Stress dispersion reinforced pile with recyclable anchor bars and construction method of reinforced pile
A stress dispersion and stiffening pile technology, which is applied in excavation, sheet pile walls, foundation structure engineering, etc., can solve the problems of large anchor deformation and low anchor force, and achieve the effect of shortening the recovery time
Active Publication Date: 2016-11-09
SHANGHAI STRONG FOUND ENG
View PDF8 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0011] The technical problem to be solved by the present invention is to overcome the technical problems and structural defects of existing anchor rods (cables) with low anchoring force, large anchoring deformation, and anchor reinforcement recovery, and provide a method that not only provides higher anchoring force, but also effectively controls deformation. Stress dispersion type stiffened piles with recyclable anchor tendons that can easily recover the anchor cables, and also provide the construction method of the stiffened piles
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
[0037] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.
[0038] The stiffened pile structure in this embodiment is as figure 1As shown, it is completed step by step. It can be formed in a hard soil layer, which can provide an anchoring force of more than 500KN, and can also be formed in a weak soil layer such as muddy soil, providing an anchoring force of more than 300KN. After the supporting function is completed, the anchor The tendons are fully recovered.
[0039] (1) form an oblique, large-diameter cement-soil or cement-mortar stiffened pile anchoring body 1 in the stratum 16 that needs to be anchored with a rotary jet mixing drilling rig or a bolter;
[0040] (2) Install the prestressed anchor bar 2 and the traction anchor bar 9 on the carrier body 3, and lock the prestressed anchor bar 2...
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 stress dispersion reinforced pile with recyclable anchor bars. The reinforced pile comprises an anchorage body, a prestress anchor bar, traction anchor bars and bearing bodies. The anchorage body is a large-diameter swing-injected mixing cement soil or cement slurry, and the bearing bodies are pushed into the anchorage body through a drill pipe. After anchorage body maintenance reaches design strength, prestress anchor bar construction prestress locking is achieved. After anchorage is finished, the traction anchor bars are tensioned to pull a clamp into cavities of the bearing bodies, and the prestress anchor bars are separately connected with the bearing bodies. All the anchor bars are recycled from an anchored stratum by means of a dragger. The invention further provides a construction method of the reinforced pile. Construction maneuverability is high, stress is dispersed, anchorage force generated in soft soil is large, anchorage reliability is high, the anchor bar recycling rate is high, and construction is efficient. The anchor bars and an anchor are recycled, engineering manufacturing cost is reduced, underground obstacles are removed, and environmental friendliness of the anchorage construction technology is achieved.
Description
technical field [0001] The invention relates to the technical field of civil engineering, in particular to a support pile used in deep foundation pit support engineering. Background technique [0002] In the currently commonly used slope and deep foundation pit support projects, the prestressed anchor cable has a high anchorage force, and the formed pile-anchor support structure has been widely used. But anchoring in soft ground is the bottleneck of anchoring technology, because soft ground has low frictional resistance and is prone to rheology, which limits the application of anchoring technology. In addition, the prestressed anchor bars are made of steel strands, which are often left underground to form obstacles after the slope and foundation pit enclosure structures complete their missions, which also limits the application of this type of support. For this reason, it is an urgent need for the engineering field to form a higher anchoring force in the soft soil layer, co...
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): E02D5/74E02D17/04
CPCE02D5/74E02D17/04
Inventor 刘全林张扬张衡刘斐然叶由德
Owner SHANGHAI STRONG FOUND ENG