CN115095186B - Steel structure supporting system for joist column pulling and construction method - Google Patents

Steel structure supporting system for joist column pulling and construction method Download PDF

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Publication number
CN115095186B
CN115095186B CN202210820865.7A CN202210820865A CN115095186B CN 115095186 B CN115095186 B CN 115095186B CN 202210820865 A CN202210820865 A CN 202210820865A CN 115095186 B CN115095186 B CN 115095186B
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steel
reinforced concrete
joist
columns
steel pipe
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CN202210820865.7A
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CN115095186A (en
Inventor
李�瑞
徐殿祥
苑文会
张利
李营欣
袁春娟
徐汇宾
邓刚
石跃
马云飞
杨化军
王杨
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Beijing Fourth Construction & Engineering Co ltd
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Beijing Fourth Construction & Engineering Co ltd
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00—Shores or struts; Chocks
    • E04G25/02—Shores or struts; Chocks non-telescopic
    • 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
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/66—Sealings
    • E04B1/68—Sealings of joints, e.g. expansion joints
    • E04B1/6801—Fillings therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/30—Columns; Pillars; Struts
    • E04C3/32—Columns; Pillars; Struts of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

A steel structure supporting system for joist pulling and column pulling and a construction method relate to the field of building construction and comprise I-shaped steel columns arranged between an upper layer reinforced concrete floor slab and a lower layer reinforced concrete floor slab, wherein the I-shaped steel columns are arranged between reinforced concrete structure columns to be disassembled at intervals, and the I-shaped steel columns are arranged in pairs and positioned on two sides of a reinforced concrete structure beam; a steel pipe is welded between the tops of the pair of I-steel upright posts, and the middle part of the steel pipe is transversely connected in the reinforced concrete structural beam in a penetrating way; the top surface of the I-steel upright post is embedded in the steel plate cushion block, the steel plate cushion block is tightly propped against the reinforced concrete floor slab positioned on the upper layer, the bottom surface of the I-steel upright post is welded on the surface of the rear embedded plate, and the rear embedded plate is connected onto the reinforced concrete floor slab positioned on the lower layer through the expansion bolt. The invention solves the technical problems of the traditional joist column pulling method that the full-hall support is required to be erected, the subsequent reinforcement is required to be changed by secondary disassembly, the whole investment is large, the construction period is long and the cost is high.

Description

Steel structure supporting system for joist column pulling and construction method
Technical Field
The invention relates to the field of building construction, in particular to a steel structure supporting system for joist column pulling and a construction method thereof.
Background
The joist column pulling is a common means for changing the pattern in the modern existing transformation, the frame column is removed under the condition of not removing the structural beam plates, the space is not occupied basically in the subsequent reinforcement transformation, and the templates and the supporting systems with the beam enlarged cross sections can be independently erected in the subsequent reinforcement transformation. The traditional method is to set up a full-built scaffold to support the beam slab, but the full-built scaffold occupies a large amount of working surface, so that the continuous beam and structure reinforcement work after the reinforced concrete column is dismantled is greatly influenced, and the whole reinforcement reconstruction construction investment is large, the construction period is long and the cost is high.
Disclosure of Invention
The invention aims to provide a steel structure supporting system for joist column pulling and a construction method, which solve the technical problems that a full-hall support is required to be erected in the traditional joist column pulling method, secondary disassembly and modification are required for subsequent reinforcement, the integral investment is large, the construction period is long and the cost is high.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the steel structure supporting system for the joist column pulling comprises I-shaped steel columns arranged between an upper reinforced concrete floor slab and a lower reinforced concrete floor slab, wherein the I-shaped steel columns are arranged between reinforced concrete structure columns to be disassembled at intervals, and the I-shaped steel columns are arranged in pairs and positioned on two sides of the reinforced concrete structure beam; a steel pipe is welded between the tops of the pair of I-steel upright posts, and the middle part of the steel pipe is transversely connected in the reinforced concrete structural beam in a penetrating way; the top surface of the I-steel upright post is embedded in the steel plate cushion block, the steel plate cushion block is tightly propped against the reinforced concrete floor slab positioned on the upper layer, the bottom surface of the I-steel upright post is welded on the surface of the rear embedded plate, and the rear embedded plate is connected onto the reinforced concrete floor slab positioned on the lower layer through the expansion bolt.
Further preferred technical scheme: the expansion bolts are planted in the reinforced concrete floor slab positioned at the lower layer, and the expansion bolts are arranged at four corners of the rear embedded plate.
Further preferred technical scheme: a round hole is milled in the middle of the reinforced concrete structural beam; the steel pipe transversely penetrates through the circular hole.
Further preferred technical scheme: and plugging materials are filled in the gaps between the round holes and the steel pipes.
Further preferred technical scheme: the plugging material is non-shrinkage grouting material or grouting steel glue.
Further preferred technical scheme: the middle steel materials are Q345 type steel materials.
The construction method of the steel structure supporting system for the joist column pulling comprises the following steps:
step one, determining the position of a rear buried plate according to a point diagram, and fixing the rear buried plate through expansion bolts.
And secondly, drilling and milling holes on the reinforced concrete structural beam according to the plot.
And thirdly, firstly installing an I-shaped steel column on one side, crossing the steel pipe and welding the steel pipe, and then installing an I-shaped steel column on the other side and welding the steel pipe.
And fourthly, filling and compacting gaps crossing the positions of the steel pipes and the reinforced concrete structural beams by adopting non-shrinkage grouting materials or grouting steel adhesives.
Compared with the prior art, the invention has the following characteristics and beneficial effects:
according to the invention, the I-shaped steel upright post supporting system is adopted, so that the distance between upright posts is greatly increased, the distance between upright posts of the traditional full-framing scaffold is 800-1000mm, the system can be expanded to 2000-2500mm, a large amount of construction space is created for a lower area, and after the reinforced concrete column is removed, structural reinforcement and other works can be performed without removing and changing the supporting system.
The steel pipe traverses the reinforced concrete beam, and can completely support the load of the beam slab under the condition of not damaging the steel bars and the stress of the steel bars in the original beam; the work of the later beam such as section increase, lengthening and the like can be directly carried out, and after the whole structure transformation is finished, the steel pipe is cut off along the two sides of the reinforced concrete beam.
In summary, the invention has the characteristics of simplicity, recoverability, strong operability, one-time molding of the supporting system, elimination of secondary disassembly and modification, less occupation of the supporting area, relatively wide whole application range, safety, applicability and the like, has good popularization and practical values, and can generate good economic benefit after wide popularization and application.
Drawings
FIG. 1 is a schematic plan view of a steel structural support system for joist pullout columns of the present invention.
FIG. 2 is a schematic cross-sectional view of a steel structural support system for joist pullout columns of the present invention.
Reference numerals: 1-a reinforced concrete structural column to be disassembled; 2-a reinforced concrete structural beam; 3-a steel pipe; 4-I-steel upright posts; 5-a steel plate cushion block; 6-reinforced concrete floor slab; 7-expansion bolts; 8-post buried plate.
Detailed Description
The present invention will be further described below in order to make the technical means, innovative features, achieved objects and effects achieved by the present invention easy to understand.
The examples described herein are specific embodiments of the present invention, which are intended to illustrate the inventive concept, are intended to be illustrative and exemplary, and should not be construed as limiting the invention to the embodiments and scope of the invention. In addition to the embodiments described herein, those skilled in the art can adopt other obvious solutions based on the disclosure of the claims and specification of the present application, including those adopting any obvious substitutions and modifications to the embodiments described herein.
Referring to fig. 1 and 2, the steel structure supporting system for joist column pulling and the construction method of the invention comprise I-steel columns (4) arranged between an upper reinforced concrete floor slab (6) and a lower reinforced concrete floor slab, the I-steel columns (4) are arranged between reinforced concrete structural columns (1) to be disassembled at intervals, and the I-steel columns (4) are arranged in pairs and positioned at two sides of the reinforced concrete structural beam (2); a steel pipe (3) is welded between the tops of the pair of I-steel upright posts (4), and the middle part of the steel pipe (3) is transversely connected in the reinforced concrete structural beam (2) in a penetrating way; the top surface of I-steel stand (4) is embedded in steel sheet cushion (5), steel sheet cushion (5) is tight with reinforced concrete floor (6) top that are located the upper strata, the bottom surface welding of I-steel stand (4) is on rearmounted buried plate (8) surface, rearmounted buried plate (8) are connected on reinforced concrete floor (6) that are located the lower floor through expansion bolts (7), expansion bolts (7) are planted in reinforced concrete floor (6) that are located the lower floor, expansion bolts (7) set up in the four corners portion of rearmounted buried plate (8).
The middle part of the reinforced concrete structure beam (2) is milled with a round hole with the diameter of 100mm, a steel pipe (3) transversely passes through the reinforced concrete structure beam (2) and is welded on the pair of I-steel columns (4) on two sides, and a gap after the steel pipe (3) passes through the reinforced concrete structure beam (2) is filled with non-shrinkage grouting material or grouting steel glue, so that the steel pipe (3) and the reinforced concrete structure beam (2) are tightly combined.
Before the reinforced concrete structure beam (2) mills the hole in the middle of the beam, the original structure diagram is required to be read, or the stress steel bar position of the reinforced concrete structure beam (2) is determined by means of a steel bar detector, the hole milling is forbidden to destroy the structure stress steel bar, and the hole milling position is required to be approved by a structural designer.
The blanking of the I-steel upright post (4) is accurate, the actual elevation of each layer is not necessarily completely consistent, and constructors are required to perform blanking according to the actual clearance elevation of each layer.
All the steel materials are Q345 type steel materials; the steel model specification and arrangement are not fixed, and are set according to the respective characteristics of the project and are checked by the structural bearing capacity.
In the above description, the specifications of each component are as follows: the specification of the reinforced concrete structural column (1) to be disassembled is 200 x 10mm; the specification of the reinforced concrete structural beam (2) is 300 x 600; the specification of the steel pipe (3) is phi 100mm; the specification of the steel plate cushion block (5) is 400 x 10mm; the diameter of the expansion bolt (7) is 12-16mm; the specification of the rear buried plate (8) is 400×400×10.
After the reinforced concrete structural column is disassembled, the load of the reinforced concrete structural beam and the reinforced concrete floor slab is borne by the steel structure supporting system.
The steel structure supporting system for the joist column drawing is high in strength, convenient to weld on site according to the on-site cutting size and high in construction speed.
The invention discloses a construction method of a steel structure supporting system for joist column pulling, which comprises the following steps:
step one, determining the position of a rear buried plate (8) according to a point diagram, and fixing the rear buried plate through expansion bolts (7).
And secondly, drilling and milling holes on the reinforced concrete structural beam (2) by adopting a water drill according to the distribution diagram.
And thirdly, firstly installing an I-steel upright post (4) on one side, and then installing an I-steel upright post on the other side and welding after crossing the steel pipe (3) and welding the steel pipe.
And fourthly, filling and compacting gaps crossing the positions of the steel pipes and the reinforced concrete structural beams by adopting non-shrinkage grouting materials or grouting steel adhesives.
While the fundamental and principal features of the invention and advantages of the invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (6)

1. A steel construction braced system for joist pulls out post, its characterized in that: the steel reinforced concrete beam comprises I-shaped steel columns (4) arranged between an upper reinforced concrete floor slab (6) and a lower reinforced concrete floor slab, wherein the I-shaped steel columns (4) are arranged between reinforced concrete structural columns (1) to be disassembled at intervals, and the I-shaped steel columns (4) are arranged in pairs and are positioned on two sides of a reinforced concrete structural beam (2); a steel pipe (3) is welded between the tops of the pair of I-steel upright posts (4), and the middle part of the steel pipe (3) is transversely connected in the reinforced concrete structural beam (2) in a penetrating way; the top surface of I-steel stand (4) is embedded in steel sheet cushion (5), and steel sheet cushion (5) are tightly supported with reinforced concrete floor (6) that are located the upper strata, and the bottom surface welding of I-steel stand (4) is on rearmounted buried plate (8) surface, and rearmounted buried plate (8) are connected on reinforced concrete floor (6) that are located the lower floor through expansion bolts (7).
2. The steel structural support system for joist extraction as claimed in claim 1 wherein: expansion bolts (7) are planted in the reinforced concrete floor slab (6) positioned at the lower layer, and the expansion bolts (7) are arranged at four corners of the rear embedded plate (8).
3. The steel structural support system for joist extraction as claimed in claim 1 wherein: a round hole is milled in the middle of the reinforced concrete structural beam (2); the steel pipe (3) is transversely connected in the circular hole in a penetrating way.
4. A steel structural support system for joist extraction as claimed in claim 3 wherein: the gap between the round hole and the steel pipe (3) is filled with plugging material.
5. The steel structural support system for joist extraction as claimed in claim 4 wherein: the plugging material is non-shrinkage grouting material or grouting steel glue.
6. The construction method of the steel structure supporting system for joist extraction as claimed in any one of claims 1 to 5, which is characterized by comprising the following steps:
step one, determining the position of a rear buried plate (8) according to a point diagram, and fixing the rear buried plate through expansion bolts (7);
secondly, drilling and milling holes on the reinforced concrete structural beam (2) by adopting a water drill according to a point diagram;
step three, firstly installing an I-steel upright post (4) on one side, crossing the steel pipe (3) and welding the steel pipe, and then installing an I-steel upright post on the other side and welding the steel pipe;
and fourthly, filling and compacting gaps crossing the positions of the steel pipes and the reinforced concrete structural beams by adopting non-shrinkage grouting materials or grouting steel adhesives.
CN202210820865.7A 2022-07-13 2022-07-13 Steel structure supporting system for joist column pulling and construction method Active CN115095186B (en)

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CN115095186B true CN115095186B (en) 2023-07-07

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06272262A (en) * 1993-03-19 1994-09-27 Toda Constr Co Ltd Construction method for building beam
CN109403654A (en) * 2018-11-05 2019-03-01 广东赛力克建筑技术工程有限公司 A kind of underpinning method of existing building structure
CN110130670A (en) * 2019-04-10 2019-08-16 太原理工大学 Corbel type temporary support system and its construction method above and below armored concrete
CN110259184A (en) * 2019-07-02 2019-09-20 浙江众安建设集团有限公司 Column construction method is pulled out based on Removing Columns combined support jack-up system
CN113389406A (en) * 2021-06-17 2021-09-14 北京东方悦工程技术有限公司 Joist column pulling construction method
CN214615591U (en) * 2020-12-30 2021-11-05 中国电建集团河南省电力勘测设计院有限公司 Reinforced concrete frame joist pulls out post and reforms transform reinforced structure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06272262A (en) * 1993-03-19 1994-09-27 Toda Constr Co Ltd Construction method for building beam
CN109403654A (en) * 2018-11-05 2019-03-01 广东赛力克建筑技术工程有限公司 A kind of underpinning method of existing building structure
CN110130670A (en) * 2019-04-10 2019-08-16 太原理工大学 Corbel type temporary support system and its construction method above and below armored concrete
CN110259184A (en) * 2019-07-02 2019-09-20 浙江众安建设集团有限公司 Column construction method is pulled out based on Removing Columns combined support jack-up system
CN214615591U (en) * 2020-12-30 2021-11-05 中国电建集团河南省电力勘测设计院有限公司 Reinforced concrete frame joist pulls out post and reforms transform reinforced structure
CN113389406A (en) * 2021-06-17 2021-09-14 北京东方悦工程技术有限公司 Joist column pulling construction method

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