CN-115613684-B - Construction method of high-position overhanging concrete structure

CN115613684BCN 115613684 BCN115613684 BCN 115613684BCN-115613684-B

Abstract

The application discloses a construction method of a high-position overhanging concrete structure, which comprises the steps of firstly anchoring a plurality of longitudinal steel beams on a floor slab, paving a steel wire mesh on the longitudinal steel beams, then carrying out guard rail construction, then anchoring two counter-pulling beams on a wall body, hoisting a plurality of transverse steel beams between the two counter-pulling beams, enabling each transverse steel beam to be positioned below the longitudinal steel beam and enabling each transverse steel beam to be abutted against the longitudinal steel beam, then forming inclined holes for the inclined supporting beams to pass through on the wall body of a lower floor, connecting the inclined supporting beams with the longitudinal steel beams after passing through the inclined holes, fixing the inclined supporting beams with the wall body, removing the steel wire mesh, paving a bottom template and a side template on the plurality of longitudinal steel beams, and then forming a binding overhanging concrete structure by reinforcing steel bars and pouring concrete. The construction of the cantilever structure can be completed without high-altitude suspension operation on the outer wall of the building, so that the construction efficiency is improved, and the construction safety is improved.

Inventors

WEN XILIAN
YE JIACHENG
HU JUNWEI
ZHANG JIANHUI
ZHONG KONGTIAN
LU YAOBO
PAN GUANGBIN
LIANG JIAYUN

Assignees

广州珠江建设发展有限公司
广州番禺职业技术学院

Dates

Publication Date: 20260505
Application Date: 20221008

Claims (8)

1. A construction method of a high-position overhanging concrete structure is characterized by comprising the following steps: S1, anchoring a plurality of longitudinal steel beams (2) on a floor slab (1); S2, paving steel wire meshes on a plurality of longitudinal steel beams (2); S3, constructing a protective fence (5) on the longitudinal steel beam (2); S4, anchoring a counter-pulling beam (7) on two side walls (6) of the longitudinal steel beams (2), wherein the counter-pulling beam (7) is positioned above the longitudinal steel beams (2) and is parallel to the longitudinal steel beams (2), and then hoisting a plurality of transverse steel beams (8) between the two counter-pulling beams (7), so that each transverse steel beam (8) is positioned below the longitudinal steel beams (2) and each transverse steel beam (8) spans across the plurality of longitudinal steel beams (2) and is abutted against the longitudinal steel beams (2); S5, constructing an inclined supporting beam (15), namely forming an inclined hole for the inclined supporting beam (15) to pass through on a wall body (6) of a lower floor, enabling the inclined supporting beam (15) to pass through the inclined hole until one end of the inclined supporting beam (15) is abutted against the longitudinal steel beam (2), and then fixing the inclined supporting beam (15) with the wall body (6); S6, dismantling the steel wire mesh, paving a bottom template and side templates on the longitudinal steel beams (2), binding steel bars in a die cavity defined by the side templates and the bottom plate, and pouring concrete to form an overhanging concrete structure.
2. The construction method of the high-position overhanging concrete structure of claim 1, wherein in the step S1, when the longitudinal steel beam (2) is anchored, a first through hole for the fixed beam (3) to pass through is formed on the floor slab (1), one end of the fixed beam (3) passes through the first through hole and is welded with the longitudinal steel beam (2), and then the fixed beam (3) is anchored on the lower surface of the floor slab (1).
3. The construction method of the high-position overhanging concrete structure of claim 1, wherein in the step S4, when the reverse pull beam (7) is constructed, a second through hole for the reverse pull beam (7) to pass through is formed in the wall body (6), then one end of the reverse pull beam (7) is welded with the reverse pull plate (9), then one end of the reverse pull beam (7) far away from the reverse pull plate (9) is penetrated from the room to the outside through the second through hole, the reverse pull beam (7) is moved until the reverse pull plate (9) is abutted against the wall body (6), and then the reverse pull plate (9) is anchored with the wall body (6).
4. The construction method of the high-position overhanging concrete structure of claim 2, characterized in that in the step S5, before the inclined holes are drilled on the wall body (6) of the lower floor, the wall body (6) is traced according to the position of the fixed beam (3), and then the drilling positions of the inclined holes are positioned by combining the lengths of the inclined supporting beams (15), so that the inclined supporting beams (15) can be connected with the corresponding longitudinal steel beams (2) after passing through the inclined holes.
5. The construction method of the high-position overhanging concrete structure of claim 4, wherein the diagonal bracing beam (15) comprises a fixed pipe (151), two end faces of the fixed pipe (151) are perpendicular to each other, a plurality of cutting bars (152) are arranged on the side wall of the fixed pipe (151), the cutting bars (152) are parallel to the end face, close to a wall body (6), of the fixed pipe (151), the cutting bars (152) are in sliding connection with the fixed pipe (151), and a control assembly (153) for controlling the cutting bars (152) to move is arranged in the fixed pipe (151).
6. The method of claim 5, wherein the control assembly (153) comprises a screw rod (1531) in threaded connection with the fixed pipe (151), one end of the screw rod (1531) extending into the fixed pipe (151) is rotatably connected with a movable rod (1532), a plurality of connecting rods (1533) are hinged to the peripheral wall of the movable rod (1532), the connecting rods (1533) are in one-to-one correspondence with the cutting (152), and one end of the connecting rod (1533) away from the movable rod (1532) is hinged to the cutting (152).
7. The method of construction of a high-level overhanging concrete structure according to claim 6, characterized in that the fixed pipe (151) comprises a fixed section (1511) and a movable section (1512), the control component (153) is arranged in the fixed section (1511), the fixed section (1511) and the movable section (1512) are movably inserted, and when the length of the cutting (152) extending out of the fixed section (1511) is half of the length of the cutting and the movable rod (1532) is abutted against the movable section (1512), the length of the fixed pipe (151) is the reference length for calculating the position of the inclined hole.
8. The construction method of the high-position overhanging concrete structure of claim 1, wherein the reverse-pulling beam (7) is provided with a through groove (11) along the length direction, the through groove (11) penetrates through the upper surface and the lower surface of the reverse-pulling beam (7), a plurality of hanging rods (10) are connected in a sliding manner in the through groove (11), the upper ends of the hanging rods (10) are provided with threads and are connected with adjusting nuts (12) in a threaded manner, and the transverse steel beam (8) is hung between the two hanging rods (10).

Description

Construction method of high-position overhanging concrete structure Technical Field The application relates to the technical field of cantilever structure construction, in particular to a high-position cantilever concrete structure construction method. Background With the rapid development of urban high quality, people are increasingly required to be higher in high-grade and usability of buildings, and more high-grade hotels and high-grade entertainment venues adopt a design scheme of being provided with overhanging swimming pools. The existing overhanging swimming pool generally takes a reinforced concrete structure as a foundation. During construction, a steel beam is required to be anchored on a floor slab, one end of the steel beam is suspended out of the floor slab to serve as a supporting foundation of the overhanging swimming pool structure, and as the occupied area of the overhanging swimming pool is larger than that of a common balcony, an inclined support is required to be applied between the lower surface of the steel beam and a wall body, the inclined support provides support for the steel beam, then a template frame is built on the upper surface of the steel beam, steel bars are bound, concrete is poured to form the overhanging structure, and decoration construction is performed subsequently. However, when the construction of the diagonal bracing support is carried out, constructors need to carry out high-altitude suspension operation on the outer wall, so that the construction efficiency is low, and a large construction risk exists. Disclosure of Invention The application provides a construction method of a high-level overhanging concrete structure in order to improve the construction efficiency and the construction safety of the high-level concrete overhanging structure. The application provides a construction method of a high-position overhanging concrete structure, which adopts the following technical scheme: A construction method of a high-position overhanging concrete structure comprises the following steps: S1, anchoring a plurality of longitudinal steel beams on a floor slab; S2, paving steel wire meshes on a plurality of longitudinal steel beams; S3, performing guard rail construction on the longitudinal steel beam; s4, anchoring a counter-pulling beam on the wall bodies at two sides of the longitudinal steel beams, wherein the counter-pulling beam is positioned above the longitudinal steel beams and is parallel to the longitudinal steel beams; S5, constructing the diagonal bracing beams, namely forming a diagonal hole for the diagonal bracing beams to pass through on the wall body of the lower floor, enabling the diagonal bracing beams to pass through the diagonal hole until one end of each diagonal bracing beam is abutted against the longitudinal steel beam, and then fixing the diagonal bracing beams with the wall body; S6, dismantling the steel wire mesh, paving a bottom template and side templates on a plurality of longitudinal steel beams, binding steel bars in a die cavity defined by the side templates and the bottom plate, and pouring concrete to form an overhanging concrete structure. Through adopting above-mentioned technical scheme, through lay the wire net and carry out the rail guard construction on a plurality of vertical girder steel, not only convenient follow-up construction, can effectively protect constructor moreover, show improvement construction safety. By applying the reverse pulling beam and the transverse steel beam, the reverse pulling beam, the transverse steel beam and the wall body form a reverse pulling structure, so that good support is provided for the longitudinal steel beam, and the bearing capacity of the longitudinal steel beam is remarkably enhanced. Meanwhile, through the holes on the wall body of the lower floor, and then the construction of the diagonal bracing beams is carried out in the floor, the bearing capacity of the longitudinal steel beams is further enhanced, and the construction of the diagonal bracing beams can be completed indoors, so that the construction efficiency is remarkably improved, and the construction risk is reduced. Preferably, in the step S1, when the longitudinal steel beam is anchored, a first through hole through which the fixing beam passes is first formed in the floor slab, one end of the fixing beam passes through the first through hole and is welded with the longitudinal steel beam, and then the fixing beam is anchored on the lower surface of the floor slab. Through adopting above-mentioned technical scheme, fixed beam cooperation floor forms the reverse structure of drawing, is favorable to reinforcing longitudinal girder steel's bearing capacity. Preferably, in the step S4, during construction of the counter-pulling beam, a second through hole is formed in the wall body through which the counter-pulling beam passes, then the counter-pulling plate is welded at one end of the counter-pulling beam, then one end of th