Corridor hoisting and integral hoisting method under adverse space conditions

Abstract

The application discloses a gallery overall hoisting method under adverse space conditions, first, according to the overall design structure of the gallery, the gallery is divided into several sections; second, sequentially from both ends to the middle, assembling to the adverse space position, remaining at least two sections of the gallery to be assembled; then, the gallery close to the adverse space position is hoisted first by using the gallery hoisting method under adverse space conditions; finally, hoisting the gallery main body of the remaining section. The scheme makes full use of the narrow space on site, solves the gallery assembling, hoisting, lower suspension rod installation and other matters, so as to ensure the smooth progress of the gallery hoisting, effectively reduces the construction period and the problem that personnel cannot be reasonably utilized due to the site environment, and simultaneously reduces the safety risk caused by high-altitude assembling. The overall sectional hoisting mode is higher in operation efficiency, more reasonable in space application and time application, faster in installation speed, shorter in construction period, convenient for workers to install, and safer in the construction process.

Description

Technical Field

[0001] This invention relates to the field of building corridor construction technology, specifically to a method for hoisting and overall hoisting of corridors under unfavorable spatial conditions. Background Technology

[0002] In the construction of corridors, the conventional method for assembling steel structures involves transporting the steel structure in loose or sheet-like pieces to the site, assembling them, and then lifting them into place or using a jacking method to lift the steel corridor onto the corresponding supports. This process is repeated until the hoisting process is completed before proceeding to the next step. Conventional steel structure assembly requires a relatively wide and flat assembly site to ensure convenient positioning and hoisting of on-site lifting equipment.

[0003] However, site conditions, logistics, and space constraints often prevent the use of the aforementioned construction techniques, making it difficult to guarantee the extremely tight project schedule. Especially in environments with surrounding obstacles and buildings, and narrow construction widths, the assembly and hoisting of corridors is a pressing issue that urgently needs to be addressed in this field. Summary of the Invention

[0004] Due to the aforementioned deficiencies in the existing technology, the present invention provides a method for hoisting a corridor under unfavorable spatial conditions and for hoisting the entire structure, in order to solve the problem of the difficulty in hoisting a corridor under unfavorable conditions in the existing technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The method for hoisting equipment in a corridor under unfavorable spatial conditions includes the following steps:

[0007] Step 1: Calculate the unit dimensions for the corridor assembly based on the site space conditions;

[0008] Step 2: Pre-position a hoisting device at the far end of the corridor installation section;

[0009] Step 3: Assemble the main structure of the corridor in sections on the adjacent open ground;

[0010] Step 4: Lift and move the main body of the corridor to a certain height below the target position and suspend it in the air, and use the pre-set hoisting equipment to lift the far end of the main body of the corridor;

[0011] Step 5: Install the lower suspension bar;

[0012] Step 6: After the lower suspension rod is installed, raise the far end of the main corridor and lower the near end to the ground;

[0013] Step 7: Install the mounting brackets near the main structure of the corridor;

[0014] Step 8: Use another hoisting device to lift the near end of the main body of the corridor. The hoisting devices at both ends lift simultaneously until the main body of the corridor reaches the installation position.

[0015] Step 9: Adjust the main body of the corridor to the designated position and then fix it in place.

[0016] In step 4, two hoisting devices are used to lift one end of the main body of the corridor, and the main body of the corridor is moved as a whole to the target position. Then, the hoisting device at the far end is replaced.

[0017] In step 4, the height of the main structure of the corridor suspended in the air is greater than the assembly height of the lower suspension rod.

[0018] In step 5, a manual hoist is used for assembly.

[0019] After the lower suspension rod is assembled, the lifting height is based on the distance across the on-site buildings, obstacles, and between the two supports.

[0020] The method for hoisting a corridor as a whole under unfavorable spatial conditions includes the following steps:

[0021] Step a: Divide the corridor into several sections according to its overall design structure;

[0022] Step b: Assemble the sections from both ends toward the middle, assembling them until the unfavorable space is reached, leaving at least two sections of the corridor to be assembled.

[0023] Step c: Using the corridor hoisting method under unfavorable space conditions, first hoist the corridor near the unfavorable space location;

[0024] Step d: Install the remaining sections of the main corridor structure in sequence.

[0025] The two ends of the corridor have a height difference.

[0026] The assembly and hoisting of different sections of the corridor are determined based on the surrounding space and obstacles.

[0027] The hoisting method, hoisting device specifications, and arrangement are selected according to the weight and volume of different sections.

[0028] The hoisting equipment includes cranes of different sizes and manual hoists.

[0029] Compared with the prior art, the above invention has the following advantages or beneficial effects:

[0030] 1. Make full use of the limited space on site to solve problems such as corridor assembly, hoisting, and lower suspension installation, so as to ensure the smooth progress of corridor hoisting, effectively reduce the problems of project schedule and inefficient use of personnel caused by site environment issues, and reduce the safety risks brought about by high-altitude assembly.

[0031] 2. The overall segmented hoisting method results in higher work efficiency, more rational use of space and time, faster installation speed, shorter construction period, easier installation for workers, and safer construction process. Attached Figure Description

[0032] The invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not drawn to scale; their focus is on illustrating the gist of the invention.

[0033] Figure 1 This is a schematic diagram of the overall movement of the corridor hoisting method under unfavorable spatial conditions according to the present invention.

[0034] Figure 2 This is a schematic diagram of the hoisting method for corridors under unfavorable spatial conditions according to the present invention.

[0035] Among them, 1-6 are the installation positions of the first to sixth sections of the corridor, respectively; 7-first crane; 8-second crane; 9-third crane; 10-fifth section support. Detailed Implementation

[0036] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0037] The definition of unfavorable space in this invention is as follows: The construction or hoisting area of ​​conventional standard construction operations is the projected area of ​​the equipment or structure after normal assembly + the area used by hoisting and auxiliary machinery. In standard construction, the ground projected area after assembly at the hoisting position or nearby plus the area occupied by the hoisting machinery and the turning area are all considered as the effective usable area during the hoisting and installation process. In this hoisting operation, the unfavorable space is defined as less than the projected area after normal assembly of the equipment or structure.

[0038] The method for hoisting equipment in a corridor under unfavorable spatial conditions includes the following steps:

[0039] Step 1: Calculate the unit dimensions for the corridor assembly based on the site space conditions;

[0040] Step 2: Pre-position a hoisting device at the far end of the corridor installation section;

[0041] Step 3: Assemble the main structure of the corridor in sections on the adjacent open ground;

[0042] Step 4: Lift and move the main body of the corridor to a certain height below the target position and suspend it in the air, and use the pre-set hoisting equipment to lift the far end of the main body of the corridor;

[0043] Step 5: Install the lower suspension bar;

[0044] Step 6: After the lower suspension rod is installed, raise the far end of the main corridor and lower the near end to the ground;

[0045] Step 7: Install the mounting brackets near the main structure of the corridor;

[0046] Step 8: Use another hoisting device to lift the near end of the main body of the corridor. The hoisting devices at both ends lift simultaneously until the main body of the corridor reaches the installation position.

[0047] Step 9: Adjust the main body of the corridor to the designated position and then fix it in place.

[0048] The method for hoisting the entire corridor in sections under unfavorable spatial conditions includes the following steps:

[0049] Step a: Divide the corridor into several sections according to its overall design structure;

[0050] Step b: Assemble the sections from both ends toward the middle, assembling them until the unfavorable space is reached, leaving at least two sections of the corridor to be assembled.

[0051] Step c: Using the corridor hoisting method under unfavorable space conditions, first hoist the corridor near the unfavorable space location;

[0052] Step d: Install the remaining sections of the main corridor structure in sequence.

[0053] Specific embodiments, such as Figure 1 , Figure 2 As shown,

[0054] The following example, which uses a double-passage corridor with a total of six spans (six sections) and the fifth span being hoisted under unfavorable spatial conditions, as a specific example, will be used to explain this scheme in detail. The terms "span" and "section" are different names for the same concept and do not affect the specific content of this scheme.

[0055] In this embodiment, the fifth span is located where the road surface width is smaller than the corridor width, and there are obstacles such as buildings and pipelines crossing the road on the roadside. The fourth and fifth spans of the double corridor are 36m and 55.5m long, respectively. Due to site constraints, assembly is the main challenge. The lower part of the fifth span corridor is a lower cantilever structure, with a height basically the same as the upper structure of the corridor. The overall width of the corridor is 8.08m, and the height is 7.82m (corridor height 3.8m, lower cantilever height 4.02m). The overall hoisting height is 33.3 to 41.35m, the tilt angle is 8.264°, and the weight is 110 tons. Vertical lifting on site is difficult, and steel structure transportation is also difficult. The on-site road is 6m wide, and the surrounding area consists of existing buildings, structures, and operating facilities.

[0056] The conventional method for assembling steel structures involves transporting the steel structure in loose or sheet-like pieces to the site, assembling them, and then lifting them into place or using a jacking method to lift the steel structure corridor to the corresponding supports. This process is repeated until the hoisting process is completed before proceeding to the next step. Conventional steel structure assembly requires a relatively spacious and flat assembly site to facilitate the placement and hoisting of on-site lifting equipment. However, due to site conditions, logistics, and site limitations, the above-mentioned process cannot be used, making it difficult to meet the extremely tight schedule of this project.

[0057] The specific construction data for this embodiment will be analyzed below:

[0058] In this embodiment, the fifth span is 55.5m long. The lower part of the corridor is a cantilever structure with a height that is basically the same as the upper part of the corridor. The overall width of the corridor is 8.08m, the height is 7.82m (corridor height is 3.8m, cantilever height is 4.02m), the overall hoisting height is 33.3 to 41.35m, the tilt angle is 8.264°, and the weight is 110 tons.

[0059] The standard construction projection area is L55.5*8.08=448.44 square meters. Adding the area of ​​the lifting machinery on both sides (a 600-ton truck crane is 26.7m long and 15.7m wide after occupying the space), the total area is 419.19 square meters*2=839 square meters, for a total of 1287.44 square meters.

[0060] The unfavorable space involved in this project is L39.08m wide, which is 6 meters wide as the original road and 8.4m wide after paving, for a total area of ​​328.355 square meters. Adding the area occupied by the crane on one side, which is 419.19 square meters (a 600-ton truck crane is 26.7m long and 15.7m wide after paving), and the crane position on the other side which overlaps with the later projected area of ​​the structure, it is not considered for the time being, the total area is 747.545 square meters.

[0061] Based solely on the structural projection area, the following conclusions can be drawn: the standard space occupies an area of ​​448.44 square meters, while the unfavorable space occupies an area of ​​328.355 square meters. In comparison, the overall area of ​​the unfavorable space accounts for 73.22% of the standard space area. In addition, considering the overlap between the lifting machinery and the structural projection area on one side, it is clear that construction within this space is more difficult and challenging.

[0062] In summary, this embodiment describes the overall hoisting of the corridor, where the corridor is divided into several sections and hoisted segment by segment. During the hoisting process, each section is hoisted as a unit to the target position. The specific process is as follows:

[0063] Step a: Based on the overall design structure of the corridor, the corridor is divided into 6 sections, namely the first section corridor 1 to the sixth section corridor 6. Among them, the first section corridor 1 is the lowest span, the sixth section corridor 6 is the highest span, and the fifth section corridor 5 is the section with unfavorable spatial conditions.

[0064] Step b: Assemble and hoist the equipment from both ends toward the middle. First, assemble and hoist the first to third and sixth sections. The fourth and fifth sections remain, but the support between the fourth and fifth sections will not be installed yet.

[0065] Step c: Using the corridor hoisting method under unfavorable space conditions, the fifth section of corridor 5 in the unfavorable space location is first assembled and hoisted; the specific assembly and hoisting process of the fifth section of corridor 5 is as follows:

[0066] Step 1: Based on the unit dimensions of the fifth corridor, select three lifting machines. Two of the same model are located in the front and rear sections respectively (selected according to the space of obstacles on site). The middle one is the transition equipment, the second crane 8, which is located between the fourth and fifth corridors.

[0067] Step 2: Pre-position a hoisting device at the far end of the corridor installation section, that is, the third crane 9 is located at one end close to the sixth section of the corridor 6;

[0068] Step 3: The first crane 7 is located on the outside near the third section of the corridor 3, and assembles the main body of the fifth section of the corridor 5 on the open ground near the fourth section of the corridor 4;

[0069] Step 4: Use the first crane 7 and the second crane 8 to lift and move the main body of the corridor to a certain height below the target position and suspend it in the air to ensure the installation height of the lower suspension rods of the corridor. Then, use the pre-set third crane 9 to replace the second crane 8 to lift the far end of the fifth section of the main body of the corridor.

[0070] Step 5: On-site workers use a manual hoist to assemble and position the lower suspension rod;

[0071] Step 6: After the lower suspension rod is installed, the fifth section of the corridor is positioned with the higher side raised and the lower side lowered. That is, the far end of the main body of the corridor near the sixth section of the corridor 6 is raised, and the near end near the fourth section of the corridor 4 is lowered. The lifting height is based on the distance across the on-site structures and between the two supports.

[0072] Step 7: Use the first crane 7 to install the fifth section bracket 10 between the main body of the fifth section corridor and the fourth section corridor;

[0073] Step 8: Use another hoisting device to lift the near end of the main body of the corridor. The hoisting devices at both ends lift simultaneously until the main body of the corridor reaches the installation position.

[0074] Step 9: Adjust the main body of the corridor to the designated position and then fix it in place.

[0075] Step d: Hoist the fourth section of the corridor 4 to the designated position, and the entire main structure of the corridor will be hoisted into place.

[0076] In step 4, the height of the main structure of the corridor suspended in the air must be greater than the assembly height of the lower suspension rod.

[0077] In this embodiment, the first crane 7 and the third crane 9 use 600t truck cranes, and the second crane 8 uses 200t truck cranes. The lifting distance is selected according to the specific length of the corridor.

[0078] The assembly and hoisting of different sections of the corridor are determined based on the surrounding space and obstacles.

[0079] The hoisting method, hoisting device specifications, and arrangement are selected according to the weight and volume of different sections.

[0080] The hoisting equipment includes cranes of different specifications and manual hoist combinations.

[0081] This solution makes full use of the limited space on site to solve problems such as corridor assembly, hoisting, and lower suspension rod installation, ensuring the smooth progress of corridor hoisting. It effectively reduces the problems of project schedule and inefficient use of personnel caused by site environment issues, while also reducing the safety risks of high-altitude assembly. This solution has higher work efficiency, more reasonable use of space and time, faster installation speed, shortens the construction period, is convenient for workers to install, and makes the construction process safer.

[0082] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0083] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0084] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0085] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0086] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a conventional manner in the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention using the methods and techniques disclosed above, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the present invention. This does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the present invention's technical solutions still fall within the protection scope of the present invention.

Claims

1. A method for hoisting equipment in a corridor under unfavorable spatial conditions, characterized by: Includes the following steps: Step 1: Calculate the unit dimensions for the corridor assembly based on the site space conditions; Step 2: Pre-position the third crane at the far end of the corridor installation section; Step 3: Assemble the main structure of the corridor in sections on the adjacent open ground; Step 4: Use the first and second cranes to lift and move the main body of the corridor to a certain height below the target position and suspend it in the air. Then, use the pre-set third crane to lift the far end of the main body of the corridor. Use two hoisting devices to lift one end of the main body of the corridor and move the main body of the corridor to the target position as a whole. Then, replace the hoisting device at the far end. Step 5: Install the lower suspension bar; Step 6: After the lower suspension rod is installed, raise the far end of the main corridor and lower the near end to the ground; Step 7: Install the mounting brackets near the main structure of the corridor; Step 8: Use the first crane to lift the near end of the main structure of the corridor, and simultaneously lift the hoisting equipment at both ends until the main structure of the corridor reaches the installation position; Step 9: Adjust the main body of the corridor to the designated position and then fix it in place.

2. The method for hoisting a passageway under unfavorable spatial conditions according to claim 1, characterized in that: In step 4, the height of the main structure of the corridor suspended in the air is greater than the assembly height of the lower suspension rod.

3. The method for hoisting a passageway under unfavorable spatial conditions according to claim 1, characterized in that: In step 5, a manual hoist is used for assembly.

4. The method for hoisting a passageway under unfavorable spatial conditions according to claim 1, characterized in that: After the lower suspension rod is assembled, the lifting height is based on the distance across the on-site buildings, obstacles, and between the two supports.

5. A method for hoisting a corridor as a whole under unfavorable spatial conditions, characterized in that: Includes the following steps: Step a: Divide the corridor into several sections according to its overall design structure; Step b: Assemble the sections from both ends toward the middle, assembling them until the unfavorable space is reached, leaving at least two sections of the corridor to be assembled. Step c: Using the corridor hoisting method under unfavorable space conditions as described in any one of claims 1 to 4, the corridor near the unfavorable space location is hoisted first; Step d: Install the remaining sections of the main corridor structure in sequence.

6. The method for overall hoisting of a corridor under unfavorable spatial conditions according to claim 5, characterized in that: The two ends of the corridor have a height difference.

7. The method for overall hoisting of a corridor under unfavorable spatial conditions according to claim 5, characterized in that: Cranes and manual hoists of different specifications are used.

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