CN114215106A - Multi-pile support column structure adopting upper steel structure full-reverse construction method and construction method - Google Patents
Multi-pile support column structure adopting upper steel structure full-reverse construction method and construction method Download PDFInfo
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- CN114215106A CN114215106A CN202111558213.2A CN202111558213A CN114215106A CN 114215106 A CN114215106 A CN 114215106A CN 202111558213 A CN202111558213 A CN 202111558213A CN 114215106 A CN114215106 A CN 114215106A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
Abstract
The invention provides a multi-pile support column structure of an upper steel structure full reverse construction method and a construction method, when a steel structure at the upper part of a BO floor slab is constructed, a first steel column is not arranged on a concrete bearing platform close to a soil taking port, so that an operating space for construction in an excavating machinery room is reserved on the BO floor slab, a temporary steel truss is dismantled, a third steel column is arranged on the concrete bearing platform close to the soil taking port, and a post-construction steel beam is respectively connected with the third steel column and the first steel column, so that the problems that a single pile cannot bear the self weight and the construction load when the upper floor is higher in the upper steel structure full reverse construction method, the operating space of the excavating machinery is limited, and the earthwork construction efficiency is low are solved.
Description
Technical Field
The invention relates to a multi-pile support column structure adopting a full reverse construction method of an upper steel structure and a construction method.
Background
The reverse construction method is a construction method combining the main structure and the supporting structure, has the advantages of accelerating construction progress, having high supporting rigidity, strictly controlling foundation pit deformation, saving construction cost by using the main structure as a support, and the like, and is widely applied to foundation pit engineering of urban central areas with sensitive environment and high protection requirements. The reverse construction method can be divided into full reverse construction and half reverse construction according to the construction characteristics. The full reverse construction method is used for construction, namely, the upper structure is synchronously constructed during the construction of the underground structure, the synchronous construction of the upper structure to more than ten floors can be realized when the underground structure of the high-rise building is finished, but the upper structure can only be synchronously constructed to the height of three to four floors under the influence of the limitation of the vertical bearing capacity and the horizontal bearing capacity of the supporting structure, the technical advantages of the full reverse construction method process are greatly limited, and the efficiency of engineering construction is restrained.
In the full reverse construction method foundation pit engineering, a pile column structure provides vertical bearing capacity, and a vertical supporting system adopts a form that a steel upright column is inserted in an upright column pile. As the upright post pile of the final stress point, the single pile needs to bear the self weight of the structure and the construction load. When the basement is deep (3 floors and above) and the upper floors are high, the single pile cannot bear the maximum vertical load in the range of the column network, and the difference is great. Meanwhile, when the full reverse construction method is adopted for construction, the working radius of the large-sized excavating machine is generally more than 10 meters, and when the local building is of a reinforced concrete structure, the construction space required by indoor earthwork excavation cannot be provided, and the earthwork construction is often carried out by means of an outdoor excavation port or a small-sized excavating machine is used indoors instead, so that the earthwork construction efficiency is reduced, and the whole project period is prolonged. Therefore, when the construction engineering adopts the full reverse construction method, how to make the pile structure meet the requirement of the vertical bearing capacity, ensure the smooth proceeding of the earth excavation and improve the overall construction speed of the building becomes a problem to be solved urgently at present.
Disclosure of Invention
The invention aims to provide a multi-pile support column structure adopting a full reverse construction method of an upper steel structure and a construction method.
In order to solve the above problems, the present invention provides a multi-pile support column structure of an upper steel structure full reverse construction method, comprising:
the upright post pile is arranged in a soil layer at the lower part of the basement to be constructed;
the temporary steel upright is placed in a soil layer of the basement to be constructed, wherein the lower end of the temporary steel upright is inserted into the upper end of the upright pile;
the lower part of the concrete bearing platform is connected with the top end of the temporary steel upright post;
a BO floor slab is connected between two adjacent concrete bearing platforms, and a soil taking opening dug in a soil layer of the basement is reserved on the BO floor slab;
the first steel column is arranged on the concrete bearing platform far away from the soil taking port;
the first layer of steel beams, the second layer of steel beams and the steel beams of the above layers are sequentially and vertically connected with the first steel column from bottom to top, wherein the first layer of steel beams are positioned at the upper part of the BO layer floor slab;
the temporary steel truss is vertically connected between two adjacent first steel columns around the soil sampling port;
the second steel column is arranged at the upper part of the temporary steel truss, the bottom of the second steel column is vertically connected with the steel beam on the second layer, and the steel beams on the layers above the steel beam on the second layer at the upper part of the temporary steel truss are vertically connected with the second steel column;
the basement bottom plate is vertically connected to the top end of the upright post pile;
the concrete is characterized in that each floor of the basement is vertically connected to the temporary steel stand columns, each floor of the basement is located between the BO floor and the bottom plate of the basement, and soil taking ports are correspondingly arranged at positions, corresponding to the soil taking ports of the BO floor, on each floor of the basement.
According to another aspect of the present invention, there is also provided a method for constructing a multi-pile socle structure by a full reverse construction of an upper steel structure, comprising:
step S1, after measurement and setting-out and pile hole positioning, firstly, using a drilling machine to construct and form a hole and clear the hole in a soil layer at the lower part of the basement to be constructed, and after the pile hole is successfully checked and accepted, arranging a reinforcement cage in the hole and pouring concrete into the hole to form a vertical column pile;
step S2, a temporary steel upright is lowered by adopting a crawler crane, and the lower end of the temporary steel upright is inserted into the upper end of the upright pile;
step S3, pouring a concrete bearing platform, and fixedly embedding the top end of the temporary steel upright post in the poured concrete bearing platform;
step S4, binding reinforcing steel bars of a BO layer floor slab between two adjacent concrete bearing platforms, pouring concrete to form the BO layer floor slab, and reserving a soil taking port excavated in a soil layer of the basement on the BO layer floor slab; excavating earthwork below the BO floor slab from the soil taking opening through an excavating machine arranged on the BO floor slab; connecting a first steel column on the concrete bearing platform far away from the soil taking port;
step S5, continuing to dig earthwork below the BO floor from top to bottom through a soil-digging machine arranged on the BO floor from a soil-fetching port on the BO floor and constructing a basement structure until a basement bottom plate is completed, and reserving insertion bars at the positions of vertical permanent structural columns to be formed on the basement, wherein each floor of the basement is vertically connected with a temporary steel upright post, the basement bottom plate is vertically connected with the top end of the upright post, and pouring holes for pouring concrete are reserved on each floor of the basement around the vertical permanent structural columns to be formed on the basement; when an upper steel structure is constructed synchronously, firstly, a temporary steel truss is erected between first steel columns around a reserved operation space to serve as a temporary support, a first layer of steel beams is vertically connected with the first steel columns on the upper portion of a BO layer floor slab, a second steel column is connected to the first layer of steel beams on the upper portion of the temporary steel truss, second layers of steel beams and steel beams on the layers above are sequentially and vertically connected with the first steel columns from bottom to top, and the second steel columns are vertically connected with the steel beams on the layers above of the second layer of steel beams on the upper portion of the temporary steel truss;
step S6, pouring vertical permanent structural columns from bottom to top through the reserved pouring holes of each floor slab of the basement, and fixedly connecting the vertical permanent structural columns with each floor slab of the basement and the first steel column at the upper part of the basement respectively through the reserved dowel bars;
and S7, cutting and removing the temporary steel upright column, removing the temporary steel truss, arranging a third steel column on the concrete bearing platform close to the soil taking port, and respectively connecting the post-construction steel beam with the third steel column and the first steel column.
Further, in the above method, in step S2, after the temporary steel stud is lowered by using the crawler crane and the lower end of the temporary steel stud is inserted into the upper end of the stud pile, the method further includes:
and controlling the verticality by using a theodolite, and controlling the elevation of the temporary steel upright post by using a level and fixing.
Further, in the above method, in step S2, after the temporary steel stud is lowered by using the crawler crane and the lower end of the temporary steel stud is inserted into the upper end of the stud pile, the method further includes:
and after the temporary steel upright post is inserted, backfilling and capping the pile holes around the temporary steel upright post lower than the natural ground height.
Further, in the above method, in step S3, the elevation of the floor surface of the concrete platform is controlled to the position of the BO floor.
Further, in the above method, step S7, cutting and removing the temporary steel upright includes:
and cutting and detaching the temporary steel upright from top to bottom.
Further, in the above method, in step S7, the dismantling the temporary steel truss includes:
and after the construction of the basement structure is completed, dismantling the temporary steel truss.
Further, in the above method, in step S7, the third steel column and the post-construction steel beam are disposed between the BO floor slab and the first-floor steel beam.
Further, in the above method, step S5 further includes:
and soil taking ports are correspondingly arranged at the positions of the floors of the basement layer corresponding to the soil taking ports of the floors of the BO layer.
Further, in the above method, after the step S7, cutting and removing the temporary steel upright, the method further includes:
after the temporary steel upright columns are cleaned, pouring holes and soil taking ports reserved on each floor of the basement are sealed by concrete, and post-repair structure construction is carried out.
Compared with the prior art, the overground part adopts a steel structure form, the problems of limited operation space and low earthwork construction efficiency of the excavating machinery are solved, and the construction efficiency and the construction quality are improved.
The upper portion steel construction is faster than the underground structure construction in this application, and the superstructure system construction such as electromechanics, pipeline does not occupy extra time limit for a project, can improve the efficiency of construction by a wide margin.
The invention effectively solves the problems that the single pile can not bear the maximum vertical load when the upper floor is higher in the full reverse construction method of the upper steel structure, the operation space of the earth-moving machinery is limited and the earthwork construction efficiency is low, reduces the disturbance to the surrounding environment, improves the integral construction speed of the building and meets the requirement of green construction.
Drawings
FIG. 1 is a schematic structural view of a completed first construction step according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a second construction step according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a construction process step III according to an embodiment of the present invention;
FIG. 4 is a structural schematic diagram of the construction process of the fourth embodiment of the present invention;
FIG. 5 is a schematic structural diagram of the construction process of the present invention after completion of the fifth construction step;
FIG. 6 is a schematic structural diagram illustrating a sixth implementation of the present invention;
fig. 7 is a schematic structural diagram after completion of the seventh construction step according to the embodiment of the present invention.
In the figure: 1-a vertical column pile; 2-temporary steel upright posts; 3-concrete bearing platform; 4-BO floor slab; 5, reserving a dowel bar; 6-vertical permanent structural columns; 7-a first steel column; 81-a first layer of steel beams; 82-a second layer of steel beams; 83-post construction of steel beams; 9-temporary steel truss; 10-a shovel; 11-a second steel column; 13-basement floor; 14-soil sampling port; 15-a working space; 16-a third steel column; 17-each floor of the basement.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 to 7, the present invention provides a multi-pile support column structure of an upper steel structure full reverse construction method, including:
as shown in fig. 1, a post pile 1 disposed in a soil layer of a lower portion of a basement to be constructed;
as shown in fig. 2, a temporary steel upright 2 disposed in the soil layer of the basement to be constructed, wherein the lower end of the temporary steel upright 2 is inserted into the upper end of the upright pile 1;
as shown in fig. 3, a concrete bearing platform 3, wherein the lower part of the concrete bearing platform 3 is connected with the top end of the temporary steel upright post 2;
as shown in fig. 4, a BO floor slab 4 is connected between two adjacent concrete bearing platforms 3, and a soil taking opening 14 dug in a soil layer of a basement is reserved on the BO floor slab 4;
as shown in fig. 4, a first steel column 7, wherein the first steel column 7 is arranged on the concrete cap 3 far away from the soil taking port;
here, the first steel column 7 is a steel column extending from the BO floor up to the steel beams 8 of the second, third and above floors; a first steel column 7 is not arranged on the concrete bearing platform 3 close to the soil taking port, so that an operation space 15 for indoor construction of the excavator 10 is reserved on a BO floor;
as shown in fig. 4, the first steel beam 81, the second steel beam 82 and the steel beams of the above layers are sequentially and vertically connected to the first steel column 7 from bottom to top, wherein the first steel beam 81 is located at the upper part of the BO floor;
the temporary steel truss 9 is vertically connected between two adjacent first steel columns 7 around the soil taking port 14;
when the upper steel structure is constructed synchronously, firstly, a temporary steel truss 9 is erected between the steel columns 7 in the reserved space to serve as a temporary support, and a second steel column 11 and a steel beam 8 are sequentially hoisted on the upper portion of the temporary steel truss to ensure that the upper steel structure can be constructed continuously while the construction space of the excavator 10 is ensured;
as shown in fig. 4, the second steel column 11 is arranged at the upper part of the temporary steel truss 9, the bottom of the second steel column 11 is vertically connected with the second layer of steel beam 82, and the steel beams of the above layers of the second layer of steel beam 82 at the upper part of the temporary steel truss 9 are vertically connected with the second steel column 11;
here, the second steel column 11 is a steel column extending through the second-level steel beam 82 and the third-level or higher steel beams, but the second steel column 11 is broken from the BO-level floor 4 up to the second-level steel column, and the second steel column 11 is not provided temporarily, so that the working space 15 for indoor construction of the excavator 10 is opened at a position where the second steel column 11 is not provided;
a basement bottom plate 13 vertically connected to the top end of the upright post 1;
and each floor 17 of the basement is vertically connected to the temporary steel upright post 2, and each floor 17 of the basement is positioned between the BO floor 4 and the bottom plate 13 of the basement.
And soil taking ports are correspondingly arranged at the positions of the floors of the basement layers corresponding to the soil taking ports of the floors of the BO layers.
The invention provides a multi-pile support column structure of an upper steel structure full reverse construction method, aiming at the defects in the prior art, and solving the problems that a single pile cannot bear the self weight and the construction load when the upper floor is higher in the upper steel structure full reverse construction method, the operation space of an excavating machine is limited, and the earthwork construction efficiency is low.
As shown in fig. 1 to 7, the present invention also provides another construction method of a multi-pile support column structure by a full reverse construction method of an upper steel structure, including:
step S1, as shown in fig. 1, constructing a stud pile 1: after measurement and setting-out and pile hole positioning, firstly, in a soil layer at the lower part of a basement to be constructed, a drilling machine is used for constructing and forming holes and cleaning the holes, and after the pile holes are successfully checked, a reinforcement cage is arranged in the holes and concrete is poured to form a vertical column pile 1;
step S2, as shown in FIG. 2, a crawler crane is adopted to lower the temporary steel upright 2, the lower end of the temporary steel upright 2 is inserted into the upper end of the upright pile 1, the verticality is controlled by a theodolite, and the elevation of the temporary steel upright 2 is controlled by a level and fixed;
preferably, after the temporary steel upright post 2 is inserted, pile holes around the temporary steel upright post 2 lower than the natural ground height are backfilled and capped immediately; the backfill material adopts the same kind of soil on site, and the upper part of the backfill material is sealed by concrete;
step S3, as shown in fig. 3, pouring a concrete bearing platform 3, and embedding the top end of the temporary steel upright 2 in the poured concrete bearing platform 3;
preferably, the elevation of the bearing surface of the concrete bearing platform 3 is controlled at the position of the BO floor slab 4 of +/-0.00, and the concrete bearing platform 3 bears various allowable loads of the superstructure through force conversion;
step S4, as shown in fig. 4, binding reinforcing steel bars of a BO floor 4 between two adjacent concrete bearing platforms 3 and pouring concrete to form the BO floor 4, leaving an earth taking opening 14 for excavating a soil layer of a basement on the BO floor 4, and excavating earthwork below the BO floor 4 through an earth excavating machine 10 provided on the BO floor 4 from the earth taking opening 14; synchronously carrying out hoisting construction of an upper steel structure: a first steel column 7 is connected to the concrete bearing platform 3 far away from the soil taking port;
preferably, when the first steel column 7 is installed, the installation construction of the second span can be carried out from one end of the building to the front in parallel, after a span column is installed and fixed in place, the installation construction of all the first steel columns is completed, then the installation of the steel beams 8 is carried out by taking the span as a unit, and the installation is carried out from one end of the building one by one; when a steel structure at the upper part of a BO floor slab 4 is constructed, a first steel column 7 is not arranged on the concrete bearing platform 3 close to the soil taking port, so that an indoor construction working space of the excavator 10 is reserved on the BO floor slab;
here, the steel columns 7 and the steel beams 8 are not installed to leave a large space, and a working space is provided for indoor construction of the excavator 10;
step S5, as shown in fig. 5, continuing to dig earth below the BO floor 4 from top to bottom through the earth-moving machine 10 disposed on the BO floor 4 from the earth-moving opening 14 on the BO floor 4 and constructing the basement structure until the completion of the basement floor 13, reserving the dowel bars 5 at the positions of the vertical permanent structural columns 6 to be formed in the basement, vertically connecting the floors of each floor of the basement to the temporary steel columns 2, correspondingly disposing the earth-moving openings at the positions of the floors of each floor of the basement corresponding to the earth-moving opening 14 of the BO floor 4, vertically connecting the basement floor 13 to the top ends of the vertical column piles 1, and reserving pouring holes for pouring concrete on each floor of the basement around the vertical permanent structural columns 6 to be formed in the basement; when an upper steel structure is constructed synchronously, firstly, a temporary steel truss 9 is erected between first steel columns 7 around a reserved operation space 15 to serve as a temporary support, a first layer of steel beams 81 and the first steel columns 7 are vertically connected to the upper portion of a BO floor 4, second steel columns 11 are connected to the first layer of steel beams 81 on the upper portion of the temporary steel truss 9, second layers of steel beams 82 and the steel beams on the layers above are sequentially and vertically connected with the first steel columns 7 from bottom to top, and the second layers of steel beams 82 on the second layer of steel beams on the upper portion of the temporary steel truss 9 are vertically connected with the second steel columns 11, so that the upper steel structure can be constructed continuously while the construction space of the excavating machine 10 is ensured;
step S6, as shown in fig. 6, pouring the vertical permanent structural column 6 from bottom to top through the pouring hole reserved in each floor of the basement, and fixedly connecting the vertical permanent structural column 6 with each floor 17 of the basement and the first steel column 7 at the upper part through the reserved dowel 5;
here, the hoisting construction of the upper steel structure can be continued until substantially all is completed.
Step S7, as shown in fig. 7, cutting and removing the temporary steel upright 2 from top to bottom; as shown in fig. 7, after the construction of the basement structure is completed, the temporary steel truss 9 is removed, a third steel column 16 is arranged on the concrete bearing platform 3 close to the soil taking port, and a post-construction steel beam 83 is connected with the third steel column 16 and the first steel column 7 respectively;
here, the third steel column 16 and the rear construction steel beam 83 are disposed between the BO floor slab 4 and the first floor steel beam 81.
Preferably, after the temporary steel upright posts 2 are cleaned, the pouring holes and the soil taking ports reserved in each floor of the basement are sealed by concrete, and post-repair structure construction is carried out;
here, after the construction of the entire basement structure is completed, the temporary steel truss 9 of the upper steel structure is dismantled, and the constructed steel columns and steel beams are hoisted, that is, the post-construction steel beams 83 are respectively connected with the third steel columns 16 and the first steel columns 7.
The overground part adopts a steel structure form, the problems that the operation space of the excavating machinery is limited and the earthwork construction efficiency is low are solved, and the construction efficiency and the construction quality are improved.
The upper portion steel construction is faster than the underground structure construction in this application, and the superstructure system construction such as electromechanics, pipeline does not occupy extra time limit for a project, can improve the efficiency of construction by a wide margin.
The invention effectively solves the problems that the single pile can not bear the maximum vertical load when the upper floor is higher in the full reverse construction method of the upper steel structure, the operation space of the earth-moving machinery is limited and the earthwork construction efficiency is low, reduces the disturbance to the surrounding environment, improves the integral construction speed of the building and meets the requirement of green construction.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
It will be apparent to those skilled in the art that various changes and modifications may be made in the invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The utility model provides a many piles of full reverse construction method of upper portion steel construction hold in palm post structure which characterized in that includes:
the upright post pile is arranged in a soil layer at the lower part of the basement to be constructed;
the temporary steel upright is arranged in a soil layer of the basement to be constructed, wherein the lower end of the temporary steel upright is inserted into the upper end of the upright pile;
the lower part of the concrete bearing platform is connected with the top end of the temporary steel upright post;
a BO floor slab is connected between two adjacent concrete bearing platforms, and a soil taking opening dug in a soil layer of the basement is reserved on the BO floor slab;
the first steel column is arranged on the concrete bearing platform far away from the soil taking port;
the first layer of steel beams, the second layer of steel beams and the steel beams of the above layers are sequentially and vertically connected with the first steel column from bottom to top, wherein the first layer of steel beams are positioned at the upper part of the BO layer floor slab;
the temporary steel truss is vertically connected between two adjacent first steel columns around the soil sampling port;
the second steel column is arranged at the upper part of the temporary steel truss, the bottom of the second steel column is vertically connected with the steel beam on the second layer, and the steel beams on the layers above the steel beam on the second layer at the upper part of the temporary steel truss are vertically connected with the second steel column;
the basement bottom plate is vertically connected to the top end of the upright post pile;
the concrete is characterized in that each floor of the basement is vertically connected to the temporary steel stand columns, each floor of the basement is located between the BO floor and the bottom plate of the basement, and soil taking ports are correspondingly arranged at positions, corresponding to the soil taking ports of the BO floor, on each floor of the basement.
2. A construction method of a multi-pile support column structure of an upper steel structure full reverse construction method is characterized by comprising the following steps:
step S1, after measurement and setting-out and pile hole positioning, firstly, using a drilling machine to construct and form a hole and clear the hole in a soil layer at the lower part of the basement to be constructed, and after the pile hole is successfully checked and accepted, arranging a reinforcement cage in the hole and pouring concrete into the hole to form a vertical column pile;
step S2, a temporary steel upright is lowered by adopting a crawler crane, and the lower end of the temporary steel upright is inserted into the upper end of the upright pile;
step S3, pouring a concrete bearing platform, and fixedly embedding the top end of the temporary steel upright post in the poured concrete bearing platform;
step S4, binding reinforcing steel bars of a BO layer floor slab between two adjacent concrete bearing platforms, pouring concrete to form the BO layer floor slab, and reserving a soil taking port excavated in a soil layer of the basement on the BO layer floor slab; excavating earthwork below the BO floor slab from the soil taking opening through an excavating machine arranged on the BO floor slab; connecting a first steel column on the concrete bearing platform far away from the soil taking port;
step S5, continuing to dig earthwork below the BO floor from top to bottom through a soil-digging machine arranged on the BO floor from a soil-fetching port on the BO floor and constructing a basement structure until a basement bottom plate is completed, and reserving insertion bars at the positions of vertical permanent structural columns to be formed on the basement, wherein each floor of the basement is vertically connected with a temporary steel upright post, the basement bottom plate is vertically connected with the top end of the upright post, and pouring holes for pouring concrete are reserved on each floor of the basement around the vertical permanent structural columns to be formed on the basement; when an upper steel structure is constructed synchronously, firstly, a temporary steel truss is erected between first steel columns around a reserved operation space to serve as a temporary support, a first layer of steel beams is vertically connected with the first steel columns on the upper portion of a BO layer floor slab, a second steel column is connected to the first layer of steel beams on the upper portion of the temporary steel truss, second layers of steel beams and steel beams on the layers above are sequentially and vertically connected with the first steel columns from bottom to top, and the second steel columns are vertically connected with the steel beams on the layers above of the second layer of steel beams on the upper portion of the temporary steel truss;
step S6, pouring vertical permanent structural columns from bottom to top through the reserved pouring holes of each floor slab of the basement, and fixedly connecting the vertical permanent structural columns with each floor slab of the basement and the first steel column at the upper part of the basement respectively through the reserved dowel bars;
and S7, cutting and removing the temporary steel upright column, removing the temporary steel truss, arranging a third steel column on the concrete bearing platform close to the soil taking port, and respectively connecting the post-construction steel beam with the third steel column and the first steel column.
3. The method of constructing a multi-stake socle structure by the upper steel structure full reverse construction method according to claim 2, wherein the step S2 is to lower the temporary steel post by a crawler crane, and after inserting the lower end of the temporary steel post into the upper end of the post pile, further comprising:
and controlling the verticality by using a theodolite, and controlling the elevation of the temporary steel upright post by using a level and fixing.
4. The method of constructing a multi-stake socle structure by the upper steel structure full reverse construction method according to claim 2, wherein the step S2 is to lower the temporary steel post by a crawler crane, and after inserting the lower end of the temporary steel post into the upper end of the post pile, further comprising:
and after the temporary steel upright post is inserted, backfilling and capping the pile holes around the temporary steel upright post lower than the natural ground height.
5. The method of constructing a multi-stake joist structure by full reverse construction of an upper steel structure as claimed in claim 2, wherein in step S3, the elevation of the support surface of the concrete support platform is controlled to the position of the BO floor.
6. The method for constructing a multi-pile joist structure by full reverse construction of an upper steel structure as claimed in claim 2, wherein the step S7 of cutting and removing the temporary steel columns comprises:
and cutting and detaching the temporary steel upright from top to bottom.
7. The method of constructing a multi-stake socle structure of an upper steel structure by a full reverse construction method according to claim 2, wherein the step of removing the temporary steel truss at step S7 comprises:
and after the construction of the basement structure is completed, dismantling the temporary steel truss.
8. The method of constructing a multi-stake joist structure using a full reverse upper structure as claimed in claim 2, wherein the third steel columns and the post-construction steel beams are disposed between the BO floor and the first layer steel beams in step S7.
9. The method of constructing a multi-stake socle structure of an upper steel structure by a full reverse construction method according to claim 2, wherein the step S5 further comprises:
and soil taking ports are correspondingly arranged at the positions of the floors of the basement layer corresponding to the soil taking ports of the floors of the BO layer.
10. The method for constructing a multi-stake joist structure with a full reverse construction of an upper steel structure as claimed in claim 9, wherein the step S7, after the temporary steel posts are cut and removed, further comprises:
after the temporary steel upright columns are cleaned, pouring holes and soil taking ports reserved on each floor of the basement are sealed by concrete, and post-repair structure construction is carried out.
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| CN117144977A (en) * | 2023-10-26 | 2023-12-01 | 上海建工集团股份有限公司 | Method for constructing residential building basement by reverse construction method column drawing |
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