Construction device for gravity anchoring bed of double-wall steel cofferdam in deepwater of reservoir area without covering layer
By designing a gravity anchor construction device for deep water without cover layer double wall steel cofferdam in the reservoir area, the combination of cargo ship and steel structure is used to achieve flexible deposition of concrete block anchors and tonnage increase of gravity anchors, solving the deep water of reservoir area The difficulties in gravity anchor construction in the environment reduce construction costs and cycles.
Patent Information
- Application Number
- CN202421162783.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-27
AI Technical Summary
In the deep water environment of the reservoir area, the lack of large-tonnage transport ships or floating crane equipment leads to the inability to effectively deposition and fix gravity anchors, limiting the selection and implementation of anchor positions.
A gravity anchoring construction device for deep-water covered double-wall steel cofferdam in the reservoir area was designed, and two cargo ships, strip-shaped steel flat couplers and plate-shaped steel flat couplers were used to realize the water gantry, pulley set and anchored wire rope. The initial lifting, positioning and decentralization of concrete block anchors gradually increases the tonnage of anchors.
Through the combination of pulley set and anchor wire rope, the device realizes flexible lifting and lowering of concrete block anchors, improves the tonnage of gravity anchors, solves the problem of limited construction conditions, and reduces construction costs and cycles.
Smart Images
Figure CN222435287U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of deepwater foundation construction, in particular to a gravity anchor bed construction device for a double-wall steel cofferdam without a covering layer in a reservoir area. Background Art
[0002] In deepwater foundation construction, when it comes to underwater fixing of construction vessels and various types of construction facilities, gravity anchors are a common solution. This method places the anchor body directly on the riverbed surface and relies on its own gravity to provide anchoring force for the upper structure. It has the advantages of good stability, high bearing capacity and reliable construction. Especially in the deepwater foundation construction environment, it provides an underwater anchoring system for self-floating facilities. Underwater gravity anchors are increasingly used in the construction of bridges across rivers, seas and deep reservoirs.
[0003] However, when the conditions in the reservoir area are limited, there is a problem that there are no large-tonnage transport ships or floating cranes to enter the reservoir area to lower the designed tonnage gravity anchors, or the height of the floating crane makes it impossible to release the hook, which seriously restricts the selection of gravity anchoring positions and the implementation of anchoring. There is still room for improvement. Utility Model Content
[0004] The utility model aims to overcome the deficiencies in the prior art and provide a gravity anchor bed construction device for a double-wall steel cofferdam without a covering layer in a reservoir area in deep water.
[0005] The gravity anchor bed construction device for the double-wall steel cofferdam without covering layer in deep water of the reservoir area comprises: a cargo ship, a strip steel parallel joint and a plate steel parallel joint, the two cargo ships are parallel and connected to each other through the strip steel parallel joint and the plate steel parallel joint, and the cargo ships are provided with a car crane and a winch;
[0006] A launching gantry is fixed in the middle between the two cargo ships. A lowering opening for a concrete block anchor is arranged in the launching gantry. Both sides of the launching gantry are respectively connected by plate-shaped steel sections to form an assembly platform for placing the concrete block anchor. The two surfaces of the concrete block anchor perpendicular to each other are respectively provided with a first lifting ring of the anchor block and a second lifting ring of the anchor block.
[0007] The top of the launching gantry extends to just above the lowering port; an anchor block launching anchor end is provided above the top of the launching gantry, a first pulley block is provided below the top, and an anchor block lowering anchor end and a second pulley block are provided at opposite side edges of the lowering port, respectively, wherein the second pulley block is provided on the side of the launching gantry close to the winch.
[0008] Preferably, the truck crane and the winch are respectively installed on two cargo ships, and the cargo ship where the winch is located is provided with a counterweight.
[0009] Preferably, both ends of the strip-shaped steel parallel connection are respectively fixed to the ends of the two cargo ships, and the two assembly platforms formed by the plate-shaped steel parallel connection are respectively arranged on the inner sides of the two strip-shaped steel parallel connections.
[0010] Preferably, the concrete block anchor is alternately connected to the truck crane or the winch through the first lifting ring of the anchor block or the second lifting ring of the anchor block.
[0011] Preferably, the underwater anchoring end of the anchor block is anchored and connected with an anchor wire rope, the bottom end of the anchor wire rope is fixedly connected to the second lifting ring of the anchor block of a concrete block anchor, and the first lifting rings of the anchor blocks of several concrete block anchors are slidably connected by clamps and anchor wire ropes and are sunk to the riverbed in turn.
[0012] The beneficial effects of the utility model are:
[0013] 1) The utility model provides a pulley block and a temporary anchoring end for lowering the concrete anchor block through a launching gantry. Two pulley blocks and two anchoring ends are arranged on the launching gantry. Meanwhile, two mutually perpendicular anchor block lifting rings are arranged on the concrete block anchor. Thus, the conversion of the lifting system can be realized, which is convenient for the initial lifting and positioning of the concrete anchor block before it is officially lowered.
[0014] 2) In the utility model, the first concrete anchor block to be lowered is fixed at the bottom end of the anchor wire rope. When subsequent concrete anchor blocks are lowered, they are all slidably connected through the clamp ring and the anchor wire rope. The tonnage of the gravity anchor is increased by increasing the number of concrete block anchors, thereby avoiding the problem that the construction conditions required for a single gravity anchor are too high and difficult to implement. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is the layout diagram of gravity anchor in water;
[0016] Figure 2 Strengthen the large-scale drawings for cargo ships;
[0017] Figure 3 This is the large-scale drawing of the launching gantry;
[0018] Figure 4 This is the front view of the launching gantry;
[0019] Figure 5 This is the large drawing of the concrete anchor block;
[0020] Figure 6 Schematic diagram of launching the first concrete block anchor;
[0021] Figure 7 This is a schematic diagram of the first concrete block anchor being launched into place;
[0022] Figure 8 Schematic diagram of launching the second concrete block anchor;
[0023] Fig. 9 Schematic diagram of launching the second concrete block anchor into place.
[0024] Explanation of the reference numerals: concrete block anchor 01, pier platform 02, double-wall steel cofferdam 03, cargo ship 04, strip steel flat joint 05, plate steel flat joint 06, launching gantry 07, winch 08, truck crane 09, reinforced panel 10, counterweight 11, first lifting ring of anchor block 12, second lifting ring of anchor block 13, anchoring wire rope 14, first pulley block 15, anchor block launching anchor end 16, anchor block lowering anchor end 17, snap ring 18, second pulley block 19, lowering wire rope 20. DETAILED DESCRIPTION
[0025] The utility model is further described below in conjunction with the embodiments. The description of the following embodiments is only used to help understand the utility model. It should be pointed out that for ordinary people in this technical field, the utility model can also be modified in some ways without departing from the principle of the utility model, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.
[0026] Embodiment 1
[0027] As an example, Figures 2 to 5 As shown, this deep-water, uncovered double-wall steel cofferdam gravity anchoring construction device in the reservoir area includes: a cargo ship 04, a strip steel flat joint 05 and a plate steel flat joint 06. The two cargo ships 04 are parallel and connected to each other through the strip steel flat joint 05 and the plate steel flat joint 06. The two ends of the strip steel flat joint 05 are respectively fixed to the ends of the two cargo ships 04. The assembly platform formed by the two plate steel flat joints 06 is arranged on the inner side of the two strip steel flat joints 05, corresponding to the positions of the main trusses and small trusses of the cargo ship 04 panels.
[0028] A truck crane 09 and a winch 08 are provided on the cargo ship 04; the truck crane 09 is used for the initial lifting and auxiliary positioning of the concrete block anchor 01, and the winch 08 is used for actually controlling the lowering of the concrete block anchor 01; the truck crane 09 and the winch 08 are respectively provided on two cargo ships 04, and a counterweight 11 is provided on the cargo ship 04 where the winch 08 is located, for balancing the weight of the truck crane 09.
[0029] In this embodiment, two 200t cargo ships are spliced into a whole by using double HN700*300*13 / 24 steel strips 05 and HN400*200*8 / 13 steel plates 06. After the splicing is completed, a 25t truck crane 09 is installed on one ship. The arm length of truck crane 09 is 28.68m. When the operating range is 13m, the maximum lifting weight is 6.5t. When the operating range is 20m, the maximum lifting weight is 3.2t. A 35t counterweight 11 is installed in a symmetrical position on the other ship. The concrete block anchor 01 to be launched can be placed on the HN400*200 steel flat joint. The net distance between the two cargo ships 04 is 4m. The elevation at the riverbed is lower than 1846.0.
[0030] A launching gantry 07 is fixed in the middle between the two cargo ships 04, and a lowering port for the concrete block anchor 01 is provided in the launching gantry 07. Two assembly platforms are arranged on both sides of the launching gantry 07 parallel to the length direction of the cargo ships 04, for construction workers to stand and for the concrete block anchor 01 to be lowered.
[0031] The two sides of the launching gantry 07 facing the cargo ship 04 are respectively formed by plate-shaped steel flat joints 06 to form an assembly platform for placing the concrete block anchor 01; the two mutually perpendicular surfaces of the concrete block anchor 01 are respectively provided with a first anchor block lifting ring 12 and a second anchor block lifting ring 13; the lifting rings are obtained by bending two φ20mm HRB400 round steel bars.
[0032] The top of the launch gantry 07 extends to just above the lower opening; Figure 4 As shown, the main beam of the launching gantry is double-jointed HN400*200, the diagonal brace is double-jointed C25a channel steel, and a 10cm diameter round hole is opened in the middle of the main beam for passing the anchor wire rope 14. An anchor block launching anchor end 16 is arranged above the top of the launching gantry 07, a first pulley block 15 is arranged below the top, and an anchor block lowering anchor end 17 and a second pulley block 19 are arranged on the opposite sides of the lowering opening, wherein the second pulley block 19 is arranged on the side of the launching gantry 07 close to the winch 08.
[0033] Embodiment 2
[0034] As another embodiment, the second embodiment proposes, on the basis of the first embodiment, that the double-walled steel cofferdam 03 is assembled or floated in place, a trestle platform 02 is provided on one side of the double-walled steel cofferdam 03, a winch is provided on the trestle platform 02, the double-walled steel cofferdam 03 is tightened by the winch on the side close to the trestle platform 02, and the other directions are provided with anchoring force by the construction method of the double-walled steel cofferdam gravity anchoring construction device in deep water without covering layer in the reservoir area, such as Figure 1 shown.
[0035] like Figure 6 and Figure 7 As shown, when the first concrete block anchor 01 is lowered, the hook of the truck crane 09 is connected to the first lifting ring 12 of the anchor block at the top of the concrete block anchor 01, and the concrete block anchor 01 is lifted to below the first pulley block 15. At this time, the second lifting ring 13 of the anchor block is horizontal, and the winch 08 is connected to the anchor wire rope 14. The anchor wire rope 14 uses a 6×37+FC type steel wire rope with a nominal diameter of 50mm and a nominal tensile strength of 1960MPa.
[0036] The end of the anchoring wire rope 14 is turned through the first pulley group 15 and anchored on the anchor block lifting ring 13. After the anchoring wire rope 14 is tightened by the winch 08, the truck crane 09 is unhooked to complete the lifting system conversion. At this time, the concrete block anchor 01 is pulled by the winch 08 and the anchoring wire rope 14, and the second lifting ring 13 of the anchor block is vertically controlled by the winch 08 to lower the first concrete block anchor 01 to the riverbed, and then the anchoring wire rope 14 is removed from the winch 08.
[0037] When only a single concrete block anchor 01 is needed, the top of the anchor wire rope 14 is connected to the buoy, and when more concrete block anchors 01 need to be lowered, the top of the anchor wire rope 14 is temporarily anchored to the anchor block launching anchor end 16 at the top of the launching gantry 07.
[0038] In this embodiment, the tonnage of the gravity anchor is increased by increasing the number of concrete block anchors 01, and 14 concrete block anchors 01 with a length, width and height of 1.5*1.5*1m are lowered in sequence, which can functionally replace one concrete block anchor with a length, width and height of 4*4*2m, and avoid the problem of limited construction equipment and difficulty in deployment in the prior art, thereby reducing construction costs and shortening construction periods.
[0039] like Figure 8 and Fig. 9 As shown: the hook of the automobile crane 09 is connected to the anchor block lifting ring 12 of the new concrete block anchor 01, and the concrete block anchor 01 is lifted to a predetermined position; at this time, the second lifting ring 13 of the anchor block is horizontal.
[0040] The hoist 08 is connected to the lowering wire rope 20, which is a 6*19+1 wire rope with a nominal diameter of 14mm and a nominal tensile strength of 1400MPa. The end of the lowering wire rope 20 passes through the second pulley block 19 and then passes through the second lifting ring 13 of the anchor block, and then is anchored on the lowering anchor end 17 of the anchor block; after the hoist 08 tightens the lowering wire rope 20, the truck crane 09 is unhooked, the second lifting ring 13 of the anchor block rotates to the vertical plane, and the lifting system of the concrete block anchor 01 is converted, and the height is completely controlled by the hoist 08.
[0041] The first lifting ring 12 of the anchor block is slidably connected with the clamp ring 18 and the anchor wire rope 14, so that the concrete block anchor 01 is indirectly connected with other concrete block anchors 01 that have fallen to the riverbed surface; the concrete block anchor 01 is lowered by the winch 08 and the pulley block 19 until the concrete block anchor 01 is placed in place on the riverbed surface.
[0042] The end of the lowering wire rope 20 connected to the lowering anchor end 17 of the anchor block is released, and the wire rope 20 is rolled up by the winch 08. The free end of the wire rope 20 passes through the second lifting ring 13 of the anchor block and is finally completely recovered to the winch 08, waiting for the next lowering of the concrete block anchor 01.
[0043] It should be noted that the parts in this embodiment that are the same or similar to those in the second embodiment can be referenced to each other and will not be described in detail in this application.
[0044] 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.
Claims
1. A gravity anchor bed construction device for double-walled steel cofferdam in deep water without covering layer in reservoir area, characterized in that: include: Cargo ship, strip steel parallel joint and plate steel parallel joint, two cargo ships are parallel and connected to each other through strip steel parallel joint and plate steel parallel joint, and the cargo ship is equipped with a car crane and a winch; A launching gantry is fixed in the middle between the two cargo ships. A lowering opening for a concrete block anchor is arranged in the launching gantry. Both sides of the launching gantry are respectively connected by plate-shaped steel sections to form an assembly platform for placing the concrete block anchor. The two surfaces of the concrete block anchor perpendicular to each other are respectively provided with a first lifting ring of the anchor block and a second lifting ring of the anchor block. The top of the launching gantry extends to just above the lowering port; an anchor block launching anchor end is provided above the top of the launching gantry, a first pulley block is provided below the top, and an anchor block lowering anchor end and a second pulley block are provided at opposite side edges of the lowering port, respectively, wherein the second pulley block is provided on the side of the launching gantry close to the winch.
2. The gravity anchor bed construction device for double-walled steel cofferdam in deep water without covering layer in reservoir area according to claim 1 is characterized in that: The truck crane and winch are installed on two cargo ships respectively, and the cargo ship where the winch is located is equipped with a counterweight.
3. The gravity anchor bed construction device for double-walled steel cofferdam in deep water without covering layer in reservoir area according to claim 1 is characterized in that: The two ends of the strip-shaped steel parallel connection are respectively fixed on the ends of the two cargo ships, and the two assembly platforms formed by the plate-shaped steel parallel connection are respectively arranged on the inner sides of the two strip-shaped steel parallel connections.
4. The gravity anchor bed construction device for double-walled steel cofferdam in deep water without covering layer in reservoir area according to claim 1 is characterized in that: The concrete block anchor is alternately connected to a truck crane or a winch through a first lifting ring of the anchor block or a second lifting ring of the anchor block.
5. The gravity anchor bed construction device for double-walled steel cofferdam in deep water without covering layer in reservoir area according to claim 1 is characterized in that: The anchoring end of the anchor block is connected with an anchor wire rope, and the bottom end of the anchor wire rope is fixedly connected to the second lifting ring of the anchor block of a concrete block anchor. The first lifting rings of the anchor blocks of several concrete block anchors are slidably connected by clamps and anchor wire ropes and are sunk on the riverbed in turn.