Deepwater pile foundation repairing structure installed on water

Abstract

The utility model discloses a deepwater pile foundation repairing structure installed on water, which comprises a plurality of steel sleeves which are vertically connected together, the steel sleeves are arranged on the periphery of a deepwater pile, each steel sleeve comprises two U-shaped pipe pieces which are connected together, and a leaking stoppage capsule is arranged on the inner side of the steel sleeve on the bottom layer. Each leaking stoppage capsule is located between the outer wall of the deepwater pile and the inner wall of the U-shaped pipe piece on the bottom layer. A steel top cover is arranged on the top-layer steel sleeve, one end of the steel top cover is connected with the top end of the top-layer steel sleeve, the other end of the steel top cover is connected with the deepwater pile, and a grouting opening is formed in the steel top cover; the U-shaped pipe pieces and different sections of the steel sleeve are connected through welding, the problems that the strength of a steel plate is weakened by bolt holes and the integrity of the sleeve structure connected through bolts is poor are solved, the stress performance of a circular pipe structure is kept, personnel operation is located above the water surface during structure repairing construction, and the construction efficiency is improved. And the operation safety risk of the diver in the underwater complex space is eliminated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of underwater pile foundation repair in operation period, especially relates to a deep water pile foundation repair mechanism installed on water. BACKGROUND

[0002] Pile foundation is one of main foundation types of water buildings such as bridges and wharfs in China, and after a period of operation, different degrees of diseases will be shown, and pile foundation repair is needed. Steel sleeve repair method does not need to set up drainage cofferdams and can significantly improve the bearing capacity and durability of pile foundation, so it becomes one of the most commonly used methods in underwater pile foundation repair in operation period.

[0003] Steel sleeve repair method is to use two pieces of U-shaped pipe pieces to cover the pile foundation to be repaired, and to be connected by bolts to become a sleeve structure, a gushing stopping structure is arranged at the bottom of the sleeve, and the gushing stopping structure is generally a steel base, and after pumping water in the steel casing, dry pouring concrete is carried out. When defects exist in a long range of pile body, the steel sleeve is generally made into several segments. Because the installation and construction of the steel sleeve are located underwater, and the strength and reliability of underwater welding at the present stage are difficult to meet the design requirements, therefore, bolt connection is needed between the two pieces of U-shaped pipe pieces, between the segments, and between the steel base and the steel sleeve.

[0004] However, the existing repair method has the following problems: because there are pile caps, cross beams, pile caps and other upper structures on the pile foundation in operation period, and the number of pile foundations is large, the safety risk of divers working in the underwater complex space is large; underwater operation is a concealed project, and it is difficult for engineering personnel to carry out inspection and acceptance work, so the quality control is difficult; underwater bolt connection needs accurate alignment of bolt holes, and the work efficiency of underwater bolt installation is low; bolt holes weaken the cross section of the component, stress concentration exists at the connection, the overall performance of the sleeve structure is poor, thicker steel plates need to be used to manufacture the sleeve to meet the stress requirements, and the repair cost is high. SUMMARY

[0005] The utility model aims at overcoming the insufficient of prior art, and provides a deep water pile foundation repair structure installed on water.

[0006] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0007] A deep water pile foundation repair structure installed on water, comprising a plurality of steel sleeves connected together, the steel sleeves are arranged around the deep water pile, each steel sleeve comprises two U-shaped pipe pieces connected together, a leak stopping capsule is arranged on the inner side of the bottom layer steel sleeve, and each leak stopping capsule is located between the outer wall of the deep water pile and the inner wall of the bottom layer U-shaped pipe piece; mortar is filled in the gap between the inside of the leak stopping capsule and the deep water pile and the steel sleeve, a steel top cover is arranged on the top layer steel sleeve, one end of the steel top cover is connected with the top end of the top layer steel sleeve, the other end is connected with the deep water pile, and a grouting opening is arranged on the steel top cover.

[0008] Further, each of the steel sleeves comprises two U-shaped pipe pieces which are welded to form a cylinder surrounding the outer periphery of the deep water pile.

[0009] Further, the inner diameter of each of the steel sleeves is 5-10 cm larger than the diameter of the pile to be repaired.

[0010] Further, each of the steel sleeves is connected to the steel sleeve of the previous section by welding.

[0011] Further, the inner wall of the U-shaped pipe piece is provided with a plurality of anchor nails at intervals.

[0012] Further, the steel top cover comprises two U-shaped flat plates which are bolted to form a cylinder, the cylinder surrounds the outer periphery of the pile to be repaired, and the inner side of the cylinder is in close contact with the outer surface of the deep water pile.

[0013] Further, the bottom of each of the flat plates is provided with an outward horizontal flange in the circumferential direction, the horizontal flange is connected to the steel sleeve, and the end of the horizontal flange is placed on the top surface of the uppermost steel sleeve.

[0014] Further, the steel sleeve connecting steel plate is provided with a grouting port and a drainage and exhaust hole.

[0015] Further, the leaking stopper capsule is U-shaped in cross section, the leaking stopper capsule is provided with a grouting interface, and two leaking stopper capsules are connected to form a complete annular body.

[0016] Further, vertical upward steel sheets and vertical downward steel sheets are arranged in the circumferential direction of the leaking stopper capsule, and the leaking stopper capsule is installed on the inner side of the bottommost steel sleeve through the vertical upward steel sheets and the vertical downward steel sheets.

[0017] The beneficial effects of the utility model are:

[0018] 1. In the utility model, the connection between the U-shaped pipe pieces of the steel sleeve and different sections adopts welding, which avoids the problems of weakening the strength of the steel plate by bolt holes and poor overall performance of the sleeve structure connected by bolts, maintains good stress performance of the circular pipe structure, and is more economical in repairing sleeve materials and costs.

[0019] 2. Compared with the existing steel sleeve construction method, the deep water pile foundation repair structure installed on water in the utility model is characterized in that the personnel operation during construction of the repair structure is located above the water surface, the safety risk of the diver operation in the complex underwater space is eliminated, the engineers can perform inspection and acceptance of each process on water, which is beneficial to the quality control of the repair operation, the problem of difficult accurate alignment of underwater bolts is avoided, and the construction efficiency is higher. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The side view of the bottom section steel sleeve.

[0021] Figure 2 The sectional view of the steel sleeve.

[0022] Figure 3 The side view of the steel top cover.

[0023] Figure 4 The plan view of the steel top cover.

[0024] Figure 5 The schematic view of the plugging capsule when not inflated.

[0025] Figure 6 The schematic view of the plugging capsule when inflated.

[0026] Figure 7 The schematic view of the installation pile climbing equipment.

[0027] Figure 8 The schematic view of the installation pile climbing equipment.

[0028] Figure 9 The schematic view of the installation pile climbing equipment.

[0029] Figure 10 The schematic view of the installation bottom section steel sleeve.

[0030] Figure 11 The schematic view of the installation bottom section steel sleeve.

[0031] Figure 12 The schematic view of the installation of the remaining steel sleeves.

[0032] Figure 13 The schematic view of the installation of the remaining steel sleeves.

[0033] Figure 14 The schematic view of the installation of the remaining steel sleeves.

[0034] Figure 15 The schematic view of the installation of the steel top cover, plugging and grouting.

[0035] Wherein: 1 - climbing equipment; 11 - upper frame; 12 - lower frame; 13 - boom; 2 - steel sleeve; 21 - U-shaped pipe piece; 22 - anchor; 3 - leaking stopper; 31 - capsule; 32 - upper fixed end; 33 - lower fixed end, 34 - grouting interface; 4 - steel top cover; 41 - flat plate, 42 - bolt, 43 - steel sleeve connecting steel plate; 44 - grouting port; 45 - drainage and exhaust hole; 5 - non-shrinkage high-performance mortar; 6 - deep water pile; 7 - bridge; 8 - small barge; A - weld; B - defect; C - water surface. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be further described below with reference to the drawings.

[0037] The utility model discloses a deep water pile foundation repair mechanism installed on water, the repair mechanism includes the equipment for repairing and the repair structure for deep water pile 6 itself.

[0038] The equipment for repairing includes climbing equipment 1, the climbing equipment 1 is a climbing robot, and the climbing robot can drive the steel sleeve 2 to ascend or descend through the steel wire arranged on the robot boom.

[0039] The repair structure for deep water pile 6 itself includes steel sleeve 2, leaking stopper 3, steel top cover 4 and non-shrinkage high-performance mortar 5.

[0040] In the application, the deep water pile 6 to be repaired is cylindrical, and the top end of the deep water pile 6 is an upper structure, which can be a bridge 7 supported by the deep water pile 6.

[0041] As shown in Figure 1 and Figure 2 The steel sleeve 2 is a tubular structure made of steel, and the inner diameter of the steel sleeve 2 is 5-10 cm larger than the diameter of the pile to be repaired. When manufacturing, the steel sleeve 2 is divided into several segments in the length direction, and each segment is divided into two U-shaped pipe pieces 21 with a U-shaped cross section. The inside of the U-shaped pipe piece 21 is welded with several anchors 22, so that the non-shrinkage high-performance mortar 5 can be better bonded with the steel sleeve. Two U-shaped pipe pieces 21 are assembled into a steel sleeve 2 by welding, and the steel sleeve 2 is located at the periphery of the deep water pile 6. The inner wall of the steel sleeve 2 is 2.5-5 cm away from the outer wall of the deep water pile 6.

[0042] As shown in Figure 3 and Figure 4As shown, the steel top cover 4 includes two U-shaped flat plates 41, bolts 42, and steel sleeve connecting steel plates 43. The two flat plates 41 are assembled into a cylinder by the bolts 42, and the cylinder is wrapped around the outer periphery of the pile body to be repaired, with the inner side of the cylinder closely abutting the outer surface of the pile 6. The bottom of each flat plate 41 is provided with an outward horizontal flange in the circumferential direction, which is the steel sleeve connecting steel plate 43. The end of the horizontal flange is placed on the top surface of the uppermost steel sleeve 2, and there is a gap between the uppermost steel sleeve 2 and the pile 6. The horizontal flange is the top plate of the gap, and the horizontal flange, i.e. the steel sleeve connecting steel plate 43, has a grouting port 44 and a drainage and exhaust hole 45. The two U-shaped flat plates 41 can tightly hold the pile to be repaired after being butt-jointed by the bolts 42. After the horizontal flange, i.e. the steel sleeve connecting steel plate 43, is welded to the top surface of the uppermost steel sleeve 2, the steel top cover 4 can bear the weight of the steel sleeve 2 and form a sealed environment between the steel sleeve 2 and the pile 6. The high-performance non-shrinkage mortar 5 can be injected between the steel sleeve 2 and the pile 6 through the grouting port 44.

[0043] As shown in Figure 5 and Figure 6 The leak stopper capsule 3 is a bottom leak stopper device, and the cross section of the leak stopper capsule 3 is U-shaped. The leak stopper capsule 3 is arranged in the inner ring of the bottommost section of the steel sleeve 2. The leak stopper capsule 3 is arranged in the circumferential direction along the lower part of the inner side wall of the bottommost section of the steel sleeve 2. The leak stopper capsule 3 is located between the inner wall of the U-shaped pipe piece in the bottom layer and the outer wall of the pile 6, and between the inner side of the steel sleeve 2 and the outer side of the pile 6. Two leak stopper capsules 3 are jointed to form a complete annular body.

[0044] The leak stopper capsule 3 includes a capsule 31, an upper fixed end 32, a lower fixed end 33, and a grouting interface 34. The capsule 31 is made of steel bars and rubber. A plurality of vertically upward steel pieces are arranged in the circumferential direction of the capsule 31, or a ring-shaped upward steel piece is arranged in the circumferential direction of the capsule 31. The top ends of the plurality of vertically upward steel pieces or the ring-shaped upward steel piece protrude from the upper surface of the capsule 31, and the plurality of vertically upward steel pieces or the ring-shaped upward steel piece is the upper fixed end 32. At the same time, a plurality of vertically downward steel pieces are arranged in the circumferential direction of the capsule 31, or a ring-shaped downward steel piece is arranged in the circumferential direction of the capsule 31. The top ends of the plurality of vertically downward steel pieces or the ring-shaped downward steel piece protrude from the lower surface of the capsule 31, and the plurality of vertically downward steel pieces or the ring-shaped downward steel piece is the lower fixed end 33. The upper fixed end 32 and the lower fixed end 33 are fixed to the inner side of the steel sleeve 2 by screws, so that the leak stopper capsule 3 is fixed to the inner side of the steel sleeve 2.

[0045] The grouting interface 34 is located on the capsule 31, and the non-shrinkage high-performance mortar 5 can be injected into the capsule 31 through the grouting interface 34, and the capsule 31 expands in volume to fill the gap between the inner side of the steel sleeve 2 and the outer side of the pile at the bottom, thereby achieving the function of plugging. Since the grouting interface 34 is used to inject mortar into the capsule 31, the corresponding part of the side wall of the steel sleeve 2 is also provided with an opening, and the mortar is injected into the capsule 31 through the opening and the grouting interface 34. The plugging capsule 3 plugs the gap between the bottom of the steel sleeve 2 and the deep water pile 6 at the bottom of the bottom section, and the grouting interface 34 can be plugged after the non-shrinkage high-performance mortar 5 is solidified, without the need for additional plugging of the grouting interface 34.

[0046] The non-shrinkage high-performance mortar 5 is a material specially designed for repairing concrete structures or steel structures, and has the characteristics of high fluidity, non-shrinkage, high strength, and rapid solidification.

[0047] The steel sleeve 2 is arranged on the periphery of the deep water pile 6 by the climbing pile equipment 1, i.e. the climbing pile robot.

[0048] As shown in Figure 7 The climbing pile equipment 1 for installing the steel sleeve 2 is installed on the deep water pile 6, and the climbing pile equipment 1 is a climbing pile robot.

[0049] The climbing pile equipment 1 includes an upper frame 11 and a lower frame 12, and each of the upper frame 11 and the lower frame 12 includes two U-shaped parts. The upper frame 11 and the lower frame 12 are each assembled by two U-shaped parts through bolts, and after assembly, the upper frame 11 and the lower frame 12 are arranged around the periphery of the pile body of the deep water pile 6. The upper frame 11 and the lower frame 12 of the climbing pile robot can be moved up and down along the pile body of the deep water pile 6 in a ring-encircling and step-by-step manner.

[0050] The upper frame 11 and the lower frame 12 are each assembled by two U-shaped parts through bolts. The upper frame 11 and the lower frame 12 are each provided with a clamping jaw, and the clamping jaws of the upper frame 11 and the lower frame 12 are clamped or loosened with the pile body of the deep water pile 6 through remote control.

[0051] An oil cylinder is arranged between the upper frame 11 and the lower frame 12, and the oil cylinder pushes the upper frame 11 to move up and down along the pile body of the deep water pile 6. In an embodiment, when the climbing equipment 1 is installed, the lower frame 12 can be fixedly connected to the deep water pile 6 in a hugging manner, and a support rod facing the upper frame 11 is arranged on the lower frame 12, the support rod is used to support the oil cylinder, the oil cylinder piston is connected to the upper frame 11, and the oil cylinder drives the upper frame 11 to move up and down along the pile body of the deep water pile 6. As another embodiment of the present application, the oil cylinder can be replaced by an electro-hydraulic cylinder.

[0052] The utility model discloses a lifting arm 13 is installed on the both sides of upper frame 11, is used for the lifting and alignment of U type pipe piece 21, and the lifting arm 13 on the both sides of upper frame 11 can be crossbeam or frame type flat plate, can set up multiple steel wire ropes on each lifting arm 13, the bottom of steel wire rope is provided with a hook, and U type pipe piece 21 is provided with a reserved snap ring or protruding ring, the hook on the bottom of steel wire rope is hung on the snap ring or ring, then U type pipe piece 21 can be hoisted through lifting arm 13.

[0053] As a preferred mode of the present application, in order to prevent the pile climbing equipment 1, i.e. the pile climbing robot, from falling into the water uncontrollably, a steel wire can be used when installing the pile climbing equipment 1. One end of the steel wire is fixed on the ship, and the other end is connected to the pile climbing equipment 1, i.e. the pile climbing robot. The pile climbing equipment 1 is pulled through the steel wire to prevent it from falling into the water uncontrollably.

[0054] A construction method of a deep water pile foundation repair structure installed on water is shown in Figures 8 to 15 The figure A is a weld seam generated by welding operation, B is a defect to be repaired on the pile body, and the defect is generally at the middle part of the pile body due to ship collision or other reasons. C is the water surface. The construction method specifically includes the following steps:

[0055] Manufacturing the steel sleeve 2: after determining the size of the steel sleeve 2, the steel plate is rolled and welded in the factory to form the U-shaped pipe piece 21. The surface of the U-shaped pipe piece 21 is rusted by sand blasting, and the anchor bolt 22 is welded after the rusting is completed. The anti-corrosion coating is performed. The leak stopper capsule 3 is installed on the inner side of the bottom section of the steel sleeve 2, and one leak stopper capsule 3 is installed on the inner side of each of the two U-shaped pipe pieces 21 of the bottom layer. After passing the acceptance, it is transported to the site.

[0056] Installing the pile climbing equipment 1: above the water surface, the pile climbing equipment 1 is installed on the pile 6 to be repaired through ship operation. At this time, the lower frame 12 is first tightly gripped with the pile. The oil cylinder is controlled by remote control to work, and the upper frame 11 is lifted after the oil cylinder works. The upper frame 11 is tightly gripped with the pile, the lower frame 12 is loosened and lifted, and the pile climbing equipment moves upward by one stroke. Repeat this step until the pile climbing equipment moves to the top of the pile.

[0057] As an embodiment of the present application, the lower frame 12 is tightly gripped with the deep water pile 6, and the upper frame 11 is climbed to the top of the pile by designing the oil cylinder or electro-hydraulic driving stroke.

[0058] Installing the bottom section of the steel sleeve 2: the U-shaped pipe piece 21 of the bottom section of the steel sleeve 2 is lifted and transported to the small barge 8 by the crane, and is transported to the side of the pile by the small barge.

[0059] The two U-shaped segments 21 are hoisted by the boom 13 of the climbing pile equipment 1, and a bottommost steel sleeve 2 is formed by welding, and after welding, the bottommost steel sleeve 2 is lowered to a position close to the water surface. When welding the two U-shaped segments 21, a support device such as a support rod on the ship can be used to support the U-shaped segments 21. The boom 13 can be provided with a plurality of steel wires for hoisting the U-shaped segments 21.

[0060] The remaining steel sleeves 2 are installed: the upper and lower sections of the steel sleeve 2 are welded together as a whole until the installation of all sections is completed.

[0061] In the utility model, when the upper and lower steel sleeves 2 are connected together by welding, the climbing pile equipment 1, i.e. the climbing pile robot, can be remotely controlled according to requirements, the upper frame 11 is moved downward to drive the steel sleeve 2 to move downward, and the lower part of the steel sleeve 2 gradually sinks into the water. Before the lower part of the steel sleeve 2 sinks into the water, a grouting device should be connected to the plugging capsule 3. The topmost steel sleeve 2 is always located above the water surface.

[0062] The steel top cover 4 is installed: waterproof sealing rubber pads are pasted at the bolt connection positions of the steel top cover, the two U-shaped flat plates 41 are hoisted and placed on the top of the topmost steel sleeve 2 by using the same hoisting method as that for the steel sleeve 2, the two U-shaped flat plates 41 are connected together as a whole by using the bolts 42 on the water, and the two U-shaped flat plates 41 are welded with the top steel sleeve 2.

[0063] Plugging: high-performance non-shrinkage mortar 5 is injected into the capsule 31 through the grouting interface 34, the capsule 31 is expanded in volume to fill the bottom gap between the steel sleeve 2 and the pile, and the plugging is completed.

[0064] Grouting: high-performance non-shrinkage mortar 5 is injected into the gap between the steel sleeve 2 and the pile through the grouting interface 44, all the gaps between the steel sleeve 2 and the pile are filled, and the repair work is completed when the strength is formed.

[0065] After the repair work is completed, the climbing pile equipment 1, i.e. the climbing pile robot, is removed through the work on the ship.

[0066] In the drawings of the embodiment, the same or similar reference numerals correspond to the same or similar parts; in the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the position relationship in the drawings are only used for exemplary description, and cannot be understood as a limitation on the present patent, and for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

Claims

1. A water-based installed deep water pile foundation repair structure comprising a plurality of steel sleeves (2) connected together in a stack, the steel sleeves (2) being arranged around a deep water pile (6), characterised in that: Each steel sleeve (2) comprises two U-shaped pipe pieces (21) connected together, a leak-stopping capsule (3) is arranged inside the bottom layer of steel sleeve (2), each leak-stopping capsule (3) is located between the outer wall of deep water pile (6) and the inner wall of one bottom layer of U-shaped pipe piece (21); mortar is filled in the inside of leak-stopping capsule (3) and the gap between deep water pile (6) and steel sleeve (2), a steel top cover (4) is arranged on the top layer of steel sleeve (2), one end of steel top cover (4) is connected with the top end of top layer of steel sleeve (2), the other end is connected with deep water pile (6), grouting port (44) is arranged on steel top cover (4).

2. A water-based installed deep pile foundation repair structure according to claim 1, characterized in that: Each steel sleeve (2) comprises two U-shaped pipe pieces (21) which are connected together by welding to form a cylinder surrounding the deep water pile (6).

3. A water-based installed deep pile foundation repair structure according to claim 1, characterized in that: The inner diameter of each steel sleeve (2) is 5-10 cm larger than the diameter of the pile to be repaired.

4. A water-based installed deep pile foundation repair structure according to claim 1, characterized in that: Each steel sleeve (2) is connected with the steel sleeve (2) in the previous section by welding.

5. A water-based installed deep pile foundation repair structure according to claim 1, characterized in that: A plurality of anchor bolts (22) are arranged on the inner wall of U-shaped pipe piece (21) at intervals.

6. A water-based installed deep pile foundation repair structure according to claim 1, characterized in that: The steel top cover (4) comprises two U-shaped flat plates (41), the two flat plates (41) are assembled into a cylinder by bolts (42), the cylinder surrounds the outer periphery of the pile to be repaired, and the inner side of the cylinder is in close contact with the outer surface of deep water pile (6).

7. A water-based installed deep pile foundation repair structure according to claim 6, characterised in that: A horizontal outward flange is arranged on the bottom of each flat plate (41) in the circumferential direction, the horizontal flange is a steel sleeve connecting plate (43), and the end of the horizontal flange is placed on the top surface of the uppermost layer of steel sleeve (2).

8. A water-based installed deep pile foundation repair structure according to claim 7, characterised in that: Grouting port (44) and drainage and exhaust hole (45) are arranged on the steel sleeve connecting plate (43).

9. A water-based installed deep pile foundation repair structure according to claim 1, characterized in that: The leak-stopping capsule (3) is U-shaped in cross section, grouting port (34) is arranged on the leak-stopping capsule (3), and two leak-stopping capsules (3) are connected to form a complete annular body.

10. A water-based installed deep pile foundation repair structure according to claim 1, characterized in that: Vertical upward steel sheets and vertical downward steel sheets are arranged in the circumferential direction of leak-stopping capsule (3), and the leak-stopping capsule (3) is installed on the inner side of the bottom layer of steel sleeve (2) through the vertical upward steel sheets and the vertical downward steel sheets.

Images