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Complex site large rectangle pile stirrup pre-splicing construction method

A construction method and technology of rectangular piles, which are applied in sheet pile walls, foundation structure engineering, construction, etc., can solve problems such as the lack of entry conditions for large machines, large spacing between main reinforcements on both sides, and large dimensions of stirrups, etc., so as to avoid Difficulty in lengthening main reinforcement welding, reducing hoisting load, and reducing construction cost

Inactive Publication Date: 2020-09-18
重庆建工第四建设有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the slope or landslide zone, the construction site is relatively complex, mostly steep slope, narrow road, and does not have the entry conditions for large machines
Large-scale rectangular pile reinforcement cages have the characteristics of dense main reinforcement in the bending direction, large spacing between the main reinforcement on both sides, large stirrup dimensions, and poor stability. Conventional reinforcement installations usually use in-hole binding, which has low work efficiency, poor safety, and reinforcement cage binding. In the process of easy collapse and other problems, it is a common problem to construct reinforcement cages for large rectangular piles in complex sites

Method used

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  • Complex site large rectangle pile stirrup pre-splicing construction method
  • Complex site large rectangle pile stirrup pre-splicing construction method
  • Complex site large rectangle pile stirrup pre-splicing construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0024] like figure 1 and figure 2 shown, including the following steps:

[0025] 1 Measuring setting-out and pile positioning

[0026] Setting out the pile position and elevation. According to the set axis control point and elevation benchmarking point, according to the pile location map, number the piles one by one, and release the pile location. Determine the center of the pile position and the direction of the axis, so as to determine the cross section of the pile and the outer line of the retaining wall. The lime sprinkling line is used as the boundary line of the pile hole excavation. After excavation.

[0027] 2 construction lock

[0028] 1. Set out the line according to the positioning, excavate the lock and a section of pile hole connected to the lock.

[0029] 2. After the pile hole of the first section is formed, tie the retaining wall and the locking reinforcement, and set up the formwork to pour the locking and retaining wall concrete. Two days after the lo...

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Abstract

The invention discloses a complex site large rectangle pile stirrup pre-splicing construction method, and relates to the field of stirrup construction. In order to achieve the aim, the method comprises the following steps of firstly, measuring setting out and pile position fixing; secondly, lock opening constructing; thirdly, pile hole excavating and supporting; fourthly, rock-socketed segment pile hole excavating; fifthly, supporting course detecting and pile hole acceptance check; sixthly, making auxiliary ribs for pre-splicing stirrups; seventhly, stirrup pre-splicing and lowering while splicing; eighthly, main rib lifting, positioning and binding; ninthly, ultrasonic acoustic detection tube mounting; and tenthly, pile core concrete pouring. Main ribs and stirrups of a steel reinforcement cage can achieve factory machining stirrup pre-splicing distribution, the stirrups can be in whole welding hooping splicing, on site, a stirrup cage is bound on a hole opening, influences of the main ribs are avoided, and the splicing speed is high.

Description

technical field [0001] The invention relates to a construction method for pre-assembled stirrups of large rectangular piles in complex sites, and mainly relates to the field of stirrup construction. Background technique [0002] With the expansion of infrastructure in our country, especially the massive construction of highways and railways, landslide control along the lines has become inevitable. For Chongqing, a mountainous city, it is often necessary to cut and support slopes during the construction of slopes and riverside buildings. Large rectangular piles are widely used for slope retaining support or landslide anti-sliding treatment due to their large horizontal bending resistance. Due to the side slope or landslide zone, the construction site is relatively complex, mostly in the shape of a steep slope, the road is narrow, and there is no entry condition for large machinery. Large-scale rectangular pile reinforcement cages have the characteristics of dense main reinf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/34E02D5/36E02D15/08
CPCE02D5/34E02D5/36E02D15/08E02D2200/1635
Inventor 余永明
Owner 重庆建工第四建设有限责任公司
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