Steel truss and prefabricated panel mixed retaining structure

Abstract

The utility model relates to the field of mixed retaining, and discloses a steel truss and prefabricated panel mixed retaining structure which comprises a truss pile and a prefabricated panel, the prefabricated panel comprises a baffle and a plurality of enclosure panels, the truss pile comprises a built-in section and a cantilever section, the enclosure panels surround the periphery of the built-in section, and the baffle is arranged on the side, close to a slope, of the cantilever section. The construction cost and the construction risk of the large-section anti-slide pile are reduced, and the construction period is shortened.

Description

Technical Field

[0001] The utility model relates to the field of mixed retaining, in particular to a mixed retaining structure of a steel truss and a prefabricated panel. Background Art

[0002] In the emergency rescue project of thick fill landslide, the cost-effective anchor pile system cannot be used due to the lack of effective anchoring area, resulting in large and long pile sections (for example, piles with a section of 2.5m×3.8m and a length of 30m have been used). Unconventional cross-sectional sizes are frequently used, and in most working conditions, only manually excavated piles can be used, which greatly increases the construction risk.

[0003] Emergency rescue projects have tight deadlines and heavy tasks. Traditional projects use bored and cast-in-place anti-slip piles to directly carry out emergency rescue. During construction, there is also the dangerous operation of tying steel cages in the holes, which increases construction risks while reducing risks and involves huge material production costs. Utility Model Content

[0004] The utility model aims to provide a hybrid retaining structure of a steel truss and a prefabricated panel, which reduces the cost and construction risk of large-section anti-sliding piles and shortens the construction period.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a mixed retaining structure of steel trusses and prefabricated panels, including truss piles and prefabricated panels, the prefabricated panels include baffles and a number of enclosure panels, the truss piles include embedded sections and cantilever sections, a number of enclosure panels are surrounded by the embedded sections, and the baffles are arranged on the cantilever section close to the soil side.

[0006] The beneficial effects of this program are:

[0007] 1. By replacing large-section piles with truss piles and utilizing truss structures, the cost of anti-slip piles is greatly reduced; both truss piles and prefabricated panels can be prefabricated in factories and assembled for construction, which greatly reduces on-site construction risks and shortens construction periods. It is suitable for traditional anti-slip pile management in emergency rescue projects.

[0008] 2. Make full use of the material properties of steel, which are very good in tension and compression, and transform the bending properties of the anti-sliding pile into a truss member structure system that is subjected to tension and compression. The triangular structure formed by the chord and web of the truss structure is very stable, which is conducive to reducing the deformation of the overall structure.

[0009] 3. Use several protective panels to surround the embedded section to prevent soil from entering between the trusses after the hole collapses, thereby avoiding bending of the rods and failure of the truss structure.

[0010] Furthermore, the truss pile is a truss structure with a box-section, and the truss pile includes a diagonal web member, and the upper end of the diagonal web member is inclined toward one side of the slope.

[0011] Furthermore, the truss pile is formed by splicing a plurality of truss units.

[0012] Furthermore, the enclosure panels are also arranged on the starting surface and the bottom surface of the embedding section, and the enclosure panels separate the truss piles from the soil.

[0013] Furthermore, the prefabricated panel also includes an inter-pile plate, which is arranged between the truss piles.

[0014] Furthermore, embedded parts are pre-embedded on the baffle and the enclosure panel, and the embedded parts are connected to the truss piles.

[0015] This solution also has the following effects:

[0016] 1. Divide the truss piles into several truss units for easy transportation to the construction site.

[0017] 2. Use the skip pile method to excavate the pile hole. After the truss piles are spliced ​​at the construction site, the embedded parts of the truss piles and prefabricated panels are welded, and then the overall structure is hoisted into the pile hole, which is convenient and fast and saves construction time.

[0018] 3. Protective panels are set around the embedded section, the starting surface and the bottom surface to seal the embedded section, protect the embedded section, prevent soil from entering the truss pile, prevent water seepage, and extend the life of the truss pile. The starting surface of the embedded section is the top surface.

[0019] 4. The upper end of the diagonal brace is tilted toward one side of the slope to optimize the force-bearing structure so as to support the slope. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment;

[0021] Figure 2 A three-dimensional axonometric view of a cantilever section of a truss pile according to an embodiment. DETAILED DESCRIPTION

[0022] The following is further described in detail through specific implementation methods:

[0023] The reference numerals in the drawings of the specification include: truss pile 1, column 11, horizontal web member 12, diagonal web member 13, baffle plate 21, enclosure panel 22, inter-pile plate 23, cross beam 3, slope 4, and soil in front of the pile 5.

[0024] Example

[0025] The embodiment is basically as follows Figure 1-2As shown: a hybrid retaining structure of steel trusses and prefabricated panels, suitable for supporting earth slopes 4, includes prefabricated panels and a number of truss piles 1, the truss piles 1 are formed by welding a number of rectangular tubes, and cross beams 3 are welded between the tops of adjacent truss piles 1, and the cross beams 3 are also formed by rectangular tubes. Structurally, each truss pile 1 is formed by vertically extending and splicing a number of truss units according to the length of the on-site pile hole, and the splicing method is welding. Each truss unit includes four columns 11, a number of horizontal webs 12 and diagonal webs 13, and a number of horizontal webs 12 and diagonal webs 13 are welded between four parallel columns 11 to form a truss structure with a box-section, wherein the upper end of the diagonal web 13 is inclined toward one side of the slope 4. Functionally, as Figure 1 As shown, each truss pile 1 includes an embedded section L1 and a cantilever section L2. The embedded section is embedded in the soil at the bottom of the slope, and the cantilever section is arranged above the embedded section to support the slope 4.

[0026] The prefabricated panel includes a plurality of baffles 21, enclosure panels 22 and pile inter-plates 23. Four enclosure panels 22 surround the embedded section, two enclosure panels 22 are arranged on the starting surface and the bottom surface of the embedded section, and six enclosure panels 22 are respectively arranged on the six surfaces of the embedded section to seal the embedded section. The specific sealing method is: the corner position is welded by a connector and sealed by a sealant, the baffle 21 is arranged on the side of the cantilever section close to the slope 4, and the baffle 21 and the enclosure panels 22 cooperate to separate the truss pile 1 from the soil, such as Figure 2 As shown, the inter-pile plate 23 is arranged between adjacent truss piles 1 and connected to the baffle plate 21. All prefabricated panels are pre-embedded with embedded parts ( Figure 1 , Figure 2 The embedded parts are made of steel, and the connection between the prefabricated panels and other structures is achieved by welding the embedded parts.

[0027] A method for using a mixed retaining structure of steel trusses and prefabricated panels is as follows:

[0028] 1. Divide the truss pile 1 into several truss units that have been derusted for easy transportation to the construction site.

[0029] 2. Construct a lock mouth at the hole mouth of the pile, dig the hole manually, and pour the pile hole retaining wall at the same time. Use the pile skipping method to excavate the pile hole. After the construction of the previous batch of support systems is completed, the next batch of pile holes will be excavated;

[0030] 3. The truss piles 1 are spliced ​​at the construction site, and the truss piles 1 and the embedded parts of the baffle plate 21 and the enclosure panel 22 are welded;

[0031] 4. Hoist the welded structure into the pile hole; hoist and place the "truss pile + prefabricated panel structure system" to prevent collision with the hole wall. After hoisting, check the inclination of the truss pile 1 system. If it does not meet the relevant standards of the "Construction Quality Acceptance Standard for Building Slope Engineering" GB / T51351-2019, adjust it until it meets the requirements. After the first batch of truss piles 1 are completed, the next batch of truss piles 1 will be constructed (repeat steps 2-3), and then weld the beams 3 between the truss piles 1;

[0032] 5. Excavate the soil 5 in front of the piles downwards by reverse operation, and simultaneously install the inter-pile plates 23 between the adjacent truss piles 1, and weld the embedded parts of the inter-pile plates 23 and the baffles 21.

[0033] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A steel truss and prefabricated panel hybrid retaining structure, characterized in that: It includes truss piles and prefabricated panels. The prefabricated panels include baffles and a number of enclosure panels. The truss piles include an embedded section and a cantilever section. A number of enclosure panels surround the embedded section. The baffle is arranged on the cantilever section near the slope.

2. A steel truss and prefabricated panel hybrid retaining structure according to claim 1, characterized in that: The truss pile is a truss structure with a box-section, and the truss pile includes a diagonal web member, and the upper end of the diagonal web member is inclined toward one side of the slope.

3. A steel truss and prefabricated panel hybrid retaining structure according to claim 2, characterized in that: Truss piles are formed by splicing several truss units.

4. A steel truss and prefabricated panel hybrid retaining structure according to claim 3, characterized in that: The retaining panels are also arranged on the starting surface and the bottom surface of the embedded section, and the retaining panels separate the truss piles from the soil.

5. A steel truss and prefabricated panel hybrid retaining structure according to claim 4, characterized in that: The prefabricated panel further includes an inter-pile plate, which is arranged between the truss piles.

6. A steel truss and prefabricated panel hybrid retaining structure according to claim 5, characterized in that: Embedded parts are pre-buried on the baffles and enclosure panels, and the embedded parts are connected to the truss piles.

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