CN206859088U - A kind of old suspension rod band stress provision for disengagement of arch bridge - Google Patents

A kind of old suspension rod band stress provision for disengagement of arch bridge Download PDF

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Publication number
CN206859088U
CN206859088U CN201720775105.3U CN201720775105U CN206859088U CN 206859088 U CN206859088 U CN 206859088U CN 201720775105 U CN201720775105 U CN 201720775105U CN 206859088 U CN206859088 U CN 206859088U
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China
Prior art keywords
anchor ear
suspension rod
flat plate
plate section
disengagement
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CN201720775105.3U
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Chinese (zh)
Inventor
朱妍
金仁兴
朱毅
金东华
王星
沈至毅
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SHANGHAI RAIL TRANSIT MAINTENANCE SUPPORT Co Ltd
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SHANGHAI RAIL TRANSIT MAINTENANCE SUPPORT Co Ltd
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Abstract

The utility model provides a kind of arch bridge old suspension rod band stress provision for disengagement, at the both ends of the cable body cutting position of suspension rod, constrains fixation by installing one group of anchor ear circle respectively；Each group of two anchor ear circles surround suspension rod provided with relative segmental arc, and are connected respectively by flat plate section in segmental arc both sides.Each anchor ear circle is fixedly connected with least one anchor ear ribbed stiffener；Between the anchor ear circle at cable body cutting position both ends, several connection straps arranged along length of boom direction are also provided with.Coordinate provision for disengagement of the present utility model, sub-symmetry is dismantled in batches along section to the steel wire of suspension rod, and sets the structural stress state of necessary construction monitoring measure monitoring bridge, can effectively be reduced suspension rod and be broken in unloading process the risk of accident.

Description

A kind of old suspension rod band stress provision for disengagement of arch bridge
Technical field
Arched bridge pre-stressed boom maintenance field is the utility model is related to, a kind of arch bridge especially suitable for suspender replacement construction usage is old Suspension rod band stress provision for disengagement.
Background technology
Current arched bridge pre-stressed boom changes Suo Fangfa, is first to set saddle on the arch rib of arch bridge, is faced by what is installed on saddle When rope floor beam is lifted, by interim rope apply tension force, the pulling force on old suspension rod is transferred on interim rope, then Old suspension rod is cut off again.
But in practice of construction, for various reasons, possibly the tension force on old suspension rod can not thoroughly be unloaded, cause to construct Stagnate, cause the waste of manpower and materials.
Utility model content
In order to solve problem existing for prior art, the utility model provides a kind of arch bridge old suspension rod band stress dismounting dress Put, it is ensured that arched bridge pre-stressed boom changes construction safety during rope, effectively saves construction period.
In order to achieve the above object, the utility model provides a kind of arch bridge old suspension rod band stress provision for disengagement, in suspension rod The both ends of cable body cutting position, constrain fixation by installing one group of anchor ear circle respectively；Each group of two anchor ear circles are provided with phase To segmental arc surround suspension rod.
Preferably, each anchor ear circle is respectively equipped with flat plate section in the both sides of segmental arc, makes phase on each group of two anchor ear circles The flat plate section answered is close to, and is fixedly connected with connector.
Preferably, each anchor ear circle is fixedly connected with least one anchor ear ribbed stiffener；
The flat plate section of the anchor ear ribbed stiffener and anchor ear circle is perpendicular, and outward flange of the anchor ear ribbed stiffener through side flat plate section is prolonged The outward flange of opposite side flat plate section is extended, the anchor ear ribbed stiffener also welds with the position contacted therewith on segmental arc and flat plate section Connection.
Preferably, between the cable body cutting position both ends anchor ear circle, by connector, with being arranged along length of boom direction Several connection straps be fixedly connected；
One end of each connection strap is connected to cable body cutting position first end anchor ear circle wherein in the flat plate section of side, the company The other end of narrow bars is connected in the flat plate section of the second end of cable body cutting position anchor ear circle the same side.
Preferably, the flat plate section of each anchor ear circle both sides, by anchor ear ribbed stiffener be divided into first while and when second；Cable body Second side of the flat plate section of cutting position both ends anchor ear circle is relative, and the first side is located remotely from each other；
Each connection strap is connected between the side of flat plate section second of described cable body cutting position both ends anchor ear circle the same side.
Preferably, the flat plate section of each anchor ear circle both sides is respectively equipped with some bolts hole；Some of first spiro keyhole positions In the first side of each flat plate section, high-strength bolt is connected by installing, one group of two anchor ear circles are fixedly connected；Other second Spiro keyhole position is in the second side of each flat plate section；By installing other connection high-strength bolts, by anchor ear circle and corresponding connection strap It is fixedly connected.
Preferably, the 3rd bolt hole is offered on the connection strap, it is relative with the second bolt hole in anchor ear circle flat plate section Should；The centre-to-centre spacing of hithermost two the 3rd bolts hole, the suspension rod diameter more than 8 times on the connection strap of suspension rod both sides.
Preferably, the tensile bearing capacity of every connection strap designs the 1/4 of Suo Li for suspension rod；
The segmental arc internal diameter of each anchor ear circle is identical with the diameter of suspension rod；The thickness of the anchor ear circle is its segmental arc internal diameter 1/10；
The thickness of the anchor ear ribbed stiffener is identical with the thickness of anchor ear circle.
Preferably, the sensitive position of failure risk on the suspension rod be present, be disposed with and connect with real-time data acquisition instrument signal The measuring point connect, comprising：The strain-ga(u)ge transducer of stress sensitive position is arranged on, is arranged on thousand points of displacement/deflection sensitive position Table, and the vibration pickup to suspender force monitoring.
Preferably, the suspension rod includes multigroup steel wire with different cutting orders；
The quantity of every group of steel wire, no more than 1/7 of steel wire sum in suspension rod before cutting；
Each group of cutting order is the steel wire of odd number, the steel wire with its later group cutting order for even number, in suspension rod section Kept on position symmetrical.
It is difficult to ensure that old suspension rod is in tension-free state when changing hanger construction for arch bridge, its direct cutting may be caused Suspension rod break accident the problem of, the utility model provides a kind of arch bridge old suspension rod band stress provision for disengagement, passes through special anchor ear Structure, suspension rod cable body is constrained at the both ends of cutting position.
Coordinate provision for disengagement of the present utility model, sub-symmetry is dismantled in batches along section to the steel wire of suspension rod, and sets necessity Construction monitoring measure monitoring bridge structural stress state, can effectively reduce suspension rod and be broken in unloading process the wind of accident Danger.
Brief description of the drawings
Fig. 1 is the schematic diagram that anchor ear circle is connected with anchor ear ribbed stiffener in the utility model；
Fig. 2 is the scheme of installation of anchor ear circle in the utility model；
Fig. 3 is that steel wire cutting order divides schematic diagram in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the band stress provision for disengagement of arch bridge of the present utility model old suspension rod is illustrated.
Coordinate shown in Fig. 1, Fig. 2, the old suspension rod band stress provision for disengagement of arch bridge, pass through anchor ear circle 10, the anchor ear of setting Ribbed stiffener 20, connection strap 30, connection high-strength bolt, form hooping structure.In the example, anchor ear circle 10 adds provided with four, anchor ear Strength rib 20 is provided with four provided with four, connection strap 30, and connection high-strength bolt has 24 secondary (not shown)s, and the quantity of each part can Accordingly to be adjusted according to actual conditions.
Wherein, each anchor ear circle 10 is provided with the flat plate section of a segmental arc and its both sides.The internal diameter of the segmental arc of anchor ear circle 10 It is identical with suspension rod diameter to be removed.The thickness of anchor ear circle 10, it is preferably the 1/10 of its internal diameter.
Each two anchor ear circle 10 is one group, makes the opening of its segmental arc relative, is trapped among the outer surface of suspension rod；By segmental arc Flat plate section is mutually close to, and is firmly connected by connecting high-strength bolt.In this way, suspension rod cable body cutting position top, Lower section is separately installed with one group of anchor ear circle 10 so that cable body cutting position is located at the centre of this two groups of anchor ear circles 10.
Each anchor ear circle 10 is correspondingly provided with least one anchor ear ribbed stiffener 20, and both weld in advance before suspension rod is attached to It is connected together.The thickness of anchor ear ribbed stiffener 20 is identical with the thickness of anchor ear circle 10, and the width of anchor ear ribbed stiffener 20 meets design rule The flakiness ratio of local stability in model on plate requires.
Perpendicular with the flat plate section of anchor ear circle 10, the outward flange of the anchor ear ribbed stiffener 20 through side flat plate section extends to separately The outward flange of side flat plate section, the anchor ear ribbed stiffener 20 are welded to connect with the position contacted therewith on segmental arc and flat plate section.
The flat plate section of each both sides of anchor ear circle 10 is respectively equipped with some bolts hole, and the spacing of bolt hole should meet relevant design The requirement of specification.Each flat plate section is divided into both sides by anchor ear ribbed stiffener 20, wherein, some first bolts hole 11 are located at each flat plate section The first side, other second bolts hole 12 are located at the second side of each flat plate section.When being attached to suspension rod, the first side of each flat plate section It is located remotely from each other, the installation connection high-strength bolt at the first bolt hole 11 corresponding with the first side, to connect two anchor ears being close to Circle 10；Second side of each flat plate section is close to each other, and it is high that other connections are installed at the second bolt hole 12 corresponding with the second side Strength bolt, anchor ear circle 10 and connection strap 30 are attached.
Length direction arrangement of each connection strap 30 along suspension rod, one end connection cable body cutting position top one of connection strap 30 The wherein side of group anchor ear circle 10, the other end of the connection strap 30 connect the same of one group of lower section of cable body cutting position anchor ear circle 10 Side.Each connection strap 30 is overlayed in the flat plate section of upper and lower two anchor ear circles the same side；The connection strap 30 offers the 3rd bolt Hole 31, it is corresponding with second bolt hole 12 in the face of flat plate section second, connection high-strength bolt is set by connection strap 30 and anchor ear circle 10 It is firmly attached.
The 3rd bolt hole 31 on each connection strap 30 lines up several columns along length of boom.On the connection strap 30 of suspension rod both sides The centre-to-centre spacing of hithermost two the 3rd bolts hole 31, preferably should be greater than 8 times of suspension rod diameter.Described centre-to-centre spacing, equal to one Most one the 3rd bolt hole 31 in inner side of side connection strap 30, between opposite side connection strap 30 most one the 3rd bolt hole 31 in inner side Distance A.The tensile bearing capacity of every connection strap 30 is preferably the 1/4 of suspension rod design Suo Li.
A kind of old suspension rod band stress cutting construction method of the applicable arch bridge of provision for disengagement described in the utility model, including it is following Step：
S1 determines the monitoring project of structure, and monitored in real time by calculating；
S2 is designed and is processed the hooping structure of provision for disengagement, is constrained installed in the both ends of cable body cutting position；
S3 to the steel wire of suspension rod symmetrically cut in batches, and suspension rod is cut into two sections.
In the step S1, further comprise following steps：
S11 establishes the FEM model that can reflect structure stress feature according to structure as-built drawing, according to the regulation of specification, According to result of finite element, checking computations structure cuts off the stress of moment, the stress change of pre- geodesic structure in suspension rod.
S12 chooses the sensitive position arrangement measuring point that failure risk be present, and wherein stress sensitive position is sensed using foil gauge Device is monitored, and displacement/deflection sensitive position is monitored using amesdial, and suspender force is monitored using vibration pickup.By all measuring points and reality When data collecting instrument be connected.
S13 is during suspension rod is cut off, the sensor reading of each measuring point of monitored over time, finds data readings and prediction case When not being inconsistent, emergent safety measure (detection of such as stopping work, but not limited to this) accordingly should be taken.
In the step S2, further comprise following steps：
S21 cut off according to suspension rod before remaining stretching force, design the hooping structure of provision for disengagement；
Hooping structure described above is processed in S22 installations；
Hooping structure is arranged on suspension rod by S23, makes suspension rod position to be cut positioned at the centre of two groups of anchor ear circles.
In the step S3, further comprise following steps：
S31 divides the cutting order of suspension rod steel wire, and it is total that the steel wire number for making to cut off every time is no more than suspension rod (before cutting) steel wire Several 1/7；And the steel wire that odd-times is cut off is set to keep symmetrical on suspension rod sectional position with the steel wire that corresponding even-times is cut off.
S32 is according to the cut coverage of setting, and convert the steel wire diameter cut every time, in the sand of the angle grinder of cutting suspension rod Marked on wheel piece, avoid cutting excessive, cause suspension rod to break suddenly.
S33 is cut by predetermined secondary ordered pair suspension rod, is cut off until by suspension rod.
Order division schematic diagram as shown in Figure 3, the respectively first time of symbol 1~9 to the 9th steel wire cut off, every time No more than total 1/7；And for example, being kept for the first time with the steel wire cut off for the second time on suspension rod sectional position symmetrically, the Keep symmetrical etc. on suspension rod sectional position with the 4th steel wire cut off three times, do not describe one by one.
In summary, the utility model can effectively reduce suspension rod and be broken in unloading process the risk of accident, it is ensured that hang Bar arch bridge changes construction safety during rope, effectively saves construction period.
Although content of the present utility model is discussed in detail by above preferred embodiment, but it should be appreciated that on The description stated is not considered as to limitation of the present utility model.After those skilled in the art have read the above, for A variety of modifications and substitutions of the present utility model all will be apparent.Therefore, the scope of protection of the utility model should be by appended Claim limit.

Claims (10)

  1. A kind of 1. old suspension rod band stress provision for disengagement of arch bridge, it is characterised in that
    At the both ends of the cable body cutting position of suspension rod, fixation is constrained by installing one group of anchor ear circle respectively；Two of each group Anchor ear circle surrounds suspension rod provided with relative segmental arc.
  2. 2. the old suspension rod band stress provision for disengagement of arch bridge as claimed in claim 1, it is characterised in that
    Each anchor ear circle is respectively equipped with flat plate section in the both sides of segmental arc, makes corresponding flat plate section on each group of two anchor ear circles tight Patch, and be fixedly connected with connector.
  3. 3. the old suspension rod band stress provision for disengagement of arch bridge as claimed in claim 2, it is characterised in that
    Each anchor ear circle is fixedly connected with least one anchor ear ribbed stiffener；
    The flat plate section of the anchor ear ribbed stiffener and anchor ear circle is perpendicular, and outward flange of the anchor ear ribbed stiffener through side flat plate section extends to The outward flange of opposite side flat plate section, the anchor ear ribbed stiffener also welds with the position contacted therewith on segmental arc and flat plate section to be connected Connect.
  4. 4. the old suspension rod band stress provision for disengagement of the arch bridge as described in Claims 2 or 3, it is characterised in that
    Between the cable body cutting position both ends anchor ear circle, by connector, with several companies arranged along length of boom direction Narrow bars are fixedly connected；
    One end of each connection strap is connected to cable body cutting position first end anchor ear circle wherein in the flat plate section of side, the connection strap The other end be connected in the flat plate section of the second end of cable body cutting position anchor ear circle the same side.
  5. 5. the old suspension rod band stress provision for disengagement of arch bridge as claimed in claim 4, it is characterised in that
    The flat plate section of each anchor ear circle both sides, by anchor ear ribbed stiffener be divided into first while and when second；Cable body cutting position two Hold the second side of the flat plate section of anchor ear circle relative, and the first side is located remotely from each other；
    Each connection strap is connected between the side of flat plate section second of described cable body cutting position both ends anchor ear circle the same side.
  6. 6. the old suspension rod band stress provision for disengagement of arch bridge as claimed in claim 5, it is characterised in that
    The flat plate section of each anchor ear circle both sides is respectively equipped with some bolts hole；Some of first spiro keyhole positions are in each flat plate section First side, high-strength bolt is connected by installing, one group of two anchor ear circles are fixedly connected；Other second spiro keyhole positions are in each Second side of flat plate section；By installing other connection high-strength bolts, anchor ear circle is fixedly connected with corresponding connection strap.
  7. 7. the old suspension rod band stress provision for disengagement of arch bridge as claimed in claim 6, it is characterised in that
    The 3rd bolt hole is offered on the connection strap, it is corresponding with the second bolt hole in anchor ear circle flat plate section；Suspension rod both sides Connection strap on hithermost two the 3rd bolts hole centre-to-centre spacing, the suspension rod diameter more than 8 times.
  8. 8. the old suspension rod band stress provision for disengagement of arch bridge as claimed in claim 4, it is characterised in that
    The tensile bearing capacity of every connection strap designs the 1/4 of Suo Li for suspension rod；
    The segmental arc internal diameter of each anchor ear circle is identical with the diameter of suspension rod；The thickness of the anchor ear circle is the 1/ of its segmental arc internal diameter 10；
    The thickness of the anchor ear ribbed stiffener is identical with the thickness of anchor ear circle.
  9. 9. the old suspension rod band stress provision for disengagement of arch bridge as claimed in claim 1, it is characterised in that
    The sensitive position of failure risk on the suspension rod be present, be disposed with the measuring point being connected with real-time data acquisition instrument signal, wrap Contain：The strain-ga(u)ge transducer of stress sensitive position is arranged on, is arranged on the amesdial of displacement/deflection sensitive position, and to hanging The vibration pickup of bar cable force monitoring.
  10. 10. the old suspension rod band stress provision for disengagement of arch bridge as claimed in claim 1, it is characterised in that
    The suspension rod includes multigroup steel wire with different cutting orders；
    The quantity of every group of steel wire, no more than 1/7 of steel wire sum in suspension rod before cutting；
    Each group of cutting order is the steel wire of odd number, the steel wire with its later group cutting order for even number, in suspension rod sectional position It is upper to keep symmetrical.
CN201720775105.3U 2017-06-29 2017-06-29 A kind of old suspension rod band stress provision for disengagement of arch bridge Active CN206859088U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720775105.3U CN206859088U (en) 2017-06-29 2017-06-29 A kind of old suspension rod band stress provision for disengagement of arch bridge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720775105.3U CN206859088U (en) 2017-06-29 2017-06-29 A kind of old suspension rod band stress provision for disengagement of arch bridge

Publications (1)

Publication Number Publication Date
CN206859088U true CN206859088U (en) 2018-01-09

Family

ID=60828885

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720775105.3U Active CN206859088U (en) 2017-06-29 2017-06-29 A kind of old suspension rod band stress provision for disengagement of arch bridge

Country Status (1)

Country Link
CN (1) CN206859088U (en)

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