CN112144905A - Waste coal storage bin reinforcing method - Google Patents
Waste coal storage bin reinforcing method Download PDFInfo
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- CN112144905A CN112144905A CN202011001322.XA CN202011001322A CN112144905A CN 112144905 A CN112144905 A CN 112144905A CN 202011001322 A CN202011001322 A CN 202011001322A CN 112144905 A CN112144905 A CN 112144905A
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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
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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- E—FIXED CONSTRUCTIONS
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- 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
- E04H7/22—Containers for fluent solids, e.g. silos, bunkers; Supports therefor
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Abstract
The waste coal bunker reinforcing method is designed by performing layer-adding reinforcing modification on the structure of the existing waste coal bunker, and belongs to the technical field of structure reinforcement; the waste coal storage bin reinforcing device comprises an elevator roof room, a layer-adding outer ring beam, a reinforcing inner ring beam I, a reinforcing inner ring beam II, a reinforcing inner ring beam III, a reinforcing radiation beam, a reinforcing floor, an elevator shaft wall and an elevator shaft foundation to form a layer-adding reinforcing system; the elevator roof room is arranged in the center of the upper surface of the original coal bunker top surface structure and is fixedly connected with the coal bunker top surface structure in a sealing mode; the added-layer outer ring beam and the reinforced inner ring beam I are respectively arranged on two sides of the original coal bunker wall structure and are tightly fixed and connected with the original coal bunker wall structure into a whole; the elevator shaft wall is arranged in the middle of the coal storage bin structure; the invention has the advantages that after the waste coal storage bin is reinforced by adding layers, the appearance of the original coal storage bin is kept, and the internal use space can be effectively increased.
Description
Technical Field
The invention relates to a waste coal bunker reinforcing method, which is designed by performing layer-adding reinforcing transformation on the structure of the existing waste coal bunker and belongs to the technical field of structure reinforcement.
Background
The coal is mined from the underground, and the mined coal needs to be lifted to the ground and then transported to various places for use; in order to facilitate rapid loading and transportation, the coal lifted to the ground from the underground is conveyed to a coal storage bin for storage, and when the coal needs to be transported out, the coal is loaded into a train or an automobile from the coal storage bin through a discharging device; after underground coal is mined, coal mining facilities including a coal storage bin lose values, and if the underground coal is not dismantled, the conversion function is needed; the prior art processes the waste coal mines (including coal storage bins) by adopting a dismantling method, the dismantling of the coal storage bins needs to consume a large amount of manpower, material resources and financial resources, also needs to generate a large amount of building garbage and dust, also generates noise pollution, and also destroys social culture as a period; if the coal storage bin is reserved, the dismantling cost can be saved, the pollution is reduced, necessary industrial social cultural witnesses are reserved, and the space of the coal storage bin can be fully utilized to serve as facilities such as warehouses, storerooms and the like, so that the waste can be fully and reasonably applied;
the waste coal bunker reinforcing method provided by the invention can solve the problems.
Principle of the invention
The primary problem of reinforcing the interlayer of the coal storage bin is the safety problem, and the safety in use can be ensured only by ensuring reliable force transmission and reducing the load of the original force transmission structure; in the overall view, the coal storage bin (figures 3 and 4) is a bearing container with a cylindrical upper part and a conical lower part, the load of coal in the coal storage bin is borne by the wall of the coal storage bin, and the load of the coal storage bin is transferred to the foundation through the original ring beam of the coal storage bin, the bearing column of the coal storage bin and the original bearing column foundation of the coal storage bin; the sum of the layered reinforcement facility and the load during use is smaller than the coal load during full load; the load of about 1/2 in use is borne by the newly added elevator shaft wall, so that the safety guarantee is further increased;
locally, the coal storage bin is added with layers (shown in figures 1 and 2), so that the rigidity of the coal storage bin can be increased, and the integrity is better; the newly added floors are all provided with an outer ring beam for adding the floors, a first reinforced inner ring beam, a second reinforced inner ring beam, a third reinforced inner ring beam, a reinforced radiation beam and a reinforced floor, so that the floor load of the reinforced floor is transmitted to the elevator shaft wall and the coal bunker bearing column through the reinforced radiation beam and enters the foundation; the arrangement of the added-layer outer ring beam and the reinforced inner ring beam mainly enables the original coal bunker wall structure to be symmetrically reinforced, and enables the main stress components of the coal bunker to be reinforced or reduced in load on the whole.
Disclosure of Invention
Old and useless coal bunker reinforcing apparatus includes and adds elevator roofing room and ventilation facility at original coal bunker top surface structural, adds a plurality of outer ring beams in layer in the outside of former coal bunker top surface structure, adds a plurality of layer parts including reinforcement inner ring roof beam one, reinforcement inner ring roof beam two, reinforcement inner ring roof beam three, reinforcement radiation beam, reinforcement floor and the elevator wall of a well in the inside of former coal bunker top surface structure, adds the elevartor shaft basis in the lower part of the elevator wall of a well.
The elevator roof room is a place for installing an elevator lifting device and is arranged in the center of the upper surface of the original coal bunker top surface structure and is fixedly connected with the original coal bunker top surface structure in a sealing mode; preferentially recommending that the elevator roof room is surrounded by four walls with the length of 2 meters, the thickness of 240 millimeters and the height of 2.5 meters to form a space, reserving a hole with the height of 2 meters and the width of 1 meter on the wall on one side with the design requirement, and arranging an anti-theft door; the top surface of the wall body is provided with a reinforced concrete roof with the thickness of 200 mm, the roof extends out of the wall body by 300 mm, and waterproof and drainage facilities are arranged; a hole is reserved below a space enclosed by a wall body, namely the middle of the upper surface of the original coal bunker top surface structure, the size of the hole is provided by an elevator supplier, guard rails with the height not less than 900 mm are vertically arranged around the hole, the guard rails are preferably composed of guard rails and handrails, the guard rails are made of stainless steel pipes with the diameter of 30-40 mm and horizontally arranged at the top ends of the guard rails, the guard rails are made of steel bars with the diameter of 12-14 mm, the distance between the guard rails is 150 mm and 200 mm, the lower ends of the guard rails are arranged on the ground, and the upper ends of the guard rails are firmly welded with; the elevator hoisting equipment is installed at the middle part in the roof structure chamber, passes through a steel wire rope and is connected with the top of the elevator through a hole penetrating through the top surface structure of the raw coal bin, and the steel wire rope of the elevator runs in the range surrounded by the protective fence.
The outer ring beam with the additional layer, the first reinforcing inner ring beam and the second reinforcing inner ring beam are beam body structures with the same radian as the coal bunker wall structure, and are preferably made of I-shaped steel, the second reinforcing inner ring beam is made of No. 20I-shaped steel except 14I-shaped steel, and the radian of a web plate of the I-shaped steel is consistent with that of the coal bunker wall structure; the outer ring beam and the first reinforcing inner ring beam are respectively arranged on the inner side and the outer side of the coal bunker wall structure at each layer of layering part, and are fixed into a whole through a reinforcing steel bar with the diameter of 30 mm penetrating through the coal bunker wall structure, and two ends of the reinforcing steel bar penetrate into the structure of the coal bunker bearing column to be connected with the coal bunker bearing column into a whole; the two arc ends of the added-layer outer ring beam and the reinforced inner ring beam I are fixedly connected with the original bearing column of the coal bunker into a whole; the second reinforced inner ring beam is arranged in the middle of the first reinforced inner ring beam and the third reinforced inner ring beam, and the second reinforced inner ring beam and the third reinforced inner ring beam are vertically connected into a whole.
The third reinforced inner ring beam preferably adopts a rectangular ring beam which is made of 20I-steel and has a rectangular section, and the size of the rectangle surrounded by the ring beam is the same as that of the section of the elevator shaft wall; and the third reinforced inner ring beam is arranged at the intersection part of the elevator shaft wall and the reinforced floor.
The reinforced radiation beam is a beam body structure for connecting the elevator shaft wall with the coal bunker bearing column, the outer ring beam for adding a layer, the first reinforced inner ring beam, the second reinforced inner ring beam, the third reinforced inner ring beam and the reinforced floor, and the connecting parts of the reinforced radiation beam and each connecting part are all consolidated; preferentially, the reinforcing radiation beam is made of 20 # I-steel, one end of the reinforcing radiation beam is arranged at the joint of the reinforcing inner ring beam I and the coal bunker bearing column and is fixedly connected with the joint, and one end of the reinforcing radiation beam is arranged on the reinforcing inner ring beam III and is fixedly connected with the elevator shaft wall through the reinforcing inner ring beam III; the reinforced floor is arranged on and fixedly connected with the top of the outer ring beam of the additional layer, the first reinforced inner ring beam, the second reinforced inner ring beam, the third reinforced inner ring beam and the reinforced radiation beam; the elevator shaft wall is arranged in the middle of the original coal bunker wall structure and the original coal bunker inclined plane structure and corresponds to the position of the elevator roof room.
The elevator shaft foundation is a connecting part of the elevator shaft wall and the foundation, the upper part of the elevator shaft foundation is tightly fixed with the elevator shaft wall, and the lower part of the elevator shaft foundation is tightly connected with the foundation in the foundation pit.
The reinforced floor is a ground structure with a structure added with a layer, preferably made of cast-in-place reinforced concrete with the thickness of 200 mm, and is arranged on the first reinforced inner ring beam, the second reinforced inner ring beam and the reinforced radiation beam and is integrally fixed with the upper surfaces of the first reinforced inner ring beam, the second reinforced inner ring beam and the reinforced radiation beam.
The elevator shaft wall is an enclosure structure of an elevator shaft, cast-in-place reinforced concrete with the length of 2 meters on four sides, the thickness of 200 millimeters and the height of added layers is preferably adopted for manufacturing, a third reinforced inner ring beam is arranged at the top of each layer of elevator shaft wall, and the bottom of a lower flange of the third reinforced inner ring beam is fixedly connected with a steel bar of the elevator shaft wall; the elevator shaft walls which are vertically crossed enclose an elevator shaft with a cylindrical structure in the middle of the waste coal storage bin, and a reserved door opening is reserved on one elevator shaft wall of each floor in the same direction to install an elevator door.
The elevator shaft foundation is a component for transferring the load on the wall of the elevator shaft to the foundation; the elevator shaft foundation consists of a foundation bottom plate and a foundation wall plate; the foundation wall plate is located below the elevator shaft wall and is in seamless connection with the elevator shaft wall, the foundation bottom plate is located below the foundation wall plate and is made of cast-in-place reinforced concrete with the four sides being 2 meters long, 200 meters thick and the height being 2 meters high, the foundation bottom plate and the foundation wall plate are vertically arranged and are made of cast-in-place reinforced concrete with the length and width being 2400 millimeters thick and 300-plus-500 millimeters thick, the foundation bottom plate and the elevator shaft wall are symmetrically and vertically intersected, the upper surface of the foundation bottom plate is in seamless connection with the foundation wall plate, and the lower surface of the foundation bottom plate is.
The waste coal bunker reinforcing method comprises the steps of firstly dismantling the coal unloading device, arranging the original coal bunker inclined plane structure, and horizontally cutting and aligning the reinforced concrete of the part of the lower opening of the original coal bunker inclined plane structure, which obstructs the construction of the elevator shaft, so that the construction of the elevator shaft is facilitated; paying off and digging grooves at the foundation part of the elevator shaft, wherein the size of the horizontal plane of each groove is 3 meters in side length, and the depth of each groove is 2.4-2.6 meters, so that the size and the depth of each groove are suitable for the construction of the elevator shaft foundation; after the groove is tested, a plain concrete foundation cushion layer with the thickness of 100 mm is poured, after 12 hours, an elevator shaft foundation is constructed, ribs, supporting molds and concrete are tied to the elevator shaft foundation, the elevator shaft foundation is subjected to acceptance inspection after the molds are removed, and the outer side of a foundation wall plate of the elevator shaft foundation is backfilled; constructing an elevator shaft wall and a third reinforced inner ring beam in a layered manner, wherein the construction of each layer of the elevator shaft wall is carried out according to the sequence of reinforcing bars, formwork supporting and concrete pouring, a layer-added outer ring beam, a layer-added inner ring beam I, a layer-added inner ring beam II, a layer-added inner ring beam III and a layer-added radiation beam are manufactured in a factory and then transported to the site for installation, and a layer-added outer ring beam, a layer-added inner ring beam I and a layer-added inner ring beam II are manufactured into corresponding arc beams according to design requirements; the third reinforced inner ring beam is accurately positioned and installed when the reinforcing steel bars are installed, and is respectively spot-welded with adjacent stirrups and main reinforcements after the third reinforced inner ring beam is accurately positioned, so that the elevator shaft wall and the third reinforced inner ring beam are integrated; then, constructing a layer-adding outer ring beam, a reinforced inner ring beam I, a reinforced inner ring beam II, a reinforced radiation beam and a reinforced floor from bottom to top in a layering manner; before the first construction of the first additional-layer outer ring beam and the first reinforcing inner ring beam, a hole is punched in the original coal bunker wall structure, the diameter of the hole is 32 mm, the center distance between the holes is 300 mm, the hole is positioned in the middle of the web plate of the first additional-layer outer ring beam and the first reinforcing inner ring beam, a reinforcing steel bar with the diameter of 30 mm penetrates through the original coal bunker wall structure, and two ends of the reinforcing steel bar with the diameter of 30 mm are firmly welded with the web plate of the first additional-layer outer ring beam and the first reinforcing inner ring; removing a reinforcing steel bar protection layer in the structure of the coal bunker bearing column at two ends of the added-layer outer ring beam and the reinforced inner ring beam, and welding two ends of the added-layer outer ring beam and the reinforced inner ring beam on the main structural steel bar of the original coal bunker bearing column to integrate the added-layer outer ring beam and the reinforced inner ring beam with the original coal bunker wall structure and the original coal bunker bearing column; mounting a reinforced radiation beam, firmly welding one end of the reinforced radiation beam with one end of a reinforced inner ring beam III, and welding the other end of the reinforced radiation beam on a main structural rib of a bearing column of the original coal bunker; installing a second reinforced inner ring beam, and respectively welding two ends of the second reinforced inner ring beam on a web plate and an upper flange plate of the reinforced radiant beam; and installing a template for reinforcing the floor, reinforcing steel bars, a template for adding the outer ring beam, a template for reinforcing the inner ring beam and an interface template of the elevator shaft wall, blocking the gaps of the templates, and pouring concrete after the acceptance is qualified.
Circularly constructing according to the sequence and the requirements until the construction of the layer-adding reinforced structure is finished; meanwhile, the elevator roof room is constructed in the center of the upper surface of the original coal bunker top surface structure and the coal bunker top surface structure, so that the wall of the elevator roof room and the wall of the construction elevator shaft are on the same axis.
The invention has the advantages that after the waste coal storage bin is reinforced by adding layers, the appearance of the original coal storage bin is kept, and the internal use space can be effectively increased.
Drawings
FIG. 1 is a sectional view of a waste coal bunker reinforcing apparatus 2-2;
FIG. 2 is a sectional view of a waste coal bunker reinforcing apparatus 1-1;
FIG. 3 is a schematic view of a spent coal bunker;
FIG. 4 is a sectional view of the waste coal bunker 3-3.
In the figure: 1-waste coal bunker reinforcement facilities; 11-elevator roof room; 12-adding a layer of outer ring beam; 13-reinforcing the first inner ring beam; 14-reinforcing an inner ring beam II; 15-reinforcing an inner ring beam III; 16-reinforcing the radiation beam; 17-reinforcing the floor; 18-elevator shaft wall; 19-elevator shaft foundation; 110-ventilation facilities; 2-original facilities of the waste coal storage bunker; 21-original coal bunker top surface structure; 22-original coal bunker wall structure; 23-original coal bunker slope structure; 24-original coal bunker bearing column; 25-original coal bunker bearing column foundation; 26-original coal bunker ring beam; 27-feed inlet. 3-feeding belt conveyor; 4-a coal unloading device; 41-a discharge hopper; 42-control valve.
Detailed Description
Examples
A certain industrial coal mining area is provided with 3 parallel coal storage bins, the original facility of each coal storage bin (shown in figures 3 and 4) comprises an original coal bin top surface structure 21, an original coal bin wall structure 22, an original coal bin inclined surface structure 23, an original coal bin bearing column 24, an original coal bin bearing column foundation 25, an original coal bin ring beam 26 and a feed inlet 27, and the associated equipment comprises a feeding belt conveyor 3 and a coal unloading device 4; wherein, the coal unloading device 4 comprises a discharge hopper 41 and a control valve 42;
the top surface elevation of the original coal bunker top surface structure 21 is 50.5 meters, the diameter of the original coal bunker top surface structure 21 is 36 meters, and the thickness of the original coal bunker top surface structure 21 is 400 millimeters, and the original coal bunker top surface structure is made of reinforced concrete;
the original coal bunker wall structure 22 is a reinforced concrete cylinder with the outer diameter of 36 meters and the inner diameter of 34.8 meters, and the original coal bunker wall structure 22 and the original coal bunker bearing column 24 are fixedly connected into a whole through 4 original coal bunker ring beams 26;
the original coal bunker slope structure 23 is an inverted cone with an upper opening outer diameter of 36 meters, an upper opening inner diameter of 34.8 meters, a lower opening outer diameter of 4 meters and a lower opening inner diameter of 3.2 meters, and a coal unloading device 4 arranged at the lower opening comprises a discharge hopper 41 and a control valve 42; the height of the upper opening is 10 meters, and the height of the lower opening is 6.8 meters;
the original coal bunker load-bearing columns 24 are 8 uniformly distributed reinforced concrete columns which are wound around the original coal bunker wall structure 22 and have the cross sections of 2.4 meters, the widths of 1.6 meters and the column length of 51 meters;
the original coal bunker ring beam 26 is 4 reinforced concrete ring beams which are uniformly distributed on the original coal bunker wall structure 22 and comprise top ends and lower ends, the outer diameter of the beam is 37.2 meters, and the inner diameter of the beam is 34.8 meters.
The waste coal storage bin reinforcing device shown in fig. 1 and 2 comprises a lift roof room 11, a layered outer ring beam 12, a reinforced inner ring beam 13, a reinforced inner ring beam 14, a reinforced inner ring beam three 15, a reinforced radiation beam 16, a reinforced floor 17, a lift shaft wall 18, a lift shaft foundation 19 and a ventilation facility 110 to form a layered reinforcing system.
The elevator roof room 11 is a place for installing an elevator lifting device and is arranged in the center of the upper surface of the original coal bunker top surface structure 21 and is fixedly connected with the coal bunker top surface structure 21 in a sealing mode; the elevator roof room 11 is surrounded by four walls with the length of 2 meters, the thickness of 240 millimeters and the height of 2.5 meters to form a space, a hole with the height of 2 meters and the width of 1 meter is reserved on the wall on the south side, a security door is arranged, and a reinforced concrete roof with the thickness of 200 millimeters is arranged on the top surface of the wall; the coal bunker roof structure is characterized in that a hole is reserved below a space enclosed by walls, namely in the middle of the upper surface of an original coal bunker roof structure 21, the size of the hole is provided by an elevator supplier, guard rails with the height not less than 900 mm are vertically arranged around the hole, elevator lifting equipment is installed in the middle of the roof structure, the elevator lifting equipment penetrates through the hole of the original coal bunker roof structure 21 through a steel wire rope and is connected with the top of an elevator, and the elevator steel wire rope runs in the range enclosed by the guard rails.
The outer ring beam 12 with the additional layer, the first reinforcing inner ring beam 13 and the second reinforcing inner ring beam 14 are beam body structures with the same radian as the coal bunker wall structure 22, and are preferably made of I-shaped steel, except that the second reinforcing inner ring beam 14 is made of 14 # I-shaped steel, the I-shaped steel is made of 20 # I-shaped steel, and the radian of a web plate of the I-shaped steel is consistent with that of the coal bunker wall structure 22; the outer ring beam 12 and the first reinforcing inner ring beam 13 are respectively arranged on the inner side and the outer side of the coal bunker wall structure 22 at each layer of layering part, and are fixed into a whole by a rod piece penetrating through the coal bunker wall structure 22, and the two ends of the rod piece penetrate into the structure of the coal bunker bearing column 24 to be connected with the coal bunker bearing column 24 into a whole; the two arc ends of the added-layer outer ring beam 12 and the reinforced inner ring beam 13 are fixedly connected with the original coal bunker bearing column 24 into a whole; the second reinforcing inner ring beam 14 is arranged in the middle of the first reinforcing inner ring beam 13 and the third reinforcing inner ring beam 15, and the second reinforcing inner ring beam 14 and the reinforcing radiation beam 16 are vertically connected into a whole.
The third reinforcing inner ring beam 15 is a rectangular ring beam with a rectangular section and made of 20I-steel, and the size of the rectangle surrounded by the ring beam is the same as that of the section of the elevator shaft wall 18; and the third reinforced inner ring beam 15 is arranged at the intersection part of the elevator shaft wall 18 and the reinforced floor 17.
The reinforced radiation beam 16 is a beam body structure for connecting the elevator shaft wall 18 with the coal bunker bearing column 24, the added-layer outer ring beam 12, the reinforced inner ring beam 13, the reinforced inner ring beam 14, the reinforced inner ring beam three 15 and the reinforced floor 17, and the connecting parts of the reinforced radiation beam 16 and each connecting part are all fixedly connected; the reinforcing radiation beam 16 is made of 20-size I-steel, one end of the reinforcing radiation beam 16 is arranged at the joint of the reinforcing inner ring beam I13 and the coal bunker bearing column 24 and is fixedly connected with the joint, and one end of the reinforcing radiation beam 16 is arranged on the reinforcing inner ring beam III 15 and is fixedly connected with the elevator shaft wall 18 through the reinforcing inner ring beam III 15; the reinforced floor 17 is arranged on the tops of the additional layer outer ring beam 12, the reinforced inner ring beam I13, the reinforced inner ring beam II 14, the reinforced inner ring beam III 15 and the reinforced radiation beam 16 and is fixedly connected with the tops of the additional layer outer ring beam, the reinforced inner ring beam I13, the reinforced inner ring beam II 14, the reinforced inner ring beam III and the reinforced radiation beam I16; the elevator shaft wall 18 is arranged in the middle of the original coal bunker wall structure 22 and the original coal bunker inclined plane structure 23 and corresponds to the position of the elevator roof room 11; the elevator shaft foundation 19 is a connecting member between the elevator shaft wall 18 and the foundation, and has an upper portion rigidly fixed to the elevator shaft wall 18 and a lower portion rigidly connected to the foundation in the pit.
The reinforced floor 17 is a ground structure with a structure added layer and is made of cast-in-place reinforced concrete with the thickness of 200 mm, and the reinforced floor 17 is arranged on the reinforced inner ring beam I13, the reinforced inner ring beam II 14 and the reinforced radiation beam 16 and is integrally fixed with the upper surfaces of the reinforced inner ring beam I13, the reinforced inner ring beam II 14 and the reinforced radiation beam 16.
The elevator shaft wall 18 is a surrounding structure of an elevator shaft, and is made of cast-in-place reinforced concrete with the four surfaces being 2 meters long, 200 millimeters thick and the height being added with the layer height, the top of each layer of elevator shaft wall 18 is provided with a third reinforced inner ring beam 15, and the bottom of a lower flange of the third reinforced inner ring beam 15 is fixedly connected with a reinforcing steel bar of the elevator shaft wall 18; the elevator shaft walls 18 which are vertically crossed enclose an elevator shaft with a cylindrical structure in the middle of the waste coal storage bin, and a reserved door opening is reserved on one elevator shaft wall 18 of each layer of the added floor in the same direction for installing an elevator door.
The elevator shaft foundation 19 is a component for transferring the load on the elevator shaft wall 18 to the foundation; the elevator shaft foundation 19 consists of a foundation bottom plate and a foundation wall plate; the foundation wall plate is located below the elevator shaft wall 18 and is in seamless connection with the elevator shaft wall 18, the foundation bottom plate is located below the foundation wall plate, the four sides of the foundation bottom plate are made of cast-in-place reinforced concrete with the length of 2 meters, the thickness of 200 millimeters and the height of 2 meters, the foundation bottom plate and the foundation wall plate are arranged vertically, the length and the width of the foundation bottom plate are made of cast-in-place reinforced concrete with the thickness of 2400 millimeters and the thickness of 300 millimeters, the foundation bottom plate and the elevator shaft wall 18 are symmetrically and vertically intersected, the upper surface of the foundation bottom plate is in seamless connection with.
The waste coal bunker reinforcing method comprises the steps of firstly dismantling the coal unloading device 4, arranging the original coal bunker inclined surface structure 23, and horizontally cutting and aligning the reinforced concrete of the part of the lower opening of the original coal bunker inclined surface structure 23, which obstructs the construction of the elevator shaft, so that the construction of the elevator shaft is facilitated; paying off and digging a groove at the position of the elevator shaft foundation 19, wherein the horizontal dimension of the groove is 3 m in side length and 2.4 m in depth, so that the size and the depth of the groove are suitable for construction of the elevator shaft foundation 19; after the groove is tested, a plain concrete foundation cushion layer with the thickness of 100 mm is poured, the elevator shaft foundation 19 is constructed after 12 hours, the elevator shaft foundation is bound with ribs, supported molds and poured with concrete, the mold is removed and then the acceptance is tested, and the outer side of the foundation wall plate of the elevator shaft foundation 19 is backfilled; constructing an elevator shaft wall 18 and a third reinforced inner ring beam 15 in a layered manner, wherein the elevator shaft wall 18 constructed on each layer is sequentially subjected to reinforcement, formwork supporting and concrete pouring, a layer-added outer ring beam 12, a first reinforced inner ring beam 13, a second reinforced inner ring beam 14, a third reinforced inner ring beam 15 and a reinforced radiation beam 16 are manufactured in a factory and then transported to a field for installation, and the layer-added outer ring beam 12, the first reinforced inner ring beam 13 and the second reinforced inner ring beam 14 are respectively manufactured into corresponding arc-shaped beams according to design requirements; the third reinforced inner ring beam 15 is accurately positioned and installed when the reinforcing steel bars are installed, and the third reinforced inner ring beam 15 is respectively spot-welded with the adjacent stirrups and main reinforcements after being accurately positioned, so that the elevator shaft wall 18 and the third reinforced inner ring beam 15 are integrated; then, constructing an additional outer ring beam 12, a first reinforced inner ring beam 13, a second reinforced inner ring beam 14, a reinforced radiation beam 16 and a reinforced floor 17 from bottom to top in a layering manner; before the construction of the outer ring beam 12 of the additional layer and the first reinforcing inner ring beam 13, a hole is punched in the original coal bunker wall structure 22, the diameter of the hole is 32 mm, the center distance of the hole is 300 mm, the hole is positioned in the middle of the web plates of the outer ring beam 12 of the additional layer and the first reinforcing inner ring beam 13, a reinforcing steel bar with the diameter of 30 mm penetrates through the original coal bunker wall structure 22, and two ends of the reinforcing steel bar with the diameter of 30 mm are firmly welded with the web plates of the outer ring beam 12 of the additional layer and the first reinforcing inner ring beam 13; removing steel bar protection layers in the structures of the coal bunker bearing columns 24 at the two ends of the added-layer outer ring beam 12 and the reinforced inner ring beam 13, and welding the two ends of the added-layer outer ring beam 12 and the reinforced inner ring beam 13 on the main structural ribs of the original coal bunker bearing columns 24 to integrate the added-layer outer ring beam 12, the reinforced inner ring beam 13, the original coal bunker wall structure 22 and the original coal bunker bearing columns 24; installing a reinforced radiation beam 16, firmly welding one end of the reinforced radiation beam 16 and one end of a reinforced inner ring beam III 15, and welding the other end of the reinforced radiation beam 16 on a structural main rib of a bearing column 24 of the raw coal bunker; installing a second reinforcing inner ring beam 14, and respectively welding two ends of the second reinforcing inner ring beam 14 on a web plate and an upper flange plate of a reinforcing radiant beam 16; installing a template for reinforcing the floor 17, reinforcing steel bars, a template for adding the outer ring beam 12, a template for reinforcing the inner ring beam 13 and an interface template for the elevator shaft wall 18, blocking gaps of the templates, and pouring concrete after acceptance inspection is qualified;
circularly constructing according to the sequence and the requirements until the construction of the layer-adding reinforced structure is finished; meanwhile, the elevator roof room 11 is constructed in the center of the upper surface of the original coal bunker top surface structure 21 and on the coal bunker top surface structure 21, so that the wall of the elevator roof room 11 and the wall 18 of the construction elevator shaft are on the same axis.
Claims (8)
1. The waste coal storage bin reinforcing device is characterized by comprising a floor reinforcing system formed by an elevator roof room (11), a floor-adding outer ring beam (12), a reinforcing inner ring beam I (13), a reinforcing inner ring beam II (14), a reinforcing inner ring beam III (15), a reinforcing radiation beam (16), a reinforcing floor (17), an elevator shaft wall (18), an elevator shaft foundation (19) and a ventilation facility (110); the elevator roof room (11) is arranged in the center of the upper surface of the original coal bunker top surface structure (21) and is fixedly connected with the coal bunker top surface structure (21) in a sealing mode; the additional layer outer ring beam (12) and the reinforcing inner ring beam I (13) are respectively arranged on two sides of the original coal bunker wall structure (22) and are tightly fixed and connected with the original coal bunker wall structure (22) into a whole; the two arc ends of the added-layer outer ring beam (12) and the reinforced inner ring beam (13) are fixedly connected with the original coal bunker bearing column (24) into a whole; the second reinforced inner ring beam (14) is arranged in the middle of the first reinforced inner ring beam (13) and the third reinforced inner ring beam (15), and the second reinforced inner ring beam (14) and the reinforced radiation beam (16) are vertically connected into a whole; the third reinforced inner ring beam (15) is arranged at the intersection part of the elevator shaft wall (18) and the reinforced floor (17); one end of the reinforcing radiation beam (16) is arranged at the joint of the reinforcing inner ring beam I (13) and the coal bunker bearing column (24) and is fixedly connected with the joint, and one end of the reinforcing radiation beam (16) is arranged on the reinforcing inner ring beam III (15) and is fixedly connected with the elevator shaft wall (18) through the reinforcing inner ring beam III (15); the reinforced floor (17) is arranged on the tops of the additional layer outer ring beam (12), the reinforced inner ring beam I (13), the reinforced inner ring beam II (14), the reinforced inner ring beam III (15) and the reinforced radiation beam (16) and is fixedly connected with the reinforced outer ring beam, the reinforced inner ring beam II and the reinforced radiation beam III; the elevator shaft wall (18) is arranged in the middle of the original coal bunker wall structure (22) and the original coal bunker inclined plane structure (23) and corresponds to the position of the elevator roof room (11); the elevator shaft foundation (19) is a connecting part of the elevator shaft wall (18) and the foundation, the upper part of the elevator shaft foundation is tightly fixed with the elevator shaft wall (18), and the lower part of the elevator shaft foundation is tightly connected with the foundation in the foundation pit.
2. The waste coal bunker reinforcing device as claimed in claim 1, wherein the terrace roof room (11) is a device for installing an elevator to lift, is arranged on the upper surface of the top surface structure (21) of the raw coal bunker, and consists of four walls, a roof and an access; the middle part of the roof structure is provided with an elevator hoisting device, and the elevator hoisting device passes through a hole of the raw coal bunker top surface structure (21) through a steel wire rope to be connected with the top of the elevator.
3. The waste coal storage bin reinforcing device as claimed in claim 1, wherein the outer-layer added ring beam (12), the first reinforcing inner ring beam (13) and the second reinforcing inner ring beam (14) are beam body structures with the same radian as the coal storage bin wall structure (22); the added-layer outer ring beam (12) and the reinforced inner ring beam I (13) are respectively arranged on the inner side and the outer side of the coal bunker wall structure (22) of each layer, are fixed into a whole through a rod piece penetrating through the coal bunker wall structure (22), and are connected with the coal bunker bearing column (24) into a whole by penetrating the two ends of the rod piece into the structure of the coal bunker bearing column (24); and the third reinforced inner ring beam (15) is a rectangular ring beam with a rectangular section, and the size of the rectangle surrounded by the ring beams is the same as that of the section of the elevator shaft wall (18).
4. The waste coal bunker reinforcing device as claimed in claim 1, wherein the reinforcing radiation beam (16) is a beam body structure for connecting the elevator shaft wall (18) with the coal bunker bearing column (24), the additional outer ring beam (12), the reinforcing inner ring beam I (13), the reinforcing inner ring beam II (14), the reinforcing inner ring beam III (15) and the reinforcing floor (17), and the connecting parts of the reinforcing radiation beam and the connecting parts are all fixedly connected.
5. The waste coal storage bin reinforcing device as claimed in claim 1, wherein the reinforcing floor (17) is a ground structure with a structural layer, is arranged above the reinforcing inner ring beam I (13), the reinforcing inner ring beam II (14) and the reinforcing radiation beam (16), and is integrally fixed with the upper surfaces of the reinforcing inner ring beam I (13), the reinforcing inner ring beam II (14) and the reinforcing radiation beam (16).
6. The waste coal bunker reinforcing device as claimed in claim 1, wherein the elevator shaft wall (18) is an enclosure structure of an elevator shaft, four vertically intersected elevator shaft walls (18) enclose the elevator shaft with a cylindrical structure in the middle of the waste coal bunker, and a reserved door opening is reserved on one elevator shaft wall (18) of each storey in the same direction for installing an elevator door on each storey.
7. The waste coal bunker reinforcing device as claimed in claim 1, wherein the elevator hoistway base (19) is composed of a base bottom plate and a base wall plate, the base wall plate is positioned below the elevator shaft wall (18) and is seamlessly connected with the elevator shaft wall (18), the base bottom plate is positioned below the base wall plate, the upper surface is seamlessly connected with the base wall plate, and the lower surface is seamlessly connected with the foundation.
8. The method for reinforcing the waste coal bunker according to claim 1-7, characterized in that the coal unloading device (4) is removed, and the inclined surface structure (23) of the original coal bunker is arranged to facilitate the construction of the elevator shaft; paying off and digging a groove at the position of the elevator shaft foundation (19) to ensure that the size and the depth of the groove are suitable for the construction of the elevator shaft foundation (19); pouring a foundation cushion layer after groove inspection, constructing an elevator shaft foundation (19), performing inspection and acceptance after formwork removal to backfill the outer side of a foundation wallboard of the elevator shaft foundation (19), constructing an elevator shaft wall (18) and a reinforced inner ring beam III (15) in a layering manner to enable the elevator shaft wall (18) and the reinforced inner ring beam III (15) to be integrated, constructing an additional outer ring beam (12), a reinforced inner ring beam I (13), a reinforced inner ring beam II (14), a reinforced radiation beam (16) and a reinforced floor (17) in a layering manner from bottom to top, constructing the elevator shaft wall (18) and the reinforced inner ring beam III (15), and performing circular construction until the construction of an interlayer reinforced structure is finished; meanwhile, the elevator roof room (11) is constructed on the center of the upper surface of the original coal bunker top surface structure (21) and the coal bunker top surface structure (21), so that the wall of the elevator roof room (11) and the wall (18) of the construction elevator shaft are on the same axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011001322.XA CN112144905A (en) | 2020-09-22 | 2020-09-22 | Waste coal storage bin reinforcing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011001322.XA CN112144905A (en) | 2020-09-22 | 2020-09-22 | Waste coal storage bin reinforcing method |
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| CN112144905A true CN112144905A (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011001322.XA Pending CN112144905A (en) | 2020-09-22 | 2020-09-22 | Waste coal storage bin reinforcing method |
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| CN (1) | CN112144905A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113818716A (en) * | 2021-10-28 | 2021-12-21 | 北京中地恒基建筑工程有限公司 | Construction method for deepening and transforming elevator shaft |
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Application publication date: 20201229 |