CN111058388A - Suspension bridge sling replacement underpinning device - Google Patents
Suspension bridge sling replacement underpinning device Download PDFInfo
- Publication number
- CN111058388A CN111058388A CN201911294336.2A CN201911294336A CN111058388A CN 111058388 A CN111058388 A CN 111058388A CN 201911294336 A CN201911294336 A CN 201911294336A CN 111058388 A CN111058388 A CN 111058388A
- Authority
- CN
- China
- Prior art keywords
- sling
- permanent
- temporary
- hoist cable
- cable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 72
- 238000009424 underpinning Methods 0.000 title abstract description 9
- 238000001514 detection method Methods 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 16
- 238000000034 method Methods 0.000 description 11
- 238000013461 design Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/02—Suspension bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a suspension bridge sling replacing and underpinning device, belonging to the technical field of civil engineering, which comprises: the invention provides a solution for replacing a suspension bridge sling, which is convenient to construct and control, small in influence on a main cable and low in construction cost.
Description
Technical Field
The invention relates to a suspension bridge sling replacing underpinning device, and belongs to the technical field of civil engineering.
Background
The suspension bridge sling is one of the most important stressed components of a suspension bridge structure, and the dead weight of a stiffening girder, the pavement of a bridge deck, the automobile load and the like are all transmitted to a main cable through the sling. The suspension bridge sling only bears axial tension, is one of the most easily damaged and most critical stressed components in the suspension bridge components, the design life of the suspension bridge is generally more than 100 years, and the design life specification of the sling is only 20 years, so that the sling is replaced at least 4-6 times during the design life of the suspension bridge. In addition, various accidents such as collision, fire and the like can occur in the operation process of the suspension bridge, the sling of the suspension bridge is damaged, the suspension bridge needs to be replaced quickly in time, and otherwise, the structure safety of the bridge is greatly influenced.
Compared with sling installation during bridge construction, replacement of slings of a suspension bridge during service has no catwalks or hoisting equipment, the problems of traffic interruption, high-altitude operation, narrow construction surface and the like are solved, two constructions of old cable removal and new cable installation exist, and the construction process is complex. If the suspension bridge sling underpinning system is not good, the line shape and the internal force of the suspension bridge structure are easily influenced in the sling replacing construction process, so that the internal force and the line shape of the structure before and after replacement are greatly changed. Therefore, the suspension rod of the suspension bridge has the characteristics of high difficulty, complex construction process and high replacement cost.
At present, the related technical data in China are still few. Document "detection and replacement of abnormal sound wire rope short sling of large span suspension bridge" and patent 1 (CN 207685669U) disclose a device and process for replacing a short sling, the core technology is to arrange a temporary sling at one side of a permanent cable, stretch to reduce the cable force of the permanent cable to zero, and then remove the sling; the method adopts single-point replacement, and when the temporary cable tension is small, the sling to be replaced has cable force, so that the pin shaft is difficult to remove; when the temporary cable force is tensioned to the state that the cable force of the sling to be replaced is zero, the cable force of the temporary cable is very large, the lug plate of the lifting lug is already buckled and generates plastic deformation, and meanwhile, the large temporary cable force is large and is large for linear bending of the main cable and the stiffening beam.
Patent 2 (CN 202214681U) describes a sling replacing device for a suspension bridge, which is provided with a temporary cable tensioning device at one side of a sling to be replaced, and a feed-through load sensor is arranged for real-time monitoring; a temporary tensioning device is arranged on one side of the temporary sling, and the force of the sling to be replaced is reduced by tensioning, so that the problem similar to that in the patent 1 is solved.
Patent 3 (CN 106480822A) discloses a suspension bridge sling replacement system and a method for replacing suspension bridge slings, which provides a process for releasing and hanging the ropes after the old ropes are removed or before the new ropes are installed, but does not provide a construction process and a device for making the rope force of the sling to be replaced zero, and the missing part is the core and key content of the suspension bridge sling replacement. Document Shantou gulf bridge test sling replacement engineering construction and monitoring discloses a sling replacement mode for a suspension bridge. Then, the replacement of the slings is carried out in two ways: one is to lengthen the anchor bolt of the sling, set up the upper, lower supporting frame on anchor slab and anchor bolt lengthened, the middle arranges the jack, drive the jack to jack up the upper and lower supporting frames, loosen the nut of the original anchor bolt, realize changing; the other mode is that counterforce beams are arranged at the upper part and the lower part of the stiffening beam, and the internal force of the sling is unloaded by jacking the upper counterforce beam, so that the sling is replaced.
However, the invention relies on the replacement engineering of the suspension cable of the bridge, and the problem of suspension cable replacement has new situations: the construction of the steel anchor box ear plate of the bridge needing to replace the sling is different from that of other bridges, two sling holes are reserved in the steel anchor box ear plate, only one sling hole is reserved in other common bridges, a common bridge girder adopts a single-box three-chamber thin-wall fish-bellied section prestressed reinforced concrete box girder, and no sling plate is arranged; secondly, the sling forms of various bridges are different: the sling of some bridges adopts a steel wire rope, the two ends of the sling adopt pin shaft type fork-shaped ear plates, and the anchor cup is made into a vase shape; still some bridges adopt straddle type wire rope hoist cables, and the connection with stiffening beams adopts pre-buried anchor bolt formula, to sum up, the change of bridge hoist cables among this technical scheme can't be accomplished to current technical means.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a solution which is convenient to construct, convenient to construct and control, small in influence on a main cable and low in construction cost.
In order to achieve the purpose, the invention adopts the following technical scheme:
a sling replacing device for a suspension bridge comprises a sling cable clamp fixedly arranged on a sling cable of the suspension bridge, a box girder ear plate fixed on the suspension bridge, a permanent sling arranged between the sling cable clamp and the box girder ear plate and used for connecting the sling cable clamp and the box girder ear plate, temporary sling connecting devices arranged at two sides of the permanent sling and respectively connected with the sling cable clamp and the box girder ear plate, a permanent sling carrying pole beam arranged on a permanent sling anchor cup, a counter-force beam arranged above the permanent sling carrying pole beam, a permanent sling force application device arranged between the permanent sling carrying pole beam and the counter-force beam, a temporary sling force application device arranged between the counter-force beam and the temporary sling connecting devices, and a force application detection device used for detecting the force application magnitude of the permanent sling force application device and the force application magnitude of the temporary sling force application device, wherein the sling cable clamp comprises a permanent sling cable clamp in the middle and temporary sling cable clamps arranged at two ends of the permanent sling cable clamp, the permanent sling is connected with the permanent sling cable clamp, and the temporary sling connecting device is connected with the temporary sling cable clamp.
Furthermore, the sling cable clamp comprises an upper cable clamp and a lower cable clamp which are oppositely opened and are inwards concaved into a semicircle, and a cable clamp fork lug plate is arranged below the lower cable clamp.
Further, interim hoist cable connecting device includes interim hoist cable, sets up interim hoist cable stretch-draw anchor cup, the card of interim hoist cable lower extreme establishes interim hoist cable fork ear seat on case roof beam otic placode, sets up the interim hoist cable stretch-draw screw rod that is used for connecting between interim hoist cable stretch-draw anchor cup and interim hoist cable fork ear seat between them, interim hoist cable fork ear seat is connected with case roof beam otic placode through round pin axle, interim hoist cable top is through the cable clamp fork otic placode fixed connection on round pin axle and the interim hoist cable clip.
Further, the temporary sling forcing device includes: the temporary sling jack is a straight-through jack and is sleeved on the periphery of the temporary sling tensioning screw; the top of the temporary sling tensioning screw rod is fixed to the upper portion of the counter-force beam through a temporary sling upper end nut, and the lower portion of the temporary sling tensioning screw rod is fixed to the lower portion of the temporary sling fork lug seat through a temporary sling lower end nut.
Further, the permanent sling force application device comprises a permanent sling jack and a permanent sling pushing screw which are sequentially arranged above the permanent sling carrying pole beam, the top of the permanent sling pushing screw is in threaded connection with a permanent sling pushing screw upper end nut, the lower end of the permanent sling pushing screw is in threaded connection with a permanent sling pushing screw lower end nut, and the top of the permanent sling pushing screw upper end nut abuts against the lower end face of the counter-force beam.
Further, application of force detection device establishes the interim hoist cable anchor rope meter on interim hoist cable stretch-draw screw including the cover, sets up permanent hoist cable anchor rope meter between permanent hoist cable top pushing screw lower extreme nut and permanent hoist cable jack and the data detection equipment who is connected in both electricity respectively, data detection equipment can detect and show the numerical value of interim hoist cable anchor rope meter and permanent hoist cable anchor rope meter often.
Further, interim hoist cable anchor meter upper end is equipped with interim hoist cable stretch-draw screw middle-end nut and interim hoist cable stretch-draw screw threaded connection, interim hoist cable force application device still includes interim hoist cable spike, interim hoist cable spike cover is established in interim hoist cable anchor meter and the interim hoist cable stretch-draw screw middle-end nut outside, interim hoist cable spike sets up at interim hoist cable jack lower extreme.
Furthermore, the permanent sling carrying pole beam is formed by connecting two symmetrically arranged supporting beams with concave centers, the permanent sling is clamped in the permanent sling, and the permanent sling push rods are divided into two parallel permanent slings at two sides.
Furthermore, the reaction beam is provided with a transverse stiffening plate at a position corresponding to the top of the permanent sling pushing screw.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention combines the characteristic that two lifting lug holes are reserved on the lifting lug anchor plate of the construction bridge, and can adapt to the sling replacement of the suspension bridge with different sling lengths, different sling intervals and the lifting lug anchor plate with two lifting lug holes reserved;
2. the arrangement of the temporary sling leads the safety of the sling to be 1.5 to 2 times higher than that of the original structure all the time in the replacement process of the sling;
3. the temporary sling tensioning force only needs to be tensioned to the design cable force of a permanent cable, the influence on a steel box girder and a main cable of a suspension bridge is small, the concept that the original sling cable force is reduced to zero in many sling replacement engineering designs is changed, and a replacement technology that the sling to be replaced holds the load and the pin shaft stress is reduced to zero by pushing an anchor cup is provided;
4. compared with the traditional cable replacement device, the cable replacement device has the advantages that the cable force is monitored by using the anchor cable meter during construction, the construction precision is improved, and the construction is conveniently monitored;
5. the invention has small linear influence on the main beam, so that the overlength sling close to the main tower can be replaced, and the application range is wide.
Drawings
Fig. 1 is a schematic perspective view of a suspension bridge cable replacement underpinning device according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a permanent sling forcing device of a replacement device for a sling of a suspension bridge according to an embodiment of the present invention;
FIG. 3 is a schematic view of a temporary sling forcing device of a replacement device for a sling of a suspension bridge according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a temporary sling force application device of a suspension bridge sling replacement underpinning device according to an embodiment of the present invention;
FIG. 5 is a schematic perspective view of a cable lock clip of a cable replacement underpinning apparatus for a suspension bridge according to an embodiment of the present invention;
fig. 6 is a schematic perspective view of a temporary supporting leg of a suspension bridge sling replacement underpinning device and an internal three-dimensional structure thereof according to an embodiment of the present invention.
Description of reference numerals: 1-sling rope clip, 2-box beam ear plate, 3-permanent sling rope, 4-temporary sling rope connecting device, 5-permanent sling rope carrying pole beam, 6-counterforce beam, 7-permanent sling rope force application device, 8-temporary sling rope force application device, 10-upper sling clip, 11-lower sling clip, 12-rope clip fork ear plate, 13-temporary sling rope, 14-temporary sling rope tensioning anchor cup, 15-temporary sling rope fork ear seat, 16-temporary sling rope tensioning screw, 17-pin shaft, 18-temporary sling rope jack, 19-temporary sling rope upper end nut, 20-temporary sling rope lower end nut, 21-permanent sling rope jack, 22-sling rope permanent jacking screw, 23-permanent sling rope jacking screw upper end nut, 24-sling rope permanent jacking screw lower end nut, 25-temporary sling cable anchor meter, 26-permanent sling cable anchor meter, 27-nut at the middle end of a temporary sling tensioning screw, 28-temporary sling supporting foot, 29-stiffening plate, 30-permanent sling cable clamp and 31-temporary sling cable clamp.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The device for replacing the suspension cable of the suspension bridge as shown in the attached drawing comprises a suspension cable clamp 1 fixedly arranged on the suspension bridge cable, a box girder ear plate 2 fixed on the suspension bridge, a permanent suspension cable 3 arranged between the suspension cable clamp 1 and the box girder ear plate 2 and used for connecting the suspension cable clamp 1 and the box girder ear plate 2, temporary suspension cable connecting devices 4 arranged at two sides of the permanent suspension cable 3 and respectively connected with the suspension cable clamp 1 and the box girder ear plate 2, a permanent suspension cable carrying pole beam 5 arranged on a permanent suspension cable anchor cup, a counterforce beam 6 arranged above the permanent suspension cable carrying pole beam 5, a permanent suspension cable force application device 7 arranged between the permanent suspension cable carrying pole beam 5 and the counterforce beam, a temporary suspension cable force application device 8 arranged between the counterforce beam and the temporary suspension cable connecting device 4 and a force application detection device 9 used for detecting the force application size of the permanent suspension cable force application device 7 and the force application size of the temporary suspension cable force, the sling cable clamp comprises a permanent sling cable clamp 30 in the middle and temporary sling cable clamps 31 arranged at two ends of the permanent sling cable clamp, the permanent sling 3 is connected with the permanent sling cable clamp 30, and the temporary sling connecting device 4 is connected with the temporary sling cable clamps 31;
the permanent sling 3 is a tension support part of the suspension bridge, and the temporary sling is temporarily arranged beside the permanent sling 3 to replace the stress of the permanent sling 3; the counter-force roof beam is used for supporting permanent hoist cable 3 of push-and-pull and interim hoist cable with permanent hoist cable carrying pole roof beam 5, and force application device is used for the adjustment to change the atress of permanent hoist cable 3 and interim hoist cable, and force application detection device is used for detecting the atress of permanent hoist cable 3 and interim hoist cable, conveniently adjusts the atress to predetermined size, and permanent hoist cable clamp 30 is permanent to be set up on the suspension bridge, and interim hoist cable clamp 31 is demolishd after the hoist cable is changed the operation completion.
Further, the sling cable clamp 1 comprises an upper cable clamp 10 and a lower cable clamp 11 which are split and concavely concaved into a semicircle, and a cable clamp fork ear plate 12 is arranged below the lower cable clamp;
the split design is convenient for disassembly and assembly, the rope clamping fork ear plate 12 is convenient for being connected and disassembled with the temporary sling 13 and the permanent sling 3, and a plurality of through holes for connection are arranged on the rope clamping fork ear plate 12 so that the pin shaft 17 can be conveniently penetrated and arranged.
Further, the temporary sling connecting device 4 comprises a temporary sling 13, a temporary sling tensioning anchor cup 14 arranged at the lower end of the temporary sling 13, a temporary sling fork ear seat 15 clamped on the box girder ear plate 2, and a temporary sling tensioning screw 16 arranged between the temporary sling tensioning anchor cup 14 and the temporary sling fork ear seat 15 and used for connecting the temporary sling tensioning anchor cup and the temporary sling fork ear seat, wherein the temporary sling fork ear seat 15 is connected with the box girder ear plate 2 through a pin 17, and the top of the temporary sling is fixedly connected with a sling fork ear plate 12 on a temporary sling cable clamp 31 through the pin 17;
the temporary sling fork lug seat 15 is clamped on the box girder lug plate 2 and can be quickly connected and fixed through a pin shaft 17, and the temporary sling tensioning screw 16 can conveniently adjust the tensioning force between the temporary sling and the box girder lug plate 2 and maintain the fixation.
In one embodiment, the temporary sling forcing device 8 comprises: the temporary sling jacks 18 are straight-through jacks which are sleeved outside the temporary sling tensioning screw rods 16; the top of the temporary sling tensioning screw rod 16 penetrates above the counter-force beam and is fixed through a temporary sling upper end nut 19, and the lower part of the temporary sling tensioning screw rod 16 penetrates below the temporary sling fork lug seat 15 and is fixed through a temporary sling lower end nut 20;
the temporary sling jacks 18 are used for adjusting the stress of temporary slings, the temporary sling upper end nuts 19 are used for connecting fixed counter-force beams, and the temporary sling lower end nuts 20 are used for connecting the box girder ear plates 2.
In one embodiment, the permanent sling force application device 7 comprises a permanent sling jack 21 and a permanent sling pushing screw 22 which are sequentially arranged above a permanent sling carrying pole beam 5, wherein the top of the permanent sling pushing screw 22 is in threaded connection with a permanent sling pushing screw upper end nut 23, the lower end of the permanent sling pushing screw 22 is in threaded connection with a permanent sling pushing screw lower end nut 24, and the top of the permanent sling pushing screw upper end nut 23 abuts against the lower end face of the counter-force beam;
the permanent sling jack 21 is used for adjusting the stress between the counterforce beam and the permanent sling carrying pole beam 5, and the pushing screw is used for fixing and maintaining the stress to a specified value; the nut 23 at the upper end of the permanent sling pushing screw is used for increasing the stress area and preventing the local stress of the counter-force beam from being too concentrated to damage the structural strength.
In one embodiment, the force application detection device comprises a temporary sling anchor cable meter 25 sleeved on the temporary sling tensioning screw 16, a permanent sling anchor cable meter 26 arranged between a permanent sling pushing screw lower end nut 24 and a permanent sling jack 21, and data detection equipment electrically connected with the temporary sling anchor cable meter 25 and the permanent sling anchor cable meter 26 respectively, wherein the data detection equipment can detect and display the numerical values of the temporary sling anchor cable meter 25 and the permanent sling anchor cable meter 26 at any time;
temporary sling anchor rope meter 25 is used for monitoring whether stretch-draw suitable cable force during temporary sling jack 18 work, and permanent sling anchor rope meter 26 is used for monitoring whether permanent sling jack 21 pushes away suitable cable force, and data monitoring equipment can monitor often and show numerical value and make things convenient for personnel to adjust, acquires operating condition, and convenient control has optimized the construction flow.
Furthermore, a temporary sling tensioning screw middle nut 27 is arranged at the upper end of the temporary sling anchor cable meter 25 and is in threaded connection with the temporary sling tensioning screw 16, the temporary sling force application device 8 further comprises a temporary sling supporting foot 28, the temporary sling supporting foot 28 is sleeved outside the temporary sling anchor cable meter 25 and the temporary sling tensioning screw middle nut 27, and the temporary sling supporting foot 28 is arranged at the lower end of the temporary sling jack 18;
temporary sling cable anchor meter 25 top sets up temporary sling tensioning screw middle-end nut 27 and is used for maintaining fixed 18 stretch-draw cable forces of temporary sling jack, and temporary sling spike 28 is used for fixing and protecting temporary sling anchor meter 25 and temporary sling tensioning screw middle-end nut 27, and the thru hole has been seted up to temporary sling spike both sides, makes things convenient for anchor meter circuit to wear to establish and the rotation adjustment of temporary sling tensioning screw middle-end nut.
In one embodiment, the permanent sling carrying pole beam 5 is formed by connecting two symmetrically arranged supporting beams with concave centers, the permanent sling 3 is clamped in the permanent sling, and two push rods of the permanent sling 3 are parallelly arranged on two sides of the permanent sling 3;
the split design is convenient to disassemble and assemble and can be used for multiple times.
In one embodiment, the reaction beam is provided with a transverse stiffening plate 29 at a position corresponding to the top of the permanent sling pushing screw 22;
the stiffening plate 29 can improve the structural strength of the reaction beam and ensure the normal operation of the whole device.
The temporary sling and the temporary sling tensioning screw 16 play a role in unloading the permanent sling 3 to bear tensioning force on one hand, and also play a role in protecting the replacement of the sling of the suspension bridge on the other hand, and the cable force of the temporary sling only needs to be tensioned to a specified design cable force.
The permanent sling 3 in the device is replaced under the condition that the permanent sling 3 has a cable force, the permanent sling jack 21 pushes to transfer the cable force of the permanent sling to the counter-force beam, and the permanent sling to be replaced is removed when the stress of the permanent sling pin shaft 17 connected with the permanent sling is zero.
When the temporary sling jack 18 works, the transmission process of the base force of the temporary sling jack 18 is as follows: the temporary sling jack 18 → the temporary sling brace 28 → the temporary sling tensioning anchor cup 14 → the temporary sling 13 → the temporary sling cable clamp 31; the transfer process of the force at the upper end of the temporary hoist cable jack 18 is as follows: the temporary sling jack 18 → the temporary sling upper end nut 19 → the temporary sling tensioning screw 16 → the temporary sling fork lug seat 15 → the pin 17 → the steel box girder lug plate 2.
When the permanent sling jack 21 works, the transmission process of the base force of the permanent sling jack 21 is as follows: permanent sling jacks 21 → permanent sling carrying pole beams 5 → permanent slings 3 to be replaced; the force transmission path at the bottom end of the permanent sling jack 21 is: the permanent sling jack 21 → the permanent sling anchor rope meter 26 → the permanent sling push screw lower end nut 24 → the permanent sling push screw 22 → the permanent sling push screw upper end nut 23 → the reaction beam → the temporary sling upper end nut 19 → the temporary sling tension screw 16 → the temporary sling fork lug seat 15 → the pin 17 → the box girder lug plate 2.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (9)
1. The utility model provides a device is changed to suspension bridge hoist cable which characterized in that: comprises a sling rope clamp (1) arranged on a sling rope of a suspension bridge, a box girder ear plate (2) fixed on the suspension bridge, a permanent sling (3) arranged between the sling rope clamp and the box girder ear plate and used for connecting the sling rope clamp and the box girder ear plate, temporary sling connecting devices (4) arranged at two sides of the permanent sling and respectively connected with the sling rope clamp and the box girder ear plate, a permanent sling carrying pole beam (5) arranged on a permanent sling anchor cup, a counter-force beam (6) arranged above the permanent sling carrying pole beam, a permanent sling force application device (7) arranged between the permanent sling carrying pole beam and the counter-force beam, a temporary sling force application device (8) arranged between the counter-force beam and the temporary sling connecting devices, and a force application detection device used for detecting the force application size of the permanent sling force application device and the temporary sling force application device, wherein the sling rope clamp comprises a permanent sling rope clamp (30) in the middle and temporary sling rope clamps (31) arranged at two ends of the permanent sling rope clamp, the permanent sling is connected with the permanent sling cable clamp, and the temporary sling connecting device is connected with the temporary sling cable clamp.
2. A suspension bridge fall replacement device according to claim 1, wherein: the sling cable clamp comprises an upper cable clamp (10) and a lower cable clamp (11) which are split and concavely recessed into a semicircle, and a cable clamp fork lug plate (12) is arranged below the lower cable clamp.
3. A suspension bridge fall replacement device according to claim 2, wherein: temporary sling connecting device includes interim hoist cable (13), sets up at interim hoist cable stretch-draw anchor cup (14) of interim hoist cable lower extreme, the card establishes interim hoist cable fork ear seat (15) on case roof beam otic placode, sets up be used for connecting interim hoist cable stretch-draw screw (16) between interim hoist cable stretch-draw anchor cup and interim hoist cable fork ear seat between both, interim hoist cable fork ear seat is connected with case roof beam otic placode through round pin axle (17), interim hoist cable top is through the cable clamp fork otic placode fixed connection on round pin axle and the interim hoist cable clamp.
4. A suspension bridge fall replacement device according to claim 3, wherein: the temporary sling force application device comprises: the temporary sling jack (18) is a straight-through jack and is sleeved on the periphery of the temporary sling tensioning screw; the top of the temporary sling tensioning screw rod is fixed to the upper portion of the counter-force beam through a temporary sling upper end nut (19), and the lower portion of the temporary sling tensioning screw rod is fixed to the lower portion of the temporary sling fork lug seat through a temporary sling lower end nut (20).
5. A suspension bridge fall replacement device according to claim 1, wherein: the permanent sling force application device comprises a permanent sling jack (21) and a permanent sling pushing screw (22) which are sequentially arranged above a permanent sling carrying pole beam, wherein the top of the permanent sling pushing screw is in threaded connection with a permanent sling pushing screw upper end nut (23), the lower end of the permanent sling pushing screw is in threaded connection with a permanent sling pushing screw lower end nut (24), and the top of the permanent sling pushing screw upper end nut is abutted against the lower end face of the counter-force beam.
6. A suspension bridge fall replacement device according to claim 1, wherein: the application of force detection device establishes interim hoist cable anchor rope meter (25), permanent hoist cable anchor rope meter (26) and the data detection equipment who is connected in both electricity between permanent hoist cable top pushing screw lower extreme nut and permanent hoist cable jack including the cover on interim hoist cable stretch-draw screw, the data detection equipment can detect and show interim hoist cable anchor rope meter and permanent hoist cable anchor rope meter's numerical value often.
7. A suspension bridge fall replacement device according to claim 1, wherein: temporary sling anchor rope meter upper end is equipped with interim hoist cable stretch-draw screw middle-end nut (27) and temporary hoist cable stretch-draw screw threaded connection, interim hoist cable force application device still includes interim hoist cable spike (28), the cover of interim hoist cable spike is established in the interim hoist cable anchor rope meter and the interim hoist cable stretch-draw screw middle-end nut outside, interim hoist cable spike sets up at interim hoist cable jack lower extreme.
8. A suspension bridge fall replacement device according to claim 1, wherein: the permanent sling carrying pole beam is formed by connecting two symmetrically arranged supporting beams with concave middles, the permanent sling is clamped in the permanent sling, and the permanent sling push rods are arranged on two sides of the permanent sling in parallel.
9. A suspension bridge fall replacement device according to claim 1, wherein: and the counter-force beam is provided with a transverse stiffening plate (29) at a position corresponding to the top of the permanent sling pushing screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911294336.2A CN111058388A (en) | 2019-12-16 | 2019-12-16 | Suspension bridge sling replacement underpinning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911294336.2A CN111058388A (en) | 2019-12-16 | 2019-12-16 | Suspension bridge sling replacement underpinning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111058388A true CN111058388A (en) | 2020-04-24 |
Family
ID=70301946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911294336.2A Pending CN111058388A (en) | 2019-12-16 | 2019-12-16 | Suspension bridge sling replacement underpinning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111058388A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114150891A (en) * | 2021-12-30 | 2022-03-08 | 柳州欧维姆工程有限公司 | Inhaul cable replacing method for space cable net supporting structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102286943A (en) * | 2011-08-23 | 2011-12-21 | 河海大学 | Suspension bridge sling replacing device |
| CN109537476A (en) * | 2018-12-10 | 2019-03-29 | 河海大学 | The double interim rope self-balancings of pin ear formula pull formula suspension bridge sling replacing underpinning device |
| CN209584873U (en) * | 2018-12-10 | 2019-11-05 | 河海大学 | The double interim rope self-balancing push mode suspension bridge sling replacing underpinning devices of straddle-type |
| CN212077663U (en) * | 2019-12-16 | 2020-12-04 | 河海大学 | Suspension bridge sling replacement underpinning device |
-
2019
- 2019-12-16 CN CN201911294336.2A patent/CN111058388A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102286943A (en) * | 2011-08-23 | 2011-12-21 | 河海大学 | Suspension bridge sling replacing device |
| CN109537476A (en) * | 2018-12-10 | 2019-03-29 | 河海大学 | The double interim rope self-balancings of pin ear formula pull formula suspension bridge sling replacing underpinning device |
| CN209584873U (en) * | 2018-12-10 | 2019-11-05 | 河海大学 | The double interim rope self-balancing push mode suspension bridge sling replacing underpinning devices of straddle-type |
| CN212077663U (en) * | 2019-12-16 | 2020-12-04 | 河海大学 | Suspension bridge sling replacement underpinning device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114150891A (en) * | 2021-12-30 | 2022-03-08 | 柳州欧维姆工程有限公司 | Inhaul cable replacing method for space cable net supporting structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109487709B (en) | One-side riding type temporary rope self-balancing pushing type suspension bridge sling replacement underpinning device | |
| CN109537476B (en) | Pin lug type double-temporary-rope self-balancing pulling type suspension bridge sling replacement underpinning device | |
| CN212077663U (en) | Suspension bridge sling replacement underpinning device | |
| CN212432397U (en) | Steel structure bridge steel arch rib vertical cable stress adjustment testing device | |
| CN111058388A (en) | Suspension bridge sling replacement underpinning device | |
| CN113215992B (en) | Assembling control method for sling tower frame for construction of steel truss arch bridge by inclined pulling buckling hanging method | |
| CN116556587A (en) | Inclined hanging steel structure and installation method thereof | |
| CN203639831U (en) | Special lifting apparatus for quickly hoisting steel trussed beam rod piece | |
| CN211447731U (en) | Upper hanging piece for attached lifting scaffold | |
| CN101459320B (en) | Large span cable bridge rack installation mold and installation method thereof | |
| CN221093513U (en) | Cantilever crane device for bridge construction hanging basket | |
| CN108442230B (en) | Arch bridge suspender structure | |
| CN114197313B (en) | Intelligent monitoring device for construction safety of tower for hoisting river-crossing arch bridge | |
| US20090260919A1 (en) | Safety line anchor | |
| CN112499473A (en) | Supporting and hanging device for installation and maintenance of electric hoist equipment and using method thereof | |
| CN219637731U (en) | Boom arch bridge reinforced structure | |
| CN103556574A (en) | Lifting device special for rapidly lifting steel truss girder rod piece and using method | |
| CN109610351B (en) | Method for treating axial lead of steel box girder suspension bridge | |
| CN217053098U (en) | Steel strand wires safety unloading frame | |
| CN220318342U (en) | Bridge anti-overturning structure | |
| CN115110440A (en) | Rapid replacement and detection system for suspension cable of suspension bridge | |
| CN115321336B (en) | Construction method for integrally hoisting vertical main bars and constructional steel bars of mountain area ultrahigh cable tower based on composite lifting appliance | |
| CN216108120U (en) | Portable bridge tensioning equipment mounting and dismounting device | |
| CN218002489U (en) | Road and bridge prestressing force displacement detection device | |
| CN213235944U (en) | Stainless steel wire rope's double-end rigging structure convenient to joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |