Anti-streaming device at top of H-shaped steel joint of diaphragm wall and construction method of anti-streaming device

Abstract

The invention discloses an underground diaphragm wall H-shaped steel joint top anti-streaming device and a construction method thereof.The underground diaphragm wall H-shaped steel joint top anti-streaming device comprises a slurry baffle vertically arranged at the top of an H-shaped steel joint, an overflow hole is formed in the slurry baffle, the distance from the overflow hole to the bottom of the slurry baffle is matched with the over-grouting height of an underground diaphragm wall, and a clamp for clamping the H-shaped steel joint is installed at the bottom of the slurry baffle; the width of the slurry baffle is matched with the width of the H-shaped steel joint; the sector plate is used for blocking a gap between the mortar baffle and two guide walls of the underground diaphragm wall, one side of the sector plate is hinged to the mortar baffle, the width of the sector plate is larger than that of the gap, and an elastic pushing piece used for pushing the sector plate to enable the other side of the sector plate to abut against the side faces of the guide walls is installed between the sector plate and the mortar baffle; and the carrying pole beam is installed at the top of the slurry baffle, the two ends of the carrying pole beam are placed on the two guide walls, and lifting lugs are installed on the carrying pole beam. The invention solves the problem of difficult interception of over-poured concrete at the top of the diaphragm wall.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a bypass prevention device at the top of an H-shaped steel joint of a ground-connected wall and a construction method thereof. Background Art

[0002] According to the investigation of relevant projects, the following problems exist during the pouring of ground-connected wall concrete:

[0003] 1) It is difficult to intercept the overfilled concrete at the top of the ground-connected wall. Formwork is often used on site to intercept the overfilled concrete, and top bypass flow occurs frequently.

[0004] 2) The height of over-filled concrete on the top of the ground-anchored wall is measured in the mud, and the elevation control accuracy is poor. If the height is not exceeded enough, there will be too much concrete floating slurry on the top of the ground-anchored wall and the strength will not meet the standard, or if the over-filling is too high, concrete will be wasted, which will directly affect the quality of the project and is not in line with the concept of green environmental protection. Summary of the invention

[0005] In order to overcome the defects of the prior art, a bypass prevention device for the top of the H-shaped steel joint of the ground-connected wall and a construction method thereof are provided to solve the problem of difficulty in intercepting the over-pouring concrete at the top of the ground-connected wall.

[0006] In order to achieve the above-mentioned purpose, a device for preventing flow bypass at the top of an H-shaped steel joint of a ground-connected wall is provided, comprising:

[0007] A slurry retaining plate is vertically arranged on the top of the H-shaped steel joint, the slurry retaining plate is provided with an overflow hole, the distance from the overflow hole to the bottom of the slurry retaining plate is adapted to the overfilling height of the ground-connected wall, a clamp clamped on the H-shaped steel joint is installed at the bottom of the slurry retaining plate, and the width of the slurry retaining plate is adapted to the width of the H-shaped steel joint;

[0008] A fan plate used to block the gap between the slurry retaining plate and the two guide walls of the ground-connected wall, one side of the fan plate is hinged to the slurry retaining plate, the width of the fan plate is greater than the width of the gap, and an elastic pushing member used to push the fan plate so that the other side of the fan plate is pressed against the side of the guide wall is installed between the fan plate and the slurry retaining plate;

[0009] A shoulder pole beam is installed on the top of the slurry retaining plate, two ends of the shoulder pole beam are placed on the two guide walls, and lifting ears are installed on the shoulder pole beam.

[0010] Furthermore, the slurry retaining plate includes left and right flanges and a web connected between the left and right flanges, and the width of the web is adapted to the width of the web of the H-shaped steel joint.

[0011] Furthermore, a plurality of overflow holes spaced apart in the vertical direction are provided on the web of the slurry guard plate, a gate plate is liftable on the web of the slurry guard plate, a slurry passing hole is provided on the gate plate, the slurry passing hole is aligned with an overflow hole, and a lifting mechanism for driving the gate plate is installed on the web of the slurry guard plate.

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

[0013] Furthermore, the lifting mechanism comprises:

[0014] A reel rotatably mounted on the web of the slurry retaining 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, both ends of which are respectively connected to opposite sides of the slurry guard plate, a clamping space is formed between the two arc-shaped rods, and the H-shaped steel joint is embedded in the clamping space.

[0018] The present invention provides a construction method for a bypass flow prevention device at the top of an H-shaped steel joint of a ground-connected wall, comprising the following steps:

[0019] The slurry guard plate is hoisted by the lifting lugs so that the slurry guard plate is vertically arranged on the top of the H-shaped steel joint;

[0020] Clamp the slurry retaining plate with a clamp at the H-shaped steel joint, place the two ends of the shoulder beam on the two guide walls, and turn the fan plate so that the other side of the fan plate is pressed against the side of the guide wall;

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

[0022] The beneficial effect of the present invention is that the anti-circumvention device for the top of the H-shaped steel joint of the ground-connected wall of the present invention starts from the problem of concrete top bypass during the pouring of ground-connected wall concrete, and innovatively utilizes the combination of slurry retaining plate + elastic push piece + fan plate to form an elastic lock to prevent concrete from flowing away from the gap between the slurry retaining plate and the guide wall, thereby realizing side bypass prevention. In the middle of the slurry retaining plate, an overflow hole is set according to the over-filling height, so as to realize slurry discharge and more accurately control the over-filling height of the ground-connected wall. At the same time, a clamp is set at the bottom of the slurry retaining plate to realize the fixation of the slurry retaining plate and the quick installation of the H-shaped steel joint. The technical implementation effect of the present invention is good, and it can well realize the top anti-circumvention interception and over-filling height control during the pouring of the ground-connected wall. It has strong applicability, is easy to use, and has good technical effect. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0024] Figure 1 It is a schematic structural diagram of a flow bypass prevention device at the top of an H-shaped steel joint of a ground-connected wall according to an embodiment of the present invention.

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

[0026] Figure 3 for Figure 2 Cross-sectional view at AA in .

[0027] Figure 4 for Figure 2 Cross-sectional view at BB in .

[0028] Figure 5 Schematic diagram of the structure of the gate according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] Reference Figures 1 to 5 As shown, the present invention provides a device for preventing flow bypass at the top of an H-shaped steel joint of a ground-connected wall, comprising: a slurry retaining plate 1, a fan plate 2, and a shoulder beam 3.

[0032] In this embodiment, the H-shaped steel joint is an H-shaped steel. The slurry guard plate 1 is vertically arranged on the top of the H-shaped steel joint 4. The slurry guard plate 1 is provided with an overflow hole 10. The distance from the overflow hole 10 to the bottom of the slurry guard plate 1 is adapted to the overfilling height of the ground-connected wall. A clamp 11 clamped to the H-shaped steel joint 4 is installed at the bottom of the slurry guard plate 1. The width of the slurry guard plate 1 is adapted to the width of the H-shaped steel joint 4.

[0033] The fan plate 2 is movably arranged in the gap between the slurry retaining plate 1 and the two guide walls 5 of the ground-connected wall. The fan plate is used to block the gap between the slurry retaining plate 1 and the two guide walls 5 of the ground-connected wall. One side of the fan plate 2 is hinged to the slurry retaining plate 1. The width of the fan plate 2 is greater than the width of the gap. The fan plate and the inner side surface of the guide wall are arranged at an angle. An elastic push member 21 is installed between the fan plate 2 and the slurry retaining plate 1. The elastic push member 21 is used to push the fan plate 2 so that the other side of the fan plate 2 is pressed against the side of the guide wall 5.

[0034] As a preferred implementation, the elastic pushing member 21 is a spring.

[0035] In some embodiments, the fan plate is mounted on both sides of the slurry guard plate by torsion spring hinges.

[0036] The shoulder pole beam 3 is installed on the top of the slurry retaining plate 1. The two ends of the shoulder pole beam 3 are placed on the two guide walls 5. The shoulder pole beam 3 is equipped with a lifting lug 31.

[0037] In this embodiment, the slurry guard 1 includes left and right flanges and a web connected between the left and right flanges. The width of the web is adapted to the width of the web of the H-shaped steel joint. The slurry guard is an H-shaped steel. The width of the left and right flanges of the slurry guard is less than the width of the flange of the H-shaped steel joint. The slurry guard is arranged in the same direction as the H-shaped steel joint.

[0038] A plurality of overflow holes 10 are provided on the web of the slurry retaining plate 1. The plurality of overflow holes 10 are arranged at intervals in the vertical direction. A gate plate 7 is provided on the web of the slurry retaining plate 1 so as to be able to be raised and lowered. A slurry hole is provided on the gate plate 7. The slurry hole is aligned with an overflow hole 10. A lifting mechanism for driving the gate plate 7 is installed on the web of the slurry retaining plate 1. The lifting mechanism lifts and lowers the gate plate so that the slurry hole of the gate plate 7 is aligned with an overflow hole 10 on the web of the slurry retaining plate 1, thereby making the overflow hole flush with the liquid level a of the overfilled concrete of the ground-connected wall.

[0039] See also Figure 5 As shown, the opposite sides of the left and right flanges are formed with a limiting member 6. A slide groove is formed between the limiting member 6 and the web. The gate plate 7 is slidably arranged in the slide 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 slurry retaining 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] As a preferred embodiment, the clamp 11 includes two arc-shaped rods. The two ends of the two arc-shaped rods are respectively connected to the opposite sides of the slurry guard plate 1. A clamping space is formed between the two arc-shaped rods. The H-shaped steel joint 4 is embedded in the clamping space.

[0043] The present invention provides a construction method for a bypass flow prevention device at the top of an H-shaped steel joint of a ground-connected wall, comprising the following steps:

[0044] S1. The slurry retaining plate 1 is hoisted through the lifting lug 31 so that the slurry retaining plate 1 is vertically arranged on the top of the H-shaped steel joint 4.

[0045] S2. Clamp the clamp 11 of the slurry guard plate 1 on the H-shaped steel joint 4, place the two ends of the shoulder beam 3 on the two guide walls 5, and turn the fan plate 2 toward the inner side of the slurry guard plate so that the other side of the fan plate 2 is pressed against the side of the guide wall 5.

[0046] S3, pouring concrete on the inner side of the slurry retaining plate 1, the liquid level a of the concrete is flush with the overflow hole 10, so that the slurry is discharged to the outer side of the slurry retaining plate 1 through the overflow hole 10.

[0047] Before pouring concrete, the motor drives the drum to rotate, and the drum retracts and releases the sling, so that the gate plate slides vertically in the chute, and then the slurry hole of the gate plate 7 is aligned with an overflow hole 10 on the web of the slurry retaining plate 1. When the over-concrete is poured later, this overflow hole is flush with the liquid level a of the over-concrete of the ground-connected wall.

[0048] The transverse section of the slurry retaining plate is the same as the section size of the H-shaped steel joint of the ground-connected wall, achieving a perfect fit.

[0049] A fan plate is arranged on the flange plate of the slurry retaining plate, and the opening of the fan plate faces the side where concrete is poured. When pouring the ground-connected wall concrete, the concrete is prevented from flowing out from between the device and the guide wall, thereby realizing the anti-bypass function.

[0050] The fan plate and the flange plate of the slurry retaining plate are connected by a spring hinge. The influence of construction errors is eliminated according to the angle of the spring hinge, so that the fan plate is close to the guide wall, which is highly practical.

[0051] A shoulder pole beam is arranged on the top of the slurry retaining plate. The length of the shoulder pole beam is greater than the thickness of the ground-connected wall. The auxiliary pole is placed on the guide walls on both sides to prevent the plate from falling into the pit of the ground-connected wall due to improper operation.

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

[0053] The distance from the bottom of the slurry retaining plate to the overflow hole is the same as the over-filling height of the ground-connected wall, so the over-filling height can be accurately determined.

[0054] The top of the slurry baffle is welded with a lifting lug to facilitate the installation and lifting of the flow bypass device.

[0055] A plurality of overflow holes are arranged in the middle of the web of the slurry retaining plate. During the concrete pouring process, the slurry in the groove of the ground-connected wall flows out from the overflow holes, preventing the slurry liquid surface from overflowing from the top of the guide wall and polluting the environment.

[0056] The distance between the bottom of the bypass device and the overflow hole is the same as the over-filling height of the ground-anchored wall. When the concrete liquid level is poured to the overflow hole elevation, all the slurry flows out of the overflow hole. It can be seen intuitively that the concrete liquid level has reached the over-filling height required by the design, and the concrete pouring can be stopped. The over-filling height is accurately controllable, eliminating the inaccuracy of liquid level measurement during underwater concrete pouring.

[0057] The anti-circumvention device for the top of the H-shaped steel joint of the ground-connected wall of the present invention is based on the problem of concrete top bypass during the pouring of ground-connected wall concrete, and innovatively utilizes the combination of a slurry retaining plate + an elastic push piece + a fan plate to form an elastic lock to prevent concrete from flowing away from the gap between the slurry retaining plate and the guide wall, thereby achieving side bypass prevention. In the middle of the slurry retaining plate, an overflow hole is set according to the over-filling height, so that the over-filling height of the ground-connected wall can be more accurately controlled while slurry is discharged. At the same time, a clamp is set at the bottom of the slurry retaining plate to fix the slurry retaining plate and quickly install the H-shaped steel joint. The technical implementation effect of the present invention is good, and it can well realize the top bypass prevention and over-filling height control during the pouring of the ground-connected wall. It has strong applicability, is easy to use, and has good technical effects.

[0058] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A device for preventing flow bypass at the top of an H-shaped steel joint of a ground-connected wall, characterized in that: include: A slurry retaining plate is vertically arranged on the top of the H-shaped steel joint, the slurry retaining plate is provided with an overflow hole, the distance from the overflow hole to the bottom of the slurry retaining plate is adapted to the overfilling height of the ground-connected wall, a clamp clamped on the H-shaped steel joint is installed at the bottom of the slurry retaining plate, and the width of the slurry retaining plate is adapted to the width of the H-shaped steel joint; A fan plate used to block the gap between the slurry retaining plate and the two guide walls of the ground-connected wall, one side of the fan plate is hinged to the slurry retaining plate, the width of the fan plate is greater than the width of the gap, and an elastic pushing member used to push the fan plate so that the other side of the fan plate is pressed against the side of the guide wall is installed between the fan plate and the slurry retaining plate; A shoulder pole beam is installed on the top of the slurry retaining plate, two ends of the shoulder pole beam are placed on the two guide walls, and lifting ears are installed on the shoulder pole beam.

2. The anti-circumference device at the top of the H-shaped steel joint of the ground-connected wall according to claim 1 is characterized in that: The slurry retaining plate comprises left and right flanges and a web connected between the left and right flanges, and the width of the web is adapted to the width of the web of the H-shaped steel joint.

3. The anti-circumference device at the top of the H-shaped steel joint of the ground-connected wall according to claim 2 is characterized in that: The web of the slurry guard plate is provided with a plurality of overflow holes spaced apart in the vertical direction, a gate plate is provided on the web of the slurry guard plate so as to be liftable, a slurry passing hole is provided on the gate plate, the slurry passing hole is aligned with an overflow hole, and a lifting mechanism for driving the gate plate is installed on the web of the slurry guard plate.

4. The anti-circumference device at the top of the H-shaped steel joint of the ground-connected wall according to claim 3 is characterized in that: A limiting piece is formed on opposite sides of the left and right flanges, a sliding groove is formed between the limiting piece and the web, and the gate plate is slidably arranged in the sliding groove.

5. The anti-circumference device at the top of the H-shaped steel joint of the ground-connected wall according to claim 4 is characterized in that: The lifting mechanism comprises: A reel rotatably mounted on the web of the slurry retaining plate; A sling, one end of which is connected to the drum, and the other end of which is connected to the gate.

6. The anti-circumference device at the top of the H-shaped steel joint of the ground-connected wall according to claim 1 is characterized in that: The elastic pushing member is a spring.

7. The anti-circumference device at the top of the H-shaped steel joint of the ground-connected wall according to claim 1 is characterized in that: The clamp comprises two arc-shaped rods, two ends of which are respectively connected to the opposite sides of the slurry retaining plate, a clamping space is formed between the two arc-shaped rods, and the H-shaped steel joint is embedded in the clamping space.

8. A construction method for the anti-circumference device at the top of the H-shaped steel joint of the ground-connected wall according to any one of claims 1 to 7, characterized in that: The following steps are involved: The slurry guard plate is hoisted by the lifting lugs so that the slurry guard plate is vertically arranged on the top of the H-shaped steel joint; Clamp the slurry retaining plate with a clamp at the H-shaped steel joint, place the two ends of the shoulder beam on the two guide walls, and turn the fan plate so that the other side of the fan plate is pressed against the side of the guide wall; Concrete is poured on the inner side of the slurry retaining plate, and the liquid surface of the concrete is flush with the overflow hole, so that the slurry is discharged to the outer side of the slurry retaining plate through the overflow hole.

Images