CN107974932A - One kind is paddled bridge pier protection guard - Google Patents
One kind is paddled bridge pier protection guard Download PDFInfo
- Publication number
- CN107974932A CN107974932A CN201711279000.XA CN201711279000A CN107974932A CN 107974932 A CN107974932 A CN 107974932A CN 201711279000 A CN201711279000 A CN 201711279000A CN 107974932 A CN107974932 A CN 107974932A
- Authority
- CN
- China
- Prior art keywords
- bridge pier
- deflector
- stent
- paddled
- clip
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/20—Equipment for shipping on coasts, in harbours or on other fixed marine structures, e.g. bollards
- E02B3/26—Fenders
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Paddle bridge pier protection guard the invention discloses one kind, for reducing impact of the current to bridge pier, including the clip being detachably fastenedly connected on bridge pier, for the deflector for shunting river water, and the attachment device of the connection deflector and clip, the deflector is made of two pieces of tablets being fixedly connected, and level cross-sectionn is V-shaped and dimension linearity is incremented by from top to bottom；The stent for two pieces of tablets for being fixedly connected with deflector is fixedly installed in the v-angle of the deflector, the stent is detachably fixed the spiral anchor rod for being connected with and penetrating in riverbed bottom.The present invention by the base of bridge pier meet water side be fixedly mounted; current directly can be divided into by both sides by deflector; directly avoid impact of the current to bridge pier base; and the convolution nest that current can produce at bridge pier; huge lateral forces so as to completely avoid current achieve the purpose that protection in bridge pier base.
Description
Technical field
The present invention relates to the bridge pier maintenance device field of bridge inspection and maintenance device field, more particularly to a kind of bridge of paddling, tool
Body says, is that one kind is paddled bridge pier protection guard.
Background technology
With the continuous development and prosperity of traffic, road demand is more and more, and quality is also higher and higher, before about 20 years, I
State, which praises in Shanghai in 1988 being open to the traffic for highway, realizes the China's Mainland highway breakthrough of zero, that kind Chinese high speed
The too late present highway such as criteria for noise that the surface conditions of highway, width, and vehicle produce during running quickly,
But the most key is a little, when running into gully or ridge, typically to be evaded by the way of detour, without
Select traveled straight, the most typical is exactly Chengdu-Chongqing expressway, its most important reason be exactly bridge formation technology at that time still not
Maturation, the ability of the bridge erection for strategically located and difficult of access area are very limited.So that in highway when building, it is impossible to road
Straight and distance the most short key element considered as priority.And it is present, either in building highway or high-speed railway all
It is strictly one of factor that the glacing flatness of road considers as priority with vehicle most short transit time, important factor among these
It is the bridge formation technology for having benefited from China's rapid development and mature.
According to incompletely statistics, the paddle bridge that has bridge pier of China's span more than 100 meters has tens thousand of seats, and southwest is outstanding
To be more, the expense that the annual detection because spending in bridge pier is safeguarded is very huge.Due to bridge pier build when be strictly by
Surveyed and drawn and built according to the geological condition of the phase of construction, the bridge pier being especially built on riverbed, although the bottom for bridge pier
The surplus for having safety coefficient is estimated, and the erosion that river water washes away retains, but substantial amounts of bridge pier bottom still occurs in reality
Portion's load-bearing reinforcing steel bars exposed, corrosion, even results in bridge pier and strengthens or rebuild again, and what this secondary reparation for bridge produced takes
With very high.For this reason, it may be necessary to a kind of avoid bridge is secondary from repairing the device for producing protection to bridge pier.It is not yet special in the prior art
Door is Pier Design protective device, typically that bridge pier setting is in cylinder or arc-shaped in upstream face setting, as far as possible
Resistance is reduced, avoids bridge pier from bearing excessive lateral force, influences the stability of bridge.
The content of the invention
Paddle bridge pier protection guard it is an object of the invention to provide one kind, dress is not protected for solving existing highway bridge
The problem of putting, being subject to current scour to cause bridge pier base to be damaged, influence bridge life on riverbed for a long time；Meanwhile solve bridge
For pier under the impact of turbulent water, the lateral force being subject to is larger, the problem of influencing bridge safty.
The present invention is achieved through the following technical solutions：
One kind is paddled bridge pier protection guard, for reducing impact of the current to bridge pier, including is detachably fastenedly connected on bridge pier
Clip, for the deflector for shunting river water, and the attachment device of the connection deflector and clip, the deflector by
Two pieces of tablet compositions being fixedly connected, level cross-sectionn is V-shaped and dimension linearity is incremented by from top to bottom；The V-type of the deflector
The stent for two pieces of tablets for being fixedly connected with deflector is fixedly installed in angle, the stent is detachably fixed to be connected with and penetrates
The spiral anchor rod of riverbed bottom.
Operation principle and installation method：First, area is carried out according to the different of installation geology when the present invention is installed
Do not install；If installation geology belongs to cobblestone or rock texture, need with the drilling rod pair to match with spiral anchor rod size
Riverbed carries out prebored hole, otherwise, spiral anchor rod can be caused to be directly protruding into riverbed, so as to cannot reach optimal fastening effect
Fruit.If the geology of installation belongs to aggregate structure, then need not then carry out prebored hole, and need using larger-diameter spiral
Anchor pole, and using spiral anchor rod of the length more than two meters, to ensure that spiral anchor rod can have enough stablizing effects.
After the geological condition of actual installation, interim mounting bracket and erecting bed are built on riverbed using scaffold,
And after carrying out first spiral anchor rod of location and installation according to the method described above with rockbolt installation torsion machine, deflector is hung with lifting rope
Rise, measure and be used for the distance and bearing for connecting the position of spiral anchor rod on stent, to have installed first with Screw Anchor
The step of being positioned on the basis of bar on riverbed, and repeating first spiral anchor rod installation, by remaining more spiral anchor rods
On riverbed.
Finally, hung using rope and slowly put down deflector, and more fixations that are corresponding and being fixedly mounted on riverbed
Anchor pole is reliably connected.The fixation in deflector and riverbed is would have been completed to this, since deflector is to separate river water to bridge
Deflector, therefore, is installed on the side that meets water of bridge pier, this belongs to common knowledge, therefore, for how to determine water conservancy diversion by the impact of pier
The specific installation site of plate, then belong to common knowledge, be just not detailed herein.After deflector is fixed on riverbed, may be used
To realize predetermined technique effect, but it is a very persistent process since river water washes away, and the service intervals of bridge are all
Phase is also very long；So in order to further improve the stability of deflector and impact resistance, also using being fixed on bridge pier
On clip be fixedly connected using attachment device with stent such purpose be in order to when deflector is subject to greater impact, can
A part of lateral force is passed into bridge pier by attachment device, so can further improve the stability of deflector.
In order to realize the present invention with further, the convenient degree of installation is improved, while reduce installation difficulty, it is preferable that institute
Stating spiral anchor rod includes bolt body, the flight being welded on bolt body circumferential side wall, welding or integrally formed spiral shell
Anchor pole head is revolved, the spiral anchor rod rostral wall is provided with external screw thread, and middle part is in axial direction provided with section in regular hexagon
Drive hole, the depth of the drive hole are the %-% of the Screw Anchor head length；It is fixedly installed on the stent and the spiral shell
The sleeve joint device that rotation anchor pole head is adapted.It is fixed by the way of threaded connection, is that spiral anchor rod is installed in order to balance
Convenient degree and the convenience that installation is combined with stent.Certainly, since the present invention is typically upon install rarely possible time
Go to dismantle, therefore, big in difficulty of construction, complicated geology, cause precision to be not easy the riverbed held, the side of welding can also be used
Formula replaces the mode of above-mentioned threaded connection.Due to needing very big moment of torsion could be by whole threaded anchor rod when installing spiral anchor rod
It is entirely insertable inside riverbed, so it is to avoid torsion machine installation spiral that concave interior hexagonal mounting hole is set in Screw Anchor head
Phenomenon is had skidded during anchor pole.
In order to further improve the install convenient of the present invention, it is preferable that the sleeve joint device includes and the spiral shell
The screw shell that rotation anchor pole head is adapted, the screw shell two ends are respectively openend and blind end；Use the openend
In accommodating the Screw Anchor head, the blind end is rotatably connected with stent.
In order to further improve the install convenient of the present invention, it is preferable that the blind end bottom of the screw shell
Through hole is provided with, the stent is formed through the through hole to be expanded end and can be freely rotated in the through hole.Using above-mentioned knot
Structure easily can fix stent with the spiral anchor rod being already fixed on riverbed.
Still more preferably, the attachment device includes the stabiliser bar for being hinged or welding with stent, and the stabiliser bar is another
One end is fixedly connected with U-shaped, and described U-shaped is hinged by the second stud with connector, and the other end of connector passes through
First stud is fixedly connected with the clip.
Still more preferably, the clip is connected by symmetrical two circular arc shape steel plates by two the first stud fastenings
Connect.
Compared with prior art, the present invention haing the following advantages and beneficial effect：
（1）The present invention by the base of bridge pier meet water side be fixedly mounted, current directly can be divided into by both sides by deflector,
Directly avoid impact of the current to bridge pier base, and the convolution nest that current can produce at bridge pier, so as to completely avoid water
The huge lateral forces of stream achieve the purpose that protection in bridge pier base.
（2）The present invention fixes deflector using spiral anchor rod, from the influence of installation geology, effectively can install and have
Good fixed effect, usage range is wide, and can be with bridge pier synchronous construction, can also after Bridge Pier Construction or
Put on practical bridge and apply, can obtain good beneficial effect.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is along the sectional structure chart of cutting symbol A-A in Fig. 1；
Fig. 3 is the connection sectional view of stent and spiral anchor rod；
Fig. 4 is B plot structure enlarged drawings in Fig. 1；
Wherein 1- bridge piers；2- clips；The first studs of 3-；4- connectors；The second studs of 5-；6- stabiliser bars；61-U types
Piece；7- stents；71- screw shells；8- deflectors；9- spiral anchor rods；91- flights；93- Screw Anchor heads.
Embodiment
The present invention is described in further detail with reference to embodiment, but the implementation of the present invention is not limited to this.
Embodiment 1：
With reference to shown in attached drawing 1-2, one kind is paddled bridge pier protection guard, for reducing impact of the current to bridge pier 1, including it is detachable
The clip 2 on bridge pier 1 is fastenedly connected, for the deflector 8 for shunting river water, and connects the deflector 8 and clip 2
Attachment device, the deflector 8 are made of two pieces of tablets being fixedly connected, and level cross-sectionn is V-shaped and dimension line from top to bottom
Property is incremented by；The stent 7 for two pieces of tablets for being fixedly connected with deflector 8 is fixedly installed in the v-angle of the deflector 8, it is described
Stent 7 is detachably fixed the spiral anchor rod 9 for being connected with and penetrating in riverbed bottom.
Operation principle and installation method：First, area is carried out according to the different of installation geology when the present invention is installed
Do not install；If installation geology belongs to cobblestone or rock texture, need with the drilling rod pair to match with 9 size of spiral anchor rod
Riverbed carries out prebored hole, otherwise, spiral anchor rod 9 can be caused to be directly protruding into riverbed, so as to cannot reach optimal fastening effect
Fruit.If the geology of installation belongs to aggregate structure, then need not then carry out prebored hole, and need using larger-diameter spiral
Anchor pole 9, and using spiral anchor rod 9 of the length more than two meters, to ensure that spiral anchor rod 9 can have enough stablizing effects.
After the geological condition of actual installation, interim mounting bracket and erecting bed are built on riverbed using scaffold,
And after carrying out first spiral anchor rod 9 of location and installation according to the method described above with rockbolt installation torsion machine, with lifting rope by deflector 8
Sling, measure and be used for the distance and bearing for connecting the position of spiral anchor rod 9 on stent 7, to have installed first with spiral shell
Positioned on the basis of rotation anchor pole 9 on riverbed, and repeat the step of first spiral anchor rod 9 is installed, by remaining more spiral shells
Anchor pole 9 is revolved to be installed on riverbed.
Finally, hung using rope and slowly put down deflector 8, and more fixations that are corresponding and being fixedly mounted on riverbed
Anchor pole 9 is reliably connected.The fixation of deflector 8 and riverbed is would have been completed to this, since deflector 8 is to separate river water pair
Deflector 8, therefore, is installed on the side that meets water of bridge pier 1, this belongs to common knowledge, therefore, for how true by the impact of bridge pier 1
Determine the specific installation site of deflector 8, then belong to common knowledge, be just not detailed herein.When deflector 8 is fixed on riverbed
Afterwards, it is already possible to realize predetermined technique effect, but be a very persistent process since river water washes away, and the dimension of bridge
It is also very long to protect gap periods；So in order to further improve the stability of deflector 8 and impact resistance, also using solid
The clip 2 being scheduled on bridge pier 1 be fixedly connected using attachment device with stent 7 such purpose be in order to when deflector 8 be subject to compared with
During large impact, a part of lateral force can be passed to bridge pier 1 by attachment device, so can further improve deflector
8 stability.
Embodiment 2：
In order to realize the present invention with further, the convenient degree of installation is improved, while reduces installation difficulty, the present embodiment is being implemented
On the basis of example 1, further combined with shown in attached drawing 3-4, the spiral anchor rod 2 includes bolt body, is welded on bolt body circle
Flight 91 on all side walls, welding or integrally formed Screw Anchor head 93,93 side wall of Screw Anchor head are provided with
External screw thread, middle part are in axial direction provided with the drive hole that section is in regular hexagon, and the depth of the drive hole is described spiral
The 30%-70% of first 93 length of anchor pole；The set being adapted with the Screw Anchor head 93 is fixedly installed on the stent 7 to be hinged with
Put.It is fixed by the way of threaded connection, is spiral anchor rod 9 is installed in order to balance convenient degree and carry out group with stent 7
Close the convenience of installation.Certainly, due to the present invention typically upon install it is rarely possible go back to dismantle, it is difficult in construction
Degree is big, complicated geology, causes precision to be not easy the riverbed held, and can also replace above-mentioned threaded connection by the way of welding
Mode.Due to needing very big moment of torsion that whole threaded anchor rod 9 could be entirely insertable inside riverbed when installing spiral anchor rod 9,
So it is to avoid torsion machine from being had skidded when installing spiral anchor rod 9 that concave interior hexagonal mounting hole is set in Screw Anchor head 93
Phenomenon.
In order to further improve the install convenient of the present invention, it is preferable that the sleeve joint device includes and the spiral shell
The adaptable screw shell 71 of anchor pole first 93 is revolved, 71 two ends of screw shell are respectively openend and blind end；It is described to open
Mouth end is used to accommodate the Screw Anchor head 93, and the blind end is rotatably connected with stent 7.
In order to further improve the install convenient of the present invention, it is preferable that the blind end bottom of the screw shell 71
Portion is provided with through hole, and the stent 7 is formed through the through hole to be expanded end and can be freely rotated in the through hole.Using above-mentioned
Structure easily can fix stent 7 with the spiral anchor rod 9 being already fixed on riverbed.
Still more preferably, the attachment device includes the stabiliser bar 6 for being hinged or welding with stent 7, the stabiliser bar 6
The other end is fixedly connected with U-shaped 61, and described U-shaped 61 is hinged by the second stud 5 and connector 4, connector 4 it is another
One end is fixedly connected with the clip 2 by the first stud 3.
Still more preferably, the clip 2 is fastened by symmetrical two circular arc shape steel plates by two the first studs 3
Connection.
The above, is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is every according to
Any simply modification, the equivalent variations made according to the technical spirit of the present invention to above example, each fall within the protection of the present invention
Within the scope of.
Claims (6)
- The bridge pier protection guard 1. one kind is paddled, for reducing current to bridge pier（1）Impact, it is characterised in that：Including detachable It is fastenedly connected in bridge pier（1）On clip（2）, for the deflector for shunting river water（8）, and the connection deflector（8） And clip（2）Attachment device, the deflector（8）Be made of two pieces of tablets being fixedly connected, level cross-sectionn it is V-shaped and from It is incremented by up to lower dimension linearity；The deflector（8）V-angle in be fixedly installed and be fixedly connected with deflector（8）Two pieces The stent of tablet（7）, the stent（7）It is detachably fixed the spiral anchor rod for being connected with and penetrating in riverbed bottom（9）.
- The bridge pier protection guard 2. one kind according to claim 1 is paddled, it is characterised in that：The spiral anchor rod（2）Including Bolt body, the flight being welded on bolt body circumferential side wall（91）, welding or integrally formed Screw Anchor head （93）, the Screw Anchor head（93）Side wall is provided with external screw thread, and middle part is in axial direction provided with section in regular hexagon Drive hole, the depth of the drive hole is the Screw Anchor head（93）The 30%-70% of length；The stent（7）Upper fixation is set It is equipped with and the Screw Anchor head（93）Adaptable sleeve joint device.
- The bridge pier protection guard 3. one kind according to claim 2 is paddled, it is characterised in that：The sleeve joint device includes and institute State Screw Anchor head（93）Adaptable screw shell（71）, the screw shell（71）Two ends are respectively openend and closing End；The openend is used to accommodate the Screw Anchor head（93）, the blind end and stent（7）Rotatable connection.
- The bridge pier protection guard 4. one kind according to claim 3 is paddled, it is characterised in that：The screw shell（71）Envelope Closed end bottom is provided with through hole, the stent（7）Formed through the through hole and expand end and can be freely rotated in the through hole.
- The bridge pier protection guard 5. one kind according to claim 1 is paddled, it is characterised in that：The attachment device includes and branch Frame（7）Hinged or welding stabiliser bar（6）, the stabiliser bar（6）The other end is fixedly connected with U-shaped（61）, described U-shaped （61）Pass through the second stud（5）With connector（4）It is hinged, connector（4）The other end pass through the first stud（3）Gu Surely the clip is connected（2）.
- The bridge pier protection guard 6. one kind according to claim 1 is paddled, it is characterised in that：The clip（2）By symmetrical Two circular arc shape steel plates pass through two the first studs（3）It is fastenedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711279000.XA CN107974932B (en) | 2017-12-06 | 2017-12-06 | One kind is paddled bridge pier protection guard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711279000.XA CN107974932B (en) | 2017-12-06 | 2017-12-06 | One kind is paddled bridge pier protection guard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107974932A true CN107974932A (en) | 2018-05-01 |
| CN107974932B CN107974932B (en) | 2019-08-13 |
Family
ID=62009386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711279000.XA Active CN107974932B (en) | 2017-12-06 | 2017-12-06 | One kind is paddled bridge pier protection guard |
Country Status (1)
| Country | Link |
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| CN (1) | CN107974932B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577175A (en) * | 2019-01-30 | 2019-04-05 | 重庆文理学院 | A kind of Bridge Pier system |
| CN111424730A (en) * | 2020-03-18 | 2020-07-17 | 石家庄铁道大学 | Comb flow tooth device for resisting scouring of heavy-duty railway bridge pier column foundation |
| CN111705553A (en) * | 2020-05-20 | 2020-09-25 | 安徽浦进轨道装备有限公司 | Vehicle track supporting component |
| CN111733686A (en) * | 2020-06-30 | 2020-10-02 | 黄河水利委员会黄河机械厂 | Layered pier air guide sleeve capable of clamping step by step |
| CN112144388A (en) * | 2020-10-10 | 2020-12-29 | 马征 | Protection device for pier during water rising and water falling and construction method |
| CN112460105A (en) * | 2020-11-24 | 2021-03-09 | 杨朗者 | Monitoring device for ecological environment and environmental pollution |
| CN112853942A (en) * | 2021-01-11 | 2021-05-28 | 大连理工大学 | Hinged rectifying plate for reducing water resistance of pier |
| CN113811655A (en) * | 2020-10-10 | 2021-12-17 | 嘉兴金喜莱科技有限公司 | Pier protection structure and position angle calculation method thereof |
| CN115323897A (en) * | 2021-11-10 | 2022-11-11 | 浙江理工大学 | Streamline scour prevention device of concave surface of assembly on pier |
| CN117845836A (en) * | 2024-02-22 | 2024-04-09 | 浙江华展研究设计院股份有限公司 | Harbor pier protector |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577175A (en) * | 2019-01-30 | 2019-04-05 | 重庆文理学院 | A kind of Bridge Pier system |
| CN111424730A (en) * | 2020-03-18 | 2020-07-17 | 石家庄铁道大学 | Comb flow tooth device for resisting scouring of heavy-duty railway bridge pier column foundation |
| CN111705553A (en) * | 2020-05-20 | 2020-09-25 | 安徽浦进轨道装备有限公司 | Vehicle track supporting component |
| CN111733686B (en) * | 2020-06-30 | 2021-08-20 | 黄河水利委员会黄河机械厂 | Layered pier air guide sleeve capable of clamping step by step |
| CN111733686A (en) * | 2020-06-30 | 2020-10-02 | 黄河水利委员会黄河机械厂 | Layered pier air guide sleeve capable of clamping step by step |
| WO2022073146A1 (en) * | 2020-10-10 | 2022-04-14 | 嘉兴金喜莱科技有限公司 | Bridge pier protection structure and position and angle calculation method therefor |
| CN113811655A (en) * | 2020-10-10 | 2021-12-17 | 嘉兴金喜莱科技有限公司 | Pier protection structure and position angle calculation method thereof |
| CN112144388A (en) * | 2020-10-10 | 2020-12-29 | 马征 | Protection device for pier during water rising and water falling and construction method |
| CN112460105A (en) * | 2020-11-24 | 2021-03-09 | 杨朗者 | Monitoring device for ecological environment and environmental pollution |
| CN112853942A (en) * | 2021-01-11 | 2021-05-28 | 大连理工大学 | Hinged rectifying plate for reducing water resistance of pier |
| CN115323897A (en) * | 2021-11-10 | 2022-11-11 | 浙江理工大学 | Streamline scour prevention device of concave surface of assembly on pier |
| CN117845836A (en) * | 2024-02-22 | 2024-04-09 | 浙江华展研究设计院股份有限公司 | Harbor pier protector |
| CN117845836B (en) * | 2024-02-22 | 2024-05-31 | 浙江华展研究设计院股份有限公司 | Harbor pier protector |
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| Publication number | Publication date |
|---|---|
| CN107974932B (en) | 2019-08-13 |
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