Monitoring Method of Horizontal Displacement of Underground Diaphragm Wall
A technology of underground diaphragm wall and horizontal displacement, which can be used in the testing of infrastructure, construction, infrastructure engineering, etc., and can solve problems such as deviation of monitoring data.
Active Publication Date: 2015-12-23
CHINA CONSTR EIGHT ENG DIV CORP LTD
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The benefit of this measurement method is that it can effectively solve the problem of monitoring data deviation caused by the blockage of the PVC inclinometer pipe and the upward movement of the reference point, thereby greatly improving the accuracy of monitoring the horizontal displacement of the underground diaphragm wall of the enclosure structure
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
[0010] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0011] refer to figure 1 When making the reinforcement cage of the underground diaphragm wall 1, the PVC inclinometer pipe 2 is bound in the reinforcement cage, the lower end of the PVC inclinometer pipe 2 goes deep into the bottom of the wall and the upper end is higher than the top of the wall. After the concrete is poured to form the underground diaphragm wall 1 and the pre-embedded PVC inclinometer pipe 2, the type selection, binding quality and joint sealing treatment of the PVC inclinometer pipe 2 shall comply with the "Technical Specifications for Monitoring of Building Foundation Pit Engineering" (GB50497-2009) Require. Plant steel bars on the top of the wall around the pre-embedded PVC inclinometer pipe 2 and pour a 500×500×500mm PVC inclinometer pipe concrete protection platform 4. Relevant requirements of the ribs are implemented, and at t...
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 provides a method for monitoring horizontal displacement of an underground continuous wall body. The method comprises the steps of pouring a concrete protection platform around an embedded PVC inclinometer casing of an underground continuous wall and setting a correction point on the top face of the concrete protection platform; using the PVC inclinometer casing and an inclinometer to measure a horizontal displacement initial value X0 of the underground continuous wall body before foundation pit excavation and using a theodolite to measure a horizontal displacement initial value Y0 of the correction point; using the PVC inclinometer casing and an inclinometer to measure horizontal displacement values at different depths of the underground continuous wall body and a wall body horizontal displacement value X(i) in the construction process, and using the theodolite to measure a horizontal displacement value Y(i) of the correction point, wherein the superscript I represents for measuring times, and an obtained wall body horizontal displacement correction value P(i)=(Y(i)-Y0)- (X(i)-X0); S5, using the wall body horizontal displacement correction value P(i) to correct the wall body horizontal displacement value X(i) and the horizontal displacement values at different depths of the wall body, wherein the corrected wall body horizontal displacement value and the corrected horizontal displacement values at different depths of the wall body are shown as formulas.
Description
technical field [0001] The invention relates to a method for measuring building construction, in particular to a method for monitoring the horizontal displacement of an underground diaphragm wall. Background technique [0002] At this stage, in the construction of deep foundation pits, it is necessary to monitor the deformation of the enclosure structure of the underground diaphragm wall. In this monitoring project, the commonly used technology is to pre-embed PVC inclinometer pipes in the underground diaphragm wall and then use an inclinometer to detect them. To monitor the horizontal displacement of the wall, it is generally required that the depth of the pre-embedded PVC inclinometer pipe should go deep into the bottom of the underground diaphragm wall. The inclinometer probe cannot be lowered to the design reference depth due to the blockage inside the pipe. The working principle of the inclinometer is to use the design reference depth as the reference point and then acc...
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): E02D33/00
Inventor 李乐郭凯崔爱珍
Owner CHINA CONSTR EIGHT ENG DIV CORP LTD