CN219992492U - Device for preventing bulge collapse of external corner during grooving of underground diaphragm wall - Google Patents

Abstract

The utility model relates to a device for preventing external corner bulge from collapsing when underground diaphragm walls are grooved, which relates to the field of deep foundation pit supporting construction. The utility model has the effect of effectively preventing the external corner of the underground diaphragm wall from swelling and collapsing when forming the groove, and in addition, the device can be detached for repeated use when the external corner of the underground diaphragm wall is firmly formed because the device is detachably arranged on the external side of the external corner of the wall.

Description

Device for preventing bulge collapse of external corner during grooving of underground diaphragm wall

Technical Field

The utility model relates to the field of deep foundation pit supporting construction, in particular to a device for preventing external corner bulge from collapsing when underground continuous walls are grooved.

Background

At present, the country is rapidly advancing development and construction of underground space, urban rail transit is rapidly developed in recent years, and a plurality of underground garages, underground shops and the like are also emerging like spring bamboo shoots after rain. The supporting structure of many underground space deep foundation pit adopts the underground continuous wall, however, the external corner construction link that involves the underground continuous wall grooving is very complicated, mainly in the grooving process, the external corner collapses easily under the resultant force effect of earth-water side pressure to appear wall body bulge scheduling problem in external corner department.

The treatment method for the bulge of the external corner of the underground diaphragm wall mainly comprises two methods of reinforcing the wall of the triaxial cement mixing pile, repairing wall concrete and the like, wherein the method for reinforcing the wall of the triaxial cement mixing pile is common. The pile body soil layer and cement slurry are stirred and mixed through rotation of three stirring blades perpendicular to the drill rod, so that a continuous cement soil wall body with certain strength and strong seepage resistance is formed, and the effects of stabilizing soil and preventing soil collapse are achieved.

With respect to the above related art, the inventor considers that the external corner groove wall of the traditional mud wall protector is unstable, and there is a large risk of swelling caused by collapse, especially when the weak soil body is impacted or vibrated by external force, the groove wall corner is easy to be damaged or unstable. The method for reinforcing and repairing the wall concrete by adopting the triaxial cement mixing pile groove walls is not economical and reasonable, and is not only material-consuming, but also time-consuming and labor-consuming.

Disclosure of Invention

In order to solve the problems that external corners are impacted and collapse is caused by unstable structure and wall bulges are easy to generate when the conventional diaphragm wall is grooved, the utility model provides a device for preventing the external corners from bulging and collapsing when the diaphragm wall is grooved.

The utility model provides a device for preventing external corner bulge from collapsing when an underground diaphragm wall is grooved, which adopts the following technical scheme:

the utility model provides a prevent external corner bulge device that collapses when diaphragm wall becomes groove, installs on the external corner of diaphragm wall's cell wall, the device main part includes right riser and left riser that mutually perpendicular connects, pre-buried being provided with a plurality of anchor bolt sleeves on the guide wall at cell wall top, right riser with a plurality of anchor bolt holes have been seted up in the last penetration of left riser, a plurality of anchor bolt holes with anchor bolt sleeve one-to-one to connect through anchor bolt.

Through adopting above-mentioned technical scheme, right riser and left riser fixed connection are mutually perpendicular's right angle shape structure to with the external corner adaptation of grooving of underground diaphragm wall, anchor bolt wears to locate in the anchor bolt hole and with the anchor bolt cover internal thread connection of pre-buried in the guide wall, anchor bolt's head size is greater than the size of anchor bolt hole, so can fix the device at the external corner position of cell wall top guide wall.

Optionally, the anchor bolt holes are all arranged on the right vertical plate and the left vertical plate at intervals in the horizontal direction, and the intervals in the horizontal direction of the anchor bolt holes are 50-80cm.

Through adopting above-mentioned technical scheme, offer the anchor bolt hole in right riser and left riser be close to the position on main part top, its aim at makes the constructor when installation and dismounting device, conveniently can install or dismantle the anchor bolt in the upper portion plane of device, the anchor bolt hole should set up in the position that is close to the device middle part as far as possible under the circumstances of guaranteeing this demand simultaneously to make the anchor bolt can fix the device on the guide wall of vertical direction better.

Optionally, the size of the anchor bolt sleeve is smaller than the size of the anchor bolt hole.

Through adopting above-mentioned technical scheme, can avoid when installation device, because produce the error and make anchor bolt hole unable and anchor bolt cover perfect alignment to lead to unable installation anchor bolt's here condition, improved the installation suitability of device and guide wall.

Optionally, the upper end of main part is provided with triangle-shaped dull and stereotyped along the horizontal direction, triangle-shaped dull and stereotyped set up in right riser with the hookup location of left riser.

Through adopting above-mentioned technical scheme, the triangle-shaped flat board can provide the location effect between the guide wall for the main part of device to guarantee when installing anchor bolt, anchor bolt hole and anchor bolt cover can align, in addition, the triangle-shaped flat board has also played the effect of location protection for the external corner tip portion of grooving, in order to prevent that the device main part from displacement deformation under the impact of grooving mechanical grab machine.

Optionally, the right riser with the left riser is in keeping away from the dull and stereotyped one end of triangle-shaped is connected with the bar dull and stereotyped, the bar dull and stereotyped along the horizontal direction set up in the upper end of main part.

Through adopting above-mentioned technical scheme, set up the bar dull and stereotyped structure that can have certain reinforcement effect to the main part.

Optionally, hanging rings for connecting the hanging hooks of the crane are respectively and fixedly arranged on the triangular flat plate and the strip flat plate.

Through adopting above-mentioned technical scheme, because the overall structure of device is great, and because it is so difficult to be carried and install to be the steelworks, set up the main aim at of rings and can make the device be connected with lifting by crane equipment, when installation and dismounting device, can remove through lifting by crane equipment to reduce the consumption of using manpower.

Optionally, the vertical plane of two rings is perpendicular to the bar-shaped flat plate, and one ring is arranged in the middle of the bar-shaped flat plate.

Through adopting above-mentioned technical scheme, make the focus position of device and hoist cable be located same vertical direction, so the position of two rings of this kind of setting mode is in order to guarantee when lifting by crane the device, the device can not take place the slope or rock the condition.

Optionally, a plurality of expansion bolt holes are formed in the triangular flat plate and the strip-shaped flat plate in a penetrating mode, expansion bolts penetrate through the expansion bolt holes, and the other ends of the expansion bolts are fixed on the guide wall.

Through adopting above-mentioned technical scheme, install expansion bolts on the guide wall to make all having the fixed point on three faces of device, can strengthen being connected as an integer between device and the guide wall, in order to prevent follow-up grab bucket machine excavation grooving in-process, do not produce displacement deformation when grooving equipment collision device, know grab bucket machine dead weight 5T, grab the soil after reaching more than 8T, the impact is very big.

Optionally, the lower extreme of right riser is connected with right hypoplastron, the lower extreme of left riser is connected with left hypoplastron, left hypoplastron with right hypoplastron all to the inboard of main part is buckled, promptly to the cell wall direction buckling.

Through adopting above-mentioned technical scheme, the lower extreme of device can hug closely with the wall body, and the steel spare has certain elasticity, therefore the lower extreme of device has certain centre gripping effect to the cell wall to avoid touching the device and leading to the device damage when excavating equipment grab bucket machine digs the groove and rises.

Optionally, the bending angle of the left lower plate and the right lower plate is not more than 6 °.

Through adopting above-mentioned technical scheme, can guarantee that left lower plate and right lower plate have the centre gripping effect to the cell wall simultaneously, avoid because the angle of buckling is too big and make the main part unable laminating with the cell wall.

In summary, the utility model has the following beneficial technical effects:

the main body for protecting the external corner structure is arranged on the outer side of the external corner of the groove wall of the underground diaphragm wall, so that the external corner can be ensured to be stable in structure and not to collapse and damage when being subjected to soil-water side pressure and impact force;

the external corner structure of the groove wall is protected, and bulge collapse caused by low strength of soil body of the groove wall is improved;

the device has the advantages of reusability, namely, when the retaining wall slurry plays a role of retaining walls after the underground diaphragm wall is formed into grooves and concrete is poured after the concrete is inserted into the reinforcement cage to approach the lower edge of the steel corner protector, the anchor bolts of the side wall steel plates are discharged, the expansion bolts at the top are cut off, and then the steel corner protector is pulled out by the crane vibrating hammer so as to be applied to the next external corner of the underground diaphragm wall.

Drawings

FIG. 1 is an overall exploded view of the apparatus for preventing the collapse of the exterior corner bulge in connection with a wall body when the underground diaphragm wall is grooved according to the present utility model.

Fig. 2 is an overall view of an apparatus for preventing the collapse of the exterior corner bulge when the underground diaphragm wall is grooved according to the present utility model.

Fig. 3 is a cross-sectional view at A-A in fig. 2.

Fig. 4 is a plan view showing an apparatus for preventing the collapse of the bulge at the outside corner when the underground diaphragm wall is grooved according to the present utility model.

FIG. 5 is a cross-sectional view of an expansion bolt of an apparatus for preventing the collapse of a corner bulge in a wall body when the underground diaphragm wall is grooved according to the present utility model.

Reference numerals illustrate: 1. a wall body; 12. an anchor bolt sleeve; 13. an external corner; 2. a main body; 21. a right riser; 211. a right lower plate; 22. a left riser; 221. a left lower plate; 4. an anchor bolt hole; 41. an anchor bolt; 5. triangular flat plates; 51. a hanging ring; 52. expansion bolt holes; 53. an expansion bolt; 6. a strip-shaped flat plate.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-5.

The embodiment of the utility model discloses a device for preventing bulge and collapse of external corners when underground diaphragm walls are grooved.

Referring to fig. 1 and 2, an apparatus for preventing a diaphragm wall from swelling at a groove outside corner 13, which is installed to the wall of the diaphragm wall when the diaphragm wall is grooved, includes a main body 2.

Referring to fig. 1 and 2, in particular, the main body 2 includes a right riser 21 and a left riser 22 connected to each other vertically, and one end of the right riser 21 and one end of the left riser 22 are welded together.

Referring to fig. 1 and 2, the lower ends of the right riser 21 and the left riser 22 are integrally connected with a right lower plate 211 and a left lower plate 221, respectively. The right lower plate 211 and the left lower plate 221 are bent towards the inside of the main body 2 in the vertical direction, and the bending angle is not more than 6 degrees, in the embodiment of the utility model, about 5 degrees, so that the left vertical plate 22 and the right vertical plate 21 can be basically abutted against the wall surface, and meanwhile, the damage caused by the deformation of the lower part of the main body 2 due to the fact that the excavator touches the lower part of the device when the excavator is used for grooving can be avoided.

Of course, the connection between the right riser 21 and the left riser 22 includes, but is not limited to, welding, other connection methods such as an integral connection, a snap connection, etc. that can ensure that the right riser 21 and the left riser 22 meet the requirements when in use are also included in the protection scope of the present utility model.

Referring to fig. 1 and 3, a plurality of anchor bolt sleeves 12 are pre-buried and arranged on two side surfaces side by side in a guide wall at the top of a wall body 1, and a plurality of anchor bolt holes 4 are formed in a left riser 22 and a right riser 21 in a penetrating manner side by side. When the device is mounted to the outside of the external corner 13 of the wall 1, the anchor bolt holes 4 are aligned with the anchor bolt sleeves 12, thereby threading the anchor bolts 41 to secure the right riser 21 and the left riser 22 to the wall 1.

Referring to fig. 2 and 3, since the device is required to be hung by a crane for installation, the anchor bolt hole 4 and the anchor bolt sleeve 12 cannot be perfectly centered during operation. Based on this, the present utility model is further configured such that the diameter of the anchor bolt hole 4 is larger than the diameter of the anchor bolt sleeve 12, and in the embodiment of the present utility model, the diameter of the anchor bolt hole 4 is 2cm, and the diameter of the internal threaded hole of the anchor bolt sleeve 12 is 1.6cm, so that the center of the anchor bolt sleeve 12 does not completely overlap with the anchor bolt hole 4 due to an error when the device is installed, and thus the main body 2 cannot be laterally positioned.

Referring to fig. 2 and 3, an anchor bolt 41 is penetrated inside the anchor bolt hole 4. The shank of the anchor bolt 41 is threaded into the anchor bolt housing 12, with the head abutting against the side of the right riser 21 or left riser 22 remote from the wall 1. It should be noted that the head of the anchor bolt 41 must be larger than the anchor bolt hole 4, otherwise the main body 2 cannot be fixed and limited.

Referring to fig. 2 and 3, the anchor bolt 41 is provided to fix the main body 2 of the apparatus to the side wall 1, so that the anchor bolt hole 4 should be formed as far as possible through the main body 2 near the middle. However, since the length of the main body 2 of the device is long, generally at least 3 meters, if the anchor bolt hole 4 is formed in the middle of the main body 2, the anchor bolt cannot be easily attached and detached during the attachment and detachment. Based on this, in the present utility model, several anchor bolt holes 4 are horizontally and side by side penetrating through and are provided on the right riser 21 or the left riser 22, and the distance from the top of the right riser 21 or the left riser 22 is 50-80cm, and in the embodiment of the present utility model, the preferred size is 70cm. The main purpose of this is to allow a constructor to reach on top of the main body 2 and to install or remove the anchor bolts 41 when installing or removing the main body 2.

Referring to fig. 2 and 4, a triangular flat plate 5 is fixedly provided at the top of the main body 2 in a horizontal direction, the triangular flat plate 5 is positioned at a connection position of the right riser 21 and the left riser 22, and both sides of the triangular flat plate 5 are respectively connected with the right riser 21 and the left riser 22. The triangular flat plate 5, the right vertical plate 21 and the left vertical plate 22 jointly protect the external corner 13, collapse and bubbling of the external corner 13 are prevented, and meanwhile, the triangular flat plate 5 can position the main body 2 through the main body 2 structure so that the anchor bolt holes 4 are aligned with the anchor bolt sleeves 12. The triangular flat plate 5 is connected with the right riser 21 and the left riser 22 by welding.

Referring to fig. 2 and 4, further, the bar-shaped flat plate 6 is fixedly connected to the top of the right riser 21 and one end of the top of the left riser 22, which is far from the triangular flat plate 5, in a horizontal direction, so as to strengthen the vertical supporting structure of the main body 2 on the wall 1 and strengthen the structure of the main body 2.

Referring to fig. 2 and 4, a lifting ring 51 for lifting the device by the lifting device is welded on the triangular flat plate 5 and the bar-shaped flat plate 6, and the connecting line of the two lifting rings 51 is perpendicular to the bar-shaped flat plate 6. One in the middle of the strip-shaped plate 6 and the other in the middle of the triangular plate 5, so that when the hoisting device is lifted by the hoisting equipment, the device is kept vertical and not inclined, so that collision between the device and the wall 1 during installation is avoided.

Referring to fig. 2 and 5, further, a plurality of expansion bolt holes 52 are formed in the triangular plate 5 and the bar-shaped plate 6 in a penetrating manner, and the plurality of expansion bolt holes 52 are formed in the middle of the triangular plate 5 and symmetrically formed in the bar-shaped plate 6 for fixing the top of the wall body 1 in the vertical direction to the main body 2. It should be noted that the fact that the expansion bolts 53 are used to fix the triangular flat plate 5 and the bar flat plate 6 is because the bolt sleeve cannot be embedded in the horizontal wall surface of the underground diaphragm wall to fix the main body 2.

The implementation principle of the device for preventing the bulge collapse of the external corner when the underground diaphragm wall is grooved in the embodiment of the utility model is as follows:

the device is mounted outside the external corner 13 of the wall of the underground diaphragm wall by lifting equipment, so that the main body 2 of the device is tightly attached to the wall body 1. The constructor then tightens the anchor bolts 41 on the top to the side of the main body 2, thereby fixing the position of the main body 2. Finally, expansion bolts 53 are driven into the top of the device, so that three sides of the device are fixed with guide walls at the top of the wall body 1, and the external corners 13 are protected from collapsing or bubbling.

When the device is disassembled after the wall 1 is stable in structure, the anchor bolts 41 are firstly disassembled, then the expansion bolts 53 are cut off from the middle part, and the disassembled device can be continuously reused.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (10)

1. The utility model provides a prevent external corner bulge collapse device when diaphragm wall grooving, installs on external corner (13) of diaphragm wall's cell wall, includes main part (2), its characterized in that: the main body (2) comprises a right riser (21) and a left riser (22) which are connected vertically, a plurality of anchor bolt sleeves (12) are pre-buried on a guide wall at the top of the groove wall, a plurality of anchor bolt holes (4) are formed in the right riser (21) and the left riser (22) in a penetrating mode, the anchor bolt holes (4) correspond to the anchor bolt sleeves (12) one by one, and the anchor bolt sleeves are connected through anchor bolts (41).

2. The device for preventing the bulge collapse of the external corner when the underground diaphragm wall is grooved according to claim 1, wherein the device comprises: the anchor bolt holes (4) are arranged on the right vertical plate (21) and the left vertical plate (22) at intervals in the horizontal direction, and the intervals in the horizontal direction of the anchor bolt holes (4) are 50-80cm.

3. The device for preventing the bulge collapse of the external corner when the underground diaphragm wall is grooved according to claim 2, wherein: the size of the anchor bolt sleeve (12) is smaller than the size of the anchor bolt hole (4).

4. The device for preventing the bulge collapse of the external corner when the underground diaphragm wall is grooved according to claim 1, wherein the device comprises: the upper end of the main body (2) is provided with a triangular flat plate (5) along the horizontal direction, and the triangular flat plate (5) is arranged at the connection position of the right vertical plate (21) and the left vertical plate (22).

5. The device for preventing the bulge from collapsing when the underground diaphragm wall is grooved according to claim 4, wherein: the right vertical plate (21) and the left vertical plate (22) are connected with a strip-shaped flat plate (6) at one end far away from the triangular flat plate (5), and the strip-shaped flat plate (6) is arranged at the upper end of the main body (2) along the horizontal direction.

6. The device for preventing the bulge from collapsing when the underground diaphragm wall is grooved according to claim 5, wherein: lifting rings (51) for connecting lifting hooks of the crane are respectively and fixedly arranged on the triangular flat plate (5) and the strip flat plate (6).

7. The device for preventing the bulge from collapsing when the underground diaphragm wall is grooved according to claim 6, wherein: the connecting line of the two hanging rings (51) is perpendicular to the strip-shaped flat plate (6), and one hanging ring (51) is arranged in the middle of the strip-shaped flat plate (6).

8. The device for preventing the bulge from collapsing when the underground diaphragm wall is grooved according to claim 5, wherein: the triangular flat plate (5) and the strip-shaped flat plate (6) are provided with a plurality of expansion bolt holes (52) in a penetrating mode, expansion bolts (53) are arranged in the expansion bolt holes (52) in a penetrating mode, and the other ends of the expansion bolts (53) are fixed on the guide wall.

9. The device for preventing the bulge collapse of the external corner when the underground diaphragm wall is grooved according to claim 1, wherein the device comprises: the lower extreme of right riser (21) is connected with right lower plate (211), the lower extreme of left riser (22) is connected with left lower plate (221), left lower plate (221) with right lower plate (211) are all to the inboard of main part (2) is buckled.

10. The device for preventing the bulge from collapsing when the underground diaphragm wall is grooved according to claim 9, wherein: the bending angle of the left lower plate (221) and the right lower plate (211) is not more than 6 degrees.