column supports the bottom of the steel pipe support. The cross section of the lattice column is 440*440mm.
[0011] Furthermore, the support brackets are concrete brackets, and the support brackets are cast together with the permanent support.
[0012] Compared with the prior art, the present utility model has the following characteristics and beneficial effects:
[0013] The utility model includes a retaining pile arranged along the edge of a foundation pit, a reserved slope body and a permanent support arranged in sequence away from the inner side of the retaining pile, and a steel pipe support arranged on the permanent support. By arranging a plurality of support brackets on the permanent support and arranging a transportation guide rail on the top surface of the support brackets, one end of the steel pipe support is placed on the top surface of the transportation guide rail, which facilitates driving the steel pipe support to move on the top surface of the transportation guide rail by a pile board machine. By arranging a simple gantry above the permanent support for hoisting the steel pipe support, it is convenient to hoist the whole steel pipe support when needed, making up for the defect that the traditional lifting method is difficult to hoist at the restricted construction operation parts, avoiding the way of splicing the steel pipe support in the air during in-situ hoisting, reducing the safety hazards of high-altitude operations, improving the installation construction efficiency, having the characteristics of safety and applicability, having good popularization and practical value, and generating good economic benefits after extensive popularization and application. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a schematic diagram of the overall structure of the utility model;
[0015] Figure 2 is a schematic diagram of the structure of the contact part between the steel pipe support and the transportation guide rail of the utility model.
[0016] Reference numerals: 1, retaining pile; 2, reserved slope body; 3, permanent support; 4, steel pipe support; 5, support bracket; 6, transportation guide rail; 7, limit steel bar; 8, flange connection plate; 9, simple gantry; 10, lattice column. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] In order to make the technical means, innovative features, achieved purposes and functions of the utility model easy to understand, the utility model is further described below.
[0018] The embodiments described herein are specific specific embodiments of the utility model for explaining the concept of the utility model, and are all explanatory and exemplary, and should not be construed as limiting the embodiments of the utility model and the scope of the utility model. Except for the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the content disclosed in the claims and the specification of this application, and these technical solutions include technical solutions that make any obvious substitutions and modifications to the embodiments described herein.
[0019] The utility model discloses a structure for sliding and lifting the installation of ultra-long members in a foundation pit, as Figure 1 and Figure 2As shown in the figure, it includes a retaining pile 1 arranged along the edge of the foundation pit, a reserved slope body 2 and a permanent support 3 arranged in sequence away from the inner side of the retaining pile 1, and a steel pipe support 4 arranged on the permanent support 3. The retaining pile 1 is a rotary drilled cast-in-place pile. The above-ground permanent part above the retaining pile 1 adopts a pile-slab wall, and the pile-slab wall adopts a permanent concrete retaining wall. The height of the pile-slab wall is the same as the retaining height. The bottom of the pile-slab wall penetrates 200 mm below the unfinished surface. The reserved slope body 2 is arranged closely against the retaining pile 1. The reserved slope body 2 can be used to support and protect the retaining pile 1 while temporarily placing one end of the steel pipe support 4 away from the permanent support 3. The reserved slope body 2 is formed by leaving a slope with the original soil. The outer slope of the reserved slope body 2 is supported by shotcrete, and the slope ratio is 1:0.With a slope of 75 degrees, the shotcrete support uses C20 concrete for spraying, and the thickness of the shotcrete support is 80 mm; the permanent support 3 includes support columns and a roof slab provided at the top of the support columns. There are multiple support brackets 5 provided on the permanent support 3. The multiple support brackets 5 are arranged in a straight line and evenly spaced above the roof slab. The support brackets 5 are used to support the steel pipe support 4. The support brackets 5 are concrete brackets and are cast together with the roof slab of the permanent support 3. The cross-section of the support bracket 5 is a trapezoidal structure. A transportation guide rail 6 is provided on the top surface of the support bracket 5. The transportation guide rail 6 is laid longitudinally on the top surfaces of multiple support brackets 5. The transportation guide rail 6 is a double-rolled I-beam guide rail, including two I-beams stacked vertically. The upper flanges of the two I-beams and the side edges of the lower flanges of the two I-beams are respectively welded and fixed correspondingly. Two limit steel bars 7 are vertically fixed on the top surface of each support bracket 5. The distance between the two limit steel bars 7 is the same as the width of the transportation guide rail 6. The transportation guide rail 6 is limited between the two limit steel bars 7. The inner side of the limit steel bar 7 is welded and fixed to the transportation guide rail 6. The top surface of the transportation guide rail 6 is flush with the top surface of the reserved slope body 2. One end of the steel pipe support 4 is placed on the top surface of the transportation guide rail 6. A lattice column 10 is provided below the steel pipe support 4. The lattice column 10 supports the bottom of the steel pipe support 4. The cross-section of the lattice column 10 is 440*440 mm. The steel pipe support 4 includes multiple spliced steel pipe short sections. Flange connection plates 8 are provided at both ends of the steel pipe short sections. The flange connection plates 8 of adjacent steel pipe short sections are connected by 16 high-strength bolts with a diameter of 24 mm and a length of 90 mm; there is a pile-sheet machine between the retaining pile 1 and the permanent support 3. A steel wire rope is provided on the steel pipe support 4. The clamp of the pile-sheet machine pulls the steel pipe support 4 to move on the top surface of the transportation guide rail 6 through the steel wire rope. A simple gantry 9 for hoisting the steel pipe support 4 is provided above the permanent support 3. The simple gantry 9 can move on the permanent support 3. The height and width of the simple gantry 9 are 4300 mm and 1500 mm respectively. The simple gantry 9 includes a U-shaped frame body and two bottom bars provided at the bottom end of the U-shaped frame body. The U-shaped frame body includes two vertical bars and a cross beam connected to the top ends of the two vertical bars. The two bottom bars are respectively welded and fixed to the bottom ends of the two vertical bars and the two vertical bars. Both bottom bars are perpendicular to both the vertical bars and the cross beam at the same time. The vertical bars, the cross beam and the bottom bars are all I-beams with a specification of 300*300. A hoisting component is provided at the bottom of the cross beam to hoist the steel pipe support 4 and remove the transportation guide rail 6 when needed.
[0020] During construction, set out the installation plane position and elevation of the steel pipe support 4 according to the design drawings; level and tamp the ground beside the foundation pit, and use the method of steel pipe enclosure to set up a temporary storage yard for the steel pipe support 4. Plant the limit steel bars 7 on the support corbel 5 and weld the transportation guide rail 6. The spliced I-beams are fully welded butt joints, which are used to place the steel pipe support 4 on the transportation guide rail 6 for rolling transfer to form a track. Segmentally assemble the steel pipe support 4 in the temporary storage yard. The flange connecting plates 8 between the short steel pipe sections are connected by 16 high-strength bolts with a diameter of 24 mm and a length of 90 mm; one end of the steel pipe support 4 is placed on the transportation guide rail 6, and a steel wire rope is wound around the other end of the steel pipe support 4. Use the pile board machine fixture to drag the steel wire rope upward for traction, so that the steel pipe support 4 rotates and rolls forward. During traction, manually observe the angle between the steel pipe support 4 and the transportation guide rail 6 to ensure that the speeds at both ends are the same. After transportation and positioning, block it with wooden squares to prevent rolling; use a simple gantry 9 to lift the steel pipe support 4, remove the transportation guide rail 6, and make it fall on the support corbel 5.
[0021] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be construed as limiting the claimed invention.
[0022] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A sliding lifting installation structure for an extra-long rod in a foundation pit, characterized in that: It includes retaining piles (1) arranged along the edge of the foundation pit, a reserved slope body (2) and a permanent support (3) arranged in sequence away from the inner side of the retaining piles (1), and a steel pipe support (4) arranged on the permanent support (3). The permanent support (3) includes support columns and a top plate arranged at the top of the support columns. A plurality of support brackets (5) are arranged on the permanent support (3), and the plurality of support brackets (5) are linearly and evenly spaced above the top plate. A transportation guide rail (6) is arranged on the top surface of the support bracket (5), and the transportation guide rail (6) is laid longitudinally on the top surface of the support bracket (5). The transportation guide rail (6) includes two vertically stacked I-beams, and the upper flanges of the two I-beams and one side edges of the lower flanges of the two I-beams are respectively welded and fixed correspondingly. Two limit steel bars (7) are vertically and fixedly arranged on the top surface of each support bracket (5), and the transportation guide rail (6) is limited between the two limit steel bars (7), and the limit steel bars (7) are welded and fixed to the transportation guide rail (6). One end of the steel pipe support (4) is placed on the top surface of the transportation guide rail (6). The steel pipe support (4) includes a plurality of spliced steel pipe short sections, and flange connection plates (8) are arranged at both ends of the steel pipe short sections. The flange connection plates (8) of adjacent steel pipe short sections are connected by high-strength bolts. A simple gantry (9) is arranged above the permanent support (3). The simple gantry (9) includes a U-shaped frame body and two bottom bars arranged at the bottom end of the U-shaped frame body. The U-shaped frame body includes two vertical bars and a cross beam connected to the tops of the two vertical bars. The two bottom bars are respectively welded and fixed to the bottom ends of the two vertical bars and are perpendicular to both the two vertical bars and the cross beam.
2. The sliding lifting installation structure of an extra-long rod in a foundation pit according to claim 1 is characterized in that: The reserved slope body (2) is formed by leaving a slope of the original soil, and the outer slope of the reserved slope body (2) is sprayed with concrete support, and the thickness of the concrete support is 80 mm.
3. The sliding lifting installation structure of an extra-long rod in a foundation pit according to claim 1 is characterized in that: The distance between the two limit steel bars (7) is the same as the width of the transportation guide rail (6).
4. The sliding lifting installation structure of an extra-long rod in a foundation pit according to claim 1 is characterized in that: The retaining piles (1) are rotary drilled cast-in-place piles.
5. The sliding lifting installation structure of an extra-long rod in a foundation pit according to claim 1 is characterized in that: A lattice column (10) is arranged below the steel pipe support (4), and the lattice column (10) supports the bottom of the steel pipe support (4), and the cross section of the lattice column (10) is 440*440 mm.
6. The sliding lifting installation structure of an extra-long rod in a foundation pit according to any one of claims 1 to 5, characterized in that: The support brackets (5) are concrete brackets, and the support brackets (5) are cast together with the permanent support (3).