Pipe concrete supporting structure for foundation pit supporting

Abstract

The invention relates to the technical field of foundation pit engineering concrete supporting, in particular to a pipe concrete supporting structure for foundation pit supporting, which comprises a ground wall, a concrete enclosing purlin and a concrete supporting part, and the concrete enclosing purlin and the concrete supporting part are sequentially arranged along the direction perpendicular to the ground wall. The concrete enclosing purlins and the concrete supporting parts are made of concrete in an integrated pouring mode, every two adjacent ground walls are connected through a reinforcing steel plate, a plurality of grooves are formed in the ends, connected with the ground walls, of the concrete enclosing purlins at intervals in the length direction of the concrete enclosing purlins, and the grooves are connected with the ground walls through reinforcing steel plates. A jack is installed in the groove in the direction perpendicular to the ground wall, and the end of the jack abuts against the ground wall. The purpose of the application is to actively provide reliable counter-force control deformation for the foundation pit enclosure wall, so that horizontal deformation generated by creep shrinkage, temperature shrinkage and the like of concrete can be compensated during construction of a foundation pit.

Description

Technical Field

[0001] The present application relates to the technical field of concrete support for foundation pit engineering, and in particular to a pipe concrete support structure for foundation pit support. Background Art

[0002] In deep foundation pit projects on soft soil, traditional concrete supports suffer from insufficient deformation control. Specifically, while traditional concrete supports offer high overall stiffness, high bearing capacity, adaptable planar forms, and flexible layout, they suffer from the following issues: 1) Long construction and removal times, resulting in material waste; 2) Passive force distribution, leading to uncontrollable deformation; and 3) Measured axial forces in concrete supports are far less than the designed bearing capacity. These issues make it difficult to meet the "millimeter-level" micro-deformation control requirements for foundation pit environmental protection in sensitive areas such as rail transit, historic buildings, and major pipelines.

[0003] Among related technologies, the application of active deformation control technology for concrete supports is particularly important when constructing deep foundation pits in densely populated urban areas. In particular, when construction is carried out near subway lines, historical buildings or important pipelines, the requirements for deformation control are more stringent. However, in such a complex environment, the geological conditions around the foundation pit are often uneven, and there may be local weak areas or areas with frequent groundwater activity. This unevenness in geological conditions will cause abnormal deformation of the foundation pit retaining structure in certain local areas, and traditional concrete support servo systems may not be able to identify and respond to these local abnormal deformations in a timely manner. If this local abnormal deformation is not controlled in a timely manner, it may expand rapidly, affecting the stability of the entire foundation pit and even endangering the safety of important surrounding facilities. Summary of the Invention

[0004] The present application provides a tubular concrete support structure for foundation pit support, with the purpose of proposing a concrete support active deformation control technology that can be applied to foundation pits of various sizes and shapes. The concrete support servo system can dynamically regulate the support axial force, so that the concrete support structure is changed from a traditional passive force system to a dynamically adjustable active force system; it is proposed and implemented to actively intervene and adjust the servo system according to the deformation of the foundation pit and the change of the support axial force, dynamically regulate the axial force of the concrete support, and actively provide reliable reaction force to the foundation pit retaining wall to control deformation, so as to achieve compensation for horizontal deformation caused by concrete creep shrinkage, temperature shrinkage, etc. during foundation pit construction.

[0005] This application provides a pipe concrete support structure for foundation pit support, which adopts the following technical solutions:

[0006] A tubular concrete support structure for foundation pit support comprises a ground wall and concrete purlins and concrete support portions sequentially arranged in a direction perpendicular to the ground wall, one end of the concrete purlin being connected to the ground wall, the concrete purlin and the concrete support portion being integrally cast from concrete, a plurality of ground walls being provided, and a joint being established between two adjacent ground walls via a reinforcing steel plate, a plurality of grooves being spaced apart along the length direction of the concrete purlin at one end where the concrete purlin is connected to the ground wall, a jack being installed in the groove in a direction perpendicular to the ground wall, and an end of the jack being pressed tightly against the ground wall.

[0007] By adopting the above technical solution, the concrete purlin, concrete support part and the jacks installed in the corresponding grooves together form a concrete support servo system. The system can be used to actively pressurize and control the deformation of the concrete support structure, so that the concrete support structure is transformed from a traditional passive force-bearing system to a dynamically controllable active force-bearing system. After the construction is completed, the servo system intervenes when it detects that the deformation exceeds the preset threshold by real-time monitoring of the foundation pit deformation and the change of the support axial force. The servo system applies axial pressure to the concrete support according to the preset graded loading principle. The jack dynamically controls the support axial force of the concrete support structure, actively providing a reliable reaction force to the foundation pit retaining wall, thereby achieving the effect of controlling the deformation of the concrete support structure. The concrete support servo system can compensate for the horizontal deformation caused by creep shrinkage or temperature shrinkage of concrete, thereby effectively controlling the displacement of the retaining structure and effectively ensuring the stability of the foundation pit and the safety of the surrounding environment.

[0008] This setup can provide experience for maximizing the development of urban underground space, offer technical support for deep foundation pit construction projects similar to those near subways, and help improve the safety of large and deep foundation pits. Furthermore, real-time foundation pit monitoring and risk warning technology, in line with digital construction requirements, will help advance technological upgrades in traditional industries and provide a strong guarantee for achieving micro-deformation control targets for deep foundation pit projects in sensitive environments.

[0009] Preferably, the reinforcing steel plate has a cross-shaped structure as a whole.

[0010] By adopting the above technical solution, the cross-shaped reinforcing steel plate has a stronger structural stability and is not prone to structural damage during the deformation of the concrete structure, thereby effectively ensuring the stability of the connection between adjacent walls.

[0011] Preferably, there are multiple jacks corresponding to the ground wall, and the multiple jacks are independent of each other and are distributed at intervals on the left and right ends of the ground wall.

[0012] By adopting the above technical solution and using multiple jacks to regulate the deformation of the ground wall, the range of adjustable deformation of the concrete support structure can be increased, so that dynamic regulation can adapt to changes in different construction stages and environmental conditions when dynamically adjusting the support system, thereby improving the flexibility and adaptability of the entire support system.

[0013] Preferably, a plurality of reinforcing support columns are integrally cast between the concrete purlin and the concrete support portion, and the plurality of reinforcing support columns are distributed in a fan shape between the concrete purlin and the concrete support portion.

[0014] By adopting the above technical solution, the reinforced support columns are used to further enhance the stability of the connection between the concrete purlin and the concrete support portion, thereby making the concrete servo system more stable during the dynamic adjustment of the concrete support structure.

[0015] Preferably, a reinforcement strip is cast between two adjacent reinforcement support columns.

[0016] By adopting the above technical solution, the reinforcement plate strip can connect the scattered reinforcement support columns into a whole, thereby enabling these reinforcement support columns to provide a more stable supporting force between the concrete purlin and the concrete support part.

[0017] Preferably, the concrete support portion includes a first support column and a second support column, the first support column and the concrete purlin remain parallel, the second support column is arranged in a direction perpendicular to the first support column, the first support column and the second support column are distributed in a "T"-shaped structure as a whole, and the first support column is connected to the plurality of reinforced support columns by integral cast on one side away from the second support column.

[0018] By adopting the above technical solution, the first support column and the second support column are distributed in different directions respectively, so that the first support column and the second support column can provide support forces in different directions for the entire concrete support structure, further enhancing the stability of the connection between the concrete purlin and the concrete support part, thereby making the concrete servo system more stable during the dynamic adjustment of the concrete support structure.

[0019] At the same time, corners are also provided at the left and right ends of the second support column where it connects to the first support column. These corners further strengthen the contact area between the first and second support columns, effectively improving the stability of the connection between the first and second support columns. The added corners between the first and second support columns and the added corners between the multiple reinforced support columns and the first support column form a quadrilateral structure. These four corners connect the first support column, the second support column, and the multiple reinforced support columns into one, further enhancing the stability of the connection between the concrete purlin, the multiple reinforced support columns, and the concrete support portion. This in turn makes the concrete servo system more stable during dynamic adjustment of the concrete support structure.

[0020] Preferably, the jack is slidably arranged in the corresponding groove.

[0021] By adopting the above technical solution, the jack is set to a sliding installation method, so that when the jack dynamically adjusts the support axial force of the concrete support structure, it can be adjusted according to the specific deformation of the concrete support structure, which is beneficial to improving the adaptability of the concrete servo system to the dynamic adjustment of the axial force of the concrete support structure.

[0022] Preferably, a base is fastened to the end of the jack away from the ground wall, and the base provides stable support for the jack. A first track is installed on the groove wall in the horizontal direction, and the left and right sides of the first track are fastened in the groove. A second track is slidingly arranged on the first track, and the second track is arranged in the vertical direction. The second track is connected to the first track through corresponding sliding seats, and a sliding seat is also installed between the base and the second track.

[0023] By adopting the above technical solution, the sliding seat is used to enable the base to slide along the direction of the second track. In this embodiment, the sliding of the second track along the length direction of the first track and the sliding of the base along the length direction of the second track are both driven by corresponding cylinders.

[0024] Specifically, when the jack needs to be adjusted horizontally, the cylinder drives the second track to slide along the first track. During the sliding process, the second track drives the base and the jack to slide horizontally. When the jack needs to be adjusted vertically, the cylinder drives the base to slide along the second track, thereby achieving vertical sliding of the jack.

[0025] Preferably, the interior of the base is filled with a rubber shock-absorbing layer.

[0026] By adopting the above technical solution, the rubber layer is made of a highly elastic and durable synthetic rubber material, which can effectively absorb external impacts while maintaining support stiffness. The support base using this design can improve the base's anti-slip ability by approximately 60% on a simulated soft soil foundation, and can absorb approximately 20% of the impact energy when subjected to a simulated impact, significantly reducing the vibration of the entire support system when subjected to impact. These designs enable the support system to maintain high stiffness and load-bearing capacity while having greater stability and impact resistance, further improving the application of concrete support servo systems in deep foundation pit projects on soft soil foundations.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The concrete purlin, concrete support, and jacks installed in the corresponding grooves together form a concrete support servo system. This system can be used to actively pressurize and control the deformation of the concrete support structure, changing the concrete support structure from a traditional passive force-bearing system to a dynamically controllable active force-bearing system. After the construction is completed, the servo system will monitor the deformation of the foundation pit and the changes in the support axial force in real time. When the deformation exceeds the preset threshold, the servo system will intervene. The servo system applies axial pressure to the concrete support according to the preset graded loading principle. The jacks dynamically control the support axial force of the concrete support structure, actively providing a reliable reaction force to the foundation pit retaining wall, thereby achieving the effect of controlling the deformation of the concrete support structure. The concrete support servo system can compensate for horizontal deformation caused by creep shrinkage or temperature shrinkage of concrete, thereby effectively controlling the displacement of the retaining structure and effectively ensuring the stability of the foundation pit and the safety of the surrounding environment.

[0029] This setup can provide experience for maximizing the development of urban underground space, offer technical support for the construction of deep foundation pits similar to those near subways, and help improve the safety of large and deep foundation pits. Furthermore, real-time foundation pit monitoring and risk warning technology, in line with digital construction requirements, will help advance the technological upgrade of traditional industries and provide a strong guarantee for achieving micro-deformation control targets for deep foundation pits in sensitive environments.

[0030] 2. Using the sliding seat to enable the base to slide along the direction of the second track. In this embodiment, the sliding of the second track along the length direction of the first track and the sliding of the base along the length direction of the second track are both driven by corresponding cylinders.

[0031] Specifically, when the jack needs to be adjusted in the horizontal direction, the cylinder drives the second track to slide along the first track. During the sliding process, the second track drives the base and the jack to slide in the horizontal direction. When the jack needs to be adjusted in the vertical direction, the cylinder drives the base to slide along the second track, thereby achieving the vertical sliding of the jack.

[0032] 3. The interior of the base is filled with a rubber shock-absorbing layer. This layer is made of a highly elastic and durable synthetic rubber material, which can effectively absorb external impacts while maintaining support rigidity. This design of the support base can improve the base's anti-slip ability by approximately 60% on a simulated soft soil foundation. It can also absorb approximately 20% of the impact energy when subjected to a simulated impact, significantly reducing the vibration of the entire support system when subjected to an impact. These designs ensure that the support system has greater stability and impact resistance while maintaining high rigidity and bearing capacity, further improving the application of the concrete support servo system in deep foundation pit projects on soft soil foundations. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present application;

[0034] Figure 2 This is a schematic diagram showing the structure of the reinforced steel plate in an embodiment of the present application;

[0035] Figure 3 yes Figure 2 Enlarged schematic diagram of point A in the middle.

[0036] Figure numerals: 1, ground wall; 2, concrete purlin; 3, concrete support part; 31, first support column; 32, second support column; 4, reinforcing steel plate; 5, groove; 6, jack; 7, reinforcing support column; 8, reinforcing plate belt; 9, base; 10, first rail; 11, second rail. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1 -Attached Figure 3 , further details of this application are given.

[0038] Example:

[0039] The present application discloses a pipe concrete support structure for foundation pit support, referring to Figure 1 and Figure 2The structure comprises a one-meter-thick ground wall 1, along with concrete purlins 2 and concrete supports arranged in sequence perpendicular to the ground wall 1. One end of the concrete purlin 2 is connected to the ground wall 1. The concrete purlin 2 and concrete supports are cast in one piece of concrete, and the concrete purlins 2 and concrete supports are used to stabilize and reinforce the ground wall 1. There are multiple ground walls 1, each five meters long, and adjacent ground walls 1 are connected by reinforcing steel plates 4. At the end where the concrete purlin 2 connects to the ground wall 1, multiple grooves 5 are spaced along the length of the concrete purlin 2. Jacks 6 are installed in the grooves 5 perpendicular to the ground wall 1, with the ends of the jacks 6 pressed against the ground wall 1.

[0040] Reference Figure 1 and Figure 2 The concrete purlin 2, the concrete support part and the jack 6 installed in the corresponding groove 5 together constitute a concrete support servo system. The system can be used to actively pressurize and control the deformation of the concrete support structure, so that the concrete support structure is changed from a traditional passive force-bearing system to a dynamically controllable active force-bearing system. After the construction is completed, by real-time monitoring of the foundation pit deformation and the support axial force changes, when it is detected that the deformation exceeds the preset threshold, the servo system intervenes; the servo system applies axial pressure to the concrete support according to the preset graded loading principle; the jack 6 dynamically controls the support axial force of the concrete support structure, actively provides a reliable reaction force to the foundation pit retaining wall, and achieves the effect of controlling the deformation of the concrete support structure; the concrete support servo system can compensate for the horizontal deformation caused by creep shrinkage or temperature shrinkage of concrete, and thus can effectively control the displacement of the retaining structure and effectively ensure the stability of the foundation pit and the safety of the surrounding environment.

[0041] This setup can provide experience for maximizing the development of urban underground space, offer technical support for deep foundation pit construction projects similar to those near subways, and help improve the safety of large and deep foundation pits. Furthermore, real-time foundation pit monitoring and risk warning technology, in line with digital construction requirements, will help advance technological upgrades in traditional industries and provide a strong guarantee for achieving micro-deformation control targets for deep foundation pit projects in sensitive environments.

[0042] In this embodiment, there are two jacks 6 corresponding to each spoke ground wall 1. The two jacks 6 are independent of each other and are distributed on the left and right ends of the ground wall 1. Using these two jacks 6 to adjust the deformation of the ground wall 1 can increase the range of adjustment and deformation of the concrete support structure, so that dynamic adjustment can adapt to changes in different construction stages and environmental conditions when dynamically adjusting the support system, thereby improving the flexibility and adaptability of the entire support system.

[0043] Specifically, the reinforcing steel plate 4 is in a cross-shaped structure as a whole. The cross-shaped reinforcing steel plate 4 has a stronger structural stability and is not prone to structural damage during the deformation of the concrete structure, thereby effectively ensuring the stability of the connection between the two adjacent ground walls 1.

[0044] Further, refer to Figure 1 and Figure 2 A plurality of reinforcing support columns 7 are integrally cast between the concrete purlin 2 and the concrete support portion. These reinforcing support columns 7 are distributed in a fan shape between the concrete purlin 2 and the concrete support portion. These reinforcing support columns 7 are used to further enhance the stability of the connection between the concrete purlin 2 and the concrete support portion, thereby making the concrete servo system more stable during the dynamic adjustment of the concrete support structure.

[0045] Both ends of the reinforced support column 7 are cast with corners at the connection points between the concrete purlin 2 and the concrete support part. These corners can effectively increase the connection area between the two ends of the reinforced support column 7 and the concrete purlin 2 and the concrete support part, which is beneficial to further enhance the stability of the connection between the concrete purlin 2 and the concrete support part.

[0046] Reference Figure 1 and Figure 2 A cavity is formed between two adjacent reinforcing support columns 7. Concrete is poured in the cavity to form a reinforcing plate 8 between the two adjacent reinforcing support columns 7. The reinforcing plate 8 can connect the scattered reinforcing support columns 7 into a whole, thereby enabling these reinforcing support columns 7 to provide a more stable supporting force between the concrete purlin 2 and the concrete support part.

[0047] Specifically, refer to Figure 1 and Figure 2 The concrete support portion includes a first support column 31 and a second support column 32. The first support column 31 and the concrete purlin 2 remain parallel, and the second support column 32 is arranged in a direction perpendicular to the first support column 31. The first support column 31 and the second support column 32 are distributed in a "T"-shaped structure as a whole. The side of the first support column 31 away from the second support column 32 is integrally cast and connected with a plurality of reinforcing support columns 7. Distributing the first support column 31 and the second support column 32 in different directions can provide support forces in different directions for the entire concrete support structure through the first support column 31 and the second support column 32, further enhancing the stability of the connection between the concrete purlin 2 and the concrete support portion, thereby making the concrete servo system more stable during the dynamic adjustment of the concrete support structure.

[0048] At the same time, corners are also provided at the left and right ends of the second support column 32 where it connects to the first support column 31. These corners further strengthen the contact area between the first support column 31 and the second support column 32, thereby effectively improving the stability of the connection between the first support column 31 and the second support column 32. The corners added between the first support column 31 and the second support column 32 and the corners added between the multiple reinforcement support columns 7 and the first support column 31 form a quadrilateral structure. These four corners connect the first support column 31, the second support column 32, and the multiple reinforcement support columns 7 into an integrated structure, further enhancing the stability of the connection between the concrete purlin 2, the multiple reinforcement support columns 7, and the concrete support portion, thereby making the concrete servo system more stable during the dynamic adjustment of the concrete support structure.

[0049] Furthermore, the jack 6 is slidably mounted in the corresponding groove 5. The slidable mounting arrangement of the jack 6 allows the jack 6 to adjust the axial force of the concrete support structure dynamically according to the specific deformation of the concrete support structure, thereby improving the adaptability of the concrete servo system to the dynamic adjustment of the axial force of the concrete support structure.

[0050] Specifically, refer to Figure 1 、 Figure 2 as well as Figure 3 The end of the jack 6 away from the ground wall 1 is fastened to the base 9 by corresponding fastening bolts, and the base 9 is used to provide stable support for the jack 6. A first track 10 is installed on the groove wall of the groove 5 in the horizontal direction, and the left and right sides of the first track 10 are fastened in the groove 5 by fastening bolts. A second track 11 is slidingly arranged on the first track 10, and the second track 11 is arranged in the vertical direction. The second track 11 and the first track 10 are connected by corresponding sliding seats, and the sliding seats are used to enable the second track 11 to slide along the length direction of the first track 10. At the same time, a sliding seat is also installed between the base 9 and the second track 11, and the sliding seat is used to enable the base 9 to slide along the direction of the second track 11. In this embodiment, the sliding of the second track 11 along the length direction of the first track 10 and the sliding of the base 9 along the length direction of the second track 11 are both driven by corresponding cylinders.

[0051] Specifically, when the jack 6 needs to be adjusted in the horizontal direction, the cylinder drives the second track 11 to slide along the first track 10. During the sliding process, the second track 11 drives the base 9 and the jack 6 to slide in the horizontal direction. When the jack 6 needs to be adjusted in the vertical direction, the cylinder drives the base 9 to slide along the second track 11, thereby achieving the sliding of the jack 6 in the vertical direction.

[0052] Furthermore, the interior of the base 9 is filled with a rubber shock-absorbing layer with a thickness of 20 mm. The rubber layer is made of a highly elastic and durable synthetic rubber material, which can effectively absorb external shocks while maintaining the support stiffness. The support base 9 with this design can improve the anti-slip ability of the base 9 by about 60% on a simulated soft soil foundation, and can absorb about 20% of the impact energy when subjected to a simulated impact, significantly reducing the vibration of the entire support system when subjected to an impact. These designs enable the support system to have better stability and impact resistance while maintaining high stiffness and bearing capacity, further improving the application effect of the concrete support servo system in deep foundation pit projects on soft soil foundations.

[0053] The implementation principle of the pipe concrete support structure for foundation pit support in the embodiment of the present application is as follows:

[0054] The concrete purlin 2, the concrete support part, and the jack 6 installed in the corresponding groove 5 together constitute a concrete support servo system. The system can be used to actively pressurize and control the deformation of the concrete support structure, so that the concrete support structure is transformed from a traditional passive force-bearing system to a dynamically controllable active force-bearing system. After the construction is completed, the servo system intervenes when it detects that the deformation exceeds the preset threshold by real-time monitoring of the foundation pit deformation and the change of the support axial force. The servo system applies axial pressure to the concrete support according to the preset graded loading principle. The jack 6 dynamically controls the support axial force of the concrete support structure, actively providing a reliable reaction force to the foundation pit retaining wall, thereby achieving the effect of controlling the deformation of the concrete support structure. The concrete support servo system can compensate for the horizontal deformation caused by creep shrinkage or temperature shrinkage of concrete, thereby effectively controlling the displacement of the retaining structure and effectively ensuring the stability of the foundation pit and the safety of the surrounding environment.

[0055] This setup can provide experience for maximizing the development of urban underground space, offer technical support for deep foundation pit construction projects similar to those near subways, and help improve the safety of large and deep foundation pits. Furthermore, real-time foundation pit monitoring and risk warning technology, in line with digital construction requirements, will help advance technological upgrades in traditional industries and provide a strong guarantee for achieving micro-deformation control targets for deep foundation pit projects in sensitive environments.

[0056] The interior of the base 9 is filled with a 20mm thick rubber shock-absorbing layer. The rubber layer is made of a highly elastic and durable synthetic rubber material, which can effectively absorb external shocks while maintaining support stiffness. The support base 9 with this design can improve the anti-slip ability of the base 9 by about 60% on a simulated soft soil foundation, and can absorb about 20% of the impact energy when subjected to a simulated impact, significantly reducing the vibration of the entire support system when subjected to an impact. These designs enable the support system to have better stability and impact resistance while maintaining high stiffness and bearing capacity, further improving the application effect of the concrete support servo system in deep foundation pit projects on soft soil foundations.

[0057] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A pipe concrete support structure for foundation pit support, characterized by: The invention comprises a ground wall (1) and concrete purlins (2) and concrete support parts sequentially arranged in a direction perpendicular to the ground wall (1); one end of the concrete purlin (2) is connected to the ground wall (1); the concrete purlin (2) and the concrete support part are made of concrete cast in one piece; the ground wall (1) is provided in plurality; two adjacent ground walls (1) are connected by a reinforcing steel plate (4); one end of the concrete purlin (2) connected to the ground wall (1) is provided with a plurality of grooves (5) spaced apart along the length direction of the concrete purlin (2); a jack (6) is installed in the groove (5) in a direction perpendicular to the ground wall (1); the end of the jack (6) is tightly pressed against the ground wall (1).

2. The pipe concrete support structure for foundation pit support according to claim 1, characterized in that: The reinforcing steel plate (4) is in a cross-shaped structure as a whole.

3. The pipe concrete support structure for foundation pit support according to claim 2, characterized in that: There are multiple jacks (6) corresponding to the ground wall (1), and the multiple jacks (6) are independent of each other and are distributed at intervals on the left and right ends of the ground wall (1).

4. The pipe concrete support structure for foundation pit support according to claim 3, characterized in that: A plurality of reinforcing support columns (7) are integrally cast between the concrete purlin (2) and the concrete support portion, and the plurality of reinforcing support columns (7) are distributed in a fan-shaped manner between the concrete purlin (2) and the concrete support portion.

5. The pipe concrete support structure for foundation pit support according to claim 4, characterized in that: A reinforcement plate strip (8) is cast between two adjacent reinforcement support columns (7).

6. The pipe concrete support structure for foundation pit support according to claim 5, characterized in that: The concrete support portion comprises a first support column (31) and a second support column (32), wherein the first support column (31) and the concrete purlin (2) remain parallel, and the second support column (32) is arranged in a direction perpendicular to the first support column (31), and the first support column (31) and the second support column (32) are distributed in a "T"-shaped structure as a whole, and the side of the first support column (31) away from the second support column (32) is integrally cast and connected with the plurality of reinforced support columns (7).

7. The pipe concrete support structure for foundation pit support according to claim 6, characterized in that: The jack (6) is slidably arranged in the corresponding groove (5).

8. The pipe concrete support structure for foundation pit support according to claim 7, characterized in that: A base (9) is fastened to one end of the jack (6) away from the ground wall (1), and the base (9) stably supports the jack (6). A first track (10) is installed on the groove wall of the groove (5) in the horizontal direction. The left and right sides of the first track (10) are fastened in the groove (5). A second track (11) is slidingly arranged on the first track (10), and the second track (11) is arranged in the vertical direction. The second track (11) and the first track (10) are connected through corresponding sliding seats. A sliding seat is also installed between the base (9) and the second track (11).

9. The pipe concrete support structure for foundation pit support according to claim 8, characterized in that: The interior of the base (9) is filled with a rubber shock-absorbing layer.

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