CN111779013A

CN111779013A - Method for backfilling below terrace of upper layer of basement roof of high-rise building in advance

Info

Publication number: CN111779013A
Application number: CN202010829277.0A
Authority: CN
Inventors: 刘宝堂; 王勇; 谭国良
Original assignee: China MCC17 Group Co Ltd
Current assignee: China MCC17 Group Co Ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2020-10-16

Abstract

The invention discloses a method for backfilling below a terrace on a top plate of a basement of a high-rise building in advance, which relates to the technical field of high-rise building construction methods and aims to solve the problems that the safety, order, engineering quality and working efficiency are influenced by the construction period of the existing backfilling method between the top plate and the ground plane and other constructions; the invention comprises the following steps: building a foundation wall, embedding steel bars and binding constructional column steel bars; step two: binding the steel bars of the coping foundation beam, pouring concrete of the constructional columns and the coping foundation beam, and removing the template after the concrete is shaped; step three: painting the foundation wall to form a painted surface, cleaning the top plate and the foundation wall after drying, and making a waterproof layer; step four: binding distributed steel bars of the protective layer, pouring the concrete protective layer, and backfilling after the protective layer is shaped; the invention overcomes the defect that each professional works hit the construction period, ensures the process quality, greatly improves the working efficiency, and achieves the purposes of saving the construction period, safe production and reducing the cost.

Description

Method for backfilling below terrace of upper layer of basement roof of high-rise building in advance

Technical Field

The invention relates to the technical field of high-rise building construction methods, in particular to a method for backfilling below a terrace on a top plate of a basement of a high-rise building in advance.

Background

A high-rise building, namely a high-rise building structure, is defined in the technical code of high-rise building concrete structures (JGJ 3-2002), and a reinforced concrete structure with 10 floors or more than 10 floors or a height of more than 28m is called a high-rise building structure.

In the backfill method below the floor of a building layer plus or minus 0.00 terrace on the top plate of the basement of the high-rise building in the prior art, the whole main structure of the building is capped after a long time, all secondary structures are finished and accepted, the internal and external painting is finished, the external wall heat-insulation real stone paint is finished, all external wall shelves are dismantled, and meanwhile, after steel pipe frames, templates and construction wastes around the building are cleaned, the top plate of the basement building can be cleaned, a foundation wall is built, a waterproof layer is made, a concrete protective layer is made, and the condition of earth backfill is met; however, in this stage, the project is in the most complicated stage of ending, the outer wall frame is removed, the elevator is installed, the indoor and outdoor fire water installation, the tap water pipeline installation, the rain and sewage pipeline installation, the strong and weak electricity installation, the gas installation, the outdoor landscape paving and the like are all specially interwoven, so that contradictions and disadvantages which are difficult to overcome are intensively expressed, the civil construction team needs to backfill soil, but if the pipe network is embedded after backfilling, the remaining time is insufficient, so that each professional works bury respective pipeline facilities, the construction period node is required, the construction site is disordered, the equipment is numerous, even different construction teams often dig and bury, disputes are caused, the site safety and the order are influenced, the process quality of the project can not be ensured, and the work efficiency is not improved; therefore, a method for backfilling below the terrace of the upper layer of the basement roof of the high-rise building in advance is urgently needed to solve the problem.

Disclosure of Invention

The invention aims to provide a method for backfilling below a terrace on a top plate of a basement of a high-rise building in advance, which aims to solve the problems that the safety, order, engineering quality and working efficiency are influenced by the conventional method for backfilling soil between the top plate and the ground level and other construction period.

In order to achieve the purpose, the invention provides the following technical scheme: a method for backfilling below a floor on a top plate of a basement of a high-rise building in advance comprises the following specific steps:

the method comprises the following steps: after the support frames below the ground level and above the top plate are completely removed, building a foundation wall, planting bars and binding reinforcing steel bars for pouring a constructional column;

step two: after the foundation wall is built, setting templates for pouring concrete for the constructional columns and the coping foundation beams, binding reinforcing steel bars of the coping foundation beams, performing concrete pouring on the constructional columns and the coping foundation beams, and removing the templates after the concrete is shaped;

step three: painting the foundation wall to form a painted surface, cleaning the top plate and the foundation wall after drying, and making a waterproof layer;

step four: binding the distributed steel bars of the protective layer, erecting a formwork, pouring the concrete protective layer, and backfilling the backfill below the terrace surface after the protective layer is shaped and the formwork is removed.

Preferably, in the first step, before the foundation wall is built, the top plate is positioned and laid out, the plane positions and the marking lines of the foundation wall, the constructional columns and the top pressing foundation beam are popped up, the skin number rods are erected, the foundation wall is built with through lines, and the raft positions need to be built with vertical through lines on two sides.

Preferably, in the first step, when the steel bars for pouring the constructional column are bound, the bending angle of the encryption hoop is 135 degrees.

Preferably, in the second step, the template can be removed after the poured constructional columns and the top-pressed foundation beams are shaped for 2-3 days, and the top plate and the foundation wall are cleaned after the template is removed.

Preferably, in the third step, the painted surface needs to be dried in the air for 1 to 2 days, and then the top plate and the foundation wall are cleaned.

Preferably, in the third step, the waterproof layer is made of SBS waterproof coiled material.

Preferably, in the fourth step, the diameter of the distributed steel bars of the protective layer is 6.5mm, and the binding time interval is 200mm in bidirectional arrangement.

Preferably, in the fourth step, the backfill is started after the poured protective layer is shaped for 3-5 days.

Compared with the prior art, the invention has the beneficial effects that:

according to the method for backfilling the basement top plate of the high-rise building in advance below the terrace, after all the support frames below the terrace surface 9 and above the top plate 12 are dismantled, all work contents which need to be completed before backfilling soil below the terrace surface of the basement top plate can be constructed and backfilled even if the main structure of the high-rise building is still constructed upwards continuously; the construction of all the work contents before backfilling below the terrace surface is carried out without waiting for the completion of all the structures, decoration and outer frame demolition, so that the long waiting time of 6-12 months is saved, the defect that each professional worker hits the construction period is overcome, the process quality of each professional worker is ensured, the working efficiency is greatly improved, the comprehensive implementation of quality, safety and civilized construction measures is ensured, and the purposes of saving the construction period, safe production and reducing the cost are finally achieved.

Drawings

FIG. 1 is a schematic diagram of the position relationship between backfill and other structures, which is only used to show that the backfill is located above a top plate and below a floor;

fig. 2 is a schematic top view of the foundation wall and the constructional column according to the present invention.

In the figure: 1. a foundation wall; 2. pressing the foundation beam; 3. constructing a column; 4. a waterproof layer; 5. a protective layer; 6. an upper end surface; 7. brushing the noodles; 8. backfilling; 9. a terrace surface; 10. a shear wall; 11. a frame column; 12. a top plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1 and 2, a method for backfilling a floor below a floor on a top plate of a basement of a high-rise building in advance comprises the following specific steps:

the method comprises the following steps: after all the support frames below the terrace surface 9 and above the top plate 12 are removed, positioning and paying off are carried out on the top plate 12, the plane positions and the marking lines of the foundation wall 1, the constructional column 3 and the coping foundation beam 2 are popped out, a careful re-inspection is carried out, after an error is confirmed, a skin number rod is erected, the foundation wall 1 is built with the line, the double-sided vertical through line is needed to be noticed at the racking position, when the foundation wall 1 is built, the steel bars for pouring the constructional column 3 are planted and bound, when the steel bars are bound, the encryption hoop needs to be installed in place, and in order to ensure the anti-seismic requirement, the 135-degree bending angle of the hoop needs to be in place; the steps can be carried out at any time even if the main structure of the high-rise building is still constructed upwards continuously;

step two: after the foundation wall 1 is built, setting templates for pouring concrete for the constructional column 3 and the coping foundation beam 2, binding reinforcing steel bars of the coping foundation beam 2, carrying out concrete pouring on the constructional column 3 and the coping foundation beam 2, removing the templates after the concrete is shaped, generally shaping for 2-3 days to achieve the expected strength, and cleaning the top plate 12 and the foundation wall 1 after the templates are removed for smoothly carrying out later painting work and keeping a clean wall surface;

step three: painting the foundation wall 1 to form a painted surface 7 and airing the painted surface, wherein the painted surface is generally aired for 1 to 2 days, cleaning the top plate 12 and the foundation wall 1 to serve as a waterproof layer 4, and the waterproof layer 4 is preferably prepared by painting cold primer oil on the painted surface 7 to serve as an SBS waterproof coiled material;

step four: binding distributed steel bars of the protective layer 5, wherein the steel bars with the diameter of 6.5mm are generally used, during binding, the steel bars are distributed at intervals of 200mm in a two-way mode, a formwork is erected, the concrete protective layer 5 is poured, the backfill 8 below the terrace surface 9 can be backfilled after the protective layer 5 is shaped and a template is removed, and the expected strength can be achieved after the protective layer 5 is generally shaped for 3-5 days; the height of the backfill 8 below the terrace surface 9 and above the top plate 12 is generally only about 1 m, so the protective layer 5 can be constructed by adopting a brick wall building mode without binding reinforcing steel bars and supporting molds.

By the method, all work contents before backfilling below the terrace surface 9 are not needed after all structures, decoration and outer frame dismantling are finished, backfilling construction can be arranged at any time according to the project progress, reasonable arrangement of the construction period is facilitated, time cost is saved, long waiting time of 6-12 months originally is saved, and the defect that each professional works hit the construction period is overcome.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.

The present invention is not described in detail, but is known to those skilled in the art.

Claims

1. The utility model provides a method of backfilling in advance below one deck terrace on high-rise building basement roof which is characterized in that includes concrete following steps:

the method comprises the following steps: after the support frames below the ground level (9) and above the top plate (12) are completely removed, building the foundation wall (1), planting the steel bars and binding the steel bars for pouring the constructional column (3);

step two: after the foundation wall (1) is built, setting a template for pouring concrete for the constructional column (3) and the coping foundation beam (2), binding reinforcing steel bars of the coping foundation beam (2), performing concrete pouring on the constructional column (3) and the coping foundation beam (2), and removing the template after the concrete is shaped;

step three: plastering the foundation wall (1) to form a plastering surface (7), cleaning the top plate (12) and the foundation wall (1) after drying, and making a waterproof layer (4);

step four: binding distributed steel bars of the protective layer (5), erecting a formwork and pouring the concrete protective layer (5), and removing the formwork after the protective layer (5) is shaped to backfill the backfill soil (8) below the terrace surface (9).

2. The method of claim 1, wherein the backfill is performed on the top plate of the basement of the high-rise building in advance on the following terrace of the high-rise building: in the first step, before the foundation wall (1) is built, the top plate (12) is positioned and laid out, the plane positions and the marking lines of the foundation wall (1), the constructional columns (3) and the top pressing foundation beam (2) are popped up, the skin number rods are erected, the through line is taken to build the foundation wall (1), and the double-faced raft joint is built with the vertical through line.

3. The method of claim 1, wherein the backfill is performed on the top plate of the basement of the high-rise building in advance on the following terrace of the high-rise building: in the first step, when steel bars for pouring the constructional column (3) are bound, the bending angle of the encryption hoop is 135 degrees.

4. The method of claim 1, wherein the backfill is performed on the top plate of the basement of the high-rise building in advance on the following terrace of the high-rise building: in the second step, the template can be removed after the poured constructional column (3) and the top-pressed foundation beam (2) are shaped for 2-3 days, and the top plate (12) and the foundation wall (1) are cleaned after the template is removed.

5. The method of claim 1, wherein the backfill is performed on the top plate of the basement of the high-rise building in advance on the following terrace of the high-rise building: in the third step, the painting surface (7) needs to be aired for 1-2 days, and then the top plate (12) and the foundation wall (1) are cleaned.

6. The method of claim 1, wherein the backfill is performed on the top plate of the basement of the high-rise building in advance on the following terrace of the high-rise building: in the third step, the waterproof layer (4) adopts SBS waterproof coiled material.

7. The method of claim 1, wherein the backfill is performed on the top plate of the basement of the high-rise building in advance on the following terrace of the high-rise building: in the fourth step, the diameter of the distributed steel bars of the protective layer (5) is 6.5mm, and the binding time interval is 200mm and the distributed steel bars are arranged in two directions.

8. The method of claim 1, wherein the backfill is performed on the top plate of the basement of the high-rise building in advance on the following terrace of the high-rise building: and in the fourth step, the poured protective layer (5) is shaped for 3-5 days, and then backfilling is started.