CN110905260A - Construction method and jacking device for earth-covered oil tank and using method of jacking device - Google Patents
Construction method and jacking device for earth-covered oil tank and using method of jacking device Download PDFInfo
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- CN110905260A CN110905260A CN201911274127.1A CN201911274127A CN110905260A CN 110905260 A CN110905260 A CN 110905260A CN 201911274127 A CN201911274127 A CN 201911274127A CN 110905260 A CN110905260 A CN 110905260A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
- E04H7/02—Containers for fluids or gases; Supports therefor
- E04H7/04—Containers for fluids or gases; Supports therefor mainly of metal
- E04H7/06—Containers for fluids or gases; Supports therefor mainly of metal with vertical axis
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
- E04H7/02—Containers for fluids or gases; Supports therefor
- E04H7/18—Containers for fluids or gases; Supports therefor mainly of concrete, e.g. reinforced concrete, or other stone-like material
Abstract
The invention provides a construction method, a jacking device and a using method of an earth-covered oil tank, wherein the construction method comprises the following steps: a. pouring a concrete platform in a deep pit dug on the ground of the construction area; b. hoisting a tailor-welded assembly for manufacturing a steel storage tank onto the concrete platform, and building a mould to pour the concrete tank; c. dismantling all concrete pouring formworks; d. splicing and welding the bottom of the steel storage tank in the concrete tank, and arranging a plurality of jacking devices on the bottom of the tank; e. splicing and welding the side wall of the steel storage tank in the concrete tank, and splicing and welding the tank top of the steel storage tank above the side wall; f. lifting the side wall by using a lifting device, and welding the side wall of another circle of steel storage tank at the lower part of the lifting device; g. repeating the step f, and mutually welding the lower edge of the side wall of the lowest circle with the edge of the bottom of the steel storage tank; h. dismantling each jacking device in the steel storage tank body; i. and (3) respectively welding and sealing the reserved skylight and the manhole on the steel storage tank body, and plugging the temporary access of the concrete tank with concrete.
Description
Technical Field
The invention relates to the field of oil storage warehouse construction, in particular to a construction method and a jacking device for an earth-covered oil tank and a using method of the jacking device.
Background
In recent years, with the continuous deepening of the industrialization degree of China and the continuous progress of the industrial level, the large storage tank is applied to various industries due to low cost and large capacity. Among them, the earth-covered steel storage tank is the most common tank body in large-scale storage tanks, and is mainly applied to the storage of crude oil and product oil due to the advantages of high concealment, safety, long service life and the like. The earthing steel storage tank is composed of two parts, wherein the concrete tank is arranged outside the earthing steel storage tank, the steel vault tank is arranged inside the earthing steel storage tank, the horizontal elevation of the foundation of the earthing steel storage tank is generally 3-4m lower than that of the normal ground, the construction difficulty is high, and the technical requirement is high. In actual work progress, generally pour the latter half of concrete tank earlier, subaerial tailor-welded steel storage tank again, then will tailor-welded steel storage tank hoist to pour in half the concrete tank, the rest of concrete tank is poured again at last, and this kind of construction method has two problems: firstly, the pouring templates of the rest part of the pouring concrete tank are not easy to build; and secondly, the spliced and welded steel storage tank is large in size and heavy, and is not easy to install and position.
Disclosure of Invention
The invention aims to provide a construction method of an earth-covered steel storage tank, which aims to solve the problems that when the existing method is used for carrying out earth-covered steel storage tank construction, a pouring template of a concrete tank is not easy to build, and the steel storage tank is too large in size and inconvenient to hoist.
The second purpose of the invention is to provide a jacking device for construction of an earth-covered steel storage tank, which is used for solving the problem that the concrete tank is difficult to jack when the earth-covered oil tank is constructed.
The invention also aims to provide a using method of the jacking device for the construction of the earth covering steel storage tank, so as to improve the construction efficiency of the earth covering oil tank.
One of the objects of the invention is achieved by: a construction method of a soil-covered oil tank comprises the following steps:
a. digging a pit downwards on the ground of a construction area for construction operation and embedding of a soil covering oil tank, and pouring a concrete platform in the middle of the bottom surface of the pit to serve as the bottom of the concrete tank;
b. after the concrete platform is solidified, hanging a tailor-welded assembly for manufacturing the side wall and the top of the steel storage tank on the concrete platform, and upwards building a pouring template for pouring the tank wall and the tank top of the concrete tank along the edge of the concrete platform;
c. removing all the concrete pouring templates, transporting out of the tank and lifting out of the pit;
d. the bottom of a steel storage tank is welded on the bottom of the concrete tank by using the hung side wall tailor-welding assembly, and the bottom of the steel storage tank is centrally positioned on the bottom of the concrete tank; arranging a plurality of jacking devices on the bottom of the steel storage tank along the periphery of the bottom, wherein each jacking device comprises a vertical column with the length being greater than the total height of the steel storage tank body and an electric hoist arranged at the upper end of the vertical column, and the lower end of the vertical column is fixed on the bottom of the steel storage tank;
e. welding a circle of side wall of the steel storage tank in the concrete tank by using the hung side wall tailor-welding assembly, wherein the side wall of the steel storage tank surrounds the outer side of the jacking device, welding the tank top of the steel storage tank above the uppermost circle of side wall of the steel storage tank by using the hung tank top tailor-welding assembly, and reserving a skylight for the jacking device to extend outwards and a manhole for people to enter and exit on the tank top tailor-welding assembly;
f. after the top of the steel storage tank and the uppermost circle of side wall are welded, the steel storage tank is lifted by using a lifting device, the lower part of the steel storage tank is welded with the side wall of another circle of steel storage tank, and the upper edge of the side wall of the lower circle and the lower edge of the side wall of the upper circle are welded together;
g. repeating the step f until the side wall of the lowest circle is welded, and welding the lower edge of the side wall of the lowest circle and the edge of the bottom of the steel storage tank together;
h. dismantling each jacking device in the steel storage tank body, transporting out of the tank through a manhole of the steel storage tank body and a temporary access of the side wall of the concrete tank body, and lifting out of a pit;
i. and (3) respectively welding and sealing the reserved skylight and the manhole on the steel storage tank body, and well plugging the temporary access of the concrete tank with concrete, namely completing the construction of the earthing oil tank.
And an inclined strut is connected between the upright post of the jacking device and the bottom of the steel storage tank.
According to the construction method, the concrete tank is poured, and then the steel storage tank is spliced and welded in the concrete tank, so that the pouring template of the concrete tank is conveniently built, the construction efficiency is improved, and the risk of high-altitude operation of workers can be avoided. In addition, because the steel storage tank is spliced and welded in the concrete tank, the problem that the steel storage tank needs to be hoisted by large-scale hoisting equipment is solved, and the problem that the steel storage tank is difficult to hoist to the concrete tank half of which is poured is also solved. By adopting the method, the construction difficulty of the earthing oil tank can be effectively reduced, and the construction period is greatly shortened, so that the construction cost is indirectly reduced.
The second purpose of the invention is realized by the following steps: the utility model provides a jacking device for earthing oil tank construction, is including founding and establishing stand on the steel storage tank bottoms and the electric block who installs in the stand upper end, the length of stand is higher than the total height of the steel storage tank jar body.
And an inclined strut is also connected between the upright column and the bottom of the steel storage tank.
The third purpose of the invention is realized by the following steps: a use method of a jacking device for construction of a soil-covered oil tank comprises the following steps:
a. splicing and welding the steel storage tank in the solidified concrete tank, firstly splicing and welding the bottom of the steel storage tank in the middle of the bottom in the concrete tank;
b. after the tank bottom of the steel storage tank is welded, uniformly distributing a plurality of jacking devices on the periphery of the tank bottom of the steel storage tank;
c. adjusting electric hoists on the upright columns of the jacking devices to enable the electric hoists to be consistent in set height, and then electrically connecting the electric hoists on the jacking devices with the same controller;
d. the method comprises the following steps that a circle of side wall of a steel storage tank is welded in a concrete tank in a splicing mode through a side wall splicing and welding assembly, the side wall of the steel storage tank surrounds the outer side of a jacking device, the top of the steel storage tank is welded on the uppermost circle of side wall of the spliced and welded steel storage tank, and a skylight for the jacking device to extend outwards and a manhole for a worker to pass through are reserved on the top of the steel storage tank;
e. welding a plurality of lifting lugs for hanging and connecting an electric hoist lifting hook on the inner side wall of the uppermost circle of the steel storage tank, wherein the positions of the lifting lugs are opposite to the positions of the stand columns and are arranged at the same height;
f. the electric hoist is opened and closed through the controller, so that the electric hoist releases the steel cable with the corresponding length, and a lifting hook on the steel cable of the electric hoist is hooked on the lifting lug of the uppermost circle of the steel storage tank; starting the electric hoist through the controller, integrally lifting the side wall of the uppermost circle of the steel storage tank welded with the tank top until the welding work of the side wall of the circle positioned at the lower part of the side wall of the uppermost circle of the steel storage tank can be carried out, closing the electric hoist through the controller, and welding the lower edge of the side wall of the uppermost circle and the upper edge of the side wall of the circle positioned at the lower part of the side wall of the uppermost circle;
g. repeating the steps e to f until the tailor welding work of the side wall of the steel storage tank is completed;
h. after the welding of the lateral wall of the steel storage tank is completed, the lower edge of the lateral wall of the steel storage tank and the edge of the bottom of the steel storage tank are welded together, then the jacking device is dismantled and transported away, and finally, the skylight and the manhole of the steel storage tank are welded and sealed, namely, the welding work of the whole steel storage tank is completed.
The distance between the wall of the common soil covering steel storage tank and the side wall of the concrete tank is only 0.9m, the distance between the top of the steel storage tank and the top space of a tank room is only 1.8m, the construction space is narrow, great difficulty is brought to the hoisting and tailor welding of steel plates of the steel storage tank, and the construction progress of the soil covering steel storage tank is slow. According to the invention, the plurality of upright columns are distributed in the steel storage tank, the electric hoist is arranged on the upright columns, and the steel storage tank is lifted to the required height by the electric hoist, so that the tailor-welding work of the outer wall of the steel storage tank at the tank bottom is facilitated for workers. The invention not only occupies small space, but also reduces the labor intensity of the working personnel. The method is convenient to operate, and can effectively improve the efficiency of splicing and welding the steel storage tank in the concrete tank, thereby shortening the construction period of the soil-covered steel storage tank.
Drawings
Figure 1 is a schematic diagram of the construction of a casing tank.
Fig. 2 is a schematic structural view of the jacking device.
Fig. 3 is a schematic view of a jacking device in use.
In the figure: 1. a steel storage tank sidewall; 2. lifting lugs; 3. an electric hoist; 4. a column; 5. bracing; 6. a jacking device; 7. the top of the steel storage tank; 8. a concrete tank; 9. and (5) a steel storage tank.
Detailed Description
Example 1: a construction method of a soil-covered oil tank.
As shown in fig. 1, the earth-covering oil tank includes a concrete tank 8 and a steel storage tank 9 provided in the concrete tank 8. The construction method of the earthing oil tank comprises the following steps:
a. a pit for construction and burying of the earth-covering oil tank is dug down on the ground in a planned area, and the cross-sectional area of the pit is larger than that of the earth-covering oil tank, so that workers can conveniently operate and construct around the earth-covering oil tank in the pit. And then a concrete platform is poured in the middle area of the bottom of the pit to be used as the bottom of the concrete tank 8.
b. After the concrete platform is solidified, hanging a tailor-welded assembly for manufacturing a steel storage tank side wall 1 of a steel storage tank 9 and a steel storage tank top 7 on the concrete platform, upwards building a pouring template for pouring a tank wall and a tank top of a concrete tank 8 along the edge of the concrete platform, meanwhile, embedding a steel reinforcement framework in a built tank wall and tank top pouring area, reserving a temporary entrance and exit opening at the lower part of the tank wall of the concrete tank 8 for construction personnel to pass through, then pouring concrete in the pouring area, and forming a closed concrete tank 8 capable of accommodating the steel storage tank 9 by matching with a tank bottom after the concrete is solidified.
c. And after the concrete tank 8 is solidified, all the concrete pouring templates are dismantled, transported out of the tank and lifted out of the pit.
d. The bottom of a steel storage tank 9 is welded on the bottom of the concrete tank 8 by using the hung side wall tailor-welding assembly, and the bottom of the steel storage tank 9 is centrally positioned on the bottom of the concrete tank 8; a plurality of jacking devices 6 are arranged on the bottom of the steel storage tank 9 along the periphery of the bottom, as shown in figure 2, each jacking device 6 comprises a vertical column 4 with the length larger than the total height of the steel storage tank 9 and an electric hoist 3 arranged at the upper end of the vertical column 4, the lower end of the vertical column 4 is fixed on the bottom of the steel storage tank 9, and an inclined strut 5 is connected between the vertical column 4 and the bottom of the steel storage tank 9 in order to prevent the vertical column 4 from toppling.
e. And then, a circle of steel storage tank side wall 1 of the steel storage tank 9 is welded in the concrete tank by the hung side wall tailor-welding component, the steel storage tank side wall 1 surrounds the outer side of the jacking device 6, a steel storage tank top 7 is welded above the uppermost circle of side wall of the steel storage tank 9 by the hung tank top tailor-welding component, and a skylight for the jacking device 6 to extend outwards and a manhole for people to enter and exit are reserved on the tank top tailor-welding component.
f. After the top 7 of the steel storage tank and the side wall of the uppermost circle are welded, the steel storage tank is lifted by the jacking device 6, the side wall of the other circle of steel storage tank 9 is welded at the lower part of the steel storage tank, and the upper edge of the side wall of the lower circle and the lower edge of the side wall of the upper circle are welded together.
g. And e, repeating the step e until the side wall of the lowest circle is welded, and welding the lower edge of the side wall of the lowest circle and the edge of the bottom of the steel storage tank 9 mutually.
h. And (3) dismantling each jacking device 6 in the steel storage tank body, conveying out of the tank through a manhole of the steel storage tank 9 and a temporary access of the side wall of the concrete tank 8, and lifting out of the pit.
i. And (3) respectively welding and sealing the reserved skylight and the manhole on the steel storage tank 9, and sealing the temporary access of the concrete tank 8 with concrete, namely completing the construction of the earth-covered oil tank.
Example 2: a jacking device for construction of a soil covering oil tank.
As shown in figure 2, the jacking device 6 for the construction of the earth-covered oil tank comprises a vertical column 4 vertically arranged on the bottom of the steel storage tank 9 and an electric hoist arranged at the upper end of the vertical column 4, wherein the length of the vertical column 4 is higher than the total height of the tank body of the steel storage tank 9.
Example 3: a using method of a jacking device for construction of a soil-covered oil tank.
As shown in fig. 3, a method for using a jacking device for construction of a soil-covered oil tank is characterized by comprising the following steps:
a. firstly, welding the bottom of the steel storage tank 9 in the middle of the bottom in the poured concrete tank 8.
b. After the tank bottom of the steel storage tank 9 is welded, a plurality of jacking devices 6 are uniformly distributed on the periphery of the tank bottom of the steel storage tank 9.
c. The electric hoist 3 on the stand 4 of the adjusting jacking device 6 makes the setting height of the electric hoist 3 consistent, and then the electric hoists 3 on the plurality of jacking devices 6 are electrically connected with the same controller.
d. Utilize lateral wall tailor-welded subassembly tailor-welded the lateral wall of round steel storage tank 9 in concrete tank 8, the lateral wall of steel storage tank 9 encircles in the outside of jacking device 6, and tailor-welded steel storage tank deck 7 on the top round lateral wall of tailor-welded steel storage tank 9 leaves the skylight that supplies jacking device 6 to outwards extend and the manhole that supplies the builder to pass through on the tank deck.
e. A plurality of lifting lugs 2 used for hanging the lifting hook of the electric hoist are welded on the inner side wall of the uppermost circle of the steel storage tank 9, and the positions of the lifting lugs 2 are opposite to the positions of the upright posts 4 and are arranged at the same height.
f. The electric hoist 3 is opened and closed through the controller, the electric hoist 3 releases the steel cable with the corresponding length, and a lifting hook on the steel cable of the electric hoist 3 is hooked on the lifting lug 2 on the uppermost circle of the steel storage tank 9; the electric hoist 3 is started through the controller, the side wall of the uppermost circle of the steel storage tank 9 welded with the tank top is raised integrally until the welding work of the circle of the side wall of the lower part of the uppermost circle of the side wall of the steel storage tank 9 can be carried out, the electric hoist 3 is closed through the controller, and the lower edge of the uppermost circle of the side wall and the upper edge of the circle of the side wall of the lower part of the uppermost circle of the side wall are welded together.
g. Repeating the steps e to f until the tailor welding work of the side wall 7 of the steel storage tank is completed;
h. after the welding of 7 pieces of steel storage tank lateral walls is accomplished, with the lateral wall of steel storage tank 9 down along with the border piece welding of the tank bottoms of steel storage tank 9 together, demolish jacking device 6 again to transport out the jar outside and hang out the pit through the manhole of the steel storage tank 9 jar body and the interim access & exit of 8 jar side walls of concrete jar, at last with the skylight and the manhole welding of steel storage tank 9 and seal up, accomplish the welding work of whole steel storage tank 9 promptly.
Claims (5)
1. A construction method of an earth-covered oil tank is characterized by comprising the following steps:
a. digging a pit downwards on the ground of a construction area for construction operation and embedding of a soil covering oil tank, and pouring a concrete platform in the middle of the bottom surface of the pit to serve as the bottom of the concrete tank;
b. after the concrete platform is solidified, hanging a tailor-welded assembly for manufacturing the side wall and the top of the steel storage tank on the concrete platform, and upwards building a pouring template for pouring the tank wall and the tank top of the concrete tank along the edge of the concrete platform;
c. removing all the concrete pouring templates, transporting out of the tank and lifting out of the pit;
d. the bottom of a steel storage tank is welded on the bottom of the concrete tank by using the hung side wall tailor-welding assembly, and the bottom of the steel storage tank is centrally positioned on the bottom of the concrete tank; arranging a plurality of jacking devices on the bottom of the steel storage tank along the periphery of the bottom, wherein each jacking device comprises a vertical column with the length being greater than the total height of the steel storage tank body and an electric hoist arranged at the upper end of the vertical column, and the lower end of the vertical column is fixed on the bottom of the steel storage tank;
e. welding a circle of side wall of the steel storage tank in the concrete tank by using the hung side wall tailor-welding assembly, wherein the side wall of the steel storage tank surrounds the outer side of the jacking device, welding the tank top of the steel storage tank above the uppermost circle of side wall of the steel storage tank by using the hung tank top tailor-welding assembly, and reserving a skylight for the jacking device to extend outwards and a manhole for people to enter and exit on the tank top tailor-welding assembly;
f. after the top of the steel storage tank and the uppermost circle of side wall are welded, the steel storage tank is lifted by using a lifting device, the lower part of the steel storage tank is welded with the side wall of another circle of steel storage tank, and the upper edge of the side wall of the lower circle and the lower edge of the side wall of the upper circle are welded together;
g. repeating the step f until the side wall of the lowest circle is welded, and welding the lower edge of the side wall of the lowest circle and the edge of the bottom of the steel storage tank together;
h. dismantling each jacking device in the steel storage tank body, transporting out of the tank through a manhole of the steel storage tank body and a temporary access of the side wall of the concrete tank body, and lifting out of a pit;
i. and (3) respectively welding and sealing the reserved skylight and the manhole on the steel storage tank body, and well plugging the temporary access of the concrete tank with concrete, namely completing the construction of the earthing oil tank.
2. The construction method of the earthing oil tank of claim 1, wherein an inclined strut is further connected between the upright column of the jacking device and the bottom of the steel storage tank.
3. The utility model provides a jacking device for earthing oil tank construction, characterized by is including founding establish stand on the steel storage tank bottoms and the electric block who installs in the stand upper end, the length of stand is higher than the total height of the steel storage tank jar body.
4. The jacking device for the construction of the earthing oil tank as claimed in claim 3, wherein an inclined strut is further connected between the upright column and the bottom of the steel storage tank.
5. A using method of a jacking device for construction of a soil-covered oil tank is characterized by comprising the following steps:
a. splicing and welding the steel storage tank in the solidified concrete tank, firstly splicing and welding the bottom of the steel storage tank in the middle of the bottom in the concrete tank;
b. after the tank bottom of the steel storage tank is welded, uniformly distributing a plurality of jacking devices on the periphery of the tank bottom of the steel storage tank;
c. adjusting electric hoists on the upright columns of the jacking devices to enable the electric hoists to be consistent in set height, and then electrically connecting the electric hoists on the jacking devices with the same controller;
d. the method comprises the following steps that a circle of side wall of a steel storage tank is welded in a concrete tank in a splicing mode through a side wall splicing and welding assembly, the side wall of the steel storage tank surrounds the outer side of a jacking device, the top of the steel storage tank is welded on the uppermost circle of side wall of the spliced and welded steel storage tank, and a skylight for the jacking device to extend outwards and a manhole for a worker to pass through are reserved on the top of the steel storage tank;
e. welding a plurality of lifting lugs for hanging and connecting an electric hoist lifting hook on the inner side wall of the uppermost circle of the steel storage tank, wherein the positions of the lifting lugs are opposite to the positions of the stand columns and are arranged at the same height;
f. the electric hoist is opened and closed through the controller, so that the electric hoist releases the steel cable with the corresponding length, and a lifting hook on the steel cable of the electric hoist is hooked on the lifting lug of the uppermost circle of the steel storage tank; starting the electric hoist through the controller, integrally lifting the side wall of the uppermost circle of the steel storage tank welded with the tank top until the welding work of the side wall of the circle positioned at the lower part of the side wall of the uppermost circle of the steel storage tank can be carried out, closing the electric hoist through the controller, and welding the lower edge of the side wall of the uppermost circle and the upper edge of the side wall of the circle positioned at the lower part of the side wall of the uppermost circle;
g. repeating the steps e to f until the tailor welding work of the side wall of the steel storage tank is completed;
h. after the welding of the lateral wall of the steel storage tank is completed, the lower edge of the lateral wall of the steel storage tank and the edge of the bottom of the steel storage tank are welded together, then the jacking device is dismantled and transported away, and finally, the skylight and the manhole of the steel storage tank are welded and sealed, namely, the welding work of the whole steel storage tank is completed.
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| CN112360182A (en) * | 2020-12-02 | 2021-02-12 | 中国二十冶集团有限公司 | Bottom changing construction method for oil tank in cave depot |
| CN114922489A (en) * | 2022-05-13 | 2022-08-19 | 中化二建集团有限公司 | Modular construction method of large-diameter centrum equipment |
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Application publication date: 20200324 |