Maritime work rail and construction method thereof

Abstract

The invention relates to the technical field of maritime work track construction, and particularly discloses a maritime work track and a construction method thereof. A ship lift platform track is arranged on a ship lift platform; the transfer area track is arranged in the transfer area, and the transition area track is connected to the ship lift platform track through the cross turnout; the connecting piece is connected to a transfer area rail; the cross turnout adjusts front and back errors, and the connecting piece adjusts elevation errors. According to the method, the mounting position of the transfer area rail is reversely deduced through the ship lift platform rail, and various transition pieces are used at the transition area rail after mounting to adjust errors, so that the butt joint precision is ensured, and the construction quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of marine engineering track construction, and in particular to a marine engineering track and a construction method thereof. Background Art

[0002] There are many lifting equipments in the shipyard, such as portal cranes, gantry cranes, bridge cranes, quay cranes, ship lifts, etc. These equipments have the characteristics of large mass, heavy load, large impact, frequent movement, easy corrosion, high track installation precision, etc. A100 heavy-duty track is often used as its ground track. The installation of this part of the ground track has the characteristics of wide distribution area, long distance, crisscrossing, and high adjustment precision.

[0003] The traditional track construction method is to embed the first phase anchor bolts first, and after the first phase concrete is poured, clean the track groove and install the track steel pad. The pad is installed on the nut of the anchor bolt, with a width of about 100mm. After adjusting the elevation of the track pad through the nut on the anchor bolt, the track pressure plate is installed on the anchor bolt. Generally, due to the small size of the steel pad, the bottom surface of the track is directly in contact with the steel pad. Since the adjustment nut of the anchor bolt is located at the bottom of the steel pad, the operating space is small and it is inconvenient to adjust the track. Secondly, the track pad is small in width, and the first phase embedded anchor bolts are independent structures. They are not connected to each other as a whole, which will cause uneven force on the track due to the uneven contact surface, affecting the service life of the track.

[0004] At the track joints, there are generally structural forms such as welding, beveling, and butting. If beveling, butt-jointing, etc. are used, the width of the gap at the joint will increase due to the thermal expansion and contraction of the track. In order to maintain the stability of the track and increase the holding force of the track, track pressure plates are often added at the joints. However, the traditional track pressure plates are directly installed on the first-phase concrete embedded bolts, and the embedding accuracy is poor, resulting in a mismatch between the embedded bolts and the track joint positions, resulting in an increase in track cuts and material waste. At the same time, if additional pressure plates are needed, the traditional method can only be achieved by adding chemical bolts and steel pads, which is cumbersome to operate.

[0005] Large-scale track installation involves multiple installation areas. Track connection is required in different installation areas. Considering the measurement error and cumulative error of installation, it is necessary to select the installation reference point and the order of track installation. Therefore, a marine engineering track structure and a construction method thereof are proposed. Summary of the invention

[0006] The object of the present invention is to provide a marine engineering track and a construction method thereof, so as to solve the problem that during the installation process, there are errors in the installation of tracks in different installation areas and it is difficult to align the tracks.

[0007] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows: A marine engineering track structure, comprising a transfer area track, a transition area track and a ship lift platform area track; The ship lift platform area track is arranged on the ship lift platform; Transfer area track, set in the transfer area, The transition area track is connected to the ship lift platform area track through a connector; and connected to the transfer area track through a cross turnout; The cross turnout adjusts the front and rear errors, and the connecting parts adjust the elevation errors.

[0008] As a further technical solution of the above scheme, the connecting member includes a left plate, a connecting rod and a right plate; the left plate is connected to the transfer area track, and the right plate is connected to the lift platform area track; the left end of the connecting rod is hinged to the left plate, and the right end of the connecting rod is connected to the right plate.

[0009] The present invention also provides a method for constructing a marine track, comprising the following steps: Step S1, pre-embedding the corrugated casing, burying the corrugated casing when pouring the first phase concrete structure; Step S2, check the size of the track groove, clean it, and then lay the steel pad along the track groove for construction; Step S3, after adjusting the track position, install the pressure plate and perform epoxy secondary grouting; Step S4, applying asphalt soil material on the exposed surface and side of the track and track groove; after the construction is completed, pouring plain concrete in the track groove to wrap the track accessories; Step S5, checking the elevation of the concrete surface on both sides of the track groove and grinding it; Step S6, after laying the transfer area track and the ship lift platform area track, use the transition area track to connect the transfer area track and the ship lift platform area track respectively, and use the cross turnout and connectors to adjust the track center distance, elevation difference and straightness.

[0010] As a further technical solution of the above solution, in step S1, the corrugated casing is first pre-buried, and the corrugated casing is buried when the first-phase concrete structure is poured.

[0011] Compared with the prior art, the present invention has the following advantages and beneficial effects: in the present invention, the installation position of the transfer area track is reversed by the ship lift platform area track, and after installation, a variety of transition pieces are used at the transition area track to adjust the error, thereby ensuring the docking accuracy and improving the construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the track installation of the present invention.

[0013] Figure 2Schematic diagram of the position of the corrugated sleeve during track installation.

[0014] Figure 3 A schematic diagram of the structure of the connecting parts.

[0015] Figure 4 It is a construction flow chart.

[0016] The meanings of the numbers in the figure are: transfer area track-1; transition area track-2; ship lift platform area track-3; left plate-41; connecting rod-42; right plate-43; corrugated sleeve-5; pressure plate-6. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention, so as to have a further understanding of the concept of the present invention, the technical problems solved, the technical features constituting the technical scheme and the technical effects brought about.

[0018] like Figure 1~Figure 4 As shown, a marine track structure and a construction method thereof include the following steps: Step 1, preparation for construction: Since it is a track construction, the number of tracks is large and they intersect with each other, it is necessary to consider the later construction sequence at the same time to maximize the construction efficiency. First, the site will decompose and produce process drawings according to the design drawings. According to the length, location, classification and other factors of each track, the construction sequence and the construction team to which it belongs will be confirmed by number. Temporary track storage areas will be planned at intervals to reduce the workload of secondary transportation. At the same time, a batch of tooling needs to be prefabricated to speed up the positioning and pre-embedding of the corrugated casing 5.

[0019] During the construction of the track beam, it is necessary to pre-embed drainage pipes on both sides of the track beam as a channel for rainwater to disperse in the track groove in the later stage. Generally, a pair of rainwater pipes are arranged every 50m. The traditional track installation only needs to be laid out and installed according to the provided reference points. When the number of tracks is too large, the cumulative error will cause the overall deviation of the track. In this solution, the ship lift platform area track 3 is installed first, and the track setting of the transfer area is reversed through the ship lift platform area track 3.

[0020] Step 2, pre-embedding of corrugated sleeves: Since the corrugated sleeves 5 are arranged independently and equidistantly, there is no direct contact between them. If a single corrugated sleeve 5 is buried, a lot of time will inevitably be wasted. The present invention adopts customized tooling to bury the corrugated sleeves 5 in batches before pouring the first phase of concrete to improve construction efficiency. By changing the track installation structure, adding corrugated sleeves, changing the first phase anchor bolts to the second phase grouting, the fault tolerance range is expanded, and it is convenient for later installation and adjustment. By laying the track steel pad under the track, the track stiffness is improved, its force is evenly distributed, and its service life is extended. The track pad is adjusted by replacing the original nut lifting adjustment method with an external adjustment bolt, which is easy to operate and quick to construct. By adding a layer of rubber pad between the steel pad and the bottom surface of the track, the track friction is increased. By arranging track pressure plates 6 on the steel pads, the limitation that the traditional process can only install the pressure plate 6 at the anchor bolt position is eliminated. If additional pressure plates are needed, it is only necessary to directly weld the required track pressure plates at the required position on the full-length steel pad. In order to solve the problem of electrochemical corrosion on the rails, zinc-rich coating is used for protection, and electrical composite grease is applied to the rail joints and bolts to improve environmental conditions and reduce the impact of corrosive media.

[0021] The problem of water accumulation in the track groove is solved by pre-burying drainage pipes in the track groove. After the track is installed, asphalt is applied to the track and adjacent surfaces to isolate and protect the track, making it easier to remove and replace the track later. At the same time, plain concrete is covered on it to protect track bolts, pressure plates and other components from erosion by marine salt spray, thus extending the track life.

[0022] like Figure 2 As shown in the figure, the tooling for pre-embedded concrete is a woodworking template, which is cut into long strips according to the size of the track groove, and 1-2cm gaps are reserved on both sides for air leakage. On the wooden board, the circular holes of the corrugated sleeve are marked and cut according to the equidistant positions, so that they are arranged in rows. Then the corrugated sleeve is penetrated through the circular hole, with the head exposed about 10mm, and is bonded to the wooden board with epoxy glue. Put the whole into the track groove, adjust and fix the elevation and position of the wooden board, and then the position of this batch of corrugated sleeves can be confirmed. Use adhesive tape to seal the holes on the top of the corrugated sleeve to prevent concrete from entering. After the concrete is poured, the epoxy glue can be removed and the wooden template with holes can be disassembled for reuse.

[0023] Step 3, according to the construction drawings in step 1, mark the positioning centerline position points of each track on the first phase of the cast surface, and also use the sample punch to punch out the points on the steel pads, with a point interval of 1m. Mark the centerline and sample punch points on the track tread to facilitate later installation and adjustment. When laying the steel pads, first follow the track groove and line up the relevant steel pads on the concrete floor. Adjust the bolt hole position on the steel pads and install the adjustment bolts to make the exposed length of the adjustment bolts basically consistent. At both ends of the track, tighten and straighten with 0.2mm steel wire. Drop the steel pads and use a square ruler to align the sample punch points and steel wires so that they coincide. By adjusting the length of the adjustment bolts, level the steel pads so that each steel pad is on the same elevation plane and the center axis coincides with the design value. Insert the anchor bolts into the installation holes and put on the nuts. In each corrugated casing, first pour epoxy mortar at half the volume of the corrugated casing to fix the anchor bolts. After the epoxy mortar is strong, readjust the center and elevation parameters of the steel plate, and then tighten the nuts of the anchor bolts to fix the position of the steel plate. It should be noted that when the steel plate is laid, it needs to be forcibly disconnected when it encounters the expansion joint of the concrete structure.

[0024] Step 4: Lay the rubber pad on the steel pad. The rubber pad joint and the steel pad joint need to be staggered by more than 500mm. The center of the rubber pad coincides with the center of the steel pad. Similarly, at the expansion joint of the concrete structure, the rubber pad needs to be forcibly disconnected.

[0025] Step 5: The rails are transported from the temporary storage area to the rail groove attachment in advance, and pre-assembled on the concrete floor along the length of the groove, with a certain welding groove gap reserved between the rail joints. After pre-assembly confirming the length of the last rail at the end, cut out the required rail length for standby use.

[0026] Step 6: After the track length is confirmed, grind the track joint to keep it smooth and rust-free. Then install the mold and perform thermite welding. After welding, grind it smooth. UT needs to check the joint weld. If it meets the requirements, proceed to the next step. If it does not meet the requirements, re-cut, grind, and re-weld until it meets the required position.

[0027] After orbital welding is completed, the anti-corrosion coating repair can be completed at the joint location.

[0028] Step 7: After the rail welding and installation are completed, the rail clamp installation can begin. During the installation of the rail clamp, the total station tracks and checks the center position and elevation of the rail. If there is any deviation, adjust it at any time. In the initial stage, there is no need to tighten the rail clamp bolts, just slightly tighten them. After all adjustments are in place, they can be tightened and the specified torque applied.

[0029] Step 8: After the rail pressure plate is installed, the entire track can be inspected for damage to the coating, such as bumps and breakages. After grinding, repair according to the normal repair process. The anti-corrosion coating uses epoxy zinc-rich paint for protection. Electrical composite grease is applied to contact locations such as rail bolts and pressure plates to reduce electrochemical corrosion and extend the life of the track.

[0030] Step 9: After the track is inspected, epoxy mortar can be used to fill the gaps between the track and the track groove, and between the steel pad and the track groove. During the mortar flow, pay attention to check whether the flow is smooth, whether there is improper filling, gap obstruction, etc. In order to prevent the epoxy from expanding and contracting due to temperature, which may cause cracking of the epoxy after grouting and affect the safety of track operation, the epoxy grouting under the track pad must be reserved in sections with expansion joints.

[0031] Step 10: Apply asphalt coating evenly on the exposed surface and sides of the entire track and track groove. All parts including track pressure plates, track bolts, pads, etc. need to be coated, and the sides and bottom of the track groove also need to be coated. The role of applying asphalt coating is, on the one hand, waterproofing and water-isolating; on the other hand, it is convenient for later replacement of the track, making it easier to remove the plain concrete above it without damaging the track-related accessories.

[0032] Step 11: After the asphalt coating is completed, pour plain concrete in the track groove to wrap the track accessories. Use C8 / 10 concrete, and the pouring height can be 5mm higher than the pressure plate bolts. Pay attention to vibration during pouring, and make sure the top surface is smooth after pouring.

[0033] Step 12: Check the elevation of the concrete surface on both sides of the track groove. If there are any high points, grind them to avoid jamming of the walking mechanism during operation.

[0034] Step 13, after installing the lift platform area track 3 and the transfer area track 1 according to the above steps, install the transition area track 2. Since the lift steel structure platform is a large-scale motion structure, its on-site installation needs to give priority to the precise coordination with other equipment in the lift system, and the fixings of the track on the lift steel structure platform have been welded to the platform structure when the lift platform is produced in sections in the factory. The margin for adjustment of the track installation to connect with the tracks on other structures is very small. Therefore, the baseline for large-scale track installation needs to be based on the theoretical design value of the track on the lift steel structure platform, extending to the lift wharf structure and the land transfer area, and using this as a reference to locate the track installation positions of various parts of the lift wharf and the land transfer area. Since the construction order of the structures to which the large-scale tracks are attached is the civil engineering structure of the land transfer area, the civil engineering structure of the ship lift terminal, and the steel structure platform of the ship lift, in order to ensure the accuracy of the track installation, the track installation order should usually be the track on the platform of the ship lift steel structure, the track on the civil engineering terminal of the ship lift, and the track in the land transfer area. In order to speed up the track installation progress and save construction costs, the installation order is the track in the land transfer area, the track on the platform of the ship lift steel structure, and the track on the civil engineering terminal of the ship lift.

[0035] In actual installation, there are 8 tracks on the ship lift platform. The position of the pressure plate has been positioned when the platform is made. Only the straightness needs to be adjusted on site. The center of the 8 tracks of the ship lift platform is verified on the south side of the track in the ship lift platform area. At the same time, it is used as a reference to reverse the reference point of the transfer area according to the coordinates after on-site installation, and the difference between the two is compared. The reference point of the transfer area is confirmed and constructed completely according to the theoretical design value, but the ship lift platform may cause deviations from the theoretical value due to the construction of the dock at sea, after multiple coordinate conversions, and construction errors. It is necessary to check the difference between the two, record the relevant data and make compensation in the transition area.

[0036] When compensation is performed in the transition zone, first, a cross-shaped transition piece such as a cross turnout is used at the left end, such as the Chinese patent with application number 202310248422.X. A square protrusion is set at the center of the top surface of the turnout body. The height of the square protrusion is consistent with the depth of the wheel groove, and the width of the square protrusion is consistent with the width of the top of the track; each side wall of the turnout body is provided with a socket recess that matches the shape of the track cross section, and the end of the track is inserted into the socket recess and pressed against the edge of the turnout body, which can make up for the error of the upper and lower XY axis planes; a connector and other upper and lower swinging parts are set at the right end. When used, the left plate 41 and the right plate 43 are connected to the track respectively. Since the connecting rod 42 is hinged, the connection between the left plate and the right plate is completed after rotation, which satisfies the adjustment in the Z direction, that is, the elevation can be adjusted. At the same time, in addition to using a cross turnout, conditional swinging parts can also be used in other positions, which can satisfy the adjustment in the XY direction and the adjustment in the Z direction in a small range as a buffer. For example, in the Chinese patent application number 202310441357.2, base one and base two are fixed on the concrete foundation with anchor bolts, and an expansion joint distance equal to the distance between the concrete foundations is left between base one and base two, and the expansion joint distance can be adjusted according to the site of use. The connecting rail adopts a socket-type structure to insert base one and base two, and a semicircular groove is left in the middle position of base one for installing the shaft of the tapered turnout. The turnout shaft seal assembled on the tapered turnout is locked by a countersunk screw, so that the tapered turnout and base one are axially connected, and the error of the XY axis plane is adjusted; another example is the Chinese patent application number 202310248572.0, which includes an expansion joint one set in the bottom concrete The first connecting pad and the second connecting pad are connected to each other through a tooth-groove structure, and an adjustment gap is left. The convex teeth of the first connecting pad are also provided with fixing holes, and the connecting bolts connect the fixing holes and the leveling pad. The first connecting pad and the second connecting pad are also fixedly connected to the bottom concrete through anchor bolts, and the adjustment gap between the connecting pad and its convex teeth is used as a reserve for the synchronous thermal expansion and contraction distance, so as to achieve the purpose of satisfying the smooth running of the wheels and ensuring that the track and the concrete foundation will not be damaged due to temperature changes, avoiding the pulling and resistance of the connecting pad structure, and ensuring the integrity of the concrete structure. In addition to adjusting the track error, the above-mentioned transition piece can also alleviate the error of the concrete expansion joint caused by settlement, and further ensure the installation and alignment accuracy.

[0037] The terms “connection” and “fixation” mentioned in the description of the present invention may refer to fixed connection, processing and forming, welding or mechanical connection. The specific meanings of the above terms in the present invention shall be understood according to the specific circumstances.

[0038] In the description of the present invention, the terms "center", "upper", "lower", "horizontal", "inside", "outside", etc., which indicate the orientation or position relationship, are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying a specific orientation that the device or element referred to must have, and therefore cannot be understood as a limitation on the present invention.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A marine engineering track, characterized in that: It includes a transfer area track (1), a transition area track (2) and a ship lift platform area track (3); The ship lift platform area track (3) is arranged on the ship lift platform; The transfer area track (1) is arranged in the transfer area, The transition area track (2) is connected to the ship lift platform area track (3) via a connector; and is connected to the transfer area track (1) via a cross switch; The cross turnout is used to adjust the front and rear errors, and the connecting parts are used to adjust the elevation errors.

2. A marine track according to claim 1, characterized in that: The connecting member comprises a left plate (41), a connecting rod (42) and a right plate (43); the left plate (41) is connected to the transfer area track (1), and the right plate (43) is connected to the ship lift platform track (3); the left end of the connecting rod (42) is hinged to the left plate (41), and the right end of the connecting rod (42) is connected to the right plate (43).

3. A method for constructing a marine track according to claim 1, characterized in that: The following steps are involved: Step S1, check the size of the track groove, clean it and lay the steel pad along the track groove; Step S2, after adjusting the position of the track, installing the pressing plate (6) and performing secondary epoxy grouting; Step S3, applying asphalt soil material on the exposed surface and side of the track and track groove; after the construction is completed, pouring plain concrete in the track groove to wrap the track accessories; Step S4, checking the elevation of the concrete surface on both sides of the track groove and grinding it; Step S5, after the transfer area track (1) and the ship lift platform area track (3) are laid, the transition area track (2) is used to connect the transfer area track (1) and the ship lift platform area track (3) respectively, and the cross turnout and connecting parts are used to adjust the track center distance, elevation difference and straightness.

4. A method for constructing a marine track according to claim 3, characterized in that: In step S1, the corrugated casing (5) is first pre-buried, and the corrugated casing (5) is buried when the first-phase concrete structure is poured.

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