An assembled construction platform and construction method for underwater dam

Abstract

The present invention belongs to the technical field of engineering construction equipment, and relates to an assembled construction platform for underwater embankments, including a shaped steel platform and a sand filling mechanism, wherein the sand filling mechanism includes a fixed sand filling beam, a movable sand filling beam and a slide rail, wherein the fixed sand filling beam is fixedly installed on the inner ring of the shaped steel platform, and slide rails are arranged at both ends of the inner ring of the shaped steel platform, and a movable sand filling beam parallel to the fixed sand filling beam is slidably installed on the slide rail, and the fixed sand filling beam and the movable sand filling beam are connected to the sand filling pipe through a sand filling pump respectively. It also relates to an assembled construction method for underwater embankments, wherein the filling bag can be stably and automatically unfolded by the arrangement of the movable sand filling beam and the slide rail, and the problem of large error and easy deviation caused by manual pulling can be avoided. When filling, the four corners of the filling bag are filled first, and then the filling bag is gradually filled to the middle of the filling bag, so that the filling bag is stably positioned, and the problem of deviation during filling can be avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering construction equipment, and relates to a construction platform, in particular to an assembled construction platform and a construction method for underwater dams. Background Art

[0002] The land area of ​​a certain berth project is the former ash storage area of ​​the power plant (now a water area), with a land area of ​​about 53.85 hectares, and the surrounding boundaries are built with embankments. The land area of ​​this project is formed by dredged materials from the harbor, and the filling elevation is +7.637m (foundation). After the filling is completed, the surface is covered with a mixture of mountain soil and stone to meet the needs of subsequent construction equipment entering the site.

[0003] In order to ensure the safety and stability of the existing dikes, it is necessary to repair and reinforce the existing dikes, and at the same time, the original power plant ash storage area (water area) is filled in stages. The "filling separation dike" is used for the filling and partitioning of the site. The dike adopts the underwater filling bag construction process, the filling material is the harbor material, and the bag body is made of 120g / ㎡ plastic flat wire woven geotextile. The dike engineering volume is 68,500 m³.

[0004] Since the construction area is located in the water, there is no foothold for the surrounding equipment. The conventional steel pipe positioning method and the simple floating row method are manually pulled, and the error is large. In case of wind, waves, and currents, it is very easy to have overall deviation. Therefore, the existing construction method has problems such as poor positioning accuracy, low safety, and difficult operation. It is necessary to consider the actual site and construction difficulties, and study a new assembled construction platform and construction method for underwater embankments. Summary of the invention

[0005] The purpose of the present invention is to provide an assembled construction platform and construction method for underwater dams, which have scientific and reasonable structural design, high positioning accuracy, strong safety, convenient construction and easy implementation.

[0006] The present invention solves the technical problem by the following technical solutions:

[0007] An assembled construction platform for underwater dams, characterized in that it includes a shaped steel platform, a positioning mechanism, an electric bag sinking mechanism and a sand filling mechanism. The positioning mechanism is installed at the four corners of the upper part of the shaped steel platform, and the electric bag sinking mechanism is arranged at intervals around the upper part of the shaped steel platform. The sand filling mechanism includes a fixed sand filling beam, a movable sand filling beam and a slide rail. A fixed sand filling beam is fixedly installed at one end in the width direction of the inner ring of the shaped steel platform, and slide rails are arranged at both ends in the length direction of the inner ring of the shaped steel platform. A movable sand filling beam parallel to the fixed sand filling beam is slidably installed on the slide rail, and the fixed sand filling beam and the movable sand filling beam are connected to the sand filling pipe through sand filling pumps respectively.

[0008] Moreover, sand filling ports are evenly spaced on the fixed sand filling crossbeam and the movable sand filling crossbeam, and sand filling heads with built-in valves are installed at the sand filling ports.

[0009] Moreover, the fixed sand-filling beam and the movable sand-filling beam are both tubular structures, one end of the tubular structure is connected to the sand-filling pipe, and the other end is sealed, the internal cavity of the tubular structure gradually increases from the end close to the sand-filling pipe to the end away from the sand-filling pipe, and the sand filling port gradually increases from the end close to the sand-filling pipe to the end away from the sand-filling pipe.

[0010] Moreover, the shaped steel platform comprises platform sections, quick-connect joints and buoys. Two platform sections are connected by quick-connect joints, and a buoy is arranged at the bottom of each platform section.

[0011] Moreover, the positioning mechanism includes a winch and an anchor. The winches are installed at the four corners of the shaped steel platform, and each winch is connected to an anchor.

[0012] Moreover, the electric bag sinking mechanism includes an electric hoist, and the electric hoists are evenly spaced on the shaped steel platform.

[0013] Furthermore, it also comprises a moving platform, which is formed by connecting a plurality of platform sections through quick-insertion joints, and the platform sections at both ends are slidably mounted on the slide rails.

[0014] Moreover, a storage platform is installed at one end of the sand-filled cross beam fixed on the outer ring of the shaped steel platform, and staggered platforms are installed at both ends of the outer ring of the shaped steel platform in the length direction.

[0015] An assembled construction method for underwater dams, characterized in that it comprises the following steps:

[0016] S1: On land, each single-piece platform section is tied and connected with the buoy. After being put into the water, the operator takes a small boat to connect two single-piece platform sections with quick-connect connectors according to the actual needs on site to form a standardized steel platform that meets the size of the corresponding filling bag. Similarly, the installation of the staggered platform, storage platform and mobile platform is completed;

[0017] S2: Connect four winches to the four corners of the steel platform with bolts and fix anchors on the winches;

[0018] S3: Use a small boat to drag the assembled steel platform to the construction waters;

[0019] S4: Use a small boat to drop the anchor in a figure eight shape;

[0020] S5: Position the shaped steel platform and move it by means of the winch anchor cable;

[0021] S6: transport the customized filling bags to the storage platform by boat;

[0022] S7: Arrange the filled bags on the storage platform so that one end of the filled bags in the width direction is connected to the fixed sand-filling beam and the other end of the filled bags in the width direction is connected to the movable sand-filling beam, and then the filled bags are unfolded in the fixed steel platform by moving the movable sand-filling beam;

[0023] S8: Separate the unfolded filling bag from the fixed sand-filling beam and the movable sand-filling beam, and then connect them to the electric hoist;

[0024] S9: Connect the sand inlets of the fixed sand-filling beam and the movable sand-filling beam to the sand-filling pipe, connect the sand-filling head to the cuff of the filling bag, start the sand-blowing pump, and pump sand from the cuffs at both ends of the filling bag to the middle in sequence;

[0025] S10: According to the actual situation on site, release the electric hoist at intervals of ten to twenty minutes to achieve accurate sinking of the filling bag;

[0026] S11: After completing the filling of one filling bag, repeat S5 to S10;

[0027] S12: After completing all construction tasks, the steel platform will be towed to the shore, and the sand filling mechanism, electric bag sinking mechanism and positioning mechanism will be dismantled in turn. Then the steel platform will be disassembled into single-piece platform sections, hoisted to land, and the platform sections and buoys will be separated.

[0028] Furthermore, the method of connecting the sand inlets of the fixed sand-filling beam and the movable sand-filling beam to the sand-filling pipe, connecting the sand-filling head to the cuff of the filling bag, starting the sand-blowing pump, and pumping sand from the cuffs at both ends of the filling bag to the middle in sequence is as follows:

[0029] S9.1: Connect the sand filling heads on the fixed sand filling beam and the movable sand filling beam to the cuffs at both ends of the filling bag respectively, close the sand filling head valves in the middle of the fixed sand filling beam and the movable sand filling beam, open the sand filling head valves at both ends, start the sand blowing pump, and complete the sand filling at the four corners of the filling bag;

[0030] S9.2: Open the sand filling beam and the sand filling head valve in the middle of the movable sand filling beam, and continue to fill the filling bag. When both ends of the filling bag reach the filling height requirement, the sand filling pump at the fixed sand filling beam is closed;

[0031] S9.3: Move the movable sand filling beam, and with the help of the movable platform, complete the connection between the sand filling head on the movable sand filling beam and the cuff on the filling bag, so as to fill the unfilled part until the entire filling bag is filled to the required height.

[0032] The advantages and beneficial effects of the present invention are:

[0033] The assembled construction platform and construction method for underwater dams can stably and automatically unfold the filling bags by moving the sand-filling crossbeam and the slide rail, thus avoiding the problems of large errors and easy deviations caused by manual pulling.

[0034] At the same time, by designing the shaped steel platform as a single-piece spliced ​​structure, it can be adjusted according to the size of the filling bag to be filled to meet the use requirements of different working conditions.

[0035] When filling, first fill the four corners of the filling bag, and then gradually fill the middle of the filling bag, so that the filling bag is stably positioned to avoid the problem of deviation during filling.

[0036] The mobile platform plays a role of supporting the staff. When the middle part of the filling bag needs to be filled, the mobile platform can be moved to the corresponding position. The staff stands on the mobile platform to complete the connection between the sand filling head on the mobile sand filling beam and the cuff of the filling bag, thereby improving the filling efficiency.

[0037] Compared with the steel pipe positioning method and the simple floating row method, the assembled construction platform and construction method for underwater dams are convenient, safe, and highly accurate. At the same time, the assembled shaped steel platform is simple to make, easy to install and disassemble, and easy to transport. At the same time, the production cost is low, the use effect is good, and it has good economic benefits and construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A top view of the present invention;

[0039] Figure 2 A side view of the present invention in the width direction;

[0040] Figure 3 It is the front view of the present invention.

[0041] Reference numerals

[0042] 1-wire rope, 2-winch, 3-shaped steel platform, 4-stray platform, 5-mobile sand-filled beam, 6-mobile platform, 7-fixed sand-filled beam, 8-storage platform, 9-electric slider, 10-slide rail, 11-buoy. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below through specific examples. The following examples are only illustrative and not restrictive, and the protection scope of the present invention cannot be limited thereto.

[0044] An assembled construction platform for underwater dams, the innovation of which lies in: comprising a shaped steel platform 3, a positioning mechanism, an electric bag sinking mechanism and a sand filling mechanism, the shaped steel platform is used to shape the filling bags to be filled and provide an operating position for the staff; the positioning mechanism is used to position the shaped steel platform; the electric bag sinking mechanism is used to gradually lower the filled filling bags; the sand filling mechanism is used to fill sand into the filling bags.

[0045] In order to facilitate transportation, storage and adaptability to different working conditions, the shaped steel platform is an assembled structure, which includes a platform section, a quick-connect joint and a buoy 11. The size of the platform section is 6m long and 0.8m wide. The two platform sections are connected by quick-connect joints. The quick-connect joints can use common plastic buckles. The two platform sections can be quickly connected by connecting the male and female heads. A buoyant buoy is provided at the bottom of each platform section. The buoy has a diameter of 0.8m and a length of 0.9m and is tied under the platform section by a strap. The large platform can freely adjust the number of assembled platform sections according to on-site needs.

[0046] A platform section is installed at one end of the sand-filled beam fixed on the outer ring of the shaped steel platform, and the enlarged area forms a storage platform 8. A platform section is installed in the middle position of both ends of the outer ring of the shaped steel platform in the length direction, and the enlarged area there forms a staggered platform 4.

[0047] Positioning mechanisms are installed at the four corners of the upper part of the shaped steel platform. The positioning mechanisms include a winch 2 and a 200kg anchor. Winches are installed at the four corners of the shaped steel platform by bolts, and each winch is connected to an anchor by a steel wire rope 1 to assist the ship in anchoring.

[0048] Electric bag sinking mechanisms are arranged at intervals around the upper part of the shaped steel platform. The electric bag sinking mechanisms include electric hoists. Electric hoists are arranged at intervals of 2m on the shaped steel platform, and the electric hoists are connected to the filling bags.

[0049] The sand filling mechanism includes a fixed sand filling beam 7, a movable sand filling beam 5 and a slide rail 10. A fixed sand filling beam is fixedly installed at one end of the inner ring width direction of the shaped steel platform, and slide rails are installed at both ends of the inner ring length direction of the shaped steel platform by bolts. A movable sand filling beam parallel to the fixed sand filling beam is slidably installed on the slide rail. The fixed sand filling beam and the movable sand filling beam are connected to the sand filling pipe through sand filling pumps respectively.

[0050] The filling bag is evenly spaced with sand filling ports on the fixed sand filling beam and the movable sand filling beam, and a sand filling head with a built-in valve is installed at the sand filling port.

[0051] The fixed sand-filling beam and the movable sand-filling beam are both steel pipes with a diameter of 10 cm. Sand inlets are provided at the ends of the fixed sand-filling beam and the movable sand-filling beam, and the sand inlets are connected to the sand-filling pipe. A cuff connected to the sand-filling port is provided on the filling bag every 3 meters.

[0052] In order to ensure the uniformity of filling the filling bag, the inner cavity of the steel pipe gradually increases from the end close to the sand filling pipe to the end away from the sand filling pipe, and the sand filling port gradually increases from the end close to the sand filling pipe to the end away from the sand filling pipe.

[0053] In order to facilitate the staff to connect the middle cuff to the mobile sand-filling beam, a mobile platform 6 is designed to support the staff. The mobile platform is composed of several platform sections connected by quick-plug connectors, and the platform sections at both ends are slidably installed on the slide rails.

[0054] In order to facilitate the movement of the mobile sand-filled beam and the mobile platform on the slide rail, electric sliders 9 are provided at both ends of the mobile sand-filled beam and the mobile platform. The electric sliders realize the movement and position adjustment of the mobile sand-filled beam and the mobile platform on the slide rail through remote control of the staff.

[0055] An assembly construction method for underwater dams, the innovation of which is that it includes the following steps:

[0056] S1: On land, each single-piece platform section is tied and connected with the buoy. After being put into the water, the operator takes a small boat to connect two single-piece platform sections with quick-connect connectors according to the actual needs on site to form a standardized steel platform that meets the size of the corresponding filling bag. Similarly, the installation of the staggered platform, storage platform and mobile platform is completed;

[0057] S2: Connect four winches to the four corners of the steel platform with bolts and fix anchors on the winches;

[0058] S3: Use a small boat to drag the assembled steel platform to the construction waters;

[0059] S4: Use a small boat to drop the anchor in a figure eight shape;

[0060] S5: Position the shaped steel platform and move it by means of the winch anchor cable;

[0061] S6: transport the customized filling bags to the storage platform by boat;

[0062] S7: The staff arranges the filling bags on the storage platform. The filling bags are rectangular bag structures. After arrangement, one end of the bag in the width direction is connected to the fixed sand-filling beam, and the other end in the width direction is connected to the movable sand-filling beam. Then, the filling bags are unfolded in the fixed steel platform by moving the movable sand-filling beam.

[0063] S8: Separate the unfolded filling bag from the fixed sand-filling beam and the movable sand-filling beam, and then connect them to the electric hoist;

[0064] S9: Connect the sand inlet of the fixed sand-filling beam and the movable sand-filling beam to the sand-filling pipe, connect the sand-filling head to the cuff of the filling bag, start the sand-blowing pump, and pump sand from the cuffs at both ends of the filling bag to the middle in sequence. Specifically:

[0065] S9.1: Connect the sand filling heads on the fixed sand filling beam and the movable sand filling beam to the cuffs at both ends of the filling bag respectively, close the sand filling head valves in the middle of the fixed sand filling beam and the movable sand filling beam, open the sand filling head valves at both ends, start the sand blowing pump, and complete the sand filling at the four corners of the filling bag;

[0066] S9.2: Open the sand filling beam and the sand filling head valve in the middle of the movable sand filling beam, and continue to fill the filling bag. When both ends of the filling bag reach the filling height requirement, the sand filling pump at the fixed sand filling beam is closed;

[0067] S9.3: Move the movable sand filling beam, and with the help of the movable platform, complete the connection between the sand filling head on the movable sand filling beam and the cuff on the filling bag, so as to fill the unfilled part until the entire filling bag is filled to the required height.

[0068] S10: According to the actual situation on site, release the electric hoist at intervals of ten to twenty minutes to achieve accurate sinking of the filling bag;

[0069] S11: After completing the filling of one filling bag, repeat S5 to S10;

[0070] S12: After completing all construction tasks, the steel platform will be towed to the shore, and the sand filling mechanism, electric bag sinking mechanism and positioning mechanism will be dismantled in turn. Then the steel platform will be disassembled into single-piece platform sections, hoisted to land, and the platform sections and buoys will be separated.

[0071] The present invention is suitable for the construction of embankments in waters with wind, waves or currents. Conventional steel pipe positioning methods and simple floating row construction methods are difficult to achieve accurate positioning of filling bags.

[0072] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. An assembled construction method for underwater dams, characterized in that: The method is implemented based on an assembled construction platform for underwater dams, the assembled construction platform for underwater dams comprising a shaped steel platform (3), a positioning mechanism, an electric bag sinking mechanism and a sand filling mechanism, wherein the positioning mechanism is installed at the four corners of the upper part of the shaped steel platform (3), the electric bag sinking mechanism is arranged at intervals around the upper part of the shaped steel platform (3), the sand filling mechanism comprises a fixed sand filling crossbeam (7), a movable sand filling crossbeam (5) and a slide rail (10), and the shaped steel platform (3) is provided with a plurality of electric bag sinking mechanisms. ) is fixedly mounted at one end of the inner ring width direction of the shaped steel platform (3), and slide rails (10) are arranged at both ends of the inner ring length direction of the shaped steel platform (3). A movable sand-filling beam (5) parallel to the fixed sand-filling beam (7) is slidably mounted on the slide rails (10), and the fixed sand-filling beam (7) and the movable sand-filling beam (5) are respectively connected to the sand-filling pipe via a sand-filling pump; the electric bag sinking mechanism comprises an electric hoist, and the electric hoists are evenly spaced on the shaped steel platform (3); The assembled construction method for underwater dams comprises the following steps: S1: On land, each single-piece platform section is tied to a buoy (11) and connected. After being put into water, an operator takes a small boat to connect two single-piece platform sections through quick-connect connectors according to actual needs on site, so as to form a standardized steel platform (3) that meets the size of the corresponding filling bag. Similarly, the installation of the staggered platform (4), the storage platform (8) and the mobile platform (6) is completed; S2: Connect four winches (2) to the four corners of the shaped steel platform (3) by means of bolts, and fix anchors on the winches (2); S3: Towing the assembled steel platform (3) to the construction waters by a small boat; S4: Use a small boat to drop the anchor in a figure eight shape; S5: Positioning the shaped steel platform (3) and moving it by means of the anchor cable of the winch (2); S6: transporting the customized filling bag to the storage platform (8) by a small boat; S7: Arrange the filled bags on the storage platform (8) so that one end of the filled bags in the width direction is connected to the fixed sand-filling beam (7) and the other end of the filled bags in the width direction is connected to the movable sand-filling beam (5), and then the movable sand-filling beam (5) is moved to complete the deployment of the filled bags in the fixed steel platform (3); S8: separating the unfolded filling bag from the fixed sand-filling beam (7) and the movable sand-filling beam (5), and then connecting them to the electric hoist; S9: Connect the sand inlets of the fixed sand-filling beam (7) and the movable sand-filling beam (5) to the sand-filling pipe, connect the sand-filling head to the cuff of the filling bag, start the sand-blowing pump, and pump sand from the cuffs at both ends of the filling bag to the middle in sequence; S10: According to the actual situation on site, release the electric hoist at intervals of ten to twenty minutes to achieve accurate sinking of the filling bag; S11: After completing the filling of one filling bag, repeat S5 to S10; S12: After all construction tasks are completed, the shaped steel platform (3) is towed to the shore, the sand filling mechanism, the electric bag sinking mechanism and the positioning mechanism are dismantled in sequence, and then the shaped steel platform (3) is disassembled into a single platform section, which is hoisted to land, and the platform section and the buoy (11) are separated; The method of connecting the sand inlet of the fixed sand-filling beam (7) and the movable sand-filling beam (5) to the sand-filling pipe, connecting the sand-filling head to the cuff of the filling bag, starting the sand-blowing pump, and pumping sand from the cuffs at both ends of the filling bag to the middle in sequence is as follows: S9.1: Connect the sand filling heads on the fixed sand filling beam (7) and the movable sand filling beam (5) to the cuffs at both ends of the filling bag respectively, close the sand filling head valves in the middle of the fixed sand filling beam (7) and the movable sand filling beam (5), open the sand filling head valves at both ends, start the sand blowing pump, and complete the sand filling at the four corners of the filling bag; S9.2: Open the sand filling head valves at the middle of the fixed sand filling beam (7) and the movable sand filling beam (5), and continue to fill the filling bag. When both ends of the filling bag reach the filling height requirement, the sand filling pump at the fixed sand filling beam (7) is turned off; S9.3: Move the movable sand filling beam (5), and with the help of the movable platform (6), complete the connection between the sand filling head on the movable sand filling beam (5) and the upper cuff of the filling bag, so as to fill the unfilled part until the entire filling bag is filled to the required height.

2. The method for assembling underwater dams according to claim 1, characterized in that: Sand filling ports are evenly spaced on the fixed sand filling crossbeam (7) and the movable sand filling crossbeam (5), and sand filling heads with built-in valves are installed at the sand filling ports.

3. The method for assembling underwater dams according to claim 2, characterized in that: The fixed sand-filling crossbeam (7) and the movable sand-filling crossbeam (5) are both tubular structures, one end of the tubular structure is connected to the sand-filling pipe, and the other end is sealed, the internal cavity of the tubular structure gradually increases from the end close to the sand-filling pipe to the end away from the sand-filling pipe, and the sand-filling port gradually increases from the end close to the sand-filling pipe to the end away from the sand-filling pipe.

4. The method for assembling underwater dams according to claim 1, characterized in that: The shaped steel platform (3) comprises a platform section, a quick-connect joint and a buoy (11), wherein two platform sections are connected via quick-connect joints, and a buoy (11) is provided at the bottom of each platform section.

5. The method for assembling underwater dams according to claim 1, characterized in that: The positioning mechanism comprises a winch (2) and an anchor. The winches (2) are installed at the four corners of the shaped steel platform (3), and each winch (2) is connected to an anchor.

6. The method for assembling underwater dams according to claim 1, characterized in that: It also comprises a mobile platform (6), which is formed by connecting a plurality of platform sections via quick-insert connectors, and the platform sections at both ends are slidably mounted on the slide rails (10).

7. The method for assembling underwater dams according to claim 1, characterized in that: A storage platform (8) is installed at one end of the sand-filled cross beam (7) fixed on the outer ring of the shaped steel platform (3), and staggered platforms (4) are installed at both ends of the outer ring of the shaped steel platform (3) in the length direction.

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