Construction device and construction method for tensioning and rectifying rectangular top pipe

Abstract

The application relates to the field of underground pipeline construction, in particular to a construction device and method for tensioning and rectifying a rectangular pipe jacking, which comprises an anchoring piece, a tensioning rope and a tensioning device, the anchoring piece is arranged in a pipe joint, a through hole is arranged on the pipe joint, a tensioning hole is arranged in the soil above the pipe joint, the tensioning hole is communicated with the through hole, the tensioning device is arranged at the top end of the soil above the pipe joint, one end of the tensioning rope is fixedly connected with the tensioning device, the other end of the tensioning rope is fixedly connected with the anchoring piece through the tensioning hole and the through hole, the soil above the pipe joint and on the opposite side needing rectification is provided with a pressure relief hole, and the pressure relief hole is used for reducing the soil pressure borne by the pipe joint during rectification. When the construction device rectifies, the tensioning device is started to drive the pipe joint to lift through the tensioning rope, the pipe joint is rotated to rectify, the soil above the pipe joint does not need to be excavated any more, and the effect of shortening the pipe jacking construction period is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of underground pipeline construction, in particular to a construction device and method for tensioning and rectifying a rectangular jacking pipe. BACKGROUND

[0002] At present, as a non-excavation construction method, the jacking pipe method has played a positive role in the construction of various underground municipal pipelines, pipe corridors and urban underground traffic under complex environments due to its small excavation amount, fast construction speed and small impact on urban traffic. Compared with circular jacking pipes, rectangular jacking pipes have a larger space utilization rate, and thus are widely applied in the fields of power tunnels, municipal pipe corridors and underground passages.

[0003] During jacking construction, uneven settlement and cross-section deflection of pipe sections may occur due to uneven hardness of the stratum, mechanical failure, large measurement error and other factors. The deflected pipe section group may be tens of meters or even hundreds of meters long. When the deflection of a local pipe section is severe, torsion may cause additional stress in the pipe section, and even damage the connection part of the pipe section, seriously affecting the safety and normal use of the rectangular jacking pipe structure.

[0004] The existing remedial measures for the deflection of the rectangular jacking pipe mainly adjust the pipe position after excavation of the pipe section, and correct the pipe position by open excavation. First, foundation pit support is required, and in necessary cases, foundation pit dewatering construction is required, and then the deflected pipe section is rectified.

[0005] The existing technical solutions have the following defects: when the deflected pipe section is excavated, a series of processes such as support, dewatering and backfilling are required, resulting in a long jacking pipe construction period. SUMMARY

[0006] In order to shorten the jacking pipe construction period, the present application provides a construction device and method for tensioning and rectifying a rectangular jacking pipe.

[0007] The above technical purpose of the present application is achieved by the following technical solutions:

[0008] In a first aspect, the present application provides a construction device for tensioning and rectifying a rectangular jacking pipe, comprising an anchoring piece, a tensioning rope and a tensioning device. The anchoring piece is arranged in the pipe section. A through hole is formed in the pipe section. A tensioning hole is formed in the soil above the pipe section. The tensioning hole is in communication with the through hole. The tensioning device is arranged at the top end of the soil above the pipe section. One end of the tensioning rope is fixedly connected to the tensioning device. The other end of the tensioning rope is fixedly connected to the anchoring piece through the tensioning hole and the through hole. The soil above the pipe section and on the opposite side of the pipe section to be rectified are provided with pressure relief holes. The pressure relief holes are used to reduce the soil pressure borne by the pipe section during rectification.

[0009] By adopting the above scheme, when the pipe section is corrected, the tensioning device is first moved to the top end of the soil body, then one end of the tensioning rope is fixedly connected with the anchor after passing through the tensioning hole and the through hole, the other end of the tensioning rope is fixedly connected with the tensioning device, the tensioning device is started to drive the pipe section to lift through the tensioning rope, the pipe section is rotated to correct the deviation, and the pipe section can be smoothly corrected during the rotation for correcting the deviation, because of the setting of the pressure relief hole, the resistance of the surrounding soil body to the rotation of the pipe section is reduced, so that the pipe section can be smoothly corrected, and the soil body above the pipe section no longer needs to be excavated, and the purpose of shortening the pipe jacking construction period is achieved.

[0010] Further, the tensioning device comprises a load distribution beam and a tensioning piece, the load distribution beam is arranged at the top end of the soil body, the length of the load distribution beam is greater than the width of the pipe section, and the tensioning piece is fixed at the top end of the load distribution beam. The tensioning rope is fixedly connected with the tensioning piece by passing through the load distribution beam.

[0011] By adopting the above scheme, when the tensioning device is used, the load distribution beam is first moved to the top end of the soil body, then the tensioning piece is moved to the top end of the load distribution beam, the tensioning piece is fixedly connected with the tensioning rope, and then the tensioning piece is started to exert a pulling force on the tensioning rope. The load generated by the tensioning rope on the tensioning piece is transmitted to the load distribution beam, and the load distribution beam uniformly distributes the load on the soil body. The load distribution beam increases the stress area at the top end of the soil body.

[0012] Further, a steel plate is arranged between the soil body and the load distribution beam, and the steel plate is fixedly connected with the load distribution beam.

[0013] By adopting the above scheme, the steel plate is arranged between the load distribution beam and the soil body, and the steel plate is used to increase the stress area between the load distribution beam and the soil body, thereby increasing the bearing capacity of the top end of the soil body.

[0014] Further, the load distribution beam comprises a first beam, a second beam and a bearing plate, the first beam and the second beam are arranged in parallel, the first beam and the second beam are both fixedly connected with the steel plate, the tensioning rope passes through the gap between the first beam and the second beam, the bearing plate is arranged on the side of the first beam and the second beam away from the steel plate, the first beam and the second beam are both fixedly connected with the bearing plate, the bearing plate is provided with a connecting hole, the tensioning piece is fixed at the top end of the bearing plate, the connecting hole, the through hole and the tensioning hole are coaxially arranged, and the tensioning rope is fixedly connected with the tensioning piece by passing through the connecting hole.

[0015] By adopting the above scheme, the tensioning rope passes through the connecting hole, then passes through the first beam and the second beam, and then enters the tensioning hole and the through hole. The tensioning piece is arranged at the top end of the first beam and the second beam, the pulling force borne by the tensioning piece is distributed to the first beam and the second beam through the bearing plate, and the first beam and the second beam uniformly distribute the load borne to the top end of the soil body.

[0016] Further, the two sides of the tensioning piece are provided with positioning plates, and each positioning plate is fixedly connected with the bearing plate.

[0017] By adopting the above scheme, the tensioning piece at the top end of the bearing plate is positioned by the positioning plate, so that the tensioning piece does not deviate during tensioning, and the stability of the tensioning piece during work is improved.

[0018] Further, a sleeve is arranged in the tensioning hole, and the sleeve is used for protecting the tensioning hole.

[0019] By adopting the above scheme, the sleeve is used for supporting and protecting the hole forming of the tensioning hole, so that the hole collapse of the tensioning hole in the subsequent tensioning process is avoided.

[0020] Further, a connecting pipe is arranged in the sleeve, one end of the connecting pipe passes through the sleeve and the through hole and is located in the pipe joint, and the connecting pipe is fixedly connected with the pipe joint.

[0021] By adopting the above scheme, the connecting pipe passes through the sleeve and the through hole, and the connecting pipe is fixedly connected with the pipe joint, so that the tensioning rope slides in the connecting pipe, and the pipe joint is directly communicated with the top end of the soil body by the connecting pipe. Since the connecting pipe is fixedly connected with the pipe joint, the underground water in the soil body is prevented from entering the pipe joint through the through hole.

[0022] Further, a steel sheet pile is arranged in the soil body on the side where the pipe joint needs to be corrected, and the steel sheet pile is used for reducing the lateral resistance when the pipe joint is twisted.

[0023] By adopting the above scheme, the steel sheet pile is arranged to block the lateral resistance applied by the lateral soil of the pipe joint, so that the stress borne by the pipe joint is reduced, and the smoothness of the pipe joint during rotation is improved.

[0024] In a second aspect, the application provides a construction method for tensioning and correcting a rectangular top pipe, which comprises the following steps:

[0025] S1, preliminary preparation: according to the deflection angle of the pipe joint, the correction height is determined, the position of the correction pipe joint to be hoisted is determined, and the specifications and models of the load distribution beam, the tensioning piece, the tensioning rope and the anchoring piece are determined;

[0026] S2, inserting and driving a steel sheet pile: inserting a steel sheet pile in the soil body on the side where the pipe joint needs to be corrected;

[0027] S3, connecting the pipe joint with the top end of the soil body: drilling a hole from the soil body above the pipe joint, drilling a tensioning hole and a through hole, connecting the hanging connection with the top end of the soil body, protecting the hole forming in the tensioning hole by using a sleeve, then installing a connecting pipe to pass through the sleeve and the through hole and enter the pipe joint, and then filling the gap between the pipe joint and the connecting pipe with foaming glue to prevent water leakage;

[0028] S4, installing a tensioning device: first, the soil at the top of the pipe section is leveled, then a steel plate is placed on the top of the soil, the load distribution beam is moved to the top of the steel plate, the connecting hole on the bearing plate is coaxial with the tensioning hole and the through hole, then one end of the tensioning rope is sequentially threaded through the connecting hole, the tensioning hole and the through hole and fixedly connected with the anchor, the tensioning piece is moved to the top of the bearing plate, the tensioning rope is fixedly connected with the tensioning piece, and the lifting of the tensioning device is completed;

[0029] S5, opening a pressure relief hole: directional drilling is performed to take soil above the pipe section and on the side that needs to be corrected, and a plurality of pressure relief holes are opened;

[0030] S6, tensioning and lifting: the PLC system is used to control a plurality of tensioning pieces to gradually pressurize and lift the pipe section, and the tensioning piece drives the pipe section to rotate through the tensioning rope, so that the pipe section is corrected;

[0031] S7, pipe section grouting: after correction, the tensioning device is removed, then double liquid backfill grouting is performed from the pipe section, and the through hole on the pipe section is plugged.

[0032] Further, in the step S6, during the pipe section tensioning and correction, the stress condition of the pipe section is judged through the detection system to ensure the safety of the pipe section structure; if the pipe section stress is abnormal, the step S5 of opening a pressure relief hole is re-performed in the corresponding area, and then the tensioning and lifting are continued, and the operation is repeated until the pipe section is twisted to the design allowable range.

[0033] By adopting the above scheme, the pressure relief hole and the steel sheet pile are arranged, so that the tensioning device can drive the pipe section to deflect through the tensioning rope, thereby safely and efficiently correcting the pipe section quickly without deforming the pipe section.

[0034] In summary, the present application has the following technical effects:

[0035] By arranging the tensioning device and the tensioning rope, the tensioning device is moved to the top of the soil, then one end of the tensioning rope is threaded through the tensioning hole and the through hole and fixedly connected with the anchor, the other end of the tensioning rope is fixedly connected with the tensioning device, the tensioning device is started to drive the pipe section to lift through the tensioning rope, the pipe section is rotated to correct the deviation, and the pipe section is rotated to correct the deviation. During the rotation, the pressure relief hole is arranged to reduce the resistance of the surrounding soil to the rotation of the pipe section, so that the pipe section can be successfully corrected without the need to excavate the soil above the pipe section, thereby shortening the pipe jacking construction period;

[0036] By arranging the load distribution beam and the steel plate, the load generated by the tensioning piece is transmitted to the load distribution beam, the load distribution beam distributes the load to the steel plate, and finally the steel plate distributes the load to the top of the soil. The steel plate increases the stress area between the load distribution beam and the soil and enhances the bearing capacity of the top of the soil.

[0037] By setting the sleeve to protect the tension hole, avoid subsequent in the tension process, the soil to bear load, tension hole collapse hole. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 is a structural schematic diagram of a construction device for tensioning and rectifying a rectangular top pipe according to the application;

[0039] Figure 2 is a structural schematic diagram of a sleeve and a connecting pipe at a load distribution beam according to the application;

[0040] Figure 3 is a structural schematic diagram of a sleeve and a connecting pipe at a pipe joint according to the application;

[0041] Figure 4 is a structural schematic diagram of a load distribution beam according to the application;

[0042] Figure 5 is a structural schematic diagram of a pipe joint after rectification.

[0043] In the figure, 1, anchor; 2, tensioning rope; 3, tensioning device; 31, load distribution beam; 311, first beam; 312, second beam; 313, bearing plate; 3131, connecting hole; 314, positioning plate; 32, tensioning piece; 4, pipe joint; 41, through hole; 5, soil; 51, tension hole; 52, pressure relief hole; 6, steel plate; 7, sleeve; 8, connecting pipe; 9, steel sheet pile. DETAILED DESCRIPTION

[0044] The application will be further described in detail below with reference to the accompanying drawings.

[0045] Reference Figure 1 and Figure 2 A construction device for tensioning and rectifying a rectangular top pipe according to the application is provided, which comprises an anchor 1, a tensioning rope 2 and a tensioning device 3. The anchor 1 is arranged in a pipe joint 4. The pipe joint 4 is provided with a through hole 41. The soil 5 above the pipe joint 4 is provided with a tension hole 51. The tension hole 51 is in communication with the through hole 41. The tensioning device 3 is arranged at the top end of the soil 5 above the pipe joint 4. One end of the tensioning rope 2 is fixedly connected with the tensioning device 3. The other end of the tensioning rope 2 is fixedly connected with the anchor 1 through the tension hole 51 and the through hole 41. In the embodiment, the tensioning rope 2 is preferably a steel strand. The soil 5 above the pipe joint 4 and on the opposite side of the pipe joint 4 to be rectified is provided with a pressure relief hole 52. The pressure relief hole 52 is used to reduce the pressure of the soil 5 when the pipe joint 4 is rectified. A steel sheet pile 9 is vertically arranged in the soil 5 on the opposite side of the pipe joint 4 to be rectified. In the embodiment, the steel sheet pile 9 is preferably a Larsen steel sheet pile 9. The steel sheet pile 9 is used to reduce the lateral resistance when the pipe joint 4 is twisted.

[0046] The pressure relief hole 52 is arranged in the soil 5 on the opposite side of the pipe joint 4 to be rectified. Figure 1For example, the pipe section 4 in the figure deflects to the right side, so the side that needs to be corrected is the right side, and the opposite side that needs to be corrected is the left side of the pipe section 4, and the relief hole 52 is arranged on the left side of the pipe section 4, and the relief hole 52 is arranged above the pipe section 4, in order to further reduce the resistance generated by the soil 5 when the pipe section 4 is corrected and rotated, and therefore the relief hole 52 is arranged below the opposite side of the pipe section 4 that needs to be corrected, that is, below the left side of the pipe section 4.

[0047] With reference to Figure 1 and Figure 2 , the tensioning device 3 comprises a load distribution beam 31 and a tensioning piece 32, the load distribution beam 31 is arranged at the top end of the soil 5, the length of the load distribution beam 31 is greater than the width of the pipe section 4, and the tensioning piece 32 is fixed at the top end of the load distribution beam 31, in the embodiment, the tensioning piece 32 is preferably a through center jack, the tensioning rope 2 is fixedly connected with the tensioning piece 32 through the load distribution beam 31, and the tensioning piece 32 is used to exert an upward tension on the tensioning rope 2, and a steel plate 6 is arranged between the soil 5 and the load distribution beam 31, the steel plate 6 is fixedly connected with the load distribution beam 31, and the steel plate 6 is placed at the top end of the soil 5 and used to increase the area of the bearing pressure at the top end of the soil 5.

[0048] With reference to Figures 2-4 , the load distribution beam 31 comprises a first beam 311, a second beam 312 and a bearing plate 313, the first beam 311 and the second beam 312 are arranged in parallel, the first beam 311 and the second beam 312 are both fixedly connected with the steel plate 6, the tensioning rope 2 passes through the gap between the first beam 311 and the second beam 312, the bearing plate 313 is arranged on the side of the first beam 311 and the second beam 312 away from the steel plate 6, the first beam 311 and the second beam 312 are both fixedly connected with the bearing plate 313, the bearing plate 313 is provided with a connecting hole 3131, the tensioning piece 32 is fixed at the top end of the bearing plate 313, the connecting hole 3131, the through hole 41 and the tensioning hole 51 are coaxially arranged, and the tensioning rope 2 is fixedly connected with the tensioning piece 32 through the connecting hole 3131; the two sides of the tensioning piece 32 are both provided with a positioning plate 314, and each positioning plate 314 is fixedly connected with the bearing plate 313.

[0049] With reference to Figure 3 , a sleeve 7 is arranged in the tensioning hole 51, and the sleeve 7 is used to protect the tensioning hole 51; a connecting pipe 8 is arranged in the sleeve 7, one end of the connecting pipe 8 passes through the sleeve 7 and the through hole 41 and is located in the pipe section 4, and the connecting pipe 8 is fixedly connected with the pipe section 4.

[0050] The implementation principle of the construction device for tensioning and deviation rectification of the rectangular jacking pipe is as follows: when the construction device is used, first, the steel plate 6 is moved to the top end of the soil body 5, and then the load distribution beam 31 is moved to the top end of the steel plate 6, so that the two ends of the load distribution beam 31 are both provided with the steel plate 6, then one end of the tensioning rope 2 is fixedly connected with the anchoring piece 1 after passing through the tensioning hole 51 and the through hole 41, and the other end of the tensioning rope 2 is fixedly connected with the tensioning piece 32 after passing through the connecting hole 3131, the tensioning piece 32 is started to drive the pipe joint 4 to lift through the tensioning rope 2, so that the pipe joint 4 rotates to rectify the deviation, and in the rectification and rotation process of the pipe joint 4, due to the provision of the pressure relief hole 52, the resistance of the surrounding soil body 5 to the rotation of the pipe joint 4 is reduced, so that the deviation rectification of the pipe joint 4 can be smoothly performed, and the soil body 5 above the pipe joint 4 no longer needs to be excavated, so that the purpose of shortening the jacking pipe construction period is achieved.

[0051] A construction method for tensioning and deviation rectification of a rectangular jacking pipe, comprising the following steps:

[0052] S1, preliminary preparation: according to the deflection angle of the pipe joint 4, the rectification height required is determined, the position of the pipe joint 4 required to be hoisted for rectification is determined, and the specifications and models of the load distribution beam 31, the tensioning piece 32, the tensioning rope 2 and the anchoring piece 1 are determined;

[0053] S2, inserting and driving the steel sheet pile (9): inserting the steel sheet pile (9) into the soil body 5 on the side of the pipe joint 4 required to be rectified;

[0054] S3, the pipe joint 4 is in communication with the top end of the soil body 5: drilling a hole downward from the soil body 5 above the pipe joint 4 to drill the tensioning hole 51 and the through hole 41, so that the hanging connection is in communication with the top end of the soil body 5, a sleeve 7 is used to protect the hole in the tensioning hole 51, then a connecting pipe 8 is installed to pass through the sleeve 7 and the through hole 41 to enter the pipe joint 4, and then foaming glue is used to fill the gap between the pipe joint 4 and the connecting pipe 8 to prevent water leakage;

[0055] S4, installing the tensioning device 3: first, the foundation of the soil body 5 at the top end of the pipe joint 4 is leveled, then the steel plate 6 is placed to the top end of the soil body 5, the load distribution beam 31 is moved to the top end of the steel plate 6, so that the connecting hole 3131 on the bearing plate 313 is coaxial with the tensioning hole 51 and the through hole 41, then one end of the tensioning rope 2 is fixedly connected with the anchoring piece 1 after passing through the connecting hole 3131, the tensioning hole 51 and the through hole 41 in sequence, the tensioning piece 32 is moved to the top end of the bearing plate 313, the tensioning rope 2 is fixedly connected with the tensioning piece 32, and the lifting of the tensioning device 3 is completed;

[0056] S5, opening the pressure relief hole 52: directional drilling is performed to take out the soil above the pipe joint 4 and on the side required to be rectified, the drilling and soil taking position is preferably within the range of 20cm-50cm of the pipe joint 4, and a plurality of pressure relief holes 52 are opened;

[0057] S6, tension lifting: using the PLC system to control several tensioning members 32 to gradually pressurize and lift the pipe section 4, the tensioning members 32 drive the pipe section 4 to rotate through the tensioning ropes 2, so as to rectify the pipe section 4;

[0058] S7, pipe section 4 grouting: after rectification (as shown in Figure 5 , the tensioning device 3 is removed, then wall back double liquid grouting is carried out from the pipe section 4, and the through hole 41 on the pipe section 4 is plugged.

[0059] In step S6, the stress condition of the pipe section 4 is judged through the detection system during the pipe section 4 tension rectification process, to ensure the safety of the pipe section 4 structure; if the pipe section 4 stress is abnormal, the step S5 of opening the pressure relief hole 52 is re-operated in the corresponding area, then the tension lifting is continued, and the operation is repeated until the twist is within the design allowable range.

[0060] The specific embodiment is only an explanation of the application, and is not a limitation of the application. Those skilled in the art can make modifications to the embodiment without creative contribution after reading the specification, but as long as the modifications are within the scope of the claims of the application, they are protected by the patent law.

Claims

1. A construction device for tensioning and correcting the deviation of rectangular jacking pipes, characterized in that: The utility model relates to a pipe joint deviation rectification device, including anchor (1), tension rope (2) and tension device (3), anchor (1) sets up in pipe joint (4), pipe joint (4) is provided with through -hole (41), pipe joint (4) top soil (5) is provided with tension hole (51), tension hole (51) with through -hole (41) intercommunication, tension device (3) sets up in the top of soil (5) of pipe joint (4), tension rope (2) one end is fixedly connected with tension device (3), tension rope (2) other end passes through tension hole (51) and through -hole (41) and is fixedly connected with anchor (1), pipe joint (4) top and the soil (5) of needing deviation rectification opposite side are provided with pressure relief hole (52), and pressure relief hole (52) is used for reducing the pressure of soil (5) that pipe joint (4) deviation rectification bears; The tension device (3) includes a load distribution beam (31) and a tensioning member (32), the load distribution beam (31) is arranged at the top of the soil (5), the length of the load distribution beam (31) is greater than the width of the pipe joint (4), the tensioning member (32) is fixed at the top of the load distribution beam (31), the tension rope (2) is fixedly connected with the tensioning member (32) through the load distribution beam (31), and the tensioning member (32) is used for applying an upward tension to the tension rope (2); The steel plate (6) is fixedly connected with the load distribution beam (31) between the soil (5) and the load distribution beam (31); The load distribution beam (31) includes a first beam (311), a second beam (312) and a bearing plate (313), the first beam (311) and the second beam (312) are arranged in parallel, the first beam (311) and the second beam (312) are fixedly connected with the steel plate (6), the tension rope (2) passes through the gap between the first beam (311) and the second beam (312), the bearing plate (313) is arranged on the side, away from the steel plate (6), of the first beam (311) and the second beam (312), the first beam (311) and the second beam (312) are fixedly connected with the bearing plate (313), the bearing plate (313) is provided with a connecting hole (3131), the tensioning member (32) is fixed at the top of the bearing plate (313), the connecting hole (3131), the through -hole (41) and the tension hole (51) are coaxially arranged, and the tension rope (2) is fixedly connected with the tensioning member (32) through the connecting hole (3131).

2. The construction device for tensioning and deviation rectification of a rectangular pipe according to claim 1, characterized in that: The tensioning member (32) is provided with a positioning plate (314) on each side, and each positioning plate (314) is fixedly connected with the bearing plate (313).

3. The construction device for tensioning and deviation rectification of a rectangular pipe according to claim 1, characterized in that: The tension hole (51) is provided with a sleeve (7), and the sleeve (7) is used for protecting the tension hole (51).

4. The construction device for tensioning and deviation rectification of a rectangular pipe according to claim 3, characterized in that: The sleeve (7) is provided with a connecting pipe (8), one end of the connecting pipe (8) passes through the sleeve (7) and the through -hole (41) and is located in the pipe joint (4), and the connecting pipe (8) is fixedly connected with the pipe joint (4).

5. The construction device for tensioning and deviation rectification of a rectangular pipe according to claim 1, characterized in that: The soil (5) on the side, opposite to the pipe joint (4), is provided with a steel sheet pile (9), and the steel sheet pile (9) is used for reducing the lateral resistance when the pipe joint (4) is twisted.

6. A construction method for tensioning and rectifying a rectangular pipe, characterized in that, The utility model relates to a pipe joint deviation rectification device, including the following steps: S1, preparation: according to the deflection angle of the pipe joint (4), the height of the deviation correction is determined, the position of the deviation correction pipe joint (4) is determined, the load distribution beam (31), the tensioning member (32), the tensioning rope (2) and the anchor (1) are determined; S2, insert steel sheet pile (9): insert steel sheet pile (9) in the soil (5) on the side of the pipe joint (4) deviation correction; S3, pipe joint (4) and soil (5) top communication: drill from the soil (5) above the pipe joint (4) down, drill out the tension hole (51) and the through hole (41), make the pipe joint (4) and the soil (5) top communication, use the casing (7) to protect the hole in the tension hole (51), then install the connecting pipe (8) through the casing (7) and the through hole (41) into the pipe joint (4), then use the foaming glue to fill the gap between the pipe joint (4) and the connecting pipe (8), prevent water leakage; S4, install tensioning device (3): first, the foundation of the soil (5) on the top of the pipe joint (4) is leveled, then the steel plate (6) is placed to the top of the soil (5), the load distribution beam (31) is moved to the top of the steel plate (6), so that the connecting hole (3131) on the bearing plate (313) is coaxial with the tension hole (51) and the through hole (41), then one end of the tensioning rope (2) is sequentially passed through the connecting hole (3131), the tension hole (51) and the through hole (41) and fixedly connected with the anchor (1), then the tensioning member (32) is moved to the top of the bearing plate (313), so that the tensioning rope (2) is fixedly connected with the tensioning member (32), and the lifting of the tensioning device (3) is completed; S5, open the pressure relief hole (52): directional drilling is carried out above the pipe joint (4) and on the side of the deviation correction to take out the soil, and a plurality of pressure relief holes (52) are opened; S6, tensioning lifting: use PLC system to control a plurality of tensioning members (32) to gradually pressurize and lift the pipe joint (4), so that the pipe joint (4) is rotated through the tensioning rope (2), thereby correcting the deviation of the pipe joint (4); S7, pipe joint (4) grouting: after correction, remove the tensioning device (3), then carry out wall back double liquid grouting from the pipe joint (4), and then seal the through hole (41) on the pipe joint (4).

7. The construction method for tensioning and deviation rectification of a rectangular pipe according to claim 6, characterized in that: In step S6, during the tensioning and deviation correction of the pipe joint (4), the stress condition of the pipe joint (4) is judged through the detection system to ensure the safety of the structure of the pipe joint (4); if the stress of the pipe joint (4) is abnormal, the operation of step S5 of opening the pressure relief hole (52) is carried out again in the corresponding area, and then the tensioning and lifting are continued, and the operation is repeated until the twist is within the design allowable range.

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