Anti-corrosion protection device capable of monitoring steel pull rod of sheet pile wharf
By using anti-corrosion protection devices of anti-corrosion metal pipes and monitoring units in the sheet pile dock, the problem of easy corrosion of steel tie rods is solved, real-time monitoring and anti-corrosion effects are achieved, the service life of steel tie rods is extended, and potential dock structural accidents are avoided .
Patent Information
- Application Number
- CN202421181758.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-05-28
AI Technical Summary
The steel tie rods in the sheet pile dock are susceptible to electrochemical corrosion and biocorrosion. The existing anti-corrosion methods cannot effectively prevent corrosion, resulting in early damage to the steel tie rods and are difficult to monitor, which may lead to a collapse of the dock structure.
An anti-corrosion protection device including anti-corrosion metal pipe and a monitoring unit was designed. The steel pull rod was inserted into the anti-corrosion metal pipe. The tube was filled with oily liquid to isolate corrosion. The monitoring unit monitored the oil pressure changes in real time. The anti-corrosion metal pipe adopts a multi-layer structure and steel. Grating plates are used to enhance corrosion resistance and to achieve conformal support and telescopic structures through wire ropes and rubber double-head joints.
Effectively prevent corrosion of steel tie rods, monitor their anti-corrosion status in real time, prevent potential accidents, extend the service life of steel tie rods, and improve the safety and stability of the dock structure.
Smart Images
Figure CN222332589U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of dock construction engineering, and in particular refers to an anti-corrosion protection device capable of monitoring steel tie rods of sheet pile docks. Background Art
[0002] As one of the main structural forms of current docks, sheet pile docks rely on the lateral soil resistance provided by sheet piles, steel tie rods, anchor structures and dock equipment, and the reaction force provided by anchor structures to maintain the stability of the dock. The dock is widely used because of its simple structure, small amount of steel, relatively low cost, and the fact that the construction of sheet pile docks can be completed without a large amount of earth excavation and backfilling behind the sheet pile dock.
[0003] During the operation of the sheet pile wharf, the steel tie rod is an important component that connects the front wall and the anchor structure and bears the axial tension. Affected by its material properties and the characteristics of the use environment, the durability of the steel tie rod is the main factor affecting the load strength, load stability and service life of the sheet pile wharf. In the marine environment, the steel tie rod is susceptible to electrochemical corrosion and biological corrosion. In addition, the steel tie rod is buried in the sheet pile wharf of reinforced concrete structure. During the dynamic loading process or when the reinforced concrete cracks, if the steel tie rod has early wear, the wear and corrosion effects are superimposed on each other, and the steel tie rod is prone to lose local material stiffness and strength, which eventually leads to the failure of the steel tie rod.
[0004] Once corrosion occurs, cracks are likely to form and spread under the action of internal tensile stress. The failure rate of the steel tie rod is very fast, and the early local rust or wear of the steel tie rod is not easy to detect and observe, which will cause the steel tie rod to quickly develop to a failure state. The tensile performance of concrete materials is insufficient, and it is very easy to crack under the action of external loads, and even collapse accidents may occur. Therefore, the steel tie rods in the sheet pile wharf have relatively high requirements for anti-corrosion performance, and the anti-corrosion methods in the existing technology cannot meet this requirement, and it is impossible to understand the anti-corrosion status of the steel tie rods in the concrete material in real time, and it is impossible to predict accidents and carry out emergency plans. Utility Model Content
[0005] The purpose of the utility model is to overcome the defects of the prior art and provide an anti-corrosion protection device capable of monitoring the steel tie rods of sheet pile docks, so as to solve one or more problems raised in the above-mentioned background technology.
[0006] In order to achieve the above purpose, the technical solution of the utility model is as follows:
[0007] The invention discloses an anti-corrosion protection device capable of monitoring the steel tie rod of a sheet pile wharf, wherein one end of the steel tie rod is fixedly connected to the breast wall of the sheet pile wharf, and the other end is fixedly connected to the guide beam of the sheet pile wharf. The anti-corrosion protection device comprises an anti-corrosion metal pipe and a monitoring unit. The steel tie rod is inserted into the anti-corrosion metal pipe, and the anti-corrosion metal pipe is filled with an oily liquid wrapped around the outer surface of the steel tie rod to isolate the steel tie rod from the air. The anti-corrosion metal pipe is a multi-section pipe splicing structure, wherein two sections of the pipe at both ends are respectively embedded in the breast wall and the guide beam, and the ends are sealed in advance. Each section of the pipe is linearly connected in series to form an internal sealed channel. An oil filling hole is provided on the anti-corrosion metal pipe. The monitoring unit is externally arranged on the sheet pile wharf, and its signal acquisition probe is inserted into the anti-corrosion metal pipe to collect the oil pressure of the oily liquid in the anti-corrosion metal pipe.
[0008] Furthermore, the steel tie rod is eccentrically arranged in the anti-corrosion metal pipe, and the central axis of the steel tie rod is located directly below the central axis of the anti-corrosion metal pipe to reserve settlement amount.
[0009] Furthermore, the anti-corrosion protection device also includes a steel grating plate, which has an inverted V-shaped structure and is arranged directly above the anti-corrosion metal pipe to screen sand and soil to fill the outer periphery of the anti-corrosion metal pipe. The steel grating plate is conformally supported and positioned by at least three steel wire ropes, and the steel wire ropes are tensioned between the breast wall and the guide beam.
[0010] Furthermore, a protective tube is arranged outside the steel wire rope, and the protective tube is filled with a semi-solid oily material.
[0011] Furthermore, the steel grating plate is formed by linearly splicing steel grating sub-plates, and equal-length protective pipe sections are welded on the steel grating sub-plates along the length direction. Adjacent steel grating sub-plates are spliced by connecting corresponding protective pipe sections via rubber double-head joints. The middle part of the rubber double-head joint is a clamping boss, and expansion joints with the same width as the clamping boss are formed between adjacent steel grating sub-plates.
[0012] Furthermore, the anti-corrosion metal pipe is a double-layer metal composite pipe of an extruded integrally formed structure, which includes an outer inert metal layer, a middle oily isolation layer and an inner carbon steel layer.
[0013] Compared with the prior art, the anti-corrosion protection device capable of monitoring the steel tie rod of the sheet pile wharf of the utility model has the following beneficial effects:
[0014] 1. The steel tie rods, which are the main force-bearing bodies of the sheet pile wharf, are set in the anti-corrosion metal pipes to prevent the steel tie rods from being corroded by seawater and the like, and to avoid early damage to the steel tie rods caused by fillers during backfilling construction; secondly, the anti-corrosion metal pipes are filled with oily liquid with a certain pressure, and the oil pressure is immersed and wrapped to isolate the steel tie rods and their components, which can isolate the corrosion of harmful ions such as chloride ions on the steel tie rods and their components, and the anti-corrosion effect is better; therefore, the anti-corrosion protection device protects the steel tie rods by setting up a multi-level anti-corrosion structure, and the anti-corrosion structures at each level are related, interact with each other, and are effectively combined to improve the anti-corrosion performance of the anti-corrosion protection device;
[0015] 2. By monitoring the oil pressure changes of the oily liquid in the anti-corrosion metal pipe in real time through the monitoring unit, the anti-corrosion status of the steel tie rod can be timely understood. When abnormal fluctuations occur in the monitoring unit, the patrol personnel can obtain the fluctuation information intuitively, so as to carry out emergency plan processing and promote the repair work, thereby increasing the effective service life of the steel tie rod of the sheet pile wharf and avoiding the occurrence of sudden accidents. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the overall structure of the sheet pile wharf of the utility model;
[0017] Figure 2 for Figure 1 A schematic diagram of the local enlarged structure at position I in the middle;
[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the anti-corrosion protection device of the utility model.
[0019] In the figure: 1. Sheet pile wall; 2. Casting load-bearing platform; 3. Breast wall; 4. Wharf base; 5. Monitoring unit; 6. Anti-corrosion protection device; 61. Anti-corrosion metal pipe; 611. Inert metal layer; 612. Carbon steel layer; 613. Oily isolation layer; 62. Flexible joint; 63. Steel grating; 64. Oily liquid; 65. Steel wire rope; 66. Protective pipe; 7. Steel pull rod; 8. Anchor wall; 9. Guide beam. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only the best embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] like Figure 1-Figure 3 As shown, this embodiment provides an anti-corrosion protection device capable of monitoring the steel tie rods of a sheet pile wharf, wherein the sheet pile wharf is cast on site, such as Figure 1As shown, it includes a sheet pile wall 1, a rear wall, a breast wall 3, an anchor wall 8, a cast bearing platform 2 and a wharf base 4. The breast wall 3 is arranged above the sheet pile wall 1 at the front. A plurality of supporting piles are poured behind the sheet pile wall 1. The top of the supporting piles is cast on site to form a cast bearing platform 2. Several anchor walls 8 are located at the rear and are longitudinally connected in series through a cast-in-place guide beam 9 on the top to enhance the structural strength. The wharf base 4 is arranged across the cast bearing platform 2 and the anchor wall 8.
[0022] First, during the pouring construction of the breast wall 3 and the guide beam 9, the second rod body 72 and the anti-corrosion metal pipe 61 at both ends are pre-buried, and the end joint 76 is provided at the end of the second rod body 72. The end joint 76 can increase the contact area between the end of the second rod body 72 and the poured body. At the same time, after the anti-corrosion metal pipe 61 at both ends is respectively passed through the second rod bodies 72 at both ends, the outer ends of the pipe bodies are pre-sealed, and then the two are pre-buried;
[0023] Secondly, concrete pads are arranged at the bottom along the length direction of the steel tie rod 7. The width and height of the pads can be adjusted by the construction unit according to the actual situation on site. The steel tie rod 7 and the anti-corrosion protection device 6 are assembled. In order to facilitate assembly and adjustment of the length of the steel tie rod 7 according to the length, the steel tie rod 7 is formed by splicing multiple sections through hinged joints, and is tensioned by a tensioner arranged in the middle to form a prestressed tensioning structure as a load-bearing beam inside the dock base 4;
[0024] like Figure 2 As shown, in the process of connecting the steel tie rods 7 in series, the anti-corrosion metal tube 61 and the flexible joint 62 of the anti-corrosion protection device 6 are pre-installed on the steel tie rods 7. After the pre-tensioning of the steel tie rods 7 is completed, the sections of the anti-corrosion metal tube 61 are gradually assembled from the two ends to the middle. Some of the tubes are connected by threads, and the remaining tubes are sealed and connected by threads at both ends of the flexible joint 62. The flexible joint 62 is used to eliminate the gaps between the tubes and provide a certain amount of expansion and contraction space. At the same time, concrete pads are used to support and adjust the height and position of each section of the tube to locate the position of the steel tie rods 7 in each section of the tube. After the anti-corrosion metal tubes 61 are connected in series, a closed annular channel is formed, and the oil filling holes on the tube bodies are used to fill the annular channel. Fill with oily liquid 64, such as hydraulic oil, at a certain pressure, and close the oil filling hole valve after filling is completed. The oily liquid 64 maintains a certain pressure, which can isolate the ions in the air that are easy to cause corrosion of the steel pull rod 7 on the basis of the anti-corrosion metal pipe 61; at the same time, the monitoring unit 5 is used to monitor the oil pressure of the annular channel. The display module of the monitoring unit 5 is externally placed on the sheet pile wharf, and its signal acquisition probe is penetrated into the anti-corrosion metal pipe 61. If there is a leakage of the oily liquid 64, the pressure gauge reading is zero. It is necessary to investigate the cause of the accident in time, such as concrete cracks causing the anti-corrosion metal pipe 61 to rust and fail, or excessive settlement causing the anti-corrosion metal pipe 61 to overload and leak, etc., and take corresponding maintenance and repair measures in time to prevent and solve hidden dangers at an early stage.
[0025] In addition, if Figure 3 As shown, since the wharf base 4 has a certain span, the farther away from the two end supports, the more likely it is to settle, and the anti-corrosion protection device 6 needs to allow a certain amount of settlement. Therefore, in order to allow the anti-corrosion metal pipe 61 to adapt to and synchronize the normal amount of settlement of the wharf base 4, the central axis of the steel tie rod 7 is eccentrically arranged downward in the anti-corrosion metal pipe 61, making full use of the hole diameter of the anti-corrosion metal pipe 61 and reserving sufficient settlement.
[0026] In order to improve the corrosion resistance of the corrosion-resistant metal tube 61, the corrosion-resistant metal tube is a double-layer metal composite tube, which includes an outer inert metal layer 611, an oily isolation layer 613 in the middle and an inner carbon steel layer 612. The inert metal layer 611 and the carbon steel layer 612 are formed into a bimetallic tube blank by composite extrusion. During the forming process, the bimetallic tube blanks are filled with oily materials. The oily materials are engine oil, butter or vaseline, which play a role in isolating the carbon steel tube blank and the inert metal tube blank. Electrochemical corrosion is not easy to occur in a seawater immersion environment. At the same time, it can avoid differential deformation of the inner and outer tube blanks due to inconsistent thermal expansion coefficients when subjected to external forces. In addition, during extrusion forming, the middle is filled with oily materials, which can make the two metal materials evenly stressed and deformed, and the forming effect is better. The inert metal layer 611 is made of copper or aluminum alloy with high corrosion resistance, and the carbon steel layer 612 is made of ordinary carbon steel or high-quality carbon steel with high compressive strength and hardness.
[0027] As a further technical solution, in order to effectively prevent large-size rocks from directly contacting the anti-corrosion metal pipe during use and backfilling, a steel grating plate 63 for shielding is arranged directly above the anti-corrosion metal pipe 61. The steel grating plate 63 is in an inverted V-shaped structure. When backfilling the buried pipe, large-size rocks roll down along the oblique edge of the steel grating plate 63, and small-size rocks or gravel can leak into the bottom through the mesh holes on the steel grating plate 63 and gradually accumulate. Therefore, the steel grating plate 63 fills the space between the steel grating plate 63 and the peripheral surface of the pipe body and the bottom of the pipe body by screening the particle size of the backfill sand, which can help to evenly support the anti-corrosion metal pipe 61, evenly transfer the load to the anti-corrosion metal pipe 61, and provide a dense protective environment. The setting of the steel grating plate 63 further prevents the wear of the anti-corrosion metal pipe 61 and improves the service life of the steel tie rod 7.
[0028] like Figure 3As shown, the steel grating plate 63 is supported and positioned by at least three steel wire ropes 65 distributed in a triangular shape. One end of the steel wire rope 65 is pre-buried in the breast wall 3, and the other end is tensioned to the tensioning hole on the guide beam 9 for fixation after the protection pipe 66 is assembled. The steel grating plate 63 is a segmented splicing structure, and expansion joints are reserved between the steel grating sub-plates. Equal lengths of protection pipe 66 sections are welded on the steel grating sub-plates along the length direction, one of which is welded on the inner top corner of the steel grating sub-plate, and the remaining protection pipe 66 sections are respectively penetrated and welded to the steel grating The two side plates of the sub-plates are symmetrically distributed with each other. The steel grating sub-plates are passed through the protective tube 66 sections on the steel wire rope 65, and are connected to the corresponding adjacent protective tube 66 sections by rubber double-headed joints. The rubber double-headed joints are hollow structures, and the middle part is a clamping boss. While realizing the connection of adjacent steel grating sub-plates, the clamping boss is clamped between adjacent adjacent steel grating sub-plates to form expansion joints between adjacent steel grating sub-plates to adapt to thermal expansion and contraction deformation. After the steel grating sub-plates are assembled through the rubber double-headed joints, a protective steel grating plate 63 supported by the steel wire rope 65 is formed.
[0029] The protective tube 66 is filled with semi-solid oily materials, such as grease, butter, etc., and sealed at both ends to further protect the steel wire rope 65 as a load-bearing component. The protective tube 66 is made of inert metal material, and the steel grating plate 63 should be galvanized and thermally sprayed to improve its anti-corrosion performance.
[0030] The directional words "up", "down", "inside", "outside", "side" and so on mentioned in this article are described based on Figure 1-Figure 3 These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation;
[0031] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.
[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An anti-corrosion protection device capable of monitoring a steel tie rod of a sheet pile wharf, wherein one end of the steel tie rod is fixedly connected to the breast wall of the sheet pile wharf, and the other end is fixedly connected to the guide beam of the sheet pile wharf, characterized in that: The anti-corrosion protection device includes an anti-corrosion metal tube and a monitoring unit. The steel pull rod is inserted into the anti-corrosion metal tube. The anti-corrosion metal tube is filled with an oily liquid wrapped around the outer surface of the steel pull rod, which is used to isolate the steel pull rod from harmful ions. The anti-corrosion metal tube is a multi-section pipe splicing structure, wherein the two sections of the pipe body located at the two ends are respectively embedded in the breast wall and the guide beam, and the ends are sealed in advance. The sections of the pipe body are linearly connected in series to form an internal sealed channel. An oil filling hole is provided on the anti-corrosion metal tube. The monitoring unit is externally placed on the sheet pile wharf, and its signal acquisition probe is inserted into the anti-corrosion metal tube, which is used to collect the oil pressure of the oily liquid in the anti-corrosion metal tube.
2. The anti-corrosion protection device capable of monitoring the steel tie rod of the sheet pile dock according to claim 1 is characterized by: The steel tie rod is eccentrically arranged in the anti-corrosion metal pipe, and the central axis of the steel tie rod is located directly below the central axis of the anti-corrosion metal pipe, so as to reserve a settlement amount.
3. The anti-corrosion protection device capable of monitoring the steel tie rod of the sheet pile dock according to claim 1 is characterized by: The anti-corrosion protection device also includes a steel grating plate, which has an inverted V-shaped structure and is arranged directly above the anti-corrosion metal pipe to screen sand and soil to fill the outer periphery of the anti-corrosion metal pipe. The steel grating plate is conformally supported and positioned by at least three steel wire ropes, and the steel wire ropes are tensioned between the breast wall and the guide beam.
4. The anti-corrosion protection device capable of monitoring the steel tie rod of the sheet pile dock according to claim 3 is characterized by: The steel wire rope is provided with an external protection tube, and the protection tube is filled with a semi-solid oily material.
5. The anti-corrosion protection device capable of monitoring the steel tie rod of the sheet pile dock according to claim 4 is characterized in that: The steel grating plate is formed by linearly splicing steel grating sub-plates, and equal lengths of protection pipe sections are welded on the steel grating sub-plates along the length direction. Adjacent steel grating sub-plates are spliced by connecting corresponding protection pipe sections via rubber double-head joints. The middle part of the rubber double-head joint is a clamping boss, and expansion joints with the same width as the clamping boss are formed between adjacent steel grating sub-plates.
6. The anti-corrosion protection device capable of monitoring the steel tie rod of the sheet pile dock according to claim 1 is characterized by: The anti-corrosion metal pipe is a double-layer metal composite pipe of an extruded integrally formed structure, which comprises an outer inert metal layer, a middle oily isolation layer and an inner carbon steel layer.