CN112502356A - Permanent steel lattice column for reverse construction method structure construction and changing and cutting construction method - Google Patents

Permanent steel lattice column for reverse construction method structure construction and changing and cutting construction method Download PDF

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Publication number
CN112502356A
CN112502356A CN202011527754.4A CN202011527754A CN112502356A CN 112502356 A CN112502356 A CN 112502356A CN 202011527754 A CN202011527754 A CN 202011527754A CN 112502356 A CN112502356 A CN 112502356A
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CN
China
Prior art keywords
steel
column
construction
underpinning
plate
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Pending
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CN202011527754.4A
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Chinese (zh)
Inventor
詹必雄
周予启
牛家乐
刘飞龙
王谦
任耀辉
谢飞飞
韩鞠
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China Construction First Group Construction and Development Co Ltd
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China Construction First Group Construction and Development Co Ltd
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Publication date
Application filed by China Construction First Group Construction and Development Co Ltd filed Critical China Construction First Group Construction and Development Co Ltd
Priority to CN202011527754.4A priority Critical patent/CN112502356A/en
Publication of CN112502356A publication Critical patent/CN112502356A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/30Columns; Pillars; Struts
    • E04C3/32Columns; Pillars; Struts of metal
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work

Abstract

The application relates to a permanent steel lattice column for reverse construction method structure construction and a construction method for changing and cutting, and relates to the technical field of reverse construction method construction. This device includes the structural slab, and the structural slab is provided with the head steel sheet, and the top of structural slab is provided with the steel wedge that is located head steel sheet bottom. According to the method, when the method is actually used, the profile steel underpinning column needing to be cut due to design change is underpinned by adopting the profile steel underpinning construction method, so that the smooth construction of the subsequent structural column is ensured, meanwhile, the structural safety is ensured not to be influenced, the formal structural column size can be ensured to completely comply with the design requirement, compared with the conventional method for increasing the size of the outer-wrapped formal structural column, the influence on the subsequent decoration and electromechanical construction space is avoided, the construction quality of the subway structure is ensured, the size and the prestress of the profile steel underpinning column can be adjusted according to the difference of the structural form and the stress size, and the construction is flexible and convenient.

Description

Permanent steel lattice column for reverse construction method structure construction and changing and cutting construction method
Technical Field
The application relates to the field of reverse construction method construction, in particular to a permanent steel lattice column for reverse construction method structure construction and a changing and cutting construction method.
Background
The invention relates to a permanent steel lattice column cutting technology in reverse construction, wherein when the design is changed during reverse construction, part of the permanent steel lattice column collides with an externally-coated reinforced concrete structure, or the permanent steel lattice column is positioned outside a permanent reinforced concrete frame column, becomes a useless component and needs to be removed.
At present, when the permanent steel lattice column is changed in design, the lattice column is not dismantled in the conventional method, but the size of an outer-wrapped formal structural column is increased, the formal structural column size required by the design is changed, subsequent decoration and electromechanical construction space are affected, and the construction requirement cannot be met.
Disclosure of Invention
In order to solve the technical problem that the size of a formal structural column required by design can be changed when the design of the conventional permanent steel lattice column is changed, the application provides a permanent steel lattice column for reverse construction method structural construction and a construction method for changing and cutting.
The application provides a reverse construction method is permanent steel lattice column and change excision construction method for structure construction, adopts following technical scheme: the utility model provides a reverse construction method is permanent steel lattice column for structure construction, including the structural slab, the structural slab is provided with the head steel sheet, the top of structural slab is provided with the steel wedge that is located head steel sheet bottom, the top of structural slab is provided with the non-shrink grout material piece that is located head steel sheet bottom, the both sides at head steel sheet top all are provided with the installation component, there is the shaped steel underpinning post at the top of head steel sheet through two installation component fixed mounting, the both sides that the shaped steel underpinned the post all are provided with steel corbel stiffening plate subassembly, the inside that the shaped steel underpinned post front side and rear side all has stiffening rib plate through fixed component fixed mounting, the head steel sheet is through four crab-bolts fixed mounting on the structural slab, the equal fixed mounting in both sides at structural slab top has hydraulic jack, hydraulic jack.
By adopting the technical scheme, when in actual use, the profile steel underpinning construction method is adopted to underpin the profile steel underpinning column which needs to be cut off due to design change, thereby ensuring the smooth construction of the subsequent structural column, ensuring that the structural safety is not influenced, ensuring that the size of the formal structural column completely conforms to the design requirement, compared with the conventional method for increasing the size of the outer wrapping formal structural column, avoiding the influence on the subsequent decoration and electromechanical construction space, ensuring the quality of subway structural construction, adjusting the size and the prestress of the profile steel underpinning column according to the difference of the structural form and the stress size, determining the underpinning construction parameters of different parts only by carrying out necessary calculation, ensuring flexible and convenient construction, applying prestress by adopting the hydraulic jack with reading, better controlling the construction process, ensuring the structural safety, and recycling the profile steel underpinning column for many times, energy saving and environmental protection effects are good.
Preferably, the top of head steel sheet can be opened and be equipped with two reservation and pour the hole, and the reservation is pour the hole and is located the left side of stiffening rib board.
Preferably, the height of the stiffening rib plate is half of the profile steel underpinning column, and the width of the stiffening rib plate is half of the front and back width of the profile steel underpinning column.
Preferably, the installation component is including being located the long rail in the shaped steel underpins the post outside and being located two short rails of shaped steel underpins the inboard of post, runs through between two short rails and the long rail and is provided with the lead screw, and the bottom of long rail and short rail all runs through and is provided with fixing bolt, and the one end threaded connection on lead screw surface has set nut, and the other end threaded connection on lead screw surface has fastening nut.
Preferably, the long rail and the short rail are both fixedly installed on the structural slab through fixing bolts, and the long rail and the short rail are fixedly installed on the section steel underpinning column through screw rods.
Preferably, the steel bracket stiffening plate assembly comprises a supporting plate fixedly mounted on the hydraulic jack, the top of the supporting plate is fixedly connected with three rib plates, and one side of each rib plate is fixedly connected to the profile steel underpinning column.
Preferably, the three rib plates are in the shape of a right triangle, and two right-angle sides of the rib plates are respectively welded on the profile steel underpinning column and the supporting plate.
Preferably, the fixed component comprises an L-shaped connecting piece, two right-angle edges of the L-shaped connecting piece are provided with mounting bolts in a penetrating mode, and the two right-angle edges of the L-shaped connecting piece are fixedly mounted on the section steel underpinning column and the stiffening rib plate respectively through the mounting bolts.
Preferably, double nuts are installed on the top of the top surface of the hydraulic jack in a threaded mode, and a base plate located at the bottoms of the double nuts is sleeved on the surface of the hydraulic jack.
A permanent steel lattice column for the structural construction of a reverse construction method and a construction method for changing and cutting off are disclosed, wherein the construction method comprises the following steps:
firstly, determining the positioning of the section steel underpinning column according to the form of a subway station structure, calculating the stress condition of the steel tapping lattice column, and then determining the size of the section steel underpinning column and the size of prestress according to the calculation result.
And secondly, determining the length of the section steel underpinning column according to the actually measured layer height on site, welding and processing the end enclosure steel plate, the stiffening rib plate, the steel corbel stiffening plate assembly and other components in advance, directly installing the end enclosure steel plate, the stiffening rib plate, the steel corbel stiffening plate assembly and the like on site, and forming a reserved pouring hole in the end enclosure steel plate at the bottom end of the section steel underpinning column.
And thirdly, after the section steel underpinning column is processed, the section steel underpinning column is transported to the site, and is installed in place by using the hand-pulled guide chain, the upper end head of the section steel underpinning column is fixed with an anchor bolt hole which is formed in the structural plate in advance by using an anchor bolt, and the hand-pulled guide chain cannot be loosened in the whole fixing process.
And fourthly, applying prestress to the section steel underpinning columns, firstly applying prestress to each section steel underpinning column by adopting two symmetrical hydraulic jacks, then plugging a gap between the end socket steel plate and the structural plate by using a steel wedge, wherein no less than three steel wedges are arranged on the end socket steel plate, the position of each steel wedge corresponds to a section steel rib plate, then fixing the steel wedge and the end socket steel plate by spot welding, pouring C non-shrinkage grouting material into the gap through a reserved pouring hole on the end socket steel plate, then forming a non-shrinkage grouting material block, pouring until the top surface of a reserved pouring orifice is filled, and removing the jacks after the strength of the grouting material reaches percent.
Fifthly, cutting off the profile steel underpinning columns after the installation of the profile steel underpinning columns on the two sides is completed, immediately constructing an outer-wrapped frame column after the cutting off is completed, and dismantling the profile steel underpinning columns after the strength of the frame column concrete reaches percent.
In summary, the present application includes at least one of the following beneficial technical effects:
firstly, when the steel section underpinning device is actually used, the section steel underpinning method is adopted to underpin the section steel underpinning column which needs to be cut due to design change, so that the subsequent smooth construction of the structural column is ensured, and meanwhile, the structural safety is not influenced.
And secondly, the size of the formal structure column can be ensured to completely comply with the design requirement, and compared with the conventional method for increasing the size of the wrapped formal structure column, the influence on subsequent decoration and electromechanical construction space is avoided, and the construction quality of the subway structure is ensured.
And thirdly, the size and the prestress of the profile steel underpinning column can be adjusted according to different structural forms and stress sizes, and the parameters of underpinning construction at different parts can be determined only by necessary calculation, so that the construction is flexible and convenient.
And fourthly, applying prestress by adopting a hydraulic jack with reading, so that the construction process can be better controlled, and the structure safety is ensured.
And fifthly, the profile steel underpinning column can be recycled for multiple times, and the energy-saving and environment-friendly effects are good.
Drawings
FIG. 1 is a schematic of the present invention.
Fig. 2 is a front perspective view of the present invention.
FIG. 3 is a cross-sectional view of a section steel underpinning column of the present invention.
Fig. 4 is a partial enlarged view of a in fig. 3 according to the present invention.
Fig. 5 is a perspective view of the steel corbel stiffener assembly of the present invention.
Fig. 6 is a perspective view of the mounting assembly of the present invention.
Fig. 7 is a perspective view showing the separation of the steel wedge and the non-shrink grouting block according to the present invention.
Description of reference numerals: 1. a structural panel; 2. sealing a steel plate; 3. steel wedge; 4. a shrinkage-free grouting material block; 5. mounting the component; 6. underpinning the section steel; 7. a stiffening rib plate; 8. a steel corbel stiffening plate assembly; 9. a hydraulic jack; 10. an anchor bolt; 11. reserving a pouring hole; 12. a fixing member; 51. a long rail; 52. a screw rod; 53. positioning a nut; 54. fastening a nut; 55. fixing the bolt; 56. short rails; 81. a support plate; 82. a rib plate; 121. an L-shaped connector; 122. and (6) installing a bolt.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The first embodiment is as follows:
with reference to fig. 1-7, the embodiment of the application discloses a permanent steel lattice column for reverse construction method structure construction and a modified cutting construction method, the permanent steel lattice column comprises a structural slab 1, the structural slab 1 is provided with a head steel plate 2, the top of the structural slab 1 is provided with a steel wedge 3 positioned at the bottom of the head steel plate 2, the top of the structural slab 1 is provided with a non-shrinkage grouting block 4 positioned at the bottom of the head steel plate 2, both sides of the top of the head steel plate 2 are provided with mounting components 5, the top of the head steel plate 2 is fixedly provided with a section steel underpinning column 6 through two mounting components 5, both sides of the section steel underpinning column 6 are provided with steel corbel stiffening plate components 8, the insides of the front side and the rear side of the section steel underpinning column 6 are fixedly provided with stiffening rib plates 7 through fixing components 12, the head steel plate 2 is fixedly mounted on the structural slab 1 through four anchor bolts 10, both sides, the top of a hydraulic jack 9 is fixedly arranged on a steel bracket stiffening plate component 8, the top of a head steel plate 2 can be provided with two reserved pouring holes 11, the reserved pouring holes 11 are positioned at the left side of a stiffening rib plate 7, the height of the stiffening rib plate 7 is one half of the front and back width of a section steel underpinning column 6, the width of the stiffening rib plate 7 is one half of the front and back width of the section steel underpinning column 6, an installation component 5 comprises a long rail 51 positioned at the outer side of the section steel underpinning column 6 and two short rails 56 positioned at the inner side of the section steel underpinning column 6, a screw rod 52 is arranged between the two short rails 56 and the long rail 51 in a penetrating manner, fixing bolts 55 are arranged at the bottoms of the long rail 51 and the short rail 56 in a penetrating manner, one end of the surface of the screw rod 52 is in a threaded manner connected with a positioning nut 53, the other end of the surface, the long rail 51 and the short rail 56 are fixedly arranged on the section steel underpinning column 6 through a screw rod 52, the steel bracket stiffening plate component 8 comprises a supporting plate 81 fixedly arranged on a hydraulic jack 9, the top of the supporting plate 81 is fixedly connected with three ribbed plates 82, one sides of the three ribbed plates 82 are fixedly connected on the section steel underpinning column 6, the three ribbed plates 82 are in the shape of a right triangle, two right-angle edges of the ribbed plates 82 are respectively welded on the section steel underpinning column 6 and the supporting plate 81, the fixing component 12 comprises an L-shaped connecting piece 121, two right-angle edges of the L-shaped connecting piece 121 are respectively provided with a mounting bolt 122 in a penetrating way, two right-angle edges of the L-shaped connecting piece 121 are respectively and fixedly arranged on the section steel underpinning column 6 and a stiffening ribbed plate 7 through the mounting bolts 122, double nuts are arranged on the top thread of the surface of the hydraulic jack 9, a backing plate, the profile steel underpinning method is adopted to underpin the profile steel underpinning column 6 which needs to be cut due to design change, so that the smooth construction of a subsequent structural column is ensured, meanwhile, the structural safety is ensured not to be influenced, the size of a formal structural column can be ensured to completely comply with the design requirement, compared with the conventional method for increasing the size of an outer-wrapped formal structural column, the influence on subsequent decoration and electromechanical construction space is avoided, the quality of subway structure construction is ensured, the size and the prestress size of the profile steel underpinning column 6 can be adjusted according to the difference of the structural form and the stress size, the underpinning construction parameters of different parts can be determined only by carrying out necessary calculation, the construction is flexible and convenient, the prestress is applied by adopting the hydraulic jack 9 with reading, the construction process can be better controlled, the structural safety is ensured, the profile steel underpinning column 6 can be recycled for multiple.
The invention relates to a permanent steel lattice column for reverse construction method structure construction and a construction method for changing and cutting, wherein the construction method comprises the following steps:
firstly, determining the positioning of the section steel underpinning column 6 according to the form of the subway station structure, calculating the stress condition of the steel lattice column, and then determining the size of the section steel underpinning column 6 and the size of the prestress according to the calculation result.
Secondly, the length of the section steel underpinning column 6 is determined according to the actually measured layer height on site, the end enclosure steel plate 2, the stiffening rib plates 7, the steel corbel stiffening plate assemblies 8 and other components are welded in advance and finished, the components are directly installed in place on site, and a reserved pouring hole 11 is formed in the end enclosure steel plate 2 at the bottom end of the section steel underpinning column 6.
And thirdly, after the section steel underpinning column 6 is processed, the section steel underpinning column is transported to the site, and is installed in place by using the hand-pulled guide chain, the upper end of the section steel underpinning column 6 is fixed with an anchor bolt hole which is formed on the structural slab 1 in advance by using an anchor bolt 10, and the hand-pulled guide chain cannot be loosened in the whole fixing process.
And fourthly, prestress is applied to the section steel underpinning columns 6, firstly, two symmetrical hydraulic jacks 9 are adopted for applying prestress to each section steel underpinning column 6, then, steel wedges 3 are used for plugging the gap between the end socket steel plate 2 and the structural plate 1, no less than three steel wedges 3 are arranged on the end socket steel plate 2, the positions of the steel wedges 3 correspond to the section steel rib plates, then, the steel wedges 3 and the end socket steel plate 2 are fixed in a spot welding mode, C60 non-shrinkage grouting material is poured into the gap through the reserved pouring holes 11 on the end socket steel plate 2, then, non-shrinkage grouting material blocks 4 are formed, the grouting material blocks are poured until the top surfaces of the openings of the reserved pouring holes 11, and the jacks are removed after the strength of the grouting material.
Fifthly, after the profiled bar underpinning columns 6 on the two sides are all installed, cutting off the profiled bar underpinning columns 6
After the construction is finished, the construction of the frame column is immediately carried out, and the section steel underpinning column 6 is dismantled after the concrete strength of the frame column reaches the standard.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides a reverse construction method is permanent steel lattice column for structure construction, includes structural slab (1), its characterized in that: the structural slab is characterized in that a head steel plate (2) is arranged on the structural slab (1), a steel wedge (3) located at the bottom of the head steel plate (2) is arranged at the top of the structural slab (1), a non-shrinkage grouting material block (4) located at the bottom of the head steel plate (2) is arranged at the top of the structural slab (1), mounting assemblies (5) are arranged on both sides of the top of the head steel plate (2), a section steel underpinning column (6) is fixedly mounted at the top of the head steel plate (2) through two mounting assemblies (5), steel corbel stiffening plate assemblies (8) are arranged on both sides of the section steel underpinning column (6), stiffening rib plates (7) are fixedly mounted in the front side and the rear side of the section steel underpinning column (6) through fixing members (12), the head steel plate (2) is fixedly mounted on the structural slab (1) through four anchor bolts (10), hydraulic jacks (9) are fixedly mounted on both sides of the top of the structural, the top of the hydraulic jack (9) is fixedly arranged on the steel corbel stiffening plate component (8).
2. The permanent steel lattice column for reverse construction of a structure according to claim 1, wherein: the top of head steel sheet (2) can be opened and be equipped with two reservation and pour hole (11), reservation is pour hole (11) and is located the left side of stiffening rib board (7).
3. The permanent steel lattice column for reverse construction of a structure according to claim 1, wherein: the height of the stiffening rib plate (7) is one half of the width of the section steel underpinning column (6), and the width of the stiffening rib plate (7) is one half of the front and back width of the section steel underpinning column (6).
4. The permanent steel lattice column for reverse construction of a structure according to claim 1, wherein: the mounting assembly (5) is including being located long rail (51) in shaped steel underpinning post (6) outside and being located two short rails (56) of shaped steel underpinning post (6) inboard, runs through between two short rails (56) and long rail (51) and is provided with lead screw (52), the bottom of long rail (51) and short rail (56) all runs through and is provided with fixing bolt (55), the one end threaded connection on lead screw (52) surface has set nut (53), the other end threaded connection on lead screw (52) surface has fastening nut (54).
5. The permanent steel lattice column for reverse construction of a structure according to claim 4, wherein: the long rail (51) and the short rail (56) are fixedly mounted on the structural slab (1) through fixing bolts (55), and the long rail (51) and the short rail (56) are fixedly mounted on the section steel underpinning column (6) through a screw rod (52).
6. The permanent steel lattice column for reverse construction of a structure according to claim 1, wherein: steel corbel stiffening plate subassembly (8) are including layer board (81) of fixed mounting on hydraulic jack (9), the three floor of top fixedly connected with (82) of layer board (81), the equal fixed connection in one side of three floor (82) is on shaped steel underpins post (6).
7. The permanent steel lattice column for reverse construction of claim 6, wherein: the three rib plates (82) are in the shape of a right triangle, and two right-angle sides of the rib plates (82) are respectively welded on the section steel underpinning column (6) and the supporting plate (81).
8. The permanent steel lattice column for reverse construction of a structure according to claim 1, wherein: the fixing component (12) comprises an L-shaped connecting piece (121), two right-angle sides of the L-shaped connecting piece (121) are provided with mounting bolts (122) in a penetrating mode, and the two right-angle sides of the L-shaped connecting piece (121) are fixedly mounted on the section steel underpinning column (6) and the stiffening rib plates (7) through the mounting bolts (122) respectively.
9. The permanent steel lattice column for reverse construction of a structure according to claim 1, wherein: two nuts are installed to the top screw thread on hydraulic jack (9) surface, the surface cover of hydraulic jack (9) is equipped with the backing plate that is located two nut bottoms.
10. A permanent steel lattice column changing and cutting construction method for reverse construction method structure construction comprises the following steps:
firstly, determining the positioning of a section steel underpinning column (6) according to the form of a subway station structure, calculating the stress condition of a steel lattice column, and then determining the size and the prestress of the section steel underpinning column (6) according to the calculation result;
secondly, determining the length of the section steel underpinning column (6) according to the actually measured layer height on site, welding and processing the end enclosure steel plate (2), the stiffening rib plate (7), the steel corbel stiffening plate assembly (8) and other components in advance, and directly installing the end enclosure steel plate (2) at the bottom end of the section steel underpinning column (6) in place on site, wherein a reserved pouring hole (11) is formed in the end enclosure steel plate (2);
thirdly, after the section steel underpinning column (6) is processed, the section steel underpinning column is transported to the site, and is installed in place by using a hand-pulled guide chain, the upper end of the section steel underpinning column (6) is fixed with an anchor bolt hole which is drilled on the structural plate (1) in advance by using an anchor bolt (10), and the hand-pulled guide chain cannot be loosened in the whole fixing process;
fourthly, prestress is applied to the section steel underpinning columns (6), firstly, two symmetrical hydraulic jacks (9) are applied to each section steel underpinning column (6), then, steel wedges (3) are used for plugging the gap between the end socket steel plate (2) and the structural plate (1), no less than three steel wedges (3) are arranged on the end socket steel plate (2), the positions of the steel wedges (3) correspond to the section steel rib plates, then, the steel wedges (3) and the end socket steel plate (2) are fixed in a spot welding mode, C60 non-shrinkage grouting material is poured into the gap through the reserved pouring holes (11) in the end socket steel plate (2), then non-shrinkage grouting material blocks (4) are formed and poured until the top surfaces of the reserved pouring holes (11), and after the strength of the grouting material reaches the standard, the jacks are removed;
fifthly, cutting off the profile steel underpinning columns (6) after the installation of the profile steel underpinning columns (6) on the two sides is completed, immediately constructing an outer-wrapped frame column after the cutting off is completed, and dismantling the profile steel underpinning columns (6) after the strength of the frame column concrete reaches a standard.
CN202011527754.4A 2020-12-22 2020-12-22 Permanent steel lattice column for reverse construction method structure construction and changing and cutting construction method Pending CN112502356A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011527754.4A CN112502356A (en) 2020-12-22 2020-12-22 Permanent steel lattice column for reverse construction method structure construction and changing and cutting construction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011527754.4A CN112502356A (en) 2020-12-22 2020-12-22 Permanent steel lattice column for reverse construction method structure construction and changing and cutting construction method

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Publication Number Publication Date
CN112502356A true CN112502356A (en) 2021-03-16

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2179900A1 (en) * 1993-12-31 1995-07-06 Joseph A. Skouras Lifting and shoring jack assembly
CN203066256U (en) * 2013-01-23 2013-07-17 同济大学 Split bolt connecting joint of H-type steel girder and rectangular pipe column by adopting angle steel at top and bottom
CN108951962A (en) * 2018-08-10 2018-12-07 杭州泽通建筑节能新材料有限公司 A kind of autoclaved aerated concrete slab exterior wall and construction method
CN211974459U (en) * 2020-03-26 2020-11-20 广东中森建设工程有限公司 Jacking underpinning structure of reinforced concrete column

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2179900A1 (en) * 1993-12-31 1995-07-06 Joseph A. Skouras Lifting and shoring jack assembly
CN203066256U (en) * 2013-01-23 2013-07-17 同济大学 Split bolt connecting joint of H-type steel girder and rectangular pipe column by adopting angle steel at top and bottom
CN108951962A (en) * 2018-08-10 2018-12-07 杭州泽通建筑节能新材料有限公司 A kind of autoclaved aerated concrete slab exterior wall and construction method
CN211974459U (en) * 2020-03-26 2020-11-20 广东中森建设工程有限公司 Jacking underpinning structure of reinforced concrete column

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
缪军等: "《地铁车站逆作法结构钢格构柱托换技术》", 《施工技术》 *

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