CN110397335A - A kind of self-supporting tower tower seat method for correcting error - Google Patents
A kind of self-supporting tower tower seat method for correcting error Download PDFInfo
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- CN110397335A CN110397335A CN201910739979.7A CN201910739979A CN110397335A CN 110397335 A CN110397335 A CN 110397335A CN 201910739979 A CN201910739979 A CN 201910739979A CN 110397335 A CN110397335 A CN 110397335A
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- 238000000034 method Methods 0.000 title claims abstract description 75
- 210000002683 foot Anatomy 0.000 claims abstract description 184
- 238000012937 correction Methods 0.000 claims abstract description 46
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 45
- 239000010959 steel Substances 0.000 claims abstract description 45
- 239000004567 concrete Substances 0.000 claims abstract description 18
- 230000001681 protective effect Effects 0.000 claims abstract description 18
- 238000005259 measurement Methods 0.000 claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 238000005266 casting Methods 0.000 claims abstract description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000004062 sedimentation Methods 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- 239000003351 stiffener Substances 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 238000011065 in-situ storage Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000037396 body weight Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009424 underpinning Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D35/00—Straightening, lifting, or lowering of foundation structures or of constructions erected on foundations
- E02D35/005—Lowering or lifting of foundation structures
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/34—Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
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- General Engineering & Computer Science (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
A kind of self-supporting tower tower seat method for correcting error, it is related to high voltage power transmission tower deviation correcting technology field, suitable for the steel tower with 4 column foots, it is connected on basic principal post by foundation bolt, described method includes following steps: S1: in-site measurement, calculates horizontal offset Xi and Vertical Settlement amount Yi of 4 column foots compared to normal place；S2: when correction adjustment, the original concrete protective cap of column foot is removed；S3: steel tower is carried out by vertical applied force support using hoisting mechanism, selects suitable method of adjustment further according to Xi and Yi；S4: as Xi=0 and Yi ≠ 0, the position of 4 column foots is adjusted to by normal place using one-dimensional rectifying method；As Xi ≠ 0, the position of 4 column foots is adjusted to by normal place using two-dimentional rectifying method；S5: after being adjusted to normal place, casting concrete protective cap again.Method for correcting error of the invention do not have to remove completely it is old build, without the newly-built correction that can be completed to self-supporting tower tower seat, it is ensured that the safety of electric power pylon and pedestrian.
Description
Technical field
The present invention relates to high voltage power transmission tower deviation correcting technology fields, rectify a deviation more particularly, to a kind of self-supporting tower tower seat
Method.
Background technique
Settlement of foundation refer to foundation soil additional stress effect under caused by foundation surface sink.Excessive sedimentation,
Especially differential settlement can make the above building of ground or electric power pylon run-off the straight, probably already exist in ground by the soil body
Weight stress caused by self gravity.Electric power pylon load on ground passes to ground by the bottom surface on basis or embankment, makes
The natural original stress state of soil layer changes, and under the effect of additional three-dimensional stress component, vertical, side is produced in ground
To with it is shear-deformable, lead to the vertical and lateral displacement of each point.The vertical deformation of foundation surface is known as settlement of foundation, or basis sinks
Drop.Due to object different loading on ground and ground are uneven etc., the sedimentation of ground each section is always non-uniform, so that
Corresponding earth's surface generates additional stress and deformation among superstructure or pavement structure.Uneven settlement of foundation has been more than certain
Limit, will lead to the building of ground or more or the cracking of facility, inclination even damage, such as crack, crane wheel occurs in brick wall
There is clamp rail in son or sliding rail, towering build object inclination, rotary shaft of machine deflection and the fracture of building connecting pipe and bridge deviate
Pier, beam face or pavement cracking etc..Electric power pylon ground causes electric power pylon to tilt once sedimentation occurs, and iron of transmitting electricity gently then occurs
Tower tilts transmission line of electricity transmission of electricity and interrupts, the heavy then security of the lives and property of crisis pedestrian.
It, in some cases, may be due to the original of various aspects during on conventional electrical power lines road, design is with operation and maintenance
The situation of foundation uneven settlement can occur in operational process for built shaft tower because caused by, and so as to cause shaft tower inclination, insulator is inclined
Oblique pull is bad, if handling not in time, causes very big hidden danger to transmission line safety operation, common traditional scheme is that addressing is new again
Build tower position or reinforce built basis, and the shaft tower of charging operation and basis or do not have tear open it is old build new condition or
Again it creates or the project cost of underpinning is higher, will cause serious secondary waste, it will be in specified constraint with conventional method
Under the conditions of restricted correction is carried out to shaft tower there are great difficulty, therefore, to can be carried out the technical side easily implemented to rectify a deviation in situ
The demand of case to transmission line of electricity take part in building and O&M department is very urgent.
Summary of the invention
The present invention is directed to overcome at least one defect of the above-mentioned prior art, a kind of self-supporting tower tower seat correction side is provided
Method, without remove completely it is old build, correction to self-supporting tower tower seat can be completed without creating again, it is ensured that electric power pylon
And the safety of pedestrian.
The technical solution adopted by the present invention is that a kind of self-supporting tower tower seat method for correcting error, suitable for having 4 column foots
Steel tower, the column foot number is (i=1,2,3,4) i, is connected on basic principal post by foundation bolt, on the basis principal post
Be additionally provided with concrete protective cap, foundation bolt is wrapped in, for protecting foundation bolt, described method includes following steps:
S1: in-site measurement calculates horizontal offset Xi and Vertical Settlement amount Yi of 4 column foots compared to normal place；
S2: when correction adjustment, the original concrete protective cap of column foot is removed；
S3: steel tower is carried out by vertical applied force support using hoisting mechanism, selects suitable method of adjustment further according to Xi and Yi；
S4: as Xi=0 and Yi ≠ 0, the position of 4 column foots is adjusted to by normal place using one-dimensional rectifying method；
As Xi ≠ 0, the position of 4 column foots is adjusted to by normal place using two-dimentional rectifying method；
S5: after being adjusted to normal place, casting concrete protective cap again.
Technical solution of the present invention is directed in situ correction design of the existing steel tower under environment limited situation, such as steel tower
Positioned at old place, the route that should not have a power failure for a long time, the place that tower position should not be created should not be torn open, use the technical program can be with
Correction in situ is carried out to the conventional self-supporting tower of run-off the straight situation, that is, multiple column foots form the steel tower of rectangle.Work as work
Make personnel after carrying out daily exploration, receives some self-supporting tower tower seat and shift or settle, at this time, it may be necessary to first measure 4
A column foot is compared to the horizontal offset Xi and Vertical Settlement amount Yi of normal place, and then, staff is real according to each column foot
Border needs the correction amount adjusted, and the structural member within the scope of pre-selection certain size is conveyed to scene.More accurately to install
And the offset of column foot is corrected, need the size precision to structural member to design, in general, column foot is fixed on by foundation bolt
On basic principal post, and one end of foundation bolt passes through the screw hole on column foot, is tightened using gasket and nut, the other end passes through cement
It is cast in basic principal post, forms concrete protective cap in basic capital, it is ensured that foundation bolt is during O&M not by outside
Environmental attack.Therefore, it when carrying out correction adjustment, needs first to remove original concrete protective cap, makes to be coated on concrete guarantor
Part foundation bolt, gasket, nut in helmet and column foot expose, then, using the hoisting mechanisms such as loop wheel machine at the top of steel tower into
Row lifting is jacked up column foot using jack mechanism, be to keep the state of steel tower is always original nominal position, at this point,
Horizontal offset Xi and Vertical Settlement amount Yi of 4 column foots compared to normal place can be obtained with precise measurement, according to Xi, Yi
Specific variation, have the one-dimensional rectifying method of the selection being directed to or two-dimentional rectifying method, the position of 4 column foots be adjusted to normal place.
As Xi=0 and Yi ≠ 0, illustrate that column foot only has Vertical Settlement amount, there is no horizontal-shifts, at this time, it is only necessary to the tune being directed to
Whole vertical big settling amount, that is, carry out one-dimensional correction.As Xi ≠ 0, illustrate that horizontal-shift has occurred in column foot, needs to carry out water
Square to correction, and no matter whether Yi is equal to 0 at this time, after steel tower is sling, when installing deviation correcting device, inevitably goes out
The variation of existing Vertical Settlement amount, is also required to check and adjust vertical settling amount at this time, therefore, it is necessary to using two-dimentional rectifying method after
The correction of continuous horizontal and vertical two dimensions.Finally, after the completion of correction, that is, after column foot is adjusted to normal place, need
It re-starts and pours, form new concrete protective cap, it is ensured that foundation bolt is during subsequent O&M not by external environment
It corrodes.The invention for successively being excavated because of engineering construction caused by steel tower sedimentation, that steel tower caused by loads change is piled up on ground is heavy
The steel tower of the various bolt type connection types such as steel tower sedimentation caused by design fault when drop, geologic information inaccuracy settles situation
Can apply, expense can more traditional correction scheme save 90%, be even more in terms of implementation and convenience tradition tear open it is old build it is new
Scheme is incomparable, and scene correction can be completed in very short power off time, and cost of rectifying a deviation is very low, to operation portion
Door has extraordinary implementation convenience, so that it is guaranteed that the safety of electric power pylon and pedestrian.
Further, in step S2, the one-dimensional rectifying method are as follows: by the size of Xi, extend or shortening foundation bolt is long
L1 is spent, so that L1=-Xi, so that the position of column foot is adjusted to normal place.
Further, as Xi > 0, by the continued access extension bolt on foundation bolt, foundation bolt and extension bolt
Continued access mode is directly to weld or pass through sleeve connection, and the continued access length is Xi；
As Xi < 0, by tightening foundation bolt, shorten the spacing-Xi of column foot and basic principal post.
One-dimensional rectifying method in the technical program leads to mainly by carrying out continued access to the reserved part of appearing of original place foot bolt
Cross the levelling differential settlement of foundation bolt reserved value adjusted under each column foot.Using there are two ways to, the first is to pre-buried lower margin
Bolt is appeared using special high strength steel sleeve continued access, internal thread of sleeve and foundation bolt and extend bolt be engaged it is identical, really
Protect extend bolt breakout capacity can be transferred to foundation bolt by sleeve, because foundation bolt dew high part can bear bending resistance,
Shearing resistance, tension level determine that continued access length should not be too large, and need to match with actual conditions, therefore mainly for the tower of smaller sedimentation
Position and the lesser tangent tower application of basic role power, but this kind of scheme is most easily implemented, and is the smallest on status construction, the influence that has a power failure
Processing scheme.
Second is directly by foundation bolt and extension bolt by being welded to connect, and such mode is simple and convenient, but by
It will cause stress offset in the mode directly welded, therefore, it is suitable for the lesser steel towers of stress.
Further, in step S2, the two dimension rectifying method are as follows: by the conversion base for being provided with upper top surface and bottom surface
Seat, top surface, bottom surface in switch base are staggeredly arranged, and pass through the height difference H between upper top surface and bottom surface and the distance that is staggered
L2, so that L2=-Xi, H=-Yi, so that the position of column foot is adjusted to normal place.
Two-dimentional rectifying method in the technical program is suitable for more severe containing the differential settlement including horizontal drift condition
Correction situation, for offset be suitable for two column foot maximum height differences reach 150mm or more, this kind of situation inclined degree
It is larger, it generally synchronizes and opens variation with iron tower foundation root, the amplitude for needing to rectify a deviation is larger.This method is will to take down on foundation bolt
Nut, installs a special switch base, and the ingenious place of the switch base is being staggeredly arranged using upper and lower bottom panel, passes through
The mode that upper and lower foundation bolt center is staggered is adjusted into foundation settlement bring basis root and opens variation.Particularly, if only hair
Raw vertical sedimentation is not required to adjust basic root and open, then uses vertical support, i.e. the corresponding arrangement of bottom panel up and down, by adjusting upper
Height between the panel of bottom adjusts Vertical Settlement.It opens then for needing to adjust basic root as trapezoidal support, i.e., upper bottom surface
Plate is staggeredly arranged, and original column foot is bolted in top, and lower part connects foundation bolt by bottom surface.By in each tower
Switch base is set on foot, using the differential settlement between the height difference filling-in difference column foot between switch base, utilizes each conversion
Horizontal-shift of the offset between filling-in difference column foot between the upper top surface of pedestal and bottom surface is poor.Due to converting base
The vertical height and horizontal extent that seat can adjust are very big, are able to satisfy conventional all correction situations.The correction mode can adjust
Certain basic root is opened, and can adjust differential settlement, is a kind of correcting offset of base processing method that applicable elements are very loose, and engineering is applicable in
Property is very wide.
Further, the switch base further includes tower stud and the reinforcement that is arranged between upper top surface and bottom surface
Part, the foundation bolt is for fixing bottom surface and basic principal post, and tower stud is for fixing column foot and upper top surface, the reinforcement
Part is used to support top surface and bottom surface, and the power of steel tower is transmitted on basic principal post.
The reinforcer includes the angle steel and stiffener being arranged between upper top surface and bottom surface, by stiffener by upper top
Face and bottom surface are welded into an entirety, and angle steel is arranged at upper top surface and the periphery of bottom surface, cooperate with stiffener by steel tower
Active force foundation bolt is transferred to by column foot, switch base, structure is simple, cutting welding can be carried out at the scene, construct
Convenient and flexibility ratio is high.
Further, it when there are multiple column foots for needing to rectify a deviation, for the workload for reducing entire steel tower correction, needs to seek
That is, in step s 2 optimal solution during asking multiple column foots to rectify a deviation further includes according to different Xi and Yi, determination needs to rectify a deviation
Column foot minimum number.
Further, as the Xi=0 of 4 column foots and have and when the Yi of only 1 column foot ≠ 0, by measure obtain it is perpendicular
To settling amount Yi, column foot is adjusted to by normal place using one-dimensional rectifying method；
As the Yi of the Xi=0 of 4 column foots and at least two column foot ≠ 0, the median Y of at least two Yi is obtained, according to variable quantity
Each column foot is adjusted to normal place using one-dimensional rectifying method by Δ Yi=Yi-Y.
When horizontal offset is not present in 4 column foots, Vertical Settlement amount occurs for only one column foot, only needs to correspond at this time
Rectify a deviation to the column foot, this is optimal solution.When Vertical Settlement amount occurs there are two or more column foots, in order to
It avoids adjusting the column foot generation Vertical Settlement amount for causing other not need correction, needs to reduce the amplitude of each column foot adjustment, this
When, it is further adjusted by median Y, optimizes correction amount.
Further, when having and when the Yi=0 of Xi ≠ 0 of only 1 column foot and 4 column foots, by measuring obtained water
Column foot is adjusted to normal place using two-dimentional rectifying method by flat offset X i；
As the Yi=0 of Xi ≠ 0 for having at least two column foot and 4 column foots, the median X of at least two Xi is obtained, according to variation
Δ Xi=Xi-X is measured, each column foot is adjusted to by normal place using two-dimentional rectifying method.
When Vertical Settlement amount is not present in 4 column foots, horizontal offset occurs for only one column foot, only needs to correspond at this time
Rectify a deviation to the column foot, this is optimal solution.When horizontal offset occurs there are two or more column foots, adjust
When the horizontal offset of one of column foot, inevitably results in other column foot original horizontal offsets and change, in order to avoid
Adjusting lead to bigger variation, need the amplitude for adjusting each column foot to be adjusted to median, at this point, by median X come into
One successive step optimizes correction amount.
Further, when having and when the Yi of Xi ≠ 0 of only 1 column foot and 1 column foot ≠ 0, by measuring obtained water
Column foot is adjusted to normal place using two-dimentional rectifying method by flat offset X i and Vertical Settlement amount Yi；
As the Yi ≠ 0 of Xi ≠ 0 and at least two column foot that have at least two column foot, the median X and extremely of at least two Xi is obtained
The median Y of few 2 Yi is adjusted each column foot using two-dimentional rectifying method according to variation delta Xi=Xi-X, Δ Yi=Yi-Y
To normal place.
When horizontal offset occurs for only one column foot and when Vertical Settlement amount, only need at this time it is corresponding to the column foot into
Row correction, this is optimal solution.When horizontal offset and Vertical Settlement amount occurs there are two or more column foots, adjust
When the horizontal offset and Vertical Settlement amount of one of column foot, other column foot original horizontal offsets and vertical are inevitably resulted in
Settling amount changes, and leads to bigger variation in order to avoid adjusting, and the amplitude for adjusting each column foot is needed to be adjusted to intermediate
Value optimizes correction amount at this point, further adjusting by median X, Y.
Further, when Yi ≠ 0 of Xi ≠ 0 of at least two column foot and/or at least two column foot occurs, the correction
Method further include: first choose horizontal offset Xi and/or the smallest column foot of Vertical Settlement amount Yi is adjusted, subsequent real-time measurement
The Xi and/or Yi of remaining column foot are adjusted according to the practical Xi and/or Yi of remaining column foot.
When horizontal offset and/or Vertical Settlement amount occurs there are two or more column foots, one of tower is adjusted
When the horizontal offset and/or Vertical Settlement amount of foot, other column foot original horizontal offsets and/or Vertical Settlement are inevitably resulted in
Amount changes, can be first to one of column foot for the size for more accurately being rectified a deviation and being customized sleeve and switch base
It is preconditioned, the horizontal offset and/or Vertical Settlement amount of other column foots is then measured, according to the practical Xi of remaining column foot
And/or Yi, the size of sleeve and switch base is customized, is finally installed to sleeve and switch base correspondence under corresponding column foot i.e.
It can.Rectify a deviation caused by being avoided after all column foots once adjust using such mode error, reduce operating error, quickening adjust into
Degree.
Compared with prior art, the present invention can for different situations steel tower sedimentation offset handle, to urban district by
Tower position is limited, such as has poured the tower position feelings of complete secondary the to construct iron tower foundation or the stringing that should not take out stitches again remedied
Condition, in conjunction with hoisting mechanism and construction technology, without remove completely it is old build, can complete without creating again to self-supporting tower
The correction of tower seat can complete scene correction in very short power off time, and correction cost is very low, and to operation, department has
Extraordinary implementation convenience, it is ensured that the safety of electric power pylon and pedestrian.
Detailed description of the invention
Fig. 1 is error-correction structure schematic diagram of the present invention.
Fig. 2 is the perspective view of switch base.
Fig. 3 is the top view of Fig. 2.
Fig. 4 is the perspective view of switch base reinforcer.
Fig. 5 is the top view of Fig. 4.
Specific embodiment
Attached drawing of the present invention only for illustration, is not considered as limiting the invention.It is following in order to more preferably illustrate
Embodiment, the certain components of attached drawing have omission, zoom in or out, and do not represent the size of actual product；For art technology
For personnel, the omitting of some known structures and their instructions in the attached drawings are understandable.
Embodiment
As shown in Figure 1, the present embodiment provides a kind of self-supporting tower tower seat method for correcting error, suitable for having 4 column foots 1
Steel tower, the number of column foot 1 is (i=1,2,3,4) i, is connected on basic principal post 4 by foundation bolt, the basis principal post 4
On be additionally provided with concrete protective cap 2, foundation bolt is wrapped in, for protecting foundation bolt, the method includes walking as follows
It is rapid:
S1: in-site measurement calculates horizontal offset Xi and Vertical Settlement amount Yi of 4 column foots 1 compared to normal place；
S2: when correction adjustment, the original concrete protective cap 2 of column foot 1 is removed；
S3: steel tower is carried out by vertical applied force support using hoisting mechanism, selects suitable method of adjustment further according to Xi and Yi；
S4: as Xi=0 and Yi ≠ 0, the position of 4 column foots 1 is adjusted to by normal place using one-dimensional rectifying method；
As Xi ≠ 0, the position of 4 column foots 1 is adjusted to by normal place using two-dimentional rectifying method；
S5: after being adjusted to normal place, reinforced concrete protective cap 2 is poured again.
Technical solution of the present invention is directed in situ correction design of the existing steel tower under environment limited situation, such as steel tower
Positioned at old place, the route that should not have a power failure for a long time, the place that tower position should not be created should not be torn open, use the technical program can be with
Correction in situ is carried out to the conventional self-supporting tower of run-off the straight situation, that is, multiple column foots 1 form the steel tower of rectangle.Work as work
Make personnel after the daily exploration of machine row, receives some self-supporting tower tower seat and shift or settle, at this time, it may be necessary to first measure 4
A column foot 1 is compared to the horizontal offset Xi and Vertical Settlement amount Yi of normal place, and then, staff is according to each column foot 1
The correction amount of adjustment is actually needed, the structural member within the scope of pre-selection certain size is conveyed to scene.More accurately to pacify
The offset for filling and correcting column foot 1 needs the size precision to structural member to design, and in general, column foot 1 is solid by foundation bolt
It is scheduled on basic principal post, and one end of foundation bolt passes through the screw hole on column foot 1, is tightened using gasket and nut, the other end is pre-
It is embedded in basic principal post, and concrete protective cap needs to be coated on foundation bolt, gasket, nut and part column foot 1, for protecting
Protect foundation bolt.Therefore, it when carrying out correction adjustment, needs first to remove original concrete protective cap, makes to be coated on concrete
Part foundation bolt, gasket, nut and column foot 1 in protective cap expose, and then loosen original foundation bolt nut, make column foot plate
With foundation bolt without power transmission connection, then carries out lifting at the top of steel tower using hoisting mechanisms such as loop wheel machines or use jack mechanism will
Column foot 1 jacks up, and is in order to keep the state of steel tower for original nominal position, at this point it is possible to which precise measurement obtains 4 column foots always
1 has the choosing being directed in the specific variation according to Xi, Yi compared to the horizontal offset Xi and Vertical Settlement amount Yi of normal place
One-dimensional rectifying method or two-dimentional rectifying method are selected, the position of 4 column foots 1 is adjusted to normal place.As Xi=0 and Yi ≠ 0, explanation
Column foot 1 only has Vertical Settlement amount, and there is no horizontal-shifts, at this time, it is only necessary to the vertical big settling amount of the adjustment being directed to, i.e.,
Carry out one-dimensional correction.As Xi ≠ 0, illustrates that horizontal-shift has occurred in column foot 1, need to carry out the correction of horizontal direction, and at this time
No matter whether Yi is equal to 0, after steel tower is sling, when installing deviation correcting device, inevitably will appear the variation of Vertical Settlement amount,
It is also required to check and adjust vertical settling amount at this time, therefore, it is necessary to continue horizontal and vertical two dimensions using two-dimentional rectifying method
The correction of degree.Finally, after the completion of correction, that is, after column foot 1 is adjusted to normal place, need to re-start and pour, is formed
New concrete protective cap, it is ensured that foundation bolt is not corroded during subsequent O&M by external environment.The invention for because
The sedimentation of steel tower caused by loads change, geologic information inaccuracy are piled up in the sedimentation of steel tower caused by engineering construction is successively excavated, ground
When design fault caused by the steel tower sedimentation situations of the various bolt type connection types such as steel tower sedimentation can apply, expense can be with
More traditional correction scheme saves 90%, is even more that tear old new departure of building open incomparable for tradition in terms of implementation and convenience, can
To complete scene correction in very short power off time, and cost of rectifying a deviation is very low, has extraordinary implementation to operation department
Convenience, so that it is guaranteed that the safety of electric power pylon and pedestrian.
Preferably, in step S2, the one-dimensional rectifying method are as follows: by the size of Xi, extend or shorten anchor bolt length
L1, so that L1=-Xi, so that the position of column foot 1 is adjusted to normal place.
Preferably, as Xi > 0, by the continued access extension bolt on foundation bolt, foundation bolt is continuous with extension bolt
Connecing mode is directly to weld or pass through sleeve connection, and the continued access length is Xi；
As Xi < 0, by tightening foundation bolt, shorten column foot 1 and basic principal post top spacing-Xi.
One-dimensional rectifying method in the technical program leads to mainly by carrying out continued access to the reserved part of appearing of original place foot bolt
Cross the levelling differential settlement of foundation bolt reserved value adjusted under each column foot 1.Using there are two ways to, the first is to pre-buried lower margin
Bolt is appeared using special high strength steel sleeve continued access, internal thread of sleeve and foundation bolt and extend bolt be engaged it is identical, really
Protect extend bolt breakout capacity can be transferred to foundation bolt by sleeve, because foundation bolt dew high part can bear bending resistance,
Shearing resistance, tension level determine that continued access length should not be too large, and need to match with actual conditions, therefore mainly for the tower of smaller sedimentation
Position and the lesser tangent tower application of basic role power, but this kind of scheme is most easily implemented, and is the smallest on status construction, the influence that has a power failure
Processing scheme.Second is directly by foundation bolt and extension bolt by being welded to connect, and such mode is simple and convenient, but by
It will cause stress offset in the mode directly welded, therefore, it is suitable for the lesser steel towers of stress.
As shown in Figures 2 and 3, in step S2, the two dimension rectifying method are as follows: by being provided with upper top surface 32 and bottom surface
Top surface 32, bottom surface 31 in switch base 3 are staggeredly arranged, by between upper top surface 32 and bottom surface 31 by 31 switch base 3
Height difference H and be staggered distance L2 so that L2=-Xi, H=-Yi, so that the position of column foot 1 is adjusted to normal place.
Two-dimentional rectifying method in the technical program is suitable for more severe containing the differential settlement including horizontal drift condition
Correction situation, be suitable for the maximum height differences of two column foots 1 for offset and reach 150mm or more, this kind of situation tilts journey
It spends larger, generally synchronizes and open variation with iron tower foundation root, the amplitude for needing to rectify a deviation is larger.This method is will to take on foundation bolt
Fall nut, a special switch base 3 is installed, which is to utilize upper top surface 32,31 plate of bottom surface
It is staggeredly arranged, foundation settlement bring basis root is adjusted in such a way that upper and lower foundation bolt center is staggered and opens variation.Especially
, if only vertical sedimentation occurs, it is not required to adjust basic root and opens, then use vertical support, i.e., upper top surface 32,31 plate of bottom surface
Corresponding arrangement, adjust Vertical Settlement by adjusting the height between upper 31 plate of bottom surface.It is opened for needing to adjust basic root
Then it is trapezoidal support, that is, goes up being staggeredly arranged for 31 plate of bottom surface, original column foot 1 is bolted in top, and lower part passes through bottom
Face 31 connects foundation bolt.By the way that switch base 3 is arranged on each column foot 1, not using the height difference filling-in between switch base 3
With the differential settlement between column foot 1, mended using the offset distance between the upper top surface 32 and bottom surface 31 of each switch base 3
The horizontal-shift put down between different column foots 1 is poor.The vertical height and horizontal extent that can be adjusted due to switch base 3 are very big, can be full
The conventional all correction situations of foot.The correction mode can adjust certain basic root and open and adjust differential settlement, be a kind of suitable
With the correcting offset of base processing method that condition is very loose, engineering adaptability is very wide.
In conjunction with shown in Fig. 4 and Fig. 5, the switch base 3 further includes tower stud 33 and setting in upper top surface 32 and bottom
Reinforcer between face 31, the foundation bolt is for fixing bottom surface 31 and basic principal post, and tower stud 33 is for fixing tower
Foot 1 and upper top surface 32, the reinforcer are used to support top surface 32 and bottom surface 31, the power of steel tower are transmitted to basic principal post
On.
The reinforcer includes the angle steel 332 and stiffener 331 being arranged between upper top surface 32 and bottom surface 31.It is described to add
Strength plate 331 is equipped with 2, and the two is arranged vertically, and upper top surface 32 and bottom surface 31 are separated into the 1st, 2,3,4 quadrant spaces respectively.
The angle steel 332 is equipped with 3, be separately positioned on vertically arranged 2 stiffeners 331 the 1st, 2, at 3 quadrants；Described 4th as
It limits the bottom surface 31 in space and is equipped with screw hole 311 corresponding with foundation bolt quantity and position, foundation bolt passes through screw hole
Switch base 3 is fixed on basic principal post top by 311.The quantity of the tower stud 33 is equal with foundation bolt, and relative position
It is corresponding with the relative position of foundation bolt, the spiral shell to match with 33 quantity of tower stud and position is offered on upper top surface 32
Column foot is fixed on upper top surface 32 by hole by tower stud 33.From Fig. 2 and Fig. 3 it is found that avoid tower stud 33 from occurring
It loosens, is additionally provided with gasket 35 on upper top surface 32, tightened on gasket 35 by one group of left-hand thread nut 34.
Upper top surface 32 and bottom surface 31 are welded into an entirety by stiffener 331 by the bottom surface 31, and angle steel 332 is set
It sets at upper top surface 32 and the periphery of bottom surface 31, the active force of steel tower is passed through into column foot 1, conversion base with the cooperation of stiffener 331
Seat 3 is transferred to foundation bolt, and structure is simple, can carry out cutting welding at the scene, and convenient and flexibility ratio of constructing is high.
When there are multiple column foots 1 for needing to rectify a deviation, for the workload for reducing entire steel tower correction, need to seek multiple towers
That is, in step s 2 optimal solution during foot 1 is rectified a deviation further includes determining the column foot 1 for needing to rectify a deviation according to different Xi and Yi
Minimum number.
As the Xi=0 of 4 column foots 1 and have and when the Yi of only 1 column foot 1 ≠ 0, by measuring obtained Vertical Settlement
Yi is measured, column foot 1 is adjusted to by normal place using one-dimensional rectifying method；
As the Yi of the Xi=0 of 4 column foots 1 and at least two column foot 1 ≠ 0, the median Y of at least two Yi is obtained, according to variation
Δ Yi=Yi-Y is measured, each column foot 1 is adjusted to by normal place using one-dimensional rectifying method.
When having and when the Yi=0 of Xi ≠ 0 of only 1 column foot 1 and 4 column foots 1, by measuring obtained horizontal-shift
Xi is measured, column foot 1 is adjusted to by normal place using two-dimentional rectifying method；
As the Yi=0 of Xi ≠ 0 for having at least two column foot 1 and 4 column foots 1, the median X of at least two Xi is obtained, according to change
Each column foot 1 is adjusted to normal place using two-dimentional rectifying method by change amount Δ Xi=Xi-X.
When having and when the Yi of Xi ≠ 0 of only 1 column foot 1 and 1 column foot 1 ≠ 0, by measuring obtained horizontal-shift
Xi and Vertical Settlement amount Yi is measured, column foot 1 is adjusted to by normal place using two-dimentional rectifying method；
As the Yi ≠ 0 of Xi ≠ 0 and at least two column foot 1 that have at least two column foot 1, obtain at least two Xi median X and
The median Y of at least two Yi, according to variation delta Xi=Xi-X, Δ Yi=Yi-Y, using two-dimentional rectifying method by each column foot 1
It is adjusted to normal place.
When Xi ≠ 0 of at least two column foot 1 and/or Yi ≠ 0 of at least two column foot 1 occur, the method for correcting error is also wrapped
It includes: first choosing the smallest column foot 1 of horizontal offset Xi and/or Vertical Settlement amount Yi and be adjusted, remaining tower of subsequent real-time measurement
The Xi and/or Yi of foot 1 are adjusted according to the practical Xi and/or Yi of remaining column foot 1.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the embodiment of the present invention, and simultaneously
Non- is the restriction to a specific embodiment of the invention.All spirit in claims of the present invention is appointed with made within principle
What modifications, equivalent substitutions and improvements etc., should all be included in the scope of protection of the claims of the present invention.
Claims (10)
1. a kind of self-supporting tower tower seat method for correcting error, suitable for the steel tower with 4 column foots, the column foot number is i (i=
1, it 2,3,4), is connected on basic principal post by foundation bolt, concrete protective cap is additionally provided on the basis principal post, by lower margin
In bolt is wrapped in, for protecting foundation bolt, which is characterized in that described method includes following steps:
S1: in-site measurement calculates horizontal offset Xi and Vertical Settlement amount Yi of 4 column foots compared to normal place；
S2: when correction adjustment, the original concrete protective cap of column foot is removed；
S3: steel tower is carried out by vertical applied force support using hoisting mechanism, selects suitable method of adjustment further according to Xi and Yi；
S4: as Xi=0 and Yi ≠ 0, the position of 4 column foots is adjusted to by normal place using one-dimensional rectifying method；
As Xi ≠ 0, the position of 4 column foots is adjusted to by normal place using two-dimentional rectifying method；
S5: after being adjusted to normal place, casting concrete protective cap again.
2. a kind of self-supporting tower tower seat method for correcting error according to claim 1, which is characterized in that described in step S2
One-dimensional rectifying method are as follows: by the size of Xi, extend or shorten anchor bolt length L1, so that L1=-Xi, thus by the position of column foot
It sets and is adjusted to normal place.
3. a kind of self-supporting tower tower seat method for correcting error according to claim 2, which is characterized in that
As Xi > 0, by the continued access extension bolt on foundation bolt, foundation bolt and the continued access mode for extending bolt are direct
Welding passes through sleeve connection, and the continued access length is Xi；
As Xi < 0, by tightening foundation bolt, shorten the spacing-Xi of column foot and basic principal post.
4. a kind of self-supporting tower tower seat method for correcting error according to claim 1, which is characterized in that described in step S2
Two-dimentional rectifying method are as follows: by being provided with the switch base of upper top surface and bottom surface, top surface, bottom surface in switch base are staggered
Arrangement, by height difference H between upper top surface and bottom surface and the distance L2 that is staggered, so that L2=-Xi, H=-Yi, thus by tower
The position of foot is adjusted to normal place.
5. a kind of self-supporting tower tower seat method for correcting error according to claim 4, which is characterized in that the switch base is also
Including tower stud and the reinforcer being arranged between upper top surface and bottom surface, the foundation bolt is for fixing bottom surface and base
Plinth principal post, tower stud is for fixing column foot and upper top surface, and the reinforcer is used to support top surface and bottom surface, by steel tower
Power is transmitted on basic principal post.
6. described in any item a kind of self-supporting tower tower seat method for correcting error according to claim 1~5, which is characterized in that in step
It further include that the minimum number for needing the column foot rectified a deviation is determined according to different Xi and Yi in rapid S2.
7. a kind of self-supporting tower tower seat method for correcting error according to claim 6, which is characterized in that
As the Xi=0 of 4 column foots and have and when the Yi of only 1 column foot ≠ 0, by measuring obtained Vertical Settlement amount Yi, adopts
Column foot is adjusted to normal place with one-dimensional rectifying method；
As the Yi of the Xi=0 of 4 column foots and at least two column foot ≠ 0, the median Y of at least two Yi is obtained, according to variable quantity
Each column foot is adjusted to normal place using one-dimensional rectifying method by Δ Yi=Yi-Y.
8. a kind of self-supporting tower tower seat method for correcting error according to claim 6, which is characterized in that
When having and when the Yi=0 of Xi ≠ 0 of only 1 column foot and 4 column foots, by measuring obtained horizontal offset Xi, adopt
Column foot is adjusted to normal place with two-dimentional rectifying method；
As the Yi=0 of Xi ≠ 0 for having at least two column foot and 4 column foots, the median X of at least two Xi is obtained, according to variation
Δ Xi=Xi-X is measured, each column foot is adjusted to by normal place using two-dimentional rectifying method.
9. a kind of self-supporting tower tower seat method for correcting error according to claim 6, which is characterized in that
When having and when the Yi of Xi ≠ 0 of only 1 column foot and 1 column foot ≠ 0, by measure obtained horizontal offset Xi and
Column foot is adjusted to normal place using two-dimentional rectifying method by Vertical Settlement amount Yi；
As the Yi ≠ 0 of Xi ≠ 0 and at least two column foot that have at least two column foot, the median X and extremely of at least two Xi is obtained
The median Y of few 2 Yi is adjusted each column foot using two-dimentional rectifying method according to variation delta Xi=Xi-X, Δ Yi=Yi-Y
To normal place.
10. any one or a kind of 7~9 described in any item self-supporting tower tower seat method for correcting error according to claim 1~5,
It is characterized in that, when Xi ≠ 0 of at least two column foot and/or Yi ≠ 0 of at least two column foot occur, the method for correcting error is also wrapped
It includes: first choosing horizontal offset Xi and/or the smallest column foot of Vertical Settlement amount Yi is adjusted, remaining column foot of subsequent real-time measurement
Xi and/or Yi, be adjusted according to the practical Xi and/or Yi of remaining column foot.
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