Method for controlling thickness of cast-in-place concrete floor slab by point-line-plane control method
A cast-in-situ floor slab and floor slab technology is applied in the processing of floor slabs, building materials, building components, etc. It can solve difficult problems and achieve the effects of simple operation, easy promotion and clear control precision.
Active Publication Date: 2012-03-21
浙江省东阳第三建筑工程有限公司
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
This control method has many links that produce errors, such as the deviation of the template installation elevation, the deviation of the five-zero elevation reading, the deviation of the pulled wire rope, the deviation caused by the leveling operation, etc., so it is necessary to control the deviation allowed by the specification It is very difficult within the scope; if the structural span is large, the beam-slab formwork needs to be arched, and the deviation of the floor thickness will be even greater
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
[0013] Material preparation→placement of leveling stool→laying of concrete→vibration→leveling→finishing
[0014] Material preparation
[0015] 1. Make a leveling stool
[0016] Cut a piece of equilateral triangle steel plate with a thickness of 5mm and a side length of 350mm, and then weld a Φ12 end sharpened (slightly blunt) steel bar leg on each of the three corners of the steel plate. The thickness of the steel plate plus the leg length are required. It is exactly equal to the thickness of the concrete plate. For the convenience of carrying, a handle is welded on the upper surface of the stool and it is ready (see figure 1 ). The specifications of leveling stools are divided according to their height, and the number of leveling stools of the same specification should not be less than 3.
[0017] 2. Making aluminum alloy scraper
[0018] Determine the length of the scraper according to the arching requirements of the floor. When the arching is below 2‰, the ruler length should be ...
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
Login to View More Abstract
The invention discloses an innovation of a method for leveling a cast-in-place concrete floor slab of a construction site, which is particularly suitable for a beam slab template which has a longer span and is required to be arched and can greatly improve accuracy for controlling elevation. The defects such as large floor slab thickness deviation, limited control range and the like overcome aiming at the conventional elevation control method; and a point-line-plane control method is invented under the enlightenment of a calculus theory to control the thickness of a cast-in-place concrete beam and the thickness of a cast-in-place concrete slab. The principle is a geometric principle that a plane is controlled by using a point and a line, and a big plane is slightly divided into a plurality of small planes. An implementation method of the point-line-plane control method comprises the following steps that: the entire floor slab plane is divided into a plurality of small planes for controlling; each small plane is controlled by placing one end on a leveling stool by using a point (a leveling stool for short) which has height equal to thickness of the concrete slab and a line (a floating rule) which has height equal to the thickness of the concrete slab and sweeping the other end, so that the concrete floor slab can be leveled, and the operation is similar to plastering operation of screeding. The method has the practical advantage of high control accuracy, easiness in operation and the like.
Description
Technical field [0001] The invention patent is an innovation of the method for leveling the cast-in-place concrete floor slab at the construction site, and is especially suitable for beam slab templates with large spans or requiring arching treatment, and can greatly improve the accuracy of elevation control. Background technique [0002] In the construction of housing construction engineering structure, the control of the thickness of cast-in-place concrete floor has always been a problem in the industry. The current method of controlling the thickness of floor slabs is the elevation control method, which is to copy out the five zero elevation points relative to the floor surface on the column and wall steel bars, and then control the elevation of the slab surface by pulling wires, thereby indirectly controlling the thickness of the beams and slabs. This control method has a lot of errors, such as the deviation of the template installation elevation, the deviation of the five-ze...
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 Patents(China)
IPC IPC(8): E04B5/16E04G21/02E04G21/10
Inventor 牛俊平
Owner 浙江省东阳第三建筑工程有限公司