Calcium chloride steel structure belt vestibule replacement construction method

Abstract

The invention is suitable for the technical field of construction, and provides a replacement construction method for a calcium chloride steel structure belt vestibule. Comprising the following steps that a newly-built and updated truss is used for supporting a belt conveyor, and the newly-built truss is of an upper inverted structure; the belt conveyor is separated from the original truss of the vestibule, and the load of the belt conveyor is transferred to the updated truss; and after the vestibule component is replaced, repaired and newly built, the belt conveyor support is connected with the newly-built vestibule component, and then the updated truss is installed in a segmented mode. According to the method, the engineering quality is well controlled, the safety and progress are guaranteed, the engineering completely meets the design requirements and the specifications and regulations, the expected goal is achieved, and the safety and quality of high-risk construction of the vestibule are guaranteed; the construction method is clear, construction is orderly and rapid, labor efficiency is high, and construction cost is low. The whole technological process is remarkable in effect in practical application, good in field use effect and full of users.

Description

Technical Field

[0001] The invention relates to the technical field of construction, in particular to a calcium chloride steel structure belt corridor replacement construction method. Background Art

[0002] With the widespread use of steel structure belt corridors in construction projects, the steel structure belt corridors are severely corroded due to long-term service life. However, how to reinforce and replace them to ensure the normal production of blast furnaces has become the key to construction.

[0003] In the past, most construction projects with severely corroded steel structure belt corridors had to be reprocessed and reinstalled after the production was stopped, which often affected the normal production and even required a long time to wait for the blast furnace to stop production before operation, resulting in major safety hazards. In view of the fact that traditional construction technology must be constructed under production suspension conditions, affecting production operations and causing economic losses to enterprises, a calcium chloride steel structure belt corridor replacement construction method is proposed to solve this technical problem. Summary of the invention

[0004] The object of the present invention is to provide a calcium chloride steel structure belt corridor replacement construction method to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A calcium chloride steel structure belt corridor replacement construction method comprises the following steps: New and updated trusses are built to support the belt conveyor, where the new trusses are upper inverted structures; Separate the belt conveyor from the original truss of the corridor and transfer the belt conveyor load to the updated truss; After the corridor components are replaced, repaired, or newly constructed, the belt conveyor bracket will be connected to the newly constructed corridor components, and then the updated trusses will be installed in sections.

[0006] As a further solution of the present invention: a new truss is built to support the belt conveyor, including: Construction of foundation and embedded parts; installation of columns and construction of truss connecting rods.

[0007] As a further solution of the present invention: the foundation and embedded parts construction includes: In light of the actual situation on site, embedded parts are set up by directly planting reinforcement and welding 20mm thick steel plates on the highway, and grouting material is used to fill the bottom of the steel plates to make them dense; a cast-in-place strip foundation is set up in the green belt, and a 20mm thick steel plate is embedded on the top of the foundation.

[0008] As a further solution of the present invention: the column installation includes: The columns are installed by hoisting.

[0009] As a further solution of the present invention: the column is installed by hoisting, including: Drill 400x400 holes at the corresponding positions on the board in the corridor, use a crane to pass the columns through the holes to the preset base steel plate, adjust the columns to ensure verticality, and then weld at the base.

[0010] As a further solution of the present invention: the belt conveyor is separated from the original truss of the corridor, and the load of the belt conveyor is transferred to the newly built truss, including: The belt conveyor support is welded to the newly built truss.

[0011] As a further solution of the present invention: the belt conveyor is separated from the original truss of the corridor, and the load of the belt conveyor is transferred to the newly built truss, including: When separating the belt conveyor bracket from the original truss, first confirm whether the surrounding components are stable. If they are unstable, then reinforce them before proceeding; Replace the main beam of the walkway slab on one side of the corridor and provide temporary support on the other side; this ensures that the corridor is stable and balanced during construction; Replacement of walkway panels.

[0012] As a further solution of the present invention: temporary support spacing is @6m and 200*200 H-shaped steel or 20# channel steel is used to support the main beam position.

[0013] As a further solution of the present invention: the replacement of the walkway plate includes: During the replacement period, thin plates are required for isolation, and a long-handled welding torch is used during the isolation construction.

[0014] As a further solution of the present invention: after the corridor components are replaced, repaired, or newly built, the belt conveyor bracket is connected to the newly built corridor components, and then the new trusses are installed in sections, including: The original corridor flower stands were dismantled in sections.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention can well control the quality of the project, ensure safety and progress, the project fully complies with the design requirements and meets the specifications, achieves the expected goals, and ensures the safety and quality of the high-risk construction of the corridor; the construction method of this method is clear, the construction is orderly and fast, the labor efficiency is high, and the construction cost is low. The whole process has significant effects in practical applications, good on-site use effects, and users are very satisfied. It has been well received by owners and industry technicians and has good practicality and application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a flowchart of a calcium chloride steel structure belt corridor replacement construction method according to an embodiment of the present invention.

[0017] Figure 2 This is a front elevation construction drawing of a belt conveyor frame support frame in a calcium chloride steel structure belt corridor replacement construction method according to an embodiment of the present invention.

[0018] Figure 3 This is a side elevation construction drawing of a belt conveyor frame support frame in a calcium chloride steel structure belt corridor replacement construction method according to an embodiment of the present invention.

[0019] Figure 4 This is a construction drawing of a belt conveyor frame support frame node in a calcium chloride steel structure belt corridor replacement construction method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the past, most of the construction projects with severely corroded steel structure belt corridors had to be reprocessed and remade after production was stopped, which often affected the normal production and even required a long time to wait for the blast furnace to stop production before operation, resulting in major safety hazards. In order to solve this problem, the present invention adopts the severely corroded calcium chloride belt corridor of the sintering machine without stopping the machine to temporarily support and replace the belt conveyor frame, and changes the original corridor truss from the sunken type to the upper inverted structure. The upper belt frame support is first reinforced to ensure production, and then the truss is replaced. The construction method solves the technical difficulties of construction, ensures safety and construction period, and ensures the quality of the project to achieve the purpose of rapid and efficient cost reduction.

[0022] Example 1 See also Figure 1 , a flowchart of a calcium chloride steel structure belt corridor replacement construction method provided in Example 1 of the present invention includes the following steps S1-S3.

[0023] S1. Newly build and update the truss to support the belt conveyor, where the new truss is an upper inverted structure.

[0024] In the embodiment of the present invention, S1, a new truss is constructed to support the belt conveyor, including: Construction of foundation and embedded parts; installation of columns and construction of truss connecting rods.

[0025] In the embodiment of the present invention, the foundation and embedded parts construction includes: In accordance with the actual situation on site, 20mm thick steel plates are directly welded on the road to set embedded parts, and grouting materials are used to fill the bottom of the steel plates; A cast-in-place strip foundation is set up in the green belt, and a 20mm thick steel plate is embedded on the top of the foundation.

[0026] In an embodiment of the present invention, the column installation includes: The columns are installed by hoisting; a 400x400 hole is opened at the corresponding position on the board of the corridor, and the column is passed through the hole to the preset base steel plate by a crane, and the column is adjusted to ensure verticality, and then welded at the base. At the same time, the column is simply fixed to the original corridor to prevent the column from tilting during the operation.

[0027] S2. Separate the belt conveyor from the original truss of the corridor and transfer the belt conveyor load to the updated truss. This ensures that the belt conveyor can operate normally when the corridor truss is replaced, without affecting the normal production needs of the owner.

[0028] In the embodiment of the present invention, the step S2, separating the belt conveyor from the original truss of the corridor and transferring the load of the belt conveyor to the newly built truss, includes: The belt conveyor support is welded to the newly built truss.

[0029] In the embodiment of the present invention, the step S2, separating the belt conveyor from the original truss of the corridor and transferring the load of the belt conveyor to the newly built truss, includes: When separating the belt conveyor bracket from the original truss, first confirm whether the surrounding components are stable. If they are unstable, reinforce them before proceeding.

[0030] Replace the main beam of the walkway slab on one side of the corridor, and provide temporary support on the other side to ensure the stability and balance of the corridor during construction. The support spacing is @6m, and 200*200 H-shaped steel or 20# channel steel is used to support the main beam position.

[0031] The replacement of the walkway plate, among which the walkway plate and the ash receiving plate are only 300~400mm away from the belt, the belt production and transportation, and the construction are very dangerous. During the replacement, thin plates must be used for isolation, and long-handled welding torches must be used during the isolation construction to ensure safety.

[0032] S3. After the corridor components are replaced, repaired, or newly constructed, the belt conveyor bracket will be connected to the updated corridor components, and then the updated trusses will be installed in sections.

[0033] After the replacement, repair and new construction of the corridor components in S3 are completed, the belt conveyor bracket is connected to the newly built corridor components, and then the new trusses are installed in sections, including: The original corridor flower stands were dismantled in sections.

[0034] This method can well control the quality of the project, and the safety and progress are guaranteed. The project fully complies with the design requirements and meets the specifications, achieves the expected goals, and ensures the safety and quality of the high-risk construction of the corridor. This method has clear construction methods, orderly and fast construction, high labor efficiency, and low construction costs. The entire process has significant effects in practical applications, good on-site use effects, and users are very satisfied. It has been well received by owners and industry technicians and has good practicality and application prospects.

[0035] Exemplarily, the present invention has been successfully used in the belt corridor and transfer station closure improvement project of Pangang Vanadium Ironmaking Plant - Pangang Vanadium Ironmaking Plant belt corridor and transfer station closure improvement project - Take-1 belt corridor ensures the normal coke transportation of No. 4 blast furnace. The original planned construction period of the support frame is 30 days, and the actual construction period is 11 days, which is 19 days ahead of schedule. Through the improvement and implementation, a total economic benefit of about 176,700 yuan was generated.

[0036] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0041] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A calcium chloride steel structure belt corridor replacement construction method, characterized in that: The steps include: New and updated trusses are built to support the belt conveyor, where the new trusses are upper inverted structures; Separate the belt conveyor from the original truss of the corridor and transfer the belt conveyor load to the updated truss; After the corridor components are replaced, repaired, or newly constructed, the belt conveyor bracket will be connected to the newly constructed corridor components, and then the updated trusses will be installed in sections.

2. A calcium chloride steel structure belt corridor replacement construction method according to claim 1, characterized in that, New trusses are built to support the belt conveyor, including: Construction of foundation and embedded parts; installation of columns and construction of truss connecting rods.

3. A calcium chloride steel structure belt corridor replacement construction method according to claim 2, characterized in that, The foundation and embedded parts construction includes: Directly plant reinforcement and weld 20mm thick steel plates to set embedded parts, and use grouting material to fill the bottom of the steel plates to make them dense; set up cast-in-place strip foundations in the green belt, and embed 20mm thick steel plates on the top of the foundation.

4. A calcium chloride steel structure belt corridor replacement construction method according to claim 2, characterized in that, The column installation includes: The columns are installed by hoisting.

5. A calcium chloride steel structure belt corridor replacement construction method according to claim 4, characterized in that, The column is installed by hoisting, including: Drill 400x400 holes at the corresponding positions on the board in the corridor, use a crane to pass the columns through the holes to the preset base steel plate, adjust the columns to ensure verticality, and then weld at the base.

6. A calcium chloride steel structure belt corridor replacement construction method according to claim 1, characterized in that, The method of separating the belt conveyor from the original truss of the corridor and transferring the load of the belt conveyor to the newly built truss includes: The belt conveyor support is welded to the newly built truss.

7. A calcium chloride steel structure belt corridor replacement construction method according to claim 1, characterized in that, The method of separating the belt conveyor from the original truss of the corridor and transferring the load of the belt conveyor to the newly built truss includes: When separating the belt conveyor bracket from the original truss, confirm whether the surrounding components are stable. If they are unstable, reinforce them first; Replace the main beam of the walkway slab on one side of the corridor and provide temporary support on the other side; Replace walkway panels.

8. A calcium chloride steel structure belt corridor replacement construction method according to claim 7, characterized in that, The temporary support spacing is 6m and 200*200 H-shaped steel or 20# channel steel is used to support the main beam position.

9. A calcium chloride steel structure belt corridor replacement construction method according to claim 7, characterized in that, The replacement of the walkway plate includes: During the replacement period, thin plates are required for isolation, and a long-handled welding torch is used during the isolation construction.

10. A calcium chloride steel structure belt corridor replacement construction method according to claim 1, characterized in that, After the corridor components are replaced, repaired, or newly constructed, the belt conveyor bracket is connected to the newly constructed corridor components, and then the new trusses are installed in sections, including: The original corridor flower stands were dismantled in sections.

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