WO2021000443A1

WO2021000443A1 - Hosting method for heavy apparatus close to unsealed building

Info

Publication number: WO2021000443A1
Application number: PCT/CN2019/110663
Authority: WO
Inventors: 孙连勇; 李虎; 李敬; 温法庆; 黄永亮; 衣军勇; 赵曰琦; 乔南
Original assignee: 济南轨道交通集团有限公司; 中铁十八局集团有限公司
Priority date: 2019-07-01
Filing date: 2019-10-11
Publication date: 2021-01-07
Also published as: AU2019453220A1; CN110329925B; CN110329925A; AU2019453220B2

Abstract

Disclosed is a hosting method for a heavy apparatus close to an unsealed building, the method comprising the following steps: providing a first-stage hoisting apparatus at the top of the unsealed building, and providing a temporary placing platform (4) on one side of the first-stage hoisting apparatus of the unsealed building; providing backfill soil (2) on one side of the unsealed building, providing a second-stage hoisting apparatus at the top of the backfill soil (2), and arranging the temporary placing platform (4) between the first-stage hoisting apparatus and the second-stage hoisting apparatus; and using the first-stage hoisting apparatus to hoist the heavy apparatus to the temporary placing platform (4) from the interior of the unsealed building, and then hoisting the heavy apparatus needing to be hoisted to the outside of the unsealed building from the temporary placing platform (4) by means of the second-stage hoisting apparatus. The method solves the problems in the prior art that the hoisting of a heavy apparatus close to a building has high equipment requirements and many requirements, such that the hoisting of the heavy apparatus is facilitated, and the negative influence on the unsealed building is reduced.

Description

Method for hoisting heavy equipment of adjacent unclosed buildings

Technical field

The invention relates to the technical field of equipment hoisting, in particular to a method for hoisting heavy equipment adjacent to an unclosed building.

Background technique

The hoisting of heavy equipment is mostly carried out after the main structure of the building is completed. It is rarely used to first hoist the heavy equipment and then construct the main structure of the building. Underground buildings such as subway stations are hoisted in the foundation pit before they are closed. Heavy equipment such as a shield machine has a relatively large mass. However, in the prior art, for the construction environment where there is no foundation structure around the unclosed building (multi-level grading to excavate deep foundation pits), large lifting equipment is mainly used For hoisting, the requirements for lifting tonnage of lifting equipment are relatively high. However, the surrounding environment of most subway stations is complicated, and sufficient space cannot be increased for larger lifting equipment, and higher lifting equipment rental costs It is also relatively high. In urban environments, there are also situations where it cannot be rented. Such a construction environment brings greater difficulties to hoisting, and the hoisting radius of the lifting equipment is limited, and it is not a mechanism that can extend indefinitely. , It is further impossible to directly hoist the equipment from the deeper underground buildings.

In addition, the hoisting of heavy equipment must not only ensure the safety of the main structure of the building that does not form a closed whole, but also ensure that the foundation bearing capacity of the crane in the foundation pit meets the requirements of hoisting safety. At the same time, it is also necessary to consider the load of the crane in the foundation pit to form a closed whole. Adverse effects of buildings. When heavy equipment is hoisted in the foundation pit of a nearby building that does not form a closed whole, the crane load in the foundation pit generates lateral pressure on the ground. If the lateral pressure on the ground is too large, it will seriously affect the safety of the building that does not form a closed whole, and even cause Bring catastrophic consequences.

Summary of the invention

In order to overcome the shortcomings of the prior art, the present invention provides a method for hoisting heavy equipment adjacent to unclosed buildings, which can realize the hoisting of heavy equipment step by step. The hoisting is reliable and has little impact on unclosed buildings, and the impact on unclosed buildings is reduced accordingly. Equipment requirements.

The specific scheme of a heavy equipment hoisting method for nearby unclosed buildings is as follows:

A method for hoisting heavy equipment for nearby unclosed buildings, including:

Install the first-level lifting equipment on the top of the unenclosed building, and set up a temporary platform on the side of the first-level lifting device on the top of the unenclosed building;

Set up the backfilled soil on the side of the unclosed building, set up the second-level lifting equipment on the top of the backfilled soil, and set the temporary platform between the first-level lifting equipment and the second-level lifting equipment;

The first-level lifting equipment never closes the inside of the building to hoist heavy equipment to the temporary platform, and then use the second-level lifting equipment to hoist the heavy equipment from the temporary platform to the outside of the building.

The above-mentioned hoisting method can be used for hoisting heavy equipment in buildings that are not completely enclosed (partially closed and partly unclosed). The first-level lifting equipment is located on the top of the unenclosed building and will The heavy equipment is hoisted to the temporary platform, and then hoisted by the second-level hoisting equipment. This eliminates the need to rely on only a larger hoisting equipment for hoisting, which reduces the tonnage requirements for the hoisting equipment. The setting facilitates the entry and exit of the lifting equipment, and correspondingly reduces the lateral pressure of the lifting equipment on the building.

Further, in order to reduce the adverse effect of lifting loads on unenclosed buildings, the rated lifting loads of the first-level lifting equipment and the second-level lifting equipment are the same or similar, and both meet the lifting safety requirements, which The elevation of the station area is different.

Further, the first-level lifting equipment is a crawler crane. The two crawlers of the crawler crane are located at the top of the middle of the two end wells of the unclosed building, and the center distance of the crawlers is consistent with the center distance of the longitudinal beams at the top of the middle of the end well In this way, a certain space is provided for the temporary storage platform, and it is also convenient for the first-level lifting equipment to be hoisted. The crawler crane can be assembled and is convenient for installation on the top of the building.

Further, the top of the unenclosed building is supported by a steel box to support the first-level lifting equipment. The arrangement of the steel box can buffer and evenly distribute the stress generated by the first-level lifting equipment on the top of the building.

Further, the backfilled soil body is vertically provided with a number of steel pipe lattice column structures. Through the arrangement of the steel pipe lattice column structure, they are used as vertical force transmission members to reduce the stress of the second-level lifting equipment on the backfilled soil. , The steel pipe lattice column is transmitted to the rock layer under the foundation pit, thus effectively avoiding the lateral pressure generated by the lifting equipment on the building structure during the hoisting process.

Further, each of the steel tube lattice column structure includes at least one steel tube, the steel tube is filled with concrete, the bottom of the steel tube lattice column structure is provided with a first steel plate, the top of the steel tube lattice column structure is provided with a second steel plate, and each The two adjacent steel pipes in the steel-tube lattice column structure are connected by connecting pieces. There are multiple rows of connecting pieces between the two adjacent steel pipes. The steel pipes are filled with concrete, and the adjacent steel pipes in the steel pipe lattice column structure pass through sleeves. The valve grouting pipe injects cement slurry, which is beneficial to improve the rigidity of the steel pipe lattice column structure and ensure the reliability of vertical force transmission.

Further, the steps of setting backfill soil on the side of the unclosed building are as follows:

Vertically install steel pipe lattice column structure steel pipes on the bottom surface of the foundation pit, and the interval between adjacent steel pipe lattice column structures shall be set according to the set distance;

Set a row of steel sheet piles on both sides (left and right sides) of the side walls of the unclosed building in the foundation pit, and set the interval between the two rows of steel sheet piles according to the set distance;

The two rows of steel sheet piles are connected by setting steel wire ropes, and the steel wires are arranged in layers. During the layered arrangement of the steel wire ropes, soil is gradually backfilled between the two rows of steel sheet piles;

When the soil is backfilled to the same elevation on the top of the steel pipe, a second steel plate is installed on the top of the steel pipe, expanded steel mesh is laid on the top of the second steel plate and the backfilled soil, and a concrete reinforcement layer is poured, while concrete is poured into the steel pipe of the steel pipe lattice column.

Further, the method for setting the steel wire rope is as follows:

Place the I-beam on the outer side of a row of steel sheet piles, the steel wire rope will go around the end of the I-beam and fasten it with a buckle.

After the wire rope is tightened by the rope tightener, the other end of the wire rope is fixed with a buckle.

Further, after the lifting construction is completed, the steel wire ropes are cut to recover the steel sheet piles on both sides of the backfill soil.

Further, the height of the backfilled soil is to be the minimum value under the premise of meeting the requirements of the second-level lifting equipment, so as to reduce the amount of backfilled soil, reduce the construction cost and minimize the side pressure zone of the backfilled soil. The coming series has adverse effects.

Compared with the prior art, the beneficial effects of the present invention are:

1) The present invention uses two-stage lifting equipment to hoist heavy equipment in unenclosed buildings, which reduces the requirements for lifting equipment and correspondingly reduces the strength requirements of the lifting equipment on the foundation structure. Through step-by-step transport, The lateral pressure of the lifting equipment on the building is also correspondingly reduced to avoid adverse effects on the building.

2) The present invention not only facilitates the entry and departure of two-level lifting equipment through the setting of backfilling soil, especially the entry and departure of two-level lifting equipment. The second-level lifting equipment can not only facilitate heavy equipment The hoisting is also convenient for hoisting the first-level lifting equipment through the second-level lifting equipment.

3) In the present invention, steel sheet piles are set on both sides of the backfilled soil and tightened by steel wire ropes, which can act as a retaining wall for the backfilled soil and improve the stability of the backfilled soil as the foundation of the second-level lifting equipment Strong, can avoid the lateral pressure of the hoisting load on the building, and ensure the safety of unclosed buildings.

4) The present invention can transmit the lifting load to the supporting rock layer at the bottom of the foundation pit by installing steel sheet piles in the backfill soil body, thereby further avoiding the lateral pressure of the lifting load on the building and improving the vertical stability of the foundation structure.

Description of the drawings

The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention.

Figure 1 A schematic plan view of the main structure of the station in the embodiment of the present invention;

Figure 2 is a cross-sectional view of the main structure of the station in the embodiment of the present invention;

Figure 3 is a schematic longitudinal view of the main structure of the station in the embodiment of the present invention;

Figure 4 is a schematic cross-sectional view of the backfilled soil in the embodiment of the present invention;

Fig. 5 is a schematic diagram of the occupation of two cranes for hoisting shield components in the embodiment of the present invention;

Figure 6 is a schematic diagram of the layout of monitoring points in the embodiment of the present invention;

Fig. 7 is a schematic diagram of the horizontal plane of foundation treatment of the crane in the embodiment of the present invention;

Figure 8 is a schematic cross-sectional view of the connection between the steel sheet pile and the steel wire rope in the embodiment of the present invention;

Figure 9 is a horizontal schematic diagram of the connection between the steel sheet pile and the steel wire rope in the embodiment of the present invention;

Figure 10 is a schematic plan view of the steel pipe lattice column structure in the embodiment of the present invention;

Figure 11 is a schematic side view of the steel pipe lattice column structure in the embodiment of the present invention;

Figure 12 is a top view of the car crane in the embodiment of the present invention;

In the picture: 1. Concrete reinforcement layer, 2. Backfill soil, 3. Truck crane, 4. Temporary platform, 5. Crawler crane, 6. Main structure of the station, 7. Steel sheet pile, 8. Steel pipe, 9. Grouting Pipe, 10. Wire rope, 11. Foam brick, 12. Back pressure earthwork, 13. First I-beam, 14. Concrete, 15. Second I-beam, 16. First steel plate, 17. Second steel plate, 18 .Square box, 19. Shield lifting hole, 20. Steel box, 21. Outrigger.

Detailed ways

It should be pointed out that the following detailed descriptions are all illustrative and are intended to provide further description of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs.

It should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and/or "including" are used in this specification, they indicate There are features, steps, operations, devices, components, and/or combinations thereof.

As described in the background art, there are deficiencies in the prior art. In order to solve the above technical problems, the present invention proposes a method for hoisting heavy equipment in nearby unenclosed buildings. The following describes the present invention with reference to the accompanying drawings Elaborate.

In a typical implementation of the present invention, as shown in FIG. 5, a method for hoisting heavy equipment in a nearby unclosed building includes:

1) Install the first-level lifting equipment on the top of the unenclosed building, and set up a temporary platform on the side of the first-level lifting device of the unenclosed building;

2) Set up the backfilled soil 2 on the side of the unclosed building, set the second-level lifting equipment on the top of the backfilled soil 2, and set the temporary platform 4 between the first-level lifting equipment and the second-level lifting equipment In between, the height of the backfilled soil 2 shall be taken to the minimum under the premise of meeting the requirements of the second-level lifting equipment, in order to reduce the amount of backfilled soil, reduce the construction cost and minimize the side pressure of the backfilled soil. Series adverse effects.

3) The first-level lifting equipment hoists the heavy equipment from the unclosed building to the temporary platform 4, and then the second-level lifting equipment lifts the lifting equipment from the temporary platform to the outside of the building.

This hoisting method can be applied to the construction where the main subway station is not completely enclosed. As shown in Figure 1, the maximum mass of a shield machine for a rail transit project is 130t for the front shield and 120t for the middle shield. Hoisting is required. The main structure of the receiving end is only completed for about 30m without forming a closed overall structure. The depth of the foundation pit is 20m. The surrounding side of the main structure of the station is a foundation pit, and there is no building or foundation structure to support.

In order to reduce the negative impact of lifting loads on unenclosed buildings, the rated lifting loads of the first-level lifting equipment and the second-level lifting equipment are the same or similar, and both meet the lifting safety requirements, the elevation of the station area different.

In order to ensure that the lifting load of the first-level lifting equipment is transmitted in a uniformly distributed load, the first-level lifting equipment located on the top of the unclosed station uses a crawler crane, and the two crawlers of the crawler crane are located at the two ends of the unclosed building At the top of the well, the track center distance is consistent with the center distance of the longitudinal beams at the top of the end well. This provides a certain space for the temporary storage platform and facilitates the hoisting of the first-level lifting equipment. The crawler crane can be assembled and is convenient for The installation on the top of the building avoids the drawback that the complete lifting equipment cannot reach the station area in a self-propelled manner.

Further, the top of the unenclosed building is supported by a steel box to support the first-level lifting equipment, and the arrangement of the steel box can buffer and evenly distribute the stress generated by the first-level lifting equipment on the top of the building.

In this embodiment, the second-level lifting equipment is a self-propelled wheeled crane, preferably a 500t truck crane, which not only facilitates the entry of the truck crane and its required lifting accessories, but also facilitates the assembly of the crawler crane; there are 4 truck cranes The legs 21 and the four legs 21 are all supported by the square box 18.

The advantage of the preferred 500 truck crane is that the four outriggers 21 of the truck crane are transmitted in a concentrated load pattern, which facilitates the setting of the force transmission structure and the avoidance of lateral pressure generated by the hoisting load.

The first-level lifting equipment is preferably a 350t crawler crane 5. The two crawlers of the crawler crane 5 are located on the top of the middle of the two end wells of the unclosed building. The center distance of the crawler is consistent with the center distance of the longitudinal beams on the top of the station. The platform 4 is arranged close to the second-level lifting equipment, so as to provide a certain space for the temporary storage platform and also facilitate the hoisting of the first-level lifting equipment. The crawler crane 5 can be assembled and installed on the top of the building.

The top of the unclosed building is supported by a steel box to support the first-level lifting equipment. The installation of the steel box can cushion the stress generated by the first-level lifting equipment on the top of the building. The steel box 20 is also a square box. It is located above the longitudinal beams of the main station structure 6 as shown in FIG. 5.

Before setting up the first-level lifting equipment, the following steps are required:

1-1) Clean up the second-level lifting equipment station area and surrounding space, confirm the height to be backfilled, the excavated slope and the back pressure range of the slope, and confirm the amount of earthwork;

1-2) According to the second-level hoisting equipment's rotation radius and station space location requirements determined according to the shield hoisting plan, combined with the second-level hoisting equipment's overall dimensions and the plane size of the outriggers, four outriggers are determined According to the size of the square box cushioned by the outriggers, the plane center distance of the 500t truck crane can be accurately determined.

1-3) Adjust the existing foundation pit platform, as shown in Figure 4, adjust the undisturbed ground and the first grade slope platform, excavate the soil, so that the reconstructed road and the backfill area are connected, which is convenient for cranes When driving in or out, the car crane 3 is set at the backfill area in FIG. 4.

There are several vertical steel pipe lattice column structures in the backfill soil 2. The steel pipe lattice column structure is used as a vertical force transmission member to reduce the stress of the second-level lifting equipment on the backfill soil through the steel pipe The lattice column structure is transferred to the rock below the foundation pit, thereby effectively avoiding the lateral pressure generated by the lifting equipment on the building structure during the hoisting process.

Each of the steel tube lattice column structure includes at least one steel tube 8, filled with concrete 14, the bottom of the steel tube lattice column structure is provided with a first steel plate 16, and the top of the steel tube lattice column structure is provided with a second steel plate 17, and The two adjacent steel pipes 8 in each steel pipe lattice column structure are connected by a connecting piece, and the connecting piece is the second I-beam 15, as shown in Figure 10, there are multiple rows between two adjacent steel pipes 8 The connecting piece, the steel pipe 8 is filled with concrete, and the cement slurry is injected between the adjacent steel pipes in the steel pipe lattice column structure through the sleeve valve grouting pipe, which is beneficial to improve the strong rigidity of the steel pipe lattice column structure and ensure the reliability of vertical force transmission. The steps for setting backfill soil on the side of the unclosed building are as follows:

2-1) According to the determined station space range of the 500t truck crane 3, delineate the boundary of the foundation that needs to be reinforced, that is, set up on both sides of the side wall of the unclosed building in the foundation pit (ie, both sides in the longitudinal direction of the foundation pit) One row of steel sheet piles 7 and two rows of steel sheet piles 7 are arranged at a set distance, and the back-pressure earth 12 is appropriately backfilled on the outside of the steel sheet piles 7 near the side walls of the foundation pit, as shown in Figure 7, to strengthen the outer stability of the steel sheet piles. The backfill soil 4 on the inner side of the steel sheet pile 7 is reasonably piled with earthwork;

2-2) Set sand bags at a position not less than 2m away from the side wall of the main structure 6 of the station to avoid the adverse effects of the steel sheet pile installation on the station structure. The earthwork is backfilled between the steel sheet pile and the side wall of the main structure of the station. The side wall of the main body of the station shall be water-proofed according to the requirements of the station structure (it is the existing technology and will not be repeated), and the foam brick 11 shall be laid and the earthwork shall be backfilled;

2-3) A number of first steel plates 16 are set on the bottom of the foundation pit. The size of the first steel plate 16 is 1000×1000×20mm. Three steel pipes 8 of steel pipe lattice column structure are welded on the surface of the first steel plate 16, adjacent steel pipe grids The column structure interval is set according to the set distance;

2-4) The adjacent steel pipe 8 in each steel sheet pile structure is welded with 20# I-steel to complete the steel pipe lattice column. A φ50 sleeve valve tube is arranged outside each φ609 steel pipe 8 and the center of the 3 steel pipes A grouting pipe 9 (φ50 sleeve valve pipe) is arranged at the position. The sleeve valve pipe 9 is reliably fixed and protected to ensure that the sleeve valve pipe is not damaged when the soil is backfilled, and confirm that the center position of the steel pipe lattice column is consistent with the center size The uniformity of the plane center size of the fully extended plane of the 500t truck crane leg;

2-5) Backfill the soil in layers according to the design requirements, compact according to the design requirements and check the degree of compaction. During the layered setting of the backfill soil, the two rows of steel sheet piles are connected by a wire rope 10, and the wire rope 10 points Layer settings, as shown in Figure 8 and Figure 9;

2-6) The backfilled soil body 2 needs to be rolled after layering. The steel pipe lattice column needs to be prevented from being hit during the soil rolling process. At the same time, the displacement of the sandbags near the main structure of the station shall be monitored. According to the 500t truck crane The position of the station and the force of the hoisting load should be lightly pressed at 6 places close to the main structure of the station to ensure that the main structure of the station 6 is not affected by the side pressure of the backfilled soil; the inner 1m range of the steel sheet piles on both sides should be rolled according to the design requirements. Pressure

2-7) When the soil is backfilled to the top of the steel pipe 8, a second steel plate 17 is installed on the top of the steel pipe. As shown in Figure 11, the size of the second steel plate 17 is 1000×1000×20mm, and the second steel plate 17 has a φ200 concrete pouring hole. Lay steel mesh on the second steel plate and the upper part of the backfill soil, and pour a 40cm concrete reinforcement layer. At the same time, fill the steel pipe of the steel pipe lattice column with concrete and vibrate as required.

It should be noted that the steel sheet pile 7 includes a number of Lassen plates interlocked with each other. The cross-section of the Lassen plates is U-shaped. The interlocked Lassen plates are beneficial to improve the bending rigidity of the steel sheet pile 7. Columns connect the Larsen boards on both sides.

It should be noted that the second steel plate 17 is welded to the steel pipe 8, and the sizes of the first steel plate 16 and the second steel plate 17 are both larger than the size of the steel pipe 8 in the corresponding steel pipe lattice column structure. The steel pipe lattice column structure at each location includes three steel pipes 8, which are arranged at three points of an equilateral triangle. The three steel pipes 8 are arranged in an equilateral triangle with a center distance of 1.5m. The steel pipe lattice column structure includes at least four places. The four steel pipe lattice column structures form four rectangular points to be arranged, so that they correspond to the four legs of the lifting equipment such as the car crane 3, which can effectively connect the car crane legs to the foundation. The stress is transferred downward, and the lateral force generated by the lifting equipment is dispersed and transmitted to the rock formation at the bottom of the foundation pit.

The settlement is monitored in real time during the whole process of hoisting. It is mainly arranged on both sides of the truck crane 3, the two sides of the backfill earthwork 12 and the top of the building, so that the settlement of the main structure 6 of the station can be monitored. Horizontal and horizontal displacement are monitored; Figure 6 shows the schematic diagram of the monitoring point layout. The initial value of the monitoring point is obtained before hoisting, and real-time monitoring is performed during the hoisting process to ensure the safety of hoisting.

After the concrete reinforcement layer 1 is poured, it is maintained according to the technical requirements. When the strength is not less than 50% of the design requirements, static pressure grouting is performed through the embedded sleeve grouting valve pipe to improve the compactness of the soil between the lattice steel pipe lattice columns The grouting pressure should not be higher than 4bar.

After the concrete reinforcement layer 1 reaches the design strength, the shield equipment hoisting starts. The 500t truck crane enters the site according to the requirements of the station, installs the counterweight, checks the spreaders and locks, and completes the acceptance work. According to the requirements of the design plan, a 350t crawler crane enters the site, and a 500t truck crane will lift it to the top of the station according to its parts for assembly, installation of counterweights, inspection of spreaders and locks, and completion of the acceptance work. Start the hoisting operation according to the requirements of the hoisting plan. The 350t crawler crane 5 will hoist and turn over the shield machine parts from the shield hoisting hole 19, and place it on the temporary platform. The top of the station is hoisted, the main boom of the crane is rotated, and the shield components are placed on the transfer flatbed to complete the hoisting operation. Repeat the above steps to complete all lifting operations.

Among them, the setting method of the wire rope 10 is as follows:

2-5-1) Place the first I-beam 13 on the outside of a row of steel sheet piles. The steel wire rope 10 is wound around the I-beam and fixed with buckles. The steel wire rope 10 passes through the steel sheet pile 7 to the outside of another row of steel sheet piles. Word steel

2-5-2) After the wire rope 10 is tightened by the rope tightener, the other end of the wire rope is fixed with a buckle.

In addition, it should be noted that after the lifting operation is completed, the wire rope is cut, and the steel sheet piles on both sides of the soil are backfilled for recovery.

The hoisting method provided in this embodiment can be used for hoisting heavy equipment in a building that is not completely enclosed. The first-level lifting equipment hoists the heavy equipment to the temporary platform from the inside of the unclosed building, and then the second-level The lifting equipment is hoisted, so there is no need to rely only on a larger lifting equipment for lifting, which reduces the tonnage requirements of the lifting equipment. The setting of backfill soil facilitates the entry and departure of the lifting equipment. The arrangement of the column structure transmits the hoisting load of the second hoisting equipment to the rock layer at the bottom of the foundation pit, avoiding the adverse effects of the hoisting equipment and the hoisting load on the building's lateral pressure.

The foregoing descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc., made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

A method for hoisting heavy equipment for nearby unclosed buildings, which is characterized in that it comprises:

Install the first-level lifting equipment on the top of the unenclosed building, and set up a temporary platform on the side of the first-level lifting device on the top of the unenclosed building;

Set up the backfilled soil on the side of the unclosed building, set the second-level lifting equipment on the top of the backfilled soil, and set the temporary platform between the first-level lifting equipment and the second-level lifting equipment;

The first-level lifting equipment never closes the inside of the building to hoist heavy equipment to the temporary platform, and then use the second-level lifting equipment to hoist the heavy equipment from the temporary platform to the outside of the building.
The method for hoisting heavy equipment near an unenclosed building according to claim 1, wherein the rated lifting loads of the first-level lifting equipment and the second-level lifting equipment are the same or similar, And they all meet the lifting safety requirements, and the elevation of the station area is different.
The method for hoisting heavy equipment adjacent to an unclosed building according to claim 1, wherein the first-level lifting equipment is a crawler crane, and two crawlers of the crawler crane are located at two ends of the unclosed building. The top of the head in the middle of the well.
The method for hoisting heavy equipment adjacent to an unclosed building according to claim 1, wherein the top of the unclosed building is supported by a steel box to support the first-level lifting equipment.
The method for hoisting heavy equipment near an unclosed building according to claim 1, wherein a plurality of steel pipe lattice column structures are vertically arranged in the backfilled soil body.
The method for hoisting heavy equipment for nearby unclosed buildings according to claim 5, wherein each of the steel pipe lattice column structure includes at least one steel pipe, the steel pipe is filled with concrete, and the steel pipe lattice column structure The first steel plate is set at the bottom of the structure, the second steel plate is set on the top of the steel pipe lattice column structure, and the two adjacent steel pipes in each steel pipe lattice column structure are connected by connecting pieces, and there are multiple steel pipes between the adjacent two steel pipes.排连接件。 Row connectors.
The method for hoisting heavy equipment adjacent to an unclosed building according to claim 1, wherein the step of setting backfill soil on one side of the unclosed building is as follows:

Vertically install steel pipes of steel pipe lattice column structure on the bottom surface of the foundation pit, and set the interval between adjacent steel pipe lattice columns according to the set distance;

Set up a row of steel sheet piles on both sides of the side wall of the unclosed building in the foundation pit, and set the interval between the two rows of steel sheet piles according to the set distance;

The two rows of steel sheet piles are connected by setting steel wire ropes, and the steel wires are arranged in layers. During the layered installation of the steel wire ropes, soil is gradually backfilled between the two rows of steel sheet piles;

When the soil is backfilled to the same elevation on the top of the steel pipe, a second steel plate is installed on the top of the steel pipe, expanded steel mesh is laid on the top of the second steel plate and the backfilled soil, and a concrete reinforcement layer is poured, while concrete is poured into the steel pipe of the steel pipe lattice column.
The method for hoisting heavy equipment for nearby unclosed buildings according to claim 7, wherein the method for setting the steel wire rope is as follows:

Place the I-beam on the outer side of a row of steel sheet piles, the steel wire rope will go around the end of the I-beam and fasten it with a buckle.

After the wire rope is tightened by the rope tightener, the other end of the wire rope is fixed with a buckle.
The method for hoisting heavy equipment for nearby unclosed buildings according to claim 7, characterized in that the steel wire ropes are cut after the hoisting construction is completed, and the steel sheet piles on both sides of the backfilled soil are recovered.
The method for hoisting heavy equipment of a nearby unclosed building according to claim 1, wherein the height of the backfilled soil is taken to the minimum value on the premise that the working requirements of the second-level lifting equipment are met.