A geometrically interlocked assembled underground continuous wall structure and construction method thereof

Abstract

The present invention is a geometrically interlocked assembled underground continuous wall structure and a construction method thereof. The assembled underground continuous wall structure includes a plurality of single wall segments, a plurality of locking tube assemblies and a plurality of connecting steel cover plates. The plurality of single wall segments are assembled into an integral underground continuous wall through a plurality of locking tube assemblies and a plurality of connecting steel cover plates. The assembled ground-connected wall of the present invention can be designed parametrically and industrialized, and the quality is easy to ensure. The single wall segments can be freely divided according to the transportation and construction machinery of the project site, and the project has a wider applicability; it avoids the shortcomings of the complex construction process and long construction period of the cast-in-place underground continuous wall, can be quickly assembled and formed, has high construction efficiency, and shortens the construction period; the joints of adjacent single wall segments have continuous stiffness, the joints of adjacent wall widths are geometrically interlocked, and the joints and joints of the ground-connected wall assembled by the wall segments can maintain coordinated deformation, have better waterproof and anti-seepage effects, and have good application prospects.

Description

Technical Field

[0001] The invention relates to the technical field of underground continuous walls of foundation pits, and in particular to a geometrically interlocking assembled underground continuous wall structure and a construction method thereof. Background Art

[0002] Underground continuous wall is a kind of support structure widely used in deep and large foundation pit projects. It has large structural rigidity and good integrity, and has high safety during the foundation pit excavation process. Underground continuous wall can be divided into two types according to the construction process: cast-in-place ground-connected wall and prefabricated ground-connected wall. Compared with traditional cast-in-place ground-connected wall, prefabricated ground-connected wall has the characteristics of parametric design, industrialized production, and easy quality assurance. It avoids steel bar binding and concrete pouring during the construction process, can be quickly assembled and formed, and shortens the construction period.

[0003] In order to meet the volume and weight of the ground-anchored wall transportation, the prefabricated ground-anchored wall is usually divided into several wall sections along the length and depth of the ground-anchored wall, and the staggered joints between the wall sections are realized through the joints and joint structures. However, the current prefabricated ground-anchored wall still faces a difficult problem in the treatment of joints and joints. Improper treatment is prone to water seepage at the joints and joints, and the sudden change of bearing capacity and discontinuity of stiffness at the joints cause the service performance of the ground-anchored wall to decrease, which limits the promotion and engineering application scope of prefabricated ground-anchored walls. Summary of the invention

[0004] The present invention aims to solve the deficiencies of the prior art and to provide a geometrically interlocking assembled underground continuous wall structure and a construction method thereof.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A geometrically interlocked assembled underground continuous wall structure comprises a plurality of single wall sections, a plurality of locking tube assemblies and a plurality of connecting steel cover plates. The plurality of single wall sections are assembled into an integral underground continuous wall through the plurality of locking tube assemblies and the plurality of connecting steel cover plates.

[0007] The single wall section includes a wall body, and the left and right ends of the wall body are provided with staggered Z-shaped joints, and the middle positions of the three end faces of the Z-shaped joints are provided with vertically penetrating "Ω"-shaped locking grooves, and the top of the wall body is provided with a tenon groove that is inclined to the left and right, and the two ends of the tenon groove are respectively connected with the inner angle end face of the Z-shaped joint, and a plurality of vertical high-strength screws are provided on the front and rear sides of the top of the wall body, and a tenon head that is inclined to the left and right is provided at the bottom of the wall, and the two ends of the tenon head correspond to the inner angle end face of the Z-shaped joint, and the geometric shape and horizontal position of the tenon head correspond to the tenon groove, and a plurality of bolt holes are provided on the front and rear sides of the bottom of the wall body, and the bolt holes correspond to the positions of the vertical high-strength screws one by one, and the upper and lower sides of the front side of the wall body and the upper and lower sides of the back side are provided with indentation grooves, and the surfaces of the indentation grooves are provided with a plurality of horizontal high-strength screws.

[0008] A bolt tightening hand hole is provided at the lower end of the front side and the lower end of the back side of the wall body corresponding to each bolt hole, and the upper end of the bolt hole is connected with the corresponding bolt tightening hand hole.

[0009] The locking tube assembly includes a common connection locking tube assembly and an inclinometer connection locking tube assembly; the inclinometer connection locking tube assembly is connected between the "Ω"-shaped locking grooves corresponding to the middle connection end faces of the Z-shaped joint of two adjacent single wall sections, and the common connection locking tube assembly is connected between the "Ω"-shaped locking grooves of the other two connection end faces of the Z-shaped joint of two adjacent single wall sections.

[0010] The common connecting lock pipe assembly comprises two steel flower pipes, two first steel plates are welded in parallel between the outer walls of the two steel flower pipes, and a plurality of first grouting holes are evenly distributed on the outer walls of the steel flower pipes.

[0011] The inclinometer-type connecting locking pipe assembly comprises two cut steel flower pipes, an inclinometer inner steel pipe is welded between the cuts of the two cut steel flower pipes, two second steel plates are welded in parallel on both sides of the inclinometer inner steel pipe between the outer walls of the two cut steel flower pipes, and a plurality of second grouting holes are evenly distributed on the outer walls of the cut steel flower pipes.

[0012] The size of the connecting steel cover plate is consistent with the size of the indentation groove. A plurality of connecting holes are opened on the connecting steel cover plate, and the connecting holes are arranged one by one correspondingly to the horizontal high-strength screw rods.

[0013] The diameter of the bolt hole is larger than the diameter of the vertical high-strength screw; the diameter of the steel flower tube and the cut steel flower tube is smaller than the diameter of the "Ω"-shaped locking groove.

[0014] The above-mentioned construction method of a geometrically interlocking assembled underground continuous wall structure comprises the following specific steps:

[0015] S1. When assembling the upper single wall segment, first clean the debris in the top tenon groove of the lower single wall segment, apply adhesive and lay a sealing gasket, and apply adhesive on the bottom tenon of the upper single wall segment;

[0016] S2, align the bolt hole at the bottom of the upper single wall segment with the vertical high-strength screw at the top of the lower single wall segment, insert the vertical high-strength screw into the corresponding bolt hole, tighten the matching nut on the vertical high-strength screw passing through the bolt tightening hand hole of the upper single wall segment, tighten with an electric torque wrench and apply pre-tension to the vertical high-strength screw, and after the pre-tension is applied, use horseshoe grease to seal the bolt tightening hand hole;

[0017] S3. Install the connecting steel cover plate at the joints of the upper and lower single wall sections, pass the horizontal high-strength screw through the connecting hole of the connecting steel cover plate and tighten the matching nut, and tighten it with an electric torque wrench and apply pre-tension to the horizontal high-strength screw;

[0018] S4, vertically assembling the single wall segments in sequence according to step S2 and step S3 and lowering them into the ground-connected wall groove to form the first vertical wall width, the Z-shaped joint of the single wall segment forms the vertical joint of the first vertical wall width, the "Ω"-shaped locking grooves at the vertical joints are aligned and connected, and the ordinary connection locking tube assembly and the inclinometer connection locking tube assembly of the locking tube assembly are inserted into the corresponding "Ω"-shaped locking grooves by using a vibration hammer device or a static pressure device;

[0019] S5. With the assembled first vertical wall width and locking tube assembly as a guide, staggered assembly of the single wall segments is sequentially assembled in the next ground-connected wall groove to form a second vertical wall width, and the common connection locking tube assembly and the inclinometer connection locking tube assembly are inserted into the "Ω"-shaped locking groove of the second vertical wall width; the height of the single wall segments at the bottom and top of the second vertical wall width is 0.5 times or 1.5 times the height of the single wall segments of the first vertical wall width, so as to realize the staggered assembly of the second vertical wall width with the first vertical wall width;

[0020] S6. Along the direction of the ground-connected wall, assemble the remaining vertical wall sections in sequence to form a whole ground-connected wall, and inject anti-seepage grouting material into the steel flower tube and the cut steel flower tube of the locking tube assembly through a grouting pump. Use pressure to make the anti-seepage grouting material fully diffuse through the first grouting hole and the second grouting hole in the ground-connected wall joint gap and harden, so as to achieve waterproof performance at the vertical joints.

[0021] In step S4, an inclinometer is arranged in the inner steel pipe, and the inclinometer comprises an inclinometer tube and an inclinometer. The inclinometer tube is placed in the inner steel pipe and compacted with fine sand or slurry, and the inclinometer is placed in the inclinometer tube. The inclination of the ground-connected wall is observed at any time by the inclinometer device to ensure the accuracy of installation.

[0022] The beneficial effects of the present invention are as follows: the prefabricated ground-connected wall of the present invention can be designed parametrically and industrialized, and the quality is easy to ensure. The single wall sections can be freely divided according to the transportation and construction machinery of the project site, and the project has a wider applicability; it avoids the shortcomings of complex construction process and long construction period of cast-in-place underground continuous wall, can be quickly assembled and formed, has high construction efficiency, and shortens the construction period; the joints of adjacent single wall sections have continuous stiffness, and the joints of adjacent wall sections are geometrically interlocked. The joints and joints of the ground-connected wall assembled by the wall sections can maintain coordinated deformation, have better waterproof and anti-seepage effects, and have good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a single wall segment in one direction of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the single wall segment in another direction of the present invention;

[0025] Figure 3It is a structural schematic diagram of a common connection lock tube assembly in the present invention;

[0026] Figure 4 It is a structural schematic diagram of the inclinometer type connecting lock pipe assembly in the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of connecting steel cover plates in the present invention;

[0028] Figure 6 It is a schematic diagram of assembling adjacent single wall sections of a vertical wall in the present invention;

[0029] Figure 7 It is a schematic diagram of the staggered assembly of adjacent vertical wall panels in the present invention;

[0030] In the figure: 1-single wall section; 2-locking tube assembly; 3-connecting steel cover plate;

[0031] 11-wall; 12-Z-shaped joint; 13-"Ω"-shaped locking groove; 14-mortise groove; 15-vertical high-strength screw; 16-tenon; 17-bolt hole; 18-indentation groove; 19-horizontal high-strength screw; 110-bolt tightening hand hole;

[0032] 21-ordinary connection lock tube assembly; 22-inclinometer connection lock tube assembly;

[0033] 211-steel flower pipe; 212-first steel plate; 213-first grouting hole;

[0034] 221-cut steel flower pipe; 222-inclined inner steel pipe; 223-second steel plate; 224-second grouting hole;

[0035] 31-connection hole;

[0036] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The embodiments are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail by way of example with reference to the accompanying drawings in the following paragraphs. The advantages and features of the present invention will become clearer according to the following description. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0038] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0040] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0041] A geometrically interlocking assembled underground continuous wall structure, such as Figure 1-Figure 7 As shown, it includes a plurality of single wall segments 1, a plurality of locking tube assemblies 2 and a plurality of connecting steel cover plates 3. The plurality of single wall segments 1 are assembled into an integral underground continuous wall through the plurality of locking tube assemblies 2 and the plurality of connecting steel cover plates 3.

[0042] Monomer wall segment 1 Figure 1 , Figure 2 As shown, the wall 11 includes a staggered Z-shaped joint 12 at the left and right ends of the wall 11, and a vertically penetrating "Ω"-shaped locking groove 13 is provided at the middle position of the three end faces of the Z-shaped joint 12. The top of the wall 11 is provided with a tenon groove 14 that is obliquely penetrated in the left and right directions, and the two ends of the tenon groove 14 are respectively connected to the inner corner end face of the Z-shaped joint 12. A plurality of vertical high-strength screws 15 are provided on both the front and rear sides of the top of the wall 11. The bottom of the wall 11 is provided with a tenon 16 that is obliquely arranged in the left and right directions, and the two ends of the tenon 16 are respectively arranged corresponding to the inner corner end face of the Z-shaped joint 12. The geometric shape of the tenon 16 is as follows: The shape and horizontal position correspond to the mortise and tenon 14. A plurality of bolt holes 17 are provided on the front and rear sides of the bottom of the wall 11. The bolt holes 17 correspond to the positions of the vertical high-strength screws 15 one by one. The diameter of the bolt holes 17 is slightly larger than the diameter of the vertical high-strength screws 15. Indentation grooves 18 are provided on the upper and lower sides of the front side and the upper and lower sides of the back side of the wall 11. A plurality of horizontal high-strength screws 19 are provided on the surface of the indentation grooves 18. A bolt tightening hand hole 110 is provided at the lower end of the front side and the lower end of the back side of the wall 11 corresponding to each bolt hole 17, and the upper end of the bolt hole 17 is connected with the corresponding bolt tightening hand hole 110.

[0043] Lock tube assembly 2 Figure 3, Figure 4 As shown, it includes a common connection lock tube assembly 21 and an inclinometer connection lock tube assembly 22; the inclinometer connection lock tube assembly 22 is connected between the "Ω"-shaped lock grooves 13 corresponding to the middle connection end faces of the Z-shaped joint 12 of two adjacent single wall sections 1, and the common connection lock tube assembly 21 is connected between the "Ω"-shaped lock grooves 13 of the other two connection end faces of the Z-shaped joint 12 of two adjacent single wall sections 1.

[0044] The common connecting lock pipe assembly 21 includes two steel flower pipes 211 , two first steel plates 212 are welded in parallel between the outer walls of the two steel flower pipes 211 , and a plurality of first grouting holes 213 are evenly distributed on the outer walls of the steel flower pipes 211 .

[0045] The inclinometer type connecting locking pipe assembly 22 includes two cut steel flower pipes 221, an inclinometer inner steel pipe 222 is welded between the cuts of the two cut steel flower pipes 221, two second steel plates 223 are welded in parallel on both sides of the inclinometer inner steel pipe 222 between the outer walls of the two cut steel flower pipes 221, and a plurality of second grouting holes 224 are evenly distributed on the outer walls of the cut steel flower pipes 221.

[0046] The diameters of the steel flower tube 211 and the cut steel flower tube 221 are slightly smaller than the size of the “Ω”-shaped locking groove 13 .

[0047] Connect the steel cover 3 as Figure 5 As shown, the size is consistent with the size of the indentation groove 18, and a plurality of connecting holes 31 are opened on the connecting steel cover plate 3, and the connecting holes 31 are arranged one by one with the horizontal high-strength screw rods 19.

[0048] When constructing the ground-connected wall, at the grooved position of the ground-connected wall, the assembled ground-connected wall sheet, the inserted locking tube assembly 2, and the guide frame are used to provide a guiding function, and the single wall segments 1 are assembled from bottom to top in sequence, and are hoisted into the ground-connected wall groove section by section to form a ground-connected wall vertically; the locking tube assembly 2 is inserted into the "Ω"-shaped locking groove 13 of the vertical wall sheet, and the next ground-connected wall is assembled in sequence, and the adjacent wall sheets are assembled by staggered seams to finally form a whole ground-connected wall. The specific steps are as follows:

[0049] S1. When assembling the upper single wall segment 1, first clean the debris in the top tenon groove 14 of the lower single wall segment 1, apply adhesive and lay a sealing gasket, and apply adhesive on the bottom tenon 16 of the upper single wall segment 1;

[0050] S2, align the bolt hole 17 at the bottom of the upper single wall segment 1 with the vertical high-strength screw 15 at the top of the lower single wall segment 1, insert the vertical high-strength screw 15 into the corresponding bolt hole 17, tighten the matching nut on the vertical high-strength screw 15 passing through the bolt tightening hand hole 110 of the upper single wall segment 1, tighten it with an electric torque wrench and apply pre-tension to the vertical high-strength screw 15, and after the pre-tension is applied, use horseshoe grease to seal the bolt tightening hand hole 110;

[0051] Applying pre-tension to the vertical high-strength screw 15 can make the sealing gasket fully contact with the upper monomer wall segment 1 and the lower monomer wall segment 1, and can make the entire cross-section of the concrete at the horizontal joint of the upper monomer wall segment 1 and the lower monomer wall segment 1 be compressed, thereby improving the waterproof performance of the horizontal joint;

[0052] The tight fit between the tenons 16 and the tenons 14 of the adjacent single wall sections 1 improves the shear resistance of the horizontal joints;

[0053] S3, install the connecting steel cover plate 3 at the joint of the upper single wall section 1 and the lower single wall section 1, make the horizontal high-strength screw 19 pass through the connecting hole 31 of the connecting steel cover plate 3 and tighten the matching nut, and tighten it with an electric torque wrench and apply pre-tension to the horizontal high-strength screw 19;

[0054] Applying pre-tension to the horizontal high-strength screw 19 can make the connecting steel cover plates 3 on both sides of the joints coordinately deform with the upper and lower single wall segments 1, and the connecting steel cover plates 3 and the entire cross section of the joints are compressed, thereby jointly ensuring the bearing capacity and rigidity continuity of the upper and lower single wall segments 1;

[0055] S4, vertically assemble the single wall segment 1 in sequence according to step S2 and step S3 and lower it into the ground-connected wall groove to form the first vertical wall width, such as Figure 6 As shown, the Z-shaped joint 12 of the single wall section 1 forms a vertical joint of the first vertical wall width, and the "Ω"-shaped locking groove 13 at the vertical joint is aligned and connected, and the common connection locking tube assembly 21 and the inclinometer connection locking tube assembly 22 of the locking tube assembly 2 are inserted into the corresponding "Ω"-shaped locking groove 13 by using a vibration hammer device or a static pressure device;

[0056] An inclinometer is arranged inside the inclinometer inner steel pipe 222. The inclinometer includes an inclinometer tube and an inclinometer. The inclinometer tube is placed inside the inclinometer inner steel pipe 222 and compacted with fine sand or slurry. The inclinometer is placed inside the inclinometer tube. The inclinometer is used to observe the inclination of the ground-connected wall at any time to ensure the installation accuracy.

[0057] S5. With the assembled first vertical wall and locking tube assembly 2 as a guide, staggered assembly of the single wall segments 1 is sequentially assembled in the next floor-connected wall groove to form a second vertical wall, and the common connection locking tube assembly 21 and the inclinometric connection locking tube assembly 2 are inserted into the "Ω"-shaped locking groove 13 of the second vertical wall; the height of the single wall segments 1 at the bottom and top of the second vertical wall is 0.5 times or 1.5 times the height of the single wall segments 1 of the first vertical wall, so as to realize the staggered assembly of the second vertical wall and the first vertical wall. Figure 7 As shown;

[0058] S6. Along the direction of the ground-connected wall, assemble the remaining vertical wall sections in sequence to form a whole ground-connected wall, and inject anti-seepage grouting material into the steel flower tube 211 and the cut steel flower tube 221 of the locking tube assembly 2 through a grouting pump, and use the pressure to make the anti-seepage grouting material fully diffuse through the first grouting hole 213 and the second grouting hole 224 in the ground-connected wall joint gap and harden, so as to achieve waterproof performance at the vertical joint;

[0059] After the grouting and hardening, the locking tube assembly 2 and the "Ω"-shaped locking groove 13 of the adjacent wall section engage with and constrain each other, so that the deformation between the adjacent wall sections is coordinated, and the geometric interlocking of the locking tube assembly 2 and the adjacent wall sections is achieved.

[0060] The prefabricated ground-connected wall of the present invention can be designed parametrically and produced industrially, and its quality is easy to ensure. The single wall sections 1 can be freely divided according to the transportation and construction machinery of the project site, and the project has a wider applicability. It avoids the shortcomings of complex construction process and long construction period of cast-in-place underground continuous walls, can be quickly assembled and formed, has high construction efficiency, and shortens the construction period. The joints of adjacent single wall sections 1 have continuous stiffness, and the joints of adjacent wall sections are geometrically interlocked. The joints and joints of the ground-connected wall assembled by the wall sections can maintain coordinated deformation, have better waterproof and anti-seepage effects, and have good application prospects.

[0061] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A construction method of a geometrically interlocking assembled underground continuous wall structure, characterized in that: The geometrically interlocked assembled underground continuous wall structure comprises a plurality of single wall segments (1), a plurality of locking tube assemblies (2) and a plurality of connecting steel cover plates (3). The plurality of single wall segments (1) are assembled into an integral underground continuous wall through the plurality of locking tube assemblies (2) and the plurality of connecting steel cover plates (3). The single wall segment (1) comprises a wall body (11). The left and right ends of the wall body (11) are provided with staggered Z-shaped joints (12). The middle positions of the three end faces of the Z-shaped joints (12) are all provided with vertically penetrating "Ω"-shaped locking grooves (13). The top of the wall body (11) is provided with a mortise and tenon groove (14) that penetrates in a left-right oblique direction. The two ends of the mortise and tenon groove (14) are respectively connected to the inner corner end faces of the Z-shaped joints (12). The front and rear ends of the top of the wall body (11) are provided with a plurality of locking grooves (13). A plurality of vertical high-strength screws (15) are provided on each side of the wall (11), a tenon (16) inclined in the left and right directions is provided at the bottom of the wall (11), the two ends of the tenon (16) are respectively arranged corresponding to the inner angle end faces of the Z-shaped joint (12), the geometric shape and horizontal position of the tenon (16) correspond to the tenon groove (14), a plurality of bolt holes (17) are provided on the front and rear sides of the bottom of the wall (11), the bolt holes (17) correspond to the positions of the vertical high-strength screws (15) one by one, the upper and lower sides of the front side and the upper and lower sides of the back side of the wall (11) are provided with indentation grooves (18), the surface of the indentation grooves (18) are provided with a plurality of horizontal high-strength screws (19), and a bolt is provided at the lower end of the front side and the lower end of the back side of the wall (11) corresponding to each bolt hole (17) The hand hole (110) is connected to the upper end of the bolt hole (17) and the corresponding bolt tightening hand hole (110); the locking tube assembly (2) comprises a common connection locking tube assembly (21) and an inclinometer connection locking tube assembly (22); the inclinometer connection locking tube assembly (22) is connected between the "Ω"-shaped locking grooves (13) corresponding to the middle connection end faces of the Z-shaped joints (12) of two adjacent single wall segments (1); the common connection locking tube assembly (21) is connected between the "Ω"-shaped locking grooves (13) of the other two connection end faces of the Z-shaped joints (12) of the two adjacent single wall segments (1); the common connection locking tube assembly (21) comprises two steel flower tubes (211); two first steel flower tubes (211) are parallelly welded between the outer walls of the two steel flower tubes (211); The plate (212) is provided with a plurality of first grouting holes (213) evenly distributed on the outer wall of the steel flower tube (211); the inclinometer-type connecting lock tube assembly (22) comprises two cut steel flower tubes (221); an inclinometer inner steel tube (222) is welded between the cuts of the two cut steel flower tubes (221); two second steel plates (223) are welded in parallel on both sides of the inclinometer inner steel tube (222) between the outer walls of the two cut steel flower tubes (221); and a plurality of second grouting holes (224) are evenly distributed on the outer wall of the cut steel flower tube (221); the size of the connecting steel cover plate (3) is consistent with the size of the indentation groove (18); a plurality of connecting holes (31) are provided on the connecting steel cover plate (3); and the connecting holes (31) are arranged in a one-to-one correspondence with the horizontal high-strength screw rods (19); The specific steps are: S1. When assembling the upper single wall segment (1), first clean the debris in the top tenon groove (14) of the lower single wall segment (1), apply adhesive and lay a sealing gasket, and then apply adhesive on the bottom tenon (16) of the upper single wall segment (1); S2, aligning the bolt hole (17) at the bottom of the upper single wall section (1) with the vertical high-strength screw (15) at the top of the lower single wall section (1), inserting the vertical high-strength screw (15) into the corresponding bolt hole (17), tightening the matching nut on the vertical high-strength screw (15) protruding from the bolt tightening hand hole (110) of the upper single wall section (1), tightening with an electric torque wrench and applying a pre-tension to the vertical high-strength screw (15), and after the pre-tension is applied, closing the bolt tightening hand hole (110) with horseshoe grease; S3, installing the connecting steel cover plate (3) at the joint of the upper single wall section (1) and the lower single wall section (1), allowing the horizontal high-strength screw rod (19) to pass through the connecting hole (31) of the connecting steel cover plate (3) and tighten the matching nut, and tighten it with an electric torque wrench and apply a pre-tension to the horizontal high-strength screw rod (19); S4, according to step S2 and step S3, the single wall segments (1) are vertically assembled in sequence and lowered into the ground-connected wall groove to form a first vertical wall width, the Z-shaped joint (12) of the single wall segment (1) forms a vertical joint of the first vertical wall width, the "Ω"-shaped locking groove (13) at the vertical joint is aligned and connected, and the common connection locking tube assembly (21) and the inclinometer connection locking tube assembly (22) of the locking tube assembly (2) are inserted into the corresponding "Ω"-shaped locking groove (13) by using a vibration hammer device or a static pressure device; S5. With the assembled first vertical wall sheet and locking tube assembly (2) as a guide, the single wall segments (1) are sequentially staggered in the groove of the next floor-connected wall to form a second vertical wall sheet, and the common connecting locking tube assembly (21) and the inclinometer connecting locking tube assembly (2) are inserted into the "Ω"-shaped locking groove (13) of the second vertical wall sheet; the height of the single wall segments (1) at the bottom and top of the second vertical wall sheet is 0.5 times or 1.5 times the height of the single wall segments (1) of the first vertical wall sheet, so that the second vertical wall sheet is staggered with the first vertical wall sheet; S6. Along the direction of the ground-connected wall, the remaining vertical wall panels are assembled in sequence to form a whole ground-connected wall, and an anti-seepage grouting material is injected into the steel flower tube (211) and the cut steel flower tube (221) of the locking tube assembly (2) by means of a grouting pump. The anti-seepage grouting material is fully diffused through the first grouting hole (213) and the second grouting hole (224) in the ground-connected wall joint gap and hardened by using pressure, thereby achieving waterproof performance at the vertical joint.

2. The construction method of a geometrically interlocking assembled underground continuous wall structure according to claim 1, characterized in that: In step S4, an inclinometer is arranged inside the inclinometer inner steel pipe (222), the inclinometer comprising an inclinometer tube and an inclinometer. The inclinometer tube is placed inside the inclinometer inner steel pipe (222) and compacted with fine sand or slurry. The inclinometer is placed inside the inclinometer tube. The inclinometer is used to observe the inclination of the ground connection wall at any time to ensure the installation accuracy.

3. The construction method of a geometrically interlocking assembled underground continuous wall structure according to claim 2, characterized in that: The diameter of the bolt hole (17) is larger than the diameter of the vertical high-strength screw (15); and the diameters of the steel flower tube (211) and the cut steel flower tube (221) are smaller than the diameter of the "Ω"-shaped locking groove (13).

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