CN112125238A - Construction and installation method of steel beam in shaft - Google Patents
Construction and installation method of steel beam in shaft Download PDFInfo
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- CN112125238A CN112125238A CN202010776248.2A CN202010776248A CN112125238A CN 112125238 A CN112125238 A CN 112125238A CN 202010776248 A CN202010776248 A CN 202010776248A CN 112125238 A CN112125238 A CN 112125238A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
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Abstract
According to the construction and installation method of the steel beam in the shaft, the operation steel platform is reliably fixed on the inner wall of the shaft through the multiple jackscrews, so that the operation steel platform is prevented from shaking; the number of personnel on the platform can be reduced to the greatest extent in the process of moving the operating steel platform downwards, and accidental safety accidents are avoided; according to the method, an independent winch system is adopted for the operation steel platform and the hanging basket, so that the arrangement of the vertical shaft mouth tooling facilities is simpler and easier to operate, the stable suspension and lifting of the operation steel platform are ensured, the risk of falling from a high place is avoided, the operation space is provided to the maximum extent, the steel wire rope is better protected, the steel wire rope is prevented from being damaged, and the influence of ground personnel, equipment and environment on the construction operation in the vertical shaft is reduced; the method is safe and reliable, strong in operability, high in work efficiency and low in cost, can effectively solve the problems of hanging and lifting the operation steel platform in the vertical shaft, remarkably reduces the safety risk and the construction difficulty of the steel beam construction in the vertical shaft, improves the operation efficiency and promotes the technical progress of the installation and construction of the vertical shaft.
Description
Technical Field
The invention relates to the technical field of shaft construction, in particular to a construction and installation method of a steel beam in a shaft.
Background
At present, the adoption of underground caverns for storing crude oil has become a development trend of national crude oil reserves. The vertical shaft of the underground cave depot is vertically dug above the cave depot, and the crude oil inlet and outlet operations of the cave depot are completed through the vertical shaft.
And after the shaft is excavated, mounting a steel structure, a pipeline and accessories in the shaft. In the construction of underground cave depots, a key ring is to install steel structures, pipelines and accessories inside the vertical shaft. The inner wall structure of the vertical shaft of the underground cave depot is divided into an upper building section and a lower rock section, and blasting construction causes the inner diameter of the vertical shaft to be uneven in size and the inside of the vertical shaft is moist and even seeps water in a large area. The vertical height of the vertical shaft is about 110 meters from the ground downwards, the diameter of the vertical shaft is about 5 meters generally, a steel structure is installed in the vertical shaft in a layering mode from a wellhead, high-altitude operation in the vertical shaft is frequent and long in duration, high-altitude falling risks are large, the operation environment is humid, fire, electricity and hoisting operation are multiple, and the construction in the vertical shaft needs to be carried out with the help of a winch, a steel platform and a hanging basket. Because the internal space of the shaft is narrow, moist and deep in vertical depth, the operations of hoisting, firing, power utilization and the like are restricted by the environment, the construction difficulty is high, and the safety risk is high. Wherein, the unexpected condition of hoist and mount system takes place for the unstable, the unreliable and unstable and work progress of hanging of operation steel platform, all will lead to equipment, facility damage, eminence to fall or even personnel fall casualties, consequently improves construction maneuverability, reliability in the shaft, eliminates the work progress eminence risk of falling very crucial.
The existing installation modes of the steel structure, the pipeline and the accessories in the vertical shaft are generally two types: (1) erecting scaffolds in the cave depot and the vertical shaft, and performing construction and installation operation on the scaffolds from top to bottom by constructors; (2) the high tower frame about 15m is set up at the shaft mouth of the shaft, is connected inside operation steel platform and hoist engine wire rope, puts the inside operation position of shaft from the tower top down through the hoist engine with operation steel platform, and the hanging flower basket is also transferred to the shaft from the tower top with the hoist engine in, and personnel get into the shaft from the hanging flower basket, and the material is from up hoist and mount down in the hole storehouse bottom.
The mounting process for erecting the scaffold inside has the following defects: because cave depot and shaft inner space are very limited, and scaffold setting height is greater than 100m, assemble and dismantle scaffold and need a large amount of scaffold materials, consume a large amount of construction operation time, the cycle is longer, and the construction degree of difficulty is big, and the safety risk is high. The disadvantages of the erection process of the tower are as follows: the long-distance lifting of the operation steel platform and the hanging basket in the vertical shaft is easy to shake and poor in stability, the steel wire rope is not protected easily in the fire operation process, the steel wire rope is easy to be broken by fire, and the falling safety risk is high; the hoisting from bottom to top is not easy to control the hoisting accident; temporary materials and tools are more in input by adopting modes such as a wellhead tower and the like, and the construction cost is high and the period is long.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a construction and installation method of a steel beam in a shaft, which is safe, reliable, strong in operability, high in work efficiency and low in cost, aiming at the defects of the prior art, can effectively solve the problems of hanging and lifting of an operation steel platform in the shaft, remarkably reduces the safety risk and the construction difficulty of the construction of the steel beam in the shaft, improves the operation efficiency and promotes the technical progress of shaft installation and construction.
The technical scheme adopted by the invention for solving the technical problems is as follows: a construction and installation method of a steel beam in a shaft well comprises the following steps:
(1) manufacturing an operation steel platform, wherein the operation steel platform comprises a base, a guardrail and a plurality of lifting lugs, the guardrail and the lifting lugs are respectively fixed on the upper side of the base, the lifting lugs are positioned on the inner side of the guardrail, and a plurality of jackscrews are additionally arranged on the peripheral wall of the base;
(2) arranging 3 winches and a plurality of ground guide pulleys around a vertical shaft mouth, wherein the bearing capacity of 2 winches is matched with the weight and the bearing weight of the operation steel platform, and the bearing capacity of 1 winch is matched with the weight and the bearing weight of the hanging basket;
(3) hoisting the assembled and welded wellhead steel beam, namely the first layer steel beam, respectively penetrating 4 hanging strips on 4 lifting lugs of an operation steel platform, temporarily suspending the operation steel platform below the wellhead steel beam through the 4 hanging strips, hoisting the wellhead steel beam together with the operation steel platform by using a crane and placing the wellhead steel beam into a vertical shaft until the wellhead steel beam is placed on a derrick foundation embedded plate preset on a vertical wellhead; installing a portal frame and a hanging basket guide pulley above a steel beam at the wellhead, connecting the hanging basket with a matched winch through the hanging basket guide pulley and a hanging basket steel wire rope, and conveying personnel to an operation steel platform after the hanging basket is installed and qualified through a bearing capacity test; after entering the operation steel platform, the personnel fix the operation steel platform on the inner wall of the vertical shaft by a plurality of jackscrews;
(4) connecting 2 winches matched with the operation steel platform with lifting lugs of the operation steel platform through 1 platform steel wire rope and a plurality of ground guide pulleys respectively, disassembling 4 lifting straps connected to the operation steel platform, and then loosening a plurality of jackscrews on the peripheral wall of the operation steel platform;
(5) synchronously lowering the operation steel platform to 0.8-1.2 m below the installation position of the next layer of steel beams by 2 windlasses matched with the operation steel platform, fixing the operation steel platform on the inner wall of the vertical shaft by using a plurality of jackscrews, then putting a worker into a hanging basket, lowering the hanging basket by the windlasses matched with the hanging basket, putting the worker into the operation steel platform, connecting a safety belt on the worker to the upper layer of steel beams, respectively penetrating 4 hanging belts on 4 hanging lugs of the operation steel platform, hanging the operation steel platform below the upper layer of steel beams by using the 4 hanging belts, disassembling 2 platform steel wire ropes connected on the hanging lugs of the operation steel platform, penetrating a gap of the next layer of steel beams through a portal steel beam by using a crane or the hanging basket, hoisting the next layer of steel beams into the vertical shaft, leveling the next layer of steel beams to the installation position of the next layer of steel beams by adjusting;
(6) repeating the step (4) -the step (5), completing the installation of other steel beams in the well from top to bottom, after the assembly welding of the last steel beam in the well is completed, connecting 2 windlasses matched with the operation steel platform with lifting lugs of the operation steel platform through 1 platform steel wire rope and a plurality of ground guide pulleys respectively, disassembling 4 lifting straps connected on the operation steel platform, loosening a plurality of jackscrews on the peripheral wall of the operation steel platform, synchronously lowering the operation steel platform to the bottom of the shaft through 2 windlasses matched with the operation steel platform, disassembling 2 platform steel wire ropes connected on the lifting lugs of the operation steel platform, disassembling the operation steel platform at the bottom of the shaft, and transporting the disassembled material to the outside of the shaft through a construction roadway communicated with the shaft.
Preferably, the base is formed by splicing two symmetrical steel plates, and the two steel plates are connected through bolts. The design of above-mentioned base, be convenient for equipment, dismantlement, transportation and reuse make things convenient for the quick disassembling of the operation steel platform after the installation of last one deck girder steel is accomplished, only need to decompose the base into 2 and transport outside the shaft from the construction tunnel to further reduce interior construction operating time of well, improve the operating efficiency.
Preferably, in the step (5), after the next layer of steel beams penetrate through gaps of the wellhead steel beams and are hoisted into the shaft through a crane or a hanging basket, a chain block is temporarily installed on the previous layer of steel beams, the next layer of steel beams are hoisted through the chain block, the next layer of steel beams are adjusted and laid to the installation position, and then the assembly welding of the next layer of steel beams is completed. The next layer of steel beam is hoisted through the chain block, the adjustment, the leveling and the assembly welding operation of the next layer of steel beam are realized, the reliability of the operation can be improved, and the safety is further ensured.
Compared with the prior art, the invention has the following advantages:
(1) the construction and installation method of the steel beam in the shaft is safe and reliable, strong in operability, high in work efficiency and low in cost, can effectively solve the problems of hanging and lifting of the operation steel platform in the shaft, remarkably reduces the safety risk and the construction difficulty of the steel beam construction in the shaft, improves the operation efficiency and promotes the technical progress of shaft installation construction;
(2) according to the construction and installation method, aiming at the operation steel platform and the hanging basket, an independent winch system is adopted, so that the operation steel platform or the hanging basket can be prevented from being transported by the same winch in an alternate operation mode, the occurrence of non-ideal direction adjustment and stress of the steel wire rope is avoided, the arrangement of a vertical shaft mouth tool facility is simpler and easier to operate, the stable suspension and lifting of the operation steel platform are ensured, the risk of falling from a high position is avoided, the operation space is provided to the maximum extent, meanwhile, the effective isolation of the steel wire rope and a fire point can be realized, the rope breakage accident of the steel wire rope in the fire environment is avoided, the long-distance and long-time hoisting of the steel wire rope on the operation steel platform is avoided, the steel wire rope is better protected, the damage of the steel;
(3) the operation steel platform adopted by the construction installation method is simple to operate, safe and reliable in installation operation process, and the operation steel platform in a suspension state can be reliably fixed on the inner wall of the vertical shaft by the aid of the jackscrews additionally arranged on the peripheral wall of the base, so that the operation steel platform is prevented from shaking; the number of personnel on the platform can be reduced to the greatest extent in the process of moving the operating steel platform downwards, and accidental safety accidents are avoided;
(4) the construction and installation method of the invention cancels the traditional facilities such as scaffolds, towers and the like with high cost and long time consumption, can save a large amount of temporary materials and tools, and saves the cost.
Drawings
FIG. 1 is a schematic view showing the state of the inside of a well when a third steel beam layer is assembled and welded in the embodiment.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The construction and installation method of the steel beam in the shaft well comprises the following steps:
(1) manufacturing an operation steel platform, referring to fig. 1, the operation steel platform comprises a base 11, a guardrail 12 and 4 lifting lugs 13, wherein the guardrail 12 and the 4 lifting lugs 13 are respectively fixed on the upper side of the base 11, the 4 lifting lugs 13 are positioned on the inner side of the guardrail 12, the base 11 is formed by splicing two symmetrical steel plates, the two steel plates are connected through bolts, and a plurality of jackscrews 14 (at least 8) are additionally arranged on the peripheral wall of the base 11;
(2) 3 winches (not shown in the figure) and a plurality of ground guide pulleys 2 are arranged around the shaft mouth, wherein the bearing capacity of the 2 winches is matched with the weight and the bearing weight of the operation steel platform, and the bearing capacity of the other 1 winch is matched with the weight and the bearing weight of the hanging basket 4;
(3) hoisting the assembled and welded wellhead steel beam 51 by using a crane (not shown in the figure), wherein the wellhead steel beam 51 is a first layer steel beam, respectively penetrating 4 hanging straps 6 on 4 lifting lugs 13 of the operation steel platform, temporarily suspending the operation steel platform below the wellhead steel beam 51 through the 4 hanging straps 6, hoisting the wellhead steel beam 51 together with the operation steel platform by using the crane into a vertical shaft 7 until the wellhead steel beam 51 is placed on a derrick foundation embedded plate 71 preset on the vertical wellhead; installing a portal frame 3 and a hanging basket guide pulley 31 above a wellhead steel beam 51, connecting a hanging basket 4 with a matched winch through the hanging basket guide pulley 31 and a hanging basket steel wire rope 32, and conveying personnel to an operation steel platform after the hanging basket 4 is installed and qualified through a bearing capacity test; after entering the operation steel platform, the personnel fix the operation steel platform on the inner wall of the vertical shaft by a plurality of jackscrews;
during construction, personnel, equipment, materials and the like are conveyed to an in-well operation steel platform through a hanging basket 4, and are coordinated and communicated with each other through an interphone above and below the well;
(4) connecting 2 winches matched with the operation steel platform with a lifting lug 13 of the operation steel platform through 1 platform steel wire rope (not shown in the figure) and a plurality of ground guide pulleys 2 respectively, detaching 4 lifting straps 6 connected to the operation steel platform, and then loosening a plurality of jackscrews 14 on the peripheral wall of the operation steel platform;
(5) synchronously lowering the operation steel platform to 1.0m below the installation position of the next layer of steel beams 52 by 2 windlasses matched with the operation steel platform, fixing the operation steel platform on the inner wall 72 of the shaft by a plurality of jackscrews 14, then entering a hanging basket 4, lowering the hanging basket 4 by the windlasses matched with the hanging basket 4, entering the operation steel platform and connecting safety belts 61 on the personnel on the operation steel platform on the steel beams on the upper layer, respectively penetrating 4 hanging belts 6 on 4 hanging lugs 13 of the operation steel platform, hanging the operation steel platform below the steel beams on the upper layer by the 4 hanging belts 6, disassembling 2 platform steel wire ropes connected on the hanging lugs 13 of the operation steel platform, hoisting the steel beams 52 on the lower layer into the shaft 7 by a crane through gaps of the steel beams 51 on the well mouth, temporarily installing 2 tons of chain blocks 8 on the steel beams on the upper layer, hoisting the steel beams 52 on the lower layer by the chain blocks 8, adjusting and leveling the next layer of steel beams 52 to the installation position, and then completing the assembly welding of the next layer of steel beams 52, wherein the schematic diagram of the state in the well can be seen in fig. 1;
(6) and (5) repeating the steps (4) to (5), completing the installation of other steel beams in the well from top to bottom, after the assembly welding of the last steel beam in the well is completed, connecting 2 windlasses matched with the operation steel platform with lifting lugs 13 of the operation steel platform through 1 platform steel wire rope and a plurality of ground guide pulleys 2 respectively, disassembling 4 lifting straps 6 connected to the operation steel platform, loosening a plurality of jackscrews 14 on the peripheral wall of the operation steel platform, synchronously lowering the operation steel platform to the bottom of the vertical shaft 7 through 2 windlasses matched with the operation steel platform, disassembling 2 platform steel wire ropes connected to the lifting lugs 13 of the operation steel platform, disassembling the operation steel platform at the bottom of the vertical shaft 7, and transporting the disassembled material to the outside of the vertical shaft through a construction roadway (not shown in the figure) communicated with the vertical shaft 7.
Claims (3)
1. A construction and installation method of a steel beam in a shaft well is characterized by comprising the following steps:
(1) manufacturing an operation steel platform, wherein the operation steel platform comprises a base, a guardrail and a plurality of lifting lugs, the guardrail and the lifting lugs are respectively fixed on the upper side of the base, the lifting lugs are positioned on the inner side of the guardrail, and a plurality of jackscrews are additionally arranged on the peripheral wall of the base;
(2) arranging 3 winches and a plurality of ground guide pulleys around a vertical shaft mouth, wherein the bearing capacity of 2 winches is matched with the weight and the bearing weight of the operation steel platform, and the bearing capacity of 1 winch is matched with the weight and the bearing weight of the hanging basket;
(3) hoisting the assembled and welded wellhead steel beam, namely the first layer steel beam, respectively penetrating 4 hanging strips on 4 lifting lugs of an operation steel platform, temporarily suspending the operation steel platform below the wellhead steel beam through the 4 hanging strips, hoisting the wellhead steel beam together with the operation steel platform by using a crane and placing the wellhead steel beam into a vertical shaft until the wellhead steel beam is placed on a derrick foundation embedded plate preset on a vertical wellhead; installing a portal frame and a hanging basket guide pulley above a steel beam at the wellhead, connecting the hanging basket with a matched winch through the hanging basket guide pulley and a hanging basket steel wire rope, and conveying personnel to an operation steel platform after the hanging basket is installed and qualified through a bearing capacity test; after entering the operation steel platform, the personnel fix the operation steel platform on the inner wall of the vertical shaft by a plurality of jackscrews;
(4) connecting 2 winches matched with the operation steel platform with lifting lugs of the operation steel platform through 1 platform steel wire rope and a plurality of ground guide pulleys respectively, disassembling 4 lifting straps connected to the operation steel platform, and then loosening a plurality of jackscrews on the peripheral wall of the operation steel platform;
(5) synchronously lowering the operation steel platform to 0.8-1.2 m below the installation position of the next layer of steel beams by 2 windlasses matched with the operation steel platform, fixing the operation steel platform on the inner wall of the vertical shaft by using a plurality of jackscrews, then putting a worker into a hanging basket, lowering the hanging basket by the windlasses matched with the hanging basket, putting the worker into the operation steel platform, connecting a safety belt on the worker to the upper layer of steel beams, respectively penetrating 4 hanging belts on 4 hanging lugs of the operation steel platform, hanging the operation steel platform below the upper layer of steel beams by using the 4 hanging belts, disassembling 2 platform steel wire ropes connected on the hanging lugs of the operation steel platform, penetrating a gap of the next layer of steel beams through a portal steel beam by using a crane or the hanging basket, hoisting the next layer of steel beams into the vertical shaft, leveling the next layer of steel beams to the installation position of the next layer of steel beams by adjusting;
(6) repeating the step (4) -the step (5), completing the installation of other steel beams in the well from top to bottom, after the assembly welding of the last steel beam in the well is completed, connecting 2 windlasses matched with the operation steel platform with lifting lugs of the operation steel platform through 1 platform steel wire rope and a plurality of ground guide pulleys respectively, disassembling 4 lifting straps connected on the operation steel platform, loosening a plurality of jackscrews on the peripheral wall of the operation steel platform, synchronously lowering the operation steel platform to the bottom of the shaft through 2 windlasses matched with the operation steel platform, disassembling 2 platform steel wire ropes connected on the lifting lugs of the operation steel platform, disassembling the operation steel platform at the bottom of the shaft, and transporting the disassembled material to the outside of the shaft through a construction roadway communicated with the shaft.
2. The construction and installation method of the steel beam in the shaft well as claimed in claim 1, wherein the base is formed by splicing two symmetrical steel plates, and the two steel plates are connected through bolts.
3. The method for constructing and installing steel beams in a shaft well is characterized in that in the step (5), after a next layer of steel beams is hoisted into the shaft well through gaps of the shaft well steel beams by a crane or a hanging basket, a chain block is temporarily installed on the upper layer of steel beams, the next layer of steel beams is hoisted by the chain block, the next layer of steel beams is adjusted and laid to the installation position, and then the assembly welding of the next layer of steel beams is completed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010776248.2A CN112125238B (en) | 2020-08-05 | 2020-08-05 | Construction and installation method of steel beam in shaft |
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| CN202010776248.2A CN112125238B (en) | 2020-08-05 | 2020-08-05 | Construction and installation method of steel beam in shaft |
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| CN112125238B CN112125238B (en) | 2021-11-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115432640A (en) * | 2022-09-27 | 2022-12-06 | 江苏东创建设工程有限公司 | Municipal administration tube-well construction auxiliary device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115432640A (en) * | 2022-09-27 | 2022-12-06 | 江苏东创建设工程有限公司 | Municipal administration tube-well construction auxiliary device |
| CN115432640B (en) * | 2022-09-27 | 2023-09-08 | 江苏东创建设工程有限公司 | Municipal administration tube well construction auxiliary device |
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| Publication number | Publication date |
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| CN112125238B (en) | 2021-11-30 |
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