CN105133677B - Foundation of wind-driven generator unit hardened system and reinforcement means - Google Patents
Foundation of wind-driven generator unit hardened system and reinforcement means Download PDFInfo
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- CN105133677B CN105133677B CN201510509840.5A CN201510509840A CN105133677B CN 105133677 B CN105133677 B CN 105133677B CN 201510509840 A CN201510509840 A CN 201510509840A CN 105133677 B CN105133677 B CN 105133677B
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Abstract
The invention belongs to wind power generator group strengthening of foundation technical field, be specifically related to a kind of foundation of wind-driven generator unit hardened system and reinforcement means.Newly-built reinforced concrete foundation is connected with former blower fan reinforced concrete foundation by implanting reinforcing bar, annular steel girder erection is outside foundation ring, arching pressure plate is uniformly distributed on the outer surface of foundation ring, upper trapezoid regulation cushion block and lower trapezoid regulation cushion block are between arching pressure plate and annular girder steel, and upper lower trapezoid spacer block is arranged over locking bolt；Upper trapezoid regulation cushion block and lower trapezoid regulation cushion block are uniformly installed between annular girder steel and arching pressure plate, the reserved fabrication hole utilizing upper trapezoid regulation cushion block and the screwed hole coordinated with locking bolt use drill rod or regulation instrument to adjust lower trapezoid regulation cushion block, and by 2 locking bolts, it is locked, in like manner by 2 locking bolts, upper trapezoid is regulated cushion block locked.The present invention's is reasonable in design, safe and reliable, and effect is obvious, and cost is controlled, economic and practical.
Description
Technical field:
The invention belongs to wind power generator group strengthening of foundation technical field, be specifically related to a kind of foundation of wind-driven generator unit hardened system and reinforcement means.
Background technology:
Wind-power electricity generation project has had bigger development in China's power field, embedded type tower barrel base occupation rate is higher, owing to design standard is relatively low, part engineering construction quality is poor, between foundation ring and concrete, gap is strengthened to cause part Wind turbines basis to occur, tower vibration exceeding the standard, the problems such as basis is cracking, serious threat aerogenerator unit safe stable operation.Owing to wind power generating set is the most all arranged on the height of more than 70 meters, tower is under the effect of intrinsic self-vibration and blast, foundation ring rigidly connected with tower with form the state being in vibration at the concrete crack in gap all the time, the size of amplitude, direction of vibration and horizontal direction active force along with blast change constantly change.
The method that between existing solution foundation ring and concrete, gap is strengthened is to inject epoxide-resin glue and high-strength grout in gap, the subject matter existed is that epoxide-resin glue and high-strength grout need certain hardening time, due to foundation ring with form the state being in vibration at the concrete crack in gap all the time, the epoxide-resin glue or the high-strength grout condition of cure that are in the state of being stirred continuously are poor, before reaching solidification intensity, foundation ring has formed gap between epoxy resin or high-strength grout, active strength can not be formed, after bigger vibration, resin or high-strength grout after solidification are gradually grated, gap is increasing.
Application number 201510183824.1 patent of invention describes a kind of foundation of wind-driven generator unit hardened system and reinforcement means, by the hexagon girder steel being arranged in outside foundation ring is applied pretension, apply to answer pressure in advance to foundation ring periphery concrete, solve the tired problem producing cracking in basis, and provide method.The problem of this patent is mainly: 1, before steel framed concrete beam (6) does not has Shi Hanzhang, will complete to irrigate high-strength grout to lesion cavities (12), epoxide-resin glue is injected to gap (11), owing to steel framed concrete beam (6) process of Shi Hanzhang can need time of more than 20 day, due to foundation ring vibration at gap, epoxide-resin glue and the high-strength grout of injection are hardly formed active strength；2, regular hexagon girder steel (5) is symmetrically distributed in outside foundation ring, the central point of every girder steel all with foundation ring wall contacts, before steel framed concrete beam (6) does not has Shi Hanzhang, steel framed concrete beam (6) after regular hexagon girder steel (5) and casting concrete is vibrated together along with foundation ring, steel framed concrete beam (6) is in curing period the most vibrated impact, cement and reinforcing bar and girder steel shelling, do not reach the requirement of Intensity Design；3, steel framed concrete beam (6) is vibrated together along with foundation ring, steel framed concrete beam (6), and basis ring wall defines gap with between steel framed concrete beam (6), loses and controls the effect that foundation ring horizontal direction is vibrated；4, only by 4 of 6 girder steel two ends, amount to that basal perimeter concrete produces by 24 anchor poles pre-answers pressure, and the frictional force that this prestressing force and steel framed concrete beam (6) and stub surface produce can be more than tower and act on properly functioning load or the extreme load of stub (9) upper surface horizontal direction；5, after armored concrete is ineffective, 6 point control foundation ring horizontal direction vibrations in regular hexagon girder steel (5), stress concentration, foundation ring (8), regular hexagon girder steel (5) and prestressed anchor molectron (7) produce fatigue；6, anchor pole (13) is arranged in stub (9) outside, armored concrete is not had between girder steel (5) and switching beam (14), the prestressing force produced after anchor pole (13) stretch-draw concentrates on girder steel (5) and stub (9) junction, and stress is concentrated, and hidden danger is bigger.
So, research and development one ensure that blower fan stable operation, and the foundation of wind-driven generator unit hardened system and the reinforcement means that reduce enterprise business risk are the most necessary.
Summary of the invention:
In place of the present invention fills up and improves above-mentioned the deficiencies in the prior art, provide a kind of reasonable in design, safe and reliable, effect is obvious, cost is controlled, economic and practical, a kind of foundation of wind-driven generator unit hardened system and the reinforcement means of enterprise business risk can be reduced, can promote on a large scale in wind-powered electricity generation field and use.
nullThe technical solution used in the present invention is: a kind of foundation of wind-driven generator unit hardened system，Including former blower fan reinforced concrete foundation and hardened system，Former blower fan reinforced concrete foundation includes sole plate、Foundation ring and stub，In foundation ring embedment stub，Foundation ring top is connected with tower，Hardened system includes newly-built reinforced concrete foundation、Annular girder steel、Upper trapezoid regulation cushion block、Lower trapezoid regulation cushion block、Arching pressure plate and reinforcing bar，Newly-built reinforced concrete foundation is connected with former blower fan reinforced concrete foundation by implanting reinforcing bar，Annular steel girder erection is outside foundation ring，Annular girder steel is connected in one with former blower fan armored concrete by newly-built reinforced concrete foundation，Arching pressure plate is uniformly distributed on the outer surface of foundation ring，It is provided with fill orifice between adjacent arching pressure plate，Upper trapezoid regulation cushion block and lower trapezoid regulation cushion block are between arching pressure plate and annular girder steel，Upper trapezoid regulation cushion block and lower trapezoid regulation cushion block be arranged over locking bolt，Locking bolt is uniformly installed on the circumference of annular girder steel by screwed hole.
Described annular girder steel, upper trapezoid regulation cushion block and lower trapezoid regulation cushion block, the radian of arching pressure plate and the mutual contact surface of foundation ring outer wall is consistent with the gradient, upper trapezoid regulation cushion block, lower trapezoid regulation cushion block and the bevel angle of annular girder steel, after ensureing upper trapezoid regulation cushion block and lower trapezoid regulation cushion block and annular girder steel pressurized, its frictional force produced regulates the active force of cushion block large end face more than perpendicular acting at upper trapezoid regulation cushion block and lower trapezoid, and by locking bolt locked upper trapezoid regulation cushion block and lower trapezoid regulation cushion block, to guarantee that upper trapezoid regulation cushion block and lower trapezoid regulation cushion block are not extruded under extreme loading condition.
Described upper trapezoid regulation cushion block is provided with equally distributed reserved fabrication hole, and the quantity of reserved fabrication hole is no less than 2.
Described annular girder steel is formed by no less than 2 sections of circular arc girder steels, and every section of circular arc girder steel is connected by flanged plate and bolt assembly, and every section of circular arc steel beam surface is provided with 1 double-shaft tilt angle sensor datum clamp face and 3 leveling observation points.
Described annular girder steel is provided with 2 row's screw holes near the top and bottom of the concave profile of foundation ring, by using interim adjustment and fixing device, when installing annular girder steel, adjust and foundation ring distance stationary annular girder steel, before arching pressure plate and upper trapezoid regulation cushion block and lower trapezoid regulation cushion block are installed, fixed screw and temporary fastening device are removed, in outside annular girder steel, lower end area is that 120 degree of angles arrange 3 screw holes, height and the gradient of annular girder steel is adjusted for trace, and at erection stage stationary annular girder steel.
Described upper trapezoid regulation cushion block and the hardness of lower trapezoid spacer stock material are less than annular girder steel, arching pressure plate and the hardness of foundation ring material, to ensure owing to the change of temperature causes foundation ring, arching pressure plate, the expansion of annular girder steel material to form concentrated stress on foundation ring, cause the fatigue of metal.
A kind of reinforcement means of foundation of wind-driven generator unit hardened system, reinforcement means comprises the following steps:
1), the practical situation designed according to each wind electric field blower foundation, design requirement according to newly-built reinforced concrete foundation, layout and the trend of reinforcing bar in former blower fan reinforced concrete foundation is accurately detected by reinforcing bar survey meter, in search coverage, do not arrange that reinforcing bar is implanted in the local boring of reinforcing bar, it is being not reaching to the position sensing of projected depth to after influential raw steel muscle, stop boring and implant reinforcing bar, nearby continuing detect the position not having reinforcing bar to affect and implant reinforcing bar.After implanting quantity and the arrangement satisfied design requirement of reinforcing bar, assembling reinforcement, annular girder steel is installed, annular steel girder erection is outside foundation ring, and annular girder steel is integrally forming with former blower fan reinforced concrete foundation by newly-built reinforced concrete foundation, and annular girder steel and foundation ring arranged concentric, the upper plane of annular girder steel is not less than the upper plane of foundation ring, the lower plane of annular girder steel is not higher than the upper plane of stub, formwork casting concrete, enters the concrete curing stage.Newly-built reinforced concrete foundation is connected with former blower fan reinforced concrete foundation by implanting reinforcing bar, and the reinforcing bar of implantation and former reinforced concrete foundation are fixed by being poured into the epoxide-resin glue placed in reinforced hole.Newly-built reinforced concrete foundation uses expansive concrete, it is ensured that newly-built concrete does not shrink and cracks, and does not reduce concrete strength.
2) after, newly-built reinforced concrete foundation reaches design strength; by locking screw hole; use specific purpose tool that upper trapezoid regulates cushion block, lower trapezoid regulation cushion block hangs to entopic highest point; arching pressure plate is installed; after whole arching pressure plates install; wind power generating set is shut down; less at wind speed; under conditions of blast is relatively low; the strength relationship of foundation ring outer wall and arching pressure plate is adjusted by upper trapezoid regulation cushion block and lower trapezoid regulation cushion block; ensure that the perpendicularity of tower is unaffected, it is to avoid the phenomenon that stress is concentrated occurs.Arching pressure plate is uniformly installed on the outer surface of foundation ring, upper trapezoid regulation cushion block and lower trapezoid regulation cushion block are uniformly installed between annular girder steel and arching pressure plate, and the two is interspersed, the reserved fabrication hole utilizing upper trapezoid regulation cushion block and the screwed hole coordinated with locking bolt use drill rod or regulation instrument to adjust lower trapezoid regulation cushion block, and by 2 locking bolts, it is locked；Recycle the other screwed hole coordinated with locking bolt and adjust upper trapezoid regulation cushion block, and by 2 locking bolts, it is locked.
3), arching pressure plate is regulated with the gap on foundation ring surface and pressure by upper trapezoid regulation cushion block and lower trapezoid regulation cushion block and is kept fixing, after blower fan bears the load at full capacity of different wind direction, check and adjust upper trapezoid regulation cushion block and lower trapezoid regulation cushion block so that foundation ring and whole arching pressure plates keep stable rigidity；When installing arching pressure plate, it is reserved with fill orifice between each arching pressure plate, when after the rigid structure that foundation ring and whole arching pressure plates keep stable, infusion epoxy resin glue in the stub gap with foundation ring, or in foundation ring flange in the bottom periphery concrete damage region, inject high-strength grout.
4), be that an angle of 90 degrees is evenly arranged 4 high accuracy displacement sensors and load sensor at newly-built reinforced concrete foundation upper surface along tower wall surrounding, dynamic acquisition tower is in the horizontal direction displacement of newly-built reinforced concrete foundation surface and the data of impulsive force；In junction, base, newly-built reinforced concrete foundation outer, installing 4 high accuracy displacement sensors in an angle of 90 degrees horizontal direction, be used for monitoring, assessing newly-built reinforced concrete foundation horizontal direction displacement risk, two of which is backup；Between former blower fan reinforced concrete foundation and newly-built reinforced concrete foundation, it is perpendicular to horizontal plane in 120 degree arranges 3 high accuracy displacement sensors, for monitoring, assess whether newly-built reinforced concrete foundation exists relative displacement with former blower fan reinforced concrete foundation, the dynamic data gathered is real-time transmitted to control centre, provides foundation for production run department.
5), above arching pressure plate, upper trapezoid regulation cushion block and annular girder steel, according to the technical scheme of patent 2015201778301, water-tight device is installed.
6), newly-built reinforced concrete foundation load that former blower fan reinforced concrete foundation is increased, if being computed exceeding the bearing capacity of ground, then balance the load that ground newly increases by reducing the earthwork on former blower fan reinforced concrete foundation.
Beneficial effects of the present invention: reasonable in design, safe and reliable, effect is obvious, and cost is controlled, economic and practical, is a kind of foundation of wind-driven generator unit hardened system and the reinforcement means that can reduce enterprise business risk, can promote on a large scale in wind-powered electricity generation field and use.Its major advantage is as follows:
1), described upper trapezoid regulation cushion block and the design of lower trapezoid regulation cushion block, the rigid structure of foundation ring and newly-built reinforced concrete foundation can be adjusted flexibly, it is good that upper trapezoid regulation cushion block and lower trapezoid regulation cushion block have plasticity, intensity is high, can be layered and arrange between annular girder steel and arching pressure plate, increase effective contact area, fully ensure that foundation ring, arching pressure plate, upper trapezoid regulation cushion block and lower trapezoid regulation cushion block, annular girder steel and newly-built reinforced concrete foundation are rigid structure, after foundation ring and newly-built reinforced concrete foundation form stable rigid structure, control foundation ring not vibrate.As a example by domestic certain single-machine capacity 2000KW unit, the normal Fxy load under dlc1.1ba working condition acting on section of foundation flange is KN more than 450, at dlc1.5ca_c_1 working condition, in the case of security system is 1.0, extreme load is KN more than 610, in the horizontal direction by the means such as bolt, hydraulic pressure to foundation ring Shi Hanzhang, it is impossible to from the basic vibration solving foundation ring horizontal direction.
2) under the conditions of different wind regime, upper trapezoid regulation cushion block and lower trapezoid regulation cushion block, are adjusted, it is ensured that the perpendicularity of tower and the stress distribution of foundation ring.
null3)、After newly-built reinforced concrete foundation reaches design strength，Arching pressure plate is installed、Upper trapezoid regulation cushion block and lower trapezoid regulation cushion block，By adjusting upper trapezoid regulation cushion block and lower trapezoid regulation cushion block，Control the vibration of foundation ring not occurred level direction，After the rigid structure that foundation ring and all of arching pressure plate keep stable，Stop fan operation，Reduce horizontal direction load，Epoxide-resin glue is injected to stub with foundation ring gap by fill orifice reserved between arching pressure plate，Or high-strength grout is injected to foundation ring flange in the bottom periphery concrete damage region，Can ensure that epoxide-resin glue and high-strength grout solidify under normal operation and reach design strength，Between foundation ring and former blower fan reinforced concrete foundation stub, perfusion reaches epoxide-resin glue and the high-strength grout of design strength，Recover the effect to foundation ring of the former blower fan reinforced concrete foundation，After foundation ring and newly-built reinforced concrete foundation form stable rigid structure，The safe and stable operation of Wind turbines can be ensured.
4), expansive concrete, bar planting etc. be conventional construction technique, technology maturation, process.
5), arching pressure plate, upper trapezoid regulate cushion block and the parts such as lower trapezoid regulation cushion block and annular girder steel can be completed by casting and existing machinery manufacturing process, and technology maturation, material is guaranteed.
6), newly-built reinforced concrete foundation is constructed and maintenance processes need not Wind turbines and shuts down, and reduces the economic loss of operator.
7), low due to former blower fan reinforced concrete foundation design standard, reinforce pre-structure to be destroyed, gap between newly-built reinforced concrete foundation and annular girder steel is there is and strengthens in newly-built hardened system at several Nian Houhui of operation, the risk that annular girder steel damages, due to upper trapezoid regulation cushion block and the special role of lower trapezoid regulation cushion block, can irrigate high-strength grout in gap or change annular girder steel, cost is relatively low.
8), by arranging displacement transducer and load sensor at newly-built reinforced concrete foundation with basis interannular, cloth displacement sensor between new underpinning and former blower fan reinforced concrete foundation, monitoring displacement and pressure changing in real time, can the new underpinning of comprehensive diagnostic and the ruuning situation of associated components, for upper trapezoid regulation cushion block and lower trapezoid regulation cushion block design Adjusted Option provide foundation.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the schematic top plan view of the present invention.
Fig. 3 is the structural representation of Central Plains of the present invention blower fan reinforced concrete foundation.
Detailed description of the invention:
nullWith reference to each figure，A kind of foundation of wind-driven generator unit hardened system，Including former blower fan reinforced concrete foundation 16 and hardened system，Former blower fan reinforced concrete foundation 16 includes sole plate 9、Foundation ring 5 and stub 7，Foundation ring 5 is imbedded in stub 7，Foundation ring 5 top is connected with tower 4，Hardened system includes newly-built reinforced concrete foundation 12、Annular girder steel 1、Upper trapezoid regulation cushion block 2、Lower trapezoid regulation cushion block 13、Arching pressure plate 3 and reinforcing bar 11，Newly-built reinforced concrete foundation 12 is connected with former blower fan reinforced concrete foundation 16 by implanting reinforcing bar 11，Annular girder steel 1 is installed on outside foundation ring 5，Annular girder steel 1 is connected in one with former blower fan armored concrete 16 by newly-built reinforced concrete foundation 12，Arching pressure plate 3 is uniformly distributed on the outer surface of foundation ring 5，It is provided with fill orifice 15 between adjacent arching pressure plate 3，Upper trapezoid regulation cushion block 2 and lower trapezoid regulation cushion block 13 are between arching pressure plate 3 and annular girder steel 1，Upper trapezoid regulation cushion block 2 and lower trapezoid regulation cushion block 13 be arranged over locking bolt 14，Locking bolt 14 is uniformly installed on the circumference of annular girder steel 1 by screwed hole.
Described annular girder steel 1, upper trapezoid regulation cushion block 2 and lower trapezoid regulation cushion block 13, the radian of arching pressure plate 3 and the mutual contact surface of foundation ring 5 outer wall is consistent with the gradient, upper trapezoid regulation cushion block 2, lower trapezoid regulation cushion block 13 and the trapezoidal inclined plane angle of annular girder steel 1, after upper trapezoid to be ensured regulation cushion block 2 and lower trapezoid regulate cushion block 13 and annular girder steel 1 pressurized, its frictional force produced regulates the active force of cushion block 13 large end face more than perpendicular acting at upper trapezoid regulation cushion block 2 and lower trapezoid, and by locking bolt 14 locked upper trapezoid regulation cushion block 2 and lower trapezoid regulation cushion block 13, to guarantee that upper trapezoid regulation cushion block 2 and lower trapezoid regulation cushion block 13 are not extruded under extreme loading condition.
Described upper trapezoid regulation cushion block 2 is provided with equally distributed reserved fabrication hole, and the quantity of reserved fabrication hole is no less than 2.
Described annular girder steel 1 is formed by no less than 2 sections of circular arc girder steels, and each section of circular arc girder steel is connected by flanged plate and bolt assembly 17, and every section of circular arc steel beam surface is provided with 1 double-shaft tilt angle sensor datum clamp face and 3 leveling observation points.
Described annular girder steel 1 is provided with 2 row's screw holes near the top and bottom of the concave profile of foundation ring 5, by using interim adjustment and fixing device, when installing annular girder steel 1, adjust with foundation ring 5 apart from also stationary annular girder steel 1, before arching pressure plate 3 and upper trapezoid regulation cushion block 2 and lower trapezoid regulation cushion block 13 are installed, fixed screw and temporary fastening device are removed, middle lower end area in annular girder steel 1 outer arcuate face is that 120 degree of angles arrange 3 screw holes, height and the gradient of annular girder steel is adjusted for trace, and at erection stage stationary annular girder steel 1.
The hardness of described upper trapezoid regulation cushion block 2 and lower trapezoid regulation cushion block 13 material is less than annular girder steel 1, arching pressure plate 3 and the hardness of foundation ring 5 material, to ensure owing to the change of temperature causes foundation ring 5, arching pressure plate 3, the expansion of annular girder steel 1 material to form concentrated stress on foundation ring 5, cause the fatigue of metal.
A kind of reinforcement means of foundation of wind-driven generator unit hardened system, reinforcement means comprises the following steps:
1), the practical situation designed according to each wind electric field blower foundation, design requirement according to newly-built reinforced concrete foundation 12, layout and the trend of former blower fan reinforced concrete foundation 16 Central Plains reinforcing bar is accurately detected by reinforcing bar survey meter, in search coverage, do not arrange that reinforcing bar 11 is implanted in the local boring of reinforcing bar, it is being not reaching to the position sensing of projected depth to after influential raw steel muscle, stop boring and implant reinforcing bar 11, nearby continuing detect the position not having reinforcing bar to affect and implant reinforcing bar 11.After implanting quantity and the arrangement satisfied design requirement of reinforcing bar 11, design assembling reinforcement according to newly-built reinforced concrete foundation construction drawing, annular girder steel 1 is installed, annular girder steel 1 is installed on outside foundation ring 5, annular girder steel 1 is connected in one with former blower fan concrete foundation 16 by newly-built reinforced concrete foundation 12, and annular girder steel 1 and foundation ring 5 arranged concentric, the upper plane of annular girder steel 1 is not less than the upper plane of foundation ring 5, the lower plane of annular girder steel 1 is not higher than the upper plane of stub 7, formwork casting concrete, enters the concrete curing stage.Newly-built reinforced concrete foundation 12 is connected with former blower fan reinforced concrete foundation 16 by implanting reinforcing bar 11, and the reinforcing bar 11 of implantation and former reinforced concrete foundation 16 are fixed by being poured into the epoxide-resin glue 10 placed in reinforcing bar 11 hole.Newly-built reinforced concrete foundation 12 uses expansive concrete, it is ensured that newly-built concrete does not shrink and cracks, and does not reduce concrete strength.
2), after newly-built reinforced concrete foundation 12 reaches design strength, hole by locking screw 14, by specific purpose tool, upper trapezoid regulated cushion block 2, lower trapezoid regulation cushion block 13 hangs to entopic highest point, arching pressure plate 3 is installed, after whole arching pressure plates 3 install, wind power generating set is shut down, less at wind speed, under conditions of blast is relatively low, the strength relationship of foundation ring 5 outer wall and arching pressure plate 3 is adjusted by upper trapezoid regulation cushion block 2 and lower trapezoid regulation cushion block 13, ensure that the perpendicularity of tower 4 is unaffected, the phenomenon avoiding stress to concentrate occurs.Arching pressure plate 3 is uniformly installed on the outer surface of foundation ring 5, upper trapezoid regulation cushion block 2 and lower trapezoid regulation cushion block 13 are uniformly installed between annular girder steel 1 and arching pressure plate 3, and the two is interspersed, the reserved fabrication hole utilizing upper trapezoid regulation cushion block 2 and the screwed hole coordinated with locking bolt 14 use drill rod or regulation instrument to adjust lower trapezoid regulation cushion block 13, and by 2 locking bolts 14, it is locked；Recycle the other screwed hole coordinated with locking bolt 14 and adjust upper trapezoid regulation cushion block 2, and by 2 locking bolts 14, it is locked.
3), arching pressure plate 3 is regulated with gap and the pressure on foundation ring 5 surface by upper trapezoid regulation cushion block 2 and lower trapezoid regulation cushion block 13 and is kept fixing, after blower fan bears the load at full capacity of different wind direction, check and adjust upper trapezoid regulation cushion block 2 and lower trapezoid regulation cushion block 13 so that foundation ring 5 and whole arching pressure plates 3 keep stable rigidity；When installing arching pressure plate 3, it is reserved with fill orifice 15 between each arching pressure plate 3, when after the rigid structure that foundation ring 5 and whole arching pressure plates 3 keep stable, infusion epoxy resin glue in the stub 7 gap 6 with foundation ring 5, or in foundation ring 5 flange in the bottom periphery concrete damage region 8, inject high-strength grout.
4), be that an angle of 90 degrees is evenly arranged 4 high accuracy displacement sensors and load sensor at newly-built reinforced concrete foundation 12 upper surface along tower wall surrounding, dynamic acquisition tower 4 is in newly-built reinforced concrete foundation 12 surface horizontal direction displacement and the data of impulsive force；In junction, base, newly-built reinforced concrete foundation 12 outer, installing 4 high accuracy displacement sensors in an angle of 90 degrees horizontal direction, be used for monitoring, assessing newly-built reinforced concrete foundation 12 horizontal direction displacement risk, two of which is backup；Between former blower fan reinforced concrete foundation 16 and newly-built reinforced concrete foundation 12, it is perpendicular to horizontal plane in 120 degree arranges 3 high accuracy displacement sensors, for monitoring, assess whether newly-built reinforced concrete foundation 12 exists relative displacement with former blower fan reinforced concrete foundation 16, the dynamic data gathered is real-time transmitted to control centre, provides foundation for production run department.
5), above arching pressure plate 3, upper trapezoid regulation cushion block 2 and annular girder steel 1, according to the technical scheme of patent 2015201778301, water-tight device is installed.
6), newly-built reinforced concrete foundation 12 load that former blower fan reinforced concrete foundation 16 is increased, if being computed exceeding the bearing capacity of ground, then balance the load that ground newly increases by reducing the earthwork on former blower fan reinforced concrete foundation 16.
The present invention is reasonable in design, safe and reliable, and effect is obvious, and cost is controlled, economic and practical, is a kind of foundation of wind-driven generator unit hardened system and the reinforcement means that can reduce enterprise business risk, can promote on a large scale in wind-powered electricity generation field and use.
Claims (6)
- null1. a foundation of wind-driven generator unit hardened system，Including former blower fan reinforced concrete foundation (16) and hardened system，Former blower fan reinforced concrete foundation (16) includes sole plate (9)、Foundation ring (5) and stub (7)，In foundation ring (5) embedment stub (7)，Foundation ring (5) top is connected with tower (4)，It is characterized in that: hardened system includes newly-built reinforced concrete foundation (12)、Annular girder steel (1)、Upper trapezoid regulation cushion block (2)、Lower trapezoid regulation cushion block (13)、Arching pressure plate (3) and reinforcing bar (11)，Newly-built reinforced concrete foundation (12) is connected with former blower fan reinforced concrete foundation (16) by implanting reinforcing bar (11)，Annular girder steel (1) is installed on foundation ring (5) outside，Annular girder steel (1) is connected in one with former blower fan reinforced concrete foundation (16) by newly-built reinforced concrete foundation (12)，Arching pressure plate (3) is uniformly distributed on the outer surface of foundation ring (5)，It is provided with fill orifice (15) between adjacent arching pressure plate (3)，Upper trapezoid regulation cushion block (2) and lower trapezoid regulation cushion block (13) are positioned between arching pressure plate (3) and annular girder steel (1)，Upper trapezoid regulation cushion block (2) and lower trapezoid regulation cushion block (13) are arranged over locking bolt (14)，Locking bolt (14) is uniformly installed on the circumference of annular girder steel (1) by screwed hole.
- A kind of foundation of wind-driven generator unit hardened system the most according to claim 1, it is characterised in that: described annular girder steel (1), upper trapezoid regulation cushion block (2) are consistent with the gradient with the radian of lower trapezoid regulation cushion block (13), arching pressure plate (3) and the mutual contact surface of foundation ring (5) outer wall.
- A kind of foundation of wind-driven generator unit hardened system the most according to claim 1, it is characterised in that: described upper trapezoid regulation cushion block (2) is provided with equally distributed reserved fabrication hole, and the quantity of reserved fabrication hole is no less than 2.
- A kind of foundation of wind-driven generator unit hardened system the most according to claim 1, it is characterized in that: described annular girder steel (1) is formed by no less than 2 sections of circular arc girder steels, being connected by flanged plate and bolt assembly (17) between every section of circular arc girder steel, every section of circular arc steel beam surface is provided with 1 double-shaft tilt angle sensor datum clamp face and 3 leveling observation points.
- A kind of foundation of wind-driven generator unit hardened system the most according to claim 1, it is characterised in that: the hardness of described upper trapezoid regulation cushion block (2) and lower trapezoid regulation cushion block (13) material is less than annular girder steel (1), arching pressure plate (3) and the hardness of foundation ring (5) material.
- 6. the reinforcement means of a foundation of wind-driven generator unit hardened system, it is characterised in that: reinforcement means comprises the following steps:1), newly-built reinforced concrete foundation (12) is connected with former blower fan reinforced concrete foundation (16) by implanting reinforcing bar (11), the reinforcing bar (11) of implantation and former blower fan reinforced concrete foundation (16) are fixing by the epoxide-resin glue (10) in the hole being poured into placement reinforcing bar (11)；2), annular girder steel (1) is installed on foundation ring (5) outside, annular girder steel (1) is connected in one with former blower fan reinforced concrete foundation (16) by newly-built reinforced concrete foundation (12), and annular girder steel (1) with foundation ring (5) arranged concentric, the upper plane of annular girder steel (1) is not less than the upper plane of foundation ring (5), and the lower plane of annular girder steel (1) is not higher than the upper plane of stub (7)；3), arching pressure plate (3) is uniformly installed on the outer surface of foundation ring (5), upper trapezoid regulation cushion block (2) and lower trapezoid regulation cushion block (13) are uniformly installed between annular girder steel (1) and arching pressure plate (3), and the two is interspersed, the reserved fabrication hole utilizing upper trapezoid regulation cushion block (2) and the screwed hole coordinated with locking bolt (14) use regulation instrument to adjust lower trapezoid regulation cushion block (13), and by 2 locking bolts (14), it is locked；Recycle the other screwed hole coordinated with locking bolt (14) and adjust upper trapezoid regulation cushion block (2), and by 2 locking bolts (14), it is locked；4), arching pressure plate (3) is regulated with gap and the pressure on foundation ring (5) surface by upper trapezoid regulation cushion block (2) and lower trapezoid regulation cushion block (13) and is kept fixing, after blower fan bears the load at full capacity of different wind direction, check and adjust upper trapezoid regulation cushion block (2) and lower trapezoid regulation cushion block (13) so that foundation ring (5) and whole arching pressure plates (3) keep stable rigidity；When installing arching pressure plate (3), it is reserved with fill orifice (15) between each arching pressure plate (3), when after the rigidity that foundation ring (5) and whole arching pressure plates (3) keep stable, infusion epoxy resin glue in the stub (7) gap (6) with foundation ring (5), or in foundation ring (5) flange in the bottom periphery concrete damage region (8), inject high-strength grout.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018086022A1 (en) | 2016-11-10 | 2018-05-17 | General Electric Company | Methods and apparatus for refurbishing wind turbine foundations |
| CN107100192B (en) * | 2017-06-19 | 2022-06-07 | 湖南科技大学 | Local reinforcing device and method for foundation ring of wind generating set |
| CN108411931A (en) * | 2018-04-02 | 2018-08-17 | 中国电建集团中南勘测设计研究院有限公司 | A kind of reinforcement means of blower foundation |
| AU2019355117A1 (en) | 2018-10-04 | 2021-06-03 | Tetra Tech, Inc. | Wind turbine foundation and method of constructing a wind turbine foundation |
| CN109826223A (en) * | 2019-02-15 | 2019-05-31 | 吉林建筑大学城建学院 | Concrete weak area stiffener at blower foundation ring lower flange |
| CN111379669A (en) * | 2020-03-24 | 2020-07-07 | 国电联合动力技术有限公司 | Reinforcing device and reinforcing method for concrete table column of fan foundation |
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