CN210163781U - Stay cable beam end sealing structure - Google Patents
Stay cable beam end sealing structure Download PDFInfo
- Publication number
- CN210163781U CN210163781U CN201920385330.5U CN201920385330U CN210163781U CN 210163781 U CN210163781 U CN 210163781U CN 201920385330 U CN201920385330 U CN 201920385330U CN 210163781 U CN210163781 U CN 210163781U
- Authority
- CN
- China
- Prior art keywords
- pipe
- stay cable
- embedded pipe
- buckler
- sealing structure
- 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.)
- Active
Links
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model relates to a suspension cable beam-ends seal structure, including beam-ends ground tackle, beam-ends embedded pipe, buckler and protecting tube, beam-ends ground tackle sets up inside the beam-ends embedded pipe, the buckler sets up the mouth of pipe at beam-ends embedded pipe, the beam-ends steel wire bundle of suspension cable expandes the branch silk anchor in beam-ends ground tackle, the suspension cable passes beam-ends embedded pipe in proper order, the buckler stretches into in the protecting tube, still be provided with the connector between buckler and the outer tube, beam-ends embedded pipe is inside to be provided with the protecting tube, the suspension cable passes from the protecting tube is inside, the protecting tube directly communicates the outer tube through the connector, annular gap and the inside mutual isolation of protecting tube between sheath outer wall and the beam-ends embedded pipe inner wall. The steel wire bundles in the embedded pipe are isolated in the embedded pipe through the protective sleeve, so that even if water or accumulated water enters the embedded pipe, the steel wires or steel strands in the anchorage device can be effectively protected from being corroded, and the sealing aging is long.
Description
Technical Field
The utility model belongs to the technical field of bridge or building suspension cable structure, concretely relates to beam-ends seal structure of suspension cable.
Background
The cable support type bridge develops rapidly, and particularly the number of the cable-stayed bridges and the arch bridges is increased fastest. In cable-stayed bridge and arch bridge structures, a stay cable is the most critical stressed member, the durability of the stay cable directly influences the service life and the operation safety of the whole bridge. Because the guy cable is generally arranged outside the beam body and is in a high stress state for a long time, the guy cable is easy to corrode under the action of temperature, humidity and aggressive media, and therefore the guy cable must be well protected from corrosion.
The steel strand stay cable generally comprises a steel strand bundle consisting of a plurality of parallel steel strands, a sheath pipe sleeved outside the steel strand bundle, and anchors (beam end anchoring and tower end anchoring) for anchoring the two ends of the steel strand bundle, as shown in fig. 1. In order to realize the purpose that a single steel strand can be replaced, each steel strand parallelly and independently penetrates through a wire separating plate and an anchor plate taper hole which are arranged on an anchorage device sealing cylinder in sequence and is anchored in the anchor plate taper hole by a clamping piece independently. In order to prevent moisture and corrosive media from entering the interior of the anchorage device along the gap between the steel strand and the strand separating plate to corrode the steel strand, a sealing device is generally arranged between the strand separating plates in the sealing cylinder, and an anticorrosive material is poured into the sealing cylinder after the stay cable is tensioned and adjusted.
In the operation process of the stay cable, the stay cable is in a high stress state for a long time, and under the combined action of environment and vibration, the sealing device can lose efficacy, so that moisture and corrosive media enter the anchorage device along the gap between the steel strand and the sealing device, the steel strand is corroded, and the service life of the stay cable is influenced. Particularly, at the beam end, the vibration causes the sealing connection among the embedded pipe, the waterproof cover and the outer sleeve to be loosened, a gap is generated, moisture can possibly enter the beam end embedded pipe, if the embedded pipe is not smooth in drainage, the anchorage device can be in a wet environment for a long time, the anchorage device structure and the steel strand are corroded, and the service life of the stay cable is shortened. Meanwhile, the service conditions of the stay cable and the anchorage device which are positioned in the beam end embedded pipe are difficult to inspect and maintain, so that the beam end structure of the stay cable is necessary to be improved, accumulated water in the embedded pipe is timely discharged, the corrosion of the steel strand caused by the fact that moisture enters the anchorage device is avoided, the service life of the stay cable is prolonged, and the safety of the bridge is ensured.
Notice No. CN103741600B discloses a suspension cable beam-ends waterproof cap, and this waterproof cap sets up the transition position at buckler and cable body, and waterproof cap and cable body are provided with twice sealing washer, and the coincidence position of buckler and buckler is provided with the sealing washer, increases sealed effect through three sealing washer unwrapping wires. The structure is simple, the effect in a short time is obvious, the sealing can be failed due to the influence of vibration for a long time, and the maintenance period is short.
The publication number CN103174092B discloses a cable structure capable of being filled with dry air and a method for implementing the same, wherein the dry air is filled into a cable body to discharge the moisture in the cable body. The defects of complex structure and high maintenance cost exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned prior art and provide a novel stay cable beam-ends seal structure, the further isolated stay cable body improves beam-ends stay cable seal structure's sealing performance, easy to assemble.
The utility model provides a technical scheme that above-mentioned problem adopted does: the utility model provides a suspension cable beam-ends seal structure, includes beam-ends ground tackle, beam-ends embedded pipe, buckler and protecting pipe, beam-ends ground tackle sets up inside the beam-ends embedded pipe, and the buckler sets up the mouth of pipe at beam-ends embedded pipe, and the beam-ends steel wire bundle of suspension cable expandes the branch silk anchor in beam-ends ground tackle, and it is intraductal that the suspension cable passes beam-ends embedded pipe, buckler in proper order and stretches into the protecting pipe, still be provided with the connector between buckler and the outer tube, beam-ends embedded pipe is inside to be provided with the protecting pipe, and the suspension cable passes from protecting inside the pipe, and the protecting pipe directly communicates the outer tube through the connector, and annular gap and the inside mutual isolation of protecting pipe between sheath outside wall of tubes and the beam-.
Preferably, the lower end of the sheath pipe is in sealing connection with the beam-end anchorage.
Preferably, the protective sleeve and the beam end anchorage form a thread pair, and a sealing ring is arranged at the deep connecting part of the thread pair.
Preferably, the sheath pipe and the beam end anchorage constitute a flange pair, and a sealing gasket is arranged at the joint of the flange pair.
Furthermore, the connector is provided with an upper end pipe and a lower end pipe, the upper end pipe is connected with the outer sleeve, the lower end pipe is connected with the waterproof cover, the inner peripheral wall of the lower end pipe is formed into an annular spigot, the central axes of the annular spigot, the upper end pipe and the lower end pipe are overlapped, and the upper end of the protective sleeve pipe freely extends into the annular spigot.
Preferably, the upper end pipe and the outer sleeve form a thread pair, a step is formed on the outer wall of the upper end pipe, and the step of the upper end pipe abuts against the end face of the outer sleeve after the upper end pipe and the outer sleeve are screwed in place.
Preferably, the lower end pipe and the waterproof cover form a thread pair, a step is formed on the inner pipe wall of the lower end pipe, and the step of the lower end pipe abuts against the end face of the waterproof cover after the lower end pipe and the waterproof cover are screwed in place.
Preferably, the inner wall diameter of annular tang is less than the inner wall diameter of protecting pipe, the outer wall diameter of annular tang is greater than the outer wall diameter of protecting pipe, and the upper end of protecting pipe stretches into in the annular tang to can freely the axial is flexible. When the protective sleeve is subjected to vibration or thermal expansion and thermal shrinkage, the free end of the protective sleeve can freely stretch out and draw back in the annular seam allowance, so that the self stress of the protective sleeve is prevented from increasing, and the sealing structure is prevented from losing efficacy.
The reasonable arrangement is that the protective sleeve is formed by splicing a plurality of protective sleeve units with more than two sections. For example, when the built-in shock absorber needs to be installed on the cable body, the two protecting sleeve units are spliced, so that the installation at the end part of one protecting sleeve unit is very convenient.
Preferably, the sealing connection between the adjacent sheath tube units is as follows: the adjacent sheath pipe units form a thread pair, and a sealing ring is arranged at the connecting deep part of the thread pair; or adjacent sheath pipe units form a flange pair, and a sealing gasket is arranged at the joint of the flange pair.
Compared with the prior art, the utility model has the advantages of: the utility model discloses a set up the protecting pipe in pre-buried intraductal, keep apart in the steel strand constitution of beam-ends suspension cable through the protecting pipe, even intake or ponding in the pre-buried pipe, also can prevent that moisture from getting into inside the ground tackle along the clearance between ground tackle and the steel strand wires to keep apart moisture and the steel strand wires in the protecting ground tackle inside, the steel wire or the steel strand wires of protection ground tackle are avoided corroding.
The connector that this application set up guarantees under the prerequisite of sealing connection, does not have rigid connection with the protecting pipe, and the protecting pipe has certain range's activity space, has avoided the protecting pipe to produce stress fluctuation to avoided leading to the seal structure inefficacy of protecting pipe and beam-ends ground tackle because of stress fluctuation. The aging of the beam end sealing structure is prolonged.
In addition, because protecting pipe and embedded pipe, buckler wear the structure of cover inside and outside, the connector of this application design also is convenient for install and dismantle with the cooperation relation of protecting pipe and buckler.
Drawings
FIG. 1 is a schematic view of a beam-end sealing structure of a conventional steel strand stay cable;
fig. 2 is a schematic view of a beam-end sealing structure of a steel strand stay cable with a built-in damper according to an embodiment of the present invention;
fig. 3 is a schematic view of a beam-end sealing structure of a steel strand stay cable without a built-in damper according to an embodiment of the present invention;
FIG. 4 is a schematic view of a threaded connection between the lower end of a sheath tube I and an anchorage device according to an embodiment of the present invention;
FIG. 5 is a schematic view of a flange connection between the lower end of a sheath pipe I and an anchorage device according to an embodiment of the present invention;
fig. 6 is a schematic view of a threaded connection between a sheath tube i and a sheath tube ii according to an embodiment of the present invention;
fig. 7 is a schematic view of a flange connection between the upper end of a sheath tube i and the lower end of a sheath tube ii in an embodiment of the present invention;
fig. 8 is a schematic view of the connection of the waterproof case, the sheath tube, the connector and the outer sleeve according to the present invention.
Fig. 9 is a schematic view of the structure of the connector.
In the figure: 1-beam end anchorage, 2-beam end embedded pipe, 3-protecting sleeve I, 4-protecting sleeve II, 5-steel wire bundle, 6-built-in vibration damper, 7-waterproof cover, 8-connector and 9-outer sleeve; 31-a thread pair, 32-a sealing ring, 33-a flange pair, 34-a sealing gasket and 35-a bolt component; 41-thread pair, 42-sealing ring, 43-flange pair, 44-sealing gasket, 45-bolt assembly; 81-lower end pipe, 82-annular spigot and 83-lower end pipe.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
Example one
As shown in figure 2, the steel strand stay cable beam end sealing structure capable of preventing moisture from entering an anchorage comprises a beam end anchorage 1, a beam end embedded pipe 2, a protective sleeve I3, a protective sleeve II 4, a steel strand bundle 5, a built-in shock absorber 6, a waterproof cover 7, a connector 8 and an outer sleeve 9. Beam-ends ground tackle 1 sets up inside beam-ends embedded pipe 2, and buckler 7 sets up the mouth of pipe at beam-ends embedded pipe 2, and connector 8 sets up in the upper end of buckler 7, and connector 8 and outer tube 9 sealing connection, protective casing I3, protective casing II 4 concatenation setting are inside beam-ends embedded pipe. The beam end steel wire bundle of the stay cable is unfolded and divided and anchored in the beam end anchorage device 1, and the stay cable body sequentially penetrates through the protective sleeve I3, the protective sleeve II 4, the waterproof cover 7 and the connector 8 and extends into the protective sleeve 9.
The lower extreme of protecting pipe I3 and the front end sealing connection of ground tackle 1, the lower extreme of protecting pipe II 4 and the upper end of protecting pipe I3 are connected, and the upper end of protecting pipe II 4 is free to freely stretch into in the hoop tang 82 of connector 8 inner wall, as shown in fig. 2 and 8. The built-in vibration absorber 6 is arranged between the protective sleeve II 4 outside the steel wire bundle 5 and the embedded pipe 2. The large end of the waterproof cover 7 is sleeved on the embedded pipe 2. The connector 8 is connected at both ends with the waterproof cover 7 and the outer sleeve 9, respectively.
The inner diameter of the protective sleeve I3 is larger than the outer diameter of the steel strand bundle 5 and smaller than the inner diameter of the beam-end embedded pipe 2.
The inner diameter of the protective sleeve II 4 is larger than the outer diameter of the protective sleeve I3 and smaller than the inner diameter of the beam-end embedded pipe 2.
The upper end of protecting pipe I3 does not expose pre-buried pipe 2, and is apart from the orificial distance of pre-buried 50-500 mm.
The inner diameter of the large end of the waterproof cover 7 is larger than the outer diameter of the embedded pipe 2, and the waterproof cover is sleeved on the embedded pipe 2; the inner diameter of the small end of the waterproof cover 7 is slightly larger than the outer diameter of the protective sleeve II 4; the small end of the waterproof cover 7 is connected to the connector 8 by a lower end pipe 81 through a screw, and a seal ring is provided in a deep portion of the screw.
As shown in fig. 4, the lower end of the protecting pipe I3 can be connected with the anchorage device 1 by a thread pair 31, and a sealing ring 32 is arranged in the thread depth of the protecting pipe I3. As shown in FIG. 5, the lower end of the sheath pipe I3 and the anchorage 1 can be connected by a flange pair 33, and a sealing gasket 34 is arranged between the two flanges and is connected and fixed by a bolt assembly 35.
As shown in FIG. 6, the lower end of the sheath pipe II 4 and the upper end of the sheath pipe I3 can be connected by a thread pair 41, and a sealing ring 42 is arranged at the thread of the sheath pipe II 4. As shown in fig. 7, the lower end of the sheath pipe ii 4 and the upper end of the sheath pipe i 3 can be connected by a flange pair 43, and a sealing gasket 44 is arranged between the two flanges and is connected and fixed by a bolt assembly 45;
as shown in fig. 8 and 9, the inner wall of the lower pipe 81 of the connector 8 is provided with a forward (or backward) internal thread, which is connected with a forward (or backward) external thread at the small end of the waterproof cover 7; the upper end pipe 83 of the connector 8 is provided with a reverse (or forward) thread and is connected with a reverse (or forward) thread of the outer sleeve 9.
The protective sleeve I3 and the protective sleeve II 4 of the embodiment are stainless steel pipes, plastic-coated composite pipes or HDPE pipes; the material of the connector 8 is stainless steel or hot-dip galvanized or HDPE.
Example two
As shown in figures 3 and 8, the steel strand stay cable beam end sealing structure capable of preventing moisture from entering an anchorage device comprises a beam end anchorage device 1, a beam end embedded pipe 2, a protective sleeve I3, a steel strand bundle 5, a waterproof cover 7, a connector 8 and an outer sleeve 9. Beam-ends ground tackle 1 sets up inside beam-ends embedded pipe 2, and buckler 7 sets up the mouth of pipe at beam-ends embedded pipe 2, and connector 8 sets up in the upper end of buckler 7, and connector 8 and outer tube 9 sealing connection, protective casing I3 sets up inside beam-ends embedded pipe 2. The beam end steel wire bundle of the stay cable is unfolded and divided and anchored in the beam end anchorage 1, and the stay cable body sequentially penetrates through the protective sleeve I3, the waterproof cover 7 and the connector 8 and extends into the protective sleeve 9.
The lower extreme of protecting pipe I3 is connected with the front end of beam-ends ground tackle 1, and the upper end of protecting pipe I3 is free and stretches into in the tang of 8 inner walls of connector. The large end of the waterproof cover 7 is sleeved on the beam end embedded pipe 2, and the two are connected through a thread pair. Both ends of the connector 8 are respectively connected with the waterproof cover 7 and the outer sleeve 9, and the waterproof cover 7, the connector 8 and the outer sleeve 9 are communicated.
The inner diameter of the protective sleeve I3 is larger than the outer diameter of the steel strand bundle 5 and smaller than the inner diameter of the beam end embedded pipe 2; the inner diameter of the large end of the waterproof cover 7 is larger than the outer diameter of the embedded pipe 2, and the waterproof cover is sleeved on the embedded pipe 2; the inner diameter of the small end of the waterproof cover 7 is slightly larger than the outer diameter of the protective sleeve I3; the small end of the waterproof cover 7 and the connector 8 form a thread pair through a lower end pipe 81.
As shown in fig. 4, the lower end of the protective sleeve i 3 can be connected with the beam-end anchorage 1 by a thread pair 31, a sealing ring 32 is arranged at the thread of the protective sleeve i 3, the lower end of the protective sleeve i 3 can be connected with the anchorage 1 by a flange pair 33, a sealing gasket 34 is arranged between the two flanges, and the sealing gasket and the anchorage are connected and fixed by a bolt assembly 35;
as shown in fig. 8 and 9, the inner wall of the lower pipe 81 of the connector 8 is provided with a forward (or backward) internal thread, which is connected with a forward (or backward) external thread at the small end of the waterproof cover 7; the upper end pipe 83 of the connector 8 is provided with a reverse (or forward) thread and is connected with a reverse (or forward) thread of the outer sleeve 9.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a stay cable beam-ends seal structure, includes beam-ends ground tackle (1), beam-ends embedded pipe (2), buckler (7) and outer tube (9), beam-ends ground tackle (1) sets up inside beam-ends embedded pipe (2), and buckler (7) set up the mouth of pipe in beam-ends embedded pipe (2), and the beam-ends steel wire bundle of stay cable expandes branch silk anchor in beam-ends ground tackle (1), and the stay cable passes beam-ends embedded pipe (2), buckler (7) in proper order and stretches into in outer tube (9), its characterized in that: still be provided with connector (8) between buckler (7) and outer tube (9), the inside protective casing that is provided with of beam-ends embedded pipe (2), the stay cable passes from the protective casing is inside, and the protective casing directly communicates outer tube (9) through connector (8), and annular gap and the inside mutual isolation of protective casing between protective casing outer wall and the beam-ends embedded pipe (2) inner wall.
2. A stay cable beam-end sealing structure according to claim 1, characterized in that: the lower end of the protective sleeve is hermetically connected with the beam end anchorage device (1).
3. A stay cable beam-end sealing structure according to claim 2, characterized in that: the protective sleeve and the beam end anchorage device (1) form a thread pair, and a sealing ring (32) is arranged in the deep connecting part of the thread pair.
4. A stay cable beam-end sealing structure according to claim 2, characterized in that: the protective sleeve and the beam end anchorage device (1) form a flange pair, and a sealing gasket (34) is arranged at the joint of the flange pair.
5. A stay cable beam-end sealing structure according to claim 1, characterized in that: connector (8) have upper end pipe (83), lower extreme pipe (81), and upper end pipe (83) are connected with outer tube (9), and lower extreme pipe (81) are connected with buckler (7), and the intraductal perisporium shaping of lower extreme is annular tang (82), the center pin coincidence of annular tang (82), upper end pipe, lower extreme pipe, the upper end of protecting pipe freely stretches into in this annular tang.
6. A stay cable beam-end sealing structure according to claim 5, characterized in that: the upper end pipe (83) and the outer sleeve (9) form a thread pair, a step is formed on the outer pipe wall of the upper end pipe (83), and after the upper end pipe (83) and the outer sleeve (9) are screwed in place, the step of the upper end pipe (83) is abutted against the end face of the outer sleeve (9).
7. A stay cable beam-end sealing structure according to claim 5, characterized in that: the lower end pipe (81) and the waterproof cover (7) form a thread pair, a step is formed on the inner pipe wall of the lower end pipe (81), and after the lower end pipe (81) and the waterproof cover (7) are screwed in place, the step of the lower end pipe (81) is abutted against the end face of the waterproof cover (7).
8. A stay cable beam-end sealing structure according to claim 5, characterized in that: the inner wall diameter of annular tang (82) is less than the inner wall diameter of protecting pipe, the outer wall diameter of annular tang (82) is greater than the outer wall diameter of protecting pipe, and the upper end of protecting pipe stretches into in annular tang (82) to can freely the axial stretch out and draw back.
9. A stay cable beam-end sealing structure according to claim 1, characterized in that: the protective sleeve is formed by splicing a plurality of protective sleeve units with more than two sections.
10. A stay cable beam-end sealing structure according to claim 9, wherein: the adjacent sheath pipe units are connected in a sealing way: the adjacent sheath pipe units form a thread pair, and a sealing ring is arranged at the connecting deep part of the thread pair; or adjacent sheath pipe units form a flange pair, and a sealing gasket is arranged at the joint of the flange pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920385330.5U CN210163781U (en) | 2019-03-26 | 2019-03-26 | Stay cable beam end sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920385330.5U CN210163781U (en) | 2019-03-26 | 2019-03-26 | Stay cable beam end sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210163781U true CN210163781U (en) | 2020-03-20 |
Family
ID=69788859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920385330.5U Active CN210163781U (en) | 2019-03-26 | 2019-03-26 | Stay cable beam end sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210163781U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109944158A (en) * | 2019-03-26 | 2019-06-28 | 江阴法尔胜住电新材料有限公司 | A kind of suspension cable beam-ends sealing structure |
| CN111593674A (en) * | 2020-06-12 | 2020-08-28 | 安徽省公路桥梁工程有限公司 | Suspended casting beam cable construction structure and construction method for n-shaped beam bridge |
-
2019
- 2019-03-26 CN CN201920385330.5U patent/CN210163781U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109944158A (en) * | 2019-03-26 | 2019-06-28 | 江阴法尔胜住电新材料有限公司 | A kind of suspension cable beam-ends sealing structure |
| CN111593674A (en) * | 2020-06-12 | 2020-08-28 | 安徽省公路桥梁工程有限公司 | Suspended casting beam cable construction structure and construction method for n-shaped beam bridge |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210163781U (en) | Stay cable beam end sealing structure | |
| CN109944158A (en) | A kind of suspension cable beam-ends sealing structure | |
| US20110138706A1 (en) | Wind turbine anchor element | |
| CN205877455U (en) | Prestressing force steel cylinder concrete pipe | |
| CN202644399U (en) | Sealing-type inhaul cable | |
| CN210890634U (en) | Rag bolt protector | |
| CN212000590U (en) | Main and auxiliary arch rib opposite-pulling device for arch bridge | |
| CN213203803U (en) | Totally enclosed dry-air dehumidification cable | |
| CN102162346A (en) | Quick assembling and disassembling heat-preserving device for christmas tree | |
| CN217419316U (en) | Sealing structure for opening of stay cable guide pipe | |
| JP3204298U (en) | Single steel wire sealing structure of bridge cable | |
| CN112523085B (en) | Inhaul cable protecting sleeve with functional elements and construction method thereof | |
| CN110397177B (en) | U-shaped anti-seismic steel frame of composite steel and construction method | |
| CN210802738U (en) | Fiber grating sensor for measuring shield segment pressure | |
| CN107794842B (en) | High-performance durable anti-corrosion inhaul cable anchorage device and construction method thereof | |
| CN211368764U (en) | Anticorrosive waterproof construction of wind generating set crab-bolt cage subassembly | |
| CN217353301U (en) | Brickwork envelope structure for building | |
| CN210127402U (en) | Steel strand wires suspension cable beam-ends buckler | |
| US20220127803A1 (en) | Long-service-life PWS Cable with Replaceable Sleeve and Shielding gas | |
| CN207947578U (en) | A kind of cable testing bridge antidetonation suspension and support | |
| CN112081446A (en) | Connection structure of dock cement electric pole | |
| CN219059755U (en) | Intelligent waterproof cover for inhaul cable | |
| CN212477420U (en) | Waterproof hoop of jib | |
| CN211689909U (en) | Transparent protective cover for end part of stay cable | |
| CN215725994U (en) | Distributed optical fiber temperature compensation section fixing and protecting device for tunnel structure monitoring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |