Foundation pit supporting structure capable of resisting unbalanced water and soil pressure

Abstract

The utility model provides a foundation pit supporting structure for resisting unbalanced water and soil pressure, which comprises two oppositely arranged enclosure parts, a crown beam and a plurality of enclosing purlins, the crown beam and the enclosing purlins are arranged on the enclosure parts, the crown beam is provided with a plurality of first supporting blocks, the first supporting blocks on the two crown beams are arranged in a one-to-one correspondence manner, and the first supporting blocks on the two crown beams are arranged in a one-to-one correspondence manner. A second supporting block is arranged between every two corresponding first supporting blocks, each first supporting block is provided with a positioning assembly used for connecting the corresponding second supporting block with the crown beam, the surrounding purlins on the two enclosure parts are arranged in a one-to-one correspondence mode, and a supporting assembly used for reinforcing the supporting of the surrounding purlins is arranged between every two corresponding surrounding purlins. The cast-in-place concrete support solves the problem of low construction working efficiency caused by long cast-in-place concrete manufacturing and curing time, has the effects of stability and high efficiency, reduces the time required for casting and curing the cast-in-place concrete support, reduces the construction period and cost, and improves the construction working efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit engineering, in particular to a foundation pit supporting structure for resisting unbalanced water and soil pressure. Background Art

[0002] Foundation pit support refers to the need to reinforce and support the retaining structure of the foundation pit during deep foundation pit excavation to prevent the soil from becoming unstable, collapsing or deforming.

[0003] The supporting structure is mainly subjected to lateral pressure, including water and soil pressure and additional pressure caused by ground load, base pressure of adjacent buildings, construction load of adjacent sites, etc., mainly water pressure and soil pressure. If the unbalanced water and soil pressure during foundation pit excavation is ignored, it will seriously threaten the safety of the foundation pit and even cause the retaining structure to become unstable, which may cause excessive deformation of surrounding structures and affect their use.

[0004] With the limitation of construction land in the city center, the development and construction of underground space has developed rapidly. The surrounding environment, loading, excavation depth, etc. of the foundation pit are different, resulting in great differences in the stress and deformation of the retaining structures around the foundation pit, which can easily cause eccentric pressure on the foundation pit.

[0005] In order to resist the bias pressure caused by unbalanced water and soil pressure, the support form of underground continuous wall or pile row combined with internal support is often used. The internal support structure includes the crown beam and surrounding purlin fixedly connected to the underground continuous wall or pile row, the column fixedly connected to the foundation pit, and the support beam used to strengthen the support and connect the crown beam, surrounding purlin and column. By adopting this internal support method, the retaining structure can be reinforced and supported, reducing the risk of instability of the retaining structure caused by the bias pressure of the foundation pit.

[0006] Support beams are generally divided into steel supports, concrete supports, etc. according to the materials. Among them, rigid supports have the advantage of easy installation and disassembly, but the rigidity of rigid supports is less than that of concrete supports. When the support strength is large, rigid supports are more prone to deformation, while concrete supports have less deformation due to their large rigidity. In the internal support structure, the support beams are divided into multi-layer structures. Among them, the support strength requirements for the top-level support beams, that is, the support beams connected to the crown beams, are relatively high. Therefore, the top-level support beams generally use concrete supports. Concrete support beams are generally cast-in-place, but the casting and curing time of cast-in-place concrete supports is relatively long, which increases the construction period and construction costs and reduces the construction work efficiency, so it needs to be improved. Utility Model Content

[0007] The utility model aims to provide a foundation pit support structure for resisting unbalanced water and soil pressure, in order to solve the problem of low construction efficiency caused by long production and curing time of cast-in-place concrete.

[0008] The utility model provides a replacement using the following technical solution:

[0009] A foundation pit support structure for resisting unbalanced water and soil pressure, comprising two enclosures arranged opposite to each other, a crown beam and a plurality of purlins arranged on the enclosures, the crown beam being provided with a plurality of first support blocks, the first support blocks on the two crown beams being arranged in a one-to-one correspondence, a second support block being arranged between the two corresponding first support blocks, the first support blocks being provided with a positioning assembly for connecting the second support block with the crown beam, the purlins on the two enclosures being arranged in a one-to-one correspondence, a support assembly for reinforcing the self-support being arranged between the two corresponding purlins.

[0010] By adopting the above technical solution, when supporting the enclosure, the crown beam installed on the enclosure is first reinforced and supported. The second support block is placed between the two corresponding positioning components and cooperates with them to connect the second support block with the crown beam, and then concrete is poured at the connection between the positioning component and the second support block and the crown beam. While forming the first support block, the connection between the second support block and the first support block and the crown beam is strengthened to achieve reinforced support for the crown beam.

[0011] After that, the support assembly is installed on the purlin to realize the reinforcement support of the purlin. By reinforcing the crown beam and purlin on the enclosure, the reinforcement support on both sides of the foundation pit eccentricity is realized.

[0012] The utility model manufactures the second support block in advance and then connects the second support block to the crown beam through the first support block, so that only the first support block needs to be cast in situ with concrete, and the second support block can be prefabricated in advance. Therefore, the area requiring on-site concrete pouring is reduced without affecting the support strength, that is, the cast-in-situ concrete support adopted by the internal support mechanism is reduced, the time required for pouring and maintaining the cast-in-situ concrete support is reduced, the construction period and cost are reduced, and the construction work efficiency is improved.

[0013] Optionally, a support seat integrally formed with the crown beam is disposed in the first support block, and one end of the second support block and the positioning assembly are disposed on the support seat.

[0014] By adopting the above technical solution, the support seat and the crown beam are integrally formed to achieve a fixed connection between the first support block and the crown beam. At the same time, when the positioning assembly cooperates with the second support block, the support seat provides support for the positioning assembly and the second support block, which facilitates the installation of the second support block. At the same time, the setting of the support seat makes the pouring of concrete more convenient, which is convenient for the pouring of concrete for the first support block and improves the convenience of the pouring of concrete for the first support block.

[0015] Optionally, the positioning assembly includes a first steel plate and a second steel plate arranged in the first support block, and a connecting plate arranged between the first steel plate and the second steel plate, the first steel plate is provided with a plurality of first connecting holes, the support seat is provided with embedded bolts corresponding to the first connecting holes one by one, the embedded bolts are passed through the corresponding first connecting holes, the second steel plate is provided with a plurality of second connecting holes, the second support block is provided with steel bars corresponding to the second connecting holes one by one, the steel bars are passed through the corresponding second connecting holes, the steel bars pass through both ends of the second support block, the steel bars correspond to the embedded bolts one by one, both ends of the steel bars and the embedded bolts are threadedly connected with fixing nuts, and one end of the steel bar is fixedly connected to the corresponding embedded bolt by a connecting piece.

[0016] By adopting the above technical scheme, when the crown beam is connected to the second support block through the positioning assembly, several embedded bolts in the support seat are inserted into the first connecting holes of the first steel plate, and one ends of several steel bars in the second support block are respectively inserted into the second connecting holes of the corresponding second steel plate, and then the fixing nuts are threadedly connected with the corresponding embedded bolts or steel bars, and the fixing nuts are tightened to fix the embedded bolts and the steel bars, and then one end of the steel bars is fixedly connected to the corresponding embedded bolts through the connecting piece, thereby realizing the connection between the support seat and the second support block, and the support seat and the crown beam are integrally formed, thereby realizing the connection between the crown beam and the second support block, and finally the support seat and the positioning assembly are formed into a whole through concrete pouring, that is, the first support block is formed, thereby realizing the reinforced support for the crown beam.

[0017] The utility model increases the connection strength between the second support block and the crown beam and the first support block through positioning components and on-site concrete pouring, thereby improving the support strength of the support structure.

[0018] At the same time, the second support block is positioned by cooperating with the steel bar and the second connecting hole on the second steel plate to prevent the second support block from shifting when placing or pouring the first support block, thereby reducing the risk of affecting the support strength due to the shift of the second support block and improving the stability of the support structure and the accuracy of the connection.

[0019] Optionally, the connecting member is a straight thread sleeve, one end of the straight thread sleeve is threadedly connected to the corresponding steel bar, and the other end of the straight thread sleeve is threadedly connected to the corresponding embedded bolt.

[0020] By adopting the above technical solution, the straight threaded sleeve is threadedly connected to the steel bar and the embedded bolt, thereby fixing the steel bar and the embedded bolt threadably connected, strengthening the connection strength between the support seat and the second support block, and improving the supporting strength of the support structure.

[0021] Optionally, the positioning assembly further includes a plurality of support plates disposed between the first steel plate and the second steel plate, and the support plates are disposed perpendicularly to the connected plates.

[0022] By adopting the above technical solution, the setting of the support plate strengthens the connection between the first steel plate and the second steel plate, preventing the connection plate from being deformed or damaged due to excessive pressure during the installation process, reducing the risk of reinstallation due to deformation or damage of the connection plate, reducing unnecessary construction time, and improving construction work efficiency.

[0023] Optionally, the enclosure is fixedly connected with a plurality of first steel corbels, and the crown beam and the first support block are both arranged on corresponding first steel corbels.

[0024] By adopting the above technical solution, the crown beam and the first support block are supported by the first steel corbel, which reduces the risk of damage to the crown beam and the first support block due to excessive pressure during installation, prevents the support structure from being affected by the damage, and improves the stability of the support structure during installation.

[0025] Optionally, the support assembly includes a plurality of support brackets respectively fixedly connected to the purlins, a mounting plate plugged into and mated with the corresponding support brackets, and a support rod arranged between two corresponding mounting plates, the support brackets on the two corresponding purlins are arranged in a one-to-one correspondence, and the support rod is arranged on the corresponding support brackets.

[0026] By adopting the above technical solution, the support strength requirements for the purlin are relatively low during the foundation pit support process, so the support rod adopts steel support. When installing the steel support, the installation plate is inserted into the corresponding support bracket, and the prestress is applied by the jack. When the appropriate prestress is reached, the jack is removed to complete the reinforcement support for the purlin. The steel support is easy to install and dismantle, and does not require casting and maintenance. At the same time, the steel support can be used in a turnover manner, saving construction time and construction costs, and improving construction work efficiency.

[0027] At the same time, the steel support can adjust the prestress, that is, it can adjust the axial force to effectively support the enclosure, making the support structure more stable and improving the adaptability and stability of the support structure.

[0028] Optionally, the support assembly also includes a column fixedly connected to the bottom surface of the foundation pit, a support frame is arranged on the circumferential side wall of the column, the support rod is arranged on the support frame, the column is provided with a fixed plate, blocking plates are arranged on both sides of the fixed plate, the second support block is arranged on the fixed plate, a support rib is arranged on the circumferential side wall of the column, and the fixed plate is arranged on the support rib.

[0029] By adopting the above technical solution, when the second support block is installed and used for support, the second support block is placed on the fixed plate to provide support for the second support block, share the pressure borne by the support seat, and prevent the support seat from being damaged due to excessive pressure. At the same time, the stability of the support provided by the second support block is ensured, thereby improving the stability of the support structure.

[0030] At the same time, the installation of the support ribs ensures the stability of the fixed plate and prevents damage due to excessive pressure. The installation of barrier plates on both sides of the fixed plate prevents the second support block from shifting and falling during installation, thereby improving the stability of the support structure.

[0031] When installing support rods and support rods for support, the support rods are placed on the support frame. The columns provide support to the support rods through the support frame, sharing the pressure borne by the support bracket, ensuring the stability of the support bracket and support rods for support, and improving the stability of the support structure.

[0032] Optionally, a plurality of second steel corbels are provided on the enclosure, and the enclosure purlin and the supporting bracket are both provided on corresponding second steel corbels.

[0033] By adopting the above technical solution, the second steel corbel provides support for the purlin and the supporting bracket, reducing the risk of damage to the purlin and the supporting bracket due to excessive pressure, preventing the supporting effect of the supporting structure from being affected by damage to the purlin and the supporting bracket, and improving the stability of the supporting structure.

[0034] In summary, the present invention includes at least one of the following beneficial technical effects:

[0035] It reduces the time required for pouring and maintaining cast-in-place concrete supports, reduces construction period and cost, and improves construction efficiency;

[0036] The connection strength between the second support block and the crown beam and the first support block is increased, and the support strength of the support structure is improved;

[0037] The positioning assembly reduces the risk of the second support block shifting during placement or pouring of concrete, thereby improving the accuracy of the connection;

[0038] The risk of damage to the supporting structure is reduced and the stability of the supporting structure is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a front view schematic diagram of the overall structure of an embodiment of the utility model;

[0040] Figure 2 It is a schematic top view of the overall structure of an embodiment of the utility model;

[0041] Figure 3It is a partial structural schematic diagram of an embodiment of the utility model;

[0042] Figure 4 This is a schematic diagram of the structure of the first support block of an embodiment of the utility model;

[0043] Figure 5 It is a schematic diagram of the structure of the positioning component of an embodiment of the utility model;

[0044] Figure 6 It is a partial structural schematic diagram of the positioning assembly of an embodiment of the utility model;

[0045] Figure 7 It is a partial structural schematic diagram of the support assembly of an embodiment of the utility model;

[0046] Figure 8 It is a schematic diagram of the column structure of an embodiment of the utility model.

[0047] Explanation of the accompanying drawings: 1. enclosure; 2. crown beam; 3. purlin; 4. first support block; 5. second support block; 6. support assembly; 7. fixing nut; 8. straight threaded sleeve; 9. expansion bolt; 11. first steel corbel; 12. second steel corbel; 41. positioning assembly; 42. support seat; 51. steel bar; 61. support bracket; 62. support rod; 63. column; 64. mounting plate; 411. first steel plate; 412. second steel plate; 413. connecting plate; 414. support plate; 421. embedded bolt; 631. support frame; 632. fixing plate; 633. barrier plate; 634. support rib; 4111. first connecting hole; 4121. second connecting hole. Implementation

[0048] The following is combined with Figure 1 -Attached Figure 8 The utility model is described in further detail.

[0049] The utility model embodiment discloses a foundation pit supporting structure for resisting unbalanced water and soil pressure.

[0050] Reference Figure 1 and Figure 2 A foundation pit support structure for resisting unbalanced water and soil pressure includes two enclosures 1 arranged in opposite directions, a crown beam 2 fixedly connected to the enclosures 1, and two purlins 3. The crown beam 2 is arranged at the upper end of the enclosure 1, and the purlins 3 are arranged on the opposite sides of the two enclosures 1. The two enclosures 1 are arranged on the opposite side walls of the foundation pit, respectively, and the enclosures 1 adopt conventional underground continuous walls. The crown beam 2 is fixedly connected with two first support blocks 4. The first support blocks 4 on the two crown beams 2 are arranged in a one-to-one correspondence, and the first support blocks 4 are supported by cast-in-place concrete.

[0051] Reference Figure 1 and Figure 2 The purlins 3 on the two underground continuous walls are arranged in one-to-one correspondence, and a support assembly 6 for reinforcing the support itself is installed between the two corresponding purlins 3.

[0052] Reference Figure 2 and Figure 3 A second support block 5 is fixedly connected between the two corresponding first support blocks 4, and a steel bar 51 penetrating through both ends of the second support block 5 is fixedly connected inside the second support block 5. The second support block 5 is supported by prefabricated reinforced concrete.

[0053] Reference Figure 3 Two first steel brackets 11 and four second steel brackets 12 are fixedly connected to the underground continuous wall by expansion bolts 9. The crown beam 2 and the first support block 4 are both fixedly connected to the corresponding first steel brackets 11.

[0054] Reference Figure 4 A support seat 42 is fixedly connected in the first support block 4, and the support seat 42 is integrally formed with the crown beam 2. A positioning assembly 41 for fixedly connecting the crown beam 2 and the second support block 5 is installed in the first support block 4, and one end of the positioning assembly 41 and the second support block 5 is fixedly connected to the support seat 42.

[0055] Reference Figure 4 and Figure 5 The positioning assembly 41 includes a first steel plate 411 and a second steel plate 412 fixedly connected in the first support block 4, a connecting plate 413 fixedly connected between the first steel plate 411 and the second steel plate 412, and six supporting plates 414. The six supporting plates 414 are arranged in groups of three on both sides of the connecting plate 413 and are arranged perpendicular to the connecting plate 413.

[0056] Reference Figure 5 and Figure 6 The first steel plate 411 is provided with four first connection holes 4111, and the support seat 42 is fixedly connected with embedded bolts 421 corresponding to the first connection holes 4111, and the four embedded bolts 421 are respectively inserted into the corresponding first connection holes 4111. The second steel plate 412 is provided with second connection holes 4121 corresponding to the steel bars 51, and the four steel bars 51 are respectively inserted into the corresponding second connection holes 4121.

[0057] Reference Figure 5 and Figure 6 The steel bars 51 correspond to the embedded bolts 421 one by one, and fixing nuts 7 are threadedly connected on both ends of the steel bars 51 and the embedded bolts 421. One end of the steel bar 51 is fixedly connected to the corresponding embedded bolt 421 through a straight thread sleeve 8, one end of the straight thread sleeve 8 is threadedly connected to the corresponding steel bar 51, and the other end is threadedly connected to the corresponding embedded bolt 421.

[0058] Reference Figure 7 and Figure 8 The support assembly 6 includes two support brackets 61 respectively fixedly connected to the purlin 3, a mounting plate 64 plugged into the corresponding support brackets 61, a support rod 62 fixedly connected between the two corresponding mounting plates 64, and a column 63 fixedly connected to the bottom surface of the foundation pit. The support rod 62 adopts conventional steel support.

[0059] Reference Figure 7 The support brackets 61 on the two corresponding purlins 3 are arranged in a one-to-one correspondence, the steel support is located on the corresponding support bracket 61, and the support bracket 61 and the purlin 3 are fixedly connected to the corresponding second steel corbel 12.

[0060] Reference Figure 8 Two support frames 631 are fixedly connected to the circumferential side walls of the column 63, and the steel support is placed on the corresponding support frames 631. A fixing plate 632 is fixedly connected to one end of the column 63 close to the crown beam 2, and blocking plates 633 are fixedly connected to both sides of the fixing plate 632, and the second support block 5 is placed on the fixing plate 632.

[0061] Reference Figure 8 A support rib 634 is fixedly connected to the circumferential side wall of the column 63 , and the support rib 634 is fixedly connected to the side of the fixing plate 632 away from the blocking plate 633 .

[0062] The implementation principle of the foundation pit support structure for resisting unbalanced water and soil pressure in the embodiment of the utility model is as follows:

[0063] When supporting the foundation pit, the underground continuous wall is reinforced and supported.

[0064] First, the cap beam 2 on the underground continuous wall is reinforced and supported, and the second support block 5 is placed on the fixed plate 632 and the two ends are respectively placed on the corresponding two support seats 42. The second support block 5 is a prefabricated reinforced concrete support.

[0065] Afterwards, the two ends of the second support block 5 are respectively matched with the corresponding positioning components 41 on the support seat 42, that is, the four embedded bolts 421 in the support seat 42 are inserted into the first connecting holes 4111 of the first steel plate 411, and one ends of the four steel bars 51 in the second support block 5 are respectively inserted into the second connecting holes 4121 of the corresponding second steel plate 412, and then the fixing nut 7 is threadedly connected with the corresponding embedded bolt 421 or the steel bar 51, and the fixing nut 7 is tightened to fix the embedded bolt 421 and the steel bar 51, and then one end of the steel bar 51 is fixedly connected with the corresponding embedded bolt 421 through the straight threaded sleeve 8, one end of the straight threaded sleeve 8 is threadedly connected with the corresponding steel bar 51, and the other end is threadedly connected with the corresponding embedded bolt 421, thereby realizing the connection between the support seat 42 and the second support block 5, and the support seat 42 is integrally formed with the crown beam 2, thereby realizing the connection between the crown beam 2 and the second support block 5.

[0066] Finally, by pouring concrete on the support seat 42, the support seat 42 and the positioning assembly 41 are formed into a whole, that is, the first support block 4 is formed, and the first support block 4, the second support block 5 and the crown beam 2 are fixedly connected, thereby realizing the reinforcement support for the crown beam 2.

[0067] After the crown beam 2 is reinforced, the purlin 3 is reinforced. During the support process, the support strength of the purlin 3 is not high, so the support rod 62 is made of steel. The mounting plates 64 at both ends of the steel support are plugged into the corresponding support bracket 61, and the steel support is placed on the corresponding support frame 631 and both ends are placed on the corresponding support bracket 61. The steel support is tightly connected to the support bracket 61 through a jack and has a suitable prestress. After that, the jack is removed, and the steel support still maintains a suitable prestress to support the purlin 3, thereby reinforcing the purlin 3 through the steel support.

[0068] By reinforcing the crown beam 2 and the purlin 3, the reinforcement support for the enclosure 1 is completed, thereby realizing the reinforcement support for both sides of the foundation pit eccentricity. And through prefabricated reinforced concrete support and steel support, the area requiring cast-in-place concrete support is reduced.

[0069] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A foundation pit support structure for resisting unbalanced water and soil pressure, comprising two enclosures (1) arranged opposite to each other, a crown beam (2) arranged on the enclosures (1) and a plurality of surrounding purlins (3), characterized in that: The crown beam (2) is provided with a plurality of first support blocks (4), the first support blocks (4) on the two crown beams (2) are arranged in a one-to-one correspondence, a second support block (5) is arranged between the two corresponding first support blocks (4), the first support block (4) is provided with a positioning assembly (41) for connecting the second support block (5) with the crown beam (2), the surrounding purlins (3) on the two enclosures (1) are arranged in a one-to-one correspondence, and a support assembly (6) for reinforcing the self-support is arranged between the two corresponding surrounding purlins (3).

2. The foundation pit support structure for resisting unbalanced water and soil pressure according to claim 1 is characterized in that: A support seat (42) formed integrally with the crown beam (2) is arranged in the first support block (4), and one end of the second support block (5) and the positioning assembly (41) are arranged on the support seat (42).

3. The foundation pit support structure for resisting unbalanced water and soil pressure according to claim 2 is characterized in that: The positioning assembly (41) comprises a first steel plate (411) and a second steel plate (412) arranged in the first support block (4), and a connecting plate (413) arranged between the first steel plate (411) and the second steel plate (412), wherein the first steel plate (411) is provided with a plurality of first connecting holes (4111), the support seat (42) is provided with embedded bolts (421) corresponding to the first connecting holes (4111) one by one, the embedded bolts (421) are inserted into the corresponding first connecting holes (4111), and the second steel plate (412) is provided with a plurality of A second connection hole (4121), a steel bar (51) corresponding to the second connection hole (4121) is arranged in the second support block (5), the steel bar (51) is passed through the corresponding second connection hole (4121), the steel bar (51) passes through both ends of the second support block (5), the steel bar (51) corresponds to the embedded bolt (421) in a one-to-one manner, both ends of the steel bar (51) and the embedded bolt (421) are threadedly connected with fixing nuts (7), and one end of the steel bar (51) and the corresponding embedded bolt (421) are fixedly connected via a connecting piece.

4. The foundation pit support structure for resisting unbalanced water and soil pressure according to claim 3 is characterized in that: The connecting piece is a straight thread sleeve (8), one end of which is threadedly connected to the corresponding steel bar (51) and the other end of which is threadedly connected to the corresponding embedded bolt (421).

5. The foundation pit support structure for resisting unbalanced water and soil pressure according to claim 3 is characterized in that: The positioning assembly (41) further comprises a plurality of support plates (414) arranged between the first steel plate (411) and the second steel plate (412), wherein the support plates (414) are arranged perpendicular to the connected plates (413).

6. The foundation pit support structure for resisting unbalanced water and soil pressure according to claim 1 is characterized in that: The enclosure (1) is fixedly connected to a plurality of first steel brackets (11), and the crown beam (2) and the first support block (4) are both arranged on the corresponding first steel brackets (11).

7. The foundation pit support structure for resisting unbalanced water and soil pressure according to claim 1 is characterized in that: The support assembly (6) comprises a plurality of support brackets (61) respectively fixedly connected to the purlins (3), a mounting plate (64) pluggably matched with the corresponding support brackets (61), and a support rod (62) arranged between two corresponding mounting plates (64); the support brackets (61) on the two corresponding purlins (3) are arranged in a one-to-one correspondence, and the support rod (62) is arranged on the corresponding support bracket (61).

8. The foundation pit support structure for resisting unbalanced water and soil pressure according to claim 7 is characterized in that: The support assembly (6) further comprises a column (63) fixedly connected to the bottom surface of the foundation pit, a support frame (631) is arranged on the circumferential side wall of the column (63), the support rod (62) is arranged on the support frame (631), the column (63) is provided with a fixing plate (632), blocking plates (633) are arranged on both sides of the fixing plate (632), the second support block (5) is arranged on the fixing plate (632), a support rib (634) is arranged on the circumferential side wall of the column (63), and the fixing plate (632) is arranged on the support rib (634).

9. The foundation pit support structure for resisting unbalanced water and soil pressure according to claim 7, characterized in that: A plurality of second steel corbels (12) are arranged on the enclosure (1), and the enclosure purlin (3) and the support bracket (61) are both arranged on the corresponding second steel corbels (12).

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