An inverted lifting platform for the construction of a quay front capping beam

Abstract

The present application relates to an inverted hoisting platform for the construction of a quay front capping beam, belonging to the technical field of quay construction, and includes cast-in-place piles, a fixing frame arranged on the water bottom, a support platform slidably arranged on the fixing frame, a capping beam mold frame for capping beam pouring, and multiple groups of driving mechanisms for driving the support platform to slide. The driving mechanism includes: a chain block, arranged on the fixing frame and used to drive the support platform to slide; a control component, arranged on the fixing frame and used to control the single-sliding distance of the support platform. The control component cooperates with the chain block to perform multiple short-distance slides on the support platform. In the present application, by fixedly installing the capping beam mold frame on the support platform, and through the mutual cooperation of multiple groups of chain blocks and the control component, the capping beam mold frame slides in a short-distance reciprocating cycle for multiple times, so that the capping beam mold stably moves down to the cast-in-place piles and is fixed, thereby facilitating the pouring and construction of the capping beam and improving the construction efficiency of the quay front capping beam.

Description

Technical Field

[0001] The present application relates to the technical field of wharf construction, and in particular to an inverted hoisting platform for the construction of a wharf front cap beam. Background Art

[0002] A cap beam refers to a cross beam provided at the top for supporting, distributing, and transferring. Currently, most construction methods of cap beams are to install a mold frame on top of cast-in-place piles, then install a steel reinforcement cage, and finally pour concrete to form the cap beam.

[0003] However, when constructing a cap beam at the wharf front, since part of the cap beam is underwater and it is not convenient to directly pour the cap beam, it is often necessary to first build a water stop curtain around the cap beam to block the water. After the water stop curtain is built, the water inside the water stop curtain needs to be drained before starting to build the cap beam mold frame. Finally, the cap beam is poured and built inside the cap beam mold frame. However, this method greatly prolongs the construction period of the cap beam and reduces the construction efficiency of the wharf front cap beam. Summary of the Invention

[0004] In order to improve the construction efficiency of the wharf front cap beam, the present application provides an inverted hoisting platform for the construction of a wharf front cap beam.

[0005] An inverted hoisting platform for the construction of a wharf front cap beam provided by the present application adopts the following technical solutions:

[0006] An inverted hoisting platform for the construction of a wharf front cap beam includes cast-in-place piles, a fixed frame provided on the bottom of the water and located at the position of the cast-in-place piles, a support platform slidably arranged on the fixed frame along the direction close to the cast-in-place piles, a cap beam mold frame provided on the support platform and used for cap beam pouring, and a plurality of groups of driving mechanisms provided on the fixed frame for driving the support platform to slide. The driving mechanisms include:

[0007] A chain block, which is provided on the fixed frame and used to drive the support platform to slide;

[0008] A control component, which is provided on the fixed frame and used to control the single-sliding distance of the support platform. The control component cooperates with the chain block to perform multiple short-distance slides on the support platform.

[0009] By adopting the above technical solutions, a fixed frame is built above the cast-in-place piles, the support platform is slidably arranged on the fixed frame, the cap beam mold frame is fixedly installed on the support platform, and through the mutual cooperation of a plurality of groups of chain blocks and the control component, the cap beam mold frame slides in a short distance and reciprocates cyclically for multiple times, so that the cap beam mold stably moves down to the cast-in-place piles and is fixed, thereby facilitating the pouring and construction of the cap beam and improving the construction efficiency of the wharf front cap beam.

[0010] Further, the control component includes:

[0011] Rebar, the rebar is arranged on the support platform and slidably arranged on the fixing frame;

[0012] Positioning nut, the positioning nut is threadedly connected to the rebar and abuts against the fixing frame for positioning, and the distance from the positioning nut to the fixing frame is adjusted to control the maximum distance of the single - time sliding of the support platform.

[0013] By adopting the above - mentioned technical solution, initially make the chain block bear force, then loosen the positioning nut on the rebar by a certain distance, and then multiple workers simultaneously pull multiple chain blocks to lower until the positioning nut abuts against the fixing frame to control the maximum distance of the single - time sliding of the support platform.

[0014] Furthermore, multiple groups of limiting components for limiting the maximum distance of the single - time movement of the positioning nut are arranged on the fixing frame. The limiting components include:

[0015] Multiple groups of sliding rods, the sliding rods are arranged on the fixing frame and are parallel to the axis of the threaded rod. Multiple groups of sliding rods are parallel to each other and are arranged around the rebar, and length scale values are arranged on the sliding rods;

[0016] Limiting blocks, the limiting blocks are slidably arranged on multiple groups of sliding rods and are used for limiting the maximum distance of the single - time movement of the positioning nut.

[0017] Locking bolts, the locking bolts are threadedly connected to the limiting blocks and abut against the sliding rods to lock the limiting blocks.

[0018] By adopting the above - mentioned technical solution, calculate the maximum distance of the single - time descent according to the final descent height and the number of descents of the rebar, and adjust the distance of the limiting blocks on the sliding rods accordingly. The distances from multiple groups of limiting blocks to the fixed rings are equal. Each time the position of the positioning nut is adjusted, only need to rotate the positioning nut and make the upper surface of the positioning nut abut against the lower surface of the limiting block, so as to quickly and accurately adjust the positioning nut, improving the adjustment efficiency and accuracy of the positioning nut.

[0019] Furthermore, multiple groups of the sliding rods are detachably arranged on the fixing frame through a fixing component. The fixing component includes:

[0020] Fixed rings, the fixed rings are sleeved on the rebar and abut against the fixing frame, and multiple groups of the sliding rods are arranged in a circumferential array on the fixed rings;

[0021] Connecting bolts, the connecting bolts pass through the fixed rings and are threadedly connected to the fixing frame.

[0022] By adopting the above technical solution, the fixing ring is sleeved on the deformed steel bar, the lower surface of the fixing ring abuts tightly against the fixing frame, multiple groups of sliding rods are arranged in a circumferential array on the fixing ring, and the connecting bolts pass through the fixing ring and are threadedly connected to the fixing frame, so as to detachably install the fixing ring on the fixing frame.

[0023] Furthermore, the fixing frame includes:

[0024] Multiple groups of support piles, and multiple groups of the support piles are arranged on the bottom of the water;

[0025] The upper cross beam, the upper cross beam is arranged on two adjacent groups of support piles, there are multiple groups of the upper cross beams, and multiple groups of the upper cross beams are arranged in parallel;

[0026] The upper longitudinal beams, the upper longitudinal beams are arranged on multiple groups of upper cross beams, there are multiple groups of the upper longitudinal beams, multiple groups of the upper longitudinal beams are arranged in parallel, and multiple groups of the driving mechanisms are arranged on the upper longitudinal beams at intervals.

[0027] By adopting the above technical solution, multiple groups of support piles support the upper cross beam, and multiple groups of upper cross beams support the upper longitudinal beams, which is convenient for multiple groups of driving components to drive the support platform to slide on the upper longitudinal beams.

[0028] Furthermore, the support platform includes:

[0029] The lower cross beam, the lower cross beam is arranged on the deformed steel bar, the lower cross beam is slidably connected to the upper longitudinal beam through multiple groups of deformed steel bars, there are multiple groups of the lower cross beams, and multiple groups of the lower cross beams are arranged in parallel;

[0030] The lower longitudinal beams, the lower longitudinal beams are arranged on multiple groups of lower cross beams, there are multiple groups of the lower longitudinal beams, multiple groups of the lower longitudinal beams are arranged in parallel, and multiple groups of the lower longitudinal beams are used to support the capping beam formwork rack;

[0031] Multiple groups of lower secondary beams, multiple groups of the lower secondary beams are arranged on the lower cross beam at intervals and are located between two groups of lower longitudinal beams, and multiple groups of the lower secondary beams are used to support the capping beam formwork rack.

[0032] By adopting the above technical solution, both ends of the lower cross beam are slidably installed on the upper longitudinal beam through two groups of deformed steel bars, the lower longitudinal beams are fixedly installed on multiple groups of lower cross beams, the lower longitudinal beams are used to support the capping beam formwork rack, and multiple groups of lower secondary beams are used to support the capping beam formwork rack assistantly, so as to facilitate the support and fixation of the capping beam formwork rack by the support platform, and drive the capping beam formwork rack to slide on the fixing frame through the driving mechanism.

[0033] Furthermore, a plurality of positioning holes for clamping and cooperating with the cast-in-place pile are formed on the support platform, two groups of additional support rods are arranged at the top of the cast-in-place pile, and a group of additional beams for supporting the upper longitudinal beam are arranged on the two groups of additional support rods.

[0034] By adopting the above technical solution, two groups of additional support rods on the cast-in-place pile pass through the positioning holes to support the additional beam, and the additional beam supports the upper longitudinal beam, so as to facilitate the cast-in-place pile to support and fix the upper longitudinal beam, improve the stability of the upper longitudinal beam, and further improve the support and fixing effect on the capping beam formwork rack.

[0035] Furthermore, the capping beam formwork rack includes:

[0036] A bottom formwork, which is arranged on the support platform. Circular holes that are engaged and matched with the cast-in-place piles are formed on the bottom formwork, and the circular holes are coaxially installed with the positioning holes;

[0037] Multiple side formworks, all of which are arranged on the bottom formwork, and the side formworks are hermetically connected between the side formworks and between the side formworks and the bottom formwork;

[0038] A steel bar cage, which is arranged on the bottom formwork and located between multiple side formworks.

[0039] By adopting the above technical solution, the bottom formwork is fixedly installed on the support platform. The multiple side formworks are hermetically connected between the multiple side formworks and between the multiple side formworks and the bottom formwork, and the connection part is sealed with foam glue. The steel bar cage is used to improve the strength of the capping beam. Through the drive of the drive mechanism, the capping beam formwork rack enters the water. When the capping beam formwork rack moves down to the designed position, the height of the side formwork is higher than the water surface, so that water cannot enter the capping beam formwork rack through the side formwork, which is convenient for the pouring of the capping beam.

[0040] Furthermore, multiple groups of auxiliary support frames for assisting in supporting the upper longitudinal beam are arranged on the bottom of the water. The auxiliary support frame includes two groups of auxiliary piles and an auxiliary cross beam. The auxiliary piles are arranged on the bottom of the water, and the auxiliary cross beam is arranged on the auxiliary piles and fixedly supports the upper longitudinal beam.

[0041] By adopting the above technical solution, the auxiliary columns are fixedly installed on the bottom of the water, and the auxiliary cross beam assists in supporting the upper longitudinal beam. Through the combined action of multiple groups of auxiliary support frames, the stability of the upper longitudinal beam is improved, which is convenient for the upper longitudinal beam to support and fix the capping beam.

[0042] Furthermore, after the support platform drives the capping beam formwork rack to slide to the designated position, the gap between the bottom formwork and the cast-in-place pile is sealed by a sealing component. The sealing component includes:

[0043] A sealing ring, which is arranged on the bottom formwork and is used to seal the gap between the bottom formwork and the cast-in-place pile;

[0044] A steel sealing bottom plate, which is arranged on the bottom formwork and is used to support the sealing ring.

[0045] By adopting the above technical solution, to facilitate the placement of the capping beam mold frame on the cast-in-place pile, the diameter of the round hole is larger than that of the cast-in-place pile. After the support platform drives the capping beam mold frame to slide to the designated position, the sealing ring seals the gap between the bottom formwork and the cast-in-place pile, and the steel sealing bottom plate fixedly supports the sealing ring to prevent the sealing ring from falling off when pumping water or pouring concrete into the capping beam mold frame, improving the sealing effect between the capping beam mold frame and the cast-in-place pile.

[0046] In summary, the present application includes at least one of the following beneficial technical effects:

[0047] By building a fixing frame above the cast-in-place pile, the support platform is slidably arranged on the fixing frame, and the capping beam mold frame is fixedly installed on the support platform. Through the mutual cooperation of multiple groups of chain blocks, deformed steel bars and positioning nuts, the capping beam mold frame slides in a short-distance reciprocating cycle multiple times, so that the capping beam mold stably moves down to the cast-in-place pile and is fixed. At the same time, through the mutual cooperation of the fixing ring, sliding rod and limiting block, the positioning nut can be accurately adjusted quickly, improving the adjustment efficiency and accuracy of the positioning nut; the gap between the bottom formwork and the cast-in-place pile is sealed by the sealing ring and the steel sealing bottom plate, reducing the probability of water entering the capping beam mold frame. Finally, through continuous pumping by the water pump, the water in the capping beam mold frame is reduced, facilitating the pouring construction of the capping beam, thereby improving the construction efficiency of the capping beam at the quay front. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 is a schematic structural diagram of the anti-hanging platform of the present application;

[0049] Figure 2 is a schematic structural diagram of the anti-hanging platform of the present application, mainly showing a part of the fixing frame, a part of the support platform, a limiting component, an auxiliary support frame and a driving mechanism;

[0050] Figure 3 is Figure 2 an enlarged schematic view of part A in

[0051] Figure 4 is a schematic structural diagram of the capping beam mold frame of the present application;

[0052] Figure 5 is a schematic structural diagram of the sealing component of the present application;

[0053] Figure 6 is an exploded schematic view of the sealing component of the present application.

[0054] Reference signs: 1, cast-in-place pile; 11, additional support rod; 12, additional beam; 2, fixing frame; 21, support pile; 22, upper cross beam; 23, upper longitudinal beam; 24, support block; 3, auxiliary support frame; 31, auxiliary pile; 32, auxiliary cross beam; 4, driving mechanism; 41, chain block; 42, control component; 411, deformed steel bar; 412, positioning nut; 5, support platform; 51, lower cross beam; 52, lower longitudinal beam; 53, lower secondary beam; 54, positioning hole; 6, capping beam formwork frame; 61, bottom formwork; 611, round hole; 62, side formwork; 63, steel reinforcement cage; 7, sealing component; 71, sealing ring; 72, steel sealing bottom plate; 8, limiting component; 81, sliding rod; 82, limiting block; 83, locking bolt; 9, fixing component; 91, fixing ring; 92, connecting bolt. Detailed implementation manners

[0055] The following further elaborates on this application Figures 1-6 in conjunction with the attached drawings.

[0056] An inverted lifting platform for capping beam construction at the front of a wharf is disclosed in an embodiment of this application.

[0057] Referring to Figure 1 , an inverted lifting platform for capping beam construction at the front of a wharf includes a cast-in-place pile 1, a fixing frame 2 arranged on the underwater bottom and at the position of the cast-in-place pile 1, a support platform 5 slidably arranged on the fixing frame 2 along the direction close to the cast-in-place pile 1, a capping beam formwork frame 6 arranged on the support platform 5 and used for capping beam pouring, and multiple groups of driving mechanisms 4 arranged on the fixing frame 2 for driving the support platform 5 to slide.

[0058] Referring to Figure 2, multiple groups of cast-in-place piles 1 are constructed at intervals on the bottom of the water. The multiple groups of cast-in-place piles 1 are used to support the quay front capping beam. A fixing frame 2 is arranged on the bottom of the water. The fixing frame 2 includes multiple groups of support piles 21, upper cross beams 22 and upper longitudinal beams 23. The support piles 21 are fixedly installed on the bottom of the water in the vertical direction and the upper parts are above the water surface. The support piles 21 are located on both sides of the cast-in-place piles 1. The upper cross beams 22 are fixedly installed on the upper surfaces of adjacent two groups of support piles 21. There are multiple groups of upper cross beams 22. The multiple groups of upper cross beams 22 are installed parallel to each other. The two ends of the multiple groups of upper cross beams 22 are fixedly connected to the operation platform, so as to facilitate the transportation of materials from the operation to the fixing frame 2. The upper longitudinal beams 23 are fixedly installed on the multiple groups of upper cross beams 22 through fixing bolts. There are multiple groups of upper longitudinal beams 23. The multiple groups of upper longitudinal beams 23 are installed parallel to each other. The two ends of the multiple groups of upper longitudinal beams 23 are flush with each other. The cast-in-place piles 1 in this embodiment are concrete cast-in-place piles 1 with an outer diameter of 2000 mm, and there are 4 groups of cast-in-place piles 1. The support piles 21 are steel pipe columns with an outer diameter of 630 mm and a wall thickness of 12 mm, and there are 10 groups of support piles 21. The upper cross beams 22 and the upper longitudinal beams 23 are both composed of two 45b I-beams welded together. There are 5 groups of upper cross beams 22 and 2 groups of upper longitudinal beams 23. The upper longitudinal beams 23 and the upper cross beams 22 are installed perpendicular to each other.

[0059] Refer to Figure 2 , multiple groups of auxiliary support frames 3 for auxiliary support of the upper longitudinal beams 23 are arranged on the bottom of the water. The auxiliary support frames 3 include two groups of auxiliary piles 31 and auxiliary cross beams 32. The auxiliary piles 31 are fixedly installed on the bottom of the water in the vertical direction and the upper parts are above the water surface. The auxiliary cross beams 32 are fixedly installed on the upper surfaces of the auxiliary piles 31. The two ends of the auxiliary cross beams 32 are respectively fixedly installed on the two groups of auxiliary piles 31. The upper surface of the auxiliary cross beams 32 abuts against the lower surface of the upper longitudinal beams 23. Through the action of the multiple groups of auxiliary support frames 3, the stability of the upper longitudinal beams 23 is improved. There are 4 groups of auxiliary support frames 3 in this embodiment. The auxiliary piles 31 are steel pipe columns with an outer diameter of 820 mm and a wall thickness of 12 mm. The auxiliary cross beams 32 are composed of two 45b I-beams welded together.

[0060] Refer to Figure 2 and Figure 3, the driving mechanism 4 includes a chain block 41 and a control component 42. One end of the chain block 41 is fixedly installed on the upper longitudinal beam 23, and the other end of the chain block 41 is fixedly installed on the support platform 5. The user adjusts the chain block 41 to make the support platform 5 slide away from the upper longitudinal beam 23; the control component 42 is arranged on the upper longitudinal beam 23 and is used to control the single-sliding distance of the support platform 5. The control component 42 cooperates with the chain block 41 to make the support platform 5 slide multiple times in short distances; the control component 42 includes a threaded steel bar 411 and a positioning nut 412. The threaded steel bar 411 is fixedly installed on the support platform 5, and the threaded steel bar 411 is slidably installed on the upper longitudinal beam 23. The length of the threaded steel bar 411 above the upper longitudinal beam 23 is greater than the sliding distance of the support platform 5 downward. A support block 24 is welded and installed on the upper surface of the upper longitudinal beam 23, and the threaded steel bar 411 passes through the support block 24; the positioning nut 412 is threadedly connected to the threaded steel bar 411, and the lower surface of the positioning nut 412 abuts against the upper surface of the support block 24 to fix and position the support platform 5. By adjusting the distance from the positioning nut 412 to the upper surface of the support block 24, the maximum single-sliding distance of the support platform 5 is controlled; the number of the chain block 41 and the control component 42 is mainly selected according to the support platform 5, the formwork support frame 6 of the cap beam, and the total weight of the cap beam multiplied by a safety factor of 1.3. In this embodiment, 12 chain blocks 41 are arranged at intervals, the model of the chain block 41 is 5-ton heavyweight, the threaded steel bar 411 is selected as 32 fine-rolled threaded steel bar 411 and a group is arranged at intervals of 3 meters, and the threaded steel bars 411 on the two upper longitudinal beams 23 are symmetrically arranged with each other.

[0061] Refer to Figure 1 and Figure 3 , a plurality of limiting components 8 for limiting the maximum distance of a single movement of the positioning nut 412 are arranged on the fixing frame. The limiting components 8 include a plurality of sliding rods 81, a limiting block, and a locking bolt 83. The sliding rod 81 is a cylindrical structure, and the plurality of sliding rods 81 are detachably arranged on the fixing frame 2 through a fixing component 9; the fixing component 9 includes a fixing ring 91 and a connecting bolt 92. The fixing ring 91 is a circular ring structure, the fixing ring 91 is sleeved on the threaded steel bar 411 and is coaxially arranged with the threaded steel bar 411. The lower surface of the fixing ring 91 abuts tightly against the fixing frame 2, and the plurality of sliding rods 81 are circumferentially arranged on the upper surface of the fixing ring 91. The axis of the sliding rod 81 is parallel to the axis of the threaded steel bar 411; the connecting bolt 92 passes through the fixing ring 91 and is threadedly connected to the fixing frame 2 to detachably install the fixing ring 91 on the fixing frame 2; in this embodiment, three sliding rods 81 are arranged.

[0062] Refer to Figure 1 and Figure 3, the limiting block 82 is in an annular structure and is slidably mounted on multiple groups of sliding rods 81. The bottom of the limiting block 82 is used to tightly position one end of the positioning nut 412 away from the fixing frame 2, so as to limit the maximum distance of a single movement of the positioning nut 412. A length scale value is set on the sliding rod 81 to measure the distance between the bottom of the limiting block 82 and the upper surface of the fixing frame; the locking bolt 83 is threadedly connected to the limiting block 82 and abuts against the sliding rod 81. By screwing the locking bolt 83 and abutting it against the sliding rod 81, the limiting block 82 is locked; during use, first fix multiple groups of fixing rings 91 at the designated positions on the fixing frame 2, and then calculate the maximum distance of a single descent according to the final descent height and the number of descents of the deformed steel bar 411. The distance of a single descent should not be too long and should be less than or equal to 100 millimeters, and the distance of the limiting block 82 on the sliding rod 81 is adjusted accordingly. The distances of multiple groups of limiting blocks 82 from the fixing ring 91 are equal. Finally, each time the position of the positioning nut 412 is adjusted, only need to rotate the positioning nut 412 and make the upper surface of the positioning nut 412 abut against the lower surface of the limiting block 82, so as to quickly and accurately adjust the positioning nut 412, improving the adjustment efficiency and accuracy of the positioning nut 412.

[0063] Refer to Figure 2 , the support platform 5 includes a lower cross beam 51, lower longitudinal beams 52 and multiple groups of lower secondary beams 53. The lower cross beam 51 is fixedly installed on the bottom of the deformed steel bar 411. The lower cross beam 51 is slidably connected to the upper longitudinal beam 23 through the deformed steel bar 411. Both ends of the lower cross beam 51 are slidably connected to two groups of upper longitudinal beams 23 through two groups of deformed steel bars 411. There are multiple groups of lower cross beams 51, and multiple groups of lower cross beams 51 are arranged in parallel and their two ends are flush with each other; the lower longitudinal beams 52 are fixedly installed on the upper surfaces of multiple groups of lower cross beams 51, and the lower longitudinal beams 52 are perpendicular to the lower cross beams 51. There are multiple groups of lower longitudinal beams 52, and multiple groups of lower longitudinal beams 52 are installed in parallel. Multiple groups of lower longitudinal beams 52 are used to fixedly support the bottom of the capping beam formwork frame 6; the lower secondary beams 53 are fixedly installed on the upper surfaces of the lower cross beams 51, and multiple groups of lower secondary beams 53 are installed at intervals between two groups of lower longitudinal beams 52. Multiple groups of lower secondary beams 53 and lower longitudinal beams 52 jointly support the capping beam formwork frame 6; in this embodiment, the lower cross beam 51 is composed of two 45b I-beams welded together, the lower longitudinal beam 52 is composed of two 20a I-beams welded together, and the lower secondary beams 53 are all composed of single 20a I-beams.

[0064] Refer to Figure 2 and Figure 4, a plurality of positioning holes 54 that are clamped and matched with the cast-in-place pile 1 are formed on the support platform 5. The diameter of the positioning hole 54 is much larger than the outer diameter of the cast-in-place pile 1. Two groups of additional support rods 11 are fixedly installed on the top of the cast-in-place pile 1. The two groups of additional support rods 11 are installed along the axis direction of the cast-in-place pile 1. The upper part of the additional support rod 11 is located above the water surface. A group of additional beams 12 that support all the upper longitudinal beams 23 are fixedly installed on the upper surfaces of the two groups of additional support rods 11. The additional support rods 11 and the additional beams 12 cooperate with each other to further improve the stability of the fixing frame 2.

[0065] Refer to Figure 2 and Figure 4 , the capping beam formwork support 6 includes a bottom formwork 61, a plurality of side formworks 62 and a steel bar cage 63. The bottom formwork 61 is made of a fixed-type steel formwork. Before the processing and production of the bottom formwork 61, the position points of the cast-in-place pile 1 are measured first, and the production is carried out according to the measurement results. Therefore, a set of bottom formwork 61 is separately matched for one capping beam; round holes 611 that cooperate with the cast-in-place pile 1 are formed on the bottom formwork 61. The round holes 611 are coaxially installed with the positioning holes 54. In order to facilitate the lowering, the diameter of the round hole 611 of the bottom formwork 61 is larger than the diameter of the cast-in-place pile 1; after the support platform 5 is installed, the corner points of the capping beam are measured and released, and then the bottom formwork 61 is hoisted and installed. After the bottom formwork 61 is rechecked, it is reinforced to fixedly install the bottom formwork 61 on the support platform 5; in this embodiment, the diameter of the round hole 611 of the bottom formwork 61 is 2100 mm, which is 100 mm larger than the diameter of the cast-in-place pile 1.

[0066] Refer to Figure 2 and Figure 4 , draw the capping beam steel bar side lines on the bottom formwork 61. First, weld two rows of support steel bars, place the two rows of main steel bars evenly, use a chain block 41 to lift the position of the main steel bar with a large span, pass the stirrups from the mid-span to both sides, uniformly adjust the spacing of the main steel bars and stirrups, lower the main steel bars to the design elevation, and finally carry out binding and fixing to make the steel bar cage 63 and fix it on the bottom formwork 61; a plurality of side formworks 62 are all fixedly installed on the bottom formwork 61 and foam rubber is used to seal the gaps between the formworks, so that the side formworks 62 are hermetically connected to the bottom formwork 61 and between the side formworks 62, so that the steel bar cage 63 is located between the bottom formwork 61 and the plurality of side formworks 62. In order to facilitate the subsequent removal of the side formwork 62, the side formwork 62 is polished and coated with a release agent in time before installation. At the same time, when the capping beam formwork support 6 is lowered to the design position, the height of the side formwork 62 is higher than the water surface, so that water cannot enter the capping beam formwork support 6 through the side formwork 62.

[0067] Refer to Figure 5 and Figure 6After the support platform 5 drives the cap beam mold frame 6 to slide to the specified position, the gap between the bottom template 61 and the bored pile 1 is sealed by the sealing assembly 7. The sealing assembly 7 includes a sealing ring 71 and a steel sealing bottom plate 72. The sealing ring 71 is fixedly installed on the bottom template 61 and pressed against the side wall of the bored pile 1. The sealing ring 71 is used to seal the gap between the bottom template 61 and the bored pile 1; the steel sealing bottom plate 72 is a circular ring structure, and the steel sealing bottom plate 72 is welded and installed on the bottom template 61 to support and fix the sealing ring 71.

[0068] Reference Figures 1-6 After the construction of the fixing frame 2 and the support platform 5 is completed, multiple fixing rings 91 are installed on the fixing frame. The maximum distance of a single descent is calculated according to the final descent height and the number of descents of the threaded steel bar, and the distance of the limiting block 82 on the sliding rod 81 is adjusted accordingly. The distances of multiple groups of limiting blocks 82 from the fixing ring 91 are equal. The following steps are used to construct the cap beam:

[0069] S1, first process the bottom template 61, after the bottom template 61 is processed, measure the corner points of the cap beam, then hang and install the bottom template 61 on the support platform 5, check the position of the bottom template 61 and then reinforce it, so as to fix the bottom template 61 on the support platform 5;

[0070] S2, after the installation of the bottom template 61 is completed, the additional support rod 11 and the additional beam 12 are fixedly installed on the cast-in-place pile 1, which further improves the stability of the fixed frame 2, and then the steel keel frame 63 is fixedly installed on the bottom template 61, and finally the side template 62 is installed on the bottom template 61, so as to realize the installation of the cap beam mold frame 6;

[0071] S3, adjusting the multiple groups of hand chain hoists 41, initially closing the hand chain hoists 41 until they stop after being stressed, at which time the distances from the support platform 5 to each part of the fixing frame 2 are equal, and the positioning nuts 412 on the threaded steel bars 411 are all pressed against the upper surface of the support block 24;

[0072] S4, loosen the positioning nut 412 on the threaded steel bar 411, and then rotate the positioning nut 412 so that the upper surface of the positioning nut 412 is pressed against the lower surface of the limiting block 82, and the upper surface of each group of positioning nuts 412 is pressed against the lower surfaces of multiple groups of limiting blocks 82;

[0073] S5, multiple construction workers simultaneously adjust the lower part of the hand chain hoist 41, so that the support platform 5 is smoothly lowered until the positioning nut 412 on the threaded steel bar 411 is pressed against the support block 24;

[0074] S6, repeat the steps of S3, S4, S5, and S6 in sequence;

[0075] Until the support platform 5 is lowered to the designed height, finally tighten the positioning nut 412 so that the support platform 5 and the capping beam formwork support 6 are fixedly installed on the cast-in-place pile 1. After the lowering is completed, measure and review the overall elevation, axis, and corner points; then the construction workers dive underwater to fixedly install the sealing ring 71 in the gap between the bottom formwork 61 and the cast-in-place pile 1 for sealing, and weld the steel sealing bottom plate 72 on the bottom formwork 61 to support the sealing ring 71; then use 2 water pumps to drain the water inside the capping beam formwork support 6. Observe the water leakage situation of the formwork during pumping, and direct the divers to carry out underwater plugging. When the water level height inside the formwork remains continuously stable within 20 cm, keep the water pumps pumping continuously, and start pouring concrete, finally realizing the pouring of the capping beam, so as to improve the construction efficiency of the capping beam at the front of the wharf.

[0076] The working principle of the embodiment of the present application is as follows:

[0077] By building a fixing frame 2 above the cast-in-place pile 1, the support platform 5 is slidably arranged on the fixing frame 2, and the capping beam formwork support 6 is fixedly installed on the support platform 5. Through the mutual cooperation of multiple groups of chain blocks 41, threaded steel 411, and positioning nuts 412, the capping beam formwork support 6 slides in a short-distance reciprocating cycle for multiple times, so that the capping beam formwork stably moves down to the cast-in-place pile 1 and is fixed. At the same time, through the mutual cooperation of the fixing ring 91, the sliding rod 81, and the limiting block 82, the positioning nut can be quickly and accurately adjusted, improving the adjustment efficiency and accuracy of the positioning nut; the gap between the bottom formwork 61 and the cast-in-place pile 1 is sealed by the sealing ring 71 and the steel sealing bottom plate 72, reducing the probability of water entering the capping beam formwork support 6. Finally, through continuous and uninterrupted pumping by the water pump, the water inside the capping beam formwork support 6 is reduced, facilitating the pouring and construction of the capping beam, so as to improve the construction efficiency of the capping beam at the front of the wharf.

[0078] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An inverted lifting platform for the construction of a quay front capping beam, characterized in that: It includes a cast-in-place pile (1), a fixing frame (2) arranged on the bottom of the water and located at the cast-in-place pile (1), a support platform (5) slidably arranged on the fixing frame (2) along the direction close to the cast-in-place pile (1), a capping beam mold frame (6) arranged on the support platform (5) and used for capping beam pouring, and multiple groups of driving mechanisms (4) are arranged on the fixing frame (2) for driving the support platform (5) to slide. The driving mechanism (4) includes: A chain block (41), the chain block (41) is arranged on the fixing frame (2) and used to drive the support platform (5) to slide; A control component (42), the control component (42) is arranged on the fixing frame (2) and used to control the single-sliding distance of the support platform (5). The control component (42) cooperates with the chain block (41) to perform multiple short-distance slides on the support platform (5); The control component (42) includes: A deformed bar (411), the deformed bar (411) is arranged on the support platform (5) and slidably arranged on the fixing frame (2); A positioning nut (412), the positioning nut (412) is threadedly connected to the deformed bar (411) and abuts against the fixing frame (2) for positioning. By adjusting the distance between the positioning nut (412) and the fixing frame (2), the maximum single-sliding distance of the support platform (5) can be controlled; Multiple groups of limiting components (8) are arranged on the fixing frame (2) for limiting the maximum distance of a single movement of the positioning nut (412). The limiting component (8) includes: Multiple groups of sliding rods (81), the sliding rods (81) are arranged on the fixing frame (2) and are parallel to the axis of the threaded rod. Multiple groups of sliding rods (81) are parallel to each other and arranged around the deformed bar (411), and length scale values are arranged on the sliding rods (81); A limiting block (82), the limiting block (82) is slidably arranged on multiple groups of sliding rods (81) and used to limit the maximum distance of a single movement of the positioning bolt; A locking bolt (83), the locking bolt (83) is threadedly connected to the limiting block (82) and abuts against the sliding rod (81) to lock the limiting block (82); The fixing frame (2) includes: Multiple groups of support piles (21), multiple groups of the support piles (21) are arranged on the bottom of the water; An upper cross beam (22), the upper cross beam (22) is arranged on two adjacent support piles (21). There are multiple groups of the upper cross beams (22), and multiple groups of the upper cross beams (22) are arranged parallel to each other; Upper longitudinal beams (23), the upper longitudinal beams (23) are arranged on multiple groups of upper cross beams (22). There are multiple groups of the upper longitudinal beams (23), and multiple groups of the upper longitudinal beams (23) are arranged parallel to each other. Multiple groups of the driving mechanisms (4) are arranged on the upper longitudinal beams (23) at intervals; Multiple positioning holes (54) that are clamped and matched with the cast-in-place pile (1) are opened on the support platform (5). Two groups of additional support rods (11) are arranged at the top of the cast-in-place pile (1), and a group of additional beams (12) for supporting the upper longitudinal beam (23) are arranged on the two groups of additional support rods (11); Multiple groups of auxiliary support frames (3) for auxiliary support of the upper longitudinal beam (23) are provided on the water bottom. The auxiliary support frame (3) includes two groups of auxiliary piles (31) and an auxiliary cross beam (32). The auxiliary piles (31) are provided on the water bottom, and the auxiliary cross beam (32) is provided on the auxiliary piles (31) and fixedly supports the upper longitudinal beam (23).

2. The counter-hanging platform for the construction of the quay-front capping beam according to claim 1, characterized in that: Multiple groups of the sliding rods (81) are detachably arranged on the fixing frame (2) through a fixing component (9). The fixing component (9) includes: A fixing ring (91) sleeved on the deformed bar (411) and abutted against the fixing frame (2). Multiple groups of the sliding rods (81) are arranged in a circumferential alignment on the fixing ring (91); A connecting bolt (92) passing through the fixing ring (91) and threadedly connected to the fixing frame (2).

3. The counter-hanging platform for the construction of the quay front capping beam according to claim 1, wherein: The support platform (5) includes: A lower cross beam (51) arranged on the deformed bar (411). The lower cross beam (51) is slidably connected to the upper longitudinal beam (23) through multiple groups of deformed bars (411). Multiple groups of the lower cross beams (51) are provided, and multiple groups of the lower cross beams (51) are arranged in parallel; Lower longitudinal beams (52) arranged on multiple groups of the lower cross beams (51). Multiple groups of the lower longitudinal beams (52) are provided, and multiple groups of the lower longitudinal beams (52) are arranged in parallel. Multiple groups of the lower longitudinal beams (52) are used to support the capping beam formwork rack (6); Multiple groups of lower secondary beams (53) arranged at intervals on the lower cross beam (51) and located between two groups of the lower longitudinal beams (52). Multiple groups of the lower secondary beams (53) are used to support the capping beam formwork rack (6).

4. The counter-hanging platform for the construction of the quay front capping beam according to claim 1, characterized in that: The capping beam formwork rack (6) includes: A bottom formwork (61) arranged on the support platform (5). A round hole (611) for clamping and cooperating with the cast-in-place pile (1) is formed on the bottom formwork (61), and the round hole (611) is coaxially installed with the positioning hole (54); Multiple side formworks (62) all arranged on the bottom formwork (61). The side formworks (62) are hermetically connected between the side formworks (62) and the bottom formwork (61); A steel bar cage (63) arranged on the bottom formwork (61) and located between multiple side formworks (62).

5. The counter-hanging platform for the construction of the quay front capping beam according to claim 4, characterized in that: After the support platform (5) drives the capping beam formwork rack (6) to slide to a specified position, the gap between the bottom formwork (61) and the cast-in-place pile (1) is sealed by a sealing component (7). The sealing component (7) includes: A sealing ring (71) arranged on the bottom formwork (61) and used to seal the gap between the bottom formwork (61) and the cast-in-place pile (1); A steel sealing bottom plate (72) arranged on the bottom formwork (61) and used to support the sealing ring (71).

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