Construction method of circular detachable steel-concrete bottom plate steel hanging box

Abstract

The invention relates to a construction method of a circular detachable steel-concrete bottom plate steel hanging box, which belongs to the field of underwater foundation construction. The construction method of the circular detachable steel-concrete bottom plate steel hanging box comprises: S100, steel pipe pile construction: installing steel casing and injecting concrete. S200, installing heightening casing: connecting the heightening casing at the top of the steel casing. S300, installing crossbeam: passing the supporting foot through the heightening casing; lifting the crossbeam and dropping it from top to bottom to the corresponding supporting foot. S400, installing the bottom plate. S500, installing the cofferdam tube and installing the support and the steel cable. S600, lowering the cofferdam: removing the crossbeam and the supporting foot; moving the steel cable so that the bottom plate and the cofferdam tube descend along the steel casing; after descending to a fixed position, welding and fixing the anti-shear key to the steel casing. S700, removing the heightening casing, the steel cable and the support. S800, draining water: pumping out the water in the cofferdam tube. S900, foundation construction, installing the template on the bottom plate and installing the steel bar in the template to cast concrete. S1000, demolition.

Description

Technical Field

[0001] The invention belongs to the technical field of underwater foundation construction, and in particular relates to a construction method for a circular detachable steel-concrete bottom plate steel hanging box. Background Art

[0002] Steel-concrete bottom plate steel hanging box is a cofferdam technology used in the construction of high pile caps in cross-sea bridge construction. It is mainly used to construct high pile caps. The high pile cap is a pile foundation structure composed of several piles and a cap with the top located above the water surface. The piles and caps are mostly made of steel cable concrete and are widely used in bridge foundation engineering.

[0003] The current steel-concrete bottom plate steel hanging box construction method uses steel-concrete bottom plates and cylinders in the construction process, which are mainly used to form a cofferdam and can be used to cast concrete to form a cap. However, in the prior art, after the construction is completed, due to structural limitations, the steel-concrete bottom plate cannot be taken out for secondary use after the cap is cast, resulting in waste and increased costs. Summary of the invention

[0004] In view of the shortcomings in the related art, the present invention provides a circular detachable steel-concrete bottom plate steel hanging box construction method, the bottom plate is divided into a concrete bottom plate, a middle bottom plate and a side bottom plate, and the middle bottom plate and the side bottom plate can be removed and reused after construction. The construction cost is saved, and the concrete bottom plate, the middle bottom plate and the side bottom plate are easy and fast to install, which improves the construction efficiency. The technical problem of high cost in the prior art is solved.

[0005] The present invention provides a circular detachable steel-concrete bottom plate steel hanging box construction method, comprising:

[0006] S100, Steel Pipe Pile Construction: Install steel casing and inject concrete;

[0007] S200, Install the high casing: Connect the high casing on the top of the steel casing;

[0008] S300, install the crossbeam: pass the support legs through the heightening casing; lift the crossbeam and drop it from top to bottom onto the corresponding support legs;

[0009] S400, install the base plate;

[0010] Insert the concrete base plate into the corresponding steel casing from top to bottom;

[0011] Insert the middle bottom plate between the corresponding two steel casings and locate it between the corresponding concrete bottom plates;

[0012] Place the two side bottom plates on either side of the middle bottom plate;

[0013] S500, install the cofferdam tube and the support and steel cable: lift the cofferdam tube and insert it into the heightening casing from top to bottom, connect the bottom of the cofferdam tube with the bottom plate; fix the installation support to the top of the heightening cofferdam, and connect the bottom of the steel cable with the bottom plate;

[0014] S600, lowering the cofferdam: remove the crossbeam and support legs; move the steel cable to lower the bottom plate and the cofferdam tube along the steel casing; after lowering to a fixed position, weld the anti-shear key to the steel casing;

[0015] S700, dismantle the heightening casing, steel cables and supports;

[0016] S800, drainage: remove water from the cofferdam tube;

[0017] S900, foundation construction, installing formwork on the base plate and installing steel bars in the formwork and pouring concrete;

[0018] S1000, Demolition:

[0019] Lift and remove the cofferdam tube from bottom to top;

[0020] Pull the side bottom plate out horizontally away from the middle bottom plate;

[0021] Pull the midsole plate out from between the steel casings in the horizontal direction.

[0022] In some embodiments, step S100 specifically includes:

[0023] Drill holes on the bottom of the water according to the construction drawings, lift the steel casing and insert it into the corresponding holes from top to bottom, pour concrete into the steel casing and wait for it to solidify.

[0024] In some embodiments, step S300 includes step S310; step S310 is to install the support feet; manually pass the support feet through the through holes on the corresponding height connecting casings; ensure that the lengths of the two ends of the support feet extending out of the height connecting casings are close; repeat the above steps until the support feet are installed on each height connecting casing.

[0025] In some embodiments, step S310 is followed by step S320;

[0026] S320 is to place the crossbeam on the supporting feet; lift the crossbeam by lifting equipment to ensure that the crossbeam is in a horizontal state; adjust the crossbeam so that the length direction of the crossbeam is perpendicular to the length direction of the supporting feet; place the crossbeam on the side of the high casing and above the corresponding end of the supporting feet; lower the crossbeam so that the crossbeam is placed above the supporting feet.

[0027] In some embodiments, the specific steps of installing the base plate in step S400 are:

[0028] S410, install concrete base plate: lift the concrete base plate and insert the corresponding steel casing from top to bottom;

[0029] S420, install the middle bottom plate: lift the middle bottom plate, insert the middle bottom plate from top to bottom or horizontally between the corresponding two steel casings; lower the middle bottom plate, and place it on the beam; fit both sides of the middle bottom plate in the width direction with the side of the concrete bottom plate facing it.

[0030] In some embodiments, the specific steps of installing the base plate in step S400 are:

[0031] S430, lift the side bottom plate, move the side bottom plate from top to bottom or from the horizontal direction close to the side of the middle bottom plate, align the accommodating cavity with the concrete bottom plate; lower the side bottom plate, drop the side bottom plate on the beam; fit the side bottom plate tightly with the concrete bottom plate and the middle beam.

[0032] In some embodiments, the specific steps of step S700 are: manually separating the steel cable from the bottom plate, connecting the lifting device to the heightening casing, lifting the heightening casing and removing it.

[0033] In some of the embodiments, step S800 includes step S810; the specific steps of step S810 are to set a water-stop film bag between the concrete base plate and the steel casing, and inject mortar into the water-stop film bag.

[0034] In some of the embodiments, step S810 is followed by step S820; the specific steps of step S820 are: connecting the input end of the pumping equipment to the cofferdam tube, starting the pumping equipment to pump out the water in the cofferdam tube; manually observing whether there is a leak, and if there is a leak, manually filling and sealing it.

[0035] In some of the embodiments, step S000 is included before step S100; the specific steps of step S000 are to place grouting equipment, drilling equipment, lifting equipment, steel casing, heightening casing, supporting legs, beams, concrete bottom plate, middle bottom plate, side bottom plate and cofferdam tube in the construction area.

[0036] Based on the above technical solution, in the embodiment of the present invention, the bottom plate is divided into a concrete bottom plate, a middle bottom plate and a side bottom plate, and the middle bottom plate and the side bottom plate can be removed and reused after construction, thereby saving construction costs, and the concrete bottom plate, the middle bottom plate and the side bottom plate are easy and quick to install, thereby improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0038] Figure 1 This is a front view of an embodiment of the circular detachable steel-concrete bottom plate steel hanging box construction method of the present invention after step S300;

[0039] Figure 2 It is a top view after step S300 of an embodiment of the circular detachable steel-concrete bottom plate steel hanging box construction method of the present invention;

[0040] Figure 3 It is a top view after step S400 of an embodiment of the circular detachable steel-concrete bottom plate steel hanging box construction method of the present invention;

[0041] Figure 4 It is an exploded view of the bottom plate of the steel hanging box of the circular detachable steel-concrete bottom plate of the present invention;

[0042] Figure 5 This is a front view of an embodiment of the circular detachable steel-concrete bottom plate steel hanging box construction method of the present invention after step S500;

[0043] Figure 6 This is a front view of an embodiment of the circular detachable steel-concrete bottom plate steel hanging box construction method of the present invention after step S900;

[0044] Figure 7 The present invention is a construction flow chart of an embodiment of a construction method for a circular detachable steel-concrete bottom plate steel hanging box.

[0045] In the figure:

[0046] 100, steel casing; 200, connecting casing; 300, supporting foot; 400, crossbeam; 500, concrete bottom plate; 501, first clip strip; 600, middle bottom plate; 601, first clip groove; 700, side bottom plate; 701, second clip groove; 702, second clip strip; 800, cofferdam tube; 900, mounting support; 110, steel cable; 120, steel bull foot. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0048] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Thus, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] Please refer to all the drawings, in an illustrative embodiment of the construction method of the circular detachable steel-concrete floor steel hanging box of the present invention, the circular detachable steel-concrete floor steel hanging box includes: a steel casing 100, a heightening casing 200, a support leg 300, a crossbeam 400, a concrete floor 500, a middle floor 600, two side floors 700 and a cofferdam tube 800. Among them, the number of the steel casing 100 is at least two. The number of the heightening casings 200 is the same as the number of the steel casings 100, and they are connected to the top of the steel casings 100 accordingly; the supporting legs 300 are connected to the heightening casings 200, and the crossbeams 400 are arranged on the tops of the supporting legs 300; the number of the concrete bottom plates 500 is the same as the number of the steel casings 100, and they are sleeved on the corresponding steel casings 100; the concrete bottom plates 500 are arranged on the tops of the crossbeams 400; the middle bottom plates 600 are arranged on the crossbeams 400, and the two sides thereof are fitted with the corresponding two concrete bottom plates 500; the side bottom plates 700 are arranged on the crossbeams 400, and the side edges of the side bottom plates 700 are fitted with the side edges of the middle bottom plates 600; a accommodating cavity for accommodating the concrete bottom plates 500 is opened on the side bottom plates 700; the middle bottom plates 600, the side bottom plates 700 and the concrete bottom plates 500 are spliced ​​to form a whole bottom plate; the cofferdam tube 800 is arranged on the bottom plate.

[0052] Through the above solution, the bottom plate is divided into a concrete bottom plate 500, a middle bottom plate 600 and a side bottom plate 700, and the middle bottom plate 600 and the side bottom plate 700 can be removed and reused after construction, thereby saving construction costs, and the concrete bottom plate 500, the middle bottom plate 600 and the side bottom plate 700 are easy and quick to install, thereby improving construction efficiency.

[0053] In one embodiment, a through hole is formed on the heightening casing 200, and the support leg 300 is used to pass through the through hole, and the length direction of the support leg 300 is perpendicular to the length direction of the heightening casing 200. This facilitates the installation of the support leg 300, and enables the support leg 300 to vertically pass through the heightening casing 200, providing a stable support structure for the crossbeam 400, thereby enhancing the overall stability.

[0054] In some embodiments, there are four steel casings 100, which are located at the four corners of the rectangle respectively; there are four crossbeams 400, which are horizontal to each other; the crossbeams 400 are arranged on the support legs 300 extending outside the heightened casing 200. The number and position design of the steel casings 100 and the crossbeams 400 make the hanging box structure have better stability and load-bearing capacity under the rectangular layout, and are suitable for large-scale cap construction.

[0055] In some embodiments, a steel bull foot 120 is provided on the bottom plate, and an anti-shear key is provided at the end of the steel bull foot 120. During the construction process, the steel shear key can be welded with the steel casing 100, and the connection between the bottom plate and the steel casing 100 is realized through the steel bull foot and the steel shear key.

[0056] In some embodiments, a support is provided on the heightening casing 200, and the support is located above the bottom plate; a steel cable 110 is passed through the support, and the bottom end of the steel cable 110 is connected to the bottom plate. The steel cable 110 is used to realize the lifting and adjustment functions of the bottom plate and the cofferdam tube 800, which is convenient for precise control during the construction process.

[0057] In some embodiments, the concrete bottom plate 500 has through holes, and the concrete bottom plate 500 is sleeved on the heightening casing 200 through the through holes.

[0058] In the present invention, the circular detachable steel-concrete bottom plate steel hanging box construction method includes step S000. Step S000 is construction preparation.

[0059] In some embodiments, the specific steps of step S000 are to place grouting equipment, drilling equipment, lifting equipment, steel casing 100, heightening casing 200, supporting legs 300, beam 400, concrete bottom plate 500, middle bottom plate 600, side bottom plate 700 and cofferdam tube 800 in the construction area.

[0060] In some embodiments, if the construction location is close to the shore, then in step S000, the grouting equipment, drilling equipment, lifting equipment, steel casing 100, heightening casing 200, supporting legs 300, beam 400, concrete bottom plate 500, middle bottom plate 600, side bottom plate 700 and cofferdam tube 800 are moved and placed on the shore of the construction area.

[0061] In another embodiment, if the construction location is far from the shore, in step S000, the grouting equipment, the drilling equipment, the lifting equipment, the steel casing 100, the heightening casing 200, the supporting legs 300, the cross beam 400, the concrete bottom plate 500, the middle bottom plate 600, the side bottom plate 700 and the cofferdam tube 800 are moved and placed on the construction ship, and the construction ship is moved to the construction area.

[0062] It is worth noting that the lifting equipment can be integrated into the construction vessel, that is, the construction vessel is equipped with its own lifting equipment.

[0063] In some embodiments, step S100 is performed after step S000. Step S100 is steel pipe pile construction. The steel pipe pile construction includes installing a steel casing 100 and injecting concrete.

[0064] In some embodiments, step S100 includes drilling holes underwater according to the construction drawings, lifting the steel casing 100 and inserting it into the corresponding hole from top to bottom, pouring concrete into the steel casing 100 and waiting for solidification. The installation of the steel casing 100 and the concrete pouring steps ensure the basic stability of the circular detachable steel-concrete bottom plate steel hanging box construction method, providing a solid foundation for subsequent construction.

[0065] In some embodiments, step S100 includes step S110. Step S110 is drilling a hole underwater.

[0066] Furthermore, the specific step of S110 is to use a drilling device to drill four holes in sequence at the construction location in the construction area according to the drawings.

[0067] In some embodiments, step S100 includes step S120. Step S120 is after step S110.

[0068] Further, step S120 is to use a lifting device to connect a sling of the lifting device to one end of the steel casing 100. Lift the steel casing 100 to ensure that the steel casing 100 is vertically arranged. Align the bottom end of the steel casing 100 with the corresponding borehole. Lower the steel casing 100 and insert the bottom end of the steel casing 100 into the borehole. Repeat the above steps until all the steel casings 100 are inserted into the bottom of the water.

[0069] Furthermore, in step S120, after the steel casing 100 is inserted into the bottom of the water, the steel casing 100 can be inserted into the specified depth by a pile driving device. The height of the top of the steel casing 100 can be observed by a total station or a ruler.

[0070] In some embodiments, step S100 is followed by step S200 . Step S200 is to install the heightening casing 200 . That is, the heightening casing 200 is connected to the top of the steel casing 100 .

[0071] Furthermore, the specific steps of step S200 are: connect one end of the connecting casing 200 through the sling of the lifting equipment. Lift the connecting casing 200 to ensure that the connecting casing 200 is vertically arranged. Align the bottom end of the connecting casing 200 with the top end of the corresponding steel casing 100. Lower the connecting casing 200 and dock the bottom end of the connecting casing 200 with the top end of the steel casing 100. Connect the steel casing 100 with the connecting casing 200. Repeat the above steps until all the connecting casings 200 are connected to the steel casing 100.

[0072] Furthermore, in step S200, before connecting the steel casing 100 and the heightening casing 200, a step is also included, in which the heightening casing 200 is manually rotated to ensure that the perforation directions on each heightening casing 200 are parallel.

[0073] Furthermore, the height casing 200 and the steel casing 100 may be connected by means of a buckle, a slot, etc., or may be plug-in.

[0074] In some embodiments, step S200 is followed by step S300 . Step S300 is to install the crossbeam 400 .

[0075] In some embodiments, the step of S300 is to pass the support legs 300 through the heightening casing 200; lift the crossbeam 400 and drop it from top to bottom onto the corresponding support legs 300.

[0076] In some embodiments, step S300 includes step S310 . Step S310 is to install the support foot 300 .

[0077] Furthermore, step S310 is to manually pass the support legs 300 through the corresponding through holes on the heightening casing 200. Ensure that the lengths of the two ends of the support legs 300 extending out of the heightening casing 200 are close. Repeat the above steps until the support legs 300 are installed on each heightening casing 200. In the present invention, since the directions of the through holes are ensured to be parallel in step S200, after the support legs 300 are installed in step S300, the support legs 300 are parallel to each other.

[0078] In some embodiments, step S300 includes step S320. Step S320 is performed after step S310. Step S320 is to place the beam 400 on the supporting foot 300.

[0079] In some embodiments, the specific steps of step S320 are as follows: Lift the crossbeam 400 by a lifting device to ensure that the crossbeam 400 is in a horizontal state. Adjust the crossbeam 400 so that the length direction of the crossbeam 400 is perpendicular to the length direction of the support leg 300. Place the crossbeam 400 on one side of the casing 200 and above the end of the corresponding support leg 300. Lower the crossbeam 400 so that the crossbeam 400 is placed above the support leg 300.

[0080] Repeat the above steps until all the beams 400 are placed on the supporting legs 300 .

[0081] In some embodiments, step S300 is followed by step S400. Step S400 is to install a base plate.

[0082] In some embodiments, step S400 is to insert the concrete bottom plate 500 into the corresponding steel casing 100 from top to bottom; insert the middle bottom plate 600 between the corresponding two steel casings 100 and locate it between the corresponding concrete bottom plates 500; and place the two side bottom plates 700 on both sides of the middle bottom plate 600.

[0083] In some embodiments, step S400 includes step S410. S410 is to install the concrete base plate 500. The concrete base plate 500 is lifted and inserted into the corresponding steel casing 100 from top to bottom.

[0084] Furthermore, the specific steps of step S410 are as follows: lift the concrete bottom plate 500 by a lifting device, and move the concrete bottom plate 500 to the top of the height-connecting casing 200. Align the through hole on the concrete bottom plate 500 with the height-connecting casing 200 below it. Lower the concrete bottom plate 500, and insert the through hole into the height-connecting casing 200. Continue to lower the concrete bottom plate 500 until the concrete bottom plate 500 is placed above the crossbeam 400. Repeat the above steps until the concrete bottom plate 500 is installed on each height-connecting casing 200.

[0085] In some embodiments, step S400 includes step S420. Step S420 is performed after step S410. Step S420 is to install the midsole plate 600.

[0086] In some embodiments, step S420 includes lifting the middle bottom plate 600, inserting the middle bottom plate 600 from top to bottom or horizontally between the corresponding two steel casings 100; lowering the middle bottom plate 600, dropping the middle bottom plate 600 on the beam 400; and fitting the two sides of the middle bottom plate 600 in the width direction with the side of the concrete bottom plate 500 facing it. The detailed design of the bottom plate installation steps ensures the accurate installation and splicing of the concrete bottom plate 500, the middle bottom plate 600 and the side bottom plate 700, and improves the integrity and stability of the bottom plate.

[0087] In some embodiments, step S400 includes step S430. Step S430 is performed after step S420. Step S430 is to install the side bottom plate 700.

[0088] In some embodiments, the specific steps of step S430 are: lifting the side bottom plate 700, bringing the side bottom plate 700 close to the side of the middle bottom plate 600 from top to bottom or from the horizontal direction, aligning the accommodating cavity with the concrete bottom plate 500; lowering the side bottom plate 700, dropping the side bottom plate 700 on the cross beam 400; and tightly fitting the side bottom plate 700 with the concrete bottom plate 500 and the middle cross beam 400. The detailed description of the installation steps of the side bottom plate 700 ensures that the side bottom plate 700 is tightly fitted with the middle bottom plate 600 and the concrete bottom plate 500, further enhancing the integrity and load-bearing capacity of the bottom plate. At the same time, it is also convenient for fast and accurate operation during the disassembly process.

[0089] In some embodiments, the middle bottom plate 600 may have a card strip protruding outward on both sides in the width direction. The side bottom plate 700 facing the middle bottom plate 600 is provided with a card slot recessed inward. The card strip is used to engage with the card slot. In this way, the middle bottom plate 600 and the side bottom plate 700 are connected. In addition, a seal is provided to reduce the possibility of water infiltration.

[0090] Therefore, the specific steps of step S430 are: lifting the side bottom plate 700, moving the side bottom plate 700 from top to bottom or from the horizontal direction close to the side of the middle bottom plate 600, aligning the accommodation cavity with the concrete bottom plate 500; lowering the side bottom plate 700, and dropping the side bottom plate 700 on the beam 400. Pushing the side bottom plate 700 horizontally, the side bottom plate 700 moves close to the middle bottom plate 600, so that the card strip is inserted into the card slot, and the concrete bottom plate 500 enters the accommodation cavity.

[0091] The two sides of the middle bottom plate 600 in the width direction are fitted with the side of the concrete bottom plate 500 facing it. The detailed design of the bottom plate installation steps ensures the accurate installation and splicing of the concrete bottom plate 500, the middle bottom plate 600 and the side bottom plate 700, and improves the integrity and stability of the bottom plate.

[0092] In another embodiment, in order to quickly and stably connect the concrete bottom plate 500, the middle bottom plate 600 and the side bottom plate 700, a first clip strip 501 protrudes outward from the edge of the concrete bottom plate 500. Both sides of the middle bottom plate 600 in the width direction are provided with first clip grooves 601, and the first clip grooves 601 run through both ends of the middle bottom plate 600 in the length direction. Therefore, the specific steps in step S420 are to lift the middle bottom plate 600 and place the middle bottom plate 600 on one side of the steel casing 100; manually align the first clip groove 601 on the middle bottom plate 600 with the corresponding first clip strip 501. Move the middle bottom plate 600 horizontally so that the first clip strip 501 is inserted into the first clip groove 601 until the middle bottom plate 600 reaches the construction position.

[0093] Furthermore, a second clamping groove 701 may be provided on one side of the side bottom plate 700 for contacting with the concrete bottom plate 500 , and a second clamping strip 702 may be provided on one side of the side bottom plate 700 for contacting with the middle bottom plate 600 .

[0094] In step S430, the side bottom plate 700 may be lifted, the side bottom plate 700 is moved from top to bottom or from the horizontal direction close to the side of the middle bottom plate 600, the side bottom plate 700 is lowered, the accommodation cavity is aligned with the concrete bottom plate 500, and the side bottom plate 700 is dropped on the crossbeam 400. The side bottom plate 700 is moved horizontally to move the side bottom plate 700 close to the middle bottom plate 600, so that the first clamping strip 501 on the concrete bottom plate 500 is clamped into the second clamping groove 701 of the side bottom plate 700, and the second clamping strip 702 on the side bottom plate 700 is clamped into the first clamping groove 601 of the middle bottom plate 600. Through the design of the first clamping strip 501, the first clamping groove 601, the second clamping groove 701 and the second clamping strip 702, the stability of the connection between the middle bottom plate 600, the side bottom plate 700 and the concrete bottom plate 500 is improved, and the waterproof performance is also provided to avoid water leakage.

[0095] It is conceivable that, in order to further improve the waterproof property, a sealing strip may be provided on the first card strip 501 , the first card slot 601 , the second card slot 701 , and the second card strip 702 .

[0096] In some embodiments, the first clamping strip 501 may be a magnetic piece, which facilitates the alignment and connection of the first clamping slot 601 and the second clamping slot 701 during installation. Furthermore, the concrete bottom plate 500, the middle bottom plate 600 and the side bottom plate 700 can be more tightly connected through magnetic adsorption to avoid water leakage.

[0097] In some embodiments, step S400 is followed by step S500 . Step S500 is to install the cofferdam tube 800 and the support 900 and the steel cable 110 .

[0098] In some embodiments, step S500 is to lift the cofferdam tube 800 by a lifting device, place the cofferdam tube 800 above the heightening casing 200, and insert the heightening casing 200 from top to bottom to connect the bottom of the cofferdam tube 800 to the bottom plate; fix the mounting bracket 900 to the top of the heightening cofferdam, and connect the bottom of the steel cable 110 to the bottom plate.

[0099] In some embodiments, the cofferdam tube 800 is divided into a plurality of cofferdam plates.

[0100] Furthermore, the specific steps of step S500 are to lift the cofferdam plate by a lifting device and connect the bottom of the cofferdam plate to the bottom plate, repeat the above steps, and ensure that the cofferdam plate is adjacent to and connected to the previous cofferdam plate, until all the cofferdam plates are spliced ​​to form the cofferdam tube 800.

[0101] The cofferdam tube 800 and the bottom plate together form a cofferdam.

[0102] In some embodiments, step S500 is followed by step S600. S600 is to lower the cofferdam.

[0103] In some embodiments, the specific steps of step S600 are: dismantling the cross beam 400 and the supporting legs 300; moving the steel cable 110 to allow the bottom plate and the cofferdam tube 800 to descend along the steel casing 100; and welding and fixing the anti-shear key to the steel casing 100 after descending to a fixed position.

[0104] In some embodiments, step S600 is followed by step S700, which is to remove the connecting casing 200, the steel cable 110 and the support.

[0105] In some embodiments, step S700 is to manually separate the steel cable 110 from the bottom plate, connect the lifting equipment to the heightening casing 200, lift the heightening casing 200 and remove it.

[0106] In some embodiments, step S700 is followed by step S800, which is to drain water, specifically, to remove water from the cofferdam tube 800.

[0107] In some embodiments, step S800 includes step S810. Step S810 is sealing.

[0108] In some embodiments, the specific steps of step S810 are to set a waterproof film bag between the concrete base plate 500 and the steel casing 100, and inject mortar into the waterproof film bag. By injecting the waterproof film bag and mortar, water is effectively prevented from penetrating from the gap between the concrete base plate 500 and the steel casing 100, ensuring smooth subsequent drainage.

[0109] In some embodiments, step S800 further includes step S820. Step S820 is performed after step S810. Step S820 is to pump water.

[0110] In some embodiments, the specific steps of step S820 are: connecting the input end of the pumping equipment to the cofferdam tube 800, starting the pumping equipment to pump out the water in the cofferdam tube 800. Manually observe whether there is a leak, and if there is a leak, manually fill and seal it.

[0111] In some embodiments, step S800 is followed by step S900. Step S900 is the construction of the foundation.

[0112] In some embodiments, step S900 is to install a formwork on the base plate, install a steel cage in the formwork, and pour concrete.

[0113] Furthermore, the specific steps of step S900 are: lifting the template by a lifting device, and placing the template on the bottom plate from top to bottom. Adjusting the position of the template. Lifting the steel cage, placing the steel cage in the template and adjusting the position. Pouring concrete in the template by a pouring device. Waiting for the concrete to solidify.

[0114] In some embodiments, step S900 is followed by step S1000. Step S1000 is dismantling.

[0115] In some embodiments, the steps of step S1000 are as follows: lifting and moving the cofferdam tube 800 from bottom to top; pulling the side bottom plate 700 out horizontally away from the middle bottom plate 600; and pulling the middle bottom plate 600 out horizontally from between the steel casings 100.

[0116] Furthermore, the specific steps of step S1000 are: connect the cofferdam plates by the lifting equipment, and take out the cofferdam plates in turn. Move the side bottom plate 700 in a direction away from the middle bottom plate 600 and take it out. Pull out the middle bottom plate 600 horizontally along its length direction.

[0117] The bottom plate is divided into a concrete bottom plate 500, a middle bottom plate 600 and a side bottom plate 700. After construction, the middle bottom plate 600 and the side bottom plate 700 can be dismantled and reused, thus saving costs.

[0118] Through the description of multiple embodiments of the circular detachable steel-concrete bottom plate steel hanging box construction method of the present invention, it can be seen that the circular detachable steel-concrete bottom plate steel hanging box construction method embodiment of the present invention has at least one or more of the following advantages:

[0119] 1. The bottom plate is divided into a concrete bottom plate 500, a middle bottom plate 600 and a side bottom plate 700. After construction, the middle bottom plate 600 and the side bottom plate 700 can be removed and reused. This saves construction costs, and the concrete bottom plate 500, the middle bottom plate 600 and the side bottom plate 700 are easy and quick to install, thereby improving construction efficiency.

[0120] 2. Through the design of the first clamping strip 501, the first clamping slot 601, the second clamping slot 701 and the second clamping strip 702, the stability of the connection between the middle bottom plate 600, the side bottom plate 700 and the concrete bottom plate 500 is improved, and waterproof performance is also provided to avoid water leakage.

[0121] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0122] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A circular detachable steel-concrete bottom plate steel hanging box construction method, characterized in that: The detachable steel-concrete bottom plate steel hanging box comprises: A concrete bottom plate, wherein a first clip is protruding outward from an edge of the concrete bottom plate; the first clip is a magnetic piece; A midsole plate, wherein first slots are provided on both sides of the midsole plate in a width direction, and the first slots run through both ends of the midsole plate in a length direction; A side bottom plate, wherein a second clamping groove is provided on a side of the side bottom plate for contacting with the concrete bottom plate; and a second clamping strip is provided on a side of the side bottom plate for contacting with the middle bottom plate; The construction method comprises: S100, Steel Pipe Pile Construction: Install steel casing and inject concrete; S200, Install the high casing: Connect the high casing on the top of the steel casing; S300, install the crossbeam: pass the support legs through the heightening casing; lift the crossbeam and drop it from top to bottom onto the corresponding support legs; S400, install the base plate; Insert the concrete base plate into the corresponding steel casing from top to bottom; Lift the middle bottom plate and place it on one side of the steel casing; manually align the first clamping groove on the middle bottom plate with the corresponding first clamping strip; horizontally move the middle bottom plate so that the first clamping strip is clamped into the first clamping groove until the middle bottom plate reaches the construction position; Lift the side bottom plate, move the side bottom plate from top to bottom or from the horizontal direction close to the side edge of the middle bottom plate, lower the side bottom plate, align the accommodating cavity with the concrete bottom plate and drop the side bottom plate on the crossbeam; move the side bottom plate horizontally to move the side bottom plate close to the middle bottom plate, so that the first clamping strip on the concrete bottom plate is clamped into the second clamping groove of the side bottom plate, and the second clamping strip on the side bottom plate is clamped into the first clamping groove of the middle bottom plate; S500, install the cofferdam tube and the support and steel cable: lift the cofferdam tube and insert it into the heightening casing from top to bottom, connect the bottom of the cofferdam tube with the bottom plate; fix the installation support to the top of the heightening cofferdam, and connect the bottom of the steel cable with the bottom plate; S600, lowering the cofferdam: remove the crossbeam and support legs; move the steel cable to lower the bottom plate and the cofferdam tube along the steel casing; after lowering to a fixed position, weld the anti-shear key to the steel casing; S700, dismantle the heightening casing, steel cables and supports; S800, drainage: remove water from the cofferdam tube; S900, foundation construction, installing formwork on the bottom plate and installing steel bars in the formwork and pouring concrete; S1000, Demolition: Lift and remove the cofferdam tube from bottom to top; Pull the side bottom plate out horizontally away from the middle bottom plate; Pull the midsole plate out from between the steel casings in the horizontal direction.

2. The circular detachable steel-concrete bottom plate steel hanging box construction method according to claim 1 is characterized in that: The step S100 specifically includes: Drill holes underwater according to the construction drawings, lift the steel casing and insert it into the corresponding holes from top to bottom, pour concrete into the steel casing and wait for it to solidify.

3. The circular detachable steel-concrete bottom plate steel hanging box construction method according to claim 1 is characterized in that: Step S300 includes step S310; step S310 is to install the support feet; manually pass the support feet through the through holes on the corresponding height-connecting casings; ensure that the lengths of both ends of the support feet extending out of the height-connecting casings are close; repeat the above steps until the support feet are installed on each height-connecting casing.

4. The circular detachable steel-concrete bottom plate steel hanging box construction method according to claim 3 is characterized in that: After step S310 is step S320; S320 is to place the crossbeam on the supporting feet; lift the crossbeam by lifting equipment to ensure that the crossbeam is in a horizontal state; adjust the crossbeam so that the length direction of the crossbeam is perpendicular to the length direction of the supporting feet; place the crossbeam on the side of the high casing and above the corresponding end of the supporting feet; lower the crossbeam so that the crossbeam is placed above the supporting feet.

5. The circular detachable steel-concrete bottom plate steel hanging box construction method according to claim 1 is characterized in that: The specific steps of step S700 are: manually separating the steel cable from the bottom plate; connecting the lifting device to the heightening casing, lifting the heightening casing and removing it.

6. The circular detachable steel-concrete bottom plate steel hanging box construction method according to claim 1 is characterized in that: Step S800 includes step S810; the specific steps of step S810 are to set a water-stop film bag between the concrete base plate and the steel casing, and inject mortar into the water-stop film bag.

7. The circular detachable steel-concrete bottom plate steel hanging box construction method according to claim 6 is characterized in that: Step S810 is followed by step S820; the specific steps of step S820 are: connecting the input end of the pumping equipment to the cofferdam tube, starting the pumping equipment to pump out the water in the cofferdam tube; manually observing whether there is a leak, and if there is a leak, manually filling and sealing it.

8. The circular detachable steel-concrete bottom plate steel hanging box construction method according to claim 1 is characterized in that: Before step S100, step S000 is included; the specific steps of step S000 are: placing grouting equipment, drilling equipment, lifting equipment, steel casing, heightening casing, supporting legs, beams, concrete bottom plate, middle bottom plate, side bottom plate and cofferdam tube in the construction area.

Images