CN115822339A - Construction method for installing recyclable section steel storage bin greenhouse - Google Patents

Abstract

The invention discloses a construction method and a use method for installing a turnover type steel storage bin greenhouse, belonging to the technical field of installation and construction of the storage bin greenhouse of a mixing station; the method comprises the following steps: s1, preparation before construction; s2, excavating a foundation; s3, embedding foundation bolts; s4, processing and entering a component; s5, hoisting the steel beam; s6, installation and correction; s7, constructing the high-strength bolt; s8, hoisting the roof girder; s9, mounting purlines; s10, mounting a roof and a wall panel; and S11, self-checking and cleaning. The H-shaped steel provided by the invention has good plasticity and flexibility and high structural stability, and can enable the storage bin greenhouse to have greater natural disaster resistance, so that the storage bin greenhouse can meet the use requirements under most environments.

Description

Construction method for installing recyclable section steel storage bin greenhouse

Technical Field

The invention relates to the technical field of mixing station bin greenhouse installation construction, in particular to a construction method for installing a turnover type steel bin greenhouse.

Background

The traditional feed bin greenhouse has the problems of wind resistance, low compressive strength, non-turnover use of materials, slow construction progress, high construction risk and large labor input, so that a turnover type steel feed bin greenhouse installation and construction method which is good in plasticity and flexibility, high in structural stability, high in material turnover rate and small in labor input is urgently needed.

Disclosure of Invention

In order to achieve the purpose, the invention adopts the following technical scheme:

a construction method for installing a recyclable section steel storage bin greenhouse comprises the following steps:

s1, preparation before construction

S11, flattening and rolling a mixing station field, and then carrying out stone throwing and gravel replacement;

s12, filling the mixing stations in different areas;

s13, according to the construction organization plan, protecting the site buildings and setting obvious marks for cables in the air in the operation range;

s2, excavating foundation

Setting out a layout by using a total station, and arranging a concrete independent foundation on a steel structure upright post of the material shed;

s3, embedding foundation bolts in advance

Checking the column base positioning axis of foundation construction, and embedding foundation bolts;

s4, processing and entering of the component

The materials are supplied in a set after being processed by a processing plant according to the installation sequence; stacking the components to a designated position according to a field plan;

s5, hoisting the steel beam;

s6, installation correction

Checking the verticality of the correction steel column by using a total station or a plumb bob, and immediately fixing after correction;

s7, high-strength bolt construction

All the components are connected by bolts;

s8, hoisting roof beam

The roof girder installation process does: ground assembly → inspection → air hoisting;

s9, purlin installation

Hoisting purlines by adopting a method of one hook for multiple hoisting or hoisting in a sheet manner, checking and correcting straightness by using a stay wire and a steel ruler, and finally fixing by using bolts;

s10, mounting roof and wall panels

S101, storing requirements on site;

s102, installing a pressed tile roof;

s103, installing the notice;

s11, self-checking and cleaning

Carrying out comprehensive inspection on the bin greenhouse after the construction of the bin greenhouse is finished; after the installation work is finished, sundries are cleaned up, and dust is guaranteed to be free.

Further, the step S102 of installing the pressed tile roof specifically includes the following steps:

s1021, lapping the plate ribs back to the wind direction;

s1022, the plates are connected in a rib mode, and the female ribs are buckled on the male buckles;

s1023, bending the steel plate upwards by 80 degrees at the ridge and the drawing mark to form a water baffle, and forming a water dripping line by 10 degrees at the lower part of the eaves gutter and the lower end;

s1024, reserving a gap of about 100mm between two steel plates at the ridge so as to insert an upward bending tool, and outwards raising a profiled steel plate at the gutter by 100mm-200mm;

and S1025, fixing the screw to be vertical to the steel plate and the purline and aligning the fixing screw to the center of the purline, and hanging the line before nailing to ensure that the nailing line is straight.

Further, step S8 is a concrete implementation step of roof girder hoisting:

s81, checking the component and the high-strength bolt connection friction surface before ground assembly; when the ground is assembled, the oil-free sleepers are adopted to cushion the components, the two sides of the components are supported by wooden bars to form an assembling platform, the platform is provided with at least 4 bearing points, the solid web beams are all placed on the platform and are assembled according to the serial numbers of drawings, the solid web beams are firstly connected by high-strength bolts and are firstly screwed, and the solid web beams are finally screwed by a force measuring wrench after being inspected to be accurate; repeating the steps, assembling the whole row, checking the hoisting points, and aligning the datum and the central line;

s82, connecting the steel pipes by using high-strength bolts meeting the use requirements, wherein the high-strength bolts freely penetrate into the holes and the penetrating directions are consistent; the high-strength bolt is screwed outwards from the center by a kilogram of electric wrenches, the screwing is divided into initial screwing and final screwing, and the initial screwing force is preferably 50% of the final screwing force; when a gap exists on the contact surface of the high-strength bolt, the gap smaller than 1.0mm can be left untreated; for a gap of 1.0-3.0mm, grinding the raised side into a slope of 1; for the cushion plate added when the gap is larger than 3.0mm, the processing method of the cushion plate is the same as that of the contact surface;

s83, hoisting by adopting a single truss, binding the hoisting points by adopting two points, and using soft material pads for the binding points; when the steel beam is lifted, the steel beam is lifted to about 50cm away from the ground, the center of the steel beam is aligned with the center of the installation position, then the steel beam is lifted to be above the column top, then the steel beam is rotated by a sliding rope to be aligned with the column top or a bracket, hooks are slowly dropped, the steel beam is immediately braked when just contacting the column top, the steel beam is aligned with reserved bolt holes, bolts are inserted into the holes, and are temporarily fixed by initial screwing, and meanwhile, the verticality is corrected and finally fixed.

The invention has the following beneficial effects:

1. the construction sites are mostly positioned at the valley between two mountains, are influenced by the narrow tube effect of wind power and are in a strong wind environment all the year round, the influence period of the cross wind and the side pressure on the bin greenhouse is long, the pressure is large, the upright posts and the cross beams adopt H-shaped steel as a main stress structure bin greenhouse, the H-shaped steel has good plasticity and flexibility and high structural stability, the bin greenhouse can have greater natural disaster resistance, and the bin greenhouse can meet the use requirements under most environments;

2. the connection between the upright columns and the cross beams of the storage bin greenhouse is realized by adopting bolts, the foundation bolts are embedded when the upright column foundation is constructed, the upright columns are connected with the foundation by adopting the foundation bolts, the length of the upright columns wrapped in the wall is calculated before the upright columns are installed, a layer of isolation oil is coated in advance, and after antiseptic treatment is carried out, a layer of plastic film with the thickness of 1mm is wrapped, so that the surfaces of the upright columns are separated from concrete, the upright columns can be completely stripped by breaking the outer-wrapped concrete when the storage bin greenhouse is disassembled, and the turnover utilization rate of the upright columns can be improved after the antiseptic treatment is carried out again, so that the turnover utilization rate reaches more than 300%;

3. according to the invention, the steel column and the cross beam are connected by bolts, the steel member is connected with the steel plate in a factory in advance, and the bolts are reinforced by electric wrenches when being hoisted to the corresponding positions in construction, so that the construction efficiency can be greatly improved and the construction period can be shortened under the condition of reducing labor input;

4. the feed bin greenhouse disclosed by the invention is constructed by adopting bolt connection, is not influenced by power supply conditions, can be normally constructed under the condition of no power, can be constructed under the condition of no power in the whole process, has the electric shock probability almost reduced to zero compared with the original welding connection process, and greatly reduces the construction risk;

5. the storage bin greenhouse is connected through the bolts, power supply is not needed, power consumption is greatly reduced, cost is reduced, and meanwhile, the effects of energy conservation and environmental protection are achieved.

Drawings

FIG. 1 is a process flow diagram of a construction method for installing a turnover type steel silo greenhouse provided by the invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Example 1

Referring to fig. 1, in the present embodiment, includes:

1. the concrete construction steps are as follows:

1. preparation before construction

1) Before the mixing station field is leveled and rolled, the surface vegetation and the humus soil must be removed and cleaned, and then the rubble throwing filling and the gravel replacing filling are carried out.

2) Filling of the mixing station needs to be carried out in different areas, the filling width is controlled to be about 30m each time, firstly, filling approach roads are carried out to the sections of the mixer main machine foundation so as to facilitate the construction of next work of mechanical equipment approach, then, the filling operation of the stock bin range foundation is carried out, the filling operation needs to be carried out in different layers, the layered filling height is controlled to be within 30cm, and the total height of filled earth is controlled to be about 50 cm. When filling construction, the filling material must be flattened by a bulldozer and then rolled. The mixing station is rolled for not less than 5 times by a road roller, and the filling rolling is not less than 6 times. During construction, the construction quality is strictly filled, and spring soil and hollow water collection phenomena are strictly forbidden.

3) According to the construction organization plan, the protection of the site building is well done, and obvious marks are set for cables in the air in the operation range. And (4) making the on-site tee joint work in a flat mode. Before installation, concrete ash needs to be removed, a basic positioning line needs to be established, and an accurate cross-shaped axis needs to be marked obviously by red paint so as to ensure that the axis is matched with the axis of the steel column.

2. Foundation excavation

The foundation construction is lofted by adopting a total station, a material shed steel structure column foundation is a C30 concrete independent foundation, the size of a main beam column foundation is 1.2m multiplied by 1.4m multiplied by 1.2m, the size of a wind-resistant column foundation is 1m multiplied by 1.2m, the foundation is excavated manually, the bearing capacity of the foundation is detected after the excavation is finished, the bearing capacity of the foundation is designed to be 180Kpa, and if the bearing capacity requirement of the foundation is not met, the foundation is subjected to rubble replacement and filling treatment.

3. Foundation bolt embedding

And checking the column base positioning axis of foundation construction, and burying foundation bolts. In order to ensure the accurate positioning of the foundation bolt, the steel template hole sleeve for the foundation bolt is positioned and fixed, and the concrete pouring construction can be carried out after repeated checking without errors. The part of the foundation bolt exposed out of the ground is wrapped and protected by plastic cloth.

4. Component processing and approach

The components are supplied in a complete set after being processed by a processing plant according to the installation sequence, vehicles are selected according to the length and the weight when the components are transported, the components are flatly padded on a transport vehicle, the components are marked in an overlong way, the binding is stable, the extending lengths of two ends are extended, the binding method is adopted, and the cushion blocks between the components are arranged, so that the components are not deformed during transportation, and the coating is not damaged. During loading, unloading and hoisting, the steel wire rope and the member are protected by the cushion block.

The components are stacked to a specified position according to the field plan. The storage site of the components needs to be flat and solid without accumulated water, the bottom layer of the stacked components is padded with oil-free sleepers, and the fulcrums of the steel components on each layer need to be on the same vertical line to prevent the steel components from being crushed and deformed. After the components are stacked, obvious labels are arranged to indicate the types, specifications and quantity of the components for installation. Two steel frames are used as a unit, and the first unit is selected to be close to a gable wall and have a supporting position between columns when being installed.

5. Steel beam hoisting

Before hoisting, firstly determining the position of a hoisting point of a component, determining a binding method, and taking protective measures during hoisting; after the steel column is lifted, when the column base is about 30-40cm away from the foundation bolt, the steel column is righted, the mounting hole of the column base is aligned with the bolt, and the steel column is slowly hooked in place; after the initial calibration, the vertical deviation is within 20mm, the bolt is screwed down, and the hook can be unhooked after temporary fixation. Before installing the steel column, the length of the steel column wrapped in the wall is calculated, oil is applied in advance, a layer of plastic film with the thickness of 1mm is wrapped, the plastic film is separated from concrete, and anti-corrosion treatment is carried out, so that the steel column can be recycled.

6. Installation correction

The steel column perpendicularity correction is checked by using a total station or a plumb bob, when deviation exists, a jack is used for correction, the base is lifted a little by using the jack for elevation correction, then the thickness of a base plate is increased or decreased, foundation bolts are fastened immediately after column base correction is correct, and fine stone concrete is poured under a column base bottom plate for fixation after the steel column is corrected integrally.

And measuring and correcting the axis and the verticality of the steel beam, wherein the correction is carried out by adopting a jack and a chain block, and the steel beam is fixed immediately after the correction.

7. High-strength bolt construction

All the components are connected by bolts, and the following matters should be noted during construction:

1) The high-strength bolt must have a material certificate (quality guarantee certificate) before construction and must be retested before use.

2) The high-strength bolt is managed and properly kept by a specially-assigned person, and the high-strength bolt cannot be thrown or placed randomly, so that the high-strength bolt cannot damage the bolt and pollute dirt in the installation process, and the torque coefficient is prevented from changing.

3) The high-strength bolt is required to be moisture-proof and corrosion-proof.

4) When the bolt is installed, the optical head crowbar and the punching nail are used for aligning the screw holes of the upper connecting plate and the lower connecting plate (or the front connecting plate and the rear connecting plate), so that the bolt can freely penetrate.

5) If the error of the screw hole of the connecting plate is larger, the error is checked, analyzed and appropriately processed, and if the screw hole is adjusted inefficiently or the position of the left local screw hole is not correct, an electric reamer or a manual reamer can be used for punching.

6) On the same connecting surface, the high-strength bolts are thrown in the same direction, and the high-strength bolts are screwed up in the end of the day after being installed.

8. Roof girder hoisting

The roof beam installation process is as follows: ground assembly → inspection → air hoisting.

1) The components are inspected before ground assembly, and when the deformation and the defect of the components exceed the allowable deviation, the components need to be processed. And the high-strength bolt connection friction surface is checked, impurities such as mud and sand cannot be generated, the friction surface is required to be flat and dry, and the operation in the rain cannot be performed. When the ground is assembled, the oil-free sleepers are used for cushioning the components, and the two sides of the components are supported by the wooden bars, so that the stability is enhanced. An assembly platform is formed before assembly, the platform is provided with at least 4 supporting points, solid web beams are placed on the platform and are assembled according to the drawing numbers, high-strength bolts are used for connection and initial screwing, and a force measuring wrench is used for final screwing after the test is accurate. By analogy, the whole row is assembled, then the hoisting points are checked, and the reference and the central line are aligned.

2) The length and the diameter of the high-strength bolt for connection need to meet requirements. The high-strength bolt can freely penetrate into the hole, and can not be forcibly knocked and reamed by gas cutting, and the penetrating directions are consistent. The high-strength bolt is screwed outwards from the center by an electric wrench with kilogram number, and the screwing is divided into initial screwing and final screwing. The initial screw force is preferably 50% of the final screw force. When a gap exists on the contact surface of the high-strength bolt, the gap smaller than 1.0mm can be left untreated; 1.0-3.0mm of clearance, grind the higher side into 1; and (3) adding a base plate in a gap larger than 3.0mm, wherein the base plate is processed by the same method as the contact surface.

3) The hoisting is carried out by adopting a single-truss hoisting, the hoisting points are bound by two points, and the binding points are lined by soft materials to prevent the steel members from being damaged. The method comprises the steps of firstly hoisting a steel beam to be about 50cm away from the ground when hoisting, aligning the center of the steel beam to the center of an installation position, then slowly lifting a hook, hoisting the steel beam to be above a column top, then rotating the steel beam by using a sliding rope to be aligned to the column top or a bracket so as to enable the hook to be in place, slowly performing hook falling, immediately braking when the steel beam just contacts the column top, aligning a reserved bolt hole, penetrating a bolt into the hole, temporarily fixing by initial screwing, correcting and finally fixing the verticality, checking the verticality of the steel beam by using a wire hanging hammer, firmly pulling the steel beam from two sides by using two sliding ropes after the first steel beam is connected, and then connecting and fixing the second steel beam after each steel beam is hoisted. After the steel beam is corrected, various supports and the like can be installed, and finally the bolts are screwed and fixed.

9. Purlin installation

The purline has smaller section and lighter weight and is hoisted by adopting a method of hoisting by a plurality of hooks or hoisting by a plurality of pieces. The purlins are mainly corrected by the space size and the self-straightness. The sample rod for checking the spacing moves back and forth along the purline rods, and if errors exist, the bolts are loosened or screwed for correction. And checking and correcting the straightness by using a pull wire and a steel ruler, and finally fixing by using bolts.

10. Roof and wall panel installation

10.1 on-site storage requirement

1) The profiling tiles should be placed on sleepers or other skids for storage, and the steel plates should not be in direct contact with the ground. If the utility model is placed outdoors, the utility model must be covered by waterproof cloth.

2) The pressed tiles should be stacked far away from other exposed steel materials, such as steel bars, so as to prevent rust on the steel materials from falling onto the color steel plates and being difficult to remove, causing rust spots and permeating the steel plates.

3) When the steel plates are stacked in an overlapping mode, other heavy objects cannot be placed on the steel plates, and people are prohibited from stepping on the steel plates.

4) The profiled tiles conveyed to the layer surface are strictly placed on the installed steel plates when temporarily placed on the roof before installation so as to prevent the steel plates from being crushed due to gravity concentration, and the steel plates left on the roof after the installation are not completed in the same day need to be stacked into bundles to be bound so as to prevent the steel plates from being blown away by large partial wind.

5) Screws and sealants, etc. must be placed in the warehouse to avoid loss.

10.2 pressed tile roofing installation

1) The laying of the plate needs to pay attention to the perennial wind direction, and the lapping of the plate ribs needs to be back to the perennial wind direction.

2) The connection between the plates is only overlapped with one rib, and the female rib is necessarily buckled on the male buckle.

3) At the ridge and the drawing mark, the steel plate needs to be bent upwards by about 80 degrees to form a water baffle, and the lower part of the eave gutter and the lower end of the steel plate is arched by about 10 degrees to form a water dripping line.

4) At least a gap of about 100mm is reserved between two steel plates at the ridge so as to insert an upward bending tool, and the profiled steel plates at the gutter are outwards protruded by 100mm-200mm.

5) The fixing screw is perpendicular to the steel plate and the purline and is aligned with the center of the purline, and the line is hung before nailing, so that the nailing line is straight.

6) And (3) checking the flatness of the two ends of the steel plate every time 5-6 steel plates are installed, and if an error exists, timely adjusting.

10.3 installation notes

1) Carrying: and (3) hauling a single steel plate, wherein the steel plate needs to be lifted and transported by 3-5 persons according to the length of the steel plate so as not to deform the steel plate, the plate is placed on the roof in the installation direction during transportation so as not to turn around the steel plate on the surface roof, the steel plate is not required to be dragged on a rough surface during transportation, and the steel plates are not required to be dragged among the steel plates so as not to damage the finish paint.

2) When walking on the roof profiling tile, the user only needs to wear soft shoes without nails and grain bottoms, and can only step on the groove parts of the steel plates by feet, and the user is prohibited from stepping on the plate ribs and walking and standing on the gutter.

3) The screw fixing sequence must be the same as the plate laying direction, strictly prohibiting reverse fixing screws.

4) The steel plate is cut on the spot, and the steel plate is cut on the ground as far as possible without cutting at a place close to other steel plates, if the steel plate is cut on a roof, the operation is not required to be carried out on other steel plates, the front surface of the steel plate faces downwards during cutting, residual scrap iron on the cut steel plate needs to be cleaned, and otherwise, the early corrosion of the steel plate is easily caused.

5) The place needing to be sealed must be sealed strictly according to the requirement, avoid leaking.

6) The gutter and the opening are important parts of roof water resistance, construction personnel need to carefully construct, quality inspection personnel need to intensively inspect, and the gutter and the opening are not qualified and cannot be subjected to the next procedure.

7) The line on the steel plate is drawn by a water color pen, a pencil cannot be used, the steel plate cannot be in contact with materials such as lead and copper, and the places with silica gel cannot be painted with paint.

11. Self-checking and cleaning

The feed bin big-arch shelter is carried out comprehensive inspection after the construction of feed bin big-arch shelter is accomplished, observes whether each connection position of feed bin big-arch shelter is firm in connection, whether water-proof effects satisfies actual need, whether has the ponding phenomenon.

After the installation work is finished, scrap iron and sundries left on the roof and the wall surface on the same day are cleaned, dirty dust is removed in unclean places, and the roof and the wall are preferably cleaned by wet cloth to ensure cleanness and dustlessness.

2. Materials and apparatus

1. Main equipment configuration

Serial number	Name of instrument	Unit of	Number of	Remarks for note
					1	25t automobileHanging crane	Table (Ref. Table)	2
2	50t jack	Table (Ref. Table)	8
					3	5t electric hoist	Table (Ref. Table)	8
4	Welding machine	Table (Ref. Table)	2
					5	Total station	Table (Ref. Table)	1
6	Level gauge	Table (Ref. Table)	1
					7	50m steel tape	Handle	2
8	10m steel tape	Handle	4

2. Organization of the main workforce

4 workers are configured to be responsible for hoisting and primary reinforcement, 4 workers are responsible for secondary reinforcement and connection construction, 2 managers are configured, 1 worker is responsible for material supply, and 1 worker is responsible for in-process quality control.

3. Quality control

1. Engineering quality control standard

1) Steel structure engineering construction and quality acceptance criteria (GB 50205-2001)

2) Acceptance criteria for construction quality of concrete structure engineering (GB 50204-2002)

3) Construction quality acceptance criteria of building foundation engineering (GB 50202-2002)

4) Cold-formed thin wall steel structure technical specification (GB 50018-2002)

5) Design and construction procedure of profiled metal sheet (YBJ 216-88)

6) Construction Steel construction welding technical specification (JGJ 81-2002)

7) Selecting steel materials: the column and beam members of the frame are mainly made of Q235B steel, and the quality standard of the steel is in accordance with the technical conditions of ordinary carbon structural steel (GB/T700) and low-alloy high-strength structural steel

According to the regulation of GB/T1591, cold-formed steel adopted by purlines of wall beams also ensures that a cold-formed test is qualified.

8) The adopted 10.9-grade hexagonal high-strength bolt is in accordance with the regulations of the existing national standard of high-strength large hexagonal head bolt for steel structure (GB/T1228), high-strength large hexagonal head nut for steel structure (GB/T1229), high-strength gasket for steel structure (GB/T1230) and technical conditions of the high-strength large hexagonal head bolt, the large hexagonal head nut and the gasket for steel structure.

2. Engineering quality assurance measures

1) And manufacturing and hoisting the steel structure according to the technical requirements of materials, paying off, blanking, assembly and welding which are strictly specified in the specification GB50205-2001 of the construction and quality acceptance of steel structure engineering.

2) The friction contact surface of the component is constructed according to the sand blasting process, and the treated friction surface of the component cannot be painted or stained. The friction coefficient test adopts a bolt test piece, the friction treatment material and the high-strength bolt of the test piece are the same as the friction surface of the member, and the friction coefficient is more than or equal to 0.45.

3) The bolt connecting holes are punched by a steel plate punching machine, and the passing rate of the bolt connecting holes is checked.

4) Hoisting steel columns and other vertical long members, and arranging hoisting points at 2/3 of the length of the columns. And hoisting members such as roof truss beams and the like, wherein the hoisting points are arranged at the positions equidistant from the middle point.

5) When the steel column is aligned and corrected, the influence of wind power, sunlight temperature and temperature difference is noticed. Wind forces above level 5 must not be corrected. And immediately installing the lateral beam or taking a reinforcing measure for the corrected column. The correction is preferably performed in the morning or in a time and environment where the sun is irradiated at a relatively low temperature.

6) The foundation needs to be retested before the steel structure is installed so as to meet the installation requirements, and measurement and correction are carried out in the installation process of the steel structure, and the error is controlled within the specified allowable range.

7) The steel products are inspected in real objects and quality assurance books, and the quality assurance books mainly pay attention to data such as yield point, cold bending, normal-temperature impact toughness, carbon content and the like, and cannot be used if the data do not meet the requirements.

8) Self-checking and mutual-checking are carried out in the manufacturing process of the steel structure, and special checking is carried out according to the steel structure engineering construction and quality acceptance standard GB50205-2001 strictly.

9) And (4) carrying out welding seam flaw detection by butting the H-shaped steel plates, and achieving the quality standard of a secondary welding seam.

10 Protection of finished paint and deformation during construction, acceptance, specification and transportation of steel structure engineering. The components are bound firmly, and the binding position is protected by a rubber pad so as to avoid damaging paint. And the matched transportation frame is manufactured according to the shapes of the transportation vehicles and the components so as to prevent deformation.

11 Before hoisting, the matching condition of the column foundation axis, the column base bolt and the bolt hole of the column bottom plate is rechecked.

12 After the steel column is hoisted, the measuring tool measures and corrects in time to prepare for hoisting the roof truss beam.

4. Safety measures

1. Safety matters in construction process

1) The approach operator should receive training of related professional functions.

2) Personnel entering the field must wear a safety helmet.

3) A TN-S zero connection protection system (namely a three-phase five-wire system) must be adopted in the distribution box on a construction site.

4) The post operation is carried out according to the post operation regulation strictly, so that safety accidents caused by violation of the operation regulation are avoided.

5) The post operator strictly performs post operation according to the operation regulation, and the personnel who do not strictly perform operation according to the operation regulation are seriously treated once being found.

6) The installation of steel column and steel beam is the main framework. The following hoisting sequence principle is followed when the device is installed: firstly, erecting a standard column, then erecting a cross beam, then connecting roof trusses (forming flow line operation) on the ground, and then integrally positioning; firstly, steel columns, rear cross beams and roof trusses are arranged; first the transverse structure, then the planar member.

2. Steel column installation considerations:

1) And (5) rechecking the strength of the steel wire rope and the lifting appliance before lifting, and checking whether the steel wire rope and the lifting appliance have defects and potential safety hazards. And trial hoisting is carried out, the hoisting is stopped when the height of one hoisting end is 100-200 mm, the firmness of the rigging, the stability of the crane and the verticality of the steel column are checked, and then the crane is instructed to slowly descend.

2) After the steel column is hung above the bolts, the operators stand the positions respectively, the column base is stabilized to align the reserved holes in the column foot plate with the bolts, the bolts are inserted, the columns stop falling into the grooves when descending to the adjusting nuts, the crow bars are used for prying the columns, the center lines of the columns are aligned with the center line of the foundation, the column base nuts are screwed, and the lifting hook can be removed safely.

3) For the upright post of a single unstable structure, temporary protection measures of the wind cable are required.

3. Safety measures for preventing crane from tipping

1) The road on the hoisting site must be flat and firm, and the backfill soil and the soft soil layer need to be treated. If the soil is soft, the road should be paved independently. The crane does not have to be parked on a slope for operation, and the two sides of the crane are not allowed to be higher or lower.

2) And overload hoisting is strictly forbidden.

3) And forbidding inclined hanging. The inclined hoisting can cause overload and steel wire rope out of the groove, even cause rope breaking and car overturning accidents. The inclined crane can also cause the heavy object to swing quickly after being separated from the ground, and can hurt people or other objects.

4) The sling of the binding component needs to be calculated, all hoisting tools need to be checked regularly to identify the damaged person, and the binding method needs to be correct and firm to prevent the sling from being broken or slipping from the component during hoisting so as to prevent the crane from being overturned due to weightlessness.

5) Heavy construction equipment of unknown weight is not hoisted.

6) And forbidding hoisting operation under the condition of sixth-level wind.

7) The commander should use the unified command signal, and the signal should be clear and accurate. The crane driver should listen to the command.

4. Safety measure for preventing high-altitude falling

1) When the operator is working at high altitude, the operator must correctly use the safety belt. The safety belt is generally used in a high-hanging and low-hanging mode, namely, a hook ring at the rope end of the safety belt is hung at a high position, and a person operates the safety belt at a low position.

2) When the prying bar is used at high altitude, a person needs to stand stably, and if a scaffold or an assembled component is arranged nearby, the person needs to hold the scaffold with one hand and operate the scaffold with the other hand. The insertion depth of the crow bar needs to be proper, if the crow bar is longer in crow distance, the crow bar needs to be crowed step by step, and the crow bar is not suitable for being urgently required.

3) Ladders for ascending must be strong. When in use, the fixed component must be firmly bound by a rope. The included angle between the ladder and the ground is preferably 65-70 degrees.

4) The operator can not wear the hard sole leather shoes to work high above the ground.

5. Safety measure for preventing falling object from hurting people

1) Tools, parts and the like used by the high-altitude operators are placed in the tool bags worn by the users and cannot be thrown downwards freely.

2) Ground operators should try to avoid staying or passing under the overhead working surface, and also should not stay or pass under the boom or the hoisting member of the crane.

3) After the components are installed, the connection quality must be checked, and only the connection is really safe and reliable, the hook can be loosened or the tool can be fixed during the dismantling.

4) The structure is not fixed and is not accurate to hook, and the hoisting close to the edges and corners must be sleeved.

5) Temporary railings are arranged around the hoisting site, non-workers are prohibited from entering the temporary railings, and idle and miscellaneous personnel cannot get close to the temporary railings.

6. Other safety measures

1) Before construction, safety technology must be carried out group by group, the pertinence of the bottom-delivery content is strong, and the record is made, and the safety responsibility system is defined.

2) The safety information feedback in construction is enhanced, the accident potential in the construction process is continuously eliminated, and the safety information feedback is rapid, which is an important aspect for preventing and controlling the accident.

3) Personnel engaged in high-altitude operations must perform physical examinations. People suffering from hypertension, heart disease, epilepsy, panic disorder and other people who are not suitable for aloft work are not allowed to work aloft work. The high-altitude operators strictly forbid the operation with diseases and the operation after drinking, and do sunstroke prevention and cooling work.

4) The anti-theft work is done, so that the constructor not only needs to install well, but also needs to strengthen the body protection work, and the damage and the mess of outsiders are prevented. For important articles such as steel pipes, machines and parts, special rooms are required to be arranged for locking, keeping, picking and storing so as to complete registration work.

5) Various construction materials need to be orderly stacked in a classified manner, excess materials are required to be periodically recovered, waste materials are timely cleaned, a garbage can is arranged at a fixed point, and the cleanness and the tidiness of a construction site are kept.

6) When the materials are put in storage, the materials must be stacked in different categories, safety inspection work is done, particularly, the gas cylinders are inspected in a key way and registered, and striking fireproof signboards are erected around a dangerous goods storage area. The material must be picked up by a specially-assigned person, cannot be randomly distributed, and is well registered. The distance between the gas cylinders is not less than 5 meters, the distance between the gas cylinders and the open fire is not less than 10 meters, and safety isolation measures are required around the gas cylinders.

7) The fireproof work is done, the relevant fireproof regulations of construction sites are strictly followed, fireproof facilities are strengthened, and fire accidents are avoided. When the fire operation such as welding or cutting is carried out on a construction site, the danger of environmental pollution on the upper and lower sides of the periphery needs to be noticed in advance so as to prevent fire. Fire-fighting equipment such as fire extinguishers and fire-fighting water pipes must be arranged in a working area and a living area, protection measures for strengthening strong wind are taken, before the strong wind comes, scattered articles on the site are concentrated, construction materials and tools are recycled in a room, construction waste is concentrated and placed in a temporary storage yard, and installed structural members are fixed in nodes. The overall structure must be reinforced and stabilized.

5. Environmental protection measure

1) Waste materials, spare parts, packaging bags and the like in the production area are recycled and cleaned in time, and the sanitation of a construction site is well protected, so that the surrounding landscape and the environment are protected from being damaged.

2) Harmful substances (such as fuel, oil, waste materials, garbage and the like) generated in a production area are stored in a centralized manner, and are transported to a specified place for burying after being treated, so that the ecological environment is prevented from being damaged.

3) The station is provided with the sprinkler, the site is sprayed with water and removed dust at regular time, and the construction raise dust is prevented from influencing the surrounding environment.

4) Reasonable arrangement of operation time, alternate arrangement of low-noise work, attention to mechanical maintenance, noise level reduction, avoidance of vehicle access frequency at night as far as possible, and avoidance of arrangement of large-noise processing work at night.

5) When the mechanical transport vehicle passes through the residence of the residents, the mechanical transport vehicle decelerates and slowly moves, and whistling is forbidden.

6) After construction is finished every day, the site is cleaned, and various machines and tools on the site are collected and processed by special persons, namely 'cleaning materials and cleaning materials when people walk away from the site'.

7) The machine tool is washed clean after being used, and is placed in a specified area in a standard collecting mode, and the machine tool is well protected without affecting the surrounding environment.

6. Resource saving

According to the invention, through the research on the selection of the material bin greenhouse framework material and the construction process, and the application of the construction method to the construction practice, the construction process is innovated, the application of the novel material bin greenhouse bolt connection process in engineering construction is promoted, the waste loss of the material bin greenhouse is effectively reduced, and the investment of the electric power cost is reduced; meanwhile, the construction method adopts bolt connection, the work efficiency is improved by 17% under the condition of the same constructor, and labor resources are saved.

7. Benefit analysis

1. Economic benefits

1) A rotatable type steel silo greenhouse installation construction method comprises the following steps: the bin frameworks are connected through bolts, the material turnover rate is improved, 121.8 tons of steel required by processing a 30 x 120m bin greenhouse are processed, 89.2 tons of steel can be turned over for more than 3 times, the steel cost can be saved by 35.68 ten thousand yuan for a single bin greenhouse, and the steel cost can be saved by 4 mixing stations in the mark section.

2) A rotatable type steel silo greenhouse installation construction method comprises the following steps: the feed bin skeleton adopts bolted connection to reduce electric power cost and drops into, adopts the welded connection technology according to conventional feed bin skeleton, need be equipped with 5 welding machines at least and construct simultaneously, 1 month when installing a feed bin big-arch shelter. The electricity consumption is 450 degrees every day according to the calculation of the working time of 3 hours of welding of a single welding machine every day. By adopting bolt connection, each stock bin greenhouse can save 1.4 ten thousand yuan, and the total mixing station of the mark section of the inventor has 4 bases, so that the electric power cost can be saved by 5.6 ten thousand yuan.

3) A rotatable type steel silo greenhouse installation and construction method comprises the following steps: the storage bin framework is connected through the bolts, so that the construction period can be shortened, the labor cost input is reduced, at least 10 workers need to be equipped for simultaneous construction according to the conventional storage bin framework installation process, and 1 month is needed when one storage bin greenhouse is installed. By adopting bolt connection construction, the construction period can be saved by installing each stock bin greenhouse for 5 days, the labor cost can be saved by 3000 yuan per day according to the calculation of 300 yuan per day of labor cost per person, the labor cost can be saved by 1.5 yuan per day for each stock bin greenhouse, 4 mixing stations are shared by marking sections, and the labor cost can be saved by 6 yuan.

4) The total saving = 142.7 ten thousand yuan increased material turnover rate + 5.6 ten thousand yuan saved power cost + 6 ten thousand yuan saved labor cost =154.3 ten thousand yuan, and the economic benefit is remarkable.

2. Social benefits

The construction method is successfully practiced and applied to a western Showa high-speed SG5 standard of seven companies in Ten offices of Central iron, and the rotatable type steel silo greenhouse installation construction method consisting of the H-shaped steel silo framework and the bolt connection construction method is adopted, so that the problems of incapability of material turnover construction, slow construction progress, high construction risk, high labor input and the like in the traditional silo greenhouse installation process are solved, the construction quality of the silo greenhouse is guaranteed, the construction progress is accelerated, the material loss is reduced, the labor cost is reduced, the construction risk is reduced, a more advanced construction method is provided for similar engineering construction, and the popularization and application prospects are wide.

8. Engineering examples

The west Showa high speed SG5 standard, standard section total length 25.529km, concrete total amount 141.8 km of ³ In the process of planning construction projects, 4 mixing stations are planned to be built for ensuring the construction progress, the investment of temporary construction cost is extremely large, in order to reduce the investment of temporary construction cost, subject groups are combined with the actual situation of a field, technical personnel are actively organized to conduct research and innovation, relevant experts are invited to evaluate the field and a scheme, H-shaped steel is adopted as a framework of the storage bin greenhouse, and a bolt connection mode is adopted for the construction method of the turnover type steel storage bin greenhouse.

After practice, a construction method for installing the turnover type steel silo greenhouse is applied. Through on-site observation, the mixing station completely withstands the examination of windy weather after finishing the bin greenhouse up to now, and the condition of normal use under severe weather is met. Through comparative analysis of material consumption, environmental protection and safety, construction progress, cost and the like, the construction method greatly reduces the input of human resources in the construction process, improves the construction progress, reduces energy consumption, has good social benefit and is worthy of popularization.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims (3)

1. The utility model provides a can have enough to meet need type shaped steel feed bin big-arch shelter installation construction method, its characterized in that includes:

s1, preparation before construction

S11, flattening and rolling a mixing station field, and then carrying out stone throwing and gravel replacement;

s12, filling the mixing stations in different areas;

s13, according to the construction organization plan, protecting the site buildings and setting obvious marks for cables in the air in the operation range;

s2, excavating foundation

Setting out a layout by using a total station, and arranging a concrete independent foundation on a steel structure upright post of the material shed;

s3, embedding foundation bolts in advance

Checking the column base positioning axis of foundation construction, and embedding foundation bolts;

s4, processing and entering of the component

The materials are processed by a processing plant according to the installation sequence and supplied in a set; stacking the components to a specified position according to the field plan;

s5, hoisting the steel beam;

s6, installation correction

Checking and correcting the verticality of the steel column by using a total station or a plumb bob, and immediately fixing after correction;

s7, high-strength bolt construction

All the components are connected by bolts;

s8, hoisting roof beam

The roof beam installation process is as follows: ground assembly → inspection → air hoisting;

s9, purlin installation

Hoisting purlines by adopting a method of one hook for multiple hoisting or hoisting in a sheet manner, checking and correcting straightness by using a stay wire and a steel ruler, and finally fixing by using bolts;

s10, mounting roof and wall panels

S101, storing requirements on site;

s102, installing a pressed tile roof;

s103, installing the notice;

s11, self-checking and cleaning

Carrying out comprehensive inspection on the bin greenhouse after the construction of the bin greenhouse is finished; after the installation work is finished, sundries are cleaned up, and dust is guaranteed to be free.

2. The construction method for installing the turnover type steel silo greenhouse as claimed in claim 1, wherein the step S102 of installing the pressed tile roof comprises the following steps:

s1021, lapping the plate ribs back to the wind direction;

s1022, the plates are connected in a rib mode, and the female ribs are buckled on the male buckles;

s1023, bending the steel plate upwards by 80 degrees at the ridge and the drawing mark to form a water baffle, and forming a water dripping line by 10 degrees at the lower part of the eaves gutter and the lower end;

s1024, reserving a gap of about 100mm between two steel plates at the ridge so as to insert an upward bending tool, and outwards raising a profiled steel plate at the gutter by 100mm-200mm;

and S1025, fixing the screw to be vertical to the steel plate and the purline and aligning the fixing screw to the center of the purline, and hanging the line before nailing to ensure that the nailing line is straight.

3. The construction method for installing and constructing the turnover type steel silo greenhouse as claimed in claim 1, wherein the concrete implementation steps of S8 roof beam hoisting are as follows:

s81, checking the component and the high-strength bolt connection friction surface before ground assembly; when the ground is assembled, the oil-free sleepers are adopted to cushion the components, the two sides of the components are supported by wooden bars to form an assembling platform, the platform is provided with at least 4 bearing points, the solid web beams are all placed on the platform and are assembled according to the serial numbers of drawings, the solid web beams are firstly connected by high-strength bolts and are firstly screwed, and the solid web beams are finally screwed by a force measuring wrench after being inspected to be accurate; repeating the steps, assembling the whole row, checking the hoisting points, and aligning the datum and the central line;

s82, connecting the high-strength bolts meeting the use requirements, wherein the high-strength bolts freely penetrate into the holes and have consistent penetrating directions; the high-strength bolt is screwed outwards from the center by a kilogram of electric wrenches, the screwing is divided into initial screwing and final screwing, and the initial screwing force is preferably 50% of the final screwing force; when a gap exists on the contact surface of the high-strength bolt, the gap smaller than 1.0mm can be left untreated; for a gap of 1.0-3.0mm, grinding the raised side into a slope of 1; for the cushion plate added when the gap is larger than 3.0mm, the processing method of the cushion plate is the same as that of the contact surface;

s83, hoisting by adopting a single truss, binding the hoisting points by adopting two points, and using soft material pads for the binding points; when the steel beam is lifted, the steel beam is lifted to about 50cm away from the ground, the center of the steel beam is aligned with the center of the installation position, then the steel beam is lifted to be above the column top, then the steel beam is rotated by a sliding rope to be aligned with the column top or a bracket, hooks are slowly dropped, the steel beam is immediately braked when just contacting the column top, the steel beam is aligned with reserved bolt holes, bolts are inserted into the holes, and are temporarily fixed by initial screwing, and meanwhile, the verticality is corrected and finally fixed.

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