CN217998366U - Permanent and temporary combined basement structure - Google Patents

Abstract

The utility model provides a permanent temporary combined basement structure, which sequentially comprises a basement structure, an inner lining wall and an underground continuous wall from inside to outside, wherein the inner lining wall is tightly connected with the underground continuous wall through a connecting structure, and crown beams are arranged at the tops of the inner lining wall and the underground continuous wall; the basement structure comprises a structural column, a bottom plate, a floor slab, a wall body and one or two or more layers of superposed beams, wherein a cast-in-situ bored pile is constructed at the bottom of the basement bottom plate, the structural column comprises lattice columns and reinforced concrete thickening layers arranged outside the lattice columns, the lower end of the structural column is fixed in the cast-in-situ bored pile, the upper part of the structural column sequentially penetrates through the one or two or more layers of superposed beams and is fixedly connected with the superposed beams, and the two ends of the basement bottom plate and each layer of superposed beams are respectively connected with the inner lining wall into a whole. The utility model provides a basement structure wholeness can be good, practices thrift building material, and construction speed is fast, has very strong popularization and application and worth.

Description

Permanent and temporary combined basement structure

Technical Field

The utility model relates to a civil engineering field relates to a face forever and combine basement structure particularly.

Background

In the underground engineering work progress, in order to guarantee the safety and stability of the foundation ditch that the downward excavation of ground formed during underground structure construction, can set up the displacement development that the interior soil body of multichannel interim concrete support stops the hole in the hole, set up the lattice column in concrete support below simultaneously to this vertical bending deformation who reduces the concrete support. And a circle of underground continuous wall with enough strength and other supporting measures are arranged along the edge of the foundation pit, and the normal operation of foundation pit construction is ensured by adopting a supporting mode of combining the inside of the pit and the outside of the pit. After the foundation pit construction is completed, the temporary concrete supports and the lattice columns are dismantled after the supporting task is completed, but the dismantling process not only causes environmental pollution, but also increases construction procedures, wastes building materials and construction funds, and prolongs the construction period.

Disclosure of Invention

In order to solve the extravagant and slow problem of construction of building material among the traditional underground structure engineering, the utility model provides a face to combine basement structure forever, can reduce construction process and building material loss, reduce engineering cost simultaneously, shorten construction period.

In order to reach above-mentioned technical purpose, the utility model provides a face to combine basement structure forever, basement structure includes basement structure, interior headwall and underground continuous wall from inside to outside in proper order, underground continuous wall is hugged closely to through connection structure and underground continuous wall zonulae occludens, be equipped with at interior headwall and continuous wall top with both continuous crown's roof beam as an organic whole, basement structure includes structure post, basement bottom plate, basement floor, wall body and one deck or two-layer or the superimposed beam more than two-layer, has the bored concrete pile in basement bottom plate bottom construction, the structure post includes the lattice column and lays the reinforced concrete thickening layer outside the lattice column, in the lower extreme fixed insertion bored concrete pile of structure post, upper portion passed one deck or two-layer or the superimposed beam more than two-layer in proper order to with superimposed beam fixed connection, basement bottom plate and every both ends of superimposed beam link as an organic wholely with interior headwall respectively.

The utility model discloses better technical scheme: the contact surface of the underground continuous wall and the lining wall is provided with strip-shaped grooves which are sunken inwards at the interval of 500-1000 mm, and the joint surface of the lining wall and the underground continuous wall is subjected to scabbling treatment, wherein the scabbling depth is 20-30 mm.

The utility model discloses better technical scheme: the connecting structure consists of embedded steel bars, a straight thread sleeve, connecting steel bars and a round steel plate, wherein the embedded steel bars are embedded in the underground continuous wall, one end of each embedded steel bar is in a straight anchor or bent anchor form and is welded with an underground continuous wall steel bar cage, and the other end of each embedded steel bar is connected with the straight thread sleeve; the connecting steel bars are arranged in the lining wall, one end of each connecting steel bar is connected with the straight thread sleeve, 2-4 round steel plates are welded at the other end of each connecting steel bar, and the round steel plates are welded and fixed with the lining wall steel bar cage.

The utility model discloses better technical scheme: the lining wall is composed of a plurality of sections of lining walls, adjacent sections of lining walls are connected through anchoring steel bars, the joints of the adjacent sections of lining walls adopt tongue-and-groove joints, water stop steel plates are additionally arranged at the joints, and the backwater side of the lining wall is coated with a neoprene latex cement mortar layer; the size of the water stop steel plate is 300mm multiplied by 3m, and the opening direction of the water stop steel plate faces the upstream face.

The utility model discloses better technical scheme: the superposed beam consists of a concrete supporting layer, stirrups and a concrete post-pouring layer, wherein the section of the concrete supporting layer is rectangular, the upper surface of the concrete supporting layer adopts a natural rough surface with the concave-convex size not smaller than 6mm, one end of each stirrup is arranged in the concrete supporting layer, the other end of each stirrup extends out of the upper surface of the concrete supporting layer, the length of the extending straight line section of each stirrup is not smaller than 10d, and d is the diameter of each stirrup; the thickness of the concrete post-cast layer is not less than 100mm, the strength grade of the concrete is not less than C30, and the extending sections of the stirrups all extend into the concrete post-cast layer.

The utility model discloses better technical scheme: the underground continuous wall is formed by splicing a plurality of underground continuous walls, each section of underground continuous wall comprises an underground continuous wall reinforcement cage, trusses and concrete, the trusses are arranged inside the underground continuous wall reinforcement cage at intervals, the designed strength grade of the concrete is not lower than C30, the anti-permeability grade is more than P6, and the pouring height of the concrete is higher than the designed elevation by more than 300-500 mm; two adjacent underground continuous walls are connected through an H-shaped steel joint and a grout stopping iron sheet, the top elevation of the H-shaped steel joint is 700mm above the top elevation of the underground continuous walls, the bottom elevation of the H-shaped steel joint is the bottom elevation of the underground continuous walls, and the whole material of the H-shaped steel joint is welded at the end parts of reinforcement cages of the underground continuous walls; the thickness of the grout stopping iron sheet is 0.5-1 mm, the grout stopping iron sheet is welded at the joint of the H-shaped steel, and the length of the grout stopping iron sheet from the joint of the H-shaped steel to the back is not less than 1250mm, so that the effect of preventing concrete from flowing around is achieved;

the utility model discloses better technical scheme: a triaxial mixing pile is arranged on the outer side of the underground continuous wall and forms a water stop structure; the reinforced concrete thickening layer is formed by additionally arranging a reinforcement cage outside the lattice column and pouring concrete.

The utility model discloses better technical scheme: the basement floor is formed by casting concrete in situ, the basement floor is formed by combining precast slabs and concrete post-cast layers, the stacking surfaces of the precast slabs are subjected to chiseling treatment, and the chiseling depth is not less than 6mm.

The utility model has the advantages that:

(1) The basement structure of the utility model uses the temporary concrete support as a permanent structural beam to realize the integration of beam support; meanwhile, the prefabricated concrete slab is made into a laminated structure by considering the connection mode with the structural slab, and concrete is poured together with the prefabricated slab at the later stage to form a whole, so that the construction material waste can be reduced, the concrete support dismantling process is reduced, the construction period can be shortened, manpower and material resources are saved, and the prefabricated concrete slab is energy-saving and environment-friendly.

(2) The utility model discloses well basement structure carries out integrated design and construction with interim lattice column and permanent structure post, sets up necessary steel reinforcement cage outside the lattice column, establishes the template, and concreting forms the permanent structure post of basement, can avoid interim lattice column to demolish like this, the construction process that significantly reduces for the construction progress reduces construction cost.

(3) The utility model provides an underground continuous wall back of the body soil face is equipped with inside sunken banding recess, and underground continuous wall and interior welt faying face carry out the chisel hair and handle, and banding recess and interior welt integral pouring strengthen the bonding strength of faying face greatly. And the connecting structure is additionally arranged to be connected with the inner lining wall, so that the underground continuous wall and the inner lining wall form an integral stressed structural member, the connection tightness of the underground continuous wall and the inner lining wall is ensured, and the connecting effect of the underground continuous wall and the inner lining wall is greatly enhanced.

(4) The utility model provides a basement structure adopts multiple waterproofing measure to resist groundwater to the erosion of underground structure, and along with the increase of structural service life, groundwater can permeate the underground structure gradually inside, causes great ground potential safety hazard, the utility model discloses set up twice triaxial stirring stake on the upstream face of underground connecting wall seam crossing, adopt the tongue-and-groove seam to form tortuous waterproof route at adjacent interior bushing seam, and add at the seam crossing and establish the stagnant water steel sheet to be equipped with chloroprene latex cement mortar layer in the interior bushing wall backwater side, play and block the inside effect of outside groundwater infiltration basement, effectively guaranteed basement structure's waterproof ability in the service life.

The utility model provides a face to combine construction structure forever, site operation maneuverability is strong, construction work efficiency is high, the construction process and the building material loss that significantly reduce, the wholeness ability and the construction quality of structure are better simultaneously, and engineering cost is lower, energy-concerving and environment-protective.

Drawings

Fig. 1 is a schematic structural view of a permanent temporary combined basement in the utility model;

FIG. 2 isbase:Sub>A schematic sectional view taken along line A-A in FIG. 1;

FIG. 3 is a schematic view of the connection between the underground diaphragm wall and the interior lining wall;

fig. 4 is a schematic structural view of the composite beam of the present invention;

fig. 5 is a schematic view of the structure of the underground diaphragm wall of the present invention.

In the figure: 1-crown beam, 2-underground continuous wall, 200-concrete, 201-underground continuous wall reinforcement cage, 202-H type steel joint, 203-grout stopping iron sheet, 204-end reinforcement, 205-truss, 3-lining wall, 4-laminated beam, 400-concrete supporting layer, 401-stirrup, 402-concrete post-cast layer, 5-connection structure, 500-embedded reinforcement, 501-straight thread sleeve, 502-connection reinforcement, 503-round steel plate, 6-bored pile, 7-structural column, 700-lattice column, 701-reinforced concrete thickening layer, 8-basement bottom plate, 9-triaxial mixing pile, 10-basement floor, 11-wall, 12-strip-shaped groove, 13-neoprene latex cement mortar layer, 14-anchoring steel plate, and 15-water stopping steel plate.

Detailed Description

The present invention will be further explained with reference to the drawings and examples. Fig. 1 to 5 are drawings of the embodiments, which are drawn in a simplified manner and are only used for the purpose of clearly and concisely illustrating the embodiments of the present invention. The following detailed description of the embodiments of the present invention is presented in the accompanying drawings and is not intended to limit the scope of the invention as claimed. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the embodiment, as shown in fig. 1 to 3, the permanently temporary combined basement structure sequentially comprises a basement structure, a lining wall 3 and an underground continuous wall 2 from inside to outside, wherein the lining wall 3 is tightly attached to the underground continuous wall 2, strip-shaped grooves 12 which are inwards recessed are formed in the contact surface between the underground continuous wall 2 and the lining wall 3 at an interval of 500-1000 mm, the combined surface of the lining wall 3 and the underground continuous wall 2 is subjected to roughening treatment, the roughening depth is 20-30 mm, and the lining wall 3 is partially embedded into the strip-shaped grooves 12 in the pouring process to increase the connection tightness of the lining wall and the underground continuous wall; a plurality of connecting structures 5 are further arranged between the inner lining wall 3 and the underground continuous wall 2, the top parts of the inner lining wall 3 and the underground continuous wall 2 are provided with crown beams 1 which connect the inner lining wall 3 and the underground continuous wall 2 into a whole, each connecting structure 5 consists of an embedded steel bar 500, a straight thread sleeve 501, a connecting steel bar 502 and a round steel plate 503, the embedded steel bar 500 is embedded in the underground continuous wall 2, one end of each embedded steel bar is in a straight anchor or bent anchor form and is welded with an underground continuous wall steel bar cage 201, and the other end of each embedded steel bar is connected with the straight thread sleeve 501; the connecting steel bars 502 are arranged in the lining wall 3, one end of each connecting steel bar is connected with the straight thread sleeve 501, 2-4 round steel plates 503 are welded to the other end of each connecting steel bar, and the round steel plates 503 are welded and fixed with the lining wall steel bar cage. And finally, pouring concrete of the lining wall 3 by the single-side formwork support to form a two-in-one wall structure system. The basement structure comprises a structural column 7, a basement bottom plate 8, a basement floor slab 10, a wall body 11 and one or two or more layers of superposed beams 4, wherein cast-in-place piles 6 are constructed at the bottom of the basement bottom plate 8, the structural column 7 comprises lattice columns 700 and reinforced concrete thickening layers 701 arranged outside the lattice columns 700, the reinforced concrete thickening layers 701 are formed by additionally arranging reinforcement cages outside the lattice columns 700 and pouring concrete, the lower ends of the structural columns 7 are fixed in the cast-in-place piles 6, the upper portions of the structural columns 7 sequentially penetrate through the one or two or more layers of superposed beams 4 and are fixedly connected with the superposed beams 4, and two ends of the basement bottom plate 8 and each superposed beam 4 are respectively connected with the lining wall 3 into a whole.

In the permanently combined basement structure provided in the embodiment, as shown in fig. 1 to 3, the lining wall 3 is composed of multiple sections of lining walls, adjacent sections of the lining walls are connected through anchoring steel bars 14, the joints of the adjacent sections of the lining walls are tongue-and-groove joints, water stop steel plates 15 are additionally arranged at the joints, the back water side of the lining wall 3 is coated with a neoprene latex cement mortar layer 13, the size of each water stop steel plate 15 is 300mm × 3m, and the opening direction of each water stop steel plate faces the upstream face. As shown in fig. 4, the composite beam 4 is composed of a concrete supporting layer 400, stirrups 401 and a concrete post-cast layer 402, wherein the cross section of the concrete supporting layer 400 is rectangular, the upper surface of the concrete supporting layer is a natural rough surface with unevenness not less than 6mm, one end of each stirrup 401 is arranged inside the concrete supporting layer 400, the other end of each stirrup extends out of the upper surface of the concrete supporting layer 400, the length of the extended straight line section of each stirrup is not less than 10d, and d is the diameter of each stirrup; the thickness of the concrete post-pouring layer 402 is not less than 100mm, the strength grade of concrete is not less than C30, and the extending sections of the stirrups all extend into the concrete post-pouring layer 402. The basement floor 8 is formed by casting concrete in situ, the basement floor 10 is formed by combining precast slabs and concrete post-cast layers, the superposed surfaces of the precast slabs are chiseled, and the chiseling depth is not less than 6mm.

In the embodiment of the permanently temporary combined basement structure, as shown in fig. 5, the underground continuous wall 2 is formed by splicing a plurality of underground continuous walls, each section of underground continuous wall comprises an underground continuous wall reinforcement cage 201, trusses 205 and concrete 200, the trusses 205 are arranged inside the underground continuous wall reinforcement cage 201 at intervals, the designed strength grade of the concrete 200 is not lower than C30, the anti-permeability grade is more than P6, and the pouring height is more than 300-500 mm higher than the designed elevation; two adjacent underground continuous walls are connected through an H-shaped steel joint 202 and a grout stopping iron sheet 203, the top elevation of the H-shaped steel joint 202 is 700mm above the top elevation of the underground continuous wall 2, the bottom elevation of the H-shaped steel joint is the bottom elevation of the underground continuous wall 2, and the whole material of the H-shaped steel joint is welded at the end part of the reinforcement cage 201 of the underground continuous wall; the thickness of the grout stopping iron sheet 203 is 0.5-1 mm, the grout stopping iron sheet is welded at the H-shaped steel joint 202, and the length of the grout stopping iron sheet is not less than 1250mm from the H-shaped steel joint 202, so that the effect of preventing the concrete 200 from flowing around is achieved.

The embodiment provides a permanent adjacent combined basement structure, which comprises the following specific construction steps:

the method comprises the following steps: and (5) constructing an underground continuous wall and a triaxial stirring pile. And (3) leveling the field, positioning the construction axis of the underground continuous wall 2, excavating a wall guide groove by using a trenching machine, and pouring the concrete guide wall according to the design requirement. Excavating a first-stage groove section of the underground continuous wall, hoisting and sinking the reinforcement cage 201 of the underground continuous wall, backfilling bagged broken stones on two sides of the H-shaped steel joint 202 to fix the reinforcement cage 201 of the underground continuous wall, pouring concrete 200 and curing and forming. And then, carrying out second-stage groove section construction on the underground continuous wall, and repeating the steps until the construction of the underground continuous wall is finished. And finally, constructing a row of three-axis stirring piles 9 on the soil facing surface of the underground diaphragm wall 2 through a three-axis stirrer, and constructing a plurality of rows of three-axis stirring piles 9 at joints of the underground diaphragm wall for resisting the infiltration of underground water.

Step two: and (5) sinking the lattice column. And excavating a bored concrete pile hole according to a design drawing, hoisting and manually adjusting the angle of the lattice column to place the lattice column in the center of the bored concrete pile hole, pouring concrete into the bored concrete pile hole to form a bored concrete pile 6, and fixing the lower part of the lattice column 700 in the bored concrete pile 6.

Step three: and constructing a crown beam and a negative concrete supporting layer. And excavating a soil body to the elevation of the bottom of the top beam 1, binding the reinforcing steel bars of the top beam 1, erecting a template and pouring concrete. And excavating a soil body bearing a layer, binding reinforcing steel bars bearing a concrete support layer 400, erecting a concrete support layer 400 template, pouring concrete according to a calculation result, reserving stirrups 401 with a certain length, and continuously excavating the foundation pit soil body after the concrete reaches the design strength.

Step four: and constructing a lining wall. Excavating earthwork to a designed elevation of a bottom surface of an underground negative layer, arranging strip-shaped grooves 12 on the underground continuous wall 2 at intervals of 500-1000 mm through a grooving machine, and performing roughening treatment on an interval area without the grooves, wherein the roughening depth is 20-30 mm. Then binding the reinforcing steel bars of the inner lining wall 3, connecting one end of the connecting reinforcing steel bar 502 with the straight thread sleeve 501, welding the other end of the connecting reinforcing steel bar on a reinforcing cage of the inner lining wall through the round steel plate 503, erecting a template of the inner lining wall on one side, and pouring concrete of the inner lining wall. And after the concrete of the inner lining wall reaches the design requirement, continuously excavating the next earthwork to the designed elevation of the bottom surface of the negative second floor of the basement, continuously constructing a support layer of the negative second floor concrete and the inner lining wall 3 of the negative second floor structure of the basement according to the mode of the third step, and repeating the steps until the bottom of the basement bottom plate 8 is sealed.

Step five: and (5) constructing a structural column. Firstly, the lattice column 700 is cleaned and polished by water, and then a necessary reinforcement cage is additionally arranged outside the lattice column 700, wherein the stirrups are in the form of # -shaped hoops or two hoops and are fully welded with the lattice column 700. And then, erecting a structural column template, pouring concrete to obtain a reinforced concrete thickening layer 701, and finally forming the basement structure permanent structural column 7.

Step six: and (5) constructing a basement floor slab. The basement floor slab is formed by overlapping precast slabs and concrete, the precast slabs are manufactured in advance by a factory, and the overlapping surfaces of the precast slabs are chiseled, wherein the chiseling depth is not less than 6mm. And then hoisting the prefabricated slab in place by using a crane, binding the steel bars at the top of the prefabricated slab and the steel bars at the upper part of the superposed beam, pouring concrete and forming a whole, and finally building a wall body 11 behind the basement, thereby finishing the construction of the permanently-bound basement structure.

While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims (8)

1. The utility model provides a face and combine basement structure forever which characterized in that: the permanent adjacent combined basement structure sequentially comprises a basement structure, a lining wall (3) and an underground continuous wall (2) from inside to outside, wherein the lining wall (3) is tightly attached to the underground continuous wall (2) and is tightly connected with the underground continuous wall (2) through a connecting structure (5), and the tops of the lining wall (3) and the underground continuous wall (2) are provided with crown beams (1) which connect the lining wall (3) and the underground continuous wall (2) into a whole; the basement structure comprises a structural column (7), a basement bottom plate (8), a basement floor slab (10), a wall body (11) and one or two or more layers of superposed beams (4), wherein a cast-in-place pile (6) is constructed at the bottom of the basement bottom plate (8), the structural column (7) comprises a lattice column (700) and a reinforced concrete thickening layer (701) arranged outside the lattice column (700), the lower end of the structural column (7) is fixed in the cast-in-place pile (6), the upper part of the structural column penetrates through the one or two or more layers of superposed beams (4) in sequence and is fixedly connected with the superposed beams (4), and the two ends of the basement bottom plate (8) and each superposed beam (4) are respectively connected with the inner lining wall (3) into a whole.

2. The permanent adjacent combined basement structure according to claim 1, wherein: the contact surface of the underground continuous wall (2) and the lining wall (3) is provided with strip-shaped grooves (12) which are sunken inwards at intervals of 500-1000 mm, and the combination surface of the lining wall (3) and the underground continuous wall (2) is subjected to roughening treatment, wherein the roughening depth is 20-30 mm.

3. A permanent temporary combined basement structure according to claim 1 or 2, characterized in that: the connecting structure (5) is composed of embedded steel bars (500), straight thread sleeves (501), connecting steel bars (502) and round steel plates (503), the embedded steel bars (500) are embedded in the underground continuous wall (2), one end of each embedded steel bar is in a straight anchor or bent anchor form and is welded with an underground continuous wall steel bar cage (201), and the other end of each embedded steel bar is connected with the straight thread sleeves (501); the connecting steel bars (502) are arranged in the inner lining wall (3), one end of each connecting steel bar is connected with the straight thread sleeve (501), 2-4 round steel plates (503) are welded to the other end of each connecting steel bar, and the round steel plates (503) are welded and fixed with the steel bar cage of the inner lining wall.

4. A permanent joining basement structure according to claim 1 or 2, characterized in that: the lining wall (3) is composed of a plurality of sections of lining walls, adjacent sections of lining walls are connected through anchoring steel bars (14), the joints of the adjacent sections adopt tongue-and-groove joints, water stop steel plates (15) are additionally arranged at the joints, and the backwater side of the lining wall (3) is coated with a neoprene latex cement mortar layer (13); the size of the water stop steel plate is 300mm multiplied by 3m, and the opening direction of the water stop steel plate faces the upstream face.

5. A permanent temporary combined basement structure according to claim 1 or 2, characterized in that: the laminated beam (4) is composed of a concrete supporting layer (400), stirrups (401) and a concrete post-cast layer (402), the section of the concrete supporting layer (400) is rectangular, the upper surface of the concrete supporting layer adopts a natural rough surface with the concave-convex size not smaller than 6mm, one end of each stirrup (401) is arranged in the concrete supporting layer (400), the other end of each stirrup extends out of the upper surface of the concrete supporting layer (400), the length of the extended straight line section of each stirrup is not smaller than 10d, and d is the diameter of each stirrup; the thickness of the concrete post-cast layer (402) is not less than 100mm, the strength grade of the concrete is not less than C30, and the extending sections of the stirrups all extend into the concrete post-cast layer (402).

6. A permanent joining basement structure according to claim 1 or 2, characterized in that: the underground continuous wall (2) is formed by splicing a plurality of underground continuous walls, each section of underground continuous wall comprises an underground continuous wall reinforcement cage (201), trusses (205) and concrete (200), the trusses (205) are arranged inside the underground continuous wall reinforcement cage (201) at intervals, the designed strength grade of the concrete (200) is not lower than C30, the anti-permeability grade is more than P6, and the pouring height of the concrete is higher than the designed elevation by more than 300-500 mm; two adjacent underground continuous walls are connected through an H-shaped steel joint (202) and a grout stopping iron sheet (203), the top elevation of the H-shaped steel joint (202) is 700mm above the top elevation of the underground continuous wall (2), the bottom elevation of the H-shaped steel joint is the bottom elevation of the underground continuous wall (2), and the whole material of the H-shaped steel joint is welded at the end part of a reinforcement cage (201) of the underground continuous wall; the thickness of the grout stopping iron sheet (203) is 0.5-1 mm, the grout stopping iron sheet is welded at the H-shaped steel joint (202), and the length of the grout stopping iron sheet from the H-shaped steel joint (202) to the rear is not less than 1250mm, so that the effect of preventing the concrete (200) from flowing around is achieved.

7. A permanent temporary combined basement structure according to claim 1 or 2, characterized in that: a triaxial stirring pile (9) is arranged on the outer side of the underground continuous wall (2), and the triaxial stirring pile (9) forms a water stop structure; the reinforced concrete thickening layer (701) is formed by additionally arranging a reinforcement cage outside the lattice column (700) and pouring concrete.

8. A permanent temporary combined basement structure according to claim 1 or 2, characterized in that: the basement floor (8) is formed by casting concrete in situ, the basement floor (10) is formed by combining precast slabs and concrete post-cast layers, the overlapping surfaces of the precast slabs are chiseled, and the chiseled depth is not less than 6mm.

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