CN110194250B - Integral sliding method for dock wall of floating dock - Google Patents
Integral sliding method for dock wall of floating dock Download PDFInfo
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- CN110194250B CN110194250B CN201910476830.4A CN201910476830A CN110194250B CN 110194250 B CN110194250 B CN 110194250B CN 201910476830 A CN201910476830 A CN 201910476830A CN 110194250 B CN110194250 B CN 110194250B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C1/00—Dry-docking of vessels or flying-boats
- B63C1/02—Floating docks
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Abstract
The invention discloses a method for integrally sliding a dock wall of a floating dock, which comprises the steps of firstly arranging an anti-toppling support on the dock wall, then arranging a dock wall opening at the bottom of the dock wall, then arranging a jacking reinforcing support at the top of the dock wall opening, and arranging a cloud rail and a heavy load vehicle at the bottom of the dock wall opening; cutting the dock wall to separate the dock wall from the floating box after the heavy-duty vehicle is pre-jacked, moving the dock wall to an appointed place by utilizing the movement of the heavy-duty vehicle, and then welding the dock wall and the floating box; according to the method, two kinds of construction equipment, namely jacking construction equipment and sliding construction equipment are combined, so that the construction period is shortened, the construction steps are reduced, the construction controllability is improved, the high safety degree of integration of construction is improved, and visual construction is realized by utilizing an integrated control method such as a PLC (programmable logic controller).
Description
Technical Field
The invention relates to a method for sliding a dock wall, in particular to a method for integrally sliding a dock wall of a floating dock.
Background
The floating dock is a floating structure which can float on the water surface and move and consists of dock walls on two sides and a bottom floating box. In order to meet the requirement of product diversification, 30 ten thousand tons of floating docks need to be upgraded and reformed, the two sides of the port and the starboard of the floating box are widened by 5 meters respectively, and the two sides of the port and the starboard of the dock wall are integrally transversely moved by 5 meters in each direction. According to the characteristics, in order to ensure the safety and reliability of the moving process and the jacking falling back process, a jacking moving scheme aiming at the dock wall needs to be designed, the general mode is that a jacking jack and sliding equipment are matched to complete a project, the jacking moving method and the sliding moving method are respectively operated, the time is long, the operation procedures are multiple, and the potential safety hazard is large.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for integrally sliding a dock wall of a floating dock so as to solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for integrally sliding a dock wall of a floating dock is characterized in that the floating dock comprises a horizontally arranged buoyancy tank (the buoyancy tank is of a box-type structure and floats in seawater when in use), the top surface (or a buoyancy tank deck) of the buoyancy tank is rectangular, and two long sides of the top surface of the buoyancy tank (namely the outer sides of the port side and the starboard side of the floating dock) are respectively and vertically connected with a dock wall (one bottom side is correspondingly connected with one dock wall, so that two dock walls are arranged in total); each dock wall further comprises an inner dock wall and an outer dock wall which are parallel to each other (in a strict sense, the outer dock wall is welded on the length of the buoyancy tank, but the inner dock wall and the outer dock wall are close to each other and form a complete dock wall, so that the dock wall can be considered to be integrally welded on the length of the buoyancy tank), and the inner dock wall is positioned on the inner side of the buoyancy tank relative to the outer dock wall; the top of each docking wall is also provided with a crane which can move along the top edge of the docking wall, and the method comprises the following steps:
s1: expanding and repairing the widened buoyancy tanks to two sides along the width direction of the buoyancy tanks (namely the widened buoyancy tanks are expanded and repaired to two sides perpendicular to the dock wall in practice); two lengths (no longer two lengths, but parallel to the two lengths) of the widened buoyancy tank (the top surface of the buoyancy tank or the deck of the buoyancy tank) are respectively and vertically connected with a dock wall limiting baffle plate parallel to the dock wall (as the dock wall is longer, 9 dock wall limiting plates can be arranged on each side to form a dock wall limiting plate in specific implementation);
s2: an anti-toppling support in a right-angled triangle configuration is arranged at a right-angled included angle between the inner dock wall and the inner side (the inner side refers to the side close to the center of the buoyancy tank) of the buoyancy tank, one right-angled edge of the anti-toppling support is tightly attached to the inner dock wall, and the other right-angled edge of the anti-toppling support is tightly attached to a roller trolley; the roller trolley is radially fixed on a trolley track; the trolley track is tightly attached to the buoyancy tank and is vertical to the dock wall; the distance between the roller trolley and the inner dock wall is larger than the distance between the outer dock wall and the dock wall limiting baffle on the same side (the dock walls are distributed on two sides of the floating box, and the dock wall limiting baffles are also respectively positioned on two sides of the floating box and on the same side, and the distance is obtained by the same side;
s3: rigidly fixing a crane on one point of a dock wall to prevent the crane from moving, and enabling a suspension arm of the crane to be located in a plane where the dock wall is located;
s4: a plurality of dock wall openings penetrating through the inner dock wall and the outer dock wall are arranged along the side wall of the bottom of the dock wall; the bottom of the dock wall opening is communicated with the buoyancy tank;
s5: a reinforcing channel steel is annularly attached to the side wall of the bottom of the dock wall; the reinforcing channel steel is wound at the opening of the dock wall along two sides and the top edge of the opening of the dock wall;
s6: a jacking reinforcing support is arranged on the top close to the opening of the dock wall, penetrates through the opening of the dock wall, and is connected with the inner dock wall and the outer dock wall at two ends respectively;
s7: a cloud rail is fixedly arranged at the bottom of each dock wall opening, is fixed on the buoyancy tank and penetrates through the dock wall opening; the cloud rails extend out of two ends of the opening of the dock wall, and one end of the cloud rails extends to the dock wall limiting baffle on the same side;
s8: placing a heavy vehicle (generally, placing the heavy vehicle on one side close to the center of the buoyancy tank) on each cloud rail, and moving the heavy vehicle into the dock wall opening along the cloud rails;
s9: synchronously lifting the heavy-duty vehicle until the top of the heavy-duty vehicle is in close contact with the jacking reinforcing bracket;
s10: cutting the junction of the dock wall and the buoyancy tank until the dock wall and the buoyancy tank are completely separated;
s11: controlling the heavy-duty truck to synchronously rise until the interaction force between the dock wall and the buoyancy tank disappears;
s12: controlling the heavy-duty vehicle loading dock wall to move towards the dock wall limiting baffle on the same side until the outer dock wall reaches the position of the dock wall limiting baffle (which is naturally the dock wall limiting baffle on the same side just spoken);
s13: lowering the heavy-duty truck until the dock wall contacts the buoyancy tank; welding a dock wall and a buoyancy tank;
s14: continuing to lower the heavy-duty vehicle until the heavy-duty vehicle is not contacted with the jacking reinforcing bracket any more;
s15: and withdrawing the heavy-duty vehicle from the cloud rail, and dismantling the cloud rail.
Preferably, the trolley track comprises a strip-shaped bottom plate which is tightly attached to the buoyancy tank and a strip-shaped top plate which is placed above the bottom plate in parallel, and the top plate and the bottom plate are connected through side plates at two sides (but not two ends); the middle axis of the top plate is provided with a slender strip opening, the roller trolley is integrally arranged between the top plate and the bottom plate, and the width of the slender strip opening is smaller than that of the roller trolley, so that the radial movement of the roller trolley is limited.
Preferably, the jacking reinforcing bracket comprises an upper plate, a lower plate and a supporting plate connected between the upper plate and the lower plate; the upper plate is welded and fixed on reinforced T-shaped steel of the dock wall, and two ends of the lower plate are respectively welded and fixed on the inner dock wall and the outer dock wall.
Preferably, in S3, the crane is secured to a secure anchor point of the floating dock.
Preferably, in S4, the dock wall openings are symmetrically disposed in the horizontal direction with respect to a midpoint of a bottom edge of the dock wall, and a distance between two adjacent dock wall openings is the same, but two dock wall openings are additionally disposed below the crane fixed point.
Preferably, the height change and the load change of the heavy-duty vehicle and the movement of the heavy-duty vehicle on the cloud rail are controlled through the PLC system in the whole process.
Preferably, the translation speed of the dock wall is set to be 24 cm/min.
Preferably, in S11, the resultant loading force of the heavy loading cars is loaded in stages according to 20%, 40%, 60%, 70%, 80%, 90% and 100% of the weight of the dock wall.
Preferably, in S12, after the synchronous control heavy-duty vehicle translates 1 meter first, the heavy-duty vehicle is stopped, and after the synchronism, load change, and inertia distance after parking are observed, the heavy-duty vehicle continues to be controlled to translate.
Compared with the jacking and sliding separation mode in the prior art, the jacking and sliding separation method has the advantages that two construction devices of jacking and sliding are combined into one, the construction period is shortened, the construction steps are reduced, the construction controllability is improved, the high safety integration of construction is improved, and visual construction is realized by utilizing an integrated control method such as PLC (programmable logic controller) and the like: jacking load, jacking displacement and sliding displacement in the construction process can be conveniently displayed on the center console, and orderly operation is realized; the anti-dumping tool realizes bidirectional anti-dumping of the dock wall and ensures construction safety; the dock wall which is ultrahigh, overlong and small in width is integrally translated in a floating state for the first time, and safety in jacking and sliding processes is guaranteed through calculation; designing a temporary jacking bracket according to the bearing capacity and the structural appearance of the heavy-duty vehicle to ensure the strength load required by jacking the heavy-duty vehicle; the accuracy of the dock wall is ensured to be within a controllable range in the jacking and sliding processes through integral reinforcement and internal reinforcement; through calculation, the docking crane is sealed, so that the time and cost for dismantling the docking crane before the start of the project and reinstalling the docking crane after the completion in the conventional method are reduced; the invention can reduce the construction period, which is 1/5 of the conventional construction period.
Drawings
FIG. 1 is a side view of a floating dock;
FIG. 2 is a top plan view of the floating dock;
FIG. 3 is a side view of the anti-toppling brace;
FIG. 4 is an enlarged view of the trolley rail of FIG. 3;
FIG. 5 is a view taken in the direction A of FIG. 4;
FIG. 6 is a schematic view of the dock wall opening as viewed along direction A in FIG. 3;
FIG. 7 is a schematic illustration of cloud rail laying in plan view;
FIG. 8 is a view from the direction B of FIG. 7;
FIG. 9 is a view in the direction of C in FIG. 7;
fig. 10 is a cross-sectional view (including the buoyancy tank) taken along line D-D in fig. 6.
In the figure, 1, a buoyancy tank, 2, a dock wall, 21, an inner dock wall, 22, an outer dock wall, 23, a dock wall limit baffle, 3, a crane, 31, an anti-platform anchoring point, 4, an anti-toppling support, 41, a roller trolley, 42, a trolley track, 43, a limit opening, 44, a bottom plate, 45, a top plate, 46, a side plate, 47, a long and thin strip opening, 5, a dock wall opening, 51, a cloud rail, 52, a heavy truck, 53, a reinforcing channel steel, 6, a jacking reinforcing support, 61, an upper plate, 62, a lower plate, 63, a supporting plate, 64 and an elbow plate.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
Referring first to fig. 1 and 2, a floating dock includes a horizontally disposed buoyancy tank 1, the buoyancy tank 1 is rectangular (visible in a top view), and a dock wall 2 is vertically connected to each of two lengths of the buoyancy tank 1 as a bottom side; each dock wall 2 further comprises an inner dock wall 21 and an outer dock wall 22 which are parallel to each other, the inner dock wall 21 is located on the inner side of the buoyancy tank 1 relative to the outer dock wall 22, and the inner dock wall 21 and the outer dock wall 22 are vertically welded on the buoyancy tank 1; the top of each dock wall 2 is also provided with a crane 3 which can move along the top edge of the dock wall 2 (a floating dock can maintain a ship, the crane 3 performs lifting work in the process of maintaining the ship, and the crane 3 moves through a travelling mechanism, a rail and the like); the method comprises the following steps (the following steps are applicable to both sides of the dock wall 2):
s1: expanding and repairing the widened buoyancy tank 1 towards two sides along the width direction of the buoyancy tank 1; two dock wall limiting baffles 23 are vertically connected to two lengths of the widened buoyancy tank 1 respectively; (the aim of each later step is to cut the original dock wall 2, move the cut wall to the position of a dock wall limit baffle 23 and then weld the wall)
S2: as shown in fig. 3, an anti-toppling support 4 in a right-angled triangle configuration is arranged at an inner right-angled corner between the inner dock wall 21 and the buoyancy tank 1, one right-angled side of the anti-toppling support 4 is tightly attached and fixed (can be welded) to the inner dock wall 21, and the other right-angled side is tightly attached and fixed (can be hinged) to a roller trolley 41; the roller carriages 41 are radially fixed to a carriage track 42; the trolley track 42 is tightly fixed (can be welded) on the buoyancy tank 1, is vertical to the dock wall 2 and extends to the position of the inner dock wall 21; the distance between the roller trolley 41 and the inner dock wall 21 is greater than the distance between the outer dock wall 22 and the dock wall limiting baffle 23 on the same side (this requirement is required because the roller trolley 41 is carried by the subsequent dock wall 2 and the trolley track 42 can only be laid at the position of the dock wall 2 at most); for each dock wall 2, 9 such anti-toppling brackets 4 may be provided, as shown in fig. 2;
for the carriage rail 42, the following embodiments may be adopted: as shown in fig. 4 and 5, the trolley rails 42 are in the form of temporary steel frames, each temporary steel frame includes an elongated bottom plate 44 closely fixed to the buoyancy tank 1 and an elongated top plate 45 disposed above the bottom plate 44 in parallel, and the top plate 45 and the bottom plate 44 are connected by side plates 46 at two sides; a slender opening 47 is formed on the central axis of the top plate 45, the roller trolley 41 is integrally arranged between the top plate 45 and the bottom plate 44, and the width of the slender opening 47 is smaller than that of the roller trolley 41 so as to limit the radial movement of the roller trolley 41;
in this way, if the dock wall 2 is tilted inwards, the roller trolley 41 and the anti-toppling bracket 4 can play a supporting role; if the dock wall 2 is tilted outwards, the roller trolley 41 is limited by the top plate 45 so as to provide a downward force to prevent dumping;
in addition, a plurality of limiting openings 43 can be arranged on the trolley track 42 (temporary steel frame) along the radial direction, and when the roller trolley 41 needs to be fixed in the axial direction, the pin plates are respectively inserted into the limiting openings 43 at the front and the rear of the roller trolley 41, so that the roller trolley 41 can be fixed between the two pin plates;
s3: rigidly fixing a crane 3 on a point on the dock wall 2 to prevent the crane from moving, and enabling a suspension arm of the crane 3 to be positioned in a plane where the dock wall 2 is positioned; this fixed point selects the anti-dock anchorage point 31 (the location of which is shown in figure 2) at the time of the original floating dock design; the movement of the crane 3 depends on a running mechanism and a rail at the bottom of the crane, the crane 3 can be controlled to be fixed by rigidly fixing the running mechanism and the rail, and the sealing form can be determined according to the load provided by calculation and the structural characteristics of the crane 3 and the top of the dock wall 2, for example, a bolt mode and the like are adopted;
s4: as shown in fig. 6, a plurality of dock wall openings 5 penetrating through an inner dock wall 21 and an outer dock wall 22 are arranged along a bottom side wall of the dock wall 2 (only a few are shown in fig. 6, and 28 are adopted in a more specific embodiment); the bottom of the dock wall opening 5 is communicated with the buoyancy tank 1; for the opening positions of the dock wall openings 5, the dock wall openings 5 may be symmetrically placed in the horizontal direction relative to the midpoint of the bottom edge of the dock wall 2 (as shown in fig. 2), and the distances between two adjacent dock wall openings 5 are the same, but two dock wall openings 5 are additionally arranged below the fixed point of the crane 3 (so that the distances between several adjacent dock wall openings 5 at the fixed point of the crane 3, that is, the bottom of the anchor point 31 of the defense platform, are different).
S5: still as shown in fig. 6, a reinforcing channel 53 is attached around the bottom side wall of the dock wall 2; the reinforcing channel steel 53 may be linearly arranged, but needs to be wound along two sides and the top edge of the dock wall opening 5 at the dock wall opening 5; the reinforcing channel steel 53 has the effect that after subsequent cutting, the dock wall 2 loses the connection with the buoyancy tank 1, so that the buoyancy tank 1 loses the fixation of the overall shape of the dock wall, wave deformation is possible to be generated, and the reinforcing channel steel 53 can reduce the wave deformation of the dock wall 2 by the rigidity of the reinforcing channel steel 53;
s6: as shown in fig. 10, a jacking reinforcing support 6 is arranged close to the top of the dock wall opening 5, the jacking reinforcing support 6 penetrates through the dock wall opening 5, and two ends of the jacking reinforcing support are respectively connected with an inner dock wall 21 and an outer dock wall 22; the jacking reinforcement support 6 is required to be arranged because a hollow area exists between the inner dock wall 21 and the outer dock wall 22, when a subsequent heavy duty car 52 loads the dock wall 2 in the dock wall opening 5, the heavy duty car is only contacted with the bottom edges of the inner dock wall 21 and the outer dock wall 22, and after the jacking reinforcement support 6 is arranged, the whole jacking reinforcement support 6 is loaded to form a surface;
the jack-up reinforcing brackets 6 may take the following embodiments:
the jack-up reinforcing bracket 6 includes an upper plate 61, a lower plate 62, and a support plate 63 connected between the upper plate 61 and the lower plate 62; the upper plate 61 is welded and fixed to reinforcing T-shaped steel of the dock wall 2 (which is a reinforcing structure of the dock wall 2 and is attached to the inner walls of the inner dock wall 21 and the outer dock wall 22 in fig. 10, and is not obviously shown in the drawing), and two ends of the lower plate 62 are respectively welded and fixed to the inner dock wall 21 and the outer dock wall 22; a toggle plate 64 is further arranged between the upper plate 61 and the inner walls of the inner dock wall 21 and the outer dock wall 22;
s7: as shown in fig. 7, a cloud rail 51 (a cloud-shaped rail, which is a rail for a heavy vehicle 52) is fixedly arranged at the bottom of each dock wall opening 5, and the cloud rail 51 is fixed to the buoyancy tank 1 and penetrates through the dock wall opening 5; the cloud rails 51 extend out of two ends of the dock wall opening 5, and one end of the cloud rails extends to the dock wall limiting baffle 23 on the same side; after the cloud rail 51 is laid, leveling by using cement or placing a gasket in a gap between the cloud rail 51 and the ground, so that the leveling of a subsequent translation route is realized;
s8: as shown in fig. 7 to 9, a heavy vehicle 52 is placed on each cloud rail 51, and the heavy vehicle 52 is moved into the dock wall opening 5 along the cloud rail 51 (the heavy vehicle 52 can be placed inside the cloud rail 51 first and then the heavy vehicle 52 is moved into the dock wall opening 5)
S9: synchronously lifting the heavy-duty truck 52 until the top of the heavy-duty truck 52 is tightly contacted with the jacking reinforcing support 6 (preventing the cut dock wall 2 from suddenly falling);
s10: cutting the boundary of the dock wall 2 and the buoyancy tank 1 until the dock wall 2 and the buoyancy tank 1 are completely separated (the separation means that the connection of the dock wall 2 and the buoyancy tank 1 on mechanics disappears, namely the dock wall 2 can be completely separated from the buoyancy tank 1 after being lifted, but the dock wall 2 and the buoyancy tank 1 are not in contact at the moment);
s11: controlling the heavy duty truck 52 to rise synchronously until the interaction force between the dock wall 2 and the buoyancy tank 1 disappears; a hierarchical loading mode can be adopted in the process: the bearing resultant force of the heavy duty vehicle 52 is loaded in a grading manner according to 20%, 40%, 60%, 70%, 80%, 90% and 100% of the weight of the dock wall 2; after each loading is finished, each observation point reflects the structural conditions of the heavy duty car 52 and the dock wall 2 in time; each measuring point reflects the measured data in time; the data are submitted to a site construction design group for analysis and comparison; recognizing the current working state and deciding the next operation; after jacking to confirm that all contact points of the dock wall 2 and the buoyancy tank 1 are separated (more safely, a small gap, such as 60mm, is formed between the contact points and the buoyancy tank 1, and the interaction force is certainly disappeared at the moment), stopping for 15 minutes, confirming the stress state of the dock wall 2, loading data of a heavy load vehicle 52, and deciding to start translation by a field command group after the load regulating system of the buoyancy tank 1 has no problem;
s12: controlling the heavy loading vehicle 52 to load the dock wall 2 to move towards the dock wall limiting baffle 23 on the same side until the outer dock wall 22 reaches the position of the dock wall limiting baffle 23; in the translation process of the dock wall 2, the heavy-duty vehicles 52 are synchronously started and firstly translated for 1 meter, after the synchronization of each vehicle and the change of the load are observed to confirm that the technical requirements are met, the inertia distance after parking is recorded, translation is continued, the bearing condition of the heavy-duty vehicles 52 is adjusted at any time according to the change of the load until the heavy-duty vehicles are translated to the specified position (namely, the position of the dock wall limit baffle 23) of the widened buoyancy tank 1, and the precision is confirmed to meet the requirements. And recording the bearing data of each heavy duty car 52 in the translation process, and carrying out load adjustment according to load adjustment calculation of the buoyancy tank 1 and the field translation state so as to ensure the translation stability of the dock wall 2. The translation speed of the dock wall 2 can be set to be 24cm/min, and the translation frequency is 10 Hz.
S13: lowering the heavy-duty truck 52 until the dock wall 2 contacts the buoyancy tank 1; welding a dock wall 2 and a buoyancy tank 1;
s14: continuing to lower the heavy-duty vehicle 52 until the heavy-duty vehicle 52 is not in contact with the jacking reinforcing bracket 6 any more;
s15: the heavy load vehicle 52 is evacuated from the cloud rail 51, and the cloud rail 51 is removed.
The dock wall 2 on the other side is moved by the same method as described above. The height change of the heavy duty vehicle 52 and the movement of the heavy duty vehicle on the cloud rail 51 are controlled through a PLC system in the whole process.
The following is an embodiment of an upgrading and reconstruction process of a 30-ten-thousand-ton floating dock, wherein two sides of a port and a starboard of a floating box 1 are widened by 5 meters respectively, and the two sides of the port and starboard dock walls 2 in each direction are integrally transversely moved by 5 meters. The total length of the dock wall 2 to be moved is 320 meters, the height of the dock wall is 22 meters, the width of the dock wall is 5 meters, and the weight of the dock wall is 5500 tons; in accordance with the above principles, in combination with the practical situation, there are the following more detailed procedures and methods (perhaps somewhat different from the above general scheme):
wherein, the calculation of the traction force (taking the crane 3 as an example): referring to the handbook of mechanical design (ISBN: 9787111292258), the maximum rolling friction coefficient during translation was selected to be 0.03.
The power is provided by 28 heavy-duty vehicles 52 (heavy-duty transport vehicles), and according to the specifications of the heavy-duty vehicles 52, the power provided by each heavy-duty vehicle 52 is 20T;
according to the structural form of the heavy-duty vehicle 52 (adopting three-stage straight gear transmission) and the mechanical design manual (ISBN: 9787111292258), the transmission efficiency eta is 0.8
The total driving force F is 28 multiplied by 20 multiplied by 0.8 is 448T;
maximum static friction force F ═ W × F ═ 5500 × 0.03 ═ 165T
The traction force meets the requirements.
And (4) conclusion: the driving force safety coefficient n is more than or equal to 2, and the driving force safety coefficient meets the requirement.
And (3) calculating jacking load: the self weight G of the dock wall 2 is 5500t, 28 active heavy-duty vehicles 52 are adopted in the translation, the F-top of each vehicle is 400t, and the Sigma-F-top is 400t multiplied by 28 is 11200 t.
The safety factor n ═ sigma F forehead/G ═ 11200/5500 ═ 2.04
And (4) conclusion: the safe load coefficient is more than or equal to 2, and meets the requirement.
Adopt 28 jacking to remove integrative heavy-duty car 52, the construction method includes:
a. preparation and inspection before construction: the method comprises the steps of dock wall 2 structure strengthening inspection, dock wall 2 anti-tilt support inspection, heavy duty vehicle 52 transportation route inspection, dock wall 2 crane 3 sealing inspection, heavy duty vehicle 52 and cloud rail 51 installation accuracy confirmation, heavy duty vehicle 52 and dock wall 2 jacking part confirmation, dock wall 2 water-transfer capacity and subsequent water pump power supply (external power connection and external pump supply), heavy duty vehicle 52 no-load test (a hydraulic system, a cable connection and a control system), a dock wall 2 in-place installation position inspection line and buoyancy tank 1 structure stress condition;
b. installing an anti-toppling support 4: installing a track on the buoyancy tank 1 and installing an anti-toppling support 4 according to the requirements of a drawing;
c. welding a tool (namely a reinforcing channel steel 53) for the integral strength at the lower opening (namely the bottom side wall) and the opening (namely the dock wall opening 5) of the dock wall 2;
d. opening a repetition vehicle 52 to translate a process hole (namely a dock wall opening 5) according to a drawing;
e. welding a tool (namely a jacking reinforcing bracket 6) for jacking a heavy-duty vehicle 52;
f. welding a dock wall limiting baffle 23;
g. constructing a dock wall 2, a floating dock inspection line and a reference line;
h. center line of the drawing track (i.e., center line of cloud track 51):
marking the central line of the cloud track 51 by using a total station or a theodolite, and ensuring that the central lines of the 26 longitudinal movement tracks are parallel; extending 26 track lines to the widened buoyancy tank 1, and using theodolite to measure and ensure that the extension lines are basically coincident with the central line of the strong structure of the buoyancy tank 1 (within the error range of calculation);
i. laying a cloud rail 51, checking the precision, and sealing with a deck of the floating dock after the adjustment meets the requirements;
j. placing a heavy-duty vehicle 52, connecting power lines and signal lines of the 26 placed trolleys according to a standard connection mode, and checking all connection points to ensure safety;
k. the heavy-duty vehicles 52 are jacked to a certain load, the cutting of the dock wall 2 is started, the cutting sequence is carried out according to a related process scheme, the fact that the dock wall 2 is completely separated from the buoyancy tank 1 is determined after cutting, the accuracy and the deformation conditions of the dock wall 2 and the buoyancy tank 1 are measured, the jacking displacement sensors and the walking displacement sensors are arranged on 28 (two additional heavy-duty vehicles are arranged below the crane) vehicles 52, the displacement data of the dock wall 2 and the buoyancy tank 1 at the 28 points can be accurately measured, the accuracy states of the whole buoyancy tank 1 and the dock wall 2 are obtained through analysis of the data, and the accuracy of the buoyancy tank 1 and the dock wall 2 can be adjusted through adjustment of different jacking displacements of the 28 vehicles. And then jacking the dock wall 2, and simultaneously monitoring the synchronism of jacking at 28 points. When the distance between the dock wall 2 and the buoyancy tank 1 is 60mm, the jacking is finished and the lock is locked;
l, translating the dock wall 2 at a translation speed of 24cm/min and at a translation frequency of 10 Hz; the 28 heavy-duty vehicles 52 are synchronously started, firstly, the vehicles are translated for 1 meter, after the synchronism of each vehicle and the load change are observed to confirm that the technical requirements are met, the inertia distance after the vehicles are stopped is recorded, the vehicles are continuously translated, the bearing conditions of the heavy-duty vehicles 52 are adjusted at any time according to the load change until the vehicles are translated to the specified position of the widened buoyancy tank 1, and the accuracy is confirmed to meet the requirements;
m, reducing the heavy load car 52 to meet the precision requirement of the dock wall 2 and the buoyancy tank 1, sealing and welding the dock wall 2 (according to a related process scheme), continuously reducing the heavy load car 52, separating from the dock wall 2, withdrawing the heavy load car 52 according to a reverse sequence, dismantling the cloud rail 51, and completing the movement of the dock wall 2;
n, welding a dock wall 2 and a buoyancy tank 1, and recovering the original structure;
and o, moving the dock wall 2 on the other side by the same method.
Wherein, the cutting of dock wall 2 includes:
(1) when the load of the heavy loading vehicle 52 is unloaded to 1% after the trial jacking work of the dock wall 2 is completed, starting to cut the bottom structure of the dock wall 2 (cutting according to the cutting process requirement of the dock wall 2);
(2) after the dock wall 2 is cut, comprehensively checking once to confirm that the dock wall 2 is completely cut;
(3) and the person in charge of cutting the dock wall 2 informs the field command group to complete all cutting.
The trial jacking of the dock wall 2 comprises the following steps:
(1) jacking a heavy duty car 52 cylinder to a reinforced structure part (namely a jacking reinforced bracket 6) in the dock wall 2;
(2) 20%, 40%, 60%, 70%, 80%, 90% and 100% of the load is loaded in a grading way according to the proportion, and each time of loading, the following procedures are required to be carried out and well recorded:
the operation is as follows: carrying out graded loading according to requirements to enable the stress of the oil cylinder to reach a specified value;
and (4) observation: each stress point can reflect the observation situation in time; the structural reinforcement part and the heavy-duty vehicle 52 change;
checking: displaying the numerical value of each stress point, and comparing the difference between actual data and theoretical set data;
and (3) analysis: analyzing according to data displayed by a field observation, inspection and operation screen;
and (3) decision making: and recognizing the current working state, meeting the technical safety requirement and deciding the next operation.
Jacking of the dock wall 2 and translation of the dock wall 2 comprise:
(1) jacking is carried out according to the following procedures and well recorded:
the operation is as follows: carrying out graded loading according to requirements to enable the stress of the heavy-duty vehicle 52 to reach a preset value;
and (4) observation: each observation point reflects the structural conditions of the heavy duty car 52 and the dock wall 2 in time;
measurement: each measuring point needs to make measurement work carefully to reflect the measurement data in time;
checking, namely converging the data to a field construction design group for analysis and comparison;
and (3) decision making: recognizing the current working state and deciding the next operation;
(2) stopping jacking for 15 minutes when jacking is 100mm (confirming that all contact points of the dock wall 2 and the buoyancy tank 1 are separated), confirming the stress state of the dock wall 2, loading data of a heavy load vehicle 52, and deciding to start translation of a field command group after a load adjusting system of the buoyancy tank 1 has no problem;
(3) after jacking observation, translation can be carried out if no problem exists; in the translation process, the bearing data of each heavy-duty vehicle 52 is recorded; synchronously landing the dock wall 2 according to the corresponding inspection line after the translation is in place;
(4) if an error occurs when the dock wall 2 lands, alignment correction is required to be carried out to ensure that the dock wall 2 is installed in place;
(5) after the dock wall 2 is translated in place, a field construction organization immediately seals the dock wall 2, and welding of structural members is carried out;
(6) the buoyancy tank 1 load adjusting system is used for adjusting load according to the buoyancy tank 1 load adjusting calculation and the field translation state so as to ensure the translation stability of the dock wall 2;
(7) after the dock wall 2 is sealed, the heavy duty vehicle 52 and the cloud rail 51 can be removed, and the dock wall 2 on the other side is prepared for translation.
The arrangement of the heavy vehicle 52 is: 28 heavy vehicles 52 are arranged on the single-side dock wall 2, the distance between 1 to 13 vehicles is 12.5 meters, the distance between 14 to 26 vehicles is 12.5 meters, the distance between 13 to 14 vehicles is 10 meters, 27 vehicles are additionally arranged between 13 to 14 vehicles and 28 vehicles are additionally arranged between 14 to 15 vehicles (with the dock crane in the translation process) at the corresponding position of the dock crane.
Wherein, main frock includes:
(1) the dock wall 2 is provided with holes and reinforced scheme: the opening position of the dock wall 2 is the same as the laying position of the heavy duty car 52, and the inner and outer dock walls 22 and the inner structure need to be opened to form through holes.
(2) 52 jacking position supports of the heavy-duty vehicle and reinforcement:
(3) the dock wall 2 is integrally reinforced and the transverse frame is transversely reinforced: after the dock wall 2 and the buoyancy tank 1 are cut, a lower opening is in a large opening state, a hole needs to be formed in the position where the heavy duty car 52 is installed, the overall strength of the dock wall 2 is influenced to a certain extent, and back beams are additionally arranged at the position of the hole and the edge of the lower opening of the dock wall 2.
(4) And (3) sealing the crane: the crane 3 is stopped at the appointed position of the dock wall 2, the suspension arm is placed along the dock wall 2,
(5) the anti-toppling bracket 4: in order to ensure the safety and reliability during construction, 9 groups of anti-toppling brackets 4 are additionally arranged on the inner side of the dock wall 2, the brackets are installed before cutting, one side of each bracket is fixed with the dock wall 2, the other side of each bracket slides on a temporary steel beam of the buoyancy tank 1, and the tool can realize double-side anti-toppling; the transverse baffle plates are provided with holes with the distance of 1000mm on vertical plates at two sides of the roller trolley 41 according to actual conditions, and the transverse baffle plates are inserted to assist the heavy-duty vehicle 52 to brake if an emergency occurs in the walking process;
(6) dock wall limit baffle 23 and peripheral construction platform: a temporary limiting plate and a peripheral construction platform are arranged at the moving position end point of the dock wall 2 to ensure the stability and precision of translation;
(7) sealing the cloud rail 51;
(8) constructing a temporary hole: the inner and outer dock walls 22 are provided with temporary fabrication holes according to construction and safe escape.
The heavy vehicle 52 transportation system is composed of a heavy vehicle 52, a cloud-shaped track (cloud rail 51), a power control system and a monitoring system. The control mode is as follows: the PLC system is used for controlling the synchronous operation of the 28 heavy-duty vehicles 52, the single heavy-duty vehicle can also independently operate to realize integral displacement and positioning, and the working state of each heavy-duty vehicle 52 can be displayed on the control screen.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (7)
1. A method for integrally sliding a dock wall of a floating dock is characterized in that the floating dock comprises a horizontally placed buoyancy tank, the top surface of the buoyancy tank is rectangular, and two dock walls are vertically connected with the bottom surfaces of the two lengths of the top surface of the buoyancy tank; each dock wall comprises an inner dock wall and an outer dock wall which are parallel to each other, and the inner dock wall is located on the inner side of the buoyancy tank relative to the outer dock wall; the top of each docking wall is also provided with a crane which can move along the top edge of the docking wall, and the method is characterized by comprising the following steps:
s1: the buoyancy tank is expanded and repaired to two sides along the width direction of the buoyancy tank; two lengths of the widened top surface of the buoyancy tank are vertically connected with a dock wall limiting baffle plate parallel to the dock wall;
s2: an anti-toppling support in a right-angled triangle configuration is arranged at an inner right-angled included angle between the inner dock wall and the buoyancy tank, one right-angled edge of the anti-toppling support is tightly attached to the inner dock wall, and the other right-angled edge of the anti-toppling support is tightly attached to a roller trolley; the roller trolley is radially fixed on a trolley track; the trolley track is tightly attached to the buoyancy tank and is vertical to the dock wall; the distance between the roller trolley and the inner dock wall is larger than the distance between the outer dock wall and the dock wall limiting baffle on the same side; the trolley track comprises a strip-shaped bottom plate and a strip-shaped top plate, wherein the strip-shaped bottom plate is tightly fixed on the buoyancy tank in a clinging manner, the strip-shaped top plate is placed above the bottom plate in parallel, and the top plate and the bottom plate are connected through side plates on two sides; a slender strip opening is formed in the central axis of the top plate, the roller trolley is integrally arranged between the top plate and the bottom plate, and the width of the slender strip opening is smaller than that of the roller trolley, so that the radial movement of the roller trolley is limited;
s3: rigidly fixing the crane on a point on the dock wall to prevent the crane from moving, and enabling a suspension arm of the crane to be located in a plane where the dock wall is located;
s4: a plurality of dock wall openings penetrating through the inner dock wall and the outer dock wall are arranged along the side wall of the bottom of the dock wall; the bottom of the dock wall opening is communicated with the buoyancy tank;
s5: a reinforcing channel steel is annularly attached to the side wall of the bottom of the dock wall; the reinforcing channel steel is wound at the opening of the dock wall along two sides and the top edge of the opening of the dock wall;
s6: a jacking reinforcing support is arranged on the top of the dock wall opening in a close fit mode, penetrates through the dock wall opening, and is connected with the inner dock wall and the outer dock wall at two ends respectively;
s7: a cloud rail is fixedly arranged at the bottom of each dock wall opening, is fixed on the buoyancy tank and penetrates through the dock wall opening; the cloud rails extend out of two ends of the opening of the dock wall, and one end of the cloud rails extends to the dock wall limiting baffle on the same side;
s8: placing a heavy vehicle on each cloud rail, and moving the heavy vehicles into the dock wall opening along the cloud rails;
s9: synchronously lifting the heavy-duty vehicle until the top of the heavy-duty vehicle is in close contact with the jacking reinforcing bracket;
s10: cutting the junction of the dock wall and the buoyancy tank until the dock wall is completely separated from the buoyancy tank;
s11: controlling the heavy-duty car to synchronously rise until the interaction force between the dock wall and the buoyancy tank disappears;
s12: controlling the heavy-duty car to carry the dock wall to move to a dock wall limiting baffle on the same side until the outer dock wall reaches the position of the dock wall limiting baffle;
s13: lowering the heavy-duty car until the dock wall contacts the buoyancy tank; welding the dock wall and the buoyancy tank;
s14: continuing to lower the heavy-duty vehicle until the heavy-duty vehicle is not contacted with the jacking reinforcing bracket any more;
s15: and withdrawing the heavy-duty vehicle from the cloud rail, and dismantling the cloud rail.
2. The method of integrally sliding a floating dock wall according to claim 1, wherein the jacking reinforcing support comprises an upper plate, a lower plate, and a support plate connected between the upper plate and the lower plate; the upper plate is welded and fixed on reinforced T-shaped steel of the dock wall, and two ends of the lower plate are respectively welded and fixed on the inner dock wall and the outer dock wall.
3. The method of integrally sliding a wall of a floating dock according to claim 1, wherein the crane is fixed to a dock anchor of the floating dock in S3.
4. The method for integrally slipping the dock wall of the floating dock according to claim 1, wherein the height change and the load change of the heavy-duty vehicle and the movement of the heavy-duty vehicle on the cloud rail are controlled by a PLC system in the whole process.
5. The method of integrally sliding a floating dock wall according to claim 1, wherein the translation speed of the dock wall is set to 24 cm/min.
6. The method of claim 1, wherein the resultant load of the heavy vehicles is loaded in steps of 20%, 40%, 60%, 70%, 80%, 90%, and 100% of the weight of the dock wall in S11.
7. The method for integrally slipping the dock wall of the floating dock according to claim 1, wherein in S12, the heavy-duty vehicle is controlled to synchronously shift for 1 m, then the heavy-duty vehicle is stopped, and the heavy-duty vehicle is controlled to continuously shift after the synchronism of the heavy-duty vehicle, the load change and the inertia distance after parking are observed.
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| SU1240683A1 (en) * | 1984-02-20 | 1986-06-30 | Войсковая часть 27177-б | Method of increasing width of floating dock afloat |
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