Anti-circulation device at top of diaphragm wall H-shaped steel joint and construction method thereof

Abstract

The application discloses a diaphragm wall H-shaped steel joint top anti-flowing device and a construction method thereof, which comprises a slurry blocking plate vertically arranged at the top of the H-shaped steel joint, wherein the slurry blocking plate is provided with an overflow hole, the distance from the overflow hole to the bottom of the slurry blocking plate is matched with the over-pouring height of the diaphragm wall, the bottom of the slurry blocking plate is provided with a clamp clamped on the H-shaped steel joint, and the width of the slurry blocking plate is matched with the width of the H-shaped steel joint; a fan plate used for blocking the gap between the slurry blocking plate and the two guide walls of the diaphragm wall, one side of the fan plate is hinged to the slurry blocking plate, the width of the fan plate is greater than the width of the gap, and an elastic pushing piece is arranged between the fan plate and the slurry blocking plate and used for pushing the fan plate so that the other side of the fan plate is pressed against the side face of the guide wall; and a carrying beam is arranged at the top of the slurry blocking plate, the two ends of the carrying beam are placed on the two guide walls, and a lifting lug is arranged on the carrying beam. The application solves the problem of difficulty in intercepting over-poured concrete at the top of the diaphragm wall.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a device for preventing flow around the top of an H-shaped steel joint in a diaphragm wall and its construction method. Background Technology

[0002] According to relevant engineering investigations, the following problems exist during the concrete pouring construction of diaphragm walls:

[0003] 1) It is difficult to intercept the over-poured concrete at the top of the diaphragm wall. On site, formwork is often used for interception, and the phenomenon of flow bypassing the top frequently occurs.

[0004] 2) The height of the over-poured concrete at the top of the diaphragm wall is measured in mud, resulting in poor elevation control accuracy. Exceeding or falling short of the height will cause excessive laitance and insufficient strength in the concrete at the top of the diaphragm wall, or over-pouring will waste concrete, directly affecting the quality of the project and not in line with the concept of green environmental protection. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, a top anti-flow device for the H-shaped steel joint of a diaphragm wall and its construction method are provided to solve the problem of difficulty in intercepting over-poured concrete at the top of the diaphragm wall.

[0006] To achieve the above objectives, a top anti-flow device for the H-beam joint of a diaphragm wall is provided, comprising:

[0007] A grout baffle is erected on top of the H-beam joint. The grout baffle has an overflow hole. The distance from the overflow hole to the bottom of the grout baffle is adapted to the over-grouting height of the diaphragm wall. A clamp is installed at the bottom of the grout baffle to hold the H-beam joint. The width of the grout baffle is adapted to the width of the H-beam joint.

[0008] A fan plate is used to seal the gap between the baffle plate and the two guide walls of the diaphragm wall. One side of the fan plate is hinged to the baffle plate. The width of the fan plate is greater than the width of the gap. An elastic pushing member is installed between the fan plate and the baffle plate to push the fan plate so that the other side of the fan plate presses against the side of the guide wall.

[0009] A spreader beam is installed on top of the slurry baffle, with both ends of the spreader beam resting on the two guide walls, and lifting lugs are installed on the spreader beam.

[0010] Furthermore, the slurry baffle includes left and right flanges and a web connecting the left and right flanges, the width of which is adapted to the width of the web of the H-beam joint.

[0011] Furthermore, the web of the baffle plate is provided with multiple overflow holes spaced vertically, and the web of the baffle plate is provided with a gate plate that can be raised and lowered. The gate plate is provided with slurry passage holes, which are aligned with an overflow hole. The web of the baffle plate is equipped with a lifting mechanism for driving the gate plate.

[0012] Furthermore, limiting members are formed on opposite sides of the left and right flanges, and a sliding groove is formed between the limiting members and the web plate, in which the gate plate is slidably disposed.

[0013] Furthermore, the lifting mechanism includes:

[0014] A drum is rotatably mounted on the web of the baffle plate;

[0015] A sling, one end of which is connected to the drum and the other end of which is connected to the gate.

[0016] Furthermore, the elastic pushing member is a spring.

[0017] Furthermore, the clamp includes two arc-shaped rods, the two ends of which are respectively connected to the opposite sides of the baffle plate, and a clamping space is formed between the two arc-shaped rods. The H-shaped steel joint is embedded in the clamping space.

[0018] This invention provides a construction method for an anti-flow device on the top of an H-shaped steel joint in a diaphragm wall, comprising the following steps:

[0019] The slurry baffle is hoisted using lifting lugs, so that the slurry baffle is vertically positioned at the top of the H-beam joint;

[0020] Clamp the baffle plate to the H-beam joint and place it on the two guide walls at both ends. Rotate the fan plate so that the other side of the fan plate presses against the side of the guide wall.

[0021] Concrete is poured into the inner side of the baffle plate, and the liquid level of the concrete is flush with the overflow hole, so that the slurry is discharged to the outer side of the baffle plate through the overflow hole.

[0022] The beneficial effects of this invention are as follows: The top anti-flow device for the H-shaped steel joint of the diaphragm wall addresses the problem of concrete flowing around the top during the diaphragm wall concrete pouring process. It innovatively utilizes a combination of a baffle plate, an elastic jacking component, and a fan plate to form an elastic locking joint, preventing concrete from flowing away through the gap between the baffle plate and the guide wall, thus achieving side anti-flow. An overflow hole is set in the middle of the baffle plate according to the over-pouring height, achieving grout discharge while more precisely controlling the over-pouring height of the diaphragm wall. Simultaneously, a clamp is set at the bottom of the baffle plate to achieve fixation of the baffle plate and quick installation of the H-shaped steel joint. This invention has good implementation effects, effectively achieving top anti-flow interception and over-pouring height control during diaphragm wall pouring. It has strong applicability, is easy to use, and has excellent technical effects. Attached Figure Description

[0023] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of the anti-flow device at the top of the H-shaped steel joint of the diaphragm wall according to an embodiment of the present invention.

[0025] Figure 2 This is a front view of the anti-flow device at the top of the H-shaped steel joint of the diaphragm wall according to an embodiment of the present invention.

[0026] Figure 3 for Figure 2 The sectional view at point AA.

[0027] Figure 4 for Figure 2 The sectional view at point BB.

[0028] Figure 5 This is a schematic diagram of the gate structure according to an embodiment of the present invention. Detailed Implementation

[0029] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] Reference Figures 1 to 5 As shown, the present invention provides a top anti-flow device for the H-shaped steel joint of a diaphragm wall, comprising: a baffle plate 1, a fan plate 2, and a spreader beam 3.

[0032] In this embodiment, the H-beam joint is an H-beam. A grout baffle 1 is vertically mounted on top of the H-beam joint 4. The grout baffle 1 has an overflow hole 10. The distance from the overflow hole 10 to the bottom of the grout baffle 1 is adapted to the over-grouting height of the diaphragm wall. A clamp 11 is installed at the bottom of the grout baffle 1 to hold the H-beam joint 4. The width of the grout baffle 1 is adapted to the width of the H-beam joint 4.

[0033] The fan plate 2 is movably disposed in the gap between the baffle plate 1 and the two guide walls 5 of the diaphragm wall. The fan plate is used to seal the gap between the baffle plate 1 and the two guide walls 5 of the diaphragm wall. One side of the fan plate 2 is hinged to the baffle plate 1. The width of the fan plate 2 is greater than the width of the gap. The fan plate is set at an angle to the inner side of the guide wall. An elastic pusher 21 is installed between the fan plate 2 and the baffle plate 1. The elastic pusher 21 is used to push the fan plate 2 so that the other side of the fan plate 2 presses against the side of the guide wall 5.

[0034] As a preferred embodiment, the elastic pusher 21 is a spring.

[0035] In some embodiments, the fan plates are mounted on both sides of the baffle plate via torsion spring hinges.

[0036] The spreader beam 3 is installed on top of the grout baffle 1. Both ends of the spreader beam 3 rest on the two guide walls 5. Lifting lugs 31 are installed on the spreader beam 3.

[0037] In this embodiment, the grout baffle 1 includes left and right flanges and a web connecting the left and right flanges. The width of the web is adapted to the width of the web of the H-beam joint. The grout baffle is an H-beam. The width of the left and right flanges of the grout baffle is smaller than the width of the flange plates of the H-beam joint. The grout baffle and the H-beam joint are arranged in the same direction.

[0038] The web of the grout baffle 1 has multiple overflow holes 10. These overflow holes 10 are spaced vertically. A gate 7 is vertically movable on the web of the grout baffle 1. The gate 7 has grout passage holes aligned with one of the overflow holes 10. A lifting mechanism for driving the gate 7 is installed on the web of the grout baffle 1. The lifting mechanism raises and lowers the gate 7, aligning the grout passage hole of the gate 7 with one of the overflow holes 10 on the web of the grout baffle 1, thereby making this overflow hole flush with the surface a of the over-poured concrete in the diaphragm wall.

[0039] See Figure 5 As shown, limiting members 6 are formed on opposite sides of the left and right flanges. A sliding groove is formed between the limiting member 6 and the web. The gate 7 is slidably disposed in the sliding groove.

[0040] In this embodiment, the lifting mechanism includes a drum and a sling.

[0041] The drum is rotatably mounted on the web of the baffle plate 1. One end of the sling is connected to the drum. The other end of the sling is connected to the gate plate 7. The drum is driven by a motor. The output end of the motor is coaxially connected to the drum.

[0042] In a preferred embodiment, the clamp 11 includes two arc-shaped rods. The two ends of the two arc-shaped rods are respectively connected to opposite sides of the baffle plate 1. A clamping space is formed between the two arc-shaped rods. An H-beam joint 4 is embedded in the clamping space.

[0043] This invention provides a construction method for an anti-flow device on the top of an H-shaped steel joint in a diaphragm wall, comprising the following steps:

[0044] S1. The baffle plate 1 is hoisted by the lifting lug 31 so that the baffle plate 1 is erected on the top of the H-beam joint 4.

[0045] S2. Clamp the clamp 11 of the baffle plate 1 to the H-shaped steel joint 4. Place both ends of the spreader beam 3 on the two guide walls 5, and rotate the fan plate 2 towards the inside of the baffle plate so that the other side of the fan plate 2 presses against the side of the guide wall 5.

[0046] S3. Pour concrete into the inner side of the baffle plate 1, so that the liquid surface a of the concrete is flush with the overflow hole 10, so that the mud can be discharged to the outer side of the baffle plate 1 through the overflow hole 10.

[0047] Before pouring concrete, a motor drives a drum to rotate, and the drum retracts and extends the sling, causing the gate to slide vertically in the chute. This aligns the grout passage hole of the gate 7 with an overflow hole 10 on the web of the baffle plate 1. During subsequent over-pour of concrete, this overflow hole is flush with the liquid level a of the over-poured concrete in the diaphragm wall.

[0048] The transverse section of the grout baffle plate has the same dimensions as the cross section of the H-beam joint of the diaphragm wall, achieving a perfect fit.

[0049] The flange of the baffle plate is equipped with a fan plate with the opening of the fan plate facing the side where the concrete is poured. When the concrete of the diaphragm wall is poured, it prevents the concrete from flowing out between the device and the guide wall, thus achieving the function of preventing flow around the concrete.

[0050] The flanges of the fan plate and the baffle plate are connected by spring hinges. The angle of the spring hinges eliminates the influence of construction errors, making the fan plate fit tightly against the guide wall, which is highly practical.

[0051] A spreader beam is installed at the top of the grout baffle. The length of the spreader beam is greater than the thickness of the diaphragm wall. It is supported on the guide walls on both sides to prevent it from falling into the diaphragm wall pit due to improper operation.

[0052] Two arc-shaped rods of different sizes are welded to the bottom of the baffle plate. The inner and outer arc-shaped rods are clamped on both sides of the web of the H-beam joint to achieve the limiting function and prevent the baffle plate from tilting. At the same time, the shorter outer limiting end is set to an outward folded state to facilitate the insertion of the web of the H-beam joint between the inner and outer limiting rings.

[0053] The distance between the bottom of the baffle plate and the overflow hole is the same as the over-grouting height of the diaphragm wall, which allows for precise over-grouting height.

[0054] Lifting lugs are welded to the top of the baffle plate to facilitate the installation and hoisting of the flow bypass device.

[0055] Multiple overflow holes are set in the middle of the web of the baffle plate. During the concrete pouring process, the mud in the diaphragm wall trench flows out from the overflow holes to prevent the mud from overflowing from the top of the guide wall and polluting the environment.

[0056] The distance between the bottom of the flow device and the overflow hole is the same as the over-pouring height of the diaphragm wall. When the concrete level is poured to the elevation of the overflow hole, all the mud flows out from the overflow hole. It can be seen directly that the concrete level has reached the design requirement of over-pouring height, and the concrete pouring can be stopped. The over-pouring height is precise and controllable, eliminating the inaccuracy of liquid level measurement during underwater concrete pouring.

[0057] This invention relates to a top-side anti-flow device for the H-beam joint of a diaphragm wall. Addressing the issue of concrete flow around the top during diaphragm wall concrete pouring, it innovatively utilizes a combination of a baffle plate, an elastic jacking component, and a fan plate to form an elastic locking joint, preventing concrete from flowing away through the gap between the baffle plate and the guide wall, thus achieving side-side anti-flow. An overflow hole is set in the middle of the baffle plate according to the over-pouring height, enabling grout discharge while more precisely controlling the over-pouring height of the diaphragm wall. Simultaneously, a clamp is installed at the bottom of the baffle plate to achieve fixation and quick installation of the H-beam joint. This invention demonstrates good technical performance, effectively preventing top-side flow and controlling over-pouring height during diaphragm wall pouring. It is highly applicable, easy to use, and offers excellent technical results.

[0058] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A device for preventing flow around the top of a H-steel joint of a diaphragm wall, characterized in that, The application relates to a damming plate, which is vertically arranged on the top of an H-shaped steel joint, and is provided with overflow holes, the distance from the overflow holes to the bottom of the damming plate is adapted to the overfilling height of the diaphragm wall, the bottom of the damming plate is provided with a clamp clamped on the H-shaped steel joint, and the width of the damming plate is adapted to the width of the H-shaped steel joint. A fan plate is arranged for blocking the gap between the damming plate and the two guide walls of the diaphragm wall, one side of the fan plate is hinged to the damming plate, the width of the fan plate is greater than the width of the gap, and an elastic pushing piece is arranged between the fan plate and the damming plate for pushing the fan plate so that the other side of the fan plate is pressed against the side of the guide wall. A carrying beam is arranged on the top of the damming plate, and the two ends of the carrying beam are arranged on the two guide walls, and a lifting lug is arranged on the carrying beam. The damming plate comprises left and right flanges and a web plate connected between the left and right flanges, and the width of the web plate is adapted to the width of the web plate of the H-shaped steel joint.

2. The diaphragm wall H-section steel joint anti-flowing around device at the top portion according to claim 1, characterized in that, Overflow holes are arranged on the web plate of the damming plate in a vertical direction, a gate plate is arranged on the web plate of the damming plate in a lifting mode, a slurry passing hole is arranged on the gate plate and is aligned with one overflow hole, and a lifting mechanism is arranged on the web plate of the damming plate for driving the gate plate.

3. The diaphragm wall H-section steel joint anti-flowing around device at the top portion according to claim 2, characterized in that, The opposite sides of the left and right flanges form limiting pieces, and a sliding groove is formed between the limiting pieces and the web plate, and the gate plate is slidably arranged in the sliding groove.

4. The diaphragm wall H-section steel joint anti-flowing around device at the top of claim 3, characterized in that, The lifting mechanism comprises:

5. The diaphragm wall H-section steel joint anti-flowing around device at the top of claim 4, characterized in that, a winding drum rotatably arranged on the web plate of the damming plate; a lifting rope, one end of the lifting rope is connected to the winding drum, and the other end of the lifting rope is connected to the gate plate. The elastic pushing piece is a spring.

6. The slurry wall H-steel joint anti-hydrodynamic flow device of claim 1, wherein, The clamp comprises two arc-shaped rods, the two ends of the two arc-shaped rods are connected to the opposite sides of the damming plate respectively, a clamping space is formed between the two arc-shaped rods, and the H-shaped steel joint is embedded in the clamping space.

7. The slurry wall H-steel joint anti-hydrodynamic flow device of claim 1, wherein, The application further relates to a construction method, which comprises the following steps:

8. A method of constructing a top anti-swirl device for a diaphragm wall H-section steel joint according to any one of claims 1 to 7, characterised in that, hoisting the damming plate by the lifting lug so that the damming plate is vertically arranged on the top of the H-shaped steel joint; clamping the clamp of the damming plate on the H-shaped steel joint, arranging the two ends of the carrying beam on the two guide walls, and rotating the fan plate so that the other side of the fan plate is pressed against the side of the guide wall; pouring concrete on the inner side of the damming plate, and arranging the liquid surface of the concrete to be flush with the overflow holes so that the slurry is discharged to the outer side of the damming plate through the overflow holes. ​

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