CN-122013985-A - Independent support structure of post-pouring belt of building and construction method thereof

Abstract

The invention discloses an independent support structure of a post-pouring zone of a building and a construction method thereof, wherein the independent support structure comprises a constructional column; the number of the constructional columns is multiple and the constructional columns are distributed on two sides of the post-cast strip, the lower ends of the constructional columns are supported on the bottom plate, and the upper ends of the constructional columns and the frame beams which are perpendicularly intersected with the post-cast strip are anchored near the beam bottom of one end of the post-cast strip. According to the invention, the post-cast strip supporting system is changed from the traditional frame body template supporting system into the concrete constructional column independent supporting system, so that the renting cost of the pipe buckle frame can be reduced, the steel consumption is reduced, the post-cast strip and the top plate can be simultaneously disassembled, the construction efficiency is improved, the constructional columns are utilized to independently support the frame beams, the indoor space can be widened, and the material transfer and the effective follow-up construction can be conveniently carried out.

Inventors

• NIU FENG
• LI WEI
• She Yuran
• LIU JIAN
• ZHU WANWAN
• Li Mengan

Assignees

• 中国建筑第四工程局有限公司

Dates

Publication Date

20260512

Application Date

20260401

Claims (8)

1. 1. An independent support structure for post-cast strip of construction, characterized by comprising a constructional column (2); The number of the constructional columns (2) is multiple and the constructional columns are distributed on two sides of the post-cast strip (1), the lower ends of the constructional columns (2) are supported on the bottom plate (5), and the upper ends of the constructional columns and the frame beams (3) which are perpendicularly intersected with the post-cast strip (1) are anchored near the beam bottom at one end of the post-cast strip (1).
2. 2. The independent support structure of the post-pouring strip for the building according to claim 1, wherein the constructional column (2) is a circular column, and the distance between the circle center of the circular column and the corresponding side end surface of the frame beam (3) close to the post-pouring strip (1) is 300-500 mm.
3. 3. The independent support structure of the post-pouring strip for the building according to claim 2, wherein a reinforcement cage (21) is anchored in the constructional column (2), and the upper end of the reinforcement cage (21) is welded or bound and fixed with reinforcement in the frame beam (3).
4. 4. A construction post-pouring strip independent support structure according to claim 2, characterized in that the outer diameter of the constructional column (2) is not less than 300mm.
5. 5. The post-construction strip independent support structure according to claim 1, characterized in that the constructional column (2) comprises a plastic sleeve (22) and column concrete poured inside the plastic sleeve (22).
6. 6. The independent support structure for the post-pouring strip of the building, which is disclosed in claim 5, is characterized in that the plastic sleeve (22) is formed by mutually buckling and encircling two pipe bodies with the same size to form a pouring cavity, wing plates (23) extend outwards from the edges of the pipe bodies, a plurality of bolt holes (24) are formed in the wing plates (23), the wing plates (23) on the two pipe bodies are in opposite abutting connection, and fastening bolts penetrate through the bolt holes (24) to fasten the two pipe bodies.
7. 7. The post-construction green strip independent support structure according to claim 6, wherein the compressive strength of the post-construction concrete is not less than 30MPa.
8. 8. The construction method of an independent support structure for a post-cast strip for construction according to any one of claims 1 to 7, comprising the steps of: S1, measuring and positioning, namely measuring and paying-off on a bottom plate (5) and determining the position of a constructional column (2); s2, erecting a template, namely erecting the template of the constructional column (2) and a bracket of the frame beam (3) at the same time, and installing a template of the frame column (4); s3, pouring concrete, namely pouring concrete simultaneously on the constructional column (2) and the frame column (4), and pouring the frame beam (3) after the strength of the concrete reaches 1.2 Mpa; s4, roof construction, namely erecting a bracket (6), covering a post-pouring belt (1) by the erecting range of the bracket (6), installing a roof template and pouring roof concrete; s5, post-pouring concrete of the post-pouring belt, and removing the support (6) and simultaneously removing the top plate and the bottom die of the post-pouring belt (1) after the post-pouring belt concrete reaches the design strength; s6, manually chiseling the constructional column (2).

Description

Independent support structure of post-pouring belt of building and construction method thereof Technical Field The invention relates to the technical field of building structures, in particular to an independent support structure of a post-pouring zone of a building and a construction method thereof. Background In the field of modern building engineering, along with the continuous expansion of building scale and the increasing complexity of structural forms, a post-cast strip is widely applied to high-rise and super-high-rise building and large-span structure construction as a key technical means for controlling concrete shrinkage deformation and adjusting structural settlement difference, and is a temporary construction joint reserved in the construction process for preventing a cast-in-situ reinforced concrete structure from generating harmful cracks due to self shrinkage, temperature change or uneven settlement of a foundation in the construction process, and high-grade concrete is adopted for sealing and pouring after the main body structure construction is completed and the concrete shrinkage is basically stable. According to the related specification requirements, the templates and the brackets at the post-cast strip are required to be arranged independently and cannot be connected with a main body structure template supporting system, and when the main body structure template is removed, the post-cast strip supports cannot be removed, and the post-cast strip changes the complete beam and plate structure into a cantilever member. If the post-cast strip support is connected with the surrounding system, when the templates on two sides are removed, the cantilever structure at the post-cast strip can sag, crack or even break under the dead weight and the construction load. In the prior art, double-row independent supports are generally erected on two sides of the post-cast strip and are completely separated from the full-hall frame, or the temporary independent supports are manufactured by adopting section steel, and the independent supports can be dismantled after 28 days of post-cast strip concrete curing and qualified strength, so that the material renting cost is increased, the indoor space is occupied, and the transportation and the connection of the construction procedures of the follow-up construction materials are inconvenient. Therefore, how to provide a post-cast strip independent support structure with low cost and high efficiency and a construction method thereof is a problem to be solved by those skilled in the art. Disclosure of Invention In view of the above, the invention provides an independent support structure for a post-cast strip of a building and a construction method thereof, which solve the problems of low construction efficiency caused by long period, large steel consumption, high lease cost, large construction workload and influence on indoor space of the existing independent support structure for the post-cast strip. In order to achieve the above purpose, the present invention adopts the following technical scheme: An independent support structure of post-pouring belt of building, comprising constructional columns; The number of the constructional columns is multiple and the constructional columns are distributed on two sides of the post-cast strip, the lower ends of the constructional columns are supported on the bottom plate, and the upper ends of the constructional columns and the frame beams which are perpendicularly intersected with the post-cast strip are anchored near the beam bottom of one end of the post-cast strip. The post-cast strip formwork support system has the advantages that the traditional post-cast strip formwork support system is replaced by the constructional columns, the constructional columns are used for independent support, the defect of the work amount of mounting and dismounting the frame is avoided, the renting cost is avoided, the constructional columns are arranged to enable the post-cast strip and the top plate to be dismounted simultaneously, the construction efficiency is improved, the indoor space can be widened, the development of subsequent construction and the transportation work of materials are facilitated, and the construction efficiency is greatly improved. Preferably, the constructional column is a circular column, and the distance between the circle center of the circular column and the corresponding side end surface of the frame beam, which is close to the post-pouring belt, is 300-500 mm. Due to the existence of the post-cast strip, the frame beam or the plate forms a cantilever structure, and constructional columns can be arranged at the edge of the cantilever structure, so that the problems of sinking, cracking, deformation and the like of the cantilever structure under the action of dead weight can be avoided. Preferably, the constructional column is internally anchored with a reinforcement cage, and the upper end of the reinforcem