Layered continuous pouring mode for ultra-long and ultra-thick large-volume concrete foundation
A large-volume concrete and concrete technology, which is applied in infrastructure engineering, construction, etc., can solve problems such as cracks in super-long and super-thick mass concrete pouring
Active Publication Date: 2017-05-31
陕西建工集团股份有限公司 +1
View PDF3 Cites 9 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] In view of the defects or deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a layered continuous pouring method for super-long and super-thick mass concrete foundations, so as to solve the problem of crack formation in super-long and super-thick mass concrete pouring
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0029] This embodiment provides a layered continuous pouring method for super-long and super-thick mass concrete foundations, which is suitable for actual projects with huge foundation bottoms, variable elevations, and no construction joints. The applicant has carried out actual tests according to the technical scheme of the present invention, and the specific technical idea is "diagonal stratification, thin-layer pouring, step-by-step pouring, and one-off to the end".
[0030] The specific implementation steps are:
[0031] (1) After the preparatory work is completed, vertical steel bars with a spacing of 6m*6m will be used in the foundation floor.
[0032] (2) Using oblique layered continuous pouring, first pour the base plate of the tower until the elevation is the same as the design elevation of the podium area, and then perform full pouring, adopt layered pouring method to pour to the elevation of each floor, between the two layers of concrete The pouring time difference...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a layered continuous pouring mode for an ultra-long and ultra-thick large-volume concrete foundation. The layered continuous pouring mode for the ultra-long and ultra-thick large-volume concrete foundation mainly comprises the following steps: (1) after preparation is completed, controlling an elevation by utilizing a profile steel supporting frame; (2) performing inclined layered continuous pouring aiming at the practical situation of the elevation of the foundation; (3) fully vibrating in a sectional layered mode according to the change of a pouring surface; (4) performing water bleeding treatment during a pouring process and after the pouring is completed. The layered continuous pouring mode is suitable for a construction scheme in which the bottom area of the current engineering foundation is ultra-long and ultra-thick and a post-pouring belt is not retained, and has a very good effect on preventing and controlling a crack; meanwhile, the increment of construction period and cost caused by post-pouring is avoided by selecting the construction scheme; cumbersome steps of post-treatment are also avoided; the layered continuous pouring mode for the ultra-long and ultra-thick large-volume concrete foundation is very suitable to be popularized and used in current construction.
Description
technical field [0001] The invention relates to a method of pouring large-volume concrete foundations in practical activities of foundation engineering, in particular to a layered and continuous pouring method of super-long and super-thick large-volume concrete foundations, and a pouring method for avoiding the formation of cracks. Background technique [0002] Mass concrete foundations appear more and more in modern engineering construction. The appearance of mass concrete cracks is a common technical problem in the industry. Once cracks are formed, especially penetrating cracks appearing in important parts of the foundation, it will affect the The durability and bearing capacity of the structure bring huge losses, and ultimately affect the safe use of the building. Experts have conducted long-term and in-depth research on this, and have proposed many feasible crack control and anti-crack measures for each step of construction. Among them, the introduction of post-pouring t...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): E02D15/02
CPCE02D15/02E02D2250/0023
Inventor 胡长明叶仁瑞梅源韩大富吴延胡晓斌
Owner 陕西建工集团股份有限公司