Double-anchoring-section prestress anchor cable structure and constructing method thereof
A technology of prestressed anchor cables and double anchors, which is applied in the direction of foundation structure engineering, buildings, sheet pile walls, etc., can solve the problems of insufficient durability, etc., and achieve the effects of good anti-corrosion effect, reasonable economy and reasonable structure
Active Publication Date: 2015-07-22
铁科检测有限公司
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[0004] The purpose of the present invention is to provide a double-anchor section prestressed anchor cable structure and its constru
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[0045] see figure 1 , a prestressed anchor cable structure with double anchorage sections in the present invention, including an inner anchorage section A, a free section B, an outer anchorage section C and an anchor head part D through which a steel strand 1 runs, and the steel strand 1 of the inner anchorage section A The grouting body 2 is bonded to the bottom section of the borehole 3, the upper part of the inner anchor section A is the free section B of the steel strand 1 in a free state, and the anchor head part D is set outside the hole 3 and connected with the steel strand The top of line 1 is fixed. An outer anchoring section C is provided between the upper end of the free section B and the hole opening; the grouting of the grouting body 2 is carried out three times, the first grouting ends at the middle of the free section B, and the second injection The grout adopts splitting grouting to form the inner anchorage section A. After the slurry in the inner anchorage se...
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Abstract
The invention discloses a double-anchoring-section prestress anchor cable structure and a constructing method thereof. The double-anchoring-section prestress anchor cable structure comprises an inner anchoring section, a free section, an outer anchoring section and an anchor head part, wherein a steel strand penetrates through the inner anchoring section, the free section, the outer anchoring section and the anchor head part. The portion, located on the inner anchoring section, of the steel strand is attached to one section of the bottom of a drilled hole through a grouting body. The free section is arranged at the upper portion of the inner anchoring section. The anchor head part is arranged outside a drilled hole opening and fixed to the top end of the steel strand. The outer anchoring section is arranged between the upper end of the free section and the drilled hole opening. Grouting is conducted through three steps, the first step of grouting is ended in the middle of the free section B, the inner anchoring section is formed through fracturing grouting in the second step of grouting, and the third step of grouting is conducted on the outer anchoring section C after a grout body of the inner anchoring section reaches the age and the steel strand is stretched. Except that the portion, located on the free section, of the steel stand is free, the portions, located on the inner anchoring section and the outer anchoring section, of the steel strand are both attached to the grout body to form a double-anchoring-section anchor cable with the inner anchoring section and the outer anchoring section. The double-anchoring-section prestress anchor cable structure has the advantages of being advanced in technology, economical, reasonable, rapid in construction and the like, and is a novel slope strengthening technology with prospects.
Description
technical field [0001] The invention relates to a double-anchor section prestressed anchor cable structure and a construction method thereof, which are suitable for side slope reinforcement projects of roads, railways, mines, and municipalities. Background technique [0002] As a hidden project, the slope anchoring project is buried in various types of rock and soil as its main materials, steel and concrete. It will be corroded and damaged by various erosive media to varying degrees when it is in contact with groundwater and site soil for a long time, which will cause structural damage. The physical and mechanical properties such as durability and strength are reduced. [0003] In order to improve the durability and effectiveness of anchoring engineering, in addition to improving existing technologies, it is important to study new anchoring structures and develop anchoring technologies with better durability in combination with continuously developing new technologies, new m...
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Inventor 张玉芳敖道朝刘伟万军利陈达章
Owner 铁科检测有限公司
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