CN114961281A - Accumulated lifting construction method for super-large span prestressed arch dry coal shed - Google Patents
Accumulated lifting construction method for super-large span prestressed arch dry coal shed Download PDFInfo
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- CN114961281A CN114961281A CN202210492450.1A CN202210492450A CN114961281A CN 114961281 A CN114961281 A CN 114961281A CN 202210492450 A CN202210492450 A CN 202210492450A CN 114961281 A CN114961281 A CN 114961281A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
- B05B12/18—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area using fluids, e.g. gas streams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0421—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with rotating spray heads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0426—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with spray heads moved along a closed path
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
- B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations
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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
- E04G21/12—Mounting of reinforcing inserts; Prestressing
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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
-
- 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
- E04G21/162—Handles to carry construction blocks
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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
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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
- E04H7/22—Containers for fluent solids, e.g. silos, bunkers; Supports therefor
- E04H7/24—Constructions, with or without perforated walls, depending on the use of specified materials
- E04H7/30—Constructions, with or without perforated walls, depending on the use of specified materials mainly of metal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention provides an accumulative lifting construction method of an overlarge span prestressed arch-shaped dry coal shed, which comprises the following steps: step 1, dividing a dry coal shed into a plurality of construction areas, wherein each construction area is divided into a lifting area, a hoisting area and a post-supplement area; step 2, construction areas at two ends of the dry coal shed respectively comprise gable walls, the gable truss columns, the gable truss beams and the gable main trusses are assembled in a segmented mode, and the gable truss columns, the gable truss beams and the gable main trusses are hoisted in place by a crane respectively; step 3, firstly installing the truss in the hoisting area, then assembling the truss in the lifting area, and then assembling the truss in the hoisting area and the truss in the lifting area; step 4, unloading trusses in a lifting area and a hoisting area, installing a stay cable, and checking and adjusting cable force; and 5, mounting the post-repairing area and the roof panel. The invention aims to provide a construction method for cumulatively lifting an ultra-large span prestressed arched dry coal shed, which is safe, efficient and good in construction quality.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to an accumulative lifting construction method of an ultra-large span prestressed arch-shaped dry coal shed.
Background
The dry coal shed is a large-scale storehouse for storing coal in a thermal power plant, has large structural requirement span and high clear space, meets the requirements of storage and operation space, and has the main structural forms of a planar rigid frame, a planar truss, a planar arch, a cylindrical reticulated shell structure and the like. With the development of the electric power industry in China, the dry coal shed is widely constructed and researched, the traditional dry coal shed is constructed mainly by means of erecting a scaffold and matching the scaffold with a crane, namely the scaffold is erected firstly, and then a truss is hoisted to the top end of the scaffold by the crane to be assembled, the dry coal shed is complex in construction process and long in construction period, and meanwhile, a large amount of high-altitude operation exists in the construction process, so that the dry coal shed is low in construction efficiency and high in construction risk.
Disclosure of Invention
Therefore, the invention aims to solve the problems of low construction efficiency and high construction risk of the dry coal shed in the prior art.
Therefore, the technical scheme is that the invention provides an accumulative lifting construction method of an overlarge span prestressed arch-shaped dry coal shed, which comprises the following steps:
step 1, dividing a dry coal shed into a plurality of construction areas, and dividing each construction area into a lifting area, a hoisting area and a post-supplement area according to different construction modes;
and 5, mounting the post-repairing area and the roof panel.
Preferably, in the step 3,
arranging an assembling area in the dry coal shed, assembling a main truss in the assembling area in a segmented manner, and integrally assembling a secondary truss;
arranging temporary support frames in the dry coal shed, hoisting main trusses, secondary trusses, main purlins and secondary purlins of hoisting areas on two sides of the assembly area, and installing a lifting system at the top of the main trusses;
the lifting area comprises a first lifting area and second lifting areas, the two second lifting areas are respectively positioned at two sides of the first lifting area, a plurality of assembled support frames are arranged in the lifting areas at intervals, a first support frame and a second support frame are respectively arranged in the first lifting area, and lifting systems at the tops of the two support frames are simultaneously arranged;
the method comprises the following steps of adopting a crawler crane to carry out discharging, turning over and lifting on a main truss assembled in sections and an integrally assembled secondary truss, completing assembling work of trusses in a lifting area, simultaneously installing a roof inhaul cable, and then installing a main purline and a secondary purline.
Preferably, in the step 3,
after the assembly of the truss in the lifting area is completed, carrying out first truss lifting, carrying out first folding of the truss after the first lifting is in place, then installing a string stretching cable and a stay bar, and stretching the string stretching cable to a construction calculated value;
and (4) removing the first supporting frame, and then lifting the truss for the second time to complete the second folding.
Preferably, in the step 3,
the support frame includes: a foundation, a tower crane section, a cap head and a lifting steel beam,
the tower crane structure comprises a foundation and is characterized in that a tower crane section is arranged at the top end of the foundation, a cap head is arranged in the tower crane section, a lifting steel beam is arranged on the cap head, lifting equipment is arranged on the lifting steel beam, the lifting steel beam is a lattice truss which can be assembled, and the cross section of the lattice truss is rectangular;
the foundation includes: remove mound, basic tower festival bottom rotates respectively all around and is connected with the removal mound, basic tower festival is provided with the bracing all around respectively, bracing one end with the vertical frame of basic tower festival is connected, the bracing other end with remove the mound with the junction of basic tower festival is connected, the tower crane festival sets up basic tower festival top, basic tower festival both sides are provided with the counter weight respectively.
Preferably, in the step 3,
the bottom end of a main truss in the hoisting area is rotatably connected with a finished product hinged support, an embedded part is arranged below the main truss, and the finished product hinged support is connected with the embedded part through a plurality of connecting lug plates in a welding mode.
Preferably, in the step 4,
after the truss is installed, detecting, unloading the truss in the lifting area after the truss is detected to be qualified, and then removing the temporary support frame and the second support frame;
and installing and tensioning the stay cable, and then checking and adjusting the cable force of the tensioned chord cable and the stay cable.
Preferably, a plurality of displacement sensors are arranged on the truss at intervals, two ends of the lifting area truss are close to one end of the lifting area truss, a plurality of position sensors are arranged at intervals respectively, and a plurality of strain sensors and vibration sensors are arranged on the lifting area truss at intervals.
Preferably, still include the controller, be provided with treater, wireless communication subassembly, charging source in the controller, be provided with display screen and control panel on a controller lateral wall, be provided with the alarm on another lateral wall of controller and the interface that charges, the treater respectively with wireless communication subassembly, charging source, display screen, control panel, alarm electric connection, the wireless communication subassembly respectively with displacement sensor, position sensor, strain sensor, vibration sensor wireless connection, charging source with the interface electric connection that charges.
Preferably, the heat dissipation device further comprises a heat dissipation device, wherein the heat dissipation device comprises: a fixed plate, a driving motor, a first crank and a sweeper,
a heat dissipation port is formed in one side wall of the controller, a filter screen is arranged in the heat dissipation port, a fixed plate is arranged in the controller, two ends of the fixed plate are respectively connected with the inner walls of the same sides of the controller, a driving motor is arranged on the fixed plate, an output shaft of the driving motor is connected with one end of a first crank towards the heat dissipation port, the other end of the first crank is provided with a first gear, one side of the driving motor is provided with a transmission shaft, one end of the transmission shaft penetrates through the fixed plate and is connected with a first rotating plate, the transmission shaft is rotatably connected with the fixed plate, a plurality of first fan blades are arranged on the circumferential outer wall of the first rotating plate at intervals, the other end of the transmission shaft sequentially penetrates through one end of a first swing rod and is connected with a second rotating plate through the axis of a second gear, the transmission shaft is rotatably connected with the first swing rod, and is fixedly connected with the second gear, a plurality of second fan blades are arranged on the circumferential outer wall of the second rotating plate at intervals;
second pendulum rod one end with first crank with the junction of first gear rotates and is connected, the second pendulum rod other end rotates and is connected with the third gear, the third gear is located first gear with between the second gear, the third gear respectively with first gear, second gear intermeshing, the third gear is close to be provided with the brush on the outer wall of one side of thermovent, the brush with the filter screen contacts, the first pendulum rod other end with the second pendulum rod with the junction of third gear rotates and is connected, spring one end with first pendulum rod is connected, the spring other end with the second pendulum rod is connected.
Preferably, the lubricating device further comprises a lubricating maintenance device, and the lubricating maintenance device comprises: a transmission case, a motor, an electric cylinder and an internal gear,
the bottom end of the upper chord main truss in the lifting area is provided with a transmission case, the bottom end of the transmission case is provided with an opening, the inner wall of the top end of the transmission case is provided with an electric cylinder, a piston rod of the electric cylinder is downwards provided with a motor, an output shaft of the motor downwards penetrates through a fixing frame to be connected with one end of a second crank, the top end of the fixing frame is fixedly connected with the motor, the bottom end of the fixing frame is provided with an internal gear, one end of a fixing rod is connected with the other end of the second crank, the other end of the fixing rod sequentially penetrates through a fourth gear axis and a cross-shaped connecting frame axis to be connected with the fixing gear, the fixing rod is respectively rotatably connected with the fourth gear and the cross-shaped connecting frame, the fourth gear is mutually meshed with the internal gear, and the internal gear is fixedly connected with the cross-shaped connecting frame;
the cross-shaped connecting frame rotates respectively all around and is connected with the fifth gear, the fifth gear with fixed gear intermeshing, fifth gear bottom center department is provided with the liquid reserve tank, the transfer line top of vertical setting with the liquid reserve tank intercommunication, the transfer line bottom is provided with the shower nozzle, be provided with the water pump on the transfer line, the fifth gear bottom is provided with the brush, the brush is located the liquid reserve tank outside, each branch top of cross-shaped connecting frame is provided with respectively along axially extended aerofoil.
The technical scheme of the invention has the following advantages: compared with the prior art, the invention changes a large amount of overhead operation into ground operation, and most construction contents are completed on the ground, thereby effectively reducing the overhead operation, reducing the construction difficulty, ensuring the construction safety, improving the construction efficiency, and simultaneously effectively improving the quality control of the construction process and ensuring the construction quality.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a dry coal shed according to the present invention;
FIG. 2 is a pictorial view of a dry coal shed according to the present invention;
FIG. 3 is a sectional view of a dry coal shed construction area according to the present invention;
FIG. 4 is a schematic structural view of a dry coal shed construction area according to the present invention;
FIG. 5 is a view showing the installation of the gable of the dry coal shed according to the present invention;
FIG. 6 is a mounting diagram of a truss in a dry coal shed hoisting area according to the invention;
FIG. 7 is a schematic view of a support according to the present invention;
FIG. 8 is a picture of a truss set of the dry coal shed lifting area of the present invention;
FIG. 9 is a first lifting diagram of a truss in a lifting area of the dry coal shed according to the present invention;
FIG. 10 is a first closing up of the truss in the lifting area of the dry coal shed according to the present invention;
FIG. 11 is a drawing showing the installation of truss string cables in the lifting area of the dry coal shed according to the present invention;
FIG. 12 is a second lift and collapse of the dry coal canopy truss of the present invention;
FIG. 13 is an installation diagram of stay cables of a truss of the dry coal shed according to the present invention;
FIG. 14 is a view of the installation of the rear patch area of the dry coal shed according to the present invention;
FIG. 15 is an installation view of the dry coal shed panel of the present invention;
FIG. 16 is a schematic view of a support frame according to the present invention;
FIG. 17 is a side elevational view of the cage of the present invention;
FIG. 18 is a top view of the support frame of the present invention;
FIG. 19 is a schematic view of the lattice truss structure of the present invention;
FIG. 20 is a cross-sectional view of the lattice truss of the present invention;
FIG. 21 is a view of a sensor installation of the present invention;
FIG. 22 is a schematic diagram of a controller according to the present invention;
FIG. 23 is a schematic view of a heat dissipation device according to the present invention;
FIG. 24 is a side view of the heat sink of the present invention;
FIG. 25 is a schematic view of the lubrication maintenance device of the present invention;
FIG. 26 is an enlarged view of the lubrication servicing device A of the present invention;
wherein, 1-construction area, 2-lifting area, 3-hoisting area, 4-post-repairing area, 5-gable, 6-gable truss column, 7-gable truss girder, 8-gable main truss, 9-roof panel, 10-main truss, 11-secondary truss, 12-temporary support frame, 13-main purline, 14-secondary purline, 15-first lifting area, 16-second lifting area, 17-assembly support frame, 18-first support frame, 19-second support frame, 20-chord cable, 21-stay cable, 22-foundation, 23-tower crane section, 24-cap head, 25-moving pier, 26-foundation tower section, 27-diagonal brace, 28-stay bar, 29-roof cable, 30-finished hinged support, 31-displacement sensor, 32-position sensor, 33-charging interface, 34-strain gauge sensor, 35-vibration sensor, 36-controller, 37-processor, 38-wireless communication component, 39-charging power supply, 40-display screen, 41-control panel, 42-alarm, 43-fixed plate, 44-driving motor, 45-first crank, 46-brush, 47-heat dissipation port, 48-filter screen, 49-first gear, 50-transmission shaft, 51-first rotating plate, 52-first fan blade, 53-first oscillating bar, 54-second gear, 55-second rotating plate, 56-second oscillating bar, 57-third gear, 58-spring, 59-lifting steel beam, 60-second fan blade, 61-transmission case, 62-motor, 63-electric cylinder, 64-internal gear, 65-opening, 66-fixed frame, 67-second crank, 68-fixed rod, 69-fourth gear, 70-cross-shaped connecting frame, 71-fixed gear, 72-fifth gear, 73-liquid storage case, 74-infusion tube, 75-spray head, 76-water pump, 77-brush and 78-wind plate.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following description of the preferred embodiments of the present invention with reference to the accompanying drawings is provided, and it should be understood that the preferred embodiments described herein are only for illustrating and explaining the present invention and are not intended to limit the present invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The embodiment of the invention provides an accumulative lifting construction method of an overlarge span prestressed arch-shaped dry coal shed, which comprises the following steps as shown in figures 1-20:
step 1: dividing the whole super-large span prestressed arch-shaped dry coal shed into a plurality of construction areas 1 according to deformation joints, dividing each construction area 1 into a lifting area 2, a hoisting area 3 and a post-repairing area 4 according to different construction modes, wherein the construction areas 1 at two end parts comprise gable walls 5;
step 2: an assembling site is arranged near a gable 5, a gable truss column 6, a gable truss beam 7 and a gable main truss 8 are assembled in sections, the gable truss column 6, the gable truss beam 7 and the gable main truss 8 are respectively hoisted in place by a crane, and when the truss of the gable 5 is installed, the truss is installed from two sides to the middle, so that the installed trusses are connected into a whole in time, and wind-holding ropes are arranged for ensuring construction and installation;
and step 3: arranging splicing areas in the dry coal shed, splicing the main truss 10 in sections and integrally splicing the secondary truss 11, providing a construction site according to the requirement of coal storage in the coal yard, and arranging the splicing areas at far positions as possible so as to reduce the moving times of the splicing jig frame and increase the construction area;
and 4, step 4: the method comprises the following steps of arranging temporary support frames 12, hoisting main trusses 10, secondary trusses 11, main purlines 13 and secondary purlines 14 in hoisting areas on two sides, installing a hoisting system at the top of the main truss, wherein each temporary support frame 12 mainly comprises a foundation 22, tower crane sections 23, cap heads 24 and conversion nodes, the foundation 22 is a reusable concrete foundation, the section size of each tower crane section 23 is 1.3-1.7 m, each cap head 24 is a cross formed by welding H-shaped steel, each conversion node comprises 2 tower crane sections 23, the middles and the tops of the 2 tower crane sections 23 are connected by lattice trusses, and each lattice truss comprises the channel steel and the angle steel;
the bottom of the main truss 10 is connected with a basic embedded part through a finished product hinged support 30, and the finished product hinged support 30 is welded with the embedded part through a connecting lug plate in each of four directions, so that the finished product hinged support 30 is prevented from rotating in the construction process and construction safety is prevented from being influenced;
and 5: dividing the lifting zone 2 into a first lifting zone 15 and a second lifting zone 16, the first lifting zone 15 being located between the two second lifting zones 16;
step 6: installing the assembled support frames 17 in the lifting area 2, wherein the assembled support frames 17 are arranged in the lifting area 2 at intervals, and the height of the assembled support frames 17 is different;
and 7: installing a first support frame 18 and a first support frame 19, and installing a lifting system at the top of the support frames at the same time, wherein the first support frame 18 and the first support frame 19 are both composed of tower crane sections 23;
the first supporting frame 18 consists of a foundation 22, a tower crane section 23, a hat head 24 and a lifting steel beam 59, wherein the foundation 22 is a reusable concrete foundation, the cross section of the tower crane section 23 is 1.3-1.7 m, the hat head 24 is a cross formed by welding H-shaped steel, the hat head 24 is provided with the lifting steel beam 59, lifting equipment is arranged on the lifting steel beam 59, the cross section of the lifting steel beam 59 is box-shaped, and a guide frame and a safety rail of a lifting steel strand are arranged on the lifting steel beam 59;
the first supporting frame 19 consists of a foundation 22, a tower crane section 23, a cap head 24 and a lifting steel beam 59, wherein the foundation 22 is an assembly type foundation which can be reused and consists of 4 moving piers 25 made of concrete, 1 reinforced foundation tower section 26, 4 inclined struts 27 and 2 groups of counter weights 79; the cross section of the tower crane section 23 is 2-2.4 m, and the cap head 24 is a # -shaped welded H-shaped steel; the cap head 24 is provided with a lifting steel beam 59; lifting equipment is arranged on the lifting steel beam 59, the lifting steel beam 59 is a lattice truss which can be assembled, and a dredging frame and a safety rail of a steel strand for lifting are arranged on the lifting steel beam 59;
each support frame body consists of two tower sections, the tops of the tower sections are connected through a lifting steel beam 59, 4 temporary steel guys are arranged in the middle of each tower section at intervals of 15 meters, when the truss is lifted and meets the temporary steel guys, the temporary steel guys are dismantled, and the temporary steel guys are recovered in time after the truss passes through;
and 8: the main truss 10 assembled in sections and the secondary truss 11 assembled integrally are subjected to tire unloading, turning over and hoisting by a crawler crane to complete the assembling work of the truss in the lifting area 2, and the roof stay cable 29 and the secondary truss 11 are tensioned before the truss is lifted;
and step 9: installing a main purline 13 and a secondary purline 14;
step 10: and carrying out first truss lifting, and arranging a lifting anchor point at the lower chord of the truss. The anchor point is arranged on the lifting lower anchor point steel beam, the lifting lower anchor point steel beam is in welded connection with the lower chord of the truss through the adapter, the section of the lifting lower anchor point steel beam is box-shaped, the adapter is made of round steel tubes and is connected to the lower chord node of the truss, a partition plate is arranged in the node, a lifting hole is formed in the lifting lower anchor point steel beam, and a ring plate and the partition plate are adopted for reinforcing the hole;
when the truss is lifted, firstly, trial lifting is carried out, the truss is lifted by 100mm and then is kept still for 12 hours, and whether the truss changes or not is observed;
the truss lifting process is slow and uniform, and the internal force and displacement changes of the truss are monitored in various ways;
step 11: after the first lifting in place, the truss is folded for the first time
Step 12: installing a string cable 20, then tensioning the string cable 20 to a construction calculated value, and installing one end of a stay cable 21 at the same time, so that one end of the stay cable 21 is lifted in place along with the truss;
step 13: removing the first support frame 18;
step 14: carrying out second truss lifting to complete second folding;
step 15: unloading the truss in the lifting area 2 after the truss is detected to be qualified;
step 16: unloading the truss in the hoisting area 3;
and step 17: removing the temporary support frame 12 and the first support frame 18;
step 18: installing the other end of the stay cable 21, tensioning the stay cable 21, and then checking and adjusting the cable force of the tensioning chord cable 20 and the stay cable 21;
step 19: mounting the post-repairing area 4;
step 20: and installing the roof panel 9.
The beneficial effects of the above technical scheme are: compared with the prior art, the invention changes a large amount of overhead operation into ground operation, and most construction contents are completed on the ground, thereby effectively reducing the overhead operation, reducing the construction difficulty, ensuring the construction safety, improving the construction efficiency, simultaneously effectively improving the quality control of the construction process and ensuring the construction quality.
In one embodiment, as shown in fig. 21, a plurality of displacement sensors 31 are arranged on the truss at intervals, a plurality of position sensors 32 are respectively arranged at intervals between two ends of the truss in the lifting area 2 and one end of the truss in the hoisting area 3, which is close to the truss in the lifting area 2, and a plurality of strain sensors 34 and vibration sensors 35 are arranged on the truss in the lifting area 2 at intervals.
The beneficial effects of the working principle of the technical scheme are as follows: displacement sensor 31 is used for detecting the distance that the truss removed, position sensor 32 is used for detecting the change of position and distance between the in-process that promotes district 2 truss and the 3 trusses of hoist and mount district, be convenient for assemble 2 trusses of promotion district and 3 trusses of hoist and mount district, strain sensor 34 is used for detecting 2 trusses of promotion district lift in-process, the change of truss stress, avoid the truss to damage because of self stress is too big, vibration sensor 35 is used for detecting the vibration condition when the truss removes, guarantee to promote 2 trusses of district safe high-efficient promotion.
In one embodiment, as shown in fig. 22, the portable electronic device further includes a controller 36, a processor 37, a wireless communication component 38 and a charging power supply 39 are disposed in the controller 36, a display screen 40 and a control panel 41 are disposed on one side wall of the controller 36, an alarm 42 and a charging interface 33 are disposed on the other side wall of the controller 36, the processor 37 is electrically connected to the wireless communication component 38, the charging power supply 39, the display screen 40, the control panel 41 and the alarm 42, the wireless communication component 38 is wirelessly connected to the displacement sensor 31, the position sensor 32, the strain sensor 34 and the vibration sensor 35, and the charging power supply 39 is electrically connected to the charging interface 33.
The beneficial effects of the working principle of the technical scheme are as follows: the controller 36 is used for controlling each sensor, the processor 37 is used for processing data detected by each sensor, the wireless communication component 38 is used for receiving the data detected by each sensor and transmitting commands of the processor 37 to each sensor, the display screen 40 is used for displaying the data detected by each sensor and the state of the truss in real time, the control panel 41 is used for operating the controller 36, the charging power supply 39 is used for supplying power to each component in the controller 36, and the charging interface 33 is used for being connected with an external power supply and charging the charging power supply 39.
In one embodiment, as shown in fig. 23-24, and as shown in fig. 23-24, further comprising a heat sink comprising: a fixed plate 43, a driving motor 44, a first crank 45, a sweeper 46,
a heat dissipation port 47 is formed in one side wall of the controller 36, a filter screen 48 is arranged in the heat dissipation port 47, a fixed plate 43 is arranged in the controller 36, two ends of the fixed plate 43 are respectively connected with the inner walls of the same sides of the controller 36, a driving motor 44 is arranged on the fixed plate 43, an output shaft of the driving motor 44 is connected with one end of a first crank 45 facing the heat dissipation port 47, the other end of the first crank 45 is provided with a first gear 49, one side of the driving motor 44 is provided with a transmission shaft 50, one end of the transmission shaft 50 penetrates through the fixed plate 43 to be connected with a first rotating plate 51, the transmission shaft 50 is rotatably connected with the fixed plate 43, a plurality of first fan blades 52 are arranged on the circumferential outer wall of the first rotating plate 51 at intervals, and the other end of the transmission shaft 50 sequentially penetrates through one end of a first swing rod 53 and the axis of a second gear 54 to be connected with a second rotating plate 55, the transmission shaft 50 is rotatably connected with the first oscillating bar 53, the transmission shaft 50 is fixedly connected with the second gear 54, and a plurality of second fan blades 60 are arranged on the circumferential outer wall of the second rotating plate 55 at intervals;
one end of a second swing rod 56 is rotatably connected with the joint of the first crank 45 and the first gear 49, the other end of the second swing rod 56 is rotatably connected with a third gear 57, the third gear 57 is positioned between the first gear 49 and the second gear 54, the third gear 57 is respectively meshed with the first gear 49 and the second gear 54, the outer wall of one side of the third gear 57 close to the heat dissipation port 47 is provided with a sweeping brush 46, the sweeping brush 46 is contacted with the filter screen 48, the other end of the first swing rod 53 is rotatably connected with the joint of the second swing rod 56 and the third gear 57, one end of a spring 58 is connected with the first swing rod 53, and the other end of the spring 58 is connected with the second swing rod 56.
The beneficial effects of the working principle of the technical scheme are as follows: the heat dissipation port 47 is used for dissipating heat generated by operation of each component in the controller 36, the filter screen 48 is used for preventing each component in the controller 36 from being polluted by dust, the driving motor 44 is started to drive the first crank 45 to rotate, the first gear 49 is driven to rotate around an output shaft of the driving motor 44, the second swing rod 56 is driven to swing back and forth while swinging back and forth in a reciprocating manner around the axis of the third gear 57, the third gear 57 is driven to swing back and forth around the transmission shaft 50, and the first swing rod 53 is driven to swing back and forth in a reciprocating manner; when the second swing link 56 swings forwards, the first swing link 53 swings forwards, the third gear 57 swings forwards, the second gear 54 rotates clockwise with a reduced speed through the gear engagement transmission between the first gear 49 and the third gear 57, the third gear 57 rotates anticlockwise with an accelerated speed, the second gear 54 rotates anticlockwise with an accelerated speed through the gear engagement transmission between the third gear 57 and the second gear 54, when the second swing link 56 swings backwards, the third gear 57 rotates clockwise first and then rotates anticlockwise with an accelerated speed, so that the second gear 54 rotates anticlockwise first and then rotates clockwise with an accelerated speed, through the compound superposition of motion, the third gear 57 swings forwards and backwards around the transmission shaft 50 and rotates intermittently and forwards at variable speed, the sweeper 46 is driven to swing forwards and backwards around the transmission shaft 50, the intermittently and forwards at variable speed, the filter screen 48 is cleaned, and the sweeper 46 can clean the core area of the filter screen 48, the cleaning capability is strong, the cleaning effect is good, the influence on the edge part of the filter screen 48 is small, and the service life of the filter screen 48 is prolonged; through the compound superposition of motion, the second gear 54 intermittently rotates clockwise at a reduced speed, then rotates anticlockwise and then rotates clockwise at an increased speed to drive the first fan blade 52 and the second fan blade 60 to intermittently rotate clockwise at a reduced speed, then rotates anticlockwise and then rotates clockwise at an increased speed, the first fan blade 52 blows air flow to cool each component in the controller 36, the second fan blade 60 blows air flow to blow dust swept down by the sweeper brush 46 out of the controller 36, the sweeping efficiency of the sweeper brush 46 is improved, and each component in the controller 36 is prevented from being polluted by dust; when the second swing rod 56 swings forwards, the distance between the second swing rod 56 and the first swing rod 53 is increased, the spring 58 is stretched, when the second swing rod 56 swings backwards, the distance between the second swing rod 56 and the first swing rod 53 is reduced, the spring 58 is compressed, the spring 58 vibrates to shake off dust on the sweeper brush 46, the sweeper brush 46 is kept clean, and sweeping efficiency is improved.
In one embodiment, as shown in fig. 25-26, further comprising a lubrication maintenance device, the lubrication maintenance device comprising: a transmission case 61, a motor 62, an electric cylinder 63, an internal gear 64,
the bottom end of the upper chord main truss 10 of the lifting area 2 is provided with a transmission case 61, the bottom end of the transmission case 61 is provided with an opening 65, an electric cylinder 63 is arranged on the inner wall of the top end of the transmission case 61, a piston rod of the electric cylinder 63 is downwards provided with a motor 62, the output shaft of the motor 62 passes through the fixing frame 66 downwards to be connected with one end of a second crank 67, the top end of the fixed frame 66 is fixedly connected with the motor 62, the bottom end of the fixed frame 66 is provided with an internal gear 64, one end of a fixed rod 68 is connected with the other end of the second crank 67, the other end of the fixed rod 68 sequentially passes through the axis of the fourth gear 69 and the axis of the cross-shaped connecting frame 70 to be connected with the fixed gear 71, the fixing rod 68 is respectively connected with the fourth gear 69 and the cross-shaped connecting frame 70 in a rotating manner, the fourth gear 69 is meshed with the internal gear 64, and the internal gear 64 is fixedly connected with the cross-shaped connecting frame 70;
The beneficial effects of the working principle of the technical scheme are as follows: starting the electric cylinder 63, enabling a piston rod of the electric cylinder 63 to move downwards to penetrate through the opening 65 to drive the opening 65 of the lubricating and maintaining device to extend out of the transmission box 61, starting the water pump 76, enabling lubricating liquid in the liquid storage box 73 to be sprayed out from the liquid conveying pipe 74 to the spray head 75 to lubricate and maintain the truss, the tension chord cable 20 and the stay cable 21 in the dry coal shed, avoiding the truss, the tension chord cable 20 and the stay cable 21 from being corroded by the outside for too long time of use, influencing the use safety of the dry coal shed, prolonging the service life of the dry coal shed, starting the motor 62, driving the second crank 67 to rotate, driving the fixing rod 68 to rotate around an output shaft of the motor 62, driving the fourth gear 69, the cross-shaped connecting frame 70 and the fixing gear 71 to rotate around an output shaft of the motor 62, and driving the fourth gear 69 to rotate around the fixing rod 68 through gear meshing transmission between the fourth gear 69 and the internal gear 64 to enable the fourth gear 69 to rotate around the cross-shaped connecting frame 70 to rotate around the fixing rod 68, through the gear meshing transmission between the fifth gear 72 and the fixed gear 71, the fifth gear 72 rotates, through the compound superposition of motion, the fifth gear 72 rotates around the fixed rod 68 while rotating, and rotates around the output shaft of the motor 62, so that the spray head 75 is driven to rotate around the fixed rod 68 while rotating, and simultaneously rotates around the output shaft of the motor 62, the spray head 75 has a large spraying range and high spraying efficiency, and meanwhile, the number of the spray heads 75 can be increased by increasing the number of the fifth gears 72 as required, so that the spraying efficiency is further improved; the spray head 75 sprays the lubricating liquid onto the brush 77, the brush 77 brushes the lubricating liquid to the key parts of the truss, so that the lubricating maintenance effect is improved, and meanwhile, the lubricating liquid gathered on the surface of the truss is swept away, so that the truss is prevented from being excessively corroded by the lubricating liquid; the cross-shaped connecting frame 70 drives the air plate 78 to rotate around the fixing rod 68 and the output shaft of the motor 62, so that the air plate 78 disturbs airflow and the spraying range of the spray head 75 is enlarged; meanwhile, the liquid sprayed by the spray head 75 can be used for dust fall in the dry coal shed; after lubrication is completed, the electric cylinder 63 is started, and the lubrication maintenance device is retracted into the transmission case 61, so that the lubrication maintenance device is prevented from being damaged.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. An accumulative lifting construction method of an overlarge span prestressed arch-shaped dry coal shed is characterized by comprising the following steps:
step 1, dividing a dry coal shed into a plurality of construction areas (1), and dividing each construction area (1) into a lifting area (2), a hoisting area (3) and a post-supplement area (4) according to different construction modes;
step 2, construction areas (1) at two ends of the dry coal shed respectively comprise gable walls (5), an assembling site is arranged near the gable walls (5), the gable truss columns (6), the gable truss beams (7) and the gable main trusses (8) are assembled in a segmented mode, and the gable truss columns (6), the gable truss beams (7) and the gable main trusses (8) are hoisted in place respectively by a crane;
step 3, firstly installing the truss of the hoisting area (3), then assembling the truss of the lifting area (2), and then assembling the truss of the hoisting area (3) and the truss of the lifting area (2);
step 4, unloading the trusses of the lifting area (2) and the hoisting area (3), then installing the inhaul cables, and checking and adjusting the cable force;
and 5, mounting the post-repairing area (4) and the roof panel (9).
2. The method for the accumulative lifting construction of the oversized cross-prestressed arched dry coal shed as claimed in claim 1, wherein in the step 3,
an assembly area is arranged in the dry coal shed, a main truss (10) is assembled in the assembly area in sections, and a secondary truss (11) is integrally assembled;
arranging temporary support frames (12) in the dry coal shed, hoisting main trusses (10), secondary trusses (11), main purlins (13) and secondary purlins (14) of hoisting areas (3) on two sides of the assembly area, and installing a lifting system at the top of the main trusses (10);
the lifting area (2) comprises a first lifting area (15) and second lifting areas (16), the two second lifting areas (16) are respectively positioned at two sides of the first lifting area (15), a plurality of assembling support frames (17) are arranged in the lifting area (2) at intervals, a first support frame (18) and a second support frame (19) are respectively installed in the first lifting area (15), and lifting systems at the tops of the two support frames are simultaneously installed;
the method comprises the steps of adopting a crawler crane to carry out tire unloading, turning over and lifting on a main truss (10) assembled in sections and a secondary truss (11) integrally assembled, completing assembly of trusses in a lifting area (2), simultaneously installing a roof inhaul cable (29), and then installing a main purline (13) and a secondary purline (14).
3. The method for the accumulative lifting construction of the oversized cross-prestressed arched dry coal shed as claimed in claim 2, wherein in the step 3,
after the truss assembly of the lifting area (2) is finished, carrying out first truss lifting, carrying out first folding of the truss after the first lifting is in place, then installing a string tensioning cable (20) and a stay bar (28), and tensioning the string tensioning cable (20) to a construction calculated value;
and (3) removing the first supporting frame (18), and then carrying out second truss lifting to complete second folding.
4. The method for the accumulative lifting construction of the oversized cross-prestressed arched dry coal shed as claimed in claim 2, wherein in the step 3,
the support frame includes: a foundation (22), a tower crane section (23), a cap head (24) and a lifting steel beam (59),
the tower crane is characterized in that a tower crane joint (23) is arranged at the top end of the foundation (22), a cap head (24) is arranged in the tower crane joint (23), a lifting steel beam (59) is arranged on the cap head (24), lifting equipment is arranged on the lifting steel beam (59), the lifting steel beam (59) is a lattice truss capable of being assembled, and the cross section of the lattice truss is rectangular;
the base (22) comprises: remove mound (25), basic tower festival (26) bottom rotates respectively all around and is connected with removal mound (25), basic tower festival (26) is provided with bracing (27) all around respectively, bracing (27) one end with the vertical frame of basic tower festival (26) is connected, bracing (27) other end with remove mound (25) with the junction of basic tower festival (26) is connected, tower crane festival (23) sets up basic tower festival (26) top, basic tower festival (26) both sides are provided with counter weight (79) respectively.
5. The method for the accumulative hoisting construction of the ultra-large span prestressed arch-shaped dry coal shed as claimed in claim 2, wherein in the step 3,
the bottom end of a main truss (10) of the hoisting area (3) is rotatably connected with a finished product hinged support (30), an embedded part is arranged below the main truss (10), and the finished product hinged support (30) is connected with the embedded part through a plurality of connecting lug plates in a welding mode.
6. The method for the accumulative lifting construction of the oversized cross-prestressed arched dry coal shed as claimed in claim 3, wherein in the step 4,
after the truss is installed, detecting, after the truss is detected to be qualified, unloading the truss in the lifting area (2), and then detaching the temporary support frame (12) and the second support frame (19);
and (3) installing and tensioning the stay cables (21), and then checking and adjusting the cable force of the tensioning chord cables (20) and the stay cables (21).
7. The method for the accumulative lifting construction of the oversized cross-prestressed arched dry coal shed as claimed in claim 1, wherein a plurality of displacement sensors (31) are arranged on the truss at intervals, a plurality of position sensors (32) are respectively arranged at intervals at two ends of the truss of the lifting area (2) and one end of the truss of the hoisting area (3) close to the truss of the lifting area (2), and a plurality of strain sensors (34) and vibration sensors (35) are arranged on the truss of the lifting area (2) at intervals.
8. The accumulated lifting construction method of the overlarge span prestressed arched dry coal shed according to claim 7, characterized in that a controller (36) is further included, a processor (37), a wireless communication component (38) and a charging power supply (39) are arranged in the controller (36), a display screen (40) and a control panel (41) are arranged on one side wall of the controller (36), an alarm (42) and a charging interface (33) are arranged on the other side wall of the controller (36), the processor (37) is respectively electrically connected with the wireless communication component (38), the charging power supply (39), the display screen (40), the control panel (41) and the alarm (42), the wireless communication component (38) is respectively wirelessly connected with the displacement sensor (31), the position sensor (32), the strain type sensor (34) and the vibration sensor (35), the charging power supply (39) is electrically connected with the charging interface (33).
9. The method for the accumulative hoisting construction of the oversized cross-prestressed arched dry coal shed as claimed in claim 8, further comprising a heat dissipation device, wherein the heat dissipation device comprises: a fixed plate (43), a driving motor (44), a first crank (45) and a sweeper (46),
a heat dissipation port (47) is formed in one side wall of the controller (36), a filter screen (48) is arranged in the heat dissipation port (47), a fixing plate (43) is arranged in the controller (36), two ends of the fixing plate (43) are respectively connected with the inner wall of the same side of the controller (36), a driving motor (44) is arranged on the fixing plate (43), an output shaft of the driving motor (44) faces towards the heat dissipation port (47) and is connected with one end of a first crank (45), a first gear (49) is arranged at the other end of the first crank (45), a transmission shaft (50) is arranged on one side of the driving motor (44), one end of the transmission shaft (50) penetrates through the fixing plate (43) to be connected with a first rotating plate (51), the transmission shaft (50) is rotatably connected with the fixing plate (43), and a plurality of first fan blades (52) are arranged on the circumferential outer wall of the first rotating plate (51) at intervals, the other end of the transmission shaft (50) sequentially penetrates through one end of a first swing rod (53) and the axis of a second gear (54) to be connected with a second rotating plate (55), the transmission shaft (50) is rotatably connected with the first swing rod (53), the transmission shaft (50) is fixedly connected with the second gear (54), and a plurality of second fan blades (60) are arranged on the circumferential outer wall of the second rotating plate (55) at intervals;
one end of a second swing rod (56) is rotationally connected with the joint of the first crank (45) and the first gear (49), the other end of the second swing rod (56) is rotatably connected with a third gear (57), the third gear (57) is positioned between the first gear (49) and the second gear (54), the third gear (57) is meshed with the first gear (49) and the second gear (54) respectively, the outer wall of one side of the third gear (57) close to the heat dissipation opening (47) is provided with a sweeping brush (46), the sweeping brush (46) is in contact with the filter screen (48), the other end of the first swing rod (53) is in rotary connection with the joint of the second swing rod (56) and the third gear (57), one end of a spring (58) is connected with the first swing rod (53), and the other end of the spring (58) is connected with the second swing rod (56).
10. The construction method for the accumulative lifting of the oversized cross-prestressed arched dry coal shed as claimed in claim 1, further comprising a lubricating maintenance device, wherein the lubricating maintenance device comprises: a transmission case (61), a motor (62), an electric cylinder (63) and an internal gear (64),
promote district (2) upper chord main truss (10) bottom and be provided with transmission case (61), transmission case (61) bottom is provided with opening (65), be provided with electric jar (63) on transmission case (61) top inner wall, the piston rod of electric jar (63) is provided with motor (62) down, the output shaft of motor (62) passes mount (66) down and is connected with second crank (67) one end, mount (66) top with motor (62) fixed connection, mount (66) bottom is provided with internal gear (64), dead lever (68) one end with second crank (67) other end is connected, dead lever (68) other end passes fourth gear (69) axis, cross link (70) axis in proper order and is connected with fixed gear (71), dead lever (68) respectively with fourth gear (69), The cross-shaped connecting frame (70) is rotationally connected, the fourth gear (69) is meshed with the internal gear (64), and the internal gear (64) is fixedly connected with the cross-shaped connecting frame (70);
cross link (70) rotates respectively all around and is connected with fifth gear (72), fifth gear (72) with fixed gear (71) intermeshing, fifth gear (72) bottom center department is provided with liquid reserve tank (73), infusion pipe (74) top of vertical setting with liquid reserve tank (73) intercommunication, infusion pipe (74) bottom is provided with shower nozzle (75), be provided with water pump (76) on infusion pipe (74), fifth gear (72) bottom is provided with brush (77), brush (77) are located the liquid reserve tank (73) outside, each branch top of cross link (70) is provided with respectively along axially extended aerofoil (78).
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