Slurry embedded type positioning steel casing

Abstract

The utility model discloses a mud embedded type positioning steel casing which comprises a casing body installed in a preset hole in a penetrating mode, a set part of the casing body is exposed out of the ground, a supporting device is arranged on the outer surface of the casing body in a sleeved mode, the supporting device is arranged on the top end face of the preset hole in a pressing mode, and the distance between the supporting device and the top face of the casing body is set to be a fixed value. And by arranging the supporting device and other structures, the precision of the pile forming depth can be guaranteed, the environment-friendly requirement is met, and the hole forming quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a mud-embedded positioning steel casing. Background Art

[0002] During construction, bored piles are made by forming a pile hole in the foundation soil through mechanical drilling, steel pipe squeezing, or manual excavation. A steel cage is then placed inside the pile hole and concrete is poured in. During construction, casing is usually used as an auxiliary tool to fix the pile position, guide the drilling direction, isolate surface water, stabilize the hole wall, prevent hole collapse, and protect the original ground at the hole mouth. However, due to geological differences or mechanical vibrations, the casing is prone to sinking, making it impossible to guarantee the pile depth, thus affecting the pile quality. Furthermore, mud is prone to overflowing from the top of the hole, resulting in a poor construction environment, a chaotic site, and low safety. Severe sinking of the casing can easily cause it to fall into the borehole, making it difficult to salvage it, affecting the project progress. In addition, due to the muddy area around the hole, foreign objects can easily fall into the hole, affecting the quality of the pile.

[0003] In the prior art, the application number is 2020210243458, and the name is an anti-slip positioning steel casing for mechanical bored piles, which includes a hole guard ring and a casing body connected to each other, the hole guard ring is provided with a plurality of overflow holes, and the lower end of the casing body has a blade foot; an annular flange plate is provided at the connection between the hole guard ring and the casing body, the hole guard ring has a greater thickness than the casing body, the annular flange plate is sleeved on the outer circumference of the casing body, and the casing body , the orifice retaining ring and the annular flange plate are welded to each other in contact with each other, and a stiffening plate is provided between the annular flange plate and the orifice retaining ring and / or the casing body; the casing body is buried at the orifice of the pile hole of the cast-in-place pile and has an inner diameter larger than the pile diameter of the cast-in-place pile; the annular flange plate is in contact with the ground; the patent adopts an annular flange plate to evenly distribute the complex load at the orifice of the cast-in-place pile, effectively protect the ground at the orifice, and reduce or avoid the loss of construction time and economic losses caused by the slipping of the positioning steel casing. However, this patent cannot solve the following problems: the accuracy of the pile depth cannot be guaranteed, resulting in the pile hole quality not meeting the requirements. In addition, during the construction process, the ground around the pile hole is muddy, and the environment is poor after the construction workers step on it, which does not meet the environmental protection requirements. Utility Model Content

[0004] In view of the above shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a mud-buried positioning steel casing, which can ensure the accuracy of the pile depth, meet environmental protection requirements, and improve the quality of pile formation.

[0005] In order to solve the above technical problems, the utility model includes a casing installed in a preset hole. Its structural feature is that the set part of the casing is exposed to the ground, and a supporting device is sleeved on the outer surface of the casing. The supporting device is pressed on the top end face of the preset hole, and the distance between the supporting device and the top surface of the casing is set to a fixed value.

[0006] After adopting the above structure, first, a preset hole of corresponding diameter is dug on the pre-construction foundation according to the required pile depth, and the diameter is determined; then, a lifting machine is used to insert the casing into the preset hole to ensure that the distance between the upper end surface of the casing and the ground meets the set value; at the same time, the supporting device is pressed on the periphery of the preset hole to prevent the casing from sinking or falling, avoid the pile hole from collapsing, ensure the flatness of the construction ground, meet environmental protection requirements, and improve the quality of pile formation.

[0007] Preferably, the support device includes two support cover plates which are sleeved on the outside of the casing and spaced apart along its vertical direction, and support vertical plates are connected to the periphery of the support cover plates; the lower support cover plates are pressed on the ground to prevent the casing from sinking or falling.

[0008] Preferably, a plurality of support radial plates are arranged between the inner surface of the support vertical plate and the protective tube, and the plurality of support radial plates are wrapped around the outer surface of the protective tube and arranged radially; ensuring the stability of the support vertical plate, increasing its strength, and avoiding its tilting, deformation, etc.

[0009] Preferably, an inner support plate is also provided on the outer surface of the casing, and the inner support plate is coaxially arranged with the support vertical plate and is arranged as an annular structure. A plurality of the support radial plates are connected between the inner support plate and the support vertical plate, and the two support cover plates respectively cover the two end surfaces of the annular structure; it can be directly installed in a split manner, or the support device can be installed as a whole, which makes installation convenient, increases the strength of the overall structure, and is convenient for adjusting the distance between it and the top surface of the casing, thereby ensuring the accuracy of the pile depth and improving the quality of pile formation.

[0010] Preferably, the support device is provided with a positioning device that matches the grouting platform, and the positioning device includes a support tube that is sleeved on the outside of the support vertical plate, and a plurality of positioning frames that can be connected to the grouting platform are provided on the tube wall of the support tube, and the plurality of positioning frames are all provided on the circumference of the support tube; the setting of the positioning mechanism positions the casing and further strengthens the casing so that it is connected to the grouting platform, ensuring that the casing remains in a vertical state, ensuring the accuracy of the pile depth, and improving the pile quality.

[0011] Preferably, a plurality of positioning blocks capable of resting against the casing are provided on the wall of the support tube, and the plurality of positioning blocks are arranged on the circumference of the casing, and the end faces of the positioning blocks are set as arc-shaped structures that cooperate with the casing; the casing is further limited to ensure the vertical state of the casing and improve the quality of pile formation.

[0012] The utility model prevents the casing from sinking by providing a support device pressed against the ground, thereby ensuring the accuracy of the pile depth. At the same time, it is convenient for workers to step on it, improving safety, and ensuring that the construction environment meets environmental protection requirements. In addition, since the support device is pressed around the end of the preset hole, it also prevents foreign objects from falling into the pile hole and prevents mud from overflowing from the top of the preset hole, thereby improving the on-site construction environment, meeting environmental protection requirements, and ensuring the progress of the project. By setting the distance between the support device and the top surface of the casing to a fixed value and being able to adjust the position of the support device in advance according to the pile depth, it is suitable for pile holes with different requirements, ensuring the accuracy of the pile depth and ensuring the quality of the pile. By providing a positioning device to match it with the pouring platform, it ensures that the casing always remains in a vertical state, prevents deviation, and ensures the quality of the pile. The utility model can ensure the accuracy of the pile depth, meet environmental protection requirements, and improve the quality of the pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings that constitute part of this application are used to provide a further understanding of this application and make other features, objects and advantages of this application more apparent. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation of this application. In the drawings:

[0014] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0015] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure in another direction;

[0016] Figure 3 This is a schematic diagram of the main structure of the present invention;

[0017] Figure 4 for Figure 3 Schematic diagram of the cross-section of AA;

[0018] Figure 5 A schematic diagram of the structure of the installation between the casing and the pouring platform for positioning the casing during construction;

[0019] Figure 6 This is a schematic structural diagram of the positioning device of the utility model;

[0020] Figure 7 This is a structural diagram of another embodiment of the support device of the present invention;

[0021] Figure 8 This is a schematic diagram of the structure of the utility model with an adjustment device;

[0022] Figure 9 for Figure 8Schematic diagram of the structure of the adjustment device.

[0023] In the figure: 1- casing, 2- supporting device, 201- supporting vertical plate, 202- supporting radial plate, 203- supporting cover plate, 204- inner support plate, 3- positioning device, 301- supporting cylinder, 302- positioning frame, 303- positioning block, 4- pouring platform, 5- adjusting device, 501- guide plate, 502- positioning seat, 503- support block. DETAILED DESCRIPTION

[0024] In order to make the technical personnel in this field better understand the present application scheme, the following Figure 1-9 , a clear and complete description of the technical solutions in the embodiments of the present utility model is given.

[0025] An embodiment is now used to describe the above solution in detail. For the convenience of description, Figure 3 The up and down directions are set to the vertical direction.

[0026] The utility model provides a mud-embedded positioning steel casing, comprising a casing 1 inserted into a preset hole, a set portion of the casing 1 exposed to the ground, and a multi-section cylinder connected to the lower end of the casing 1 to meet the needs of different pile depths. A support device 2 is sleeved on the outer surface of the casing, and the support device 2 is pressed on the top end face of the preset hole, that is, pressed against the ground, bearing force evenly, making the ground flat, and the distance between the support device 2 and the top surface of the casing is set to a, and the spacing a is set to a fixed value, that is, the distance between the top surface of the casing and the ground is set to a fixed value, and the value can be adjusted according to the pile hole specification requirements, for example, setting a to 70mm to ensure that the value of a remains unchanged, so as to facilitate the measurement of the sinking depth and pile depth; the setting of the support device 2, which presses against the ground, prevents the casing from sinking or falling , ensure the accuracy of pile depth, improve the hole quality, and at the same time protect the flatness of the pile hole sealing end to prevent foreign matter from easily falling into the pile hole. If the casing sinks, the casing can be salvaged by pulling the supporting device 2; the supporting device 2 is set as a whole, which can be installed as a whole or in parts. It can be set as solid or hollow, and the structural state can be disc-shaped, square-shaped, rectangular or other structural forms. Preferably, the supporting device 2 adopts a hollow disc-shaped structure, which can meet the strength requirements of use, save costs, and ensure easy lifting. The following is a detailed description of the support device as a disc-shaped structure. The above-mentioned support device 2 includes two support cover plates 203 that are sleeved on the outside of the casing 1 and spaced apart along its vertical direction. The support cover plates 203 are connected to the support vertical plates 201 around the circumference of the support cover plates 203. The support cover plates at the bottom are pressed on the ground to prevent the casing from sinking or falling. The above-mentioned spacing a is set as the distance between the support cover plate 203 located above and the top surface of the casing. This distance is a fixed value. The spacing a is calculated by the technical personnel of the design institute according to the specific pile hole requirements, such as the calculation based on the requirements such as the pile hole pile depth, so as to facilitate the calculation of the sinking depth when the casing 1 sinks during construction, ensure the accuracy of the pile depth, and ensure the quality of the pile. The above-mentioned support vertical plates 201 are set in a cylindrical shape, and a plurality of support plates 203 that are arranged around the circumference of the casing 1 and radially arranged are provided between the inner surface of the support vertical plates 201 and the casing 1. The supporting radial plates 202, that is, multiple supporting radial plates 202 are arranged between the inner surface of the supporting vertical plates and the outside of the casing, so as to strengthen the supporting vertical plates 201, make the casing 1 subjected to equal force around the circle, and evenly support the casing 1, ensure that the casing 1 is stable, make the force uniform, prevent the casing from sinking or falling, and ensure the depth of the pile hole; that is, ensure the stability of the supporting vertical plates 201, increase its strength, avoid its tilting, deformation, etc., prevent the casing from sinking or falling, and ensure the depth of the pile hole; the setting of the supporting device 2, the upper support cover plate 203 is flat, which is convenient for the staff to step on and the safety is improved; in addition, since the supporting device 2 is pressed around the end of the preset hole, the force is uniform, foreign matter is prevented from falling into the pile hole, and mud is prevented from overflowing from the top of the preset hole. The on-site construction environment is good, meets environmental protection requirements, and ensures the progress of the project.Furthermore, the supporting device 2 also includes an inner supporting plate 204 which is sleeved on the outer surface of the casing 1. The inner supporting plate 204 is coaxially arranged with the supporting vertical plate 201 to form an annular structure. A plurality of supporting radial plates 202 are connected between the inner supporting plate 204 and the supporting vertical plate 201 to enhance the strength. The two supporting cover plates 203 are respectively covered on the two end surfaces of the annular structure, so that the entire supporting device 2 is set as a whole, which is convenient for adjusting the distance between it and the top surface of the casing 1, and can also form a supporting platform and prevent mud and other debris from falling into the annular structure; the entire supporting device 2 can be directly installed in a split type, or the supporting device can be installed as a whole, which makes installation convenient and increases the strength of the overall structure. At the same time, it is convenient to adjust the distance between it and the top surface of the casing 1, thereby ensuring the accuracy of the pile depth and improving the pile quality. Among them, a square hole is opened on the casing located below the supporting device, and a lifting hole for lifting the casing 1 is radially penetrated at the end. A sleeve is also set on the outer surface of the end of the casing 1 to strengthen the end of the casing 1. A through-hole corresponding to the lifting hole is opened on the sleeve to facilitate the lifting of the casing and ensure its strength.

[0027] Furthermore, the support device 2 is provided with a positioning device 3 to mate with a pouring platform 4 used in subsequent processes. The column frame of the pouring platform 4 comprises a square frame, the inner frame of which is provided with a limiting mechanism that mates with the positioning device 3. In other words, the positioning device 3 can adopt various structural forms, such as an annular slot provided on the support device 2 or a limiting mechanism provided with a structure that can mate with the subsequent pouring platform. The structural form of the limiting mechanism is now described on the supporting device 2; the positioning device 3 includes a supporting tube 301 sleeved on the outside of the supporting vertical plate 201, and a plurality of positioning frames 302 that can be connected to the pouring platform are provided on the wall of the supporting tube 301. The positioning frame 302 can be set as a plate-shaped structure, an end-opening structure, etc. to ensure that it cooperates with the pouring platform, and a plurality of positioning frames 302 are all provided on the circumference of the supporting tube 301; a plurality of positioning blocks 303 that can be against or close to the casing 1 are provided on the wall of the supporting tube 301, and a plurality of positioning blocks 303 are all provided on the circumference of the casing 1, and the end face of the positioning block 303 is set as an arc structure that cooperates with the casing 1. After determining the position, The positioning block is connected to the casing 1 by spot welding or other methods, further limiting the casing to prevent it from being offset, ensuring the vertical state of the casing, and improving the quality of pile formation. In particular, for ease of installation, a bendable connection structure such as a hinge can be adopted at the connection between the positioning block 303 and the casing 1. Before the support tube 301 is placed on the casing 1, the positioning block 303 is first bent upward to facilitate installation. Preferably, the positioning block 303 is close to the casing 1, that is, there is a gap between the end of the positioning block 303 and the radial outer wall of the casing 1. During installation, the positioning block can be directly placed on the outside of the casing 1 along with the support tube 301. After the position is determined, the positioning block is connected to the casing 1 by spot welding or other methods to keep the casing 1 vertical. The setting of this positioning mechanism not only connects it to the pouring platform to prevent it from sinking, but also positions the casing 1 to keep it vertical, ensuring the accuracy of the pile depth and improving the quality of pile formation.

[0028] Furthermore, in order to adjust the position of the support device according to the requirements of the pile hole, a plurality of mounting portions spaced apart along the length direction of the casing 1 can be provided on the outside of the casing 1, and a corresponding support device 2 can be installed on each mounting portion, and the position of the installed support device can be adjusted according to the pile depth. Furthermore, another structure can also be adopted, that is, the casing 1 is also equipped with a support device 2 that can move along its vertical direction through an adjustment device. The adjustment device is pre-adjustable, and the position of the support device 2 is adjusted before it is fixed to the casing 1, and welding or other fastening methods can be used; the adjustment device 5 includes at least two guide plates 501 provided on the outer surface of the casing 1 and extending in the vertical direction of the casing 1. The guide plates have multiple pre-positioning mechanisms for pre-positioning the support device 2 along the length direction, which are used to preliminarily limit the support device 2 and locate its position. The pre-positioning mechanism can be adjusted according to the setting, or it can be set as a stepless adjustment device, which can be parked at any position according to needs. Preferably, each of the guide plates is provided with a plurality of spaced apart limiting holes extending vertically along the casing 1. The limiting holes on each guide plate are correspondingly arranged. The pre-positioning mechanism includes a plurality of positioning seats 502 inserted into the corresponding limiting holes. When in use, the positioning seats can be left in place to prevent soil from entering the hole. Positioning holes are formed on the positioning seats along the radial direction of the casing 1. Support blocks 503 are inserted into the positioning holes. The ends of the positioning holes are also provided with openable and closable covers to prevent soil from entering the positioning holes and affecting the insertion of the support blocks. When adjusting, the support device 2 is sleeved on the casing 1, its position is preset as required, and the support blocks 503 are inserted into the positioning holes of the corresponding positioning seats 502. The support cover 203 at the bottom of the support device 2 is pressed against the support block 503. After the position is adjusted, the support device 2 is connected to the casing 1 to determine the position of the support device 2. The setting of the adjustment device can adjust the position of the installation of the support device 2 according to the pile hole conditions or requirements, and can be applied to pile holes with different requirements.

[0029] During construction, first, a preset hole of corresponding aperture is dug on the pre-construction foundation according to the required pile depth, and the a value is determined; then, a rotary drilling machine is used to place the casing into the preset hole to ensure that the distance between the upper end surface of the casing 1 and the ground meets the set value a; at the same time, the supporting device 2 is pressed on the periphery of the preset hole to protect the pile hole from collapse, prevent the casing from sinking or falling, ensure the flatness of the construction ground, meet environmental protection requirements, and improve the quality of the pile. The utility model prevents the casing from sinking by providing a supporting device 2, facilitates workers to step on it, and improves safety. In addition, since the supporting device 2 is pressed around the end of the preset hole, it also prevents foreign matter from falling into the pile hole and prevents mud from overflowing from the top of the preset hole, so that the on-site construction environment is good, environmental protection requirements are met, and the progress of the project is ensured. By setting the distance between the supporting device 2 and the top surface of the casing 1 to a fixed value, and being able to adjust the position of the supporting device 2 in advance according to the pile hole requirements, so as to adapt to different pile hole requirements, the accuracy of the pile depth is ensured, and the quality of the pile is ensured. In particular, when the casing sinks, the pile depth can be calculated by measuring the sinking depth of the casing to ensure the accuracy of the pile hole depth. By providing a positioning device 3, it is matched with the pouring platform to ensure that the casing 1 always remains in a vertical state, thereby ensuring the quality of the pile hole. By providing an adjusting device 5, it is convenient to adjust the position of the supporting device 2 in the vertical direction, and the distance between the top surface of the casing 1 and the supporting cover plate 203 located on the upper part can be adjusted according to the pile depth, so as to be suitable for pile holes with different requirements and ensure the accuracy of the pile depth. The utility model can ensure the accuracy of pile depth, meet environmental protection requirements, and improve pile quality.

[0030] The above content is merely an example and explanation of the structure of the present utility model. Technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined by the present utility model, they should all fall within the scope of protection of the present utility model.

Claims

1. A slurry embedded positioning steel casing, comprising a casing (1) inserted into a preset hole, characterized in that: A set portion of the casing (1) is exposed to the ground, and a support device (2) is sleeved on the outer surface of the casing (1). The support device (2) is pressed onto the top end surface of the preset hole, and the distance between the support device (2) and the top surface of the casing (1) is set to a fixed value.

2. The slurry embedded positioning steel casing according to claim 1 is characterized in that: The support device (2) comprises two support cover plates (203) sleeved on the outside of the casing (1) and spaced apart along the vertical direction thereof, and support vertical plates (201) are connected to the periphery of the support cover plates (203).

3. The slurry embedded positioning steel casing according to claim 2 is characterized in that: A plurality of supporting radial plates (202) are provided between the inner surface of the supporting vertical plate (201) and the casing (1), and the plurality of supporting radial plates (202) are wound around the outer surface of the casing (1) and are radially arranged.

4. The mud-buried positioning steel casing according to claim 3 is characterized in that: An inner support plate (204) is also sleeved on the outer surface of the casing (1), and the inner support plate (204) and the support vertical plate (201) are coaxially arranged and arranged as an annular structure. A plurality of support radial plates (202) are connected between the inner support plate (204) and the support vertical plate (201), and two support cover plates (203) respectively cover the two end surfaces of the annular structure.

5. The slurry embedded positioning steel casing according to claim 2, characterized in that: The support device (2) is further provided with a positioning device (3), the positioning device (3) comprising a support tube (301) sleeved on the outside of the support vertical plate (201), a plurality of positioning frames (302) capable of being connected to the pouring platform being provided on the tube wall of the support tube (301), and the plurality of positioning frames (302) are all provided on the circumference of the support tube (301).

6. The slurry embedded positioning steel casing according to claim 5, characterized in that: A plurality of positioning blocks (303) capable of resting against the casing (1) are provided on the wall of the support tube (301), the plurality of positioning blocks being arranged around the casing (1), and the end faces of the positioning blocks being arranged as arc-shaped structures cooperating with the casing (1).

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