A kind of transition section structure connecting steel tower tube and prestressed concrete tower cylinder
Technical field
The present invention relates to the technical field of blower fan pylon, refer in particular to a kind of connection steel tower tube and prestressed concrete
The transition section structure of soil tower.
Background technology
Wind energy is a kind of renewable and clean energy resource, and its storage level is big, is that current world community falls over each other the new of exploitation
One of energy pattern.At present, wind power generating set trends towards high-power, needs enough hub heights
Obtain more wind energy, more and more higher in the tower height being used to support wind power generating set.Meanwhile,
Along with impeller diameter increases, the load that wind load produces is the most increasing so that tower weight is increasing.With
The development of wind generating technology, occur in that concrete-steel combination pylon, i.e. existing steel tower is erected at mixed
Coagulate on soil pylon thus improve wind wheel height.
Prior art uses the stretch-draw anchor directly carrying out presstressed reinforcing steel on the flange contacted with top of concrete
Gu, stretching process easily causes regional area concrete stress and concentrates, cause concrete rupture.
In prior art, the position of prestressing with bond muscle stretch-draw anchor is in the outside of tower, if in advance should in using
Power muscle occurs lax to need pretension or presstressed reinforcing steel to be pulled off to need to change, and attendant needs outside tower
Face carries out operation, brings the biggest inconvenience and personal safety hidden danger to attendant.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of connection steel tower tube and prestressing force mix
The transition section structure of solidifying soil tower, can effectively solve concrete tower and easily ftracture and be anchored at outside tower
The problem that the prestressing with bond muscle in portion is difficult in maintenance.
For achieving the above object, technical scheme provided by the present invention is: a kind of connection steel tower tube and prestressing force
The transition section structure of concrete tower, including the first company that upper and lower two sections of central axes and radius are consistent
Connect steel cylinder and second and connect steel cylinder, and the first flange, the second flange, annular backup pad, concrete segment;Institute
Stating steel tower tube to be connected with the first end face connecting steel cylinder by the first flange, described first connects steel cylinder passes through the
Two flanges and second connect steel cylinder and connect, and described second connects steel cylinder by annular backup pad with concrete segment even
Connecing, described concrete segment is connected with concrete tower, and described concrete tower is fixed on the coagulation soil matrix on ground
On plinth;Being taken up in order of priority anchoring to have prestressing with bond muscle and external prestressing steels on described second flange, this is internal
The anchorage point of presstressed reinforcing steel is near the first barrel connecting steel cylinder, and the anchorage point of this external prestressing steels is remote
From the first barrel connecting steel cylinder;Described annular backup pad connects with the end face of concrete segment, this annular brace
Plate is welded under inner annular anchor plate and outer annular anchor plate, this inside and outside annular anchor plate
Central axis and above-mentioned first, second central axes being connected steel cylinder, wherein inner annular anchoring steel
The radius of plate is consistent with the inner side annulus radius of annular backup pad, the radius of outer annular anchor plate and annular
The outside annulus radius of gripper shoe is consistent, and described annular backup pad circumferentially offers multiple concrete grouting
Hole, by concrete grouting hole fill concrete between two annular anchor plates;Described second flange and ring
Being provided with the ribs of interlaced arrangement between shape gripper shoe, the second flange is separated by ribs with concrete segment;Institute
State and between inner annular anchor plate and outer annular anchor plate, be circumferentially evenly arranged with multiple vertical reinforcement
Plate, the end face of vertical reinforcing plate is connected with annular backup pad, and its side anchors with respective inner annular
Steel plate or outer annular anchor plate connect;It is equipped with multiple internal on described second flange and annular backup pad
Prestressed pore passage and external prestressing duct, described prestressing with bond muscle passes the second flange and annular backup pad
Upper corresponding prestressing with bond duct enters in concrete segment, and down through this concrete segment and concrete towers
Cylinder is connected in concrete foundation;Described external prestressing steels is through corresponding on the second flange and annular backup pad
External prestressing duct, pass from concrete segment and be connected in concrete foundation.
The bottom surface of described annular backup pad is provided with the anchor bar extending downwardly in concrete segment, and described anchoring
Reinforcing bar and concrete segment are an entirety admittedly.
On the plate face that described inner annular anchor plate is relative with outer annular anchor plate each even equipped with steel anchor
Bolt.
It is formed with taper seat between internal face and the internal face of concrete segment of described inner annular anchor plate.
Be provided with prestressing with bond in described concrete segment and wear muscle hole and external prestressing wears muscle hole, this internal pre-should
Power is provided with internal muscle built-in steel sleeve in wearing muscle hole, this external prestressing is provided with external tendon with pre-in wearing muscle hole
Bury steel bushing.
The present invention compared with prior art, has the advantage that and beneficial effect:
The present invention is multiple along week by arranging between concrete segment end face and the second flange of anchoring prestress muscle
To uniform ribs, presstressed reinforcing steel being anchored face to separate with top of concrete, optimizing stress distribution and stress pass
Pass path, reduce stress and concentrate the tension of prestressed tendon caused to anchor the destruction that concrete is caused;Meanwhile,
Internal and external prestressing steels are arranged at inside tower, consequently facilitating presstressed reinforcing steel is safeguarded by the later stage,
Reduce O&M cost.
Accompanying drawing explanation
Fig. 1 is transition section structure schematic diagram.
Fig. 2 is that changeover portion assembles schematic diagram.
Fig. 3 is the assembling schematic diagram after changeover portion cast concrete.
Fig. 4 is the A-A sectional view of Fig. 3.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described.
As shown in Figures 1 to 4, the connection steel tower tube described in the present embodiment and the mistake of prestressed concrete tower cylinder
Cross segment structure, including the first connection steel cylinder 3 and second that upper and lower two sections of central axes and radius are consistent
Connect steel cylinder 12, and first flange the 2, second flange 4, annular backup pad 8, prestressing with bond muscle 14, body
External prestressed muscle 13, concrete segment 15;Described steel tower tube 1 is connected steel cylinder 3 by the first flange 2 with first
End face connect, described first connects steel cylinder 3 is connected steel cylinder 12 by the second flange 4 with second and connects, institute
State the second connection steel cylinder 12 to be connected with concrete segment 15 by annular backup pad 8, described concrete segment 15 and
Concrete tower 26 connects, and described concrete tower 26 is fixed in the concrete foundation on ground;Described body
Interior presstressed reinforcing steel 14 and external prestressing steels 13 are taken up in order of priority and are anchored on the second flange 4, this internal pre-should
The anchorage point of power muscle 14 is near the first barrel connecting steel cylinder 3, the anchoring position of this external prestressing steels 13
Put away from the first barrel connecting steel cylinder 3;Described annular backup pad 8 connects with the end face of concrete segment 15,
This annular backup pad 8 is welded under inner annular anchor plate 16 and outer annular anchor plate 17, this is interior,
The central axis of outer ring anchor plate 16,17 and above-mentioned first, second central shaft being connected steel cylinder 3,12
Line overlaps, and wherein the radius of inner annular anchor plate 16 is consistent with the inner side annulus radius of annular backup pad 8,
The radius of outer annular anchor plate 17 is consistent with the outside annulus radius of annular backup pad 8, and described annular is propped up
Multiple concrete grouting hole 5 is circumferentially offered, by concrete grouting hole 5 to two annular anchors on fagging 8
Gu fill concrete between steel plate;It is provided with adding of interlaced arrangement between described second flange 4 and annular backup pad 8
Strong rib 7 improves the rigidity of the second flange 4, and meanwhile, ribs 7 is by the second flange 4 of anchoring prestress muscle
Separating with concrete segment 15, stress when can reduce stretch-draw anchor is concentrated;Described inner annular anchor plate
Some vertical reinforcing plates 20 circumferentially it are evenly arranged with between 16 and outer annular anchor plate 17, all perpendicular
All being connected with annular backup pad 8 to the end face of reinforcing plate 20, the side of the vertical reinforcing plate 20 of a part is with interior
Portion's annular anchor plate 16 connects, the side of the vertical reinforcing plate of another part 20 and outer annular anchor plate
17 connect;Second flange 4 is provided with multiple prestressing with bond duct 18 and external prestressing duct 19, with
Time, annular backup pad 8 be provided with multiple with the second flange 4 on prestressing with bond duct 18 and external pre-should
Prestressing with bond duct 6 one to one, power duct 19 and external prestressing duct 27, described prestressing with bond
Muscle 14 enters concrete through prestressing with bond duct 18 corresponding on the second flange 4 and annular backup pad 8
In section 15, and down it is connected in concrete foundation through this concrete segment 15 and concrete tower 26;Institute
State external prestressing steels 13 and pass corresponding external prestressing duct 19 on the second flange 4 and annular backup pad 8,
Pass from concrete segment 15 and be connected in concrete foundation.
The bottom surface of annular backup pad 8 is provided with the anchor bar 11 extended downwardly in concrete segment 15, and described anchor
Gu reinforcing bar 11 and concrete segment 15 are an entirety admittedly, the globality of changeover portion can be improved, can support simultaneously
Bending resistance square and shearing force.
On the plate face that inner annular anchor plate 16 is relative with outer annular anchor plate 17 each even equipped with steel anchor
Bolt 9, improves the integral rigidity of changeover portion, improves the stress distribution of Path of Force Transfer and concrete, it is to avoid stress
The even stress of skewness is concentrated.
It is formed between internal face 21 and the internal face 23 of concrete segment 15 of inner annular anchor plate 16
Taper seat 22, can avoid stress to concentrate.
It is provided with prestressing with bond in described concrete segment 15 and wears muscle hole 28 and external prestressing wears muscle hole 29, should
Prestressing with bond is provided with internal muscle built-in steel sleeve 24 in wearing muscle hole 28, this external prestressing wears muscle hole 29
Inside it is provided with external tendon built-in steel sleeve 25.
In sum, the present invention is by being arranged on inside tower by presstressed reinforcing steel anchorage point, it is simple to the later stage pair
Prestressing with bond muscle is safeguarded, reduces maintenance cost;Tension of prestressed tendon anchorage point is away from concrete top
Face, centre is connected by ribs, uses this structure so that the power that upper steel tower produces is passed through even
Connect steel cylinder and flange is delivered to prestressed component, improve stress distribution, reduce stretching prestressed component anchor
Gu time stress concentrate and cause the excessive problem of concrete local stress, it also avoid stretch-draw anchor and cause coagulation
Rupturing of soil, is worthy to be popularized.
Embodiment described above is only the preferred embodiments of the invention, not limits the enforcement model of the present invention with this
Enclose, therefore the change that all shapes according to the present invention, principle are made, all should contain within the scope of the present invention.