CN103362314A - Washing selecting coal plant modularization building method - Google Patents
Washing selecting coal plant modularization building method Download PDFInfo
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- CN103362314A CN103362314A CN2013103360697A CN201310336069A CN103362314A CN 103362314 A CN103362314 A CN 103362314A CN 2013103360697 A CN2013103360697 A CN 2013103360697A CN 201310336069 A CN201310336069 A CN 201310336069A CN 103362314 A CN103362314 A CN 103362314A
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Abstract
A washing selecting coal plant modularization building method is characterized by comprising the following steps that first, a main plant house outer frame module is mounted, a traveling trolley is mounted; second, washing selecting coal equipment which needs to be mounted is divided into a plurality of sets according to a washing selecting coal production technology; third, a steel structure frame type mounting frame module is designed for each set of washing selecting coal equipment; fourth, the mounting frame modules are mounted in advance or conveyed into the mounted main plant house outer frame module to be mounted on site, mounting of the mounting frame modules is completed; columns of the mounting frame modules are fixedly connected with a foundation, so the vibration generated by the washing selecting coal equipment is directly transmitted to a base, influence of generated vibration on the main plant house outer frame module is avoided, service life of the main plant house outer frame module is prolonged; fifth, the washing selecting coal equipment is arranged on the mounting frame modules, and machine test operation is carried out. According to the washing selecting coal plant modularization building method, cost is lowered, resonance is reduced, and service life is prolonged.
Description
Technical field
The present invention relates to a kind of building and equipment mounting technique, the method for planting is built in the installation of especially a kind of steel structure frame formula factory building and equipment thereof, specifically a kind of washing coal works modular construction method.
Background technology
At present, coal preparation plant's main building is the building of putting cleaning unit by choosing (washing) coal technological requirement, generally adopt at present frame type reinforced concrete structure or frame steel structure, because the cleaning unit volume is large, weight is heavier, and can produce strong vibrating load in the course of the work, when the vibration frequency of some equipment is identical with the frequency of mill construction, and will produce resonance.This resonance not only affects equipment and operating personnel's normal operation, and mill construction generation vibration is caused destruction.Therefore, the design unfavorable factor under the load action of will considering to resonate, thereby improved steel content and construction costs.
Traditional frame type coal preparation plant main building, because its design concept, manufacturing technology there is no too large change, and along with the continuous expansion of building size, conventional steel structure coal preparation plant main building problem becomes increasingly conspicuous, and is mainly manifested in following several respects:
1) factory building reasonable operating period decrease under long-term vibration fatigue is as normally keeping more than 20 years accelerated depreciation, the reduction of factory building economic worth by 50 year operating period actual operating period of design;
2) because factory building primary structure member is loosening, amplitude strengthens when equipment and factory building resonance, causes equipment to accelerate to damage.Maintenance and reinforcement frequently generally speaking, otherwise can affect production, can cause serious accident when serious;
3) long-term vibration limits causes factory building, equipment all to need to keep in repair frequently, and maintenance cost strengthens, and causes simultaneously production suspension induced losses;
4) under long-term vibration fatigue, each member of agent structure can produce the change of metallic atom arrangement architecture on microcosmic, the problems such as strength decreased occur.The micro-damage situation of each building interior all can't be understood by actual measurement in present countries in the world in this respect, can only see structural damage from macroscopic view, but its inside causes huge potential safety hazard can not be ignored;
5) the process flow layout is unreasonable, the energy consumption waste.Therefore, how to overcome washing coal works vibration, noise is large, the factory building life-span is short, and the problem that maintenance cost is large is the task of top priority.
Summary of the invention
The objective of the invention is to exist vibration, noise large for existing washing coal works owing to design is unreasonable, the factory building life-span is short, the problem that maintenance cost is large, inventing a kind of mill construction with the outside separates fully with inner production structure, external structure is not born the vibrations load, and the washing coal works modular construction method of the negative effect of decrease vibrations is arranged.
Technical scheme of the present invention is:
A kind of washing coal works modular construction method is characterized in that it may further comprise the steps:
At first, finish the installation of main building outside framework module, and in mounted main building outside framework module, install driving, in order to create conditions for the lifting of cleaning unit installing rack module and washed coal equipment;
Secondly, the washed coal equipment of according to the washed coal production technology needs being installed is divided into some groups;
The 3rd, be every group of washed coal device design steel structure frame formula installing rack module, with reference to the size of structural steel design handbook with post, beam and the steel grating of the weight calculative determination installing rack module of the washed coal equipment of installing;
The 4th, the installing rack module installed in advance or be transported to carry out the scene in the mounted main building outside framework module and install, finish the installation of installing rack module; The post of installing rack module should be fixedly linked with ground, so that the vibration that directly washed coal equipment is produced directly imports in the basis, prevents that the vibration that produces from the impact of main building outside framework module, prolonging the application life of main building outside framework module;
The 5th, washed coal equipment is installed on the installing rack module, can the test-run a machine operation.
Between post-beam in the described installing rack module, between post-post, the natural frequency district of the washing appliance installed to avoid of beam-be connected with between dying horizontal truss and vertical truss.
Described steel grating is at least three limit braced structuress, to improve the rigidity of steel grating, avoids the resonance frequency district.
Described main building outside framework module and the separate construction of cleaning unit installing rack module, the vibration of the washed coal equipment that cleaning unit installing rack module is born is directly imported in the residing ground of cleaning unit installing rack module, the main building outside framework is not had a direct impact.
Beneficial effect of the present invention:
The present invention has broken traditional design mode, separates fully with inner production structure by the mill construction with the outside, and external structure is not born the vibrations load, and the negative effect of decrease vibrations is arranged.
1) effectively reduces the harmful effect that shock-effect causes building structure, equipment etc., reduced whole maintenance cost, prolonged factory building, equipment life, substantially solved the tired harmful effect to the mill construction degree of safety of vibrations;
2) the finished product module is higher in design, in-depth, processing, construction each side production efficiency, and cost is more economized;
3) effectively module research and development product reduces steel using amount to greatest extent, saves cost;
4) modular product has complete supporting production program, traffic program and installation method at links, and workman operation is more skilled, and quality and precision can reach level advanced in the world under the constant condition of cost.
5) by the factory building module being optimized layout, Accurate Analysis, deep research and calculating, reduce factory building height and material lifting height, reduced floor space, saved steel using amount, saved energy consumption.
6) the Modular Coal Washing Plant main building has effectively solved the problems that traditional large-scale steel structure coal preparation plant main building faces, and becomes the preferential selection of the industries such as coal, cement, electric power.
The present invention is made to load and the vibrating load that some module device supports produce to bear equipment with equipment according to technological requirement and performance.And become portal-rigid frames independently to bear building load plant designing, frame construction is resolved into equipment supporter and portal-rigid frames, thereby avoided the resonance load.
1, full assembly structure all adopts steel work from inside to outside, and bean column node is high-strength bolt and connects, and goes along with sb. to guard him and adopts the insulation color steel, and all batch production productions are only assembled in the building site and to be got final product.
2, outer portal-rigid frames and inner each module component from, module group and equipment are integrated, mutually disengaging between the module group, favourable avoiding because of influencing each other of producing between vibratory equipment.
3, greatly improved the impact of vibration equipment on steel-structure factory building itself.Vertical force and vertical motion aspect because the equipment force path is more directly simple, are to pass to the basis by girder-post basically, even equipment support directly is fixed on capital, more go up each intermodule disengaging, and the vibration effect of so mutual stack drops to minimum; Horizontal force and horizontal vibration aspect, because basic upper prop-beam, post-post supports morely between beam-beam, be equivalent to horizontal truss and vertical levels truss, rigidity is very big, has substantially avoided equipment natural frequency district.
4, its overall structure steel using amount is less than frame construction, from structural configuration, and the structural configuration that modularization coal preparation plant separates, outside framework is portal frame, mainly bears external load (wind, snow, crane, live load); The main load bearing equipment load of internal mode blocking support (comprise equipment self-weight, dynamic load, the material load, part is overhauled load) because floor all adopts steel grating on its support, a lot of from heavy and light; And the equipment load mainly be directly by post or by girder to the direct power transmission of post to basic, so support primary and secondary structural section is all little much than frame construction.By statistics measuring and calculating, the comprehensive steel using amount of its main structure can drop to 18～23kg/m3 from 20～25kg/m3 of framework, is about 2%-4%.
5, each technical module is transformed, and moves very convenient.
Description of drawings
Fig. 1 is the module arrangement schematic diagram of the embodiment of the invention.
Fig. 2 is arrangement of reinforcement envelope and the steel work stress ratio illustration intention of the embodiment of the invention.
Fig. 3 is the bending moment envelope diagram of the embodiment of the invention.
Fig. 4 is the three-dimensional structure schematic diagram of an installing rack module of the embodiment of the invention.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
Shown in Fig. 1-4.
A kind of washing coal works modular construction method, it may further comprise the steps:
At first, finish the installation of main building outside framework module, and in mounted main building outside framework module, install driving, in order to create conditions for the lifting of cleaning unit installing rack module and washed coal equipment;
Secondly, the washed coal equipment of according to the washed coal production technology needs being installed is divided into some groups;
The 3rd, be every group of washed coal device design steel structure frame formula installing rack module, with reference to the size of structural steel design handbook with post, beam and the steel grating of the weight calculative determination installing rack module of the washed coal equipment of installing; Between post-beam in the described installing rack module, between post-post, the natural frequency district of the washing appliance installed to avoid of beam-be connected with between dying horizontal truss and vertical truss.Described steel grating is at least three limit braced structuress, to improve the rigidity of steel grating, avoids the resonance frequency district.
The 4th, the installing rack module installed in advance or be transported to carry out the scene in the mounted main building outside framework module and install, finish the installation of installing rack module; The post of installing rack module should be fixedly linked with ground, so that the vibration that directly washed coal equipment is produced directly imports in the basis, prevents that the vibration that produces from the impact of main building outside framework module, prolonging the application life of main building outside framework module;
The 5th, washed coal equipment is installed on the installing rack module, can the test-run a machine operation.
Maximum characteristics of the present invention are that main building outside framework module and cleaning unit installing rack module can separately be constructed, the vibration of the washed coal equipment that cleaning unit installing rack module is born is directly imported in the residing ground of cleaning unit installing rack module, the main building outside framework is not had a direct impact.
Below in conjunction with an example this bright implementation step is further described
Typical modularization coal preparation plant structural layout plan as shown in Figure 1.
Calculated examples
Now take her eastern coal group Raolinite ore dressing plant main building as example, calculate.This project is built the place in Jungar of Inner Mongolia Xue Jiawan town, is modular organization.Go along with sb. to guard him for the portal frame sealing outward, interior is polytechnic standalone module.The outside framework axial length is 98m.Span is 29m, highly is 35m.The outside framework area is 2842m2, approximately 99500m3.Band 20T traversing crane.The inside contains 3 module device supports, A module primary election system; The B module is selected system and press filtration workshop module again.3 modules are respectively independent steel frame equipment supporter.
Outside framework calculates
The design Main Basis:
" loading code for design of building structures " (GB50009-2001); 2006 editions
" seismic design provision in building code " (GB50011-2010);
" Code for design of steel structures " (GB50017-2003);
" Steel Portal Frames tecnical regulations " (CECS102:2002); Be output as by common software result of calculation:
---total information----
Structure types: Steel Portal Frames
Design specifications: calculate by " Steel Portal Frames tecnical regulations "
Coefficient for importance of structure: 1.00
Node sum: 9
Post number: 4
Beam number: 4
Bearing constraint number: 2
Standard section sum: 6
Live load computing information: consider the unfavorable layout of live load
Wind load calculating information: calculate wind load
Steel: Q235
Beam column deadweight computing information: the deadweight of post beam is all calculated
The axial deformation of dead load lower prop: consider
Beam column is from the re-computation enhancement coefficient: 1.20
Basic calculation information: Calculating Foundation not
Beam rigidity enhancement coefficient: 1.00
Steel work net cross-sectional area and gross cross-sectional area ratio: 0.85
Resistance to overturning in the face of portal-rigid frames Liangping: by the checking computations of press-bending member
Steel work is subjected to stay column to allow slenderness ratio: 400
The steel work compression column is allowed slenderness ratio: 180
Girder steel (permanent+as to live) is allowed deflection span ratio: l/180
Capital permissible level displacement/post is high: l/60
Geological process is calculated: the calculated level geological process
Calculate shake type number: 3
Earthquake intensity: 7.00
Site Soil classification: III class
Impost nodes: 0
Classification of design earthquake: first group
Cycle reduction coefficient: 0.80
Seismic forces computational methods: modal analysis method
Structural damping ratio: 0.050
Press GB50011-2001 earthquake sheet enhancement coefficient 1.000.
Arrangement of reinforcement envelope and steel work stress ratio figure see Fig. 2, and bending moment envelope diagram as shown in Figure 3.
Module is calculated (calculating as an example of A module previous cleaning system example)
A module threedimensional model such as Fig. 4.
The structure design total information
Total information ... ... ... ... ... ... ... ....
Computing information:
The first step: data preliminary treatment
Second step: calculate the information such as every Stiffness Center, degree of freedom, quality
The 3rd step: the assembling stiffness matrix also decomposes
FALE degree of freedom Optimal scheduling
Beginning Time : 11:17:10.92
End Time : 11:17:11.5
Total Time(s) : 0.13
The assembling of the total just battle array of FALE
Beginning Time : 11:17:11.5End Time : 11:17:11.17Total Time(s) : 0.12
The total just battle array of VSS LDLT decomposes
Beginning Time : 11:17:11.17End Time : 11:17:11.19Total Time(s) : 0.02
The VSS model analysis
Beginning Time : 11:17:11.19End Time : 11:17:11.19Total Time(s) : 0.00
Formation seismic load vector
Formation wind load vector
Formation vertical load vector
VSS LDLT C＋＋ language
Beginning Time : 11:17:11.52End Time : 11:17:11.52Total Time(s) : 0.00
The 4th step: calculate rod member internal force
Time started: 11:17:11
The mobile load random loading calculates
Calculate rod member internal force
Close Date: 2010.9.30
Time: 11:17:15
Total time spent: 0:0:6
Vibration analysis
The vibration analysis test purpose
(1) the test vibration sieve passes to the acceleration of flooring, in order to analyze vibrosieve isolation spring working condition;
(2) tested steel floor beam Vibration Condition is in order to analyze its modal parameter.
(3) tested steel bed board Vibration Condition in order to analyze its modal parameter, is judged its vibration cause.
The test main contents
1. equipment base vibration-testing;
2. equipment platform girder steel vibration-testing;
3. equipment platform steel bed board vibration-testing.
Tester
Vibration testing instrument adopts eastern magnificent DH5935N dynamic signal testing and analytical system, and this instrument has the functions such as Dynamic Data Acquiring, the computing of data calculus, FFT conversion, model analysis, power spectrumanalysis.
The shaker vibration situation
Washed coal equipment peak acceleration peak value 38.6m/sec
2, oscillation intensity is about 4.
Rotating speed be 900 turn/min about.
About vibration amplitude 10mm.
The test of equipment base Vibration Condition:
Spring soffit bearing arranges acceleration transducer on vibrosieve casing right side, measures the Vibration Condition of right side spring lower support.Spring soffit bearing arranges acceleration transducer in the left side.
The girder steel vibration Frequency Analysis
Start to normal operation from machine, experienced the frequency sweep rate process from 0 frequency to design frequency, in this process, the structure frequency that approaches with frequency sweep will be excited, and reach resonance peak.Intrinsic frequency with this identifiable structures.The front 6 rank vibration frequencies of girder steel of software identification see the following form.
The girder steel vibration frequency
| Order | 1 | 2 | 3 | 4 | 5 | 6 |
| Frequency (Hz) | 7.3 | 18.1 | 24.0 | 31.8 | 33.2 | 35.6 |
Girder steel Vibration Condition (starting state) conclusion:
In the situation that present state of runtime machine, each rank vibration frequency of beam avoids forced vibration frequency, has avoided resonance region.
Equipment base support steel beam Vibration Condition test-normal operating condition:
The steel diaphragm supporting condition is on the impact of mode
In some zone, owing to the layout reason of beam, may cause bed board to be in three limits or four limit holding states.This will cause the natural frequency of steel diaphragm to change.
Following table has provided that length 2000mm steel diaphragm supports on three limits, the frequency of four limits under supporting and the contrast situation of both sides support lower frequency:
Supporting condition is on the impact of steel diaphragm vibration frequency
| Order | 1 | 2 | 3 | 4 | 5 | 6 |
| Frequency is supported on both sides | 6.2 | 17.1 | 79.9 | 114.3 | 115.3 | 116.9 |
| Frequency is supported on three limits | 10.2 | 114.4 | 115.2 | 119.7 | 127.6 | 139.9 |
| Frequency is supported on four limits | 113.7 | 117.4 | 123.9 | 134.9 | 151.3 | 173.7 |
As seen, the difference of supporting condition is also influential to the vibration characteristics of steel diaphragm.
Steel grating is analyzed conclusion:
The natural frequency of steel diaphragm changes with length and supporting condition, and covibration very easily occurs, and need arouse attention during design.
Its improvement project is to change supporting condition, cancels former both sides and supports steel grating, adopts the support of four limits, three limits to support steel grating as far as possible, will improve steel grating rigidity like this, avoids the resonance frequency district.
Analysis of economic index (seeing the analysis of economic index table)
The economic and technical norms analytical table
In sum, Modular Coal Washing Plant main building design of the present invention and building technology all Coalmine Coal Preparation Plants enforcements at home and abroad.Identify project and implement to meet country and local industries policy; Meet region ecological environment function zoning, land use planning and Correlative plan requirement; Waste gas is less on the surrounding air environment impact after administering, and can satisfy the functional areas requirement; Noise is less to surrounding environment influence after implementing every prophylactico-therapeutic measures; Solid waste does not exert an influence to the surrounding environment health after properly disposing; The project implementation is on surrounding environment and protect the target impact all less on every side.Structure is moulded to power vertical motion aspect, because the equipment force path is more directly simple, be to pass to the basis by girder-post basically, even equipment support directly is fixed on capital, more go up each intermodule and break away from, mutually mutual like this superpositing vibration impact drops to minimum; Horizontal force and horizontal vibration aspect, because basic upper prop-beam, post-post supports morely between beam-beam, be equivalent to horizontal truss and vertical levels truss, rigidity is very big, has substantially avoided equipment natural frequency district.
Actual tests proves overall structure steel using amount of the present invention less than steel framed structure, from structural configuration, and the structural configuration that modularization coal preparation plant separates, outside framework is portal frame, mainly carries external load (wind, snow, crane, live load); The main load bearing equipment load of internal mode blocking support (comprise equipment self-weight, dynamic load, the material load, part is overhauled load) because floor all adopts steel grating on its support, a lot of from heavy and light; And the equipment load by mainly be directly by post or by girder to the direct power transmission of post to basic, so support primary and secondary structural section is all little much than frame construction.By statistics measuring and calculating, the comprehensive steel using amount of its main structure can be from 20～25kg/m3 of steel frame, drops to 18～23kg/m3. approximately 2～4%.The present invention has reduced the vibration effect of vibrating load to mill construction and equipment supporter structure generation, has eliminated resonance, has changed greatly working environment, has prolonged the application life of building and equipment.The present invention can also effectively utilize the interior space, makes apparatus arrangement compacter, and handled easily has increased service clearance, has improved the in-house operation environment.Because building construction separates construction with equipment supporter, equipment is installed and is not interfered with each other with construction of hydropower, thereby has shortened the construction period greatly, has reduced the potential safety hazard in the work progress, has reduced construction cost.
The present invention and frame-generic processing, construction technology compare:
Modular organization of the present invention has been broken traditional design, Construction Mode, soon the external structure of coal preparation plant's main building is separated fully with the inner structure that is used for support apparatus and is organized production and construction by the characteristics of module, and it has, and industrialization degree is high, the crudy of steel member is high; The operation of flowing water crossed construction is launched by module in the job site, has greatly shortened the construction period.
The more conventional common steel frame main building of the present invention is mainly reflected in the following aspects in the advantage aspect processing, the construction:
Modular main building steel work of the present invention has in the advantage aspect making, the processing:
1, modular main building outside framework of the present invention and inner frame can be according to site operation progress separate machined, and progress is independent of each other; And relatively immobilization of the steel member of common multistory frame main building processing generally is the steel column of processing first one deck, and then process mating is with the girder steel of layer.
2, the structure of modular main building outside framework module of the present invention generally adopts welded H section steel, can save steel using amount.
3, the employing of the construction module of modular main building support apparatus of the present invention is hot rolled H-shaped, but the process velocity of Effective Raise steel member.
The characteristics of modular main building steel work of the present invention aspect construction have:
The construction of modular main building steel work and conventional common steel frame main building steel work have following features comparing aspect the construction:
Modular organization can be realized the flowing water crossed construction.
Each module of modular main building steel work is installed and can be carried out respectively according to field condition, for the flowing water crossed construction provides advantage: the continuous productive process method of each module: the construction of modular main building steel work is divided into two flowing water sections, i.e. the inner frame part of the outside framework of main building part and equipment.Can first the outside framework of main building be installed separately during construction, then utilize the frame construction that each EM equipment module is installed in driving in the main building.
The erection sequence of main building outside framework module is: steel column installation → roof girder installation → crane girder is installed → is driven a vehicle installation → purlin installation → on-the-spot finish paint application → colored steel and goes along with sb. to guard him installation.
After the crane girder of main building outside framework installs, the installation that can drive a vehicle, each EM equipment module can utilize driving to install in the factory building, because the erection sequence of module is independent of each other, so three modules can be installed simultaneously or successively according to field condition.
The frame construction mounting method of EM equipment module:
⑴ in the planar range of framework, considers the resistance to overturning in the Steel Structure Installation process, and erection sequence is generally by expansion around the mediad, first from the centre, take the post net of an internode as the lifting unit, lifts first post, rear hoisting beam, then to around expansion.
⑵ in the facade scope of framework, and all members are as a flowing water section in the joint steel column height, and erection sequence is as follows:
N joint steel frame installs and prepares → install the formations steel frame → node bolts such as ladder scaffolding → fitting operation platform → erection column, beam, support temporary fixed → check that verticality, absolute altitude, displacement → draw proofread and correct to tighten eventually with wire rope → Integral correction → high-strength bolt consolidate → to connect post welding → beam welding → ultrasonic testing/ ultrasonic examination → dismounting correction and with wire rope (whole module installation) the interior driving of factory building is installed subsequently, then utilize the interior structure of driving a vehicle the erection equipment module of main building.
Modular main building steel work of the present invention and frame-generic formula main building compare aspect construction
1, construction technology relatively
Each module of modular main building steel work is installed the technique that can adopt according to field condition the flowing water crossed construction, so this job practices has shortened installation period greatly.And common composite steel framework main building is installed and must successively be carried out, and the installation of every layer of steel frame also will be subjected to the restriction of equipment and lifting condition etc., and therefore the construction period of common composite steel framework main building is long than the construction period of modular main building.
The modular main building can install the main building driving first after frame module is installed outside, then utilizes driving to carry out lifting, the installation of the construction module of each equipment in the factory building, thereby has saved machinery, measure cost.
2, economy and duration are relatively
Module-type steel structure main building and ordinary steel framework main building economy, duration contrast table see the following form (take advanced age rock coal preparation plant main building as example).
| Project | The module type steel main building | Ordinary steel framework main building | Reduced rate % |
| Manually, the mechanical expense | 52.6 ten thousand | 79.7 ten thousand | 34 |
| Duration | 90 days | 150 days | 40 |
The part that the present invention does not relate to all prior art that maybe can adopt same as the prior art is realized.
Claims (4)
1. washing coal works modular construction method is characterized in that it may further comprise the steps:
At first, finish the installation of main building outside framework module, and in mounted main building outside framework module, install driving, in order to create conditions for the lifting of cleaning unit installing rack module and washed coal equipment;
Secondly, the washed coal equipment of according to the washed coal production technology needs being installed is divided into some groups;
The 3rd, be every group of washed coal device design steel structure frame formula installing rack module, with reference to the size of structural steel design handbook with post, beam and the steel grating of the weight calculative determination installing rack module of the washed coal equipment of installing;
The 4th, the installing rack module installed in advance or be transported to carry out the scene in the mounted main building outside framework module and install, finish the installation of installing rack module; The post of installing rack module should be fixedly linked with ground, so that the vibration that directly washed coal equipment is produced directly imports in the basis, prevents that the vibration that produces from the impact of main building outside framework module, prolonging the application life of main building outside framework module;
The 5th, washed coal equipment is installed on the installing rack module, can the test-run a machine operation.
2. washing according to claim 1 coal works modular construction method is characterized in that between the post-beam in the described installing rack module, between post-post, beam-be connected with the natural frequency district of the washing appliance that horizontal truss and vertical truss installed to avoid between dying.
3. washing according to claim 1 coal works modular construction method is characterized in that described steel grating is at least three limit braced structuress, to improve the rigidity of steel grating, avoids the resonance frequency district.
4. washing according to claim 1 coal works modular construction method, it is characterized in that described main building outside framework module and the separate construction of cleaning unit installing rack module, the vibration of the washed coal equipment that cleaning unit installing rack module is born is directly imported in the residing ground of cleaning unit installing rack module, the main building outside framework is not had a direct impact.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105421792A (en) * | 2015-12-15 | 2016-03-23 | 安徽伟宏钢结构集团股份有限公司 | Lifting construction process of modular steel structural components |
| CN106759862A (en) * | 2016-11-23 | 2017-05-31 | 同济大学建筑设计研究院(集团)有限公司 | A kind of multistage assembled lattice frame building structure |
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| CN103362314B (en) | 2015-12-09 |
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Address after: 221004 No. 9, landscape road, Xuzhou Economic Development Zone, Jiangsu, China Patentee after: HUZHOU ZM-BESTA HEAVY STEEL STRUCTURE CO., LTD. Address before: 221004 No. 9, landscape road, Xuzhou Economic Development Zone, Jiangsu, China Patentee before: Xuzhou ZM-besta Heavy Steel Structure Co.,Ltd. |