CN108824171A - A kind of damping marmem anchor bolt and its setting method suitable for head tower cable-stayed bridge - Google Patents
A kind of damping marmem anchor bolt and its setting method suitable for head tower cable-stayed bridge Download PDFInfo
- Publication number
- CN108824171A CN108824171A CN201810896702.0A CN201810896702A CN108824171A CN 108824171 A CN108824171 A CN 108824171A CN 201810896702 A CN201810896702 A CN 201810896702A CN 108824171 A CN108824171 A CN 108824171A
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- Prior art keywords
- head tower
- marmem
- hex nut
- stayed bridge
- nut
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
The invention discloses a kind of damping marmem anchor bolts suitable for head tower cable-stayed bridge, marmem anchor pole bottom is connect at the top of common steel anchor rod by octagon nut, the first circular shim is equipped at the top of marmem anchor pole, the first circular shim is fixedly mounted on marmem anchor pole by the first hex nut and the second hex nut.The present invention consumes the energy of Seismic input using high flexibility, Low rigidity and the hyperelastic characteristic of marmem anchor pole significantly, reduces the residual displacement of head tower, to mitigate earthquake to the earthquake of head tower cable-stayed bridge, and can promote the Self-resetting of head tower；Method of the invention can increase head tower to the resistivity of lateral shearing stress, in practical applications be the resistant function to wind load, be effective against the pulling force of wind-induced horizontal direction shearing and vertical direction.
Description
Technical field
The present invention relates to technical field of bridge engineering more particularly to a kind of damping shape memories suitable for head tower cable-stayed bridge
Alloy anchor bolt and its setting method.
Background technique
China's First cable-stayed bridge is the Sichuan Yunyang bridge built in 1975.So far from the nineties in last century, by not
It is disconnected to employ new technology, explore new method, the development for making Chinese cable-stayed bridge field be advanced by leaps and bounds, to make China's cable-stayed bridge
Development strides into advanced ranks in the world with construction.Since China is the country of a more earthquakes, also have for bridge earthquake resistance relatively high
It is required that normal cable-stayed bridge bridge tower is made of armored concrete, when earthquake, easily cracks, and causes pontic impaired, anti-seismic performance is poor.
Therefore, the cable-stayed bridge good there is an urgent need to a kind of anti-seismic performance.Then, head tower cable-stayed bridge comes into being.
The statically indeterminate structure system that head tower cable-stayed bridge is made of girder, drag-line, head tower three parts, wherein head tower is main
Primary structure member, the load forms such as body of a bridge self weight, vehicular load are transmitted on head tower by drag-line, form overall load-bearing stress
System.Other than good seismic performance, also reside in the advantages of head tower cable-stayed bridge that its span ability is big, structural behaviour is good, construction is simple
Just, for ease of maintenaince, cost is lower and the light and handy beauty of shape etc., in addition, it is oblique to impart head tower due to the recyclable recycling of steel
Draw the environmentally protective feature of bridge, it then follows the theory of sustainable development.
In head tower Cable-Stayed Bridge Structure, anchor bolt is widely used in head tower cable-stayed bridge head tower and bridge pier junction.Currently, in steel
Pylon cable-stayed bridge field, the anchor bolt used are largely made of common iron according to certain design load.Common iron intensity is high,
Though biggish load can be resisted, its flexibility is lower, and energy dissipation capacity is limited, and accumulation overstrain is easy in CYCLIC LOADING,
So steel anchor bolt is relatively easy to happen destruction after undergoing strong geological process, anchor pole is broken or is drawn out.To change
The anti-seismic performance of kind anchor bolt, increasing Shape Memory Alloy member in anchor bolt is an effective approach.Marmem exists
Deformation aspect does well.Other metals usually show transgranular dislocation in deformation, and marmem then shows phase
Become, i.e. the spontaneous displacement of martensite and austenite crystal compartment.Under outer load action, marmem shows super-elasticity spy
Property, original shape can be restored after it repeated deformation.The stress-strain hysteresis loop of marmem is relatively fuller
It is full, therefore marmem has good energy-dissipating property.Just because of its superior shock-resistance features, marmem exists
Building field has received widespread attention, but shortage is but compared in its research and the relevant technologies in terms of head tower cable-stayed bridge.
Summary of the invention
The purpose of the present invention is overcome the deficiencies of the prior art and provide a kind of damping shape note suitable for head tower cable-stayed bridge
Recall alloy anchor bolt and its setting method.
Technical scheme is as follows：A kind of damping marmem anchor bolt suitable for head tower cable-stayed bridge, including
First hex nut, the second hex nut, the first circular shim, marmem anchor pole, octagon nut, common steel anchor
Bar, the second circular shim and third hex nut, wherein：At the top of marmem anchor pole bottom and common steel anchor rod
It is connected by octagon nut, the first circular shim is equipped at the top of marmem anchor pole, the first circular shim passes through the one or six
Angle nut and the second hex nut are fixedly mounted on marmem anchor pole, and it is round that common steel anchor rod bottom is equipped with second
Backing plate, the second circular shim are fixedly mounted on common steel anchor rod by third hex nut.
Preferably, the yield strength of the common steel anchor rod of yield strength ratio of the marmem anchor pole is low.
Preferably, the both ends of the marmem anchor pole and common steel anchor rod are equipped with the outer spiral shell of unified specification
The internal screw thread of line, the external screw thread and the first hex nut, the second hex nut, octagon nut and third hex nut matches.
Preferably, first hex nut, the second hex nut and third hex nut are designed to identical size, described
First circular shim and the second circular shim are designed to identical size.
Preferably, the diameter of first circular shim is 3-4 times of the second hex nut circumscribed circle diameter.
Preferably, the marmem anchor pole is made of Nitinol, and common steel anchor rod uses common iron
It is made.
Preferably, it can also be designed to steel curved bars for the common steel anchor rod.
A kind of setting method of the damping marmem anchor bolt suitable for head tower cable-stayed bridge, wherein：Installation method is such as
Under：S1, marmem anchor pole connected with common steel anchor rod by octagon nut first；
S2, then the second circular shim of installation and third hex nut, and the second backing plate point is welded in ordinary steel anchor pole
On；
S3, above structure is mounted in the concrete block of concrete pier in pre-buried mode；
S4, after concrete strength is up to standard, the bottom of head tower is installed, then the first circular shim, second are successively installed
Hex nut and the first hex nut, the first hex nut and the second hex nut are for fixing the first circular shim and head tower
The head tower of cable-stayed bridge, and bridge floor is installed in head tower waist, bridge floor both ends are lifted on head tower top by drag-line, in concrete pier
Concrete foundation absolute altitude when there is deviation, the position for adjusting the first hex nut, the second hex nut, the first backing plate can also be passed through
It sets to adjust absolute altitude, to overcome unfavorable factor caused by the deviation of work progress, effectively improves head tower cable-stayed bridge concrete bridge
The bearing capacity of pier.
Preferably, multiple flanges can be designed according to demand in head tower and concrete pier junction in the S4, flange is
The flange of the first circular slab, the second hex nut and the anchoring of the first hex nut at the top of marmem anchor pole, i.e., it is multiple
Anchor bolt is anchored, and can increase head tower to the resistivity of lateral shearing stress, is in practical applications to support to wind load
Anti- effect.
Technical effect and advantage of the invention：
1, by the way that marmem anchor pole is arranged in anchor bolt top half, made using its high flexibility, the characteristic of Low rigidity
Head tower structural system has certain function of shock insulation to inputting seismic energy, by the horizontal movement and longitudinal movement of head tower, significantly
Consume the energy of Seismic input；
2, the stress-strain hysteresis loop of marmem anchor pole is fuller, and large energy is can absorb in earthquake；
3, head tower can be restored to original position automatically using the super-elasticity of marmem anchor pole, reduces steel
The residual displacement of tower, to mitigate earthquake to the earthquake of head tower cable-stayed bridge, marmem anchor pole play to head tower from
Reset response；
4, the present invention can increase head tower to the resistivity of lateral shearing stress, in practical applications be to wind load
Resistant function is effective against the pulling force of wind-induced horizontal direction shearing and vertical direction.
Detailed description of the invention
Fig. 1 is the front view of anchor bolt of the present invention.
Fig. 2 is three-dimensional figure of the invention.
Fig. 3 is anchor bolt exploded view of the present invention.
Fig. 4 is the general arrangement that the present invention is applied to head tower cable-stayed bridge.
Fig. 5 is the enlarged drawing that the present invention is applied to head tower cable-stayed bridge head tower and concrete pier junction.
Fig. 6 is the local structure figure of the invention applied at head tower and concrete pier.
Fig. 7 is operation schematic diagram of the present invention in earthquake.
Fig. 8 is that schematic diagram is arranged in anchor bolt group of the invention.
Fig. 9 is the schematic diagram of another structure of common steel anchor rod of the invention.
In figure：The first hex nut of 1-, the second hex nut of 2-, the first circular shim of 3-, 4- marmem anchor pole,
The common steel anchor rod of 5- octagon nut, 6-, the second circular shim of 7-, 8- third hex nut, 9- head tower, 10- bridge floor, 11- are mixed
Solidifying soil bridge pier, 12- drag-line, 13- flange, 14- steel curved bar.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1 please refers to Fig. 1, Fig. 2 and Fig. 3, a kind of damping marmem anchor suitable for head tower cable-stayed bridge
Bolt, including the first hex nut 1, the second hex nut 2, the first circular shim 3, marmem anchor pole 4, octagon nut 5,
Common steel anchor rod 6, the second circular shim 7 and third hex nut 8, wherein：4 bottom of marmem anchor pole with it is general
It is connected at the top of logical steel anchor rod 6 by octagon nut 5, is equipped with the first circular shim 3 at the top of marmem anchor pole 4, first
Circular shim 3 is fixedly mounted on marmem anchor pole 4 by the first hex nut 1 and the second hex nut 2, ordinary steel
6 bottom of anchor pole processed is equipped with the second circular shim 7, and the second circular shim 7 is fixedly mounted on common steel by third hex nut 8
On anchor pole 6, the first circular shim 3 and the second circular shim 7 can increase the contact surface with the concrete surface of concrete pier 11
Product can prevent anchor bolt to be drawn out when undergoing earthquake, play the role of fixed anchor bolt.
Embodiment 2, referring to Fig. 7, a kind of damping marmem anchor bolt suitable for head tower cable-stayed bridge, wherein：Shape
The yield strength of the common steel anchor rod 6 of the yield strength ratio of shape memory alloys anchor pole 4 is low, it can be ensured that shape memory closes in earthquake
Golden 4 fully deformed of anchor pole, and common steel anchor rod 6 deform it is small.Remaining is the same as embodiment 1.
Embodiment 3 please refers to Fig. 1, Fig. 2 and Fig. 3, a kind of damping marmem anchor suitable for head tower cable-stayed bridge
Bolt, wherein：The both ends of marmem anchor pole 4 and common steel anchor rod 6 are equipped with the external screw thread of unified specification, the external screw thread
Match with the internal screw thread of the first hex nut 1, the second hex nut 2, octagon nut 5 and third hex nut 8.Remaining is the same as real
Apply example 1.
Embodiment 4 please refers to Fig. 1, Fig. 2 and Fig. 3, a kind of damping marmem anchor suitable for head tower cable-stayed bridge
Bolt, wherein：First hex nut 1, the second hex nut 2 and third hex nut 8 are designed to identical size, and described first is round
Backing plate 3 and the second circular shim 7 are designed to identical size, in practice of construction installation, can be replaced mutually, improve installation
Efficiency.Remaining is the same as embodiment 1.
Embodiment 5 please refers to Fig. 1, Fig. 2 and Fig. 3, a kind of damping marmem anchor suitable for head tower cable-stayed bridge
Bolt, wherein：The diameter of first circular shim 3 is 3-4 times of 2 circumscribed circle diameter of the second hex nut, can prevent anchor bolt experience ground
It is drawn out when shake, plays the role of fixed anchor bolt.Remaining is the same as embodiment 1.
Embodiment 6, a kind of damping marmem anchor bolt suitable for head tower cable-stayed bridge, wherein：Marmem
Anchor pole 4 is made of Nitinol, and common steel anchor rod 6 is made of common iron, can mitigate earthquake to head tower cable-stayed bridge
Injury, protection head tower cable-stayed bridge it is safe while reduce installation cost.Remaining is the same as embodiment 1.
Embodiment 7, referring to Fig. 9, a kind of damping marmem anchor bolt suitable for head tower cable-stayed bridge, wherein：It is general
Lead to steel anchor rod 6 it can also be designed to steel curved bar 14, can reduce the area occupied of anchor pole in same plane in concrete, thus
Enhance the anchoring efficiency of anchor system.Remaining is the same as embodiment 1.
Embodiment 8 please refers to Fig. 4-Fig. 6, and a kind of damping marmem anchor bolt suitable for head tower cable-stayed bridge is set
Method is set, wherein：Installation method is as follows：S1, marmem anchor pole 4 and common steel anchor rod 6 passed through into octagonal spiral shell first
Mother 5 connects；
S2, then installation the second circular shim 7 and third hex nut 8, and by the second backing plate 7 points be welded in ordinary steel anchor
On bar 6；
S3, above structure is mounted in the concrete block of concrete pier 11 in pre-buried mode；
S4, after concrete strength is up to standard, the bottom of head tower 9 is installed, then the first circular shim 3, are successively installed
Two hex nuts 2 and the first hex nut 1, the first hex nut 1 and the second hex nut 2 are for fixing the first circular shim 3
And the head tower 9 of head tower cable-stayed bridge, and bridge floor 10 is installed in 9 waist of head tower, 10 both ends of bridge floor are lifted on head tower 9 by drag-line 12
Top can also be by adjusting the first hex nut 1, second when deviation occurs in the concrete foundation absolute altitude of concrete pier 11
Hex nut 2, first backing plate 3 position adjust absolute altitude, to overcome unfavorable factor caused by the deviation of work progress, effectively
Improve the bearing capacity of head tower cable-stayed bridge concrete pier 11.
Embodiment 9, referring to Fig. 8, a kind of setting side of the damping marmem anchor bolt suitable for head tower cable-stayed bridge
Method, wherein：Marmem anchor pole 4 can restore to be no more than 6% to 8% to the strain section of original form, be more than in strain
When 6% to 8%, marmem anchor pole 4 generates strain hardening, 4 flexibility decrease of marmem anchor pole, non-deformability
Enhancing, therefore has overstrain after removing load, cannot be fully returned to original shape, and tower top can be with to the response of earthquake
Increase, and stress-strain hysteresis loop turgor substantially reduces at this time, also drops therewith to the absorbability of seismic energy
It is low, for avoid it is such happen, multiple flanges can be designed according to demand in head tower 9 and 11 junction of concrete pier in S4
13, flange 13 is 1 anchor of the first circular slab 3, the second hex nut 2 and the first hex nut at 4 top of marmem anchor pole
Solid flange, i.e., multiple anchor bolts are anchored, and can increase the resistivity of 9 pairs of head tower lateral shearing stress, in practical applications
As to the resistant function of wind load.
Claims (9)
1. a kind of damping marmem anchor bolt suitable for head tower cable-stayed bridge, including the first hex nut (1), the second hexagonal
Nut (2), the first circular shim (3), marmem anchor pole (4), octagon nut (5), common steel anchor rod (6), second
Circular shim (7) and third hex nut (8), it is characterised in that：Marmem anchor pole (4) bottom and common steel
It is connected at the top of anchor pole (6) by octagon nut (5), is equipped with the first circular shim (3) at the top of marmem anchor pole (4), the
One circular shim (3) is fixedly mounted on marmem anchor pole by the first hex nut (1) and the second hex nut (2)
(4) on, common steel anchor rod (6) bottom is equipped with the second circular shim (7), and the second circular shim (7) passes through third hex nut
(8) it is fixedly mounted on common steel anchor rod (6).
2. a kind of damping marmem anchor bolt suitable for head tower cable-stayed bridge according to claim 1, feature exist
In：The yield strength of the common steel anchor rod of yield strength ratio (6) of the marmem anchor pole (4) is low.
3. a kind of damping marmem anchor bolt suitable for head tower cable-stayed bridge according to claim 1, feature exist
In：The both ends of the marmem anchor pole (4) and common steel anchor rod (6) are equipped with the external screw thread of unified specification, this is outer
The internal screw thread phase of screw thread and the first hex nut (1), the second hex nut (2), octagon nut (5) and third hex nut (8)
Matching.
4. a kind of damping marmem anchor bolt suitable for head tower cable-stayed bridge according to claim 1, feature exist
In：First hex nut (1), the second hex nut (2) and third hex nut (8) are designed to identical size, described
One circular shim (3) and the second circular shim (7) are designed to identical size.
5. a kind of damping marmem anchor bolt suitable for head tower cable-stayed bridge according to claim 1, feature exist
In：The diameter of first circular shim (3) is 3-4 times of the second hex nut (2) circumscribed circle diameter.
6. a kind of damping marmem anchor bolt suitable for head tower cable-stayed bridge according to claim 1, feature exist
In：The marmem anchor pole (4) is made of Nitinol, and common steel anchor rod (6) is made of common iron.
7. a kind of damping marmem anchor bolt suitable for head tower cable-stayed bridge according to claim 1, feature exist
In：It can also be designed to steel curved bar (14) for the common steel anchor rod (6).
8. a kind of setting method of the damping marmem anchor bolt suitable for head tower cable-stayed bridge, it is characterised in that：S1, first
Marmem anchor pole (4) and common steel anchor rod (6) are connected by octagon nut (5)；
S2, then installation the second circular shim (7) and third hex nut (8), and the second backing plate (7) point is welded in ordinary steel system
On anchor pole (6)；
S3, above structure is mounted in the concrete block of concrete pier (11) in pre-buried mode；
S4, after concrete strength is up to standard, the bottom of head tower (9) is installed, then the first circular shim (3), are successively installed
Two hex nuts (2) and the first hex nut (1), the first hex nut (1) and the second hex nut (2) are for fixing the first circle
The head tower (9) of shape backing plate (3) and head tower cable-stayed bridge, and bridge floor (10) are installed in head tower (9) waist, bridge floor (10) both ends pass through
Drag-line (12) is lifted on head tower (9) top, when deviation occurs in the concrete foundation absolute altitude of concrete pier (11), can also pass through
Adjust the first hex nut (1), the second hex nut (2), the first backing plate (3) position adjust absolute altitude, constructed with overcoming
Unfavorable factor caused by the deviation of journey effectively improves the bearing capacity of head tower cable-stayed bridge concrete pier (11).
9. a kind of setting side of damping marmem anchor bolt suitable for head tower cable-stayed bridge according to claim 8
Method, it is characterised in that：In the S4 multiple flanges can be designed according to demand in head tower (9) and concrete pier (11) junction
(13), flange (13) is the first circular slab (3), the second hex nut (2) and the one or six at the top of marmem anchor pole (4)
The flange of angle nut (1) anchoring, i.e., multiple anchor bolts are anchored, and can increase head tower (9) to the resistivity of lateral shearing stress,
It is in practical applications the resistant function to wind load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810896702.0A CN108824171B (en) | 2018-08-08 | 2018-08-08 | Shock-absorbing shape memory alloy anchor bolt suitable for steel tower cable-stayed bridge and setting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810896702.0A CN108824171B (en) | 2018-08-08 | 2018-08-08 | Shock-absorbing shape memory alloy anchor bolt suitable for steel tower cable-stayed bridge and setting method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108824171A true CN108824171A (en) | 2018-11-16 |
| CN108824171B CN108824171B (en) | 2023-07-28 |
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ID=64152997
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810896702.0A Active CN108824171B (en) | 2018-08-08 | 2018-08-08 | Shock-absorbing shape memory alloy anchor bolt suitable for steel tower cable-stayed bridge and setting method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108824171B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004225411A (en) * | 2003-01-24 | 2004-08-12 | Topy Ind Ltd | Anchoring bolt device for bridge pier or the like |
| CN101575883A (en) * | 2009-06-02 | 2009-11-11 | 同济大学 | Energy-consuming shock absorber |
| CN205443914U (en) * | 2016-01-06 | 2016-08-10 | 上海应用技术学院 | Adopt shape memory alloy reinforcing bar to have prefabricated pin -connected panel pier of runback potential energy power |
| CN107035203A (en) * | 2017-06-07 | 2017-08-11 | 沈阳建筑大学 | A kind of SMA energy consumers prestressing without bondn system |
| CN107288216A (en) * | 2017-06-29 | 2017-10-24 | 同济大学 | A kind of self-resetting swinging reinforced column based on marmem |
| WO2018060784A1 (en) * | 2016-12-20 | 2018-04-05 | Jamalpournajmabad Reza | Self-centering steel column- foundation connection, equipped with super elastic nitinol shape memory alloy |
-
2018
- 2018-08-08 CN CN201810896702.0A patent/CN108824171B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004225411A (en) * | 2003-01-24 | 2004-08-12 | Topy Ind Ltd | Anchoring bolt device for bridge pier or the like |
| CN101575883A (en) * | 2009-06-02 | 2009-11-11 | 同济大学 | Energy-consuming shock absorber |
| CN205443914U (en) * | 2016-01-06 | 2016-08-10 | 上海应用技术学院 | Adopt shape memory alloy reinforcing bar to have prefabricated pin -connected panel pier of runback potential energy power |
| WO2018060784A1 (en) * | 2016-12-20 | 2018-04-05 | Jamalpournajmabad Reza | Self-centering steel column- foundation connection, equipped with super elastic nitinol shape memory alloy |
| CN107035203A (en) * | 2017-06-07 | 2017-08-11 | 沈阳建筑大学 | A kind of SMA energy consumers prestressing without bondn system |
| CN107288216A (en) * | 2017-06-29 | 2017-10-24 | 同济大学 | A kind of self-resetting swinging reinforced column based on marmem |
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| Publication number | Publication date |
|---|---|
| CN108824171B (en) | 2023-07-28 |
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