CN214005692U - Assembled underground continuous wall capable of being implemented in low clearance mode - Google Patents
Assembled underground continuous wall capable of being implemented in low clearance mode Download PDFInfo
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- CN214005692U CN214005692U CN202022898536.3U CN202022898536U CN214005692U CN 214005692 U CN214005692 U CN 214005692U CN 202022898536 U CN202022898536 U CN 202022898536U CN 214005692 U CN214005692 U CN 214005692U
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Abstract
The utility model provides a but assembled underground continuous wall that low headroom implemented, include: the steel plate comprises a first I-shaped steel member and a second I-shaped steel member, wherein male joints are arranged at two ends of an upper flange and a lower flange of the first I-shaped steel member; female joints are arranged at two ends of the upper flange and the lower flange of the second I-shaped steel member; the first I-shaped steel member and the second I-shaped steel member are arranged adjacently, a male joint on one side of the first I-shaped steel member is inserted into a female joint of the adjacent second I-shaped steel member along the vertical direction, and the first I-shaped steel member and the second I-shaped steel member are nested together. Compared with a cast-in-place underground continuous wall, the utility model has the advantages of assembly, low mud discharge, high work efficiency, reliable quality and the like; the section steel components adopted in construction can be pulled out and recovered, so that energy is saved and consumption is reduced; the low-clearance implementation can be realized, and an efficient space enclosing structure form is provided for the underground space development under the existing building.
Description
Technical Field
The utility model relates to a building engineering field specifically, relates to an assembled underground continuous wall that can low headroom implement, is applicable to the foundation ditch retaining structure system in fields such as underground space development, underground works.
Background
In recent years, the development and utilization of urban underground space in China enter a rapid growth stage. The development and utilization of urban underground space become important measures for building resource-saving and environment-friendly society and realizing ecological civilization, and the scale and difficulty of underground space development are getting larger and larger. The development of urban deep and large underground space relates to a large amount of deep and large foundation pit engineering, and along river coastal areas represented by sea, Tianjin, Nanjing and the like, soil layers are weak, water content is high, and underground water level is high. In addition, along with the requirement of urban functions, more and more urban updating and reconstruction projects are provided for developing underground spaces under existing protective buildings to realize building function improvement, and the traditional cast-in-place underground continuous wall technology cannot meet the construction operation requirements of existing buildings under low clearance conditions, so that urgent engineering requirements are provided for the research and development of the novel underground continuous wall technology capable of meeting the low clearance implementation.
Through search, the Chinese patent with the application number of CN201811190402.7 discloses an underground continuous wall of an assembled lattice steel type TRD construction method and a construction method thereof, wherein the continuous wall comprises a TRD construction method wall, a lattice assembly is arranged in the TRD construction method wall, and the lattice assembly comprises narrow-wing I-shaped steel and linear steel sheet piles positioned on the outer sides of two flanges of the narrow-wing I-shaped steel. And locking notches are formed at two ends of the linear steel sheet pile. And the linear steel sheet piles on the outer sides of the flanges on the same side adjacent to the narrow-wing I-shaped steel are connected through locking notches of the linear steel sheet piles.
However, the narrow-wing I-shaped steel and the linear steel plate are arranged independently, so that the overall rigidity is weakened, and the bending rigidity of the combined structure is not calculated clearly, so that the combined structure is not convenient for engineering personnel to apply; the I-shaped steel and the steel plate need to be inserted twice, the construction procedures are increased, the work efficiency is reduced, no low-clearance implementation measures exist, and the construction cannot ensure that the I-shaped steel and the steel plate are adhered together; the locking notch type at the end part of the steel plate is not beneficial to the nesting construction of the super-long steel.
SUMMERY OF THE UTILITY MODEL
To the defects in the prior art, the utility model aims at providing a but assembled underground continuous wall of low headroom implementation.
The utility model provides a but assembled underground continuous wall that low headroom implemented, include:
the steel pipe comprises a first I-shaped steel member, wherein male joints are arranged at two ends of an upper flange and a lower flange of the first I-shaped steel member;
the two ends of the upper flange and the lower flange of the second I-shaped steel component are provided with female joints;
the first I-shaped steel member and the second I-shaped steel member are arranged adjacently, the male joint on one side of the first I-shaped steel member is inserted into the female joint of the adjacent second I-shaped steel member along the vertical direction, and the first I-shaped steel member and the second I-shaped steel member are nested together.
Preferably, the fabricated underground diaphragm wall capable of being implemented with low headroom includes:
the first I-shaped steel members and the second I-shaped steel members are sequentially arranged at intervals, and the adjacent first I-shaped steel members and the second I-shaped steel members are mutually nested and assembled into a whole.
Preferably, the first I-shaped steel member is formed by splicing a plurality of first sections end to end; the first segment is of an I-shaped structure with a cross section formed by two first flange plates and a first web plate.
Preferably, the adjacent first segments are connected by bolts or screws.
Preferably, the male joint is a linear section steel, the linear section steel is arranged along the length direction of the end part of the first flange plate, the linear section steel is orthogonal to and welded to the first flange plate, and the section of the linear section steel and the first flange plate is of a T-shaped structure.
Preferably, the second I-shaped steel member is formed by splicing a plurality of second sections end to end; the second section is of an I-shaped structure formed by two second flange plates and a second web plate.
Preferably, the adjacent second segments are connected by bolts or screws.
Preferably, the female joint is C-shaped steel, the C-shaped steel is arranged along the length direction of the end of the second flange plate, and the notch of the C-shaped steel faces away from the second flange plate, so that the male joint can be inserted into the C-shaped steel from the notch along the vertical direction; the C-shaped section steel and the second flange plate are orthogonal and welded.
Preferably, top sections of the first I-shaped steel member and the second I-shaped steel member are provided with crown beam areas, and the length of flanges of the crown beam areas is smaller than the length of flanges of the first I-shaped steel member and the second I-shaped steel member, so that flanges of the top sections of the first I-shaped steel member and the second I-shaped steel member are arranged at intervals to meet the stirrup setting requirement of a crown beam.
Preferably, the first I-shaped steel member and the second I-shaped steel member are arranged in the cement mixing wall.
Compared with the prior art, the utility model discloses at least one kind's beneficial effect as follows has:
the assembled underground continuous wall is formed by assembling the first I-shaped steel component and the second I-shaped steel component which are sequentially nested with each other, the construction process is simple, and the efficiency is high and the speed is high; the first I-shaped steel member and the second I-shaped steel member are connected in an embedded mode through the male and female joints, the guiding performance is good, the embedded assembly mode is adopted, the connection mode of the adjacent steel members is firm, the ultra-deep section steel construction is convenient, the rigidity of a continuous wall formed after embedding is large, the stress calculation is clear, and the design and the application of engineering personnel are easy; the assembled underground continuous wall can solve the problems of slurry discharge amplification, low construction efficiency, difficult quality control and the like of the cast-in-place concrete underground continuous wall; compared with a cast-in-place underground continuous wall, the cast-in-place underground continuous wall has the characteristics of assembly, low mud discharge, high work efficiency, reliable quality and the like; the section steel component can be pulled out and recovered, so that energy is saved and consumption is reduced; and can be used as a permanent basement structure outer wall.
The utility model discloses above-mentioned assembled underground continuous wall inserts thickness cement stirring wall such as above-mentioned first I type steel component, second I type steel component, and nested steel component rigidity is big each other, and the steel component is wrapped up by cement, and it is good to separate the infiltration performance, can satisfy the requirement that big degree of depth foundation ditch engineering enclosure water proof kept off the soil.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic cross-sectional view of a fabricated underground diaphragm wall which can be implemented with low headroom according to a preferred embodiment of the present invention;
FIG. 2 is a three-dimensional schematic view of a fabricated underground diaphragm wall which can be implemented with low headroom according to a preferred embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a first I-section steel member according to a preferred embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a second I-section steel member according to a preferred embodiment of the present invention;
FIG. 5 is a top plan view of a first section of a first I-beam member according to a preferred embodiment of the present invention;
FIG. 6 is a side view of a first section of a first I-beam member according to a preferred embodiment of the present invention assembled adjacent to each other;
the scores in the figure are indicated as: the first I-shaped steel member is 1, the second I-shaped steel member is 2, the first flange plate is 11, the first web plate is 12, the male joint is 13, the second flange plate is 21, the second web plate is 22, the female joint is 23, the first section is the uppermost section is 1a, the first section is the lower section is 1b, the second section is the uppermost section is 2a, the second section is 2b, the crown beam area is 3, the cement mixing wall is 4, the web plate splicing splint is 5, the outer side splicing splint is 6, the inner side splicing splint is 7, the first bolt is 8, and the second bolt is 9.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
Referring to fig. 1, it is a schematic cross-sectional view of the fabricated underground diaphragm wall that can be implemented with low headroom according to a preferred embodiment of the present invention, which can be used as an energy-saving and efficient fabricated enclosure structure for deep and large foundation pit engineering, and is particularly suitable for being used as a low headroom implemented foundation pit enclosure structure for opening underground space under existing buildings. The first I-shaped steel member 1 and the second I-shaped steel member 2 are inserted into a cement mixing wall 4, and the first I-shaped steel member 1 and the second I-shaped steel member 2 are sequentially arranged at intervals and adjacently assembled into a whole.
Wherein, the two ends of the upper and lower flanges of the first I-shaped steel component 1 are provided with male joints 13. Female joints 23 are provided at both ends of the upper and lower flanges of the second I-section steel member 2. The male joint 13 on one side of the first I-shaped steel member 1 is inserted into the female joint 23 of the adjacent second I-shaped steel member 2 along the vertical direction, and the first I-shaped steel member 1 and the second I-shaped steel member 2 are nested together. In other partially preferred embodiments, the fabricated underground diaphragm wall implemented with low headroom includes: the steel plate comprises a plurality of first I-shaped steel members 1 and a plurality of second I-shaped steel members 2, wherein the first I-shaped steel members 1 and the second I-shaped steel members 2 are sequentially arranged at intervals, and the adjacent first I-shaped steel members 1 and the adjacent second I-shaped steel members 2 are mutually nested and assembled into a whole. Referring to FIG. 2, the first and second I- shaped steel members 1 and 2 are each two in number. Inserting the upper and lower male joints 13 of one side of a first I-shaped steel member 1 into the two female joints 23 of the same side of the adjacent second I-shaped steel member 2, respectively, arranging another first I-shaped steel member 1 at the adjacent position of the other side of the second I-shaped steel member 2, inserting the upper and lower male joints 13 of one side of the first I-shaped steel member 1 into the two female joints 23 of the other side of the second I-shaped steel member 2, respectively, and inserting the two male joints 13 of the other side of the first I-shaped steel member 1 into the two female joints 23 of another second I-shaped steel member 2, thereby assembling the two first I-shaped steel members 1 and the two second I-shaped steel members 2 into a whole.
In other partially preferred embodiments, the first I-shaped steel member 1 is formed by splicing a plurality of first sections end to end; referring to FIG. 2, the first I-shaped steel member 1 is integrally spliced to the lower section 1b from the end of the uppermost section 1 a. The first segment is processed into an integral structure with an I-shaped cross section by two first flange plates 11 and a first web plate 12, wherein the two first flange plates 11 are respectively connected to two ends of the first web plate 12. Preferably, the heads and the tails of the two first sections are mechanically connected by bolts or screws. The method specifically comprises the following steps: referring to fig. 5 and 6, the first flange plates 11 of the two first sections are spliced to form flange outer side splicing clamping plates 6 and flange inner side splicing clamping plates 7, the flange outer side splicing clamping plates 6 and the flange inner side splicing clamping plates 7 are respectively located on the inner sides and the outer sides of the splicing positions of the first flange plates 11, and the plurality of first bolts 8 sequentially penetrate through the flange outer side splicing clamping plates 6, the first flange plates 11 and the flange inner side splicing clamping plates 7 to enable the three to be connected into a whole. Two web splicing splints 5 are arranged at the splicing position of the first webs 12 of the two first sections, the two web splicing splints 5 are respectively clamped on two sides of the first web 12, and a plurality of second bolts 9 sequentially penetrate through one of the web splicing splints 5, the first web 12 and the other web splicing splint 5 to connect the three into a whole. During specific implementation, the specifications of the flange outer side splicing clamping plate 6, the flange inner side splicing clamping plate 7 and the web plate splicing clamping plate 5 and the specifications of the first bolt 8 and the second bolt 9 are determined according to the requirements of strong connection of section steel and the like. The number of the first sections of the first I-type steel members 1 may be arranged according to the construction site clearance requirement. During specific construction, the lower section first section can be hoisted to a designated position, then the upper section first section is hoisted to the upper part of the lower section first section, and the lower end of the upper section first section is aligned with the upper end of the lower section first section and then spliced.
The thicknesses of the two first flange plates 11 and the first web plates 12 can be designed according to engineering requirements. Taking an application project as an example: the height of the I-shaped steel (Q235) is 900mm, and the width of the I-shaped steel is 700 mm; wherein the thickness of the first web plate 12 is 16mm, the thickness of the first flange plate 11 is 28mm, and the bending rigidity is equivalent to that of a concrete underground continuous wall with the height of 980mm (C30).
In other partially preferred embodiments, the male connector 13 is a straight profile steel. The linear section steel is arranged along the length direction of the end part of the first flange plate 11, the linear section steel is orthogonal to the first flange plate 11 and welded with the first flange plate 11, and the section formed by the linear section steel and the first flange plate 11 is of a T-shaped structure. In the process of connecting the first I-shaped steel member 1 and the second I-shaped steel member 2, the male joint 13 has a guiding function, and implementation of the ultra-deep steel wall body can be guaranteed. In specific implementation, a full-length straight-line-shaped steel is welded to the end parts of the two first flange plates 11 of the first I-shaped steel member 1. Referring to fig. 3, four pieces of in-line shaped steel are orthogonally welded to the first flange plate 11 to form four male joints 13.
In other partially preferred embodiments, the second I-shaped steel member 2 is formed by splicing a plurality of second sections end to end; referring to fig. 2, the second I-section steel member is integrally spliced from the tail end of the uppermost second section 22a and the head end of the lower second section 22 b. The second segment is processed into an i-shaped integral structure by two second flange plates 21 and a second web plate 22, wherein the two second flange plates 21 are respectively connected to two ends of the second web plate 22. Preferably, the two second segments are connected by splicing the first segments. The specific connection mode can be seen in fig. 5 and 6. The second flange plate 21 and the second web plate 22 of the second I-beam member 2 may have the same or different specifications as the first I-beam member 1.
In other preferred embodiments, the female connector 23 is a C-shaped steel, the C-shaped steel is arranged along the length of the end of the second flange 21, and the notch of the C-shaped steel faces away from the second flange 21, so that the male connector 13 can be inserted into the C-shaped steel from the notch along the vertical direction; the C-shaped section steel is orthogonal to the second flange plate 21 and welded thereto. In specific implementation, the full-length C-shaped steel is welded at the end parts of the two second flange plates 21 of the second I-shaped steel component 2. Referring to fig. 4, four female connectors 23 are formed by welding four pieces of C-shaped steel orthogonal to the second flange plate 21.
In the above embodiment, the specification of the in-line section steel and the specification of the C-shaped section steel can be determined according to the design requirements, and it is ensured that the male connector 13 can be inserted into the female connector 23 in the vertical direction, and at the same time, can be firmly nested together without being separated. Taking an application project as an example: the specification of the male tab 13 is 76mm (width) × 28mm (thickness); the female joint 23 is formed by processing a grooved round steel pipe, and has an inner diameter of 106mm, an outer diameter of 130mm, a wall thickness of 12mm and an opening size of 48 mm.
In other preferred embodiments, the foundation pit enclosure structure generally needs to be provided with a supporting crown beam and an enclosing purlin, as shown in fig. 2, the top sections of the first I-shaped steel member 1 and the second I-shaped steel member 2 need to be provided with a crown beam area 3, and the flange plate of the crown beam area 3 is processed into a flange with a reduced length, that is, the flange length of the crown beam area 3 is smaller than the flange length of the bodies of the first I-shaped steel member 1 and the second I-shaped steel member 2. The flanges 11 in the range are arranged at intervals to meet the stirrup setting requirement of the crown beam. The area that need set up the purlin can be realized through the mode of welding on-the-spot on shaped steel component hang muscle or peg.
The fabricated underground continuous wall can be only used as a temporary enclosure structure in the foundation pit implementation stage, and the section steel member can be pulled out and recycled for recycling after the underground structure is implemented; the structural steel can be used as a permanent basement structure outer wall, and the components such as studs and the like which need to be reserved on the structural steel can be determined according to design requirements when the structural steel is used as the permanent basement structure outer wall.
Another embodiment provides a construction method of a prefabricated underground continuous wall capable of being implemented with low headroom, for constructing the prefabricated underground continuous wall capable of being implemented with low headroom, the construction method may include the following steps:
and S1, preparing a plurality of first I-shaped steel members 1 and a plurality of second I-shaped steel members 2 which meet the requirements of clearance and stress of a construction site.
And S2, constructing the equal-thickness cement-soil mixing wall 4 in the low-headroom working area.
S3, hoisting one first I-shaped steel member 1 and inserting the first I-shaped steel member into a cement-soil mixing wall 4, hoisting a second I-shaped steel member 2 into the cement-soil mixing wall 4 and enabling the second I-shaped steel member to be adjacent to the first I-shaped steel member 1, nesting a female joint 23 on one side of the second I-shaped steel member 2 with a male joint 13 of the adjacent first I-shaped steel member 1, hoisting the other first I-shaped steel member to the other side of the second I-shaped steel member, and nesting the male joint of the first I-shaped steel member with a female joint on the other side of the second I-shaped steel member; the first I-shaped steel members and the second I-shaped steel members are sequentially arranged at intervals, and adjacent sides are connected in a nested manner through female joints and male joints to form the assembled underground continuous wall.
In other partially preferred embodiments, the equal-thickness cement-soil mixing wall 4 is constructed in a low-clearance working area, and the cement-soil mixing wall 4 can be formed by a channel cutting cement-soil mixing wall 4 device or a milling cement-soil mixing wall 4 device. The ditch type cutting cement mixing wall 4 equipment and the suspension type milling cement mixing wall 4 equipment can operate under the clearance of 7m, the cement mixing walls 4 constructed by the two kinds of equipment are continuous in equal thickness, the mixing uniformity of cement wall bodies is good, the maximum wall forming depth can reach 80m, the verticality can reach 1/500, the ditch type cutting cement mixing wall is suitable for various soft and hard stratums, and the construction environment influence is small. The profile steel member is inserted into the cement soil wall body and is wrapped by cement soil with certain strength, the permeability insulation performance is good, and the requirement of large-depth foundation pit engineering enclosure water-resisting soil-retaining under the low clearance condition can be met.
In conclusion, compared with a cast-in-place underground continuous wall, the assembled underground continuous wall capable of being implemented in a low clearance mode and the construction method thereof have the advantages of being assembled, low in mud discharge, high in work efficiency, reliable in quality and the like; the section steel component can be pulled out and recovered, so that energy is saved and consumption is reduced; can also be used as a permanent basement structure outer wall; meanwhile, the construction can be carried out in a low clearance mode, and an efficient space enclosing structure form is provided for underground space development under the existing building.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the invention.
Claims (10)
1. A fabricated underground diaphragm wall which can be implemented with low headroom, comprising:
the steel pipe comprises a first I-shaped steel member, wherein male joints are arranged at two ends of an upper flange and a lower flange of the first I-shaped steel member;
the two ends of the upper flange and the lower flange of the second I-shaped steel component are provided with female joints;
the first I-shaped steel member and the second I-shaped steel member are arranged adjacently, the male joint on one side of the first I-shaped steel member is inserted into the female joint of the adjacent second I-shaped steel member along the vertical direction, and the first I-shaped steel member and the second I-shaped steel member are nested together.
2. The fabricated underground diaphragm wall implemented with low headroom as claimed in claim 1, comprising:
the first I-shaped steel members and the second I-shaped steel members are sequentially arranged at intervals, and the adjacent first I-shaped steel members and the second I-shaped steel members are mutually nested and assembled into a whole.
3. The fabricated underground diaphragm wall capable of being implemented with low headroom as claimed in claim 1, wherein the first I-type steel member is integrally spliced end to end by a plurality of first segments; the first segment is of an I-shaped structure with a cross section formed by two first flange plates and a first web plate.
4. The fabricated underground diaphragm wall implemented with low headroom as claimed in claim 3, wherein the adjacent first segments are connected by bolts or screws.
5. The fabricated underground diaphragm wall with low clearance for construction as claimed in claim 3, wherein the male connector is a straight section steel, the straight section steel is disposed along the length of the end of the first flange plate, the straight section steel is perpendicular to and welded to the first flange plate, and the straight section steel and the first flange plate form a T-shaped structure in cross section.
6. The fabricated underground diaphragm wall capable of being implemented with low headroom as claimed in claim 1, wherein the second I-type steel member is integrally spliced end to end by a plurality of second segments; the second section is of an I-shaped structure formed by two second flange plates and a second web plate.
7. The fabricated underground diaphragm wall capable of being implemented with low headroom as claimed in claim 6, wherein the adjacent second segments are connected by bolts or screws.
8. The fabricated underground diaphragm wall with low headroom as claimed in claim 6, wherein the female connector is C-shaped steel disposed along the length of the end of the second flange with the notch of the C-shaped steel facing away from the second flange so that the male connector can be inserted into the C-shaped steel from the notch in a vertical direction; the C-shaped section steel and the second flange plate are orthogonal and welded.
9. A low headroom practical fabricated diaphragm wall as claimed in any one of claims 1 to 8, wherein the top sections of the first and second type I sections are each provided with a crown beam region having a flange length smaller than that of the body of the first and second type I sections, so that the flanges of the top sections of the first and second type I sections are spaced apart to meet the stirrup setting requirement of the crown beam.
10. A low headroom practicable fabricated underground continuous wall as claimed in any one of claims 1 to 8, wherein the first type I steel member and the second type I steel member are provided in a cement mixing wall.
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| CN202022898536.3U CN214005692U (en) | 2020-12-03 | 2020-12-03 | Assembled underground continuous wall capable of being implemented in low clearance mode |
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| CN202022898536.3U CN214005692U (en) | 2020-12-03 | 2020-12-03 | Assembled underground continuous wall capable of being implemented in low clearance mode |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113957879A (en) * | 2021-11-16 | 2022-01-21 | 青岛海大建科岩土工程有限公司 | Assembled type steel-inserted underground continuous wall |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113957879A (en) * | 2021-11-16 | 2022-01-21 | 青岛海大建科岩土工程有限公司 | Assembled type steel-inserted underground continuous wall |
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