Anti-floating device for continuous wall construction reinforcement cage in soft stratum

Abstract

The utility model relates to the technical field of continuous wall construction tools, and discloses an anti-floating device of a continuous wall construction reinforcement cage in a soft stratum, which comprises the anti-floating device, the reinforcement cage and a guide wall, an anti-floating bar is arranged in the guide wall of the continuous wall, downward pressure is applied to the reinforcement cage from the upper part of the reinforcement cage, and an anti-floating plate is arranged at the lower part of the reinforcement cage. The gravity of the anti-floating plate is adopted to apply downward pulling force to the reinforcement cage, the reinforcement cage can be effectively prevented from floating upwards, displacement or floating upwards is effectively prevented when the reinforcement cage is poured in a soft stratum, the periphery and the interior of the reinforcement cage can be evenly and tightly filled with concrete, and the pouring quality of the continuous wall is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of continuous wall construction tools, in particular to an anti-floating device for a steel cage used in continuous wall construction in soft strata. Background Art

[0002] The soil formed by the interaction between land and sea is diverse, with fine, small, and loose structures, and various soil types are distributed in an interlaced manner. Diaphragm walls are mainly set in sedimentary strata such as silt, silty soil layers, silty fine sand layers, and medium-coarse sand. Such strata have unstable characteristics such as high fluidity, low permeability, and high compressibility, and are subject to risks of quicksand, collapse, water gushing, collapse, uneven settlement, disintegration when exposed to water, and a sharp decrease in strength. During the construction of diaphragm wall steel cages, as precast concrete components, the steel cages have many internal voids and a low specific gravity. They are easily affected by buoyancy and float, causing their position to shift. At the same time, the buoyancy of concrete and mud during pouring can also cause the steel cages to float, resulting in uneven concrete pouring, voids, mud inclusions, and other defects, which in turn affect the overall structural stability of the diaphragm wall. Most existing steel cages use concrete cake anti-floating plates as anti-floating devices. In weak strata, due to the high instability of the strata and the limited space available for installing the anti-floating plates in the steel cages, the concrete cake anti-floating plates cannot provide sufficient anti-floating effect. Summary of the Invention

[0003] The purpose of the utility model is to provide an anti-floating device for a steel cage in continuous wall construction in a soft stratum, so as to solve the problem that the existing concrete cake anti-floating plate proposed in the above background technology cannot provide sufficient anti-floating effect.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] An anti-floating device for a steel cage for continuous wall construction in a soft stratum comprises an anti-floating device, a steel cage and a guide wall, the anti-floating device comprising an anti-floating bar arranged on the guide wall and an anti-floating plate arranged on the steel cage, the anti-floating bar comprising a pressure bar and a clamping mechanism; a lifting lug is provided on the upper portion of the steel cage, and the anti-floating plate is provided inside; the guide wall comprises a top surface and side surfaces symmetrically arranged on the left and right, at least one clamping mechanism is provided on each of the left and right top surfaces of the guide wall, both ends of the pressure bar are respectively passed through the left and right clamping mechanisms, and the steel cage is suspended in the middle of the pressure bar through the lifting lug.

[0006] Furthermore, the clamping mechanism includes a bracket, a connecting sleeve, and a hanging and pressing handle. The bracket consists of a circular ring and a number of legs arranged under the circular ring; a connecting sleeve is provided on the inner ring of the circular ring of the bracket, and an internal thread is provided in the connecting sleeve. The hanging and pressing handle consists of a screw and a handle. The hanging and pressing handle is passed through the connecting sleeve and moves up and down through the thread to adjust the vertical position of the pressure bar.

[0007] Furthermore, the pressure bar includes a bar body and locking hooks on both sides of the bar body. The bar body is a circular steel tube, and the locking hooks are arc-shaped locking hooks extending inward, which are used to lock the two ends of the pressure bar to the clamping mechanism.

[0008] Furthermore, the steel cage includes a plurality of vertical main bars and a plurality of transverse stirrups, and the plurality of stirrups bind the main bars into a cubic steel cage. The upper portion of the steel cage is provided with a plurality of lifting ears, and the interior is provided with a plurality of anti-floating plates.

[0009] Furthermore, the anti-floating plate includes a plate body, and rectangular grooves are respectively provided at the four corners of the plate body. Two fixing holes are provided in each of the grooves, and the two fixing holes are respectively provided at the diagonal corners of the grooves.

[0010] Furthermore, the anti-floating plate also includes a plurality of reinforcing transverse ribs, and both ends of each of the reinforcing transverse ribs are horizontally connected to the relatively arranged main ribs. A plurality of reinforcing longitudinal ribs are arranged between adjacent reinforcing transverse ribs, and the connection between the reinforcing transverse ribs and the reinforcing longitudinal ribs is a reinforcing node.

[0011] Furthermore, the fixing holes of the anti-floating plate body are connected to the reinforcement nodes via U-shaped bolts.

[0012] Furthermore, two anti-floating plates are evenly arranged in the middle of the steel cage at a distance of 1 to 1.2 m from the bottom of the trough.

[0013] Furthermore, the reinforcing transverse ribs are welded to the plate body of the anti-floating plate.

[0014] Furthermore, the clamping mechanism is provided parallel to the lifting ears of the steel cage at a distance of 20 to 30 cm from the left and right edges of the top surface of the guide wall.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The anti-floating device of the utility model adopts an anti-floating bar arranged in the guide wall of the continuous wall to apply downward pressure to the steel cage from the upper part, and an anti-floating plate is installed at the lower part of the steel cage. The gravity of the anti-floating plate applies downward pulling force to the steel cage, which can effectively prevent the steel cage from floating up.

[0017] The anti-floating bar adopts a combined design of a pressure bar and a clamping mechanism. The clamping mechanism is pre-installed on the top surface of the guide wall. The pressure bar is then passed through the lifting ears of the steel cage and fixed to the clamping mechanism at both ends. The position of the pressure bar is adjusted by the lifting handle of the clamping mechanism to control the lifting ears on the steel cage to prevent it from displacement.

[0018] An anti-floating plate is set inside the steel cage, and a grid structure formed by reinforced transverse and longitudinal reinforcements is used to connect the anti-floating plate, which improves the anti-shear and anti-torsion capabilities of the anti-floating plate and the anti-floating ability of the steel cage;

[0019] In summary, by setting up the anti-floating device, the steel cage can be effectively prevented from displacement or floating when pouring in soft strata, so that the concrete can be evenly and tightly filled around and inside the steel cage, ensuring the pouring quality of the continuous wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the anti-floating device of the utility model;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the pressing mechanism of the utility model;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the movable pressure bar of the utility model;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the steel cage of the utility model;

[0024] Figure 5 This is a schematic diagram of the anti-floating plate structure of the utility model;

[0025] Figure 6 This is a top view of the steel cage and anti-floating plate of the utility model;

[0026] In the figure: 100-guide wall, 110-top surface, 120-side, 200-rebar cage, 210-lifting ear, 220-main reinforcement, 230-stirrup, 300-anti-floating device, 310-anti-floating bar, 311-pressure bar, 3111-bar body, 3112-lock hook, 312-pressing mechanism, 3121-bracket, 31211-ring, 31212-support leg, 3122-connecting sleeve, 3123-lifting handle, 31231-screw, 31232-handle, 320-anti-floating plate, 321-plate body, 322-groove, 323-fixing hole, 324-reinforced transverse reinforcement, 325-reinforced longitudinal reinforcement, 326-U-bolt. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] like Figure 1As shown, an anti-floating device for a steel cage for continuous wall construction in a soft stratum comprises an anti-floating device 300, a steel cage 200 and a guide wall 100, wherein the guide wall 100 is arranged on both sides and the top of the pre-excavated groove of the continuous wall, the anti-floating device 300 comprises an anti-floating bar 310 arranged on the guide wall 100 and an anti-floating plate 320 arranged on the steel cage 200, the anti-floating bar 310 comprises a pressure bar 311 and a clamping mechanism 312; a lifting ear 210 is provided on the upper part of the steel cage 200, and the anti-floating plate 320 is provided inside; the guide wall 100 comprises a top surface 110 and a side surface 120 symmetrically arranged on the left and right, at least one clamping mechanism 312 is respectively provided on the left and right top surfaces 110 of the guide wall 100, the two ends of the pressure bar 311 are respectively passed through the left and right clamping mechanisms 312, and the steel cage 200 is suspended in the middle of the pressure bar 311 through the lifting ear 210.

[0029] like Figure 2 As shown, the clamping mechanism 312 includes a bracket 3121, a connecting sleeve 3122, and a hanging and pressing handle 3123. The bracket 3121 is composed of a circular ring 31211 and a plurality of legs 31212 arranged under the circular ring 31211; a connecting sleeve 3122 is provided on the inner circle of the circular ring 31211 of the bracket 3121, and an internal thread is provided in the connecting sleeve 3122. The hanging and pressing handle 3123 is composed of a screw 31231 and a handle 31232. The hanging and pressing handle 3123 is passed through the connecting sleeve 3122 and moves up and down through the thread to adjust the vertical position of the pressure bar 311.

[0030] like Figure 3 As shown, the pressure bar 311 includes a bar body 3111 and locking hooks 3112 on both sides of the bar body 3111. The bar body 3111 is a circular steel tube with high strength and good torsion resistance. The locking hooks 3112 are arc-shaped locking hooks 3112 extending inward, which are used to lock the two ends of the pressure bar 311 to the clamping mechanism 312, which is simple and convenient for construction workers to operate.

[0031] like Figure 4 As shown, the steel cage 200 includes a plurality of vertical main bars 220 and a plurality of transverse stirrups 230. The stirrups 230 bind the main bars 220 into a cubic steel cage 200. The upper portion of the steel cage 200 is provided with a plurality of lifting ears 210, and a plurality of anti-floating plates 320 are provided inside.

[0032] like Figure 5-6 As shown, the anti-floating plate 320 includes a plate body 321 , and rectangular grooves 322 are respectively provided at the four corners of the plate body 321 . Two fixing holes 323 are provided in each of the grooves 322 , and the two fixing holes 323 are respectively provided at the diagonal corners of the groove 322 .

[0033] like Figure 5-6 As shown, the anti-floating plate 320 also includes a plurality of reinforcing transverse ribs 324, and both ends of each of the reinforcing transverse ribs 324 are horizontally connected to the relatively arranged main ribs 220, and a plurality of reinforcing longitudinal ribs 325 are provided between adjacent reinforcing transverse ribs 324, and the connection between the reinforcing transverse ribs 324 and the reinforcing longitudinal ribs 325 is a reinforcing node.

[0034] like Figure 5-6 As shown, the fixing holes 323 of the plate body 321 of the anti-floating plate 320 are connected to the reinforcement node through U-shaped bolts 326. The rectangular grooves 322 and the fixing holes 323 at the four corners of the plate body 321 of the anti-floating plate 320 are designed so that the anti-floating plate 320 can be conveniently fixed to the reinforcement node of the steel cage 200 through the U-shaped bolts 326.

[0035] In some embodiments, two anti-floating plates 320 are evenly arranged in the middle of the steel cage 200 at a distance of 1 to 1.2 m from the bottom of the trough.

[0036] In some embodiments, the reinforcing transverse ribs 324 are welded to the plate body 321 of the anti-floating plate 320 , further enhancing the stability of the connection of the anti-floating plate 320 .

[0037] In some embodiments, the clamping mechanism 312 is provided parallel to the lifting lug 210 of the steel cage 200 at a distance of 20 to 30 cm from the left and right edges of the top surface 110 of the guide wall 100 .

[0038] In some embodiments, after the steel cage 200 of the guide wall 100 is tied, the pressing mechanism 312 is installed on the steel cage 200 of the guide wall 100 .

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-floating device for a steel cage used in continuous wall construction in soft strata, comprising an anti-floating device, a steel cage, and a guide wall, characterized in that: The anti-floating device includes an anti-floating bar arranged on the guide wall and an anti-floating plate arranged on the steel cage, the anti-floating bar includes a pressure bar and a clamping mechanism; a lifting ear is provided on the upper part of the steel cage, and the anti-floating plate is provided inside; the guide wall includes a top surface and a side surface arranged symmetrically on the left and right, and at least one clamping mechanism is provided on each of the left and right top surfaces of the guide wall, the two ends of the pressure bar are respectively passed through the left and right clamping mechanisms, and the steel cage is suspended in the middle of the pressure bar through the lifting ear.

2. The anti-floating device for a steel cage for continuous wall construction in a soft stratum according to claim 1, characterized in that: The clamping mechanism includes a bracket, a connecting sleeve, and a hanging and pressing handle. The bracket consists of a circular ring and a number of legs arranged under the circular ring. A connecting sleeve is provided on the inner ring of the circular ring of the bracket, and an internal thread is provided in the connecting sleeve. The hanging and pressing handle consists of a screw and a handle. The hanging and pressing handle is passed through the connecting sleeve and moves up and down through the thread to adjust the vertical position of the pressure bar.

3. The anti-floating device for a steel cage for continuous wall construction in a soft stratum according to claim 1, characterized in that: The pressure bar includes a bar body and locking hooks on both sides of the bar body. The bar body is a circular steel tube, and the locking hooks are arc-shaped locking hooks extending inward, which are used to lock the two ends of the pressure bar onto the clamping mechanism.

4. The anti-floating device for a steel cage for continuous wall construction in a soft stratum according to claim 1, characterized in that: The steel cage includes a plurality of vertical main bars and a plurality of transverse stirrups. The stirrups bind the main bars together to form a cubic steel cage. The upper portion of the steel cage is provided with a plurality of lifting ears, and the interior of the cage is provided with a plurality of anti-floating plates.

5. The anti-floating device for steel cages used in continuous wall construction in soft strata according to claim 1, characterized in that: The anti-floating plate comprises a plate body, wherein four corners of the plate body are respectively provided with rectangular grooves, each of the grooves is provided with two fixing holes, and the two fixing holes are respectively provided at the diagonal corners of the grooves.

6. The anti-floating device for a steel cage for continuous wall construction in a soft stratum according to claim 4, characterized in that: The anti-floating plate also includes a plurality of reinforcing transverse ribs, and both ends of each reinforcing transverse rib are horizontally connected to the oppositely arranged main ribs. A plurality of reinforcing longitudinal ribs are provided between adjacent reinforcing transverse ribs, and the connection between the reinforcing transverse ribs and the reinforcing longitudinal ribs is a reinforcing node.

7. The anti-floating device for a steel cage for continuous wall construction in a soft stratum according to claim 6, characterized in that: The fixing holes of the anti-floating plate body are connected to the reinforcement nodes through U-shaped bolts.

8. The anti-floating device for a steel cage for continuous wall construction in a soft stratum according to claim 7, characterized in that: In the middle of the steel cage, two anti-floating plates are evenly arranged at a distance of 1 to 1.2 m from the bottom of the trough.

9. The anti-floating device for a steel cage for continuous wall construction in a soft stratum according to claim 6, characterized in that: The reinforcing transverse ribs are welded to the plate body of the anti-floating plate.

10. The anti-floating device for a steel cage for continuous wall construction in a soft stratum according to claim 1, characterized in that: The clamping mechanisms are respectively arranged 20 to 30 cm away from the left and right edges of the top surface of the guide wall and are parallel to the lifting ears of the steel cage.

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