CN115198880A

CN115198880A - Construction method of inverted cone round barrel concrete structure

Info

Publication number: CN115198880A
Application number: CN202210831133.8A
Authority: CN
Inventors: 杨贵柏; 李炳强; 胡学明
Original assignee: China 19th Metallurgical Corp
Current assignee: China 19th Metallurgical Corp
Priority date: 2022-07-14
Filing date: 2022-07-14
Publication date: 2022-10-18

Abstract

The invention relates to the field of constructional engineering, in particular to a construction method of an inverted cone round barrel concrete structure for conveniently and efficiently realizing reducing construction operation of the inverted cone round barrel concrete structure, which comprises the following steps of: a. erecting a scaffold, and erecting an outer mold on the scaffold; b. binding steel bars are arranged in a pouring cavity formed between an inner template and an outer mold of a barrel construction section in the shape of an inverted cone; c. an auxiliary cylinder is installed, a rotating shaft is arranged in the auxiliary cylinder, a fixed pipe is welded on the rotating shaft of the auxiliary cylinder, and the fixed pipe is connected with a telescopic pipe with a sliding groove; d. pouring concrete of the construction section of the inverted cone-shaped cylinder, namely pouring is completed in a pouring cavity formed between the inner template and the outer template; e. and after the first section of pouring is completed, the inner formwork is moved upwards to an upper construction section, then the telescopic pipe is lifted outwards to the design radius of a new height, and then the construction is circulated until the construction of the inverted cone round cylinder concrete structure is completed. The invention is especially suitable for the construction of the inverted cone round cylinder concrete structure.

Description

Construction method of inverted cone round barrel concrete structure

Technical Field

The invention relates to the field of constructional engineering, in particular to a construction method of an inverted cone round barrel concrete structure.

Background

In a concrete structure construction system with an inverted cone round barrel, full framing scaffolds are usually erected inside and outside the inverted cone round barrel, a large number of reducing supporting molds and consumables are used, and the construction difficulty is high; the quality of the reducer is difficult to control, and the construction period is long. This operation has plagued construction units. The invention discloses a patent 201911375596.2, which belongs to the technical field of construction engineering construction, and particularly relates to a combined type telescopic sleeve jacking device and a method thereof, and the device solves the series problems of complex power system, large number of transmission mechanisms, poor adaptability to narrow cylinder space, low flexibility in combined construction and the like of a traditional climbing formwork system in concrete cylinder construction of high-rise and super high-rise buildings. The jacking system comprises a plurality of jacking unit modules, a horizontal jacking frame, an upper supporting frame, a lower supporting frame and a plurality of longitudinal connecting beams, wherein each unit jacking module comprises a jacking oil cylinder and a telescopic sleeve frame; the jacking oil cylinder is arranged in the center of the telescopic sleeve frame, the upper end of the jacking oil cylinder is connected with the horizontal jacking frame, the jacking oil cylinder penetrates through a gap between the longitudinal connecting beams of the upper supporting frame, and the lower end of the jacking oil cylinder is connected with the lower supporting frame; through providing the single-cylinder jacking module device with the telescopic sleeve frame, the jacking operation of the formwork system can be independently carried out, and the multi-module combined jacking can also be carried out according to the construction needs of large-space barrels, so that the large-load three-dimensional operation is realized. However, the scheme has complex operation mode and high construction cost.

Disclosure of Invention

The invention aims to solve the technical problem of providing a construction method of an inverted cone round barrel concrete structure, which is convenient and efficient to realize diameter-changing construction operation of the inverted cone round barrel concrete structure.

The technical scheme adopted by the invention for solving the technical problems is as follows: the construction method of the inverted cone round cylinder concrete structure comprises the following steps: a. firstly, erecting a scaffold, erecting an outer mold on the scaffold, erecting an operation platform on the inner wall of an inverted cone-shaped cylinder, and installing the operation platform on the top of the scaffold; b. binding steel bars are arranged in a pouring cavity formed between an inner template and an outer mold of a barrel construction section in the shape of an inverted cone; c. installing an auxiliary cylinder, wherein a rotating shaft is arranged in the auxiliary cylinder, a fixed pipe is welded on the rotating shaft of the auxiliary cylinder and is connected with a telescopic pipe with a sliding groove, and the end of the telescopic pipe controls the upper radius of an inner template of the inverted cone-shaped cylinder body; d. pouring concrete of the construction section of the inverted cone-shaped cylinder, namely completing pouring in a pouring cavity formed between the inner template and the outer mold; e. after the first section of pouring is completed, the auxiliary barrel is synchronously lifted through the auxiliary barrel lifting device, the inner formwork moves upwards to the upper construction section, then the telescopic pipe is lifted outwards to the design radius of a new height along the outward extending direction, a new pouring cavity is formed between the inner formwork and the outer formwork and is poured again, and then the circular construction is carried out until the construction of the inverted cone round barrel concrete structure is completed.

Further, in the step c, the fixed pipe is slidably connected with the telescopic pipe with the sliding groove through a bolt.

Furthermore, in the step c, the end of the extension tube is provided with a die supporting head for supporting the inner template.

Furthermore, in the step c, a lower top branch pipe is arranged at the bottom of the rotating shaft, wherein the lower top branch pipe is used for controlling the lower radius of the inner template of the inverted cone-shaped cylinder.

Further, in step e, the auxiliary cylinder lifting device is an electric chain reversing group.

The invention has the beneficial effects that: compared with the traditional inverted cone round barrel, the construction method of the inverted cone round barrel concrete structure has the advantages that the whole construction steps are optimized, so that a large number of scaffolds are saved in the construction of the inner wall. Wherein, form the pouring chamber between the structure of attaching the section of thick bamboo and the external mold, this makes operation more convenient in the barrel inner wall construction formwork, and the quality is easy control. The inner template of the auxiliary barrel lifted synchronously can save a large amount of manpower and material investment. The invention has the advantages of good construction quality, short construction period, safety and low cost. The invention is especially suitable for the construction of the inverted cone round cylinder concrete structure.

Drawings

Fig. 1 is a side view of the present invention.

Fig. 2 is a top view of the present invention.

Labeled as: the device comprises an upper operating platform 1, construction section concrete 2, a scaffold 3, an electric inverted chain group 4, a die head 5, an auxiliary barrel 6, an extension pipe 7, a bolt 8, a fixed pipe 9, an outer die 10, a rotating shaft 11, a lower top branch pipe 12, a barrel concrete structure 13, a lower operating platform 14, an outward extending direction 15, a barrel inner wall 16, an inner template 17 and binding steel bars 18.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

The construction method of the inverted cone round cylinder concrete structure shown in fig. 1 and 2 comprises the following steps: a. firstly, erecting a scaffold 3, erecting an outer die 10 on the scaffold 3, erecting an operation platform 14 on the inner wall 16 of a cylinder body in the shape of an inverted cone, and installing an operation platform 1 on the top of the scaffold 3; b. binding steel bars 18 are arranged in a pouring cavity formed between an inner template 17 and an outer template 10 in a construction section of the cylinder body with the shape of an inverted cone; c. an auxiliary barrel 6 is installed, a rotating shaft 11 is arranged in the auxiliary barrel 6, a fixed pipe 9 is welded on the rotating shaft 11 of the auxiliary barrel 6, the fixed pipe 9 is connected with a telescopic pipe 7 with a sliding groove, and the end of the telescopic pipe 7 controls the upper radius of an inner template 17 of the inverted cone-shaped barrel; d. pouring concrete 2 in the construction section of the inverted cone-shaped cylinder, namely pouring is completed in a pouring cavity formed between the inner template 17 and the outer template 10; e. after the first section of pouring is completed, the auxiliary barrel 6 is synchronously lifted through an auxiliary barrel lifting device, the inner template 17 is moved upwards to an upper construction section, then the telescopic pipe 7 is lifted outwards along the direction 15 to the designed radius of the new height, a new pouring cavity is formed between the inner template 17 and the outer mold 10 and is poured again, and then the circular construction is carried out until the construction of the inverted cone-shaped cylindrical concrete structure 13 is completed.

As a structure matching with the above construction method, in order to enable the position of the inner formwork 17 to be adjusted in time along with the rising of the auxiliary cylinder 6, and form a new casting cavity with the outer formwork 10, the following scheme is preferred: a rotating shaft 11 is arranged in the auxiliary barrel 6 along the direction of the central axis of the auxiliary barrel 6, an inner template extension driving rod is arranged on the rotating shaft 11, and the inner template 17 is connected with the rotating shaft 11 through the inner template extension driving rod. As shown in fig. 1, in order to further optimize the structure of the inner form extension driving rod, it is preferable that the inner form extension driving rod includes a fixed pipe 9 fixedly disposed on the rotating shaft 11 and a telescopic pipe 7 slidably connected with the fixed pipe 9, and a free end of the telescopic pipe 7 is connected with the inner form 17. Preferably, a die supporting head 5 is additionally arranged, and the telescopic pipe 7 is connected with the inner template 17 through the die supporting head 5, so that the connection between the inner template 17 and the telescopic pipe 7 is more stable. In order to further achieve the stable connection of the inner form 17, it is preferable that the rotating shaft 11 is fixedly provided with a lower top branch pipe 12, and the lower top branch pipe 12 is connected with the inner form 17 through a telescopic pipe 7 slidably connected with the lower top branch pipe 12.

In practice, the outer periphery of the outer mold 10 is preferably provided with scaffolds 3. For the convenience of the lifting operation of the auxiliary cylinder 6, the following scheme is preferred: the top of the outer die 10 is provided with an upper operating platform 1, and the upper operating platform 1 is connected with the auxiliary barrel 6 through a lifting mechanism. It is generally preferred that the lifting mechanism be an electric reverse chain set 4. In order to ensure the safety of the bottom space of the auxiliary drum 6, the bottom of the auxiliary drum 6 is preferably provided with a lower operating platform 14.

The method can conveniently and efficiently realize the reducing construction operation of the inverted cone circular cylinder concrete structure, and has the advantages of strong practicability, obvious technical advantages and wide market popularization prospect.

Claims

1. The construction method of the inverted cone round cylinder concrete structure is characterized by comprising the following steps:

a. firstly, erecting a scaffold (3), erecting an outer die (10) on the scaffold (3), erecting a lower operating platform (14) on the inner wall (16) of a cylinder body in the shape of an inverted cone, and installing an upper operating platform (1) on the top of the scaffold (3);

b. binding steel bars (18) are arranged in a pouring cavity formed between an inner template (17) and an outer template (10) in a construction section of the cylinder body with the shape of an inverted cone;

c. an auxiliary cylinder (6) is installed, a rotating shaft (11) is arranged in the auxiliary cylinder (6), a fixed pipe (9) is welded on the rotating shaft (11) of the auxiliary cylinder (6), the fixed pipe (9) is connected with a telescopic pipe (7) with a sliding groove, and the end of the telescopic pipe (7) controls the upper radius of an inner template (17) of the inverted cone-shaped cylinder body;

d. pouring concrete (2) of the inverted cone round cylinder construction section, namely pouring is completed in a pouring cavity formed between the inner template (17) and the outer template (10);

e. after the first section of pouring is finished, the auxiliary barrel (6) is synchronously lifted through the auxiliary barrel lifting device, the inner formwork (17) is moved upwards to the upper construction section, then the extension pipe (7) is moved to the design radius of the new height along the outward extending direction (15), a new pouring cavity is formed between the inner formwork (17) and the outer formwork (10), pouring is carried out again, and then the circular construction is carried out until the construction of the inverted cone round barrel concrete structure (13) is finished.

2. The construction method of the inverted cone round cylinder concrete structure according to claim 1, characterized in that: in the step c, the fixed pipe (9) is connected with the telescopic pipe (7) with the sliding groove in a sliding mode through a bolt (8).

3. The construction method of the inverted cone round cylinder concrete structure according to claim 1, characterized in that: in the step c, the end of the extension tube (7) is provided with a die supporting head (5) for supporting the inner template (17).

4. The construction method of the inverted cone round cylinder concrete structure according to claim 1, characterized in that: in the step c, a lower top branch pipe (12) is arranged at the bottom of the rotating shaft (11), wherein the lower top branch pipe (12) is used for controlling the lower radius of an inner template (17) of the inverted cone round barrel.

5. The construction method of the inverted cone round cylinder concrete structure as claimed in any one of claims 1 to 4, characterized in that: in the step e, the auxiliary cylinder lifting device is an electric inverted chain group (4).